The manufacturing process of double-layer glass, we usually know through the steps of blowing, sealing and so on. Today we are going to introduce you to a one-piece manufacturing process for your reference.
Introduce a production process of double-strand glass for positive and negative stretching. The technical problem to be solved is to provide a double-layer glass cup with positive and negative stretching and a production process, the cup is simple in process and low in cost; there is no seam at the mouth of the cup, smooth and flat, no need to be polished, and the scrap rate is low; The curvature of the mouth can be arbitrarily designed according to the market and the user's preference, and the choice is large.
The technical solution to solve the problem is that the cup body has a smooth transition and an integral inner layer and an outer layer, a vacuum is applied to the inner and outer interlayers, and a vacuum port is provided at the bottom of the outer layer; the process includes blanking, positive stretching, and Reverse stretching, welding, vacuuming, sealing.