FN3108 PUR Adhesives for Sponge Bonding

The Advantages of Our PUR Hot Melt Adhesive for Sponge Bonding

1. High Initial Tack for Stable Lamination

Our PUR hot melt adhesive provides high initial tack to hold foam and facing materials firmly in place immediately after application. It helps reduce material shifting, edge lifting, wrinkling, and delamination during sponge and fabric lamination processes.

2. Strong and Durable Bonding

After moisture curing, the adhesive forms a durable cross-linked bond between sponge, textile fabrics, nonwovens, artificial leather, and other flexible substrates. It is suitable for applications requiring reliable long-term bonding strength.

3. Soft and Flexible Bond Line

Designed for flexible composite materials, PUR adhesive can maintain a soft and flexible bonding layer after curing. This helps preserve the comfort, cushioning performance, and natural hand feel of foam-laminated products.

4. Helps Prevent Wrinkling and Delamination

Stable initial adhesion helps keep foam and fabric layers aligned during production. This reduces the risk of wrinkles, uneven lamination, material movement, and separation before the adhesive reaches its final curing strength.

5. Resistance for Demanding End Uses

Selected PUR adhesive grades can provide resistance to washing, dry cleaning, heat, humidity, and aging. They are suitable for sponge bonding applications in textiles, home furnishings, upholstery, and automotive interiors.

6. Solvent-Free and Cleaner Processing

PUR hot melt adhesive is a 100% solids adhesive system that does not require solvent evaporation during application. It supports cleaner production and can help manufacturers meet the material and environmental requirements of different end markets.

Key Process Description

1. Controlled Heating and Melting

The PUR adhesive is heated in a suitable PUR melter to reach the recommended application temperature. Proper temperature control helps achieve stable viscosity, uniform coating, and consistent bonding performance during foam lamination.

2. Roller, Slot-Die, or Spray Application

The adhesive can be applied by roller coating, slot-die coating, spray coating, or other suitable industrial application systems. The appropriate application method depends on foam density, fabric type, coating weight, line speed, and finished-product requirements.

3. Foam and Fabric Lamination

The foam and facing material are combined under controlled pressure after adhesive application. Appropriate nip pressure and line speed help ensure sufficient wet-out and stable initial bonding without excessive compression or distortion of the foam.

4. Moisture-Curing Action

After lamination, the adhesive reacts with moisture in the air and substrates to form a durable cross-linked structure. Final curing time may vary according to ambient humidity, substrate type, adhesive coating weight, and production conditions.

Typical Sponge Bonding Applications

Underwear and Intimate Apparel

Suitable for laminating foam with fabrics used in bras, molded cups, shapewear, and other intimate apparel components where softness, flexibility, and wash resistance are important.

Home Textiles and Upholstery

Used for foam-backed fabrics, upholstered materials, mattress components, cushions, and other home textile applications that require a stable and durable bond.

Casual Textiles and Composite Fabrics

Suitable for laminating sponge with woven fabrics, knitted fabrics, nonwovens, and heavy textiles used in garments, bags, protective products, and functional textile composites.

Automotive Interior Materials

Can be used for selected automotive interior applications, including foam-backed fabrics, seat materials, headliners, and interior trim components. Material compatibility and performance testing are recommended before mass production.

Packing Details

Available Packaging

We provide packaging options suitable for industrial PUR hot melt adhesive applications:

1) 200 Kg / drum

2) 20 Kg / pail or barrel

Please contact us to confirm the available packaging format, loading quantity, and shipping arrangement for your selected adhesive grade.

Company Information

Sino-Adhesive is a manufacturer of PUR hot melt adhesive, also known as polyurethane reactive adhesive. We provide bonding solutions for textile lamination, sponge bonding, home furnishings, automotive interior trim, woodworking, and other industrial applications.

Located in Jiangmen City, Guangdong Province, China, Sino-Adhesive provides product selection, sample evaluation, technical documentation, and application support for customers with different substrates, equipment, and performance requirements.

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