US PATENT SUBCLASS 53 / 479
.~.~.~ Of preformed nonfreestanding container deformed by contents (e.g., bag, tube)
Current as of:
June, 1999
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53 /
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PACKAGE MAKING
396
DF
METHODS
{22}
476
DF
.~ Closing package or filled receptacle {3}
477
DF
.~.~ By heat sealing {2}
479
.~.~.~ Of preformed nonfreestanding container deformed by contents (e.g., bag, tube)
DEFINITION
Classification: 53/479
Of preformed nonfreestanding container deformed by contents (e.g., bag, tube):
(under subclass 477) Methods in which the cover comprises a flexible wall receptacle.
(1) Note. The cover material is usually thermoplastic material or paper.
SEE OR SEARCH THIS CLASS, SUBCLASS:
455, for methods of making and filling bags.
459, for methods of opening and filling bags, tubes, etc.
469, for methods of filling and closing bags, tubes, etc.
480, for methods of closing bags, tubes, etc., by steps other than temperature modification of the cover material.
