WO2000040465A1 - Method for producing a resealable pouch - Google Patents

Method for producing a resealable pouch Download PDF

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Publication number
WO2000040465A1
WO2000040465A1 PCT/GB2000/000020 GB0000020W WO0040465A1 WO 2000040465 A1 WO2000040465 A1 WO 2000040465A1 GB 0000020 W GB0000020 W GB 0000020W WO 0040465 A1 WO0040465 A1 WO 0040465A1
Authority
WO
WIPO (PCT)
Prior art keywords
sheet
pouch
fold portion
folded
mouth
Prior art date
Application number
PCT/GB2000/000020
Other languages
French (fr)
Inventor
Stephen John Holloway
Original Assignee
Imperial Tobacco Limited
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
Priority to JP2000592188A priority Critical patent/JP2002534293A/en
Application filed by Imperial Tobacco Limited filed Critical Imperial Tobacco Limited
Priority to EEP200100357A priority patent/EE200100357A/en
Priority to DE60000572T priority patent/DE60000572T2/en
Priority to DK00900072T priority patent/DK1144253T3/en
Priority to CA002358541A priority patent/CA2358541C/en
Priority to NZ512603A priority patent/NZ512603A/en
Priority to EA200100751A priority patent/EA003007B1/en
Priority to AU18838/00A priority patent/AU771156B2/en
Priority to HU0104893A priority patent/HU224878B1/en
Priority to EP00900072A priority patent/EP1144253B1/en
Priority to AT00900072T priority patent/ATE225733T1/en
Publication of WO2000040465A1 publication Critical patent/WO2000040465A1/en
Priority to HK02104981.1A priority patent/HK1043098A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/18—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for making package-opening or unpacking elements
    • B65B61/188—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for making package-opening or unpacking elements by applying or incorporating profile-strips, e.g. for reclosable bags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/74—Auxiliary operations
    • B31B70/81—Forming or attaching accessories, e.g. opening devices, closures or tear strings
    • B31B70/813—Applying closures
    • B31B70/8131—Making bags having interengaging closure elements
    • B31B70/8132—Applying the closure elements in the machine direction

Definitions

  • the present invention relates to a method for producing a resealable pouch such as that used for storing tobacco.
  • the invention further relates to a method for inserting a resealable fastener into a pouch during the forming process of a standard tobacco pouch from a continuous reel of material.
  • a pouch for tobacco is conventionally formed from a thermoplastic material, capable of being welded to itself using a combination of heat and pressure.
  • the continuous material, or web is folded on itself along the length of the web from one side towards the other side, the fold being approximately a third the way along the width of the web, thus forming a double thickness web with a fold at one side and an extension of single thickness material extending from the double thickness to the opposite side of the web.
  • the distance from the folded edge to the extremity of the double thickness will be approximately the same as the distance from the double thickness part of the web to the other edge.
  • the double thickness part of the folded web is then welded, at fixed intervals across the width of the web, forming a continuous length of folded material formed into individual pockets of equal size, by the welds.
  • the welds formed are of a reasonable thickness.
  • the continuous length of formed pockets are cut by a knife along the welds, forming individual pouches welded at each side, with an extended flap approximately equal in length to the depth of the pouch.
  • the individual pouches are filled with the product, tobacco, through the mouth of the pouch.
  • the extended flap of the pouch is folded below the mouth of the pouch, but over the pouch mouth, so as to form the flap around the pouch.
  • a second fold of the flap is made around the base of the pouch to form a completely wrapped pouch.
  • the object of the present invention is to provide a method of producing a resealable pouch by inserting a resealable fastener into the pouches during the forming process so as to enable enhanced moisture retention of the product, or perceived moisture retention by the user, and to enable a reduction in spillage of the product before and during the use of the pouch.
  • the present invention provides a method of producing resealable filled pouches comprising the steps of folding across part of its original width a length of thermoplastics sheet to produce a folded sheet having a fold portion running lengthways of the sheet having a folded edge which fold portion extends across part of the original width of the sheet and a non fold portion extending from the fold portion to the other edge of the sheet; in a direction at right angles to the folded edge and at regular intervals along the folded edge, welding the fold portion together to form individual pockets of equal size having welded wall edges along the length of the sheet; cutting the sheet, across the width of the sheet and along the line of the welds, to produce individual pouches each having a mouth, welded edges and an extended flap portion; filling each pouch, through its mouth, with desired contents and folding the extended flap over the mouth so as to form the flap around the pouch; characterised in that, at the time of forming the fold portion of the sheet, a resealable fastener is located on the sheet in a direction parallel to the edges
  • the fastener is supplied in the form of two interengaging closure strips, supplied in the engaged position.
  • Each strip is typically formed with a protrusion, designed to engage with the complimentary strip, and flanges extending from the sides of the protrusion.
  • the closure strips are introduced and fixed into position, whilst engaged, so as to ensure perfect alignment between the two complimentary strips to ensure resealability. Any misalignment between the two complimentary strips will act so as to prevent full re-closure of the fastener or render the resealing action unworkable by the user. It is also a requirement of the process to ensure the closure is in the unengaged position when the pouch reaches the filling position. Both these actions are achieved in the manner described below.
  • the pouch is formed in the manner described for a standard pouch, the resealable fastener, in its engaged position, being introduced into the forming process as the thermoplastic sheet is folded.
  • the fastener is guided into the folded sheet into the position at which it is to be secured, i.e., immediately below what will become the mouth of the pouch,and the flanges of the closure strips are then welded to the pouch material in the correct position.
  • Welding the fastener into the pouch while engaged ensures alignment is maintained between the complimentary strips. Care should be taken to ensure that the flanges from opposing complimentary closure strips do not become welded together.
  • the material and closure strips may be chilled, by a cooling mechanism, so as to prevent stretching or puckering of the material, which may occur due to retained heat.
  • the closure strips which up to this point in time are engaged together are disengaged, whilst maintaining the positioning of the complimentary strips relative to each other.
  • the opposing closure strips are welded together using a high-energy method of welding, such as ultra-sonic welding, at fixed points along their lengths which points coincide with the positions at which the side welds, to form the pouches, will be made.
  • These welds are generally of a similar width as the side welds and act to ensure proper location of the opposing closures by closing the closures at the point of the weld, and "crushing" the closure with the ultra-sonic weld, or similar high-energy weld.
  • an ultra-sonic weld or similar high-energy weld, ensures the opposing closures are securely welded together, such that the weld will not break under normal use of the pouch, and also acts to produce a thin weld, which does not adversely affect the visual impact of the pouch. It is important to note that, at this point, the closure, welded into mouth of the pouch, is in the unengaged position, and that the closure has to remain generally unengaged for the remainder of the forming and filling process. Also note that the ultra-sonic weld is designed to extend slightly beyond the width of the fastener for reasons that will become apparent.
  • welds are made from the weld at the closure to the fold in the web, in the same manner as for the standard side weld.
  • the side weld preferably does not extend to the same distance as the original weld, as the closure weld would cause adverse interference with side weld. Therefore, the side weld preferably welds from the fold in the web to immediately below the closure flanges, and acts to interfere with the extension of the closure weld below the flanges. This interference is important to ensure an airtight weld is maintained from the web fold to above the fastener.
  • the guide strip used preferably extends throughout the pouch forming process up to the point the side welds are made, thus aiding with positive location and tracking of the closure and material.
  • the continuous web of formed pouches, with the resealable fastener secured into the mouths of the pouches, is cut down the centre of the weld to form individual pouches sealed at each side, the resealable fastener remaining generally open. Any partial closing of the fastener that may have occurred can be eliminated by a blast of compressed air aimed at the mouth of the pouch.
  • the individual pouches are then filled, subsequent to all formation of the individual pouches, through the mouth of the pouch.
  • the preferred application of the invention is in the production of resealable pouches of tobacco, it is possible to fill the pouches with different products, such as food products.
  • the fastener After deposition of the product into the pouch, the fastener is closed by means of pressure exerted onto the fastener.
  • the pouch is preferably folded in a similar manner to that used in conventional pouch production; the first fold occurring between the filled pouch and the bottom of the fastener.
  • the fastener is positioned such that the fold occurs in the same place as it does in a conventional pouch and hence does not affect the capacity of the pouch.
  • a second fold of the flap around the base of the pouch can be made as in the conventional pouch.

Abstract

A method of producing resealable filled pouches comprises the steps of (i) folding across part of its original width a length of thermoplastics sheet to produce a folded sheet having a fold portion running lengthways of the sheet having a folded edge which fold portion extends across part of the original width of the sheet and a non fold portion extending from the fold portion to the other edge of the sheet; (ii) in a direction at right angles to the folded edge and at regular intervals along the folded edge, welding the fold portion together to form individual pockets of equal size having welded wall edges along the length of the sheet; (iii) cutting the sheet, across the width of the sheet and along the line of the welds, to produce individual pouches each having a mouth, welded edges and an extended flap portion, and (iv) filling each pouch, through its mouth, with desired contents and folding the extended flap over the mouth so as to form the flap around the pouch. At the time of forming the fold portion of the sheet, a resealable fastener is located on the sheet in a direction parallel to the edges of the sheet and in a position predetermined to be immediately below the mouths of the pouches wherein the resealable fastener comprises two interengaging closure strips in engaged position, each closure strip of which having a base portion. The base portions of each of the two interengaging closure strips are, while the strips are engaged with each other, welded to the facing surfaces of the sheet respectively in the fold portion, and after welding of the resealable fastener the closure strips are disengaged from each other, the closure strips being made to engage with each other after the filling of the pouch and before forming the extended flap over the pouch.

Description

METHOD FOR PRODUCING A RESEALABLE POUCH
The present invention relates to a method for producing a resealable pouch such as that used for storing tobacco. The invention further relates to a method for inserting a resealable fastener into a pouch during the forming process of a standard tobacco pouch from a continuous reel of material.
A pouch for tobacco is conventionally formed from a thermoplastic material, capable of being welded to itself using a combination of heat and pressure. Typically, the continuous material, or web, is folded on itself along the length of the web from one side towards the other side, the fold being approximately a third the way along the width of the web, thus forming a double thickness web with a fold at one side and an extension of single thickness material extending from the double thickness to the opposite side of the web.. Thus, the distance from the folded edge to the extremity of the double thickness will be approximately the same as the distance from the double thickness part of the web to the other edge. The double thickness part of the folded web is then welded, at fixed intervals across the width of the web, forming a continuous length of folded material formed into individual pockets of equal size, by the welds. The welds formed are of a reasonable thickness. The continuous length of formed pockets are cut by a knife along the welds, forming individual pouches welded at each side, with an extended flap approximately equal in length to the depth of the pouch. The individual pouches are filled with the product, tobacco, through the mouth of the pouch. The extended flap of the pouch is folded below the mouth of the pouch, but over the pouch mouth, so as to form the flap around the pouch. A second fold of the flap is made around the base of the pouch to form a completely wrapped pouch. This method of wrapping does not prevent loss of moisture from the contents, or spillage of the contents, before and during use. The object of the present invention is to provide a method of producing a resealable pouch by inserting a resealable fastener into the pouches during the forming process so as to enable enhanced moisture retention of the product, or perceived moisture retention by the user, and to enable a reduction in spillage of the product before and during the use of the pouch.
The present invention provides a method of producing resealable filled pouches comprising the steps of folding across part of its original width a length of thermoplastics sheet to produce a folded sheet having a fold portion running lengthways of the sheet having a folded edge which fold portion extends across part of the original width of the sheet and a non fold portion extending from the fold portion to the other edge of the sheet; in a direction at right angles to the folded edge and at regular intervals along the folded edge, welding the fold portion together to form individual pockets of equal size having welded wall edges along the length of the sheet; cutting the sheet, across the width of the sheet and along the line of the welds, to produce individual pouches each having a mouth, welded edges and an extended flap portion; filling each pouch, through its mouth, with desired contents and folding the extended flap over the mouth so as to form the flap around the pouch; characterised in that, at the time of forming the fold portion of the sheet, a resealable fastener is located on the sheet in a direction parallel to the edges of the sheet and in a position predetermined to be immediately below the mouths of the pouches wherein the resealable fastener comprises two interengaging closure strips in engaged position, each closure strip of which having a base portion, and in that the base portions of each of the two interengaging closure strips are, while the strips are engaged with each other, welded to the facing surfaces of the sheet respectively in the fold portion, and wherein after welding of the resealable fastener the closure strips are disengaged from each other, the closure strips being made to engage with each other after the filling of the pouch and before forming the extended flap over the pouch.
The fastener is supplied in the form of two interengaging closure strips, supplied in the engaged position. Each strip is typically formed with a protrusion, designed to engage with the complimentary strip, and flanges extending from the sides of the protrusion. It is a requirement that the closure strips are introduced and fixed into position, whilst engaged, so as to ensure perfect alignment between the two complimentary strips to ensure resealability. Any misalignment between the two complimentary strips will act so as to prevent full re-closure of the fastener or render the resealing action unworkable by the user. It is also a requirement of the process to ensure the closure is in the unengaged position when the pouch reaches the filling position. Both these actions are achieved in the manner described below.
The pouch is formed in the manner described for a standard pouch, the resealable fastener, in its engaged position, being introduced into the forming process as the thermoplastic sheet is folded. The fastener is guided into the folded sheet into the position at which it is to be secured, i.e., immediately below what will become the mouth of the pouch,and the flanges of the closure strips are then welded to the pouch material in the correct position. Welding the fastener into the pouch while engaged ensures alignment is maintained between the complimentary strips. Care should be taken to ensure that the flanges from opposing complimentary closure strips do not become welded together. Subsequent to the closures being welded to the pouch material the material and closure strips may be chilled, by a cooling mechanism, so as to prevent stretching or puckering of the material, which may occur due to retained heat.
Subsequent to the fasteners being welded, and chilled if required, to the pouch material the closure strips which up to this point in time are engaged together are disengaged, whilst maintaining the positioning of the complimentary strips relative to each other. The opposing closure strips are welded together using a high-energy method of welding, such as ultra-sonic welding, at fixed points along their lengths which points coincide with the positions at which the side welds, to form the pouches, will be made. These welds are generally of a similar width as the side welds and act to ensure proper location of the opposing closures by closing the closures at the point of the weld, and "crushing" the closure with the ultra-sonic weld, or similar high-energy weld. The use of an ultra-sonic weld, or similar high-energy weld, ensures the opposing closures are securely welded together, such that the weld will not break under normal use of the pouch, and also acts to produce a thin weld, which does not adversely affect the visual impact of the pouch. It is important to note that, at this point, the closure, welded into mouth of the pouch, is in the unengaged position, and that the closure has to remain generally unengaged for the remainder of the forming and filling process. Also note that the ultra-sonic weld is designed to extend slightly beyond the width of the fastener for reasons that will become apparent.
When the fastener has been welded in the position, relating to the width of the pouch, welds are made from the weld at the closure to the fold in the web, in the same manner as for the standard side weld. However, the side weld preferably does not extend to the same distance as the original weld, as the closure weld would cause adverse interference with side weld. Therefore, the side weld preferably welds from the fold in the web to immediately below the closure flanges, and acts to interfere with the extension of the closure weld below the flanges. This interference is important to ensure an airtight weld is maintained from the web fold to above the fastener. The guide strip used preferably extends throughout the pouch forming process up to the point the side welds are made, thus aiding with positive location and tracking of the closure and material. The continuous web of formed pouches, with the resealable fastener secured into the mouths of the pouches, is cut down the centre of the weld to form individual pouches sealed at each side, the resealable fastener remaining generally open. Any partial closing of the fastener that may have occurred can be eliminated by a blast of compressed air aimed at the mouth of the pouch. The individual pouches are then filled, subsequent to all formation of the individual pouches, through the mouth of the pouch. Although the preferred application of the invention is in the production of resealable pouches of tobacco, it is possible to fill the pouches with different products, such as food products.
The above description does not preclude the side weld and cutting action occurring simultaneously to produce a very thin side seal whilst still producing a thin weld through the closure.
After deposition of the product into the pouch, the fastener is closed by means of pressure exerted onto the fastener. The pouch is preferably folded in a similar manner to that used in conventional pouch production; the first fold occurring between the filled pouch and the bottom of the fastener. The fastener is positioned such that the fold occurs in the same place as it does in a conventional pouch and hence does not affect the capacity of the pouch. A second fold of the flap around the base of the pouch can be made as in the conventional pouch.

Claims

1 . A method of producing resealable filled pouches comprising the steps of folding across part of its original width a length of thermoplastics sheet to produce a folded sheet having a fold portion running lengthways of the sheet having a folded edge which fold portion extends across part of the original width of the sheet and a non fold portion extending from the fold portion to the other edge of the sheet; in a direction at right angles to the folded edge and at regular intervals along the folded edge, welding the fold portion together to form individual pockets of equal size having welded wall edges along the length of the sheet; cutting the sheet, across the width of the sheet and along the line of the welds, to produce individual pouches each having a mouth, welded edges and an extended flap portion; filling each pouch, through its mouth, with desired contents and folding the extended flap over the mouth so as to form the flap around the pouch; characterised in that, at the time of forming the fold portion of the sheet, a resealable fastener is located on the sheet in a direction parallel to the edges of the sheet and in a position predetermined to be immediately below the mouths of the pouches wherein the resealable fastener comprises two interengaging closure strips in engaged position, each closure strip of which having a base portion, and in that the base portions of each of the two interengaging closure strips are, while the strips are engaged with each other, welded to the facing surfaces of the sheet respectively in the fold portion, and wherein after welding of the resealable fastener the closure strips are disengaged from each other, the closure strips being made to engage with each other after the filling of the pouch and before forming the extended flap over the pouch.
2. A method according to claim 1 , wherein the thermoplastics sheet is a sheet of polyethylene.
3. A method according to either claim 1 or claim 2, wherein the sheet is a laminate of a thermoplastics material with one or more layers of similar or different thermoplastics material, a metalised or metal coated sheet material or a paper web.
4. A method according to any one of claims 1 to 3, wherein welding is carried out by ultra-sonic welding.
5. A method according to any one of claims 1 to 5, wherein the base of each of the closure strips is provided with one or more flanges.
6. A method according to claim 5, wherein the folded portion of the sheet is welded up to immediately below the flanges on the closure strip.
7. A method according to any one of claims 1 to 6, wherein the resealable fastener is cooled immediately following welding to the thermoplastic sheet.
8. A method according to any one of claims 1 to 7, wherein the extended flap of each individually formed pouch is folded over the pouch, after filling thereof, at a position between the filled pouch and the bottom of the fastener.
9. A method according to any one of claims 1 to 8, wherein the flap, after being folded over the mouth of the flap, is folded around the base of the pouch.
1 0. A method according to any on of claims 1 to 9, wherein the pouches are filled with tobacco.
1 1 . A method according to any one of claims 1 to 1 0, wherein the thermoplastics sheet is supplied from a continuous reel.
1 2. A method according to any one of claims 1 to 1 1 , wherein the thermoplastic sheet is folded such that the distance from the folded edge to the mouth of the pouch is equal to the distance from the mouth of the pouch to the edge of the extended flap.
PCT/GB2000/000020 1999-01-06 2000-01-06 Method for producing a resealable pouch WO2000040465A1 (en)

Priority Applications (12)

Application Number Priority Date Filing Date Title
NZ512603A NZ512603A (en) 1999-01-06 2000-01-06 Method for producing a resealable pouch
EEP200100357A EE200100357A (en) 1999-01-06 2000-01-06 Method of making reclosable filled bags
DE60000572T DE60000572T2 (en) 1999-01-06 2000-01-06 METHOD FOR PRODUCING RE-SEALABLE POCKETS
DK00900072T DK1144253T3 (en) 1999-01-06 2000-01-06 Process for making a resealable purse
CA002358541A CA2358541C (en) 1999-01-06 2000-01-06 Method for producing a resealable pouch
JP2000592188A JP2002534293A (en) 1999-01-06 2000-01-06 Method of making a resealable pouch
EA200100751A EA003007B1 (en) 1999-01-06 2000-01-06 Method for producing a resealable pouch
EP00900072A EP1144253B1 (en) 1999-01-06 2000-01-06 Method for producing a resealable pouch
HU0104893A HU224878B1 (en) 1999-01-06 2000-01-06 Method for producing resealable filled pouch
AU18838/00A AU771156B2 (en) 1999-01-06 2000-01-06 Method for producing a resealable pouch
AT00900072T ATE225733T1 (en) 1999-01-06 2000-01-06 METHOD FOR MAKING RESEALABLE BAGS
HK02104981.1A HK1043098A1 (en) 1999-01-06 2002-07-03 Method for producing a resealable paouch

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP99300091.8 1999-01-06
EP99300091 1999-01-06

Publications (1)

Publication Number Publication Date
WO2000040465A1 true WO2000040465A1 (en) 2000-07-13

Family

ID=8241176

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2000/000020 WO2000040465A1 (en) 1999-01-06 2000-01-06 Method for producing a resealable pouch

Country Status (19)

Country Link
EP (1) EP1144253B1 (en)
JP (1) JP2002534293A (en)
CN (1) CN1336888A (en)
AT (1) ATE225733T1 (en)
AU (1) AU771156B2 (en)
CA (1) CA2358541C (en)
CZ (1) CZ300194B6 (en)
DE (1) DE60000572T2 (en)
DK (1) DK1144253T3 (en)
EA (1) EA003007B1 (en)
EE (1) EE200100357A (en)
ES (1) ES2180507T3 (en)
HK (1) HK1043098A1 (en)
HU (1) HU224878B1 (en)
ID (1) ID30078A (en)
NZ (1) NZ512603A (en)
PT (1) PT1144253E (en)
WO (1) WO2000040465A1 (en)
ZA (1) ZA200105581B (en)

Cited By (4)

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Publication number Priority date Publication date Assignee Title
CZ300194B6 (en) * 1999-01-06 2009-03-11 Imperial Tobacco Limited Method of producing resealable pouch
CN102152497A (en) * 2010-11-30 2011-08-17 厦门亚太创新机器有限公司 Producing equipment for folding and punching plastic bag
US9833021B2 (en) 2014-10-02 2017-12-05 Digirettes, Inc. Disposable tank electronic cigarette, method of manufacture and method of use
US11089815B2 (en) 2016-12-02 2021-08-17 Swedish Match North Europe Ab Method and arrangement for portion-packing of an oral pouched snuff product

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US4205504A (en) * 1978-09-01 1980-06-03 Gregg Engineering Corp. Method and device for making envelopes from a continuous web and including the stuffing and sealing of those envelopes
WO1983004011A1 (en) * 1982-05-17 1983-11-24 Harold Forman Method and apparatus for continuous formation of reclosable article wrappers
EP0531701A1 (en) * 1991-08-08 1993-03-17 Kraft Foods, Inc. In-line application of closure to packaging film

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GB9711248D0 (en) * 1997-05-31 1997-07-23 Imp Tobacco Co Ltd Resealable pouch for tobaco
ATE225733T1 (en) * 1999-01-06 2002-10-15 Imp Tobacco Ltd METHOD FOR MAKING RESEALABLE BAGS
EP1048230A1 (en) * 1999-04-29 2000-11-02 Imperial Tobacco Limited Apparatus for making resealable pouches

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Publication number Priority date Publication date Assignee Title
US4205504A (en) * 1978-09-01 1980-06-03 Gregg Engineering Corp. Method and device for making envelopes from a continuous web and including the stuffing and sealing of those envelopes
WO1983004011A1 (en) * 1982-05-17 1983-11-24 Harold Forman Method and apparatus for continuous formation of reclosable article wrappers
EP0531701A1 (en) * 1991-08-08 1993-03-17 Kraft Foods, Inc. In-line application of closure to packaging film

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ300194B6 (en) * 1999-01-06 2009-03-11 Imperial Tobacco Limited Method of producing resealable pouch
CN102152497A (en) * 2010-11-30 2011-08-17 厦门亚太创新机器有限公司 Producing equipment for folding and punching plastic bag
US9833021B2 (en) 2014-10-02 2017-12-05 Digirettes, Inc. Disposable tank electronic cigarette, method of manufacture and method of use
USD805687S1 (en) 2014-10-02 2017-12-19 Digirettes, Inc. Vaping device tank
USD805686S1 (en) 2014-10-02 2017-12-19 Digirettes, Inc. Vaping device
US10278428B2 (en) 2014-10-02 2019-05-07 Digirettes, Inc. Disposable tank electronic cigarette, method of manufacture and method of use
US10299513B2 (en) 2014-10-02 2019-05-28 Digirettes, Inc. Disposable tank electronic cigarette, method of manufacture and method of use
USD857985S1 (en) 2014-10-02 2019-08-27 Digirettes, Inc. Vaping device
USD863676S1 (en) 2014-10-02 2019-10-15 Digirettes, Inc. Vaping device tank
US11089815B2 (en) 2016-12-02 2021-08-17 Swedish Match North Europe Ab Method and arrangement for portion-packing of an oral pouched snuff product

Also Published As

Publication number Publication date
DE60000572D1 (en) 2002-11-14
ES2180507T3 (en) 2003-02-16
AU771156B2 (en) 2004-03-18
JP2002534293A (en) 2002-10-15
HUP0104893A3 (en) 2002-11-28
DE60000572T2 (en) 2003-06-26
EE200100357A (en) 2002-10-15
DK1144253T3 (en) 2002-10-28
CN1336888A (en) 2002-02-20
ATE225733T1 (en) 2002-10-15
CZ300194B6 (en) 2009-03-11
ZA200105581B (en) 2002-06-21
CZ20012463A3 (en) 2002-01-16
HUP0104893A2 (en) 2002-04-29
AU1883800A (en) 2000-07-24
HU224878B1 (en) 2006-03-28
EP1144253A1 (en) 2001-10-17
CA2358541C (en) 2007-02-20
PT1144253E (en) 2003-02-28
HK1043098A1 (en) 2002-09-06
EA200100751A1 (en) 2001-12-24
EP1144253B1 (en) 2002-10-09
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ID30078A (en) 2001-11-01
NZ512603A (en) 2002-12-20

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