What is the Process of Plastic Injection Moulding?

The plastic injection moulding process produces large numbers of parts of high quality with great accuracy, very quickly.

Plastic material in the form of granules is melted until soft enough to be injected under pressure to fill a mould.  The result is that the shape is exactly copied.  Once the plastic moulding has cooled sufficiently to harden the mould opens releasing the part.  The whole injection moulding process then repeats.




Close Mould

CLAMPING – the moving and fixed platens of the injection moulding machine (see next section) holds the mould tool together under pressure.


Inject Molten Plastic

INJECTION the molten plastic that has been melted from pellet form in the barrel of the moulding machine (see next section) is injected under pressure into the mould.



Hold Mould Closed

DWELLING after the molten plastic has been injected into the mould pressure is applied to ensure all cavities are filled.

COOLING the plastic parts are then allowed to solidify in the mould.



Open Mould and Eject Part

OPENING the moving platen moves away from the fixed platen (see next section) separating the mould tool.

EJECTION – rods, a plate or air blast then aids ejection of the completed plastic moulding from the injection mould tool.

The length of time from closing the mould to ejecting the finished plastic moulding is the cycle.

Ways of Crate Mould Maintenance

Choosing the right documentation software may prove essential in helping crate mould makers collaborate while promoting the 

principles autonomous maintenance. The right software can help companies develop visual, step-by-step process documentation 

(procedures that include diagrams, color photos and videos), which enables shops to establish a set of standardized instructions

 for everything from crate mould cleaning and repair to safety procedures.

While incredibly important, maintenance and cleaning are also tedious and require precise attention to detail. No one really gets 

excited about doing them. So, in a busy shop where customers demand quick turnarounds, preventative maintenance often gets 

pushed to the back burner. After all, its a time-consuming job. It takes a careful, patient and knowledgeable hand to 

complete the process correctly.

crate mould

The right software won’t just aid in the documentation, it can also be the foundation of a shop-wide communication system

a way to distribute expertise from master to journeyman. Even when experts are tied up on other tasks, their 

insights can still be referenced by less-experienced workers. You dont need to look over someones shoulder 

to explain exactly the right way to do a job. The system should handle that for you.

Household Mould Industry Status

From the layout of the Chinese household mould industry, plastic household mould manufacturing almotst concentrated in Guangdong, Zhejiang.Currently, the domestic household appliace mould accounted for more than 80% market share, fully self-sufficient, and the domestic household mould manufacturers is fully capable for making large plastic LCD TV mold, stamping die, molding technology backplane higher mold production is also fully capable.

household mould

Can be expected, large, sophisticated, well-designed (mainly for thin-walled products) will be household injection mould business concerns.Rapid response, quick delivery accessories for household electrical appliance enterprises to seize market share is to rely on advanced molding technology to ensure that, Haier, for example, Haier purchase molds about 6000 a year, worth over $ 500 million as Haier mold with Haier is the integration of product design and development, which is Haier’s products to market quickly, saving valuable time.

household mould

household mould

In 2010, China’s rapid economic growth and the impact of global economic recovery, China’s mold industry in the post-crisis period to obtain a better recovery of growth, the country die of about 112 billion yuan of total sales, up 14% or more.According to customs statistics, in 2010 mold reached $ 4.258 billion total import and export.Among them, the mold imported $ 2.196 billion, an increase of 19.15%, mold export $ 2.062 billion, an increase of 4.99%.China mold exporter, in addition to the traditional United States, Japan and Europe and Southeast Asia, Brazil, India, Russia, Australia and other emerging market development have been achieved.At present, China’s mold exports reached 40 countries and regions.According to customs statistics, exports of major mold from Guangdong, Zhejiang and Jiangsu, followed by Shanghai, Shandong, Fujian, Tianjin, Liaoning, Beijing and Jilin, we can see the Pearl River Delta, Yangtze River Delta, Beijing-Tianjin region is still mold developed regions, but also a concentration of home appliance mold.2010 China’s exports stamping $ 503 million, $ 1.514 billion rubber mold, other moulds $ 178 million, shows the advantages of China’s mold industry is still mainly in the rubber mold, but also reflects the household mould has a strong competitive the market more active.During this period, export growth rate of mould growth rate higher than the industry as a whole, and for the first time the annual trade surplus of good results.

Six basic requirements for qualified plastic mold

plastic molds can be divided into compression molding mold, injection mold, extrusion mold, blow mold hollow products, thermoforming molds depend on press molding method. In addition to the above listed types of plastic mold, there are otherforms of plastic mold. Such as the slush mold, reaction injection mold, foam mold, low pressure fiberglass reinforced plastic molding mold. But no matter what a plastic mold of acceptance should meet the following six basic requirements:

1. The product forming process, the mold structure and production process analysis. Plastic mold tooling service lifeshould be at least 30 million times.

2. The mold must be designed to complete the structure and processing parts, and assembly requirements and the proposedinjection molding process requirements.

3. No plastic parts appearance quality defects (such asshrinkage, etc.) or die structure (such as sub-surface setting, gatesetting, tool life can not be guaranteed and so on).

4. The appearance of mold: Mold must ensure that the appearance of rust-free, no hit marks, no defects such as moduleground defects.

5. Mold Transportation: Transportation must be installed on the mold clamping piece, packaging solid, rust-proof.

6. Mold information: delivery, while in the mold, the mold must provide a set of wearing parts and maintenance of reference materials

Preparation Work Before Choosing the Injection Molding Machine

In general, customers in the injection molding industry for many years tended to have the ability to judge and select a suitable injection molding machines to produce products. However, in some cases, customers may need the assist of manufacturers specifications in order to decide which  injection molding machine is much suitable, and even some customers may only have product’s sample  or idea, and then ask which  machine can produce, or what kind of model comparison suitable. In addition, with some special products may require special devices such as accumulators, closed-loop, injection compression, can produce more efficiently. Thus, how to choose a suitable injection molding machine to produce, is an extremely important issue. The following information is provided to the reference.

Usually affect the choice of injection molding machine  important factors includes, molds, products, plastics, molding requirements, therefore, must be collected before making a choice or have the following information:
◆ Die size (width, height, thickness), weight and special design;
◆  Type and quantity of plastic would be used (single or multiple plastic raw materials);
◆ Plastic part Dimensions (length, width, height, thickness), weight, etc.;
◆ shape requirements, such as quality conditions, the injection speed.

toy mould


The composition of mold price

The composition of mold price

Mold price constituted mainly by the following aspects ;

Notes: Each factory may have their own different price , here only for reference






Raw material costs

10 %—–30%

Costs on real material


Standard Parts

10 %—–30%


Processing ten profit

30 %—–50%



10 %—–15%



3 %——– 5%


Packing and shipping




3 %



5 %——– 8%


Value added Tax


Zhejiang Made “Taizhou” As Plastic Parts Brand

Taizhou, known as “plastic Kingdom”, with more than ten thousand plastic products manufacturer. In recent years, plastic commodities in the national market share of up to 60%. However, the plastic industry in Taizhou have been expanding their strength at the same time, the industry in some deep-seated problem came to light.Because plastic products are relatively low threshold of traditional industries, as raw material prices, foreign trade policy and other external factors, the production cost of plastic products increased year by year, enterprises have the production value and profits decline.

Facing all kinds of problems, the transformation and upgrading has been placed in front of all plastic products companies. The “technical” word has become a large company to seek a breakthrough in the key. As the plastic products industry’s leading enterprises, shuanghui also  depict a broader development prospects to Taizhou Plastic Industry.

Technical support, services local economic.

Yuntian Mould can provide you the best Plastic Table Mould

Yuntian Mould can provide you the best Plastic Table Mould

Huangyan Yuntian Mould & Plastic Co., Ltd is professional in the design manufacturing plastic moulds including auto motor parts moulds, electrical appliances moulds, commodity moulds, double-color moulds, medical appliance moulds, plastic table mould . Equipped with advanced machines like Italy ‘FIDIA’ Milling machine and having experienced technology team and applying an overall CAS/CAD/CAE/CAM/CAQ system in designing and manufacturing, we have enjoyed good reputation and have established good cooperation with companies like Volkswagan, Mazda, Sony. And we’ve oversea customers from Canada, Brazil, Israel, Middle East, Singapore, etc. ?Who makes dream into reality??Making the right choice is critical to your business success. The right choice is Yuntian Mould & Plastic? Deliver Confidence & Satisfaction through Quality Products!


plastic table mould
plastic table mould

How is the plastic Table made?

Injection molding is a method of plastic table making, a metal mold is used, and solid plastic polymers are heated at a fixed rate and temperature. They’re then poured into the plastic table mold and cooled. A certain amount of precision must be used with this type of molding process because if the plastic is poured too slowly, it will dry too soon. If it is poured too quickly, the result will not be a uniform arrangement of plastic. If done properly, the result is a plastic table with no seams, molded all in one piece.

Now I honestly introduce you Our Plastic Table mould.


Detailed Information:

Product Name: Plastic Table Mould

Maker/Manufacture/Company: Yuntian mould

Product Category: Commodity Mould

Place of origin: in/from huangyan,taizhou

Detailed Product Description

Yuntian is an ISO9001:2000 certified company specialized in making plastic injection moulds. Customers’ satisfaction is our goal.

●Mould steel: NAK80,738H, SKD61, P20, 718, 718H, 2738, 738,etc.

●Plastic Material: ABS, PP, POM,PS, PVC, HDPE, HIPS, etc.

●Mould base: LKM

●Hot runner: YUDO, Mold Masters, HASCO, etc.

●Standard parts: DME, Punch Industry, etc.

●High efficiency, short delivery time, competitive price.

●Please provide 2D/3D drawing or samples for the exact quote. Please feel free to contact us.


Crate Mould is made in SANLIAN Mould

Crate Mould is made in SANLIAN Mould

TAIZHOU SANLIAN MOULD CO., LTD. is a manufacturer & supplier of an extensive range of plastic moulds, including plastic chair mold, plastic table mould, Fruits Box Mould, Automobile moulds, Pipe fitting mould, etc.. We have create mould building facilities furnished with latest modeling software, CNC, CAD/CAM capabilities and processing equipments to assure high quality products.

Our goal is to meet or exceed our customers’ expectations through quality design, competitive price, accurate scheduling, prompt delivery and reliable service of our end product.


Now I honestly introduce you some key points of Crate mould


Plastic crate mould
Plastic crate mould


Detailed Product Description

Taizhou Sanlian Mould Co. Ltd is a professional manufacturer of various plastic injection mould Such as Commodity mould, Automobile mould, Home appliance mould, Pipe fitting mould, Smc mould, etc. We also offer the following detail information for your reference:


plastic crate mould
plastic crate mould

MCB Mould is a well known Plastic Chair mould builder in China

MCB Mould is a well known Plastic Chair mould builder in China


MCB Mould which belongs to Zhongyin mould company is a well known Plastic mould brand specialized in producing Household Mould such as Box Mould, Chair Mould, Table Mould, Storage Container Mould, Bathtub Mould, Drawer Mould. Industrial goods mould such as Paint Bucket Mould, Crate Mould, Pallet Mould, Dustbin Mould Auto parts mould such as Lamp Mould. Our company is equipped with CNC advanced machining center, EDM machine and so on. We have rich experience in design and production. With advanced system of CAD/CAM/CAE and strict enforcement of the ISO9001:2000 quality management system, MCB Mould has won a high reputation worldwide. With the concept of ‘innovative thinking and self-motivation’ based on scientific management principles, influenced by the opening of more overseas markets, MCB Mould is working on developing more high-precision and high-quality moulds. In the internet age, information technology has created an excellent communication platform for us. With further scientific innovation can we develop rapidly. We firmly believe that through our friendly communication and cooperation, MCB Mould will give you a fine solution.

Transparent chair mould


Plastic chair mould
Plastic chair mold

Detailed Information:

Product Name: Transparent chair moulding
Maker/Manufacture/Company: MCB MOULD
Product Category: Chair mould
Place of origin: in/from huangyan

Detailed Product Description

For Transparent chair mould injection, MCB Mould can tailor various kinds of Plastic chair moulds for each customer as per their requirements. The quotation can be made based on drawings or samples provided by the customers. Our plastic chair moulds are both excellent in quality and reasonable in price. Your satisfaction is guarantee.

Plastic chair mould
Plastic chair mould