Article fixing device, method for removing article and adhesive sheet unit

Abstract

Provided are an article fixing device, a method for removing an article, and an adhesive sheet unit capable of reducing damage to an adherend. An article fixing device for fixing an article on an adherend, the article fixing device comprising a protective layer capable of being formed on the adherend and comprising a first main surface facing the adherend and a second main surface opposite the adherend; and an adhesive sheet unit for adhering to the second main surface of the protective layer. The adhesive sheet unit includes a first adhesive layer for bonding to the second main surface, and is formed to be stretchable in at least two directions when the article is attached.

Description

Technical Field

[0001] One aspect of the present invention relates to an article securing device, a method for removing an article, and an adhesive sheet unit. Background Art

[0002] With the advancement and popularity of wearable device technology, there are more and more opportunities to fix various medical devices and health monitoring devices directly to the skin, even in medical practice. For continuous and reliable monitoring and sensing, the device needs to be firmly fixed to the skin. Medical tape is often used to fix the device. Together with the fixing force, the purpose is not to apply load to the skin when removing it. Especially when the device is integrated on medical tape, removing the device will tear the tape off the skin without any angle. As a result, the skin is lifted significantly, and problems such as skin peeling and skin tearing may occur.

[0003] Patent Document 1 below discloses an acrylic adhesive medical tape with controlled adhesive force. Patent Document 2 below discloses a silicone adhesive medical tape. These tapes can reduce the risk of the above-mentioned problems, but due to insufficient fixing force, they cannot provide the original purpose of monitoring and sensing in some cases. In recent years, there are more and more cases where monitoring and sensing are performed continuously for a long period of time of one week, two weeks or longer, and it is required to achieve both a strong fixing force and a reduction in the load on the skin when removing. Summary of the invention Technical issues

[0004] Here, when removing the product from the adherend, the product fixing device must be peeled off from the adherend. When the product fixing device is peeled off in a state where the product is attached, the product fixing device is peeled off from the adherend without forming an angle, so there is a problem of damaging the adherend.

[0005] An object of one aspect of the present invention is to provide an article fixing device, a method for removing an article, and an adhesive sheet unit capable of reducing damage to an adherend. Solution to the problem

[0006] A product fixing device according to one embodiment of the present invention is a product fixing device for fixing a product on an adherend, the product fixing device comprising: a protective layer configured to be formed on the adherend, the protective layer comprising a first main surface facing the adherend and a second main surface opposite to the adherend; and an adhesive sheet unit configured to be bonded to the second main surface of the protective layer, wherein the adhesive sheet unit comprises a first adhesive layer configured to be bonded to the second main surface, and the adhesive sheet unit is formed to be able to be stretched in at least two directions when the product is attached.

[0007] A method for removing an article according to one embodiment of the present invention is a method for removing an article fixed by the above-mentioned article fixing device, the method comprising separating an adhesive sheet unit from a protective layer by stretching the adhesive sheet unit in at least two directions, leaving the protective layer on an adherend.

[0008] An adhesive sheet unit according to one embodiment of the present invention is disposed between an article and a protective layer formed on an adherend when the article is fixed on the adherend, the adhesive sheet unit comprising a first adhesive layer bonded to the protective layer, wherein the adhesive sheet unit is formed to be stretchable in at least two directions when the article is adhered. Beneficial Effects of the Invention

[0009] According to one embodiment of the present invention, damage to an adherend can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is a perspective view of an article securing device according to one embodiment.

[0011] FIG. 2 is a cross-sectional view of an article securing device.

[0012] 3 is a cross-sectional view of an article securing device.

[0013] Figure 4 is a cross-sectional view of a product fixture.

[0014] FIG. 5 is a plan view illustrating an adhesive sheet unit.

[0015] FIG. 6 is a view illustrating a procedure of fixing and removing an article by the article fixing device.

[0016] FIG. 7 is a plan view illustrating an adhesive sheet unit.

[0017] FIG. 8 is a plan view illustrating an adhesive sheet unit.

[0018] FIG. 9 is a plan view illustrating an adhesive sheet unit.

[0019] FIG. 10 is a plan view illustrating an adhesive sheet unit.

[0020] FIG. 11 is a plan view illustrating an adhesive sheet unit.

[0021] FIG. 12 is a plan view illustrating an adhesive sheet unit.

[0022] Fig.13 is a table showing components that may be selected for testing.

[0023] Fig.14 is a table showing components that may be selected for testing.

[0024] FIG. 15 is a view showing test results of peel adhesion and tensile adhesion.

[0025] FIG. 16 is a view showing test results of peel adhesion and tensile adhesion.

[0026] Fig.17 is a table illustrating test conditions and test results of Examples and Comparative Examples.

[0027] Fig.18 is a table showing the results of the static shear test.

[0028] Fig.19 is a table showing test results of a tensile strength test. DETAILED DESCRIPTION

[0029] A detailed description of an embodiment of the present invention is given below with reference to the accompanying drawings. In the description of the accompanying drawings, the same or equivalent elements are denoted by the same reference numerals, and redundant descriptions of such elements will be omitted.

[0030] The article fixing device 1 according to the present embodiment is a member for fixing the article 2 on the adherend 3. The adherend 3 is, for example, human skin. In addition, the adherend 3 can be the skin of an animal, etc., but is not limited thereto. The article 2 is various devices attached to human skin. As the article 2, various devices such as a continuous blood sugar measurement sensor, an insulin pump, a heart rate sensor, a thermometer, various wearable devices, an IC chip, and an NFC tag are used.

[0031] like Figure 1 As shown in Fig. 2 (a), product fixing device 1 comprises protective layer 4 and adhesive sheet unit 5.Protective layer 4 is a member formed on adherend 3.Protective layer 4 can be formed on adherend 3, and comprises first main surface 4a facing adherend 3 and second main surface 4b on the opposite side of adherend 3.As shown in Fig. 2 (a), protective layer 4A comprises protection substrate 11 with second main surface 4b and second adhesive layer 12 formed on first main surface 4a.Protective substrate 11 is a sheet-like member for supporting second adhesive layer 12 formed on first main surface 4a side.Second adhesive layer 12 is a member for bonding to adherend 3.

[0032] As shown in FIG. 2( b ), the protective layer 4B may be formed as a protective coating by applying a protective liquid to the adherend 3 .

[0033] The second adhesive layer 12 of the protective layers 4A and 4B may have a holding force of 50 minutes or more, 200 minutes or more, or 500 minutes or more with respect to Protein Leather (trade name; IDEATEX JAPAN Co., Ltd) under conditions of 30° C., 75% RH, and a load of 300 g.

[0034] As the component of the second adhesive layer 12 in the protective layer 4A shown in Fig. 2 (a), for example, the following components can be adopted.For the second adhesive layer 12, usually, an adhesive suitable for medical applications can be adopted.Generally speaking, the preferred adhesive for medical use includes acrylic pressure-sensitive adhesive, rubber-based pressure-sensitive adhesive and silicone-based pressure-sensitive adhesive, such as those described in PCT WO 03057741, PCT WO 9918166 and PCT WO 0032142.For example, the rubber-based pressure-sensitive adhesive can be a mixture of synthetic rubber such as styrene-isoprene-styrene (SIS) rubber and tackifier such as rosin-based tackifier.The example of other synthetic rubbers also includes styrene butadiene styrene (SBS), styrene butadiene rubber (SBR), acrylonitrile-butadiene rubber (NBR), chloroprene rubber, silicone rubber, acrylic rubber, butyl rubber, polyurethane rubber, ethylene propylene rubber and fluororubber.

[0035] Another pressure-sensitive adhesive that can be used for the second adhesive layer 12 may be, for example, a copolymer of (i) at least one monoethylenically unsaturated (meth) acrylate (hereinafter referred to as "first monomer") having an alkyl group including at least 4 carbon atoms on average, and (ii) at least one monoethylenically unsaturated reinforcing monomer (hereinafter referred to as "second monomer"). In addition, as the second adhesive layer 12, those described in paragraphs 0013 to 0038 of JP 2009-530058 T may be used.

[0036] The protective substrate 11 as shown in FIG. 2 (a) can be any substrate that can be used as a pressure-sensitive adhesive tape in medical applications. For example, the protective substrate 11 can be a perforated film, an open-cell foam sheet, a foam or a laminated combination thereof, all of which are made of organic polymers. Examples of organic polymers include polyolefins such as polyethylene, polypropylene, polybutylene, ethylene-propylene copolymers, ethylene-vinyl acetate copolymers, ethylene-ethyl acrylate copolymers; polyurethanes; polyesters; polyamides; and other plastics. The protective substrate 11 itself can also be breathable and moisture-permeable. For example, the protective substrate 11 can be made of fabrics, nonwoven fabrics, meltblown webs, foams, spunbond webs, thermally bonded webs, jet-spun webs, paper and heat-embossed nonwoven fabrics and those described in US 5,496,603. More specifically, examples of the protective substrate 11 can be textiles, cotton, knitted or nonwoven fabrics of organic polymers such as polyvinyl alcohol or cellulose, paper, and perforated films of polyvinyl alcohol. If necessary, the protective substrate 11 can be waterproofed with a known waterproofing agent. The protective substrate 11 can be elastic or inelastic. Preferably, the protective substrate 11 has good air permeability and moisture permeability, and also has good elasticity. Particularly preferred is an elastic cotton fabric (textile) or a nonwoven fabric. In addition, a waterproof substrate (e.g., a polyurethane film) can be used. The protective substrate 11 can have a thickness of 15 microns to 2,000 microns.

[0037] When the protective layer 4B shown in FIG. 2( b) is used, the protective layer 4B can be formed as follows. The protective layer 4B can be formed by a film-forming step of applying a primer containing a silicone acrylic resin and an alkane solvent to the skin to form a solid film on the skin. As the protective layer 4B, those described in paragraphs 0013 to 0025 of JP 2020-103427 A can be used.

[0038] The film-forming step is a step of forming a solid film on the skin by applying a primer containing a silicone acrylic resin and an alkane solvent to the skin. The silicone acrylic resin may be, for example, a homopolymer of siloxysilane having a (meth)acryloyloxy group, or a copolymer of siloxysilane and another polymerizable monomer.

[0039] Examples of siloxysilanes having a (meth)acryloxy group include 3-(meth)acryloxypropyltris(trimethylsiloxy)silane, 3-(meth)acryloxypropylpentamethyldisiloxane, 3-(meth)acryloxypropylbis(trimethylsiloxy)methylsilane, and 3-(meth)acryloxypropylmethylbis(trimethylsiloxy)silane. Such siloxysilanes may be used alone or in combination of two or more types.

[0040] Examples of polymerizable monomers that can form copolymers with siloxysilane include methyl (meth)acrylate, tetrahydrofurfuryl (meth)acrylate, cyclohexyl (meth)acrylate, n-lauryl (meth)acrylate, 2-phenoxyethyl (meth)acrylate, isodecyl (meth)acrylate, isooctyl (meth)acrylate, isobornyl (meth)acrylate, benzyl (meth)acrylate, 2-butoxyethyl (meth)acrylate, n-butyl (meth)acrylate, ethyl (meth)acrylate, dimethyl itaconate, di-n-butyl itaconate, 2-ethylhexyl (meth)acrylate, furfuryl (meth)acrylate, n-butyl (meth)acrylate, The polymerizable monomers include 1,2-dimethyl-1,2-dimethyl-1,2-dimethyl-1,2-dimethyl-1,2-dimethyl-1,2-dimethyl-1,2-dimethyl-1,2-dimethyl-1,2-dimethyl-1,2-dimethyl-1,2-dimethyl-1,2-dimethyl-1,2-dimethyl-1,2-dimethyl-1,2-dimethyl-1,2-dimethyl-1,2-dimethyl-1,2-dimethyl-1,2-dimethyl-1,2-dimethyl-1,2-dimethyl-1,2-dimethyl-1,2-dimethyl-1,2-dimethyl-1,2-dimethyl-1,2-dimethyl-1,2-dimethyl-1,2-dimethyl-1,2-dimethyl-1,2-dimethyl-1,2-dimethyl-1,2-dimethyl-1,2-dimethyl-1,2-dimethyl-1,2-dimethyl-1,2-dimethyl-1,2-dimethyl-1,2-dimethyl-1,2-dimethyl-1,2-dimethyl-1,2-dimethyl-1,2-dimethyl-1,2-dimethyl-1,2-dimethyl-1

[0041] like Figure 1 As shown in FIG. 2 (a), the adhesive sheet unit 5 is adhered to the second main surface 4b of the protective layer 4. The adhesive sheet unit 5 is formed to be able to stretch in at least two directions when the product 2 is attached. The adhesive sheet unit 5 is arranged between the product 2 and the protective layer 4 formed on the adherend 3 when the product 2 is fixed on the adherend 3. The adhesive sheet unit 5 can be formed by one adhesive sheet, or can be formed by combining multiple adhesive sheets (for example, refer to Figures 9, 10, and 12). As shown in Figure 2 (a), the adhesive sheet unit 5 includes a stretchable substrate 13, a first adhesive layer 14 for adhering to the second main surface 4b, and a third adhesive layer 16 for adhering to the product 2. The first adhesive layer 14 is formed on the protective layer 4 side of the substrate 13. The third adhesive layer 16 is formed on the product 2 side of the substrate 13.

[0042] As the adhesive sheet unit 5 shown in FIG. 2 (a), a stretchable double-sided tape can be used. The substrate 13 is formed of, for example, foam, and can be formed of a polymer foam. Examples of polymer foams include polyurethane foam, polyolefin foam (e.g., polyethylene foam and polypropylene foam) and acrylic foam. The adhesive layers 14 and 16 are formed of, for example, a pressure-sensitive adhesive (PSA).

[0043] As adhesive sheet unit 5, a multilayer film that can be used as an elastic substrate can be used as substrate 13. Substrate 13 can have a low elastic modulus to minimize the force required for elongation and stretching. Substrate 13 can have a low ductility to minimize the distance required for elongation and stretching. Preferably, most of the deformation of substrate 13 is plastic deformation, and elastic deformation is minimum. In order to achieve plastic deformation, substrate 13 can have a core and at least the first skin layer on one side of the core. The core can have a first skin layer on one side and a second skin layer on the other side. The multilayer film designed for maximum strength includes an elastic layer forming a core sandwiched between two plastic deformation layers forming a skin layer.

[0044] As shown in Fig. 2(b), the adhesive sheet unit 5 may be a stretch-release transfer tape formed of only the first adhesive layer 14 without the substrate 13. In the first adhesive layer 14 in this case, since the adhesive layer itself has appropriate stretchability and cohesive force even without the substrate 13, the adhesive layer can be stretched and peeled alone.

[0045] With reference to FIG5 , an example of the adhesive sheet unit 5 will be described. The adhesive sheet unit 5 of FIG5(a) is formed by an adhesive sheet 20. Note that the dimensions shown in FIG5(a) are merely examples and may be appropriately changed. The adhesive sheet unit 5 is in a rectangular shape having a longitudinal direction. The adhesive sheet unit 5 is formed to be able to stretch in at least two directions when the product 2 is attached. Here, the adhesive sheet unit 5 is formed to be able to stretch in two directions, a direction D1 on one side of the longitudinal direction and a direction D2 on the other side (refer to FIG5(b)).

[0046] The adhesive sheet unit 5 includes a plurality of tab portions 21, which do not adhere to at least one of the protective layer 4 and the product 2 when the product 2 is attached. At least two of the plurality of tab portions 21 are formed at positions facing each other, and the attachment position of the product 2 is between the at least two of the plurality of tab portions in the adhesive sheet unit 5. Here, the two tab portions 21 are formed at both ends in the longitudinal direction to face each other, and the attachment position of the product 2 is between the two ends. In the adhesive sheet unit 5, the portion other than the tab portion 21 is formed as an adhesive portion 22 having an adhesive force. The tab portion 21 does not have an adhesive force. Specifically, in the form of FIG. 2 (a), the portion of the substrate 13 where the adhesive layers 14 and 16 are not formed can be the tab portion 21. Therefore, the tab portion 21 does not adhere to the protective layer 4 and the product 2, and can therefore be easily grasped with fingers. As shown in FIG. 3 (a), one surface of the tab portion 21 may have an adhesive force so that it can be temporarily fixed to one of the protective layer 4A and the product 2. In the example of FIG. 3(a), as shown in FIG. 3(b), the tab portion 21 of the adhesive sheet unit 5 can be temporarily fixed to the article 2 (refer to the portion "A" in the figure). With this configuration, the feeling that the tab portion 21 becomes an obstacle during attachment can be reduced. When peeling, the temporarily fixed portion (dashed line portion) between the tab portion 21 and the article 2 is first peeled off, and then removed in the same manner as other forms. In the case of the example of FIG. 2(b), in order to form the tab portion 21, the coating 17 is formed so that the adhesive force of a portion of the first adhesive layer 14 does not work. The coating 17 can have any configuration, such as a film.

[0047] When it is preferred that the article 2 is in direct contact or proximity with an adherend 3 (e.g., human skin), a hole 23 may be formed in the adhesive sheet unit 5. A hole 24 may also be formed in the protective layer 4A (refer to 2(a)). For example, by forming the hole 24 of the protective layer 4A to be smaller than the hole 23 of the adhesive sheet unit 5, the first adhesive layer 14 may be prevented from directly adhering to the adherend 3. With this configuration, when the adhesive sheet unit 5 is peeled off, the adherend 3 may be prevented from being damaged.

[0048] Notice, Figure 4Illustrated the example of the construction before the article fixing device 1 of attachment Fig. 2 (a).Article fixing device 1 also includes peeling layer 41,42 and 43.Removal treatment agent is applied to the surface facing adhesive layer 12,14 and 16 of peeling layer 41,42 and 43.Peeling layer 41 is arranged on the first main surface 4a side of second adhesive layer 12.Peeling layer 42 is arranged on first adhesive layer 14, and peeling layer 43 is arranged to cover the third adhesive layer 16.When attaching, the user peels off peeling layer 41 and attaches protective layer 4 to adherend 3.Then, peeling layer 42 is peeled off, and first adhesive layer 14 is attached on second main surface 4b.At this moment, preferably, locate so that the position of hole 23 and hole 24 does not deviate from each other, then bond.The diameter of hole 23 is preferably greater than the diameter of hole 24, so that first adhesive layer 14 can not be directly attached to skin due to misalignment.After adhesive part 22 is attached, peeling layer 43 is peeled off, and device is bonded to the third adhesive layer 16. The third adhesive layer 16 may be provided on the adhesive portion 22 side, or may be provided on the device side and attached to the base material 13 .

[0049] Next, with reference to FIG6 , a method for fixing the product 2 by the product fixing device 1 and a method for removing the product 2 fixed by the product fixing device 1 will be described. As shown in FIG6 (a), first, a protective layer 4A is formed on an adherend 3. Next, as shown in FIG6 (b), an adhesive sheet unit 5 is attached to the protective layer 4B, and the product 2 is further attached thereto. Thus, the fixing of the product 2 is completed.

[0050] When removing the product 2, as shown in FIG6(c), the adhesive sheet unit 5 is stretched in two directions D1 and D2 while leaving the protective layer 4 on the adherend 3. Thus, as shown in FIG6(d), the adhesive sheet unit 5 is separated from the protective layer 4 together with the product 2. Next, as shown in FIG6(e), the protective layer 4 is peeled off from the adherend 3. A new product 2 can be fixed without peeling off the protective layer 4.

[0051] Next, the actions and effects of the article fixing device 1 , the method for removing the article 2 , and the adhesive sheet unit 5 according to the present embodiment will be described.

[0052] As wearable devices in the medical field, etc., various devices such as continuous blood glucose measurement sensors, insulin pumps, heart rate sensors, and thermometers are used for health management and physical condition management. Then, installing the device with stable skin contact and stable position is an important factor in obtaining reliable data. In the related art, medical tape is generally used for such fixation. When the wearable device is fixed with medical tape, there is a problem of damaging the skin when the medical tape is removed. Generally speaking, the medical tape should be removed in a slow peeling manner to minimize the damage to the skin during removal. However, when the medical tape is peeled off from the skin together with the hard device, there is a problem of increased damage to the skin. In addition, since the wearable device is repeatedly worn in the same position, there is a problem of damage accumulation on the skin.

[0053] On the other hand, the article fixing device 1 according to the present embodiment is an article fixing device 1 for fixing the article 2 on the adherend 3, and the article fixing device 1 includes: a protective layer 4 configured to be formed on the adherend 3, the protective layer including a first main surface 4a facing the adherend 3 and a second main surface 4b opposite to the adherend 3; and an adhesive sheet unit 5 configured to be bonded to the second main surface 4b of the protective layer 4, wherein the adhesive sheet unit 5 includes a first adhesive layer 14 configured to be bonded to the second main surface 4b, and the adhesive sheet unit 5 is formed to be able to be stretched in at least two directions when the article 2 is attached.

[0054] In this case, the article 2 is fixed to the adherend 3 using the adhesive sheet unit 5 and the protective layer 4 therebetween. When the article 2 is removed from the adherend 3, the adhesive sheet unit 5 can be separated from the protective layer 4 by stretching in at least two directions, and the protective layer 4 is left on the adherend 3. When the adhesive sheet unit 5 is separated, the article 2 is also removed from the protective layer 4. At this time, since the adhesive sheet unit 5 is removed under the state that the adherend 3 is covered by the protective layer 4, the damage to the adherend 3 is reduced. In addition, since the adhesive sheet unit 5 is peeled off while being stretched in the direction parallel to the surface of the adherend 3, the damage to the adherend 3 can be reduced, and the protective layer 4 can be suppressed from being peeled off. After removing the article 2, the protective layer 4 can only be peeled off from the adherend 3, thereby compared with the situation of peeling off the article 2 and the protective layer 4 at the same time, the damage to the adherend 3 can be reduced. Alternatively, even after removing the article 2, the protective layer 4 can be retained, and the protective layer 4 can be used when fixing a new article 2. In this case, since the replacement frequency of the protective layer 4 can be reduced, damage to the adherend 3 due to repeated peeling of the protective layer 4 can be reduced. In addition, when the adherend 3 is soft like skin, if the pressure-sensitive adhesive sheet unit 5 is formed to stretch in one direction, the adherend 3 may also stretch in one direction along with the stretching, and damage may occur or the adherend 3 may not be successfully peeled off.

[0055] The adhesive sheet unit 5 may have a plurality of tab portions 21 that are not bonded to at least one of the protective layer 4 and the product 2 when the product 2 is attached. In this case, the operator can easily grasp the tab portion 21 with his / her fingers and stretch the adhesive sheet unit 5.

[0056] At least two of the plurality of tab portions 21 may be formed at positions facing each other, with the attachment position of the article 2 being interposed between the at least two of the plurality of tab portions in the adhesive sheet unit 5. In this case, since the adhesive sheet unit 5 can be pulled from both sides across the article 2, the removal operation can be easily performed, and the manner in which the force is applied to the adhesive sheet unit 5 can be stabilized.

[0057] The protective layer 4 may include a protective base material 11 having a second major surface 4b and a second adhesive layer 12 formed on the first major surface 4a. In this case, an operator can hold the protective base material 11 and easily attach the protective layer 4 to the adherend 3.

[0058] The second adhesive layer 12 of the protective layer 4 can have a holding force for 50 minutes or more on Protein Leather (trade name) under the conditions of 30°C, 75% RH and 300g load. In this case, the protective layer 4 can be attached to the adherend 3 for a long time with a small load on the adherend 3.

[0059] The adhesive sheet unit 5 and the protective layer 4 are formed with holes 23 and holes 24, respectively, and the hole 24 of the protective layer 4 may be smaller than the hole 23 of the adhesive sheet unit 5. In this case, a needle or the like for injecting a drug may pass through the hole 24 and the hole 23. In addition, the first adhesive layer 14 of the adhesive sheet unit 5 may be prevented from protruding from the hole 24 of the protective layer 4 and being attached to the adherend 3.

[0060] The protective base material 11 of the protective layer 4 may have a tensile strength of less than 100 N / 25 mm. In this case, the protective layer 4 can be attached to the adherend 3 for a long time in a state where the load on the adherend 3 is small.

[0061] The protective layer 4 can be formed as a layer by applying a protective liquid to the adherend 3. In this case, the protective layer 4 can be formed to have a desired shape.

[0062] A method for removing an article according to the present embodiment is a method for removing an article 2 fixed by the above-mentioned article fixing device 1, the method comprising separating the adhesive sheet unit 5 from the protective layer 4 by stretching the adhesive sheet unit 5 in at least two directions, leaving the protective layer 4 on the adherend 3.

[0063] Depending on the method for removing the article, the same action and effect as the above-described article fixing device 1 can be obtained.

[0064] According to one embodiment of the present invention, the adhesive sheet unit 5 is arranged between the article 2 and the protective layer 4 formed on the adherend 3 when the article 2 is fixed on the adherend 3, and the adhesive sheet unit 5 includes a first adhesive layer 14 bonded to the protective layer 4, wherein the adhesive sheet unit 5 is formed to be able to be stretched in at least two directions when the article 2 is attached.

[0065] According to the adhesive sheet unit 5, the same action and effect as the above-mentioned product fixing device 1 can be obtained.

[0066] The present invention is not intended to be limited to the above-described embodiments.

[0067] The construction of the adhesive sheet unit 5 is not particularly limited. For example, the adhesive sheet unit 5 shown in Figure 7 can be used. The adhesive sheet unit 5 shown in Figure 7 (a) has a cross shape. A total of four tab portions 21 are formed at four end portions so as to clamp the position where the product 2 is attached in two directions. The adhesive sheet unit 5 can be stretched in four directions (directions D1 to D4). When removing the adhesive sheet unit 5, as shown in Figure 7 (b), the adhesive sheet unit 5 is stretched in directions D1 and D2 opposite to each other. Then, as shown in Figure 7 (c), the adhesive sheet unit 5 is stretched in directions D3 and D4 that are orthogonal to direction D1 and direction D2 and face each other.

[0068] The adhesive sheet unit 5 shown in FIG8 can be used. The adhesive sheet unit 5 shown in FIG8(a) is different from the adhesive sheet unit 5 shown in FIG5(a) in that the former includes a large elliptical hole 23. The hole 23 is an ellipse extending in the longitudinal direction of the adhesive sheet unit 5 and reaches the tab portions 21 on both sides. The other configurations of the adhesive sheet unit 5 of FIG8 are the same as those of FIG5.

[0069] The adhesive sheet unit 5 shown in Figure 9 can be used. The adhesive sheet unit 5 shown in Figure 9 (a) is formed by a combination of two adhesive sheets 20A and 20B. The adhesive portion 22 of each of the adhesive sheet 20A and the adhesive sheet 20B has a right triangle shape. The adhesive sheet 20A and the adhesive sheet 20B are arranged to face each other in a state where their hypotenuses 22a are separated from each other. Therefore, the adhesive sheet unit 5 is formed into a rectangular shape by the combination of the adhesive sheet 20A and the adhesive sheet 20B. The adhesive sheet unit 5 is formed to be able to stretch in two directions, the direction D1 on one side of the longitudinal direction and the direction D2 on the other side. When removing the adhesive sheet unit 5, as shown in Figure 9 (b), the adhesive sheet 20A is stretched and removed in the direction D1. Then, as shown in Figure 9 (c), the adhesive sheet 20B is stretched and removed in the direction D2.

[0070] The adhesive sheet unit 5 shown in Figure 10 can be used. The adhesive sheet unit 5 shown in Figure 10 (a) is formed by a combination of two adhesive sheets 20A and 20B. The adhesive portion 22 of each of the adhesive sheet 20A and the adhesive sheet 20B has an L shape. The adhesive sheet 20A and the adhesive sheet 20B are arranged to be point-symmetrical with respect to the center point CP. The adhesive sheet unit 5 is formed to be able to stretch in two directions, the direction D1 on one side and the direction D2 on the other side. When removing the adhesive sheet unit 5, as shown in Figure 10 (b), the adhesive sheet 20A is stretched in the direction D1. Then, as shown in Figure 10 (c), the adhesive sheet 20B is stretched in the direction D2. As shown in Figure 10 (d), since most of the areas of the adhesive sheets 20A and 20B are stretched and are in a state that is easy to peel off, the product 2 can be easily removed.

[0071] The adhesive sheet unit 5 shown in Figure 11 can be used. The adhesive sheet unit 5 shown in Figure 11 (a) is formed by an adhesive sheet 20. The adhesive sheet unit 5 has a shape in which a long adhesive sheet 20 is rolled into a circle. The adhesive sheet unit 5 can be stretched in one direction D1, and can be stretched in the direction DR over the entire circumference. In a state where it can be stretched in the direction DR, it can be stretched in all directions relative to the center point CP, so the adhesive sheet unit 5 can be stretched in multiple directions. When removing the adhesive sheet unit 5, as shown in Figure 11 (b), the adhesive sheet unit 5 is stretched in the direction D1. Then, while pulling the tab portion 21, the tab portion 21 is rotated in the direction DR over the entire circumference. Therefore, the adhesive sheet unit 5 is gradually peeled off.

[0072] The adhesive sheet unit 5 shown in Figure 12 can be used. The adhesive sheet unit 5 shown in Figure 12 (a) has a cross shape by combining four adhesive sheets 20A, 20B, 20C and 20D. The adhesive sheets 20A, 20B, 20C and 20D are arranged so that a total of four tab portions 21 are formed at the four end portions of the cross shape, thereby clamping the position where the product 2 is attached in two directions. The adhesive sheet unit 5 can be stretched in four directions (directions D1 to D4). When removing the adhesive sheet unit 5, as shown in Figure 12 (b), the adhesive sheet 20A is stretched and removed in direction D1. Then, as shown in Figure 12 (c), the adhesive sheet 20B is stretched and removed in direction D2. Then, as shown in Figure 12 (d), the adhesive sheet 20C is stretched and removed in direction D3. Then, as shown in Figure 12 (e), the adhesive sheet 20D is stretched and removed in direction D4. Evaluation Test

[0073] Various tests were performed to evaluate the article fixing device. The components that may be selected for testing are shown in Fig.13 and Fig.14Three types of stretch release adhesive tapes "SRT-1", "SRT-2" and "SRT-3" were prepared for testing. The stretch release adhesive tape is an adhesive tape used as an adhesive sheet unit in the embodiment. SRT-1: Double-sided tape of polyolefin film

[0074] First, a stretchable polyolefin film was prepared by coextruding AFFINITY 1850 and AFFINITY 8852. The layered structure of the film was "8852 / 1850 / 8852=0.8 mil / 0.4 mil / 0.8 mil". Next, an adhesive solution in which isooctyl acrylate and acrylic acid were copolymerized in a solution was prepared, and the adhesive solution was applied to FILMBYNA (trade name) TSB / TSC using a knife coater and dried (60°C for 2 minutes + 120°C for 2 minutes). The resulting PSA sheet had a thickness of about 20µm. After corona treatment, the obtained adhesive transfer tape was stacked on both surfaces of the stretchable polyolefin film to obtain "SRT-1" as a polyolefin film DC tape. SRT-2: Thick Acrylic Adhesive Transfer Tape

[0075] A mixture of "octyl acrylate / Omnirad 1173=100 / 0.02 (parts by mass)" was prepared and filled in a glass container. The dissolved oxygen in the mixture was replaced with nitrogen. Then, partial polymerization was carried out by ultraviolet irradiation for several minutes using a low-pressure mercury lamp to obtain a viscous liquid with a viscosity of about 5000 MPa∙s. 2 parts of acrylic acid and 0.15 parts of Omnirad 1173 were added to the viscous liquid and mixed with a Thinky mixer ARM-310. The resulting mixture was coated on FILMBYNA (trade name) TSB / TSC with a thickness of 500µm. Subsequently, in order to block oxygen that inhibits polymerization, Cerapeel (trade name) BKE was placed on the coating surface and irradiated with a low-pressure mercury lamp (1mW / cm 2 3 minutes and 5mW / cm 2 for 3 minutes). Thus, "SRT-2" was obtained as a thick acrylic adhesive transfer tape. SRT-3: Foamed polyethylene double-coated tape

[0076] A mixture of "2-ethylhexyl acrylate / isobornyl acrylate / 1,6-hexanediol dimethacrylate / Runtecure 1065 = 56.2 / 18 7 / 3 1 / 0.03 / 0.03 (parts by mass)" was prepared and filled into a glass container. The dissolved oxygen in the mixture was replaced with nitrogen. Then, partial polymerization was performed by ultraviolet irradiation for several minutes using a low-pressure mercury lamp to obtain a viscous liquid with a viscosity of about 3000 MPa∙s. 15 parts of IBOA, 1.8 parts of AA, 3 parts of DMAA, 0.48 parts of Runtecure 1065, 2 parts of ARKON P-115, and 0.4 parts of Superchlon (trade name) 930S were added to the viscous liquid and mixed with a Thinky mixer ARM-310. The resulting mixture was coated on FILMBYNA (trade name) TSB / TSC at a thickness of 100µm. Then, in order to block oxygen that inhibits polymerization, Cerapeel (trade name) BKE was placed on the coating surface and irradiated with a low-pressure mercury lamp (0.5 mW / cm 2 3 minutes and 70mW / cm 2 Next, Nipolon (trade name) TZ420 was extruded and stacked on both surfaces of a foamed polyethylene sheet Volara (trade name) XL-H1501 to a thickness of 10 to 20 µm, a corona treatment was applied to the new surface (re-surface), and then the adhesive transfer tape obtained above was laminated to obtain SRT-3. Adhesion between peel and stretch

[0077] In order to evaluate the difference in stress on the skin when removing the protective layer tape, the adhesion of the protective layer tape was compared between the peeling mode and the stretching mode. The peeling mode test assumes that the protective layer tape is removed after the product is removed by the patented method. A sample with a width of 25 mm is prepared and stacked on a PP plate using a 2 kg roller (50 mm / sec reciprocating motion). The tape is peeled off in a 180° direction using TENSILON at a test speed of 300 mm / min (refer to Figure 15 (a)). On the other hand, the stretching mode test assumes that the protective layer tape is removed together with the product by a known method. A sample with a width of 25 mm is prepared and stacked on a PP plate using a 2 kg roller (50 mm / sec reciprocating motion). A PMMA plate is stacked on the back of the stacked sample with #9889 (double-sided tape for skin adhesion, manufactured by 3M Company). The stacked samples were pulled in a 90° direction at a test speed of 300 mm / min using TENSILON (A&D Company, Limited) (refer to FIG. 15( b )).

[0078] The results of the above tests are shown in Figures 15(c) and (d). The adhesive force in the stretching mode is about 10 times that in the peeling mode. As described above, it can be seen that a large stress is applied to the skin in the known method, while the stress can be significantly reduced in the method of the present invention. The reduced stress means less pain during peeling and a reduced risk of skin tearing, etc.

[0079] Next, in order to compare the risk of skin peeling when removing the protective layer tape, a peeling test using cardboard was performed. First, a cardboard test substrate was prepared. C170 was cut into a size of 50 mm × 100 mm, and a half-cut grid of 3 mm × 3 mm size was provided by a pointed top die. The cutting depth was 60% of the total thickness. The cut C170 was stacked onto a 2 mm thick PP board using ST-416 (thin double-sided tape, manufactured by 3M Company) to obtain a cardboard test substrate.

[0080] Next, as a peel mode test, a 25 mm wide protective layer tape sample was stacked on a cardboard test substrate using a 2 kg roller, and then peeled off at a speed of 300 mm / min in a 180 degree direction. The number of damaged grids with an area of ​​25 mm×25 mm was counted at this time. As a tensile mode test, a 25 mm wide tape sample was stacked on a cardboard test substrate using a 2 kg roller, and then a PMMA plate was stacked on the back of the #9889 stacked sample. The stacked tape sample was pulled in a 90 degree direction at a test speed of 300 mm / min. The number of damaged grids with an area of ​​25 mm×25 mm was counted at this time.

[0081] The results of the above test are shown in Figures 16 (a) and (c). It was confirmed that there was a difference in damage between the peeling mode and the stretching mode of the peeling layer tape, and many meshes were removed in the stretching mode. It should be understood that this has a high risk of removing skin cells, skin tearing, skin peeling, etc. Comparison Test

[0082] Then, if Fig.17As shown, examples and comparative examples were prepared, and the extent to which skin damage can be suppressed by the product fixing device of the examples was evaluated. First, Medipore (trade name) with a width of 40 mm (adhesive area of ​​40 mm × 40 mm, with a tab of 25 mm in length) as a protective layer tape for the protective layer was stacked on the cardboard test substrate described in the grid test using the above cardboard and pressed sufficiently with fingers. Each adhesive tape was then stacked on the back of the PMMA plate. Then, it was placed on the Medipore (trade name) and pressed sufficiently with fingers. After a few minutes, the PMMA plate, adhesive tape and Medipore (trade name) were removed according to the corresponding procedures. Finally, the number of broken grids was counted. Hereinafter, the test methods of the examples and comparative examples are described. Example

[0083] In Examples 1 to 9, any one of the above-mentioned "SRT-1", "SRT-2", "SRT-3" and Command tab (trade name, manufactured by 3M Company) is used as the stretch-release adhesive tape corresponding to the adhesive sheet unit. As the structure of the adhesive sheet unit, any one of "SR-1" shown in FIG. 5, "SR-2" shown in FIG. 7, "SR-3" shown in FIG. 8, "SR-4" shown in FIG. 9, "SR-5" shown in FIG. 10, "SR-6" shown in FIG. 11, and "SR-7" shown in FIG. 12 is used. The adhesive tapes used in Examples 1 to 9 and the structures are shown in Fig.17 In Examples 1 to 9, each adhesive tape was stretched in a prescribed direction (refer to FIG. 5 and FIG. 7 to FIG. 12) and peeled off from Medipore (trade name) together with the PMMA plate. Medipore (trade name) was then slowly peeled off from the cardboard test substrate while being folded back in a 180° direction. In Example 10, NSBF was applied to the cardboard test substrate and dried, "SRT-1" of "SR-1" was attached thereto, and a PMMA plate was further attached thereto and pressure-bonded. Then, "SRT-1" was removed by stretching and peeling, and damage to the cardboard test substrate was confirmed. Comparative Example

[0084] In Comparative Examples 1 and 2, adhesive tape #9889 was attached to the protective tape, and a PMMA plate was attached to the adhesive tape. In Comparative Example 1, the protective layer tape was peeled off from the cardboard test substrate together with the PMMA plate and the adhesive tape. In Comparative Example 2, the PMMA plate was peeled off from Medipore (trade name) together with the adhesive tape, and then the Medipore (trade name) was slowly peeled off from the cardboard test substrate while being folded in a 180° direction. In Comparative Example 3, "SRT-1" as an adhesive tape was attached, and the PMMA plate was attached to the adhesive tape. In Comparative Example 3, the PMMA plate was peeled off from Medipore (trade name) without stretching and peeling SRT-1, and then the Medipore (trade name) was slowly peeled off from the cardboard test substrate while being folded in a 180° direction.

[0085] exist Fig.17 The test results are shown in the item of the damage grid. In Comparative Example 1, a known removal method was assumed, and it was estimated that the skin was greatly damaged by removing the tape integrated with the article. In Comparative Examples 2 and 3, a part of the method of the present patent was adopted, and the protective layer tape was peeled off after removing the article. However, it was confirmed that the removal of the article was not performed by stretch-peeling but by forced pulling, so there was a risk of damaging the skin by the protective layer tape. On the other hand, in all of Examples 1 to 10, it was confirmed that the damage could be reduced compared with the comparative example. Static shear test

[0086] Reference Fig.18 The holding force test using Protein Leather (trade name) PBZ13001 KAKI (IDEATEX Japan Co., Ltd.) is described. A sample tape having a size of 25 mm × 75 mm was prepared, leaving a 25 mm × 25 mm adhesive area at the tip, and a 25µm thick polyester (PET) film was laminated to an area of ​​25 mm × 50 mm to prevent tensile peeling of the tape sample. Protein Leather (trade name) having a size of 30 mm × 125 mm was prepared as a test substrate. The PET film-stacked tape sample was stacked on the end of the Protein Leather (trade name), and the stacked sample was prepared by pressing with a 2 kg roller.

[0087] Protein Leather (trade name) is made of protein powder and special resin. Protein Leather (trade name) has the skin of people who like excellent texture, and is used by many cosmetic manufacturers for cosmetic testing applications. The surface layer is made of polyurethane material and protein powder, and has the same moisture absorption and release properties as natural materials.

[0088] Next, the stacked samples were subjected to a retention test using a 145-DP RETENTIVITY TESTER (YASUDA SEIKISEISAKUSHO, LTD.). The stacked samples were kept in a test environment of 30°C and 75% RH for 1 hour without a weight load, and then a weight of 300 g was loaded on each sample, and the holding time until the tape material fell off was measured. The measurement results are shown in Fig.18 middle. Tensile strength test

[0089] Reference Fig.19 The tensile strength test is described. Here, the sample size is 25 mm wide × 100 mm or more. The distance between the chucks is set to 50 mm, the tensile test is performed at a speed of 50 mm / min, and the tensile strength at the 5% tensile point (2.5 mm) is measured. When the tensile strength is high, the stress applied to the skin increases, which may cause skin problems. The test results are shown in Fig.19 Here, the condition of less than 100N / 25mm is a favorable condition. Aspect 1

[0090] A product fixing device for fixing a product on an adherend, the product fixing device comprising: a protective layer configured to be formed on the adherend, the protective layer comprising a first main surface facing the adherend and a second main surface opposite to the adherend; and an adhesive sheet unit configured to be bonded to the second main surface of the protective layer, wherein the adhesive sheet unit comprises a first adhesive layer configured to be bonded to the second main surface, and the adhesive sheet unit is formed to be able to be stretched in at least two directions when the product is attached. Aspect 2

[0091] The article securing device according to aspect 1, wherein the adhesive sheet unit includes a plurality of tab portions that do not adhere to at least one of the protective layer and the article when the article is attached. Aspect 3

[0092] According to aspect 2, the article fixing device, wherein at least two of the plurality of tab portions are formed at positions facing each other, and the attachment position of the article is interposed between the at least two of the plurality of tab portions in the adhesive sheet unit. Aspect 4

[0093] The article securing device of any one of aspects 1 to 3, wherein the protective layer comprises a protective substrate having the second major surface and a second adhesive layer formed on the first major surface. Aspect 5

[0094] The article securing device according to aspect 4, wherein the second adhesive layer of the protective layer has a holding force on protein leather for 50 minutes or longer under conditions of 30° C., 75% RH and a load of 300 g. Aspect 6

[0095] The article securing device according to any one of aspects 1 to 5, wherein a hole is formed in each of the adhesive sheet unit and the protective layer, and the hole of the protective layer is smaller than the hole of the adhesive sheet unit. Aspect 7

[0096] The article securing device according to any one of aspects 1 to 6, wherein the protective substrate of the protective layer has a tensile strength of less than 100 N / 25 mm. Aspect 8

[0097] The article securing device according to any one of aspects 1 to 7, wherein the protective layer is formed as a layer by applying a protective liquid to the adherend. Aspect 9

[0098] A method for removing an article secured by the article securing device according to any one of aspects 1 to 8, the method comprising separating the adhesive sheet unit from the protective layer by stretching the adhesive sheet unit in at least two directions, leaving the protective layer on the adherend. Aspect 10

[0099] An adhesive sheet unit is disposed between the article and a protective layer formed on the adherend when the article is fixed on the adherend, the adhesive sheet unit comprising a first adhesive layer bonded to the protective layer, wherein the adhesive sheet unit is formed to be able to stretch in at least two directions when the article is attached.

Claims

1. A product fixing device for fixing a product on an adherend, the product fixing device comprising: A protective layer configured to be formed on the adherend, the protective layer comprising a first major surface, the first major surface facing the adherend, and a second major surface, the second major surface being opposite to the adherend; as well as an adhesive sheet unit configured to be bonded to the second major surface of the protective layer, wherein the adhesive sheet unit includes a first adhesive layer configured to be bonded to the second major surface, and The adhesive sheet unit is formed to be stretchable in at least two directions when the article is attached. 2 . The article securing device according to claim 1 , wherein the adhesive sheet unit includes a plurality of tab portions that are not bonded to at least one of the protective layer and the article when the article is attached.

3. The article fixing device according to claim 2, wherein at least two of the plurality of tab portions are formed at positions facing each other, and the attachment position of the article is between the at least two of the plurality of tab portions in the adhesive sheet unit.

4. The article fixing device according to any one of claims 1 to 3, wherein the protective layer comprises: a protective substrate comprising the second major surface, and A second adhesive layer is formed on the first major surface. 5 . The article securing device according to claim 4 , wherein the second adhesive layer of the protective layer has a holding force on protein leather for 50 minutes or more under the conditions of 30° C., 75% RH and a load of 300 g.

6. The article fixing device according to any one of claims 1 to 3, wherein forming a hole in each of the adhesive sheet unit and the protective layer, and The pores of the protective layer are smaller than the pores of the adhesive sheet unit.

7. The article securing device according to any one of claims 1 to 3, wherein the protective substrate of the protective layer has a tensile strength of less than 100 N / 25 mm.

8. The article fixing device according to any one of claims 1 to 3, wherein the protective layer is formed as a layer by applying a protective liquid to the adherend.

9. A method for removing an article secured by the article securing device according to any one of claims 1 to 3, the method comprising: The adhesive sheet unit is separated from the protective layer by stretching the adhesive sheet unit in at least two directions, leaving the protective layer on the adherend.

10. An adhesive sheet unit, the adhesive sheet unit being disposed between the product and a protective layer formed on the adherend when the product is fixed to the adherend, the adhesive sheet unit comprising: a first adhesive layer, the first adhesive layer being bonded to the protective layer, wherein the adhesive sheet unit is formed to be stretchable in at least two directions when the article is attached.

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