Polyethylene Injection Molding

We specialize in Polyethylene PE injection molding, delivering lightweight, impact-resistant, and flexible parts with excellent chemical resistance.

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Erye Offer Polyethylene Injection Molding Service Specific to Your Needs!

Polyethylene injection molding is ideal for producing flexible, lightweight, and impact-resistant parts. With excellent chemical resistance and processability, PE is commonly used for applications requiring durability and elasticity. However, its low rigidity and tendency to shrink require precise molding techniques to ensure dimensional stability and performance.

Polyethylene Injection Molding Design Guide

PE’s flexibility, low stiffness, and high shrinkage require special design considerations to ensure structural integrity and manufacturability.

Item	Description
Wall Thickness	Maintain a uniform wall thickness between 0.8 – 3.0 mm to prevent warping and ensure even cooling.
Rib and Boss Design	Use ribs at 40-60% of the main wall thickness to reinforce the structure without introducing sink marks.
Draft Angles	Apply a draft angle of 1.5° – 3° to prevent sticking and facilitate ejection from the mold.
Shrinkage Compensation	Account for PE’s high shrinkage rate of 1.5 – 3.5%, adjusting dimensions accordingly.
Corner Radius	Avoid sharp corners by using a minimum fillet radius of 0.5 times the wall thickness to reduce stress concentration.

Advantages of Choosing ABS Molding

Superior Flexibility & Softness

PE is highly elastic and does not break easily under stress, making it ideal for squeeze bottles, snap-fit lids, and living hinges that require repeated bending without cracking.

Low-Temperature Toughness

Unlike many plastics, PE retains its impact strength even at sub-zero temperatures, making it suitable for freezer applications and outdoor products exposed to cold environments.

Non-Toxic & FDA-Approved Options

Many PE grades are safe for direct food and beverage contact, making them ideal for food containers, baby products, and pharmaceutical packaging.

High Processability & Flowability

PE's low viscosity allows it to fill molds efficiently, producing complex shapes with thin walls and intricate details while minimizing defects like warping.

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Injection Molded Polyethylene Application

Industrial & Automotive

Cable insulation covers
Protective end caps
Flexible automotive seals

Packaging & Consumer Goods

Squeeze bottles
Caps and lids
Flexible food containers
Cosmetic packaging

Medical & Healthcare

Dropper bottles
Tubing connectors
Medical squeeze tubes

Agriculture Equipment

Drip irrigation components
Soft tool grips
Weather-resistant covers

Additonal Options for Polyethylene Parts