JPH10120293A - Method of separating protective liner in pressure sensitive adhesive double coated tape and separating tab structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform protective liner separating work easily without mistake by sticking a separating tab piece easily in case of separating a protective liner of a pressure sensitive adhesive double coated tape at an optional position in a longitudinal direction to separate the protective liner. SOLUTION: A sheet-like tab piece 3 for separation is stuck to a separation predetermined place of a protective liner 2 in such a way that both end parts 3a, 3b are protruded as grip parts from both cross direction sides of the protective liner 2. Depth of cut 4 crossing from one side end of the protective liner 2 to the other side end and diagonally parting the sheet-like tab piece 3 is formed within an area of the stuck part so as to reach the protective liner 2. The protective liner 2 is thereby separated along with the tab piece 3, and the protective liner 2 can be separated from a separating part holding the parted tab piece.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for peeling a protective liner from a double-sided adhesive tape and a tab structure for peeling.

[0002]

BACKGROUND OF THE INVENTION Problems to be Solved by the Invention
2. Description of the Related Art Double-sided adhesive tapes are increasingly used for attaching weather strips provided on the peripheral edge of doors that open and close a vehicle body opening. As a means,
In general, one side of the double-sided adhesive tape is bonded to a weather strip in advance, and the other side of the double-sided adhesive tape is bonded to a peripheral portion of a door or the like. On the surface of the double-sided adhesive tape attached to the weather strip, a protective liner is peelably attached from release paper to protect the other adhesive surface, etc. The liner is to be peeled off.

In the case of a relatively large loop-shaped or long-sized tape such as a double-sided adhesive tape used for attaching the weather strip, the protective liner is separated at an arbitrary position in the longitudinal direction. Separation is started from the separated end of the liner, and in order to facilitate this peeling operation, a tab piece for peeling is attached to the end of the liner.

Conventionally, as a means for attaching the tab pieces, as shown in FIG. 5, after separating a protective liner (52) attached to a double-sided adhesive tape (51), both separated liners are separated. Two separate sheet-shaped tab pieces (53a) and (53b) were attached to the ends so as to protrude from one side end.

At this time, the bonding surfaces (53c) (53c) of the tab pieces (53a) (53b) are exposed according to the width dimension of the protective liner (52), and the separation line of the protective liner (52) is separated. It is necessary to align the adhesive surfaces (53c) and (53c) to the liner side end surface after the alignment so as to be adjacent to both sides of (54), and the alignment is not easy. It takes a lot of time and labor to attach, and the sticking position tends to shift. When the sticking position is shifted, there is a problem that a peeling error of the protective liner occurs.

SUMMARY OF THE INVENTION In view of the above, the present invention provides a method of separating a protective liner, in which a protective liner of a double-sided adhesive tape can be easily separated and separated at an arbitrary position in the longitudinal direction. And a peeling tab structure, in particular, a sheet-like tab piece for peeling can be easily adhered, and the protective liner can be easily peeled off without error.

[0007]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems. According to the first aspect of the present invention, a protective liner that is releasably attached to the surface of a double-sided adhesive tape is provided at an arbitrary position in the longitudinal direction. When the protective liner is to be separated and peeled off, a sheet-like tab piece for peeling is adhered in a crossing direction with the protective liner at a place where the protective liner is to be separated, and then one side of the protective liner in the region of the adhered portion. Cut the protective liner together with the sheet tab by making a notch that traverses from one end to the other end and divides the sheet tab into two pieces, and separates the protective liner with the sheet tab and holds the cut tab. The protective liner is peeled off.

[0008] In the above, as in claim 2, a sheet-like tab piece for peeling is adhered to both sides in the width direction of the protective liner so that both ends protrude as knobs, and the area of this adhesive part is adhered. It is particularly preferable that a cut is made in the protective liner so as to cross from one side end to the other side end and diagonally divide the sheet-like tab pieces.

According to a third aspect of the present invention, there is provided the protective liner release tab structure, wherein the protective liner is releasably attached to the surface of a double-sided adhesive tape. At any point in the direction, a sheet-like tab piece for a peeling operation is stuck on both sides in the width direction of the protective liner with both ends protruding as knobs, and the protective liner is adhered in the area of the sticking portion. A cut which traverses from one side end to the other side end and diagonally divides the sheet-shaped tab piece is formed at a depth reaching the protective liner.

[0010]

According to the method for peeling a protective liner of the double-sided adhesive tape of the present invention and the tab structure for peeling, after a single sheet-like tab for release is adhered to the protective liner on the surface of the double-sided adhesive tape, A notch that can separate the protective liner and divides the sheet-like tab pieces into two, for example, a diagonal notch, is cumbersome to align and stick the two sheet-like tab pieces to the separated liner end. No work is required, and the two tab pieces separated by the above-mentioned notch formation are stuck to both of the separated liner ends.

In addition, since the cut is formed so as to cross the protective liner from one side end to the other side end in the area of the sticking portion of the sheet-like tab piece, the cut tab is cut off. The separated end of the protective liner is located in the sticking portion of the piece, and therefore, if the separated tab piece is peeled off by holding it, the separated liner can be reliably separated from the separated liner end without mistake.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a partially enlarged perspective view showing an embodiment of the present invention, FIG. 2 is a plan view of a part of the same without the weather strip, and FIG. It is.

In the drawing, (1) is a double-sided adhesive tape used for mounting a sponge rubber weather strip (10) for an automobile, for example, an acrylic foam tape having adhesiveness (manufactured by Sumitomo 3M Ltd., product Number 533
2B). Of course, a double-sided adhesive tape of another material may be used. This double-sided adhesive tape (1) is attached to the mounting surface of the weather strip (10) by one adhesive surface as shown in FIG.

(2) is a protective liner that is releasably attached to the surface of the double-sided adhesive tape (1) attached to the weather strip (10) as described above, that is, the other adhesive surface. As the protective liner (2), for example, a tape made of a polyethylene film can be suitably used. In addition, a film or sheet material that can be peelably attached to the adhesive surface of the double-sided adhesive tape (1) can be used. The double-sided adhesive tape (1) is attached to the weather strip (1) with the protective liner (2) attached.

(3) Attach both ends of the protective liner (2) in the width direction at both locations in the longitudinal direction to serve as separating parts for separating the protective liner (2) from both sides in the width direction of the protective liner. It is a sheet-like tab piece for peeling.

The sheet-like tab piece (3) is bonded to one surface of a central portion of the sheet, for example, using a tape of a polyester resin as a base material (30) and leaving both ends (3a) and (3b) in the longitudinal direction thereof. It is composed of a layer provided with an agent layer (31). The adhesive layer (31) can be formed in the same degree as the width (W), corresponding to the width (W) of the protective liner (2) to be attached. It is more preferable to form it in a range slightly longer than the width (W) as described above, since it can be easily attached without requiring fine positioning in the attaching operation to the protective liner (2). In the case of the figure, a polyvinyl chloride resin film (32) is attached to both end portions (3a) and (3b) serving as knob portions to make it easier to hold.

[0018] The sheet-shaped tab pieces (3) are stuck to places set as separation portions of the protective liner (1) before the double-sided adhesive tape (1) is stuck to the weather strip (1). Alternatively, after the double-sided adhesive tape (1) is attached to the weather strip (1), it can be attached to a place set as a separation portion of the protective liner (2).

The sheet-like tab pieces (3) are attached in a direction substantially perpendicular to the longitudinal direction of the protective liner (2) as shown in the figure, and are also attached at a slightly oblique intersection. It is also possible. Further, the shape line of the sheet-shaped tab piece (3) can be formed into another shape such as a waveform.

In any case, as described above, after one sheet-like tab piece (3) is attached to a predetermined location in the length direction of the protective liner (2), as shown in FIGS. To
In the area of the sticking portion, a notch (4) that traverses obliquely from one side end to the other side end of the protective liner (2) and divides the sheet-like tab piece (3) diagonally is protected. It is formed to a depth reaching the liner (2).

For example, as shown in FIG.
When the area of the adhesive layer (31) is slightly larger than the area of the adhesive portion, a cut (4) is made on a line connecting the diagonal positions of the area of the adhesive layer (31), and the protective liner ( The two separated ends separated in 2) are located in the area of the sticking portion.

The notch (4) is not limited to a diagonal straight line as shown in the figure, but may have a wavy shape, a zigzag shape, or another bent shape to substantially obliquely form the sheet-like tab piece (3). May be divided. When the sheet-like tab piece (3) is stuck diagonally to the protective liner (2), a cut may be made in a direction substantially perpendicular to the protective liner (2).

As described above, after the sheet-like tab piece (3) for peeling is adhered to the protective liner (2) on the surface of the double-sided adhesive tape (1), the protective liner (2) can be separated and formed into a sheet. All that is required is to make a notch (4) for separating the tab pieces (3), and it is easier to stick than when two sheet-like tab pieces are aligned and stuck to the separated and adjacent end of the liner. It can be set, and as a result, both divided tab pieces are stuck to both separated liner ends without displacement.

Then, the cut (4) crosses the protective liner (2) from one end to the other end in the area of the adhesive section, thereby separating the protective liner (2) in the adhesive section. The ends are located, and therefore, by separating the tab pieces as shown in FIG. 4 and peeling them off, the separated liner ends can be reliably peeled off without error. In particular, when the separated end of the protective liner has a triangular shape as shown in the figure, if the tab piece is pulled in the direction of the arrow in FIGS. 2 and 4, the protective liner (2) separated from the triangular tip can be obtained. Is peeled off, and the initial peeling width is extremely small and easy to peel off, so that no peeling error occurs.

In the above description, the case where the double-sided adhesive tape (1) is attached to the automobile weather strip (10) has been described as an example. However, the present invention is not limited to this, and other various long or relatively large ones are used. When the double-sided adhesive tape is used in the form of a loop, it can be applied to peeling of the protective liner.

[0026]

As described above, according to the present invention, when the protective liner of the double-sided adhesive tape is separated and peeled at an arbitrary position in the longitudinal direction, particularly, one sheet-like tab piece for peeling is applied. It is only necessary to make a cut after attaching it, and it is possible to easily attach the tab pieces without requiring alignment, and to separate both liner ends at both separated tab pieces. It can be easily set in the state of being stuck.

In addition, since the separated end of the protective liner is located in the portion where the tab piece is adhered, the separated tab piece is peeled off by holding the separated tab piece, whereby the protective liner can be reliably peeled off from the separated liner end without error. be able to. Therefore, it is possible to contribute to simplification and efficiency of the work of peeling the protective liner when using the double-sided adhesive tape.

[Brief description of the drawings]

FIG. 1 is a partial perspective view showing one embodiment of the present invention.

FIG. 2 is a plan view in which a part of the above is omitted.

FIG. 3 is an enlarged sectional view taken along line AA of FIG.

FIG. 4 is a partial perspective view showing a peeled state of the protective liner.

FIG. 5 is a partial plan view showing a pasting state of a conventional strip tab. (1) Double-sided adhesive tape (2) Protective liner (3) Sheet-shaped tab piece (30) Base material (31) Adhesive layer (3a) (3b) Both ends (4) Cut

Claims (3)

[Claims] 1. When a protective liner, which is releasably attached to the surface of a double-sided adhesive tape, is separated and peeled at an arbitrary position in the longitudinal direction, the protective liner should be
After sticking the sheet-like tab piece for peeling in the direction crossing the protective liner, the sheet-like tab piece traverses from one side end to the other side end of the protective liner in the area of the sticking portion and is cut by two.
The double-sided adhesive is characterized in that the cut line is cut into the depth reaching the protective liner, the protective liner is separated together with the sheet-like tab pieces, and the protective liner is peeled off with the cut tab pieces. A method for removing a protective liner from a tape. 2. A sheet-like tab piece for peeling is adhered to both sides in the width direction of the protective liner so that both ends protrude as knobs, and one of the protective liners is provided in the region of the adhered portion. 2. The method for removing a protective liner from a double-sided adhesive tape according to claim 1, wherein a cut is made across the sheet-like tab piece from the side end to the other side end and diagonally divides the sheet-like tab piece. 3. A sheet tab for peeling is provided at an arbitrary position in a longitudinal direction of a protective liner which is removably attached to the surface of a double-sided adhesive tape, and both ends are provided on both sides in the width direction of the protective liner. The protective liner is provided with a notch that projects from the one side end to the other side end of the protective liner and diagonally divides the sheet-shaped tab piece in the area of the adhesive part by protruding and attaching as a knob part. A tab structure for peeling a protective liner in a double-sided adhesive tape, wherein the tab structure has a depth of at least one.