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Class Information
Number: 264/173.12
Name: Plastic and nonmetallic article shaping or treating: processes > Forming continuous or indefinite length work > Layered, stratified traversely of length, or multiphase macrostructure containing material (e.g., conjugate, composite, islands-in-sea, core-sheath, etc.) > Having three or more layers of at least two different compositions > Melt extrusion (e.g., co-extrusion, etc.)
Description: Processes wherein the multi-layered, indefinite length body is formed by forcing a melt through a confining orifice whereby the cross-sectional area of the extruded portion corresponds to the dimensions of the orifice.










Sub-classes under this class:

Class Number Class Name Patents
264/173.15 Including subsequent reshaping (e.g., stretching, etc.) 198
264/173.14 Polyamide (e.g., nylon, etc.) or addition polymer of at least one monoethylenically unsaturated monomer (e.g., polyethylene, polypropylene, polystyrene, etc.) containing layer 205
264/173.13 Vinylidene chloride or fluoride containing layer 64


Patents under this class:
1 2 3 4 5 6

Patent Number Title Of Patent Date Issued
8679290 Exfoliation of graphene by multilayer coextrusion Mar. 25, 2014
8632706 Self-adhered single-sided slip-resistant material Jan. 21, 2014
8623250 Method for producing a multi-layered object Jan. 7, 2014
8568636 Multilayer film Oct. 29, 2013
8545971 Polymeric compositions comprising polylactic acid and methods of making and using same Oct. 1, 2013
8523551 Unvulcanized rubber extruder and process for producing unvulcanized rubber Sep. 3, 2013
8518308 Automated plumbing, wiring, and reinforcement Aug. 27, 2013
8501064 Manufacturing nanocomposites Aug. 6, 2013
8480836 Double-sided slip-resistant material and method of making same Jul. 9, 2013
8470222 Fibers formed from a blend of a modified aliphatic-aromatic copolyester and thermoplastic starch Jun. 25, 2013
8465759 Process for the preparation of a hot-melt extruded laminate Jun. 18, 2013
8460588 Cross directional zoned bicomponent films, film laminates, and systems and methods for manufacture of the same Jun. 11, 2013
8377354 Method of producing films by means of coextrusion blow-moulding Feb. 19, 2013
8361362 Method for producing expanding styrene polymer granules Jan. 29, 2013
8298464 Fabric for clothing and a production method thereof Oct. 30, 2012
8273276 Roller die preformer for wide extrusions Sep. 25, 2012
8252216 Method for the production of railway ties Aug. 28, 2012
8221890 Multilayer composite having a polyester layer and a protective layer Jul. 17, 2012
8153242 Multi-layer impact resistant bumper Apr. 10, 2012
8048351 Bio-pharmaceutical hose Nov. 1, 2011
8048352 Medical devices Nov. 1, 2011
8048353 Multilayer polymeric product based on polyethylene terephthalate and polycarbonate and its use as a building material Nov. 1, 2011
7998385 Method for producing multilayer stretch-molded article Aug. 16, 2011
7993559 Method of making thermal imaging elements Aug. 9, 2011
7976925 Cross-laminate of oriented films, method of manufacturing same, and coextrusion die suitable in the process Jul. 12, 2011
7972546 Layered composites Jul. 5, 2011
7968026 Three-dimensional bioresorbable scaffolds for tissue engineering applications Jun. 28, 2011
7951438 Biaxially oriented polylactic acid film with high barrier May. 31, 2011
7938999 High-strength fiber of biodegradable aliphatic polyester and process for producing the same May. 10, 2011
7910032 Process for manufacturing a flexible packaging laminate for filling liquids in pouches such as edible oil pouches Mar. 22, 2011
7906052 Reinforced ion-conductive membranes Mar. 15, 2011
7892475 Blends of polypropylene impact copolymers with other polymers Feb. 22, 2011
7883652 Polydiorganosiloxane polyoxamide copolymers Feb. 8, 2011
7882671 Multi-layer co-extruded roofing membrane Feb. 8, 2011
7858006 Apparatus and method for manufacturing laminated sheet Dec. 28, 2010
7854987 Extrusion coated biaxially oriented polypropylene film Dec. 21, 2010
7846544 (Dope-dyed) polyester core-sheath monofilament having specific core/sheath intrinsic viscosity Dec. 7, 2010
7824589 Multi-wall sheet without the triangle effect, coated by coextrusion Nov. 2, 2010
7811494 Cable manufacturing process Oct. 12, 2010
7803299 Extruded rubber profile, method for obtaining same and tire incorporating same Sep. 28, 2010
7754124 Method and apparatus for multi-stream metered extrusion Jul. 13, 2010
7754340 Masterbatch containing adhesive PMMA and its use for the production of polyolefin films Jul. 13, 2010
7722794 Method for producing a sealable biaxially oriented polypropylene film for packaging May. 25, 2010
7700019 Co-extrusion manufacturing process of thin film electrochemical cell for lithium polymer batteries and apparatus therefor Apr. 20, 2010
7678316 Coextruded profiled webs Mar. 16, 2010
7678315 Process for producing adhesive film Mar. 16, 2010
7678444 Thermoformed article made from renewable polymer and heat-resistant polymer Mar. 16, 2010
7674412 Method and apparatus for forming resin film Mar. 9, 2010
7670540 Apparatus for manufacturing balloon catheter and method the same Mar. 2, 2010
7655291 Smooth co-extruded polyester film including talc and method for preparing same Feb. 2, 2010

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