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Mold manufacturing Plastic injection Product decoration Product assembly

As experts in the field of manufacturing plastic components with high complexity and precision, we help create and enhance our customers’ products. With advanced design technology, strict production quality control systems and on-time delivery, we guarantee incredible results for our customers’ investments.
In order to introduce effective and economical solutions to customers’ mold needs, the company provides services such as:

• Design and manufacture mold models

• Injection molding

• Decorative accessories

• Product assembly

We can produce from small components to large details, all shapes, colors, plastic materials, as well as meet all customer technical requirements. Our global brand customers are a testament to our outstanding capabilities.


This is the outstanding advantage of Minh Nguyen Plastic compared to other competitors. We understand the difficulties in mold manufacturing. There are many customers who only have ideas but don’t know how to realize and concretize what they really want because they don’t know how to organize their ideas and don’t know how to start, and this is what we do. can help. Based on experience and expertise, we begin the consultation with questions related to the products the customer wants to produce.

+ Intended use: What is the intended use of the product? The intended use will affect other factors such as shape, color, material… For example, plastic bottles for household goods are completely different from plastic bottles used in chemical production. Therefore, the intended use is an extremely important factor to know first.

+ Circumstances of use: In what circumstances is the product used? Use during the day or at night, indoors or outdoors… For example, if the product is used outdoors, you must choose a good material that can withstand the sun and rain, or if the product is used at night, it needs to be painted in a bright color. for easy visibility.

+ Conditions of use: Under what conditions will the product be most effective or least effective? How do environmental factors impact the product life cycle? Conditions include: temperature, light, humidity, compression, etc. Does the product work well in low temperature, high humidity, or high pressure conditions, and can the product withstand harsh conditions? how long?

+ Competitive advantage: How to increase competitive advantage for products? Based on our experience supplying to many diverse customers, we can see the advantages and disadvantages of the product. We will provide valuable advice on how to design a product that maximizes utility and avoids errors, helping to increase competitive advantage over other products on the market.

Brief introduction to the mold design process

– Calculating the number of mold cavities must be carefully considered and based on the following criteria:

+ Size and clamping force of the injection molding machine, according to the number of products or according to the injection capacity of the injection molding machine

+ Delivery time, depending on the product, is 1-2 weeks

+ Standard product quality requirements

+ Mold size structure depends on the product

+ Product price

– Plastic injection mold design and mold component details are one of the outstanding strengths of Minh Nguyen Plastic. We provide customers with a complete, closed process to the final step to create the most perfect plastic product as expected by customers. The design of plastic injection molds takes advantage of a lot of practical experience to convey into the design process to help reduce the time to produce quality products. In the above article, we have briefly learned about plastic injection mold design. If customers have a need for mold design, please contact Minh Nguyen Plastics to receive the most complete and reliable service.

– The usual mold cavity layout at the company is usually based on experience, but we have to simulate the process of filling mold cavities without channels to know how they are filled, we will create a system. Channel system to create balance for each mold cavity

– Normally, depending on each type of product, we choose different mold cavity layouts. The company often arranges them according to:

+ Rectangular shape

+ Round mold cavity

– Parting surface The design requirements for the parting surface ensure that parts can be easily removed from the mold.

– Choose the face with the largest possible volume, easy to mold and easy to take the product. The smallest possible depth of parting face, easy to fill. The number of parting faces must be at least to ensure accuracy when installing.

– Design of plastic canal system

– This system includes: spray stem, channel and spray nozzle

– Because the size of the nozzle depends on the channel and nozzle, we must design the nozzle and channel first before designing the nozzle.

+ Spray stem:
The injection nozzle is directly connected to the nozzle of the injection molding machine to inject plastic into the mold cavity

The company uses sprayed stem silver rather than making it immediately because it is convenient for processing and replacement.

– Some technical requirements when designing spray stem silver:

+ The radius on the nozzle bush must be 2-5mm larger than the radius on the nozzle

+ The taper angle of the spray stem must be 1-3 degrees

+ Materials: U8A, U10A

+ Hardness: 52HRC – 56 HRC

– Plastic channel:
When designing plastic channels, we must rely on the following technical principles:

+ Minimize the change in channel cross-section. The channel plastic must exit the mold easily

+ The entire length of the channel is shorter to avoid loss of pressure during the full charge process

+ The channel cross section must be large enough to ensure the filling process for the entire product without making the cycle time too long, consuming more material and good clamping force.

+ Injection nozzle for the channel The nozzle has a very important function of filling the mold cavity with plastic. The calculation and arrangement will determine the quality of the product.

– Silver guide pin design

+ Guide pin

+ Plain latch without shoulder

+ Smooth latch with shoulder

– Guide silver:

+ Shoulder type

+ Shoulderless type

+ Self-lubricating shoulderless type

+ Self-lubricating shoulder type

– Sliding system design
Oblique latch cam Remove the error with a cylinder – piston

– Cooling system design

– Design an air release system on the mold parting surface
The air vents should be located where the material is filled last to avoid jamming causing burn marks or the product not being completely filled. The depth of the air vents should comply with the size.