Manufacturing method of base fabric to be impregnated with cosmetic

Abstract

To provide a base fabric that is suppressed from being elongated when a sheet impregnated with a cosmetic is taken out or spread out from a folded state, and capable of imparting good touch feeling.SOLUTION: A method for manufacturing a base fabric to be impregnated with a cosmetic includes the steps of: preparing a spunbonded nonwoven fabric roll which is wound, around a core thereof, with a spunbonded nonwoven fabric constituted of continuous fibers; preparing a parallel short fiber web, which is a short fiber web containing more than 50 mass% of cotton fibers and is made by a parallel carding machine; acquiring a laminate web by stacking the parallel short fiber web on one surface of the spunbonded nonwoven fabric so that a machine direction of the spunbonded nonwoven fabric and a machine direction of the parallel short fiber web match; and entangling the laminate web by injecting high-pressure water flow to the laminate web.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a base fabric for impregnating with a cosmetic material. [Background technology]

[0002] Nonwoven fabrics have traditionally been widely used as substrates for impregnating cosmetics in cosmetic sheet packs, cleansing sheets, antiperspirant sheets, etc. Examples of nonwoven fabrics that have been used include nonwoven fabrics made only of cotton fibers, nonwoven fabrics made only of rayon fibers, and laminated nonwoven fabrics in which cotton fiber layers are laminated on both surfaces of a spunbond nonwoven fabric (e.g., Patent Document 1).

[0003] According to Patent Document 1, by using a laminated nonwoven fabric as the sheet base material of a sheet pack, in which an elastic spunbond nonwoven fabric layer is used as the middle layer and short fiber layers such as cellulose fibers are laminated on both surfaces, it is possible to obtain a sheet pack that fits well to the skin and does not feel tight even when used for long periods of time. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2010-281003 Summary of the Invention [Problem to be solved by the invention]

[0005] The sheet pack made of the laminated nonwoven fabric of Patent Document 1 described above has a good fit to the skin, but has the drawback of being stretchy, resulting in stretching when the sheet impregnated with a cosmetic preparation is taken out or when the folded sheet is unfolded. An object of the present invention is to provide a base fabric for impregnation with a cosmetic preparation that is pleasant to the touch and that inhibits stretching when a sheet impregnated with a cosmetic preparation, such as a sheet pack, cleansing sheet, or antiperspirant sheet, is taken out or when the folded sheet is unfolded. [Means for solving the problem]

[0006] The present invention achieves the above object by providing a method for manufacturing a base fabric for impregnating a cosmetic, the method comprising: A step of preparing a spunbond nonwoven fabric roll in which a spunbond nonwoven fabric made of continuous fibers is wound around a core; A step of preparing a parallel staple fiber web containing more than 50% by mass of cotton fibers and produced by a parallel carding machine; a step of unwinding a spunbonded nonwoven fabric roll and superposing the parallel staple fiber web on one side of the spunbonded nonwoven fabric so that the machine direction of the spunbonded nonwoven fabric coincides with the machine direction of the parallel staple fiber web, thereby obtaining a laminated web; The gist of the present invention is a method for producing a cosmetic impregnated base fabric, which includes a step of spraying a high-pressure water stream onto a laminated web to entangle the laminated web.

[0007] The present invention relates to a method for producing a base fabric for impregnating a cosmetic, and the base fabric is composed of a laminated web in which the machine direction of the spunbond nonwoven fabric and the machine direction of the parallel staple fiber web are laminated together.

[0008] The spunbond nonwoven fabric used in the present invention is composed of continuous fibers such as polyolefin fibers, polyester fibers, and polyamide fibers. Polyolefin fibers are preferred because they have good flexibility and excellent softness. Core-sheath composite fibers consisting of a polypropylene core and a polyethylene sheath are also preferred from the perspective of flexibility. Core-sheath composite fibers consisting of a polyester core and a polyethylene sheath are also preferred because they have mechanical strength and flexibility. Among polyester fibers, polylactic acid fibers are preferred from the perspective of environmental consideration. The single fiber fineness of the continuous fibers is preferably 1 to 3 dtex, and more preferably 1 to 2 dtex. A fineness of 1 dtex or more is preferred because it provides practical strength and is less likely to break when entangled with staple fibers. A fineness of 3 dtex or less provides the continuous fibers with excellent softness and bends without resistance to bending, improving entanglement with staple fibers and improving the softness of the base fabric.

[0009] The basis weight of spunbond nonwoven fabric is 7 to 30 g / m 2 Good condition. Weight is 7g / m 2 By satisfying the above conditions, the strength of the base fabric for cosmetic preparation impregnation can be maintained, and a sheet pack or cleansing sheet that is less likely to deform when impregnated with a cosmetic preparation can be obtained. 2 By keeping the weight of the base fabric at 7 to 15 g / m or less, the mass of the base fabric does not become too large, and the sheet pack, antiperspirant sheet, cleansing sheet, etc., have both strength and flexibility. 2 It is more preferable that:

[0010] Spunbond nonwoven fabrics are produced by the spunbonding method, in which melt-spun fibers are collected on a moving conveyor net, and then the continuous fibers are bonded and integrated to form a spunbond nonwoven fabric, which is then wound around a core to form a spunbond nonwoven fabric roll. In the present invention, such a spunbond nonwoven fabric roll wound around a core is prepared.

[0011] Spunbonded nonwoven fabrics are preferably made by partially thermocompressing the continuous fibers together using a thermal embossing process. This partial thermocompression bonding provides flexibility, mechanical strength, and dimensional stability. Even when cosmetically impregnated sheet packs, cleansing sheets, or antiperspirant sheets are pulled out of their pouches or when folded sheet packs are unfolded, they are less likely to deform and maintain their dimensions, even with a small basis weight. Furthermore, spunbonded nonwoven fabrics are collected by collecting melt-spun fibers on a moving conveyor net, with the axial direction of the continuous fibers aligned approximately in the machine direction. Therefore, the resulting spunbonded nonwoven fabric has excellent strength in the machine direction and is supple and flexible, since the axial direction of the continuous fibers is aligned approximately in the machine direction.

[0012] A staple fiber web containing more than 50% by mass of cotton fibers is laminated on one side of the spunbond nonwoven fabric. Cotton fibers have excellent liquid absorption and retention properties, and because they are natural fibers, they are less irritating to the skin and are therefore well suited for applications involving contact with the skin. Therefore, in the present invention, the staple fiber web contains more than 50% by mass of such cotton fibers. Furthermore, the constituent fibers of the staple fiber web may be composed solely of cotton fibers, but the staple fiber web may also contain fibers other than cotton fibers in an amount of less than 50% by mass.

[0013] Other preferred fibers to be blended include rayon and solvent-spun cellulose fibers. These fibers have excellent liquid absorption and flexibility. Blending a small amount of synthetic ultrafine fibers with a single fiber fineness of less than 1 decitex is also preferred. Ultrafine fibers have excellent flexibility, feel good against the skin, and exhibit good inter-fiber entanglement. Splittable composite fibers are preferably used as the ultrafine fibers, which are split during the inter-entanglement process to produce ultrafine fibers. Splittable composite fibers preferably have a split shape in which two polymers are radially and alternately arranged in the cross section. Blending a small amount of synthetic core-sheath composite staple fibers, whose sheath is made of polyethylene, is also preferred. The core of the core-sheath composite staple fiber is preferably made of a thermoplastic resin with a higher melting point than the polyethylene of the sheath. Examples of such high-melting-point thermoplastic resins include polypropylene and polyester. The polyethylene sheath melts and softens when heated, imparting heat-sealing and thermoformability to the base fabric. Furthermore, because core-sheath composite staple fibers in which the sheath is made of polyethylene have excellent flexibility, they can be left unheated without being heated, rather than being melted and softened by heat treatment as described above to function as a thermal binder component, thereby contributing to improved flexibility of the base fabric. The fiber length of the staple fibers constituting the staple fiber web is preferably approximately 20 to 55 mm. When fibers other than cotton fibers are mixed, the single fiber fineness of the mixed staple fibers is preferably small, taking into account the feel on the skin, and is preferably 2.5 decitex or less, more preferably 2.0 decitex or less. The lower limit of the single fiber fineness may be approximately 0.1 decitex. Furthermore, a fiber fineness of 2.5 decitex or less is preferable because the fibers are easily bent and easily entangled with continuous fibers when intertwined and integrated with the spunbond nonwoven fabric, and is also preferable because it is gentle on the skin.

[0014] The basis weight of the short fiber web is 15 to 55 g / m 2The staple fiber web is made primarily of cotton fibers, and therefore has excellent liquid absorption properties, and is able to effectively absorb the cosmetic material impregnated into the base fabric, while also serving to effectively retain the absorbed cosmetic material. When the basis weight is within the above range, the web can effectively absorb and retain the liquid. 2 If the thickness is less than 55 g / m, the cosmetic material tends to be difficult to be sufficiently retained. 2 If the thickness exceeds this, the cosmetic will be absorbed in a large amount, and in the case of a sheet mask, for example, the user may feel that it is heavy when applying it to the face or the like.

[0015] The staple fiber web laminated on one side of the spunbond nonwoven fabric is a parallel staple fiber web produced by a parallel carding machine. Methods for producing staple fiber webs generally include parallel webs in which the fiber axial direction is aligned in the machine direction of the web, cross webs in which parallel webs are inverted and stacked so that the fiber direction is perpendicular to the machine direction, and the fiber axial direction is aligned perpendicular to the machine direction, and random webs in which fibers are transported by centrifugal force caused by an airflow, and the individual fibers are stacked in random directions rather than in a uniform fiber direction. Another example is an air-laid web in which, like a random web, the fibers are stacked in a random direction rather than in a uniform fiber direction. In the present invention, by employing a parallel web in which the fibers are oriented in the machine direction and have a uniform fiber direction among the above-mentioned webs, a base fabric for impregnating a cosmetic preparation with a pleasant feel on the skin can be obtained. In parallel webs, the orientation direction of the fibers is the machine direction, and so the strength ratio between the machine direction (MD) and the direction perpendicular to it (CD) is large, resulting in an unbalanced strength. Therefore, when a parallel web consisting only of such short fibers is used to perform a hydroentanglement process, or when the web is dried after the entanglement process, or when the base fabric is cut into a specific shape or punched into a specific shape for use as a sheet pack, the web will tend to stretch in the machine direction due to its low strength in the CD direction, resulting in problems with processability during the processing steps. However, in the present invention, such a parallel web is laminated and integrated with a spunbond nonwoven fabric, resulting in a base fabric that is excellent in dimensional stability, is less likely to stretch in the process, and is easy to handle.

[0016] The present invention provides a spunbond nonwoven fabric roll having the above-described spunbond nonwoven fabric made from continuous fibers wound around a core, and also provides a parallel staple fiber web containing more than 50% by mass of the above-described cotton fibers and produced by a parallel carding machine, unwinds the spunbond nonwoven fabric roll, and overlays the parallel staple fiber web on one side of the spunbond nonwoven fabric so that the machine direction of the spunbond nonwoven fabric and the machine direction of the parallel staple fiber web coincide with each other to obtain a laminated web, which is then subjected to a hydroentanglement treatment by spraying a high-pressure water stream onto the laminated web. Furthermore, the staple fibers constituting the staple fiber web are also oriented in the machine direction, and because both are oriented in the machine direction, the sprayed high-pressure water stream entangles the staple fiber webs while maintaining their orientation, and the staple fibers become entangled with the continuous fibers, resulting in an entangled and integrated laminated web. Because both the continuous and staple fibers are oriented in the machine direction and the constituent fibers are oriented in the same direction, a base fabric for cosmetic impregnation can be obtained that is flexible, pleasant to the touch, and has a good texture. Furthermore, the lamination of spunbonded nonwoven fabrics provides practical strength, resistance to width compression, excellent dimensional stability, and good processability. When impregnated with cosmetics to form sheet masks, cleansing sheets, antiperspirant sheets, and the like, these sheets are less likely to stretch or deform when removed from the bag. Furthermore, since the constituent fibers of the staple fiber web are entangled and integrated by a hydroentanglement treatment, when the staple fiber web is used to impregnate cosmetics as a sheet pack, cleansing sheet, antiperspirant sheet, or the like, the cotton fibers themselves absorb the cosmetics and the cosmetics can be well retained in the inter-fiber voids formed by the entanglement.

[0017] When a staple fiber web is laminated on a spunbonded nonwoven fabric, a two-layer structure is formed in which the above-mentioned parallel staple fiber web is laminated on one side of the spunbonded nonwoven fabric. Alternatively, a three-layer structure may be formed in which a staple fiber web is laminated on the other side of the spunbonded nonwoven fabric and staple fiber webs are laminated on both sides of the spunbonded nonwoven fabric. In the case of a three-layer structure, if the staple fiber web laminated on the other side is also a parallel staple fiber web, the flexibility will be good. Furthermore, if the staple fiber web laminated on the other side is not a parallel staple fiber web but a random web or cross web, it is also possible, from the standpoint of flexibility, to use one having a basis weight that is similar to, equal to, or smaller than the basis weight of the parallel web laminated on one side.

[0018] In the present invention, a parallel staple fiber web is overlaid on one side of a spunbond nonwoven fabric so that the machine direction of the spunbond nonwoven fabric coincides with the machine direction of the parallel staple fiber web to obtain a laminated web, and this laminated web is subjected to a hydroentanglement treatment by spraying a high-pressure water stream onto it. The high-pressure water stream in the hydroentanglement treatment is carried out, for example, by impinging a water stream with a pressure of 1 to 10 MPa onto the laminated web. First, preliminary entanglement is carried out with a high-pressure water stream of about 1 to 3 MPa, and then main entanglement is carried out with a water stream with a pressure of 4 to 10 MPa, thereby obtaining a product with good texture. Furthermore, if the water stream pressure exceeds 10 MPa, the entanglement between the spunbond nonwoven fabric and the staple fiber web becomes too strong, and , and tends to be slightly less flexible.

[0019] The laminate obtained by the hydroentanglement treatment contains water due to the high-pressure water jet treatment, and this water is removed by a dehydration and drying process to obtain a base fabric for cosmetic impregnation. The dehydration and drying process can be carried out by a conventionally known method, for example, by squeezing the liquid out of the laminate with a mangle or the like and then passing it through a dryer.

[0020] The cosmetic preparation-impregnated base fabric is formed by laminating a spunbonded nonwoven fabric and a staple fiber web, and the staple fibers are entangled with each other and with the spunbonded nonwoven fabric, thereby integrating the two. Note that some of the staple fibers entangled with the spunbonded nonwoven fabric may be present on the surface of the spunbonded nonwoven fabric.

[0021] The weight of the base fabric is 25 to 80 g / m 2 The range of 25g / m 2 By setting the thickness to 80 g / m or more, the sheet has an appropriate strength and can hold the cosmetic material well. 2 By satisfying the above condition, the mass of the sheet pack itself containing the cosmetic, the cleansing sheet itself, the antiperspirant sheet itself, etc. will not become too large, making it easy to handle.

[0022] In the present invention, it is also preferable that the base fabric for cosmetic preparations is colored in a color other than white. Generally, base fabrics for cosmetic preparations are white, which gives off a clean impression. However, coloring the base fabric in a color other than white can impart aesthetic appeal and other design features in addition to the clean impression. Furthermore, various images can be created depending on the coloring hue.

[0023] Examples of hues include blue, light blue, purple, green, scarlet, yellow, and pink. Blue and light blue provide a sense of cleanliness and freshness and tend to induce a sense of calm, while green, scarlet, and yellow tend to make users feel energized, and purple and pink tend to induce a sense of splendor. When the obtained base fabric is used to make a sheet pack, cleansing sheet, antiperspirant sheet, or the like, the container, such as a bag for storing the sheet pack, can also be colored in the same color as the base fabric, thereby providing a more stylish design and a sense of unity. It is also preferable to select the color imparted to the base fabric depending on the efficacy and image of the cosmetic to be impregnated into the base fabric.

[0024] As a method for coloring the cosmetic preparation-impregnated base fabric, the obtained base fabric may be dyed to the desired color. It is also preferable to use, as the spunbond nonwoven fabric constituting the cosmetic preparation-impregnated base fabric, a spunbond nonwoven fabric that has been colored by dyeing, or a spunbond nonwoven fabric in which the fibers constituting the nonwoven fabric contain a pigment of a color other than white. When a colored spunbond nonwoven fabric is used, in order to bring out the hue of the spunbond nonwoven fabric, it is preferable that all of the staple fibers constituting the staple fiber web are uncolored, or, if synthetic fibers are mixed, synthetic fibers containing a white pigment are used. It is also possible to use staple fibers dyed with a dye of a similar color to the spunbond nonwoven fabric, or to mix spunbond nonwoven fabric with spunbond nonwoven fabric or rayon fibers containing a pigment of a similar color to the spunbond nonwoven fabric, in order to bring out the hue of the spunbond nonwoven fabric.

[0025] The obtained cosmetic-impregnated base fabric can be formed into a desired shape, such as a shape that covers all or part of the face, or a shape that covers the neck or neck and chest, by, for example, punching or other processing, and then impregnated with a cosmetic such as a lotion, a beauty serum, or a milky lotion to form a sheet pack. The sheet pack impregnated with the cosmetic can be folded appropriately and stored in a bag or the like. The sheet pack obtained from the base fabric of the present invention has good dimensional stability, so it does not stretch easily when removed from the bag, has excellent liquid absorbency, and is less irritating to the skin.

[0026] The obtained base fabric for cosmetic preparation impregnation is cut to an appropriate size and impregnated with a cosmetic preparation such as a cleansing lotion or cleansing emulsion for removing makeup to produce a cleansing sheet. The cleansing sheet can be folded appropriately, and a plurality of folded cleansing sheets can be stored in a storage body. When storing a plurality of sheets, the cleansing sheets can be combined so that a portion of one cleansing sheet is sandwiched between the folded portions of other cleansing sheets to be stacked thereon, allowing them to be taken out one after the other. The cleansing sheets obtained from the base fabric of the present invention have good dimensional stability, and therefore do not stretch easily when taken out of a bag, allowing them to be taken out one after the other. It is easy to handle as it does not stretch easily and retains its shape easily, and it is also less irritating to the skin.

[0027] The obtained cosmetic-impregnated base fabric can be cut to an appropriate size and impregnated with a cosmetic, such as a lotion for antiperspirant sheets, to produce an antiperspirant sheet. The antiperspirant sheet can be folded appropriately, and multiple folded antiperspirant sheets can be stored in a storage container. When multiple sheets are stored, they can be combined so that a portion of one antiperspirant sheet is sandwiched between the folds of other antiperspirant sheets, allowing them to be removed sequentially. The antiperspirant sheet obtained from the base fabric of the present invention has good dimensional stability, so it does not stretch when removed from a bag, and even when in a form that allows sequential removal, it does not deform, maintains its original shape, and is less irritating to the skin. [Effects of the Invention]

[0028] According to the present invention, it is possible to provide a base fabric for being impregnated with a cosmetic preparation, which has a good texture, a pleasant feel to the touch, good dimensional stability, is resistant to deformation, and has excellent processability. [Example]

[0029] Example 1 [Preparation of spunbond nonwoven fabric] A spunbond nonwoven fabric (basis weight 15 g / m) obtained by the spunbonding method, which is made of dyed polypropylene continuous fibers containing a pigment formulated to produce a purple color, and which has been heat embossed. 2 A spunbond nonwoven fabric roll (product number SP-1020E-PLV, manufactured by Maeda Kosen Co., Ltd.) having continuous fibers (single fiber fineness of 2.2 dtex) wound around a core was prepared. [Preparation of parallel staple fiber web] Bleached cotton fibers with an average fiber length of 25 mm are opened and stacked using a parallel carding machine to produce a fabric with a basis weight of 23 g / m 2 A parallel staple fiber web consisting of only bleached cotton fibers was prepared. The bleached cotton fibers are almost white in color. [Cosmetic impregnated base fabric] The prepared spunbond nonwoven fabric roll was unwound, and the parallel staple fiber webs were stacked on top and bottom of the spunbond nonwoven fabric so that the machine direction of the spunbond nonwoven fabric and the machine direction of the parallel staple fiber web were aligned, resulting in a three-layer laminated web. The laminated web was placed on a support made of 90-mesh fabric and passed through a high-pressure water jetting device (a device with 0.12 mm diameter nozzles arranged in a horizontal row with a hole spacing of 0.6 mm). A high-pressure water jet was applied from one of the staple fiber web sides at a jet pressure of 2 MPa, and then at a jet pressure of 3 MPa. The laminated web was then inverted and sprayed twice with a high-pressure water jet from the other staple fiber web side at a jet pressure of 5 MPa. It was then further inverted and sprayed twice with a jet pressure of 5 MPa from one staple fiber web side to form an entangled and integrated laminate. The laminate was then heated at 135 ° C for 120 seconds to evaporate the moisture contained in the laminate, resulting in a base fabric.

[0030] Example 2 [Preparation of spunbond nonwoven fabric] A roll of the spunbond nonwoven fabric prepared in Example 1 was prepared. [Preparation of parallel staple fiber web] Bleached cotton fibers with an average fiber length of 25 mm and rayon staple fibers with a single fiber fineness of 1.7 decitex and a fiber length of 40 mm were mixed in a mass ratio of cotton fibers to rayon staple fibers = 70:30, and the mixture was opened and piled up in a parallel carding machine to produce a fabric with a basis weight of 23 g / m. 2 A parallel staple fiber web was prepared by mixing cotton fibers and rayon staple fibers. The bleached cotton fibers were almost white in color, and the rayon staple fibers were almost white and did not contain any pigment or dye. [Preparation of random staple fiber web] The cotton fibers and rayon fibers used in the preparation of the parallel staple fiber web were mixed in a mass ratio of cotton fibers:rayon fibers=70:30, and the mixture was opened and piled in a random carding machine to form a web with a basis weight of 23 g / m. 2 A random staple fiber web was prepared by mixing cotton fibers and rayon staple fibers. [Cosmetic impregnated base fabric] A spunbond nonwoven fabric roll was unwound and layered on the prepared random staple fiber web. The parallel staple fiber web was layered on top of the spunbond nonwoven fabric so that the machine direction of the spunbond nonwoven fabric coincided with that of the parallel staple fiber web. The resulting three-layer laminated web was placed on a 90-mesh woven fabric support and passed through a high-pressure water jetting device (a device consisting of 0.12 mm diameter nozzles arranged in a horizontal row with 0.6 mm spacing). A high-pressure water jet was applied from the parallel staple fiber web side at a jetting pressure of 2 MPa, followed by a high-pressure water jet at a jetting pressure of 3 MPa. The laminated web was then inverted and subjected to a high-pressure water jet once each from the random staple fiber web side at a jetting pressure of 5 MPa and once each from the parallel staple fiber web side. The laminated web was then inverted and subjected to a high-pressure water jet once each from the parallel staple fiber web side at a jetting pressure of 5 MPa and once each from the parallel staple fiber web side at a jetting pressure of 9 MPa, resulting in an entangled and integrated laminate. Thereafter, the laminate was heated at 135°C for 120 seconds to evaporate the water contained in the laminate, thereby obtaining a base fabric.

[0031] Comparative Example 1 [Preparation of parallel staple fiber web (1)] Bleached cotton fibers with an average fiber length of 25 mm were opened and stacked using a parallel carding machine to obtain a fiber weight of 30 g / m 2 A parallel staple fiber web consisting of cotton fibers was obtained. [Preparation of random staple fiber web (2)] Bleached cotton flocks with an average fiber length of 25 mm were opened and piled up using a random carding machine to obtain a fiber weight of 30 g / m 2 A random staple fiber web consisting of cotton fibers was obtained. [Cosmetic impregnated base fabric] The prepared staple fiber webs (1) and (2) were laminated, and the resulting two-layer laminate web was placed on a support made of 90-mesh woven fabric and passed through a high-pressure water jetting device (a device consisting of 0.12 mm diameter nozzles arranged in a horizontal row with a hole spacing of 0.6 mm). A high-pressure water jet was applied from the random staple fiber web (1) side at a jetting pressure of 2 MPa, followed by a high-pressure water jet at a jetting pressure of 6 MPa. The laminated web was then inverted and subjected to a high-pressure water jet twice from the random staple fiber web (2) side at a jetting pressure of 7 MPa. It was then further inverted and subjected to a jetting pressure of 8 MPa twice from the random staple fiber web (1) side to form an entangled and integrated laminate. The laminate was then heated at 135°C for 120 seconds to evaporate the moisture contained in the laminate, yielding a base fabric.

[0032] The obtained base fabrics of Examples 1 and 2 and Comparative Example 1 were measured for the following physical properties, and the results are shown in Table 1. (1) Weight (g / m 2 ): Ten test pieces (10 cm long x 10 cm wide) were prepared from the sample under standard conditions, and the mass of each test piece was weighed. The average value obtained was converted into the weight per unit area and used as the basis weight. (2) Tensile strength (N / 50mm width): According to the strip method described in JIS L-1913, a test piece 50mm wide x 300mm long was used to measure the stress at 5% elongation, the stress at 10% elongation, and the maximum tensile strength at a grip distance of 100mm and a tensile speed of 100mm / min. Five test pieces were prepared in the MD direction, CD direction, and at a 45° angle to the MD direction, and the average values were used as the stress and tensile strength. For the measurements, test specimens were prepared in either a standard state (dry state) or a wet state. For the wet test specimens, test specimens of a specified size were soaked in tap water in an amount 3.5 times their own weight, and the stress and tensile strength of these wet test specimens were measured.

[0033] [Table 1] As can be seen from Table 1, Examples 1 and 2 had higher stresses at 5% and 10% elongation in all directions, namely, MD, CD, and 45°, when wet, that is, impregnated with liquid, compared to Comparative Example 1. This shows that the base fabrics impregnated with a cosmetic preparation are resistant to deformation, easy to remove, and able to stably maintain their shape when pulled out and used from a package such as a bag.

Claims

1. A method for manufacturing a base fabric for impregnating a cosmetic, comprising: A step of preparing a spunbond nonwoven fabric roll in which a spunbond nonwoven fabric made of continuous fibers is wound around a core; A step of preparing a parallel staple fiber web containing more than 50% by mass of cotton fibers and produced by a parallel carding machine; a step of unwinding a spunbonded nonwoven fabric roll and superposing the parallel staple fiber web on one side of the spunbonded nonwoven fabric so that the machine direction of the spunbonded nonwoven fabric coincides with the machine direction of the parallel staple fiber web, thereby obtaining a laminated web; A method for producing a base fabric for cosmetic preparation impregnation, comprising a step of spraying a high-pressure water stream onto a laminated web to entangle the laminated web.

2. 2. The method for producing a base fabric for cosmetic preparation impregnation according to claim 1, wherein the spunbonded nonwoven fabric is a nonwoven fabric formed by partially bonding continuous fibers together under heat and pressure.

3. 2. The method for producing a base fabric to be impregnated with cosmetic materials according to claim 1, wherein the spunbond nonwoven fabric is made of dyed fibers containing a pigment other than white, and the base fabric to be impregnated with cosmetic materials is colored in a color other than white.

4. 4. The method for producing a base fabric to be impregnated with a cosmetic preparation according to claim 3, wherein the staple fibers constituting the staple fiber web are uncolored or contain a white pigment.

5. 4. The method for producing a base fabric for impregnation with a cosmetic material according to claim 1, wherein the base fabric for impregnation with a cosmetic material is a base fabric for a sheet pack, a cleansing base fabric for removing makeup, or a base fabric for an antiperspirant sheet.

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