US20110155622A1 - Foodstuff container - Google Patents

Foodstuff container Download PDF

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Publication number
US20110155622A1
US20110155622A1 US12/995,311 US99531109A US2011155622A1 US 20110155622 A1 US20110155622 A1 US 20110155622A1 US 99531109 A US99531109 A US 99531109A US 2011155622 A1 US2011155622 A1 US 2011155622A1
Authority
US
United States
Prior art keywords
foodstuff
container
substitutes
methacrylate
polyacrylate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US12/995,311
Other languages
English (en)
Inventor
Charles Propst, JR.
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Spectra Kote Corp
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to US12/995,311 priority Critical patent/US20110155622A1/en
Publication of US20110155622A1 publication Critical patent/US20110155622A1/en
Assigned to SPECTRA-KOTE CORPORATION reassignment SPECTRA-KOTE CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: PROPST, CHARLES W., JR.
Assigned to SPECTRA-KOTE CORPORATION reassignment SPECTRA-KOTE CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: PROPST, CHARLES W.
Abandoned legal-status Critical Current

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Classifications

    • 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
    • B32B29/00—Layered products comprising a layer of paper or cardboard
    • B32B29/06—Layered products comprising a layer of paper or cardboard specially treated, e.g. surfaced, parchmentised
    • 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
    • B32B29/00—Layered products comprising a layer of paper or cardboard
    • B32B29/002—Layered products comprising a layer of paper or cardboard as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B29/005—Layered products comprising a layer of paper or cardboard as the main or only constituent of a layer, which is next to another layer of the same or of a different material next to another layer of paper or cardboard layer
    • 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
    • B32B29/00—Layered products comprising a layer of paper or cardboard
    • B32B29/08—Corrugated paper or cardboard
    • 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
    • B32B2255/00—Coating on the layer surface
    • B32B2255/12—Coating on the layer surface on paper layer
    • 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
    • B32B2255/00—Coating on the layer surface
    • B32B2255/26—Polymeric coating
    • 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
    • B32B2307/70—Other properties
    • B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
    • 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
    • B32B2307/70—Other properties
    • B32B2307/726—Permeability to liquids, absorption
    • B32B2307/7265—Non-permeable
    • 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
    • B32B2307/70—Other properties
    • B32B2307/748—Releasability
    • 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
    • B32B2439/70—Food packaging
    • 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
    • B65D2581/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D2581/34—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents for packaging foodstuffs or other articles intended to be cooked or heated within

Definitions

  • This invention relates to a new class of materials to be used as substitutes for polyethylene and poly(ethylene terephthalate), commonly known as PET.
  • Polyethylene and PET have many uses.
  • waterproof or water-resistant paper or paperboard can be made with polyethylene and PET coatings.
  • Many products can be produced from such waterproof or water-resistant paper or paperboard, for example: dishes, trays or other containers. These products can be used, for example, in prepackaging foodstuffs that are to be reheated or cooked in a microwave oven.
  • waterproof paper or paperboard, coated or laminated with a multi-thermoplastic material, such as high-density polyethylene, or coated with an aqueous latex solvent solution of a polymer include, among the commercially important thermoplastic products PET.
  • the resulting paper or paperboard is useful for boxes, bags, drums, and case liners among other industrial products and packaging materials. Excellent barrier properties to water, oil, water vapor, oxygen, and some other gases make paper and paperboard coated with these resins especially valuable and flexible for use as packaging materials and boxes.
  • PET is not recyclable when contained on paper and/or paperboard products (See, the aforementioned Kirk-Othmer, Volume 3, Pages 497-502). PET is not recyclable when in a mixture with paper and/or paperboard products. PET is not recyclable when layered with paper and/or paperboard products. Thus, a need exists to identify a suitable alternative for polyethylene and PET. Otherwise, timber resources will be further despoiled to create new or replacement products; scarce landfill space will be filled; and incineration of used paper products will cause further pollution.
  • the present invention provides a substitute for paper or paperboard products coated or laminated with multi-thermoplastic materials, such as polyethylene, or coated with an aqueous latex solvent solution of such materials, such as PET.
  • multi-thermoplastic materials such as polyethylene
  • an aqueous latex solvent solution of such materials such as PET.
  • the polyethylene and/or PET replacement coating is also useful for all types of paper, bag stock, ream wrap, roll wrap, corrugated, folding board, solid fiber, paper-based microwavable or conventional oven, food trays.
  • waterproof or water-resistant paper and paperboard products are formed by substituting an acrylic containing material for the polyethylene and/or PET previously utilized.
  • acrylics or polyacrylates which are preferably derivatives of acrylic acid (CH 2 ⁇ CHCO 2 H), or methacrylic acid (CH 2 ⁇ CH(CH 3 )CH 2 H), can be made into polymeric substances to replace PET or polyethylene in products, such as waterproof or water-resistant paper and paperboard.
  • acrylics or polyacrylates can be used to prepare coatings and solution polymers and polymerization processes providing high yields of polymers in a form suitable for a variety of applications.
  • the polymer products can be made to vary widely in physical properties through controlled variation in the ratios of monomers, employed in their preparation, cross-linking, and control of molecular weight. They share common qualities of high resistance to chemical environmental attack, excellent clarity, and attractive strength properties.
  • acrylic acid itself methyl, ethyl, butyl, isobutyl, and 2-ethyl acrylates are commercially manufactured on a large scale and are available at better than 98-99% purity.
  • Suitable cross-linking agents for the acrylates include compounds of zinc, such as zinc oxide solution.
  • Zinc oxide solution is a fine suspension of zinc oxide particles usually in an aqueous vehicle.
  • Many other compounds can be used as cross-linking agents.
  • at least one crosslinking agent is selected from the group consisting of zinc oxide, ammonium oxide, calcium oxide, calcium stearate, magnesium stearate, aluminum oxide, isostearate, magnesium oxide, stannous oxide, tungsten oxide, sodium tungstate, sodium tungstate dihydrate, titanium oxide, aluminum stearate, zinc octoate, zinc salts of fatty acids, zirconium oxide, calcium isosterate, calcium salts of fatty acids, magnesium salts of fatty acids, and aluminum salts of fatty acids.
  • the cross-linking agent includes a salt (as described herein) plus a butyric acid and 5-carbon acids, such as isobolic 2-methyl buteric and N-valeric acid.
  • the fatty acids are fatty acids of animal and/or vegetable fats and oils and would be exempt from kosher compliance, since the potential use of animal oils in the origin of the animal in question may be unspecified. In such cases, the inorganic substances would be preferred. It is considered within the scope of this invention to incorporate more than one substance to form the cross-linking agent.
  • cross-linking agent includes the above-described compositions as well as heat, radiation or any other method for initiation a cross-linking reaction in acrylic materials.
  • cross-linking agents include ZINC OXIDE SOLUTION NO. 1, available from Johnson Wax Specialty Chemicals of Racine, Wis.
  • the cross-linking agent is used in amounts sufficient to cross-link the acrylic material.
  • the acrylic materials of the present invention are preferably coated onto the paper or paperboard material in any of a variety of ways.
  • rolls of paper and kraft liners are unwound from a parent reel or a slit or slash winder into rolls of smaller size or feed into sheeters, such as cut-size sheeters.
  • Two methods of coating boxes or other paper products are preferably utilized.
  • the first method is identified as a curtain coating process.
  • a completed board is passed through a curtain of emulsion of an acrylic as in the present invention in a procedure commonly known in the art of paper making as “curtain coating.”
  • the face side of the board and the opposite side are coated with the emulsion.
  • the second coating process is “cascading.”
  • the cascading procedure is different from the curtain coating procedure in that a regularly corrugated box of any shape or size can be placed on one end, such that the corrugated flutes are vertical, to allow the emulsion to permeate the entire structure with the acrylic emulsion cascading around and through the container in a flat position that is easy to stack for shipping.
  • Other methods of coating include coating the paper or paperboard during the paper making process.
  • the paperboard during the paper making process or a paper or kraft grade of liner may be sprayed with an emulsion after the press section, but before the drying section of a typical paper making process or may be dipped into an emulsion such that in a typical size press or applied before or after the calendar section.
  • coating means “coating” or “impregnation” unless otherwise indicated.
  • the coatings of the present invention exhibit excellent resistance to penetration by oil, grease and other materials, but they also exhibit excellent release properties when utilized as trays or pans containing a flour or flour substitute foodstuff, eggs, pastas, and sauces and vegetables and/or meets with or without gravies or sauces.
  • the present invention has a wide range of packaging of foodstuffs that may require heating, cooking, reheating, microwave and/or other ovens.
  • FIG. 1 shows a photograph, illustrating various releases of yellow cake and traditional fudge brownies as baked in baking trays;
  • FIG. 2 shows a photograph of Quiche baked in a tray having a 56 lb pine liner
  • FIG. 3 shows a photograph of trays made according to the present invention after release of the Quiche baked therein.
  • coatings and products are compared to give a wide variety of test conditions based on available samples. All tests were conducted using a 10 oz. round “pie pan,” six different coating compositions chosen are as follows:
  • Sample 4, 5 and 6 have better release than samples 1, 2, and 3. Sample 4 had the best release, especially if well-baked. A summary of release properties can be found in FIG. 1 .
  • a second battery of tests was conducted similar to the first round including a comparative example to PET.
  • the coatings are as follows:
  • FIG. 2 shows a photographic illustration of the sample 1, as compared to FIG. 3 , which is a photographic comparison of the trays made according to the present invention after release of the product.

Landscapes

  • Wrappers (AREA)
  • Laminated Bodies (AREA)
  • Paper (AREA)
  • Cartons (AREA)
US12/995,311 2008-05-30 2009-06-01 Foodstuff container Abandoned US20110155622A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US12/995,311 US20110155622A1 (en) 2008-05-30 2009-06-01 Foodstuff container

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US5771408P 2008-05-30 2008-05-30
PCT/US2009/045849 WO2009146454A1 (fr) 2008-05-30 2009-06-01 Récipient pour aliments
US12/995,311 US20110155622A1 (en) 2008-05-30 2009-06-01 Foodstuff container

Publications (1)

Publication Number Publication Date
US20110155622A1 true US20110155622A1 (en) 2011-06-30

Family

ID=41377625

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/995,311 Abandoned US20110155622A1 (en) 2008-05-30 2009-06-01 Foodstuff container

Country Status (7)

Country Link
US (1) US20110155622A1 (fr)
EP (1) EP2318290A4 (fr)
CN (1) CN102089225B (fr)
AU (1) AU2009251255B2 (fr)
CA (1) CA2726586C (fr)
NZ (1) NZ589805A (fr)
WO (1) WO2009146454A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114669461A (zh) * 2022-03-25 2022-06-28 东莞市金牌包装材料有限公司 一种自嗨锅用环保纸板原材的表面处理工艺及处理装置

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3676058A (en) * 1970-05-25 1972-07-11 Gray Ind Inc Microwave treating apparatus and method
US3873735A (en) * 1971-05-04 1975-03-25 Nabisco Inc Food package for heating and venting
US5470594A (en) * 1992-06-30 1995-11-28 Adm Tronics Unlimited, Inc. Paper pouch for food products
US5763100A (en) * 1993-05-10 1998-06-09 International Paper Company Recyclable acrylic coated paper stocks and related methods of manufacture
US5981011A (en) * 1992-01-22 1999-11-09 A*Ware Technologies, L.C. Coated sheet material
US6066379A (en) * 1993-09-28 2000-05-23 International Paper Company Repulpable, water repellant paperboard
US6649213B2 (en) * 2000-11-16 2003-11-18 George Debikey Methods and compositions for preventing adverse effects of water upon a printed substrate
US20050120915A1 (en) * 2002-01-11 2005-06-09 New Ice Limited Biodegradable or compostable containers
US20050153088A1 (en) * 2003-12-22 2005-07-14 Russell Jeffory E. Disposable containers coated with a latex coating
US20060122318A1 (en) * 2004-11-18 2006-06-08 Jho Chang H Food-release packaging
GB2433450A (en) * 2005-12-22 2007-06-27 Colin Neale Food packaging paperboard
US20070164045A1 (en) * 2006-01-13 2007-07-19 Wydler Hans L Dual mode container

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE60332554D1 (de) * 2002-12-03 2010-06-24 Thomas James Bate Antihaftbeschichtungund herstellungsverfahren dafür

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3676058A (en) * 1970-05-25 1972-07-11 Gray Ind Inc Microwave treating apparatus and method
US3873735A (en) * 1971-05-04 1975-03-25 Nabisco Inc Food package for heating and venting
US5981011A (en) * 1992-01-22 1999-11-09 A*Ware Technologies, L.C. Coated sheet material
US5470594A (en) * 1992-06-30 1995-11-28 Adm Tronics Unlimited, Inc. Paper pouch for food products
US5763100A (en) * 1993-05-10 1998-06-09 International Paper Company Recyclable acrylic coated paper stocks and related methods of manufacture
US6066379A (en) * 1993-09-28 2000-05-23 International Paper Company Repulpable, water repellant paperboard
US6187389B1 (en) * 1995-01-05 2001-02-13 A*Ware Technologies, L.C. Aqueous based image receptive coating and process for producing same
US6649213B2 (en) * 2000-11-16 2003-11-18 George Debikey Methods and compositions for preventing adverse effects of water upon a printed substrate
US20050120915A1 (en) * 2002-01-11 2005-06-09 New Ice Limited Biodegradable or compostable containers
US20050153088A1 (en) * 2003-12-22 2005-07-14 Russell Jeffory E. Disposable containers coated with a latex coating
US20060122318A1 (en) * 2004-11-18 2006-06-08 Jho Chang H Food-release packaging
GB2433450A (en) * 2005-12-22 2007-06-27 Colin Neale Food packaging paperboard
US20070164045A1 (en) * 2006-01-13 2007-07-19 Wydler Hans L Dual mode container

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
"Microwave Baked Potato" November 6, 2006http://web.archive.org/web/20061106124817/http://allrecipes.com/Recipe/Microwave-Baked-Potato/Detail.aspx *
"Microwave Cakes and Bakes Recipes" February 14, 2006http://web.archive.org/web/20060214184142/http://www.allbakingrecipes.com/baking-recipes/microwave-cakes-bakes/microwave-cakes-bakes.php *
"Unleavened Wheat Bread" March 20, 2006 - Recipelink.comhttp://www.recipelink.com/msgbrd/board_2/2006/MAR/18547.html *
Definition of "cooking." Websters New World Dictionary, Third College Edition. Simon & Schuster, 1988 *
Definition of "tray." Websters New World Dictionary, Third College Edition, Simon & Schuster 1988 *

Also Published As

Publication number Publication date
AU2009251255A1 (en) 2009-12-03
CA2726586A1 (fr) 2009-12-03
NZ589805A (en) 2012-11-30
EP2318290A1 (fr) 2011-05-11
AU2009251255B2 (en) 2014-03-20
CN102089225B (zh) 2013-06-12
CN102089225A (zh) 2011-06-08
EP2318290A4 (fr) 2013-10-30
WO2009146454A1 (fr) 2009-12-03
CA2726586C (fr) 2016-09-20

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Legal Events

Date Code Title Description
AS Assignment

Owner name: SPECTRA-KOTE CORPORATION, PENNSYLVANIA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:PROPST, CHARLES W., JR.;REEL/FRAME:027769/0417

Effective date: 20120206

AS Assignment

Owner name: SPECTRA-KOTE CORPORATION, PENNSYLVANIA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:PROPST, CHARLES W.;REEL/FRAME:027796/0164

Effective date: 20120206

STCB Information on status: application discontinuation

Free format text: ABANDONED -- AFTER EXAMINER'S ANSWER OR BOARD OF APPEALS DECISION