US PATENT SUBCLASS 264 / 171.1
.~ Layered, stratified traversely of length, or multiphase macrostructure containing material (e.g., conjugate, composite, islands-in-sea, core-sheath, etc.)

Current as of: June, 1999
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264 /   HD   PLASTIC AND NONMETALLIC ARTICLE SHAPING OR TREATING: PROCESSES

165  DF  FORMING CONTINUOUS OR INDEFINITE LENGTH WORK {8}
171.1.~ Layered, stratified traversely of length, or multiphase macrostructure containing material (e.g., conjugate, composite, islands-in-sea, core-sheath, etc.) {8}
171.11  DF  .~.~> Including extrusion on or about plural discrete end-to-end or discrete side-by-side preforms (e.g., definite length preform, etc.)
171.12  DF  .~.~> Hollow preform
171.13  DF  .~.~> Utilizing indefinite length preform {4}
171.26  DF  .~.~> Producing hollow composite {4}
172.11  DF  .~.~> Producing composite strand, filament, or thread {6}
172.19  DF  .~.~> Producing indefinite length article by depositing material on endless forming surface (e.g., endless belts, rollers, etc.) {1}
173.11  DF  .~.~> Having three or more layers of at least two different compositions {1}
173.16  DF  .~.~> Melt co-extrusion (e.g., two layers, etc.) {4}

DEFINITION

Classification: 264/171.1

Layered, stratified transversely of length, or multiphase macrostructure containing material (e.g., conjugate, composite, islands-in-sea, sheath-core, etc.):

(under subclass 165) Processes directed to methods of forming indefinite or running length articles comprising plural diverse elements or components in a contiguous relationship in a cross-section taken through said article, said contiguity extending for at least a portion of the length of the article.

(1)

Note. This subclass does not include the simultaneous extrusion of a plurality of filaments which are then merely gathered into a yarn or thread in a parallel or contiguous relationship.

(2) Note. Where discrete elements are axially aligned on a continuous base, said elements being either spaced or in butt relationship, the patent is properly classified in this subclass.

(3) Note. In the formation of indefinite length filaments, particularly viscose, filaments with differentiated "skin" and "core" which may be produced from a homogeneous material

and such processes will be classified below in appropriate subclasses according to method or material employed.

(4) Note. Processes of forming "sheath-core" or "islands in the sea" composites, strands, or filaments are properly classified below in appropriate subclasses.

SEE OR SEARCH THIS CLASS, SUBCLASS: 73+, for forming a color variegated running or indefinite length article.

103, for gathering of extruded filaments into a yarn or thread.

135, for processes including coating or impregnating a preform combined with shaping against and uniting of plastic material to said preform.

167, for formation of continuous length articles of irregular cross-sectional area which are nonlayered or nonstratified, i.e., of monolithic construction.

252, for molding plural parts to an edge of a preform, e.g., slide fastener elements.

172.13, for composite, strand, or filament having island in the sea.

172.15, for sheath-core composites strands or filaments

SEE OR SEARCH CLASS

156, Adhesive Bonding and Miscellaneous Chemical Manufacture, subclasses 167+ and 244.11+ for formation of a lamina or laminae by extrusion followed by adhesive bonding to form a laminate.