Apparatus and process for the manufacture of disposable thermome

Details Apparatus and process for the manufacture of disposable thermome Apparatus and process for the manufacture of disposable thermome

1978-07-31

1980-11-18

McGehee, Travis S.

Package making

Methods

Forming or partial forming a receptacle and subsequent filling

53131, 53559, B65B 4702

Patent

active

042338018

ABSTRACT:
Apparatus and method for making disposable thermometers of a laminated construction containing an array of liquid-crystal droplets, requiring precise registration of the stretchable substrate layer, the droplets and the temperature markings, wherein the substrate film web from which the thermometers are formed is provided with wide margins for handling in the forming machine to provide strength and avoid stretching and heat deformation. The substrate film web is precisely directed through the machine by suitable guide members and is held at the marking, filling, and heat-seal processing stations by suitable vacuum chucks, the chuck at the heat-sealing station being particularly adapted for cooling the web to avoid unwanted heating of the crystal droplets. A cam-operated transporter is used for precisely indexing the movement of the film.

REFERENCES:
patent: 3464182 (1969-09-01), Nichols
patent: 4012888 (1977-03-01), Nichols

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