HDPE material at YiguProto
HDPE machined or molded by YiguProto

Material

HDPE — Injection Molding Materials

HDPE is a tough, chemical-resistant plastic. We mold it into safe, repeatable parts with injection molding.

Overview

What Is HDPE Injection Molding?

HDPE is a tough, chemical-resistant plastic. We mold it into safe, repeatable parts with injection molding.

Material: HDPE

HDPE (High-Density Polyethylene) is a tough plastic. It resists chemicals and impact and is often food-safe.

Process: Injection Molding

We melt plastic resin and inject it into a steel mold to form identical parts.

Result: Repeatable Plastic Parts

High-volume parts with consistent size and finish, made to your drawing.

Material

HDPE — Injection Molding Materials

HDPE is a tough, chemical-resistant plastic. We mold it into safe, repeatable parts with injection molding.

Overview

What Is HDPE Injection Molding?

HDPE is a tough, chemical-resistant plastic. We mold it into safe, repeatable parts with injection molding.

Material: HDPE

HDPE (High-Density Polyethylene) is a tough plastic. It resists chemicals and impact and is often food-safe.

Process: Injection Molding

We melt plastic resin and inject it into a steel mold to form identical parts.

Result: Repeatable Plastic Parts

High-volume parts with consistent size and finish, made to your drawing.

Specifications

HDPE Engineering Data

Typical reference values for HDPE through injection molding. Final numbers can vary with grade and part shape.

PropertyTypical Value
Material typeHDPE (polyethylene)
Manufacturing processInjection Molding
Density0.94–0.97 g/cm³
Tensile strength20–35 MPa
Service temperature−40 to 80 °C
Standard finishesAs molded, texturing

Values are typical reference data and may vary with grade, heat treatment, and part geometry. Tell us your needs and we will confirm exact specs.

Why HDPE

Why Choose HDPE for Injection Molding

Tough & Impact Resistant

Absorbs knocks without cracking.

Chemical Resistant

Stands up to acids, bases, and solvents.

Low Friction

Slippery surface good for wear strips.

Food-Safe (grade)

Approved grades suit bottles and containers.

Material Options

HDPE Grades & Options

We stock common grades. Tell us your need and we will pick the right one.

Blow-Molding Grade

For bottles and hollow shapes.

Injection Grade

For caps, bins, and rigid parts.

Pipe Grade

For pressure and drainage pipe.

How It Works

How We Make Your HDPE Part

From your file to a finished part in five clear steps. Start with a free quote.

Send Files & Get a Quote

Upload your 3D file and drawings. Get a quote with free DFM feedback, usually within 24 hours.

Design Review (DFM)

Our engineers check wall thickness, draft, and gates. We suggest changes that cut cost.

Mold Design & Making

We design and build the steel mold that shapes your part.

Injection & Cooling

We melt the resin and inject it into the mold, then cool and eject the part.

Inspect & Ship

We check dimensions and quality, then pack and ship worldwide.

Applications

Where HDPE Is Used

Bottles & Caps

Closures and containers for many liquids.

Crates & Containers

Durable bins and tubs for logistics.

Pipes & Fittings

Plumbing and drainage parts.

Toys & Medical

Safe, smooth parts for daily use.

Design Tips

Easy Design Tips for Beginners

New to this process? These simple rules help your part turn out well and cost less.

Keep Walls Uniform

Use a steady wall thickness so the part fills evenly and warps less.

Add Draft Angles

A small draft (1–2°) on vertical faces helps the part release from the mold.

Plan for Shrinkage

Plastics shrink as they cool. We size the mold to land on your final dimensions.

Finishes

Surface Finishes for HDPE Parts

As Molded

The natural molded surface straight from the tool. Lowest cost.

Painting

A custom color coat for branding or looks.

Texturing

A matte or patterned surface for grip or style.

Clear Coat

A glossy protective layer for a premium look.

Why YiguProto

A Trusted Manufacturing Partner

We are a dedicated factory for injection molding. Every file is reviewed by engineers before production. Every part is inspected before shipping. Your designs stay private with us.

< 24h
Quote turnaround
No MOQ
One part or thousands
±0.005 mm
CNC tolerance
Free
DFM design review

FAQ

HDPE — Frequently Asked Questions

HDPE (High-Density Polyethylene) is a tough plastic. It resists chemicals and impact and is often food-safe.
Injection molding melts plastic resin and injects it into a steel mold. It makes identical parts in high volume at low unit cost.
HDPE is a tough, light plastic. It resists chemicals and impact and is often approved for food contact.
HDPE is tough and flexible rather than hard. It reaches about 20–35 MPa tensile strength, enough for everyday parts.
Send us your files. Most quotes return within a few hours on workdays. We never take more than 24 hours.
There is no strict minimum. We make a single prototype or a full production run.
Yes. We treat all files and ideas as confidential. We sign NDAs when you need them.
Yes. Our engineers review your design and suggest changes that cut cost, improve quality, or speed up delivery.
As-molded, texturing, painting (limited), and printing.
Yes — molded parts hold typical ±0.1–0.2 mm. We can post-machine key features for tighter needs.
Yes. We can make samples for your approval. The sample cost is credited back on a production order.

Ready to Make Your HDPE Part?

Send your 3D file and get a factory-direct quote with free DFM feedback within 24 hours.

Get a Quote Or email sales@yiguproto.com