CA1267384A - Security bag - Google Patents
Security bagInfo
- Publication number
- CA1267384A CA1267384A CA000496038A CA496038A CA1267384A CA 1267384 A CA1267384 A CA 1267384A CA 000496038 A CA000496038 A CA 000496038A CA 496038 A CA496038 A CA 496038A CA 1267384 A CA1267384 A CA 1267384A
- Authority
- CA
- Canada
- Prior art keywords
- flap
- bag
- lip
- adhesive
- bond
- 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 - Fee Related
Links
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
Abstract
ABSTRACT
A security bag comprises front and rear panels in which the front panel is extended to provide a flap adjacent an opening of the bag and the rear panel is provided with a lip also adjacent the opening which unites with the rear panel by means of adhesive.When the flap is folded onto the rear panel and is united therewith by the adhesive, the flap also unites with the lip by means of the adhesive. Any attempt to open the bag by lifting the flap from the rear panel is visually apparent.
A security bag comprises front and rear panels in which the front panel is extended to provide a flap adjacent an opening of the bag and the rear panel is provided with a lip also adjacent the opening which unites with the rear panel by means of adhesive.When the flap is folded onto the rear panel and is united therewith by the adhesive, the flap also unites with the lip by means of the adhesive. Any attempt to open the bag by lifting the flap from the rear panel is visually apparent.
Description
~ Z!~ 7 ~ ~
This invention relates to a security bag.
It is known to provide security bags of synthetic plastics film material each comprising front and rear panels one of which has a flap which is foldable onto an outer surface of the other panel to close the bag and in which there i5 provided pressure sensitive contact adhesive for uniting the folded flap with the adjacent surface of the other panel.
It has been found that by carefully applying a solvent under the flap when bonded to the adjacent surface, the effect of the adhesive can be neutralised permitting the flap to be separated from the adjacent surface.
The bags are therefore not tamper evident because, after having applied solvent to the adhesive of a bag to nullify the effect thereof and thereby open the bag, contents may be removed and the flap re-united with the opposite facing surface of the bag by means of fresh pressure sensitive adhesive subsequently applied to the flap and/or the portion of the surface subsequently covered by the flap.
It is desirable, therefore, to provide a bag which cannot be opened without severing the material of the bag.
According to the present invention, there is provided a bag comprising front and rear panels one of which has an outwardly turned lip extending adjacent an opening of the bag and the other of which has a flap, said flap being provided with a weakened portion and being foldable onto the lip, a first portion of pressure sensitive adhesive for uniting the flap to the lip and to an outer surface of the panel having the lip and a second portion of pressure sensitive adhesive for C JJ:lC~
~2~. 3~
uniting the lip with said outer surface wherein the adhesive bond between the flap and the lip is greater than the adhesive bond between the lip and the said outer surface so that when the flap is peeled from the said outer surface, the bond between the flap and the lip provides resistance to a solvent which effects severance of the bond between the lip and the said outer surface and the lip remains united with the flap.
The material of the bag may be adapted to receive indicia.
The material may be adapted to receive indicia by having located thereon an indicia receiving zone extending across the weakened portion.
The material may be a co-extruded thermoplastic material a surface of which is capable of receiving indicia thereon.
The flap may be a component additional to material comprising the panels.
A surface of the material may be treated with a substance for receiving a component having a pressure sensitive adhesive thereon for uniting with the surface.
Following is a description, by way of example only and with reference to the accompanying drawings, of one method of carrying the invention into effect.
In the drawings.-Figure 1 is a diagrammatic perspective view of therear of one embodiment of a bag in accordance with the present invention, the bag being in an open unused condition, JJ:~ ~ 2 Figure 2 is a perspective view of the front of the bag when in an open unused condition, and Figure 3 is a perspective view of the rear of the bag when in a closed condition.
Referring to the drawings, there is shown a bag 10 comprising a sheet of synthetic plastics film material which is folded at 11 to provide a front panel 12 and a rear panel 13, the panels being welded one to another in spaced parallel side welds 14, 15, extending at right angles to the fold 11.
The material is folded such that the front panel extends beyond the rear panel in a longitudinal direction of the side welds 14, 15 to provide an extended portion 16, and the material is provided with a pair of spaced parallel rows of slits 17, 18 extending transversely of the extended portion 16 and substantially parallel to the fold 11. The portion extending from the row of slits 18 to an edge of the extended portion 16 remote from the fold 11 defines a tear off strip 19.
A portion of the rear panel 13 remote from the fold 11 is folded outwardly upon itself to provide a transversely extending lip 20 which is united with an outer surface of the rear panel 13 by pressure sensitive contact adhesive 21 extending transversely of the rear panel 13.
The extended portion 16 has applied to a rear surface thereof a strip of pressure sensitive contact adhesive 22 which extends transversely of the extended portion 16 and in a direction from a location adjacent the fold of the lip 20 to a location adjacent the row of slits 18. The adhesive 22 is covered by a backing strip 23, coated with a release substance, JJ:~ 3 B
~2~3~
such as silicon, on a surface thereof which contacts the adhesive 22.
A Pront surface of the extended portion 16 has printed thereon two identical numbers 24, 25 located on opposite sides of the row of slits 18. The front surface of the extended portion 16 also has printed thereon a stripe 26 on which information can be written, the stripe 26 extending across the rows of slits 17, 18.
In use, articles are inserted in the hag 10 by, or under the supervision of, a person authorised to do so. The authorised person signs his or her signature on the stripe 26 so that the signature extends across the rows of slits 17, 18.
The tear off strip 19 is then severed from the remaining portion of the extended portion 16, along the row of slits 18 and the tear off strip 19, bearing a portion of the signature written on the stripe 26, is stored.
The remaining portion of the extended portion 16 extending beyond the lip 20~in a direction away from the fold 11 comprises a flap 27 bearing the adhesive 22 on a rear surface thereof and the backing strip 23 covering the adhesive 22.
The backing strip 23 is peeled from the adhesive 22 on the flap 27 thereby exposing the adhesive 22.
The flap 27 then i5 folded rearwardly onto the lip 20 with a result that the adhesive 22 on the flap 27 unites with the lip 20 whereby the flap 27 is sealed to the lip 20 and to the outer surface of the rear panel 13 thereby effecting closure of the bag 10 and enveloping the contents therein.
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The bag 10 subsequently is opened by severing the material of the bag 10 in a direction substantially parallel and adjacent to the fold 11, as indicated in Figure 3.
The characteristics of the adh~sives 21 and 22 differ one from another such that the bond between the flap 27 and the lip 20 is greater than the bond between the lip 20 and the outer surface of the rear panel 13.
If an attempt is made to open the bag lO by peeling the flap 27 from the outer surface of the rear panel 13 and applying a solvent between the flap 27 and the surface, the solvent may neutralise the bonding effect of the adhesive 21 uniting the lip 20 with the remaining portion of the rear panel 13 but, due to the more effective bond between the flap 27 and the lip 20, the solvent will not break down the adhesive 22.
In consequence, it may be possible, using a solvent, to peel the flap 27 from the outer surface of the rear panel 13 but such action would not result in opening of the bag 10.
Such differential bonding may be achieved using three ply co-extruded plastics film material whereby the surfaces of the flap 27 and the lip 20 which will unite with one another provide a more substantial bond with the adhesive 22 than the opposite Eacing surface of the lip 20 and the rear panel 13 bonded by the adhesive 21. Alternatively, the adhesives 21 and 22 may be different 50 as to provide differential bonding of the respective surfaces.
It will be appreciated that the tear off strip 19 and the stripe 26 provide added security features. The tear off strip 19, in being provided with a number identical with the JJ:~ 5 B
~2~ f 3~
number on the bag, can be traced to identify the authorised person who signed the stripe 26 and removed the tear off strip l9. Furthermore, the fact that a signature is written across the rows of slits 17, 18 not only provides a security feature in that difficulty would be experienced in perfectly realigning portions of a signature in reconstituting the row of slits 17, but also a fraudulently prepared tear off strip 19 is unlikely to be perfectly matched with a bag 10 such that a portion of a signature on the fraudulently prepared tear off strip 19 would correspond with a portion of a signature on the bag lo.
Furthermore, it will be appreciated that the flap 27 having the tear off strip 19 may be an additional component which is united with the front panel 12 by means of adhesive or heat seal. The flap 27 may be of transparent material and the tear off strip 19 may also be of transparent material.
It will also be appreciated that an outer surface of the bag 10 may be treated with a substance for receiving a component, such as a postal stamp, having a pressure sensitive adhesive thereon for uniting with the surface.
JJ: ~ 6 .~
This invention relates to a security bag.
It is known to provide security bags of synthetic plastics film material each comprising front and rear panels one of which has a flap which is foldable onto an outer surface of the other panel to close the bag and in which there i5 provided pressure sensitive contact adhesive for uniting the folded flap with the adjacent surface of the other panel.
It has been found that by carefully applying a solvent under the flap when bonded to the adjacent surface, the effect of the adhesive can be neutralised permitting the flap to be separated from the adjacent surface.
The bags are therefore not tamper evident because, after having applied solvent to the adhesive of a bag to nullify the effect thereof and thereby open the bag, contents may be removed and the flap re-united with the opposite facing surface of the bag by means of fresh pressure sensitive adhesive subsequently applied to the flap and/or the portion of the surface subsequently covered by the flap.
It is desirable, therefore, to provide a bag which cannot be opened without severing the material of the bag.
According to the present invention, there is provided a bag comprising front and rear panels one of which has an outwardly turned lip extending adjacent an opening of the bag and the other of which has a flap, said flap being provided with a weakened portion and being foldable onto the lip, a first portion of pressure sensitive adhesive for uniting the flap to the lip and to an outer surface of the panel having the lip and a second portion of pressure sensitive adhesive for C JJ:lC~
~2~. 3~
uniting the lip with said outer surface wherein the adhesive bond between the flap and the lip is greater than the adhesive bond between the lip and the said outer surface so that when the flap is peeled from the said outer surface, the bond between the flap and the lip provides resistance to a solvent which effects severance of the bond between the lip and the said outer surface and the lip remains united with the flap.
The material of the bag may be adapted to receive indicia.
The material may be adapted to receive indicia by having located thereon an indicia receiving zone extending across the weakened portion.
The material may be a co-extruded thermoplastic material a surface of which is capable of receiving indicia thereon.
The flap may be a component additional to material comprising the panels.
A surface of the material may be treated with a substance for receiving a component having a pressure sensitive adhesive thereon for uniting with the surface.
Following is a description, by way of example only and with reference to the accompanying drawings, of one method of carrying the invention into effect.
In the drawings.-Figure 1 is a diagrammatic perspective view of therear of one embodiment of a bag in accordance with the present invention, the bag being in an open unused condition, JJ:~ ~ 2 Figure 2 is a perspective view of the front of the bag when in an open unused condition, and Figure 3 is a perspective view of the rear of the bag when in a closed condition.
Referring to the drawings, there is shown a bag 10 comprising a sheet of synthetic plastics film material which is folded at 11 to provide a front panel 12 and a rear panel 13, the panels being welded one to another in spaced parallel side welds 14, 15, extending at right angles to the fold 11.
The material is folded such that the front panel extends beyond the rear panel in a longitudinal direction of the side welds 14, 15 to provide an extended portion 16, and the material is provided with a pair of spaced parallel rows of slits 17, 18 extending transversely of the extended portion 16 and substantially parallel to the fold 11. The portion extending from the row of slits 18 to an edge of the extended portion 16 remote from the fold 11 defines a tear off strip 19.
A portion of the rear panel 13 remote from the fold 11 is folded outwardly upon itself to provide a transversely extending lip 20 which is united with an outer surface of the rear panel 13 by pressure sensitive contact adhesive 21 extending transversely of the rear panel 13.
The extended portion 16 has applied to a rear surface thereof a strip of pressure sensitive contact adhesive 22 which extends transversely of the extended portion 16 and in a direction from a location adjacent the fold of the lip 20 to a location adjacent the row of slits 18. The adhesive 22 is covered by a backing strip 23, coated with a release substance, JJ:~ 3 B
~2~3~
such as silicon, on a surface thereof which contacts the adhesive 22.
A Pront surface of the extended portion 16 has printed thereon two identical numbers 24, 25 located on opposite sides of the row of slits 18. The front surface of the extended portion 16 also has printed thereon a stripe 26 on which information can be written, the stripe 26 extending across the rows of slits 17, 18.
In use, articles are inserted in the hag 10 by, or under the supervision of, a person authorised to do so. The authorised person signs his or her signature on the stripe 26 so that the signature extends across the rows of slits 17, 18.
The tear off strip 19 is then severed from the remaining portion of the extended portion 16, along the row of slits 18 and the tear off strip 19, bearing a portion of the signature written on the stripe 26, is stored.
The remaining portion of the extended portion 16 extending beyond the lip 20~in a direction away from the fold 11 comprises a flap 27 bearing the adhesive 22 on a rear surface thereof and the backing strip 23 covering the adhesive 22.
The backing strip 23 is peeled from the adhesive 22 on the flap 27 thereby exposing the adhesive 22.
The flap 27 then i5 folded rearwardly onto the lip 20 with a result that the adhesive 22 on the flap 27 unites with the lip 20 whereby the flap 27 is sealed to the lip 20 and to the outer surface of the rear panel 13 thereby effecting closure of the bag 10 and enveloping the contents therein.
JJ:~ 4 J~
~a2~7;~
The bag 10 subsequently is opened by severing the material of the bag 10 in a direction substantially parallel and adjacent to the fold 11, as indicated in Figure 3.
The characteristics of the adh~sives 21 and 22 differ one from another such that the bond between the flap 27 and the lip 20 is greater than the bond between the lip 20 and the outer surface of the rear panel 13.
If an attempt is made to open the bag lO by peeling the flap 27 from the outer surface of the rear panel 13 and applying a solvent between the flap 27 and the surface, the solvent may neutralise the bonding effect of the adhesive 21 uniting the lip 20 with the remaining portion of the rear panel 13 but, due to the more effective bond between the flap 27 and the lip 20, the solvent will not break down the adhesive 22.
In consequence, it may be possible, using a solvent, to peel the flap 27 from the outer surface of the rear panel 13 but such action would not result in opening of the bag 10.
Such differential bonding may be achieved using three ply co-extruded plastics film material whereby the surfaces of the flap 27 and the lip 20 which will unite with one another provide a more substantial bond with the adhesive 22 than the opposite Eacing surface of the lip 20 and the rear panel 13 bonded by the adhesive 21. Alternatively, the adhesives 21 and 22 may be different 50 as to provide differential bonding of the respective surfaces.
It will be appreciated that the tear off strip 19 and the stripe 26 provide added security features. The tear off strip 19, in being provided with a number identical with the JJ:~ 5 B
~2~ f 3~
number on the bag, can be traced to identify the authorised person who signed the stripe 26 and removed the tear off strip l9. Furthermore, the fact that a signature is written across the rows of slits 17, 18 not only provides a security feature in that difficulty would be experienced in perfectly realigning portions of a signature in reconstituting the row of slits 17, but also a fraudulently prepared tear off strip 19 is unlikely to be perfectly matched with a bag 10 such that a portion of a signature on the fraudulently prepared tear off strip 19 would correspond with a portion of a signature on the bag lo.
Furthermore, it will be appreciated that the flap 27 having the tear off strip 19 may be an additional component which is united with the front panel 12 by means of adhesive or heat seal. The flap 27 may be of transparent material and the tear off strip 19 may also be of transparent material.
It will also be appreciated that an outer surface of the bag 10 may be treated with a substance for receiving a component, such as a postal stamp, having a pressure sensitive adhesive thereon for uniting with the surface.
JJ: ~ 6 .~
Claims (6)
OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A bay comprising front and rear panels one of which has an outwardly turned lip extending adjacent an opening of the bag and the other of which has a flap, said flap being provided with a weakened portion and being foldable onto the lip, a first portion of pressure sensitive adhesive for uniting the flap to the lip and to an outer surface of the panel having the lip and a second portion of pressure sensitive adhesive for uniting the lip with said outer surface wherein the adhesive bond between the flap and the lip is greater than the adhesive bond between the lip and the said outer surface so that when the flap is peeled from the said outer surface the bond between the flap and the lip provides resistance to a solvent which effects severance of the bond between the lip and the said outer surface and the lip remains united with the flap.
2. A bag as claimed in Claim 1 wherein material of the bag is adapted to receive indicia.
3. A bag as claimed in Claim 2 wherein the material is adapted to receive indicia by having located thereon an indicia receiving zone extending across the weakened portion.
4. A bag as claimed in Claim 1 wherein material of the bag is co-extruded thermoplastic material a surface of which is capable of receiving indicia thereon.
5. A bag as claimed Claims 1, 2 or 3 wherein a surface of material of the bag is treated with a substance for receiving a component having a pressure sensitive adhesive thereon for uniting with the surface.
6. A bag as claimed in Claim 1, 2 or 3 wherein the flap is a component additional to material comprising the panels.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8429626 | 1984-11-23 | ||
| GB848429626A GB8429626D0 (en) | 1984-11-23 | 1984-11-23 | Security bag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1267384A true CA1267384A (en) | 1990-04-03 |
Family
ID=10570161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000496038A Expired - Fee Related CA1267384A (en) | 1984-11-23 | 1985-11-22 | Security bag |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP0183489B1 (en) |
| JP (1) | JPS61178847A (en) |
| AT (1) | ATE55345T1 (en) |
| AU (1) | AU588260B2 (en) |
| CA (1) | CA1267384A (en) |
| DE (1) | DE3579120D1 (en) |
| GB (2) | GB8429626D0 (en) |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4720040A (en) * | 1986-12-19 | 1988-01-19 | Gurewitz Richard M | Security deposit bag |
| US4733817A (en) * | 1987-02-05 | 1988-03-29 | Makowka Kenneth R | Envelope system with multiple pockets |
| GB8722623D0 (en) * | 1987-09-25 | 1987-11-04 | Doboy Ltd | Bag sealing arrangement |
| US4941196A (en) * | 1988-11-01 | 1990-07-10 | Kcl Corporation | Tamper evident bag |
| US5077001A (en) * | 1988-11-21 | 1991-12-31 | Makowka Kenneth R | Tamper-evident sealing system for envelope having special characteristics and method of making same |
| CA1334955C (en) * | 1988-11-21 | 1995-03-28 | Kenneth R. Makowka | Tamper-evident sealing system for envelope and method of making same |
| CA2019761C (en) * | 1989-06-30 | 2000-04-25 | Gerald O. Hustad | Tamper-evident, flexible, reclosable packages |
| US5108194A (en) * | 1991-01-07 | 1992-04-28 | Raden David T | Security bag |
| GB2259496A (en) * | 1991-09-13 | 1993-03-17 | Gersan Ets | Security package |
| US5318364A (en) * | 1992-10-28 | 1994-06-07 | Raden David T | Security bag |
| FR2699505B1 (en) * | 1992-12-23 | 1995-03-10 | Schisler Cie Europ Emballages | Soft security bag. |
| CA2123247A1 (en) * | 1993-05-13 | 1994-11-14 | Harry I. Roccaforte | Multi-use envelope |
| IES71188B2 (en) * | 1995-11-13 | 1997-02-12 | Datablend Limited | Improvements in and relating to envelopes |
| FR2764866B1 (en) * | 1997-06-20 | 1999-09-03 | Decomatic Sa | SECURITY DEVICE FOR GUARANTEEING THE AUTHENTICITY AND THE INVIOLABILITY OF A CONTAINER AND THE OBJECTS THEREIN |
| GB9811190D0 (en) * | 1998-05-22 | 1998-07-22 | Britton Security Products | Multiple use security bag |
| US6139184A (en) * | 1999-07-23 | 2000-10-31 | Meldon; Ben | Security storage container |
| US6446861B1 (en) * | 2000-10-05 | 2002-09-10 | Robert F. Smith | Envelope for controlling and identifying access to the contents and a method of use |
| WO2006112004A1 (en) * | 2005-04-12 | 2006-10-26 | Sunny Co., Ltd. | Transportation method and slip for transportation |
| US10106297B2 (en) * | 2016-12-29 | 2018-10-23 | Inteplast Group Corporation | Reclosable bag with header |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1448429A (en) * | 1920-08-26 | 1923-03-13 | Thomas F Bradley | Double-seal envelope |
| GB2032882A (en) * | 1978-09-29 | 1980-05-14 | Franko Plastics Ltd | Bags |
| AU523051B2 (en) * | 1978-12-15 | 1982-07-08 | Arvey Corporation | Contaminant proof seal |
| GB2051003B (en) * | 1979-05-16 | 1983-03-16 | Drg Uk Ltd | Security bag |
| DE2934673A1 (en) * | 1979-08-28 | 1981-03-12 | Brdr. Schur International A/S, Horsens | BAG PACK FOR AROMATIZED FILLING GOODS AND METHOD FOR PRODUCING THE PACK. |
| US4483018A (en) * | 1981-02-09 | 1984-11-13 | Impakt Products, Inc. | High integrity tamper resistant container |
-
1984
- 1984-11-23 GB GB848429626A patent/GB8429626D0/en active Pending
-
1985
- 1985-11-21 AT AT85308475T patent/ATE55345T1/en not_active IP Right Cessation
- 1985-11-21 GB GB8528653A patent/GB2167381B/en not_active Expired
- 1985-11-21 DE DE8585308475T patent/DE3579120D1/en not_active Expired - Fee Related
- 1985-11-21 EP EP85308475A patent/EP0183489B1/en not_active Expired - Lifetime
- 1985-11-22 JP JP60263625A patent/JPS61178847A/en active Pending
- 1985-11-22 AU AU50287/85A patent/AU588260B2/en not_active Ceased
- 1985-11-22 CA CA000496038A patent/CA1267384A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| DE3579120D1 (en) | 1990-09-13 |
| AU588260B2 (en) | 1989-09-14 |
| GB8429626D0 (en) | 1985-01-03 |
| EP0183489B1 (en) | 1990-08-08 |
| GB8528653D0 (en) | 1985-12-24 |
| JPS61178847A (en) | 1986-08-11 |
| GB2167381B (en) | 1989-04-05 |
| EP0183489A2 (en) | 1986-06-04 |
| EP0183489A3 (en) | 1987-12-09 |
| AU5028785A (en) | 1986-05-29 |
| ATE55345T1 (en) | 1990-08-15 |
| GB2167381A (en) | 1986-05-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |