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Technical Parameters

Introduction Of Injection Molding

Injection molding is a manufacturing process used to produce parts by injecting molten material into a mold cavity under high pressure. It is commonly used for creating parts made from plastics, metals, or rubber.

Here's how the process works:

1. Material Preparation: The raw material (usually plastic pellets) is fed into a barrel where it is melted using heat and mechanical pressure.

2. Injection: The molten material is injected into a mold cavity at high pressure using a screw or plunger.

3. Cooling: Once injected, the material cools and solidifies inside the mold to take the shape of the cavity.

4. Ejection: After cooling, the mold is opened, and the part is ejected. The part may require further post-processing, such as trimming or finishing.

Common Materials Used in Injection Molding

1. Thermoplastics

Thermoplastics are the most commonly used materials in injection molding because they can be melted and reshaped multiple times without significant degradation.

ABS (Acrylonitrile Butadiene Styrene): Strong, impact-resistant, and easy to mold.

Common applications: Automotive parts, consumer electronics, and toys (e.g., LEGO bricks).

PP (Polypropylene): Lightweight, chemical-resistant, and flexible.

Common applications: Containers, packaging, and automotive parts.

PE (Polyethylene): Durable, moisture-resistant, and cost-effective.

Common applications: Bottles, storage tanks, and liners.

PC (Polycarbonate): High strength, optical clarity, and heat resistance.

Common applications: Lenses, medical devices, and electronics.

Nylon (Polyamide): Excellent mechanical strength, wear resistance, and low friction.

Common applications: Gears, bearings, and industrial parts.

PS (Polystyrene): Lightweight and easily molded.

Common applications: Disposable cutlery, containers, and packaging.

POM (Polyoxymethylene or Acetal): High stiffness, dimensional stability, and low friction.

Common applications: Precision parts like gears and fasteners.

PET (Polyethylene Terephthalate): Strong, lightweight, and recyclable.

Common applications: Bottles, food containers, and mechanical parts.

2. Thermosetting Plastics

These materials harden permanently after being heated and shaped, making them ideal for high-heat or high-strength applications.

Epoxy Resins: High chemical resistance and mechanical strength.

Common applications: Electrical components and adhesives.

Phenolic Resins: Excellent heat resistance and electrical insulating properties.

Common applications: Circuit boards and heat-resistant components.

Urea Formaldehyde and Melamine Formaldehyde: Hard, scratch-resistant, and durable.

Common applications: Electrical fittings and kitchenware.

3. Elastomers (Rubber-like Plastics)

Elastomers are used for applications requiring flexibility and elasticity.

TPU (Thermoplastic Polyurethane): Flexible, abrasion-resistant, and durable.

Common applications: Seals, gaskets, and footwear.

TPE (Thermoplastic Elastomer): Combines the properties of rubber and plastic.

Common applications: Soft grips, over-molded parts, and seals.

Silicone Rubber: High-temperature resistance and flexibility.

Common applications: Medical devices, kitchenware, and seals.

Advantages Of Injection Molding

• High Production Speed: It’s a fast process, making it ideal for mass production.

• Precision: It can produce highly detailed and complex parts with tight tolerances.

• Consistency: Parts made through injection molding are generally uniform in size and quality.

• Low Waste: Excess material is often reused, making the process more efficient and cost-effective.

Support and Services

Selection Hardware provide custom injection molding services, expert engineering support, and detailed consultations to ensure your specifications are met. Our capabilities include DFM feedback and fast turnaround times for low and high volume production runs. Selection Hardware produce parts ranging in size from less than a gram up to 500 grams. We can use a variety of materials including thermoplastics, elastomers, and we can produce complex parts with overmolding, and insert molding.

Shenzhen Selection Hardware Technology Co., Ltd. offers professional injection molding services, delivering high-quality, precise, and cost-effective solutions for various plastic components. With over 17 years of experience and cutting-edge equipment, we cater to diverse industries with a commitment to quality and efficiency.

Key Features of Our Injection Molding Services

1. Material Expertise:

   • We work with a wide range of thermoplastics and thermosetting polymers, including ABS, PP, PC, PE, PVC, Nylon, and more.
   • Specialized materials such as high-performance engineering plastics for critical applications.

2. High Precision and Versatility:

   • Advanced injection molding machines ensure tight tolerances and consistent production quality.
   • Capable of producing small, intricate parts as well as larger, complex components.

3. Custom Molding Solutions:

   • Support for prototyping, small batch production, and large-scale manufacturing.
   • Tailored designs based on 3D CAD files, technical drawings, or samples.

4. Value-Added Services:

   • Secondary operations such as ultrasonic welding, printing, painting, assembly, and packaging.
   • Surface treatments like texture finishing, polishing, and coating.

5. One-Stop Manufacturing:

   • From tooling design and production to assembly and shipping, we provide end-to-end services.

FAQ

Q1: Are you trade company or manufacturer?

A1: We are professional manufacturer with over 17 years' experience, we have self-operated factories, welcome to visit our factories.

Q2:Do you offer OEM or ODM business?

A2: Yes. OEM and ODM are our main business.

Q3:What services do your company offer?

A3: One-stop metal/plastic fabrication service. Main processing: cnc machining, die casting, investment casting, sheet metal fabricaiton, injection molding.

Q4: Can you help assembling the parts after it is manufactured?

A4: Yes. Our factory has multiple assembling lines.

Q5: What is the price of our product?

A5: The price is depend on your projects. Typically, our prices are competitive.

Q6: What is the delivery time?

A6: Usually 7~15 working days for sample, 30 working days for mass production.

Q7: Will my drawing or other documents be safe after you get it?

A7: Yes. We can sign confidential aggrement for all your projects