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The steel selection for plastic injection mold

By Jackie | August 15, 2018 | 0 Comments

Steel Selection for Molding Components Molding components refer to the mold parts or components which have a direct contact with the plastic materials to form a product, such as mold cavities, mold cores, sliders, inserts and lifters, etc. The steel quality of the molding components has a direct influence on mold quality and service life, … Read more

The texturing

By Jackie | August 14, 2018 | 0 Comments

Definition Texturing refers to the process that produces various patterns on the surface of a metal product through chemiosmosis, such as stripes, images, wood grain, leather pattern and stain, etc., while also including sandblasting, which means spraying glass sands directly onto the surface of a metal product. The Purpose of Texturing: Improve product appearance. The … Read more

A Brief Introduction to Ejector Pin Design

By Jackie | August 6, 2018 | 0 Comments

Purpose: Eject the molded part from the injection mold. Considerations for the ejection system: 1 Ejector pin holes should be at least 3/32” away from other holes; 2 At least a clearance of 1/32” for pin holes on the ejector plate; 3 At least a clearance of 1/64” for pin holes on the mold plate; … Read more

The design considerations and types for injection molding gate

By Jackie | July 31, 2018 | 0 Comments

Injection molding gate design Considerations: 1.A small opening between the runner and the mold cavity, of which the location, quantity, shape and size, etc. have a direct influence on product appearance, dimensional accuracy, physical characteristics and injection molding efficiency. 2.The size of an injection molding gate is dependent on product weight, material properties and gate … Read more

Commonly Seen Mainstream Injection Molding Machine Brands

By Jackie | July 30, 2018 | 0 Comments

The injection molding machine industry has experienced rapid development across the whole globe. Especially, in the era when Chinese manufacturing industry develops at a very fast pace, many Chinese and foreign injection machine brands are widely used in enterprises which produce plastic products. Among them, the more famous ones include Chen Hsong from Hong Kong, … Read more

Lifters or Sliders for Undercuts on Four Sides?

By Jackie | April 13, 2018 | 0 Comments

As mold designers, we are all aware that, in normal circumstances, lifters are created for inner undercuts and sliders are created for outer undercuts. However, when we have undercuts on all 4 sides of a product, which makes it impossible to release the product by force, how should the mold be designed? See the following … Read more

Injection pressure,holding pressure and back pressure

By Jackie | April 11, 2018 | 0 Comments

1.Injection Pressure Injection pressure is exerted by the hydraulic mechanism of the plastic injection molding system. This pressure is transferred from the hydraulic cylinder to the molten plastic through the molding screw, under which the molten plastic will be pushed to flow into the mold sprue (also known as the primary runner of some molds), … Read more

How to set the holding pressure?

By Jackie | April 9, 2018 | 0 Comments

The setting of holding pressure is aimed to prevent resin backflow, while at the same time compensating for resin shrinkage caused during the cooling process, so as to achieve the optimal molding outcome. If the holding pressure is set too high, the product will be prone to flash, over filling or stress concentrating near the … Read more

Tips on Injection Molding Material Change and Color Change

By Jackie | April 8, 2018 | 0 Comments

Changing material or color in the injection molding process certainly deserves in-depth discussion. A quick color or material change cannot only save time, but also drastically bring down the production cost. 1)Color change – a same material 1.1 In principle, when changing the color of a same material, change from light to dark is usually … Read more

Characteristics & Injection Molding Process of Common Transparent Plastic Materials

By Jackie | April 6, 2018 | 0 Comments

By virtue of its enormous benefits, such as light weight, outstanding toughness, easy molding and low cost, plastic is gaining more and more popularity in modern industry and the production of daily necessities, because it is an ideal substitute for glass. Especially, in the fields of optical devices and the packaging industry, it has witnessed … Read more