Plastic Injection Molding

Plastic Injection Molding Samples




Plastic injection molding equipment list
Machine Name | Specification | Quantity (set/piece) |
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Plastic injection molding machines | 1600ton (10000g) | 1 |
800ton (2800g) | 1 | |
500ton (1800g) | 1 | |
250ton (510g) | 2 | |
125ton (200g) | 3 | |
80ton (100g) | 2 | |
Ultrasonic welding | Power: 2000W; Frequency: 20KHZ | 1 |


Commonly used plastic resin
PVC | HDPE |
Acrylic (PMMA) | LDPE |
PC (Polycarbonate) | PBT |
ABS (Acrylonitrile Butadiene Styrene) | PEEK (Polyetheretherketone) |
Nylon | PET (Polyester) |
PETG | PP (Polypropylene) |
HIPS (Polystyrene) | PPS (Polyphenylene sulfide) |
Polysulfone | POM (acetal) |
Plastic injection molding technical data and secondary operations
Rib thickness and rib height | Rib thickness is recommended to be 60% to 80% of nominal wall thickness; Rib height is recommended to be 3-4 times of nominal wall thickness | ||||||||||||||||||
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Plastic injection mold draft | 0.5 -2 degree for the wall side which shrinks onto the mold in part releasing | ||||||||||||||||||
Plastic injection molded part wall thickness consideration | Uniform wall thickness is recommended to reduce Sink marks, Residual stresses, Voids, Warpage. 0.06″ – 0.16″ is considered to be normal wall thickness range. | ||||||||||||||||||
Plastic injection mold construction |
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Normal lead time | Tooling and sample: 3 weeks – 5 weeks. Complicated parts take longer. | ||||||||||||||||||
Secondary operations |
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Engineering assistance

- CAD model development from your sample;
- Stress analysis, which helps in knowing whether the design is adequate and optimized, and what changes are needed before the physical part is made;
- Some Mechanical and Chemical Lab tests for your prototype part.