What is Plastic Injection Molding ?

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Plastic Injection Molding is a manufacturing process to produce plastic parts with a mold tooling and injection machine. It is most commonly used in mass-production of same parts.

Injection moulding uses a ram or screw-type plunger to force molten plastic material into a mould tool; and this material solidifies on the mold tooling to obtain the desired shape or parts.(products)

Advantages of Plastic Injection Molding:

  1. Complex Part structure available

Compared to other manufacturing process, plastic injection molding has big advantage on complex part geometry, it means you can design a part with as possible as the product functions. This is what any other molding process or machining process can never beat it.

  1. High Efficiency, Easy Mass Production

As we know, there is a mold tool on injection machining while injection molding process. It takes seconds or minute to get a plastic parts. The manufacturing cycle is quite short compared to CNC machining or other molding process. Therefore it’s easy when you are going to produce it in large volume.

  1. Flexible Color and Material

It’s easy to custom make a plastic parts with different color and material, it is very convenient for a new product development that requires lots of adjustment.

  1. Easy for Engineering Moldification

As we know, any of product development might change a lot so as to optimize a better products. If you design a plastic parts, you can make engineering change easily and conveniently.

  1. Cost-effective

Up to now, plastic injection molding is the most cost-effective way to obtain products. Because the cost of resin and manufacturing process is much lower than metal machining or other molding process. This is why nearly every products contains plastic parts.

Common Defects of Plastic Injection Molding Products:

Flash – The additional material overflew from desired shape or dimension

Shrinkage – The material reduction portion after the plastic product cools from mold tooling. Normally there will be a shrink mark on the surface a plastic product.

Deformation – When the final plastic product come out from injection machine, the product looks not straight obviously or measured by a certain equipment.

Flow marks – An outstanding pattern existing on the surface of plastic product, it normally result by slow injection speed.

Short Shot – The molten plastic does not fully fill in the mold cavity, resulting in a portion where lacks plastic material.

Welding line – It’s also called the juncture line where normally happens on round feature that two flow fronts meet and are unable to join together during the injection molding process.

Burn Marks –  It looks like rust colored, that appear on the surface of the injection molded products.

Our custom plastic injection molding services:

Plastic Injection Molding FacilityInno Molding is a leading plastic injection molding company in Shenzhen China, we provide precision plastic injection molding services to worldwide clients in application of automotive, medical, consumer electronics, home appliance, and other commercial products.

Our injection molding shop is equipped with 30 sets of advanced injection machines. All of injection molded parts are 100% inspected with dimensional, visual, and functional before shipping. So that our clients will get high quality products from us.

Part Weight: 0.25g~3.0KG                                                           

  Injection Machines: 50T~850T

Plastic Material we work for :

PC, ABS, PMMA, PP, POM, PP, PE, PBT, PA, PSU, TPU, TPE, TPR, silicone are available(other materials are negotiable)

Quality Control:

CMM measurementWe are an ISO9001-2008 & ISO14001-2004 certified enterprise.Every our project starts with professional team that  consists of project managers, project engineers, production manager, QC  manager, QC inspector, and shipping manager. Normally we check products by dimensional measurement, cosmetic inspection, and assembly testing. Finally we document those data and make enclosure along with shipment to customer for review.

  FA Insepction Report(First Article Qualification)

  SPC Report(Statistical Process Control)

  DFM Evaluation(Design for Manufacturing)

  FMEA Analysis(Failure Modes and Effects Analysis)

 Full dimension inspection for all of  mold components.