Classification of plastic products:

The polymer is composed of many small, simple molecules (monomer), which are combined by covalent bonds. There are many kinds of polymers, which can be classified into two types of plastic products:

A, thermosetting plastic (Thermoset plastics) : refers to after heating, can make the molecular structure combined with reticulate type, but combined with reticulate polymer, even heating won't soften again, show the so-called [a] reversible change, molecular structural change is caused by (chemical).

Second, thermoplastics (Thermo plastics) : refers to the heated can melt, can flow to mold after cooling molding, again after heating and melting plastic, can use of heating and cooling, make its produce [] reversible change please - solid (liquid), is the so-called physical change.

Plastic products according to the main application range points are general plastics such as PE/PP/PVC/PS, engineering plastics such as ABS/POM/PC/PA of several normal. There are some special plastic, such as resistance to high temperature and high humidity and corrosion resistance and other modification of plastics for special use.

Use and color processing of plastic products

1. The most recycled plastic raw materials, but due to the double plastic (material floolwing) than the general material brittle, so only can be used mixed with new material (raw material), the largest proportion is not more than 25% is more appropriate, at the request of customer standards for the principle. The various types of plastic material for the melting point is different, injection pressure of different, in production must not be confused.

2. Because want to cooperate with color plastic products, plastic raw materials can be divided into: so smoke aggregate, toner, color material, and recently appeared to add liquid coloring in the plastic raw materials. Take grain of raw material is mixed pigment into the raw material, every grain of the plastic material have been shaded, so to form stable product color evenly. Kind of material is the color pigments and color or toner mixed raw material use, low cost, and don't need to store large amounts of non-ferrous materials. But the color is not stable, more difficult to control in the production of unity.