Injection molding problem: plastic delamination and peeling
author: Universe plastic
2024-03-09
Injection molding plastic delamination and peeling is a common injection molding problem. It refers to the phenomenon of delamination or peeling on the surface or inside of plastic products after injection molding. Delamination and peeling will seriously reduce the appearance and performance of the product.
There may be many reasons for delamination, including problems with the material itself, improper processing conditions, and unreasonable mold design. Here are some reasons and solutions shared by Universe Plastics Engineers:
Causes of delamination of injection molded plastics
1. Material incompatibility
When different types of plastic materials are mixed, delamination may occur if the compatibility between the materials is poor.
2. Material humidity is too high
Plastic materials are not fully dried before processing, resulting in excessive moisture content and affecting the material's adhesive properties.
3. Incorrect injection molding process parameters
Improper setting of injection molding pressure, temperature, speed and other process parameters may result in insufficient fusion of materials in the mold.
4. Mold design issues
Unreasonable mold design, such as improper flow channel design, poor exhaust, etc., may lead to poor fluidity of the material, leading to delamination and peeling.
Solve and prevent delamination of injection molded plastics
1. Choose materials with good compatibility
Make sure the plastic materials used are chemically compatible to avoid delamination and peeling between materials.
2. Material drying treatment
Dry the material fully before processing to reduce the moisture content in the material and improve the bonding properties of the material.
3. Optimize injection molding process parameters
According to the material characteristics and product requirements, adjust the injection molding process parameters, such as appropriately increasing the injection temperature, pressure and speed, to ensure that the material can be fully integrated in the mold.
4. Improve mold design
Optimize the mold flow channel design to ensure the fluidity of the material in the mold; add vents to discharge air during the injection molding process and prevent material delamination.
Summarize
Only by strictly controlling the quality of raw materials, optimizing injection molding process parameters and improving mold design can we effectively avoid the occurrence of plastic delamination and peeling problems and ensure product quality and performance.
Dongguan Universe Plastic Factory has more than 15 years of injection molding experience, a professional team and advanced injection molding machine equipment, high-quality and stable material supply channels, and can provide high-quality and cost-effective injection molding plastic manufacturing services.
If you are choosing a high-quality injection molding factory, please contact us to get the latest service quotation.
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