Polyimides can be used to increase productivity levels in the manufacture of glass bottles for the containers, pharmaceuticals and cosmetics industries.
The high temperature resistance and low thermal conductivity of these high-performance plastics offer major benefits for hot glass handling applications.
Polyimides from the Tecasint product family are enjoying ever more popular use in the production of handling equipment such as take-out tongs and deadplates.
These materials can be economically produced and help to reduce the rejects quota.
Non-melting polyimides from Ensinger offer excellent long-term thermal stability.
Even when heated briefly to temperatures of up to 550° C, many Tecasint materials will not melt or soften.
Even in continuous operation, they retain their characteristic strength, dimensional stability and creep resistance.
Many manufacturers of container and perfume glassware in particular make use of the graphite-modified Tecasint 6032.
Components produced from these materials are used for the hot glass handling and onward transport of glassware at extremely high temperatures.
Alongside extreme temperature resistance and low thermal conductivity, good resistance to abrasion and breakage is particularly significant for this type of application.
Other key requirements imposed on materials used in glass handling are mechanical strength and minimal oil absorption.
In comparison to graphite, the property profile of Tecasint 6032 offers a particular range of benefits.
The low thermal conductivity of this type prevents the formation of microcracks in the glass, which can result from thermal shock during the handling processes.
The excellent abrasion wear helps to extend the life of the components, and the toughness typical of this material helps reduce the formation of fractures during handling and production.
Tecasint’s low oil absorption prevents the occurrence of print marks on the glass surface.
Glass manufacturers also benefit from a reduction in the rejects quota and shorter downtimes, resulting in higher productivity.
The result of these benefits is a cost reduction up to 70% compared to graphite.
The material lends itself very well to machining, but without the creation of dust typically expected when cutting graphite.
This reduces the level of stress on the cutting machine and the amount of maintenance work required.
Tecasint 6032 can be used to manufacture larger batch sizes, also making use of the more economical direct forming process.