6 technical key points for making high-quality plastic injection molding

Plastic injection molding is a highly complex manufacturing process, the success of which depends on a number of key factors The following are six technical highlights for plastic injection molding:
 

Good quality Key 1: Material selection

The selection of suitable plastic raw materials is the basis for guaranteeing the performance of the final product.
Materials are selected according to conditions such as the product’s use environment, mechanical requirements and chemical tolerance.
Various plastic materials possess different physical characteristics and processing properties, which have a huge impact on the injection molding process and finished product quality.
The fluidity, coagulation, thermal stability and melt index of the material need to be accurately evaluated, and insufficient thermal stability may lead to product defects.
Before injection molding, the material characteristics should be comprehensively evaluated and rationally selected to ensure the quality and application performance of the finished product.
 

Good quality Key 2: Dryness of plastic raw materials

The degree of dryness of the plastic raw material is crucial to the injection molding process and the quality of the finished product.
Inadequately dried materials may release moisture during the heating process, leading to defects such as bubbles and short shots, and affecting the physical properties of the finished product, such as tensile strength and impact strength.
The recommended drying time is 48 hours and the drying temperature is adjusted according to the properties of the material (usually 60120°C) to avoid incomplete drying of the material due to high temperature melting.
 

Good quality focus 3: Mold design

Mold design is key to ensuring product precision, appearance quality and production efficiency.
Cooling system design: Affects the curing speed and production efficiency of the product.
Flow channel design: Controls plastic filling speed and pressure distribution to avoid defects such as air bubbles and short shots.
Mold structure: Directly affecting the life and cost of the mold, the material needs to have high strength and wear resistance.
Good mold design improves production efficiency and reduces product deformation and defects.
 

Good quality focus 4: Process parameter control

control of the process parameters of injection molding is critical to product quality.
Injection pressure and velocity: Affect the integrity of plastic-filled molds.
Pressure retention and cooling time: Ensure the product is sufficiently cured to avoid dimensional errors or surface roughness.
Mold temperature control: affects the fluidity of the material and the appearance quality of the finished product.
Through precise setting and real-time regulation of parameters, product consistency and production efficiency can be significantly improved.
 

Good Quality Focus 5: Operator Skills

Skilled operators have a direct impact on the success of injection molding.
Equipment operation proficiency: Ensure the stability of the production process and reduce defects caused by incorrect equipment settings.
Problem Solving Ability: Ability to quickly judge and rule out abnormal situations in the production process.
Safe operating regulations: Compliance with operating procedures reduces the risk of production accidents.
Regular education and training (such as equipment operation, safety regulations, etc.) can further improve production efficiency and safety.
 

Good Quality Focus 6: Quality Control

Strict quality control is at the heart of ensuring that finished products meet specifications and customer needs.
Raw material testing: Ensure the use of stable, high quality materials.
Production process monitoring: real-time detection of ejection parameters to avoid the generation of defective products.
Finished product inspection: trace the root cause of the problem and make timely improvements to ensure production stability.
We follow ISO 9001 quality control system and ISO 22000 food container production regulations to continuously improve product quality and meet customer needs.

conclusion
The key to success in plastic injection molding lies in: correct material selection, adequate drying of raw materials, sophisticated mold design, precise process parameter control, improved operator skills and strict quality control.