Tag Archive for: china mold company

Plastic Moulding

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plastic mouldingPlastic molding is the plastic working through the Injection moulding machine, The melted plastic will automatically molten by the molding machine after erupting out in all of the plastic moulding methods, injection moulding technology has been the most widely used on the word today.
The method comprises the following steps: getting the thermoplastic plastic or the thermosetting plastic imported into the heating cylinder of the injection moulding machine, and when it is completely melted, it will produce heat and frictional heat by the pressure of the plunger or the screw, and is injected into the mould cavity of the closed mould, after curing, and then open the mould and take out the finished product.

If you are looking for plastic moulding service, you are welcome to contact us, we are a professional plastic moulding company in China that offer custom plastic moulding service to the wordwide.


Plastic Moulding Knowledge Guidance

1 The basic knowledge of plastic molding.
1.1 The characteristics and composition of plastic injection moulding.
Plastic Injection moulding is to fill the molten moulding material in a closed mould with high pressure. The pressure that the plastic molding cavity needs to be subjected to about 400 KGF /CM2, approximately 400 atmospheres.
With such a high pressure to make a product is its characteristic which is not the only an advantage but also disadvantages. In other words, the mold always has to be made stable, therefore its’ price is always high. So must be mass-produced in order to buckle with high-priced mould costs.
For example, the production of each batch must be more than 10000PCS to be reasonable. In other words, plastic molding work surely has to be a mass-production.

A few steps of the plastic molding process :
1.1.1 Closing
Close the door of injection molding machine and then start moulding
1.1.2 Clamping mold
Moving forward the moving half in order to get the mould closed. When the mould is closed which means is also locked.

1.1.3 Injecting (including holding press)
The barrel screw is quickly pushing forward, injecting the molten formed plastic material into the mould cavity to full fill it.
Keeping the press at the same time after full filling it, this action is particularly named “holding press.” The pressing that the mold has to bear when it just gets full filled, generally called ‘Injection Press’ or ‘one press’.

1.1.4 Cooling off (and the next step of the plasticization project)
The process of waiting for the material getting cool formed in the mould cavity is called “cooling off”, At this time the injection device is also ready for the next step, this process is called “plasticization process.
The moulded material is placed in the hopper, inflow into the heated tube to heat, it is based on the rotation of the screw turning the raw material into the molten status.
1.1.5 Opening the mould
Move the moving board to the backward and the mould will be opened.
1.1.6 Opening the security door
Opening the security door, then the machine will be in the standby status.
1.1.7 Picking up
Taking out the product, checking carefully if there is anything left in the mould cavity, and this whole forming operation is called moulding cycle time. The finished product is shaped by the shape of the mould.
The mold is composed of the left mould and the right mould, These two sides of moulds are left with voids, and the material would flow into the voids and get compressed to finish the product.
There are three main lines of the path of the molding material before it flows into the left side and right side, sprue, runner, gate, and so on.
1.2 Injection molding machine
Injection moulding machine is distinguished from two large projects, they are divided into two, clamping device and injection device.
1.2.2 clamping device
Closing the mould, the molding material would be cooled off and solidified in the mould cavity. Opening the mould cavity and take out the finished product is the action of the clamping device
1.2.3 Injection Device
Injecting the plastic material into the mould cavity called ‘Injection device’

 

The following describes the ability of the injection moulding machine, there are three provisions to distinguish the ability of it.

A. Clamping force
When the injection is made, the mould won’t be opened by the maximum clamping force, expressed as the number of TON.
B. Injection volume
The weight of a shot is generally expressed in terms of grams.
C. Plasticizing capacity
A certain amount of time able to melt the amount of resin, this is generally expressed in terms of grams.
The most important part is the clamping force, the area of the moulded article is referring the mould perpendicular to the shadow of the opening and closing direction (basically the moud’s area). The average pressure within the mold added to the projection area is called the clamping force. If the mold “projection area × average pressure” is greater than the “clamping force” then the left and the right side moulds will be pushed out.
Clamping force = projection area x average pressure within the mold In general, the mold can withstand the pressure of 400KGF /Cm2, so base on this figure to calculate the clamping force, but the clamping force often based on the shape of forming materials and the shape of the product’s vary.
The difference between the larger parameters such as PE, PP, PS, ABS materials, these raw materials are used to make the shallow box, the parameter is 300KGF /CM2.
If the depth of the box is deeper then the parameter is 400 KGF / CM2, If it is the small but high precision products. The projection area is about 10CM2 or less, its parameters are 600KGF / CM2.
The smaller parameters such as PVC, PC, POM, AS materials, these materials are also used to make a shallow box, the parameters of 400KGF / CM2, if it is a deep box of its parameters is 500KGF / CM2, if it is a small and high precision products, projection area of about 10CM2 below, its parameter is 800KGF / CM2.Chinese molding company

To working with Plastic Moulding is not easy, if you have a project that needs plastic molding service you need to find a professional plastic molding company to support you, to reduce your plastic mold and Injection moulding cost.

Find a Chinese molding company to support you will be one of the best options, plastic mould and moulding parts from China mold company has inexpensive price and short lead time, this is no reason that you do not choose your plastic molding supplier from China.
On the world, over 80% or overseas companies that buy products from China, China is the biggest manufacturer country on the world, this is no doubt about this,

Sincere Tech is an injection mold company in China, offer injection mould, plastic moulding service to the world, 90% of our mold and parts are export to American, Europe, and the world.

If you want to know more information about service, you are welcome to send us an email, if you need price for your project, please send us your requirement for quotation, we will offer you the best price and service. Hope to work together in the near future.

 

China Mold Company

Chinese Mold Company

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Are you looking for A trusted China Mold Company?

Send us your 3D part design or samples pictures, you will lose nothing but will have our competitive price.

If we work on your project.

Your project will be 100% sure successful because we have:

Over 15-year of working experience and 15 years of skilled technical English communication. Professional project management

We can guarantee you that because we are professional.

If you have a technical issue you are welcome to contact us by email

See our happy customers feedback from below.

What are you waiting for? Contact us Now to start your mold project.

China Mold

About Chinese Mold Company

China is known for its industrial activity. There are many factories that set up their operations in China. There are various factors that lead to this. The companies involved in the manufacture of plastic molds use highly advanced technology. The technology used in the production process is backed by teams of highly trained designers. The combination of these factors ensures the goods are manufactured very quickly and efficiently.

Chinese mold companyThe products made in China are used in various parts across the world. People who use them are attracted to them because they are affordable. The use of technology reduces the costs of production which is then enjoyed by consumers in the market. There are many companies that produce these products. However, only those that have embraced the use of modern technology are able to offer quality products to consumers.

A lot of investment has been made in the technology that is being applied in plastics industries and other industries today. In addition to this, the best-molded parts are sourced from Chinese mold manufacturers across the world. Employees in these factories take regular training to equip them with the latest skills required in the production of the goods.

Why Chinese molds are attractive

The use of modern technology in Chinese industries has attracted the attention of consumers from all over the world. The molds manufactured by China Mold Companies  are more affordable. This is one of the main reasons why consumers go for them. Sourcing the same products from other places is quite costly. Most buyers of these products are not very concerned about the quality of the products they are buying. The low cost of production is also as a result of reduced labor cost for the same mold quality.

Why some companies avoid Chinese mold company

Although Chinese molds are attractive to some people, there are others who avoid it. The following may be the reasons responsible for that.

Hidden costs – when you get a quote from a Chinese mold manufacturer, it will exclude some costs. It is important that you be aware of all possible expenses so that you are prepared for them. In most cases, shipping, insurance, and warehousing expenses are not included in the quotation. This will come up as a surprise when you go for your goods, so you may need to get some approx shipment cost in advance.

Poor quality – Chinese mold companies have been often accused of producing poor quality goods. They are further accused of diluting the quality of materials used in order to improve their profits. This can compromise the safety of the people using the products. to prevent this issue you need have your own mold specification, ask your mould suppliers make molds according to your standard. If you buy injection molded parts from Chinese molding companies, you need to specify the type of material you need for your plastic parts, SINCERE TECH will never use any bad quality material or recycle material for our customer, never and ever, unless the custom ask for recycling plastics for their plastic products, for the export molds Sincere Tech will use the HASCO or DME mold components, this will be easy for our customer to replace any mold components in the future if needed, for the mold cavity steel we will use high quality steel like 1.2344,1.2343, NAK80, S136, 1.2738H, etc. and all of cavity steel will by from LKM or according to our customers requirement, and we will provide all of cavity steel certification to our customers.

Legal challenges – it is very difficult to take legal action against Chinese firms. Companies operating here often take different

names to avoid possible legal suits. Patent laws of other countries like the US are not recognized in China. If the products are easy to copy, so you need care for before buying this molds/molded parts from China, we plastic mold and molding parts manufacturing company, we do you have any products and will never sell or copy your products to any others, we can sign the NDA contract to protect your project, meanwhile we suggest do you send your design to many supplier for quotation, because there are still some of the companies doing this kindly thing, when you think a mold supplier may be suitable for your project, sign NDA document in advance.

Delays – there are many logistical challenges associated with Chinese industries. Due to these problems, it is hard to be certain of the turn around time. This can really affect your own production plans. to prevent this you need to have some safety time for yourself in case any issue happened.

All in all, today lots of companies are buying a plastic mold and plastic parts from Chinese molding company, this is a trend, if you want to increase your profits you need to do it and do it quickly. if meet some problem, then solve the problem, anywhere will have a problem unless you do nothing.

Sincere Tech has worked for lots of overseas customers, we have a professional technical team and manufacturing capacity, our project management team have 15 years of technical background and speak good English, this will help you to solve any technical issue and communication is smooth and fast.

Read to start your plastic molds and molding project with us? Call us or send us an email, we will offer you the best solutions.

Plastic Injection Molding Company

Manufacture of Chinese Plastic Injection Molds

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WHAT IS THE PLASTIC INJECTION MOLD?

Injection molds are defined as the general manufacturing process adopted to make plastic parts for various products. This method is used to make parts that differ in size, application, and complexity and the process involves the use of a machine called an injection molding machine along with molds and raw plastics. This process involves melting the plastic in a molding machine along with injecting it into a mold from a cooled place and compacted it into the final product.

One of the main and fast processes, Injection molding is a popular method for producing fabricated plastic products. All kinds of goods are produced using this technique be it household goods or engineering equipment. There is a series of activities carried out at the Plastic Injection Molding Company that are highlighted and explained in this article that will help you understand the work of the organization and open it up if you are an entrepreneur.Injection mold China

ADVANTAGES OF INJECTION MOLDING COMPANY IN CHINA

The advantage of using a Chinese mold manufacturer is that there are more financial savings compared to western plastic injection or production. The cost savings involved in-mold construction are around 30% to 50% when compared to U.S. mold makers. Another advantage of them is the fast production of designs along with the very fast delivery of plastic product samples.

There are other advantages such as making greater capacity and the possibility of finishing cheap products such as silkscreens, sublimation techniques, tempo printing, stamp printing, etc. It’s also economical and has fast choices for manual assembly. It offers various packaging options such as cardboard boxes, blistering or products sourced from different companies.

Other main advantages include the availability of complex components and structures, high efficiency along with the production of plastic parts that are easy and simple, flexibility in terms of materials, as well as color and easy printing engineering processes. This is also the most effective way to obtain plastic products because the cost of resin and manufacturing process is much lower when compared to metal machining and other printing processes.

THE SERVICES OFFERED

Chinese mold manufacturers also offer services such as giving advice on making rapid prototypes or making prototypes. They also have experience in fields such as rubber and TPR/TPE or TPO products. They have knowledge in the field of engineering plastic products and other materials along with high experience in two-component plastic injection molds.

Most manufacturers also involve 3D CAD design along with engineering and product development from its originality. They also combine rapid prototyping with the help of CNC milling from POM, PA, ABS or other plastic varieties available. Molds are usually finished in 20 to 25 days and plastic mold prices range from $1500 to $3500.

THE PROCESS INVOLVED

There are six main steps involved in making molds namely mounting the mold, baking the material, clamping the mold, injection of the material, cooling, and compaction of the part and discharge.

Most manufacturers also ensure quality control of products produced by plastic injection molds with inspection and analysis procedures along with complete dimensional inspection of all plastic mold components and reports sent to clients for review. Plastic injection molding machines ensure that each plastic mold is of the highest quality and thoroughly inspected for defects in terms of visual, dimensional and functional aspects before sending plastic products to clients around the world.

SINCERE TECH plastic injection mold China manufacturer offers precision injection molding services for plastic components to clients around the world for applications in various sectors such as automobiles, household appliances, and other consumer products while ensuring the high quality and strength of these products. For more details on China’s leading plastic injection mold manufacturer, please visit https://www.plasticmold.net/

Plastic Moulding

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plastic mouldingPlastic moulding is the plastic work through the Injection moulding machine, The melted plastic will automatically molten after erupting out in all of the plastic moulding methods, injection moulding has been the most widely used. The method comprises the following steps: getting the thermoplastic plastic or the thermosetting plastic imported into the heating cylinder of the injection moulding machine, and when it is completely melted, it will produce heat and frictional heat by the pressure of the plunger or the screw, and is injected into the mould cavity of the closed mould, after curing, and then open the mould and take out the finished product.


Plastic Moulding Knowledge Guidance

1 The basic knowledge of plastic molding.
1.1 The characteristics and composition of plastic injection moulding.
Plastic Injection moulding is to fill the molten moulding material in a closed mould with high pressure. The pressure that the plastic molding cavity needs to be subjected to about 400 KGF / CM2, approximately 400 atmospheres. With such a high pressure to make a product is its characteristic which is not the only an advantage but also disadvantages. In other words, the mold always has to be made stable, therefore its’ price is always high. So must be mass-produced in order to buckle with high-priced mould costs. For example, the production of each batch must be more than 10000PCS to be reasonable. In other words, plastic molding work surely has to be a mass-production.

A few steps of the plastic molding process :
1.1.1 Closing
Close the security and then start moulding
1.1.2 Clamping mold
Moving forward the moving board in order to get the mould closed. When the mould is closed which means is also locked.

1.1.3 Injecting (including holding press)
The screw is quickly pushing forward, injecting the molten formed plastic material into the mould cavity to full fill it. Keeping the press at the same time after full filling it, this action is particularly named “holding press.” The pressing that the mold has to bear when it just gets full filled, generally called ‘Injection Press’ or ‘one press’.

1.1.4 Cooling off (and the next step of the plasticization project)
The process of waiting for the material getting cool formed in the mould cavity is called “cooling off”, At this time the injection device is also ready for the next step, this process is called “plasticization process. The moulded material is placed in the hopper, inflow into the heated tube to heat, it is based on the rotation of the screw turning the raw material into the molten status.
1.1.5 Opening the mould
Move the moving board to the backward and the mould will be opened.
1.1.6 Opening the security door
Opening the security door, then the machine will be in the standby status.
1.1.7 Picking up
Taking out the product, checking carefully if there is anything left in the mould cavity, and this whole forming operation is called moulding cycle time. The finished product is shaped by the shape of the mould. The mold is composed of the left mould and the right mould, These two sides of moulds are left with voids, and the material would flow into the voids and get compressed to finish the product. There are three main lines of the path of the molding material before it flows into the left side and right side, sprue, runner, gate, and so on.
1.2 Injection molding machine
Injection moulding machine is distinguished from two large projects, they are divided into two, clamping device and injection device.
1.2.2 clamping device
Closing the mould, the molding material would be cooled off and solidified in the mould cavity. Opening the mould cavity and take out the finished product is the action of the clamping device
1.2.3 Injection Device
Injecting the plastic material into the mould cavity called ‘Injection device’

 

The following describes the ability of the injection moulding machine, there are three provisions to distinguish the ability of it.
A. Clamping force
When the injection is made, the mould won’t be opened by the maximum clamping force, expressed as the number of TON.
B. Injection volume
The weight of a shot is generally expressed in terms of grams.
C. Plasticizing capacity
A certain amount of time able to melt the amount of resin, this is generally expressed in terms of grams.
The most important part is the clamping force, the area of the moulded article is referring the mould perpendicular to the shadow of the opening and closing direction (basically the moud’s area). The average pressure within the mold added to the projection area is called the clamping force. If the mold “projection area × average pressure” is greater than the “clamping force” then the left and the right side moulds will be pushed out.
Clamping force = projection area × average pressure within the mold In general, the mold can withstand the pressure of 400KGF / Cm2, so base on this figure to calculate the clamping force, but the clamping force often based on the shape of forming materials and the shape of the product’s vary, the difference between the larger parameters such as PE, PP, PS, ABS materials, these raw materials are used to make the shallow box, the parameter is 300KGF / CM2, , if the depth of the box is deeper then the parameter is 400 KGF / CM2, If it is the small but high precision products. The projection area is about 10CM2 or less, its parameters are 600KGF / CM2. The smaller parameters such as PVC, PC, POM, AS materials, these materials are also used to make a shallow box, the parameters of 400KGF / CM2, if it is a deep box of its parameters is 500KGF / CM2, if it is a small and high precision products, projection area of about 10CM2 below, its parameter is 800KGF / CM2.Chinese molding company

To working with Plastic Moulding is not easy, if you have a project that needs plastic molding service you need to find a professional plastic molding company to support you, to reduce your plastic mold and Injection moulding cost, find a Chinese molding company to support you will be one of the best options, plastic mould and moulding parts from China mold company has inexpensive price and short lead time, this is no reason that you do not choose your plastic molding supplier from China, on the world, over 80% or overseas companies that buy products from China, China is the biggest manufacturer country on the world, this is no doubt about this,

Sincere Tech is an injection mold company in China, offer injection mould, plastic moulding service to the world, 90% of our mold and parts are export to American, Europe, and the world, if you want to know more information about service, you are welcome to send us an email, if you need price for your project, please send us your requirement for quotation, we will offer you the best price and service. Hope to work together in the near future.

 

How To Buy Plastic Injection Mold and Molding Parts From China

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China has become a major destination for plastic mold & molding service. Lower prices are the primary incentives for many foreign buyers. The majority of foreign buyers find challenges sourcing plastic injection molding from China. The major strains are on how to buy, how to evaluate quality, or how to identify a reliable source.

Many things go wrong in case of compromise in the purchase process. For example, delayed delivery, frauds, low quality, weakness of communication (both on language and technical), and other problems may be encountered. To avoid such frustrations, the following is a process of how a buyer would purchase plastic injection molding from China. Hope this could help you find your best suitable supplier

1. Identify a Reliable Plastic Molding Manufacturer

Currently, there are many mold manufacturing companies in China. You need to determine which supplier is reliable. Some of the factors to consider include, mold price, quality, quantity, accessory standard, communication, lead times, and the mold design, among other factors.
Using the World Wide Web, you can easily find a wide range of plastic molding suppliers from the internet, sourcing agents, and trade shows, etc.

It is important to contact several suppliers before making a decision on a suitable supplier.
Buy Plastic Injection molding from China

2. Evaluate the Various Mold/Molding Manufacturers

Conducting market research on the various plastic molding manufacturers helps to find a suitable fit for the business. So how can one evaluate the Chinese mold makers to identify a reliable source?
Sending inquiries helps the evaluation process. You should focus on asking questions that evaluate the core competence of the plastic molding companies.
A good supplier is one that shows interest in your projects, has effective communication, knowledgeable, detail-minded, and honest. The evaluation should target to identify the salient attributes of the supplier, for example, what is advantages do they have, is it suitable for your project? Have they done any similar projects like yours? All of the information will help to make your project smoothly or not.

3. Information Verification

Not all manufacturers are who they say they are. The customer should be able to verify the plastic molding manufacturer. Some of the information that can be verified include:

  • Type of mold parting line
  • The type of ejection modes, whether pins are used and the particular locations,
  • Surface requirement on the visible surface
  • The location and type of gates

Such information helps to verify the mold designs and product appearance. the most important thing is basing on this discussing with each other you will know their communication and technology ability. A supplier that verifies the information and offers samples is reliable.

4. Analysis of Production Issues that may Arise

A good plastic molding supplier should communicate the issues in advance and concerns that may arise in the production process, and actions are taken to address the issue. A good injection mold company should analyze the current design and offer rational recommendations, we call this DFM report.
Some of the important questions that help identify some of the issues include;

  • Have you produced similar molds/products before?
  • What were the challenges encountered?
  • Can you send your quality control inspection report?
  • How do you address the issues that arise?
  • Do you offer compensation for compromises?

With all the information, you should already have identified which Chinese molding company to source from.

5. Firm/Supplier Site Visit 

Depending on the quantity of supply sourced, visiting the supplier may be important. For large quantities of plastic molding service, traveling to China should be a basic step. The objective is to analyze samples and evaluate the reliability of the supplier.

Go to their plastic molding company on site to communicate with them face to face, then you will know how the technical skill, English ability, etc.  But mostly not always have time to check their mold factory, so we suggest you may ask for a skype video shows if you have no time to visit them.

At SINCERE TECH will take Skype video meeting to show you around our plastic mold and molding factory if you have no time to visit our factory, our sales and project manager speak good English and have the professional technical skill, you will know this during the video shows. if you are interested in our service, you are welcome to contact us.

6. Maker A Contract

Importing products from China and Asian nations can be risky and complicated. Contracts are antidotes against the common mistakes and issues that may arise. It is essential for buyers to get into a contract for the following reasons;

  • To maintain clarity on product specifications and avoid misunderstandings. The specifications of the product can be easily lost in Skype or mail communication.
  • Compensation terms help suppliers to think twice about compromise.
  • Contracts help to communicate on how severe your business is
  • It helps to avoid delays

The first time you work with a China plastic injection molding company (same to work with your local supplier), you should always make agreements on contracts to avoid scams and fraud. Suppliers who default the negotiations should be responsible for making refunds and necessary compensations.

7.Payment and Delivery

Based on the set agreement, the amount can be paid by one time or two times ( maybe more times). The payment method depends on the agreed strategy. Some companies make payments via Paypal, Skrill, Payoneer, Western Union, Cheque, or other policies. Our standard payment term is T/T wire transfer. If the small amount. PayPal is still available,  this is method is normally working for all of the companies in China, especially for custom plastic molding manufacturing service.

Concluding Thoughts 

Buying plastic molding from China can be challenging. However, if you follow the seven steps, the process is easy and with no compromise. when you find your reliable partner from China, then your business will be increased rapidly, this is verified by lots of companies like Apple, and other car companies (over 80% of car companies buy their auto car molds from China), etc.

Doing online businesses have fraudulent operations. You should be cautious on the approach of doing business online to avoid frustrations, lots of company doing online business with China and successful to the business, also some of the customers had issues when doing business with Chinese manufacturers, or even have issues with your local supplier as well, do you agree?  The above steps could help you avoid this issue and the success of your business.

Need any plastic injection mold/molding companies from China? Contact us now, you will find out we are your best partner in China. Welcome to talk with us on any questions.