JPS6156648A - Double-sided tape - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improvements in double-sided tapes, and particularly to double-sided tapes suitable for use in individually wrapped sanitary napkins.

Double-sided tape has been used in a variety of fields in recent years. This kind of double-sided tape is generally stored in a rolled state when not in use, so one side of the adhesive layer, which is coated with adhesive on both sides of the support, is peeled on both sides of the paper base. The structure is such that a release paper coated with an agent (exclusively silicone) is attached. That is, with this configuration, one of the outermost surfaces is coated with an adhesive, and the other outermost surface is coated with a release agent, so that the outermost surfaces of those in contact in the wound state are coated with an adhesive. The outer surfaces are easily peeled from each other and ready for use. Therefore, during use, by peeling off the release paper through the inner release agent (ff1lJ # agent directly attached to the adhesive layer), an adhesive other than the above-mentioned outermost layer adhesive is exposed. and used for the desired purpose.

Such double-sided tapes are also widely used in the field of sanitary napkins. That is, the tape is adhered to one side of the sanitary napkin through the adhesive on the outermost surface of the double-sided tape, and when used, as described above, the release paper is peeled off through the abrasions on the inside, and a new By fixing the sanitary napkin to clothing via the exposed adhesive, the napkin is prevented from slipping when worn. However, recent sanitary napkins are individually wrapped in polyethylene film etc. for hygiene reasons, and in such cases, if the conventional double-sided tape as mentioned above is used as is,
After opening the individual packaging, it was cumbersome because it was necessary to peel off the release paper from the double-sided tape.

An object of the present invention is to eliminate such problems with conventional double-sided tapes and to provide a double-sided tape suitable for use in individually wrapped sanitary napkins.

Structure and effect of the tip The present inventor discovered that while silicone was exclusively used as a stripping agent in conventional double-sided tapes, a material different from silicone was used as a stripping agent on the outermost surface. The inventors have discovered that the above object can be achieved by the above methods, and have devised the present invention. Namely, the present invention is a double-sided tape used for fixing individually wrapped sanitary napkins to clothing, which comprises a support material. A release paper coated with a release agent on both sides of the base paper is pasted on one side of the adhesive layer coated with an adhesive on both sides of the base paper, and one outermost surface is coated with the adhesive, Further, in the double-sided tape in which the release agent is coated on the other outermost surface, the release agent coated on the outermost surface is made of a substance having a lower melting temperature than the material used to package the sanitary napkin. The purpose is to provide a double-sided tape with special characteristics.

If the double-sided tape of the present invention having such a configuration is used, a sanitary napkin can be attached to the tape via the adhesive coated on the outermost surface, and the release agent coated on the other outermost surface can be used to bond the tape to the sanitary napkin through the adhesive coated on the outermost surface. After the sanitary napkins are individually packaged so as to be in contact with the material, heat is applied to the packaged sanitary napkins at a temperature higher than the melting temperature of the release agent on the outermost surface and lower than the melting temperature of the packaging material. In this way, the sanitary napkin is packaged with the release agent on the outermost surface of the double-sided tape adhered to the packaging material. Therefore, when the packaging material is opened when the sanitary napkin is used, the release paper is peeled off along with the packaging material while remaining attached to the packaging material, and there is no need to peel off the release paper itself.

The release agent on the outermost surface of the double-sided tape according to the invention has a lower melting temperature than the packaging material of the sanitary napkin, and
As mentioned above, when the double-sided tape is stored in a wound state, it is necessary to have excellent peelability against the adhesive. From these points of view, a particularly preferred release agent is paraffin wax. Paraffin wax (melting point 40-100℃)
has a lower melting temperature than polyolefin materials that are often used as packaging materials (for example, the melting temperature of polyethylene is approximately 110 to 140°C), easily adheres to packaging materials when heated, and is compatible with various adhesives. It also has excellent removability.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In order to facilitate understanding of the present invention, the present invention will be described below with reference to embodiments shown in the drawings.

FIG. 1 shows a partial new side view of a typical example of a double-sided tape according to the present invention. As shown in the figure, the double-sided tape is generally composed of an adhesive layer A and a release paper B. The adhesive layer A is made of a suitable support (for example, rayon paper)2.
Adhesives 1 and 3 are coated on both sides of the adhesive iA, and a release paper B is attached to one side of the adhesive iA. Release paper B is constructed by coating paper 5 as a base material with release agents 4 and 6 on both sides. Thus, the first
As shown in the figure, the double-sided tape has an adhesive 1 coated on one outermost surface and a release agent 6 coated on the other outermost surface. When such a double-sided tape is not in use, it is stored in a rolled state, and at this time, the outermost adhesive layer 1 and the release agent 6 come into contact with each other, but the release agent 6 is easily separated from the adhesive 1. It functions to peel off. Therefore, in conventional double-sided tapes, both release agents 4 and 6 are silicone, but in the double-sided tape of the present invention, a low melting temperature substance such as paraffin wax is used as the outermost release agent 6. .

An example of a sanitary napkin using such a double-sided tape of the present invention is shown in FIG. That is, sanitary napkin 7
With the double-sided tape adhered to the surface of the sanitary napkin via the adhesive 1 on the outermost surface, the sanitary napkin is wrapped in a suitable packaging material 8 (for example, a polyethylene sheet), and the release agent 6 on the outermost surface is attached.
is in contact with the packaging material 8. In this way 9, when the packaging material is heated at a temperature higher than the melting temperature of the release agent 6 and lower than the melting temperature of the packaging material 8 (in the direction of the arrow in the figure), the double-sided tape passes through the release agent 6. In this way, individually wrapped napkins that are adhered to the packaging material 8 are obtained. Thus, when the packaging material is opened when sanitary napkins are used, the release paper portion of the double-sided tape (B in Figure 1) adheres to the packaging material and peels off, exposing the viscous agent 3. When the adhesive 3 is brought into contact with clothing, the sanitary napkin is fixed to the clothing. It should be noted that FIG. 2 is for mere illustration, and it goes without saying that the shapes of the sanitary napkin and packaging material, the arrangement of the double-sided tape, etc. are not limited to the illustrated embodiments.

[Brief explanation of the drawing]

FIG. 1 is a partial side sectional view of the double-sided tape of the present invention. FIG. 2 is a side sectional view showing an example of an individually wrapped sanitary napkin using the double-sided tape of the present invention. 1 and 3...Adhesive, 2...Support, 4 and 6
... Release agent, 5... Base paper, 7... Sanitary napkin, 8... Packaging material.

Claims (2)

[Claims] (1) A double-sided tape used to fix individually wrapped sanitary napkins to clothing. A double-sided tape in which a release paper coated with a release agent is pasted, one outermost surface is coated with the adhesive, and the other outermost surface is coated with the release agent, and the outermost surface is coated with the release paper. A double-sided tape characterized in that the coated release agent is made of a substance having a lower melting temperature than the material packaging the sanitary napkin. (2) The double-sided tape according to claim (1), wherein the release agent coated on the outermost surface is paraffin wax.