This application claims priority to PCT Application No. PCT/US2017/058734 filed Oct. 27, 2017, entitled “A Method and Device for Sealing a Joint,” which claims the benefit of and priority to Sweden Patent Application No. 1651520-7, filed on Nov. 21, 2016. All the aforementioned applications are incorporated by reference herein in their entirety.
The present invention relates to a method and a sealing device for sealing a joint between two end sides of two contiguous panels. It also relates to two contiguous panels sealed together and to a corrugated box.
When sealing two end sides of two relatively flat panels to each other a tape or glue would be a common choice for performing the sealing. A problem with glue is that it takes some time for the glue to dry and provide the sealing effect and the providing of glue may also require some equipment. A tape may not be strong enough for keeping the panels together.
One example of when two panels need to be sealed together is when a manufacturer's joint in a corrugated box is sealed. The manufacturer's joint is a joint in the side walls in a corrugated box which historically is sealed already by the manufacturer of the box while bottom and top of the box are left open for a user to close later when the box is erected. The manufacturer's joint is a joint sealing the two outermost panels of a box template such that four side walls of a box is formed while top and bottom ends of the box still are open. Furthermore systems have been developed for creating custom sized boxes. In that case the user of the box may seal also the manufacturer's joint himself. If glue is used for sealing the manufacturer's joint a glue tab is provided in the box template which is an extra part of the side walls of the box, i.e. at some position of the side walls of the box the panels are overlapping forming the manufacturer's joint, which is sealed by glue. If instead tape is used for sealing the manufacturer's joint no glue tab is needed. The panels are instead provided adjacent each other and tape is provided for sealing the joint. This is described in for example WO 2013/103722.
An object of the invention is to provide an improved method for sealing two panels to each other.
A further object of the invention is to provide an improved corrugated box.
A further object of the invention is to provide a method and a device for sealing two panels to each other which method and device is easy to use and provides a strong seal between the panels.
A further object of the invention is to provide an improved method and a device for sealing a manufacturer's joint of a corrugated box.
This is achieved in a method, a device, two panels and a corrugated box according to the independent claims.
This will provide a strong seal of a joint because tape is provided from both sides. Furthermore a robust, reliant and easy to manage method is provided. Furthermore a compact, cheap and easy to handle device for sealing the joint is achieved.
According to one aspect of the invention a method is provided for sealing a joint between two end sides of two contiguous panels, said method comprising the steps of:
According to another aspect of the invention two contiguous panels which are sealed together are provided, whereby a joint which is sealed is defined by adjacent end sides of the two panels, whereby the seal has been provided by a first tape provided to a first face of the two panels, said first tape sealing the joint and being provided in the direction of the joint and by a second tape provided to a second face of the two panels, wherein the second face of the two panels is the opposite face to the first face of the panels, said second tape sealing the joint and being provided in the direction of the joint.
According to another aspect of the invention a corrugated box is provided, said corrugated box having a manufacturer's joint, wherein the manufacturer's joint has been sealed by a first tape provided to a first face of the side of the corrugated box comprising the manufacturer's joint, said first tape sealing the manufacturer's joint and being provided in the direction of the manufacturer's joint and by a second tape provided to a second face of the side of the corrugated box comprising the manufacturer's joint, wherein the second face is the opposite face to the first face, said second tape sealing the manufacturer's joint and being provided in the direction of the manufacturer's joint.
According to another aspect of the invention a sealing device is provided for sealing a joint between two end sides of two contiguous panels, said sealing device comprising:
In one embodiment of the invention the step of sealing the joint with a first and a second tape further comprises providing the first and second tapes over the whole length of the joint and further extending a distance outside the panels on one or both sides and the method further comprises the step of attaching the two tapes to each other where the tapes are extending outside the joint. In one embodiment of the invention two contiguous panels are provided which are sealed together, wherein the first and second tapes are extending outside the panels on one or both sides and in one embodiment of the invention a corrugated box is provided wherein the first and second tapes are extending outside the manufacturer's joint on one or both sides. Hereby an extra durability is provided to the sealing. Furthermore when the two adhesive sides of the two tapes attach to each other outside the joint the risk that the tapes will be teared off is decreased. The double tape will also protect the panels from wearing, especially at the ends of the joint.
In one embodiment of the invention the method is a method for sealing a manufacturer's joint in a corrugated box.
In one embodiment of the invention the step of sealing the joint with a first and a second tape comprises providing the first and second tapes to the joint simultaneously.
In one embodiment of the invention the step of sealing the joint comprises passing the panels between two connected tape dispensers.
In one embodiment of the invention the method further comprises the step of automatically releasing a cutter arrangement for cutting the tapes off when the tape dispensers are at a certain distance from the panels after the sealing of the joint.
In one embodiment of the invention a sealing device is provided wherein the first and second parts of the sealing device are connected to each other by a transverse member such that the two panels to be joined can be passing between the first and second parts with the transverse member fitting in the joint, hereby there will be a distance between the two panels in the joint which distance corresponds substantially to a width of the transverse member.
In one embodiment of the invention the first and second tape dispensers each comprises a tape roll and an applicator roll, whereby tape from the tape roll is provided onto the panels by the applicator roll and the two applicator rolls will be provided close to each other allowing the two panels to pass between them whereby the first and second tapes will be provided to the panels while they are passing between the applicator rolls.
In one embodiment of the invention at least one of the applicator rolls is provided spring loaded such that by loading a spring the spring loaded applicator roll can be forced away from the other applicator roll thus allowing the panels to pass between the applicator rolls.
In one embodiment of the invention the sealing device further comprises a cutter arrangement arranged for cutting the two tapes at a certain distance from the panels.
In one embodiment of the invention the cutter arrangement is spring loaded and comprises an extending part arranged for sliding over a surface of the panels when they are passing through the sealing device, said extending part keeping a cutting part of the cutter arrangement in an inactive position as long as the extending part is in contact with the panels and when the panels have passed the sealing device and the extending part no longer is in contact with the panels the spring force will bring the cutting part into a cutting position where the two tapes are cut off.
In one embodiment of the invention at least one of the applicator rolls is driven by a motor which can be controlled in dependence of output from a sensor which can detect the presence of a panel in the sealing device.
In one embodiment of the invention the sealing device further comprising guiding wheels protruding into an opening between the first and second parts which opening the panels are passing through during sealing of the joint, said wheels being oriented for guiding the two panels towards each other during their passing through the sealing device.
In this shown embodiment of the invention the first and second tapes 15, 17 have been provided along the whole length of the joint 5 and are also extending attached to each other outside the panels 1, 11 at both ends of the joint 5. The tapes could as well extend outside the panels on only one side. This extension of the tapes outside the panels on one or both sides of the panels is not necessary for the invention but will provide an extra durability to the sealing. When the two adhesive sides of the two tapes attach to each other outside the joint the risk that the tapes will be teared off is decreased. The double tape will also protect the panels from wearing, especially at the ends of the joint.
These two panels could be for example two ends of two different material stocks which should be connected. The material stocks could comprise any type of paper or cardboard such as for example cardboard used for corrugated boxes. The two panels could also be the two outermost side panels of a box template which is shown in
S1: Holding an end side of a first panel 1 close to an end side of a second panel 11, whereby the joint 5 to be sealed is defined by the adjacent end sides of the two panels.
S3: Sealing the joint with a first and a second adhesive tape 15, 17. A first tape 15 is provided to a first face 19 of the two panels. The first tape 15 seals the joint 5; 31 and is provided in the direction of the joint. A second tape 17 is provided to a second face 21 of the two panels, wherein the second face of the two panels is the opposite face to the first face of the panels. The second tape 17 seals the joint and is provided in the direction of the joint.
In one embodiment of the invention the step of sealing the joint 5, 31 with a first and a second tape 15, 17 further comprises providing the first and second tapes over the whole length of the joint and further extending a distance outside the panels 1, 11 and wherein the method further comprises a step S5 of attaching the two tapes to each other where the tapes are extending outside the joint.
In one embodiment of the invention the step of sealing the joint with a first and a second tape comprises providing the first and second tapes to the joint simultaneously.
The step of sealing the joint comprises in one embodiment of the invention passing the panels between two connected tape dispensers. Either the tape dispensers are kept stationary and the panels are advanced between them or alternatively the panels can be kept stationary and the two connected tape dispensers can be moved such that the panels are passing between the two connected tape dispensers.
In one embodiment of the invention the method further comprises the step S7 of cutting the tapes off. This can be done by automatically releasing a cutter for cutting the tapes off after the sealing of the joint when the tape dispensers are at a certain distance from the panels. However, in another embodiment the tapes can be cut off manually.
The first and second parts 53, 73 of the sealing device are in this embodiment of the invention connected to each other through a transverse member 91 such that the two panels to be joined can be passing between the first and second parts 53, 73 with the transverse member 91 fitting in the joint 5. Hereby there will be a distance between the two panels in the joint which distance corresponds substantially to a width of the transverse member 91. The transverse member 91 will be described in more detail below.
The first and second tape dispensers 55, 75 each comprises a tape roll 56, 76 and an applicator roll 57, 77, whereby tape from the tape roll 56, 76 is provided onto the panels 1, 11 by the applicator roll 57, 77 (see also
Also seen in
The first part 53 of the sealing device comprises a first mounting surface 58 onto which the tape roll 56 and the applicator roll 57 of the first tape dispenser 55 are mounted and the second part 73 of the sealing device 51 comprises a second mounting surface 78 onto which the tape roll 76 and the applicator roll 77 of the second tape dispenser 75 are mounted. The first and second mounting surfaces 58, 78 comprises in this embodiment at least one part each which is provided substantially perpendicular to the surface of the panels 1, 11 when they are passing through the sealing device 51. The tape rolls and applicator rolls are mounted to these perpendicular parts of the mounting surfaces 58, 78.
A cutter arrangement 81 is in one embodiment of the invention provided to either the first part 53 or the second part 73 of the sealing device 51. In the embodiment shown in
In one embodiment of the invention at least one of the applicator rolls 57, 77 can be motor driven to facilitate the passing of the panels through the sealing device 51. This is not shown in the figures but a skilled person would understand how to provide an axis and a motor to one of the applicator rolls for rolling it. A sensor could also be provided in connection with the motor. The sensor could detect the presence of panels within the sealing device and the motor could be controlled to roll the applicator roll based on these sensor signals.
Number | Date | Country | Kind |
---|---|---|---|
1651520-7 | Nov 2016 | SE | national |
Filing Document | Filing Date | Country | Kind |
---|---|---|---|
PCT/US2017/058734 | 10/27/2017 | WO | 00 |
Publishing Document | Publishing Date | Country | Kind |
---|---|---|---|
WO2018/093551 | 5/24/2018 | WO | A |
Number | Name | Date | Kind |
---|---|---|---|
1993205 | Bowersock et al. | Mar 1935 | A |
2068163 | Bowersock et al. | Jan 1937 | A |
2795263 | Arvid | Jun 1957 | A |
3623933 | Staats | Nov 1971 | A |
20050028835 | Husband | Feb 2005 | A1 |
20090298662 | Maeaettae et al. | Dec 2009 | A1 |
Number | Date | Country |
---|---|---|
19518273 | Dec 1996 | DE |
2588506 | Apr 1987 | FR |
2772303 | Jun 1999 | FR |
H09 240626 | Sep 1997 | JP |
2007135234 | Nov 2007 | WO |
2013103722 | Jul 2013 | WO |
Entry |
---|
International Search Report and Written Opinion, European International Search Authority, PCT/US2017/058734, dated Feb. 9, 2018. |
Number | Date | Country | |
---|---|---|---|
20200061950 A1 | Feb 2020 | US |