Analysis on the principle of thick sheet plastic mold

First of all, let me talk about what blister is. The following are all written according to my own understanding and have nothing to do with professional terms. I believe that everyone has played balloon blowing, stretch the balloon with both hands, put it on your mouth, suck it hard, tie it up, and you will get a bulging balloon (product). Thick sheet blister is a roll-shaped flat sheet baked at high temperature, adsorbed on the surface of the mold with vacuum, which is the origin of the word "suction", and then cooled to shape.

In practice, the plastic sheet softened at high temperature will obtain products of different shapes according to the shape of the mold; since the plastic sheet still has good elasticity after cooling and solidifying into a product, generally the inverted buckle can be directly released from the mold without the need for further mold separation.

Vacuum blister has a wide range of uses, and everyone will come into contact with it in daily life, but seldom pay attention to it, such as the lined plastic box for eating biscuits, the transparent cover of supermarket toothbrushes, etc., so you can imagine that blister is used to hold something. It is a packaging material, such as the function of a carton, of course, nothing is absolute, you can also make it into a decoration or a toy accessory, but this is rare.

Since the products used for packaging vary in shape, size and weight, the thickness of the material used and the shape of the mold are naturally correspondingly different. Let's answer the questions about the thick sheet blister mold. Molds are distinguished according to different customer requirements and practicability, such as plaster mold, copper mold, aluminum mold, plastic mold, etc.

The above molds must have small vacuum holes in appropriate positions to absorb the film during molding. The plaster mold is the most basic and can be called the mother of all molds, because other molds are first covered with plaster molds.

The difference is that the surface of the plaster mold is not smooth enough and is easily broken, so there are many copper molds used in the thick sheet blister industry, which are durable and cost-effective. Aluminum molds are used for products with strict requirements. The size and finish are better than copper molds, but the price is slightly more expensive. The plastic mold is generally used to solve the water pattern in the physical position and form a smooth molding surface.

To sum up, the mold is only the basis for forming various shapes of vacuum forming. The purpose of adding buckles and inversions is to strengthen the tightness of product loading or to change the type of blister structure, such as half-folded products. The above things are relatively boring to read to friends who may not have contact with blister. This is the case with the thick sheet blister industry, not a high-tech industry, but it requires contact to understand.

If you have any questions about vacuum blister, thick sheet blister, and PC blister processing, you can call our customer service line 152-2176-9682 (Mr. Yuan), and we will arrange professional technicians to answer you.