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
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).
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)
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 |
-
1968
- 1968-10-08 US US861034D patent/UST861034I4/en active Pending
-
1969
- 1969-09-25 GB GB1231569D patent/GB1231569A/en not_active Expired
Cited By (12)
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 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PE20 | Patent expired after termination of 20 years |