11 Plastic Materials Guide for Injection Molding Professionals
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Most Wear-resistant Plastic | POM
High shrinkage rate and prone to burning. Low temperature and low speed molding is recommended. Widely used for automotive precision buckles, gears and wear-resistant parts.
Highest Impact Resistance Plastic | PC
Strong moisture absorption. Cracks easily without proper drying. Suitable for helmets, protective housings and high-strength transparent components.
Most Corrosion-resistant Plastic | PPS
High hardness and tends to wear screws. High temperature and acid & alkali resistant, ideal for precision parts under corrosive conditions.
Highest Light Transmittance Plastic | PMMA
Bubbles and silver streaks easily occur during processing. Slow molding with sufficient venting required. Clear finished parts, commonly used for optical lenses and decorative panels.
Most Flexible Plastic | TPR
Prone to sticking to mold and cracking. Low-pressure and low-speed injection molding. Applied for soft grips, elastic toys and sealing parts.
Most Prone to Warpage Plastic | LCP
Thin-wall products deform easily. Precise control of process parameters to maintain stable dimensions for tiny electronic components.
Highest Temperature Resistant Plastic | PEEK
High-end special engineering plastic, easy to degrade under high heat. Widely adopted in medical and aerospace core components.
Best Cost-performance Plastic | PP
High shrinkage, poor toughness at low temperature. Outstanding cost advantage for mass production, preferred for daily goods and packaging parts.
Heat-sensitive & Decomposable Plastic | PVC
Easy to carbonize and corrode screws at high temperature, narrow processing temperature window. Strict temperature control for cable sheaths and pipes.
Hardest-to-mold Plastic | PI
Easy to crack during demolding, high threshold for formulation and processing. Used for high-end high-temperature resistant precision components.
High-strength Structural Plastic | PA66+GF
Dimension fluctuates with moisture absorption, sufficient drying required. Excellent rigidity and fatigue resistance, widely used for load-bearing parts in automobiles and electrical appliances.
Each plastic has its exclusive formulation and molding process! Master material characteristics to avoid troubles in injection molding production.
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