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So far katrina wang has created 96 blog entries.

Factors You Need to Consider When Choosing the Ideal Trigger Sprayer

By |2020-11-17T00:21:40+00:00November 16th, 2020|For all, plastic industry|

Trigger sprayers are commonly made from polypropylene (PP). They are mounted on various designed containers that have liquid content. These products can be just plain water, cleaning agents, chemicals, etc. The advantage of using trigger sprayers is that they can be locked at the end of the nozzle. That is an excellent feature for children’s safety because some liquids

About the Precision Injection-molding Process Ⅱ

By |2020-11-11T01:30:09+00:00November 11th, 2020|For all, plastic industry|

Part Ⅱ 3. Features and selection of precision injection machine 3.1 Features in technical parameters According to injection pressure, ordinary machine: 147 ~ 177MPa precision machine: 216 ~ 243MPa ultra-high pressure machine: 243 ~ 392 MPa The reasons why precision injection molding machines must be high pressure are: (1)  To improve the

About the Precision Injection-molding Process Ⅲ

By |2020-11-11T01:38:27+00:00November 11th, 2020|For all, plastic industry|

Part Ⅲ 4. Shrinkage problems in precision injection molding There are four factors that affect shrinkage: thermal shrinkage, phase change shrinkage, orientation shrinkage and compression shrinkage. 4.1 Thermal shrinkage It’s the inherent thermal physical properties of molding materials and mold materials. If the mold temperature is high, the product temperature will be high and the actual

About the Precision Injection-molding Process Ⅰ

By |2020-11-11T01:37:01+00:00November 10th, 2020|For all, plastic industry|

Part Ⅰ 1. Concept When general injection molding machines and conventional injection molding processes can’t meet the requirements of the high dimensional repeatability of processed injection products, the precision injection molding will be used. The concept of "precision injection molding" is mainly different from "conventional injection molding". It is based on the rapid

The Types of Plastic Molding and Processing

By |2020-11-13T00:34:29+00:00November 6th, 2020|For all, plastic industry|

❀ Injection molding The plastic material is first heated and melted in the heating barrel of the injection molding machine. And then the melt is pushed into the cavity of the closed mold by the reciprocating screw. It can produce high-precision and high-quality products under high productivity. What’s more, it can process a large variety

How to Increase the Brightness of ABS Injection Molded Parts?

By |2020-11-10T01:58:21+00:00November 4th, 2020|For all, plastic industry|

The reasons for poor gloss of plastic parts can be considered from mold, injection molding process, raw materials, etc. 1. Injection mold (1) If the mold cavity is poorly processed and has defects like scars, micro-holes, abrasion, roughness, etc., it will inevitably reflect on the plastic parts. Therefore, we should carefully process the mold for the

About the Design of Gas-assisted Injection Products

By |2020-11-10T06:11:36+00:00November 2nd, 2020|For all, plastic industry|

Gas-assisted injection molding technology is an emerging plastic injection molding technology. Its principle is to use high-pressure gas to produce a hollow section inside the plastic part. And use gas pressure to replace plastic injection pressure to eliminate product sink marks and complete the injection molding process. The gas-assisted injection molding process mainly includes: plastic

The Processing Principle of Gas-assisted Injection Molding System

By |2020-11-10T01:59:34+00:00October 30th, 2020|For all, plastic industry|

The gas-assisted injection molding system directly injects nitrogen into the plasticized plastic in the mold cavity through a segmented pressure control system. Then, the inside of the plastic part expands and becomes hollow. But it still keeps the shape of the product surface intact. Advantages of applying gas-assisted injection molding technology: 1) Save plastic

Effects of Mold Temperature on Quality Control of Injection Molded Parts

By |2020-11-10T08:41:10+00:00October 28th, 2020|For all, plastic industry|

The 5 Effects of Mold Temperature on Quality Control of Injection Molded Parts Mold temperature refers to the surface temperature of the mold cavity in contact with the product during the injection molding process. Because it directly affects the cooling rate of the product in the mold cavity. And that has a great impact

Application and Process of Gas-assisted Injection Molding

By |2020-11-11T01:46:36+00:00October 26th, 2020|For all, plastic industry|

1. The principle of gas-assisted injection molding High-pressure inert gas (nitrogen) is injected into the molten plastic to form a vacuum section and push the molten material forward. And that finally realizes the processes of injection, pressure holding and cooling. Due to the efficient pressure transmission of the gas, the pressure in the air passage can be kept

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