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Technical points of transparent product injection molding.
Due to the high light transmittance of transparent plastics, the surface quality of plastic products must be strict, and there must be no speckles, pores, and whitening. Mist halo, black spot, discoloration, poor gloss and other defects, thus affecting raw materials and equipment during the whole...Read more -
Selected materials for metal stamping
Hardware: traditional hardware products, also known as “hardware”. It refers to five metals: gold, silver, copper, iron and tin. After manual processing, it can be made into art or metal devices such as knives and swords. Hardware in modern society is more extensive, such as hardware ...Read more -
Introduction to PVC injection molding enamel toy technology
Enamel technology has covered every corner of people’s life. Enamel toy is a popular toy that can bring infinite vitality, but at present there are relatively few domestic enamel toy products. Commonly used plastic materials for toy products include: PA nylon, POM Saigang, PC bulletproof ad...Read more -
Types of engineering plastics
The types of engineering plastics commonly used in China are polycarbonate, polyformaldehyde, polyamide, thermoplastic polyester and modified polyphenylene ether. 1. Polyamide: (PA, common name: nylon) has won people’s attention because of its unique low specific gravity, high tensile stre...Read more -
The importance of mold exhaust
In mold manufacturing, mold exhaust is a very important link. Mold exhaust can represent the overall structure of the mold to the greatest extent. Even if an excellent mold does not have good exhaust, it is impossible to produce products with stable quality. A good mold should have good airtightn...Read more -
Injection molding technology of plastic gear.
1、 Concept and application of precision gear die 1) The precision gear refers to the very high requirements for parameter size and performance, including the outer diameter of the tooth tip circle, the outer diameter of the tooth root circle, the modulus, the diameter of the indexing circle (als...Read more -
The five important points of injection molding downtime maintenance before the Spring Festival holiday
Strategy 1: injection molding machine and mold protection Clean the garbage and dirt in the hinge and wipe with rags. Before the three-plate injection molding machine is stopped, the mold should be opened to a distance of 5-10 mm, so that the hinge (crank) mechanism of the mold locking machine i...Read more -
How to reduce the smell of TPR injection molding toys?
Thermoplastic elastomer TPE/TPR toys, based on SEBS and SBS, are a kind of polymer alloy materials with general plastic processing properties but rubber properties. They have gradually replaced traditional plastics and are the preferred materials for Chinese products to go abroad and export to Eu...Read more -
Classification and application of rubber
1. Definition of rubber The word “rubber” comes from the Indian language cau uchu, which means “weeping tree”. The definition in ASTM D1566 is as follows: rubber is a material that can quickly and effectively recover its deformation under large deformation and can be modif...Read more -
How to prevent the injection molding machine from freezing in winter?
When winter comes, the temperature is falling all over the country, and in some areas it drops below 0 ℃. In order to avoid unnecessary economic losses, the injection molding machine should be frozen when it is stopped to prevent the water in each element from freezing and causing damage to the e...Read more -
How to prevent glue leakage in injection molding production?
It is a very bad thing that the machine leaks glue in the injection molding production process! It not only causes equipment damage, but also affects the timely delivery of products, and the maintenance work is also very hard. How to prevent glue leakage during injection molding production? 1. T...Read more -
Waste plastics of household appliances
As a key factor to improve the quality of life, household appliances have broad prospects for development. With the continuous increase of national disposable income and the upgrading of consumption structure, it has become a new trend to disassemble waste household appliances and extract hazardo...Read more -
SPI Plastic Identification Scheme
The first goal of plastic packaging waste treatment is to recycle containers as resources to protect limited resources and complete the recycling of packaging containers. Among them, 28% of PET (polyethylene terephthalate) bottles used for carbonated drinks can be recycled, and HD-PE (high-densit...Read more -
What are the causes of defects in metal stamping parts?
What are the causes of defects in metal stampings? Hardware stamping refers to the die for steel/nonferrous metal and other plates, which is formed into the specified shape by the pressure machine to provide the required processing pressure under room temperature. What are the causes of defects i...Read more -
How to adjust the injection pressure?
In our machine adjustment, we usually use multi-stage injection. The first level injection control gate, the second level injection control main body, and the third level injection fill 95% of the product, and then start to maintain the pressure to produce the complete product. Among them, the in...Read more -
Shrinkage setting of injection molding process
The factors affecting the shrinkage of thermoplastics are as follows: 1. Plastic type: During the molding process of thermoplastics, there are still some factors such as the volume change due to crystallization, strong internal stress, large residual stress frozen in the plastic part, strong mole...Read more -
Analysis on “Peeling” of PC/ABS Plastic Parts
PC/ABS, as the main material of automobile interior trim and electronic and electrical shell, has its irreplaceable advantages. However, in the injection molding process, improper materials, mold design and injection molding process are likely to lead to peeling on the product surface. In genera...Read more -
How to remove burrs on metal stampings?
The formation of metal stampings is mainly made by cold/hot stamping, extrusion, rolling, welding, cutting and other processes. It is inevitable that the metal stampings will have burr problems through these operations. How does the burr on the metal stampings form and how should it be removed? ...Read more -
Treatment of the chatter mark in Injection Molding
Shattering defect is a typical defect near the gate in injection molding defects. However, many people are confused, unable to identify the defect or make analysis mistakes. Today, we will make a clarification. It is characterized by cracks radiating from the gate to the periphery, which are deep...Read more -
Methods to prevent rust and corrosion of metal stamping parts
Hardware stampings have been widely used in our daily life. Due to the wide range of applications, the quality requirements for hardware stampings are also constantly improving. For example, the surface corrosion and erosion of hardware stampings is a very common problem. For the treatment of thi...Read more