First of all, to understand why there will be a difficult problem of stripping, 1 in the mold by the groove; 2 lack of mold release; 3 mold finish is not high. 1 caused due to lack of demolding slope failure is very common, in the product design must be in on the map marked ejection angle, demolding pitch typically range between 1 to 2 degrees, within the range as as well, special occasion also allows is above 0.5 degrees 2 the injection pressure is too high, the products are too close to the mold, the mold release becomes difficult. 3 in order to successfully make the product from the mold, generalist use containing silicone oil release agent. However, use the mold release agent only very thinly coated layer. If it is too thick to wipe it out. And due to the action of demoulding agent, product printing labels and other secondary processing variable is not good, once coating on the mold release agent attached WIP want to rub to is quite difficult. According to the above basic reason, come up with solutions: 1 instant: reduce the injection pressure, shorten the time of holding pressure, reduce the mold temperature and reduce the ejection rate, spray mold release agent 2 short term: improve the mold cavity of the finish 3 long term: increase the release angle, increase the number of release pins 4 due to the difference of material Both heavy and hard materials, such as GPPS, because the hat inclination caused by insufficient products damaged common things. On both sticky and soft materials, such as PE, may make the product a plurality of tuberous root cut.
