GB1231569A - - Google Patents

Info

Publication number
GB1231569A
GB1231569A GB1231569DA GB1231569A GB 1231569 A GB1231569 A GB 1231569A GB 1231569D A GB1231569D A GB 1231569DA GB 1231569 A GB1231569 A GB 1231569A
Authority
GB
United Kingdom
Prior art keywords
core layer
additive
polypropylene
layers
additives
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Publication of GB1231569A publication Critical patent/GB1231569A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • B29C48/335—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B29C48/21—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/305—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets
    • B29C48/307—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets specially adapted for bringing together components, e.g. melts within the die

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Laminated Bodies (AREA)

Abstract

1,231,569. Laminated films with additives. HERCULES Inc. 25 Sept., 1969 [8 Oct., 1968], No. 47260/69. Heading B5B. Thermoplastic synthetic resin films containing additives, normally solid but volatile at extrusion temperature, are made by coextruding into contact with each other in the melt a core layer containing substantially all of said additive and a surface layer on each surface of said core layer containing substantially none of said additive. The laminated film may be extruded in flat or tubular form and may be subsequently stretched to orient at least one of its layers. The core layer and surface layers (which latter may comprise 20 to 80% of the total thickness of the film) may be of the same material. The core layer may contain from 0À05 to 0À3% by weight (of that layer) of the additive, which may be an antistatic agent. The core layer is preferably polypropylene and the surface layers preferably an olefin polymer or copolymer having a lower melting point than polypropylene. The laminate is preferably ¢ to 20 mils thick. Suitable materials for the film layers are the polyolefins such as polyethylene and polypropylene, polystyrene, polyethylene terephthalate, polyvinyl chloride and polyvinyl acetate. Suitable additives are antistatics and slip agents (e.g. glycerol tristearate, erucamide, stearamide, oleamide and polyethylene glycol monostearate); antacids (e.g. calcium stearate); plasticizers (e.g. castor oil, dioctyl adipate and mineral oil); and stabilizers (e.g. dilauryl thiodipropionate, dibutyl-p-cresol and other phenolic antioxidants).
GB1231569D 1968-10-08 1969-09-25 Expired GB1231569A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US76598568A 1968-10-08 1968-10-08

Publications (1)

Publication Number Publication Date
GB1231569A true GB1231569A (en) 1971-05-12

Family

ID=25075058

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1231569D Expired GB1231569A (en) 1968-10-08 1969-09-25

Country Status (2)

Country Link
US (1) UST861034I4 (en)
GB (1) GB1231569A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59133040A (en) * 1982-12-04 1984-07-31 レ−ム・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング Multilayer slab board with hollow chamber
EP0444917A2 (en) * 1990-03-01 1991-09-04 W.R. Grace & Co.-Conn. Packaging film containing an additive
US5324467A (en) * 1989-09-22 1994-06-28 Hercules Incorporated Process for preparation of oriented multilayer laminate film
WO1995023571A1 (en) * 1994-03-01 1995-09-08 The Procter & Gamble Company Process for producing a surfactant treated, formed, polymeric web
AU734099B2 (en) * 1994-03-01 2001-06-07 Procter & Gamble Company, The Process for producing a surfactant treated, formed, polymeric web
US20110209760A1 (en) * 2007-10-04 2011-09-01 Antonio Bonucci Method for manufacturing photovoltaic panels by the use of a polymeric tri-layer comprising a composite getter system

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59133040A (en) * 1982-12-04 1984-07-31 レ−ム・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング Multilayer slab board with hollow chamber
JPH0469055B2 (en) * 1982-12-04 1992-11-05 Roehm Gmbh
US5324467A (en) * 1989-09-22 1994-06-28 Hercules Incorporated Process for preparation of oriented multilayer laminate film
EP0444917A2 (en) * 1990-03-01 1991-09-04 W.R. Grace & Co.-Conn. Packaging film containing an additive
EP0444917A3 (en) * 1990-03-01 1992-03-04 W.R. Grace & Co.-Conn. Packaging film containing an additive
AU646013B2 (en) * 1990-03-01 1994-02-03 Cryovac, Inc. Packaging film containing an additive
US5306745A (en) * 1990-03-01 1994-04-26 W. R. Grace & Co.-Conn. Composition for a packaging film containing an additive
WO1995023571A1 (en) * 1994-03-01 1995-09-08 The Procter & Gamble Company Process for producing a surfactant treated, formed, polymeric web
US5520875A (en) * 1994-03-01 1996-05-28 The Procter & Gamble Company Process for producing a surfactant treated, formed, polymeric web
AU734099B2 (en) * 1994-03-01 2001-06-07 Procter & Gamble Company, The Process for producing a surfactant treated, formed, polymeric web
US20110209760A1 (en) * 2007-10-04 2011-09-01 Antonio Bonucci Method for manufacturing photovoltaic panels by the use of a polymeric tri-layer comprising a composite getter system
US9595626B2 (en) * 2007-10-04 2017-03-14 Saes Getters S.P.A. Method for manufacturing photovoltaic panels by the use of a polymeric tri-layer comprising a composite getter system

Also Published As

Publication number Publication date
UST861034I4 (en) 1969-04-15

Similar Documents

Publication Publication Date Title
US4590125A (en) Heat-sealable multi-layer film structures and methods of forming the same
GB1294924A (en)
ES328596A1 (en) A method of manufacturing a film for packaging. (Machine-translation by Google Translate, not legally binding)
GB1416357A (en) Adhesive tapes
ES465218A1 (en) Laminated olefinic polymer sheets for packaging
GB1392666A (en) Shrinkable film having at least two layers
US3595735A (en) Blown tubular films
ES483353A1 (en) Laminar thermoplastic film constructions
ATE70493T1 (en) MULTILAYER POLYOLEFIN FILMS.
GB1231569A (en)
GB1096064A (en) Improvements in or relating to laminates
GB1379106A (en) Rigid five layer formed sheet structures
GB1385196A (en) Process for the production of laminates
GB1352439A (en) Production of synthetic papers
GB1527611A (en) Containers
GB1247442A (en) Laminated films of synthetic organic thermoplastic materials
GB1455596A (en) Laminates
GB1205327A (en) Process for the production of laminates
GB1309011A (en) Multilayer laminated sheet
GB1190698A (en) Process for the Production of Stretched Films Consisting of Synthetic Thermoplastic High-Polymer Material.
NZ516464A (en) Polymeric film structures useful as shrink bags
JP2707120B2 (en) Anti-slip multi-layer film or sheet
JP4366941B2 (en) Sealant film for laminating
SU413736A1 (en) Laminate
SE8001773L (en) METALLIZED BOND FILMS COVERING A POLYOLEFIN FILM AND A POLYCHLORVINYL FILM

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years