PTFE Injection Molding

PTFE injection molding delivers unmatched chemical resistance, thermal stability, and low friction properties for high-performance applications.

Erye Offer PTFE Injection Molding Service to Your Specific Needs!

Polytetrafluoroethylene (PTFE), commonly known by the brand name Teflon, is a high-performance fluoropolymer with exceptional chemical resistance, low friction, and high-temperature stability. Unlike conventional thermoplastics, PTFE injection molding requires specialized processing due to its high melting point and non-melt-flow characteristics. With extensive experience in teflon injection molding, we provide high-quality, reliable parts for industries requiring extreme durability, including medical, aerospace, and semiconductor applications.

PTFE Injection Molding Service

Service	Details
Maximum Part Size	2500mm x 2000mm (98 in. x 78 in.)
Recommended Wall Thickness	1.5 mm and 6.0 mm(0.060 to 0.250 inches)
Color Options	Any color according to RAL or Pantone Code
Standard Finishes	SPI and VDI
Mold Ownership	Customer owned with mold maintenance
Mold Life	Unlimited (If the PTFE mold worn out, Erye will cover the cost of new mold)

PTFE Injection Molding Design Guide

Designing injection molded PTFE components requires careful consideration due to the material’s unique properties, such as its high melt temperature, low surface energy, and lack of melt flow. To ensure manufacturability and performance, follow these key design guidelines:

Item	Description
Wall Thickness	Maintain uniform wall thickness (typically 1.5–3 mm) to prevent warping and ensure even sintering.
Draft Angles	Use at least 1–3° draft to facilitate part ejection from the mold.
Undercuts & Sharp Edges	Avoid complex undercuts and sharp internal corners to minimize stress concentrations.
Gate Placement	Position gates strategically to allow even filling and reduce defects like voids or incomplete fills.
Shrinkage Allowance	PTFE has a high shrinkage rate (2–5%), requiring careful compensation in mold design.
Post-Molding Sintering	Sintering at 350–400°C is necessary to achieve full material strength and remove internal stresses.
Tolerance Control	Due to shrinkage, achieving tight tolerances requires secondary machining or precision finishing.

Start Teflon Injection Molding Project

Get high-quality Teflon injection molded parts! Contact with Erye to request a quote!

Advantages of PTFE Material in Molded Parts

Exceptional Chemical Resistance

PTFE resists almost all industrial chemicals, acids, solvents, and corrosive fluids.

Extremely Low Friction

PTFE has one of the lowest coefficients of friction among solid materials. PTFE parts slide smoothly without lubrication.

Excellent High-Temperature Resistance

PTFE can continuously operate around 260°C (500°F). It maintains performance in environments where many plastics fail.

Good Weather and UV Resistance

PTFE handles outdoor exposure extremely well without degrading quickly.

Disadvantages of PTFE Injection Molding

Difficult to Injection Mold

Pure PTFE does not flow like standard thermoplastics during melting. Traditional injection molding machines usually cannot process virgin PTFE effectively.

Very High Material and Processing Cost

PTFE resin is much more expensive than common injection molding plastics, and specialized equipment and secondary sintering processes increase manufacturing costs.

Tight Processing Control Required

PTFE processing involves careful temperature management and sintering cycles to avoid defects.

PTFE Injection Molding Application

Industrial & Chemical

Valve seats and seals
Chemical-resistant gaskets
Pump housings and diaphragms
Corrosion-resistant pipe fittings

Electronics

High-voltage insulators
Microwave and RF components
Semiconductor wafer carriers
Precision electrical connectors

Medical & Healthcare

Surgical instrument components
Catheter liners and guidewire coatings
Biocompatible tubing and seals
Non-stick medical trays and containers

Food Processing

FDA-compliant non-stick coatings
Food-grade valve components
Heat-resistant conveyor belts
Low-friction kitchenware components

Additonal Options for PTFE Parts

What Exactly is PTFE Plastic?

Polytetrafluoroethylene (PTFE) is a high-performance fluoropolymer known for exceptional chemical resistance, ultra-low friction, non-stick properties, and a wide operating temperature range. PTFE is commonly used for seals, gaskets, valve seats, bushings, insulators, and fluid handling components where conventional plastics cannot meet harsh operating requirements.

MATERIAL

PTFE

POLYTETRAFLUOROETHYLENE

THERMOPLASTIC

MATERIAL FAMILY HIGH-PERFORMANCE FLUOROPOLYMER

DENSITY 2.14-2.20 g/cm³

SHRINKAGE RATE 3.0%-5.0%

TENSILE STRENGTH 20-35 MPa

WORKING TEMPERATURE -200°C to 260°C

COEFFICIENT OF FRICTION 0.05-0.10

KEY CHARACTERISTICS

Chemical Resistance Low Friction Non-Stick Surface Electrical Insulation

Case Study

Case Study of Automotive Car Dashboard Molding

Learn how we helped an automotive client develop a custom injection mold for a car dashboard. From material selection to mold design, we delivered a complete solution for automotive industry!