flow marks injection molding defect

Flow marks-plastic injection molding defect

(1) What are  flow marks (appearance)? Flow mark refers to the wavy lines or patterns appearing on the surface of the...
Polycarbonate injection molded product

Polycarbonate (PC) injection molding conditions

In PC plastic injection molding process, the choice of moisture control and molding conditions are the two...

What is plastic injection moulding?

The Principal of Plastic Injection Moulding The so-called plastic injection moulding process refers to: the plastic material in...
PC+ABS plastic resin

PC+ABS plastic injection molding material characteristics and conditions

What is the PC+ABS material? What are the purposes of PC+ABS? And, what is the injection molding...
weld lines injection molding defects

Weld lines,plastic injection molding defects

What are Weld Lines? (Appearance) Weld lines appears where the resin flows meet. As shown in the figures...
sink marks injection molding defects

Sink Marks, plastic injection molding defect

(1) What are sink marks (appearance)? Sink marks refer to the surface depression caused by resin shrinkage. After the crystalline resin...

Pressure holding(pack)process

The injection molding process of a plastic product is usually divided into two stages: in the first stage, most of the plastic is fed...
the cause of burn mark air trap

Burn mark( air trap) plastic injection molding defect

(1) What Is Burn Mark? (Appearance) Burn Mark refers to the blackened edge that is caused...
The fluidity of plastics

Fluidity of Plastics

     The fluidity of plastics:An indicator to compare the injection molding difficulty level of a plastic material, which like viscosity, is...
mold temperature control

How to Properly Control Mold Temperature?

Proper Mold Design When molding with engineering plastics, such as POM (polyoxymethylene), PA (nylon), PBT and PET...

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