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04
2020-05
Everlasting Machinery: the development prospects of the blister industry
Vacuum blister molding process, as early20It was known at the beginning of the century, but it was only used in industrial production.20Century40After the years, and in60The era has been a major development. Near20Over the years, it has developed into one of the important methods for processing packaging materials. The reason for the rapid development of this technology is the continuous innovation of vacuum blister molding process and equipment, as well as the development of new sheets with molding properties, and it is also determined by the development of packaging technology and the characteristics of vacuum blister molding packaging itself.
Vacuum blister forming is one of the most commonly used forming methods for packaging containers. It is a thermoplastic plastic sheet molding object two molding technology. In foreign countries, vacuum blister molding is an old molding process. Due to continuous development and changes, it has been highly automated and mechanized, and no waste material is produced,100 per cent of raw and auxiliary materials are turned into products. The molding system engineering of the whole assembly line production.
Vacuum Blister forming is different in the following conditions:
1. The re-molding temperature required for heating the molding material to a high elastic state;
2. Molding molds usually used for plastic molding;
3. Cooling the product to a cooling temperature at which no dimensional change occurs;
4. After the size is stable, the film is removed.
In most cases, post-blister processing is also necessary, such as: trimming, welding, bonding, heat sealing, coating, metal spraying, flocking, printing.
Vacuum plastic forming has now become a commonly accepted term in the processing field: 'vacuum forming' (vacuum forming）,And 'pressure forming '(pressure forming) refers to some special processes that use air pressure processing, 'thermoforming '(thermo forming) is a general term for various thermoplastic molding (including vacuum and pressure, or mixed molding).
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