US PATENT SUBCLASS 156 / 90
.~.~ Utilizing layer to prevent migration or bleeding between laminae

Current as of: June, 1999
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156 /   HD   ADHESIVE BONDING AND MISCELLANEOUS CHEMICAL MANUFACTURE

1  DF  METHODS {7}
60  DF  .~ Surface bonding and/or assembly therefor {93}
90.~.~ Utilizing layer to prevent migration or bleeding between laminae

DEFINITION

Classification: 156/90

(under subclass 60) Processes which includes the step of providing at least one lamina with a material to prevent exudation or flowing of an ingredient from one lamina into contact with another lamina.

(1) Note. The material utilized as the barrier may be a coating, another lamina or an ingredient of one of the lamina.

SEE OR SEARCH THIS CLASS, SUBCLASS:

289, for processes of utilizing a parting or release material to prevent adhesion of several laminae.

323, for processes of interposing subsequently removed flexible element between lamina and pressure surface.