US20120033901A1 - Bag comprising machine direction oriented film - Google Patents

Bag comprising machine direction oriented film Download PDF

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Publication number
US20120033901A1
US20120033901A1 US13/136,036 US201113136036A US2012033901A1 US 20120033901 A1 US20120033901 A1 US 20120033901A1 US 201113136036 A US201113136036 A US 201113136036A US 2012033901 A1 US2012033901 A1 US 2012033901A1
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Prior art keywords
polyethylene
machine direction
direction oriented
layer
bag
Prior art date
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Abandoned
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US13/136,036
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Brian E. Votaw
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Individual
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Priority to US13/136,036 priority Critical patent/US20120033901A1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
    • B65D31/02—Bags or like containers made of paper and having structural provision for thickness of contents with laminated walls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/431—Joining the articles to themselves
    • B29C66/4312—Joining the articles to themselves for making flat seams in tubular or hollow articles, e.g. transversal seams
    • B29C66/43121—Closing the ends of tubular or hollow single articles, e.g. closing the ends of bags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/737—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined
    • B29C66/7371—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined oriented or heat-shrinkable
    • B29C66/73711—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined oriented or heat-shrinkable oriented
    • B29C66/73712—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined oriented or heat-shrinkable oriented mono-axially
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/02—Physical, chemical or physicochemical properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7128—Bags, sacks, sachets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/02—2 layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/24—All layers being polymeric
    • B32B2250/242—All polymers belonging to those covered by group B32B27/32
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/306—Resistant to heat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/514—Oriented
    • B32B2307/516—Oriented mono-axially
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/558—Impact strength, toughness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2439/00—Containers; Receptacles

Definitions

  • This invention relates to flexible bags having a polyethylene, machine direction oriented polyethylene wall structure.
  • Flexible packaging has played an increasing role in containing a wide variety of products ranging from liquid and dry chemicals to food products. Due to this wide variety of products, the flexible packaging industry is constantly changing the characteristics of the bag structures to meet the changing needs of the packers and consumers. Desired bag characteristics include optical clarity, rigidity, toughness, heat resistance, and recyclability.
  • Free standing, or stand-up pouches offer better retail presentation since the printed front panel of the pouch is directly in front of the consumer when either hanging from a store rack or sitting on a store shelf.
  • Stand-up pouches like the one disclosed in U.S. Pat. No. 3,738,565 to Ackley (1973) demonstrate the need for free standing bags.
  • Stand-up pouches often rely on a lamination of polyester, nylon, or polypropylene to polyethylene.
  • the polyester, nylon, or polypropylene offer good clarity, rigidity, and heat resistance while the polyethylene offers a sealant layer to seal the bag closed using heat and pressure. The heat resistance on the outer layer is used to resist sticking to the high temperature sealing jaws of the packer machine.
  • a sealant layer of polyethylene although needed to seal the bag closed, does not have the rigidity desired in many packaging applications to stand up on a display shelf.
  • a polyethylene to non-polyethylene lamination is problematic for recycling due to the incompatible materials found in the bag.
  • Machine Direction Oriented film or MDO is polyethylene having more heat resistance and rigidity than standard polyethylene film.
  • MDO film is sometimes sold as a sealant layer to packaging facilities to laminate to more rigid plastic films such as the previously mentioned polyester or polypropylene.
  • the entire package can be made of compatible plastics for recycling and still have the desired rigidity and heat resistance of other commonly used laminations.
  • the preferred embodiment of this invention uses MDO film on the outer wall and a standard polyethylene film on the inside wall of the flexible package.
  • FIG. 1 is an enlarged cross sectional view of the laminate components of the preferred embodiment.
  • FIG. 2 is a view of a stand-up pouch.
  • FIG. 3 is an enlarged view of the top of a stand-up pouch in accordance with one embodiment.
  • FIG. 4 is an enlarged view of the top of a stand-up pouch showing the polyethylene sealant layer heat sealed closed in accordance with one embodiment.
  • FIG. 1 The laminated film of the preferred embodiment of the present invention is shown in FIG. 1 .
  • Machine direction oriented polyethylene film ( 1 ) is laminated with a substantially thin layer of adhesive ( 3 ) or tie layer to a polyethylene sealant layer ( 2 ).
  • the machine direction oriented polyethylene ( 1 ) serves to stiffen the package, a trait desired in stand-up pouches.
  • the machine direction oriented polyethylene ( 1 ) also has a slightly higher melt temperature and therefore provides heat resistance when the inner sealant layers of polyethylene ( 2 ) are heat sealed together.
  • a stand-up pouch ( 4 ) is shown in FIG. 2 .
  • FIG. 3 illustrates the desired MDO ( 1 ) and polyethylene ( 2 ) films of the stand-up pouch ( 4 ) in FIG. 2 .
  • the adhesive ( 3 ) or tie layer may be used, this illustration is not meant to limit the scope of the invention.
  • the polyethylene layer ( 2 ) may be co-extruded with the MDO layer ( 1 ) and thus eliminate the adhesive layer ( 3 ).
  • One disadvantage of co-extruding MDO ( 1 ) and polyethylene ( 2 ) is the ability to print on the inside of the structure. If the film is laminated instead of co-extruded, the MDO ( 1 ) can be printed and the ink can be sandwiched between the MDO ( 1 ) and polyethylene ( 2 ) layers in the laminating process. This helps protect the printed graphics and also keeps the ink from coming into contact with the contents of the package.
  • FIG. 4 shows an enlarged view of the stand-up pouch ( 4 ) with the polyethylene sealant layers ( 2 ) fused together following the application of heat and pressure with the sealing jaws of a typical bag making machine.
  • the resulting package simplifies recycling due to the substantial polyethylene ( 2 ) and machine direction oriented polyethylene ( 1 ) composition. Further, additions of degradable additive may be combined with the machine direction oriented polyethylene ( 1 ) and polyethylene ( 2 ) to enhance degradation.

Abstract

A packaging container comprising an outer layer of machine direction oriented polyethylene (1) bonded to an inner layer of polyethylene (2) by a bonding layer such as adhesive (3). The machine direction oriented polyethylene (1) serves to stiffen the package and provide resistance to heat when the inner sealant layers of polyethylene (2) are heat sealed together. The resulting package (4) simplifies recycling due to the substantial polyethylene composition. Further, additions of degradable additive may be combined with the machine direction oriented polyethylene (1) and polyethylene (2) to enhance degradation.

Description

    CROSS REFERENCE TO RELATED APPLICATIONS: This application claims the benefit of provisional patent application Ser. No. 61/400,886, filed 2010 Aug. 4 by the present inventor. FEDERALLY SPONSORED RESEARCH
  • None
    • BACKGROUND
  • 1. Field
  • This invention relates to flexible bags having a polyethylene, machine direction oriented polyethylene wall structure.
  • 2. Prior Art
  • Flexible packaging has played an increasing role in containing a wide variety of products ranging from liquid and dry chemicals to food products. Due to this wide variety of products, the flexible packaging industry is constantly changing the characteristics of the bag structures to meet the changing needs of the packers and consumers. Desired bag characteristics include optical clarity, rigidity, toughness, heat resistance, and recyclability.
  • Free standing, or stand-up pouches, offer better retail presentation since the printed front panel of the pouch is directly in front of the consumer when either hanging from a store rack or sitting on a store shelf. Stand-up pouches, like the one disclosed in U.S. Pat. No. 3,738,565 to Ackley (1973) demonstrate the need for free standing bags. Stand-up pouches often rely on a lamination of polyester, nylon, or polypropylene to polyethylene. The polyester, nylon, or polypropylene offer good clarity, rigidity, and heat resistance while the polyethylene offers a sealant layer to seal the bag closed using heat and pressure. The heat resistance on the outer layer is used to resist sticking to the high temperature sealing jaws of the packer machine. A sealant layer of polyethylene, although needed to seal the bag closed, does not have the rigidity desired in many packaging applications to stand up on a display shelf. A polyethylene to non-polyethylene lamination, however, is problematic for recycling due to the incompatible materials found in the bag.
  • Other modifications to the bag film structure have been made in the past to achieve different bag characteristics. U.S. Pat. No. 5,827,586 to Yamashita (1998) and U.S. Pat. No. 6,306,472 to Buelow (2001) are examples of film modifications that were needed. Neither of these address the rigidity and recyclability concerns of today's stand-up pouches.
  • Machine Direction Oriented film or MDO is polyethylene having more heat resistance and rigidity than standard polyethylene film. MDO film is sometimes sold as a sealant layer to packaging facilities to laminate to more rigid plastic films such as the previously mentioned polyester or polypropylene. By laminating MDO film to polyethylene, the entire package can be made of compatible plastics for recycling and still have the desired rigidity and heat resistance of other commonly used laminations.
  • The preferred embodiment of this invention uses MDO film on the outer wall and a standard polyethylene film on the inside wall of the flexible package.
    • DRAWINGS
  • FIG. 1 is an enlarged cross sectional view of the laminate components of the preferred embodiment.
  • FIG. 2 is a view of a stand-up pouch.
  • FIG. 3 is an enlarged view of the top of a stand-up pouch in accordance with one embodiment.
  • FIG. 4 is an enlarged view of the top of a stand-up pouch showing the polyethylene sealant layer heat sealed closed in accordance with one embodiment.
    •  DRAWINGS—REFERENCE NUMERALS
  • 1 Machine direction oriented polyethylene layer
  • 2 Polyethylene sealant layer
  • 3 Adhesive layer
  • 4 Stand-up pouch
    • DETAILED DESCRIPTION
  • The laminated film of the preferred embodiment of the present invention is shown in FIG. 1. Machine direction oriented polyethylene film (1) is laminated with a substantially thin layer of adhesive (3) or tie layer to a polyethylene sealant layer (2). When the laminated film is formed to make a stand-up pouch (4) or flat bag, the machine direction oriented polyethylene (1) serves to stiffen the package, a trait desired in stand-up pouches. The machine direction oriented polyethylene (1) also has a slightly higher melt temperature and therefore provides heat resistance when the inner sealant layers of polyethylene (2) are heat sealed together. A stand-up pouch (4) is shown in FIG. 2.
  • FIG. 3 illustrates the desired MDO (1) and polyethylene (2) films of the stand-up pouch (4) in FIG. 2. Although the adhesive (3) or tie layer may be used, this illustration is not meant to limit the scope of the invention. The polyethylene layer (2) may be co-extruded with the MDO layer (1) and thus eliminate the adhesive layer (3). One disadvantage of co-extruding MDO (1) and polyethylene (2) is the ability to print on the inside of the structure. If the film is laminated instead of co-extruded, the MDO (1) can be printed and the ink can be sandwiched between the MDO (1) and polyethylene (2) layers in the laminating process. This helps protect the printed graphics and also keeps the ink from coming into contact with the contents of the package.
  • FIG. 4 shows an enlarged view of the stand-up pouch (4) with the polyethylene sealant layers (2) fused together following the application of heat and pressure with the sealing jaws of a typical bag making machine.
  • The resulting package simplifies recycling due to the substantial polyethylene (2) and machine direction oriented polyethylene (1) composition. Further, additions of degradable additive may be combined with the machine direction oriented polyethylene (1) and polyethylene (2) to enhance degradation.

Claims (1)

1. A flexible packaging container comprising:
a. an outer layer of substantially machine direction oriented polyethylene,
b. a middle bonding layer of material found in the category containing adhesive,
c. an inner layer of polyethylene,
whereby said outer layer of said machine direction oriented polyethylene stiffens said flexible packaging container and said inner layer of polyethylene facilitates heat sealing to a corresponding inner layer of polyethylene of said flexible packaging container side wall.
US13/136,036 2010-08-04 2011-07-21 Bag comprising machine direction oriented film Abandoned US20120033901A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US13/136,036 US20120033901A1 (en) 2010-08-04 2011-07-21 Bag comprising machine direction oriented film

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US40088610P 2010-08-04 2010-08-04
US13/136,036 US20120033901A1 (en) 2010-08-04 2011-07-21 Bag comprising machine direction oriented film

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US20120033901A1 true US20120033901A1 (en) 2012-02-09

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2987744A1 (en) * 2014-08-22 2016-02-24 Mondi Consumer Packaging Technologies GmbH Side folding packaging bag and method for producing a side folding packaging bag
WO2016128865A1 (en) 2015-02-10 2016-08-18 Nova Chemicals (International) S.A. Laminated structure and stand up pouch made thereof
WO2018006980A1 (en) * 2016-07-08 2018-01-11 Constantia Hueck Folien Gmbh & Co. Kg Recyclable polyethylene film
JP2018202686A (en) * 2017-05-31 2018-12-27 大日本印刷株式会社 Laminate and production method of the same
EP3317103B1 (en) 2015-06-30 2020-09-02 Dow Global Technologies LLC Multilayer structures and articles comprising the same
US11034138B2 (en) 2015-05-29 2021-06-15 Dow Global Technologies Llc Coated films and packages formed from same
WO2022047692A1 (en) * 2020-09-03 2022-03-10 The Procter & Gamble Company Container comprising laminate of polyethylene
EP3902746A4 (en) * 2018-12-28 2022-11-02 Dow Global Technologies LLC Polyethylene pouch and the fabrication method thereof
US11590745B2 (en) 2017-09-29 2023-02-28 Dow Global Technologies Llc Partially coated films and packages formed from same
WO2023044067A1 (en) * 2021-09-17 2023-03-23 Proampac Holdings Inc. Recyclable packaging film and method and article with mechanically pre-slit controlled tear line

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US5888648A (en) * 1996-09-12 1999-03-30 Mobil Oil Corporation Multi-layer hermetically sealable film and method of making same
US6117465A (en) * 1995-09-12 2000-09-12 The Dow Chemical Company Pouches for packaging flowable materials
US6391411B1 (en) * 1999-06-03 2002-05-21 Printpack Illinois, Inc. Machine direction oriented high molecular weight, high density polyethylene films with enhanced water vapor transmission properties
US20080233375A1 (en) * 2007-03-23 2008-09-25 Wright Sydney R Films for use in high strength bags
US7537829B2 (en) * 2001-02-22 2009-05-26 Exxonmobil Oil Corporation Multi-layer films having improved sealing properties
US8034461B2 (en) * 2005-02-09 2011-10-11 Equistar Chemicals, Lp Preparation of multilayer polyethylene thin films

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6117465A (en) * 1995-09-12 2000-09-12 The Dow Chemical Company Pouches for packaging flowable materials
US5888648A (en) * 1996-09-12 1999-03-30 Mobil Oil Corporation Multi-layer hermetically sealable film and method of making same
US6391411B1 (en) * 1999-06-03 2002-05-21 Printpack Illinois, Inc. Machine direction oriented high molecular weight, high density polyethylene films with enhanced water vapor transmission properties
US7537829B2 (en) * 2001-02-22 2009-05-26 Exxonmobil Oil Corporation Multi-layer films having improved sealing properties
US8034461B2 (en) * 2005-02-09 2011-10-11 Equistar Chemicals, Lp Preparation of multilayer polyethylene thin films
US20080233375A1 (en) * 2007-03-23 2008-09-25 Wright Sydney R Films for use in high strength bags

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2987744A1 (en) * 2014-08-22 2016-02-24 Mondi Consumer Packaging Technologies GmbH Side folding packaging bag and method for producing a side folding packaging bag
EP3256317B1 (en) 2015-02-10 2019-09-18 Nova Chemicals (International) S.A. Laminated structure and stand up pouch made thereof
WO2016128865A1 (en) 2015-02-10 2016-08-18 Nova Chemicals (International) S.A. Laminated structure and stand up pouch made thereof
US11034138B2 (en) 2015-05-29 2021-06-15 Dow Global Technologies Llc Coated films and packages formed from same
EP3317103B1 (en) 2015-06-30 2020-09-02 Dow Global Technologies LLC Multilayer structures and articles comprising the same
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