Tag - quality plastics custom molding inc

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 […]

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 […]

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 […]

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 […]

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 […]

How much does it cost to make a plastic mould?

The factors that determine the price of plastic moulds are as follows:

Expected production of plastic moulds, which determines what kind of material to use and what price to pay.


The size and shape of the product are simple and complex. This determines the structure of the plastic mould, which directly affects the cost of the plastic mould.


The requirement of size and appearance, precision and appearance, and processing cost are also different.


The requirement for the number of holes in plastic moulds […]

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 […]

Development and Implication of Plastic Mould

All kinds of tools and products we use in our daily production and life, ranging from the base of machine tools and the shell of fuselage to the shell of a embryo head screw, buttons and various household appliances, are closely related to the model. The shape of the mould determines the shape of these products, and the quality and precision of the mould also determine the quality of these products. Because of the different material, appearance, specifications and uses of various […]

Why the injection molding become so popular in manufacture

Definitely, if one of the spare parts on your machine or equipment does not function properly, you will need to order a new one for a replacement. However, if your equipment is custom-made, you will have to produce or purchase a customized spare part. But, this process will take a long time, depending on how difficult the part is manufactured and what kind of materials are used. However, if you already have a plastic injection mold which produces parts, it will be quite […]

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 […]