Material
LDPE is a soft, flexible plastic. We mold it into light, chemical-resistant parts with injection molding.
Overview
LDPE is a soft, flexible plastic. We mold it into light, chemical-resistant parts with injection molding.
LDPE (Low-Density Polyethylene) is a soft, flexible plastic. It resists chemicals and moisture and is easy to mold.
We melt plastic resin and inject it into a steel mold to form identical parts.
High-volume parts with consistent size and finish, made to your drawing.
Specifications
Typical reference values for LDPE through injection molding. Final numbers can vary with grade and part shape.
| Property | Typical Value |
|---|---|
| Material type | LDPE (polyethylene) |
| Manufacturing process | Injection Molding |
| Density | 0.91–0.94 g/cm³ |
| Tensile strength | 8–20 MPa |
| Service temperature | −50 to 60 °C |
| Standard finishes | As 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 LDPE
Bends and squeezes without breaking. Good for lids and liners.
Stands up to acids, bases, and solvents.
Blocks water and vapor. Ideal for packaging.
One of the cheapest, safest plastics.
Material Options
We stock common grades. Tell us your need and we will pick the right one.
The standard, low-cost grade.
Clearer film and parts.
For outdoor and long-life use.
How It Works
From your file to a finished part in five clear steps. Start with a free quote.
Upload your 3D file and drawings. Get a quote with free DFM feedback, usually within 24 hours.
Our engineers check wall thickness, draft, and gates. We suggest changes that cut cost.
We design and build the steel mold that shapes your part.
We melt the resin and inject it into the mold, then cool and eject the part.
We check dimensions and quality, then pack and ship worldwide.
Applications
Films, liners, and flexible containers.
Soft, snap-fit lids and seals.
Moisture barriers and soft seals.
Safe, squeezable parts for daily use.
Design Tips
New to this process? These simple rules help your part turn out well and cost less.
Use a steady wall thickness so the part fills evenly and warps less.
A small draft (1–2°) on vertical faces helps the part release from the mold.
Plastics shrink as they cool. We size the mold to land on your final dimensions.
Finishes
The natural molded surface straight from the tool. Lowest cost.
A custom color coat for branding or looks.
A matte or patterned surface for grip or style.
A glossy protective layer for a premium look.
Why YiguProto
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.
FAQ