How to Increase the Brightness of ABS Injection Molded Parts? The reasons for poor gloss of plastic parts can be considered from mold, injection molding process, raw materials, etc. The followings are the ways to increase the brightness of ABS injection molded parts. 01 Injection mold 1.1 Mold cavity If the mold cavity is poorly … Read more
The Types of Plastic Molding and Processing 1. 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 … Read more
Mold for and Shrinkage Problems in Precision Injection Molding 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 … Read more
Features and Selection of Precision Injection Molding Machine 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 (1) To … Read more
The Concept of Precision Injection Molding and Selection of Materials 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 … Read more
Black Spots on Injection Products | Possible Causes This is an analysis of the possible causes of black spots on injection products. Causes of black spots 1. Machine As the heating control system is out of control, the barrel is overheated and becomes black after decomposition. Due to the defect of the screw or the … Read more
How to Ensure the Safety When Operating Injection Molding Machine? The operating procedures of the injection molding machine 1. Familiar with the operation of injection molding machine The operator must be familiar with and understand the function of each switch button on the equipment operation panel. And operate in strict accordance with the operating rules and … Read more
Causes of Silver Streaks in Injection Molding 1. Phenomenon of silver streaks A phenomenon in which silver streaks occur on the surface of a molded product. 2. Cause of silver streaks Poor air release (gas release) Overly small gates, runners, and sprues Insufficient degassing of the mold Small slug well A lot of water adsorbed on the … Read more
Notes for Multi-material Injection Molding Over injection molding, like co-injection molding, bicolor injection molding and sandwich injection molding, belongs to multi-material injection molding technology. The basic idea of multi-material injection molding is to combine two or more materials with different characteristics to increase product value. The first injected material is called the base material or … Read more
Preparations Before Injection Molding In this article, we will discuss the preparations before injection molding. So the following steps are indispensable for the quality of injection molded products. 1. Inspection of raw materials Check whether the packaging, particle shape and size, appearance color of plastic raw materials are the same as the type and model … Read more
