JP4806786B2 - Simulated skin and method for producing the same - Google Patents

Description

  The present invention relates to simulated skin used when a panel test or the like is actually performed by applying cosmetics when manufacturing or selling cosmetics such as foundations, and a method for manufacturing the simulated skin.

  Conventionally, for example, a method disclosed in Patent Document 1 is known as a method of manufacturing a pseudo skin used for such a panel test. That is, in this conventional method, a master model made of silicone resin is created based on collection of human skin patterns. And in the state which set this master model in the formwork, the skin-like unevenness | corrugation is shape | molded in the surface layer of artificial skin by apply | coating or spraying urethane resin on a master model.

In addition, the method disclosed in Patent Document 2 discloses a method for producing an artificial horny layer by laminating a film-forming component mainly composed of urethane on a silicone mold replicated from the skin surface. Yes. Furthermore, in this patent document 2, the method of engraving unevenness on a silicone thin film with an edging machine tool to make a silicone mold is disclosed.
Japanese Patent Laid-Open No. 11-9339 JP-A-11-169453

  In the master model and replica silicone mold in the manufacturing method described in Patent Document 1 and Patent Document 2 described above, since human skin is copied, not only labor is required, but individual differences are copied as they are, It is difficult to obtain general-purpose master models and replica silicone molds. Therefore, in order to obtain artificial skin corresponding to age group, gender, individual differences, etc., it is necessary to perform a lot of laborious skin shape collection on a large number of different individuals, which causes a rise in manufacturing cost It became.

  Moreover, it is extremely difficult to faithfully copy human skin patterns to the depth of fine wrinkles, etc., but even if it can be faithfully copied, it is even more difficult to accurately reproduce the master model or replica silicone mold. .

  In addition, the master model and replica silicone type small protrusions are easily missing, and dust or a part of the master model is easily clogged in the small gaps. For this reason, the surface of several artificial skins and artificial stratum corneum During the molding of the layer, the detailed shape on the master model or replica silicone mold collapses and its mold function is greatly reduced. Accordingly, the reproducibility decreases as the artificial skin and the like are manufactured repeatedly, and the number of artificial skins and artificial horny layers that can be manufactured from one master model or replica silicone mold is limited. Therefore, the master model and the replica silicone mold must be frequently replaced with new ones, and the manufacturing cost cannot be reduced as in the case described above.

  To deal with this, it is conceivable to use a metal type instead of the master model or replica type, but the metal type itself is quite expensive, and this metal type reproduces wrinkles with narrow skin. It was inevitable that the shape of the protrusion to be rounded from the beginning, and the reproducibility was difficult.

  In addition, when using a master model or replica model, a thin layer of urethane or the like is layered on top of it, it takes time to cure the thin layer, or it is carefully peeled away so as not to break the urethane after curing. As such, it took time to manufacture and was inferior in productivity.

  In addition, as described in Patent Document 2, when manufacturing an artificial stratum corneum using an edging machine tool, it is possible to scrape human skin wrinkles with any kind of blade tool. It is almost impossible, and only an artificial stratum corneum far from the shape of human skin can be realized.

  The present invention has been made paying attention to such problems existing in the prior art. An object of the present invention is to provide a simulated skin that can reproduce a surface state close to a human skin pattern and can reduce the manufacturing cost, and a manufacturing method that can easily manufacture the simulated skin.

In order to achieve the above object, the invention according to claim 1 is directed to the creation of a model pattern by simplifying a figure based on a human skin pattern, and using the model pattern as a surface pattern, A plurality of grooves are processed by laser processing on the surface of the resin sheet material, and polygonal upper skin-like hills are formed between the grooves.

The invention described in claim 2 is characterized in that, in the invention described in claim 1, the depth of the groove is changed.
The invention according to claim 3 is characterized in that, in the invention according to claim 1 or claim 2, a plurality of minute streak-like streaks are formed in the skin-like hill.

  The invention according to claim 4 is characterized in that, in the invention according to any one of claims 1 to 3, a pore-like hole is formed at or near the intersection of the skin-like grooves. To do.

The invention according to claim 5 is the invention according to claim 4, wherein the pore-like hole is formed as a through hole.
In invention of Claim 6, in the invention as described in any one of Claims 1-5, the said groove-like groove | channel was formed so that the said skin-like hill may make triangular shape. It is a feature.

The invention according to claim 7 is the invention according to any one of claims 1 to 6, wherein the synthetic resin sheet material is made of a silicone resin.
The invention according to claim 8 is a manufacturing method for manufacturing the artificial skin according to any one of claims 1 to 7, which is a human skin pattern. A process of creating a model pattern by simplifying a figure based on the shape, and using the model pattern as a surface pattern, a plurality of groove-like grooves are processed by laser processing on the surface of the synthetic resin sheet material, and forming a skin bump-like hill polygonal between channel-like grooves, machining the Kawamizo like groove by which to support the synthetic resin sheet material to the outer peripheral surface of the roller is irradiated with Les laser light It is characterized by doing.

(Function)
In the invention of the artificial skin according to claim 1, a plurality of skin groove-like grooves are processed on the surface of the synthetic resin sheet material by laser processing based on a human skin pattern, and a polygonal shape is formed between the skin groove-like grooves. A hill-like hill is formed. For this reason, the surface condition of the artificial skin is changed to the depth and depth of a plurality of skin grooves in human skin, and the shape and size of a polygonal shape such as a triangle or rhombus formed between these skin grooves. , It can be reproduced almost faithfully in a simulated manner.

  In the invention according to claim 2, since the change corresponding to the skin groove in the human skin is given to the depth of the skin groove-like groove on the synthetic resin sheet material, It can be reproduced closer to the skin pattern.

  In the invention according to claim 3, since a plurality of minute streak-like streaks corresponding to fine vertical streaks on the cuticle in human skin are formed in the dune-like hills between the respective skin-like grooves, The surface condition of the artificial skin can be reproduced closer to the human skin pattern.

  In the invention according to claim 4, since the pore-like hole corresponding to the pore near the intersection of the skin groove in the human skin is formed at or near the intersection of the skin-like groove, the surface condition of the pseudo skin Can be reproduced closer to the human skin pattern.

In the invention according to claim 5, it can be used as a model closer to human skin, for example, a sebum component oozes out from the back surface side to the front surface side of the pore-like hole penetrated.
In the invention described in claim 6, since the skin-like hill has a triangular shape, it is possible to manufacture a simulated skin that faithfully reproduces the human skin condition.

In the invention described in claim 7, since the silicone resin is used as the synthetic resin sheet material, it is possible to reproduce a texture closer to human skin as simulated skin.
In the invention according to claim 8, since the synthetic resin sheet material is irradiated on the synthetic resin sheet material in a state where the synthetic resin sheet material is supported on the outer peripheral surface of the roller, the skin groove is formed based on the human skin pattern. The groove can be processed efficiently.

  As described above, according to the present invention, pseudo skin capable of reproducing a surface state close to a human skin pattern can be easily manufactured at low cost.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 to 3, in the simulated skin 11 of this embodiment, a surface pattern that schematically represents a human skin pattern is formed on the surface of the synthetic resin sheet material 12. In this surface pattern, a plurality of skin-like grooves 13 are processed by laser processing, and triangular skin-like hills 14 are formed between the skin-like grooves 13. 1 and 2, the arrangement pitch of the groove-like grooves 13 of the surface pattern is drawn larger than the area of the sheet material 12, but the groove-like grooves 13 are actually much denser. appear. The synthetic resin sheet material 12 has a hardness of 20 to 70 (JIS A), a tensile strength of 0.4 to 8.2 MPa, an elongation of 130 to 740%, a tear strength of 20 to 210 N / cm, and a texture; surface roughness Rz = 10 A room temperature curing type silicone resin of ˜15 μm (JIS B 0601-1982) is used. In addition, by using the synthetic resin sheet material 12 with a texture on the surface, not only the skin becomes more pseudo, but also static electricity can be prevented and adhesion of dust, dust and the like can be reduced.

  By the way, the surface of human skin is as follows. That is, when a human skin pattern is first photographed and enlarged and simplified by image processing, a figure as shown in FIG. 5A is created. As is clear from this figure, the surface of the human skin has a plurality of skin grooves 21 that are so-called wrinkles, a skin mound 22 that is a convex portion surrounded by the skin grooves 21, and the intersections of the skin grooves 21. It is provided with a pore 23 in which the hair formed in the vicinity extends. And most of the skin mounds 22 are triangular and have a rhombus shape. The triangle or rhombus has an average length of one side of about 0.1 to 0.7 mm and a depth of the surrounding skin groove 21 of about 10 to 200 μm. Further, as shown in a part of FIG. 5A, a plurality of bowl-shaped minute streaks 24 are formed on the surface of each skin mound 22 so as to appear irregularly. In addition, human skin undergoes changes in size such as aging or drying of the skin with age, and the size of the skin 22 increases or deforms, and the depth of the skin groove 21 also increases. It tends to be shallow. In other words, the wrinkles are deeply and deeply carved by aging, but may become shallower by drying or the like.

Therefore, the surface pattern of the artificial skin 11 is created by the following method.
That is, in creating the surface pattern of the artificial skin 11, the figure as shown in FIG. 5B is obtained by simplifying the pattern based on the human skin pattern as shown in FIG. Data is created. Further, by modeling the figure of FIG. 5B, model pattern data as shown in FIG. 5C is created. The model pattern data in FIG. 5C has a configuration in which a plurality of equilateral triangles formed by a plurality of lines extending in parallel in three directions are arranged.

  And in the artificial skin 11 of this embodiment, using the model pattern as described above as a surface pattern, a plurality of (many) skin groove-like shapes corresponding to human skin skin grooves 21 on the surface of the synthetic resin sheet material 12 are used. The grooves 13 are processed to form a plurality of (many) triangular hill-like hills 14 corresponding to the human skin hills 22. In this case, as shown in FIG. 2 and FIG. 3A, the length L1 of one side of the triangle that forms the skin-like hill 14 is in the range of 0.05 to 2.50 mm, depending on the age of the person. The depth L2 of the skin groove-like groove 13 around the skin-like hill 14 is set within a range of 10 to 200 μm. Here, when the length L1 is short, a clear cuticle is not formed, and conversely, when the length L1 is long, the impression as pseudo skin is lowered.

  Moreover, as shown in FIGS. 1-3, in the artificial skin 11 of this embodiment, the skin groove-like groove | channel on the synthetic resin sheet material 12 respond | corresponds to the change of the depth of the skin groove 21 in human skin. A change is given to the depth L2 of 13. Further, a plurality of groove-like fine streaks 15 corresponding to the fine streaks 24 on the cuticle 22 in the human skin are formed on the hide-like hills 14 between the respective groove-like grooves 13. In addition, a plurality of pore-like holes 16 corresponding to the pores 23 in the vicinity of the intersection of the skin grooves 21 in the human skin are formed at or near the intersection of each skin groove-like groove 13.

Next, an apparatus for manufacturing the artificial skin 11 having the above configuration will be described.
As shown in FIG. 4, in this manufacturing apparatus, a cylindrical support roller 17 is disposed so as to be rotatable in one direction. The synthetic resin sheet material 12 is detachably wrapped and supported on the outer peripheral surface of the support roller 17 via an adhesive fixing sheet 18 having an adhesive. In the vicinity of the support roller 17, a laser head 19 of a laser processing machine for irradiating the surface of the synthetic resin sheet material 12 with laser light is disposed so as to be movable in the axial direction of the support roller 17. As the laser processing machine, various laser processing machines such as a carbon dioxide laser and an infrared laser can be used. Further, the laser beam may be either a continuous wave or a pulse wave.

  Then, with the synthetic resin sheet material 12 supported on the outer peripheral surface of the support roller 17, the support roller 17 is rotated in the forward direction or the reverse direction, and the laser head 19 is moved in the axial direction of the support roller 17. However, the laser beam is irradiated from the laser head 19 to the surface of the synthetic resin sheet material 12. Thereby, as shown in FIGS. 1 to 3, a plurality of skin-like grooves 13 are laser-processed on the surface of the synthetic resin sheet material 12, and a triangular skin-like hill 14 is formed between the skin-like grooves 13. Is formed. In the vicinity of the laser head 19, a suction device for sucking smoke and dust generated by laser processing is provided.

  In the case of the laser processing, a model pattern as shown in FIG. 5C is used as the surface pattern. Then, by inputting the surface pattern as predetermined data to a control device (not shown), the rotation of the support roller 17, the movement of the laser head 19, the irradiation output of laser light from the laser head 19, and the like are controlled. As a result, a plurality of skin-like grooves 13 having a required depth L2 based on the surface pattern are laser-processed on the surface of the synthetic resin sheet material 12, and one side of each skin-like groove 13 has a predetermined length L1. A triangular skin-like hill 14 is formed.

  Further, at the time of laser processing of the synthetic resin sheet material 12, the laser beam irradiation output from the laser head 19 is changed, so that a shallow depth change is imparted to the depth L2 of the skin groove-like groove 13 in the groove extending direction. The Furthermore, a plurality of pore-like holes 16 are formed by locally increasing the irradiation output of the laser light from the laser head 19 at or near the intersection of each skin groove-like groove 13. In addition, the presence or absence of the fine streak-like streaks 15 can be formed at any time by inputting predetermined data to the control unit of the laser processing apparatus. Each process such as the formation of the pore-like holes 16 and the formation of the fine streak-like streaks 15 may be performed once by operating the manufacturing apparatus once, or the manufacturing apparatus is operated for each process. Also good.

  As described above, in the simulated skin 11 of this embodiment, a plurality of skin groove-like grooves 13 in which the human skin pattern is changed are processed on the surface of the synthetic resin sheet material 12 by laser processing. A triangular skin-like hill 14 is formed between the like grooves 13. For this reason, the surface state of the artificial skin 11 is reproduced in a pseudo manner up to the depth of the skin groove 21 in the human skin and the shape and size of the triangular dermis 22 formed between the skin grooves 21. Can be formed. Therefore, when a cosmetic such as a foundation is applied to the artificial skin 11 and a panel test or the like is performed, the cosmetic can be uniformly applied to the surface of the artificial skin 11 like human skin.

  Further, as the surface pattern of the pseudo skin 11, a model pattern created by simplifying, patterning and modeling a human skin pattern is used. Therefore, only by changing the data of the model pattern, the length L1 of one side of the triangular shape forming the dune hill 14 and the depth L2 of the flute-like groove 13 around the dune hill 14 are It can be set arbitrarily according to the age and sex of a specific person. Therefore, the troublesomeness of collecting skin shapes from a large number of individuals can be avoided. In addition, a special skin shape or an ideal skin shape can be easily and repeatedly reproduced.

  Further, in the pseudo skin 11, a change corresponding to the skin groove 21 in human skin is given to the depth of the skin groove-like groove 13 on the synthetic resin sheet material 12. Moreover, a plurality of fine streak-like streaks 15 corresponding to the fine streaks 24 on the cuticle 22 in human skin are formed on the hide-like hills 14 between the respective skin-like grooves 13, and the skin-like grooves are formed. At or near 13 intersections, pore-like holes 16 corresponding to the pores 23 in the vicinity of the intersections of the skin grooves 21 in human skin are formed. Therefore, the surface state of the artificial skin 11 can be reproduced more closely with the human skin pattern. Then, the change in the depth of the skin groove-like groove 13 and the presence or absence of the pore-like hole 16 can be obtained simply by changing the irradiation output of the laser beam, which is very simple. Moreover, as shown in FIG.3 (b), the pore-like hole 16 can also be penetrated by a laser output change. Furthermore, it can be used as a model closer to human skin, for example, by allowing a sebum component to ooze out from the back surface side (the lower side in FIG. 3B) of the pore-like hole 16 penetrated.

  In the method of manufacturing the artificial skin 11 according to this embodiment, the synthetic resin sheet material 12 is supported on the outer peripheral surface of the support roller 17 and the synthetic resin sheet material 12 is simply irradiated with laser light. The groove 13 is processed. For this reason, the artificial skin 11 having a required surface state can be manufactured easily and in a short time.

The effects in this embodiment are listed as follows.
-When human skin can be reproduced in a pseudo manner and a cosmetic panel test or the like is performed, the same action or phenomenon as human skin can be obtained, and the panel test or the like can be effectively performed.

  -Since a simplified model pattern is used as the surface pattern, it is possible to easily manufacture artificial skin corresponding to the age and sex of a human by simply changing the model pattern data.

  ・ Since the artificial skin is manufactured by laser processing, the artificial skin that embodies the model pattern can be manufactured easily and quickly. Can be manufactured efficiently.

  Since the artificial skin is manufactured by laser processing, it is possible to give a shape close to that of human skin in the formation of the depth of the groove-like groove 13 or the pore-like hole 16 only by changing the laser output. Therefore, it is possible to add a function as a pseudo skin closer to human skin.

  The fine streak-like streaks 15 can be formed only by supporting the synthetic resin sheet material 12 on the support roller 17 during laser processing, and the formation of the fine streaks-like streaks 15 is extremely simple.

  Comparative examples having simulated skins of Examples 1 and 2 as shown in FIGS. 6 (a) and 6 (b) and having these simulated skins and surface patterns as shown in FIGS. 7 (a) to (c). When a comparative test was performed with 1 to 3 synthetic leathers and human skin as a reference example (not shown), the following results were obtained. Note that the surface patterns in FIGS. 6 and 7 are schematics of photographs taken with a 50 × magnification microscope.

  That is, the artificial skin 11 of Example 1 and Example 2 is a room temperature curable silicone resin (registered trademark “Masa Sheet” manufactured by Inoac Corporation), having a hardness of 20 (JIS A), a tensile strength of 3.4 MPa, Elongation 740%, tear strength 90 N / cm, with wrinkles; surface roughness Rz = 15 μm (JIS B 0601-1982) was used. And as the pseudo skin 11 of Example 1, as shown to Fig.6 (a), the hill-like hill 14 is an equilateral triangular lattice shape, the length L1 of the one side of the triangle is 0.14 mm, and the hill The depth L2 of the skin groove-like groove 13 around the hill 14 was 40 μm, and there was no minute streak 15 on the hill 14. Moreover, as Example 2, as shown in FIG.6 (b), the hill-like hill 14 is an equilateral triangle lattice shape, the length L1 of the triangle side is 0.14 mm, and the hill-like hill 14 of FIG. The depth L2 of the surrounding skin groove-like groove 13 was 40 μm, and 5 to 20 fine streak-like streaks 15 were formed on the skin hill 14.

  On the other hand, as Comparative Examples 1-3, it is a synthetic leather, and as shown in FIGS. 7 (a)-(c), those with protrusions 40 formed in the form of dots, an irregular wrinkle pattern What was formed in the shape of the projections and depressions 41, and which had a larger dot than the case of FIG. As the human skin of the reference example, the skin surface of the left back of a woman in her 30s was used.

  A powder foundation as a powder cosmetic was applied to the artificial skin of Examples 1 and 2, the synthetic leather of Comparative Examples 1 to 3 and the human skin of Reference Example, and the application states were compared by appearance observation. . As a result, on the surface of the human skin of the reference example, it was found that the foundation particles were uniformly introduced along the skin crevice after the foundation was applied, and the foundation was well applied. The state in which the foundation is satisfactorily applied means that the foundation particles fill the skin groove and smooth the skin surface, and are uniformly distributed and attached to the surface of the skin.

  On the other hand, in the simulated skin of Example 1, after applying the foundation, the foundation particles are uniformly present in the plurality of groove-like grooves 13 corresponding to the skin grooves of the human skin, and the foundation is applied to the human skin. It turned out to be close to the condition. In addition, in the simulated skin of Example 2, the foundation particles are uniformly present in the skin groove-like groove 13 after the foundation is applied, and are also uniformly distributed in the fine streak-like stripes 15 on the surface of the skin hill 14. And remained very similar to the state of application to human skin.

On the other hand, in the artificial leathers of Comparative Examples 1 to 3, all of the foundation particles have entered into the grooves of the surface pattern, but the entering state is not uniform and rough, and the artificial leather has almost no surface. It did not remain and was found to be far from being applied to human skin.
(Example of change)
In addition, this embodiment can also be changed and embodied as follows.

・ Apply a fine streak-like streak 15 on the leather hill 14 by laser processing.
As shown in FIG. 8, the groove-like groove 13 is formed so that a rhombus-shaped hide-like hill 14 is mainly formed between the plurality of groove-like grooves 13. Alternatively, a polygonal skin-like hill 14 such as a pentagon or a hexagon is formed.

  -Reproduce the skin groove-like groove 13 without being modeled so that the skin groove of the human skin is faithfully reproduced. In this case, for example, human skin is photographed, and the skin groove data is extracted by image processing of the human skin, and the skin groove-like groove 13 is formed by laser processing according to the skin groove data.

The perspective view which shows the pseudo skin of one Embodiment. The enlarged plan view of the pseudo skin of FIG. (A) is the fragmentary expanded sectional view in the 3-3 line of FIG. 2, (b) is sectional drawing which shows the example which penetrated the pore-like hole. The perspective view which shows the manufacturing apparatus of pseudo skin. (A)-(c) is a figure which shows the preparation method of the surface pattern of a pseudo skin. (A), (b) is a top view which shows the artificial skin of Example 1 and 2 used for the comparative test. (A)-(c) is a top view which shows the synthetic leather of Comparative Examples 1-3 used for the comparative test. The top view which shows the example of a change of the artificial skin of embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 11 ... Pseudo skin, 12 ... Synthetic resin sheet material, 13 ... Groove, 14 ... Dust-like hill, 15 ... Fine streak-like streak, 16 ... Pore-like hole, L2 ... Depth of groove.

Claims (8)

Create a model pattern by simplifying the figure based on the human skin pattern, use the model pattern as a surface pattern, process a plurality of groove-like grooves by laser processing on the surface of the synthetic resin sheet material, A pseudo skin characterized by forming a polygonal skin-like hill between each skin-like groove. The simulated skin according to claim 1, wherein a change is given to the depth of the skin groove-like groove. The artificial skin according to claim 1 or 2, wherein a plurality of minute streak-like streaks are formed on the skin-like hill. The pseudo skin according to any one of claims 1 to 3, wherein pore-like holes are formed at or near the intersection of the skin-like grooves. The simulated skin according to claim 4, wherein the pore-like hole is formed as a through hole. The artificial skin according to any one of claims 1 to 5, wherein the skin groove-like groove is formed so that the skin-like hill has a triangular shape. The artificial skin according to any one of claims 1 to 6, wherein the synthetic resin sheet material is made of a silicone resin. A manufacturing method for manufacturing the artificial skin according to any one of claims 1 to 7,
Creating a model pattern by simplifying figures based on human skin patterns;
Using the model pattern as a surface pattern, a plurality of skin-like grooves are processed by laser processing on the surface of the synthetic resin sheet material to form polygonal skin-like hills between the skin-like grooves. A process,
Method for producing a pseudo skin characterized by processing the Kawamizo like groove by which to supported on the outer peripheral surface of the roller synthetic resin sheet material is irradiated with Les laser light.

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