JPH09103320A - Hand cuttable depilatory tape roll - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently depilate in a low cost and facilitate the handling of a depilatory tape while easily cutting the tape to a size corresponding to a part requiring the depilation of hair. SOLUTION: In a depilatory tape in which a depilatory tape 4 having an adhesive agent 2 for depilating hair applied on one surface side of a base material 1 made from a polyester film is wound in a roll, the base material 1 made from the polyester film is made up of an extensible film extensible in width direction. Its 45 deg. cantilever based rigidity/softness is 5.3cm or more in the longitudinal direction and 14.7cm or less in the width direction. This achieves easier cutting of the tape with a hand across the width thereof while improving adhesion and depilatory rate for a part requiring the depilation of hair.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hand-tearable depilatory tape roll, and more particularly to a hand-tearable depilatory tape roll that is easily cut according to the hair-removing portion of hair on the arm or leg, for example. It is a thing.

[0002]

2. Description of the Related Art Conventionally, in order to remove hair on the arms and legs, for example, a pressure-sensitive adhesive layer for hair removal is applied to one side of a film-like substrate, and release paper is polymerized and adhered to this adhesive layer. There is known a hair removal sheet (see JP-A-60-38320). To use this epilation sheet, peel off the release paper to expose the adhesive layer, attach this epilation sheet to the part of the body surface that requires epilation, and then peel off the epilation sheet in the direction opposite to the hair direction. Perform hair removal.

There is also known a depilatory tape (see Japanese Utility Model Laid-Open No. 3-63324) in which a pressure-sensitive adhesive for depilation is applied to one side of a tape-shaped substrate made of polyethylene film. According to this hair removal tape, the tape-shaped substrate can be cut in accordance with the part of the body that requires hair removal, and the tape-shaped base material can be attached to the part that requires hair removal to perform hair removal in the same manner as described above.

[0004]

However, the former, ie, epilation sheet, has a problem that it cannot correspond to the area of a site requiring epilation because the size of the sheet is limited, and peeling paper is peeled off. However, there is a problem that it takes time and labor to use it. Furthermore, besides the use of release paper, it is necessary to apply the pressure-sensitive adhesive layer in a pattern, and a step of cutting into a predetermined size is required, which causes a problem of increased cost.

Further, the latter, that is, the epilating tape can be used after being cut into a predetermined size, and thus is more convenient to handle than the epilating sheet. Since it has a structure in which papers are laminated in order to give the hair, the whole becomes opaque, and there is a problem that the hair cannot be accurately adhered and removed at a site requiring hair removal. Moreover, in addition to having a three-layer structure in which a polyethylene film, an adhesive and paper are laminated, fibers arranged in a lattice form in order to facilitate cutting, that is, hand cutting, are arranged in the width direction more than in the longitudinal direction, or Alternatively, there is also a problem that the cost becomes expensive because it is necessary to take measures such as forming intermittent holes in the longitudinal direction at predetermined intervals over the width of the film-shaped substrate. Furthermore, since the pressure-sensitive adhesive is laminated on the entire surface, it is difficult to remove the pressure-sensitive adhesive from the finger during use, and there is a problem that it takes time to remove hair.

As a means for solving the above problems, it is considered that the polyethylene film is highly stretched in the width direction so as to have the hand-cutting property. The strength of the waist in the longitudinal direction decreases, and the hair loss rate decreases. On the contrary, the waist in the width direction becomes stronger, but if it is too strong, the adhesion to uneven surfaces such as around the head of the fibula is lowered, and the hair loss rate is lowered. Therefore, there is a problem of antinomy between the hand-cutting property and the hair loss rate due to the constraint on the flexibility of the film-shaped substrate, and finding an effective range thereof is a problem.

The present invention has been made through intensive studies in view of the above circumstances. It can be manufactured at low cost, is easy to handle, and can be easily cut to a size corresponding to a site required for hair removal to remove hair. It is an object of the present invention to provide a hand-peeling epilation tape roll that can be efficiently performed.

[0008]

In order to achieve the above-mentioned object, a hand-peeling depilatory tape roll of the present invention is a roll of depilatory tape having a polyester film substrate coated with a depilatory pressure-sensitive adhesive. It is a depilatory tape wound up on a substrate, wherein the polyester film substrate is a width-direction high-stretch film and has a 45 ° cantilever bending resistance of 5.3 cm or more in the longitudinal direction and 14.7 cm or less in the width direction. (Claim 1).

In the present invention, it is preferable to provide a non-adhesive portion on at least one side edge along the longitudinal direction on one side of the polyester film base material (claim 2).

According to the hand-tearable depilatory tape roll of the present invention constructed as described above, the polyester film base material is formed of the width direction high stretch film, and the 45 ° cantilever bending resistance is set in the longitudinal direction 5. 3 cm or more, width direction 14.
By making it 7 cm or less, the width direction of the polyester film base material can be easily cut by hand, and
It is possible to improve the adhesion to a site requiring hair removal, and to give the base material a firmness for maintaining hair removal (claim 1). Further, by providing the non-adhesive portion on at least one side edge along the longitudinal direction on the one surface side of the polyester film substrate, the non-adhesive portion can be pinched and pulled out from the roll body (claim 2).

[0011]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a perspective view of the epilating tape roll of the present invention, and FIG. 2 is an enlarged cross-sectional view showing a main part of the epilating tape roll.

In the depilatory tape roll of the present invention, the depilatory pressure-sensitive adhesive 2 (hereinafter referred to as the pressure-sensitive adhesive) is applied to one side of the polyester film substrate 1 (hereinafter referred to as the film substrate) and is peeled to the other side. The depilatory tape 4 coated with the agent 3 is wound around the paper tube 5 in a roll shape.

In this case, the pressure-sensitive adhesive 2 is applied in the longitudinal direction of the film base material 1 leaving both side edge portions of the layer, and the non-adhesive portion 6 is formed on both side edges of the film base material 1. .
In this case, the non-adhesive portion 6 may be provided on at least one side edge. As described above, by providing the non-adhesive portion 6 on at least one side edge of the film substrate 1, the non-adhesive portion 6 does not adhere in a roll state, and thus the non-adhesive portion 6 of the roll-shaped epilation tape 4 is provided. Can be easily pulled out from the roll body by picking it with your finger.

The film substrate 1 must satisfy the strength of the waist and the hand tearability in the width direction for maintaining the adhesion to the skin surface of the body requiring hair removal and the hair removal property. Therefore, the film base material 1 is applied in the width direction based on an experiment described later.
It is made of double-stretched polyethylene film.
° The cantilever bending resistance (JIS L 1096) is set to be not less than 5.3 cm in the longitudinal direction and not more than 14.7 cm in the width direction. In this case, the film substrate 1 has a thickness of 38 to 7
Since it is a polyethylene film of 5 μm, it is transparent or translucent.

The pressure-sensitive adhesive 2 may be of any component as long as it is a hair-removing pressure-sensitive adhesive. For example, the hair-removing pressure-sensitive adhesive previously developed by the applicant (see JP-A-60-202810). Can be used. For example, the pressure-sensitive adhesive 2 having the components shown below can be used.

Styrene-isoprene-styrene block copolymer with a styrene content of 10 to 30% by weight {molecular weight 170,000, styrene / isoprene ratio = 14/85}: 100 parts by weight C5 petroleum resin {trade name: Wing Tack 95 US Goodyear Chemical Co., Ltd., softening point 95 ° C.}: 150 parts by weight ・ Low softening point resin {trade name: YS Resin PX200 Yasuhara Yushi Co., Ltd., softening point 20 ° C.}: 100 parts by weight Wax {bleached beeswax, melting point 63 ° C.}: 5 parts by weight Aromatic liquid {Structure phenyl-xylylethane, molecular weight 320, aniline point 21 ° C.}: 30 parts by weight Aliphatic liquid {naphthene-based process oil ( Product name: Shelf Rex 371-N), molecular weight 410, aniline point 101 ° C.}: 10 parts by weight bisphenol-based antioxidant {melting point 16 C., structure 2,2′-butylene bis (6-t-butyl-4-methylphenol)}: 3 parts by weight This adhesive 2 is transparent and is applied to the film substrate 1 at a thickness of 150 to 250 μm. Therefore, it is possible to obtain a hair removal tape that is almost transparent or translucent as a whole.

To remove hair 9 that grows near the peroneal head 8 of the foot 7 as shown in FIG. 3 by using the hair removal tape roll of the present invention constructed as described above, the hair removal tape 4 in a rolled state is used. The non-adhesive portion 6 is picked up with a finger to draw out a predetermined length, and a predetermined position is picked up with a finger to cut in the width direction. And
For example, if the hair is adhered around the head of the fibula and then peeled in the direction opposite to the direction of the hair 9, the adhesive force of the adhesive and the pulling force in the vertical direction by the waist of the film-shaped substrate 1 are combined to remove hair. Can be done (see FIG. 4). In this case, since the epilation tape 4 is entirely transparent or translucent, the adhesive 2 of the epilation tape 4 can be accurately attached to a site requiring epilation, and waste hair can be satisfactorily removed. it can.

[0018]

EXAMPLES Next, the physical properties of the depilatory tape roll of the present invention will be described. In order to investigate the physical properties of the epilating tape roll of the present invention, an experiment was conducted under the following conditions.

Conditions (1) Preparation of film-shaped substrate Polyester pellets having an intrinsic viscosity of 0.63 were placed in an extruder, extruded at 280 ° C, and precooled in an atmosphere of 60 ° C to prepare sheets having various thicknesses. . While heating this sheet to 85 ° C. using a staten type horizontal stretching machine, the width (C
It was stretched 4 times in the D) direction. Then, after loosening a little in the width direction, it was treated at 150 ° C. for about 6 seconds to obtain a hand-cuttable polyester film. From various thickness samples, thicknesses of 25 and 3
8, 50, 75 and 100 μm (all of which have an error rate of 5% or less) were selected as hair removal tape samples. Then, a peeling agent {trade name: Toray Silicone SH490, manufactured by Toray Industries, Inc.} was used to perform a peeling treatment on one surface of each film.

(2) Preparation of depilatory tape roll After sticking the untreated surface of the polyester sheet to the adhesive surface coated with the above-mentioned pressure sensitive adhesive on the release paper, the release paper is peeled off, and the polyester adhesive sheet is used as a paper. The sample was wrapped around a tube.

(3) Measuring method-Cantilever test: According to JIS L 1096. 4
The short side of the sample is aligned with the scale base line on a horizontal table with a smooth 5 ° slope, and the sample is gently slid in the direction of the slope by an appropriate method so that the center point of one end of the sample is the slope. When touching, read the position of the other end by scale. The bending resistance is indicated by the length of movement of the sample, and the front and back of each of the five samples are measured, and the bending resistance is represented by the average value in the longitudinal direction (longitudinal direction) and the lateral direction (width direction). In this experiment, five samples were sampled in each of the width (CD) direction and the longitudinal (MD) direction, and measurement was performed on all five front and back surfaces, and the average value of 10 points in total was measured in the CD direction and MD.
The bending resistance was measured in each direction.

Hair loss index: 2 cm × 2 cm in the outer central part of the lower arm of 5 females aged 20 to 30
Marking with a square figure plate, sticking a depilatory tape on it, peeled off at a stroke in the direction of about 150 ° after 5 minutes, calculated the depilation rate by the following formula, and rounded down the average of 5 persons to the decimal point to calculate the depilation index. . {(Hair loss rate in frame) / (number of hair loss in frame) + (number of remaining hair in frame)} × 10.

Adhesion around the fibula head: The adhesion of the entire surface of the adhesive to the skin when it was applied around the fibula head was qualitatively judged.

Under the above-mentioned conditions, experiments were carried out on the hand-cutting property of the epilating tape in the CD direction, the epilation index and the adhesion around the peroneal head, and the results shown in Table 1 were obtained.

[0025]

[Table 1]

As a result of the above experiment, when the 45 ° cantilever bending resistance is 5.3 cm or more in the longitudinal direction and 14.7 cm or less in the width direction, the hand-cutability in the width direction, the hair loss rate and the adhesion around the fibula head are good. It turned out that such a result was obtained.

[0027]

As described above, according to the hand-tearable epilation tape roll of the present invention, which is configured as described above, the following effects can be obtained.

1) According to the hand-tearable depilatory tape roll of claim 1, the polyester film substrate is formed of a widthwise highly stretched film and has a 45 ° cantilever bending resistance of 5.3 cm or more in the longitudinal direction, By setting the width direction to be 14.7 cm or less, the width direction of the polyester film base material can be easily cut by hand, and the adhesion to a site requiring hair removal can be improved, and the base Waist strength can be imparted to the material to maintain hair loss. Therefore, it is possible to manufacture at low cost, and it is possible to easily obtain an epilation tape having a size corresponding to a site requiring epilation, and it is possible to perform epilation efficiently.

2) According to the depilatory tape roll of claim 2, since the non-adhesive part is provided on at least one side edge along the longitudinal direction on the one surface side of the polyester film base material, in addition to the above 1) It is possible to provide a depilatory tape that can be easily handled by picking up the adhesive part and pulling it out from the roll body.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a hand-peeling epilation tape roll of the present invention.

FIG. 2 is an enlarged cross-sectional view of a main part of the hand-peeling epilation tape roll of the present invention.

FIG. 3 is a side view showing a usage state of the hand-peeling epilation tape roll of the present invention.

FIG. 4 is a perspective view showing a hair removal state.

[Explanation of symbols]

 1 Film base material (base material made of polyester film) 2 Adhesive (adhesive for hair removal) 4 Hair removal tape 6 Non-adhesive part

Claims (2)

[Claims] 1. A depilatory tape obtained by winding a depilatory tape having a depilatory pressure-sensitive adhesive applied to one surface side of a polyester film substrate in a roll shape, wherein the polyester film substrate is a width direction high stretch film. Yes, 45 ° cantilever stiffness is 5.3 in the longitudinal direction
A hand-peeling depilatory tape roll characterized by having a width of not less than cm and not more than 14.7 cm in the width direction. 2. The hand-peeling depilatory tape roll according to claim 1, wherein a non-adhesive portion is provided on at least one side edge along the longitudinal direction on one surface side of the polyester film base material. Cutting hair removal tape roll.