How to deal with sticky mould in TPE injection molding
Source：德創(chuàng)化工Time：2019-12-10Hits：2716
Dear TPE raw material buyers, hello! I am Zhang Huimin, today is December 30,2017,2017 has come to an end, but can not stop me to share TPE / TPR materials related information, so today we share TPE / TPR materials molding problems, TPE / TPR soft molding There will be stick mold problem, which will have a certain impact on the products to be molded, especially in the coating molding bonded ABS, PC and other plastics, in addition to TPE material base material and mixing factors, should be through the mold, the molding process can also be improved and solved by appropriate adjustment. Below will introduce tpe | TPR adhesive molding mold how to solve. 1, the mold: 1, the gate bushing for electrical discharge processing, retain a certain thickness of the discharge pattern, reduce the adsorption of the runner; 2, as soft rubber, flow slot thimble using slot pin style inverted shape, increase the strength of the draw channel. The reverse angle can start small, slow experiment. If the use of general z-shaped needle, there may not be enough tension, resulting in flow channel stick mother mold; 3, Male Mold as far as possible polishing into a mirror, increase adsorption, which is also the opposite of hard resin; 4, Male Mold Angle can be appropriately small, or simply do not do the draft, if allowed, or even do reverse draft; 5, Thimble head can add cross ribs. 2, another can start from the molding process: 1, can mother mold to high mold temperature, male mold to low mold temperature; 2, Mold Release Agent, pay attention to the amount of release agent, so as not to affect the appearance of products. 3, TPE material is an important part of the formula to reduce the proportion of oil-filled, the essence is to make the proportion of oil-filled appropriate, paraffin-grade oil will be better. It is also important to select the appropriate brand of SEBS and SBS. 4. Adjust the TPE blending system to reduce the adhesion between the products and the mould, which is good for demoulding. The above is based on the two major TPE, TPR soft adhesive how to solve the mold, I hope to be able to help you, if you still have questions, welcome to consult our online customer service. If you are developing TPE-TPR materials related products, need one-to-one technical guidance, can always call: 13827209711(Ms. Zhang) we will be at your service!
