JPS6131746B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention relates to a method for manufacturing a lined adhesive tape using a fabric having a texture or stitches as the liner. Conventionally, when manufacturing an adhesive tape with a thin interlining with gaps using a solution of an adhesive substance dissolved in a solvent, the solution of the adhesive substance is generally coated on release paper using a doctor knife coater or a roll coater. is applied to a certain thickness, then the interlining is crimped with a crimping roll, and after drying,
The interlining was rolled up together with release paper and cut to a specified width to make the product. However, in this type of method, since the roll surface used for crimping the interlining is smooth, the entire interlining is crimped with a uniform force as shown in FIG. In addition, the first
The figure is an explanatory diagram showing a case in which an interlining is pressed into an adhesive solution using a pressure roll with a smooth circumferential surface.
2 represents a release paper, 2 represents an adhesive solution, 4 represents an interlining, and 5 represents a pressure roll. Therefore, in such conventional methods, the adhesive solution penetrates all the way up to the top of the interlining, so that even if the interlining is subsequently dried, a tape is obtained that is sticky on the entire back side. Therefore, even after winding and cutting, a release paper is required to prevent adhesion between the tapes when it is made into a product.As a result, when using adhesive tape, it is time consuming and cumbersome to remove the release paper. It was hot. The present invention was made in view of the above circumstances, and an object of the present invention is to provide a method for manufacturing an adhesive tape that is convenient to use and does not require a release paper as described above because it has removability on the back side. do. For this reason, the method for manufacturing the adhesive tape of the present invention is as follows:
One side of a fabric having a texture or stitches is brought into contact with the adhesive liquid, and the other side of the fabric is partially pressed so that the adhesive liquid is partially applied onto the other side. By leaching it, drying it, and then winding it up into a tape shape, it is possible to produce an adhesive tape in which a layer of adhesive material is laminated over the entire surface on one side and partially on the other side. . DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of the present invention will be described in detail below based on an embodiment of the present invention shown in the accompanying drawings. FIG. 2 is a partial plan view of an example of the adhesive tape according to the present invention, and FIG. 3 is a sectional view thereof, showing the interlining 4.
A layer 2' of adhesive material is fully laminated on one side, and a layer 2'' of adhesive substance is partially laminated on the other side. An adhesive tape constructed as above is manufactured. To do this, as shown in FIG. 4, a solution 2 of the adhesive substance is applied onto the release paper 1 to a certain thickness using a roll coater 3 or a doctor knife coater, and then as shown in FIG. The solution 2 is pressed onto the interlining 4 by pressing the interlining 4 with a pressure roll 5 whose peripheral surface is not smooth and has grooves, and after drying in a drying oven 6, it is peeled off. The tape 8 is wound together with the paper on a take-up roll 7. Next, the tape 8 thus wound is rewound on an unwinding roll 9, and while the release paper is peeled off, the release paper is wound on a release paper winding roll 10 and the adhesive is removed. Separately, the lined adhesive tape is wound to a specified length using a tape winding roll 11, and cut to a specified width to produce a product.The adhesive material used in this case is not particularly limited, and may be a general Note that, as shown in FIG. 5, after leaving the drying oven 6, the adhesive tape may be cooled with a cooling roll 13, and then the adhesive tape may be wound up while removing the release paper. In addition to a roll having grooves on the circumferential surface as shown in FIG. 6, a so-called embossed roll having unevenness on the circumferential surface may be used.
In the present invention, as described above, since the interlining is pressed into the solution of the adhesive substance using such a pressure roll, the solution of the adhesive substance soaks into the crimped part of the interlining, but the solution of the adhesive substance soaks into the pressed part of the interlining. In the areas that are not crimped, the surface of the interlining will rise from the adhesive solution (No. 7).
(See figure). Therefore, when the adhesive tape is directly dried in a drying oven, it is possible to produce an adhesive tape with the interlining surface partially exposed. Note that this manufacturing method is extremely effective when the interlining is thin, the finished density is low, and there are gaps. The adhesive tape obtained as described above has the surface of the interlining partially exposed on the back side.
Since releasability is obtained for the adhesive substance on the release paper side, even if the release paper has been removed, the tape can be easily peeled off without any resistance when used. Therefore, according to the present invention,
When using adhesive tape, it is possible to save the time and effort required to remove the release paper, and in addition, the release paper used during the manufacturing process can be rolled up before the adhesive tape is cut, making it easy to remove it. Another advantage is that paper can be recycled. Hereinafter, the present invention will be explained in more detail by way of examples. Example 1 100 parts by weight of the materials shown in Table 1 were mixed using a Banbury mixer and rolls and formed into a sheet.
and as a tackifier, polybutene (polybutene
20 parts by weight of HV-300, Nippon Petrochemical Products) and 10 parts by weight of polyisobutylene (Vistanetx LMMS, Exxon Chemicals) were dissolved in 380 parts by weight of toluene, and the viscosity was 15000 cps (25°C, B-type rotational viscometer). Prepare a solution of the adhesive substance and apply it to a thickness of 0.20 mm on release paper using a roll coater at a coating speed of 5 m/min. Using thin stockinette with 45 courses of wales as an interlining, it was crimped onto a roll made by winding aluminum wire with a diameter of 2 mm around a smooth roll with a diameter of 50 mm without gaps, and dried in a drying oven with hot air at 80°C for 3 minutes. After that,
It was rolled up with release paper. Next, while unrolling, remove the release paper and
The adhesive tape was wound to a length of 25 m around a core with a diameter of 38 mm, cut to a width of 25 mm, and the release paper was removed to create a product. This tape could be easily removed when removing the tape. Furthermore, in order to measure the ease of peeling off the tape, the unwinding force of the tape was measured using the test method described in JIS Z1524.
g/10mm.

[Table] Comparative Example 1 A solution of the same adhesive substance as in Example 1 was similarly applied onto release paper to a thickness of 0.20 mm using a roll coater, and the same interlining was crimped with a smooth roll with a diameter of 50 mm. After drying in a drying oven with hot air at 80°C for 3 minutes, it was rolled up with release paper. Next, as in Example 1, remove the release paper while unwinding and leave only the adhesive tape with a diameter of 38 mm.
It was wound to a length of 25 mm around a mm core, cut to a width of 25 mm, and the release paper was removed to create a product. Although this tape can be removed, it cannot be removed unless it is pulled strongly. Therefore, since the interlining is made of elastic stockinette, the part that is removed may stretch or the width may change. Sometimes it would shrink and become a whole ball. Furthermore, during peeling, there was a problem in that the adhesive material was peeled off to the back of the next layer in some places, necessitating the use of release paper.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing a case in which an interlining is crimped onto a solution of an adhesive substance using a pressure roll with a smooth circumferential surface, and FIG. 2 is a partial plan view of an example of the adhesive tape according to the present invention. Figure 3 is a cross-sectional view of the adhesive tape.
FIG. 4 is an explanatory diagram showing one embodiment of the method for producing an adhesive tape of the present invention, FIG. 5 is an explanatory diagram showing another embodiment of the method for producing an adhesive tape of the present invention, and FIG. 6 is a front view of an example of a pressure roll used in the manufacturing method shown in FIGS. 4 and 5.
Figure b is a front view of another example of the pressure roll, and Figure 7 is
FIG. 6 is an explanatory view showing a case where an interlining is pressed onto a solution of an adhesive substance using the pressure roll shown in FIG. 6a; 1...Release paper, 2...Adhesive substance solution, 2',
2″...layer of adhesive substance, 4...interlining, 5...crimping roll.

Claims (1)

[Claims] 1. When producing an adhesive tape in which a layer of adhesive material is laminated over the entire surface on one side and partially on the other side, one side of a fabric having a weave or stitch is immersed in an adhesive liquid. An adhesive tape characterized in that the liquid of the adhesive substance is partially leached onto the other surface by contacting the fabric and partially pressing the other surface of the fabric, and winding it up into a tape shape after drying. manufacturing method.