Multilayer polymer film for a multichamber medical bag and process for fabrication thereof
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A61J-001/10
B32B-007/06
출원번호
US-0564134
(1996-05-28)
우선권정보
DE-4410876 (1994-03-29)
국제출원번호
PCT/EP95/01152
(1995-03-28)
§371/§102 date
19960528
(19960528)
국제공개번호
WO-9526177
(1995-10-05)
발명자
/ 주소
Kreischer Thomas,DEX
Heilmann Klaus,DEX
Nicola Thomas,DEX
Zimmermann Michael,DEX
출원인 / 주소
Fresenius AG, DEX
대리인 / 주소
Fulbright & Jaworski L.L.P.
인용정보
피인용 횟수 :
65인용 특허 :
3
초록▼
The invention concerns a multilayer polymer film and a multichamber bag, whose bag chambers are formed by seams in the outer border zone and by at least one seam in the chamber separation zone, whereby the seams are formed from the polymer materials facing the chambers. The polymer materials facing
The invention concerns a multilayer polymer film and a multichamber bag, whose bag chambers are formed by seams in the outer border zone and by at least one seam in the chamber separation zone, whereby the seams are formed from the polymer materials facing the chambers. The polymer materials facing the chambers are inseparably sealed together in the outer border zone and sealed together in the chamber separation zone such that the seam is separable with a force which lies in the range from 5 to 20 N. The different strength of the bond from the sealing process is obtained by varying sealing temperatures.
대표청구항▼
[ We claim:] [1.] A method of sealing a multilayer polymer film including two or more layers, which, at a first sealing temperature, forms a peelable bond and, at a second higher sealing temperature, forms a permanent bond, wherein the sealing layer has a matrix phase polymer system, wherein the mat
[ We claim:] [1.] A method of sealing a multilayer polymer film including two or more layers, which, at a first sealing temperature, forms a peelable bond and, at a second higher sealing temperature, forms a permanent bond, wherein the sealing layer has a matrix phase polymer system, wherein the matrix polymer is a polyethylene homopolymer, a polyethylene copolymer, a polypropylene homopolymer, or a polypropylene copolymer and the phase polymer is a styrene ethylene/butylene styrene triblock polymer with a styrene ethylene/butylene diblock component, a styrene ethylene/propylene styrene triblock polymer, a styrene butadiene styrene triblock polymer, and/or a styrene isoprene styrene triblock polymer, which method comprises forming a seam which can be separated by a force in the range of 5 to 20 N/mm.sup.2 by sealing the film at a temperature in the range of from 123.degree. C. to 128.degree. C. [7.] A multichamber medical bag (1) made of a polymer material for preparation of medical mixed solutions, which has at least two chambers (8 and 9), which are separated from each other by a sealed separation zone (7) to be opened and are sealed in an outer border zone (2, 3), whereby in the seam of the outer border zone at least one tube (4) is provided in at least one chamber, characterized in that it is fabricated from a multilayer polymer film including two or more layers, which, at a first sealing temperature, forms a peelable bond and, at a second higher sealing temperature, forms a permanent bond, wherein the sealing layer has a matrix phase polymer system, wherein the matrix polymer is a polyethylene homopolymer, a polyethylene copolymer, a polypropylene homopolymer, or a polypropylene copolymer and the phase polymer is a styrene ethylene/butylene styrene triblock polymer with a styrene ethylene/butylene diblock component, a styrene ethylene/propylene styrene triblock polymer, a styrene butadiene styrene triblock polymer, and/or a styrene isoprene styrene triblock polymer.
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