Manufacturing Process and Methods for TPU Composite Fabrics
Release time:
02 Jun,2018
The production process and methods for TPU composite fabrics: There are two approaches. One is called post-lamination—first producing a TPU film and then laminating it onto the fabric using adhesive. The other is in-line lamination—applying adhesive (or no adhesive) directly to the fabric and extruding TPU onto it to form a TPU composite fabric or mesh laminate.
TPU composite fabrics are used in inflatable life jackets, diving BC jackets, liferafts, inflatable boats, inflatable tents, military self-inflating air mattresses, massage airbags, medical pressure‑sore prevention mattresses, and specialized waterproof backpacks.
Generally, factories that perform post‑lamination processing are relatively small; there are many such small operations in China. They typically purchase TPU film from external film manufacturers and handle only the adhesive application and lamination steps themselves. The post‑lamination process subjects the TPU film to elevated temperature and pressure again; if process parameters are not properly controlled, the film can be damaged, potentially resulting in tiny pinholes.
In-line lamination involves laminating a fluid TPU film onto the fabric in a single step, which prevents damage to the film, yields a smooth surface finish, and allows for various pattern designs. However, this method requires significant capital investment in equipment and advanced technical expertise.