IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0858190
(2001-05-15)
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등록번호 |
US-8110232
(2012-02-07)
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발명자
/ 주소 |
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출원인 / 주소 |
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인용정보 |
피인용 횟수 :
1 인용 특허 :
136 |
초록
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Packaging of bananas in containers having designed permeabilities to oxygen, carbon dioxide, and ethylene. The containers preferably include a gas-permeable membrane comprising (1) a microporous film, and (2) a polymeric coating on the microporous film. The containers enable storage and/or ripening
Packaging of bananas in containers having designed permeabilities to oxygen, carbon dioxide, and ethylene. The containers preferably include a gas-permeable membrane comprising (1) a microporous film, and (2) a polymeric coating on the microporous film. The containers enable storage and/or ripening of bananas under controlled conditions. Using the new containers, bananas can be ripened while they are being transported, or in conventional ripening rooms without opening the bags in which they have been transported. In addition, bananas can be preserved in a satisfactory ripened state for longer periods of time.
대표청구항
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1. A package which is at a temperature of 13-18° C. and which comprises (a) a sealed container, and(b) within the sealed container, at least 4 kg of bananas which have not yet commenced their climacteric, and a packaging atmosphere around the bananas;the sealed container having an O2 permeability at
1. A package which is at a temperature of 13-18° C. and which comprises (a) a sealed container, and(b) within the sealed container, at least 4 kg of bananas which have not yet commenced their climacteric, and a packaging atmosphere around the bananas;the sealed container having an O2 permeability at 13° C., per kg of bananas in the container (OP13/kg), of at least 1500 ml/atm.24 hrs, an R ratio at 13° C. of at least 3, and an ethylene permeability at 13° C., per kg of bananas in the container (EtOP13/kg) which is at least 3 times the OP13/kg of the container; and the packaging atmosphere being an equilibrium atmosphere in which the oxygen content has a substantially constant value which is from 14 to 19%, the carbon dioxide content has a substantially constant value which is less than 10%, and the total quantity of oxygen and carbon dioxide has a substantially constant value which is less than 20%. 2. A package according to claim 1 wherein the container includes at least one permeable control member which provides a pathway for O2, CO2 and ethylene to enter or leave the packaging atmosphere and which comprises a gas permeable membrane comprising (a) a microporous polymeric film, and(b) a polymeric coating on the microporous film. 3. A package according to claim 2 wherein the gas-permeable membrane (i) has a P10 ratio, over at least one 10° C. range between −5 and 25° C. of at least 1.5, and(ii) has an oxygen permeability (OTR), at all temperatures between 13 and 25° C., of at least 2,480,000 ml/m2.atm.24 hrs (160,000 cc/100 inch2.atm.24 hrs). 4. A package according to claim 3 wherein the microporous polymeric film comprises a network of interconnected pores having an average pore size of less than 0.24 micron, with at least 70% of the pores having a pore size of less than 0.24 micron. 5. A package according to claim 4 wherein (1) the pores in the microporous film constitute 35 to 80% by volume of the microporous film; and(2) the microporous film comprises (a) a polymeric matrix comprising (i) an essentially linear ultrahigh molecular weight polyethylene having an intrinsic viscosity of at least 18 deciliters/g, or (ii) an essentially linear ultrahigh molecular weight polypropylene having an intrinsic viscosity of at least 6 deciliters/g, or (iii) a mixture of (i) and (ii); and(a) 30 to 90% by weight, based on the weight of the film, of a finely divided particulate substantially insoluble filler which is distributed throughout the film. 6. A package according to claim 1 wherein the packaging atmosphere is free of ethylene which has been added to the packaging atmosphere from a source of ethylene other than the bananas themselves. 7. A package according to claim 1 wherein the sealed container contains only the bananas. 8. A package which is at a temperature of 13-18° C. and which comprises (a) a sealed container which comprises (i) a polyethylene bag, and(ii) at least one permeable control member which provides a pathway for O2, CO2 and ethylene to enter or leave the packaging atmosphere and which comprises a gas-permeable membrane comprising a microporous polymeric film, and a polymeric coating on the microporous film; and(b) within the sealed container, at least 4 kg of bananas which have not yet commenced their climacteric, and a packaging atmosphere around the bananas; andthe sealed container having an O2 permeability at 13° C., per kg of bananas in the container (OP13/kg), of at least 1500 ml/atm.24 hrs, an R ratio at 13° C. of at least 3, and an ethylene permeability at 13° C., per kg of bananas in the container (EtOP13/kg) which is at least 3 times the OP13/kg of the container; and the packaging atmosphere(i) being an equilibrium atmosphere in which the oxygen content has a substantially constant value which is from 14 to 19%, the carbon dioxide content has a substantially constant value which is less than 10%, and the total quantity of oxygen and carbon dioxide has a substantially constant value which is less than 20%, and(ii) being free of ethylene which has been added to the packaging atmosphere from a source of ethylene other than the bananas themselves. 9. A package according to claim 8 wherein the gas-permeable membrane (i) has a P10 ratio, over at least one 10° C. range between −5 and 25° C. of at least 1.5, and(ii) has an oxygen permeability (OTR), at all temperatures between 13 and 25° C., of at least 2,480,000 ml/m2.atm.24 hrs (160,000 cc/100 inch2.atm.24 hrs). 10. A package according to claim 9 wherein the microporous polymeric film comprises a network of interconnected pores having an average pore size of less than 0.24 micron, with at least 70% of the pores having a pore size of less than 0.24 micron. 11. A package according to claim 10 wherein (1) the pores in the microporous film constitute 35 to 80% by volume of the microporous film; and(2) the microporous film comprises (a) a polymeric matrix comprising (i) an essentially linear ultrahigh molecular weight polyethylene having an intrinsic viscosity of at least 18 deciliters/g, or (ii) an essentially linear ultrahigh molecular weight polypropylene having an intrinsic viscosity of at least 6 deciliters/g, or (iii) a mixture of (i) and (ii); and(b) 30 to 90% by weight, based on the weight of the film, of a finely divided particulate substantially insoluble filler which is distributed throughout the film. 12. A package according to claim 8 wherein the sealed container contains only the bananas.
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