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Different plastic molding process for plastic product

By Jackie | September 3, 2018 | 0 Comments

Plastic refers to the numerous organic synthetic materials that are mostly polymers of high molecular weight. Currently, it is one of the 3 synthetic materials that are indispensable for our day-to-day life, while the other 2 are synthetic rubber and synthetic fiber. Natural or synthetic resin, the main ingredient of plastic, is often mixed with … Read more

The injection molding gate types

By Jackie | August 29, 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

Hot runner system of plastic injection mold

By Jackie | August 28, 2018 | 0 Comments

How the Hot Runner Works The cold runner of a plastic injection mold refers to the section between the mold inlet and the gate. The molten plastic maintains its fluidity inside the runner by virtue of the injection pressure and its own heat. However, as a part of the molding material, the runner is not … Read more

The Cooling System

By Jackie | August 28, 2018 | 0 Comments

 The Cooling Line Purpose The cooling line purpose is to ensure uniform cooling of the molded product and then eject the product out within a short period of time. The layout of the cooling channel plays an important role in the injection molding quality as well as the production cycle (cost) of a product. Influence on … Read more

Venting Slot Design

By Jackie | August 28, 2018 | 0 Comments

During the plastic injection mold trial process, defects like short-filling, trapped air burns, high internal stress, flow marks and weld lines often occur. For those problems, the first solution would be adjustment of the plastic injection molding process, and another consideration would be the reasonable design of the mold gate. Once both of these problems … Read more

The steel selection for plastic injection mold

By Jackie | August 28, 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

How to design the parting line(surface)?

By Jackie | August 27, 2018 | 0 Comments

Type of parting line(surface) 1.Horizontal parting line 2.Oblique parting line 3.Curve parting line 4.Parting line on shut off holes 5.Parting line on side holes   General Principles for Selection of Main Parting surfaces Protect the Inserts Usually, product disassembly needs to be considered before selecting the main parting surface, i.e. identify the secondary parting surfaces, … Read more

The spring for plastic injection mold

By Jackie | August 27, 2018 | 0 Comments

As an elastic component, the spring plays a very important role in a plastic injection mold, because a properly located spring is able to provide the necessary driving force that the mold needs. For example, when the ejection mechanism completes the ejection action of a plastic part, a spring can be applied to force the … Read more

The runner design

By Jackie | August 27, 2018 | 0 Comments

The Runner Concept The runner refers to the melt flow passageway between the end of the main runner and the gate, which is used to change melt flow direction and allocate it to each cavity in a stable and balanced way. The basic design principle of the branch runner is little pressure/heat loss, with the … Read more

The Design of Sprue bush (Main Runner)

By Jackie | August 26, 2018 | 0 Comments

The main runner refers to the melt flow passageway from the joint between the injection molding machine nozzle and the mold sprue bushing to the starting point of the branch runner. –The design has to minimize melt temperature drop/pressure loss. –Adopt the cone shape design, to facilitate removal of the condensed material Forms of The … Read more