EP0742778B1 - Skin package - Google Patents
Skin package Download PDFInfo
- Publication number
- EP0742778B1 EP0742778B1 EP95908211A EP95908211A EP0742778B1 EP 0742778 B1 EP0742778 B1 EP 0742778B1 EP 95908211 A EP95908211 A EP 95908211A EP 95908211 A EP95908211 A EP 95908211A EP 0742778 B1 EP0742778 B1 EP 0742778B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- film
- backing material
- adhesive
- package
- package according
- 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.)
- Expired - Lifetime
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
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/38—Packaging materials of special type or form
- B65D65/46—Applications of disintegrable, dissolvable or edible materials
-
- 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
- B65D75/28—Articles or materials wholly enclosed in composite wrappers, i.e. wrappers formed by associating or interconnecting two or more sheets or blanks
- B65D75/30—Articles or materials enclosed between two opposed sheets or blanks having their margins united, e.g. by pressure-sensitive adhesive, crimping, heat-sealing, or welding
- B65D75/305—Skin packages
Definitions
- This invention relates to a new package and a process for preparing the new package.
- Skin packaging is a cheap, effective way of packaging a whole variety of goods, in particular where immediate point of sale is required.
- the packaging is convenient, relatively low in cost and typically tamper-proof, since in most cases it is immediately evident if the product has been tampered with.
- Many self-service stores such as supermarkets use this type of packaging to great extent.
- Skin packaging involves the heating of a film to the point at which the surface of the film becomes hot and malleable.
- the heated film is drawn over an article to be contained, which rests on a board which is often coated with a heat sealable lacquer or varnish. Beneath the board air is drawn through its fibres, causing the heated malleable film sitting on the board to be pulled under pressure, forming a tight skin bonded to the surface above.
- the film, through heat and film distortion, is pulled over the article.
- the film follows the contours of the article, causing a semi-rigid encapsulation of the article. This state is very desirable when packaging awkwardly shaped articles, for example screws, nuts and bolts. The product is thus held firmly in place.
- the skin film used is predominately made from "Surlyn" resin, a registered trade mark, which comprises an ionomer (ionomers are copolymers of ethylene and methacrylic acid which have been ionically cross-linked). Such films may not be readily recycled. For example a discarded package comprising "Surlyn” film may not be easily re-pulped.
- the invention seeks to provide a package which can be recycled.
- the invention seeks to provide a package which is not static, for example it does not attract dust.
- the invention provides a package comprising a backing material having a first surface and a film of water soluble or water dispersible material having a sealing surface, portions of the first surface of the backing material and said sealing surface of said film being sealed with at least one article enclosed therebetween, characterised in that the backing material comprises a porous board.
- the backing material is substantially planar.
- the backing material preferably comprises a chipboard or, more preferably, cardboard. It will be understood that the surface of the board may be pre-treated to avoid undue absorption of adhesive, where present.
- Suitable water soluble or dispersible materials include polyethylene oxide; more preferably a polyvinyl alcohol film is used.
- a polyvinyl alcohol film may be a partially or fully hydrolysed or alcoholised e.g. 40 - 99% preferably 70 - 92% hydrolysed or alcoholised, polyvinyl alcohol film.
- the polyvinyl alcohol film may in fact be a co-polymer, with a second polymer replacing residual polyvinyl actetate.
- the film may be a cast film or, more preferably, a blown or extruded film.
- the polyvinyl alcohol film may be unoriented, mono-axially oriented or bi-axially oriented.
- the film may be hot water soluble (e.g. it dissolves in water at a temperature from 40 to 100°C, preferably 40 to 50°C) or preferably cold water soluble.
- the water soluble or dispersible material may be monolayered or in the form of a laminate, generally of two layers of different or preferably the same material. Typically the laminates will consist of two layers of thickness from 10 to 500 microns.
- the film water soluble or water dispersible material which is sealed to the coating is typically of a thickness from 10 to 500 microns, preferably 20 to 150 microns, although it will be understood that the thickness will vary according to the article to be packaged and the film used.
- the first surface of the backing layer and the sealing surface of the film may be sealed together in a number of ways.
- One preferred method is by forming a heat seal between the first surface of the backing material and the sealing surface of the film.
- the first surface of the backing material must comprise a heat sealable material, e.g. polyvinyl alcohol or a paper material.
- At least one of the first surface of the backing layer and the sealing surface of the film is coated with an adhesive, and portions of the first surface of the backing material are sealed to portions of the sealing surface of the film.
- the adhesive coating preferably has a thickness from 1 to 10 microns, preferably from 1 to 5 microns.
- the adhesive is preferably a thermally activated adhesive, water soluble or water dispersible adhesives being particularly preferred.
- the adhesive comprises a polymer.
- the adhesive preferably comprises polyethylene oxide or polyvinyl alcohol, polyvinyl alcohol being preferred. It is also preferred that the adhesive comprises the same material as the water soluble or dispersible material having the sealing surface, since they will be thermally active within the same temperature range as each other. Where the adhesive is thermally activated and comprises a different material from the water soluble or dispersible material having the sealing surface, preferably the film becomes malleable in the temperature range at which the adhesive is thermally activated.
- the adhesive may be provided on the film. This may be used for example where the article to be packaged is to be held in place and the adhesive and film may be readily peeled away from the surface of the article, for example metallic objects.
- the backing material is provided with a region uncoated with adhesive between the article and the perimeter of the backing material, preferably running from where the package is to be opened (for example running from a pull tab). This offers advantages to the purchaser of the package, for example when releasing the contents of the package, by making the film more easy to peel.
- a process for the preparation of a package according to the invention comprising placing at least one article to be packaged on the first surface of a backing material, positioning a film of water soluble or water dispersible material over the first surface of the backing material, and sealing portions of the film to portions of the first surface of the backing material.
- the film is heated before being sealed to the surface of the backing material.
- the film is thermoformed before being sealed to the first surface of the backing material, typically at a temperature from 100 to 120°C.
- the backing material is generally placed under suction to draw the film to the surface, and for this reason the backing material may be provided with perforations to increase the suction.
- sealing may be accomplished using an adhesive, most preferably a water soluble or water dispersible adhesive.
- the adhesive is applied to at least one of the sealing layers of the film and the first surface of the backing material.
- the backing material is preferably coated with the adhesive prior to being sealed to the film.
- the coating of water soluble or water dispersible adhesive is preferably applied to the backing material by a gravure process.
- the sealing may be accomplished using a heat seal.
- a preferred way of providing the heat seal involves using a heated platten moving vertically and squeezing the surfaces to be sealed together under constant pressure and heat sealing around the perimeter of the article on the backing material.
- the dwell time of the platten in contact with the sealing surfaces will vary according to type of materials used and their thickness.
- the sealing temperature range is generally from 120 to 200°C, more preferably from 150 to 175°C; and the dwell time is from 0.1 to 5 seconds, preferably from 0.5 to 1 second.
- the package of the invention may be used to contain many different types of article. Some typical examples can be found in the packaging of automotive spares and spare parts and fittings across industry segments. Skin packaging of electronic circuit boards and electronic components sensitive to electro-static discharge. This allows visual identification of components in handling without the risk of damage to the component. Since the packaging is recyclable, the invention could be used to hold powder type chemicals for concrete additives, the packaging of explosive components, the packaging of military ammunition to prevent corrosion, to resolve static problems and to permit easy disposal of the packaging, as both components of the skin packaging are pulpable. It is also well suited to packaging solid detergent chemicals, for example toilet disinfectants.
- a manually operated Parnell SP4 Mark 5 Skin Packaging machine is used, which is capable of carrying boards of 425 mm by 275mm.
- the heaters used are infra-red radiant lamps provided 100mm above the surface of the board.
- a white lined chipboard of 700 to 800 micron thickness is placed on the surface of the machine.
- the board is coated with "Ad coat" SK528 polymeric adhesive (10.6g per square metre, giving a thickness of approximately 4 microns) and when dry the article to be packaged (in this case a paper clip) is placed on the board.
- Solublon KD a 100 micron thick laminated film (two layers, each of 50 micron thickness), is placed manually over the top of the board and article, stretched fairly tightly, the heaters turned on and the film is heated to approximately 100°C. The board and article are raised to the heated film and suction applied to the underside of the board. This results in a skin packaged board.
- Other films which may be used include "Vinex 2144", a monolayered polyvinyl alcohol film having a thickness of for example 75 or 125 microns; or "Solublon KC” a monolayered polyvinyl alcohol film having a thickness of for example 100 microns.
- Figure I shows a package 1 containing an article 2 (in this case a pair of paper clips) which are mounted on a planar cardboard sheet 3.
- the board is provided with a cut-away portion 4 which allows the package to be hung on a display plinth.
- the package has a pull tab 5 to ease opening of the package as described below.
- the surface of the board bearing the article 2 is covered with a polyvinyl alcohol film 6 which is sealed to the board by an adhesive 7 ( Figure II, thickness not shown to scale) thus containing the article 2.
- the pull tab 5 in fact forms part of the film 6 and extends beyond the cardboard 3.
- the board 3 is provided with a region 8 which is not coated with polymeric adhesive which is the area within the dotted lines in Figure I.
- the discarded packaging material may be recycled without any difficulties, as the film 6 may be readily re-pulped.
- Figures III and IV show another package according to the invention 9, holding an article 10 (in this case a duck-shaped toilet disinfectant) which is mounted on a substantially planar backing layer 11.
- the package is provided with a hanging hole 12 which allows it to be held for example on a display plinth.
- the package includes a peelable region 13 to allow easy opening of the package and removal of the article 10.
- the package comprises a planar backing layer 11, in this case made of polyvinyl alcohol and a film 14 which are sealed together in this case with a heat seal.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Packages (AREA)
- Cosmetics (AREA)
- Wrappers (AREA)
- Thermotherapy And Cooling Therapy Devices (AREA)
- Materials For Medical Uses (AREA)
- Medicinal Preparation (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
Abstract
Description
Claims (17)
- A package (1) comprising a backing material (3) having a first surface and a film of water soluble or water dispersible material (6) having a sealing surface, portions of said first surface of the backing material (3) and said sealing surface of the film (6) being sealed with at least one article (2) enclosed therebetween, characterized in that the backing material (3) comprises a porous board.
- A package according to claim 1 wherein the backing material is substantially planar.
- A package according to claim 1 or 2, wherein the backing material is provided with perforations.
- A package according to claim 1, 2 or 3 wherein the backing material comprises cardboard.
- A package according to claim 1, 2, 3 or 4 wherein the water soluble or dispersible material comprises polyvinyl alcohol.
- A package according to any one of claims 1 to 5 wherein at least one of said first surface and said sealing surface is coated with an adhesive, portions of the first surface of the backing material and said sealing surface of the film being sealed by said adhesive.
- A package according to claim 6 wherein the adhesive has a thickness from 1 micron to 10 microns.
- A package according to claim 6 or 7 wherein the adhesive is water soluble or water dispersible.
- A package according to any one of claims 6 to 8 wherein the backing material is provided with a region uncoated with the adhesive between the article and the perimeter of the backing material.
- A package according to any one of claims 1 to 5 wherein portions of the first surface of the backing material and the sealing surface of the film are sealed by heat sealing.
- A package according to any one of claims 1 to 10 wherein the film has a thickness of from 10 to 500 microns.
- A process for the preparation of a package according to any one of claims 1 to 11 which comprises placing at least one article to be packaged on the first surface of a backing material, positioning a film of water soluble or water dispersible material over the first surface of the backing material, and sealing portions of the film to portions of the first surface of the backing material.
- A process according to claim 12 wherein the film is heated before being sealed to the first surface of the backing material.
- A process according to claim 12 or 13 wherein the film is thermoformed before being sealed to the first surface of the backing material.
- A process according to claim 12, 13 or 14 wherein portions of the first surface of the backing material and the sealing surface of the film are sealed together using an adhesive.
- A process according to claim 15 wherein the adhesive is applied to the backing material by a gravure process.
- A process according to claim 12, 13 or 14 wherein portions of the first surface of the backing material and the sealing surface of the film are sealed together by a heat seal.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9401893A GB9401893D0 (en) | 1994-02-01 | 1994-02-01 | New packages |
GB9401893 | 1994-02-01 | ||
PCT/EP1995/000292 WO1995021105A1 (en) | 1994-02-01 | 1995-01-27 | Skin package |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0742778A1 EP0742778A1 (en) | 1996-11-20 |
EP0742778B1 true EP0742778B1 (en) | 1998-08-19 |
Family
ID=10749670
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95908211A Expired - Lifetime EP0742778B1 (en) | 1994-02-01 | 1995-01-27 | Skin package |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP0742778B1 (en) |
JP (1) | JPH09508339A (en) |
AT (1) | ATE169881T1 (en) |
AU (1) | AU694478B2 (en) |
DE (1) | DE69504177T2 (en) |
DK (1) | DK0742778T3 (en) |
GB (1) | GB9401893D0 (en) |
WO (1) | WO1995021105A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH691279A5 (en) * | 1995-10-16 | 2001-06-29 | Soremartec Sa | food product packaging. |
BE1009995A5 (en) * | 1996-01-11 | 1997-11-04 | Techy Int Sa | Using a stretch film and bonded for sealing of a presentation of packaging. |
EP0964822B1 (en) * | 1997-01-23 | 2002-04-03 | Cryovac, Inc. | Blister-type package |
WO2001023272A1 (en) * | 1999-09-25 | 2001-04-05 | Arthur W. Clowes Limited | Blister or skin package |
DE202018103398U1 (en) * | 2018-01-23 | 2018-06-22 | Van Genechten Packaging N.V. | packaging |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB922317A (en) * | 1958-05-05 | 1963-03-27 | Associated Fumigators Ltd | Improvements in or relating to means for packaging pesticides |
GB1091386A (en) * | 1965-10-23 | 1967-11-15 | Stanley Works Great Britiain L | Improvements relating to skin packaging |
US4544693A (en) * | 1984-01-03 | 1985-10-01 | Monsanto Company | Water-soluble film |
FR2593152B1 (en) * | 1986-01-22 | 1988-12-23 | Adir | WATERPROOF PACKAGING IN THE FORM OF ALVEOLAR PLATES ALLOWING FOR GAS EXCHANGES BETWEEN THE ALVEOLES. |
US4684025A (en) * | 1986-01-30 | 1987-08-04 | The Procter & Gamble Company | Shaped thermoformed flexible film container for granular products and method and apparatus for making the same |
GB8607934D0 (en) * | 1986-04-01 | 1986-05-08 | Ball A C | Packaging |
GB8612706D0 (en) * | 1986-05-23 | 1986-07-02 | Unilever Plc | Sealable container |
JPH0736834B2 (en) * | 1987-03-06 | 1995-04-26 | ベーカー ノートン ファーマシューティカルズ インコーポレイテッド | Device for administering pharmaceuticals |
US4886690A (en) * | 1987-12-21 | 1989-12-12 | W. R. Grace & Co. | Peelable barrier film for vacuum skin packages and the like |
US4956212A (en) * | 1988-11-17 | 1990-09-11 | W. R. Grace & Co. -Conn. | Peelable barrier film for vacuum skin packages and the like |
DE4028652A1 (en) * | 1990-09-10 | 1992-04-09 | Flor Hein Juergen Dipl Betrieb | Multipart disposable packaging assembly - is made from thermoplastics material based on gelatine |
BR9206199A (en) * | 1991-06-24 | 1995-01-10 | Minnesota Mining & Mfg | Process for fixing a pulpable article, repellable fixing device, pressure-sensitive adhesive tape, repellable strap, and device combination |
GB9121984D0 (en) * | 1991-10-16 | 1991-11-27 | Rhone Poulenc Agriculture | Sealed package |
NZ244818A (en) * | 1991-10-24 | 1994-09-27 | Rhone Poulenc Agrochimie | Package containing a toxic composition which comprises two compartments formed by two sheets of water-soluble dispersible material by means of a water-soluble/dispersible heat seal and a third sheet |
-
1994
- 1994-02-01 GB GB9401893A patent/GB9401893D0/en active Pending
-
1995
- 1995-01-27 DE DE69504177T patent/DE69504177T2/en not_active Expired - Fee Related
- 1995-01-27 AU AU16624/95A patent/AU694478B2/en not_active Ceased
- 1995-01-27 WO PCT/EP1995/000292 patent/WO1995021105A1/en active IP Right Grant
- 1995-01-27 JP JP7520364A patent/JPH09508339A/en active Pending
- 1995-01-27 DK DK95908211T patent/DK0742778T3/en active
- 1995-01-27 AT AT95908211T patent/ATE169881T1/en active
- 1995-01-27 EP EP95908211A patent/EP0742778B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
ATE169881T1 (en) | 1998-09-15 |
EP0742778A1 (en) | 1996-11-20 |
JPH09508339A (en) | 1997-08-26 |
WO1995021105A1 (en) | 1995-08-10 |
DE69504177D1 (en) | 1998-09-24 |
AU694478B2 (en) | 1998-07-23 |
DE69504177T2 (en) | 1999-02-11 |
DK0742778T3 (en) | 1999-05-25 |
GB9401893D0 (en) | 1994-03-30 |
AU1662495A (en) | 1995-08-21 |
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