US PATENT SUBCLASS 53 / 557-- .~ By heat shrinking

US PATENT SUBCLASS 53 / 557
.~ By heat shrinking

Current as of: June, 1999
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53 /	HD	PACKAGE MAKING

556	DF	APPARATUS FOR CONTRACTION OF COVER BY STRETCHING OR SHRINKING {1}
557		.~ By heat shrinking

DEFINITION

Classification: 53/557

By heat shrinking:

(under subclass 556) Apparatus in which the cover or cover material is contracted by raising its temperature.

(1) Note. Heat shrinking apparatus per se are not included here unless combined with means to associate the cover with the contents.

SEE OR SEARCH THIS CLASS, SUBCLASS:

287+, for devices which apply a separate closure by shrinking.

442, for corresponding methods.

580, for apparatus which apply a partial cover which may be subsequently heat shrunk about the contents.

SEE OR SEARCH CLASS

34, Drying and Gas or Vapor Contact With Solids, 201, for heat-shrinking apparatus, per se.

219, Electric Heating,

385+, for electrically heated shrinking ovens.