Process for regulating the heating of a thermoplastic band used

Details Process for regulating the heating of a thermoplastic band used Process for regulating the heating of a thermoplastic band used

1988-05-11

1989-03-21

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

With measuring, testing, or inspecting

Controlling heat transfer with molding material

264522, B29C 5142, B29C 5146

Patent

active

048141232

ABSTRACT:
A process for regulating the heating of a thermoplastic band used in a station for thermoforming upwardly open containers, the process being characterized in that, in a zone of the softened thermoplastic band, zone surrounded by a mesh of rigidified matter, the degree of deformation of this zone under the action of a predetermined mass is measured, the measured value of the degree of deformation is compared with a predetermined reference value corresponding to a good aptitude to thermoforming, and the heating of the band is regulated as a function of the value of deformation measured so that the deformation corresponds to the reference value.

REFERENCES:
patent: 2966792 (1961-01-01), DiPieri
patent: 3412183 (1968-11-01), Anderson et al.
patent: 3774440 (1973-11-01), Martinelli

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