Protective membranes are so common that they are no stranger to them, mainly a material used for screen and shell protection. In addition to the protective film can be made into die-cutting processing products, but also as an auxiliary material for the production of other materials, in the production of various materials play a protective role, a very wide range of uses; the low price of the protective film has contributed to one of its widely used factors

Die-cutting processing protective film material classification is very much, more commonly used is only PE material, PET material, PVC material. PET Protective Film has a single layer, double layer, three layers, to make a specific distinction also according to the model, each model of die-cutting processing protective film features are not the same.

OneProtective film Die-cuttingProcessing requirements are very strict:

(1) Requirements in the 1000 level clean Workshop environment processing, excellent cleanliness;

(2)Requires low viscosity, after the use of adhesion, sticky focus changes small re-stripping to reduce the low pollution of adhesives;

(3)No residual adhesive, must use thick transparent PET substrate as the production of raw materials, suitable for semi-punching.

(4)In the processing process, often encounter a variety of different problems, protective film processing is no exception.

For example: double-layer PET material protective film, itself with off-type force, quality is better, glue coating is very uniform, clean rubber layer, easy die-cutting processing, stamping molding will not have much change. PE Material Protection film is mostly single-layer, die-cutting pre-processing needs and off-type paper and other auxiliary materials after processing, at the same time PE protective film scalability is relatively strong, the bonding process to avoid internal shrinkage or extension of the phenomenon, in order to reduce the protection film die-cutting processing products scrap rate, it is recommended in typesetting with small size as the direction

Second, the protective film after punching has shrinkage phenomenon

(1)After punching PE Protective film, the product has shrinkage phenomenon, in the die-cutting industry often encountered this problem, punching PE Protective film, mainly in the composite film, as long as the control of the film when the tension size, or two times to the film to flush, the size of the product will not shrink seriously.

(2)In addition to producing products, protective membranes can also be used as auxiliary materials at the time of productionMagnetic material die-cutting, And the use of a wide range of prices is also very low. Its materials are mostly PET, PE, PVC. PET Protective film is often double-layer, this self-adhesive membrane protective film, good quality, uniform coating of the adhesive layer, high cleanliness of the adhesive layer, easy to process, after punching will not have much change. The processing environment requires a high degree of cleanliness.

(3）Production protection Film One is afraid of dirt, two afraid of telescopic and are fatal. The former is caused by the production environment conditions can be improved, the latter is very much related to the material. Just like the electrostatic protective film of PVC material.Thermal material die-cutting, Its telescopic size can reach 0.4-1mm, die-cutting products pull up will find the product in one Direction shrinkage, One Direction extension, and not proportional. How to solve this headache problem, at present has to scale according to its characteristics of the knife mold size also make some adjustment and scaling.

Third, the summary die-cutting processing protection film needs the following points:

1, protection film die-cutting processing products are afraid of dirty and dust, and this is closely related to the production environment of manufacturers, to make clean and bright products need to have a dust-free workshop, at least to have a standard dust-free workshop, and even cleanliness, thousands of dust-free workshop.

2, protective film in the die-cutting molding, pull out or pulling up will appear telescopic phenomenon, but now did not find a better way to solve this problem, can only be in accordance with the characteristics of the protective film telescopic, die-cutting processing knife mold steel knife to scale.

3, the above two points summed up, after a long attempt by die-cutting master, to solve the problem of protection film die-cutting processing products shrinkage, but there is a preliminary plan: In fact, laminating is very critical, as long as the control of the tension of the film, or the use of two times laminating, and then take the punching type, so die-cutting processing