Tag - Guangdong Plastic Injection Molding

Causes and Solutions of Deformation of Injection Molded Parts

The possible reasons for the deformation of injection molded parts are:
 

bending is due to excessive internal stress in injection molded parts.

 

mold filling speed is slow.

 

plastic material in cavity is not enough.

 

plastic temperature is too low or inconsistent.

 

injection molded parts are too hot at the time of ejection.

 

the temperature of cooling is insufficient or the temperature of the moving and fixed die is inconsistent.

 

the structure of injection molded parts is unreasonable (such as stiffeners are concentrated on one side, but […]

Post Processing of Plastic Injection Products

Plastic parts can not be directly put into use after molding and demoulding, and some treatment is needed. Because this treatment is carried out after molding and demoulding, it is called post-processing. It is described as follows:
 

Trimming

 
After demoulding, the plastic parts always have some excess materials, such as gate flying edge, which bring disadvantage to the appearance and use of the plastic parts, so it needs to be removed. This kind of removal is relatively simple, and can be […]

Detailed Explanation of Injection Molding Process for PP Plastics

“Plastic properties are the basis of injection molding technology”. Mastering the technological properties and characteristics of various plastics is a basic professional knowledge that every injection molding worker must know. The performance of plastics is the basis for setting “injection molding process conditions”. It is also the reason that must be considered when analyzing the quality problems and abnormal phenomena in the process of injection molding. One of the elements.
 
PP, commonly known as polypropylene, is also known as “100 […]

Common Used Material Property of Injection Molded Part

PC: PC is the abbreviation of polycarbonate, with excellent electrical insulation, elongation, dimensional stability and chemical corrosion resistance, high strength, heat resistance and cold resistance, but also has self-extinguishing, flame retardant, non-toxic, coloring and other advantages.

Applications: Broad-wave transparent optical instruments; flame-retardant and environmentally friendly telecommunications appliances; surface metallized automotive parts; food containers with low residual harmful substances; anti-cracking and embrittlement medical devices
 
ABS: (ABS resin) (acrylonitrile-styrene-butadiene copolymer), good rigidity, high impact strength, heat resistance, low temperature resistance, chemical resistance, mechanical […]

Injection Molding Design – Summary of Requirements on Mold Design Process

The mold design is different from product design, because it is a process design itself. The basic requirements for mold design are: 

The mold shall be able to complete the process of parts processing.

 

The equipment on which the mold is used shall be specified; and the technical parameters of the equipment shall be complied with.

 
 

The parts molded during the validity period of the mold shall have the dimension tolerance within the allowed range of parts drawings.

 

For prototype mold, the mold […]

Sharing Specific Mold Processing Methods

(1) Determine the type of mold.
Such as pressing die (open, semi closed, closed), casting die, injection mold, etc.
mold making
(2) Determine the main structure of mold type.
The ideal die structure is to determine the necessary molding equipment, the ideal cavity number, under absolutely reliable conditions can make the mold itself work to meet the technical and economic requirements of the plastic parts. The technical requirements for plastic parts are to ensure the geometry, surface finish and dimensional accuracy of plastic […]

5 Trends of Domestic Plastic Mold Development in The Future

Plastic industry has a history of 120 years. After more than a century of great development, plastic is now integrated into all aspects of human life and work, from machinery, electronics, automobiles, information, aviation, aerospace, light industry, military industry, transportation, building materials, medical, biological, energy and other industries. And 60% – 80% of the above industry parts need to rely on mold processing molding, so mold as an important material molding process equipment in the history of the development […]

What Are The Characteristics of Injection Molds?

In the market, most of the molds we come into contact with are injection molds, which inject plastic materials into the molds to form the products needed for sale. In the mold industry, injection moulds are widely used. What are the characteristics of injection moulds? Injection mold is a kind of processing method used in batch production. It is mainly used in industrial field. The process of injection mold is to inject the melted material into the mold cavity […]

What Needs to be Determined before Plastic Mold Design?

Before designing the plastic mold, we must find out the required plastic parts and production conditions. For this reason, we need to do the following work.
 
(1) Acceptance of mission documents
 
The task document for molded plastic parts is usually presented by the designer of the product.
 

the formal drawing of the specimen is signed, and the grade and transparency of the plastic are specified.
Specifications or technical requirements for plastic parts.

3.Production output.

samples of plastic products.

 
Usually the mold design task statement is put […]

Rapid Prototyping Service: Advantages and Disadvantages of PMMA Prototypes

The PMMA material is also known as plexiglass, which is one of the materials in fabricating prototype.
 
PMMA is a kind of plastic of high light transmittance which can be plasticized after being heated. It can allow about ninety-nine percent of light and seventy-three percent of ultraviolet (UV) to transmit through it. PMMA also has high mechanical strength that enables it to be used at high temperatures and adapt various climates. It is corrosion resistant and non-conductive. Under certain to conditions, its […]