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Glass bottle secondary molding makes the product more delicate
Ordinary glass bottle [ Bottle ] Normally use two molds to blow twice The method of secondary molding The first mold is the primary mold The main purpose is to fix the height of the bottle molding frit and to some degree of cooling The second mold is a forming mold . Forming a glass bottle with a mold directly has unsolvable problems. If the material temperature is high , the air temperature in the bottle is much higher than the outside of the bottle during the process of cooling the bottle after molding. bottle 900 degrees to about 1000 degrees] will lead to a very low pressure vial bottle inward contraction of the bottle is not round if the material temperature is low then the bottle because the relatively poor flowability of the glass frit causes the bottle during blowing The pressure that the bottom bottle can withstand