US20050229542A1 - Envelope for packaging object(s)made of shrinkable material with raised design - Google Patents

Envelope for packaging object(s)made of shrinkable material with raised design Download PDF

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Publication number
US20050229542A1
US20050229542A1 US10/517,959 US51795904A US2005229542A1 US 20050229542 A1 US20050229542 A1 US 20050229542A1 US 51795904 A US51795904 A US 51795904A US 2005229542 A1 US2005229542 A1 US 2005229542A1
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US
United States
Prior art keywords
sleeve
film
article
embossed
face
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
US10/517,959
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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 US20050229542A1 publication Critical patent/US20050229542A1/en
Priority to US11/766,910 priority Critical patent/US7837818B2/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
    • 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
    • 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
    • B29C61/025—Thermal shrinking for the production of hollow or tubular articles
    • 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
    • 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
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/36—Bending and joining, e.g. for making hollow articles
    • B29C53/38—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges
    • B29C53/48—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges for articles of indefinite length, i.e. bending a strip progressively
    • 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
    • B29C59/02—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing
    • B29C59/04—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing using rollers or endless belts
    • B29C59/046—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing using rollers or endless belts for layered or coated substantially flat surfaces
    • 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
    • B29C61/10—Making preforms having internal stresses, e.g. plastic memory by bending plates or sheets
    • 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
    • B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
    • B29C63/38—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor by liberation of internal stresses
    • B29C63/42—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor by liberation of internal stresses using tubular layers or sheathings
    • 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
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1002—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
    • Y10T156/1007—Running or continuous length work
    • Y10T156/1008—Longitudinal bending
    • Y10T156/1013—Longitudinal bending and edge-joining of one piece blank to form tube
    • 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
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1002—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
    • Y10T156/1007—Running or continuous length work
    • Y10T156/1023—Surface deformation only [e.g., embossing]

Definitions

  • the present invention relates to the field of packaging articles, and more particularly packaging implemented by means of a wrapper constituted by a sleeve of heat-shrink plastic material for shrinking onto the article(s) concerned.
  • the technique of packaging one or more articles using a heat-shrink sleeve made in the form of a sleeve that is engaged over the article(s) to be packaged and that is then heat-shrunk onto said article(s) has already been in use for about thirty years.
  • the technique of heat-shrinking by applying a heat field to the outside of the sleeve in order to shrink the sleeve uniformly onto the article, even when said article is of section that varies greatly, is now thoroughly mastered. As an indication, it is now possible to achieve shrinkage ratios of as much as 70% to 80% in section.
  • Anamorphosis techniques enabling printing to be performed on the sleeve so that the printing remains readable after the sleeve has been shrunk onto an article are also thoroughly mastered, with this being particularly important in the fields of pharmaceuticals and cosmetics.
  • Document EP-A-0 537 455 describes registration marking applied to an elastic packaging sheet so as to obtain a pattern (in particular a screen pattern) which remains when the sheet is stretched. Nevertheless, that document relates to thermoplastic sheets which are stapled to pallets, and it does not relate to heat-shrink sleeves.
  • Document U.S. Pat. No. 6,020,823 describes fastening sound or light-emitting articles to a bottle, by using a heat-shrink sleeve.
  • the sleeve may be of single thickness, in which case the articles are stuck to the inside face of the sleeve, prior to the sleeve being put into place on the bottle and shrunk, or it may have two thicknesses, in which case the articles are sandwiched between two sheets (which may be heat-shrink or otherwise). It should be observed that the relief that is apparent on the outside is no more than the outline of the article that is held captive, as can be seen clearly from FIG. 6 .
  • An object of the invention is to devise a novel technique enabling printed patterns to be made that can be perceived not only visually from the outside of the sleeve that has been shrunk on the article to be packaged, but that can also be perceived by touch.
  • Portions in relief are already obtained in strip material in certain fields, but the material used is restricted to inert materials such as paper or flexible metal. No attempt has yet been made to obtain portions in relief on heat-shrink plastics materials, presumably because of a strong prejudice on the part of the person skilled in the art having every reason to believe that a portion in relief made before shrinkage will become attenuated or even disappear completely once the sleeve has been shrunk onto an article.
  • Shrinking the wall of the sleeve exerts tension in a circumferential direction which tends to pull on all zones of the sleeve wall, so it is logical to dispense with forming portions in relief on said sleeves of heat-shrink plastics material.
  • the present invention comes from an approach that goes against that prejudice, and proposes an article-packaging wrapper constituted by a sleeve of heat-shrink plastics material for shrinking onto the article(s) to be packaged, said sleeve being made from a film folded in half with the corresponding end zones being united, said wrapper being remarkable in that the wall of the sleeve is embossed at least in part with a predetermined pattern so that said pattern appears in relief on the outside and/or inside face of the sleeve and remains after said sleeve has been shrunk onto the article(s) to be packaged.
  • Embossing a predetermined pattern thus enables relief to be produced that can be perceived on the outside face of the sleeve both visually and by touch.
  • the film constituting the sleeve is a semi-rigid film including an elastomeric phase in its formulation.
  • the effect of shrinking the sleeve is to stretch its wall against the outside surface of the article without significantly deforming the embossed pattern.
  • the wall tension becomes such as to run the risk of significantly affecting the embossed pattern.
  • the inside and/or outside face of the sleeve should be covered in those of its embossed zones that are concerned by a high shrinkage ratio while said sleeve is being shrunk onto the article(s) to be packaged, in particular when the shrinkage ratio exceeds about 10% to 15%.
  • the technical agent may be coated on the inside and/or outside face, said technical agent being a thermosetting varnish or the like that locally blocks shrinkage of the sleeve wall at the embossed pattern, or in a variant it may be a thermoswelling varnish or the like that locally pushes away the sleeve wall at the embossed pattern while the sleeve is being shrunk.
  • thermosetting or thermoswelling technical varnish is selected so as to be reactivatable at a temperature that is compatible with the temperature range used for heat-shrinking the film constituting the sleeve.
  • thermosetting or thermoswelling technical varnish may be deposited on a zone surrounding the embossed pattern, and/or it may be deposited on the inside and/or outside face of the sleeve, in particular in the indentations formed by the embossed pattern.
  • the technical agent in a variant, provision can be made for the technical agent to be deposited on the inside or outside face of the sleeve in the indentations formed by the embossed pattern, said technical agent being a rigid or semi-rigid insert.
  • the above-mentioned insert may present a fine screen on its free face, for example a multiple-diffraction screen of the lens type.
  • the invention also provides a method of manufacturing an article-packaging wrapper presenting one or more of the above-specified characteristics.
  • the manufacturing method is remarkable in that the film for constituting the heat-shrink sleeve is embossed while flat to have a predetermined pattern, the embossed film then being folded in half so that said pattern appears in relief on the convex outside face and/or the concave inside face of said film, and the corresponding end zones are united.
  • a semi-rigid film including an elastomeric phase in its formulation.
  • the film is coated on its face that corresponds to the hollow side of the embossing, and/or on the opposite face, with a technical agent that is positioned and registered to encourage the relief to be maintained during shrinkage of the wall of the film.
  • the corresponding face of the film is coated in a technical agent constituted by a thermosetting varnish or the like, or a thermoswelling varnish or the like.
  • the steps of embossing and optionally locally coating in a technical agent are then preferably implemented continuously on the film while it is traveling flat, prior to said film being shaped into a continuous sheath suitable for being stored in the flattened state by being wound onto a reel, the sleeves used for packaging articles being obtained by cutting segments from said continuous sheath.
  • the corresponding face of the film is covered, in the embossing indentation, in a technical agent constituted by a rigid or semi-rigid insert. Provision can then be made for the free face of said insert to be worked so as to present a fine screen, in particular a multiple-diffraction screen of the lens type.
  • the steps of embossing and putting into place the insert(s), and possibly also of working said insert(s), are implemented continuously on the film as it travels flat, prior to said film being shaped into a continuous sheath suitable for being stored in the flattened state by being wound onto a reel, with the sleeve used for article packaging being obtained by cutting segments from said continuous sheath.
  • FIG. 1 shows an article-packaging wrapper having an embossed wall in accordance with the invention, and for placing on an article, which in this case is a perfume spray;
  • FIG. 2 shows the above wrapper shrunk onto the article, with embossed patterns (in this case a letter A and a square) remaining on the outside face of said wrapper;
  • FIG. 3 is a cross-section through the wrapper on line III-III of FIG. 1 , through the embossed zones of the wall of the film constituting the sleeve;
  • FIG. 4 and FIG. 5 which is a section on V-V show another variant in which the embossed pattern of square shape appears in relief on the inside face of the sleeve;
  • FIG. 6 is a fragmentary section of the wall of the sleeve shown flat, at the location of an embossed pattern which appears on the outside or inside face of the sleeve, with the inside and/or outside face of the sleeve being at least partially coated in a positioned and registered technical agent such as a varnish for encouraging the embossed relief to be maintained while said sleeve is shrinking;
  • FIG. 7 is a section view analogous to that of FIG. 3 showing another variant in which the technical agent in the location of the hollow side of the embossed square pattern is constituted by a rigid or semi-rigid insert;
  • FIG. 8 shows a detail VIII of FIG. 7 on a greatly enlarged scale to show the way the free face of the insert may be screened, in particular with a screen of the lens type;
  • FIG. 9 is a perspective view of the method of continuously manufacturing a packaging wrapper in accordance with the invention, starting from a film of heat-shrink plastics material traveling flat;
  • FIG. 10 shows the continuous sheath made in this way stored in a flattened state.
  • FIG. 1 shows an article-packaging wrapper in accordance with the invention for packaging an article 1 , which in this case is a perfume spray, which comprises a body 2 surmounted by a pushbutton-forming cap 3 fitted with a spray nozzle 4 , the circular connection zone referenced 5 corresponding to a large change in section between the body 2 and the cap 3 .
  • the packaging wrapper referenced 10 is constituted by a sleeve 11 of heat-shrink plastics material which is open at both ends, said sleeve being shown not as a perfect cylinder, but in the form of an open sheath that has two side folds, as a reminder that this type of sleeve is obtained by cutting segments from a flattened sheath wound on a reel.
  • the sleeve 11 is made from a continuous sheath, itself obtained by putting the edges of a film that is folded in half into edge-to-edge or edge-on-edge contact with the contacting edges being bonded together, e.g. forming a margin referenced 12 .
  • the sleeve as made in this way presents an outside face referenced 13 and an inside face referenced 14 .
  • the sleeve 11 is thus made from a film that has been folded in half with the corresponding end zones being united in accordance with a technique that is well known in the art in question.
  • the wall of the sleeve 11 is embossed at least in part with a predetermined pattern 15 so that said pattern appears in relief on the outside and/or inside face 13 and/or 14 of the sleeve 11 and remains there after said sleeve has been shrunk onto the packaged article(s).
  • the figure shows an embossed pattern 15 representing the letter A, and an embossed pattern in the form of a square that is offset upwards from said letter, said pattern in this case projecting from the outside face 13 of the sleeve.
  • This embossed pattern 15 can thus readily be perceived both visually and by touch.
  • the section of FIG. 3 shows more clearly how the embossed pattern 15 is arranged, and in the example shown it is obtained (as described below) by the film passing between two embossing rollers presenting patterns matching the desired pattern, said patterns projecting or being recessed, as appropriate.
  • the embossed pattern 15 may be organized so as to appear in part or in full in relief on the inside face 14 of the sleeve 11 .
  • the portion of the embossed pattern 15 which is represented by a square thus appears in relief on the inside face 14
  • the portion represented by the letter A appears in relief on the outside face 13 .
  • the sleeve 11 is thus made with its embossed pattern 15 projecting in relief on the outside face 13 and/or on the inside face 14 of said sleeve.
  • the sleeve 11 is subsequently engaged on the article 1 , and the sleeved article is passed through a shrinking tunnel (not shown) having the effect of shrinking the wall of the sleeve onto the outside surface of the article, with the final result being as shown in FIG. 2 .
  • the embossed pattern 15 remains apparent in relief, in this case on the outside face of the shrunk sleeve, thus remaining in spite of the shrinking of said sleeve, and in spite of the high shrinkage ratio over the connection 5 where the embossed square pattern is located, while the pattern in the form of the letter A is subjected to a smaller amount of stress during shrinking.
  • the shrinkage ratio may vary to a very large extent over the sleeve concerned, and said ratio can sometimes reach values as great as 70% or 80%.
  • the inside and/or outside face 14 and/or 13 of the sleeve 11 is covered at least in part in the location of the embossed pattern 15 in a technical agent that is positioned and registered so as to facilitate maintenance of the relief during shrinkage of the sleeve.
  • This covering in a technical agent is provided on a priority basis in the location of those embossed zones that are associated with a high shrinkage ratio while said sleeve is being shrunk onto the article(s) to be packaged, and in particular a ratio exceeding about 10% to 15%.
  • Present printing techniques are capable of performing very accurate registration (to within one-tenth of a millimeter), thereby guaranteeing that covering is preformed very accurately in the location of the embossed pattern.
  • the technical agent is coated onto the corresponding face of the sleeve, the agent being implemented in the form of a special varnish.
  • Such coating is shown in FIG. 6 with examples referenced a) to e).
  • zones of the embossed pattern 15 presenting portions in relief 15 . 1 , i.e. male portions, on the side of the film that corresponds to one of the faces of the final sleeve, and recessed or female portions 15 . 2 associated with the opposite face of said sleeve.
  • coating with the technical agent is represented by a dashed-line layer 16 .
  • the technical agent 16 is deposited on a zone of the corresponding face that surrounds the embossed pattern 15 .
  • the technical agent 16 is deposited on the same face, but only in the recesses formed by the embossed pattern 15 .
  • the technical agent 16 is coated both in the recesses formed by the embossed pattern 15 , and on the zones surrounding said embossed pattern.
  • the technical agent could also be coated on the other face of the sleeve, as shown in FIGS. 6 d ) and 6 e ), either in addition to coating on the preceding face, or instead of such coating. Coating can thus relate to the outside face and/or to the inside face of the sleeve. Nevertheless, coating of the inside face is often preferable insofar as the sleeve is obtained from a continuous sheath which is stored in the flat state, so that the presence of coating on the inside face ensures that said coating is well protected from the outside while the sheath is being handled to be cut into segments constituting individual sleeves, and while the sleeves as cut apart in this way are being put into place.
  • the coated technical agent 16 may be a thermosetting varnish or the like that serves locally to block shrinkage of the wall of the sleeve 11 in the location of the embossed pattern 15 .
  • a thermoswelling varnish or ink or the like it is possible to use as the technical agent 16 serving locally to push back the wall of the sleeve 11 in the location of the embossed pattern 15 during shrinkage of the sleeve 11 .
  • thermosetting or thermoswelling technical varnish 16 is selected so as to be reactivatable at a temperature that is compatible with the temperature range used for heat-shrinking the film constituting the sleeve 11 .
  • thermoswelling agent or the like achieves much the same result, namely retaining the embossed pattern in relief, but does so by providing localized swelling in the portions in relief so as to maintain said portions in relief during shrinkage. Under such circumstances, the coating should be applied solely to the inside or outside face that presents the recessed portions of the embossed pattern.
  • thermosetting or thermoswelling can be put into action by any type of external agent, such as heat, irradiation, exposure to ultraviolet radiation (hence the use of the term “or the like” above).
  • the reactivation temperature should preferably be selected to be below the softening point of the wall of the sleeve so that the varnish comes fully into effect while the sleeve is being shrunk onto the article.
  • the technical agent is deposited on the inside face or the outside face of the sleeve in the recesses formed by the embossed pattern, said agent being constituted by a rigid or semi-rigid insert.
  • a rigid or semi-rigid insert Such a variant is shown in FIG. 7 , where there can be seen an insert 17 whose own rigidity is sufficient to provide the mechanical function of maintaining the embossed pattern during shrinkage of the sleeve, by withstanding the forces exerted in a circumferential direction.
  • the insert 17 may be adhesive, and its thickness may be of millimeter order.
  • the free face of the insert 17 may present a fine screen, in particular a multiple-diffraction screen of the lens type.
  • the material constituting the wrapper is preferably a thermoplastic film of a memory material that is mono-oriented or bi-oriented, being made of polystyrene or polypropylene, materials which lend themselves particularly well to deformation. Tests undertaken by the Applicant have shown that excellent results are obtained by using a semi-rigid film including an elastomeric phase in its formulation. Such a material has been found to be extremely favorable for remanance of the embossed pattern once the sleeve has been shrunk onto an article, even for an article presenting large variations in section.
  • the embossed pattern may be of a very wide variety of types, going from figurative representations to texts, as on credit cards, or it could also be in the form of an overall decorative pattern covering nearly all of the sleeve, for the purpose of giving a specific external appearance to the outside wall of the sleeve, e.g. by imitating the appearance of grained leather or of grained paper presenting grains in relief.
  • a screen or the like e.g. of the lens type
  • the invention also relates to a method of manufacturing an article-packaging wrapper of the above-described type, and reference can be made to FIG. 9 which shows the various steps of the method.
  • FIG. 9 shows a film F running continuously while flat through a general processing station 100 .
  • the film is preferably a semi-rigid film including in its formulation an elastomeric phase.
  • the film F begins by passing through an embossing station 101 .
  • the film F passes, for example, between two complementary rollers 20 and 21 , in this case presenting respectively recesses 20 . 1 and complementary portions in relief 21 . 1 which perform localized embossing 15 of the film F as it passes between said rollers which are pressed against each other.
  • the embossed film F passes through a coating station 102 in which a coating roller 22 presenting active zones 23 locally applies a technical agent 16 locally in registered positions for encouraging retention of the relief during subsequent shrinkage.
  • a backing roller 24 ensures that the coating roller 22 is properly applied, which roller is fed with varnish via an associated pipe 25 .
  • the film F as embossed and locally coated in this way finally reaches a shaping station 103 where the film is shaped into a sheath G by bringing its side edges 12 together and uniting them, e.g. by conventional heat-sealing, with the embossed pattern 15 then appearing in relief on the convex outside face or on the concave inside face, as the case may be.
  • manufacturing can be performed continuously with the film F that is to constitute the heat-shrink sleeve 11 being embossed while flat with a predetermined pattern 15 , and the embossed film F subsequently being folded in half so as to cause said pattern to appear in relief on the convex outside face 13 and/or on the concave inside face 14 of the film, with the edge zones 12 concerned being united.
  • the film F Prior to being shaped into a continuous sheath, the film F may optionally be coated, preferably in the location of an already-embossed pattern 15 , on the face 14 of the film that corresponds to the hollow sides of the embossing and/or on the opposite face, in a technical agent 16 that is put into a registered position that encourages retention of the relief during shrinkage of the wall of the film.
  • a specific station (not shown) is provided for positioning the insert(s) upstream or downstream from the embossing station, optionally together with a station for applying a screen to the continuously traveling inserts (e.g. comprising rollers having a laser-etched outside face for imprinting microgrooves in a predetermined pattern), in particular for the purpose of implementing multiple-diffraction screens of the lens type.
  • the method is implemented continuously on the film while it travels flat, prior to said film being shaped into a continuous sheath G.
  • a screen or the like to be applied to the film in the locations of at least some of the embossed patterns in relief.
  • Such screening e.g. of the lens type, can be implemented in the embossing station, with the work taking place on the face opposite from the face that co-operated with the embossing tool.
  • the continuous sheath G can be stored in the flat state by being wound onto a reel B, the sleeves 11 that are used for packaging articles then being obtained by cutting segments from said continuous sheath.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Wrappers (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Packages (AREA)
  • Gloves (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Bag Frames (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)
US10/517,959 2002-06-19 2003-06-13 Envelope for packaging object(s)made of shrinkable material with raised design Abandoned US20050229542A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US11/766,910 US7837818B2 (en) 2002-06-19 2007-06-22 Article-packaging wrapper of heat-shrink material with a pattern in relief

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR02/07550 2002-06-19
FR0207550A FR2841224B1 (fr) 2002-06-19 2002-06-19 Enveloppe d'emballage d'objet(s) en materiau thermoretractable a motif en relief
PCT/FR2003/001788 WO2004000684A1 (fr) 2002-06-19 2003-06-13 Enveloppe d'emballage d'objet(s) en materiau thermoretractable a motif en relief

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US20050258131A1 (en) * 2004-05-21 2005-11-24 Moser Jerry W Easily opened tamper evident shrink band
US20060157369A1 (en) * 2004-12-30 2006-07-20 Sleever International Company Method of packaging articles by means of heat-shrink sleeves, and an associated packaging wrapper

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JP5875458B2 (ja) * 2012-05-02 2016-03-02 東京彫刻工業株式会社 凸文字や凸図柄を薄板の金属、紙に刻印する方法
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EP3037253A1 (de) * 2014-12-22 2016-06-29 Boegli-Gravures S.A. Mikro-Prägen
EP3424740B1 (de) * 2017-07-05 2022-06-15 The Procter & Gamble Company Verfahren zum drucken von mikrooptischen 3d-bildern auf verpackungssystemen
FR3087991B1 (fr) 2018-10-29 2022-12-09 Commissariat Energie Atomique Preparation d'un systeme de chauffage a partir d'un substrat thermoretractable
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* Cited by examiner, † Cited by third party
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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
US20050258131A1 (en) * 2004-05-21 2005-11-24 Moser Jerry W Easily opened tamper evident shrink band
US7596927B2 (en) * 2004-05-21 2009-10-06 Moser Jerry W Method of tamper proofing a container assembly with an easily opened tamper evident shrink band
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US7406811B2 (en) * 2004-12-30 2008-08-05 Sleever International Company Method of packaging articles by means of heat-shrink sleeves

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JP4129001B2 (ja) 2008-07-30
AU2003260590B2 (en) 2006-12-14
JP2005529814A (ja) 2005-10-06
CA2489525A1 (fr) 2003-12-31
FR2841224B1 (fr) 2004-08-06
DK1513738T3 (da) 2007-07-02
BR0311808A (pt) 2005-03-29
RU2005101081A (ru) 2005-09-10
CA2489525C (fr) 2009-10-20
DE60312161D1 (de) 2007-04-12
ATE355231T1 (de) 2006-03-15
RU2285646C2 (ru) 2006-10-20
US7837818B2 (en) 2010-11-23
CN100360383C (zh) 2008-01-09
EP1513738B1 (de) 2007-02-28
ES2281664T3 (es) 2007-10-01
FR2841224A1 (fr) 2003-12-26
US20070240805A1 (en) 2007-10-18
PT1513738E (pt) 2007-05-31
EP1513738A1 (de) 2005-03-16
MXPA04012596A (es) 2005-03-23
AU2003260590A1 (en) 2004-01-06
CN1662426A (zh) 2005-08-31
CY1107624T1 (el) 2013-03-13
WO2004000684A1 (fr) 2003-12-31
SI1513738T1 (sl) 2007-08-31
BR0311808B1 (pt) 2012-09-04
DE60312161T2 (de) 2007-11-29

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