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Plastic Injection Molding
Plastic Injection Molding

Plastic Injection Molding

Insert molding
Insert molding

Insert molding

Overmolding
Overmolding

Overmolding

Liquid silicone rubber molding

Liquid silicone rubber molding

Our custom injection molding services
Our custom injection molding services

Our custom injection molding services

Plastic Injection Molding Service

Injection molding is a manufacturing process that consists of filling a metal mold cavity with liquid plastic resin, which then cools and forms a plastic part.

Insert molding

A manufacturing process in which a part is molded around a pre-installed insert in the tooling.

Overmolding

A manufacturing process in which one plastic material is molded over another to create a single component.

Liquid silicone rubber molding

Athermoset process that involves mixing a two-part solution together to produce flexible and durable parts.

Our custom injection molding services

Plastic Injection Molding Service

Injection molding is a manufacturing process that consists of filling a metal mold cavity with liquid plastic resin, which then cools and forms a plastic part.

Insert molding

A manufacturing process in which a part is molded around a pre-installed insert in the tooling.

Overmolding

A manufacturing process in which one plastic material is molded over another to create a single component.

Liquid silicone rubber molding

Athermoset process that involves mixing a two-part solution together to produce flexible and durable parts.

Satisfied Customers

We are still keeping good and lasting relationships with these customers

MERCKphilipsaudimagnaWhirlpool

Applications and Advantages

of Injection Molding

Rapid PrototypingProduction PartsRange of Industries and Certifications

Rapid Prototyping

Low-cost tooling allows for rapid injection molding to be produced in as fast as 10 business days at affordable prices.

Production Parts

Injection molding can be the ideal process forlow-volume production molding of 250 units to mass production molding of over 1,000,00 units.Plastic injection parts will generally perform better than the same partCNC machined or3D printed using the same materal. Careful selectionof the resins allow for a wide range of properties and solvent compatibility.Molds are CNC machined to high precision, high tolerances and areable to produce thousands of identical parts with very small and intricate details.

Range of Industries and Certifications

We offer ISO 9001,AS9100,IS0 13485,UL, ITAR, and lSo 7 and 8 Medical Clean Room molding.

Why Use HLH Injection

Mold Services?

Endless Options

Choose from millions of possible combinations of materials, finishes, tolerances,markings, and certifications for your order.

Easy to Use

Get your parts delivered right to your door without the hassle of sourcing, projectmanagement, logistics,or shipping.

Vetted Network

We are lS0 9001:2015,ISO13485, and AS9100D certified.Only the top shops that applyto become Suppliers make it through our qualification process.

Injection molding materials

Injection molding uses a huge range of plastics, making it ideal for many applications across nearly every industry. we can source thousands of materials on request.

Acrylonitrile Butadiene Styren (ABS)

Acrylonitrile Butadiene Styren (ABS)

Polymethyl Methacrylate (PMMA)

Polycarbonate (PC)

Polycarbonate (PC)

Polyethylene (PE)

Polypropylene (PP)

Polypropylene (PP)

Polyamide 6 (PA6)

Polyether Ether Ketone (PEEK)

Polyether Ether Ketone (PEEK)

Polyoxymethylene (POM)

Injection molding surface finishes

SPI surface finishes:We offer any type of SPI surface finish, such as A-1, D-2 or D-3.

VDI surface finishes:VDI 3400 Surface Finish (commonly known as VDI surface finish) refers to the mold texture standard set by Verein Deutscher Ingenieure (VDI), the Society of German Engineers. This is mainly processed by EDM machining, producing fine to coarse matte finishes.

Injection molding surface finishes

Custom Injection Moldings Design Guidelines

Feature

Tip

Undercuts

Reduce undercuts, which will increase the complexity and cost of the tool ejection mechanisms, by adding in pass-thru coring.

Wall Thickness

Prevent wall sink and voids by maintaining an even wall thickness.Thinner walls reduce cycle time and reduce costs.

Drafts

Ensure parts are designed with a minimum draft angle of 0.5°,or up to 5, for faces with medium textures.

Ribs/Gussets

Ribs should be 40-60% the thickness of outerwalls and should still maintain draft.

Bosses

Bosses should be designed at a depth of 30% the wall thickness and witha 30% edge groove.Attach them to side walls or ribs for structural integrity.

Tooling - prototyping vs production

Prototyping

Ideal for rapid prototyping and low-volume production

1:Tool shot life – 1k to 100k units

2:Fast turnaround and cost-efficient construction

3:Aluminum or steel

Production

Longer-lasting tooling for larger volumes

1:Tool shot life – 100k to 1M units

2:Automated production for cost-efficiency at higher volumes

3:Hardened steel for longer life and a scalable unit price

CNC

Company Profile

1：At HLH, we make things for you. Rapid products and parts delivered fast. First class prototypes that look like production parts. Flexible project solutions that fit your specific project requirements. Our MOQ starts at 1 for prototypes and typically goes up to 100,000 parts (plastic, metal, composites), anywhere in this range is what we would consider low-volume manufacturing.

2：Powerful processing manufacturers, the delivery time is shortened by 30% high production efficiency, strong supply capacity, free samples in 2 days, as fast as 1 Day delivery, can meet the processing needs of different customers.

3：A strong technical team, reduce costs and increases efficiency for customers The founder has been deeply involved in the industry for more than 20 years. There are about 100 technical researchers with more than 6 years of industry experience and extensive product structure knowledge. They can cooperate with customers and help them to optimize the design, and make the quality of spare parts better.

factory
factory
factory
factory
factory
factory

High quality parts every time

Quality assurance

Quality assurance

From factory audits to part inspections, we follow strict processes to ensure your parts always meet the highest quality standards.

IP protection

IP protection

We take every measure to ensure the protection of your IP, which is why 27% of Fortune 500 companies trust us with their projects.

Certifications

Certifications

Our manufacturing partners have all the necessary certifications for your project's needs (ISO 9001, ISO 14001, IATF 16949, ISO 27001).

Contact Sales

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RELATED SOURCES

Insert molding
Insert molding
Overmolding
Overmolding
Liquid silicone rubber molding
Liquid silicone rubber molding

Testimonials

Amazing experience. All the expectations fulfilled. Exceptional quality and surface finish. Lead time faster than initially stated.

Amazing experience. All the expectations fulfilled. Exceptional quality and surface finish. Lead time faster than initially stated.

-------------STEVEN JAWORSKI

I think HLH is a very customer friendly service, easy to understand the costs and build limitations. The best part for me is the ease of which I can turn ideas around into something I can sell, which I can use to fund my next project.

I think HLH is a very customer friendly service, easy to understand the costs and build limitations. The best part for me is the ease of which I can turn ideas around into something I can sell, which I can use to fund my next project.

------------YONATAN ASSOULINE

HLH has always given us exactly what we needed. We’ve received parts with holes in the right places, with the right finish, and on time. Their user-friendly website means faster turnaround.

HLH has always given us exactly what we needed. We’ve received parts with holes in the right places, with the right finish, and on time. Their user-friendly website means faster turnaround.

----------------Jackson Siu

Recent Articles/Blog

Learn what an undercut in injection molding is and how to design your part avoiding undercuts.

1：Injection Molding - Undercuts (How to Avoid and Design)

Learn what an undercut in injection molding is and how to design your part avoiding undercuts.

------Learn More
In this comprehensive, 40-page-long guide you will learn all you need to know about Injection Molding. Whether you are an experienced design engineer or just getting started with injection molding, this guide is for you.

2：Injection molding: The manufacturing & design guide

In this comprehensive, 40-page-long guide you will learn all you need to know about Injection Molding. Whether you are an experienced design engineer or just getting started with injection molding, this guide is for you.

------Learn More
Learn how to use injection molding to mass produce plastic parts. Whether you're an experienced engineer or just getting started, this is your go-to guide for injection molding.

3：Injection molding: The manufacturing & design guide | Protolabs Network

Learn how to use injection molding to mass produce plastic parts. Whether you're an experienced engineer or just getting started, this is your go-to guide for injection molding.

------Learn More