JP3222601B2 - Roll hair removal tape - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roll-shaped hair removal tape, and more particularly, to the use of a specific supporting base material, which imparts a hand-cutting property that can be freely cut to a size suitable for an application site. The present invention relates to a roll-shaped hair removal tape that facilitates hand-cutting operation and hair removal operation.

[0002]

2. Description of the Related Art Wax-type hair removal agents and creams and jelly-type hair removal agents containing hair removal agents have been known as hair removal agents for waste hair. In recent years, hair removal tapes using an adhesive have been used. I have. Wax-type, cream-type, and jelly-type depilatory agents have good hair removal properties because they are applied directly to waste hair and entangled, but with wax types, it is necessary to heat and melt until useable viscosity when used, There is always the potential for burns. Also, there is no need for heating for cream type or jelly type,
There is a problem in operability that the viscosity is extremely high and it is difficult to apply it to the surface of the applied skin.

On the other hand, a hair removal tape has a simple hair removal operation and has a good feeling of use. However, in general, an adhesive layer for hair removal is formed on one side of a self-supporting plastic film, and a protective layer is provided on the surface of the adhesive layer. There has been provided a sheet-like product obtained by laminating release paper and cutting it into a predetermined size.

[0004] However, such a sheet-shaped depilatory tape has to be removed one by one when sticking to the application surface to expose the pressure-sensitive adhesive layer surface. This peeling operation is extremely troublesome. Furthermore, since the hair removal tape is cut into a predetermined size as described above, when applying to a wide area of hair removal, many hair removal tapes must be used, and on the other hand, hair removal of a small area When applied to a site, the size of the hair removal tape is too large, which is uneconomical.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the conventional sheet-shaped hair removal tape, and does not require an operation for removing the release paper. It is an object of the present invention to provide a hair removal tape that can be used without any waste regardless of its size (area) and that has good operability.

[0006]

The inventors of the present invention have conducted various studies in order to achieve the above object, and as a result, it has become possible to eliminate the need for a release paper by forming a depilatory tape into a roll, and to provide a specific support base. It has been found that by using a material, a hand-cutting property in the width direction can be imparted to the supporting base material, and a depilatory tape that can achieve the above object can be obtained, thereby completing the present invention.

That is, the present invention provides a pressure-sensitive adhesive layer for hair removal on a surface of a porous substrate of a supporting substrate comprising a laminate of a porous substrate having hand-cutting properties in any direction and a plastic film stretched in the width direction. Is provided, and the tear strength in the width direction is 200 g or less.

[0008] In particular, a roll-shaped depilatory tape having excellent skin sticking operability is provided by designing such that a break occurs at the lamination interface between the porous substrate and the plastic film when cut by hand.

[0009]

EXAMPLES Examples of the roll-shaped epilation tape according to the present invention will be shown below, and will be described more specifically.

FIG. 1 is a side view showing an embodiment of the roll-shaped epilation tape of the present invention, and FIG. 2 is a longitudinal sectional view of a portion where the epilation tape is drawn out from the roll-shaped epilation tape A of FIG. FIG. 3 is a plan view of the feeding portion as viewed from the side of the pressure-sensitive adhesive layer.

As shown in FIG. 1, the hair removal tape A of the present invention is obtained by laminating a support base material 1 and a hair removal adhesive layer 2 on a ball core in a roll shape. As shown in detail in FIG. 2, the epilation tape A of the present invention is such that the support substrate 1 is formed by laminating a porous substrate 1a and a plastic film 1b, and the surface of the porous substrate 1a. The adhesive layer 2 for hair removal is formed on the surface. In the hair removal tape of the present invention, the release paper of the conventional sheet hair removal tape is not particularly required on the surface of the hair removal adhesive layer 2 in order to improve operability. In this case, although not shown, a fluorine-based resin or a silicone-based resin is provided on the surface of the support substrate 1 where the adhesive layer 2 for hair removal is not formed, that is, on the back surface (the lower side in FIG. 2) of the plastic film 1b. What is necessary is just to apply the release agent which consists of etc.

In FIG. 3, the pressure-sensitive adhesive layer 2 is not formed over the entire width of the supporting substrate, but is formed in a so-called two-sided dry edge shape. By patterning the pressure-sensitive adhesive layer 2 in this manner, it is preferable that the surface of the pressure-sensitive adhesive layer 2 is not contaminated with a finger when the hair removal tape is fed out, and the handleability is improved.
It goes without saying that the pressure-sensitive adhesive layer 2 may be formed over the entire width of the supporting base material.

FIG. 4 is a longitudinal sectional view for explaining the tape end after the roll-shaped epilation tape of the present invention has been cut to the required length. As is clear from FIG. 4, the end of the tape after the hand-cutting is broken at the lamination interface between the porous substrate 1a and the plastic film 1b constituting the supporting substrate 1. By adjusting the tear strength of the paper substrate in this way, the support substrate 1 undergoes delamination, and as a result, it is possible to create a tape end on which the pressure-sensitive adhesive layer 2 is not formed. In this case, when the hair removal tape of the present invention is unwound from the roll, there is no adhesive layer 2 at the end of the tape, so that the adhesive layer is not contaminated with fingers. In particular, the two-sided dry edge type as shown in FIG. 3 is more effective because it becomes a three-sided dry edge or a four-sided dry edge after hand-cutting.

In the roll-shaped depilatory tape of the present invention, the support substrate 1 holds the depilatory pressure-sensitive adhesive layer 2 on one side thereof, and is adhered to fine irregularities on the skin surface by its moderate flexibility. Wears and plays a role in providing excellent hair removal properties. The support substrate 1 is formed by laminating a porous substrate 1a and a plastic film 1b, and has a tear strength in the width direction (according to the method specified in JIS-P-8116) from the viewpoint of easy cutting. Adjust to 200g or less.

The porous substrate 1a located adjacent to the depilation pressure-sensitive adhesive layer 2 has a free cutting property in an arbitrary direction, and is capable of cutting in the width direction of the stretched plastic film 1b described later in the width direction. It follows the adhesive, and has an effect that the adhesive flow phenomenon during storage is suppressed by partially embedding the depilatory adhesive in the porous portion. The weight (basis weight) per unit area of such a porous substrate 1a is 25 to 150 g / m ² , preferably 40 to 80 g.
/ M ² , and the weight is 25 g / m 2.
^{When the} porous substrate 1a less than ² is used, the above-mentioned glue flow phenomenon cannot be sufficiently suppressed, and 150 g / m ²
When the porous base material 1a is used, sufficient flexibility cannot be imparted to the supporting base material, and the hair removal property may be reduced. The thickness of the porous substrate 1a is 50 to 500 μm,
It is preferable to set the thickness to about 100 to 300 μm from the viewpoint of adhesive flow prevention and flexibility.

The material of the porous substrate 1a is not particularly limited as long as it satisfies the above conditions. Specifically, non-woven fabric, woven fabric, knitted fabric, paper, etc. made of various plastics or pulp are used. Can be. Of these, it is preferable to use a paper substrate from the viewpoint of excellent hand-cutting properties in any direction and appropriate tear strength. As shown in FIG. 4, the tear strength in the width direction of the porous substrate 1a is required to be broken at the lamination interface between the porous substrate 1a and the plastic film 1b at the time of hand cutting. It is preferable to set the tear strength of the plastic film 1b or less.

On the other hand, the plastic film 1b, which is laminated on the porous substrate 1a to form the supporting substrate 1, has an adhesive for hair removal embedded in the porous substrate 1a, and a back surface of the supporting substrate 1, It does not come off and plays a role in preventing the support substrate 1 from breaking when performing a hair removal operation. Specifically, a plastic film having a thickness of about 5 to 30 μm or the like is preferable, and the supporting substrate 1 having a laminated structure can be obtained by bonding the porous substrate 1a to the porous substrate 1a by a heat compression method or a method using an adhesive. . Further, in order to improve the hand-cutting property in the width direction, the plastic film 1b in the present invention needs to be stretched in the width direction by an arbitrary stretching method. It is effective that the stretching ratio of the plastic film 1b is 100% or more, preferably about 300 to 800%.

The material of the plastic film 1b is not particularly limited as long as it has the above properties. For example, polyethylene, polypropylene, polyester, nylon, polyvinyl chloride, polycarbonate, ethylene / vinyl acetate copolymer and the like are used. be able to.

The support substrate 1 in the present invention is a laminate of the porous substrate 1a and the plastic film 1b.
Intermittent holes, so-called perforations, may be provided in the plastic film 1b.

The roll-shaped depilatory tape of the present invention can suppress the flow of glue during storage compared with the conventional depilatory tape by using the above-mentioned support base material 1.
There is no particular limitation on the hair removal adhesive formed thereon as long as it has hair removal properties. Preferred depilatory adhesives include, for example, styrene / isoprene (or butadiene) / styrene block copolymer, polybutadiene, polyisoprene, polyisobutylene, ethylene / vinyl acetate copolymer, ethylene / acrylic acid copolymer, polyethylene, chlorinated Adhesive resins such as various rosins, terpene-based resins, petroleum-based resins, and xylene-based resins, and various waxes may be added to a film-forming polymer such as polyethylene, if necessary.

[0021]

As described above, since the roll-shaped epilation tape of the present invention is wound in a roll shape using the supporting substrate made of a specific laminate, it can be cut into an arbitrary size, and Since the supporting base material has excellent hand cutting properties in the width direction, it is economical and has good operability.

[Brief description of the drawings]

FIG. 1 is a side view of an example of a roll-shaped epilation tape of the present invention.

FIG. 2 is a vertical cross-sectional view of a portion where the hair removal tape is unwound from the roll-shaped hair removal tape A of FIG. 1 (a portion surrounded by a chain line).
It is.

FIG. 3 is a plan view of a pay-out portion of the roll-shaped epilation tape of FIG. 1 as viewed from an adhesive layer surface side.

FIG. 4 is a longitudinal sectional view for explaining a tape end portion after the roll-shaped epilation tape of the present invention is cut to a required length by hand.

[Explanation of symbols]

 A roll-shaped hair removal tape 1 support base material 1a porous base material 1b plastic film 2 adhesive layer for hair removal

Claims (4)

(57) [Claims] An adhesive layer for hair removal is formed on a surface of a porous substrate of a supporting substrate comprising a laminate of a porous substrate having hand-cutting properties in an arbitrary direction and a plastic film stretched in a width direction. A roll-shaped epilation tape comprising a tear strength in the width direction of 200 g or less. 2. The porous base material has a basis weight of 25 to 150 g / m ^2.
The roll-shaped epilation tape according to claim 1, which is a paper base material. 3. The tear strength of the porous substrate in the width direction is equal to or less than the tear strength of the plastic film.
The roll-shaped epilation tape according to the above. 4. The roll-shaped epilation tape according to claim 1, wherein when the roll-shaped epilation tape is hand-cut, breakage occurs at a lamination interface between the porous substrate and the plastic film.