Injection molding PRODUCT NEWS

Check whether there is any foreign matter in the hopper. No items are allowed to be stored above the hopper. The cover of the hopper should be covered to prevent dust and debris from falling into the hopper.

Plastic injection molding is a molding method of injection and molding. Its equipment is called plastic injection molding machine, or injection molding machine for short. Plastic injection molding machine is the main molding equipment that makes thermoplastic and thermosetting plastics into various plastic products. Ordinary plastic injection molding machine refers to the most widely used horizontal,

The commonly used methods for processing thermoplastics include extrusion, injection molding, calendering, blow molding and thermoforming. The processing of thermosetting plastics generally uses compression molding, transfer molding, and injection molding

The injection molding machine is a special equipment that combines the thermal processing characteristics of plastics and the principle of metal melting and die casting. The first plunger injection molding machine, it was not until the end of the 1940s that a pre-plasticized screw injection molding machine was developed.

The injection molding machine is a special equipment that combines the thermal processing characteristics of plastics and the principle of metal melting and die casting. The first plunger injection molding machine, it was not until the end of the 1940s that a pre-plasticized screw injection molding machine was developed.

Mould design is an important part of the development process when considering the production of a new moulding. Some considerations are given below.

Injection molding is a manufacturing process for mass production of parts.It is most commonly used for mass production of the same parts, usually on a scale of tens of thousands or even millions of times.

Material for injection mold (plastic mold steel) is required to have sufficient strength, toughness, heat resistance, wear resistance, and good corrosion resistance, heat treatment hardness must be greater than 42-48HRC, cavity working surface needs to keep the surface roughness unchanged for a long time.Commonly used materials are 45, Tl0, TlOA, 9Mn2V, 3Cr2W8, etc.Therefore its electric discharge machining process basic rules are as follows.

For example, if the actual recycled material ratio is 30%, substitution method can be made by testing once in recycled material ratio of 50%. However, recycling will be influenced greatly by pulverization shape and water control, so sufficient confirmation is required.

Proper recycled material mix rate depends on the recycled material quality, using grade, and product's demand characteristics, so cannot be completely defined. Therefore, decision of the limit of the recycled material ratio

should be made after sufficient check has been done.

As stated above, PBT will degrade in physicality by causing hydrolysis if heat history is received without enough drying, so the drying of fractured product need to be well considered when recycling.

Generally, warpage towards inside tend to be bigger as the span get longer, and it tend to be bigger on the long side, compared to the short side. Remedying by placing a rib on the inside, or placing a triangle rib on the corner part, is possible.

（1） At the corner part, outside cooling will be faster than the inside, so this shape tend to deform towards the

inside direction.

（2） Remedying by placing the gate on the corner part is sometimes possible if it is GF reinforced grade.

（3） Lightening the corner inside part is effective. Make the recess part round, and do not make the sharp

corner.

This shape will be affected a lot by the shape factor, so countermeasure by the molding condition is generally difficult. There is method that make difference in mold temperature, but it will accompany a hardship in facility aspect and management aspect.