Glass craft wine bottles with complex shapes are mostly artificially formed. The most important property of this stage is the viscosity of the glass. When the milky white wine bottle is artificially formed, the manual operation speed is slow, the manufacturing process is many, and it takes a long time. The glass must have a long enough materiality. There are five main forming methods of glassware: blow forming, press forming, pressure-blow forming, centrifugal forming and free forming.
The first four belong to mechanical molding, and the last one is artificial furnace molding. From molding to finalizing, the glass surface is not in contact with the mold except for individual parts. After many times of bonding and thermal modification, it can be very Smooth, glossy surfaces, and crafted wine bottles with complex shapes, lifelike images, various expressions, and lifelike craftsmanship. Free molding is mainly a molding method that is freely produced in front of the kiln by rich artistic imagination and skilled craftsmanship.
Glass craft wine bottles must be annealed immediately after they are formed, otherwise most of them will break on their own. This is because glass is a poor conductor of heat. Because the thickness of each part of the product is often inconsistent, and the contact with the molding machine and the conveyor belt is cooled, the thermal stress is uneven, and when the stress exceeds its glass When the strength is high, it will cause the product to rupture. The process of annealing is to reduce the stress in the product to the practical allowable.
The annealing kiln for glassware is divided into two types: continuous type and batch type. Corresponding to the production of a single variety in large quantities, a continuous annealing kiln is often used. Its characteristic is that the space of the kiln body is tunnel-type, and the temperature distribution along the length of the kiln is controlled according to the annealing curve of the product. , the various stages of annealing are completed. At present, the factory often uses the crawler annealing kiln to anneal the utensil products, so that the production can be continuous and automated, the annealing quality is better, and the heat consumption is low.