Plastic Injection Molding | China Plastic Injection Molding Companies With Tooling And Injection Moulding Die Makers

10 Apr

Introduce the test procedure of injection mould processing

In order to reduce the waste of time in mass production, it is necessary to adjust and control the processing conditions in time, find out the suitable temperature and pressure conditions, and formulate a standard test procedure for injection mould processing, which can be used to establish daily working methods.

Check whether the plastic material in the barrel is correct or not, and whether it is baked according to the regulations.

The cleaning of material pipes should be careful so as […]

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01 Apr

Common failure of injection mold

1.1 Mold reset plate is not reset
After the mold is opened, the mold reset plate is not reset. The causes are: reset oil cylinder oil leakage, resulting in uneven force when the mold is reset. The mold reset is unbalanced.
The reset rod of the mold is strained, the cooperation between the reset rod and the guide sleeve is tightened, and the reset plate is not topped.
Solution: Check if the oil seal of the mold reset cylinder is worn out. If […]

29 Mar

Analysis of the Reasons for the Defects in the Processing of Plastic Parts

The reasons for the shortcomings in the processing of plastic parts are as follows:

Injection material. Material has impurities or supplies from different suppliers, different batches from the same manufacturer, and different batches of material processing technology is different.

Injection Moulding Machine. Check the function of each part of the injection molding machine is normal, and consider the influence of temperature, pressure, time and other reasons, control and adjust the injection molding machine.

Mold. Mould device should be appropriate, temperature should be […]

27 Mar

PMMA Plastic Injection Molding Process

PMMA, i.e. polymethyl methacrylate, also known as acrylic or organic glass, is a transparent thermoplastic with a relative density of 1.19, which is higher than that of water. With a high surface glossiness, the PMMA products are characterized by strength, rigidity and toughness.
The process features of PMMA: due to the high viscosity, PMMA has a poor fluidity. Therefore, a high material temperature and a high injection pressure must be applied during the injection molding process, among which the influence […]

25 Mar

Reasons for the Rising Price of Injection Molding Service

For the injection processing industry, the reasons for the rising cost of injection molding are as follows:

Increased labor costs

Although technicians’wages are higher than the basic wages, the wages of employees will rise after each increase. In addition, the difficulty of recruitment also forces the adjustment of salary structure, and the rising labor cost has become the basic phenomenon of injection molding industry.

Rising Prices of Raw Materials

Oil price fluctuation and raw material price fluctuation caused by plastic production problems also […]

20 Mar

Discoloration issue in plastic injection molding

Discoloration means the surface color of a molded part is not consistent with the required color. Discoloration may be caused by a variety of reasons, which may cover the several aspects of injection molding machine, mold, process and raw materials, etc.
(1) Injection Molding Machine
① Equipment is not clean and needs to be cleansed. Dusts or powders are deposited in the barrel, which contaminates and discolors the materials;
② Temperature control failure caused by malfunction of thermal couple, temperature controller or […]

18 Mar

What are the requirements for wall thickness of plastic parts

The wall thickness of plastic parts has a great influence on the quality. When the wall thickness is too small and the flow resistance is large, it is difficult for large and complex plastic parts to fill the cavity. The dimension of the processing wall thickness of plastic parts should meet the following requirements:

It has enough strength and stiffness.

It can withstand the impact and vibration of demoulding mechanism when demoulding.

Can withstand the fastening force when assembling.

The wall thickness value […]

15 Mar

How to get injection mold quotation from mold maker?

How to get injection mold quotation from mold maker?
Although there are countless creative people with great creativity in this world, sometimes they just do not have the necessary knowledge to turn the creative ideas into reality.
If a project involves parts made of the plastic material, it might be appropriate to adopt the plastic injection molding process. Injection molding, the technique of choice for a large number of entrepreneurs and OEMs, is well known for its capability to turn out high volumes […]

09 Mar

The injection molding manufacturing process

The injection molding process is usually comprised of 6 steps:

The clamping: An injection machine contains 3 parts – the injection mold, the clamp and the injection unit, among which, the clamping unit keeps the mold at a certain pressure, so as to ensure the consistency of the outputs.

A mold is usually made up of 2 parts.

The injection unit: It refers to the part where the plastic pellets are fed into the hopper located at the top end of the […]

01 Mar

Prospects of Plastic Mould Industry

Plastic mould industry is a traditional industry in China. It started earlier and developed more and more mature. At the same time, it has also grown a number of potential small and medium-sized enterprises. The future of plastic mould industry is considerable, but the technology level is still far from that of foreign countries.

Plastic mold is a tool for plastic processing industry and plastic forming machine, which gives plastic products complete configuration and precise size. Because there are many […]