JPH0230427Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an improvement of a double-sided adhesive transfer tape.

BACKGROUND ART In recent years, double-sided adhesive transfer tapes, which are made by coating double-sided release paper with an adhesive film and rolling it into a tape, have been widely used. Compared to conventional double-sided adhesive transfer tapes using core materials, this type of double-sided adhesive transfer tape is a simple and ideal tape, but the following unresolved problems remain.

In other words, since a film-like adhesive is applied to the entire upper surface of the double-sided release paper, when it is rolled up into a tape, the adhesive sticks out to both sides, so the rolled tape cannot be stored in the automatic transfer device case. Not only does it become difficult to smoothly unroll the double-sided adhesive transfer tape when using the double-sided adhesive transfer tape, but the adhesive that protrudes inside the case sticks between the rolled tape and the case, making it impossible to smoothly rotate and unroll the double-sided adhesive transfer tape. becomes. Then, the portion protruding into the case is peeled off, and the double-sided adhesive transfer tape, which is partially devoid of adhesive, is pressure-sensitive transferred. In addition, when transferring this type of double-sided adhesive transfer tape to a desired location, the automatic transfer device is pressed strongly at the required end point and then pulled up to cut the double-sided adhesive transfer tape. It requires a lot of training and strength. In addition, there are other disadvantages of this type, such as not being cut at the desired end point, and when the automatic transfer device is pulled up, the adhesive piece is pulled up together with the adhesive, causing the already adhered part to be peeled off, or that the planned end point is not neatly arranged. The double-sided adhesive tape still has a fatal flaw.

As a means to solve these drawbacks, we have proposed a Utility Application filed in 1983 by the same inventor and applicant as the present application.
In the No. 120831 design, double-sided release paper exposed parts are formed on the upper and lower longitudinal parts of double-sided release paper, and double-sided adhesive pieces are continuous in the longitudinal direction on the double-sided release paper with a slight gap. Although the above-mentioned drawbacks were fundamentally solved by devising a double-sided adhesive transfer tape with the following characteristics, there still remains room for improvement as described below.

That is, if the width diameter of the double-sided adhesive piece itself is short and the exposed area of the double-sided release paper between the double-sided adhesive pieces is extremely narrow, it can be transferred to the desired position.
Such a configuration is difficult to manufacture because it requires extremely complicated and sophisticated equipment.

Even if such a double-sided adhesive transfer tape were to be made, the gaps between each adhesive piece in the vertical direction would be extremely small, so adjacent adhesive pieces would come into contact with each other when the tape was wound, resulting in There is a strong possibility that the form will be similar to that of double-sided adhesive tape. Therefore, the width diameter of the adhesive pieces and the gap between the adhesive pieces must have a certain width. However, when the width is widened, each gap (non-adhesive-applied area) between the adhesive strips cannot be seen from above the transfer device, so even if you intend to cut at the desired location, the end of the adhesive strip may end up in an unplanned location. If it is hot or the part you want to end is still in the middle of the double-sided adhesive strip,
A certain amount of error will occur. This is especially a problem when it comes to objects to be bonded that require precision in bonding position.

The present invention solves these problems, allows double-sided adhesive to be easily and accurately cut at a desired position without causing any errors, and also prevents the adhesive from protruding to both sides. The purpose is to provide a double-sided adhesive transfer tape that can be used.

The structure of the present invention is a transfer tape made by coating double-sided release paper with adhesive and rolling it into a tape shape.
The adhesive is applied on the double-sided release paper in a plurality of dots with small gaps between each other, and the adhesive is applied in dots on the upper and lower sides of the double-sided release paper in the longitudinal direction. The present invention relates to a double-sided adhesive transfer tape characterized in that it is not coated with an adhesive, and will be described as follows based on an embodiment shown in the drawings.

In the embodiment according to the present invention shown in FIG. 1, reference numeral 1 in the figure is double-sided release paper;
A plurality of dotted adhesives 4 are applied to the portions other than the lower part 3 with narrow gaps 5 between them. According to this embodiment, unlike the conventional example in which adhesive pieces with a width are continuous with gaps, it is possible to easily and accurately transfer the adhesive on both sides at a desired end point. Furthermore, if the adhesive dots 4 are aligned in the longitudinal direction with respect to the longitudinal direction as in the other embodiments of the present invention shown in FIGS. Can perform adhesive transfer work. Furthermore, when the adhesive is dispensed from the automatic transfer device 6 as shown in FIG. 4 and used, since the adhesive is in the form of dots, automatic transfer can be performed very easily, orderly, and accurately by releasing the pressed state. It is. In addition, since a plurality of dotted adhesives are densely applied at small intervals, they have sufficient adhesive strength.

In particular, in the case of the present invention, since the dotted adhesive 4 is not applied to the upper and lower parts of the rolled tape-shaped double-sided adhesive transfer tape, the dotted adhesive 4 protrudes from both sides, making it difficult to smoothly feed out the tape. Of course, there is no risk that it will become difficult to move, or that it will adhere to the inner wall of the automatic transfer device case and that a smooth feeding state will not be obtained at all.

Therefore, according to the present invention, smooth rotation and unwinding from the wound tape, which is the most important aspect of this type of tape, can be ensured, and in turn, the accuracy of the adhesive transfer position and the transfer operation can be ensured. This invention solves all the drawbacks of the improved double-sided adhesive transfer tape, which has problems such as difficulty and complexity in manufacturing, and can exhibit the excellent effects described above.

[Brief explanation of the drawing]

FIG. 1 is a schematic front view showing one embodiment of the double-sided adhesive transfer tape of the present invention, FIG. 2 is a schematic front view of a double-sided adhesive transfer tape showing another embodiment, and FIG.
Schematic side view of the double-sided adhesive transfer tape shown in Figure 4.
The figure is a schematic perspective view showing the use of an automatic transfer device equipped with the double-sided adhesive transfer tape of the present invention. 1... Double-sided release paper, 4... Dotted adhesive, 6...
Automatic transcription machine.

Claims (1)

[Scope of utility model registration request] In a transfer tape formed by applying an adhesive to double-sided release paper and rolling it into a tape shape, the adhesive applied to the double-sided release paper is applied in a plurality of dots with small gaps between each other, and A double-sided adhesive transfer tape characterized in that dotted adhesive is not applied to the upper and lower longitudinal parts of the double-sided release paper.