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Plastic Injection Compression Molding Or Moulding Process Step By Step From PTJ Mould

Posted by: Mu Ju 2021-11-07 Comments Off on Plastic Injection Compression Molding Or Moulding Process Step By Step From PTJ Mould

PTJMould Industrial Company Limited is a professional china plastic injection molding company for 3D Printing Rapid Prototyping Service,precision Cnc milling service and custom cnc machining services,custom plastic injection molding or moulding company with mould and dies development and manufacturing.

Today we will discuss plastic injection compression molding or moulding process step by step from jason mould.

Injection molding is a technique used in shaping different materials such as plastics, metals, glass, and sand. Just like everything else, there are different types of molding techniques with the main types being:


A thermoplastic is usually the raw material used in the process and mold is made of metal. To begin the molding process, the raw material is heated in a heating chamber and then injected into the mould.

It’s then allowed to stay in the mold chamber for sometime where it solidifies. When it solidifies it usually leaves parting lines and sprue lines. The parting lines are left on the final object where the parts of the object meet.

Sprue is the area where the raw material was injected in the mold. In most cases the raw material solidifies in the sprue hole and has to be broken off and as a result leaves marks on the final product.


This process is used in creating hollow items that are made of plastic. The molding process begins with the pouring of the heated stock into the mold. The mold is then heated in an oven and rotated slowly in order to spread the stock evenly.

After doing this the mold is cooled and when it solidifies it’s removed. This technique is great as it makes it possible for one to create products of different thicknesses and designs.


The method is used in producing items in large scale. In most cases the items produced are of the same cross-sectional area. The stock material is usually heated and passed through a die.

To make it straight, the extrusion is stretched. To get the desired crystal structure, the extruded material is treated with heat at room temperature. The most common materials used here are: metal, ceramic, food, and plastic.


The raw materials that are usually used are: fiberglass, thermoplastics, and thermosetting resins. Just like in the other processes the raw material is heated and poured into the heated mold cavity.

Once full, the cavity is closed and pressure is applied on it in order for the heated material to form shape. This process not only aids in molding large and intricate objects, but it’s also inexpensive.


These are the main types of injection molding techniques that are available in the market. Different techniques produce different types of products and you should take it upon yourself to research and identify the best places to buy high quality products.

If you want to know more about china plastic injection molding company,you can pay a visit to https://www.plastics-moulding.com

About PTJMould Industrial Company Limited

PTJmould is a manufacturer of plastic molds- injection mold, die casting moulds, plastic blow molding, rotational molding, medical plastic injection molding, two shot plastic injection molding, insert molding, overmolding, metal injection molding, micro injection molding, powder injection molding, ceramic injection molding, liquid injection molding, husky injection molding, household mold, casting mold, die mold tool, custom molds, china moulds, rapid prototyping tooling, plastic prototyping tooling, punch press tooling, die and tooling for mobile/ cell phone parts, automotive parts, vacuum cleaners, rechargeable tools, telephones, copiers, computers, multimedia speakers, and many other electronic products and household appliances. And also a plastic product manufacturer- plastic parts, plastic water tank, plastic balls, plastic containers, plastic buckle, plastic anchor, plastic hanger, plastic spoon, plastic pipe fitting, plastic tumble, plastic tableware, plastic cups, plastic bottles, plastic tray, plastic cosmetic container, plastic case, plastic food container, plastic chairs, plastic caps, plastic cap closure, plastic tubes, plastic water pipes, plastic knobs, plastic tubing, plastic utility boxes, plastic racks and so on.

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