Injection mold product defects and correction

Process, a variety of reasons caused the different defects of all kinds of products, here are several common product defects and solutions:

Deformation when the product out of the mold, mold temperature, is expected to moderate products when the mold temperature is higher, the holding time is not enough and the residual stress of the function of the design reasons, the product wall thickness and uneven contraction, the gate location and ejector, sticky mold caused by the inappropriate position is when the design must be considered.

Fault back to the material or packing too much, too little ejector is too small, top speed too fast, the material temperature is too low, sticky mold, vacuum state and so on caused by clearance is too small, have insert insert preheat enough will cause cracks. A handful of products subject to eliminate stress annealing.

Demoulding difficulty wear draft is too small and not verticality, abrasions are processing residues, such as grinding machine of burr on the front Angle in cavity, roughness is too large, it is easy to solve. Bubble temperature is too low, too high, or too thick wall thickness, moisture content is too high, with solvent or volatile matter.

In many core fusion seam weld mark and is difficult to avoid when broken, reasonable regulation of temperature and injection speed, good design gate and vent overflow position to improve the look of the product.