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HDPE Injection Molding

PREMIUM HDPE PROCESSING

HDPE Injection Molding Services

Rapidaccu specializes in high-density polyethylene (HDPE) injection molding from our advanced manufacturing facility in Shenzhen, China. With 15 years of expertise, we deliver robust, chemical-resistant plastic components for global industries.

Years

Experience

Superior

Durability

Global

Export

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HDPE Material Advantages

Exceptional properties for demanding applications

Chemical Resistance

Outstanding resistance to acids, alkalis, solvents, and corrosive chemicals for harsh environment applications.

Impact Strength

Exceptional impact resistance even at low temperatures, ensuring durability in demanding conditions.

Moisture Resistant

Extremely low water absorption rate maintaining dimensional stability in wet environments.

Lightweight Design

Low density material reduces product weight while maintaining structural integrity and strength.

Eco-Friendly

100% recyclable material supporting sustainable manufacturing and environmental responsibility.

Cost-Effective

Economical material with excellent performance-to-cost ratio for high-volume production.

Advanced Manufacturing

State-of-the-art HDPE processing technology

Precision HDPE Processing

Located in Rongli Industrial Park, Dalang, Longhua District, Shenzhen, China, our facility operates cutting-edge injection molding equipment specifically optimized for HDPE materials. We control every parameter to ensure consistent quality and performance.

100-1500T

Machine Range

50-10000g

Shot Weight

±0.05mm

Precision

99.8%

Pass Rate

HDPE Injection Molding Process

Professional workflow ensuring optimal results

Material Selection

Selection of appropriate HDPE grade based on application requirements including density, melt flow index, and additive packages for UV protection, color, or flame retardancy.

Heating Phase

HDPE pellets heated to optimal processing temperature (180-280°C) with precise temperature zones ensuring uniform melt consistency and optimal flow characteristics.

Injection & Packing

Molten HDPE injected into mold cavity under controlled pressure and speed, followed by packing phase to compensate for material shrinkage during cooling.

Cooling & Ejection

Controlled cooling ensures proper crystallization and dimensional stability. Parts ejected when fully solidified and inspected for quality compliance before packaging.

HDPE Applications Across Industries

Packaging Industry

Bottles, containers, caps, closures, and food-grade packaging requiring FDA compliance and barrier properties.

Beverage bottles
Chemical containers
Food storage

Automotive Parts

Fuel tanks, air ducts, battery cases, and interior components demanding chemical resistance and durability.

Fuel system components
Under-hood parts
Interior trim

Construction Materials

Pipe fittings, electrical boxes, outdoor furniture, and building components requiring weather resistance.

Plumbing fittings
Electrical enclosures
Outdoor products

Consumer Products

Toys, household items, sporting goods, and consumer electronics housing requiring safety and durability.

Household goods
Sporting equipment
Children’s products

Technical Specifications

Material Properties

Density 0.94-0.97 g/cm³

Melting Point 120-135°C

Tensile Strength 26-33 MPa

Elongation at Break 10-1200%

Water Absorption <0.01%

Shore Hardness D 60-70

Processing Parameters

Barrel Temperature 180-280°C

Mold Temperature 20-60°C

Injection Pressure 50-150 MPa

Shrinkage Rate 1.5-3.5%

Drying Required No

Cycle Time 20-60 seconds

Why Rapidaccu for HDPE Molding

15 Years Experience

Extensive expertise in HDPE processing for international markets with proven results.

Advanced Equipment

State-of-the-art injection molding machines with precision control systems.

Quality Assurance

Comprehensive inspection protocols ensuring consistent product excellence.

Global Export

Proven track record serving customers worldwide with reliable service.

Frequently Asked Questions

What are the key advantages of HDPE for injection molding?

HDPE offers excellent chemical resistance, high impact strength, low moisture absorption, and recyclability. It’s lightweight, cost-effective, and suitable for both indoor and outdoor applications requiring durability.

Does HDPE require drying before molding?

No, HDPE is non-hygroscopic and does not require pre-drying. However, stored material should be kept clean and free from contamination to ensure optimal processing and product quality.

What tolerances can be achieved with HDPE molding?

Typical tolerances range from ±0.05mm to ±0.2mm depending on part size and geometry. HDPE has higher shrinkage (1.5-3.5%) compared to other plastics, requiring careful mold design and process control.

Is HDPE suitable for food contact applications?

Yes, food-grade HDPE meets FDA regulations for direct food contact. We use certified food-grade resins and maintain clean room standards for packaging and food storage applications.

Can HDPE parts be welded or bonded?

Yes, HDPE can be welded using hot air, ultrasonic, or hot plate welding methods. However, adhesive bonding is challenging due to low surface energy. Surface treatment may be required for adhesion.

What is the minimum order quantity for HDPE molding?

MOQ depends on part complexity and tooling investment. We accommodate prototype quantities for testing and scale up to high-volume production runs of millions of parts annually.