Die cutting protective film process

1, look at the positive and negative: the positive and negative here is not necessarily to set a positive or negative product, we are here to distinguish the customer when using the product, the first use is which side? Our products are designed according to the design drawings provided by customers to design the production process sequence, which is the first thing to understand. Usually customers need to first use the rubber surface is covered with lighter release paper, so that customers can easily access. Encountered in the double-sided adhesive products have ears or positioning control, the idea of "positive and negative" would be easy to confusion, simple to explained that the so-called positive is a complete finished product before you the face you see, can clearly see the shape of the products of this surface is positive, but can't see another side of what we call reverse or plastic surface. The reverse side of the product with ears is the face that the customer wants to use first, it is the face that flushes out. And customers with positioning holes are used to pull the lighter release paper from the front to stick objects. At this time, the front of our products is rubber surface, which is also called the reverse. In short, we should determine which surface the customer uses first according to the information transferred on the customer's drawings, and the subsequent design work is good to carry out.

2, the product has the identification of glue area: this step is to distinguish the characteristics of each area of the product, to determine where our products to remove or not remove, where half broken removal. The full break area is usually removed, but there are also for the convenience of the customer operation without taking out the waste, play a supporting role, half remove the waste. The release paper left can protect the customer's product or keep it clean. If not, in line with the convenience of the process to save labor, can be changed to completely break after communication with the customer.

3. Size limit: The size limit here refers to the size that cannot be compensated by technology or has great difficulty resulting in excessive loss of capacity when we encounter such size in production. Such as two round hole below 1.5mm, within 1mm frame distance this size knife die to have a high precision to complete, small round hole punching type is easy to plug into the product waste resulting in scrap spacing is very small pad knife foam is easy to crush and become inelastic, resulting in product deformation, displacement, or overflow, easy to fall off and other bad scrap. At present, due to technical problems, it is not possible to complete the production of round hole die within 1mm, so the distance between internal and external frames is required to be at least 0.8mm to open high and low knives, which affects the accuracy of its products. But less than this value must be inside and outside the frame jump production, but can ensure production, the minimum jump production we can achieve about 0.4mm, tolerance plus or minus 0.05-0-1mm.

4. The addition and location of ears: Generally speaking, whether to add ears or where to add them is to be specified by customers. If we have to add our own, according to the principle of ease of use we say that the ear is added to the upper right side of the product area. Small products can be added in the middle position. In order to facilitate production, ears should be added to the top of the sideline, if the line of the ear is straight, the direction should be straight rather than oblique, too small is not conducive to operation, too big waste of material. Ears are non-glue, small ears can affect the whole process design of products, especially our company uses differential technology to deal with the waste glue of ears, which can save a lot of manual work.