Over molded plastic parts Manufacturers

Plastic molds require various pressures during injection molding to complete injection molding, and finally form finished plastic parts. Today we will focus on introducing various pressures encountered in the process of plastic parts processing.

Product design: Plastic product processing holds rounding and increases the demolding slope. Mold: 1. Mold surface polishing. 2. Pull the white status growth thimble. 3. Confirm that the parting surface has no inverted buckles and air spurs, and repair it with oil stone. Injection molding process: 1. Under the premise of thorough filling of the clad product, accept the lowest possible injection pressure. 2. Confirm that there is no problem with the size and appearance of the product, reduce the holding pressure, holding time or cancel the holding pressure. 3. Adjust mold temperature and cooling time. When we are in the injection molding of plastic finished products, we usually encounter the idea of product whitening, we can first analyze the whitening from the methods of man, machine, material, method and ring, and classify and summarize all the components that affect the product; Re-examine the process opened up by the product.

Polyimide, also known as PI, is an aromatic heterocyclic polymer with acyl imine groups in its main chain. Its general formula is as follows: Ar and Ar in the formula represent aryl groups.

Vespel sp1 is DuPont's pure grade PI profile product, which has excellent comprehensive mechanical properties, high temperature resistance and wear resistance, and is often used in extremely complex working conditions, such as aerospace, semiconductor, etc.

Duratron D7000 PI (color: natural/maroon) has a temperature resistance between Duratron PAI and Duratron PBI. It is of particular value at temperatures beyond what the Duratron PAI can handle and when the Duratron PBI is too expensive. Several Duratron PI products are available for structural and wear-prone applications, and are available in a wide range of sizes - especially for thicker plates, larger decks and thick-walled pipes. In addition to being more resistant to high temperatures, Duratron D7000 PI has very good mechanical properties.

The burrs, also known as flying edge, overflow, overflow, etc., mostly occurs in the parting position of the mold, such as: the parting surface of the mold, the sliding part of the slider, the cracks of the insert, the pores of the ejector rod, etc. If the overflow is not solved in time, it will be further expanded, so as to form part of the embossed mold collapse, causing consistent obstruction. Cracks in inserts and top bar pores also cause the product to get stuck on the mold, affecting the release.