Bulk Hot Melt Adhesive is a thermoplastic adhesive whose core characteristic is the conversion between solid and liquid states through temperature control. At room temperature, it exists in solid form, making it easy to store and transport; When heated to 65 ℃~180 ℃, it quickly melts into a flowing liquid that can be evenly coated on the surface of the substrate. After cooling, the colloid solidifies within seconds, forming a high-strength adhesive layer. Its high efficiency, cleanliness, and low cost make it the mainstream choice for bonding lightweight materials such as paper, plastic, and wood.

1. Rapid curing and long-lasting adhesion

The hot melt adhesive using EVA (ethylene vinyl acetate copolymer) substrate can fully cure within 8-15 seconds after melting, forming a flexible and low-temperature resistant (-20 ℃ non brittle) adhesive layer, ensuring the adhesive stability of paper substrates in frequent bending (such as book flipping) or low-temperature transportation scenarios.

2. Low atomization without irritation

During the production process, strict temperature and humidity control is implemented, resulting in a volatile organic compounds (VOCs) content of less than 0.5% after the melting of rubber particles. This meets the safety standards for food grade packaging and is suitable for fields with strict environmental requirements such as children's stationery and file binding.

3. Precise temperature control operation

The recommended operating temperature range is 140-160 ℃. Within this range, the viscosity of the Bulk Hot Melt Adhesive is moderate, which can smoothly penetrate the paper fibers and avoid deformation of the paper or yellowing of the adhesive layer caused by high temperatures. It supports manual gluing and is compatible with automated production lines.

4. Wide width substrate compatibility

In addition to writing paper, it has excellent adhesion to copperplate paper, kraft paper, coated paper, and composite films, especially suitable for paper containing ink printing layers. After curing, the adhesive layer has high transparency and does not affect the visual effect of printed products.

5. Removable design

By adjusting the ratio of EVA resin and plasticizer, the "temporary bonding controllable peeling" function is achieved to meet the needs of repeated disassembly and assembly scenarios such as sample books and loose leaf binding, leaving no residual adhesive after peeling.

1. Book paperback and hardcover production line

Suitable for spine coating and ring lining bonding processes, the molten adhesive solution can quickly penetrate the paper stack, and after curing, the tensile strength of the book can reach 5N/cm or more, supporting continuous operation of high-speed saddle nail equipment.

2. Packaging of express logistics documents

For temperature sensitive materials such as thermal paper and adhesive labels, the 140 ℃ low-temperature operation mode can avoid substrate discoloration. Combined with nozzle atomization technology, it can achieve 0.2mm ultra-thin adhesive line coating and improve packaging efficiency.

3. DIY stationery and handmade products

Suitable for decorating greeting cards and hand books, the glue gun dispensing mode can accurately control the amount of glue, the flexible adhesive layer can withstand repeated opening and closing, and supports bonding of mixed materials such as fabric and paper.

4. Manufacturing of archive boxes and folders

For the composite bonding of PP plastic and paper, the hot melt adhesive layer can withstand temperature changes from -30 ℃ to 60 ℃ without falling off, meeting the long-term storage requirements of archives. It has passed SGS aging resistance testing (5-year bonding strength retention rate>85%).

5. Post printing process assistance

Used for positioning and fixing paper before local UV process, the temporary bonding property of Bulk Hot Melt Adhesive can avoid traditional double-sided adhesive residue, improve the yield of printed products, and support high-speed rotary machine online operation.