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Our Injection Molding Processes Services

Rapid tooling
Rapid tooling

Fast and cost-effective process to create aluminum or steel injection molds for quick turn injection molding. Ideal for rapid prototyping needs or validating product concept for production.

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Overmolding
Overmolding

Overmolding is a unique injection molding process that combines two or more components together. It is the best practice for the plastic manufacturing of multi-color and multi-layers products.

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Insert Molding
Insert Molding

Insert molding is a custom injection molding process that encapsulates components in a plastic part. It is most commonly used for prototype injection molding designs with threads and holes.

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From Prototype To Production
Rapid Design Molds
Rapid Design Molds

Ideal for part design validation, low volume production, and bridge production quantities.

No minimum order quantities

Complex designs accepted

Steel tooling

Production Tooling
Production Tooling

Ideal for higher volume production parts, starting at 10,000 units. Tooling costs are higher than Rapid Design Molds, but tooling construction allows for lower part pricing.

Up to 1M molding shots

Steel tooling & multi-cavity tooling

Automatic tooling actions

OUR EXPERIENCE IN NUMBERS

12,000 sq/m Manufacturing Facility

More than 30 years of industry experience

Serving customers in more than 100 countries

More than 100 3D printing equipment

More than 300 cnc processiong equipment

Injection Molding Processes Materials

NAME
DESCRIPTION
DETAILS
NAME
ABS
DESCRIPTION
High stability + Easy to process
DETAILS
$$
NAME
POM (Delrin)
DESCRIPTION
Low-friction + High-stiffness
DETAILS
$$
NAME
PC (Polycarbonate)
DESCRIPTION
High impact resistance + High transparency
DETAILS
$$$
NAME
PA (Nylon)
DESCRIPTION
High chemical and heat resistance + High abrasion and wear resistance
DETAILS
$$
Learn More Materials

Injection Molding Surface Finishes

PAINTING

Painting refers to the surface coating processing of industrial products. Spray the specified color according to the customer's requirements.

Applicable Materials : ABS, POM(Delrin, PC(Polycarbonate, PA
Color : Any RAL code or Pantone number
Texture : Uniform gloss or matte
Function : Improve the appearance of the product, and extend the service life of the product through an extra layer of protection.
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PAINTING

How HLH Works

Rapid Prototyping

Low-cost tooling allows molded parts to be produced in as fast as 10 business days at affordable prices.

Production Parts

Molding can be the ideal process for low-volume production molding of 250 units to mass production molding of over 1,000,000 units.

Range of Certifications

We offer ISO9001; ISO14001 & IATF16949.

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FAQ's
What is injection molding?
Injection molding is two large metal mold halves coming together, a plastic or rubber material is injected into the cavity they form. Even though the plastic materials being injected are melted, they aren't really heated; the material is pressed into the injection ports (called gates) via a large auger screw. As the material is compressed, it heats and begins to flow into the molds. Once it cools, the two halves separate again and the part pops out. Repeat ten thousand times, and you have a run of injection molded parts ready for use.
Design guidelines for Injection Molding
TIPS & TRICKS
Remove undercuts if possiblece
Specify a lower grade surface finish
Mold in standard
plastics – pp, abs etc
Reduce weight of part
TEXT & LOGOS
Embossed text on the part is preferable as this can be machined into the mold tool.
TEXT & LOGOS
HOLLOW OUT
Any thick sections on the part should be hollowed out, ribs can be used for strength.
HOLLOW OUT
WALL THICKNESS
Use uniform wall thicknesses. Walls 1-3mm are recommended for most materials.
WALL THICKNESS
THREADS
Threaded inserts canbe over molded into the part.
THREADS
CORNERS
Round all corners if possible. A radius of 0.5x wall thickness is advised.
CORNERS
DRAFT
Draft angles should be added to all parts in the direction of draw. Draft prevents surface scratches and damage when demolding & prolongs life of tool. Two degrees'draft + is recommended.
DRAFT