US20110177268A1 - Film of plastics material stretched to present a privileged shrinkage orientation, a heat-shrink sleeve made out of the film, and an article covered in such a sleeve - Google Patents

Film of plastics material stretched to present a privileged shrinkage orientation, a heat-shrink sleeve made out of the film, and an article covered in such a sleeve Download PDF

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Publication number
US20110177268A1
US20110177268A1 US13/006,783 US201113006783A US2011177268A1 US 20110177268 A1 US20110177268 A1 US 20110177268A1 US 201113006783 A US201113006783 A US 201113006783A US 2011177268 A1 US2011177268 A1 US 2011177268A1
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US
United States
Prior art keywords
film
line
heat
tear
sleeve
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.)
Abandoned
Application number
US13/006,783
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English (en)
Inventor
Eric Fresnel
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.)
Sleever International Co SA
Original Assignee
Sleever International Co SA
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 Sleever International Co SA filed Critical Sleever International Co SA
Assigned to SLEEVER INTERNATIONAL COMPANY reassignment SLEEVER INTERNATIONAL COMPANY ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: FRESNEL, ERIC
Publication of US20110177268A1 publication Critical patent/US20110177268A1/en
Abandoned legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D23/00—Details of bottles or jars not otherwise provided for
    • B65D23/08—Coverings or external coatings
    • B65D23/0842—Sheets or tubes applied around the bottle with or without subsequent folding operations
    • B65D23/0878—Shrunk on the bottle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C61/00—Shaping by liberation of internal stresses; Making preforms having internal stresses; Apparatus therefor
    • B29C61/06—Making preforms having internal stresses, e.g. plastic memory
    • B29C61/0608—Making preforms having internal stresses, e.g. plastic memory characterised by the configuration or structure of the preforms
    • 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
    • B65D55/00—Accessories for container closures not otherwise provided for
    • B65D55/02—Locking devices; Means for discouraging or indicating unauthorised opening or removal of closure
    • B65D55/06—Deformable or tearable wires, strings, or strips; Use of seals, e.g. destructible locking pins
    • B65D55/08—Annular elements encircling container necks
    • B65D55/0818—Destructible or permanently removable bands, e.g. adhesive
    • B65D55/0854—Shrink-film bands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
    • B29C59/007—Forming single grooves or ribs, e.g. tear lines, weak spots
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C61/00—Shaping by liberation of internal stresses; Making preforms having internal stresses; Apparatus therefor
    • B29C61/02—Thermal shrinking
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/1328—Shrinkable or shrunk [e.g., due to heat, solvent, volatile agent, restraint removal, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/15—Sheet, web, or layer weakened to permit separation through thickness

Definitions

  • the invention relates to a film of single-oriented plastics material for fabricating a tearable heat-shrink sleeve, and to a heat-shrink sleeve made from such a film.
  • Heat-shrink sleeves are known that are constituted by a film of single-oriented plastics material that has previously been stretched in a determined direction in order to give it a capacity for shrinkage under the effect of heat in the stretching direction. Such sleeves are used in particular for covering the walls of containers of all kinds.
  • a sleeve of this type could be used for covering the wall of a container together with its stopper so as to guarantee that it has not been opened. It is then advantageous to provide controlled tear means in the sleeve so as to enable the sleeve to be subdivided into a portion that remains permanently on the container, and a portion that is removed by the user so as to enable the container to be opened.
  • This problem of random tearability may also be encountered in sleeves made using stretch films of structure that is made strongly non-uniform by including molecules of large size that form obstacles to the tearability of the sleeve (e.g. an inclusion of polystyrene in a film constituted of styrene and butadiene copolymers, or indeed an inclusion of polyethylene copolymers in a film constituted of a polyethylene homopolymer).
  • this kind of problem is not encountered in the field of tearable adhesive labels since they are made of paper or of a film of plastics material that is amorphous or that presents two orientations.
  • Document GB 1 013 783 describes making tear lines that comprise a line of mechanical weakness bordered by a local region of extra thickness constituted by an applied strip.
  • An object of the invention is to propose a single-oriented film that enables heat-shrink sleeves to be made that are tearable along a predefined tear line.
  • the invention provides a film of plastics material stretched to present a privileged shrinkage orientation and used in particular for fabricating heat-shrink sleeves, the film including at least one line of mechanical weakness and at least one local region of extra thickness extending along the line of weakness so as to border it.
  • the local region of extra thickness is constituted by applying liquid or semi-liquid material to the film, the applied material being applied to the film in a quantity that depends on the expected shrinkage ratio in the portion of the film that includes the tear line while a sleeve made using such a film is being heat-shrunk onto an article.
  • Adapting the quantity of material that is applied enables the film to be stiffened locally in such a manner that the extra thickness applied in this way acts as a tearing guide, while nevertheless being capable of following heat-shrinkage of the film without countering such shrinkage to such an extent that the film forms waves in the shrunk sleeve.
  • two parallel tear lines are formed in the film, each being defined by juxtaposing at least one line of weakness and at least one adjacent local region of extra thickness.
  • the two tear lines define between them a tear strip. It is then advantageous to provide a cup extending transversely to the two lines in the film so as to define a grip tab for the tear strip in the sleeve.
  • FIG. 1 is a perspective view of a container covered in a heat-shrink sleeve made from a heat-shrink film with a tear line of the invention
  • FIG. 2A is a section view of line II of FIG. 4 showing a heat-shrink film in a first embodiment of the invention, the thicknesses of the film being exaggerated for greater clarity;
  • FIG. 2B is a section view analogous to FIG. 2A of a heat-shrink film in a second embodiment of the invention
  • FIG. 2C is a section view analogous to FIG. 2A of a heat-shrink film in a third embodiment of the invention.
  • FIG. 2D is a section view on line III-III of FIG. 5 showing a heat-shrink film in a fourth embodiment of the invention.
  • FIG. 3 is a perspective view of a container covered in a heat-shrink sleeve made from a heat-shrink film having a tear line of the invention
  • FIG. 4 is a view of the film used for covering the container of FIG. 1 , the film being shown flat;
  • FIG. 5 is a view of the film used for covering the container of FIG. 3 , the film being shown flat with local magnification concerning the tear line.
  • the technological field of heat-shrink films made of stretched thermoplastic material is well known, and it suffices here to recall that such a film may present a shrinkage ratio that is considerable.
  • the invention applies in particular to films that are stretched, e.g. so as to give them a privileged orientation, and although not limited thereto, it applies to a film of polyethylene copolymer including a given percentage of crystallites, the majority of which are oriented in the stretch direction.
  • FIG. 1 shows a container 1 covered in a heat-shrink sleeve 2 that is fabricated from a heat-shrink film presenting two parallel tear lines 10 , 20 of the invention that define between them a tear strip 30 .
  • a transverse cut 31 defines a grip tab 32 in the tear strip 30 to enable the user to initiate tearing of the tear strip 30 .
  • the tear lines 10 , 20 extend in the stretch direction of the film, and thus perpendicularly to the privileged orientation of the film.
  • Tearing the tear strip 30 enables the bottom portion 3 of the sleeve, i.e. a portion that remains permanently on the container, to be separated from the top portion 4 of the sleeve that can be removed, thereby giving access to the stopper of the container.
  • the film used is a heat-shrink film obtained by stretching a film of plastics material, e.g. of polyethylene.
  • the tear lines 20 extend parallel to the stretch direction of the film (and thus to the main shrinkage direction of the sleeve).
  • the tear lines 10 , 20 are located on the container of FIG. 1 in a region that is of greatly-varying shape, and it is therefore subjected to large shrinkage ratios during heat-shrinking of the sleeve made from the film of FIG. 4 .
  • two lines of weakness 11 , 21 are made in the film, in this example by laser cutting to half-depth in the thickness of the film (for reasons of simplification, the film is shown as comprising a single layer, but that is not limiting, and the film could comprise a plurality of layers).
  • a layer of polymer varnish 25 is applied to the surface of the film so as to form a strip that extends between the lines of weakness 11 , 21 up to the vicinity thereof so as to form local extra thicknesses 12 , 22 bordering the lines of weakness 11 , 21 .
  • Associating a line of weakness with an adjacent local region of extra thickness defines a tear line along which the sleeve can be torn.
  • the two tear lines as defined in this way define between them the tear strip 30 .
  • the film as prepared in this way is subjected to heat-shrinking, including in the portions of the film that constitute the tear lines as made in this way.
  • the varnish applied on the heat-shrink film stiffens the film locally, and although it shrinks with the film, it locally reduces the ability of the film to shrink.
  • the tear lines 10 , 20 extend in this example over a portion of the container 1 that presents a small diameter and in which the amount of shrinkage of the sleeve during heat-shrinking is particularly great. It is thus appropriate for the extra thickness as applied in this way not to oppose the shrinkage capacity of the film forming the sleeve.
  • tear lines 110 , 120 are formed by making lines of weakness 111 , 121 in the film that are bordered by local regions 112 , 112 ′ of extra thickness that extend on either side of the line of weakness 111 , and local regions 122 , 122 ′ of extra thickness that extend on either side of the line of weakness 121 . Between them, the two lines of weakness 110 , 120 define a tear strip 130 .
  • the lines of weakness are made by laser cutting to half-depth, while the regions of local extra thickness are made by applying polymer varnish.
  • the tear lines 210 , 220 comprise lines of weakness 211 , 221 bordered on the outside of the tear strip 230 by local regions 212 , 222 of extra thickness.
  • the tear line extends parallel to the stretch direction of the film, this configuration is not essential.
  • such a film enables sleeves to be made in which the tear line extends along a spiral, thus making it possible, on initiating tearing at the top of the sleeve, to separate the sleeve entirely from the container.
  • the tear line 310 includes both a weakness line 311 , constituted by a sequence of microperforations in alignment, and also a local region 312 of extra thickness bordering the line of weakness 311 .
  • the local extra thickness may be obtained as shown above by applying a varnish, and more generally by applying a liquid or semi-liquid material of controlled viscosity.
  • the material may be applied by contact (pad, brush, syringe, . . . ) or indeed without contact (controlled flow rate nozzle, coated cylinder, . . . ).
  • the material is then preferably dried in controlled manner (blowing hot air, ultraviolet (UV) radiation, . . . ).
  • the material used may be transparent, or indeed it may be colored, or it may include inclusions such as pigments or flakes, thereby providing an appearance effect, or making the tear line easier to see.
  • tear lines are straight, these lines could be curved, or they could indeed extend around a closed outline so as to define a portion that is removable from the sleeve and that can be taken off by tearing along the closed tear line.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wrappers (AREA)
  • Packages (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Gloves (AREA)
US13/006,783 2010-01-15 2011-01-14 Film of plastics material stretched to present a privileged shrinkage orientation, a heat-shrink sleeve made out of the film, and an article covered in such a sleeve Abandoned US20110177268A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1050283 2010-01-15
FR1050283A FR2955327B1 (fr) 2010-01-15 2010-01-15 Film en matiere plastique mono-oriente pour la fabrication d'un manchon thermoretractable dechirable, et manchon realise a partir d'un tel film

Publications (1)

Publication Number Publication Date
US20110177268A1 true US20110177268A1 (en) 2011-07-21

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
US13/006,783 Abandoned US20110177268A1 (en) 2010-01-15 2011-01-14 Film of plastics material stretched to present a privileged shrinkage orientation, a heat-shrink sleeve made out of the film, and an article covered in such a sleeve

Country Status (6)

Country Link
US (1) US20110177268A1 (fr)
EP (1) EP2354033A1 (fr)
BR (1) BRPI1100705A2 (fr)
CA (1) CA2728529A1 (fr)
FR (1) FR2955327B1 (fr)
MX (1) MX2011000505A (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013120756A1 (fr) * 2012-02-15 2013-08-22 British American Tobacco (Investments) Limited Emballage
DE102012021916A1 (de) * 2012-11-09 2014-05-15 Krones Ag Schrumpfverpackung, Vorrichtung zur Herstellung einer Schrumpfverpackung und Verfahren zur Herstellung einer Schrumpfverpackung
US20140173867A1 (en) * 2012-12-20 2014-06-26 SafeHandles, LLC Replaceable Antimicrobial System
US20140319096A1 (en) * 2012-01-09 2014-10-30 Henkel Ag & Co. Kgaa Bottle having a shrink-fitted plastic film and method for producing same
JP2015121743A (ja) * 2013-12-25 2015-07-02 株式会社フジシール 熱収縮性巻付けラベル
WO2015193670A1 (fr) * 2014-06-17 2015-12-23 Robinsons Soft Drinks Limited Récipient
CN105564807A (zh) * 2015-12-25 2016-05-11 上海钰芊容器有限公司 容器的密封方法
JP2017121939A (ja) * 2016-01-05 2017-07-13 大倉工業株式会社 ブローボトル包装体およびブローボトル包装体の製造方法
US20170245719A1 (en) * 2016-02-29 2017-08-31 Lg Electronics Inc. Vacuum cleaner
US10422158B2 (en) 2012-12-20 2019-09-24 SafeHandles, LLC Replaceable antimicrobial system

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Publication number Priority date Publication date Assignee Title
US2494965A (en) * 1946-12-27 1950-01-17 Milprint Inc Composite commodity wrapper
US5544770A (en) * 1993-05-07 1996-08-13 Travisano; Frank P. Tamper evident seal and system
US5630308A (en) * 1990-07-09 1997-05-20 American National Can Company Laser scoring of packaging substrates
WO1998054066A1 (fr) * 1997-05-30 1998-12-03 Sleever International Company Enveloppe d'emballage d'objet en materiau thermoretractable a bande d'arrachage circonferentielle
FR2778892A1 (fr) * 1998-05-20 1999-11-26 Sleever Int Enveloppe de securite pour objets, du type constitue par un manchon en matiere plastique thermoretractable equipe d'une bande metallisee d'identification
JP2000159235A (ja) * 1998-11-24 2000-06-13 Toppan Printing Co Ltd シュリンクフィルム
US20020157980A1 (en) * 2001-04-26 2002-10-31 3M Innovative Properties Company Product packaging with handle-forming tearable tape system
US20050031232A1 (en) * 2001-11-28 2005-02-10 Jean-Claude Jammet Package such as a bag with oriented tear opening
US20050249897A1 (en) * 2002-06-19 2005-11-10 Sleever International Company Wrap for packaging at least one object, of the type consisting of a shrinkable plastic material sleeve
US20060113361A1 (en) * 2004-12-01 2006-06-01 Philip Morris Usa Inc. Packaged article with improved wrapper
US20070009699A1 (en) * 2001-01-08 2007-01-11 Jonathan Hewitt Films, packaging and methods for making them
US7416521B2 (en) * 2004-08-16 2008-08-26 Forman Harold M Easy-open packages

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GB1013783A (en) * 1961-05-25 1965-12-22 Bx Plastics Ltd Improvements in or relating to tear tapes for plastic films
GB2271333B (en) * 1992-10-08 1996-01-24 Smurfit Ltd Tamper-evident shrink sleeve
GB2273492A (en) * 1992-12-21 1994-06-22 Smurfit Ltd Tamper evident shrink sleeve
FR2789978B1 (fr) * 1999-02-22 2001-04-27 Pechiney Emballage Alimentaire Coiffes a ouverture facile pour vins effervescents
FR2803833B1 (fr) * 2000-01-14 2002-04-05 Sleever Int Enveloppe destinee a l'emballage d'un flacon a poignee laterale, du type constitue par un manchon en matiere plastique thermoretractable
WO2005100186A1 (fr) * 2004-04-15 2005-10-27 Prozumenshchikov Andrey Boriso Bouchon

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US2494965A (en) * 1946-12-27 1950-01-17 Milprint Inc Composite commodity wrapper
US5630308A (en) * 1990-07-09 1997-05-20 American National Can Company Laser scoring of packaging substrates
US5544770A (en) * 1993-05-07 1996-08-13 Travisano; Frank P. Tamper evident seal and system
WO1998054066A1 (fr) * 1997-05-30 1998-12-03 Sleever International Company Enveloppe d'emballage d'objet en materiau thermoretractable a bande d'arrachage circonferentielle
FR2778892A1 (fr) * 1998-05-20 1999-11-26 Sleever Int Enveloppe de securite pour objets, du type constitue par un manchon en matiere plastique thermoretractable equipe d'une bande metallisee d'identification
JP2000159235A (ja) * 1998-11-24 2000-06-13 Toppan Printing Co Ltd シュリンクフィルム
US20070009699A1 (en) * 2001-01-08 2007-01-11 Jonathan Hewitt Films, packaging and methods for making them
US20020157980A1 (en) * 2001-04-26 2002-10-31 3M Innovative Properties Company Product packaging with handle-forming tearable tape system
US20050031232A1 (en) * 2001-11-28 2005-02-10 Jean-Claude Jammet Package such as a bag with oriented tear opening
US20050249897A1 (en) * 2002-06-19 2005-11-10 Sleever International Company Wrap for packaging at least one object, of the type consisting of a shrinkable plastic material sleeve
US7416521B2 (en) * 2004-08-16 2008-08-26 Forman Harold M Easy-open packages
US20060113361A1 (en) * 2004-12-01 2006-06-01 Philip Morris Usa Inc. Packaged article with improved wrapper

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Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140319096A1 (en) * 2012-01-09 2014-10-30 Henkel Ag & Co. Kgaa Bottle having a shrink-fitted plastic film and method for producing same
RU2614612C2 (ru) * 2012-02-15 2017-03-28 Бритиш Америкэн Тобэкко (Инвестментс) Лимитед Упаковка
CN104105644A (zh) * 2012-02-15 2014-10-15 英美烟草(投资)有限公司 包装
US20150021218A1 (en) * 2012-02-15 2015-01-22 British American Tobacco (Investments) Limited Packaging
JP2015506317A (ja) * 2012-02-15 2015-03-02 ブリティッシュ アメリカン タバコ （インヴェストメンツ） リミテッドＢｒｉｔｉｓｈ Ａｍｅｒｉｃａｎｔｏｂａｃｃｏ （Ｉｎｖｅｓｔｍｅｎｔｓ） Ｌｉｍｉｔｅｄ パッケージ
AU2013220605B2 (en) * 2012-02-15 2015-05-28 British American Tobacco (Investments) Limited Packaging
WO2013120756A1 (fr) * 2012-02-15 2013-08-22 British American Tobacco (Investments) Limited Emballage
US9828156B2 (en) * 2012-02-15 2017-11-28 British American Tobacco (Investments) Limited Packaging
DE102012021916A1 (de) * 2012-11-09 2014-05-15 Krones Ag Schrumpfverpackung, Vorrichtung zur Herstellung einer Schrumpfverpackung und Verfahren zur Herstellung einer Schrumpfverpackung
US20140173867A1 (en) * 2012-12-20 2014-06-26 SafeHandles, LLC Replaceable Antimicrobial System
US10422158B2 (en) 2012-12-20 2019-09-24 SafeHandles, LLC Replaceable antimicrobial system
JP2015121743A (ja) * 2013-12-25 2015-07-02 株式会社フジシール 熱収縮性巻付けラベル
WO2015193670A1 (fr) * 2014-06-17 2015-12-23 Robinsons Soft Drinks Limited Récipient
CN105564807A (zh) * 2015-12-25 2016-05-11 上海钰芊容器有限公司 容器的密封方法
JP2017121939A (ja) * 2016-01-05 2017-07-13 大倉工業株式会社 ブローボトル包装体およびブローボトル包装体の製造方法
US20170245719A1 (en) * 2016-02-29 2017-08-31 Lg Electronics Inc. Vacuum cleaner

Also Published As

Publication number Publication date
MX2011000505A (es) 2011-07-21
FR2955327B1 (fr) 2013-02-01
BRPI1100705A2 (pt) 2012-10-30
CA2728529A1 (fr) 2011-07-15
EP2354033A1 (fr) 2011-08-10
FR2955327A1 (fr) 2011-07-22

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