Glass is widely used in modern times and has always been a product with great market demand. By using specific treatment methods, we can not only give full play to the characteristics of glass, but also make up for its shortcomings, which is no longer subject to the natural properties of glass. For example, laminated glass can not only heat insulation, but also fragments will not splash and hurt people, which is safe and reliable. Next, we as a water bottle supplier will introduce the advantages of glass liner for thermos and the production method of glass liner.
二. Advantages of glass liner for thermos
1. In terms of safety, many components will react with metal containers such as stainless steel at high temperature to produce substances harmful to the body; Especially for the decocted traditional Chinese medicine, try not to pour the medicine soup into the metal container, because the effective components in the medicine liquid will react with the metal and cause adverse reactions
2. In terms of price, compared with the price of stainless steel or other materials, the price of glass liner is much cheaper;
3. In terms of thermal insulation effect, vacuum glass liner has excellent thermal insulation effect among various liners and has high cost performance; That is the reason why glass liners have always been used in hot water bottles at home;
4. Environmental protection, sanitation and easy cleaning;
二. How is the glass liner of thermos pot made
① Bottle blank preparation. The glass material used for thermos belongs to commonly used sodium calcium silicate glass. Take the high-temperature glass liquid without impurities and blow it into glass inner bottle blank and outer bottle blank with wall thickness of 1 ~ 2mm in the metal mold.
② Bladder blank. The inner bottle is placed in the outer bottle, the bottle mouth is sealed into one, and a conduit for silver plating and air extraction is set at the bottom of the outer bottle. This glass structure is called bottle bladder blank. There are three kinds of glass bottle blank: bottom pulling sealing method, shoulder shrinking sealing method and waist joint sealing method. The bottom pulling sealing method is to cut the mouth of the inner bottle blank and the bottom of the outer bottle blank, sleeve the inner bottle from the bottom of the outer bottle and fix it with asbestos plug insert pad, then round and close the outer bottle bottom, connect the small tail conduit, and melt seal the mouth of the two bottles. The shoulder shrinking sealing method is to cut the inner bottle blank, cut the outer bottle blank, sleeve the inner bottle from the upper end of the outer bottle and fix it with asbestos plug insert pad, shrink the outer bottle into the bottle shoulder, melt and seal the two bottle openings, and connect the small tail pipe. The waist joint sealing method is to cut the inner bottle blank and the outer bottle blank, cut the waist into two sections, put the inner bottle into the outer bottle, re weld the waist and connect the small tail pipe.
③ Silver plated. A certain amount of silver ammonia complex solution and aldehyde solution as reducing agent are poured into the interlayer of bottle blank through small tail catheter for silver mirror reaction. Silver ions are reduced and deposited on the glass surface to form a mirror silver film thin layer.
④ Vacuum. Connect the tailpipe of the silver coated double-layer bottle blank with the vacuum system and heat it to 300 ~ 400 ℃, so as to promote the glass to release various adsorbed gases and residual moisture. At the same time, the vacuum pump is used for air extraction. When the vacuum degree in the interlayer space of the bottle liner reaches 10-3 ~ 10-4mmhg, the tail pipe is melted.
Post time: Oct-25-2021