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| Number | Title | Issue Date |
| 4493747 | Method for insulating conductors with a crystalline plastic material An extrusion system is provided for covering a conductor (14) with a crystalline thermoplastic elastomer insulating material. The plastic material is tubed onto the conductor by apparatus which includes a core tube (61) that is mounted in an extruder cros... | 01/15/1985 |
| 4488918 | Non-slip plastic film This invention discloses a plastic film having a non-slip surface comprising spaced random patterns of rigid peaks and ridges formed by a second thermo-plastic layer coextruded with and bonded to the plastic film and rupturing the second layer during expa... | 12/18/1984 |
| 4484971 | Method and apparatus for making improved laminating film A method and apparatus for manufacturing a film suitable for use in lamination under heat and pressure. A plurality of resins is co-extruded into concentric annuli, the inner annulus being a polyester type resin, and at least one of the outer annuli consi... | 11/27/1984 |
| 4481058 | Heat-sealable laminar thermoplastic films A biaxially oriented polypropylene film is provided which exhibits improved heat-seal strength and good optical clarity. The polypropylene film is characterized by having on at least one surface thereof a continuous coating of a heat-sealable film layer c... | 11/06/1984 |
| 4478663 | Plastic sheet having high gloss and low coefficient of friction and method for producing the same A plastic sheet (13) having a surface with low friction and high gloss is produced by extruding a layer of thermoplastic and pressing it while hot against the surface of a chill roller (17). The surface of the chill roller (17) is characterized by being h... | 10/23/1984 |
| 4475971 | Method for forming strong cross-laminated films There is provided a method for forming a cross-laminated plastic film by (1) forming flat, composite, coextruded film having a higher melting layer and a lower melting layer, (2) orienting the composite film on a bias and (3) contacting lower melting surf... | 10/09/1984 |
| 4474634 | Process for producing a laminated film or sheet structure A laminated film or sheet structure composed of (i) an adhesive layer (A), (ii) synthetic resin film layers (B1) and (B2) monoaxially oriented in a direction oblique to the longitudinal direction of the film, said layers (B1 | 10/02/1984 |
| 4472227 | Process for producing oriented composite polyolefin resin films A process for producing an oriented composite polyolefin resin film which comprises melt-laminating a polyolefin resin sheet for a paper-like layer on at least one surface of a monoaxially stretched polyolefin resin sheet for a substrate layer, and then s... | 09/18/1984 |
| 4472228 | Cold drawn high-orientation multilayered film and process for manufacture of said film A high-orientation multilayered film incorporates at least one cold drawn, highly oriented resin layer excellent in mechanical strength and suitable mainly for use as packaging material. Because of its specific stratal construction which is highly adaptab... | 09/18/1984 |
| 4472330 | System and process for simultaneously orienting the films of a film laminate A method and system are disclosed for orienting a multilayer polymeric film structure by differentially heating different film layers thereof by dielectric heating and then molecular orienting the film layers at their respective optimal orientation temper... | 09/18/1984 |
| 4460631 | Sealable, biaxially stretched polypropylene film having high scratch resistance, and process for its manufacture Disclosed is a sealable, biaxially stretched polyethylene-coated polypropylene film, preferably manufactured as a flat film, which is not only extremely scratch-resistant but is also rapidly sealable, with good machine-running characteristics and high tra... | 07/17/1984 |
| 4454187 | Composite laminate material and process for making the same A composite laminate material and a process for making the same are provided, the process comprising the steps of providing an unbonded fibrous batt of desired thickness having a thermosetting binder material dispersed therethrough, applying a layer of de... | 06/12/1984 |
| 4439260 | Method and apparatus for forming cross-laminated thermoplastic film A method and apparatus for the forming of cross-laminated thermoplastic film, particularly from a supply roll of a layflat, highly melt-oriented tubular thermoplastic film. The layflat tubular film is advanced while concurrently being rotated about its lo... | 03/27/1984 |
| 4432820 | Process for production of polyester-polyolefin film laminates A process for the production of a permanently bonded polyester-polyolefin film laminate is disclosed herein. The process involves exposing the surface of polyester or polyolefin film to contact with a flame so as to prime the surface thereof and thereafte... | 02/21/1984 |
| 4419410 | Highly stereoregular films of improved surface characteristics and method of forming same A process for enhancing the degree of bloom of a polymer film structure containing a surface-modifying agent and the film structure resulting therefrom.... | 12/06/1983 |
| 4415608 | Continuous production of polymethylpentene membranes Gas separation membranes may be prepared in a continuous manner by passing a porous support which may, if so desired, be backed by a fabric through a solution of polymethylpentene dissolved in an organic solvent such as hexane. The support member is passe... | 11/15/1983 |
| 4407689 | Process for production of laminated member A laminated member comprising a metal foil or sheet (1) and a thermoplastic resin film (4) bonded together with an adhesive selected from a carboxyl group-containing polyolefin and a polyolefin based resin prepared by heat-compounding a carboxyl group-con... | 10/04/1983 |
| 4405400 | Laminated material The invention relates to a laminated material, the main layer of which consists of a molecular-oriented polyester material which has very good tensile strength characteristics and a sealing layer joined to the main layer of a modified polyester material o... | 09/20/1983 |
| 4398492 | Apparatus for applying an extruded strip to an inside tire surface Apparatus for gripping a tire bead, moving the tire vertically and axially over an extruder nozzle die to a position within the tire chamber where a continuous extruded strip is applied to an inside surface of the tire as the tire is rotated. The extruded... | 08/16/1983 |
| 4395459 | Reinforced laminates produced from crosslinkable thermoplastic olefin polymer material A process of producing reinforced laminates from crosslinkable thermoplastic olefin polymer material. In the process, a normally solid, high molecular weight crosslinkable thermoplastic olefin polymer containing a catalyst which reacts with and effects cr... | 07/26/1983 |
| 4391862 | Pasteurizable thermoplastic film and receptacle therefrom Disclosed is a multi-layer, heat shrinkable, thermoplastic packaging film which can be heat sealed to itself to provide strong seals at pasteurizing temperatures. The preferred film has four layers including, in order, a sealing surface layer comprising a... | 07/05/1983 |
| 4390385 | Heat sealable, multi-ply polypropylene film A heat sealable and shrinkable, coextruded, multi-layer packaging film having a propylene homopolymer base layer and a skin layer of a preferred blend of 60% to 80% propylene-ethylene copolymer with propylene homopolymer provides a sealing temperature ran... | 06/28/1983 |
| 4389438 | Process for preparing laminates A process for the preparation of laminates comprising the steps of (1) putting a thermoplastic resin sheet or film and a metal foil or sheet one upon another with a specific polyolefin type resin being interposed therebetween, (2) heating the thus interpo... | 06/21/1983 |
| 4388375 | Polyester based polarizer A polarizer having increased hydrolytic stability is produced by impregnating a polyvinyl alcohol substrate with an iodine containing composition and then subjecting the substrate to both concentrated infrared and ultraviolet radiation treatments sufficie... | 06/14/1983 |
| 4385954 | Method for applying binding agents to fibrous webs A method and system for applying a foamed binding agent to a fibrous web is disclosed. The invention is characterized by the use of an extruder having an upper lip extending 1/16 to 1/4 inch beyond the lower lip, and by the drawing of a vacuum beneath the... | 05/31/1983 |
| 4379729 | Method and apparatus for the production of composite sheet material and a sheet material produced thereby A method and apparatus for the production of a composite sheet material and a material produced thereby are described, a typical product being a lightweight permanent or temporary formwork sheet of accurate thickness and parallelism made from material inc... | 04/12/1983 |
| 4373002 | Laminated material The invention relates to a laminated material, the main layer of which consists of a molecular-oriented polyester material which has very good tensile strength characteristics and a sealing layer joined to the main layer of a modified polyester material o... | 02/08/1983 |
| 4367112 | Heat-sealable laminar thermoplastic films A biaxially oriented polypropylene film is provided which exhibits improved heat-seal strength and good optical clarity. The polypropylene film is characterized by having on at least one surface thereof a continuous coating of a heat-sealable film layer c... | 01/04/1983 |
| 4365716 | Peelable seal Containers for storing food, medicaments, blood, and the like having a peelable seal formed by sealing together an oxidized surface of a polyolefin film.... | 12/28/1982 |
| 4364783 | Ultrasonic end-capping of beta"-alumina tubes This invention comprises a method of ultrasonically end-capping a tubular green body which comprises a mixture of 40-60 volume percent sinterable beta"-alumina precursor particulate and 60-40 volume percent organic sacrificial binder wherein said sacrific... | 12/21/1982 |
| 4363844 | Metallized information carrying discs A coded information structure capable of being decoded electronically comprising a base and a first layer of an electrically conductive or electromagneted radiation reflective layer adhered to said base wherein said layer having coded information in the f... | 12/14/1982 |
| 4359506 | Tie layer for co-extruded acrylonitrile copolymers A synthetic resin laminated structure is produced by bonding together in a molten state a layer of a (I) nitrile barrier resin, (II) a layer of a polymer mixture comprising a nitrile barrier resin and a halogenated polyolefin, and (III) a layer of a therm... | 11/16/1982 |
| 4358334 | Forming an integral closure for a thermoplastic container An improved high speed cast process for fusing fasteners, with strips of film at their base, to separately extruded film or sheet stock for making containers with integral closure means. The process makes available multiple sets of male and female fastene... | 11/09/1982 |
| 4352702 | Method of making a thermoplastic receptacle having improved high temperature seal The high temperature strength of a heat seal which bonds irradiatively cross-linkable thermoplastic materials together to form a receptacle can be significantly improved by irradiating the receptacle after the seal has been formed. This technique is espec... | 10/05/1982 |
| 4345005 | Oriented polypropylene film substrate and method of manufacture An oriented polypropylene film substrate and method of manufacturing an oriented polypropylene film having enhanced adhesion to metallized coatings which comprises the steps of coextruding the film substrate having a homopolymer polypropylene core layer, ... | 08/17/1982 |
| 4337113 | Apparatus for manufacture of sleeves and/or pockets for separator plates Apparatus for manufacturing separator sleeves and/or pockets, for the reception of battery plates, seals the edge gaps of a sandwich of two separators and a plate with an extruded ribbon of plastics material. The sandwich is automatically assembled in an ... | 06/29/1982 |
| 4329196 | Method of making a three-dimensional laminate A heat-sensitive, three-dimensional thermoplastic layer is laminated to a thermoplastic substrate by a specific fusion bonding process which produces a laminate having substantially no thermal distortion. This process employs cooling to protect the three-... | 05/11/1982 |
| 4322260 | Process for the continuous extrusion forming of a plastic double-walled foam-core conduit The invention relates to a process for the continuous extrusion forming of a thermoplastic double-walled, foam-core conduit by the sequential steps of extrusion forming an inner plastic tube, evenly coating said inner tube with foam-core layer and extrusi... | 03/30/1982 |
| 4315878 | Manufacture of blanks for recording discs utilizing coextrusion and blanks and records made thereby It has been found that a layered recording disc having an inexpensive core layer and high quality recording groove-accepting outer layers can be made in a relatively simple manner through an application of the technique known as coextrusion, wherein a com... | 02/16/1982 |
| 4310366 | Resin caulker making The apparatus and method for making a resin caulker 10 begins with continuous extrusion of a resin cylinder 15. A multimandrel indexing machine 20 has a receiving station 22 positioned to align an empty mandrel 21 with extruded cylinder 15 so a leading en... | 01/12/1982 |
