Double sided adhesive tape for sealing and opening cartons or cartonlike packages
View Patent ↗The use of a double sided adhesive tape for sealing and opening cartons or cartonlike packages, at least one of the two films of adhesive of the double sided adhesive tape being present applied in the lengthwise direction of the carrier material in the form of a strip which is present at least partially and which is narrower than the carrier material of the adhesive tape, the bonding of the adhesive tape between the two plies or flaps of the carton or of the cartonlike packages taking place in such a way that the part of the carrier material not covered by the film of adhesive is likewise situated between the two plies or flaps.
1. A combination comprising:
(a) a package comprising two overlapping plies or two overlapping flaps; and
(b) a single double-sided adhesive tape adhered between the two overlapping plies or between the two overlapping flaps in such a way that one side of the double-sided adhesive tape is adhered to a first of the two overlapping plies or a first of the two overlapping flaps and another side of the double-sided adhesive tape is either adhered to or capable of being adhered to a second of the two overlapping plies or to a second of the two overlapping flaps;
wherein the double-sided adhesive tape comprises a carrier material which has a line of weakness which is covered on one face thereof with a first adhesive film strip, and on a second face thereof with a second adhesive film strip, at least one of said first or second adhesive film strips being narrower in width than the carrier material, so that a lengthwise portion of at least one face of the carrier material is adhesive-free, the lengthwise portion that is adhesive-free being situated between the two overlapping plies or between the two overlapping flap, said adhesive-free portion is the portion between the line of weakness in the carrier and an edge of the carrier, wherein the lengthwise portion that is adhesive-free is situated next to a portion of one of the two overlapping plies or to a portion of one of the two overlapping flaps, and said portion of the plies or said portion of the flaps is weakened, and wherein the portion of the plies or the portion of the flaps is weakened over a width corresponding to the width of the lengthwise portion that is adhesive-free.
2. The combination according to claim 1 , wherein the package is a carton.
3. The combination according to claim 1 , wherein the lengthwise portion that is adhesive-free has a width of from 3 to 7 mm.
4. The combination according to claim 3 , wherein the lengthwise portion that is adhesive-free has a width of about 5 mm.
5. The combination according to claim 1 , wherein the lengthwise portion that is adhesive-free occupies 30% of the width of the double-sided adhesive tape.
6. The combination according to claim 1 , wherein the carrier material is split along its thickness along the line of weakness.
7. The combination according to claim 1 , wherein the carrier material is composed of a tensile material suitable as a tear-open strip and/or is composed of a material which is easy to separate in a lengthwise direction.
8. The combination according to claim 7 , wherein the carrier material is composed of (a) a tensile material suitable as a tear-open strip selected from the group consisting of MOPP and filament web and/or of (b) a material which is easy to separate in the lengthwise direction selected from the group consisting of MOPP, filament web and PET.
9. The combination according to claim 1 , wherein one side of said double-sided adhesive tape is adhered to a first of the two overlapping plies or to a first of the two overlapping flaps and another side of said double-sided adhesive tape is covered with a release film.
10. The combination according to claim 9 , wherein the package is a carton.
11. A method of sealing and thereafter opening a package, said method comprising the following steps:
(a) providing a combination according to claim 9 ;
(b) removing the release film from said another side of said double-sided adhesive tape, and adhering said another side of said double-sided adhesive tape to a second of the two overlapping plies or to a second of the two overlapping flaps to seal the package; and
(c) grasping at least a portion of the double-sided adhesive tape and pulling to tear open the package.
12. The method according to claim 11 , wherein the package is a carton.
13. The method according to claim 11 , wherein the carrier material is split along its thickness along the line of weakness.
14. The method according to claim 11 , wherein the carrier material is composed of a tensile material suitable as a tear-open strip and/or is composed of a material which is easy to separate in a lengthwise direction.
15. The method according to claim 14 , wherein the carrier material is composed of (a) a tensile material suitable as a tear-open strip selected from the group consisting of MOPP and filament web and/or of (b) a material which is easy to separate in the lengthwise direction selected from the group consisting of MOPP, filament web and PET.