US PATENT SUBCLASS 53 / 453-- .~.~ Forming a pocket or depression in cover material by applying heat or pressure (e.g., stretch forming)

US PATENT SUBCLASS 53 / 453
.~.~ Forming a pocket or depression in cover material by applying heat or pressure (e.g., stretch forming)

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

396	DF	METHODS {22}
452	DF	.~ Forming or partial forming a receptacle and subsequent filling {4}
453		.~.~ Forming a pocket or depression in cover material by applying heat or pressure (e.g., stretch forming) {1}
454	DF	.~.~.~> Forming a capsule

DEFINITION

Classification: 53/453

Forming a pocket or depression in cover material by applying heat or pressure (e.g., stretch forming):

(under subclass 452) Methods for making contents-receiving cavities in a blank or web (sheet) by the application of mechanical or fluid force or increasing temperature to cause the sheet or blank material to flow at select locations.

(1) Note. The cavity must not be merely a transient condition in the cover material but must substantially maintain its formed shape after the package is complete.

SEE OR SEARCH THIS CLASS, SUBCLASS:

559, for corresponding apparatus.

578, for apparatus for forming a receptacle in a die wherein no plastic deformation of the cover material occurs.

SEE OR SEARCH CLASS

264, Plastic and Nonmetallic Article Shaping and Treating: Processes,

500+, for methods of molding, filling, and closing of receptacles where the receptacles are filled and/or closed before removal from the molding device.