EP1928762B1 - A packaging having an improved reclosable opening - Google Patents

A packaging having an improved reclosable opening Download PDF

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Publication number
EP1928762B1
EP1928762B1 EP05799840A EP05799840A EP1928762B1 EP 1928762 B1 EP1928762 B1 EP 1928762B1 EP 05799840 A EP05799840 A EP 05799840A EP 05799840 A EP05799840 A EP 05799840A EP 1928762 B1 EP1928762 B1 EP 1928762B1
Authority
EP
European Patent Office
Prior art keywords
sealing
edge
packaging
reclosable opening
weakened
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.)
Not-in-force
Application number
EP05799840A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1928762A4 (en
EP1928762A1 (en
Inventor
Boon Eow Phee
Boon Chee Phee
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.)
Sin Sheng Kuang M Sdn Bhd
Original Assignee
Sin Sheng Kuang M Sdn Bhd
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 Sin Sheng Kuang M Sdn Bhd filed Critical Sin Sheng Kuang M Sdn Bhd
Publication of EP1928762A1 publication Critical patent/EP1928762A1/en
Publication of EP1928762A4 publication Critical patent/EP1928762A4/en
Application granted granted Critical
Publication of EP1928762B1 publication Critical patent/EP1928762B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B65D81/00—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
    • B65D81/34—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 the package
    • B65D81/3446—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 the package specially adapted to be heated by microwaves
    • B65D81/3461—Flexible containers, e.g. bags, pouches, envelopes
    • 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
    • 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
    • B65D33/2575—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 the slide fastener providing access to the bag through a bag wall, e.g. intended to be cut open by the consumer
    • B65D33/2583—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 the slide fastener providing access to the bag through a bag wall, e.g. intended to be cut open by the consumer the slide fastener being attached to one wall only
    • 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
    • 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
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/008—Standing pouches, i.e. "Standbeutel"

Definitions

  • This invention relates generally to the field of packaging and more particularly to a packaging with improved reclosable opening which is suitable for household usage, especially for use as packaging for foodstuff in microwave oven.
  • Frozen or shelf stable prepared foods that are intended to be reheated using microwave oven are becoming increasingly popular. Excess food or food being prepared in advance can be packaged and stored. Consumers only need to heat up those packaged food in the microwave oven prior to consuming.
  • the moisture content of the food is rapidly heated and transformed into steam.
  • the pressure within the packaging increases. Consumers usually puncture holes or cut a corner or pierce holes on the packaging to allow the steam to vent from the packaging during heating.
  • a packaging having a weakened sealing or a valve which allow the steam to vent during the process of heating would provide an improved method for heating food in microwave oven.
  • packaging with weakened sealing or valve which allow the steam to escape from the packaging are disclosed.
  • these packaging are only suitable for the food manufacturer as it is not practical for a household user to have a thermal sealing machine or a heat sealer to seal it after putting the foodstuff into the packaging.
  • JP-A 11178713 discloses a bag to be heated with microwave oven.
  • the bag has three sealing sides and an opening side that a zip-fastener is disposed on both side surface of the bag the opening side, while a flow passage is created at one if the three sealed sides for discharging gas.
  • US 2004/0069157 assigned to Lin discloses a microwaveable zipper bag with a plurality of pseudo-closed gaps for air permeation and a pair of male-female zipper profile on the film. When heating, the bag has the gaps open gradually to regulate the internal pressure and the gap is restored once the heating stopped.
  • the bag includes a body with a reclosable closure at the bag opening, where the closure comprises extruded male and female interlocking profiles extending along opposing sides of the opening and constructed to releasably interlock, an extruded valve flange extending from one side of the closure to engage an opposing surface of the closure when the profile are interlocked and the flange as well as the opposing surface is constructed to separate in response to pressure within the bag while interlocked.
  • WO 2004/067390 discloses a container to be heated by microwave.
  • the container has a seal and a venting configuration which includes a steam guide defining a central vent and a pair of steam horns associated with and positioned on either side of the steam guide. Together the steam guide and steam horns weaken a portion of the seal at a predetermined position.
  • the packaging is modified to cater for the need of household users, who do not have access to a thermal sealing device, by having a reclosable opening, a diverting means and weakened sealing on the packaging.
  • a reclosable opening functions as an opening for inserting the object, especially foodstuff into the packaging.
  • the packaging can be closed up by reclosable opening to store, without using heat sealing or other adhesive.
  • a diverting means is predisposed in such a manner and having a dimension sufficient to cover the reclosable opening.
  • the diverting means is joined with main packaging sheets at the upper portion to direct airflow away from the reclosable opening. When the increased internal air pressure builds up to a critical point, the weakened sealing ruptures to allow air to vent through.
  • the primary object of the invention is to provide a packaging with a reclosable opening, a diverting means and a weakened sealing which is suitable for the convenience of user who do not have a thermal sealing device, especially household user for use in microwave oven for reheating purpose.
  • the term "packaging" used throughout the specification includes all kind of pouches within the scope of the claims. It is to be understood that the use of the term is not limiting the scope of the claims to certain designs and/or embodiments of the packaging according to the invention.
  • the current invention relates to a packaging with improved reclosable opening includes a diverting means which is predisposed in such a manner and having a dimension sufficient to cover the reclosable opening, preferably a zipper, to direct airflow away from the zipper when there is an increase in internal air pressure and a weakened sealing.
  • a diverting means which is predisposed in such a manner and having a dimension sufficient to cover the reclosable opening, preferably a zipper, to direct airflow away from the zipper when there is an increase in internal air pressure and a weakened sealing.
  • the current invention can be used for heating food in a microwave oven.
  • the reclosable opening enable consumers to insert objects, especially foodstuff into the packaging.
  • the packaging can be closed up by using the reclosable opening without the need of heat sealer or other thermal sealing machine.
  • the weakened sealing on the other hand provides a method without the need of puncturing the packaging prior to heating in microwave oven.
  • a packaging includes an upper front packaging sheet, a lower front packaging sheet and a back packaging sheet which are sealed together to form an edge-to-edge sealing.
  • edge-to-edge sealing is used in this specification to refer to the all-round sealing along the marginal edge of a packaging sheet as it is folded to enclose an object.
  • One or more portion of the sealable edge may be made frangible or more specifically a weakened sealing, to vent increased internal pressure.
  • the weakened sealing can be created by:
  • the weakened sealing is created by disposing a film made of second material between front and back main packaging sheets.
  • the film includes all physical shapes, such as narrow tips, triangular or tapering shapes.
  • the material of the packaging sheet and film is selected from any one or in combination of polyethylene and its derivatives, polyester and its derivatives, polypropylene and its derivatives, nylon and its derivatives or any suitable polymer.
  • the upper front main packaging sheet, lower front main packaging sheet and back main packaging sheet are made of a first material, while the film, which creates a weakened sealing, is made of a second material.
  • Any one of main packaging sheet can be made of a third material, provided the sealing among the main packaging sheets are stronger than the weakened sealing.
  • the packaging includes any one of a flexible three-side sealed pouch, standing pouch and flexible six-side sealed pouch.
  • FIG. 1 shows the top view of a packaging of the current invention.
  • flexible three-side-sealed pouch (100) is one form of the preferred embodiment.
  • the flexible three-side-sealed pouch consists of a packaging body comprising an upper front main packaging sheet (102), a lower front main packaging sheet (201) and a back main packaging sheet (not shown) which are sealed together to form an edge-to edge sealing, reclosable opening (101) preferably zipper, a diverting means (103) and weakened sealing (104).
  • the zipper (101) is predisposed in such a manner to be covered by the diverting means (103).
  • Figure 1 also illustrates a diverting means (103), which is predisposed in such a manner and having a dimension sufficient to cover the reclosable opening (101) to direct airflow away from the reclosable opening (101) when there is an increase in internal air pressure.
  • a diverting means 103
  • FIG. 1 also illustrates a diverting means (103), which is predisposed in such a manner and having a dimension sufficient to cover the reclosable opening (101) to direct airflow away from the reclosable opening (101) when there is an increase in internal air pressure.
  • packaging will rupture at the weakened sealing (104) to allow the air to vent through.
  • the critical point is reached when the internal air pressure is greater than external air pressure to a sufficient extent to rupture the weakened sealing (104).
  • the diverting means (103) is an extended part from the upper front main packaging sheet (102).
  • the diverting means (103) can also be another film, which sealed between the upper front main packaging sheet (102) and back main packaging sheet form a flange or flap.
  • the front main packaging sheet (102) and its extended part, the diverting means (103) is made of a first material.
  • front main packaging sheet (102) and its extended part, the diverting means (103) may be made of a second material as shown in Figure 6.1 . The sealing between the front main packaging sheet (102) and the back main packaging sheet will thus become the weakened sealing (104) in Figure 6.1 .
  • a weakened sealing (104), created by disposing of a film made of a second material.
  • the film is disposed between two layers of the main packaging sheet, preferably on the top part of edge-to-edge sealing.
  • the sealing between the second material with any one of main packaging sheet is weaker than the sealing among the main packaging sheets.
  • the edge-to-edge sealing will be further discussed in Figure 8 .
  • the weakened sealing (104) can also be a seal with a width smaller than the sealing width of the rest of the edge-to-edge sealing as shown in Figure 2.
  • Figure 2 shows the top sealing area, the weakened sealing (104) with sealing width smaller than other sealing area, wherein the sealing bar used to create top sealing is having a width smaller than the sealing bar for other sealing areas.
  • the smaller sealing width is weaker compared to a sealing, which is sealed by the same means but with wider sealing.
  • Figure 2.1 illustrates the weakened sealing (104) which is a sealing with area smaller than the sealing area of the rest of edge-to-edge sealing. This designated sealing area can be created by indent of the sealing bar.
  • FIG. 3 Another embodiment of weakened sealing (104) is shown in Figure 3 .
  • a weakened sealing (104) is created by forming a notch on part of edge-to-edge sealing.
  • Figure 4 figuratively shows layers of the weakened sealing (104), which is created when a film (202) made of second material is disposed between the upper front main packaging sheet (102) and back main packaging sheet (203).
  • the weakened sealing (104) can be at any part of the edge-to-edge sealing. However, the weakened sealing is preferably at the top part of edge-to-edge sealing. Note that when the weakened sealing is at the side part of edge-to-edge sealing, the film (202) is disposed in between lower front main packaging sheet (201) and back main packaging sheet (203).
  • the main packaging sheets are made of first material. In another embodiment, any one of the main packaging can be made of a third material.
  • the reclosable opening (101) preferably a zipper which is made of a pair of male and female elements (301 and 302) which interlock to each other.
  • the zipper is openable and reclosable to allow user to insert the objects, especially foodstuffs.
  • the female element (301) is on the lower front main packaging sheet (201) while the male element (302) is on the upper layer of the front main packaging sheet (102) or vice versa.
  • Figure 6 shows the cross-section of the pouch at the center, illustrating the position of the diverting means (103) and zipper (301 and 302), which are predisposed in such a manner that the zipper (301 and 302) is covered by the diverting means (103).
  • the diverting means (103) direct airflow away from the zipper (301 and 302) when there is an increase in internal air pressure.
  • the packaging will rupture at the weakened sealing (104) to allow the air to vent through but the zipper (301 and 302) remain intact as it is covered by diverting means (103).
  • the critical point is reached when the internal air pressure is greater than external air pressure to a sufficient extent to rupture the weakened sealing (104).
  • the diverting means (103) is extended from upper front main packaging sheet (102).
  • a film made of second material (202) is sandwiched between upper front main packaging sheet (102) and back main packaging sheet (203).
  • the sealing of the second material with the main packaging sheet is the weakened sealing (104).
  • Figure 6.1 shows another embodiment of present invention, wherein upper front main packaging sheet (102) and its extended part, the diverting means (103) is made of a second material. Part of the front main packaging sheet (102) detaches from the rest of the packaging when an increase in internal air pressure has build up to a critical point as the sealing between the second material and the main packaging sheet is the weakened sealing (104).
  • FIG 7 there is shown in Figure 7 the cross-section of the pouch at the sealed edge.
  • a film (202) is sandwiched between upper front main packaging sheet (102) and back main packaging sheet (203) to create a weakened sealing.
  • the film (202) is made of second material.
  • the extended part of upper front main packaging sheet (102) is diverting means (103).
  • the weakened sealing can be at any part of edge-to-edge sealing in which the film (202) can also be disposed between lower front main packaging sheet (201) and back main packaging sheet (203).
  • the upper front main packaging sheet (102) and its extended part, the diverting means (103) can be made of a second material as illustrated in Figure 6.1 .
  • the cross-section of the pouch at the sealed edge is shown in Figure 7.1 .
  • the sealing between upper front main packaging sheet (102), which is made of a second material, and back main packaging sheet (203) is weaker than the rest of edge-to-edge sealing.
  • FIG 8 shows the perspective view for different layers of packaging sheets of the current invention according to the preferred embodiment.
  • the extension of upper front main packaging sheet (102) forms the diverting means (103) wherein the diverting means has a dimension sufficient to covers the reclosable opening, or more particularly zipper (301 and 302), to direct airflow away from the zipper (301 and 302) when there is an increase in internal air pressure.
  • the zipper (301 and 302) is openable and reclosable.
  • the zipper is an opening for users to insert object into the packaging.
  • a film made of second material is disposed between upper front main packaging sheet (102) and back main packaging sheet (203).
  • the edge-to-edge sealing of the film (202) with upper front main packaging sheet (102) and back main packaging sheet (203) forms a weakened sealing.
  • the edges the packaging are sealed to produce the edge-to-edge sealing at the area pointed with arrows.
  • the packaging is not only limited to three-side-sealed flexible pouch.
  • Other forms of packaging can also be used with the current invention such as standing pouch (400) as illustrated in Figure 9 and flexible six-side sealed pouch (500) as illustrated in Figure 10 .
  • Standing pouch (400) is formed by inserting a layer of packaging sheet (401) at the bottom of the pouch between lower front main packaging sheet (201) and back main packaging sheet (203).
  • the layer of packaging sheet (401) is preferably made of first material.
  • the weakened sealing (104) is created at the top part of edge-to-edge sealing by using any one of the four methods described above.
  • Figure 10 shows a flexible six-side sealed pouch (500).
  • a layer of first packaging sheet (501) is inserted at the bottom of the pouch between lower front main packaging sheet (201) and back main packaging sheet (203).
  • a second of packaging sheet (502) is inserted at the top between upper front main packaging sheet (102) and back main packaging sheet (203).
  • the first packaging sheet (501) and the second packaging sheet (502) are preferably made of first material.
  • the weakened sealing (104) is created at the top part of edge-to-edge sealing. The weakened sealing can be created by any one of the four methods described above.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Food Science & Technology (AREA)
  • Bag Frames (AREA)
  • Packages (AREA)
  • Wrappers (AREA)
EP05799840A 2005-08-26 2005-11-09 A packaging having an improved reclosable opening Not-in-force EP1928762B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
MYPI20054012A MY146865A (en) 2005-08-26 2005-08-26 A packaging with improved reclosable opening
PCT/SG2005/000381 WO2007024196A1 (en) 2005-08-26 2005-11-09 A packaging with improved reclosable opening

Publications (3)

Publication Number Publication Date
EP1928762A1 EP1928762A1 (en) 2008-06-11
EP1928762A4 EP1928762A4 (en) 2008-12-10
EP1928762B1 true EP1928762B1 (en) 2010-06-02

Family

ID=37771866

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05799840A Not-in-force EP1928762B1 (en) 2005-08-26 2005-11-09 A packaging having an improved reclosable opening

Country Status (11)

Country Link
US (1) US20080247686A1 (zh)
EP (1) EP1928762B1 (zh)
JP (1) JP4850249B2 (zh)
CN (1) CN101267994B (zh)
AT (1) ATE469844T1 (zh)
AU (1) AU2005335723B2 (zh)
CA (1) CA2620677A1 (zh)
DE (1) DE602005021708D1 (zh)
MY (1) MY146865A (zh)
RU (1) RU2371367C1 (zh)
WO (1) WO2007024196A1 (zh)

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US20100129503A1 (en) * 2007-04-18 2010-05-27 Robert Chadwick Flaherty Packages for steam venting, and methods
DE202007007245U1 (de) 2007-05-21 2007-08-02 Takata-Petri Ag Unter Vakuum in Folie verpackter Airbag
US8231024B2 (en) 2007-08-08 2012-07-31 Clear Lam Packaging, Inc. Flexible, stackable container and method and system for manufacturing same
JP2009166853A (ja) * 2008-01-11 2009-07-30 Aohata Corp 包装袋
WO2009146324A1 (en) * 2008-05-28 2009-12-03 Illinois Tool Works Inc. Flexible bag with vent for pressure release
DE102008030184A1 (de) * 2008-06-26 2009-12-31 Takata-Petri Ag Gassackmodul für ein Fahrzeuginsassen-Rückhaltesystem und Verfahren zum Herstellen eines Gassackmoduls
IT1393879B1 (it) * 2009-04-29 2012-05-11 Masterpack S P A Valvola di rilascio gas-vapori da confezioni in sacchetti flessibili termosaldati
EP2911947B1 (en) 2012-10-26 2018-03-14 Primapak, LLC Flexible package and method of making the same
US10207850B2 (en) 2012-10-26 2019-02-19 Primapak, Llc. Flexible package and method of making same
USD719035S1 (en) * 2013-06-13 2014-12-09 Dow Global Technologies Llc Produce handbag
JP6114344B2 (ja) * 2015-08-05 2017-04-12 株式会社サンエー化研 注出口及びジッパー付き容器

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Also Published As

Publication number Publication date
CN101267994B (zh) 2010-06-16
US20080247686A1 (en) 2008-10-09
AU2005335723B2 (en) 2010-12-23
MY146865A (en) 2012-09-28
JP2009505913A (ja) 2009-02-12
AU2005335723A1 (en) 2007-03-01
ATE469844T1 (de) 2010-06-15
CN101267994A (zh) 2008-09-17
WO2007024196A1 (en) 2007-03-01
DE602005021708D1 (de) 2010-07-15
CA2620677A1 (en) 2007-03-01
JP4850249B2 (ja) 2012-01-11
EP1928762A4 (en) 2008-12-10
EP1928762A1 (en) 2008-06-11
RU2371367C1 (ru) 2009-10-27

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