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Class Information
Number: 264/171.27
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.) > Producing hollow composite > Having three or more layers of at least two different materials
Description: Processes directed to a hollow composite which has more than two layers wherein the material comprising at least one of the layers is dissimilar.










Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
5641445 Apparatus and method for extruding multi-layered fuel tubing Jun. 24, 1997
5580405 Extrusion of laminate pipes Dec. 3, 1996
5538411 Spiral fed multi-layer tubular die Jul. 23, 1996
5538411 Spiral fed multi-layer tubular die Jul. 23, 1996
5460772 Process for multilayer blow molding Oct. 24, 1995
5460771 Process for producing corrugated multi-layer tubing having layers of differing plastic characteristics Oct. 24, 1995
5417997 Process of making reinforced porous pipe May. 23, 1995
5415440 Corrugated spiral pipe with joint, process of producing the same, and method of providing sealing connection between corrugated spiral pipes May. 16, 1995
5391334 Method for producing reinforced hose Feb. 21, 1995
5350471 Production of cross-laminated film from tube Sep. 27, 1994
5348536 Coextruded catheter and method of forming Sep. 20, 1994
5322658 Method of making thermoplastic composite layered squeeze tube Jun. 21, 1994
5292472 Coextrusion apparatus and method with rotating cord guidance Mar. 8, 1994
5186875 Method of manufacturing of a novel hollow multi-layer article Feb. 16, 1993
5147594 Extruding vinylidene chloride copolymer flexible packaging film Sep. 15, 1992
5143677 Co-extrusions methods Sep. 1, 1992
5133911 Multilayer parison extruder and method Jul. 28, 1992
5106545 Oriented polymeric films and process for enhanced orientation of polymeric films Apr. 21, 1992
5098790 Multilayer, UV-radiation stabilized polycarbonate panel Mar. 24, 1992
5094799 Process for producing biaxially oriented nylon film Mar. 10, 1992
5085821 Preparation of multi-layer drawn polyester bottles Feb. 4, 1992
5084315 Lubricious coatings, medical articles containing same and method for their preparation Jan. 28, 1992
5078942 Coextrusion method and apparatus Jan. 7, 1992
5071604 Multi-layer parison forming apparatus and process Dec. 10, 1991
5069612 Modular tubular extrusion head Dec. 3, 1991
5062782 Coextrusion apparatus for varying the inner and/or outer profile of a tubular extrudate Nov. 5, 1991
5047200 Method of making a fire hose Sep. 10, 1991
5035596 Coextrusion head Jul. 30, 1991
5034179 Method of and apparatus for discontinuous manufacture of multilayer, co-extruded, hose-like preforms from thermoplastics material Jul. 23, 1991
5017117 Extruder nozzle May. 21, 1991
5004578 Process and apparatus for producing hollow bodies of thermoplastic material Apr. 2, 1991
4988465 Manufacture of multilayer film containing very low density polyethylene Jan. 29, 1991
4985188 Process for producing cross-linked laminated film Jan. 15, 1991
4976898 Process for making puncture resistant, heat-shrinkable films containing very low density polyethylene Dec. 11, 1990
4950436 Process for producing hoses of high impermeability to gas and vapor Aug. 21, 1990
4937035 Method for manufacturing large-volume hollow bodies of plastics material having multiple-layer walls Jun. 26, 1990
4892442 Prelubricated innerduct Jan. 9, 1990
4891179 Method of consolidating composite articles Jan. 2, 1990
4889477 Extruder head Dec. 26, 1989
4882101 Method of producing a reinforced rubber hose by using a plastic mandrel Nov. 21, 1989
4871413 Apparatus for manufacturing tubular lining material Oct. 3, 1989
4865780 Process for producing irradiated multilayer film for primal meat packaging Sep. 12, 1989
4863541 Apparatus and method for manufacturing heat-shrinkable sleeve using solid core Sep. 5, 1989
4861526 Method of making a laminate using heat sealable barrier material for improved juice packaging (Evoh) Aug. 29, 1989
4859380 Method and apparatus for producing fiber-reinforced rubber hose Aug. 22, 1989
4846648 Triple-wall foam coextrusion apparatus Jul. 11, 1989
4832589 Head for the circular coextrusion of a plurality of thermo-plastic material layers May. 23, 1989
4828780 Method for encapsulating extruding materials May. 9, 1989
4824618 Coextrusion blowmolding process Apr. 25, 1989
4803035 Method for making composite films Feb. 7, 1989

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