Plastic Injection Molding

How to Produce Plastic Products by Injection Mold

Since mankind entered the industrial society, the production of all kinds of products has got rid of manual work. Automated machine production has been popularized in all walks of life, and the production of plastic products is no exception. Nowadays, plastic products are processed by injection molds with injection molding machines, such as those common in our daily life. All kinds of household appliances and digital products are processed by injection molding. How is a complete plastic product poruduced in the […]

How to Identify The Quality of Injection Parts

From three points, we can see the quality of injection parts.

First, look at the appearance
 

Seewhetherthe injection parts are complete and whether they are deformed or not;

 

Whether the injection parts are uniform in color, whether there is obvious color difference, and whether the color is bright and translucent.

 
Second, touch the product
 

Touch the the surface of the injection part to see whether smooth, and whether there are burrs around the handle;

 

Whether theinjection parts have been naturally aged, the aging is reflected in […]

Four Key Points Affecting the Quality of Injection Mold

1) plastic materials
 
The complexity of plastic material properties determines the complexity of injection moulding process. The performance of plastic materials varies greatly with varieties, brands, manufacturers and even batches. Different performance parameters may lead to completely different forming results.
 
2) injection temperature
 
The melt flows into the cooling cavity and loses heat due to heat conduction. At the same time, the heat generated by shearing may be more or less than the heat dissipated by heat conduction, mainly depending on the […]

Surface Treatment Technology for Plastic Injection Molded Product

Printing

 
There are several ways to print or design the surface of plastic products.
 
1. Screen printing
 
This method is the most common and widely used one; it is generally suitable for flat or radian printing.
 

Surface printing

 
Principle of surface printing
 
Surface printing is to put the ink into the gravure with words or patterns carved, then copy the words or patterns onto the surface, then use the surface to transfer the words or patterns to the surface of the product, and finally solidify […]

Analysis of Injection Mold for Automotive

In the development of automotive industry, the demand for plastic parts is increasing day by day, because the application of automotive construction to plastic parts is very high, that is to say, the quality of plastic parts has a huge role in promoting the development and construction of the automotive industry, which requires the production of plastic parts in need of quality assurance, and determines the quality of plastic parts. It is the mold. There are not a few cases that the […]

Role of Slider in Process of Injection Molding

In the process of injection molding, processing holes play different roles on different sliders. In the front part of the product, the clamping line between the slider and the cavity is on the parting line, and the product is formed by the big slider around the product. Four clamping lines are formed at the interface between the sliders on the appearance surface of the product.

In order to ensure the smooth line between some sliders and the cavity and between the […]

Why Injection Mold Need to Be Tested?

Most of the defects of injection molded parts are caused by the plasticization and injection stage of injection molded parts, but sometimes unreasonable design. The influencing factors include the type of injection inlet, the number of mold cavities, position and size, the design of cold/hot runner system and the structure of the product itself. Therefore, in order to avoid the product defects caused by mold design, we need to analyze the injection mold during the production.
mold making
After getting the […]

How to Adjust Injection Molding Process Parameters

The measurement and control of temperature is very important in injection molding. Although these measurements are relatively simple, most injection moulding machines do not have sufficient temperature pick-up points or circuits. In most injection molding machines, the temperature is induced by thermocouples. A thermocouple is basically made up of two ends of different wires. If one end is hot than the other, it will produce a tiny telegram; the more heated it is, the stronger the signal.
 
Temperature control
 
Thermocouples are […]

Common Problems in Transparent Plastic Injection Molding Process

Transparent plastics, because of their high transmittance, are bound to require strict surface quality of plastic products, and can not have any defects such as markings, pores, whitening, fog halo, black spots, discoloration, poor gloss, etc. Therefore, in the entire injection molding process, the design of raw materials, equipment, molds, and even products should be paid great attention to and put forward strict. To special requirements. Secondly, transparent plastics are mostly of high melting point and poor fluidity, so […]

Brief Introduction of Injection Molding Process

The injection molding process includes preparation before molding, injection process and post-processing of plastic parts.
 
Preparations before molding include the inspection of raw material appearance and the determination of technological properties, preheating and drying, cleaning of injection machine barrel, preheating of inserts and selection of release agent when demoulding is difficult. Sometimes it is necessary to preheat the mold.
 
During molding, powdered or granular materials are fed from the hopper into the high-temperature barrel for melting and plasticizing to become viscous […]