CA2558744A1 - Thermoplastic composition comprising a co2 releasing material - Google Patents

Thermoplastic composition comprising a co2 releasing material Download PDF

Info

Publication number
CA2558744A1
CA2558744A1 CA002558744A CA2558744A CA2558744A1 CA 2558744 A1 CA2558744 A1 CA 2558744A1 CA 002558744 A CA002558744 A CA 002558744A CA 2558744 A CA2558744 A CA 2558744A CA 2558744 A1 CA2558744 A1 CA 2558744A1
Authority
CA
Canada
Prior art keywords
composition
releasing
maintains
package
environment
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.)
Granted
Application number
CA002558744A
Other languages
French (fr)
Other versions
CA2558744C (en
Inventor
Jonathan Freedman
William Spano
Deepti S. Gupta
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CSP Technologies Inc
Original Assignee
Individual
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 by Individual filed Critical Individual
Publication of CA2558744A1 publication Critical patent/CA2558744A1/en
Application granted granted Critical
Publication of CA2558744C publication Critical patent/CA2558744C/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/0004—Use of compounding ingredients, the chemical constitution of which is unknown, broadly defined, or irrelevant
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/0014—Use of organic additives
    • C08J9/0023—Use of organic additives containing oxygen
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2300/00—Characterised by the use of unspecified polymers
    • C08J2300/22—Thermoplastic resins

Abstract

A composition comprising a thermoplastic and a CO2 releasing material; wherein the CO2 releasing material comprises: a) a carbon and oxygen containing salt of an alkali or alkaline earth metal; and b) an acid; the CO2 releasing material has a sufficient amount and ratio of the carbon and oxygen containing salt of the alkali or alkaline earth metal and the acid so that, in the presence of water, the CO2 releasing material reacts to release CO2 gas through the thermoplastic into a surrounding environment.

Claims (18)

1. A composition comprising a thermoplastic and a CO2 releasing material;
wherein the CO2 releasing material comprises: a) a carbon and oxygen containing salt of an alkali or alkaline earth metal; and b) an acid; the CO2 releasing material has a sufficient amount and ratio of the carbon and oxygen containing salt of the alkali or alkaline earth metal and the acid so that, in the presence of water, the CO2 releasing material reacts to release CO2 gas through the thermoplastic into a surrounding environment.
2. The composition of claim 1 wherein the carbon and oxygen containing salt of an alkali or alkaline earth metal is a carbonate.
3. The composition of claim 2 wherein the composition is in the form of a film, sheet, insert or liner.
4. The composition of claim 2 wherein the CO2 releasing material reacts and releases CO2 gas through the thermoplastic into a package environment when the releasing material is exposed to an elevated relative humidity of the package environment of about at least 50%, as measured at 22C.
5. The composition of claim 2 wherein the CO2 releasing composition maintains a package environment for cut apples at about 30-45% CO2.
6. The composition of claim 5 wherein the O2 level is about 2-5%.
7. The composition of claim 2 wherein the CO2 releasing composition maintains a package environment for cut lettuce at below about 5% CO2.
8. The composition of claim 7 wherein the O2 level is about 2-5%.
9. The composition of claim 2 wherein the CO2 releasing composition maintains a package environment for baked goods at a sufficient release rate of CO2 to slow aerobic respiration of organisms that causes the baked good to become stale.
10. The composition of claim 9 wherein an absorbing material is incorporated into the composition to absorb detrimental levels of moisture.
11. The composition of claim 2 wherein the CO2 releasing composition maintains a package environment for cut flowers market at a sufficient release rate of CO2 to maintain the green color of flower stems for at least 30 days.
12. The composition of claim 2 wherein the CO2 releasing composition maintains a package environment for fresh or frozen seafood so as to produce sufficient CO2 to slow aerobic respiration while reducing anaerobic respiration.
13. The composition of claim 12 wherein the CO2 releasing composition maintains a package environment for fresh or frozen seafood above about 30%
with an ambient O2 concentration of about 20%.
14. The composition of claim 12 wherein the CO2 releasing composition maintains a package environment for fresh or frozen seafood at an elevated CO2 concentration of at least about 20% and the O2 concentration at about 20%.
15. The composition of claim 2 wherein a biologically active ingredient is incorporated into the composition.
16. The composition of claim 15 wherein the biologically active ingredient is chlorine dioxide and added in sufficient amounts with the CO2 releasing material so as to produce a modified atmosphere of about 30% CO2, about 20% O2 and about 50% N2 for seafood.
17. The composition of claim 2 wherein the CO2 releasing composition is integrated into a CO2 releasing film into a package with a barrier film having selective permeation to O2 and CO2.
18. The composition of claim 2 wherein the CO2 releasing composition produces a sufficient amount of CO2 in a film form so as to maintains a gas environment in the package of about 40% CO2, 40% nitrogen and 20% oxygen.
CA2558744A 2004-03-05 2005-03-04 Thermoplastic composition comprising a co2 releasing material Active CA2558744C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US10/794,306 US7314895B2 (en) 2001-12-19 2004-03-05 Thermoplastic composition comprising a CO2 releasing material
US10/794,306 2004-03-05
PCT/US2005/007198 WO2005086720A2 (en) 2004-03-05 2005-03-04 Thermoplastic composition comprising a co2 releasing material

Publications (2)

Publication Number Publication Date
CA2558744A1 true CA2558744A1 (en) 2005-09-22
CA2558744C CA2558744C (en) 2011-01-04

Family

ID=34976107

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2558744A Active CA2558744C (en) 2004-03-05 2005-03-04 Thermoplastic composition comprising a co2 releasing material

Country Status (6)

Country Link
US (1) US7314895B2 (en)
EP (1) EP1727874B1 (en)
JP (1) JP2007527462A (en)
CN (1) CN1997720B (en)
CA (1) CA2558744C (en)
WO (1) WO2005086720A2 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7838056B2 (en) * 2004-02-27 2010-11-23 Bp Corporation North America Inc. Using carbon dioxide regulators to extend the shelf life of a carbonated beverage
US8697164B2 (en) 2011-04-18 2014-04-15 Dole Fresh Vegetables, Inc. Commercial lettuce packaging in the field
DE202013012023U1 (en) * 2012-01-11 2015-04-29 Ceramtec Gmbh Actuator module with a multilayer actuator arranged in a housing and a constantly extremely low leakage current at the actuator surface
AU2013336244B2 (en) 2012-10-22 2019-05-16 Mordechai GRANOT Novel photobioreactor for enclosed horizontal cultivation of microalgae
US9326501B2 (en) * 2013-09-02 2016-05-03 Jp Patents L.L.C. Oxygen uptake compositions and preservation of oxygen perishable goods
KR102233264B1 (en) * 2019-04-08 2021-03-29 주식회사 펫클럽 Method of packing jerky for pet

Family Cites Families (97)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US148971A (en) 1874-03-24 Improvement in brick-machines
US5622871A (en) 1987-04-27 1997-04-22 Unilever Patent Holdings B.V. Capillary immunoassay and device therefor comprising mobilizable particulate labelled reagents
US1532831A (en) 1922-05-17 1925-04-07 Marion G Mastin Preserving and packing of foods
US1489971A (en) * 1922-05-20 1924-04-08 Bailey Hubert Polishing tool
US2202742A (en) 1936-06-24 1940-05-28 Jesse C Mccorkhill Moisture absorbent
GB595911A (en) * 1944-07-12 1947-12-23 Mathieson Alkali Works Improvements in the generation of chlorine dioxide
US2511666A (en) 1948-10-09 1950-06-13 Gen Electric Air dehumidifier for compartments
US2638179A (en) 1950-01-06 1953-05-12 Edward M Yard Drying capsule
US2991500A (en) 1954-06-14 1961-07-11 Hagen Norbert Method and apparatus for making plastic containers
US2941964A (en) 1954-11-16 1960-06-21 Koppers Co Inc Composition comprising polystyrene, volatile organic solvent and a carbon dioxide liberating agent, and process of simultaneously foaming and extruding said composition
US3013308A (en) 1957-10-08 1961-12-19 Plax Corp Method for molding and assembling dispenser fitment
US3245946A (en) 1959-04-29 1966-04-12 Union Carbide Corp Rubber and plastic formulations and process
US3101242A (en) 1961-02-01 1963-08-20 V L Smithers Mfg Company Process of making flexible absorbent material
US3156402A (en) 1961-07-03 1964-11-10 Continental Can Co Liquid absorbing and concealing device
US3256411A (en) 1964-02-17 1966-06-14 William F Mahrdt Time delay relay
US3326810A (en) 1964-11-16 1967-06-20 Grace W R & Co Desiccant package
US3322355A (en) 1965-03-01 1967-05-30 James G Bryant Disintegrating machine
US3344092A (en) 1965-04-22 1967-09-26 Koppers Co Inc Foamable styrene polymer compositions containing a mixture of a carbonate and a bicarbonate as blowing agents
US3537676A (en) 1967-12-20 1970-11-03 Valve Corp Of America Mold apparatus for closure with integral cap
US3567085A (en) 1968-12-02 1971-03-02 James G Flores Neck-supported pill container
US3687062A (en) 1970-03-13 1972-08-29 William J Frank Apparatus for crushing and disposing of cans and glass containers
US3704806A (en) 1971-01-06 1972-12-05 Le T Im Lensoveta Dehumidifying composition and a method for preparing the same
US3730372A (en) 1971-11-19 1973-05-01 Automatic Liquid Packaging Plastic container
US4407897A (en) 1979-12-10 1983-10-04 American Can Company Drying agent in multi-layer polymeric structure
US4770944A (en) 1979-12-10 1988-09-13 American Can Company Polymeric structure having improved barrier properties and method of making same
US4485204A (en) 1981-08-26 1984-11-27 Phillips Petroleum Company Polyester blends comprising a desiccant and a rubbery block copolymer
US4394144A (en) 1981-09-03 1983-07-19 Kaken Chemical Co., Ltd. Dehumidifying container
US4447565A (en) 1981-12-07 1984-05-08 The United States Of America As Represented By The United States Department Of Energy Method and composition for molding low density desiccant syntactic foam articles
JPS5926460A (en) 1982-08-06 1984-02-10 東洋製罐株式会社 Composite material for packing vessel cover
EP0133882B1 (en) 1983-07-30 1990-04-04 Akzo Patente GmbH Moulded articles with pores
JPS60152256A (en) 1984-01-18 1985-08-10 Atsugi Motor Parts Co Ltd Manufacture of motor
US4686093A (en) 1984-04-13 1987-08-11 Union Carbide Corporation Molecular sieve compositions with aluminum, phosphorus and at least two other elements
US4969998A (en) 1984-04-23 1990-11-13 W. L. Gore & Associates, Inc. Composite semipermeable membrane
US4665050A (en) 1984-08-13 1987-05-12 Pall Corporation Self-supporting structures containing immobilized inorganic sorbent particles and method for forming same
US4772300A (en) 1985-04-04 1988-09-20 Multiform Desiccants, Inc. Adsorbent cartridge
US5225107A (en) * 1985-07-11 1993-07-06 Boehringer Ingelheim Gmbh Nucleating agents (pore regulators) for the preparation of directly gassed thermoplastic foams
JPH08396B2 (en) 1985-10-07 1996-01-10 株式会社川上製作所 Vacuum compression transfer device for laminated sheet materials
JPS62135168A (en) 1985-12-03 1987-06-18 科研製薬株式会社 Dehumidifying packaging material
US4792484A (en) 1986-05-15 1988-12-20 Kuraray Co., Ltd. Composition, process for producing the same and multi-layer structure
JPS62294441A (en) 1986-06-11 1987-12-21 Toshiyuki Nakajima Preparation of molded body of treatment material
US4783056A (en) 1986-11-10 1988-11-08 Abrams Robert S Process for making an aseptic vial and cap
DE3715938A1 (en) 1987-05-13 1988-11-24 Boehringer Mannheim Gmbh CONTAINER FOR TEST STRIP
US4783206A (en) 1987-09-18 1988-11-08 Multiform Desiccants, Inc. Adsorbent cartridge
US6740731B2 (en) 1988-08-08 2004-05-25 Cargill Dow Polymers Llc Degradation control of environmentally degradable disposable materials
US5320778A (en) 1988-08-23 1994-06-14 Cortec Corporation Vapor phase corrosion inhibitor-desiccant material
US5332525A (en) 1988-08-23 1994-07-26 Cortec Corporation Vapor phase corrosion inhibitor-desiccant material
US5344589A (en) 1988-08-23 1994-09-06 Cortec Corporation Vapor phase corrosion inhibitor-desiccant material
US5130018A (en) 1988-09-22 1992-07-14 Dewatering Systems International, Inc. Desiccation system with coupled tether and protective cage
CA2096237C (en) 1989-04-04 2000-05-23 Linda L. Bunker A composite integral sheet of wrap material and method of making
EP0400460B1 (en) 1989-05-23 1995-04-05 Sasaki Chemicals Co., Ltd. Moisture-absorbent compositions
CA2027534C (en) 1989-10-23 1999-10-12 Yoshiaki Inoue Inhibitor parcel and method for preserving electronic devices or electronic parts
US4994312A (en) 1989-12-27 1991-02-19 Eastman Kodak Company Shaped articles from orientable polymers and polymer microbeads
US5118655A (en) 1990-04-02 1992-06-02 Western Water International, Inc. Water contaminant adsorption composition
DE4012799A1 (en) 1990-04-21 1991-10-24 Dorstener Maschf Ag Weaving loom warp let=off motion - has increased speed forward and reverse mechanism, for paper machine cloth
CA2040993C (en) 1990-04-25 2001-08-07 Yoshiaki Inoue Oxygen absorbent composition and method of preserving article with same
DE4013799A1 (en) 1990-04-28 1991-10-31 Gaplast Gmbh PLASTIC CONTAINER AND CONTAINER CLOSURE, ESPECIALLY FOR MEDICINAL PRODUCTS
US5154960A (en) 1990-06-21 1992-10-13 Eileen Mucci Drapeable soft odor absorbing sheet material
CN1057757A (en) * 1990-07-02 1992-01-15 辽宁省粮食科学研究所 Deoxidation, antistaling agent
US5304419A (en) 1990-07-06 1994-04-19 Alpha Fry Ltd Moisture and particle getter for enclosures
JPH0474515A (en) 1990-07-13 1992-03-09 Toray Ind Inc Oxygen absorbing body
WO1992008434A1 (en) 1990-11-07 1992-05-29 Otsuka Pharmaceutical Factory, Inc. Multi-chamber vessel
US5114003A (en) 1991-03-28 1992-05-19 E. I. Du Pont De Nemours And Company Tablet vial with desiccant in bottom
JPH06506707A (en) 1991-04-25 1994-07-28 イー・アイ・デユポン・ドウ・ヌムール・アンド・カンパニー Moisture indicating molded resin
US5234963A (en) * 1992-05-13 1993-08-10 Gaia Research Production of encapsulated chemical foaming concentrates
US5218182A (en) 1992-06-11 1993-06-08 Hobart Brothers Company Constant current welding power supply with auxilary power source to maintain minimum output current levels
DE69323297T2 (en) 1992-08-28 1999-08-26 Nippon Catalytic Chem Ind WATER ABSORBING MATERIAL, OBJECT MADE THEREOF AND METHOD FOR THE PRODUCTION THEREOF
FR2698289B1 (en) 1992-11-20 1995-01-27 Airsec Ind Sa Desiccants based on polymers.
US5401706A (en) 1993-01-06 1995-03-28 Semco Incorporated Desiccant-coated substrate and method of manufacture
GB9318937D0 (en) 1993-09-14 1993-10-27 Metal Box Plc Insert-moulded component
JPH07125764A (en) 1993-10-28 1995-05-16 Japan Tobacco Inc Preservative moisture-proofing sheet
US6323269B1 (en) 1993-12-22 2001-11-27 Imerys Pigments, Inc. Mineral containing thermoplastic granules
US5494155A (en) 1994-06-29 1996-02-27 Pilkington Barnes Hind, Inc. Incorporation of absorbents during extraction and/or hydration of hydrogel materials used as ophthalmic devices
TW492946B (en) * 1994-11-02 2002-07-01 Rengo Co Ltd Carbon dioxide gas generating compositions
US6344509B1 (en) 1994-12-22 2002-02-05 Taiyo Kagaku Co., Ltd. Thermoplastic resin compositions
US5580369A (en) 1995-01-30 1996-12-03 Laroche Industries, Inc. Adsorption air conditioning system
GB9505425D0 (en) 1995-03-17 1995-05-03 Unilever Plc Assay devices
US6080350A (en) 1995-04-19 2000-06-27 Capitol Specialty Plastics, Inc. Dessicant entrained polymer
US5911937A (en) 1995-04-19 1999-06-15 Capitol Specialty Plastics, Inc. Desiccant entrained polymer
EE9700238A (en) 1995-04-19 1998-04-15 Capitol Vial, Inc. Desiccant added to a closed container
US6214255B1 (en) 1995-04-19 2001-04-10 Capitol Specialty Plastics, Inc. Desiccant entrained polymer
US6221446B1 (en) 1995-04-19 2001-04-24 Capitol Specialty Plastics, Inc Modified polymers having controlled transmission rates
US6130263A (en) 1995-04-19 2000-10-10 Capitol Specialty Plastics, Inc. Desiccant entrained polymer
WO1996036667A1 (en) 1995-05-17 1996-11-21 Tetra Laval Holdings & Finance S.A. Resin composition and laminate for storage of liquid food
JPH09202361A (en) * 1996-01-24 1997-08-05 Takeshi Nao Resin composition for preserving freshness and film sheet or container for preserving freshness molded by using the composition
US5962333A (en) 1996-01-25 1999-10-05 Multisorb Technologies, Inc. Medical diagnostic test strip with desiccant
US5773105A (en) 1996-03-07 1998-06-30 United Catalysts Inc. - Desiccants Absorbent packet
US5844027A (en) 1996-05-03 1998-12-01 Ciba Specialty Chemicals Corporation Stabilizer composition for thermoplastic materials
DE19637368A1 (en) 1996-09-13 1998-03-19 Basf Ag Flame retardant thermoplastic molding compounds
US5814136A (en) 1997-04-15 1998-09-29 Stanhope Products Company Desiccant container
US5935668A (en) * 1997-08-04 1999-08-10 Triangle Pacific Corporation Wooden flooring strip with enhanced flexibility and straightness
US6017849A (en) 1998-08-20 2000-01-25 Biotechnologies For Horticulture, Inc. Synthesis methods, complexes and delivery methods for the safe and convenient storage, transport and application of compounds for inhibiting the ethylene response in plants
CA2317328C (en) * 1999-09-10 2008-01-08 Dainichiseika Color & Chemicals Mfg. Co., Ltd. Freshness-retaining agent and method for agricultural/horticultural products
JP2003511501A (en) * 1999-10-05 2003-03-25 ザ、プロクター、エンド、ギャンブル、カンパニー Foam unstable to water
JP4690624B2 (en) 1999-11-23 2011-06-01 ノース・キャロライナ・ステイト・ユニヴァーシティ Methods for blocking plant ethylene response using cyclopropene derivatives
WO2002050178A1 (en) * 2000-12-19 2002-06-27 Csp Technologies, Inc. Interconnecting channel morphology composition for releasing co2
US6642047B2 (en) * 2001-06-29 2003-11-04 Becton, Dickinson And Company Exothermic chemistry and method for generating an anaerobic environment
MXPA04010340A (en) * 2002-04-19 2005-02-17 Tilia Int Inc Food preservation container and filter.

Also Published As

Publication number Publication date
WO2005086720A2 (en) 2005-09-22
EP1727874A2 (en) 2006-12-06
US20040242746A1 (en) 2004-12-02
CN1997720A (en) 2007-07-11
US7314895B2 (en) 2008-01-01
CA2558744C (en) 2011-01-04
JP2007527462A (en) 2007-09-27
EP1727874B1 (en) 2016-06-29
WO2005086720A3 (en) 2006-06-01
CN1997720B (en) 2011-04-13
EP1727874A4 (en) 2007-12-26

Similar Documents

Publication Publication Date Title
CA2558744A1 (en) Thermoplastic composition comprising a co2 releasing material
US4337276A (en) Method for storing produce and container and freshness keeping agent therefore
EP1514841A2 (en) Carbon dioxide absorbing materials and transport system and transport method of live fishery products
CA2127227A1 (en) Stabilization of cultured skim bactericidal activity
EP0490931A1 (en) Activated earth polyethylene film
CN103081987A (en) Preservation method of kiwi fruits employing high-concentration CO2 modified atmosphere packaging
ES2304204B1 (en) MINIMALLY PROCESSED FRESH VEGETABLE PRODUCTS SYSTEM.
JPS6094056A (en) Bag for preserving broccoli sprouts
AU611880B2 (en) Process for preservation of perishable packaged raw vegetable food products
JPS6224067B2 (en)
EP1298072B2 (en) Tray made of open-cell expanded plastics for vegetables
CN201512181U (en) Ventilating window for packing materials
US20200315220A1 (en) Method and apparatus for extending shelf-life of meat & poultry
US20080081364A1 (en) Preservation system for stratabound microorganisms
WO1993002130A1 (en) Flexible films for modified atmosphere packaging
US11332272B2 (en) Gas remover and its use in vacuum packaging of agricultural products
CN107487535A (en) Function integrates fresh-keeping packaging bag and the application in intensive shadow on lung is fresh-keeping
Jayathunge et al. Extension of postharvest life of oyster mushroom under ambient conditions by modified atmosphere packaging
JPS5881732A (en) Preservation of raw fish
CN114467728A (en) Water culture preservation method for leaf vegetables
JP3117557B2 (en) Packaging with spinach
KR820000531B1 (en) Agri-chemical used in maintaining freshment of vegetable and friut
JP2010207146A (en) Nitric acid reducing agent for postharvest agricultural product and method for reducing nitric acid of postharvest agricultural product
AU647410B2 (en) Activated earth polyethylene film
AU647410C (en) Activated earth polyethylene film

Legal Events

Date Code Title Description
EEER Examination request