JPS60127379A - Double-side tacky tape and its preparation - Google Patents

Abstract

PURPOSE:Peeling films are applied onto both surfaces of the double-side adhesive tape and the resultant tape is punched in a certain form, further open windows are formed in the tape leaf to give the titled tape which is set between parts for assembling electronic appliances. CONSTITUTION:The cutting line 18 is incised on a band tape composed of the double-side tacky film 11 and peeling layers 13 and 15 so that the upper peeling layer and tacky film are punched off in a certain form 14 and untacky treatment 19 is applied to the periphery of the punched-off part 15 of the upper peeling layer. Then, a tag 26 a little larger than the punched-off part is set and the cutting line 24 is incised to remove the tacky layer outside the punched-off part and the upper peeling layer 15. Then, the tag 26 is used to peel off the upper layer 15 from the tacky film 11 and another peeling film which is larger than the resultant tacky film is stuck on the film 11 to give the objective adhesive tape of a specific shape.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention mainly relates to a portable electronic meter 3! This invention relates to a double-sided layered tape that is inserted into and used in the assembly of TV receivers, channel control panels of TV receivers, and other types of equipment for people with disabilities, and an automatic mechanical manufacturing method thereof.

With existing double-sided adhesive tapes, K
The double-sided adhesive film (1) and the pair of release Ns (2) and (3) attached above and below it are made to have the same size and outline shape, and are spread over a total of three layers. Insert a cut-out window (
4) (5) (6) are usually cut out,
Such a structure is not limited to the case where the above-mentioned 3 nos form a continuous belt-like form, but is also exactly the same when forming a sheet form cut into sections of a certain size, such as a rectangular outline, for example. ing.

However, in such a configuration, there is no release film (two-bar release type), and the double-sided adhesive film (1) is extremely thin and flexible, so the adhesive film (1) is not used as the release film. (2)
(3) It is difficult to peel it off with your fingertips.

Be sure to use tools such as a bottle set and carefully 4.
Since it has to be peeled off skillfully, it is extremely complicated and hinders the ease of assembling the above-mentioned equipment. In addition, during the peeling process, the adhesive film (1) is likely to become a defective product, and there is also the problem that it is often necessary to discard the adhesive film (1).

However, in terms of the manufacturing method of the double-sided layered tape, a pair of upper and lower 1m type membranes (2) (3) sandwiched intermediate J-
The double-sided adhesive film (υ) of the release film (2) (3) is also made into a smaller sheet form to ensure peelability;
Moreover, the adhesive film (1) itself is independent of each other.
At present, it is impossible to further cut out the escape window (5) for the operation button, etc. (so-called shape cutting) into the inside of the outline section, and therefore, the above-mentioned problem inevitably occurs.

The present invention aims to provide a double-sided adhesive tape that is useful for solving these problems, and a manufacturing method that is optimal for its mass production.The details of this invention will be explained based on drawings. In Figure 2 showing the basic example, Q
υ is made of both If + adhesive film, and is made of very thin, flexible and strong Japanese paper, etc., impregnated or coated with a pressure-sensitive adhesive.
4 (3) is a pair of upper and lower release films attached to the adhesive surface, both of which are made of paper or synthetic resin film. Not cheap.

In the present invention, the above-mentioned double-sided layer group U is
It is die-cut into an outline shape (rectangular in the example below), and inside the section of the outline, there are also a number of operation buttons (7 small rectangles in total in the example). The die-cut window uItl used for this purpose is also die-cut and has a sheet-like form as a whole. 1. A plurality of adhesive films 0v, each of which is in the form of a single sheet, are sandwiched from above and below by continuous strip-shaped release films affixed to both sides. be.

However, the body of the contact N membrane Q sword itself is like the above, sea urchin type G,
As shown in the modified example of FIG. It is okay to attach it to one side. Alternatively, one or both of the release films may be made transparent so that the state of the adhesive film Uυ extending between them can be visually recognized from the outside.

In any case, in the present invention, as is clear from FIG. 4, which corresponds to FIG. The distance between the upper and lower release films O4 and the lower release film O4 and the adhesive film V, respectively, is determined to be large. Although size differences are given to the mutually peelable type (81) and (82) with the mold film, they may of course be of the same size. Therefore, during storage of the double-sided layer tape, its adhesiveness Uυ Both mold release films 404
This means that it is completely protected from dirt, dust, etc. Also, as suggested from Figure 2.3, the adhesive film 0
Each υ is in the form of a single leaf, and multiple pieces are arranged and pasted in a dotted manner at a constant distance Ω, so
There is no need to cut this with a separate tool, and the 4μ barrel of the release film can be peeled off as it is (81). It can be used for assembly.

The above-mentioned screen adhesive tape of the present invention is produced by the following automatic mechanical force. That is, Fig. 5 is a schematic explanatory diagram of the manufacturing process, and Figs. 6 to 13 are new processing state diagrams roughly corresponding to each process. A continuous-shaped strip consisting of three layers: a double-sided adhesive film Qη such as the one shown in FIG. Then, during the automatic and intermittent transfer of this material (goods) from the feed roll aQ of the manufacturing device to the take-up roll Uη,
Steps (a) to (b) are performed sequentially.

First, as the first step (-) in FIG.
! 1, as shown in Fig. 7.8, the size and contour shape of the above-mentioned cutout window α are defined. (11
9 is carved all at once and cut out, followed by the second step 6u (b
), an anti-adhesion layer of a certain size is applied by UV silicone printing or the like to the upper part of the mold release plate facing the area around the section of the cutout window U◆. In this regard, in the example shown in the figure, by mechanically connecting and integrating the die-cutting car at section cut line 4 and the inkuri plate υ, 9, il, 2-work i (a
) (1') are performed at the same time, but it would be no different if they were performed separately, one after the other in time. Thereafter, the anti-adhesion layer is dried using a dryer (2).

Next, in the third step (C), the N-contact film Qυ and its upper mold release film 4 facing the inside of the section of the extraction window U41 are removed as shown in FIG. 9. At this time, an anti-adhesion layer was applied to the upper part of the release film 4 that occupies the periphery of the section of the window U plaster in advance, in order to prevent it from peeling off even outside the section of the window U plaster. Its removal can be accomplished by inserting a separate adhesive sheet attached to the upper part of the release film as shown in FIG. It is possible to leave the lower mold release film μ4 as it is by varying the adhesive strength between the upper 11111ffl film U1 and the lower mold release film with respect to the adhesive film αυ. .

In the subsequent fourth step (d), in order to die-cut the desired single-leafed W near & - membranous Qυ-eye buds, the outer shape-circle section cut IfMCI4 is engraved with the die cutting blade). As is clear from Figure 10.11, the section cut line (to) of the adhesive film υ itself is left on the upper mold release film u4 to act as an adhesive for the ear part. I'll keep it. This cut scarlet (to) is also engraved across the two layers of the contact layer m (Iυ and the upper mold release film 05, and the above-mentioned first
This is the same as step (a).

In the subsequent fifth step (e), the upper mold release film M facing the outside of the section of the contact M film 0υ itself and the adhesive film υ are increased by 1 to 12.
Remove as shown. This removal is also done in the third step (Q
), a separate adhesive sheet (2) is also added to the upper release film Qt! This can be done by inserting a sticker into the l. Then, in the sixth step (f), another contact sheet (7) is inserted and set, and while it is attached to the above-mentioned ear part (4) remaining on the upper mold release film 4, the upper The mold release film μ9 is peeled off from the adhesive film aυ as shown in FIG. In other words, since the above-mentioned anti-adhesion layer is said to have no contact force with the adhesive sheet, the above-mentioned ears are used for removing the upper part of the film where it is applied. I understand.

In the state after the above process, 2 [!
1) Upper mold release M (to) is completely eliminated, contact layer (2)
The die-cutting window is also exposed on the remaining lower mold release film 4 as an independent sheet with a die-cut opening. Mold membrane 1.
As a so-called replacement of 1f9, a new upper release film (2) larger than the adhesive film Uη itself is pasted on one side of the adhesive film Uη. In this way, the double-sided adhesive tape of the present invention having the peel-off type (81) CF3 shown in FIG. 2.4 is completed. In contrast to the basic example of , a new band-shaped upper mold release M (6) of a corresponding continuous form is attached to the inserted and set state by a roll, and each of these is 1,
It goes without saying that it is possible to sequentially attach the film to the adhesive film aυ in the form of a single sheet that is independent of the film, and in this case, the modification shown in FIG. 3 can also be mass-produced. In addition, in the case of the illustrated example, although the lower release film portion 4 maintains the original state of the tape material,
This can also be replaced with a new lower mold release film at any point in the series of steps described above. Others, code 9 in the figure! ! 4 is a positioning pin hole.

As described above, the double-sided adhesive tape of the present invention has one double-sided surface tit7U (
IJI and a pair of upper and lower release films U4 attached to both sides
It is made of three layers with ua, and the size of the release film is set larger than that of the adhesive film described above, and the peeling type (al) is made.
(Sz) and the required number of cut-out windows 041 are opened inside the compartment of the adhesive film Uυ itself. After correctly peeling off the adhesive film (b), it can be inserted and set into various types of equipment, and the assembly can be carried out with high efficiency, and all the problems with existing products mentioned at the beginning can be reliably solved. There is.

In addition, the method for manufacturing the double-sided adhesive tape includes a double-sided layer film aυ and a pair of upper and lower release films u pasted on both sides of the film in advance.
Strip tape material in continuous form consisting of three layers with FIua (
During the automatic intermittent transfer of the material using the material), the actions of steps (a) to (g) described above in steps 1 to 7 are performed. Since it is designed to be added, it is possible to maximize the mass production effect of the double-sided adhesive tape for which it is intended.
Therefore, it can be said that it is an extremely practical invention that can be used mainly by inserting it into portable electronic calculators, channel control panels of television receivers, and other electronic devices.

4. Detailed Description of the Invention Figure M1 is a sectional view showing an existing double-sided adhesive tape, Figure 2 is a partially cutaway plan view of a double-sided layered tape according to the present invention, and Figure 3 is a book corresponding to Figure 2. FIG. 4, a partially cutaway plan view showing a modified example of the product of the invention, is an enlarged sectional view taken along the line X-x in FIG. 2.3, and corresponds to FIG. 1. FIG. 5 is a schematic explanatory diagram showing the manufacturing process of the double-sided adhesive tape in the present invention, FIG. 6 is a sectional view of the strip-shaped tape material corresponding to FIG. 4, and FIG.
The figure is a partial plan view showing the operating state of the 1.2 step, FIG. 8 is an enlarged sectional view taken along the line X-X of FIG. 7, and FIG. FIG. 10 is a partial plan view corresponding to FIG. 7 showing the operating state of the fourth step, 11th mtri FIG. 10 f)
zili! The enlarged 41 blood diagram of jK4 and Fig. 12.13 are cross-sectional views each showing the operating state of step 5.6.

(1) μυ・・・・・・Double-sided layer film (2) (3)
U ruku u, g4... ・・・・・・Release hsu1 (4)
(5 bars at U41......Nukimado Kuijo...
・・・・・・Division cut line 4・・・・・・・・・Adhesion prevention layer 4）・・・・・・Die cutting blade (4)・・・・・・・・・Ear part 1■・・・・・・Band tape material (dt) (Sz
)・・・・・・Peelable type (a) to (g)・・・・・・
...Applicant for patents 1st to 7th: Yasushi Moriyama, patent attorney: Kenji Yamashita

Claims (1)

[Scope of Claims] 1. A double-sided adhesive film in the form of a sheet cut into sections of a certain size, and a pair of release films affixed upwardly and downwardly inwardly. 3.
The size of the release film is determined to be larger than that of the above-mentioned contact/N junction, and a peelable type is formed, and the required number of cut-out windows are opened inside the compartment of the adhesive film itself. A double-sided adhesive tape featuring: 2. The double-sided adhesive tape according to claim 1, wherein the release film is a continuous paper or synthetic resin film that is commonly attached to a plurality of double-sided adhesive films. 6. The double-sided adhesive tape according to claim 1, characterized in that either one of the release films is a sheet of paper or a synthetic resin film that is attached to each of the double-sided adhesive films. 04. The double-sided slightly increased tape according to claim m1, characterized in that both rkJ contact films of the intermediate layer can be seen through from either or both of the release films. 5. Using a continuous tape material consisting of three layers: a double-sided layer film and a pair of release films pasted on both the upper and lower surfaces of the tape material, during automatic transfer of the tape material. , a ml step in which cut lines for the cut-out windows are carved across the two layers of the adhesive film and the upper part of the release film, and a cut line of a certain size is cut into the upper release film at the periphery of the cut-out windows. The second step is to apply adhesion prevention J-, the third step is to remove the two layers of the upper mold release film and adhesive film that also face the inside of the compartment of the extraction window, and the target compartment cut line of the adhesive film itself. Assuming that the size of the above contact prevention layer is also large,
Similarly, there is a fourth step of engraving across the two layers of the upper mold release film and the adhesive film, and a fourth step of removing the two layers of the upper mold release film and the adhesive film outside the section of the adhesive film itself. The sixth step is to peel off the upper release film from the adhesive film by using the selvedges left on the upper release film based on the size difference between the adhesive film itself and the anti-adhesion layer. and a seventh step of applying a new release film that is larger than the adhesive film itself, as a replacement for the upper release film, on the top surface of the adhesive film that has been completely exposed. A method for manufacturing Ryoichi adhesive tape, which is characterized by: 6. The method for producing a double-sided adhesive tape according to claim 5, characterized in that the anti-adhesion layer applied to the upper release film is a printed layer of UV silicone. 1. Claims characterized in that the adhesive strength between the double-sided adhesive film and the upper mold release film and the adhesive strength between the adhesive film and the partial mold release film are mutually varied in strength. A manufacturing method for double-sided adhesive tape.