Envelopes – wrappers – and paperboard boxes – Wrapper – Including means to facilitate severing the wrapper
Reexamination Certificate
1999-08-19
2001-11-20
Pascua, Jes F. (Department: 3727)
Envelopes, wrappers, and paperboard boxes
Wrapper
Including means to facilitate severing the wrapper
Reexamination Certificate
active
06318625
ABSTRACT:
The invention relates to a packaging wrapper for handkerchiefs, household or other hygiene tissues, as a pouch comprising a sealing flap that the least partially overlaps an opening for removing the tissues, this opening being formed on an elongated upper side of the packaging wrapper, and which also at least partially overlaps an extension of the front side of the packaging wrapper on the upper side, this extension at least partially covering the removal opening. The sealing flap is formed by an extension of the rear side of the pouch and by slots that are located on both sides and within an edge of the upper side, whereby the extension of the front side of the packaging wrapper overlapped by the sealing flap is also formed by slots located on both sides and within the edge of the upper side in such a way that the slots simultaneously delimit the removal opening, and whereby an overlapping material of the packaging wrapper is bonded together on the upper side outside the slots and also outside the removal opening.
BACKGROUND
Such packaging wrappers or paper handkerchiefs are commercially available in a variety of versions and they are all provided with a removal opening that can be closed by means of a sealing flop, whereby an adhesive strip located on the sealing flap and containing a pressure-sensitive adhesive makes it possible to open and close the removal opening repeatably. In this way, a packaging wrapper is also known which in broadside form is to be opened on the long narrow side and in which an extension of the rear side as a sealing flap covers a removal opening. An extension of the front side also partially covers the removal opening on the narrow upper side of the packaging wrapper. These extensions are formed by slots which are inwardly spaced apart from the narrow edge of the upper side and extend transverse to the longitudinal extension of the upper side. The region of the upper side outside the removal opening and hence outside the slots is closed as a result of bonding.
Provision of slots in the extensions of the front and rear sides of the packaging wrapper—which extensions bridge over the removal opening and guarantee engagement with the packing wrapper, thus ensuring that the tissues are removed more easily from the packaging wrapper—nevertheless entails the problem that packaging—wrapper corners formed by the slots project outwards. On the one hand, this results in an impaired appearance. On the other hand; it is not always possible to prevent the penetration of dirt in the area of the removal opening, particularly after the sealing flap has been opened and closed frequently.
Although U.S. Pat. No. 5,040,685 does mention the provision of a connection of the sealing flap at the upper side of, a packaging wrapper, this connection only serves to guarantee that the pack is sealed prior to being opened for the first time.
In the packaging wrapper for paper handkerchiefs shown in DE-Ul-90 14 065, an adhesive strip which sticks to the front side of the packaging wrapper in order to close the sealing flap serves to open and reseal the packaging wrapper.
The skilled person gathers the teaching from DE-Ul-90 10 670 that a strip of pressure-sensitive adhesive should be placed between the sealing flap and the extension of the front side of the packaging wrapper. A region which is free of pressure-sensitive adhesive and which is consequently not bonded to the extension of the front side of the packaging wrapper is formed between the strip of pressure-sensitive adhesive and the end edge of the sealing flap. As a result a non-adhesive section which does not make contact with the extension of the front side is produced as a grip tab at this site.
EP-A-0 293 360 envisages the formation of a convexly extending edge on a film section that overlaps the removal opening of the packaging wrapper in the central region of this edge. This packaging wrapper design is characterized by the fact that it automatically places the sealing flap over the removal opening and covers this opening whenever the wrapper contains handkerchiefs, thus causing them to lie protected within the film wrapper.
In the packaging wrapper described in EP-A-0 132 250, the overlapping film sections -can be fixed together at the shorter edges of the elongated narrow sides by means of a bonding connection for one-off sealing.
SUMMARY
Starting out from this prior art, the present invention is based upon, the object of extending known packaging wrappers such that even better handling is achievable in conjunction with an improved appearance.
In combination with the features described at the start, this object is solved by applying A pressure-sensitive adhesive for temporarily and repeatably closing the pouch on the aforementioned extension's outer surface located beneath the sealing flap or on the sealing flap's inner surface located above the extension such that corners formed by the slots do not outwardly project in the closed state.
As a result, of the fact that a pressure-sensitive adhesive for temporarily and repeatably closing the pouch is located between the sealing flap and the front-side extension, the sealing flap, in its closed state, always makes contact with the, front-side extension even after the flap has been repeatedly opened. The corners formed by the slots in the front-side and rear-side extensions therefore no longer outwardly project, thus improving the appearance of the packaging wrapper. An especially simple seal is also achieved particularly by the combination of the slots arranged in the extensions with the pressure-sensitive adhesive in the area between the extensions, thereby making handling easier while improving the appearance.
In the case of the packaging wrapper of EP 0 401 621 A, there is no pressure-sensitive adhesive between the extension
17
and the sealing flap
23
.
By bonding-only outside the slots on the upper side of the packaging wrapper, the remaining area of the upper side remains unaffected by the effect of heat, thus improving the appearance of the packaging wrapper.
Since printing on the outer surface of the packaging wrapper prevents the film from bonding, there are-regions without print on the upper side outside the slots and outside the removal opening in the area of bonding; these regions allow the material to be bonded.
An adhesive strip fastened to the sealing flap can also be attached, as an actual mount for the sealing flap; this adhesive strip is provided with a pressure-sensitive adhesive and sticks to the front side of the packaging wrapper in order to close the sealing flap.
Depending on the desired conditions, the adhesive force can be controlled via the aforementioned pressure- sensitive adhesive applied in the area of the upper side of the packaging wrapper whenever this pressure-sensitive adhesive is applied either over the entire surface area or in the form of stripes, dots or other patterns.
Depending on the desired conditions, the adhesive force can be controlled via the aforementioned pressure-sensitive adhesive applied in the area of the upper side of the packaging wrapper whenever this pressure-sensitive adhesive is applied either over the entire surface area or in the form of stripes, dots or other patterns.
To prevent the film from initially tearing in the area of the adhesive strip when opening the sealing flap, the area covered by the pressure-sensitive adhesive is reduced in the vicinity of the adhesive strip. In particular, the reduced area is concavely rounded toward the free edge of the sealing flap, i.e. from where the adhesive strip engages.
REFERENCES:
patent: 2318101 (1943-05-01), Rose
patent: 2690288 (1954-09-01), Allen et al.
patent: 4540091 (1985-09-01), Haböck
patent: 5040685 (1991-08-01), Focke et al.
patent: 5085724 (1992-02-01), Focke et al.
patent: 5096113 (1992-03-01), Focke
patent: 5121879 (1992-06-01), Focke et al.
patent: 5165545 (1992-11-01), Focke et al.
patent: 2015746 (1990-11-01), None
patent: 2018224 (1990-12-01), None
patent: 90 10 670.9 (1990-10-01), None
patent: 90 14 065.6 (1991-04-01), None
pa
Malke Wolfgang
Muller Heinz-Jurgen
Fitch Even Tabin & Flannery
Pascua Jes F.
SCA Hygiene Products GmbH
LandOfFree
Packaging wrapper does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Packaging wrapper, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Packaging wrapper will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2616755