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 […]
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. […]
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 […]
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 […]
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, […]
Discoloration refers to the inconsistency between the surface color of the formed parts and the required color. Discoloration may be caused by a variety of reasons, including injection molding machine, plastic mold, injection process and raw materials.
(1) Injection molding machine
① The equipment is not clean and needs cleaning. Dust or powder deposited in the barrel contaminates and discolors the material;
② Temperature control fault caused by temperature controller or heating system fault;
③ There are obstacles in the barrel, which lead […]
The design of the injection mold was not fully collectively reviewed, and the structure of the injection mold was unreasonable, which caused the injection mold to undergo multiple improvements after the test, which made the injection mold cost exceed the budget.
If it can be solved after several improvements, it is relatively fortunate. There are many cases that are unsatisfactory, and even the injection molds have to be scrapped and reworked. This cost cannot be controlled.
There are also cases where […]
Warpage and deformation of injection products are very difficult problems. Mainly from the mold design to solve the problem, and the forming conditions of the adjustment effect is very limited. The causes and solutions of warpage and deformation can refer to the following items:
1) When the deformation is caused by the residual stress caused by the forming conditions, the stress can be eliminated by reducing the injection pressure, increasing the mold temperature, increasing the resin temperature or annealing.
2) When […]
In order to ensure the normal processing of plastic parts, operators need to understand the cause of the abnormal appearance in this process, the better to avoid the abnormal appearance during processing. Below, JasonMould share you the causes of deformation in processing:
During the process of molding, the surplus material is spilled into the gap between the mold and the mold surface and retained on the plastic part. A kind of linear trace on the surface of plastic parts, is […]
The basic reason for surface sag: from the perspective of plastics, when the plastic cools and shrink, insufficient filling will lead to product surface sag or internal cavity.
The causes and solutions of defects are different depending on the location of sag.
When the sag occurs at the final cooling position of the thick-walled product, or at a distance from the sprue:
Cause analysis: The typical thick wall and the surface sag or hole far from the sprue are usually due to […]