EP3152125A1 - Resealable flow-wrap pack for wet wipes - Google Patents

Resealable flow-wrap pack for wet wipes

Info

Publication number
EP3152125A1
EP3152125A1 EP15726866.5A EP15726866A EP3152125A1 EP 3152125 A1 EP3152125 A1 EP 3152125A1 EP 15726866 A EP15726866 A EP 15726866A EP 3152125 A1 EP3152125 A1 EP 3152125A1
Authority
EP
European Patent Office
Prior art keywords
flow
wrap pack
wrap
pack according
film
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.)
Granted
Application number
EP15726866.5A
Other languages
German (de)
French (fr)
Other versions
EP3152125B1 (en
Inventor
James Davenport
Keith GATER
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.)
Amcor Flexibles UK Ltd
Original Assignee
Amcor Flexibles UK Ltd
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 Amcor Flexibles UK Ltd filed Critical Amcor Flexibles UK Ltd
Publication of EP3152125A1 publication Critical patent/EP3152125A1/en
Application granted granted Critical
Publication of EP3152125B1 publication Critical patent/EP3152125B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47K—SANITARY EQUIPMENT; ACCESSORIES THEREFOR, e.g. TOILET ACCESSORIES
    • A47K10/00—Body-drying implements; Toilet paper; Holders therefor
    • A47K10/24—Towel dispensers; Toilet paper dispensers
    • A47K10/32—Dispensers for paper towels or toilet paper
    • A47K10/42—Dispensers for paper towels or toilet paper dispensing from a store of single sheets, e.g. stacked
    • 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
    • B65D75/04—Articles or materials wholly enclosed in single sheets or wrapper blanks
    • B65D75/06—Articles or materials wholly enclosed in single sheets or wrapper blanks in sheets or blanks initially folded to form tubes
    • B65D75/12—Articles or materials wholly enclosed in single sheets or wrapper blanks in sheets or blanks initially folded to form tubes with the ends of the tube closed by flattening and heat-sealing
    • 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
    • B65D75/04—Articles or materials wholly enclosed in single sheets or wrapper blanks
    • B65D75/20—Articles or materials wholly enclosed in single sheets or wrapper blanks in sheets or blanks doubled around contents and having their opposed free margins united, e.g. by pressure-sensitive adhesive, crimping, heat-sealing, or welding
    • B65D75/22—Articles or materials wholly enclosed in single sheets or wrapper blanks in sheets or blanks doubled around contents and having their opposed free margins united, e.g. by pressure-sensitive adhesive, crimping, heat-sealing, or welding the sheet or blank being recessed to accommodate contents
    • 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
    • B65D75/26—Articles or materials wholly enclosed in laminated sheets or wrapper blanks
    • 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
    • B65D75/52—Details
    • B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
    • B65D75/5827—Tear-lines provided in a wall portion
    • B65D75/5833—Tear-lines provided in a wall portion for tearing out a portion of the wall
    • B65D75/5838—Tear-lines provided in a wall portion for tearing out a portion of the wall combined with separate fixed tearing means, e.g. tabs
    • 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
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/08—Containers or packages with special means for dispensing contents for dispensing thin flat articles in succession
    • B65D83/0805—Containers or packages with special means for dispensing contents for dispensing thin flat articles in succession through an aperture in a wall
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47K—SANITARY EQUIPMENT; ACCESSORIES THEREFOR, e.g. TOILET ACCESSORIES
    • A47K10/00—Body-drying implements; Toilet paper; Holders therefor
    • A47K10/24—Towel dispensers; Toilet paper dispensers
    • A47K10/32—Dispensers for paper towels or toilet paper
    • A47K2010/3266—Wet wipes
    • 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
    • B65D2575/00—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
    • B65D2575/52—Details
    • B65D2575/58—Opening or contents-removing devices added or incorporated during package manufacture
    • B65D2575/586—Opening or contents-removing devices added or incorporated during package manufacture with means for reclosing

Definitions

  • the present invention relates to a flow-wrap pack for wet wipes.
  • Flow wrap packs are widely used for packaging various products, e.g. chocolate, biscuits, cakes, but also for household, hygiene or technical products.
  • a typical household product is wet wipes which are small moistened pieces of paper or cloth.
  • Wet wipes are typically used for household cleaning or for personal hygiene.
  • Flow-wrap packs comprise a film, e.g. a monolayer film or a multilayer film in the form of a laminate.
  • the structure of the laminate depends on the properties desired with respect to the packaged product, e.g. in terms of a barrier effect against oxygen, moisture or light.
  • Films used for flow-wrap packaging are usually produced and delivered to the packer in form of webs. In the course of the packaging the film is unrolled and wrapped around the product. In case a single item of a product is flow-wrap packed, the item is simply unwrapped when used. However, in cases where multiple items of a product, e.g. wet wipes, are flow-wrap packed, some kind of removal system is necessary.
  • the removal system must allow the removal of a single item, and the reclosing of the flow-wrap pack to protect the remaining items, in the case of wet wipes against drying out. It is known to achieve such a removal system by introducing a cut in the flow-wrap pack that is torn open when an item is to be removed and the application of a label that allows reclosing the pack after the item has been removed. This is usually done by die cut operation and the application of a label, both steps have to be done by the packer in the course of the flow-wrap packaging. For the user such removal systems are quite awkward to deal with.
  • the object of the present invention is to provide a flow-wrap pack having a simple removal system that may be operated with a single hand and rendering the die cut operation and the label application unnecessary.
  • the object is achieved by a flow-wrap pack according to claim 1. Further preferred embodiments are subject to dependent claims.
  • a flow-wrap pack according to the present invention has a film.
  • Said film defines a front wall and a back wall, a longitudinal sealed seam in the form of a fin seal and two transverse sealed seams, thereby defining a product space.
  • the fin seal has an extended length and lies essentially flat against the back wall of the wrap pack.
  • the longitudinal sealed seam covers a scored tear line and a resealable strip.
  • the resealable strip extends between the two transverse sealed seams and is arranged on the film at an essentially right angle to the transverse sealed seams.
  • the film of the wrap pack is folded or wrapped around the product in question in a way that the side edges of the film mate on the back side of the pack and are sealed in order to form the longitudinal seal.
  • the flow-wrap pack is closed by the two transverse sealed seams.
  • the side of the film which is sealed is the side facing the product space.
  • the fin seal there are two possibilities, either the film is folded in a way that the edges on the side of the film facing the product space mate and are sealed against each other or the film is folded back on its edges in a way that the outer side of the film, i.e. the side facing the outside of the package, mate and are sealed against each other.
  • fin seals have a length of approximately 10 to 20 mm in order to provide a secure sealed seam without wasting material. It has been found that the fin seal may be extended in its length thereby providing a protective flap for the tear line which in turn provides an opening for the removal of single items once it is pushed through.
  • the extended fin seal on the back wall of the flow-wrap pack lying essentially flat against the back wall, protects the tear line and also covers the resealable strip.
  • the extended fin seal is unfolded uncovering the tear line which is pushed through to reveal the first item. This allows a convenient opening and closing of the flow-wrap pack with a single hand.
  • the resealable strip comprises means allowing the reclosing of the flow wrap pack.
  • Said means may be a Velcro ® , a fracture hot melt, a pressure sensitive adhesive or glue dots.
  • the resealable strip may optionally been covered by a peelable tape.
  • the peelable tape renders the resealable strip inactive.
  • the resealable strip is arranged at some distance to the tear line.
  • the extended fin seal When folded back to the back wall, it securely adheres to the resealable strip greatly reducing the risk that moisture leaking through the open tear line hampers the adhesive strength of the resealable strip.
  • the length of the fin seal with respect to the total width of the flow-wrap pack is in the range of 25% to 100%, preferably in the range of 40% to 60%, most preferably approximately 50%.
  • the minimum length of an extended fin seal should be 40mm.
  • the fin seal is not necessarily arranged in the middle of the back wall of the flow-wrap pack. It may also be offset allowing the tear line to be arranged in the middle of the back wall of the pack.
  • a print layer arranged on at least a part of the front wall of the flow-wrap pack.
  • the print layer may optionally be covered by a protective layer. Since the opening for the removal of an item of the packed product is arranged on the back wall of the flow wrap pack the print layer is advantageously a continuous print layer. Further, there is no need for a printed adhesive label matching the colours of the pack graphics. Flow wrap packs in the state of the art having a printed adhesive label covering the die cut opening often have the problem that the print is compromised due to colours and graphics that do not match since the print process for the pack graphics and the adhesive label are different.
  • the tear line extends between the two transverse sealed seams at an essentially right angle.
  • the tear line may have different configurations. It may be a straight line, be an S-shaped line or an arched line (horseshoe). The S-shaped line is preferred and the arched line is more preferred.
  • the length of the tear line regarding a straight line is preferably in the range of 40% to 60% of the total length of the flow wrap pack. If the tear line is curved the length of the tear line is related to its extension between the two side edges of the flow wrap pack.
  • the resealable strip is covered by peelable tape. The peelable tape is peeled off when the first item is removed from the pack. When the peelable tape is removed a resealable strip is exposed which allows the protective flap, i.e. the fin seal, to be resealed until further items are to be removed.
  • the resealable strip comprises a pressure sensitive adhesive.
  • Further types of adhesives that may be used are fracture hotmelt, cold seal lacquers, heat seal lacquers and glue dots. Pressure sensitive adhesives are preferred.
  • An alternative fastening system is a hook and eye closure.
  • the closing mean is selected from the group consisting of pressure sensitive adhesives, fracture hotmelt, cold seal lacquers, heat seal lacquers and glue dots.
  • the film is a monolayer film or a multilayer film comprising polyolefin, polyester, polypropylene, polyethylene, polyamide, metalized plastics or silicon oxide (SiOx, whereby 1.3 ⁇ x ⁇ 1.9).
  • Ethylene-vinylalcohol copolymer (EVOH) is a further polymer that can be used.
  • the following examples are possible film structures having a multiple layers:
  • oPP oriented polypropylene
  • oPET oriented polyethylene terephtalate
  • PE polyethylene
  • cPP cast polypropylene
  • Preferred film structures are:
  • the film structure oPP/PE is most preferred.
  • the above mentioned polymers may also be coextruded to form a monoweb comprising different resin layers.
  • the tear line is introduced by laser scoring.
  • Laser scoring is a techniques that allows to achieve scores in a variety of flexible packaging materials. Laser scoring delivers a controlled score depth for easy open packaging while the film's barrier properties are maintained. Laser scoring is a non-contact technology creating precise scores having a well defined depth for easy open packaging features that consistently tear along the designated score lines. Laser score lines can be precisely registered to other features on the flow-wrap packs, e.g. a print, seamed seals etc. Further, score lines of almost any shape can be achieved. Materials that are suited for laser scoring are polyolefins, polyester, polyethylene, polypropylene, polyamides (nylon), and metalized films. Multilayer films are also well suited for laser scoring.
  • Mechanical scoring may also be employed. However, laser scoring is preferred.
  • a method for the production of the flow wrap pack is as follows: In a first step the different layers of the film are printed and subsequently laminated. The resealable strip and the tear line are arranged on the film. The tear line is preferably achieved by laser scoring. It may also be done by mechanical scoring. Then the film is slit to size into reels which are delivered to the packer of the flow wrapped product. The packer produces the final flow wrap pack employing the film in flow wrap pack machines.
  • Fig. 1 shows a flow-wrap pack from the prior art
  • Fig. 2 shows a flow-wrap pack according to the present invention
  • Fig. 3A shows a first embodiment of the flow-wrap pack
  • Fig. 3B shows a second embodiment of the flow-wrap pack shows a third embodiment of the flow-wrap pack.
  • Fig. 4A shows a cross-sectional view of a further embodiment of the flow wrap pack;
  • Fig. 4B shows a cross-sectional view of a further embodiment of the flow wrap pack.
  • Fig. 1 shows a flow-wrap pack from the prior art.
  • the flow-wrap pack 1 has film 3. Further, the back wall 7 and the longitudinal sealed seam 9 as well as the two transverse sealed seams 11 are shown.
  • the longitudinal sealed seam is designed as usual. It is just long enough to provide for a secure sealing of the pack.
  • Fig. 2 shows a flow-wrap pack 1 according to the present invention.
  • the flow- wrap pack 1 is shown from its back side.
  • the pack 1 has a film 3 that defines the front wall and the back wall 7.
  • the extended longitudinal sealed seam 9 in the form of a fin seal which closes the flow-wrap pack on its back side lies essentially flat to the back wall 7.
  • the two transverse sealed seams 11 close the flow-wrap pack 1 on its upper and lower end thereby defining a product space.
  • Fig. 3A shows the flow-wrap pack of Fig. 2 whereby the longitudinal sealed seam 9 in the form of a fin seal has been lifted in an upright position.
  • the dashed line 17 indicates the position of the extended edge of the fin seal when it lies essentially flat against the back wall. Since the longitudinal sealed seam is removed from its flat in an upright position the tear line 13 and the resealable strip 15 can be seen. In this embodiment the tear line 13 has an arched shape (also termed horseshoe).
  • the resealable strip 17 may covered by further a peelable tape (not shown) that is peeled off when the first item is removed from the pack in order to allow a reclosing of the flow-wrap pack 1 when the longitudinal sealed seam is folded over against the back wall 7 of the flow-wrap pack .
  • Fig. 3B shows a further configuration of the tear line 13. In this embodiment the tear line 13 has the shape of a straight line.
  • Fig. 3C shows a third embodiment of the flow-wrap pack 1 wherein the tear line 13 has an S-shape.
  • Fig 4A and 4B show a cross-sectional view of a further embodiment of the flow wrap pack.
  • the embodiments show different possibilities of the fin seal (9) on the back of the flow wrap pack.
  • Fig. 4A shows an embodiment where the inner side of the film (3) is sealed against each other.
  • Fig. 4B shows an embodiment where a part of the film (3) is folded back in order to mate the outside of the film (3) which is sealed against each other.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Packages (AREA)
  • Wrappers (AREA)

Abstract

The present invention relates to a flow-wrap pack (1) for wet wipes. The flow-wrap pack (1) has a film (3) defining a front wall (5) and a back wall (7), a longitudinal sealed seam in the form of a fin seal (9) and two transverse sealed seams (11) defining a product space. The fin seal (9) has an extended length and lies essentially flat against the back wall (7) of the wrap pack, thereby covering a scored tear line (13) and a resealable strip (15), said strip (15) extending between the transverse sealed seams (11) at an essentially right angle to the transverse sealed seams (11).

Description

Resealable flow-wrap pack for wet wipes
The present invention relates to a flow-wrap pack for wet wipes. Flow wrap packs are widely used for packaging various products, e.g. chocolate, biscuits, cakes, but also for household, hygiene or technical products. A typical household product is wet wipes which are small moistened pieces of paper or cloth. Wet wipes are typically used for household cleaning or for personal hygiene.
Flow-wrap packs comprise a film, e.g. a monolayer film or a multilayer film in the form of a laminate. The structure of the laminate depends on the properties desired with respect to the packaged product, e.g. in terms of a barrier effect against oxygen, moisture or light. Films used for flow-wrap packaging are usually produced and delivered to the packer in form of webs. In the course of the packaging the film is unrolled and wrapped around the product. In case a single item of a product is flow-wrap packed, the item is simply unwrapped when used. However, in cases where multiple items of a product, e.g. wet wipes, are flow-wrap packed, some kind of removal system is necessary. The removal system must allow the removal of a single item, and the reclosing of the flow-wrap pack to protect the remaining items, in the case of wet wipes against drying out. It is known to achieve such a removal system by introducing a cut in the flow-wrap pack that is torn open when an item is to be removed and the application of a label that allows reclosing the pack after the item has been removed. This is usually done by die cut operation and the application of a label, both steps have to be done by the packer in the course of the flow-wrap packaging. For the user such removal systems are quite awkward to deal with.
The object of the present invention is to provide a flow-wrap pack having a simple removal system that may be operated with a single hand and rendering the die cut operation and the label application unnecessary. The object is achieved by a flow-wrap pack according to claim 1. Further preferred embodiments are subject to dependent claims.
A flow-wrap pack according to the present invention has a film. Said film defines a front wall and a back wall, a longitudinal sealed seam in the form of a fin seal and two transverse sealed seams, thereby defining a product space. The fin seal has an extended length and lies essentially flat against the back wall of the wrap pack. Thereby, the longitudinal sealed seam covers a scored tear line and a resealable strip. The resealable strip extends between the two transverse sealed seams and is arranged on the film at an essentially right angle to the transverse sealed seams.
The film of the wrap pack is folded or wrapped around the product in question in a way that the side edges of the film mate on the back side of the pack and are sealed in order to form the longitudinal seal. In the longitudinal direction the flow-wrap pack is closed by the two transverse sealed seams. Regarding the two transverse sealed seams the side of the film which is sealed is the side facing the product space. In the case of the fin seal there are two possibilities, either the film is folded in a way that the edges on the side of the film facing the product space mate and are sealed against each other or the film is folded back on its edges in a way that the outer side of the film, i.e. the side facing the outside of the package, mate and are sealed against each other.
Usually fin seals have a length of approximately 10 to 20 mm in order to provide a secure sealed seam without wasting material. It has been found that the fin seal may be extended in its length thereby providing a protective flap for the tear line which in turn provides an opening for the removal of single items once it is pushed through. The extended fin seal on the back wall of the flow-wrap pack, lying essentially flat against the back wall, protects the tear line and also covers the resealable strip. In order to remove a single item from the flow-wrap pack the extended fin seal is unfolded uncovering the tear line which is pushed through to reveal the first item. This allows a convenient opening and closing of the flow-wrap pack with a single hand. A label application by the packer allowing the reclosing of the flow-wrap pack is unnecessary, as well as the arrangement of a tear line by way of a die cut operation. The resealable strip comprises means allowing the reclosing of the flow wrap pack. Said means may be a Velcro®, a fracture hot melt, a pressure sensitive adhesive or glue dots.
The resealable strip may optionally been covered by a peelable tape. The peelable tape renders the resealable strip inactive. Once the flow wrap pack is opened and the tear line is broken to remove a first item of the packed product, the tape is peeled off the resealable strip, the adhesive surface of the resealable strip is uncovered and allows securely reclosing the flow wrap pack when the extended fin seal is folded back in its position lying flat against the back wall.
The resealable strip is arranged at some distance to the tear line. When the extended fin seal is folded back to the back wall, it securely adheres to the resealable strip greatly reducing the risk that moisture leaking through the open tear line hampers the adhesive strength of the resealable strip. A disadvantage commonly encountered in flow wrap packs in the state of the art when an adhesive label is directly placed on an open tear line of such packs.
In a preferred embodiment of the flow-wrap pack the length of the fin seal with respect to the total width of the flow-wrap pack is in the range of 25% to 100%, preferably in the range of 40% to 60%, most preferably approximately 50%. The minimum length of an extended fin seal should be 40mm. The fin seal is not necessarily arranged in the middle of the back wall of the flow-wrap pack. It may also be offset allowing the tear line to be arranged in the middle of the back wall of the pack.
In another embodiment there is a print layer arranged on at least a part of the front wall of the flow-wrap pack. The print layer may optionally be covered by a protective layer. Since the opening for the removal of an item of the packed product is arranged on the back wall of the flow wrap pack the print layer is advantageously a continuous print layer. Further, there is no need for a printed adhesive label matching the colours of the pack graphics. Flow wrap packs in the state of the art having a printed adhesive label covering the die cut opening often have the problem that the print is compromised due to colours and graphics that do not match since the print process for the pack graphics and the adhesive label are different.
In a further preferred embodiment the tear line extends between the two transverse sealed seams at an essentially right angle. The tear line may have different configurations. It may be a straight line, be an S-shaped line or an arched line (horseshoe). The S-shaped line is preferred and the arched line is more preferred. The length of the tear line regarding a straight line is preferably in the range of 40% to 60% of the total length of the flow wrap pack. If the tear line is curved the length of the tear line is related to its extension between the two side edges of the flow wrap pack. In another preferred embodiment the resealable strip is covered by peelable tape. The peelable tape is peeled off when the first item is removed from the pack. When the peelable tape is removed a resealable strip is exposed which allows the protective flap, i.e. the fin seal, to be resealed until further items are to be removed.
In a further preferred embodiment the resealable strip comprises a pressure sensitive adhesive. Further types of adhesives that may be used are fracture hotmelt, cold seal lacquers, heat seal lacquers and glue dots. Pressure sensitive adhesives are preferred. An alternative fastening system is a hook and eye closure. Preferably the closing mean is selected from the group consisting of pressure sensitive adhesives, fracture hotmelt, cold seal lacquers, heat seal lacquers and glue dots. In another preferred embodiment of the flow-wrap pack the film is a monolayer film or a multilayer film comprising polyolefin, polyester, polypropylene, polyethylene, polyamide, metalized plastics or silicon oxide (SiOx, whereby 1.3<x<1.9). Ethylene-vinylalcohol copolymer (EVOH) is a further polymer that can be used. The following examples are possible film structures having a multiple layers:
• oPET/PE
• oPP/oPET/PE
· oPET/oPP/PE
• oPET/oPET/PE
• oPET/oPET/cPP
The abbreviations mean the following oPP: oriented polypropylene, oPET: oriented polyethylene terephtalate, PE: polyethylene, cPP: cast polypropylene.
Preferred film structures are:
• oPP/PE
• oPP/cPP
• PET/PE
· PET/cPP
The film structure oPP/PE is most preferred.
The above mentioned polymers may also be coextruded to form a monoweb comprising different resin layers.
In another preferred embodiment the tear line is introduced by laser scoring.
Laser scoring is a techniques that allows to achieve scores in a variety of flexible packaging materials. Laser scoring delivers a controlled score depth for easy open packaging while the film's barrier properties are maintained. Laser scoring is a non-contact technology creating precise scores having a well defined depth for easy open packaging features that consistently tear along the designated score lines. Laser score lines can be precisely registered to other features on the flow-wrap packs, e.g. a print, seamed seals etc. Further, score lines of almost any shape can be achieved. Materials that are suited for laser scoring are polyolefins, polyester, polyethylene, polypropylene, polyamides (nylon), and metalized films. Multilayer films are also well suited for laser scoring.
Mechanical scoring may also be employed. However, laser scoring is preferred.
A method for the production of the flow wrap pack is as follows: In a first step the different layers of the film are printed and subsequently laminated. The resealable strip and the tear line are arranged on the film. The tear line is preferably achieved by laser scoring. It may also be done by mechanical scoring. Then the film is slit to size into reels which are delivered to the packer of the flow wrapped product. The packer produces the final flow wrap pack employing the film in flow wrap pack machines.
The resealable flow-wrap pack for wet wipes according to the present invention is explained in more detail below with reference to exemplary embodiments in the drawings, in which, purely schematically: Fig. 1 shows a flow-wrap pack from the prior art;
Fig. 2 shows a flow-wrap pack according to the present invention;
Fig. 3A shows a first embodiment of the flow-wrap pack;
Fig. 3B shows a second embodiment of the flow-wrap pack shows a third embodiment of the flow-wrap pack. Fig. 4A shows a cross-sectional view of a further embodiment of the flow wrap pack;
Fig. 4B shows a cross-sectional view of a further embodiment of the flow wrap pack.
Fig. 1 shows a flow-wrap pack from the prior art. The flow-wrap pack 1 has film 3. Further, the back wall 7 and the longitudinal sealed seam 9 as well as the two transverse sealed seams 11 are shown. The longitudinal sealed seam is designed as usual. It is just long enough to provide for a secure sealing of the pack.
Fig. 2 shows a flow-wrap pack 1 according to the present invention. The flow- wrap pack 1 is shown from its back side. Thus the front wall which may comprise a print cannot be seen. The pack 1 has a film 3 that defines the front wall and the back wall 7. The extended longitudinal sealed seam 9 in the form of a fin seal which closes the flow-wrap pack on its back side lies essentially flat to the back wall 7. The two transverse sealed seams 11 close the flow-wrap pack 1 on its upper and lower end thereby defining a product space.
Fig. 3A shows the flow-wrap pack of Fig. 2 whereby the longitudinal sealed seam 9 in the form of a fin seal has been lifted in an upright position. The dashed line 17 indicates the position of the extended edge of the fin seal when it lies essentially flat against the back wall. Since the longitudinal sealed seam is removed from its flat in an upright position the tear line 13 and the resealable strip 15 can be seen. In this embodiment the tear line 13 has an arched shape (also termed horseshoe). The resealable strip 17 may covered by further a peelable tape (not shown) that is peeled off when the first item is removed from the pack in order to allow a reclosing of the flow-wrap pack 1 when the longitudinal sealed seam is folded over against the back wall 7 of the flow-wrap pack . Fig. 3B shows a further configuration of the tear line 13. In this embodiment the tear line 13 has the shape of a straight line.
Fig. 3C shows a third embodiment of the flow-wrap pack 1 wherein the tear line 13 has an S-shape.
Fig 4A and 4B show a cross-sectional view of a further embodiment of the flow wrap pack. The embodiments show different possibilities of the fin seal (9) on the back of the flow wrap pack. Fig. 4A shows an embodiment where the inner side of the film (3) is sealed against each other. Fig. 4B shows an embodiment where a part of the film (3) is folded back in order to mate the outside of the film (3) which is sealed against each other.

Claims

Claims
Flow-wrap pack for wet wipes having a film (3) defining a front wall (5) and a back wall (7), a longitudinal sealed seam (9) in the form of a fin seal and two transverse sealed (11) seams defining a product space, whereby the fin seal (9) has an extended length and lies essentially flat against the back wall (7) of the wrap pack (1), thereby covering a scored tear line (13) and a resealable strip (15), the strip (15) extending between the transverse sealed seams (11) at an essentially right angle to the transverse sealed seams (11).
Flow-wrap pack according to claim 1 , whereby the length of the fin seal (9) is in the range of 25% to 100%, preferably in the range of 40% to 60%, most preferably approximately 50% of a total pack width.
Flow-wrap pack according to claim 1 , whereby a print layer is arranged on at least on a part of the front wall (5) and optionally a protective layer is arranged on top of the print layer.
Flow-wrap pack according to claim 1 , whereby the tear line (13) extends between the transverse sealed (11) seams at an essentially right angle to the transverse sealed seams (11).
Flow-wrap pack according to claim 1 , whereby the resealable strip (15) is covered by a peelable tape.
Flow-wrap pack according to claim 1 , whereby the tear line (13) is laser scored.
7. Flow-wrap pack according to claim 1 , whereby the tear line (13) is a straight line or an S-shaped line or an arched line.
8. Flow-wrap pack according to claim 1 , whereby the resealable strip (15) comprises an adhesives selected from the group consisting of fracture hotmelt, cold seal lacquers, heat seal lacquers, glues and pressure sensitive adhesive.
9. Flow-wrap pack according to claim 1 , whereby the resealable strip (15) comprises a hook and eye closure.
10. Flow-wrap pack according to claim 1 , whereby the film (3) is a monolayer film or a multilayer film comprising polyolefin , polyester, polypropylene, polyethylene, polyamide, ethylene-vinylalcohol copolymer, metalized plastics, or SiOx.
11. Flow-wrap pack according to claim 10, whereby the film comprises a layer of oPP and a layer of PE.
EP15726866.5A 2014-06-05 2015-06-04 Resealable flow-wrap pack for wet wipes Not-in-force EP3152125B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP14001957.1A EP2952451A1 (en) 2014-06-05 2014-06-05 Resealable flow-wrap pack for wet wipes
PCT/EP2015/001135 WO2015185217A1 (en) 2014-06-05 2015-06-04 Resealable flow-wrap pack for wet wipes

Publications (2)

Publication Number Publication Date
EP3152125A1 true EP3152125A1 (en) 2017-04-12
EP3152125B1 EP3152125B1 (en) 2020-09-23

Family

ID=50897333

Family Applications (2)

Application Number Title Priority Date Filing Date
EP14001957.1A Withdrawn EP2952451A1 (en) 2014-06-05 2014-06-05 Resealable flow-wrap pack for wet wipes
EP15726866.5A Not-in-force EP3152125B1 (en) 2014-06-05 2015-06-04 Resealable flow-wrap pack for wet wipes

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP14001957.1A Withdrawn EP2952451A1 (en) 2014-06-05 2014-06-05 Resealable flow-wrap pack for wet wipes

Country Status (6)

Country Link
US (1) US20170107037A1 (en)
EP (2) EP2952451A1 (en)
AU (1) AU2015271256C1 (en)
BR (1) BR112016024100B1 (en)
RU (1) RU2712376C2 (en)
WO (1) WO2015185217A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020070251A1 (en) * 2018-10-04 2020-04-09 Unilever Plc Frozen confection packaging
JP7227793B2 (en) * 2019-02-28 2023-02-22 大王製紙株式会社 sheet package
TR202015259A2 (en) * 2020-09-25 2020-10-21 Besel Basim Sanayi Ve Ticaret Anonim Sirketi PRODUCTION METHOD OF 100% RECYCLING METALLIZED BARRIER POLYOLEFIN FILM

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT413094B (en) * 1998-12-15 2005-11-15 Teich Ag REPEATABLE, MOISTURE-RESISTANT HOSE BAG
JP2004196303A (en) * 2002-12-16 2004-07-15 Meisei Sansho Kk Wet tissue package
US8225829B2 (en) * 2007-03-29 2012-07-24 Pursen, Llc Transferable purse organizer
US8350679B2 (en) * 2009-04-24 2013-01-08 The Procter & Gamble Company Consumer product kit having enhanced product presentation
JP5529579B2 (en) * 2010-02-19 2014-06-25 ユニ・チャーム株式会社 Wet tissue package and manufacturing method thereof
CN103517855B (en) * 2011-03-17 2016-03-16 洲际大品牌有限责任公司 The packaged in flexible film product of reclosable and manufacture method

Also Published As

Publication number Publication date
WO2015185217A1 (en) 2015-12-10
RU2712376C2 (en) 2020-01-28
EP2952451A1 (en) 2015-12-09
EP3152125B1 (en) 2020-09-23
RU2016151338A (en) 2018-07-09
US20170107037A1 (en) 2017-04-20
BR112016024100B1 (en) 2022-02-08
AU2015271256A1 (en) 2016-10-27
AU2015271256C1 (en) 2020-02-20
AU2015271256B2 (en) 2019-11-28
RU2016151338A3 (en) 2018-09-26
BR112016024100A2 (en) 2017-08-15

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