Pick up a living requirements for luminaires for PVC, never used the material that this material is not good to ask you to the point of transparency is not a lamp, because it will shine requirement.
Soft PVC material, injection molding should pay attention to cooling time is long enough, otherwise prone to shrinking white side light phenomenon.Hard PVC. It is an amorphous thermoplastic resin made by polymerization of vinyl chloride monomer, with certain additives (such as stabilizers, lubricants, fillers, etc.).In addition to additives, the method of blending with other resins is also applied to make it have obvious practical value. These resins are CPVC, PE, ABS, EVA, MBS and so on.UPVC has high melt viscosity and poor flowability. Even if the injection pressure and melt temperature are increased, the fluidity is not changed. In addition, the molding temperature of the resin is very close to the thermal decomposition temperature, and the molding temperature range is very narrow. It is a difficult material to be formed.
Lamps are also translucent, ah, clear requirementsAttention should be paid to plasticization, fluidity and mixing
How do you say this?PVC is indeed divided into hard and soft, relatively speaking, soft PVC good processing, hard PVC difficult processing.If the landlord is the production of lampshade, it is estimated that the use of hard PVC granular extrusion moldingIf the landlord is the production of lamps and accessories, it is estimated that the use of injection molding, then soft, hard, are likely to use. But hard to use more. If it is hard PVC injection molding, first suggested the use of professional PVC injection mold, the surface of chrome antirust polishing treatment, try to increase the adhesive inlet, exhaust hole increase, if mold manufacturers Technology in place, try to let them with a cold well. Granular 65 degrees bake for 2-3 hours and then use.We produce nearly thirty years of PVC new pellets, relatively rich experience, I hope the landlord less detours.Thanks for taking.
1, plastic processingAfter 24 hours at room temperature, the water absorption is less than 0.02%, so no drying is necessary. If it must be dry, it can be put into the hot stove of 60-70 DEG C for 3 hours or 80 hours at the drier for 1-1.5 hours.Recycled materials can be used up to 20% and new materials, the amount of recycled materials depends on the end use of the product. Misuse of recycled materials can make injection failure, not only the recycling of too many components, more because the material after repeated processing. More recycled materials, more quality drop.2 、 selection of injection molding machineUPVC because of its high viscosity and easy decomposition, the decomposition product has a corrosive effect on iron, and its injection molding must be made of special plasticizing parts and temperature control system.Ramada in the product coverage of each kind of clamping force model, has a special UPVC injection system, and in accordance with the UPVC pipe products core pulling requirements, with special security door device. Under normal circumstances, as long as the injection volume can meet the weight requirements, the use of this series of UPVC injection molding device can be molded into high-quality products.
