Laminate with gas barrier properties, production method therefor, and paper container employing said laminate
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B32B-023/08
B32B-027/10
B32B-027/38
출원번호
US-0622715
(2003-07-21)
우선권정보
JP-0210081 (1998-07-24); JP-0210080 (1998-07-24)
발명자
/ 주소
Kasahara, Hiroshi
출원인 / 주소
Japan Polyolefins Co., Ltd.
대리인 / 주소
Sughrue Mion, PLLC
인용정보
피인용 횟수 :
3인용 특허 :
1
초록▼
A paper container is produced that has gas barrier properties, by employing a laminate having at least a (I) paper layer 101, a (II) gas barrier layer 103, and an (III) epoxy-group-containing resin composition layer 104. The (III) epoxy-group-containing resin composition layer consists of a resin co
A paper container is produced that has gas barrier properties, by employing a laminate having at least a (I) paper layer 101, a (II) gas barrier layer 103, and an (III) epoxy-group-containing resin composition layer 104. The (III) epoxy-group-containing resin composition layer consists of a resin composition that contains a polyolefin (a) having a melt flow rate of 0.1?100 g/min and an epoxy-compound (b) which has two or more epoxy groups in the molecule and has a molecular weight of 3000 or less, epoxy-compound (b) being added in an amount of 0.01?5 parts by weight with respect to 100 parts by weight of polyolefin (a). This (III) epoxy-group-containing resin composition layer has good adhesion with the (II) gas barrier layer, thus a laminate can be produced without employing a dry laminate adhesive agent or an extrusion laminate anchor agent. Accordingly, it is possible to avoid a deterioration in the work environment or an odor remaining in the final product from the use of organic solvents. As a result, a paper container having a good adhesive strength between the layers and superior gas barrier properties can be obtained.
대표청구항▼
1. A laminate with gas barrier properties, characterized in having at least comprising a (I) paper layer, a (II) gas barrier layer, and an (III) epoxy-group-containing resin composition layer, which includes a polyolefin (a) having a melt flow rate of 0.1?100 g/10 min and an epoxy-compound (b) havin
1. A laminate with gas barrier properties, characterized in having at least comprising a (I) paper layer, a (II) gas barrier layer, and an (III) epoxy-group-containing resin composition layer, which includes a polyolefin (a) having a melt flow rate of 0.1?100 g/10 min and an epoxy-compound (b) having two or more epoxy groups in the molecule and a molecular weight of 3000 or less, epoxy-compound (b) being present in an amount of 0.01?5 parts by weight with respect to 100 parts by weight of polyolefin (a);wherein a surface of the (III) epoxy-group-containing resin composition layer is surface treated, wherein the surface of the (III) epoxy-group-containing resin composition layer has a degree of oxidation in the range of 0.05?100 and is disposed on a surface of the (II) gas barrier layer which does not contain an anchor coat agent. 2. A laminate with gas barrier properties according to claim 1, characterized in that said (II) gas barrier layer consists of one of either an inorganic vapor deposited synthetic resin layer or a metal foil.3. A laminate with gas barrier properties according to claim 1, wherein said polyolefin (a) is a non-polar polyolefin.4. A laminate with gas barrier properties according to claim 1, characterized in that said epoxy-compound (b) is an epoxidized plant oil.5. A laminate according to claim 1, characterized in that a (V) impact-resistant resin layer is also provided to said laminate.6. A laminate according to claim 1, characterized in that a (VI) heat sealing layer is also provided to said laminate.7. A laminate with gas barrier properties according to claim 1, wherein said (III) epoxy-group-containing resin composition layer is formed by at least one of extrusion laminating and extrusion sand laminating.8. A laminate with gas barrier properties according to claim 1, wherein the surface of said (II) gas barrier layer, on which said (III) epoxy-group-containing resin composition layer is formed, is subjected to in-line surface treatment.9. A laminate with gas barrier properties according to claim 1, wherein the surface of said (III) epoxy-group-containing resin composition layer, on which said (II) gas barrier layer is formed, is subjected to an ozone treatment.10. A laminate with gas barrier properties according to claim 1, characterized in that said (III) epoxy-group-containing resin composition layer contains said polyolefin (a), said epoxy-compound (b), and an olefin polymer (c) having functional groups that react with epoxy groups, wherein the amount of olefin polymer (c) is 30 wt % or less with respect to the total weight of polyolefin (a) and olefin polymer (c), and epoxy-compound (b) is added in an amount of 0.01?5 parts by weight with respect to a total 100 parts by weight of polyolefin (a) and an olefin polymer (c).11. A laminate with gas barrier properties according to claim 10, characterized in that said olefin polymer (c) is a modified olefin polymer or olefin-copolymer having at least one group selected from the group consisting of acid anhydride group, carboxyl group, and carboxylic acid metal salts in the molecules.12. A laminate with gas barrier properties according to claim 11, characterized in that said olefin polymer (c) is an ethylene-maleic anhydride copolymer or an ethylene-maleic anhydride-(meth)acrylate copolymer.13. A laminate with gas barrier properties according to claim 1, characterized in that a (IV) synthetic resin layer is also provided to said laminate.14. A laminate with gas barrier properties according to claim 13, characterized in that said (IV) synthetic resin layer consists of a linear low-density polyethylene or an ethylene (co)polymer produced by a high-pressure radical polymerization method.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (1)
Ikenoya Tadakatsu,JPX ; Ono Kazuya,JPX, Packaging container.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.