Common problems and solutions of TPE material molding

Time：2019-12-09Hits：1868

Dear friends hello, welcome to read the related content of TPE materials published by Huimin Zhang. As an influential TPE material producer in south China, we will share more knowledge about TPE / TPR materials Let you know TPE / TPR materials more quickly, quickly find the right TPE materials for your products, today is December 25,2017, Christmas, first of all here to wish you a merry Christmas Well, what we are describing here today are some common problems and solutions of TPE materials in molding process Following my steps, let's take a look at it together... When the die is opened or pushed out, the rupture of the finished product is a hairlike crack, which seriously affects the strength of the product. (2) injection supersaturation. (3) mold temperature is too low. (4) defective construction of the finished product. A Flow Mark is a Mark in the Flow of molten material. It is formed by a boundary between the material injected into the mold cavity first and the material that flows into it later. The injection temperature should be raised, the fluidity of the material should be improved, and the injection speed should be adjusted to prevent the formation of flow lines. Black Stripe is a phenomenon of black stripe in finished products. It is mainly caused by thermal decomposition of materials. It is often found in materials with poor thermal stability. Finished product surface gloss lost the original surface gloss, the formation of Milky White film or mold and the State of the surface gloss is not good. The binding line is a fine line formed by the confluence of two or more channels of molten material. The reasons are as follows: (1) the material flow mode caused by die structure. (2) poor fluidity of molten material. (3) foreign matter such as air, volatile matter or deforming agent is entrained in the confluence of the molten material. (4) the merging part of the molten material is too cold to be fully fused. The main causes of insufficient filling are improper setting of processing conditions, poor mold design, thin finished product thickness and so on. Burrs when the pressure of plastic in the mold cavity is too large, its parting force is greater than the clamping force, and therefore forced to start the mold, there will be burrs. The formation of striation is generally due to the rapid start-up of the injection speed, so that the air in the mold cavity can not be pressed out by the molten rubber, the air mixed in the rubber, resulting in uneven surface gloss and color of the products, thus affecting the appearance and reducing mechanical strength. There are many reasons for the deformation of finished products, such as too fast die, too high die temperature, uneven die temperature and unsymmetrical runner system, etc. . The injection pressure or packing pressure is too high, which will make it difficult for the finished product to be filled into other voids. Plastic products shrink plastic products have a concave surface, empty called "shrink" , which affects the appearance of finished products, reduce quality and strength. The main causes were plastic, processing technology and mold. See the above TPE material processing common problem point is not helpful to you! If you don't have any of the above problems, please feel free to call us at any time. We will talk to you one by one! As TPE / TPR raw materials sales specialist, I am very like TPE / TPR materials, in this industry after all a few years is also a feeling, paid hard work and sweat! If you are developing TPE-TPR materials related products, need to understand TPE-TPR materials, need to provide technical support, then we will be your best choice, contact telephone number: 13827209711

德创化工 (edit：dechuang)