ZA895056B - Lettuce packaging film - Google Patents
Lettuce packaging filmInfo
- Publication number
- ZA895056B ZA895056B ZA895056A ZA895056A ZA895056B ZA 895056 B ZA895056 B ZA 895056B ZA 895056 A ZA895056 A ZA 895056A ZA 895056 A ZA895056 A ZA 895056A ZA 895056 B ZA895056 B ZA 895056B
- Authority
- ZA
- South Africa
- Prior art keywords
- packaging film
- lettuce packaging
- lettuce
- film
- packaging
- Prior art date
Links
- 240000008415 Lactuca sativa Species 0.000 title 1
- 235000003228 Lactuca sativa Nutrition 0.000 title 1
- 229920006280 packaging film Polymers 0.000 title 1
- 239000012785 packaging film Substances 0.000 title 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/306—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl acetate or vinyl alcohol (co)polymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
- B32B37/15—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state
- B32B37/153—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state at least one layer is extruded and immediately laminated while in semi-molten state
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/0008—Electrical discharge treatment, e.g. corona, plasma treatment; wave energy or particle radiation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2305/00—Condition, form or state of the layers or laminate
- B32B2305/02—Cellular or porous
- B32B2305/026—Porous
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/31—Heat sealable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2310/00—Treatment by energy or chemical effects
- B32B2310/14—Corona, ionisation, electrical discharge, plasma treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2323/00—Polyalkenes
- B32B2323/04—Polyethylene
- B32B2323/046—LDPE, i.e. low density polyethylene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2323/00—Polyalkenes
- B32B2323/10—Polypropylene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2331/00—Polyvinylesters
- B32B2331/04—Polymers of vinyl acetate, e.g. PVA
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
- Y10T428/1334—Nonself-supporting tubular film or bag [e.g., pouch, envelope, packet, etc.]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24273—Structurally defined web or sheet [e.g., overall dimension, etc.] including aperture
- Y10T428/24322—Composite web or sheet
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/28—Web or sheet containing structurally defined element or component and having an adhesive outermost layer
- Y10T428/2813—Heat or solvent activated or sealable
- Y10T428/2817—Heat sealable
- Y10T428/2826—Synthetic resin or polymer
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/28—Web or sheet containing structurally defined element or component and having an adhesive outermost layer
- Y10T428/2848—Three or more layers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/28—Web or sheet containing structurally defined element or component and having an adhesive outermost layer
- Y10T428/2852—Adhesive compositions
- Y10T428/2878—Adhesive compositions including addition polymer from unsaturated monomer
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31—Surface property or characteristic of web, sheet or block
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31855—Of addition polymer from unsaturated monomers
- Y10T428/31909—Next to second addition polymer from unsaturated monomers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31855—Of addition polymer from unsaturated monomers
- Y10T428/31909—Next to second addition polymer from unsaturated monomers
- Y10T428/31913—Monoolefin polymer
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31855—Of addition polymer from unsaturated monomers
- Y10T428/31909—Next to second addition polymer from unsaturated monomers
- Y10T428/31928—Ester, halide or nitrile of addition polymer
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Thermal Sciences (AREA)
- Laminated Bodies (AREA)
- Wrappers (AREA)
- Packages (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/240,994 US4935271A (en) | 1988-09-06 | 1988-09-06 | Lettuce packaging film |
Publications (1)
Publication Number | Publication Date |
---|---|
ZA895056B true ZA895056B (en) | 1990-04-25 |
Family
ID=22908790
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ZA895056A ZA895056B (en) | 1988-09-06 | 1989-07-03 | Lettuce packaging film |
Country Status (7)
Country | Link |
---|---|
US (1) | US4935271A (xx) |
EP (1) | EP0358461A3 (xx) |
JP (1) | JP2952290B2 (xx) |
AU (1) | AU627758B2 (xx) |
CA (1) | CA1290675C (xx) |
IL (1) | IL90629A (xx) |
ZA (1) | ZA895056B (xx) |
Families Citing this family (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2221691B (en) * | 1988-07-15 | 1992-04-15 | Courtaulds Films & Packaging | Polymeric films for the storage or packing of plant material |
US5296291A (en) * | 1989-05-05 | 1994-03-22 | W. R. Grace & Co.-Conn. | Heat resistant breathable films |
DE3931451A1 (de) * | 1989-09-21 | 1991-04-11 | Hoechst Ag | Dimensionsstabiler verbundkoerper, verfahren zu seiner herstellung und seine verwendung |
CA2048296C (en) * | 1990-08-13 | 2002-09-24 | Henry G. Schirmer | Blends of polypropylene and ethylene copolymer and films made from the blend |
WO1992003356A1 (en) * | 1990-08-13 | 1992-03-05 | Kohjin Co., Ltd. | Food packaging bag |
US5110677A (en) * | 1990-10-01 | 1992-05-05 | W. R. Grace & Co.-Conn. | Lettuce packaging film |
ZA918226B (en) * | 1990-11-16 | 1992-07-29 | Grace W R & Co | Cheese packaging laminate |
DE69113449T2 (de) * | 1991-05-23 | 1996-03-07 | Standipack Private Ltd | Lagerungs- und Ausgabebeutel für Schmieröl. |
CA2130896C (en) * | 1992-04-27 | 2004-10-05 | Jose Porchia | Microperforated film and packaging bag made therefrom |
US5885699A (en) * | 1992-08-27 | 1999-03-23 | Cryovac, Inc. | Multilayer thermoplastic packaging film |
US5766773A (en) * | 1992-10-30 | 1998-06-16 | Ventilair Films, Inc. | Laminated stretch wrap film adhered by cling forces |
US5935681A (en) * | 1992-10-30 | 1999-08-10 | Paulett; Harry K. | Perforated stretch wrap film |
US5484654A (en) * | 1993-03-12 | 1996-01-16 | W.R. Grace & Co. | Packaging material and method of making a packaging material |
US5322726A (en) * | 1993-03-19 | 1994-06-21 | James River Paper Company, Inc. | Coextruded film having high oxygen transmission rate |
US6060136A (en) | 1995-10-13 | 2000-05-09 | Cryovac, Inc. | High modulus oxygen-permeable multilayer film |
US5491019A (en) * | 1994-03-28 | 1996-02-13 | W. R. Grace & Co.-Conn. | Oxygen-permeable multilayer film |
US6420625B1 (en) | 1997-09-12 | 2002-07-16 | Kimberly-Clark Worldwide, Inc. | Breathable, liquid-impermeable, apertured film/nonwoven laminate and process for making same |
US6635334B1 (en) * | 2000-08-08 | 2003-10-21 | 3M Innovative Properties Company | Cloth-like polymeric films |
AU2002225655B2 (en) * | 2000-11-22 | 2005-04-07 | The Procter & Gamble Company | Multi-laminae food storage wrap |
ES2256497T3 (es) | 2001-07-23 | 2006-07-16 | International Trex Limited | Pelicula para embalaje. |
US7138169B2 (en) * | 2003-03-05 | 2006-11-21 | 3M Innovative Properties Company | Cloth-like polymeric film with directional tear |
GB0316708D0 (en) | 2003-07-16 | 2003-08-20 | Dupont Teijin Films Us Ltd | Polymeric film |
US6846876B1 (en) * | 2003-07-16 | 2005-01-25 | Adherent Laboratories, Inc. | Low odor, light color, disposable article construction adhesive |
GB0500906D0 (en) | 2005-01-17 | 2005-02-23 | Dupont Teijin Films Us Ltd | Coextruded polymeric film |
US7910794B2 (en) | 2007-03-05 | 2011-03-22 | Adherent Laboratories, Inc. | Disposable diaper construction and adhesive |
DE102009001326A1 (de) | 2009-03-04 | 2010-09-09 | Robert Bosch Gmbh | Verfahren und Vorrichtung zum Betreiben einer Brennkraftmaschine mit einem Kompressor zur Verdichtung der der Brennkraftmaschine zugeführten Luft |
DE102010031362A1 (de) * | 2010-07-15 | 2012-01-19 | Robert Bosch Gmbh | Verbundfolie, Verfahren zur Herstellung einer Verbundfolie, eines aus wenigstens einer Verbundfolie bestehenden Folienverbundes sowie Vorrichtung zur Herstellung einer Verbundfolie |
JP6870214B2 (ja) * | 2016-05-19 | 2021-05-12 | 三菱ケミカル株式会社 | 青果物包装用フィルム、それを用いた青果物包装袋 |
GB202013061D0 (en) | 2020-08-21 | 2020-10-07 | Dupont Teijin Films Us Lp | Breathable composite polymeric films |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3558330A (en) * | 1967-09-21 | 1971-01-26 | Dow Chemical Co | Packaging film and package |
JPS5119081A (en) * | 1974-08-08 | 1976-02-16 | Dainippon Printing Co Ltd | Hosoyo 4 sosekisokozobutsu |
US4178401A (en) * | 1978-01-09 | 1979-12-11 | W. R. Grace & Co. | Packaging film comprising a blended self-welding layer |
CH639312A5 (en) * | 1979-04-02 | 1983-11-15 | Perlen Papierfabrik | Process for producing a closure lid film |
US4439478A (en) * | 1980-05-23 | 1984-03-27 | W. R. Grace & Co., Cryovac Division | Heat sealable, multi-ply polypropylene film |
FR2571029B1 (fr) * | 1984-10-03 | 1987-04-30 | Socar | Film multicouche, notamment pour emballages de produits alimentaires frais |
JPS61202843A (ja) * | 1985-03-06 | 1986-09-08 | 三菱瓦斯化学株式会社 | 通気性包装材料の製造方法 |
JP2524140B2 (ja) * | 1987-01-09 | 1996-08-14 | 日東電工株式会社 | 通気性袋用袋材 |
-
1988
- 1988-09-06 US US07/240,994 patent/US4935271A/en not_active Expired - Fee Related
-
1989
- 1989-06-15 IL IL90629A patent/IL90629A/xx not_active IP Right Cessation
- 1989-06-19 CA CA000603231A patent/CA1290675C/en not_active Expired - Lifetime
- 1989-07-03 ZA ZA895056A patent/ZA895056B/xx unknown
- 1989-08-04 AU AU39327/89A patent/AU627758B2/en not_active Ceased
- 1989-09-01 JP JP1227264A patent/JP2952290B2/ja not_active Expired - Lifetime
- 1989-09-05 EP EP19890308986 patent/EP0358461A3/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
EP0358461A3 (en) | 1991-03-20 |
JP2952290B2 (ja) | 1999-09-20 |
US4935271A (en) | 1990-06-19 |
JPH02112937A (ja) | 1990-04-25 |
IL90629A (en) | 1991-12-15 |
EP0358461A2 (en) | 1990-03-14 |
IL90629A0 (en) | 1990-01-18 |
AU3932789A (en) | 1990-03-15 |
CA1290675C (en) | 1991-10-15 |
AU627758B2 (en) | 1992-09-03 |
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