Low Temperature TPU Hot Melt Adhesive Film

This shoemaking‑grade low‑temperature TPU hot‑melt adhesive film is formulated with low‑melting‑point eco‑friendly TPU raw material, featuring melting temperature ranging from 80℃ to 110℃. Lower hot‑press processing temperature cuts workshop energy consumption and production costs. The low‑temperature process protects heat‑sensitive uppers such as flyknit, mesh fabric, ultra‑thin PU and microfiber, avoiding burning, shrinkage and discoloration defects. After hot‑press curing, it forms a high‑strength permanent bonding layer with excellent adhesion for genuine leather, microfiber, flyknit, engineering mesh, PU synthetic leather and other footwear materials. Bonded joints remain free of debonding, blistering, delamination and cracking under long‑term walking, repeated flexing and damp conditions for durable shoe construction. Sufficient shaping rigidity after cooling makes it ideal for lamination of toe‑puff and heel counter inserts, firmly locking 3D contour of toe and heel to resist collapse and keep elegant shoe silhouette after long‑time wear.

The film is soft and highly elastic with outstanding flex‑rebound performance. Bonded shoe parts stay free of hardening, whitening, cracking and delamination after tens of thousands of flex cycles, balancing rigid shaping support and comfortable wearing experience. Each roll delivers consistent thickness without bubbles, particles or uneven coating. Uniform hot‑press shrinkage enables perfect compatibility with automatic die‑cutters and continuous hot‑press production lines for non‑stop mass manufacturing. Its transparent matte surface preserves original color and fine texture of uppers, well‑suited for seamless lamination of light‑colored and translucent fashion shoes. Made of low‑odor eco‑friendly TPU, it releases no irritating volatile substances and complies with international footwear safety standards for export‑oriented shoe orders. It shows excellent die‑cutting performance with clean neat cut edges, resisting stretching and deformation during cutting to reduce reject rate and improve workshop productivity.

Widely supplied to sneaker factories, casual shoe manufacturers, safety shoe workshops and professional footwear material distributors, this low‑temperature TPU hot‑melt film serves two major applications. First, lamination for toe‑puff and heel‑counter shaping: the film is hot‑pressed between inner substrates of toe and heel to build rigid reinforcing layers and maintain 3D shoe profile against long‑term collapse. Second, seamless upper fabric lamination: replacing traditional solvent‑based liquid glue, it bonds flyknit mesh, engineering mesh, microfiber and PU leather shoe pieces. Hot‑pressed joints are flat and wrinkle‑free with glue‑free clean workshop and simplified post‑processing. Follow standardized processing: unroll and lay flat the whole roll before cutting to release internal winding tension and prevent dimensional deformation of cut pieces.

Before mass hot‑press production, adjust three core parameters including temperature, pressure and holding time according to film thickness and upper material. Conduct sample lamination test to confirm bubble‑free firm bonding before full‑scale production. Place TPU film evenly between two layers of shoe materials, keep accurate alignment without wrinkles or film offset. Apply short cooling holding time after hot‑press for full curing and complete strength development to avoid delamination caused by insufficient cooling. Seal remaining roll ends completely with waterproof PE film upon daily work completion and store rolls flat to prevent permanent creases which impair subsequent lamination.

Standard warehouse storage rules: Lay TPU film rolls flat on dedicated shelves in cool, dry and well‑ventilated warehouse with temperature kept below 30℃. Keep away from high‑heat equipment, direct sunlight, oil stains, oily solvents and corrosive chemicals to prevent premature melting, aging and adhesion performance degradation. Heavy vertical stacking on rolls is forbidden to avoid permanent crease deformation. Reseal protective film tightly after partial roll consumption to block dust contamination which may lead to poor bonding and blistering during hot‑press. Complete daily inspection and batch QC system: check roll sealing status, surface cleanliness and crease/damage condition before daily cutting operations.

Sampling inspection is implemented for every incoming batch to verify thickness uniformity, melting‑point range and peel‑off strength after hot‑press curing for strict raw‑material quality control. Proper hot‑press temperature control is required; excessive temperature will cause glue overflow and stain shoe uppers. Clean TPU trimmings from cutting can be collected and sent for professional thermoplastic recycling, lowering workshop waste and supporting low‑carbon circular shoemaking. Benefiting from low‑melting‑point energy‑saving performance, heat‑sensitive‑upper protection, permanent blister‑free bonding, anti‑collapse shaping rigidity after cooling, soft high‑rebound flex resistance, consistent roll thickness for automatic lines, transparent matte finish retaining upper original texture, low‑odor export‑grade environmental property and deformation‑resistant clean die‑cutting, this product is a premium eco‑friendly adhesive auxiliary material indispensable for toe‑puff shaping and seamless stitch‑free upper lamination of sneakers, casual shoes and safety work shoes.