WO2008021335A2 - Méthode de traitement à haute température d'un article grâce à un emballage refermable ayant une ouverture - Google Patents

Méthode de traitement à haute température d'un article grâce à un emballage refermable ayant une ouverture Download PDF

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Publication number
WO2008021335A2
WO2008021335A2 PCT/US2007/017937 US2007017937W WO2008021335A2 WO 2008021335 A2 WO2008021335 A2 WO 2008021335A2 US 2007017937 W US2007017937 W US 2007017937W WO 2008021335 A2 WO2008021335 A2 WO 2008021335A2
Authority
WO
WIPO (PCT)
Prior art keywords
bag
recited
article
reclosable
vent
Prior art date
Application number
PCT/US2007/017937
Other languages
English (en)
Other versions
WO2008021335A3 (fr
Inventor
Sean Edward Dowd
Perry Malik
Original Assignee
Illinois Tool Works Inc.
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 Illinois Tool Works Inc. filed Critical Illinois Tool Works Inc.
Publication of WO2008021335A2 publication Critical patent/WO2008021335A2/fr
Publication of WO2008021335A3 publication Critical patent/WO2008021335A3/fr

Links

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
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/01—Ventilation or drainage of bags
    • 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
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/16—End- or aperture-closing arrangements or devices
    • B65D33/25—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners
    • B65D33/2508—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor
    • 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
    • B65D2205/00—Venting means

Definitions

  • This invention generally relates to high-temperature vented reclosable bags, and in particular, to reclosable bags.
  • reclosable bags having press-to-close or slide-to- close reclosable feature were designed for food storage applications such as non-refrigerated and refrigerated storage. These bag products were manufactured from a combination- of polyethylene resins with a reclosable feature. Such reclosable bag products were not designed for high-temperature applications; for example, they are not microwavable.
  • the reclosable bags are of a type made of flexible material able to withstand high temperature, for example, equal to or greater than the boiling point of water, and are vented to allow the relief of pressure buildup inside the bag during heating.
  • the disclosed treatment methods have application in the sterilizing or cleaning of household items, such as breast milk pump parts for nursing mothers, and medical instalments for hospital, dental and military applications.
  • One aspect of the invention is a method of treating an article, comprising the following steps: (a) placing an article inside a reclosable bag having at least one vent; (b) closing the bag with the article inside; and (c) heating the bag to a high temperature.
  • Another aspect of the invention is a method of treating an article, comprising the following steps: (a) placing an article inside a reclosable bag having at least one vent; (b) closing the bag with the article inside; and (c) exposing the bag and its contents to radiation from an energy source.
  • a further aspect of the invention is a bag comprising a receptacle having an interior volume and a mouth, and a reclosable feature that closes the mouth of said receptacle when in a reclosed state
  • the receptacle comprises front and rear panels each having two sides, a top and a bottom, wherein marginal portions of one side of the front panel are sealed to corresponding marginal portions of one side of the rear panel to form first and second side seals, the first and second side seals being separated by an unsealed zone wherein the marginal portions of the one side of the front panel and the one side of the rear panel are not sealed together, the unsealed zone forming a vent that communicates with the interior volume.
  • FIG. 1 is a drawing showing a front view of a vented reclosable bag in accordance with one embodiment of the invention.
  • FIG. 2 is a drawing showing a sectional view of a vented reclosable bag in accordance with one variation of the embodiment shown in FIG. 1.
  • Each reclosable bag is made of flexible material, such as polypropylene, plastic lamination films or other high- melting-temperature flexible material.
  • Each reclosable bag has a reclosable feature, e.g., a plastic zipper comprising a pair of zipper strips having mutually interlockable closure profiles.
  • the plastic zipper may be of the press-to-close variety or the slide-to-close variety.
  • the slider may be of the type that closes an underlying portion of the zipper as it moves in either direction or it may be of the type that closes an underlying portion of the zipper when it travels in one direction and opens an underlying portion of the zipper when it travels in the opposite direction.
  • each reclosable bag has one or more vents for pressure relief.
  • a reclosable feature of a reclosable bag is opened and an article to be sterilized or cleaned is inserted through the open mouth and placed inside the bag.
  • An amount of water is also placed inside the bag, e.g., by pouring water from a bottle and into the bag.
  • Preferably the water is distilled. Naturally the water will accumulate at the bottom of the bag due to the effect of gravity.
  • the reclosable feature on the bag is then closed. After the bag is closed, the bag and its contents are exposed to a source of energy that raises the temperature inside the bag to, for example, at least the boiling point of water.
  • the bag and its contents may be placed inside a microwave oven, which oven is then set to cook the bag and its contents to the extent that the water inside the bag boils.
  • the article inside the bag is exposed to superheated or boiling water that sterilizes or cleans the article.
  • the pressure buildup inside the bag is relieved by the release of steam through one or more vents formed in the reclosable bag.
  • the pressure relief prevents the bag from bursting or otherwise having its integrity compromised.
  • the bag is cooked in the microwave oven until substantially all of the water inside the bag has evaporated. After cooling, the sterilized or cleaned article inside the intact bag can be stored for future use.
  • FIG. 1 depicts one embodiment of a high-temperature vented reclosable bag suitable for use in sterilizing or cleaning articles.
  • This high-temperature vented reclosable bag may be used for sterilization or cleaning of: (1) consumer products, including household items (e.g. breast milk pumping parts for nursing mothers), or (2) industrial products, including medical instruments used on hospital, dental, and military applications.
  • the bag shown in FIG. 1 comprises a receptacle 2 made of flexible material, such as polypropylene film, plastic lamination film, other higher-melting-temperature material, or a combination of two or more of the foregoing types of flexible material.
  • a front panel 6 and a rear panel (not shown in FIG. 1 ) made of flexible high-temperature material are joined together at the bottom and two sides by conduction heat sealing to form the receptacle 2 having an interior volume and a mouth in which a reclosable feature 4 is installed.
  • the bottom heat seal is indicated by reference numeral 14 in FIG. 1.
  • the side heat seals are respectively indicated by reference numerals 10 and 12.
  • the areas of overlap between the reclosable feature and the side heat seals 10 and 12 are indicated by reference numerals 16 and 18 respectively.
  • the areas 16 and 18 typically correspond to zones where the zipper strips are joined to each other and the closure profiles are flattened by thermal crushing or ultrasonically stomping in well-known manner.
  • Each of side heat seals 10 and 12 comprises two portions separated by a respective gap in the side heat seal.
  • the gap in the side heat seal 10 forms a vent 20 that allows communication between the interior and exterior of the receptacle 2.
  • the gap in the side heat seal 12 forms a vent 22 that allows communication between the interior and exterior of the receptacle 2.
  • the vents can be formed by providing gaps In the heated side sealing bars typically used to form side seals 10 and 12.
  • the broad scope of the invention encompasses the use of a single vent on one side only. It also encompasses the use of more than two vents.
  • the vents are placed above the water level inside the bag.
  • the receptacle may be provided with a line indicating the optimum level to which the receptacle should be filled with water.
  • vented reclosable bags suitable for use in the treatment methods disclosed herein may have various constructions.
  • the side seals may be formed by a hot knife, impulse sealing or conduction heat sealing.
  • the vents for pressure relief are located away from the bottom of the bag.
  • the vents can be formed by short slits or small perforations in the front and/or rear panel.
  • the bag can be formed from a single web of film that has been folded. In the completed bag, this fold will form the bottom of the bag, while the two side seals are formed by conduction heat sealing.
  • the bottom of the bag could be gusseted or stand-up gusseted.
  • FIG. 2 is a sectional drawing depicting the case wherein the bag has a fold at the bottom and the reclosable feature is a flexible zipper comprising a pair of plastic flanged zipper strips 24 and 26 having mutually interlockable male and female closure profiles respectively.
  • the male zipper strip 24 is heat sealed to the front panel 6 and the female zipper strip 26 is heat sealed to the rear panel 8, these heat seats 28 and 30 be indicated by x's.
  • the zipper strips may be flangeless.
  • the zipper could be operated by a slider mounted thereto.
  • the structures of various slider-operated plastic zippers are well known in the art and will not be described in detail herein.
  • the vents in the side seals are not shown in FIG. 2.
  • the term “article” includes, but is not limited to, an item, utensil, tool, instrument, device, appliance, or other household or industrial product.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)
  • Food Preservation Except Freezing, Refrigeration, And Drying (AREA)

Abstract

L'invention concerne une méthode de traitement d'un article, comprenant les étapes consistant à : placer un article à l'intérieur d'un sac refermable ayant au moins une ouverture, fermer le sac avec l'article à l'intérieur, puis chauffer le sac et son contenu à une température élevée. La méthode peut de plus comprendre une étape dans laquelle une quantité d'eau est placée à l'intérieur du sac refermable avant qu'il ne soit chauffé, auquel cas la haute température est égale ou supérieure à la température d'ébullition de l'eau. Durant l'étape de chauffage, la vapeur s'échappe du sac par l'ouverture.
PCT/US2007/017937 2006-08-14 2007-08-13 Méthode de traitement à haute température d'un article grâce à un emballage refermable ayant une ouverture WO2008021335A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US83755906P 2006-08-14 2006-08-14
US60/837,559 2006-08-14

Publications (2)

Publication Number Publication Date
WO2008021335A2 true WO2008021335A2 (fr) 2008-02-21
WO2008021335A3 WO2008021335A3 (fr) 2008-08-07

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/017937 WO2008021335A2 (fr) 2006-08-14 2007-08-13 Méthode de traitement à haute température d'un article grâce à un emballage refermable ayant une ouverture

Country Status (1)

Country Link
WO (1) WO2008021335A2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7681732B2 (en) 2008-01-11 2010-03-23 Cryovac, Inc. Laminated lidstock
JP2019137466A (ja) * 2018-02-14 2019-08-22 大日本印刷株式会社 袋
EP3770493B1 (fr) * 2013-09-09 2023-06-07 Savant Technologies LLC Sources de lumière perfectionnées à préférence chromatique

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030072674A1 (en) * 2001-10-16 2003-04-17 Richard Melker Microwaveable container for sterilizing objects

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3802205B2 (ja) * 1997-10-16 2006-07-26 大日本印刷株式会社 電子レンジ加熱用袋

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030072674A1 (en) * 2001-10-16 2003-04-17 Richard Melker Microwaveable container for sterilizing objects

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7681732B2 (en) 2008-01-11 2010-03-23 Cryovac, Inc. Laminated lidstock
EP3770493B1 (fr) * 2013-09-09 2023-06-07 Savant Technologies LLC Sources de lumière perfectionnées à préférence chromatique
JP2019137466A (ja) * 2018-02-14 2019-08-22 大日本印刷株式会社 袋

Also Published As

Publication number Publication date
WO2008021335A3 (fr) 2008-08-07

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