Ningbo Kaxite Sealing Materials Co., Ltd.
Ningbo Kaxite Sealing Materials Co., Ltd.
Products

China cork sheet wholesale manufacturer with custom OEM solutions

Kaxite Cork Sheet: The Natural, Sustainable Material for Demanding Applications

Welcome to the definitive resource for high-performance cork sheeting. At Kaxite, we specialize in crafting premium Cork Sheet materials that leverage the inherent, remarkable properties of natural cork. Sourced from the bark of the cork oak tree in a sustainable, renewable harvesting process, our sheets offer a unique combination of functionality, durability, and environmental responsibility that synthetic alternatives cannot match. This guide provides a comprehensive overview of our product specifications, applications, and the key benefits of choosing our engineered cork solutions.

Our cork sheet products are meticulously manufactured in controlled environments to ensure consistent quality, density, and performance. They are not simply raw cork; they are engineered products designed to meet precise industrial, commercial, and craft requirements. Whether you need vibration damping, thermal or acoustic insulation, gasketing, or a comfortable, slip-resistant surface, our cork sheet provides a versatile and reliable solution.

Key Features and Benefits of Kaxite Cork Sheet

  • Natural and Renewable: Cork is harvested without harming the tree, making it an eco-friendly, biodegradable, and sustainable material choice.
  • Excellent Compressibility and Recovery: Cork cells act like microscopic air cushions, allowing the sheet to compress under pressure and bounce back to its original shape, making it ideal for seals and gaskets.
  • Superior Thermal and Acoustic Insulation: The trapped air within the cellular structure provides outstanding resistance to heat transfer and sound waves.
  • Vibration Damping: Effectively absorbs shocks, vibrations, and impacts, protecting machinery and providing a quieter operation.
  • Impermeable to Liquids and Gases: Suberin, a natural waxy substance in cork, makes it resistant to moisture and liquid penetration, preventing rot.
  • Fire Retardant: Natural cork is inherently fire-resistant, charring without emitting toxic fumes, enhancing safety in various applications.
  • Lightweight and Durable: Offers high strength-to-weight ratio and resists wear, abrasion, and degradation over time.
  • Easy to Fabricate: Can be easily cut, stamped, routed, and glued using standard workshop tools.

Technical Specifications and Product Parameters

Kaxite Cork Sheet is available in a variety of standard grades and dimensions to suit different needs. Below are our core product specifications. Custom sizes, densities, and backing materials (such as adhesive or rubber) are available upon request for OEM and large-scale projects.

Standard Material Grades & Properties

Grade Code Density (kg/m³) Typical Thickness Range Tensile Strength (MPa) Primary Application Focus
KS-NAT (Natural) 180-220 1mm - 50mm 0.8 - 1.2 General purpose, crafts, bulletin boards, insulation
KS-COM (Commercial) 220-280 3mm - 25mm 1.2 - 1.6 Gaskets, floor underlayment, vibration pads
KS-IND (Industrial) 300-400 5mm - 20mm 1.8 - 2.5 Heavy-duty machinery mounts, industrial sealing, high-pressure applications
KS-AGR (Agglomerated Composite) 400-550 10mm - 100mm 2.5 - 3.5 Acoustic wall/ceiling panels, structural insulation blocks

Standard Sheet Dimensions & Packaging

Format Standard Size (Width x Length) Available Thickness Sheets per Pack
Rolls 1.0m x 10m / 1.2m x 25m 1mm, 1.5mm, 2mm, 3mm 1 roll
Sheets 910mm x 610mm / 1000mm x 500mm 3mm - 25mm 10, 20, 50
Tiles 300mm x 300mm / 600mm x 600mm 4mm, 6mm, 8mm 20, 40
Custom Blanks Up to 1.5m x 3.0m 5mm - 100mm Per order

Physical & Performance Data (Typical Values for KS-COM Grade)

  • Operating Temperature Range: -40°C to 120°C (short peaks up to 150°C)
  • Thermal Conductivity (λ): 0.040 - 0.045 W/(m·K)
  • Sound Absorption Coefficient (NRC): 0.25 - 0.40 (varies with thickness/density)
  • Compression Set (22h @ 70°C): < 15%
  • Water Absorption (24h immersion): < 5% by volume
  • Fire Rating: Class B (EN 13501-1), meets relevant ASTM standards.

Industry Applications of Cork Sheet

The versatility of Kaxite Cork Sheet makes it indispensable across multiple sectors:

  • Automotive & Aerospace: Gaskets, seals, vibration-damping mounts, thermal barriers in panels.
  • Construction & Architecture: Expansion joint filler, floor and wall underlayment for soundproofing, bulletin boards, pin-up boards.
  • Industrial Manufacturing: Machinery mounts, anti-vibration pads, protective lining for fixtures, die-cut seals and gaskets.
  • Marine: Flotation aids, insulation for pipes and hulls, non-slip decking underlay.
  • Consumer Goods & Crafts: Notice boards, tabletops, yoga block cores, model making, DIY projects.
  • Music & Acoustics: Acoustic panel infill, isolation pads for speakers and instruments, drum riser mats.

Frequently Asked Questions (FAQ) About Cork Sheet

Q: What exactly is a cork sheet made of?
A: Kaxite Cork Sheet is primarily composed of granulated natural cork bark, which is cleaned, graded, and then bonded together under heat and pressure. The binding agent is typically the cork's own natural resins or, for specific grades, a non-toxic, water-based polyurethane binder. This process creates a homogeneous, consistent slab material with uniform properties.

Q: How do I choose the right density and thickness for my project?
A: Selection depends on the primary function. For compression sealing (gaskets), a medium-density sheet (KS-COM, 220-280 kg/m³) in 3-6mm thickness is common. For heavy vibration damping, a higher density (KS-IND, 300+ kg/m³) and greater thickness (10-20mm) is recommended. For acoustic or thermal insulation, thickness is more critical than density; a 25-50mm KS-AGR or KS-NAT sheet provides excellent performance. Our technical team can assist with specific recommendations.

Q: Can cork sheet be used outdoors or in damp environments?
A: Yes, natural cork contains suberin, making it highly resistant to moisture and rot. For prolonged outdoor exposure or direct water contact, we recommend sealing the edges and surfaces with a compatible water-based sealer or varnish to prolong its life and maintain appearance. Our KS-IND grade offers the best inherent moisture resistance.

Q: How do I cut and fabricate cork sheet?
A: Cork sheet is very user-friendly. It can be easily cut with a sharp utility knife, band saw, or laser cutter (with proper ventilation). For punching holes or intricate shapes, die-cutting or CNC routing is effective. Always use sharp blades to prevent tearing. For gluing, PVA (white glue), contact cement, or cork-specific adhesives work well on clean, dry surfaces.

Q: Is Kaxite cork sheet environmentally friendly?
A: Absolutely. Cork harvesting is a sustainable practice where the tree bark regenerates every 9-12 years. Our manufacturing process minimizes waste, uses non-toxic binders where applicable, and the end product is biodegradable and recyclable. Choosing cork helps promote sustainable forestry and reduces reliance on petroleum-based foams.

Q: What is the difference between natural cork sheets and composite cork rubber sheets?
A: Our standard cork sheet is pure cork agglomerate. We also produce composite sheets where cork granules are bonded with nitrile or EPDM rubber. These composites enhance properties like oil/fuel resistance, extreme flexibility, and adhesion to metals, making them superior for demanding sealing applications in automotive or chemical environments.

Q: How should cork sheets be stored?
A: Store sheets flat in a cool, dry place away from direct sunlight and heat sources. Keep them in their original packaging until use to prevent dust accumulation and edge damage. Do not stack excessively heavy weights on top of thin sheets to prevent permanent compression.

Q: Can I paint or finish the surface of the cork sheet?
A: Yes, cork sheet accepts most water-based paints, stains, and varnishes. For best results, lightly sand the surface, apply a primer or sealer if a smooth finish is desired, and then apply your chosen topcoat. Always test a small area first for compatibility.

Why Partner with Kaxite for Your Cork Sheet Needs?

Kaxite stands as a leader in engineered cork products through an unwavering commitment to quality control, sustainable sourcing, and customer-specific solutions. Our in-house technical expertise ensures we can support projects from prototype to full-scale production. We offer not just a material, but a partnership aimed at solving engineering and design challenges with a natural, high-performance solution. Contact our sales team today with your specifications to receive a detailed quote or request samples to test the superior quality of Kaxite Cork Sheet in your own application.

View as  
 
Cork Sheet

Cork Sheet

Kaxite Cork sheet is made from clean granulated cork mixed with resin binder, which is compressed to form black, split into sheets.
Cork Rubber Sheet

Cork Rubber Sheet

Kaxite Cork rubber sheet is made by using granulated cork and synthetic rubber polymer and their assistants. The cork mixed material such as neoprene and nitrile, silicone, vitone, etc. Please contact with us to help you with your cork rubber sheet needs.
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