Liqui-box Corporation

Nicholas Farkas

Alan Keith Breck

Lamy Chopin

Yuqi Cai

Paul Nick Georgelos

The disclosure provides co-extruded, multi-layer films, including metallized barrier films and non-barrier films, and articles of manufacture that include the films, such as flexible bags and containers for flowable materials. The films and articles that include the films have good heat retention, and barrier properties, as well as good flex-crak resistance and toughness. The films and articles that include the films have a metallized barrier core layer of ethylene-vinyl alcohol (EVOH) copolymer wherein both the metal and EVOH are in amounts that achieve the heat retention, flex-crack resistance, toughness, and barrier properties, while allowing for the recycling of the films and articles of manufacture.

Recyclable metallized barrier films and bags for packaging flowable materials

The disclosure provides ethylene/α-olefin copolymer based co-extruded, multi-layer films, including barrier films and non-barrier films, and articles of manufacture that include the films, such as flexible bags and containers for flowable materials. The films and articles that include the films have improved flex-crak reisstance and toughness. The films and articles that include the films have good barrier properties as the barrier films include a core layer of ethylene-vinyl alcohol (EVOH) copolymer having a high ethylene content. The low amount of EVOH copolymer in the total film that is needed to achieve the flex-crack resistance, toughness, and good barrier properties, further allow for the recycling of the films and articles of manufacture.

Recyclable flexible films and bags for packaging flowable materials

The disclosure provides ethylene/α-olefin copolymer based co-extruded, multi-layer films, including barrier films and non-barrier films, and articles of manufacture that include the films, such as flexible bags and containers for flowable materials. The films and articles that include the films have improved flex-crak resistance and toughness. The films and articles that include the films have good barrier properties as the barrier films include a core layer of ethylene-vinyl alcohol (EVOH) copolymer having a high ethylene content. The low amount of EVOH copolymer in the total film that is needed to achieve the flex-crack resistance, toughness, and good barrier properties, further allow for the recycling of the films and articles of manufacture.

The disclosure provides ethylene/α-olefin interpolymer and/or copolymer based co-extruded, multi-layer films, including high barrier films and non-barrier films, and articles of manufacture that include the films, such as flexible bags and containers for flowable materials. The films and articles that include the films have good flex-crak resistance and toughness. The films and articles that include the films have good high barrier properties as the barrier films include a core layer of ethylene-vinyl alcohol (EVOH) copolymer. The relatively low amount of EVOH copolymer in the total film that is needed to achieve the flex-crack resistance, toughness, and high barrier properties, further allow for the recycling of the films and articles of manufacture.

Recyclable flexible high barrier films and bags for packaging flowable materials

The disclosure provides ethylene/&#x3b1;-olefin copolymer based co-extruded, multi-layer films, including barrier films and non-barrier films, and articles of manufacture that include the films, such as flexible bags and containers for flowable materials. The films and articles that include the films have improved flex-crak resistance and toughness. The films and articles that include the films have good barrier properties as the barrier films include a core layer of ethylene-vinyl alcohol (EVOH) copolymer having a high ethylene content. The low amount of EVOH copolymer in the total film that is needed to achieve the flex-crack resistance, toughness, and good barrier properties, further allow for the recycling of the films and articles of manufacture.

Multi-layer films for making bags for containing flowable materials, in particular to large bags for dairy products. The multi-layer films have an outer and an inner sealant layer and a core layer and optionally, an interposed layer positioned between the outer sealant layer and the core layer and between the core layer and the inner sealant layer. The outer and inner sealant layers contain an ethylene/&#x3b1;-olefin interpolymer composition and the intermediate layer optionally contains this interpolymer composition.

Bag-in-box film for packaging refrigerated liquids

This invention relates to inner-plies for bulk-bags that surprisingly offer not only high thermal resistance, but also high flex-crack resistance. This invention also relates to such bulk-bags made for packaging of flowable materials, aseptic or otherwise, and the process for improving their flex-crack and thermal resistance. Preferably, the packaging is aseptic. More specifically, the inner-ply of the invention comprises a resin blend comprising the Exceed&#xae; XP resin; an LDPE resin or an ethylene&#x2014;&#x3b1;-olefin copolymer (EAO copolymer); or a blend of said LDPE resin and said EAO copolymer, with flex-crack resistance improved in both machine direction and transverse direction, in conjunction with an improved thermal resistance. Thus, in addition to possessing good flex-crack resistance, the bulk-bags can withstand steam sterilization and/or aseptic packaging conditions.

Flex-crack resistant and thermally resistant aseptic bulk bags for flexible packaging

This invention relates to inner-plies for bulk-bags that surprisingly offer not only high thermal resistance, but also high flex-crack resistance. This invention also relates to such bulk-bags made for packaging of flowable materials, aseptic or otherwise, and the process for improving their flex-crack and thermal resistance. Preferably, the packaging is aseptic. More specifically, the inner-ply of the invention comprises a resin blend comprising the Exceed&#xae; XP resin; an LDPE resin or an ethylene-&#x3b1;-olefin copolymer (EAO copolymer); or a blend of said LDPE resin and said EAO copolymer, with flex-crack resistance improved in both machine direction and transverse direction, in conjunction with an improved thermal resistance. Thus, in addition to possessing good flex-crack resistance, the bulk-bags can withstand steam sterilization and/or aseptic packaging conditions.

This invention relates to bags and pouches made from films for packaging of flowable materials, in particular liquids that are made from blends of polyethylene and polypropylene useful to in addition to possessing good flex crack resistance, these films can withstand steam sterilization and/or aseptic packaging conditions as they have Hot Tack Initiation Temperatures in the range of from about 100&#xb0; C. to about 140&#xb0; C. and Hot Tack Strengths of not more than 5 N/inch in the temperature range from 100&#xb0; C. to 150&#xb0; C.

Resin blend of ethylene alpha olefin interpolymer and heterogeneous interpolymer for liquid packaging films

This invention relates to blends of polyethylene and polypropylene useful to make films for packaging of flowable materials, in particular liquids. In addition to possessing good flex crack resistance, these films can withstand steam sterilization and/or aseptic packaging conditions as they have Hot Tack Initiation Temperatures in the range of from about 100&#xb0; C. to about 140&#xb0; C. and Hot Tack Strengths of not more than 5 N/inch in the temperature range from 100&#xb0; C. to 150&#xb0; C.

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Glenburnie, Canada

Nicholas Farkas