# CardBoardCore.com > Cardboard Core provides high-quality Kraft heavy-duty tubes and cardboard cores for shipping, storage, and industrial use. Our durable, eco-friendly packaging solutions are customizable, recyclable, and made in the USA. Shop reliable, heavy-duty tubes for blueprints, posters, fabric rolls, & more at competitive prices ## Collections - [Sealer Sales Foot Sealers](https://cardboardcore.com/collections/sealer-sales-foot-sealers): - [Sealer Sales](https://cardboardcore.com/collections/sealer-sales): - [All Cardboard Cores & Tubes](https://cardboardcore.com/collections/all-cardboard-cores-tubes): - [Labelmate USA](https://cardboardcore.com/collections/labelmate-usa): - [Labelmate Label Matrix Removal Systems](https://cardboardcore.com/collections/labelmate-label-matrix-removal-systems): - [Labelmate Label Counters](https://cardboardcore.com/collections/labelmate-label-counters): - [Labelmate Label Accessories](https://cardboardcore.com/collections/labelmate-label-accessories): - [Labelmate Label Dispensers](https://cardboardcore.com/collections/labelmate-label-dispensers): - [Labelmate Label Core Chucks](https://cardboardcore.com/collections/labelmate-label-core-chucks): - [Labelmate Label Unwinders](https://cardboardcore.com/collections/labelmate-label-unwinders): - [Labelmate Label Splicers](https://cardboardcore.com/collections/labelmate-label-splicers): - [All Hardware](https://cardboardcore.com/collections/all-hardware): - [Sealer Sales Hand Sealers](https://cardboardcore.com/collections/sealer-sales-hand-sealers): - [Kraft Tubes](https://cardboardcore.com/collections/mailing-tubes-1): Kraft mailing tubes with .125" thick walls are the ideal choice for shipping, storing, and protecting oversized, fragile, or high-value items. Designed for maximum durability, these tubes offer excellent resistance to bending, crushing, and puncturing during transit or long-term storage. At CardboardCore, we provide a wide selection of .125 wall Kraft mailing tubes, available in lengths up to 60 inches and inner diameters of 2", 3", and 4". Constructed from premium, spirally wound Kraft paperboard, these tubes are engineered for strength, rigidity, and long-lasting performance. Our .125 thick tubes are perfect for securing and transporting: Blueprints and large-format documents Industrial components and metal rods Fabric rolls, textiles, and banners Posters, artwork, and fragile rolled materials With reinforced chipboard construction and a robust wall thickness, these tubes deliver superior protection for even your most demanding shipments. Eco-Friendly & American Made Not only are our .125 wall Kraft tubes built tough—they’re also 100% recyclable, reusable, and manufactured in the USA. Whether you're packing materials for shipping, storage, or display, you're choosing a sustainable and dependable packaging solution. Need something specific? We offer custom lengths, bulk quantities, and optional end caps to match your exact requirements. - [Cardboard Cores](https://cardboardcore.com/collections/cardboard-cores): Cardboard Core is proud to present a diverse collection of cores made from 100 % recyclable paper boards. We carry cores ranging in inner diameter from 1 to 4 inches and length up to 60 inches. Our cores are specially cut in house and are customizable as per requirement. With robust construction and top-notch quality, our cores support a range of products like paper rolls, tapes, textiles, films, foils, and labels. The smooth surface finish of our cardboard cores ensures easy handling and less friction. Their wall thickness works as a sturdy support structure that ensures stability and security during shipment and storage of these items. Our cores have applications in various industries where packaging, winding, and converting are essential. They can be used seamlessly with rewinders and applicators to ensure smooth operations in any industry. All the cores in our collection are eco-friendly and manufactured in the United States, thus reducing their carbon footprint. Choose cores from our collection to support sustainability without compromising on quality. - [1" ID Cardboard Cores](https://cardboardcore.com/collections/1-id-cardboard-cores): 1" Inner Diameter Cardboard Cores available in 0.125 thickness All 1" inner diameter cores are available from 0.5" long to 5.66" long - [2" ID Cardboard Cores](https://cardboardcore.com/collections/2-id-cardboard-cores): 2" Inner Diameter Cardboard Cores available in 0.125 thickness All 2" inner diameter cores are available from 0.5" long to 5.66" long - [3" ID Cardboard Cores](https://cardboardcore.com/collections/3-id-cardboard-cores): 3" Inner Diameter Cardboard Cores available in 2 thicknesses - 0.125and 0.25"All 3" inner diameter cores are available from 0.5" long to 60" long - [4" ID Cardboard Cores](https://cardboardcore.com/collections/4-id-cardboard-cores): 4" Inner Diameter Cardboard Cores available in 2 thicknesses - 0.125and 0.25"All 4" inner diameter cores are available from 0.5" long to 60" long - [2" ID Kraft Cardboard Tubes](https://cardboardcore.com/collections/2-id-cardboard-mailing-tube): Protect small-diameter rolled materials with confidence using our 2-inch ID cardboard mailing tubes featuring a .125 thick wall. Designed for compact items that still need strong protection, these mailing tubes are perfect for businesses shipping documents, small posters, prints, or lightweight industrial components. Space-Saving Tubes, Maximum Protection Don’t let the smaller diameter fool you—these 2-inch mailing tubes are built tough. Crafted from rigid, spiral-wound Kraft paperboard with a .125" wall, they provide the structural integrity needed to prevent creases, tears, and damage in transit. Industries that rely on our 2" cores include: Marketing and print services shipping small-format posters or sales materials Laboratories and manufacturers packaging film, tubing, or small parts Stationery and document services sending rolled certificates or awards Artists and Etsy sellers protecting rolled prints and artwork for customers These tubes are a perfect fit for packaging needs that call for compact, no-compromise durability. Key Features of Our 2-Inch Mailing Tubes .125” thick Kraft construction: Strong enough to withstand shipping and handling 2" internal diameter: Ideal for narrow, tightly rolled products Plastic or metal end plugs: Keeps your contents secure and dust-free Eco-conscious packaging: Fully recyclable and reusable Length flexibility: Standard options or custom-cut to fit your exact needs Lightweight but strong, these tubes help you save on shipping costs without sacrificing protection. Get Custom Options & Volume Pricing Whether you're ordering a dozen or thousands, CardboardCore offers scalable solutions. Ask us about custom tube lengths, printed branding, or bulk discounts for wholesale buyers and fulfillment centers. - [3" ID Kraft Tubes](https://cardboardcore.com/collections/3-id-cardboard-mailing-tube): 3" ID Cardboard Mailing Tubes – .125 Thick, Built for Tough Shipments When you need secure, dependable protection for rolled goods, our 3-inch ID cardboard mailing tubes with .125 wall thickness deliver. Whether you’re shipping documents, posters, blueprints, or specialty materials, these sturdy Kraft tubes keep your contents intact from warehouse to doorstep. Premium 3" Mailing Tubes for Versatile Shipping & Storage With a 3-inch inner diameter, these mailing tubes strike the perfect balance between compact form and internal capacity. Made from .125-inch thick spiral-wound paperboard, they’re engineered to prevent bending, crushing, or tearing in transit—ideal for: Creative professionals shipping posters, canvas prints, and artwork Corporate offices mailing certificates or rolled marketing materials Fulfillment centers needing reliable, tamper-resistant packaging Industrial suppliers storing wires, film, or rolled components Choose from a variety of lengths to suit your needs, or request a custom size for high-volume packaging. What Makes Our 3-Inch Mailing Tubes Stand Out? .125” wall thickness: Tough Kraft fiberboard construction resists impact and moisture 3" interior diameter: Compact yet spacious enough for most rolled goods End cap options: Secure plastic or metal plugs available to seal contents tightly Reusable & recyclable: Cost-effective and environmentally responsible Custom sizing: Tailor your order to meet unique shipping or branding requirements From shipping departments to storage rooms, these tubes are the go-to choice when durability and presentation matter. Bulk Quantities & Custom Branding Available Looking to order in volume or add a branded touch to your packaging? CardboardCore offers flexible manufacturing options and custom printing on cardboard tubes to help your business stand out while keeping costs in check. - [4" ID Kraft Cardboard Tubes](https://cardboardcore.com/collections/4-id-cardboard-mailing-tube): Looking for strong, .125 thick 4-inch ID cardboard mailing tubes that offer superior protection during shipping and storage? At CardboardCore, we specialize in high-quality mailing and storage solutions tailored to meet the demands of businesses that ship large-format prints, posters, blueprints, artwork, and more. Durable 4-Inch Mailing Tubes for Commercial and Industrial Use Our 4” inner diameter mailing tubes are manufactured from thick, spiral-wound Kraft fiberboard, with .125 wall thickness for maximum strength and rigidity. These tubes protect your items from bending, crushing, and moisture—ideal for industries such as: Print shops and design studios shipping large format documents Art galleries and museums needing secure packaging for artwork Engineering and architectural firms transporting blueprints and schematics Manufacturers shipping custom parts or rolled goods Each tube is designed to hold up under pressure—literally—making them ideal for both short- and long-distance shipments. Key Features of Our 4-Inch Mailing Tubes .125" thick construction: Built from durable Kraft paperboard that resists dents and moisture Wide 4" inner diameter: Perfect for bulky or large rolled items Custom lengths available: Standard and made-to-order options Plastic or metal end caps: Secure closures to prevent shifting during transit Recyclable & eco-friendly: 100% recyclable materials for sustainable shipping Browse our selection below to find the right length and closure type for your application. Why Choose CardboardCore? At CardboardCore, we’re more than just a tube supplier—we’re a reliable packaging partner for manufacturers, distributors, and retailers nationwide. Our commitment to quality, fast lead times, and custom solutions make us the trusted source for businesses that need packaging that performs. - [Labelmate Label Rewinders](https://cardboardcore.com/collections/labelmate-label-rewinders): ## Products - [Sealer Sales 12" W-Series Table Top Direct With 15mm Serrated Seal Width - PTFE Coated - (1 Count)](https://cardboardcore.com/products/sealer-sales-12-w-series-table-top-direct-with-15mm-serrated-seal-width-ptfe-coated-1-count): FEATURES: Consistent seals each time Easy to operate Strong 15mm seal width Protector bars around sealing jaws Seals a variety of thermoplastic materials Equipped with a German manufactured temperature controller PTFE coated jaws Footswitch allowing hands free operation W-300DAT(S) is a table-top direct heat sealer equipped with an electronic timer to control the sealing time. Once the correct setting has been established, consistent seals will be maintained automatically. This 12" sealer comes in ivory with a 15mm wide meshed or serrated jaws and a foot switch for a semi-automatic setting. The hot sealing bars are enclosed with a heat resistant plastic bar for safer operation. Direct heat sealers seal all types of thermoplastic packaging material, but are especially ideal for thicker material such as coated aluminum foil, Kraft paper, cellophane, mylar, coated PP. Please note direct heat sealer cannot seal polyethylene materials. Depending on the model of the sealer, material up to 12" wide and 20 mil thick can be sealed. The meshed or serrated seal width is 15mm. Equipped with a German manufactured temperature controller that accurately controls the temperature from 30°-550° F (0°-300° C). Both jaws are heated simultaneously resulting in better heat penetration to seal thicker material. Includes adjustable work table. Easy to operate. Set the temperature depending on the material to be sealed. Once the correct setting has been reached, consistent seals will be maintained automatically. Insert the material between the two sealing bars. Press down on the foot pedal and release. Specifications: W-300DAT W-300DATS Sealing Length 12" 12" Seal Width 15MM 15MM Seal Type Meshed Serrated Power 110V / 350W 110V / 350W Temperature Range 0 - 300°C / 30 - 550°F 0 - 300°C / 30 - 550°F Dimensions 13" x 14" x 17" 13" x 14" x 17" Shipping Dimensions 17" x 15" x 16" 17" x 15" x 16" Weight(lbs) 38 38 | price 686.13 USD | tags beastbranding+cardboardcore, cannabis processing, cannabis processing and handling, CAT-Machine, CAT-SEALER, CAT-Sealersales, free shipping exempt, grow processing and handling, HEAT SEALER, Machine, marijuana processing, marijuana processing and handling, processing, Processing & Handling Supplies', Processing and Hand Supplies, processing and handing, processing and handling, PROCESSING AND HANDLING SUPPLIES, processing equipment, sealer, sell-out-of-stock, specialorder, weed processing, weed processing and handling | published 2026-01-19 | updated 2026-01-20 - [Sealer Sales 12" KF-Series Foot Sealer With 5mm Seal Width - (1 Count)](https://cardboardcore.com/products/sealer-sales-12-kf-series-foot-sealer-with-5mm-seal-width-1-count): Our KF-Series foot sealers are ideal for high volume poly bag and other thermoplastic sealing. The sealers are capable of sealing 15-20 bags per minute. These sealers allow you to keep both hands free for quicker and more accurate sealing. The machines are also equipped with a plug-in timer. The timer controls the sealing time needed for different materials. Once the timer is set, it will give a consistently flat seal. When the seal is done, the signal light on the timer will turn off. Our KF-Series foot sealers are available in 12”, 18”, and 24” with a 2.5mm or 5mm seal width. Depending on the model of the sealer, materials up to 24” wide and 16 mil total thickness can be sealed. The sealers include a 26” pedestal, a 2” base, an adjustable worktable and an adjustable foot control. Work table measures 12” x 6-1/2” and can adjust from 3-1/2” – 9” from the sealing base. The manufacturer’s replacement kit includes two elements and one fuse. The 2mm seal width units are ETL Listed.Easy to Operate: Set the timer. Insert the bag between the two sealing bars and press down on the foot board. Hold down the foot board for an additional 2-3 seconds after the timer light goes off to set the seal. FEATURES: Ideal for high volume sealing Plug-in electronic time for variable control All metal construction No warm-up time Sits on rectangular base for stability ETL Listed (2mm seal width only) Specifications: Model# Seal Length Seal Width Seal Style Power Weight(lbs) KF-305F 12" 5MM 600W 46 30 | price 385.00 USD | tags beastbranding+cardboardcore, cannabis processing, cannabis processing and handling, CAT-Machine, CAT-SEALER, CAT-Sealersales, free shipping exempt, grow processing and handling, HEAT SEALER, Machine, marijuana processing, marijuana processing and handling, processing, Processing & Handling Supplies', Processing and Hand Supplies, processing and handing, processing and handling, PROCESSING AND HANDLING SUPPLIES, processing equipment, sealer, sell-out-of-stock, specialorder, vacuum sealer, weed processing, weed processing and handling | published 2026-01-19 | updated 2026-01-20 - [Sealer Sales 12" KF-Series Hand Sealer With 2mm Seal Width - Blue - (1 Count)](https://cardboardcore.com/products/sealer-sales-12-kf-series-hand-sealer-with-2mm-seal-width-blue-1-count): KF impulse hand sealers seal poly bags and other thermoplastic materials quickly and efficiently without any warm-up time. Depending on the model of the machine, material up to 20” wide and 20mil total thickness can be sealed. The sealers are equipped with a plug-in electronic timer which controls the different sealing times needed for the varying thicknesses of different materials. Available in 4”, 8”, 12”, 16”, 20” with a 2mm, 2.6mm or 5mm seal width. Manufacturers’ kit includes two elements and two PTFE covers. Cut and Seal Applications: Round wire heating elements are available for cut and seal applications. There is no additional charge for the round cut wire. Easy to Operate: Set the timer; insert the bag between the sealing bars, then press down and release. We recommend that the user hold the sealing arm down for an additional second or two to ensure enough time for the bag to set and cool. FEATURES Plug-in electronic timer for variable control All metal construction No warm-up time Round wire option available for seal and cut ETL Listed (2mm seal width only) Specifications: Model# Seal Length Seal Width Seal Style Power Weight(lbs) KF-300H* 12" 2MM 380W 10 30 | price 96.25 USD | tags beastbranding+cardboardcore, cannabis processing, cannabis processing and handling, CAT-Machine, CAT-SEALER, CAT-Sealersales, free shipping exempt, grow processing and handling, hand Sealer, HEAT SEALER, Machine, marijuana processing, marijuana processing and handling, processing, Processing & Handling Supplies', Processing and Hand Supplies, processing and handing, processing and handling, PROCESSING AND HANDLING SUPPLIES, processing equipment, sealer, sell-out-of-stock, specialorder, vacuum sealer, weed processing, weed processing and handling | published 2026-01-19 | updated 2026-01-20 - [Sealer Sales 12" W-Series Table Top Direct With 15mm Meshed Seal Width - PTFE Coated - (1 Count)](https://cardboardcore.com/products/sealer-sales-12-w-series-table-top-direct-with-15mm-meshed-seal-width-ptfe-coated-1-count): FEATURES: Consistent seals each time Easy to operate Strong 15mm seal width Protector bars around sealing jaws Seals a variety of thermoplastic materials Equipped with a German manufactured temperature controller PTFE coated jaws Footswitch allowing hands free operation W-300DAT(S) is a table-top direct heat sealer equipped with an electronic timer to control the sealing time. Once the correct setting has been established, consistent seals will be maintained automatically. This 12" sealer comes in ivory with a 15mm wide meshed or serrated jaws and a foot switch for a semi-automatic setting. The hot sealing bars are enclosed with a heat resistant plastic bar for safer operation. Direct heat sealers seal all types of thermoplastic packaging material, but are especially ideal for thicker material such as coated aluminum foil, Kraft paper, cellophane, mylar, coated PP. Please note direct heat sealer cannot seal polyethylene materials. Depending on the model of the sealer, material up to 12" wide and 20 mil thick can be sealed. The meshed or serrated seal width is 15mm. Equipped with a German manufactured temperature controller that accurately controls the temperature from 30°-550° F (0°-300° C). Both jaws are heated simultaneously resulting in better heat penetration to seal thicker material. Includes adjustable work table. Easy to operate. Set the temperature depending on the material to be sealed. Once the correct setting has been reached, consistent seals will be maintained automatically. Insert the material between the two sealing bars. Press down on the foot pedal and release. Specifications: W-300DAT W-300DATS Sealing Length 12" 12" Seal Width 15MM 15MM Seal Type Meshed Serrated Power 110V / 350W 110V / 350W Temperature Range 0 - 300°C / 30 - 550°F 0 - 300°C / 30 - 550°F Dimensions 13" x 14" x 17" 13" x 14" x 17" Shipping Dimensions 17" x 15" x 16" 17" x 15" x 16" Weight(lbs) 38 38 | price 686.13 USD | tags beastbranding+cardboardcore, cannabis processing, cannabis processing and handling, CAT-Machine, CAT-SEALER, CAT-Sealersales, free shipping exempt, grow processing and handling, HEAT SEALER, Machine, marijuana processing, marijuana processing and handling, processing, Processing & Handling Supplies', Processing and Hand Supplies, processing and handing, processing and handling, PROCESSING AND HANDLING SUPPLIES, processing equipment, sealer, sell-out-of-stock, specialorder, weed processing, weed processing and handling | published 2026-01-19 | updated 2026-01-20 - [Sealer Sales 8" KF-Series Hand Sealer With 5mm Seal Width - White - (1 Count)](https://cardboardcore.com/products/sealer-sales-8-kf-series-hand-sealer-with-5mm-seal-width-white-1-count): KF impulse hand sealers seal poly bags and other thermoplastic materials quickly and efficiently without any warm-up time. Depending on the model of the machine, material up to 20” wide and 20mil total thickness can be sealed. The sealers are equipped with a plug-in electronic timer which controls the different sealing times needed for the varying thicknesses of different materials. Available in 4”, 8”, 12”, 16”, 20” with a 2mm, 2.6mm or 5mm seal width. Manufacturers’ kit includes two elements and two PTFE covers. Cut and Seal Applications: Round wire heating elements are available for cut and seal applications. There is no additional charge for the round cut wire. Easy to Operate: Set the timer; insert the bag between the sealing bars, then press down and release. We recommend that the user hold the sealing arm down for an additional second or two to ensure enough time for the bag to set and cool. FEATURES Plug-in electronic timer for variable control All metal construction No warm-up time Round wire option available for seal and cut ETL Listed (2mm seal width only) Specifications: Model# Seal Length Seal Width Seal Style Power Weight(lbs) KF-205H 8" 5MM 450W 7 30 | price 89.38 USD | tags beastbranding+cardboardcore, cannabis processing, cannabis processing and handling, CAT-Machine, CAT-SEALER, CAT-Sealersales, free shipping exempt, grow processing and handling, hand Sealer, HEAT SEALER, Machine, marijuana processing, marijuana processing and handling, processing, Processing & Handling Supplies', Processing and Hand Supplies, processing and handing, processing and handling, PROCESSING AND HANDLING SUPPLIES, processing equipment, sealer, sell-out-of-stock, specialorder, vacuum sealer, weed processing, weed processing and handling | published 2026-01-19 | updated 2026-01-20 - [Sealer Sales Manual Gummed Tape Kraft Paper Tape Dispenser - (1 Count)](https://cardboardcore.com/products/sealer-sales-manual-gummed-tape-kraft-paper-tape-dispenser-1-count): Designed for the low volume user - up to 50 cartons per day, the SS-800 is our manual gummed tape dispenser that can moisten, cut and dispense gummed tape with a simple hand lever. SS-800 offers a large moistening brush with variable water level and adjustable pressure plate guaranteeing optimal tape moistening for secure carton sealing. This industrial gummed tape dispenser can cut and moisten nearly all types of gummed tape. Length is adjustable up to 42” with an easy to use lever. This unit requires no electricity making this dispenser ideal for any location. FEATURES: Easy to operate – minimal training required Tape length can be adjusted from 4” – 42” Easy to pull lever to dispense tape Large water reservoir Compatible with all types of gummed tape All metal construction for durability No electricity required to operate Specifications: Header 1 Header 2 Length of Tape 4" - 42" Width of Tape 0.8" - 4" Max Roll Diameter 8" Water Reservoir Capacity 40-oz Dimensions 19" x 10" x 10" Weight 22-lbs | price 206.25 USD | tags 8001, beastbranding+cardboardcore, CAT-DispoSupplies, CAT-Machine, CAT-Machine or Paper, CAT-SEALER, CAT-Sealersales, Dispensary Supplies, dispenser, free shipping exempt, Machine, MJONLY, office, sell-out-of-stock, specialorder, tape, TRYMJ | published 2026-01-19 | updated 2026-01-20 - [Sealer Sales 8" KF-Series Hand Sealer With 2mm Seal Width - Blue - (1 Count)](https://cardboardcore.com/products/sealer-sales-8-kf-series-hand-sealer-with-2mm-seal-width-blue-1-count): KF impulse hand sealers seal poly bags and other thermoplastic materials quickly and efficiently without any warm-up time. Depending on the model of the machine, material up to 20” wide and 20mil total thickness can be sealed. The sealers are equipped with a plug-in electronic timer which controls the different sealing times needed for the varying thicknesses of different materials. Available in 4”, 8”, 12”, 16”, 20” with a 2mm, 2.6mm or 5mm seal width. Manufacturers’ kit includes two elements and two PTFE covers. Cut and Seal Applications: Round wire heating elements are available for cut and seal applications. There is no additional charge for the round cut wire. Easy to Operate: Set the timer; insert the bag between the sealing bars, then press down and release. We recommend that the user hold the sealing arm down for an additional second or two to ensure enough time for the bag to set and cool. FEATURES Plug-in electronic timer for variable control All metal construction No warm-up time Round wire option available for seal and cut ETL Listed (2mm seal width only) Specifications: Model# Seal Length Seal Width Seal Style Power Weight(lbs) KF-100H 4" 2MM 160W 6 30 | price 63.25 USD | tags beastbranding+cardboardcore, cannabis processing, cannabis processing and handling, CAT-Machine, CAT-SEALER, CAT-Sealersales, free shipping exempt, grow processing and handling, hand Sealer, HEAT SEALER, Machine, marijuana processing, marijuana processing and handling, processing, Processing & Handling Supplies', Processing and Hand Supplies, processing and handing, processing and handling, PROCESSING AND HANDLING SUPPLIES, processing equipment, sealer, sell-out-of-stock, specialorder, vacuum sealer, weed processing, weed processing and handling | published 2026-01-19 | updated 2026-01-20 - [Sealer Sales 12" Portable Direct Heat Sealer With PTFE Coated Bars - 15mm Seal Width - (1 Count)](https://cardboardcore.com/products/sealer-sales-12-portable-direct-heat-sealer-with-ptfe-coated-bars-15mm-seal-width-1-count): FEATURES: Easy to operate Lightweight Variable temperature control Suitable for thicker materials PTFE coated jaws Seal width: 15mm (0.59") Seal length: 200mm (7.9") and 300mm (11.8") Seal style: serrated Voltage: 110V or 220V KF-200CS and KF-300CS are portable direct heat sealers that are lightweight and easy to use anywhere. Our portable KF-sealers are ideal for sealing small, irregular, or extra long packages. We recommend using this sealer if you are sealing cellophane, coated aluminum foil, Kraft paper, and other thicker materials. Please note direct heat sealers cannot seal polyethylene material. Equipped with an adjustable temperature controller, our KF-CS direct heat sealers allows the user to control the amount of heat needed for different material types. A 5-15 minute warm up time is required to achieve the correct temperature. The sealer is constructed of durable metal with insulated rubber hand grips. Also included with each sealer is a stand for setting your sealer while not in use. Please DO NOT touch the jaws of the sealer until it has cooled down. Easy to Operate: Depending on the material, allow 5-15 minutes of warm up time for the sealer to reach the desired temperature. Just insert the material between the jaws and close the jaws for a few seconds. Release the jaw. Increase or decrease the timing until a satisfactory seal is obtained. Specifications: KF-300CS Power Supply 110V / 220V Watts 190W Seal Width 15mm / 5/8" Seal Length 300mm / 11.8" Power Cord Length 8ft Weight 4lbs | price 275.00 USD | tags beastbranding+cardboardcore, cannabis processing, cannabis processing and handling, CAT-Machine, CAT-SEALER, CAT-Sealersales, free shipping exempt, grow processing and handling, HEAT SEALER, Machine, marijuana processing, marijuana processing and handling, processing, Processing & Handling Supplies', Processing and Hand Supplies, processing and handing, processing and handling, PROCESSING AND HANDLING SUPPLIES, processing equipment, sealer, sell-out-of-stock, specialorder, weed processing, weed processing and handling | published 2026-01-19 | updated 2026-01-20 - [Sealer Sales 4" KF-Series Hand Sealer With 2mm Seal Width - Blue - (1 Count)](https://cardboardcore.com/products/sealer-sales-4-kf-series-hand-sealer-with-2mm-seal-width-blue-1-count): KF impulse hand sealers seal poly bags and other thermoplastic materials quickly and efficiently without any warm-up time. Depending on the model of the machine, material up to 20” wide and 20mil total thickness can be sealed. The sealers are equipped with a plug-in electronic timer which controls the different sealing times needed for the varying thicknesses of different materials. Available in 4”, 8”, 12”, 16”, 20” with a 2mm, 2.6mm or 5mm seal width. Manufacturers’ kit includes two elements and two PTFE covers. Cut and Seal Applications: Round wire heating elements are available for cut and seal applications. There is no additional charge for the round cut wire. Easy to Operate: Set the timer; insert the bag between the sealing bars, then press down and release. We recommend that the user hold the sealing arm down for an additional second or two to ensure enough time for the bag to set and cool. FEATURES Plug-in electronic timer for variable control All metal construction No warm-up time Round wire option available for seal and cut ETL Listed (2mm seal width only) Specifications: Model# Seal Length Seal Width Seal Style Power Weight(lbs) KF-100H 4" 2MM 160W 6 30 | price 59.13 USD | tags beastbranding+cardboardcore, cannabis processing, cannabis processing and handling, CAT-Machine, CAT-SEALER, CAT-Sealersales, free shipping exempt, grow processing and handling, hand Sealer, HEAT SEALER, Machine, marijuana processing, marijuana processing and handling, processing, Processing & Handling Supplies', Processing and Hand Supplies, processing and handing, processing and handling, PROCESSING AND HANDLING SUPPLIES, processing equipment, sealer, sell-out-of-stock, specialorder, vacuum sealer, weed processing, weed processing and handling | published 2026-01-19 | updated 2026-01-20 - [Sealer Sales 24" KF-Series Foot Sealer With 5mm Seal Width - (1 Count)](https://cardboardcore.com/products/sealer-sales-24-kf-series-foot-sealer-with-5mm-seal-width-1-count): Our KF-Series foot sealers are ideal for high volume poly bag and other thermoplastic sealing. The sealers are capable of sealing 15-20 bags per minute. These sealers allow you to keep both hands free for quicker and more accurate sealing. The machines are also equipped with a plug-in timer. The timer controls the sealing time needed for different materials. Once the timer is set, it will give a consistently flat seal. When the seal is done, the signal light on the timer will turn off. Our KF-Series foot sealers are available in 12”, 18”, and 24” with a 2.5mm or 5mm seal width. Depending on the model of the sealer, materials up to 24” wide and 16 mil total thickness can be sealed. The sealers include a 26” pedestal, a 2” base, an adjustable worktable and an adjustable foot control. Work table measures 12” x 6-1/2” and can adjust from 3-1/2” – 9” from the sealing base. The manufacturer’s replacement kit includes two elements and one fuse. The 2mm seal width units are ETL Listed.Easy to Operate: Set the timer. Insert the bag between the two sealing bars and press down on the foot board. Hold down the foot board for an additional 2-3 seconds after the timer light goes off to set the seal. FEATURES: Ideal for high volume sealing Plug-in electronic time for variable control All metal construction No warm-up time Sits on rectangular base for stability ETL Listed (2mm seal width only) Specifications: Model# Seal Length Seal Width Seal Style Power Weight(lbs) KF-605F 24" 5MM 1200W 51 30 | price 481.25 USD | tags beastbranding+cardboardcore, cannabis processing, cannabis processing and handling, CAT-Machine, CAT-SEALER, CAT-Sealersales, free shipping exempt, grow processing and handling, HEAT SEALER, Machine, marijuana processing, marijuana processing and handling, processing, Processing & Handling Supplies', Processing and Hand Supplies, processing and handing, processing and handling, PROCESSING AND HANDLING SUPPLIES, processing equipment, sealer, sell-out-of-stock, specialorder, vacuum sealer, weed processing, weed processing and handling | published 2026-01-19 | updated 2026-01-20 - [Sealer Sales Horizontal Band Sealer Embossing - Left Feed - (1 Count)](https://cardboardcore.com/products/sealer-sales-horizontal-band-sealer-embossing-left-feed-1-count): Suitable for sealing all types of plastic materials and bags. One of our most popular band sealers with a great value propositions. Can seal 20-26 6" wide poly bags per minute.FEATURES: Durable stainless steel Easy to operate - minimal operator training Fast warm up time Seals any thermoplastic material including PE, PP, and laminates Solid state temperature controller to maintain seal bars at proper temperature for consistent seal quality Motorized rubber conveyor with speed control Knurled pressure wheel rolls with variable pressure adjustment One pair each of cooling and heating blocks Sealing method - constant direct heat Unit feeds left to right Equipped with an emergency stop button Includes wheel to emboss on seal line without ink Manufacturer’s spare parts kit includes: PTFE sealing belt, drive belt, PC Board, tools, and and typesets (numbers 0-9 and letters EXD) OPTIONAL FEATURES: Smooth or serrated seal option Stainless steel stand for horizontal units only 15mm seal width Digital counter to keep track of sealed packages Specifications: Header 1 Header 2 Power 110V / 60Hz Motor / Sealing Power 50W / 300W x 2 Sealing Speed 0-630"/min Seal Width 10MM Temperature Range 0-300°C Conveyor Size 38" x 7" Max. Conveyor Load Under 22-lbs Character Size 3 x 4 x 9mm Optional Embossing 1 Line Embossing (3 sections with 15 characters/line) Dimensions 33" x 17" x 13" Weight (lbs) 66 | price 940.00 USD | tags BAND, BAND SEALER, beastbranding+cardboardcore, cannabis processing, cannabis processing and handling, CAT-Machine, CAT-SEALER, CAT-Sealersales, dropship, free shipping exempt, grow processing and handling, Machine, marijuana processing, marijuana processing and handling, processing, Processing & Handling Supplies', Processing and Hand Supplies, processing and handing, processing and handling, PROCESSING AND HANDLING SUPPLIES, processing equipment, sell-out-of-stock, specialorder, vacuum sealer, weed processing, weed processing and handling | published 2026-01-19 | updated 2026-01-20 - [Sealer Sales 8" Portable Direct Heat Sealer With PTFE Coated Bars - 15mm Seal Width - (1 Count)](https://cardboardcore.com/products/sealer-sales-8-portable-direct-heat-sealer-with-ptfe-coated-bars-15mm-seal-width-1-count): FEATURES: Easy to operate Lightweight Variable temperature control Suitable for thicker materials PTFE coated jaws Seal width: 15mm (0.59") Seal length: 200mm (7.9") and 300mm (11.8") Seal style: serrated Voltage: 110V or 220V KF-200CS and KF-300CS are portable direct heat sealers that are lightweight and easy to use anywhere. Our portable KF-sealers are ideal for sealing small, irregular, or extra long packages. We recommend using this sealer if you are sealing cellophane, coated aluminum foil, Kraft paper, and other thicker materials. Please note direct heat sealers cannot seal polyethylene material. Equipped with an adjustable temperature controller, our KF-CS direct heat sealers allows the user to control the amount of heat needed for different material types. A 5-15 minute warm up time is required to achieve the correct temperature. The sealer is constructed of durable metal with insulated rubber hand grips. Also included with each sealer is a stand for setting your sealer while not in use. Please DO NOT touch the jaws of the sealer until it has cooled down. Easy to Operate: Depending on the material, allow 5-15 minutes of warm up time for the sealer to reach the desired temperature. Just insert the material between the jaws and close the jaws for a few seconds. Release the jaw. Increase or decrease the timing until a satisfactory seal is obtained. Specifications: KF-200CS Power Supply 110V / 220V Watts 120W Seal Width 15mm / 5/8" Seal Length 200mm / 7.9" Power Cord Length 8ft Weight 4lbs | price 188.38 USD | tags beastbranding+cardboardcore, cannabis processing, cannabis processing and handling, CAT-Machine, CAT-SEALER, CAT-Sealersales, free shipping exempt, grow processing and handling, HEAT SEALER, Machine, marijuana processing, marijuana processing and handling, processing, Processing & Handling Supplies', Processing and Hand Supplies, processing and handing, processing and handling, PROCESSING AND HANDLING SUPPLIES, processing equipment, sealer, sell-out-of-stock, specialorder, weed processing, weed processing and handling | published 2026-01-19 | updated 2026-01-20 - [Sealer Sales 8" W-Series Direct Heat Foot Sealer With 15mm Meshed Seal Width - PTFE Coated - (1 Count)](https://cardboardcore.com/products/sealer-sales-8-w-series-direct-heat-foot-sealer-with-15mm-meshed-seal-width-ptfe-coated-1-count): FEATURES: Easy to operate Protector bars around sealing jaws Seals a variety of thermoplastic materials German manufactured temperature controller PTFE coated jaws Seal length: 8" (200mm), 12" (300mm), 18" (450mm) Seal width: 15mm Seal style: meshed or serrated Option: sit down or stand up operation Introducing our top-of-the-line W-Series Direct Heat Sealers, designed to seal a wide range of thermoplastic materials with precision and efficiency. These sealers handle various materials, including coated aluminum foil, Kraft paper, cellophane, polypropylene, poly-nylon, and even thicker options. Please note that while these sealers can tackle a multitude of materials, they are not suitable for sealing polyethylene. Choose from two models: units ending in DT come equipped with meshed (++) seal bars, while the DTS models come equipped with serrated (==) seal bars. With the capacity to seal materials up to an impressive 18 inches in width and 20 mils in total thickness, our W-Series sealers boast a German-manufactured thermostat, ensuring precise temperature control from 30° to 550° F (0° to 300° C). The simultaneous heating of both jaws ensures excellent heat penetration, especially when sealing thicker materials. We understand the need for adaptability, which is why our direct heat sealers feature an adjustable work table to accommodate various sealing projects. Moreover, the standard 26" pedestal stand offers a sturdy and ergonomic setup, while an optional 36" stand is available for added convenience. Safety is paramount, and that's why our W-Series sealers come equipped with protector bars around the jaws, ensuring maximum protection. Operating our W-Series sealers is a simple! Simply set the desired temperature on the temperature controller based on your material's requirements. Just insert the material between the two sealing bars, press down on the footboard to activate sealing. Join countless satisfied customers who have already experienced the efficiency, precision, and ease-of-use of our W-Series Direct Heat Sealers. Specifications: Model# Seal Length Seal Width Seal Style Power Weight(lbs) W-220DT 8" 15MM Meshed 250W 30 | price 397.38 USD | tags beastbranding+cardboardcore, cannabis processing, cannabis processing and handling, CAT-Machine, CAT-SEALER, CAT-Sealersales, free shipping exempt, grow processing and handling, HEAT SEALER, Machine, marijuana processing, marijuana processing and handling, processing, Processing & Handling Supplies', Processing and Hand Supplies, processing and handing, processing and handling, PROCESSING AND HANDLING SUPPLIES, processing equipment, sealer, sell-out-of-stock, specialorder, weed processing, weed processing and handling | published 2026-01-19 | updated 2026-01-20 - [Sealer Sales 6" Portable Direct Heat Sealer With PTFE Coated Bars - 15mm Seal Width - (1 Count)](https://cardboardcore.com/products/sealer-sales-6-portable-direct-heat-sealer-with-ptfe-coated-bars-15mm-seal-width-1-count): FEATURES: Easy to operate Lightweight Suitable for thicker materials PTFE coated jaws Seal width: 15mm (0.59") Seal length: 150mm (5.9") Seal style: serrated Voltage: 110V or 220V Option: pedal and clamp set to convert into a foot sealer The KF-150 Series are portable, lightweight heat sealers that can be used anywhere; ideal for sealing small, irregular, or extra long packages. Constructed with a high impact ABS thermal casting for heavy duty applications. KF-150CST - Two temperature settings (high / low) - 215° F and 350° F KF-150CSTA - Adjustable temperature settings for a wider range of sealing materials (284-392° F) Easy to Operate: Depending on the material, allow 5-15 minutes of warm up time for the sealer to reach the desired temperature. Just insert the material between the jaws and close the jaws for a few seconds. Release the jaw. Increase or decrease the timing until a satisfactory seal is obtained. Specifications: header 1 Header 2 Seal Length 6" Seal Width 5/8" / 15mm Power Supply 110V or 220V Watts 50W Power Cord 7ft Weight(lbs) 2 Dimensions 7" x 7" x 3" | price 150.00 USD | tags beastbranding+cardboardcore, cannabis processing, cannabis processing and handling, CAT-Machine, CAT-SEALER, CAT-Sealersales, free shipping exempt, grow processing and handling, HEAT SEALER, Machine, marijuana processing, marijuana processing and handling, processing, Processing & Handling Supplies', Processing and Hand Supplies, processing and handing, processing and handling, PROCESSING AND HANDLING SUPPLIES, processing equipment, sealer, sell-out-of-stock, specialorder, weed processing, weed processing and handling | published 2026-01-19 | updated 2026-01-20 - [Sealer Sales 18" KF-Series Foot Sealer With 5mm Seal Width - (1 Count)](https://cardboardcore.com/products/sealer-sales-18-kf-series-foot-sealer-with-5mm-seal-width-1-count): Our KF-Series foot sealers are ideal for high volume poly bag and other thermoplastic sealing. The sealers are capable of sealing 15-20 bags per minute. These sealers allow you to keep both hands free for quicker and more accurate sealing. The machines are also equipped with a plug-in timer. The timer controls the sealing time needed for different materials. Once the timer is set, it will give a consistently flat seal. When the seal is done, the signal light on the timer will turn off. Our KF-Series foot sealers are available in 12”, 18”, and 24” with a 2.5mm or 5mm seal width. Depending on the model of the sealer, materials up to 24” wide and 16 mil total thickness can be sealed. The sealers include a 26” pedestal, a 2” base, an adjustable worktable and an adjustable foot control. Work table measures 12” x 6-1/2” and can adjust from 3-1/2” – 9” from the sealing base. The manufacturer’s replacement kit includes two elements and one fuse. The 2mm seal width units are ETL Listed.Easy to Operate: Set the timer. Insert the bag between the two sealing bars and press down on the foot board. Hold down the foot board for an additional 2-3 seconds after the timer light goes off to set the seal. FEATURES: Ideal for high volume sealing Plug-in electronic time for variable control All metal construction No warm-up time Sits on rectangular base for stability ETL Listed (2mm seal width only) Specifications: Model# Seal Length Seal Width Seal Style Power Weight(lbs) KF-455F 18" 5MM 900W 48 30 | price 453.75 USD | tags beastbranding+cardboardcore, cannabis processing, cannabis processing and handling, CAT-Machine, CAT-SEALER, CAT-Sealersales, free shipping exempt, grow processing and handling, HEAT SEALER, Machine, marijuana processing, marijuana processing and handling, processing, Processing & Handling Supplies', Processing and Hand Supplies, processing and handing, processing and handling, PROCESSING AND HANDLING SUPPLIES, processing equipment, sealer, sell-out-of-stock, specialorder, vacuum sealer, weed processing, weed processing and handling | published 2026-01-19 | updated 2026-01-20 - [Sealer Sales Horizontal Band Sealer Embossing - Right Feed - (1 Count)](https://cardboardcore.com/products/sealer-sales-horizontal-band-sealer-embossing-right-feed-1-count): Suitable for sealing all types of plastic materials and bags. One of our most popular band sealers with a great value propositions. Can seal 20-26 6" wide poly bags per minute.FEATURES: Durable stainless steel Easy to operate - minimal operator training Fast warm up time Seals any thermoplastic material including PE, PP, and laminates Solid state temperature controller to maintain seal bars at proper temperature for consistent seal quality Motorized rubber conveyor with speed control Knurled pressure wheel rolls with variable pressure adjustment One pair each of cooling and heating blocks Sealing method - constant direct heat Unit feeds right to left Equipped with an emergency stop button Includes wheel to emboss on seal line without ink Can easily be converted to a vertical configuration with an optional converting kit Manufacturer’s spare parts kit include: PTFE sealing belt, drive belt, PC Board, tools, and typesets (numbers 0-9 and letters EXD) OPTIONAL FEATURES: Smooth or serrated sesal Stainless steel stand for horizontal units only 15mm or 30mm seal width Digital counter to keep track of sealed packages Specifications: Header 1 Header 2 Power 110V / 60Hz Motor/Sealing Power 50W / 300 x 2 Sealing Speed 0-630"/min Seal Width 10MM Temperature Range 0-300°C Conveyor Size 38" x 7" Max. Conveyor Load Under 22-lbs Character Size 3 x 4 x 9mm Optional Embossing 1 Line Embossing (3 sections with 15 characters/line) Dimensions 33" x 15" x 13" Weight (lbs) 66 | price 747.50 USD | tags BAND, BAND SEALER, beastbranding+cardboardcore, cannabis processing, cannabis processing and handling, CAT-Machine, CAT-SEALER, CAT-Sealersales, free shipping exempt, grow processing and handling, Machine, marijuana processing, marijuana processing and handling, processing, Processing & Handling Supplies', Processing and Hand Supplies, processing and handing, processing and handling, PROCESSING AND HANDLING SUPPLIES, processing equipment, sell-out-of-stock, specialorder, vacuum sealer, weed processing, weed processing and handling | published 2026-01-19 | updated 2026-01-20 - [3" Cardboard Cores – .125" & .25" Thick | Bulk & Custom](https://cardboardcore.com/products/cardboard-cores-3-id-with-125-or-25-thickness): Order heavy-duty 3” ID cardboard cores in .125" or .25" wall thickness. Ideal for film, labels & industrial use. Fast shipping & custom options. | price starting at 0.27 USD | tags 3" ID, CAT-Cardboard-Cores, Core Diameter_3" (76mm) | published 2024-07-12 | updated 2026-02-11 - [Custom Cardboard Cores - 1" or 2" Inner Diameter](https://cardboardcore.com/products/cardboard-cores-1-2-or-3-inner-diameter): Inner diameter: 1 inch Length: up to 60 inches Color: Brown Country of origin: United States Unit: 1 | price starting at 0.14 USD | tags 1" ID, 2" ID, CAT-Cardboard-Cores | published 2024-07-12 | updated 2026-02-10 - [4" Inner Diameter Cardboard Kraft Tubes](https://cardboardcore.com/products/4-inner-diameter-cardboard-mailing-tubes): Specification Inner diameter: 4 inches Length: up to 48 inches Color: Brown Country of Origin: United States Unit: 1 | price starting at 2.30 USD | tags 4" ID, CAT-mailing-tubes, Heavy Duty tubes, Mailing Tubes | published 2024-02-01 | updated 2026-02-11 - [3" Inner Diameter Cardboard Kraft Tubes](https://cardboardcore.com/products/3-inner-diameter-cardboard-mailing-tubes): Specification Inner diameter:3 inches Length: up to 48 inches Color: Brown Country of Origin: United States Unit: 1 | price starting at 2.00 USD | tags 3" ID, CAT-mailing-tubes, Heavy Duty tubes, Mailing Tubes, sell-out-of-stock | published 2024-02-01 | updated 2026-02-05 - [2" Inner Diameter Cardboard Tubes](https://cardboardcore.com/products/2-inner-diameter-cardboard-mailing-tubes): Specification Inner diameter: 2 inches Length: up to 48 inches. Color: Brown Country of Origin: United States Unit: 1 | price starting at 1.70 USD | tags 2"ID, CAT-mailing-tubes, Heavy Duty tubes, Mailing Tubes | published 2024-02-01 | updated 2026-02-07 ## Pages - [FAQ](https://cardboardcore.com/pages/faq): - [Contact](https://cardboardcore.com/pages/contact): ## Blog posts - [Choose the Right Cardboard Core | Sizing & Thickness Tips](https://cardboardcore.com/blogs/news/how-to-choose-the-right-cardboard-core-for-your-application): Learn how to pick the best cardboard core size and wall thickness for labels, film, or textiles. Compare 1", 2", and 3" ID options. Custom sizes available. 2025-04-07 | tags 3 inch core, cardboard cores, core sizes, film rolls, industrial cardboard tubes, label winding, wall thickness - [Custom Paper Tubing for Tape, Labels, and Packaging – CardboardCore.com](https://cardboardcore.com/blogs/news/high-quality-paper-tubing-for-all-your-winding-and-packaging-needs-cardboardcore-com): Discover durable, customizable paper tubing solutions for tape, labels, films, and more at CardboardCore.com. Eco-friendly, cost-effective products for your business. 2024-12-17 | tags custom paper tubing, eco-friendly paper tubes, label tubes, packaging cores, paper tubes, tape tubes - [High-Quality Paper Tubes for Packaging and Manufacturing ](https://cardboardcore.com/blogs/news/high-quality-paper-tubes-for-packaging-and-manufacturing-cardboardcore-com): Cost-Effective: At CardboardCore.com, we believe in providing high-quality products at competitive prices. Our paper tubes offer a cost-effective solution without compromising on performance, helping your business save money while maintaining quality. 2024-12-17 | tags custom paper tubes, eco-friendly paper tubes, film roll tubes, label tubes, paper tubes, tape tubes - [High-Quality Paper Cores for Your Packaging and Manufacturing ](https://cardboardcore.com/blogs/news/high-quality-paper-cores-for-your-packaging-and-manufacturing-needs-cardboardcore-com): Each of our paper cores is carefully crafted to ensure the highest standards of durability, precision, and reliability. We understand that your business depends on the performance of the materials we supply, and that’s why we prioritize quality at every stage of production. Cost-Effective: High-quality paper cores from CardboardCore.com offer an affordable solution for your core needs. We deliver competitive pricing without sacrificing quality or performance. 2024-12-17 | tags cardboard cores, custom paper cores, eco-friendly cores, label cores, paper cores, paperboard cores, tape cores - [Expert Solutions for Converting Cores – Custom Cardboard Cores](https://cardboardcore.com/blogs/news/expert-solutions-for-converting-cores-custom-cardboard-cores-from-cardboardcore-com): Choosing the right converting core is crucial for your business. A poor-quality core can lead to issues such as poor roll tension, product damage, and inefficiencies in production. At CardboardCore.com, we prioritize quality at every stage of the manufacturing process. We use only the best materials and advanced production techniques to ensure that our cores perform reliably, every time. 2024-12-17 | tags cardboard cores, custom converting cores, eco-friendly cardboard cores, label cores, packaging cores, tape cores - [Why Choose CardboardCore.com for Your Custom Cores?](https://cardboardcore.com/blogs/news/why-choose-cardboardcore-com-for-your-custom-cores): Why Choose CardboardCore.com for Your Custom Cores? When it comes to custom cardboard cores, not all solutions are created equal. At CardboardCore.com, we offer a wide variety of custom core sizes, shapes, and materials to perfectly match your packaging or production needs. 2024-12-17 | tags Cardboard core solutions, Cardboard cores for tapes and labels, Custom cardboard cores, Custom packaging support, Durable packaging cores, Eco-friendly cores, High-quality cardboard cores, Label cores, Packaging cores, Recyclable cores, Tape cores - [Six Factors to Consider When Selecting the Best Cardboard Cores](https://cardboardcore.com/blogs/news/six-factors-to-consider-when-selecting-the-best-cardboard-cores): Read this blog to know all about cardboard cores, what their use is, how they are manufactured, & what factors must be considered when buying cardboard cores. 2024-04-10 | tags Applications of Cardboard Cores, Cardboard Cores and Mailing Tubes, Cardboard Cores applications, Custom Cardboard Cores, How to manufacture cardboard cores?, How to select the best cardboard cores?, What are cardboard cores?, What are mailing tubes, What is the use of cardboard cores?, Where to buy wholesale cardboard cores?, Wholesale cardboard cores, Wholesale mailing tubes - [What are cardboard cores? Its benefits, uses, and applications](https://cardboardcore.com/blogs/news/what-are-cardboard-cores-its-benefits-uses-and-applications): This blog discusses cardboard cores, mailing tubes, their benefits, uses, and industrial applications and why you should buy them wholesale in bulk quantities 2024-03-15 | tags Cardboard cores industrial uses, Industrial application of Cardboard Cores, Online wholesale cardboard core, Uses of cardboard cores, Uses of mailing tubes, What are cardboard cores?, What are mailing tubes?, What are the benefits of cardboard cores?, What is the use of cardboard core?, What is the use of mailing tubes?, Where to buy cardboard cores?, Wholesale cardboard cores, Wholesale cardboard tubes, Wholesale mailing tubes, Wholesale paper tubes ## Optional - [robots.txt](https://cardboardcore.com/robots.txt) - [sitemap.xml](https://cardboardcore.com/sitemap.xml)