Plastic Injection Molding

Founded in 1978, Zhongde is a professional injection molding supplier focusing
on OEM & ODM customized services. Based on 40 years technology deposition, we
have developed a one-stop solution from mold designing and rapid prototyping to
mass production. Our manufacturing capabilities include plastic injection
molding service, compression molding service, CNC machining service, metal
stamping service, 3D printing service, custom molding service,etc.

Plastic injection mold and molding is the most common manufacturing process for
the fabrication of large quantities of plastic parts. As an ideal method to
producing high volumes plastic parts in the same shape, Plastic custom moulding
can be used to create various of plastic parts, which vary greatly in size,
complexity and application. Almost every plastic item around you was
manufactured by injection molding.

The precision plastic injection molding at Zhongde is a standard process
involving a stainless steel mold, it can be divided into six stages: mold
clamping, injection molding, pressure holding, cooling, mold opening, and
product removal. At a certain temperature, the completely melted plastic
material is stirred by a screw, injected into the mold cavity with high
pressure, then cooled and solidified into the final plastic molded parts.Now
the plastic injection price is pretty proper.


Guideline of Plastic Injection Molding

Size of Plastic Injection Molding

Below table shows the size of Plastic Injection Molding parts we usually make.
If you need a larger size, we can also help you achieve it.

Size Metric Inch
Length 2500 98.4
Width 2000 78.7
Height 1500 59

Available Material of Plastic Injection Molding

In addition to the general materials listed below, Zhongde can also modify the
materials according to the special needs of customers. Our professional
engineers will adjust the raw material formula to meet the unique conditions of
use.

ABS Acrylonitrile Butadiene Styrene

PA 6 Polyamide 6, Nylon 6

PA 6/6 Polyamide 6/6, Nylon 6/6

POM Acetal Polyoxymethylene, Delrin

PP Polypropylene

PE Polyethylene

LDPE Low-Density Polyethylene

HDPE High-Density Polyethylene

UHMWPE Ultrahigh Molecular Weight Polyethylene

PTFE Polytetrafluoroethylene

PEEK Polyether Ether Ketone

PC Polycarbonate

PMMA Polymethyl Methacrylate, Acrylic

PS Polystyrene

PVC Polyvinyl Chloride (Shore D)

PU Polyurethane



Additives of Plastic Injection Molding

Name Description
UV absorbers Absorb UV radiation, slowing down the degradation of the
material when used outdoors.
Flame retardants Prevent ignition and inhibits spread of fire.
Plasticizers Increase flexibility and promotes plasticity, reducing
brittleness of the material.
Colorants Used to color plastics.
Carbon fibers Increase strength, toughness, and rigidity of the material at
the expense of making the material more brittle.
Glass fibers Increase strength, toughness, and rigidity of the material at
the expense of making the material more brittle. It is more flexible than
carbon fibers.


Surface Finishing of Plastic Injection Molding

Name Description
Glossy The mold is smoothed and then polished with a diamond buff, resulting
in parts with a mirror-like finish.
Semi-gloss The mold is smoothed with fine-grit sandpaper, resulting in
parts with a fine surface finish.
Matte The mold is smoothed using fine stone powder, removing all machining
marks.
Textured finish The mold is first smoothed with fine stone powder and then
sandblasted, resulting in a textured surface.
As-machined finish The mold is finished at the machinist's discretion.
Tool marks may be visible.

Minimum Order: 100 pieces

Click to Enlarge