Polypropylene material defects solve new program tiger stripes

Polypropylene its density, cost-effective and comprehensive superior characteristics, widely used in automobiles, appliances , pipes, packaging and other fields. The impact of poor performance polypropylene , high impact product application requirements , often need to add elastic to increase their toughness. However, in some large high tenacity polypropylene parts molding process tends to produce light and dark stripes, called " tiger stripes " , affecting parts appearance.Masking tape

Currently , the solution tiger pattern defects , mainly from the mold structure , molding process and material formulation to solve three aspects . Optimization abrasive structure, such as the cross -sectional expansion of the gate , the number of trapped gas to reduce the tiger stripes defects can be effectively reduced , but there is a risk in a cost aspect of the cycle . Adjustment of molding process , e.g., elevated temperature and injection molding temperature to reduce the rate of fire , to reduce the tiger stripes defects can to some extent. Material formulation design , add increased mobility aids, improve the use of broad molecular weight distribution of polypropylene tiger pattern defects also have some effect.Washi tape


Shanghai Day or New Technology Development Co., Ltd. , relying on seventeen years of accumulation and modification support strong R & D team , innovative way to solve a novel polypropylene material defects program tiger stripes . Add a new wide polypropylene composites diverse polymer molecular weight distribution , which can effectively eliminate the tiger stripes , material properties controllable , low VOC. This method can be used to solve the car dashboard , door panels and other large parts defects appear in tiger stripes .Sellotape