The waterproof and moisture permeable PTFE film composite product used for garments not only has to ensure that the moisture permeability of the film is not greatly affected, but also ensures that the style of the composite material is not damaged, and the perfect combination of the two is achieved. Process, process parameters and adhesives. In addition, the composite product must also meet: the bonding area should be controlled within a certain range to ensure that the moisture permeability loss is within the permissible range; the feel, elasticity and softness are not affected; the non-polluting and non-irritating environmental protection is selected. Type of adhesive; composite product has good performance, washing, no blistering, no delamination; sufficient bonding fastness, bonding strength during and after washing should not be too fast.
According to the application of the adhesive and the compounding method, the production process of the waterproof and moisture-permeable PTFE film laminated fabric is divided into two types: dry method and wet method.
Dry process: fabric waterproofing treatment - corona discharge - round mesh adhesive - drying - PTFE film unwinding, discharge treatment - and fabric hot pressing composite - PTFE film surface treatment - gluing - composite lining - cutting Edge-winding inspection-packaging-finished products.
Wet process: fabric waterproofing treatment - corona discharge - round mesh adhesive - PTFE film unwinding, discharge treatment, film - drying hot pressing composite - PTFE film surface treatment - gluing - composite lining - trimming - Winding - inspection - packaging - finished products.
In the above process, some fabrics can also be subjected to water-repellent treatment without prior treatment, so that the glue can be directly applied without corona treatment, and the water-repellent finishing of the fabric can be carried out by using a single-sided liquid supply after the completion of the composite. In contrast, this method is more suitable for wet processes.