Pressure sensitive transfer tape

Details Pressure sensitive transfer tape Pressure sensitive transfer tape

1999-11-18

2002-12-31

Ahmad, Nasser (Department: 1772)

Stock material or miscellaneous articles

Layer or component removable to expose adhesive

C015S104940, C118S257000, C428S040200, C428S041400, C428S041700, C428S041800, C428S354000, C428S35500R, C428S447000, C428S448000

Reexamination Certificate

active

06500509

ABSTRACT:

BACKGROUND OF THE INVENTION
The present invention relates to a pressure sensitive transfer tape, such as a transfer-type pressure sensitive correction tape, or a transfer-type pressure sensitive adhesive tape. More particularly, the invention relates to a transfer-type pressure sensitive correction tape wherein a pressure sensitive transfer layer, which is comprised of a masking layer and a pressure sensitive adhesive layer, is transferred onto a paper surface or a like surface by being pressed against the surface by means of a handy-type transfer tool such that an image comprising characters or the like is masked and thus erased, and wherein it is possible to write with a writing tool, such as a ballpoint pen or a pencil, on the surface of the transfer layer. The invention further relates to a transfer-type pressure sensitive adhesive tape, wherein a pressure sensitive adhesive layer is transferred onto a receiving object, such as a paper surface, by being pressed against the paper surface by means of a handy-type transfer tool such that another article can be pasted on the receiving object.
Nowadays, there is greater interest in transfer-type pressure sensitive correction tapes than in conventional correction liquids. This is because transfer-type pressure sensitive correction tapes offer advantages, such as ease of handling and the ability to write on corrected spots immediately after correction.
Known transfer-type pressure sensitive correction tapes have a structure, wherein a pressure sensitive transfer layer, including a masking layer containing a white pigment, and a pressure sensitive adhesive layer is provided on one side of a support. As the support, generally paper sheets, such as glassine paper, which have undergone a releasing treatment, are used. Such transfer-type pressure sensitive correction tapes are mounted in a handy-type transfer tool.
FIG. 1
is a schematic view showing one example of a handy-type transfer tool in which a pressure sensitive correction tape is mounted, and
FIG. 2
is an enlarged view of a main part thereof.
1
denotes a transfer-type pressure sensitive correction tape, wherein a pressure sensitive transfer layer
3
, which includes a masking layer and a pressure sensitive adhesive layer laminated in this order, on a support
2
. Main components of the transfer tool comprise a supply reel
10
for the pressure sensitive correction tape
1
, a winding reel
11
for the support
2
, and a wedge-shaped head
12
for pressuring the pressure sensitive correction tape
1
onto a receiving object
13
, such as a sheet of paper. It should be noted that the following are omitted in FIGS.
1
and
2
: a gear mechanism for driving the supply reel
10
and the winding reel
11
, a cartridge for setting the supply reel
10
and the winding reel
11
to be mounted into the transfer tool and a case body.
When the transfer tool is moved on the receiving object
13
in the direction of arrow A, the pressure sensitive correction tape
1
is drawn out and pressed by the head
12
, whereby the pressure sensitive transfer layer
3
is parted from the support
2
and adhered onto the receiving object. At the same time, the support
2
, which has been parted from the pressure sensitive transfer layer
3
, is wound by the winding reel
11
.
Recently, there is a need to make smaller transfer tools. Consequently, pressure sensitive correction tapes must also be reduced in thickness and width. However, conventional pressure sensitive correction tapes using paper supports cannot meet such requirements.
In view of this fact, it has been proposed to use an organic polymer film, which has undergone a releasing treatment, as the support. However, using such an organic polymer film causes the following drawbacks. First, slips are caused while running the pressure sensitive correction tape because the support is a polymer film. In particular, where the pressure sensitive correction tape
1
is drawn out from a transfer tool while the support
2
at a portion of the head
12
is not provided with a pressure sensitive transfer layer
3
as shown in
FIG. 2
, the required friction force with respect to a common receiving object (such as, usual paper, etc.) can not be obtained because the polymer film is highly smooth. Thus, a slip is generated at a normal pressing force such that the pressure sensitive correction tape
1
can not be drawn out. Hereinafter, the characteristics of the support that do not cause a slip are denoted as favorable running characteristics of the support. The next problem is that the high smoothness of the polymer film results in a glossy surface of the transferred pressure sensitive transfer layer. That is, the interface of the masking layer, which is applied onto a release layer, with the release layer, which is applied on the polymer film, also becomes highly smooth. When such a masking layer is transferred onto a paper sheet, the surface of the transferred masking layer will be glossy in contrast to the unglossy surface of the paper receiving the transfer. The paper surface is of low smoothness so that the corrected portion, which is originally not intended to stand out, will be conspicuous. Hereinafter, the characteristics wherein the surface of the transferred masking layer is unglossy is denoted as “unglossiness”.
In order to solve the above problems, it is desirable to increase the friction force with respect to the receiving object or to address unglossiness, such as by incorporating particles into the polymer film or performing a sand matting treatment on one surface of the polymer film. However, each results in higher costs.
Further, transfer-type pressure sensitive adhesive tapes are also of greater interest than double-sided adhesive tapes or stick-type glues due to the ease of handling.
Known transfer-type pressure sensitive adhesive tapes have a structure, wherein a pressure sensitive adhesive layer is provided on one side of a support. As the support, generally paper sheets, such as glassine paper, which have undergone a releasing treatment, are used. Such transfer-type pressure sensitive adhesive tapes are mounted in a handy-type transfer tool.
FIG. 3
is a schematic view showing an example of a handy-type transfer tool in which a pressure sensitive adhesive tape is mounted, and
FIG. 4
is an enlarged view of a main part thereof.
21
denotes a transfer-type pressure sensitive adhesive tape, wherein a pressure sensitive adhesive layer
23
is provided on a support
22
as a pressure sensitive transfer layer. Main components of the transfer tool comprise a supply reel
10
for the pressure sensitive adhesive tape
21
, a winding reel
11
for the support
22
, and a wedge-shaped head
12
for pressuring the pressure sensitive adhesive tape
21
onto a receiving object
13
, such as a sheet of paper. It should be noted that the following are omitted in FIGS.
3
and
4
: a gear mechanism for driving the supply reel
10
and the winding reel
11
, a cartridge for setting the supply reel
10
and the winding reel
11
to be mounted into the transfer tool and a case body.
When the transfer tool is moved on the receiving object
13
in the direction of arrow A, the pressure sensitive adhesive tape
21
is drawn out and pressed by the head
12
, whereby the pressure sensitive adhesive layer
23
is parted from the support
22
and adhered onto the receiving object
13
. At the same time, the support
22
, which has been parted from the pressure sensitive adhesive layer
23
, is wound by the winding reel
11
.
Recently, it is desirable to make smaller transfer tools. Consequently, pressure sensitive adhesive tapes must also be reduced in thickness and width. However, conventional pressure sensitive adhesive tapes using paper supports cannot meet such requirements.
In view of this fact, it has been proposed to employ an organic polymer film, which has undergone a releasing treatment, as the support. However, using such an organic polymer film causes slips while running, the pressure sensitive adhesive tape because the support is a polymer f

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