Performance Properties Of Pouches For Aseptic Packaging Of Products
A pouch having improved delamination property and a process for making the pouch includes the steps of (I) providing a film structure and (II) preparing a pouch from said film structure provided in Step (I). The film structure comprises a core layer of at least one biaxially-oriented hygroscopic polymer, and the film structure comprises, on at least one side adjacent to the core layer, an adhesive layer comprising Pacacel™ adhesive.
1 . A process for making a pouch having improved delamination property, said process comprising the following steps:
(I) providing a film structure,
wherein said film structure comprises a core layer comprising at least one biaxially-oriented hygroscopic polymer, and
wherein said film structure comprises, on at least one side adjacent said core layer, an adhesive layer comprising Pacacel™ adhesive; and
(II) preparing a pouch from said film structure provided in Step (I).
2 . A process for making a pouch having improved pouch-drop performance, said process comprising the following steps:
(I) providing a film structure,
wherein said film structure comprises a core layer comprising at least one biaxially-oriented hygroscopic polymer, and
wherein said film structure comprises, on at least one side adjacent said core layer, an adhesive layer comprising Pacacel™ adhesive; and
(II) preparing a pouch from said film structure provided in Step (I).
3 . A process, as recited in claim 1 , wherein said step (II) comprises the following sub-steps:
(A) forming said film structure into a tubular member;
(B) heat-sealing the longitudinal edges of said tubular member;
(C) filling said tubular member with flowable material;
(D) heat-sealing a first transverse end of said tubular member to form a pouch; and
(E) sealing and cutting through a second transverse end of said tubular member to provide a filled pouch.
4 . A process, as recited in claim 2 , wherein said step (II) comprises the following sub-steps:
(A) forming said film structure into a tubular member;
(B) heat-sealing the longitudinal edges of said tubular member;
(C) filling said tubular member with flowable material;
(D) heat-sealing a first transverse end of said tubular member to form a pouch; and
(E) sealing and cutting through a second transverse end of said tubular member to provide a filled pouch.
5 . A process, as recited in claim 1 , wherein said at least one bi-axially oriented hygroscopic polymer comprises biaxially-oriented ethylene-vinyl alcohol copolymer or biaxially-oriented polyamide.
6 . A process, as recited in claim 5 , wherein said film structure comprises at least one skin layer, which is a monolayer or a co-extruded layer.
7 . A process, as recited in claim 6 , wherein said skin layer comprises a polymer blend comprising polyethylene or a polyethylene copolymer.
8 . A process, as recited in claim 7 , wherein said polymer blend comprises at least one of LLDPE, ULDPE, EVA, LDPE, HDPE, MDPE, and plastomer.
9 . A process, as recited in claim 6 , wherein said hygroscopic polymer is a biaxially-oriented polyamide, and said at least one skin layer comprises a co-extruded EVOH.
10 . A pouch prepared by the process recited in claims 2 .
11 . A pouch for containing flowable material having improved delamination property and/or improved pouch-drop performance, made from a film structure;
wherein said film structure comprises a core layer comprising at least one biaxially-oriented hygroscopic polymer; and
wherein said film structure comprises, on at least one side adjacent said core layer, an adhesive layer comprising Pacacel™ adhesive.
12 . A pouch, as recited in claim 11 , wherein said at least one bi-axially oriented hygroscopic polymer comprises biaxially-oriented ethylene-vinyl alcohol copolymer or biaxially-oriented polyamide.
13 . A pouch, as recited in claim 12 , wherein said film structure comprises at least one skin layer, which is a monolayer or a co-extruded layer.
14 . A pouch, as recited in claim 13 , wherein said skin layer comprises a polymer blend comprising polyethylene or a polyethylene copolymer.
15 . A pouch, as recited in claim 14 , wherein said polymer blend comprises at least one of LLDPE, ULDPE, EVA, LDPE, HDPE, MDPE, and plastomer.
16 . A pouch, as recited in claim 13 , wherein said hygroscopic polymer is a biaxially-oriented polyamide, and said at least one skin layer comprises a co-extruded EVOH.
17 . A pouch, as recited in claim 11 , comprising flowable material.
18 . A pouch, as recited in claim 11 , wherein said pouch is an aseptic pouch; and/or an ESL pouch; and/or a hot-fill pouch; and/or a pasteurization pouch.
19 . A bag for containing flowable material having improved delamination property and/or improved pouch-drop performance, made from a film structure;
wherein said film structure comprises a core layer comprising at least one biaxially-oriented hygroscopic polymer; and
wherein said film structure comprises, on at least one side adjacent said core layer, an adhesive layer comprising Pacacel™ adhesive.
20 . A bag, as recited in claim 19 , wherein said at least one bi-axially oriented hygroscopic polymer comprises biaxially-oriented ethylene-vinyl alcohol copolymer or biaxially-oriented polyamide.
21 . A bag, as recited in claim 20 , wherein said film structure comprises at least one skin layer, which is a monolayer or a co-extruded layer.
22 . A bag, as recited in claim 21 , wherein said skin layer comprises a polymer blend comprising polyethylene or a polyethylene copolymer.
23 . A bag, as recited in claim 21 , wherein said polymer blend comprises at least one of LLDPE, ULDPE, EVA, LDPE, HDPE, MDPE, and plastomer.
24 . A bag, as recited in claim 23 , wherein said hygroscopic polymer is a biaxially-oriented polyamide, and said at least one skin layer comprises a co-extruded EVOH.
25 . A bag, as recited in claim 19 , comprising flowable material.
26 . A bag, as recited in claim 19 , wherein said bag is an aseptic bag; and/or an ESL bag; and/or a hot-fill bag; and/or a pasteurization bag.