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REAL FLINT GLASS LTD
No. 17, Yangshan Rd, Economic Development Zone, Xuzhou City, China 221001
Tel: +8618705205756
realflintglass@gmail.com
Press & Blow Process
Details
Methods for Producing Glass Containers:
Blown Glass is also known as molded glass. In creating blown glass, gobs of heated glass from the furnace are directed to a molding machine and into the cavities where air is forced in to produce the neck and general container shape. Once they are shaped, they are then known as a Parison. There are two distinct forming processes to create the final container:- Blow & Blow Process - used for narrow containers where the parison is formed by compressed air
- Press & Blow Process- used for large diameter finish containers in which the parison is shaped by pressing the glass against the blank mold with the metal plunger
At one point this process was typically used for wide mouth containers, but with the addition of a Vacuum Assist Process, it can now be utilized for narrow mouth applications as well.
Strength and distribution is at its best in this method of glass formation and has allowed manufacturers to “lightweight” common items such as beer bottles to conserve energy.
Examples of Press & Blow Containers