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General Plastics
General-purpose plastics have good molding processability, mechanical properties and chemical stability. They can be quickly processed through conventional processes such as injection molding, extrusion and blow molding. They are the most basic and largest-volume plastic category in industrial production.
ABS
ABS (Acrylonitrile Butadiene Styrene) is a widely used thermoplastic known for its excellent overall properties. It offers high strength, good toughness, and outstanding impact and chemical resistance, while also being easy to process and finish (e.g., plating, painting).
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PP
PP (Polypropylene) is a lightweight, high-strength thermoplastic known for its excellent chemical resistance, heat resistance, and electrical insulation. It offers high rigidity, good wear resistance, and is easy to process via injection molding or extrusion.
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PE
PE (Polyethylene) is one of the most widely used general-purpose plastics, known for its excellent chemical resistance, electrical insulation, and flexibility. Depending on density, it is categorized into HDPE (High-Density Polyethylene) and LDPE (Low-Density Polyethylene), suitable for rigid packaging/pipes and soft films/plastic bags, respectively.
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PMMA
PMMA (Polymethyl Methacrylate), commonly known as “acrylic glass,” is a highly transparent thermoplastic. With better light transmittance than ordinary glass, it offers excellent weather resistance, impact strength, and processability. Lightweight and easily dyed.
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PVC
PVC (Polyvinyl Chloride) is one of the five major general-purpose plastics, renowned for its excellent corrosion resistance, flame retardancy, and mechanical strength. Depending on plasticizer content, it can be rigid PVC (for pipes/profiles) or flexible PVC (for cables/films).
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PS
PS (Polystyrene) is a versatile transparent plastic known for its excellent clarity, rigidity and dimensional stability. Classified into GPPS (general purpose) and HIPS (high impact) based on production process, it is used in consumer packaging and appliance housings respectively.
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Engineering Plastics
POM
PA
PC
PEEK
PSU
PPO
PET
LCP
PPS
PBT
PET
PI
Rubber Material
PU
IIR
FKM
TPU
NR
VMQ
CR
EPDM
SBR
NBR
TPE
Metal Material
Aluminum
Copper
Carbon
Special Alloy
Stainless Steel
Material Modification
Through methods such as formula optimization, process adjustment, and functional filling, plastic and rubber material modification can significantly enhance key performance indicators such as mechanical properties, weather resistance, wear resistance, and flame retardancy, while reducing costs and expanding application scenarios.
Kehui Mold possesses extensive expertise in this field, mastering advanced modification techniques and a mature formulation system. From demand analysis and material selection to performance testing, we provide end-to-end customized solutions. We have successfully served industries such as automotive, electronics, medical, and industrial components, enabling product upgrades. Our full-chain technical services cover material selection, formulation development, and mass production support.
FAQ Of General Plastics
Visit our FAQ center for more questions.
What is the difference between general plastics (such as PP/PE/ABS) and engineering plastics? How to choose?
General-purpose plastics are known for their low cost and easy processing, and are suitable for common scenarios such as daily necessities and packaging; engineering plastics (such as PA/PC/POM) have higher strength, temperature resistance and wear resistance, but are more expensive and are suitable for harsh environments such as automotive parts and electronic devices. When choosing, you need to consider the cost, performance requirements and usage scenarios comprehensively. We can provide material comparison and selection guidance.
What is the highest temperature that general plastics can withstand? Can it be improved through modification?
The long-term use temperature of ordinary PP/PE is about 80℃ or below, and ABS is about 90℃, but by adding glass fiber, heat-resistant additives, and other modification methods, it can be increased to 120℃ or even higher (such as modified PP for automotive interiors). The specific plan needs to be customized according to your needs. We have mature heat-resistant modification technology cases.
How to address cracking/deformation in general plastics products?
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Material selection issues → Re-select materials based on usage environment (e.g., cold-resistant PP for low-temperature use)
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Process defects → Optimize parameters like injection temperature and holding pressure time
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Stress concentration → Improve product design (e.g., adding rounded transitions)
We provide failure analysis services to develop customized solutions