EP0259068A1 - Récipients - Google Patents
Récipients Download PDFInfo
- Publication number
- EP0259068A1 EP0259068A1 EP87307368A EP87307368A EP0259068A1 EP 0259068 A1 EP0259068 A1 EP 0259068A1 EP 87307368 A EP87307368 A EP 87307368A EP 87307368 A EP87307368 A EP 87307368A EP 0259068 A1 EP0259068 A1 EP 0259068A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- container
- adhesive
- opening
- dye
- flap portion
- 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- Withdrawn
Links
- 239000000853 adhesive Substances 0.000 claims abstract description 31
- 230000001070 adhesive effect Effects 0.000 claims abstract description 31
- 239000000463 material Substances 0.000 claims abstract description 15
- 239000012790 adhesive layer Substances 0.000 claims abstract description 13
- 239000002904 solvent Substances 0.000 claims abstract description 11
- 238000010186 staining Methods 0.000 claims abstract description 5
- 238000004090 dissolution Methods 0.000 claims abstract description 3
- 230000000873 masking effect Effects 0.000 claims description 12
- 229920001169 thermoplastic Polymers 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 239000010410 layer Substances 0.000 abstract description 7
- 239000004831 Hot glue Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000011111 cardboard Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
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
- B65D33/00—Details of, or accessories for, sacks or bags
- B65D33/16—End- or aperture-closing arrangements or devices
- B65D33/34—End- or aperture-closing arrangements or devices with special means for indicating unauthorised opening
Definitions
- This invention relates to containers and is concerned with containers which exhibit a visible indication if an attempt has been made to gain access to the contents of the container.
- a container formed of sheet material and having an opening to enable access to be gained to the interior of the container, the container including a flap portion and adhesive for adhering the flap portion to another portion of the container to close the opening, said adhesive being associated with a solvent-soluble dye whereby an attempt to gain access to the interior of the closed container by treating the adhesive with such a solvent results in dissolution of the dye and the resultant dye solution causes staining which makes it visibly apparent that said attempt has been made.
- Any suitable adhesive such as a hot melt adhesive or a solvent soluble adhesive may be used.
- the dye is present in an amount which is effective to produce a dye solution which causes a visibly apparent stain to be produced on the container.
- the dye is incorporated in the adhesive.
- the adhesive may be coated onto a masking tape which has been treated with a release agent and which is adhered to one of said portions by the adhesive. In this case, in use the masking tape is removed to expose the adhesive and the portions are then superposed so that they become adhered together by means of the adhesive.
- adhesive may be provided on both of the portions in order to improve the adhesive bond. In this case, both adhesive layers may be associated with a solvent soluble dye for the purpose above specified. Alternatively, it may be sufficient for one only of the adhesive layers to be so associated with the dye.
- neither layer may be associated with such a dye since it is a further object of the present invention to provide a container having a flap portion to be adhered to another portion to close the container wherein the adhesive bond between the portions is improved.
- a second aspect of the present invention provides a container formed of sheet material and having an opening to enable access to be gained to the interior of the container, the container including a flap portion carrying a first adhesive layer and another portion carrying a second adhesive layer, the arrangement being such that the flap portion may be adhered to said other portion to close the opening by means of said first and second adhesive layers.
- the container may be formed by superimposing portions of the sheet material and joining the same around their edges. If desired, security printing or coded seals may be provided at the edges to make it evident if access to the container has been gained by cutting the edges and subsequently resealing them. Similarly, security printing may be provided in the vicinity of the opening of the container.
- any suitable sheet material may be used to form the container such as paper, cardboard, thermoplastic plastics film, and combinations of the same.
- the container is useful in any fields where tamper evident containers are needed such as in banking establishments, prison establishments, retailing, hospitals, examining boards, forensic laboratories, government departments, and the like.
- the container is in the form of a bag formed of flexible thermoplastic plastics material such as polyethylene.
- the bag is produced by folding longitudinally a continuous length of the thermoplastic plastics material (after it has been optionally printed as appropriate), into a J-form wherein it includes a first portion 1 folded longitudinally at 2 so as to be superposed on part of a second portion 3 so as to leave a flap portion 4 exposed (Fig. 3).
- the first portion 1 is heat sealed to the second portion 3 by a longitudinally extending heat seal denoted by reference numeral 5 (Fig. 4).
- a longitudinally extending region of the flap portion 4, which region is generally parallel to the heat seal 5, is subjected to a corona discharge to improve its adhesion characteristics and three longitudinally extending lines of perforations 6 are provided in that region (Fig. 5).
- a masking tape 7 formed of a base film of thermoplastic plastics material and coated with a layer of a silicone resin release agent is then coated with a composition 8 comprising a hot melt adhesive and a solvent soluble dye.
- the adhesive may be a synthetic rubber based pressure sensitive hot melt adhesive of the type known under the designation 089-2505 and marketed by National Adhesives and Resins Limited. This is a pale beige odourless material of 100% solids content. It has a viscosity (Brookfield Thermosel) at 120°C of about 63000 cps and its viscosity at 200°C is . about 3500 cps.
- the dye may be of the type known as Kenawax Blue AS marketed by Durham Chemicals Limited of Bradford and it may constitute about 2% by volume of the composition.
- the composition 8 may be applied at a temperature of from about 150°C to 180°C to the masking tape 7 by means of, for example, a hot melt slot coater.
- the thus coated masking tape is then adhered to the perforated region of the flap portion 4 which had been treated by the corona discharge so that it adheres thereto by means of the composition layer 8 (Fig.6). Thereafter, the first portion 1 is provided with a longitudinally extending cut 9 and this cut 9 serves as the opening to the container proper. Also, a further longitudinal perforation 10 is provided in the flap portion 4 equidistant between the heat seal 5 and the masking tape 7 (Fig.7).
- the continuous length of film material is then cut transversely using a double heat sealing device comprising two pairs of heat sealing jaws between which is located a cutting blade so that the material is cut into adjacent transverse portions wherein each of the transverse portions has heat sealed edges 12.
- a double heat sealing device comprising two pairs of heat sealing jaws between which is located a cutting blade so that the material is cut into adjacent transverse portions wherein each of the transverse portions has heat sealed edges 12.
- Each of these transverse portions constitutes a bag and if desired, each transverse portion may be given a sequential number for security purposes.
- the inner marginal area of the bag adjacent to heat seals 12 may be provided with security printing i.e. printed characters very close to the seals 12 so that any attempt to gain access to the interior 11 by cutting off the seal 12 and subsequently resealing them will be immediately apparent.
- FIG 8 there is shown an exaggerated section through a bag according to a second aspect of the invention wherein parts corresponding to parts of Figures 1 to 7 are denoted by like reference numerals.
- the first portion 1 is not heat sealed to the second portion 3 so that access to the interior 11 is gained through a conventional mouth formed between first and second portions 1 and 3.
- masking tape carrying adhesive composition 8 is applied to the flap portion 4 in the same way as in the previous embodiment.
- a similar masking tape carrying an adhesive composition 8 ⁇ is applied to the first portion 1 so that when the masking tapes are removed and the bag is closed by folding over the flap portion 4 the two adhesive layers 8 and 8 ⁇ are superposed and adhere together. Because of the double layer of adhesive, a strong bond is produced between portions 1 and 4.
- any attempt to use a solvent to dissolve the adhesive composition 8 would cause exudation of dye and resultant staining.
- the dye may be omitted. Although this may mean that an attempt to open the bag by applying a solvent may not be detected, the bond between the first portion 1 and the flap portion 4 will be equally as strong.
- the second tape (7 ⁇ ) carrying masking composition 8 ⁇ will preferably be of reduced width, compared to tape 7 and will be located adjacent to the opening line 9 on the side remote from the heat seal 5 (as shown by dotted lines in Figure 7).
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bag Frames (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB868620636A GB8620636D0 (en) | 1986-08-26 | 1986-08-26 | Containers |
| GB8620636 | 1986-08-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP0259068A1 true EP0259068A1 (fr) | 1988-03-09 |
Family
ID=10603224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP87307368A Withdrawn EP0259068A1 (fr) | 1986-08-26 | 1987-08-20 | Récipients |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0259068A1 (fr) |
| GB (1) | GB8620636D0 (fr) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0393841A1 (fr) * | 1989-04-18 | 1990-10-24 | Trigon Industries Limited | Enveloppe inviolable |
| EP0396428A1 (fr) * | 1989-05-04 | 1990-11-07 | Trigon Cambridge Limited | Sac avec indication d'ouverture non autorisée |
| GB2265883B (en) * | 1989-06-08 | 1994-02-16 | Mcg Venus Packaging Limited | A bag |
| WO2000050310A1 (fr) * | 1999-02-26 | 2000-08-31 | Antony Brian Jennings | Temoin d'effraction pour sac |
| US6190043B1 (en) | 1999-11-23 | 2001-02-20 | Jonathan Diplock | Front opening plastic secure package with false panel |
| US6270256B1 (en) * | 1997-04-07 | 2001-08-07 | Sealed Air Corporation | Tamper evident bag |
| EP1167230A1 (fr) * | 2000-06-28 | 2002-01-02 | Sealed Air Corporation (US) | Récipient pour preuves médico-légales |
| US6431752B1 (en) | 1999-11-23 | 2002-08-13 | Jonathan Diplock | Plastic coin transport bag |
| CN110329649A (zh) * | 2019-05-24 | 2019-10-15 | 阳江市杰斐包装材料有限公司 | 钞票包装袋的封口方式 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2032882A (en) * | 1978-09-29 | 1980-05-14 | Franko Plastics Ltd | Bags |
| GB2123791A (en) * | 1982-06-25 | 1984-02-08 | Drg Inc | Tamper resistance security package |
| EP0105581A2 (fr) * | 1982-10-04 | 1984-04-18 | Decoflex Limited | Sacs |
-
1986
- 1986-08-26 GB GB868620636A patent/GB8620636D0/en active Pending
-
1987
- 1987-08-20 EP EP87307368A patent/EP0259068A1/fr not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2032882A (en) * | 1978-09-29 | 1980-05-14 | Franko Plastics Ltd | Bags |
| GB2123791A (en) * | 1982-06-25 | 1984-02-08 | Drg Inc | Tamper resistance security package |
| EP0105581A2 (fr) * | 1982-10-04 | 1984-04-18 | Decoflex Limited | Sacs |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0393841A1 (fr) * | 1989-04-18 | 1990-10-24 | Trigon Industries Limited | Enveloppe inviolable |
| EP0396428A1 (fr) * | 1989-05-04 | 1990-11-07 | Trigon Cambridge Limited | Sac avec indication d'ouverture non autorisée |
| GB2265883B (en) * | 1989-06-08 | 1994-02-16 | Mcg Venus Packaging Limited | A bag |
| US6270256B1 (en) * | 1997-04-07 | 2001-08-07 | Sealed Air Corporation | Tamper evident bag |
| WO2000050310A1 (fr) * | 1999-02-26 | 2000-08-31 | Antony Brian Jennings | Temoin d'effraction pour sac |
| US6190043B1 (en) | 1999-11-23 | 2001-02-20 | Jonathan Diplock | Front opening plastic secure package with false panel |
| US6431752B1 (en) | 1999-11-23 | 2002-08-13 | Jonathan Diplock | Plastic coin transport bag |
| US6886980B1 (en) | 1999-11-23 | 2005-05-03 | Jonathan Diplock | Plastic coin bag |
| EP1167230A1 (fr) * | 2000-06-28 | 2002-01-02 | Sealed Air Corporation (US) | Récipient pour preuves médico-légales |
| US6632403B1 (en) | 2000-06-28 | 2003-10-14 | Sealed Air Corporation (Us) | Forsenic evidence container |
| CN110329649A (zh) * | 2019-05-24 | 2019-10-15 | 阳江市杰斐包装材料有限公司 | 钞票包装袋的封口方式 |
Also Published As
| Publication number | Publication date |
|---|---|
| GB8620636D0 (en) | 1986-10-01 |
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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): AT BE CH DE ES FR GB GR IT LI LU NL SE |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 19880910 |
|
| RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: WATSON, DAVID |