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Plastic profile extrusion mold not only give full consideration to the product cross-section, mold plastic flow of non-Newtonian characteristics and the model billet from the mold expansion, traction deformation and cooling contraction, extrusion unit performance, mold plastic formulations and other integrated role of the problem, should also focus on considering the feasibility of mold processing technology and process costs. Mold designers to design the mold drop in addition to meet customer requirements, should also maximize the cost reduction, so that the benefits of a single piece better. Many ways to reduce process costs, such as material selection, cavity size design, structural design, as well as structural standardization, serialization, general aspects.

(1) selection of materials

Plastic profile extrusion mold materials should meet the corrosion, heat, wear, but also should have good processing, thermal conductivity, surface hardness, adequate strength and rigidity. As plastic profile products in the extrusion process is easy to release chemical corrosive substances, so you can choose low-priced easy-to-cut steel, the surface of the anticorrosion and wear-resistant treatment, you can also directly choose 1cr13, 2cr13, 3cr13, 9cr18 stainless steel materials. The former low material costs, mold surface roughness can be achieved, but the design, processing technology, quality control and management level is very high, so most companies tend to choose the latter. Mold companies should actively combine with related high-tech, improve the design, processing, quality control and management level, reduce the rate of defective products and scrap rate, reduce the number of trial mold, mold repair, which can greatly reduce process costs and mold production costs, operating and management costs.

(2) structural design aspects

Plastic profile extrusion mold structure design first to meet the profile performance requirements and adapt to the characteristics of the material rheology as well as the strength of the conditions allowed, the structure should be as simple as possible, the external dimensions should be as small as possible, should try to use standardized parts, general-purpose parts, so that you can achieve the purpose of reducing costs.

The former through the double key mounted on the manifold, and the latter single key mounted on the mouth of the mold 3, pull out of the profile, although they are ideal, to meet customer requirements, only a cavity, through the key and core connection, the structure is not only simplified, reduce the processing procedures, save a lot of man-hours, but also the stability of the core is better than the former.

In short, the plastic profile extrusion mold industry only continue to develop new products, open up the market, accelerate the process of new product development, optimize the design, reduce process costs, in order to face the increasingly fierce competition in the market as well as China's accession to the WTO challenges!