— PVC 射出成型

PVC Injection Molding

Heating PVC pellets, injecting them into a mold under high pressure, and cooling to form products, suitable for flexible, chemical-resistant, and colorful plastic items.

Mass ProductionCost-EffectiveComplex ShapesFlexible DurabilityVersatile Colors

— Cost

Medium

— Lead Time

Sample 7-15 days (after mold completion) · Production 15-30 days

— Suggested MOQ

500+

— Materials

5 types

What is it

PVC injection molding is a manufacturing process where Polyvinyl Chloride (PVC) plastic pellets are heated until molten, then injected under high pressure into a precise mold. After cooling and solidification, the mold opens to eject the finished product. This process can produce products ranging from soft to rigid, offering flexibility, chemical resistance, and excellent electrical insulation. Its high efficiency and ability to accurately replicate mold details make it an ideal choice for mass production of complex, consistent quality plastic items.

Best for

Soft PVC Keychains
Character Figurines
Wire Sleeves
Medical Tubing
Automotive Interior Parts
Sports Equipment Grips

Materials

Soft PVC
Rigid PVC
Transparent PVC
Medical-Grade PVC
Flame-Retardant PVC

Advantages

High-efficiency mass production, capable of hundreds to thousands of pieces per hour per mold.
High dimensional stability, with tolerances up to ±0.05 mm, excellent detail reproduction.
Capable of producing complex shapes, including undercuts or multi-cavity structures.
Excellent chemical resistance, weatherability, and electrical insulation properties.
Achieves rich colors and adjustable hardness through masterbatch additives.
Long mold lifespan, capable of hundreds of thousands of injection cycles.

Limitations

High mold development cost, generally suitable for orders with MOQ of 500-1000 pieces or more.
PVC material may release chlorine gas during processing, requiring good ventilation.
Overly large product dimensions or uneven wall thickness can lead to shrinkage and deformation.
Some soft PVC products may contain plasticizers, requiring compliance with relevant environmental regulations.

Frequently Asked Questions

What is the minimum order quantity (MOQ) for PVC injection molding?+

Due to the mold development costs involved, the recommended MOQ for injection molding is typically 500-1000 pieces. For quantities below this, the per-unit cost will significantly increase, making it less economical. We will provide specific recommendations based on product complexity and size.

How durable are PVC injection molded products?+

PVC products are highly durable, offering excellent abrasion resistance, chemical corrosion resistance, and weatherability. Rigid PVC can be used for structural components, while soft PVC provides flexibility and impact resistance. Under normal use, product lifespan can extend for several years.

What is the difference between PVC injection molding and general plastic injection molding?+

PVC injection molding is a specific type of plastic injection molding that uses PVC material. General plastic injection molding refers to the use of various thermoplastic materials such as PP, PE, ABS, etc. Due to its unique chemical structure, PVC has slightly different processing temperatures and equipment requirements compared to other plastics, but the basic principle remains the same.

What colors can be produced with PVC injection molding?+

PVC injection molding can produce a very wide range of colors. By adding different types and proportions of color masterbatches, almost any Pantone color can be achieved. It can also produce transparent, translucent, or fluorescent effects.