1. Great influence on the smoothness of PE film In the solvent-free compounding process, for a compound structure with an inner layer of PE film (especially PE film thickness <45µm), when the curing temperature exceeds 40 ° C, the problem of a significantly increased friction coefficient is likely to occur. This is mainly because: in the process of PE film blowing, under the same amount of slip agent, the thinner the PE film, the less the content of slip agent per unit area; in the solvent-free compound link, the higher the curing temperature The more intense the molecular movement of the slip agent, it will react with it after migrating to the solvent-free adhesive layer, resulting in more consumption of slip agent, resulting in an increase in the friction coefficient of the final composite product. In response to this problem, the most common solution is to reduce the amount of gluing while lowering the curing temperature while ensuring compound quality. 2. Insufficient peel strength of aluminized materials The most likely problem in the compounding process of aluminized materials (especially VMPET) is the transfer of the aluminized layer, resulting in insufficient peel strength of the final composite material, which is particularly obvious in the solvent-free composite process. There are many reasons for the transfer of the aluminized layer, including aluminized materials, composite processes, and the characteristics of the solventless adhesive itself. From the perspective of solvent-free adhesives alone, it is possible to adjust the adhesive formulation to minimize the chance of transfer of the aluminum coating. 3. There is a dissolution phenomenon with some inks In the solventless compounding process, the phenomenon of adhesive dissolving ink sometimes occurs, especially some inks made of dyes. Although this problem can be alleviated by controlling the solvent-free compound process, it also requires communication between the solvent-free adhesive manufacturer and the ink supplier to provide an effective research solution. Coats And Jackets,Solid Color Hooded Sweatshirts,Pocket Drawstring Clothes Hoodies,Casual Long Sleeve Cable Sweater,Hooded Open Front Long Cardigans Hun Yuan Ya Lian Wan Jia Dian Zi Shang Wu You Xian Ze Ren Gong Si , https://www.ylwjastragalus.com