CN Mould & Plastic Limited

Scientitfic Molding Studies

03
02, 2026
Conquering Injection Molding Defects: A Systematic Guide to Tackling Product Cracking
In the world of plastic injection molding, few quality issues are as frustrating and damaging as product cracking. This defect not only ruins the appearance of a part but, more critically, compromises...
28
01, 2026
Short Shots in Injection Molding: Causes and How to Fix Them
Injection molding is a precise and efficient manufacturing process, but it’s not without its challenges. One frequent issue is the short shot—when the molded part isn’t completely filled, resulting...
21
01, 2026
Solving Mold Sticking and Ejection Failures: A Practical Guide
In injection molding, sticking and poor part ejection are common but frustrating issues. While multiple factors can contribute, mold-related problems are often the primary cause. Understanding these c...
13
01, 2026
Causes and Solutions for Weld Lines
The main causes of weld lines are: When molten plastic encounters inserts, holes, areas with discontinuous flow velocity, or interruptions in the mold filling flow within the cavity, multiple streams ...
07
01, 2026
Analysis and Troubleshooting Methods for Sink Marks
Process Control: The Foundation of QualityImproper machine settings are a primary culprit. Here’s what to check:Insufficient Pressure & Time: Low injection pressure, short injection/holding times...
02
01, 2026
Crack Defects in Injection Molded Parts: Analysis and Solutions
Cracks are a common yet critical defect in plastic injection molded parts. They not only compromise the product's aesthetics but, more importantly, its structural integrity and longevity. This pos...
19
12, 2025
Post-Molding Treatments for Plastic Parts
During the injection molding process, internal stress is inevitably introduced into plastic parts due to factors such as uneven plasticization, crystallization, molecular orientation, non-uniform cool...
28
10, 2025
Practical Guide to Injection Molding Parameters for Polypropylene (PP)
Polypropylene (PP) is one of the most versatile and widely used thermoplastics. To achieve optimal results—whether you're molding consumer products, automotive components, or packaging—it's ...
08
10, 2025
Understanding and Solving Flash Defects in Injection Molding
Flash—the thin, unwanted excess of material along mold parting lines or ejector pins—is one of the most common defects in injection molding. Not only does it affect part appearance and dimensions, b...
09
09, 2025
Mold Manufacturing Information Related to Test Molding - Machining
In mold manufacturing, common methods include machining and electrical discharge machining (EDM). Under certain circumstances, both methods may affect the test molding process and leave specific machi...