JP4413500B2 - Scar repair sheet - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a scar repair sheet for repairing hypertrophic scars, keloids, and the like that are raised with scars such as burns or other trauma.
[0002]
TECHNICAL BACKGROUND OF THE INVENTION
When the skin is damaged, such as burns or other trauma, the damaged tissue is regenerated and the damaged part is repaired. During this repair, for example, in the case of a burn, the regenerated damaged part may become keloid-like, and in the case of a laceration, the regenerated damaged part may rise more than other parts (hypertrophic scar). is there. Once such keloid-like scars or hypertrophic scars are formed, they hardly disappear spontaneously as they are, and the psychological effects of such hypertrophic scars or keloids are very large.
[0003]
In order to eliminate such keloid-like scars or hypertrophic scars, it is known that the use of a silicone gel sheet is effective (Burns. Vol. 9, p201-204 (Non-patent Document 1), etc.) reference).
However, since such a silicone gel has high adhesiveness, the abutment surface of the repaired part adheres well to the skin, but the opposite surface, that is, the outer surface does not require adhesive force. In addition, the silicone gel sheet is difficult to use because it has an adhesive force on the outer surface. In addition, such a silicone gel sheet has good shape followability but has a low strength, and therefore has a problem of being broken in a relatively short time.
[0004]
In order to solve such a problem, a method using a laminate in which a nonwoven fabric or the like is adhered to the outer surface of a silicone gel sheet (see Japanese Patent Laid-Open No. 3-75055 (Patent Document 1)), a silicone elastomer layer is disposed on the outer surface. There is a method using a laminate (see JP-A-1-34370 (Patent Document 2)). However, when such a multilayer laminate is used, the excellent shape following property of the silicone gel sheet is reduced. Problems arise.
[0005]
Japanese Patent Laid-Open No. 11-319065 (Patent Document 3) discloses a silicone gel sheet that is integrally molded so that a silicone gel layer and a silicone elastomer layer have a continuous heterophase structure. Even in a sheet having a different phase structure in which the ricone gel layer and the silicone elastomer layer are continuous in this manner, the adhesiveness on the surface of the silicone gel layer is too high and difficult to handle, and the highly adhesive silicone gel layer has skin, When foreign matters such as these adhere, it is difficult to remove them, and there is a problem that the repaired portion is put into a bacteriologically unsanitary state.
[0006]
The present inventor examined the effect of the silicone rubber sheet used for repairing hypertrophic scars and the like. As a result, the silicone gel sheet does not necessarily have an adhesive force for repairing hypertrophic scars and the like. It is only necessary to apply external pressure to push in hypertrophic scars, etc. It is not necessary to apply such external pressure continuously for a long time. I found out.
[0007]
[Non-Patent Document 1]
Burns. Volume 9, p201-204
[Patent Document 1]
Japanese Unexamined Patent Publication No. 3-75055
[Patent Document 2]
JP-A-1-34370
[Patent Document 3]
Japanese Patent Laid-Open No. 11-319065
[0008]
OBJECT OF THE INVENTION
It is an object of the present invention to provide a scar repair sheet that can repair scars that have become hypertrophic scars or keloids due to damage such as burns or other trauma, and is very easy to use. .
[0009]
Summary of the Invention
  The scar repair sheet of the present invention,Functionality containing an aliphatic functional group-containing silicone oil containing a vinyl group as a functional group and a hydrogen polysiloxane that is a crosslinking agent containing three or more SiH bonds in one molecule in the molecule. It contains SiH groups in an amount of 0.5 to 2.0 equivalents with respect to 1 equivalent of the group, and as a reaction inhibitor, any of methylvinylcyclotetrasiloxane, acetyl alcohols, siloxane-modified acetyl alcohol, and hydroperoxide A platinum complex soluble in silicone oil as a reaction catalyst, or a platinum alcohol-modified complex of platinum or a methylvinylpolysiloxane complex of platinum in an amount of 1 to 100 ppm,Hardness measured with Rockwell hardness tester type A for the cured product when cured at 150 ° C. for 1 hour is 5 to 15 degrees.Silicone gelSilicone raw materialAsFrom a silicone rubber sheet formed usingIn addition, the affected part contact surface of the silicone rubber sheet is formed flat, and when the affected part contact surface comes into contact with the affected part, the surface located on the outer side has a number of grooves in the vertical direction and / or the lateral direction. Is formed, and the surface of the surface facing the outside is defined by the groove.
Further, the scar repair sheet of the present invention has a substantially uniform cured state on the front surface and the back surface of the silicone rubber sheet, and the SRIS (Japan Rubber Association Standard) Asker C type rubber constant pressure load hardness meter for the silicone rubber sheet. It is preferable that the hardness measured under the constant pressure load application of 1000 g is in the range of 25-40.
[0010]
Affixing the above scar repair sheet to the affected area for 4 to 10 hours in a day (24 hours), and by continuing this, hypertrophic scars are repaired and scars are hardly noticeable. . That is, it is more effective for repairing hypertrophic scars, etc., to keep the silicone rubber sheet pressed against the wound for a predetermined time than to press the wound repair sheet made of a silicone rubber sheet against the wound for a long time. I found it. The pressure contact of the silicone rubber sheet with such a wound does not require that the silicone rubber sheet has adhesiveness, and the silicone rubber sheet is pressed against the wound with a constant pressure. It has been found that the property of being able to continue to impart is important.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the scar repair sheet of the present invention will be specifically described.
The scar repair sheet of the present invention is formed using a silicone raw material having a hardness measured with a Rockwell hardness meter type A of a cured product when cured at 150 ° C. for 1 hour, within a range of 5 to 15 degrees. Made of a silicone rubber sheet. That is, the scar repair sheet of the present invention is composed of a silicone rubber sheet, and the silicone raw material forming the silicone rubber sheet is measured with a Rockwell hardness meter type A of a cured product obtained by curing at 150 ° C. for 1 hour. A silicone compound having a hardness of 5-15 degrees, preferably 6 ± 1 degrees. And the silicone rubber sheet which forms the scar repair sheet | seat of this invention is formed by hardening the above silicone compounds. The silicone compound used here is an addition-type liquid silicone rubber having a low cross-linking density. Even if an attempt is made to measure the rubber hardness according to JIS-K-6301 for this addition-type liquid silicone rubber, effective rubber hardness is not shown. A composition composed of a viscous silicone compound having a specific consistency, and such a composition is usually called a silicone gel.
[0012]
Such a silicone gel usually contains a functional group-containing silicone oil, a hydrogen polysiloxane as a crosslinking agent, and a reaction inhibitor, and further contains a reaction catalyst.
Here, as the functional group-containing silicone oil, it is preferable to use a silicone oil having an aliphatic unsaturated hydrocarbon group as a functional group, and examples of the aliphatic unsaturated hydrocarbon group include a vinyl group.
[0013]
The hydrogen polysiloxane used as a crosslinking agent is a relatively low molecular weight polymer having a SiH bond in the molecule, and usually a low molecular weight polymer having three or more SiH groups in one molecule. This crosslinking agent is usually used in an amount such that the SiH group is usually 0.5 to 2.0 equivalents, preferably 1.2 to 2.2. It is used in such an amount that it becomes 0 equivalent.
[0014]
Examples of the reaction inhibitor include methyl vinyl cyclotetrasiloxane, acetyl alcohols, siloxane-modified acetyl alcohol, and hydroperoxide.
In addition, a metal of Group VIII of the Periodic Table can be used as a reaction catalyst. In the present invention, platinum alcohol-modified complex which is a platinum complex soluble in silicone oil, and methylvinylpolysiloxane complex of platinum are preferable. Etc. can be used. Such a reaction catalyst is usually used in an amount of 1 to 100 ppm.
[0015]
The silicone rubber sheet used as a scar repair sheet in the present invention is produced by uniformly forming a crosslinked structure on the silicone gel as described above and curing it.
That is, the silicone gel as described above is a viscous material exhibiting strong adhesiveness, and the scar repair sheet of the present invention is a cured product obtained by casting and curing such a silicone gel. The average thickness of the silicone gel at this time is usually 0.5 to 15 mm, preferably 1 to 10 mm. By setting it as such thickness, the sheet | seat which has a uniform crosslinking density in the thickness direction can be manufactured.
[0016]
There is no particular limitation on the method for curing such a silicone gel, and it can be cured by irradiation with energy rays such as light, ultraviolet rays, and electron beams. In the present invention, such a silicone gel can be cured by heat. preferable.
That is, the above silicone gel is put in a mold, and the mold temperature is usually 150 to 200 ° C., preferably 170 to 180 ° C., and usually heated for 60 to 120 seconds as one cycle. A crosslinked structure is uniformly formed on the silicone gel placed in the mold and cured to form a silicone rubber sheet. In the present invention, the front and back surfaces of the silicone rubber sheet are substantially uniformly cured, and this silicone rubber sheet is measured using a SRIS (Japan Rubber Association Standard) Asker C type rubber constant pressure load hardness meter. The hardness measured under a constant pressure load of 1000 g is usually in the range of 25-40, preferably in the range of 28-39. The Asker C-type rubber constant pressure load hardness meter used in the present invention is an ASKER C-type hardness meter of the CL-150L series of rubber hardness measurement constant pressure loaders manufactured by Kobunshi Keiki Co., Ltd.
[0017]
Thus, the specific adhesiveness seen in a silicone gel lose | disappears because the silicone rubber sheet obtained by hardening a silicone gel hardens | cures so that it may have rubber hardness.
Such a silicone rubber sheet is a uniformly cured sheet having a substantially equal cured state on the front surface and the back surface, and also in an equal cured state in the thickness direction of the silicone rubber sheet.
[0018]
By curing in this way, the adhesive strength as in the silicone gel disappears on the front and back surfaces of the silicone rubber sheet, but usually the adhesiveness remains slightly on the surface.
Although the scar repair sheet of the present invention is not so strong, it has a significant surface adhesive force when it is applied. When the scar repair sheet of the present invention is applied to the skin, the scar repair sheet is moist. If it is given a feeling of close contact with the skin, and if it is lightly fixed with an elastic bandage or the like, it is possible to develop the characteristic that the scar repair sheet does not slip over the skin even with some movement.
[0019]
In addition, the silicone rubber sheet has high rubber elasticity and flexibility, has a much higher strength than the silicone gel sheet, and has good shape following ability. Therefore, it can be deformed following the form of the affected part to be contacted. Furthermore, since it has rubber elasticity, for example, by sticking and fixing to a movable part such as an elbow or knee, it can be expanded and contracted when the elbow and knee are bent and stretched, and pressure can be continuously applied to the affected part.
[0020]
Moreover, this silicone rubber sheet has moderate self-form-retaining property, and can keep the hypertrophic scar confined by applying pressure from the outside to the hypertrophic scar and the like by fixing it in contact with the affected part.
When silicone rubber sheets are applied to scars such as keloids and hypertrophic scars that occur when the trauma is completely cured, for example, to repair obese thick scars, silicone rubber sheets are worn continuously for a long period of time. It is not always necessary to continue to press, and it is more effective to eliminate obesity thick scars and the like by continuing to press the affected area for a certain period of time for a long time in one day. Such a silicone rubber sheet can contact the affected part when there is little movement of the body such as during sleep. Therefore, the wearing time is long like the conventional silicone gel sheet, and it is necessary that the silicone gel sheet is firmly attached to the affected part when the silicone gel sheet is applied while acting. The high adhesiveness of such a silicone gel sheet is not always necessary during sleep with little movement. Conversely, if the adhesiveness of the surface that contacts the affected area is high, as in conventional silicone gel sheets, skin, skin isolates and skin secretions may adhere to this adhesive part. It is not easily removed by washing the gel sheet. Furthermore, the scars may become unsanitary due to the skin, skin isolate and skin secretions attached by the high adhesive strength of conventional silicone gel sheets.
[0021]
From the viewpoint of repairing and eliminating obesity thick scars, etc., the surface hardness of the silicone rubber sheet and the self-form-retaining property of the silicone rubber sheet rather than the adhesiveness of the surface of the scar repair sheet, and further this silicone rubber When the sheet is placed on the affected area, it becomes important what kind of pressure is applied to the obese thick scar from the outside.
[0022]
Therefore, the scar repair sheet of the present invention comprises a silicone rubber sheet obtained by curing a silicone gel so as to have a predetermined rubber hardness as described above, and this silicone rubber sheet is a specific adhesive such as a silicone gel. Does not have sex. Such a scar repair sheet of the present invention is attached to the surface of a keloid scar, obese thick scar, etc., and if necessary, it is fixed with an adhesive tape or a bandage to apply a uniform pressure to the scar from the outside. Can be granted. The scar repair sheet need not always be stuck to the scar, and may usually be stuck for 4 to 10 hours, preferably 4 to 8 hours during the day (24 hours). For example, it may be attached during sleep. By sticking the scar repair sheet of the present invention for at least several weeks, obesity thick scars and the like start to disappear from the skin surface due to the shape restoring force of the silicone rubber sheet. The pigment deposited on the scar is also dispersed, and the scar gradually becomes inconspicuous. If it is a mild obesity thick scar, a scar will become inconspicuous in about one to two months, and even if it is a considerably severe obesity thick scar, it will disappear by using for about one year. In addition, if improvement of repair is seen in the scars in the above period, the scratches may be improved by continuing for a longer period.
[0023]
As described above, since the scar repair sheet is used for a long period of time, it has a strong adhesive force on the surface like a silicone gel sheet and cannot be used repeatedly if the strength is low. By curing the silicone gel sheet so that the rubber hardness is within a specific range like a restoration sheet, the stickiness disappears and it can be used repeatedly. Without being used, it can be used for a long time.
[0024]
And according to the study of the present inventor, when such a sheet is stuck on the skin for a long time, keloid, obesity thick scar, etc. It is effective to apply a pressure to the tissue for a relatively short time to lengthen this pressurization period. The time for applying this pressure is usually about 4 to 10 hours, preferably about 4 to 8 hours per day.
[0025]
Furthermore, the scar repair sheet of the present invention has very excellent rubber elasticity, and this rubber elasticity is superior to the silicone gel sheet. Therefore, even if the scar repair sheet of the present invention is attached to a movable part such as an elbow or a knee, for example, the scar repair sheet does not break, following the movement of the movable part. The mobility of the movable part is not impaired by the scar repair sheet.
[0026]
In the scar repair sheet 10 of the present invention, the outer surface 12 that faces the outside and the affected part contact surface 15 that contacts the skin can both be formed flat, but as shown in FIG. A large number of grooves 12 are formed in the longitudinal direction and / or the lateral direction on the outer surface 11 of the medical sheet 10 (the surface located outside when the affected part contact surface comes into contact with the affected part). The surface is preferably partitioned by the groove 12. As shown in FIG. 2, the section 13 formed in this manner preferably has a cross-sectional shape in which the central portion of each section 13 is raised. As shown in FIG. 3, by forming the central portion of each section 13 so as to rise, as shown in FIG. 3, when this scar repair sheet 10 is pressed against the skin 20 and pressure is applied to the hypertrophic scar 21, the hypertrophic scar Pressure is uniformly applied from around the area 21, and the hypertrophic scar 21 is healed in a relatively short period of time. Further, the groove 12 formed in the scar repair sheet 10 of the present invention serves as a cutting positioning means when the scar repair sheet 10 is cut and used.
[0027]
Further, the silicone rubber sheet forming the scar repair sheet 10 of the present invention is formed by connecting a rectangular thick part or a square thick part 31 having a side of 10 to 40 mm with a thin part 32, and the center of the square thick part 31. It is preferable that the thickness is formed so that the thickness continuously increases from the peripheral portions 34, 34, 34, 34 toward the center so that the portion becomes the apex 33. Further, it is preferable that the ridgelines 36, 36, 36, 36 are formed in an uneven thickness from the apex 33 toward the four corners 35, 35, 35, 35 of the square thick portion. In the scar repair sheet 10 having such a configuration, the thickness of the apex 33 at the center of the square thick portion 31 is in the range of 1 to 15 mm, and the thickness of the corner portions 35, 35, 35, 35 is 2 It is in a range of ˜14 mm and is formed thinner than the apex 33. Further, the peripheral portions 34, 34, 34, 34 are formed so as to be thinnest at the intermediate points, and are unevenly distributed so that the thickness continuously increases from the intermediate points toward the corner portions 35, 35, 35, 35. Is formed. Moreover, the thin part 32 has a thickness of 1/2 or less of the thickness of the thinnest part of the square thick part 31.
[0028]
In this way, the pyramid shape is formed so that the ridge line 36 is formed from the four corners 35 toward the central vertex 33, so that at the center of the square thick part 31 where the scratches abut when adhered. The pressure applied to the scar becomes the highest, the peeling force from the skin stuck at the peripheral edge becomes the weakest, and the scar repair sheet 10 can be stuck stably and also suitable for the recovery of the scar. Can be granted.
[0029]
The thin portion 32 is a portion to be cut when the scar thickness repair sheet 10 of the present invention is cut and the square thick portion 31 is used independently, and the scar repair sheet 10 is arc-shaped scar. When sticking to, it becomes an easy bending part.
The scar repair sheet of the present invention comprises a silicone rubber sheet obtained by curing a silicone gel as described above, and for example, tourmaline powder and / or ceramic powder can be blended with the silicone rubber sheet. For example, by blending ceramic powder, far-infrared rays can be generated from this silicone rubber sheet (scratch repair sheet), and tourmaline powder is said to generate negative ions. Thus, it is possible to further improve the therapeutic effect of hypertrophic scars and the like. When blending such Torma lympher and / or ceramic powder, it is preferable to knead these in a silicone gel and disperse them uniformly before curing. The tourmaline powder or ceramic powder is used in an amount of usually 0.001 to 0.1 parts by weight, preferably 0.025 to 0.05 parts by weight, based on 100 parts by weight of the silicone gel. The In FIGS. 2 and 3, these powders are indicated by reference numeral 22.
[0030]
In addition, when blending powders such as those described above, and when forming a sheet from a silicone gel, the silicone gel may involve air, and if it is cured as it is, many bubbles will be contained in the silicone rubber sheet. Therefore, when kneading such a silicone gel, it is preferable to remove bubbles contained by once exposing the silicone gel to a reduced pressure state.
[0031]
【The invention's effect】
The scar repair sheet of the present invention is formed from a silicone rubber sheet having a specific rubber hardness obtained by curing a silicone gel, and the scar repair sheet is attached to a keloid scar, a hypertrophic scar, or the like. Thus, these scars can be restored to a natural state. In particular, the scar repair sheet of the present invention is highly effective in eliminating hypertrophic scars having a scar history of about 3 to 6 months. If an effect is observed by sticking the scar repair sheet of the present invention during such a period, the sticking period can be lengthened.
[0032]
Furthermore, by incorporating tourmaline powder and / or ceramic powder in the scar repair sheet, the effect of eliminating scars, particularly keloid scars and hypertrophic scars, is amplified.
The disappearance of scars such as keloid scars and hypertrophic scars reduces the psychological burden.
[0033]
【Example】
Next, although the Example of this invention is shown and it demonstrates in detail about the sheet | seat for scar repair of this invention, this invention is not limited by these.
[0034]
[Example 1]
A silicone oil having vinyl groups at both ends, a hydrogen polysiloxane having a SiH group as a crosslinking agent, and a silicone rubber containing a reaction inhibitor were blended, and a catalyst was blended to prepare a silicone gel. This silicone gel had a specific consistency.
[0035]
Further, the hardness of the cured product obtained by curing the silicone gel at 150 ° C. for 1 hour was measured with a Rockwell hardness meter type A and found to be 5 degrees.
Next, the silicone gel was placed in a mold having a depth of 6 mm, a width of 50 mm, and a length of 145 mm, and the mold temperature was set to 180 ° C. and cured by heating for 60 seconds to prepare a silicone rubber sheet. In this mold, a plurality of protrusions having a height of 2 mm are formed vertically and horizontally to form a groove as shown in FIG. 1, and the silicone rubber sheet is formed vertically corresponding to the protrusions. And a groove part is formed in the side and the silicone rubber sheet obtained is divided. In addition, each section has a concave central portion of each section of the mold so that the silicone thickness is greatest at the central portion. The silicone rubber sheet thus obtained was measured for hardness under a constant pressure load of 1000 g using a SRIS (Japan Rubber Association Standard Specification) Asker C2 rubber constant pressure load hardness meter, and the average hardness was 31 (average value of 6 points). )Met. The Asker C type rubber constant pressure load hardness meter used for this hardness measurement is an ASKER C type hardness measurement meter of CL-150L series of rubber hardness measurement constant pressure loaders manufactured by Kobunshi Keiki Co., Ltd.
A 25 mm × 25 mm test piece was cut out from the silicone rubber sheet thus produced, and the test piece was attached to the skin as a scar repair sheet. The scar repair sheet had a weak surface adhesion. It was possible to adhere well to the skin surface by this surface adhesive force.
[0036]
Separately, a 25 mm × 150 mm scar repair sheet made of the above-mentioned silicone rubber sheet was used to produce a hypertrophic scar with a length of 20 mm, a width of 5 mm, and a thickness of 3 mm formed on the back of the ankle joint (scar history 5 months ) And fixed with a bandage for 6 hours a day. Thus, the hypertrophic scar was improved by continuously applying pressure for 6 hours every day for 11 months using the scar repair sheet.
[0037]
Further, a silicone rubber sheet is formed by curing with a silicone gel so that the hardness measured with a Rockwell hardness tester type A is 10 degrees, and this silicone rubber sheet is subjected to SRIS (Japan Rubber Association) in the same manner as described above. Standard) When the hardness was measured under a constant pressure load of 1000 g using an Asker C type rubber constant pressure load hardness tester, the average hardness was 38 (average value of 6 points).
[0038]
By using this silicone rubber sheet as a scar repair sheet in the same manner as described above, the same improvement was observed for hypertrophic scars.
[0039]
[Example 2]
When preparing said silicone gel, the silicone rubber sheet was prepared similarly except having knead | mixed 0.05 weight part tourmaline powder with respect to 100 weight part of silicone gel prepared. This silicone rubber sheet has a hardness measured by Rockwell Hardness Tester Type A of 10 degrees, and in the same manner as described above, a constant pressure load of 1000 g using a SRIS (Japan Rubber Association Standard Specification) Asker C type rubber constant pressure load hardness meter. The average hardness measured under application was 38 (average value of 6 points).
[0040]
A scar repair sheet cut out to a size of 25 mm × 15 mm from the obtained tourmaline powder-containing silicone rubber sheet was formed on the back side of the heel with a 10 cm long, 1 cm wide, 5 mm thick hypertrophic scar (scar history 6). A month) and fixed with a bandage for 6 hours a day. Thus, the hypertrophic scar was improved by continuously applying pressure for 6 hours every day for 2 months using the scar repair sheet.
[0041]
[Example 3]
The silicone gel containing the tourmaline powder used in Example 2 was cured under the conditions shown in Example 1.
However, in the mold used in this example, on one surface of the obtained scar repair sheet, as shown in FIG. 4, a vertex is formed at the center, and a gentle ridge line from this vertex toward the corner Is formed in an uneven thickness. In addition, the thickness at the center vertex of the square thick portion of the scar repair sheet is 2.05 mm, the thickness of the corner (the tip of the top of the ridge line) is 2.00 mm, and the thickness at the middle portion of the peripheral portion Thickness is 1.50mm. Long side length is 48mm and short side length is 24.5mm. The rectangular thick part is 1.02mm thin part (width is about 2mm). The strips are connected in a strip shape with a length of 147.4 mm and a width of 51.2 mm.
[0042]
A sheet of about 48 mm × 24 mm in size is cut out from this sheet, and this scar repair sheet is applied to a hypertrophic scar (5 months of scar history) having a length of 30 mm, a width of 8 mm and a height of 5 mm on the upper arm. Touched and fixed with bandage for 6 hours a day. Thus, the hypertrophic scar was improved by continuously applying pressure for 6 hours every day for 2 months using the scar repair sheet.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an example of a scar repair sheet of the present invention.
FIG. 2 is a cross-sectional view showing an example of a cross section of a scar repair sheet of the present invention.
FIG. 3 is an explanatory diagram for explaining a state in which the scar repair sheet of the present invention is disposed on the hypertrophic scar and the hypertrophic scar disappears.
FIG. 4 is a cutaway perspective view showing an example of a preferable shape of the scar repair sheet of the present invention.
[Explanation of symbols]
10 ... Scratch repair sheet
11 ... Outer surface
12 ... Groove
13 ... division
15 ... Affected part contact surface
20 ... Skin
21 ... Hypertrophic scar
22 ... Powder
31 ... Square thick part
32 ... Thin section
33 ... Vertex
34 ... peripheral part
35 ... Corner
36 ... Ridge line

Claims (5)

An aliphatic functional group-containing silicone oil containing a vinyl group as a functional group;
Hydrogen polysiloxane which is a crosslinking agent containing 3 or more SiH bonds in one molecule is 0.5 to 2.0 equivalents of SiH groups with respect to 1 equivalent of functional groups contained in the silicone oil. Contains, and
Contains any of methylvinylcyclotetrasiloxane, acetyl alcohols, siloxane-modified acetyl alcohol, hydroperoxide as a reaction inhibitor,
A platinum complex soluble in silicone oil as a reaction catalyst, or a platinum alcohol-modified complex of platinum or a methylvinylpolysiloxane complex of platinum in an amount of 1 to 100 ppm,
The silicone gel hardness measured Rockwell hardness tester type A for cured product when cured under conditions of 1 hour at 0.99 ° C. is 5-15 degrees Ri Do silicone rubber sheet formed by using a silicone material,
The affected part contact surface of the silicone rubber sheet is formed flat, and a large number of grooves are formed in the vertical direction and / or the lateral direction on the outer surface when the affected part contact surface contacts the affected part. A scar repair sheet , characterized in that the surface of the surface facing the outside is partitioned by the groove . Hardness measured with a constant pressure load of 1000 g using the SRIS (Japan Rubber Association Standard) Asker C type rubber constant pressure load hardness meter with the silicone rubber sheet in a uniform cured state on the front and back surfaces. The scar repair sheet according to claim 1, wherein is in the range of 25-40.   2. The scar repair sheet according to claim 1, wherein the silicone rubber sheet has rubber elasticity.   2. The scar repair sheet according to claim 1, wherein the silicone rubber sheet has an average thickness in the range of 0.5 to 15 mm. The above-mentioned silicone rubber sheet is formed by connecting a square thick portion or a rectangular thick portion having a side of 10 to 40 mm with a thin portion, and the center portion of the square thick portion is directed from the peripheral portion to the central portion. In addition to being formed in an uneven thickness so that the wall thickness increases continuously, it is formed in an uneven thickness so as to form ridge lines from the apex toward the four corners of the square or rectangular wall thickness portion. 2. The scar repair sheet according to claim 1, wherein the scar repair sheet is provided.

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