KR102640512B1 - Patch with adhesive layer and method of manufacturing the same - Google Patents

Abstract

It includes a base layer, a cushion layer disposed on the base layer, a dot structure disposed on the cushion layer, and an adhesive layer disposed on the cushion layer on which the dot structure is disposed and covering the dot structure.

Description

Patch including adhesive layer and method of manufacturing the same {Patch with adhesive layer and method of manufacturing the same}

The present invention relates to a patch including an adhesive layer and a method of manufacturing the patch including an adhesive layer. More specifically, the present invention relates to a patch including an adhesive layer so that it can be attached/detached to the skin, shoes, etc., and has an acupressure effect on the adhesive attachment surface. It relates to a patch that can provide the like and a method of manufacturing the patch.

Adhesive films have a variety of uses for holding, protecting, sealing or masking objects. This adhesive film is manufactured in the form of a patch and can be used to express a specific function on the skin or on props used in daily life. It has a thin thickness, excellent adhesive strength, excellent elongation so that it can be adhered to curved surfaces, and includes a shock absorption function, etc. There has been a request for the development of a patch.

Meanwhile, acupressure patches attached to the skin, etc. are being developed to apply acupressure to the attachment surface using an acupressure member and at the same time add various functions, such as a heating function through a heating member or a chemical solution injection function using a chemical impregnated layer. For example, in the case of a conventional thermal patch, an acupressure member with a hemispherical protrusion is stacked on an adhesive member so that it can be attached to the skin surface of the human body, and the adhesive member is formed to be wider than the area of the acupressure member, and the adhesive member is formed to be larger than the area of the acupressure member. By attaching the wing portion of the member to the skin surface, it exerts an acupressure effect or a warming effect.

However, since these conventional patches attach a separate member for a specific function to the film forming the adhesive member and then attach the wings of the film forming the adhesive member to the surface of the skin, the adhesive strength of the acupressure portion is poor. Additionally, there was a problem in that the patch itself was not easy to attach to curved surfaces of the skin or narrow areas where it was difficult to apply the wings.

Republic of Korea Patent Publication No. 10-2312099

Accordingly, the technical problem of the present invention was conceived from this point, and the purpose of the present invention is to provide a patch including an adhesive layer with a small thickness, excellent adhesive strength, excellent elongation, and a shock absorbing function.

Another object of the present invention is to provide a method for manufacturing the patch.

A patch according to an embodiment for realizing the object of the present invention described above includes a base layer, a cushion layer disposed on the base layer, a dot structure disposed on the cushion layer, and the cushion layer on which the dot structure is disposed. It includes an adhesive layer disposed on the dot structure and covering the dot structure.

In one embodiment of the present invention, the dot structure may have any one of the shapes of a cone, a sphere, a buckyball, a cylinder, and a half circle.

In one embodiment of the present invention, the size of each dot structure may be 1 mm to 10 mm based on the longest radius, and the distance between the adjacent dot structures may be 0.2 cm to 2 cm.

In one embodiment of the present invention, the dot structure may include silica gel.

In one embodiment of the present invention, the cushion layer includes a foaming agent composition and may have one or more of the following characteristics (i) or (ii).

(i) an expansion rate of 140% to 200%,

(ii) a porosity of 40% to 74%;

The expansion rate (RE) satisfies Equation 1 below,

<Equation 1>

(Where, R _E : foaming rate, T _f : thickness of cushion layer after foaming, T ₀ : thickness of cushion layer before foaming)

A patch characterized in that the porosity (ϕ) satisfies Equation 2 below.

<Equation 2>

(Where, ϕ: porosity, V: total volume of cushion layer, Vv: volume of pores, Vs: volume of solid outside the pores)

In one embodiment of the present invention, the first base layer may include thermoplastic polyurethane (TPU). The cushion layer may include a foaming agent having a particle size of 6 to 11 μm and a foaming agent having a particle size of 4 to 5 μm. The adhesive layer may include any one or more of a polyvinyl alcohol-based adhesive, an acrylic-based adhesive, and an epoxy-based adhesive.

A patch according to an embodiment for realizing the object of the present invention described above includes a first adhesive layer, a base layer disposed on the first adhesive layer, a cushion layer disposed on the base layer, and a first adhesive layer disposed on the cushion layer. a dot structure, a second adhesive layer disposed on the cushion layer on which the dot structure is disposed and covering the dot structure, and a cover layer disposed on the second adhesive layer.

A method of manufacturing a patch according to an embodiment for realizing the object of the present invention described above includes the steps of applying a foaming agent composition on a base layer and foaming it to form a cushion layer, and applying an adhesive composition on the first release layer. forming an adhesive layer, forming a dot structure on the second release layer, laminating the adhesive layer with the surface of the second release layer on which the dot layer is formed, forming the second release layer, the dot structure, A first lamination step of forming a structure in which the adhesive layer and the first release layer are sequentially stacked, and removing the second release layer from the adhesive layer and the dot structure, and applying the adhesive layer and the dot structure to the adhesive layer and the dot structure. It includes a second lamination step of laminating the cushion layers to form a structure in which the base layer, the cushion layer, the dot structure, the adhesive layer, and the first release layer are sequentially stacked.

In one embodiment of the present invention, the dot structure may have any one of the shapes of a cone, a sphere, a buckyball, a cylinder, and a half circle.

In one embodiment of the present invention, the size of each dot structure may be 1 mm to 10 mm based on the longest radius, and the distance between the adjacent dot structures may be 0.2 cm to 2 cm.

In one embodiment of the present invention, the dot structure may include silica gel.

In one embodiment of the present invention, the cushion layer may have one or more of the following characteristics (i) or (ii).

(i) an expansion rate of 140% to 200%,

(ii) a porosity of 40% to 74%;

The expansion rate (RE) satisfies Equation 1 below,

<Equation 1>

(Where, R _E : foaming rate, T _f : thickness of cushion layer after foaming, T ₀ : thickness of cushion layer before foaming)

A patch manufacturing method, characterized in that the porosity (ϕ) satisfies Equation 2 below.

<Equation 2>

(Where, ϕ: porosity, V: total volume of cushion layer, Vv: volume of pores, Vs: volume of solid outside the pores)

In one embodiment of the present invention, the first base layer may include thermoplastic polyurethane (TPU). The cushion layer may include a foaming agent having a particle size of 6 to 11 μm and a foaming agent having a particle size of 4 to 5 μm. The adhesive layer is a polyvinyl alcohol-based adhesive; Acrylic adhesive; It may include any one or more of epoxy-based adhesives.

According to embodiments of the present invention, the patch includes a base layer, a cushion layer disposed on the base layer, a dot structure disposed on the cushion layer, and a dot structure disposed on the cushion layer disposed on the dot structure. It includes an adhesive layer covering the structure. Since the patch can be attached directly to the skin that needs acupressure, an acupressure effect, sufficient adhesive strength and additional cushioning effect can be expected.

Therefore, according to this embodiment, it is possible to provide a patch that has excellent adhesion, includes a cushion layer, is not easily separated by external impact, and has excellent wearing comfort. In particular, it can be directly attached to the acupressure area, providing excellent acupressure effect. do. In addition, a method for manufacturing the patch can be provided to easily manufacture the patch.

However, the effects of the present invention are not limited to the above effects, and may be expanded in various ways without departing from the spirit and scope of the present invention.

1 is a cross-sectional view of a patch according to an embodiment of the present invention.
Figure 2 is a cross-sectional view of a patch according to another embodiment of the present invention.
Figure 3 is a flowchart showing a method of manufacturing a patch according to an embodiment of the present invention.
Figure 4 is a cross-sectional view for explaining the manufacturing method of the patch of Figure 3.
Figure 5 is a diagram showing application examples of patches according to embodiments of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the drawings.

Since the present invention can be subject to various changes and have various forms, specific embodiments will be illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to a specific disclosed form, and should be understood to include all changes, equivalents, and substitutes included in the spirit and technical scope of the present invention.

1 is a cross-sectional view of a patch according to an embodiment of the present invention.

Referring to FIG. 1, the patch may include a base layer 100, a cushion layer 200, a dot structure (DT), an adhesive layer 300, and a release layer 400.

The base layer 100 can absorb additional external shocks other than the cushion layer 200 by using a thermoplastic polyurethane (TPU) film. The base layer 100 can be selectively used by a person skilled in the art. For example, the base layer 100 is made of polyethylene terephthalate (PET) film, polycyclohexylene dimethylphthalate (PCT) film, polyethylene naphthalate (PEN) film, polyimide (PI) film, and polypropylene (OPP). Film, thermoplastic polyurethane (TPU) film, unstretched polypropylene (CPP) film, polyether sulfone (PES) film, polyetherimide (PEI) film, polyphenylene sulfide (PPS) film, polyvinyl chloride (PCV) Film and polycarbonate (PC) film can be used, but are not limited thereto.

The cushion layer 200 may be disposed on the base layer 100. The cushion layer 200 may include a foaming agent composition. The foaming agent used can be selected by those skilled in the art taking into account the form of the foam to be formed, vapor pressure, ease of use, and/or solubility with respect to the polymer used.

The cushion layer 200 can be manufactured using a physical foaming agent or a chemical foaming agent. When gas is used as the foaming agent, it is called a physical foaming agent, and when a material that decomposes chemically is used, it is called a chemical foaming agent. If necessary, a nucleating agent can be added to the dissolved foaming agent to increase the pore size and form the pores uniformly.

In one embodiment of the present invention, the physical blowing agent includes a volatile liquid dissolved in a liquid solvent, such as butane, pentane, neopentane, heptane, isoheptane, benzene, toluene, methyl chloride, and trichlorethylene. , dichlorethane, methylene chloride, trichlorofluoromethane, or a combination thereof may be used, but is not limited thereto. Chemical foaming agents cause bubbles to be formed through chemical reactions, for example, azo compounds such as azodicarbonamide or activated azodicarbonamide; It may be 5-phenyltetrazole or sodium bicarbonate, but is not limited thereto.

The physical foaming agent may be formulated, for example, in encapsulated form as a sphere surrounded by thermosetting resin. The thermosetting resin may include, for example, a polyolefin-based resin, a styrene-based resin, a thermosetting polyurethane resin, or a combination thereof, and more specifically, a mixture of sodium bicarbonate and citric acid, dinitrosopentamethylenetetramine. , p-toluenesulfonyl hydrazide, 4-4'-oxybis (benzenesulfonyl hydrazide, azodicarbonamide (1,1'-azobisformamide), p-toluenesulfonyl semicarbazide, 5'-phenyltetrazole, 5'-phenyltetrazole analogue, diisopropylhydrazodicarboxylate, 5'-phenyl-3,6-dihydro-1,3,4-oxadiazin-2-one, or sodium borohydride, or a combination thereof, but is not limited thereto.

The blowing agent is present in the blowing agent composition in the form of particles or beads. The particle size of the particles or beads may be one type, or a mixture of at least two types may be used. In one embodiment of the invention, the particle size is from about 1 μm to about 15 μm, from about 2 μm to about 14 μm, from about 3 μm to about 13 μm, from about 4 μm to about 12 μm, or from about 4 μm to about 4 μm. It is 11 μm. In one embodiment of the present invention, a composition comprising a blowing agent having a particle size of about 4 μm to about 5 μm and about 6 μm to about 11 μm, respectively, is used.

As a material forming the framework of the cushion layer 200, various thermoplastic polymers may be used, for example, polystyrene, polypropylene, polyethylene, polyester, and fluoropolymer, more specifically, styrene-isoprine-styrene. (SIS), styrene-ethylene/butylene/styrene block copolymer (SEBS), and acrylic copolymers, such as polystyrene, or copolymers thereof, and impact-resistant polystyrene. Same styrene resin; polycarbonate; poly(meth)acrylic compounds such as poly(methyl methacrylate) (PMMA); elastomer; polybutadiene; polyisoprine; polychloroprine; caoutchouc; random and block copolymers of styrene and diene, such as styrene-butadiene rubber (SRB); olefin resins such as polyethylene, polypropylene, ethylene-propylene copolymer, ethylene-vinyl acetate copolymer, and ethylene-propylene-diene monomer rubber; amorphous polyolefin; vinyl acetate resin; polyester resins such as poly(ethylene tetraphthalate) (PET), poly(ethylene naphthalate) (PEN), and poly(butylene terephthalate); and amorphous polyester; polystyrene-polyethylene copolymer; polyvinylcyclohexane; polyacrylonitrile; vinyl chloride resins such as polyvinyl chloride; Urethane resins including thermoplastic polyurethane; oriented epoxy; polyamides such as polyamide (nylon), wholly aromatic polyamide (aramid), and amorphous polyamide; polyetherimide; poly(ether ketone) (PEEK); Acrylonitrile-butadiene-styrene (ABS) copolymer; fluorinated elastomers; amorphous fluoropolymer; polydimethyl siloxane; poly(phenylene sulfide); polyphenylene oxide; polyphenylene oxide mixtures such as polyphenylene oxide-polystyrene; copolymers containing one or more amorphous components; Or a combination thereof may be used. In one embodiment of the present invention, a urethane resin containing polyurethane with a molecular weight of 100,000 to 150,000, a polyethylene copolymer with a molecular weight of 100,000 to 300,000, or a combination thereof is used.

In addition to foam and thermoplastic polymer, the cushion layer 200 may further include a silane coupling agent, antioxidant, curing retardant, catalyst, colorant, labeling agent, and/or solvent.

Silane coupling agent generally refers to a compound having the formula:

YR-Si-(X)3

Wherein

Silane coupling agents include, but are not limited to, vinylbenzyl cationic silane, gamma-glycidoxypropyltrimethoxysilane, gamma-mercaptopropyltrimethoxysilane, and beta-mercaptoethyltriethoxysilane. Silane, gamma-chloropropyltrimethoxysilane, n-beta-(aminoethyl) gamma-aminopropyl-trimethoxysilane, gamma-aminopropyltriethoxysilane, vinyltriethoxysilane, vinyl-tris (beta- methoxy-ethoxy)silane, gamma-methacryloxypropyltrimethoxysilane, beta-(3,4 epoxycyclohexyl)ethyltrimethoxysilane, gamma-glycidoxypropyltrimethoxysilane, and/or Vinyltriacetoxysilane may be used.

Antioxidants are ingredients that allow the manufactured film to have improved properties such as improved heat resistance and light resistance, and phenol-based antioxidants or amine-based antioxidants may be used. Phenolic antioxidants include, but are not limited to, IRGANOX 1330, IRGANOX 259, IRGANOX 3114, IRGANOX 565 and CHIBASSORB 119FL sold by BASF; and ADEKASTAB AO-60 sold by Adeka. As amine-based antioxidants, for example, CHIMASSORB 2020FDL, CHIMASSORB 944FDL and CHIMASSORB 119FL sold by BASF can be used.

Cure retarders are used to slow the curing of films, e.g. 4-methoxyphenol, 4-ethoxyphenol, 3-t-butyl-4-hydroxyanisole, 2-t-butyl-4- alkoxyphenols such as hydroxyanisole, and 3,5-di-t-butyl-4-hydroxyanisole; 2-methylhydroquinone, 2,5-dimethylhydroquinone, 2-t-butylhydroquinone, 2,5-di-t-butylhydroquinone, 2,5-di-t-amylhydroquinone, 2,5- Bis(1,1-dimethylbutyl)hydroquinone, and 2,5-bis(1,1-dimethylbutyl)hydroquinone, and 2,5-bis(1,1,3,3-tetramethylbutyl)hydroquinone hydroquinones such as paddy rice; Catechols such as catechol, 4-t-butylcatechol and 3,5-di-t-butylcatechol; and benzoquinones such as benzoquinone, naphthoquinone, and methylbenzoquinone, but are not limited to these.

In one embodiment of the present invention, the catalyst may be an acid catalyst, a salt catalyst, or a mixture thereof. Catalysts include, for example, KOH, NaOH, LiOH, organolithium reagent, Grignard reagent, methanesulfonic acid, sulfonic acid, p-toluenesulfonic acid, or mixtures thereof; Amines such as triethylamine, pyridine, and tributylamine; imidazoles such as methylimidazole and phenylimidazole; Phosphorus-based catalysts such as triphenylphosphine; It may be an organic metal salt of a metal such as tin, titanium, aluminum, bismuth, platinum, rhodium, or palladium.

In the specification of the present invention, “foaming rate” means the percentage of the thickness of the cushion layer 200 after foaming relative to the thickness of the cushion layer before foaming.

_{<Equation 1>}

(Where, R _E : foaming rate, T _f : thickness of cushion layer after foaming, T ₀ : thickness of cushion layer before foaming)

The foaming rate can be adjusted by a person skilled in the art depending on the temperature and foaming time at the time of foaming. In one embodiment of the present invention, the expansion rate of the cushion layer in the adhesive film is about 120% to about 200%, in another embodiment of the present invention, about 140% to about 200%, and in another embodiment of the present invention, about 160%. to about 200%, and in another embodiment of the present invention, from about 180% to about 200%. If the expansion rate is less than 120%, the shock absorbing properties cannot be achieved at the desired level, and if the expansion rate exceeds 200%, the strength of the cushion layer decreases, causing a problem that the cushion layer may break. .

Porosity along with the expansion rate of the cushion layer 200 are also factors that can increase impact strength. Porosity is a value representing the density of the gas contained in the foam sheet or the gas occupancy rate of the sheet, and refers to the volume occupied by the pores relative to the volume of the entire cushion layer:

_{<Equation 2>}

ϕ: porosity

(Where, ϕ: porosity, V: total volume of cushion layer, Vv: volume of pores, Vs: volume of solid outside the pores)

In one embodiment of the present invention, the porosity of the cushion layer is 40% to 80%, in another embodiment of the present invention, the porosity is 40% to 74%, and in another embodiment of the present invention, the porosity is 50% to 74%. %am. If the porosity of the cushion layer is less than 40%, the desired degree of shock absorption cannot be achieved, and if the porosity of the cushion layer exceeds 80%, the desired degree of film strength is not achieved.

The dot structure DT may be disposed on the cushion layer 200. A plurality of dot structures DT may be appropriately disposed on the cushion layer 200 as needed. Each of the dot structures DT may have a shape such as a cone, a sphere, a buckyball, a cylinder, or a half circle.

For example, the size of each dot structure may be 1 mm (millimeter) to 10 mm based on the longest radius, and the spacing between the adjacent dot structures may be 0.2 cm (cm) to 2 cm. The size and spacing of the dot structures can be appropriately selected according to need. The dot structure (DT) may include silica gel.

The adhesive layer 300 is a polyvinyl alcohol-based adhesive; Acrylic adhesive; Epoxy-based adhesive; Vinyl acetate adhesive; Urethane-based adhesive; polyester adhesive; polyolefin adhesive; polyvinyl alkyl ether adhesive; rubber-based adhesive; Vinyl chloride-vinylacetate adhesive; Styrene-butadiene-styrene (SBS) adhesive; Styrene-butadiene-styrene hydrogenated (SEBS) adhesive; Ethylene-based adhesive; It may include, but is not limited to, an adhesive selected from the group consisting of silicone-based adhesives and acrylic acid ester-based adhesives. In another embodiment of the present invention, the adhesive layer 300 may include one or more adhesives selected from the group consisting of acrylic adhesives, epoxy adhesives, and silicone adhesives.

In one embodiment of the present invention, the acrylic adhesive includes at least one acrylic polymer, and the acrylic polymer has a polymerization unit derived from a (meth)acrylic acid ester compound such as, for example, an alkyl (meth)acrylate. It may include, but is not limited to this. In another embodiment of the invention, the acrylic polymer is methyl (meth)acrylate, ethyl (meth)acrylate, n-propyl (meth)acrylate, isopropyl (meth)acrylate, n-butyl (meth)acrylate. , t-butyl (meth)acrylate, sec-butyl (meth)acrylate, pentyl (meth)acrylate, 2-ethylhexyl (meth)acrylate, 2-ethylbutyl (meth)acrylate, n-octyl ( It may be meth)acrylate, isooctyl (meth)acrylate, isononyl (meth)acrylate, lauryl (meth)acrylate, tetradecyl (meth)acrylate, or a combination thereof.

In one embodiment of the present invention, the epoxy-based adhesive includes at least one epoxy compound, and the epoxy compound includes one or more epoxy groups. In particular, compounds with multiple epoxy groups are called polyepoxides, and polyepoxides are compounds containing epoxy groups at the terminals, such as the diglycidyl ether of polyoxyalkylene glycol, and have a skeleton such as polybutadiene polyepoxide. polymers having internal oxirane units, and polymers having epoxy moieties, such as glycidyl methacrylate polymers or copolymers. In one embodiment of the present invention, the epoxy compound may be a saturated or unsaturated, aliphatic, cycloaliphatic, aromatic, or heterocyclic compound, may be substituted or unsubstituted, and may be a monomer or polymer.

Epoxy compounds are commercially available, such as octadecylene oxide, epichlorohydrin, styrene oxide, vinylcyclohexene oxide, glycidol, glycidyl methacrylate, diglycidyl ether of bisphenol A. , diglycidyl ether of cisphenol F, vinylcyclohexane dioxide, 3,4-epoxycyclohexylmethyl-3,4-epoxycyclohegen carboxylate, 2-(3,4-epoxycyclohexyl-5,5 -spiro-3,4-epoxy)cyclohexane-metadioxane, bis(3,4-epoxycyclohexyl adipate, dipentene dioxide, epoxidized polybutadiene, beta-3,4-epoxycyclohexylethyltri Epoxy silanes such as methoxy silane and gamma-glycidoxypropyltrimethoxy silane, flame retardant epoxy resins, 1,4-butanediol diglycidyl ether, hydrogenated bisphenol A-epichlorohydrin based epoxy resins, and It may be a polyglycidyl ether of phenol-formaldehyde Novolak.

The adhesive used in one embodiment of the present invention is a pressure sensitive adhesive (PSA), and is a polymer having a molecular weight of about 700,000 to about 800,000 and a glass transition temperature (Tg) of about -25°C to about -20°C. used.

In one embodiment of the present invention, the solvent used in the adhesive layer 300 is n-methylpyrrolidone (NMP), dimethyl sulfoxide (DMSO), ethyl lactate, ethyl acetate, butyl acetate, and methyl ethyl ketone (MEK). ), propylene glycol ethylene acetate (PGMEA), toluene, xylene, acetone, cyclopentenone, tetrahydrofuran (THF), dimethyl acetamide, hydrocarbon, cyclohexanone, or ether, but is not limited thereto, Any solution that can maintain the components in the solution in a stable homogeneous or dispersed state for the desired time can be used.

The release layer 400 may be disposed on the adhesive layer 300. The release layer 400 may be formed by coating on the adhesive layer 300. The release layer 400 protects the adhesive layer 300 from external physical/chemical stimuli and facilitates movement and work. The release layer 400 may be a film manufactured using polyethylene terephthalate, polyethylene naphthalate, polypropylene terephthalate, polybutylene terephthalate, polypropylene naphthalate, or a combination thereof.

Figure 2 is a cross-sectional view of a patch according to another embodiment of the present invention.

Referring to Figure 2, the patch includes a release layer 400, a first adhesive layer 350, a base layer 100, a cushion layer 200, a dot structure (DT), a second adhesive layer 300, and It may include a cover layer 310. The patch is substantially the same as the patch in FIG. 1 except for the stacking order of each layer and the cover layer. Therefore, repetitive explanations are omitted or simplified.

The release layer 400 is disposed below the first adhesive layer 350. The release layer 400 may be formed by coating on the first adhesive layer 350. The release layer 400 protects the first adhesive layer 350 from external physical/chemical stimuli and facilitates movement and work.

The first adhesive layer 350 may be disposed on the release layer 400. The first adhesive layer 350 may include an adhesive.

The base layer 100 may be disposed on the first adhesive layer 350. The base layer 100 can absorb additional external shocks other than the cushion layer 200. The base layer 100 can be selectively used by a person skilled in the art.

The cushion layer 200 may be disposed on the base layer 100. The cushion layer 200 may include a foaming agent composition.

The dot structure DT may be disposed on the cushion layer 200. A plurality of dot structures DT may be appropriately disposed on the cushion layer 200 as needed.

The second adhesive layer 300 may be disposed on the dot structure DT and the cushion layer 200. The second adhesive layer 300 may include an adhesive.

The cover layer 310 may be disposed on the second adhesive layer 300. The cover layer 310 is formed of a sufficiently thin and elastic material so that the bending caused by the dot layer DT can act on the application surface of the human body through the second adhesive layer 300 and the cover layer 310. You can. The cover layer 310 may be selected from an appropriate material and may serve to cover the second adhesive layer 300 to prevent the second adhesive layer 300 from adhering to the application surface.

Figure 3 is a flowchart showing a method of manufacturing a patch according to an embodiment of the present invention. Figure 4 is a cross-sectional view for explaining the manufacturing method of the patch of Figure 3.

Referring to Figures 3 and 4, the method of manufacturing the patch includes forming a cushion layer (S110), forming an adhesive layer (S120), forming a dot structure (S130), and a first lamination step (S140). ) and a second lamination step (S150).

In the step of forming the cushion layer (S110), the foaming agent composition may be applied on the base layer 100 and foamed to form the cushion layer 300. (See Figure 4(a))

One surface of the base layer 100 may be subjected to primer surface treatment or corona surface treatment to strengthen the bonding strength between the cushion layer 300 and the base layer 100. For example, a composition containing a foaming agent may be coated on one side of the surface-treated base layer 100 and aged to form the cushion layer 200.

In the step of forming the adhesive layer (S120), the adhesive layer 200 may be formed by applying an adhesive composition on the first release layer 400. For example, a layer obtained by applying the adhesive composition to one surface of the first release layer 400 and then curing it through heating and drying, or by applying the adhesive to a separate support and then curing it through heating and drying. It can be manufactured by placing it on the surface of the cushion layer.

In the step of forming the dot structure (S130), the dot structure DT may be formed on the second release layer 110. A plurality of the dot structures DT may be appropriately disposed on the second release layer 110 as needed, and each dot structure DT may be formed into a triangular pyramid, a sphere, or a buckyball ( It can have shapes such as buckyball, cylinder, and half circle. The dot structure (DT) may include silica gel. The dot structure DT may be formed by printing on the second release layer 110 using an inkjet method, or may be formed by appropriately placing a pre-manufactured dot structure on the second release layer 110. .

In the first lamination step (S140), the surface of the second release layer 110 on which the dot structure DT is formed and the adhesive layer 300 are laminated to form the second release layer 110 and the dots. A structure in which the structure DT, the adhesive layer 300, and the first release layer 400 are sequentially stacked may be formed.

In the second lamination step (S150), the second release layer 110 is removed from the adhesive layer 300 and the dot structure (DT), and the second release layer 110 is removed from the adhesive layer 300 and the dot structure (DT). By laminating the cushion layer 200, the base layer 100, the cushion layer 200, the dot structure (DT), the adhesive layer 300, and the first release layer 400 are sequentially stacked. structures can be formed.

Figure 5 is a diagram showing application examples of patches according to embodiments of the present invention.

Referring to (a) of FIG. 5, a case where the patch 10 of FIG. 1 is directly applied to the sole 2 of the human body is shown. In order to attach the patch 10 directly to the skin requiring acupressure, the release layer (see 400 in FIG. 1) of the patch 10 is removed, and then the adhesive layer (see 300 in FIG. 1) is directly applied to the skin (2). ) can be attached to. At this time, since the dot structure (see DT in FIG. 1) under the adhesive layer presses the skin through the adhesive layer, it can effectively provide pressure to the skin that needs an acupressure effect and provide sufficient adhesive force.

In addition, since the patch 2 has a structure in which the entire acupressure target surface is adhered, it can be effectively and firmly attached even to a small area, and the cushion layer of the patch 10 (see 200 in FIG. 1) provides additional shock resistance. An absorption effect can be expected.

Referring to (B) of FIG. 5, a case where the patch 10 of FIG. 2 is attached to the sole 4 of the shoe 6 is shown. An acupressure effect can be expected by attaching the patch 10 to a structure other than the skin of the human body in an area requiring acupressure. After removing the release paper (see 400 in FIG. 2) of the patch 10, the first adhesive layer (see 350 in FIG. 2) can be attached to the acupressure area of the sole 4.

Referring to Figure 5 (C), it shows a case where the patch 10 of Figure 1 is attached to the palm 8 or wrist of the human body, and referring to Figure 5 (D), the patch of Figure 1 It shows a case where (10) is attached to the waist portion (9) of the human body.

According to embodiments of the present invention, the patch includes a base layer, a cushion layer disposed on the base layer, a dot structure disposed on the cushion layer, and a dot structure disposed on the cushion layer disposed on the dot structure. It includes an adhesive layer covering the structure. Since the patch can be attached directly to the skin that needs acupressure, high acupressure effect, sufficient adhesive strength and additional cushioning effect can be expected. In addition, the patch has excellent adhesion and elongation, so it can be firmly attached directly to the curved surface of the human body.

Hereinafter, the present invention will be described through specific examples of an adhesive tape including a release film layer, an adhesive layer, a cushion layer, and a base layer. However, the following examples should not be construed as limiting the scope of the present invention.

Example

Manufacturing Example 1

On one side of the surface-treated base film with a thickness of 43 μm, polyurethane as the main material, about 0.8 parts by weight of a blowing agent with a particle size of 6 to 11 μm, 1.0 parts by weight of indigo ink, and 0.6 parts by weight per 100 parts by weight of the main material. A foaming agent composition containing a leveling agent, 0.6 part by weight of an inorganic coupling agent, 0.1 part by weight of a phenolic antioxidant, and 0.1 part by weight of an epoxy curing agent is applied, one dry zone is 4 m, and 50, 70, 80, 110, 150 parts by weight are applied. , 150, 155, and 150°C, and transported at a speed of 11.5 m/min in a heat dryer divided into 8 stages to form a foam layer with a thickness of 60 μm and a porosity of 40%. Afterwards, the adhesive composition was coated on one side of the base film and one side of the foam layer, and one drying zone was 4 m long, and heat was divided into a total of eight stages of 60, 70, 75, 100, 120, 140, 145, and 140°C. Dry in a dryer at a speed of 6 m/min to form first and second adhesive layers with a thickness of 120 μm and 127 μm, respectively, and apply first and second release film layers with a thickness of 50 μm and 75 μm, respectively. An adhesive tape with a thickness of 350 μm was prepared.

Production example 2

In Preparation Example 1, a foam layer with a thickness of 80 μm was formed by foaming while transporting at a speed of 10 m/min at the same drying temperature, and the first and second adhesive layers were transported at a speed of 7 m/min at the same drying temperature. It was prepared in the same manner as Preparation Example 1, except that it was dried and formed into thicknesses of 110 μm and 117 μm, respectively.

Production example 3

In Preparation Example 1, a foam layer with a thickness of 90 μm was formed by foaming while transporting at the same drying temperature at a speed of 9 m/min, and the first and second adhesive layers were transported at the same drying temperature at a speed of 8 m/min. It was prepared in the same manner as Preparation Example 1, except that it was dried and formed into thicknesses of 105 μm and 112 μm, respectively.

Production example 4

In Preparation Example 1, a foam layer with a thickness of 100 μm was formed by foaming while transporting at the same drying temperature at a speed of 8 m/min, and the first and second adhesive layers were transported at the same drying temperature at a speed of 9 m/min. It was prepared in the same manner as Preparation Example 1, except that it was dried and formed into thicknesses of 100 μm and 107 μm, respectively.

Production example 5

In Preparation Example 1, a foam layer with a thickness of 120 μm was formed by foaming while transporting at the same drying temperature at a speed of 7 m/min, and the first and second adhesive layers were transported at the same drying temperature at a speed of 7 m/min. It was prepared in the same manner as Preparation Example 1, except that it was dried and formed into thicknesses of 90 μm and 97 μm, respectively.

Production example 6

On one side of the surface-treated base film with a thickness of 43 μm, polyurethane as the main material, about 1.0 parts by weight of a blowing agent with a particle size of 6 to 11 μm, 1.0 parts by weight of indigo ink, and 0.6 parts by weight per 100 parts by weight of the main material. A foaming agent composition containing a leveling agent, 0.6 part by weight of an inorganic coupling agent, 0.1 part by weight of a phenolic antioxidant, and 0.1 part by weight of an epoxy curing agent is applied, one dry zone is 4 m, and 50, 70, 80, 110, 150, By transporting and foaming at a speed of 11.5 m/min in a heat dryer divided into a total of 8 stages at 150, 155, and 150°C, a foam layer with a porosity of 50% and a thickness of 60 μm was formed. Afterwards, the adhesive composition was coated on one side of the base film and one side of the foam layer, and one drying zone was 4 m long, and heat was divided into a total of eight stages of 60, 70, 75, 100, 120, 140, 145, and 140°C. It was transported and dried in a dryer at a speed of 6 m/min to form first and second adhesive layers with a thickness of 120 μm and 127 μm, respectively, and a release film layer with a thickness of 50 μm and 75 μm was applied to form an adhesive layer with a thickness of 350 μm. A tape was prepared.

At this time, the thickness of the cushion was measured according to ASTM D-3652.

Production example 7

In Preparation Example 6, a foam layer with a thickness of 80 μm was formed by foaming while transporting at the same drying temperature at a speed of 10 m/min, and the first and second adhesive layers were transported at the same drying temperature at a speed of 7 m/min. It was prepared in the same manner as Preparation Example 6, except that it was dried and formed into thicknesses of 110 μm and 117 μm, respectively.

Production example 8

In Preparation Example 6, a foam layer with a thickness of 80 μm was formed by foaming while transporting at the same drying temperature at a speed of 9 m/min, and the first and second adhesive layers were transported at the same drying temperature at a speed of 8 m/min. It was prepared in the same manner as Preparation Example 6, except that it was dried and formed into thicknesses of 110 μm and 117 μm, respectively.

Production example 9

In Preparation Example 6, a foam layer with a thickness of 80 μm was formed by foaming while transporting at the same drying temperature at a speed of 8 m/min, and the first and second adhesive layers were transported at the same drying temperature at a speed of 9 m/min. It was prepared in the same manner as Preparation Example 6, except that it was dried and formed into thicknesses of 110 μm and 117 μm, respectively.

Production example 10

In Preparation Example 6, a foam layer with a thickness of 80 μm was formed by transporting and foaming at the same drying temperature at a speed of 7 m/min, and the first and second adhesive layers were formed at the same drying temperature at a speed of 9.5 m/min. It was manufactured in the same manner as Preparation Example 6, except that it was transported and dried to form thicknesses of 110 μm and 117 μm, respectively.

Production example 11

On one side of the surface-treated base film with a thickness of 43 μm, polyurethane as the main material, about 1.2 parts by weight of a blowing agent with a particle size of 6 to 11 μm, 1.0 parts by weight of indigo ink, and 0.6 parts by weight per 100 parts by weight of the main material. A foaming agent composition containing a leveling agent, 0.6 parts by weight of an inorganic coupling agent, 0.1 part by weight of a phenolic antioxidant, and 0.1 part by weight of an epoxy curing agent is applied, one dry zone is 4 m, and 50, 70, 80, 110, 150, By transporting and foaming at a speed of 11.5 m/min in a heat dryer divided into a total of 8 stages at 150, 155, and 150°C, a foam layer with a 60% porosity and a thickness of 60 μm was formed. Afterwards, the adhesive composition is coated on one side of the base film and one side of the foam layer, and one drying zone is 4 m long and is divided into a total of 8 stages of 60, 70, 75, 100, 120, 140, 145, and 140°C. It was transported at a speed of 6 m/min and dried to form first and second adhesive layers with a thickness of 120 μm and 127 μm, respectively, and a release film layer with a thickness of 50 μm and 75 μm was applied to form an adhesive tape with a thickness of 350 μm. was manufactured.

Production example 12

In Preparation Example 11, a foam layer with a thickness of 80 μm was formed by foaming while transporting at a speed of 10 m/min at the same drying temperature, and the first and second adhesive layers were transported at a speed of 7 m/min at the same drying temperature. It was prepared in the same manner as Preparation Example 11, except that it was dried and formed into thicknesses of 110 μm and 117 μm, respectively.

Production Example 13

In Preparation Example 11, a foam layer with a thickness of 90 μm was formed by foaming while transporting at the same drying temperature at a speed of 9 m/min, and the first and second adhesive layers were transported at the same drying temperature at a speed of 8 m/min. It was prepared in the same manner as Preparation Example 11, except that it was dried and formed into thicknesses of 105 μm and 112 μm, respectively.

Production example 14

In Preparation Example 11, a foam layer with a thickness of 100 μm was formed by foaming while transporting at a speed of 8 m/min at the same drying temperature, and the first and second adhesive layers were transported at a speed of 9 m/min at the same drying temperature. It was prepared in the same manner as Preparation Example 11, except that it was dried and formed into thicknesses of 100 μm and 107 μm, respectively.

Production Example 15

In Preparation Example 11, a foam layer with a thickness of 120 μm was formed by transporting and foaming at the same drying temperature at a speed of 7 m/min, and the first and second adhesive layers were formed at the same drying temperature at a speed of 9.5 m/min. It was manufactured in the same manner as Preparation Example 11, except that it was transported and dried to form thicknesses of 90 μm and 97 μm, respectively.

Production example 16

On one side of the surface-treated base film with a thickness of 43 μm, polyurethane as the main material, about 1.4 parts by weight of a blowing agent with a particle size of 6 to 11 μm, 1.0 parts by weight of indigo ink, and 0.6 parts by weight per 100 parts by weight of the main material. A foaming agent composition containing a leveling agent, 0.6 part by weight of an inorganic coupling agent, 0.1 part by weight of a phenolic antioxidant, and 0.1 part by weight of an epoxy curing agent is applied, one dry zone is 4 m, and 50, 70, 80, 110, 150, By transporting and foaming at a speed of 9 m/min in a heat dryer divided into a total of 8 stages at 150, 155, and 150°C, a foam layer with a porosity of 68% and a thickness of 90 μm was formed. Afterwards, the adhesive composition is coated on one side of the base film and one side of the foam layer, and one drying zone is 4 m long and is divided into a total of 8 stages of 60, 70, 75, 100, 120, 140, 145, and 140°C. It was transported and dried at a speed of 8 m/min to form first and second adhesive layers with a thickness of 105 μm and 112 μm, respectively, and a release film layer with a thickness of 50 μm and 75 μm was applied to form an adhesive tape with a thickness of 350 μm. was manufactured.

Production Example 17

In Preparation Example 16, a foam layer with a thickness of 100 μm was formed by foaming while transporting at a speed of 8 m/min at the same drying temperature, and the first and second adhesive layers were transported at a speed of 9 m/min at the same drying temperature. It was prepared in the same manner as Preparation Example 16, except that it was dried and formed to a thickness of 100 μm and 107 μm, respectively.

Production Example 18

In Preparation Example 16, a foam layer with a thickness of 120 μm was formed by transporting and foaming at the same drying temperature at a speed of 7 m/min, and the first and second adhesive layers were formed at the same drying temperature at a speed of 9.5 m/min. It was prepared in the same manner as in Preparation Example 16, except that it was transported and dried to form thicknesses of 90 μm and 97 μm, respectively.

Production example 19

On one side of the surface-treated base film with a thickness of 43 μm, polyurethane as the main material, about 1.4 parts by weight of a blowing agent with a particle size of 6 to 11 μm, 1.0 parts by weight of indigo ink, and 0.6 parts by weight per 100 parts by weight of the main material. A foaming agent composition comprising a leveling agent, 0.6 parts by weight of an inorganic coupling agent, 0.5 parts by weight of a phenolic antioxidant, and 0.1 part by weight of an epoxy curing agent is applied, one dry zone is 4 m, and 50, 70, 80, 110, 150, By transporting and foaming at a speed of 9 m/min in a heat dryer divided into a total of 8 stages at 150, 155, and 150°C, a foam layer with a porosity of 74% and a thickness of 90 μm was formed. Afterwards, the adhesive composition is coated on one side of the base film and one side of the foam layer, and one drying zone is 4 m long and is divided into a total of 8 stages of 60, 70, 75, 100, 120, 140, 145, and 140°C. It was transported and dried at a speed of 8 m/min to form first and second adhesive layers with a thickness of 105 μm and 112 μm, respectively, and a release film layer with a thickness of 50 μm and 75 μm was applied to form an adhesive tape with a thickness of 350 μm. was manufactured.

Production example 20

In Preparation Example 19, a foam layer with a thickness of 100 μm was formed by transporting and foaming at the same drying temperature at a speed of 8 m/min, and the first and second adhesive layers were formed at the same drying temperature at a speed of 9.5 m/min. It was prepared in the same manner as Preparation Example 19, except that it was transported and dried to form thicknesses of 100 μm and 107 μm, respectively.

Production example 21

On one side of the surface-treated base film with a thickness of 43 μm, polyurethane is used as the main material, about 1.0 parts by weight of a foaming agent with a particle size of 6 to 11 μm and about 1.0 parts by weight of 4 to 5 μm beads are added to 100 parts by weight of the main material. , 1.0 part by weight of indigo ink, 0.6 part by weight of leveling agent, 0.6 part by weight of inorganic coupling agent, and 0.1 part by weight of phenolic antioxidant are applied, one dry zone is 4M, and 50, 70, 80, 110 , 150, 150, 155, and 150°C were transported at a speed of 9 m/min in a thermal dryer divided into 8 stages and foamed to form a 90 μm thick foam layer with a porosity of 50%. Afterwards, the adhesive composition is coated on one side of the base film and one side of the foam layer, and one drying zone is 4 m long and is divided into a total of 8 stages of 60, 70, 75, 100, 120, 140, 145, and 140°C. It was transported at a speed of 8 m/min and dried to form first and second adhesive layers with a thickness of 105 μm and 112 μm, respectively, and a release film layer with a thickness of 50 μm and 75 μm was applied to form an adhesive tape with a thickness of 350 μm. was manufactured.

Production example 22

It was prepared in the same manner as Preparation Example 21, except that 0.1 part by weight of the epoxy curing agent was added instead of 0.1 part by weight of the phenol-based antioxidant.

Production example 23

It was prepared in the same manner as Preparation Example 21, except that 0.1 part by weight of phenol-based antioxidant was added to 0.2 parts by weight.

Manufacturing example 24

It was prepared in the same manner as Preparation Example 21, except that 0.2 parts by weight of catalyst was added instead of 0.1 part by weight of phenol-based antioxidant.

Production example 25

It was prepared in the same manner as Preparation Example 21, except that 0.1 parts by weight of the epoxy curing agent was added in Preparation Example 21.

Production example 26

On one side of the surface-treated base film with a thickness of 43 μm, polyurethane is used as the main material, about 1.0 parts by weight of a foaming agent with a particle size of 6 to 11 μm and about 1.0 parts by weight of 4 to 5 μm beads are added to 100 parts by weight of the main material. , a foaming agent composition containing 1.0 parts by weight of indigo ink, 0.6 parts by weight of a leveling agent, 0.6 parts by weight of an inorganic coupling agent, and 0.1 parts by weight of a phenolic antioxidant is applied, one drying zone is 4 m, and 50, 70, 80, 110 , 150, 150, 155, and 150°C were transported at a speed of 9 m/min in a heat dryer divided into 8 stages and foamed to form a 100 μm thick foam layer with a porosity of 50%. Afterwards, the adhesive composition is coated on one side of the base film and one side of the foam layer, and one drying zone is 4 m long and is divided into a total of 8 stages of 60, 70, 75, 100, 120, 140, 145, and 140°C. It was transported at a speed of 9 m/min and dried to form first and second adhesive layers with a thickness of 100 μm and 107 μm, respectively, and a release film layer with a thickness of 50 μm and 75 μm was applied to form an adhesive tape with a thickness of 350 μm. was manufactured.

Manufacturing Example 27

It was prepared in the same manner as Preparation Example 26, except that 0.1 part by weight of the epoxy curing agent was added instead of 0.1 part by weight of the phenol-based antioxidant.

Manufacturing example 28

It was prepared in the same manner as Preparation Example 26, except that 0.1 part by weight of phenol-based antioxidant was added in Preparation Example 26 at 0.2 parts by weight.

Manufacturing Example 29

It was prepared in the same manner as Preparation Example 26, except that 0.2 parts by weight of the epoxy curing agent was added instead of 0.1 parts by weight of the phenol-based antioxidant.

Production example 30

It was prepared in the same manner as Preparation Example 26, except that 0.1 parts by weight of epoxy curing agent was added in Preparation Example 26.

Comparative Example 1

On one side of the surface-treated base film with a thickness of 43 μm, polyurethane is used as the main material, and for 100 parts by weight of the main material, 1.0 part by weight of indigo ink, 0.6 part by weight of leveling agent, 0.6 part by weight of inorganic coupling agent, and 0.1 part by weight are added. After applying a composition containing a phenolic antioxidant and 0.1 part by weight of an epoxy curing agent, one drying zone is 4 m long and is divided into a total of 8 stages of 50, 70, 80, 110, 150, 150, 155, and 150°C. It was transported and dried in a heat dryer at a speed of 9 m/min to form a cushion layer with a thickness of 90 μm. Afterwards, the adhesive composition is coated on one side of the base film and one side of the cushion layer, and one drying zone is 4 m long and is divided into eight stages of 60, 70, 75, 100, 120, 140, 145, and 140°C. It was transported and dried at a speed of 8 m/min to form first and second adhesive layers with a thickness of 105 μm and 112 μm, respectively, and a release film layer with a thickness of 50 μm and 75 μm was applied to form an adhesive tape with a thickness of 350 μm. was manufactured.

Comparative Example 2

On one side of the surface-treated base film with a thickness of 43 μm, polyurethane is used as the main material, and for 100 parts by weight of the main material, 1.0 part by weight of indigo ink, 0.6 part by weight of leveling agent, 0.6 part by weight of inorganic coupling agent, and 0.1 part by weight are added. After applying a composition containing a phenolic antioxidant and 0.1 part by weight of an epoxy curing agent, one drying zone is 4 m long and is divided into a total of 8 stages of 50, 70, 80, 110, 150, 150, 155, and 150°C. It was transported and dried in a heat dryer at a speed of 8 m/min to form a cushion layer with a thickness of 100 μm. Afterwards, the adhesive composition was coated on one side of the base film and one side of the cushion layer, and one drying zone was divided into eight stages of heat at 60, 70, 75, 100, 120, 140, 145, and 140°C in a 4m dryer. It was transported and dried in a dryer at a speed of 9 m/min to form first and second adhesive layers with a thickness of 100 μm and 107 μm, respectively, and a release film layer with a thickness of 50 μm and 75 μm was applied to form an adhesive layer with a thickness of 350 μm. A tape was prepared.

Comparative Example 3

An adhesive composition is coated on one side of a surface-treated base film with a thickness of 43 μm, and one drying zone is 4 m and has 60, 70, 75, 100, 120, 140, 145, It is transported and dried in a heat dryer divided into a total of 8 stages at 140°C at a speed of 3.5 m/min to form first and second adhesive layers with a thickness of 150 μm and 157 μm, respectively, and 50 μm and 75 μm thick. A release film layer was applied to prepare an adhesive tape with a thickness of 350 μm.

Specific details regarding the foaming agent compositions according to Preparation Examples 1 to 30 and Comparative Examples 1 to 3 are shown in Tables 1 to 7, and the structures of the films prepared according to Preparation Examples 1 to 30 and Comparative Examples 1 to 3 are shown in Tables 8 to 3. It is described in 14.

Manufacturing Example 1 Production example 2 Production example 3 Production example 4 Production example 5 Beads (PU particles coated with carbon black) Content (parts by weight)* Particle size (㎛) blowing agent Content (parts by weight) 0.8 0.8 0.8 0.8 0.8 Particle size (㎛) 6~11 6~11 6~11 6~11 6~11 Foaming rate (%) 140 140 140 140 140 Cushion thickness Thickness (㎛) 60 80 90 100 120 Porosity (%) 40 40 40 40 40 navy ink Content (parts by weight) One One One One One Additives (parts by weight) leveling agent
(polysiloxane) 0.6 0.6 0.6 0.6 0.6 Inorganic coupling agent
(Epoxy silane coupling agent) 0.6 0.6 0.6 0.6 0.6 Phenol-based antioxidant (pentaerythritol tetrakis propionate) 0.1 0.1 0.1 0.1 0.1 epoxy hardener 0.1 0.1 0.1 0.1 0.1

*Content (parts by weight) is based on 100 parts by weight of the main material of the blowing agent composition.

Production example 6 Production example 7 Production example 8 Production example 9 Production example 10 Beads (PU particles coated with carbon black) Content (parts by weight)* Particle size (㎛) blowing agent Content (parts by weight) One One One One One Particle size (㎛) 6~11 6~11 6~11 6~11 6~11 Foaming rate (%) 160 160 160 160 160 Cushion thickness Thickness (㎛) 60 80 90 100 120 Porosity (%) 50 50 50 50 50 navy ink Content (parts by weight) One One One One One Additives (parts by weight) leveling agent
(polysiloxane) 0.6 0.6 0.6 0.6 0.6 Inorganic coupling agent
(Epoxy silane coupling agent) 0.6 0.6 0.6 0.6 0.6 Phenol-based antioxidant (pentaerythritol tetrakis propionate) 0.1 0.1 0.1 0.1 0.1 epoxy hardener 0.1 0.1 0.1 0.1 0.1

*Content (parts by weight) is based on 100 parts by weight of the main material of the blowing agent composition.

Production example 11 Production Example 12 Production Example 13 Production example 14 Production Example 15 Beads (PU particles coated with carbon black) Content (parts by weight)* Particle size (㎛) blowing agent Content (parts by weight) 1.2 1.2 1.2 1.2 1.2 Particle size (㎛) 6~11 6~11 6~11 6~11 6~11 Foaming rate (%) 180 180 180 180 180 Cushion thickness Thickness (㎛) 60 80 90 100 120 Porosity (%) 60 60 60 60 60 navy ink Content (parts by weight) One One One One One Additives (parts by weight) leveling agent
(polysiloxane) 0.6 0.6 0.6 0.6 0.6 Inorganic coupling agent
(Epoxy silane coupling agent) 0.6 0.6 0.6 0.6 0.6 Phenol-based antioxidant (pentaerythritol tetrakis propionate) 0.1 0.1 0.1 0.1 0.1 epoxy hardener 0.1 0.1 0.1 0.1 0.1

*Content (parts by weight) is based on 100 parts by weight of the main material of the blowing agent composition.

Production example 16 Production Example 17 Production example 18 Production example 19 Production example 20 Beads (PU particles coated with carbon black) Content (parts by weight)* Particle size (㎛) blowing agent Content (parts by weight) 1.4 1.4 1.4 1.4 1.4 Particle size (㎛) 6~11 6~11 6~11 6~11 6~11 Foaming rate (%) 200 200 200 200 200 Cushion thickness Thickness (㎛) 90 100 120 90 100 Porosity (parts by weight) 68 68 68 74 74 navy ink content(%) One One One One One Additives (parts by weight) leveling agent
(polysiloxane) 0.6 0.6 0.6 0.6 0.6 Inorganic coupling agent
(Epoxy silane coupling agent) 0.6 0.6 0.6 0.6 0.6 Phenol-based antioxidant (pentaerythritol tetrakis propionate) 0.1 0.1 0.1 0.5 0.5 epoxy hardener 0.1 0.1 0.1 0.1 0.1

*Content (parts by weight) is based on 100 parts by weight of the main material of the blowing agent composition.

Production example 21 Production example 22 Production example 23 Manufacturing example 24 Production example 25 Beads (PU particles coated with carbon black) Content (parts by weight)* One One One One One Particle size (㎛) 4~5 4~5 4~5 4~5 4~5 blowing agent Content (parts by weight) One One One One One Particle size (㎛) Foaming rate (%) 160 160 160 160 160 Cushion thickness Thickness (㎛) 90 90 90 90 90 Porosity (parts by weight) 50 50 50 50 50 navy ink content(%) One One One One One Additives (parts by weight) leveling agent
(polysiloxane) 0.6 0.6 0.6 0.6 0.6 Inorganic coupling agent
(Epoxy silane coupling agent) 0.6 0.6 0.6 0.6 0.6 Phenol-based antioxidant (pentaerythritol tetrakis propionate) 0.1 0.2 0.1 epoxy hardener 0.1 0.2 0.1

*Content (parts by weight) is based on 100 parts by weight of the main material of the blowing agent composition.

Production example 26 Manufacturing Example 27 Manufacturing example 28 Manufacturing Example 29 Production example 30 Beads (PU particles coated with carbon black) Content (parts by weight)* One One One One One Particle size (㎛) 4~5 4~5 4~5 4~5 4~5 blowing agent Content (parts by weight) One One One One One Particle size (㎛) 6~11 6~11 6~11 6~11 6~11 Foaming rate (%) 160 160 160 160 160 Cushion thickness Thickness (㎛) 100 100 100 100 100 Porosity (%) 50 50 50 50 50 navy ink Content (parts by weight) One One One One One Additives (parts by weight) leveling agent
(polysiloxane) 0.6 0.6 0.6 0.6 0.6 Inorganic coupling agent
(Epoxy silane coupling agent) 0.6 0.6 0.6 0.6 0.6 Phenol-based antioxidant (pentaerythritol tetrakis propionate) 0.1 0.2 0.1 epoxy hardener 0.1 0.2 0.1

*Content (parts by weight) is based on 100 parts by weight of the main material of the blowing agent composition.

Comparative Example 1 Comparative Example 2 Comparative Example 3 Beads (PU particles coated with carbon black) Content (parts by weight)* Particle size (㎛) blowing agent Content (parts by weight) Particle size (㎛) Foaming rate (%) Cushion thickness Thickness (㎛) 90 100 0 Porosity (%) 50 50 0 navy ink Content (parts by weight) One One Additives (parts by weight) leveling agent
(polysiloxane) 0.6 0.6 Inorganic coupling agent
(Epoxy silane coupling agent) 0.6 0.6 Phenol-based antioxidant (pentaerythritol tetrakis propionate) 0.1 0.1 epoxy hardener 0.1 0.1

*Content (parts by weight) is based on 100 parts by weight of the main material of the blowing agent composition.

structure
(㎛) Manufacturing Example 1 Production example 2 Production example 3 Production example 4 Production example 5 Release film layer 50 50 50 50 50 Adhesive layer 120 110 105 100 90 cushion layer 60 80 90 100 120 base layer 43 43 43 43 43 Adhesive layer 127 117 112 107 97 Release film layer 75 75 75 75 75 total thickness 350 350 350 350 350

structure
(㎛) Production example 6 Production example 7 Production example 8 Production example 9 Production example 10 Release film layer 50 50 50 50 50 Adhesive layer 120 110 105 100 90 cushion layer 60 80 90 100 120 base layer 43 43 43 43 43 Adhesive layer 127 117 112 107 97 Release film layer 75 75 75 75 75 total thickness 350 350 350 350 350

structure
(㎛) Production example 11 Production example 12 Production Example 13 Production example 14 Production Example 15 Release film layer 50 50 50 50 50 Adhesive layer 120 110 105 100 90 cushion layer 60 80 90 100 120 base layer 43 43 43 43 43 Adhesive layer 127 117 112 107 97 Release film layer 75 75 75 75 75 total thickness 350 350 350 350 350

structure
(㎛) Production example 16 Production Example 17 Production example 18 Production Example 19 Production example 20 Release film layer 50 50 50 50 50 Adhesive layer 105 100 90 105 100 cushion layer 90 100 120 90 100 base layer 43 43 43 43 43 Adhesive layer 112 107 97 112 107 Release film layer 75 75 75 75 75 total thickness 350 350 350 350 350

structure
(㎛) Production example 21 Production example 22 Production example 23 Manufacturing example 24 Production example 25 Release film layer 50 50 50 50 50 Adhesive layer 105 105 105 105 105 cushion layer 90 90 90 90 90 base layer 43 43 43 43 43 Adhesive layer 112 112 112 112 112 Release film layer 75 75 75 75 75 total thickness 350 350 350 350 350

structure
(㎛) Production example 26 Manufacturing Example 27 Manufacturing Example 28 Manufacturing Example 29 Production example 30 Release film layer 50 50 50 50 50 Adhesive layer 100 100 100 100 100 cushion layer 100 100 100 100 100 base layer 43 43 43 43 43 Adhesive layer 107 107 107 107 107 Release film layer 75 75 75 75 75 total thickness 350 350 350 350 350

structure
(㎛) Comparative Example 1 Comparative Example 2 Comparative Example 3 Release film layer 50 50 50 Adhesive layer 105 100 150 cushion layer 90 100 0 base layer 43 43 43 Adhesive layer 112 107 157 Release film layer 75 75 75 total thickness 350 350 350

Example 1

The adhesion of the SUS adherend was measured according to ASTM-D3330, and the results are shown in Table 15 below.

Adhesion (gf/in) Adhesion (gf/in) Adhesion (gf/in) Manufacturing Example 1 3,400 Production Example 12 3,500 Production example 23 3,500 Production example 2 3,400 Production Example 13 3,500 Manufacturing example 24 3,500 Production example 3 3,400 Production example 14 3,500 Production example 25 3,500 Production example 4 3,400 Production Example 15 3,400 Production example 26 3,500 Production example 5 3,400 Production example 16 3,400 Manufacturing Example 27 3,500 Production example 6 3,400 Production Example 17 3,400 Manufacturing example 28 3,500 Production example 7 3,500 Production Example 18 3,500 Manufacturing Example 29 3,500 Production example 8 3,500 Production example 19 3,500 Production example 30 3,500 Production example 9 3,500 Production example 20 3,400 Comparative Example 1 2,800 Production example 10 3,400 Production example 21 3,500 Comparative Example 2 2,800 Production example 11 3,400 Production example 22 3,500 Comparative Example 3 2,900

As shown in Table 15, it was confirmed that even when adhesives of the same composition were used, the adhesive strength was relatively low in the absence of a foam layer.

Example 2

Impact strength was measured three times in accordance with ASTM D1794, and the average values of the results are listed in Table 16.

Impact intensity (mJ) Impact intensity (mJ) Impact intensity (mJ) Manufacturing Example 1 112 Production example 12 256 Production example 23 288 Production example 2 168 Production Example 13 296 Manufacturing example 24 312 Production example 3 176 Production example 14 304 Production example 25 336 Production example 4 200 Production Example 15 312 Production example 26 280 Production example 5 208 Production example 16 288 Manufacturing Example 27 280 Production example 6 160 Production Example 17 296 Manufacturing Example 28 288 Production example 7 224 Production Example 18 288 Manufacturing Example 29 312 Production example 8 312 Production Example 19 256 Production example 30 312 Production example 9 336 Production example 20 272 Comparative Example 1 96 Production example 10 312 Production example 21 272 Comparative Example 2 80 Production example 11 200 Production example 22 280 Comparative Example 3 40

As shown in Table 16 above, in the case of Comparative Examples 1 to 3 without the foam layer, the impact strength was less than 100 mJ. On the other hand, in the case of a foam layer of the same thickness, the higher the foam rate and/or the higher the porosity, the higher the impact strength, and in the case of a foam layer of the same thickness, a foam layer with a porosity of 68% has a porosity of 74%. It was found to have a higher impact strength compared to the foam layer. Although the description has been made with reference to the above examples, those skilled in the art will understand that it is within the scope without departing from the spirit and scope of the present invention as set forth in the following patent claims. It will be understood that various modifications and changes can be made to the present invention.

100: base layer 200: cushion layer
300: Adhesive layer 400: Release layer
DT: dot structure

Claims (13)

delete delete delete delete delete delete delete Applying a foaming agent composition on the base layer and foaming it to form a cushion layer;
Forming an adhesive layer by applying an adhesive composition on the first release layer;
forming a dot structure on the second release layer;
A first surface that laminates the surface of the second release layer on which the dot structure is formed and the adhesive layer to form a structure in which the second release layer, the dot structure, the adhesive layer, and the first release layer are sequentially stacked. lamination step; and
The second release layer is removed from the adhesive layer and the dot structure, and the cushion layer is laminated to the adhesive layer and the dot structure, thereby forming the base layer, the cushion layer, the dot structure, the adhesive layer, and the first layer. 1 A patch manufacturing method including a second lamination step of forming a structure in which release layers are sequentially laminated. According to clause 8,
A method of manufacturing a patch, wherein the dot structure has one of the shapes of a cone, sphere, buckyball, cylinder, and half circle. According to clause 9,
The size of each dot structure is 1 mm to 10 mm based on the longest radius, and the spacing between the adjacent dot structures is 0.2 cm to 2 cm. According to clause 10,
A patch manufacturing method, wherein the dot structure includes silica gel. According to clause 8,
The cushion layer has one or more of the following characteristics (i) or (ii),
(i) an expansion rate of 140% to 200%,
(ii) a porosity of 40% to 74%;
The expansion rate (RE) satisfies Equation 1 below,

<Equation 1>
(Where, R _E : foaming rate, T _f : thickness of cushion layer after foaming, T ₀ : thickness of cushion layer before foaming)
A patch manufacturing method, characterized in that the porosity (ϕ) satisfies Equation 2 below.

<Equation 2>
(Where, ϕ: porosity, V: total volume of cushion layer, Vv: volume of pores, Vs: volume of solid outside the pores) According to clause 12,
The base layer includes thermoplastic polyurethane (TPU),
The cushion layer includes a foaming agent having a particle size of 6 to 11 μm and a foaming agent having a particle size of 4 to 5 μm,
The adhesive layer is a polyvinyl alcohol-based adhesive; Acrylic adhesive; A method of manufacturing a patch comprising at least one of epoxy adhesives.