GB2282100A - Polymeric articles and materials - Google Patents
Polymeric articles and materialsInfo
- Publication number
- GB2282100A GB2282100A GB9421384A GB9421384A GB2282100A GB 2282100 A GB2282100 A GB 2282100A GB 9421384 A GB9421384 A GB 9421384A GB 9421384 A GB9421384 A GB 9421384A GB 2282100 A GB2282100 A GB 2282100A
- Authority
- GB
- United Kingdom
- Prior art keywords
- water
- die
- relatively water
- layer
- polyvinyl alcohol
- 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.)
- Withdrawn
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
- B29C48/337—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles the components merging at a common location
- B29C48/338—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles the components merging at a common location using a die with concentric parts, e.g. rings, cylinders
-
- 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
- B29C48/14—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the particular extruding conditions, e.g. in a modified atmosphere or by using vibration
- B29C48/147—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the particular extruding conditions, e.g. in a modified atmosphere or by using vibration after the die nozzle
- B29C48/1472—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the particular extruding conditions, e.g. in a modified atmosphere or by using vibration after the die nozzle at the die nozzle exit zone
-
- 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
-
- 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
- B29C2791/00—Shaping characteristics in general
- B29C2791/004—Shaping under special conditions
- B29C2791/007—Using fluid under pressure
-
- 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
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2029/00—Use of polyvinylalcohols, polyvinylethers, polyvinylaldehydes, polyvinylketones or polyvinylketals or derivatives thereof as moulding material
- B29K2029/04—PVOH, i.e. polyvinyl alcohol
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2031/00—Use of polyvinylesters or derivatives thereof as moulding material
- B29K2031/04—Polymers of vinyl acetate, e.g. PVAc, i.e. polyvinyl acetate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0037—Other properties
- B29K2995/0056—Biocompatible, e.g. biopolymers or bioelastomers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0037—Other properties
- B29K2995/0059—Degradable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0037—Other properties
- B29K2995/0059—Degradable
- B29K2995/006—Bio-degradable, e.g. bioabsorbable, bioresorbable or bioerodible
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0037—Other properties
- B29K2995/0092—Other properties hydrophilic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2007/00—Flat articles, e.g. films or sheets
- B29L2007/008—Wide strips, e.g. films, webs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2009/00—Layered products
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/769—Sanitary equipment
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Laminated Bodies (AREA)
- Materials For Medical Uses (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Graft Or Block Polymers (AREA)
- Peptides Or Proteins (AREA)
Abstract
Improvements in the manufacture of multi-layer organic polymer composites are described, particularly applicable to composites including adjacent layers of a relatively water-soluble polymer (e.g. partially hydrolysed polyvinyl alcohol) and a relatively water-insoluble polymer (e.g. fully hydrolysed polyvinyl alcohol). The extruded layers are brought together within the die housing or by nipping means external to the die, or the relatively water-insoluble layer may be coated onto the relatively water-soluble layer. Specific designs of die are claimed, as are specific extrudable compositions and apparatus for conveying the same to the dies. The invention makes available for the first time a range of articles in which plastic parts are water-compatible in normal use but are completely degradable on contact with water during disposal, such as WC-disposable sanitary articles and water-degradable rigid containers for oil and petrol.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB929208834A GB9208834D0 (en) | 1992-04-23 | 1992-04-23 | Coextrusion die,method and apparatus |
GB939305322A GB9305322D0 (en) | 1993-03-16 | 1993-03-16 | Coextrusion method and apparatus |
PCT/GB1993/000854 WO1993022125A1 (en) | 1992-04-23 | 1993-04-23 | Polymeric articles and materials |
Publications (2)
Publication Number | Publication Date |
---|---|
GB9421384D0 GB9421384D0 (en) | 1994-12-21 |
GB2282100A true GB2282100A (en) | 1995-03-29 |
Family
ID=26300766
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9421384A Withdrawn GB2282100A (en) | 1992-04-23 | 1993-04-23 | Polymeric articles and materials |
Country Status (13)
Country | Link |
---|---|
EP (1) | EP0644823A1 (en) |
JP (1) | JPH07508688A (en) |
KR (1) | KR950701272A (en) |
AU (1) | AU4021493A (en) |
BR (1) | BR9306286A (en) |
CA (1) | CA2134101A1 (en) |
CZ (1) | CZ261594A3 (en) |
FI (1) | FI944958A (en) |
GB (1) | GB2282100A (en) |
HU (1) | HUT70712A (en) |
NO (1) | NO944003L (en) |
SK (1) | SK127794A3 (en) |
WO (1) | WO1993022125A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6838504B1 (en) | 1998-05-06 | 2005-01-04 | Solucorp Industries Ltd. | Integrated fixation systems |
US8381099B2 (en) | 2005-09-08 | 2013-02-19 | Hewlett-Packard Development Company, L.P. | Flows for variable-data printing |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2160682C (en) * | 1993-04-29 | 2001-08-14 | Travis W. Honeycutt | Method of disposal of hot water soluble garments and like fabrics |
GB9415720D0 (en) * | 1994-08-03 | 1994-09-21 | Environmental Polymers Ltd | Extrusion and moulding apparatus and method |
US5472518A (en) * | 1994-12-30 | 1995-12-05 | Minnesota Mining And Manufacturing Company | Method of disposal for dispersible compositions and articles |
US6579814B1 (en) | 1994-12-30 | 2003-06-17 | 3M Innovative Properties Company | Dispersible compositions and articles of sheath-core microfibers and method of disposal for such compositions and articles |
IES80667B2 (en) * | 1997-04-15 | 1998-11-18 | Solplax Limited | Controlled degradation coatings and a method for their manufacture |
US5965624A (en) * | 1997-06-27 | 1999-10-12 | Eval Company Of America | Self purging EVOH compositions, and methods |
GB0228618D0 (en) * | 2002-12-07 | 2003-01-15 | Grt Ltd | Method & apparatus for packing powdered or granular material |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2121565A1 (en) * | 1971-01-04 | 1972-08-25 | Kautex Werke Gmbh | |
US4094947A (en) * | 1976-09-03 | 1978-06-13 | The Dow Chemical Company | Multilayer coextrusion process for producing selective reflectivity |
US4244914A (en) * | 1976-02-18 | 1981-01-13 | Montedison S.P.A. | Process for preparing gas-, vapor- and odor-proof coupled and coextruded multilayer articles of thermoplastic material and closed-surface bodies comprising the same |
US4407881A (en) * | 1981-05-30 | 1983-10-04 | Dai Nippon Insatsu Kabushiki Kaisha | Decorative sheets and processes for producing decorative articles by using the same |
WO1992001556A1 (en) * | 1990-07-24 | 1992-02-06 | Bhp Plastics Limited | Composite polymeric articles |
WO1992015454A1 (en) * | 1991-03-01 | 1992-09-17 | Clopay Corporation | A compostable polymeric composite sheet and method of making or composting same |
-
1993
- 1993-04-23 AU AU40214/93A patent/AU4021493A/en not_active Abandoned
- 1993-04-23 GB GB9421384A patent/GB2282100A/en not_active Withdrawn
- 1993-04-23 CA CA002134101A patent/CA2134101A1/en not_active Abandoned
- 1993-04-23 CZ CZ942615A patent/CZ261594A3/en unknown
- 1993-04-23 SK SK1277-94A patent/SK127794A3/en unknown
- 1993-04-23 HU HU9403063A patent/HUT70712A/en unknown
- 1993-04-23 KR KR1019940703822A patent/KR950701272A/en not_active Application Discontinuation
- 1993-04-23 WO PCT/GB1993/000854 patent/WO1993022125A1/en not_active Application Discontinuation
- 1993-04-23 BR BR9306286A patent/BR9306286A/en not_active Application Discontinuation
- 1993-04-23 EP EP93909387A patent/EP0644823A1/en not_active Withdrawn
- 1993-04-23 JP JP5519047A patent/JPH07508688A/en active Pending
-
1994
- 1994-10-21 NO NO944003A patent/NO944003L/en unknown
- 1994-10-21 FI FI944958A patent/FI944958A/en not_active Application Discontinuation
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2121565A1 (en) * | 1971-01-04 | 1972-08-25 | Kautex Werke Gmbh | |
US4244914A (en) * | 1976-02-18 | 1981-01-13 | Montedison S.P.A. | Process for preparing gas-, vapor- and odor-proof coupled and coextruded multilayer articles of thermoplastic material and closed-surface bodies comprising the same |
US4094947A (en) * | 1976-09-03 | 1978-06-13 | The Dow Chemical Company | Multilayer coextrusion process for producing selective reflectivity |
US4407881A (en) * | 1981-05-30 | 1983-10-04 | Dai Nippon Insatsu Kabushiki Kaisha | Decorative sheets and processes for producing decorative articles by using the same |
WO1992001556A1 (en) * | 1990-07-24 | 1992-02-06 | Bhp Plastics Limited | Composite polymeric articles |
WO1992015454A1 (en) * | 1991-03-01 | 1992-09-17 | Clopay Corporation | A compostable polymeric composite sheet and method of making or composting same |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6838504B1 (en) | 1998-05-06 | 2005-01-04 | Solucorp Industries Ltd. | Integrated fixation systems |
US8381099B2 (en) | 2005-09-08 | 2013-02-19 | Hewlett-Packard Development Company, L.P. | Flows for variable-data printing |
Also Published As
Publication number | Publication date |
---|---|
KR950701272A (en) | 1995-03-23 |
HU9403063D0 (en) | 1995-01-30 |
EP0644823A1 (en) | 1995-03-29 |
WO1993022125A1 (en) | 1993-11-11 |
GB9421384D0 (en) | 1994-12-21 |
FI944958A0 (en) | 1994-10-21 |
NO944003D0 (en) | 1994-10-21 |
FI944958A (en) | 1994-12-12 |
NO944003L (en) | 1994-12-20 |
CZ261594A3 (en) | 1995-06-14 |
HUT70712A (en) | 1995-10-30 |
AU4021493A (en) | 1993-11-29 |
JPH07508688A (en) | 1995-09-28 |
CA2134101A1 (en) | 1993-11-11 |
BR9306286A (en) | 1998-06-30 |
SK127794A3 (en) | 1995-07-11 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |