Polyurethane Hot Melt Glue Sticks for Fabrics: The Ultimate Guide by Kelan Adhesive

1. What Are PUR Hot Melt Glue Sticks? PUR hot melt glue sticks are solid adhesives made from polyurethane prepolymers. Unlike conventional hot melt glues (like EVA), PUR reacts with moisture in the air or substrate to create a cross-linked bond. This results in a permanent, elastic, and extremely durable bond that is especially suited for flexible and delicate materials such as fabrics.

Key Features:

• Moisture-curing for long-term durability

• Excellent flexibility and stretch resistance

• Resistant to washing, heat, and chemicals

• Suitable for natural and synthetic fabrics

2. Why Use PUR Glue for Fabric Bonding? Textile bonding demands adhesives that are:

• Soft and elastic after curing

• Invisible or nearly undetectable on thin fabrics

• Washable and durable over time

• Capable of bonding dissimilar materials (e.g., fabric-to-foam or fabric-to-leather)

Traditional adhesives often fail in these areas. PUR glue stands out because of its superior flexibility, moisture resistance, and strength.

Kelan Advantage: Our PUR formulations for fabric bonding are optimized for:

• Apparel (sportswear, lingerie, outdoor gear)

• Automotive (seat covers, headliners)

• Upholstery and furniture fabrics

• Industrial textiles (filters, protective covers)

3. Common Applications in the Fabric Industry

• Seamless Apparel Construction: Replacing stitches with PUR bonding lines for comfort and aesthetics

• Mattress Manufacturing: Bonding fabric to foam and non-wovens

• Car Interior Assembly: Securing textiles to plastic, foam, or rubber

• Bag and Shoe Production: Attaching fabric lining, webbing, or trim

Kelan’s PUR glue sticks are compatible with both manual glue guns and automated hot melt applicators, making them suitable for large and small-scale production.

4. Technical Performance & Testing Results We subject all Kelan adhesives to rigorous performance testing. Our PUR glue sticks for fabrics show:

• Peel strength: Up to 5 N/mm (on polyester-cotton)

• Temperature resistance: -30°C to 120°C

• Wash cycles durability: >50 industrial washes

• Shear strength: Maintains integrity under fabric tension and stress

All adhesives are RoHS, REACH, and ISO compliant.

5. How to Use PUR Glue Sticks on Fabric: Step-by-Step Guide

1. Preheat the glue gun to 120-140°C (follow specific equipment instructions).

2. Insert PUR stick and allow it to melt fully.

3. Apply glue to one fabric surface. A thin, even layer is enough.

4. Assemble parts within 30-60 seconds (open time).

5. Press firmly to ensure bonding. No need for extended clamping.

6. Allow 24-48h for full curing through ambient moisture.

Tips:

• Ensure surfaces are dry and dust-free

• For delicate fabrics, test first to avoid visible soak-through

• Store PUR sticks in airtight packaging to avoid premature curing

6. Case Studies: Real-World Success Case 1: Sportswear Manufacturer

• Problem: Seams on polyester garments caused chafing and discomfort.

• Solution: Kelan’s PUR-TS101 glue sticks used for seamless hem bonding.

• Outcome: 35% production efficiency gain and enhanced customer satisfaction.

Case 2: Automotive Textile Supplier

• Problem: Foam-backed fabric used in headliners was delaminating during heat exposure.

• Solution: PUR-FX300 glue stick provided heat stability and foam compatibility.

• Outcome: Zero delamination under thermal cycling tests.

7. Environmental Responsibility & Certifications Kelan is committed to green chemistry:

• PUR glue sticks contain no solvents and low VOCs

• Compliant with OEKO-TEX®, RoHS, and REACH

• Manufactured in ISO 9001 & 14001 facilities

Using Kelan adhesives helps textile manufacturers meet global sustainability and compliance standards.

8. Why Choose Kelan PUR Glue Sticks for Fabric Applications?

• Custom Formulations: Tailored viscosity, open time, and flexibility

• Consistent Quality: Every batch tested and certified

• Technical Support: Application consulting, samples, and equipment recommendations

• Global Experience: Serving clients in 30+ countries across apparel, automotive, and upholstery sectors

Conclusion: Fabric Bonding Made Simple, Strong, and Smart With polyurethane hot melt glue sticks, fabric bonding reaches new levels of performance and design freedom. Whether you’re looking to eliminate stitching, improve product durability, or streamline your production process, Kelan’s PUR adhesives are your trusted solution.