The processing process and processing requirements of protective film die-cutting
Jan 15, 2022
Protective film is very common, and everyone is not unfamiliar with it. It is mainly a material used for screen and shell protection. In addition to being made into die-cutting products, the protective film can also be used as an auxiliary material for the production of other materials. It plays a protective role in the production of various materials and has a wide range of uses; the low price of the protective film makes it one of the factors that are widely used. .
There are many types of protective film die-cutting materials, and the more commonly used ones are only PE material, PET material, and PVC material. There are single-layer, double-layer, and three-layer PET protective films. The specific distinction must be based on the model. Each model of die-cutting protective film has different characteristics and uses.
The protective film die-cutting process is very strict
First, it is required to be processed in a class 1000 clean workshop environment with excellent cleanliness;
Second, low viscosity is required. After being attached and used, the adhesive force changes little and then peeled off to reduce the low pollution of the adhesive;
Third, there is no residual glue, and thick transparent PET substrate must be used as the production raw material, suitable for semi-punching.
In the processing process, various problems are often encountered, and the protective film processing is no exception.
For example: a protective film made of double-layer PET material has a release force and good quality. The glue is applied very evenly and the glue layer is clean, which is convenient for die-cutting and will not change much after stamping. The protective film of PE material is mostly single-layer, and it needs to be laminated with auxiliary materials such as release paper before die-cutting processing; at the same time, the PE protective film is relatively strong, so it is necessary to avoid internal shrinkage or extension during the lamination process. Phenomenon, in order to reduce the scrap rate of protective film die-cutting products, it is recommended to use the smallest size as the labeling direction when typesetting.
