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Causes and solutions of sprue sticking in injection molding

Causes and solutions of sprue sticking during injection molding:
(1) The cooling time is too short and the sprue has not yet solidified.
(2) If the gradient of the sprue is not enough, the demoulding gradient should be increased.
(3) The improper fit size between the sprue bushing and the nozzle results in leakage.
(4) The main channel is rough and there is no cooling well in the main channel.
(5) If the temperature of nozzle is too low, the temperature should be increased.
 
 
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Analysis of cooling time in injection molding

The cooling time of plastic injection molding products accounts for about 80% of the whole injection molding production cycle. If the injection molding parts are cooled properly, the product quality is qualified. If the cooling is not qualified, it will lead to warpage deformation or surface defects, which will affect the dimensional stability of the products. The injection molding manufacturers analyze the cooling of injection molding parts for you.
 
The cooling time of injection molded parts generally refers to the […]

Causes and solutions of bubbles in injection molding

In the process of injection molding, bubble is a very common phenomenon, light is harmless, heavy directly affects the actual quality of injection molding products.
 
1、 Causes of bubbles in injection molding
In the process of injection molding, when the wall thickness of the product is large, the cooling speed of the outer surface is faster than that of the central part. Therefore, with the cooling process, the resin in the central part shrinks and expands to the surface, resulting in […]

How to solve the peculiar smell of injection molding products

Injection molding products are not only required to be qualified in quality, but also have adverse effects on customers if there is a peculiar smell in the produced injection parts. In particular, some injection molding plants use qualified plastic particles, and the increase of peculiar smell will directly affect consumers’ purchase of products. Therefore, injection molding products need to be guaranteed that there is no bad smell.
 
1. Strictly control the use of additives
The TERT amines used in the production […]

Introduction of PC plastic injection molding process

PC plastic is one of the most common plastics in injection molding process. Many plastic parts are especially made by injection molding. PC plastic has been recognized by the market for its excellent performance. What should be paid attention to in the process of PC plastic injection molding? JasonMould manufacturers will share with you.
 
1、 Introduction to the properties of PC plastics
PC is widely used in the field of electronic and electrical appliances and industrial parts because of its high […]

Is the injection product cracked again? This article teaches you to deal with cracking easily

In our injection molding, due to various factors, we often see some uncomfortable cracking after molding, which often makes us feel headache. So today, let’s talk about how to deal with the cracking of plastic parts.
Cracking includes filamentous cracks, microcracks, white top, surface cracking of parts, or trauma crisis caused by sticking parts and flow channels. According to the different cracking time, cracking can be divided into demoulding cracking and application cracking. There are three main reasons
Processing reason:
(1) If […]

Customized processing of plastic injection mold for Automoblie JasonMould

The automobile industry has developed rapidly in the past ten years, and more and more new products have entered the market, such as new energy vehicles. A large number of automatic parts are made of plastic. As a new material of automobile parts, plastic parts can reduce the weight of automobile and save energy, so they are widely used in automobile industry. This means that a large number of plastic injection molds are needed to produce the required plastic […]

Delamination and peeling of injection molding

The causes of delamination and peeling in injection molding products are as follows
Material temperature is too low, injection mold temperature is too low, screw speed is too fast, resulting in internal stress.
The cold material hole is small, the fluidity is poor, and the material is cooled too fast.
The holding pressure is low and the back pressure is too low.
The raw material is mixed with impurities.
Release method:
Increase the material temperature, die temperature, reduce the shear force of melt flow, reduce […]

Selection of gate position in precision injection mold design

The gate design of precision injection mold can make the flow velocity of molten plastic transported by sub channel produce acceleration, form ideal flow pattern and sequence, and quickly fill the mold cavity. At the same time, it also plays the role of closing the mold cavity to prevent the molten material backflow, and it is convenient to separate the gate from the plastic part after molding. Since the gate plays such an important role in the design of […]

How to prevent the repeated test of injection mold?

Most people are particularly concerned about “how much is the cost of the injection mold?” In general, the cost accounting of injection mold is mostly traceable. But there are also some cases where the cost of the injection mold will be increased. One of them is repeated trial. The repeated trial mold not only increases the cost of injection mold, but also delays the time of product putting into the market, which is very disadvantageous for customers to seize […]