US PATENT SUBCLASS 428 / 36.7
.~.~.~ Vapor or gas barrier, polymer derived from vinyl chloride or vinylidene chloride, or polymer containing a vinyl alcohol unit is sandwiched between layers (continuous layer)

Current as of: June, 1999
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428 /   HD   STOCK MATERIAL OR MISCELLANEOUS ARTICLES

34.1  DF  HOLLOW OR CONTAINER TYPE ARTICLE (E.G., TUBE, VASE, ETC.) {7}
35.7  DF  .~ Polymer or resin containing (i.e., natural or synthetic) {9}
36.6  DF  .~.~ Contains vapor or gas barrier, polymer derived from vinyl chloride or vinylidene chloride, or polymer containing a vinyl alcohol unit {1}
36.7.~.~.~ Vapor or gas barrier, polymer derived from vinyl chloride or vinylidene chloride, or polymer containing a vinyl alcohol unit is sandwiched between layers (continuous layer)

DEFINITION

Classification: 428/36.7

Vapor or gas barrier, polymer derived from vinyl chloride or

vinylidene chloride, or polymer containing a vinyl alcohol unit is sandwiched between layers (continuous layer):

(under subclass 36.6) Article* where the vapor or gas barrier, the polymer derived from vinyl chloride or vinylidene chloride, or the polymer containing a vinyl alcohol unit is found in a layer sandwiched between two other separate and distinct layers.