Tag - plastic injection molding china

How to reduce the cost of plastic mold

Reduce the cost of plastic mold processing, can effectively improve the economic benefits of plastic mold factory production, conducive to the plastic mold factory and product market competitiveness. If the plastic mold factory can reduce a variety of unnecessary waste, so as to achieve reasonable storage, use materials, reduce costs, improve the purpose of efficiency, so as to ensure the reasonable needs of production, but also to reduce the use of capital and waste. So, what is the plastic […]

Analysis of injection process of PC plastics

PC plastics have excellent properties, high transparency, good impact toughness, creep resistance, wide temperature range. PC plastics have the following process characteristics
The sensitivity of melt viscosity to shear rate is small, but to temperature is large, there is no obvious melting point, the viscosity of melt is high, the resin is easy to hydrolyze at high temperature, and the product is easy to crack. In view of these characteristics, special attention should be paid to differential treatment: to increase […]

The advantages of spray painting on the surface of plastic parts

The surface of the plastic part can be sprayed to ensure the brightness of the product. Because plastic is so hard to embody, plastic parts look darker, and even darker if they are covered in leather. Therefore, in the pursuit of a beautiful surface, Some customers requires to spray a layer of  painting on the surface of plastic parts. This will ensure the brightness of the product.
Spraying the surface of plastic parts can reduce the scrap rate of parts. […]

How to deal with the weld lines of injection parts?

What is weld lines
Weld lines are the most common defects in injection molded products. Except for a few injection molded parts with very simple geometry, weld lines occur in most injection molded parts (usually with one line or V-shaped groove), especially in large-scale complex products requiring multi gate mold and inserts.
Weld lines not only affect the appearance quality of plastic parts, but also the mechanical properties of plastic parts, such as impact strength, tensile strength, elongation at break, etc. […]

Factors affecting the number of cavities in Plastic Injection Molds

The cavities in Plastic injection mold is not the more the better, also not all molds can be done with 4 cavities or 8 cavities. So what are the factors affecting the numbers? Let’s have a look below:

Relationship between the product size and equipment.

When the part belongs to large or medium size, generally speaking, single cavity is used. On the one hand, it is necessary to consider the fluidity of plastic material filling mold when injection molding, so as […]

To standardize the management of mold factory

(1) Standardized management of product and drawing data
Effective management can ensure the comprehensiveness and consistency of data, and make the data share and query effectively. To prevent problems caused by data inconsistency and drawing non-standard from being found and corrected in time, resulting in rework and maintenance of the mold, increasing the manufacturing cost of the mold, and affecting the delivery time
(2) Establish the company’s own quality inspection mold department, standardize various inspection methods. Get rid of fluke. Strengthen […]

Will the temperature affect the processing of plastic mold?

The temperature of plastic mold is very important for injection molding. If the temperature of the plastic mold is well controlled, the processed products will be good products; if the temperature of the plastic mold is not well controlled, the processed products may be scrap products.
Plastic mold
So, what kind of influence will the temperature of plastic mold have on the processed products?
1. The temperature of the plastic mold will reduce the standard accuracy of the product, which will reduce […]

Forming characteristics of ABS in plastic injection molding

Today, we would like to introduce the forming characteristics of ABS in plastic injection molding.
 
1.ABS is easy to absorb water, and should be dried before forming. Plastic parts with high surface gloss requirements should be preheated and dried for a long time
 

Medium liquidity, about 0.04mm overflow edge.

 

The wall thickness and melting temperature have little effect on shrinkage, and the size of plastic parts has high precision.

 
4.ABS has low specific heat capacity, high plasticization efficiency and fast solidification, so the […]

Structure Analysis of plastic mold

To analyze the structure of the plastic mold, we first need to know whether the product has the conditions for opening the mold, whether there are factors that affect the mold such as drawing, wall thickness, shrinkage deformation, buckle, etc. , knowing the shrinkage rate and fluidity of the product materials will determine the position of the gate and runner of the mould. After knowing the related information of the materials of the product structure, the next step is […]

How to prevent stripe defects in precision injection molding?

As we all know, the stripe defect in mold is a very serious matter, it will directly affect the accuracy of injection molding, and will also lead to product scrap, so we must pay attention to. So, how can we avoid this defect?
Proper design, careful processing, reasonable mold repair and timely nitriding are the key measures to prevent the occurrence of stripe defects in precision injection molding.
It should be processed in strict accordance with the requirements of the drawing, […]