Packaging laminate, method for manufacturing of the packaging laminate and packaging container produced there from
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B32B-027/08
B32B-027/10
B32B-027/34
B65D-081/24
C08J-007/04
출원번호
US-0593704
(2007-04-04)
등록번호
US-9593216
(2017-03-14)
국제출원번호
PCT/EP2007/003022
(2007-04-04)
§371/§102 date
20091113
(20091113)
국제공개번호
WO2008/122293
(2008-10-16)
발명자
/ 주소
Fayet, Pierre
Rochat, Gil
Bonnebault, Alain
Leterrier, Yves
Singh, Bandeep
Månson, Jan-Anders
출원인 / 주소
TETRA LAVAL HOLDINGS & FINANCE S.A.
대리인 / 주소
Buchanan, Ingersoll & Rooney PC
인용정보
피인용 횟수 :
0인용 특허 :
29
초록▼
A barrier film for packaging food or beverage comprises a polymer base film, and a barrier layer comprising an inorganic oxide applied onto the base film by vapor deposition. The inorganic oxide layer is further coated with a healing layer of a crosslinked organopolysiloxane which is covalently boun
A barrier film for packaging food or beverage comprises a polymer base film, and a barrier layer comprising an inorganic oxide applied onto the base film by vapor deposition. The inorganic oxide layer is further coated with a healing layer of a crosslinked organopolysiloxane which is covalently bound to the inorganic layer. Other aspects disclosed here involve a multilayer packaging laminate comprised of the barrier film, and a method of manufacturing the barrier film and packaging containers manufactured from the film.
대표청구항▼
1. Barrier film for packaging of food or beverage comprising a base film of a polymer and applied onto the base film, an inorganic barrier layer comprising an inorganic oxide selected from the group consisting of silicon oxide and aluminium oxide deposited by a vapour deposition method, wherein the
1. Barrier film for packaging of food or beverage comprising a base film of a polymer and applied onto the base film, an inorganic barrier layer comprising an inorganic oxide selected from the group consisting of silicon oxide and aluminium oxide deposited by a vapour deposition method, wherein the deposited inorganic barrier layer is further coated with a healing layer of a crosslinked organopolysiloxane that is formed by a liquid film coating method in which a healing layer coating composition comprising a photoinitiator which is 2-benzyl-2-dimethylamino-1-(4-morpholinophenyl)-butanone-1 is applied to the barrier layer and cured by UV irradiation, wherein the organopolysiloxane is covalently bound to the inorganic barrier layer, wherein the coated healing layer is a reaction product from a liquid composition containing at least 95 weight percent of unsaturated organosilanes having three silanol-forming groups and consisting essentially of a reactive unsaturated silane selected from the group consisting of vinyltrimethoxysilane, vinyltriethoxysilane and mixtures thereof, and the organopolysiloxane is crosslinked at the sites of unsaturation. 2. Barrier film according to claim 1, wherein the inorganic barrier layer comprises, at least at a surface of the inorganic barrier layer, aluminium oxide. 3. Barrier film according to claim 1, wherein the inorganic barrier layer comprises silicon oxide further containing covalently bound carbon in its formula (SiOxCy), wherein x is from 0.1 to 2.5 and y is from to 0.1 to 2.5. 4. Barrier film according to claim 1, wherein said deposited inorganic barrier layer has a thickness of from 5 to 500 nm. 5. Barrier film according to claim 1, wherein the base film comprises a polymer layer for receiving the deposited inorganic barrier layer, said polymer layer is made of a material selected from the group consisting of polyethylene terephthalate (PET) and polyamide (PA). 6. Barrier film according to claim 1, wherein said deposited inorganic barrier layer has been applied by plasma enhanced chemical vapour deposition (PECVD). 7. Barrier film according to claim 1, wherein said deposited inorganic barrier layer has been applied by atmospheric plasma coating or combustion chemical vapour deposition (CCVD). 8. Barrier film according to claim 1, wherein said coated healing layer has a thickness of from 1 to 50 nm. 9. Barrier film according to claim 1, wherein said deposited inorganic barrier layer has a thickness of from 5 to 200 nm. 10. Barrier film according to claim 1, wherein said coated healing layer has a thickness of from 10 to 30 nm. 11. Barrier film according to claim 1, wherein a content of silanes other than unsaturated silanes having three silanol-forming groups is less than 3 weight percent of the total silane coating composition. 12. Multilayer packaging laminate for packaging of food or beverage comprising the barrier film according to claim 1, and a heat-sealable polyolefin-based layer. 13. Packaging laminate for rigid or semi-rigid food or beverage containers comprising a core layer of paperboard or carton, outermost heat sealable, liquid tight layers of a polyolefin-based polymer, and the barrier film according to claim 1. 14. Packaging container for packaging of food or beverage manufactured from the barrier film or packaging laminate as specified in claim 1. 15. Method of manufacturing a barrier film for packaging food or beverage as specified in claim 1, comprising providing a base film of a polymer;applying onto the base film, an inorganic barrier layer comprising an inorganic oxide by a vapour deposition method;further coating said deposited inorganic barrier layer wherein the further coating step comprises:providing a composition of a reactive unsaturated silane compound having three silanol-forming groups dissolved in a solvent;coating the composition onto the deposited inorganic barrier layer;subjecting the coated composition to hydrolysis and condensation reaction to provide an ethylenically unsaturated organosiloxane oligomer, which is covalently bound to the inorganic barrier layer;curing the coated organosiloxane oligomer to provide the crosslinked healing layer. 16. Method of manufacturing a barrier film for packaging food or beverage according to claim 15, wherein the reactive unsaturated silane compound is dissolved in a solvent at a concentration of from 1 to 10 weight percent. 17. Method of manufacturing a barrier film for packaging food or beverage according to claim 15, wherein the coating composition with the unsaturated silane compound is coated at a thickness of from 1 to 50 nm as measured before curing. 18. Method of manufacturing a barrier film for packaging food or beverage according to claim 15, wherein the reactive unsaturated silane compound is dissolved in a solvent at a concentration of from 3 to 6 weight percent and coated at a thickness of from 10 nm to 30 nm, as measured before curing. 19. Method of manufacturing a barrier film for packaging food or beverage according to claim 1, wherein the photoinitiator is added at an amount of from 1 to 10 weight percent.
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