Plastic film having oxygen absorbing function and infusion bag
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A61B-019/00
A61J-001/10
출원번호
US-0504323
(2010-11-02)
등록번호
US-8708992
(2014-04-29)
우선권정보
JP-2009-251627 (2009-11-02)
국제출원번호
PCT/JP2010/069477
(2010-11-02)
§371/§102 date
20120426
(20120426)
국제공개번호
WO2011/052776
(2011-05-05)
발명자
/ 주소
Kobayashi, Yukio
Kageyama, Yohei
Nakamura, Manabu
Kotani, Masataka
Iwasaki, Toshiharu
출원인 / 주소
Hosokawa Yoko Co., Ltd.
대리인 / 주소
Sughrue Mion, PLLC
인용정보
피인용 횟수 :
5인용 특허 :
5
초록▼
The present invention relates to a plastic film for medical containers having an oxygen absorbing function including at least 4 layers (4) and formed by a co-extrusion method, and an infusion bag formed thereof, in which the 4 layers include: a first layer (1) constituted by a polyamide obtained by
The present invention relates to a plastic film for medical containers having an oxygen absorbing function including at least 4 layers (4) and formed by a co-extrusion method, and an infusion bag formed thereof, in which the 4 layers include: a first layer (1) constituted by a polyamide obtained by a ring-opening polymerization of a lactam 11 or more carbon atoms or by polycondensing of an ω-amino acid having 11 or more carbon atoms, or a polyamide obtained by copolycondensing a dicarboxylic acid having 10 or more carbon atoms and a diamine having 6 or more carbon atoms; a second layer (2) of a mixed composition that is adjacent to the first layer and contains an ethylene vinyl alcohol copolymer of an α-olefin and a monomer of an unsaturated carboxylic acid or an anhydride of an unsaturated dicarboxylic acid as the major component, and a transition metal salt and a polyene-based polymer having an unsaturated double bond as accessory components; a third layer (3) that is adjacent to the second layer and contains a copolymer of an α-olefin and an anhydride monomer of an unsaturated carboxylic acid or an unsaturated dicarboxylic acid as the major component; and a sealing layer containing a polyethylene as the major component.
대표청구항▼
1. A plastic film used for a medical container which is composed at least of four layers, formed by a water-cooling inflation method of co-extrusion, and has an oxygen absorbing function, comprising in order from an outermost layer: a first layer that contains a polyamide obtained from a ring-openin
1. A plastic film used for a medical container which is composed at least of four layers, formed by a water-cooling inflation method of co-extrusion, and has an oxygen absorbing function, comprising in order from an outermost layer: a first layer that contains a polyamide obtained from a ring-opening polymerization of a lactam having 11 or more carbon atoms or from polycondensation of an ω-amino acid having 11 or more carbon atoms, or a polyamide obtained from copolycondensation of a dicarboxylic acid having 10 or more carbon atoms and a diamine having 6 or more carbon atoms, wherein the first layer is the outermost layer;a second layer that is adjacent to the first layer and contains as the main component an ethylene vinyl alcohol copolymer and as accessory components a transition metal salt and a polyene-based polymer having an unsaturated double bond;a third layer that is adjacent to the second layer and contains a copolymer of an α-olefin and a monomer of an unsaturated carboxylic acid or an anhydride of an unsaturated dicarboxylic acid as the major component; anda sealing layer that contains a polyethylene as the main component. 2. The plastic film used for a medical container according to claim 1, a layer of a mixed composition containing the ethylene vinyl alcohol copolymer as the main component and the transition metal salt and the polyene-based polymer having an unsaturated double bond as the accessory component absorbs 30 cc or more oxygen per gram, and the thickness of the layer of the mixed composition is 5 to 35% of the total thickness of the plastic film. 3. The plastic film used for a medical container according to claim 1, wherein the melting peak temperature of the first layer is 175° C. or higher, and the difference between the melting peak temperature of the first layer and the melting peak temperatures of the sealing layers is 40° C. or larger. 4. The plastic film used for a medical container according to claim 2, wherein the melting peak temperature of the first layer is 175° C. or higher, and the difference between the melting peak temperature of the first layer and the melting peak temperatures of the sealing layers is 40° C. or larger. 5. The plastic film according to claim 1, wherein the sealing layer is a mixture of 60 to 95 mass % of a linear low-density polyethylene and 5 to 40 mass % of a high-density polyethylene. 6. The plastic film according to claim 1, wherein the sealing layer includes two layers which are a layer that is adjacent to the third layer and has, as the main component, a co-polymer of an α-olefin and a monomer of an unsaturated carboxylic acid or an anhydride of an unsaturated dicarboxylic acid and a layer that is adjacent to the layer and composed of a high-density polyethylene. 7. The plastic film according to claim 2, wherein the sealing layer includes two layers which are a layer that is adjacent to the fourth layer and has, as the main component, a co-polymer of an α-olefin and a monomer of an unsaturated carboxylic acid or an anhydride of an unsaturated dicarboxylic acid and a layer that is adjacent to the layer and composed of a high-density polyethylene. 8. A plastic film used for a medical container which is composed at least of five layers, formed by a water-cooling inflation method of co-extrusion, and has an oxygen absorbing function, comprising in order from an outermost layer: a first layer that contains a polyamide obtained from a ring-opening polymerization of a lactam having 11 or more carbon atoms or from polycondensation of an ω-amino acid having 11 or more carbon atoms, or a polyamide obtained from copolycondensation of a dicarboxylic acid having 10 or more carbon atoms and a diamine having 6 or more carbon atoms, wherein the first layer is the outermost layer;a second layer that is adjacent to the first layer and contains a copolymer of an α-olefin and a monomer of an unsaturated carboxylic acid or an anhydride of an unsaturated dicarboxylic acid as the major component;a third layer that is adjacent to the second layer and contains as the main component an ethylene vinyl alcohol copolymer and as accessory components a transition metal salt and a polyene-based polymer having an unsaturated double bond;a fourth layer that is adjacent to the third layer and contains a copolymer of an α-olefin and a monomer of an unsaturated carboxylic acid or an anhydride of an unsaturated dicarboxylic acid as the major component; anda sealing layer that that contains a polyethylene as the main component. 9. The plastic film used for a medical container according to claim 8, a layer of a mixed composition containing the ethylene vinyl alcohol copolymer as the main component and the transition metal salt and the polyene-based polymer having an unsaturated double bond as the accessory component absorbs 30 cc or more oxygen per gram, and the thickness of the layer of the mixed composition is 5 to 35% of the total thickness of the plastic film. 10. The plastic film used for a medical container according to claim 8, wherein the melting peak temperature of the first layer is 175° C. or higher, and the difference between the melting peak temperature of the first layer and the melting peak temperatures of the sealing layers is 40° C. or larger. 11. The plastic film used for a medical container according to claim 8, wherein the melting peak temperature of the first layer is 175° C. or higher, and the difference between the melting peak temperature of the first layer and the melting peak temperatures of the sealing layers is 40° C. or larger. 12. The plastic film according to claim 8, wherein the sealing layer is a mixture of 60 to 95 mass % of a linear low-density polyethylene and 5 to 40 mass % of a high-density polyethylene. 13. The plastic film according to claim 8, wherein the sealing layer includes two layers which are a layer that is adjacent to the fourth layer and has, as the main component, a co-polymer of an α-olefin and a monomer of an unsaturated carboxylic acid or an anhydride of an unsaturated dicarboxylic acid and a layer that is adjacent to the layer and composed of a high-density polyethylene. 14. The plastic film according to claim 9, wherein the sealing layer includes two layers which are a layer that is adjacent to the fourth layer and has, as the main component, a co-polymer of an α-olefin and a monomer of an unsaturated carboxylic acid or an anhydride of an unsaturated dicarboxylic acid and a layer that is adjacent to the layer and composed of a high-density polyethylene. 15. An infusion bag in which a pouring opening is provided on the main body of the infusion bag formed of the plastic film according to any one of claims 1 to 14.
Sidney T. Smith ; Larry A. Rosenbaum ; Steven Giovanetto ; Bradley Buchanan ; Y. Samuel Ding ; Suchuan C. Fan ; Gregg Nebgen, Multilayered polymer structure for medical products.
Smith Sidney T. ; Rosenbaum Larry ; Giovanetto Steven ; Buchanan Bradley ; Ding Y. Samuel ; Fan Suchuan C. ; Nebgen Gregg, Multilayered polymer structure for medical products.
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