EP0911259A1 - Umhüllter Gegenstand, heissgeschrumpft und einfach zum Auspacken, ebenso wie das Verfahren und die Vorrichtung zum Umhüllen - Google Patents

Umhüllter Gegenstand, heissgeschrumpft und einfach zum Auspacken, ebenso wie das Verfahren und die Vorrichtung zum Umhüllen Download PDF

Info

Publication number
EP0911259A1
EP0911259A1 EP98402630A EP98402630A EP0911259A1 EP 0911259 A1 EP0911259 A1 EP 0911259A1 EP 98402630 A EP98402630 A EP 98402630A EP 98402630 A EP98402630 A EP 98402630A EP 0911259 A1 EP0911259 A1 EP 0911259A1
Authority
EP
European Patent Office
Prior art keywords
film
wrapped
wrapping
tab
fringe
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.)
Withdrawn
Application number
EP98402630A
Other languages
English (en)
French (fr)
Inventor
Mitsugu Noguchi
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.)
KYOWA DENKI KK
Original Assignee
KYOWA DENKI KK
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 KYOWA DENKI KK filed Critical KYOWA DENKI KK
Publication of EP0911259A1 publication Critical patent/EP0911259A1/de
Withdrawn legal-status Critical Current

Links

Images

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
    • 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
    • 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
    • B65B53/00—Shrinking wrappers, containers, or container covers during or after packaging
    • B65B53/02—Shrinking wrappers, containers, or container covers during or after packaging by heat
    • 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
    • B65B61/182—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 tear-strips or tear-tapes
    • 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
    • B65D75/002—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 in shrink films

Definitions

  • the present invention relates to heat shrink wrapped articles, which are easy to unwrap, entirely covered by the heat shrink of heat shrinkable wrapping film, and to a wrapping method and an apparatus thereof.
  • Heat shrink wrapped articles are wrapped articles in tight contact with wrapping film which is heat-shrunk by a heat shrink apparatus, after the steps of unwinding, in a two-fold state, the heat shrinkable wrapping film having been wound into a roll, placing an item consisting of arbitrary commodities to be wrapped between the two-fold wrapping film, and welding and melt-severing the open fringe of the wrapping film by a heat sealer to form a bag-like body including the item to be wrapped.
  • the above mentioned wrapped articles are widely used today because of the advantages such that commodity value can be enhanced by displaying the commodities beautifully and with clarity, or that commodities having complicated shapes can be easily wrapped by placing the wrapping process on an automated line.
  • a general concept of heat shrink wrapping is, as shown in Fig.6, such that wrapping film is firstly unwound by a wrapping film drive roller 4 from a roll 1 of two-fold wrapping film which is put on a pair of wrapping film placement rollers 2.
  • a separating board 3 is usually disposed between the wrapping film placement roller 2 and the wrapping film drive roller 4, and the two-fold wrapping film is separated by the separating board 3. Then, the separated wrapping film is sent out through a wrapping film feeding roller 7.
  • the wrapping film one end of which is opened by a former 9 and the item to be wrapped is put in between from the open end thereof, is sent to a heat welding apparatus 12 in which the film fringe and the film surface, overlapping at the open end, are welded and melt-severed by a heat sealer for L-shaped seals to form, together with the other fringe previously welded and melt-severed, a bag-like body.
  • the bag-like body is sent by a discharge conveyer 11 into a hot air tunnel 13, where the wrapping film is heat-shrunk to complete a wrapped article with the wrapping film in tight contact with the item to be wrapped.
  • air leakage through the perforation may deteriorate finishing quality of wrapping after the heat shrink, or wrapping film is vulnerable to tearing at the perforation when commodities are being handled for transportation, display or the like, which also brings about a problem that careful handling of wrapped commodities is required.
  • Another method for making it easier to unwrap a heat shrink wrapping has been proposed, the method comprising the steps of incising a portion of the wrapping film, pasting an adhesive label on the portion, and pulling off the label to unwrap the wrapping film.
  • the method brings about a problem of increased cost, because individual wrapped articles are required to have labels pasted on, thus increasing necessary wrapping materials and making the wrapping process more complicated.
  • the inventors of the present invention have proposed a method to make the unwrapping easier by forming a projecting tab for unwrapping by incising the fringe of the wrapping film in the welding and melt-severing process before the heat shrink process (see Japanese Patent Laid-Open Publication No. Hei 9-165015).
  • the method still bears a problem that the location at which the projecting tab is formed is limited to a corner of the end of the film fringe.
  • the easy-to-unwrap heat shrink wrapped article of the present invention is characterized by placing an arbitrary item to be wrapped between an upper and a lower fringes of heat shrinkable wrapping film, storing the above mentioned item to be wrapped in a bag-like body formed by welding and melt-severing the upper and the lower film fringes overlapping with each other, and covering the entire item to be wrapped by heat shrink of the bag-like body causing the wrapping film to be in tight contact with the item to be wrapped, wherein the above mentioned wrapped article has a pick-up tab for unwrapping formed so as to project from a welded fringe using a portion of the film fringe when forming the bag-like body by welding and melt-severing of the wrapping film, the above mentioned pick-up tab having a slit, at a base portion, to be a tearing point of the side film including the welded fringe, and the above mentioned slit of the pick-up tab being incised in a length running through a range of 5 to 50% of the width of the pick
  • a heat shrink wrapped article having an easy-to-unwrap pick-up tab according to the shape or size of the item to be wrapped at the side of the article, can be obtained because tearing of wrapping film from the holes or difficulty in tight wrapping, which may occur in the case with perforation, are solved, as well as the limitation with regard to the location of the slit at the film fringe.
  • the wrapping method of the easy-to-unwrap heat shrink wrapped article characterized by the present invention comprises the steps of placing an arbitrary item to be wrapped between an upper and a lower fringes of heat shrinkable wrapping film, storing the above mentioned item to be wrapped in a bag-like body formed by welding and melt-severing the upper and the lower film fringes overlapping with each other, and covering the entire item to be wrapped by heat shrink of the bag-like body causing the wrapping film to be in tight contact with the item to be wrapped, wherein a pick-up tab for unwrapping is formed in one piece so as to project from a welded fringe using a portion of the above mentioned film fringe when forming the above mentioned bag-like body, a slit being incised, simultaneously with the projection forming of the above mentioned pick-up tab, at a base portion to be a tearing point of the side film including the welded fringe, and welding and melt-severing of the upper and the lower film fringes overlapping with each other being performed by crimping the upper and the
  • the wrapping apparatus of the easy-to-unwrap heat shrink wrapped article characterized by the present invention comprises an arbitrary item to be wrapped placed between an upper and an lower fringes of heat shrinkable film, and a heat sealer, for L-shaped seals, for forming a bag-like body including the above mentioned item to be wrapped in a sealed state by welding and melt-severing at least two edges of the overlapping fringes of the wrapping film, wherein the heat sealer has, at an arbitrary position of a seal heater for welding and melt-severing the film fringe along the longitudinal direction of the wrapping film, a forming section to form, in one piece, a pick-up tab for unwrapping which is projecting from a welded fringe using a portion of the above mentioned film fringe when forming the above mentioned bag-like body by the heat sealer, the above mentioned forming section being formed by bending outward a part of the seal heater for welding and melt-severing the film fringe and having a projecting tab connected to one side of the bent edge of the seal heater for inc
  • Fig. 1 is a perspective view illustrating the concept of the wrapping apparatus according to an embodiment of the present invention.
  • Fig. 2 is a perspective view illustrating the concept of the wrapping apparatus according to another embodiment of the present invention.
  • Fig. 3 is a perspective view illustrating seal heater applicable to the wrapping apparatus of the present invention.
  • Fig. 4 is a perspective view of a heat sealer having the seal heater of Fig. 3 built in.
  • Fig. 5 is a diagram illustrating in sequence the process, according to the present invention, of heat shrink wrapping of the item to be wrapped.
  • Fig. 6 is a conceptional diagram of a general heat shrink wrapping method.
  • a welding and melt-severing apparatus shown in Fig.1 includes a heat sealer 100 for L-shaped seals.
  • the heat sealer 100 comprises an upper component member 101 and a lower component member 102, to either one or both of which a seal heater 103 made of nichrome wire, heat block, or ribbon wire is, as shown by the alternate dashed line in the figure, disposed in an L-shape to weld and melt-sever a wrapping film 110 along both its longitudinal and lateral directions simultaneously.
  • a portion of a seal heater 103a, disposed along the longitudinal direction of the wrapping film 110, is partially bent outward to be formed as a rectangular forming section 104, which is used, in turn, to form a pick-up tab 202 projecting from a welded fringe 201 at a side of a heat shrink wrapped article 200 described later (see Fig.5), by melt-severing the film fringe 110a, simultaneously with the forming of a bag-like body 203 by the heat sealer 100.
  • unit 105 shows a former for separating the film
  • unit 106 shows an item to be wrapped.
  • Fig.2 shows a welding and melt-severing apparatus having a heat sealer 100 composed by connecting, in a T-shape, two seal heaters 103 composed of conductive heating wires such as ribboned nichrome wires by spot welding.
  • the seal heater 103 disposed only under the upper component member 101, forms a bag-like body by welding and melt-severing the two-fold film 110 into an L-shape and, at the same time, melt-severs the film fringe 110a too.
  • Fig.3 shows a disposition of a projecting piece 112, connected to the seal heater 103, which incises, simultaneously with the forming of the pick-up tab, a slit 204 to be the tearing point of the welded fringe 201 of the above mentioned heat shrink wrapped article 200 shown in Fig.5 at one side of the inner bent of the above mentioned forming section 104, wherein mounting terminals 107 are disposed at individual edges of the seal heater 103.
  • Fig.4 shows a built-in state of the above mentioned seal heater 103, wherein the upper portion of the seal heater 103 is fastened by insertion into a long-sized heat-resistant insulator 114 disposed at the lower surface of a receiving board 113 under a holder 109, and attached under the holder with the above mentioned mounting terminals 107 of individual edges screwed into a receiving tab 117 at the internal edge of a supporting axis 116 passing through a supporting arm 115 of the edge of the receiving board 113.
  • the receiving tab 117 composed of a heat-resistant insulator in order to prevent current leakage or a short circuit, provides electrical insulation between the seal heater 103 and the supporting arm 115.
  • the seal heater 103 extends by thermal expansion when electricity is applied, the above mentioned supporting axis 116 is pressed outward by a coil spring 118 around the axis disposed across the supporting arm 115 and the external edge, constantly straining the seal heater 103 by an appropriate repulsion so as to respond to the extension.
  • the seal heater 103 built in the holder 109 is disposed to be freely movable along the vertical direction at the upper portion of the wrapping apparatus together with the holder 109.
  • the seal heater is electrically connected to an impulse generator provided to the wrapping apparatus and set to a state at which it can be powered on by electrical impulse.
  • the item 106 to be wrapped is inserted from the opening. Then the item 106 to be wrapped is sent onto a conveyer 111 of the welding and melt-severing apparatus, as shown in Fig.5(a), still being placed between the fringes of the wrapping film, together with the wrapping film 110.
  • the upper component member 101 descends after recognizing the position of the item 106 to be wrapped, sandwiches the two edges along the lateral and the longitudinal directions of the wrapping film 110 between the upper component member 101 and the lower component member 102, and performs welding and melt-severing of the wrapping film, forming it into an L-shape.
  • the two-fold wrapping film 110 is formed into a bag-like body 203 including the above mentioned item to be wrapped 106, as shown in Fig.5(b), by the newly performed welding and melt-severing of the two longitudinal and lateral edges.
  • the partial welding and melt-severing by the above mentioned forming section 104 punches a portion of the film fringe to form a rectangular pick-up tab 202 for unwrapping to be projecting from the welded fringe, and, at the same time, the above mentioned projecting piece 112 incises, at the base portion of the pick-up tab, the above mentioned slit 204 which will be the tearing point of the welded fringe.
  • the bag-like body 203 formed by the above mentioned is sent to a heat shrink apparatus (see Fig.6) by the conveyer 111 as usual, and heat shrink processing of the wrapping film 110 is performed.
  • the bag-like body 203 shrunk by the heat shrink process, becomes the heat shrink wrapped article 200 wherein the wrapping film 110 is in tight contact with the item 106 to be wrapped.
  • the above mentioned pick-up tab 202 is projecting from the welded fringe 201 at the side of the heat shrink wrapped article. Although the pick-up tab 202 is also shrunk by heating, it preserves the unwrapping function.
  • the above mentioned slit 204 remains as the film tearing point at the side of the heat shrink wrapped article including the welded fringe 201.
  • the slit 204 has a length in the range of 5 to 50%, or preferably 5 to 25%, of the width of the pick up tab 202, and the position and size of the pick-up tab 201 to be formed can be arbitrary determined according to the heat shrink wrapped article, thus giving a better outlook after the heat shrink wrapping process and ensured ease of unwrapping.
  • an arbitrary type used in conventional wrapping film welding and melt-severing apparatuses can be used, when nichrome wire is used with the seal heater 103, not only ribbon wire but also round wire can be used, wherein the surface of the nichrome wire may be in the state of raw material, or surface processing such as teflon coating or the like may be performed in order to prevent the wrapping film from sticking on.
  • heat shrinkable wrapping film single-layer wrapping films such as polypropylene, polyethylene, vinyl chloride, or laminated wrapping films composed of these resins can be recommended.
  • the so-called L-shaped wrapping machine can be recommended, either an automatic type or a manual type of which is applicable to the apparatus of the present invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Packages (AREA)
EP98402630A 1997-10-24 1998-10-22 Umhüllter Gegenstand, heissgeschrumpft und einfach zum Auspacken, ebenso wie das Verfahren und die Vorrichtung zum Umhüllen Withdrawn EP0911259A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP29231197A JP3628499B2 (ja) 1997-10-24 1997-10-24 易開封性熱収縮包装を行うためのフィルム溶着・溶断装置
JP292311/97 1997-10-24

Publications (1)

Publication Number Publication Date
EP0911259A1 true EP0911259A1 (de) 1999-04-28

Family

ID=17780137

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98402630A Withdrawn EP0911259A1 (de) 1997-10-24 1998-10-22 Umhüllter Gegenstand, heissgeschrumpft und einfach zum Auspacken, ebenso wie das Verfahren und die Vorrichtung zum Umhüllen

Country Status (2)

Country Link
EP (1) EP0911259A1 (de)
JP (1) JP3628499B2 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2806375A1 (fr) 2000-03-17 2001-09-21 Multimeca Dispositif pour creer une languette plastique d'ouverture d'une poche soudee
WO2004041526A2 (en) * 2002-10-31 2004-05-21 Cryovac, Inc. Easy-opening feature for flexible packages and process and apparatus for forming same
CN113525817A (zh) * 2021-07-11 2021-10-22 刘佩玲 一种包装封皮边角修整装置
CN115352715A (zh) * 2022-08-29 2022-11-18 山东才聚电子科技有限公司 磁芯外保护纸包覆装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3641732A (en) * 1970-03-05 1972-02-15 Masaaki Fujio Method of packaging packs or articles with a heat-shrinking material
EP0571679A1 (de) * 1992-05-27 1993-12-01 Hanagata Corporation Verfahren zum Herstellen einer geschrumpten Packung und so hergestellte Verpackung
EP0665173A1 (de) * 1994-01-11 1995-08-02 Grace Japan K.K. Leicht zu öffnende thermoschrumpfbare Verpackung

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3641732A (en) * 1970-03-05 1972-02-15 Masaaki Fujio Method of packaging packs or articles with a heat-shrinking material
EP0571679A1 (de) * 1992-05-27 1993-12-01 Hanagata Corporation Verfahren zum Herstellen einer geschrumpten Packung und so hergestellte Verpackung
EP0665173A1 (de) * 1994-01-11 1995-08-02 Grace Japan K.K. Leicht zu öffnende thermoschrumpfbare Verpackung

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2806375A1 (fr) 2000-03-17 2001-09-21 Multimeca Dispositif pour creer une languette plastique d'ouverture d'une poche soudee
EP1136365A1 (de) 2000-03-17 2001-09-26 Multimeca Sarl Gerät zum herstellen einer kunststoff-aufreisslasche an einem geschweissten beutel
WO2004041526A2 (en) * 2002-10-31 2004-05-21 Cryovac, Inc. Easy-opening feature for flexible packages and process and apparatus for forming same
WO2004041526A3 (en) * 2002-10-31 2004-08-12 Cryovac Inc Easy-opening feature for flexible packages and process and apparatus for forming same
US6889483B2 (en) 2002-10-31 2005-05-10 Cryovac, Inc. Easy-opening feature for flexible packages and process and apparatus for forming same
US7021827B2 (en) 2002-10-31 2006-04-04 Cryovac, Inc. Easy-opening feature for flexible packages and process and apparatus for forming same
CN113525817A (zh) * 2021-07-11 2021-10-22 刘佩玲 一种包装封皮边角修整装置
CN115352715A (zh) * 2022-08-29 2022-11-18 山东才聚电子科技有限公司 磁芯外保护纸包覆装置
CN115352715B (zh) * 2022-08-29 2024-01-16 山东才聚电子科技有限公司 磁芯外保护纸包覆装置

Also Published As

Publication number Publication date
JPH11130021A (ja) 1999-05-18
JP3628499B2 (ja) 2005-03-09

Similar Documents

Publication Publication Date Title
US4540619A (en) Thermally shrinkable labeling band
US5240111A (en) Thermally shrunk package
EP0595722A1 (de) Verpackung, eine mit einer lösbaren Lasche versehene Verpackungsfolie verwendend, sowie Verfahren zum Umhüllen eines Gegenstandes mit der Folie
CA2127958C (en) Method and apparatus for forming a shrinkable bag having an integral handle, and a shrinkable handle bag article
EP0911259A1 (de) Umhüllter Gegenstand, heissgeschrumpft und einfach zum Auspacken, ebenso wie das Verfahren und die Vorrichtung zum Umhüllen
EP0731027B1 (de) Verfahren und Vorrichtung zum Verbinden der zusammengefügten Ränder einer heisssiegelbaren Folie in Verpackungsmaschinen
JP3445211B2 (ja) 包材ロール
US4437853A (en) Seam sealing device and technique
EP0665173A1 (de) Leicht zu öffnende thermoschrumpfbare Verpackung
JP2001180622A (ja) 容器の包装方法及び包装体
KR930008960B1 (ko) 필름 포장체
JP2564333B2 (ja) 包装体および包装方法
JPH01199871A (ja) 包装体および包装方法
JPH0688565B2 (ja) 自動製袋充填方法
JPS63272680A (ja) 商品集積包装体及びその製造方法
JP2019116296A (ja) 熱収縮包装体の製造方法、及び熱収縮包装用袋体
JPS6228354A (ja) 易開封性シユリンク包装体ならびにその製造法
JPH0522306U (ja) Ｌ型シーラー包装装置
JP3157393U (ja) フィルム包装体
JP2505088Y2 (ja) 自動包装用商品袋
JPS637939B2 (de)
JPH01199807A (ja) フィルム包装方法及び装置
JPH04267724A (ja) 包装装置
JPS6348784B2 (de)
JPH0685273U (ja) 包装体

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE ES FR GB IT

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17P Request for examination filed

Effective date: 19990708

AKX Designation fees paid

Free format text: DE ES FR GB IT

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 20010811