KR101297668B1 - Antimicrobial fabric for protective cover of mobile device - Google Patents

Abstract

PURPOSE: An antibacterial fabric for a mobile device protection cover is provided to easily attach the cover with a board when the cover is manufactured, to prevent generation or breeding of harmful microorganisms such as bacteria, and to minimize a scratch on an image display unit. CONSTITUTION: An antibacterial fabric for a mobile device protection cover comprises: a base fabric (110) comprising a grey fabric which is selected among one side-napped fabric or one side-knitted goods and an antibacterial layer formed on one side or both sides which is (are) napped on the grey fabric; and a hot melt adhesive layer (120) which is formed on the back side of the napped side. The antibacterial layer is formed of polyvalent metal salts of pyrithione. The grey fabric is a tricot construction of polyester yarns.

Description

Antimicrobial fabric for protective cover of mobile device

The present invention relates to an antimicrobial fabric, and more particularly, to an antimicrobial fabric used in the manufacture of a protective cover of a mobile device.

Recently, as mobile devices having a video display function such as smart phones are distributed in large quantities, the market for accessories that protect or decorate mobile devices having a video display function is rapidly growing. A representative of the accessory of the mobile device having a video display function is a protective cover called a mobile phone case or a mobile phone cover. The basic function of the protective cover of the mobile phone is to absorb the shock itself when the shock is applied to the mobile phone to minimize the shock transmitted to the mobile phone or to prevent scratches on the body of the mobile phone. However, in recent years, a mobile phone protective cover having a function of carrying or decorating a mobile phone, for example, having a mobile function or a wallet function, has appeared on the market. One of the recent mobile phone protective covers is a flip protective cover. Flip type mobile phone protective cover is generally composed of a front cover for protecting the front with a video display of the mobile phone and a rear cover for protecting the back of the mobile phone, the front cover and the rear cover is connected by a flip unit having a folding function Has a form. 1 is a photograph showing an example of a flip-type mobile phone protective cover, Figure 2 is a photograph showing another example of a flip-type mobile phone protective cover. The mobile phone protective cover of the flip type shown in Figure 1 is a front cover made of a leather material, a rear cover made of a synthetic cell phone storage unit attached to the leather material, and a leather material of the front cover and the leather material of the back cover It consists of a flip portion connecting the fabric. In addition, the flip-type mobile phone protective cover shown in Figure 2 is made of a form in which the front cover made of a fabric material and the back cover made of a synthetic cell phone storage portion is connected by a flip portion of the fabric material.

The front cover of the flip-type cell phone protective cover generally protects the LCD screen from being cracked or broken when an external shock is applied to the mobile phone, or scratches are caused by friction with the cloth when the phone is stored in a pocket. Serves to prevent this from happening. The front cover generally consists of an outer skin and an inner skin laminated to both sides of the sheet. At this time, the outer shell is generally used a synthetic fiber having a high elasticity, for example, a fabric made of polyurethane fibers. In addition, an epoxy plate, a polycarbonate plate, a bakelite plate, an acrylic plate, etc., which are hard to be broken and have good elasticity and less warpage, are used. In addition, since the inner skin is directly in contact with the liquid crystal screen of the mobile phone, a fabric (or woven fabric), knitted fabric (or knitted fabric), etc., which have a good elasticity and a soft touch, are generally used as the material of the inner skin.

On the other hand, the microphone unit, which receives the voice signal of the talker from the mobile phone and delivers it to the inside of the device, is contaminated by the saliva and breathing of the caller, which is emitted when the caller speaks or exhales. When the cell phone call is maintained by the heat generated within itself to maintain an appropriate temperature, so that the temperature conditions for bacteria to grow. In addition, mobile phones are generally stored in various places such as pockets, bags, and inside the vehicle at the convenience of the user, which makes them easy to come into contact with many kinds of germs inhabiting each storage area. Since bacteria are easily introduced, various germs propagate in the body of the mobile phone, the contaminated microphone part, the keypad, and the speaker part, which causes odor in severe cases. As described above, contamination of the mobile phone by bacteria is mainly generated in front of the mobile phone in which the image display unit such as a liquid crystal screen is located.

Recently, as the consumer's desire for health-friendly products is stronger than ever, research activities for adding health-related functions such as far-infrared radiation, anion radiation, and antibacterial functions to electronic products such as mobile phones continue. As a method for preventing bacterial contamination of a mobile phone, Korean Patent Publication No. 10-0732966 discloses 0.5 to 5 wt% of rare earth ceramics with far-infrared radiation, anion radiation, and antimicrobial functions, or nano gold of 1000 ppm or more in a size of 200 nm or less. / Case containing an injection material made of a polymer material containing silver, and solids having far-infrared radiation, anion radiation, and antibacterial functions on the case body made of the injection material, 3 to 35 wt% of rare earth ceramics or 500 ppm or less in size of 200 nm or less. Undercoat layer formed with an organic, organic, or inorganic composite coating layer containing the above nano gold / silver, and organic gold / silver added at 500 ppm or more in a size of 200 nm or less to enhance slip and hydrophilicity on the undercoat layer A pro-health functional cell phone case comprising a coating layer is disclosed. There. In addition, the Republic of Korea Patent Publication No. 10-2006-0129586 is a mobile phone storage case made of at least one material or a mixture of any one of metal, plastic, synthetic resin, minerals, fabrics, leather, silicone, rubber poly-based or a mixture thereof, Disclosed is a mobile phone storage case in which torn fine particles are mixed at 0.01 to 50% by weight based on 100% by weight of the entire mobile phone storage case. However, the mobile phone storage case is a case which does not directly contact the image display unit of the mobile phone, and is not suitable as a mobile phone case in which the image display unit is directly exposed to the outside such as a smart phone recently. If it comes in direct contact, there is a risk of scratching, and since the ceramic particles, etc. are introduced during the shape forming process of the case, there is a fear of difficulty in molding.

The present invention has been drawn under such a background, and an object of the present invention is to be easily adhered to a plate when manufacturing a protective cover of a mobile device, especially a flip-type mobile phone protective cover, and to prevent the generation or reproduction of harmful microorganisms such as bacteria. It is possible to provide an antimicrobial fabric for a mobile device protective cover that can be used as a material of the endothelial material directly in contact with an image display unit such as a liquid crystal display.

Furthermore, an object of the present invention is to provide an antimicrobial fabric for a mobile device protective cover that can minimize the scratch of the video display even if the direct contact with the video display of the mobile device.

In order to solve the above object, in one embodiment of the present invention; And a hot melt adhesive layer formed on one side of the base fabric, wherein the base fabric is coated with an antimicrobial agent on the dough fabric, and the dough fabric is selected from a brushed fabric or a brushed knitted fabric, and the antimicrobial agent is pyrithione. It provides an antibacterial fabric for mobile device protective cover, characterized in that the polyvalent metal salt. In addition, another example of the present invention; A first adhesive layer formed on one surface of the base fabric; A polyester film laminated with a base fabric by the first adhesive layer; And a second adhesive layer formed on one surface of the polyester film, wherein the base fabric is coated with an antimicrobial agent on a dough fabric, and the dough fabric is selected from a brushed fabric or a brushed knitted fabric, and the antibacterial agent It provides a polyvalent metal salt of pyrithione, wherein the first adhesive is a hot melt adhesive, the second adhesive is a hot melt adhesive or a pressure sensitive adhesive provides an antimicrobial fabric for mobile device protective cover.

The antimicrobial fabric for mobile device protective cover according to the present invention can minimize the scratch of the image display unit even when directly in contact with the image display unit of the mobile device, and at the same time very excellent antibacterial. In addition, the antimicrobial fabric for mobile device protective cover according to the present invention is good weather resistance and dimensional stability can maintain the original state for a long time. In addition, the antimicrobial fabric for mobile device protective cover according to the present invention includes a hot melt adhesive layer, it can be easily laminated on a plate such as epoxy plate, polycarbonate plate, becite plate or acrylic plate. Therefore, the fabric for mobile device protective cover according to the present invention is useful as a lining material in direct contact with the mobile phone body in the mobile device protective cover, in particular the endothelial material of the front cover of the flip-type mobile phone protective cover.

1 is a photograph showing an example of a flip-type mobile phone protective cover, Figure 2 is a photograph showing another example of a flip-type mobile phone protective cover.
Figure 3 shows a cross-sectional structure of the antimicrobial fabric for mobile device protective cover according to an embodiment of the present invention, Figure 4 shows a cross-sectional structure of the antimicrobial fabric for mobile device protective cover according to another embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. If it is determined that the gist of the present invention may be obscured, the detailed description thereof will be omitted. In addition, the technical idea of the present invention may be implemented by those skilled in the art without being limited or limited to the following preferred example.

Before describing a preferred embodiment of the present invention will be described the terms used in the present invention. In the present invention, a "mobile device protective cover" refers to various types of covers for protecting a mobile device having an image display unit such as a mobile phone, a portable computer, a PDA, and an MP3 player. In addition, the term "protective cover" in the present invention is a concept including terms such as a cover, a case, a protective case used in the art.

The present invention relates to an antimicrobial fabric for mobile device protective cover, Figure 3 shows a cross-sectional structure of the antimicrobial fabric for mobile device protective cover according to an embodiment of the present invention. Antimicrobial fabric 100 for a mobile device protective cover according to an embodiment of the present invention includes a base fabric 110 and a hot melt adhesive layer 120, preferably may further include a release paper (130). Hereinafter, the description will be made for each component.

Base fabric

In the present invention, the base fabric is coated with an antimicrobial agent on the dough fabric, wherein the antimicrobial agent may be coated on one or both sides of the dough fabric. At this time, the antimicrobial agent is preferably a polyvalent metal salt of pyrithione in consideration of the antimicrobial effect and the ease of coating on the dough fabric surface, specifically magnesium pyrithione, barium pyrithione, bismuth pyrithione, strontium pyrithione, copper pyrithione, zinc It may be composed of one or more selected from the group consisting of pyrithione, cadmium pyrithione and copper pyrithione, more preferably zinc pyrithione. As a method of coating the antimicrobial agent on the dough fabric, various known methods such as spray coating, dip coating, spray coating, and blade coating may be used. For example, the antimicrobial agent may be uniformly coated on the surface of the dough fabric by an immersion coating in which the dough fabric is immersed in a coating solution containing zinc pyrithione as an antimicrobial agent and then taken out and dried at a predetermined temperature to remove the solvent.

In addition, the dough fabric constituting the base fabric in the present invention may be selected from brushed fabric or brushed knitted fabric. The brushed fabric or knitted fabric has a soft touch to minimize scratches on the video display even when rubbed with the video display of the mobile device. The brushing process may be performed on one side or both sides of the dough fabric, when the brushing process is performed only on one side of the dough fabric, a hot melt adhesive layer to be described later is formed on the side opposite to the pore-processed surface. If the dough is brushed on one side only, and the antimicrobial agent is coated only on one side of the dough fabric, the antimicrobial agent is coated on the brushed side. When the antimicrobial fabric for mobile device protective cover according to the present invention is used as one component of the protective cover is because one side of the base fabric brushed and the antimicrobial agent is coated in direct contact with the mobile device.

In addition, it is preferable that the dough fabric is a brushed knitted fabric, which is excellent in elasticity and less wrinkled, can absorb external impact, less tearing by external force, and exhibits good dimensional stability. In addition, the knitted fabric may be made of polyolefin yarn (Polyolefin yarn), polyester yarn (Polyester yarn) and the like, it is more preferably made of a double polyester yarn (Polyester yarn). Dough fabric made of polyester yarn is excellent in acid resistance, alkali resistance, mechanical strength and durability. The polyester yarn includes all of the spun yarn or polyester filament yarn of the polyester fiber according to the manufacturing method. The polyester filament yarn is a single yarn (單 絲) of one strand, two ply yarns, three ply yarns, etc., depending on the configuration of the yarn, the left twist yarn (左 撚 絲), jet twist yarn, There are twisted yarns or twisted yarns, and depending on the degree of twist, there are lecturers, weak yarns, depressed yarns, and twisted yarns (or stretch yarns). Polyester yarns in the invention include all of the various types of yarns listed above. On the other hand, if the polyester constituting the polyester yarn is used as a raw material of the fiber is not particularly limited, the type is preferably commercially available polyethylene terethalate (Polyethylene terphethalate, PET) excellent in strength. In addition, the knitted fabric is more preferably Tricot (Tricot). Tricot is a kind of warp knitted by vertical weaving. It is soft and does not have wrinkles and does not loosen edges.

In addition, in the present invention, the dough fabric is preferably a fabric or knitted fabric impregnated with a polyurethane foam, more preferably a knitted fabric impregnated with a polyurethane foam, and most preferably a tricot impregnated with a polyurethane foam. Polyurethane foam is a sponge-like porous material made of polyol and diisocyanate, and there are two methods for forming polyurethane, a one-shot method and a prepolymer process. One-shot method is a method of mixing all the raw material components at once and reacting to foam. The prepolymer method is a reaction of a part of glycol and diisocyanate in advance to make a prepolymer (partial polymerizer), and the remaining glycol, foaming agent, and catalyst To mix and foam. In the present invention, the polyurethane foam is preferably soft or semi-rigid. Since soft or semi-hard polyurethane foam is excellent in cushioning or shock absorbing power, the dough fabric impregnated with the soft or semi-hard polyurethane foam can protect the image display part of a mobile device such as a liquid crystal screen from external impact. In addition, if the dough fabric impregnated with the polyurethane foam is dyed before the polyurethane foam is impregnated, the weather resistance of the dough fabric is improved by the polyurethane foam, for example, daylight fastness. It is preferable that it is 10-25 weight part per 100 weight part of tricoats, and, as for the impregnation amount of the said polyurethane foam, it is more preferable that it is 15-20 weight part.

Hot melt  Adhesive layer

Antimicrobial fabric for mobile device protective cover according to an embodiment of the present invention includes a hot melt adhesive layer formed on one surface of the base fabric. The hot melt adhesive layer is a layer made of a known hot melt adhesive, which facilitates lamination of the antimicrobial fabric and the sheet when the mobile device protective cover is manufactured from the antimicrobial fabric according to the present invention. The hot melt adhesive is an adhesive which is bonded in a heating, molten state and solidified by cooling. The hot melt adhesive which can be used in the present invention can bond with a selected base fabric to form a solid layer, and if melted when heated again, The type is not particularly limited and may be selected from known hot melt adhesives such as polyester based hot melt adhesives, ethylene-vinyl acetate resin based hot melt adhesives, polyamide based hot melt adhesives, polyurethane based hot melt adhesives and the like. Of these, it is preferable that the polyurethane-based hot melt adhesive in consideration of the adhesion to the base fabric and the ease of use. In addition, in the present invention, the hot melt adhesive is preferably in a range in which the use temperature does not deform the base fabric, for example, may be 80 ~ 200 ℃, more preferably 80 ~ 180 ℃, 100 ~ 160 ℃ Most preferred. The use temperature is the same concept as the melting point of the hot melt adhesive. In the present invention, a method of forming a hot melt adhesive layer on one side of the base fabric is a method of applying a hot melt adhesive solution to a side of the base fabric to a predetermined thickness and removing the solvent by drying, or a hot melt adhesive in the form of a film Laminating on the base fabric, heating, pressurizing, bonding and cooling, and the like. In addition, the hot melt adhesive layer in the antimicrobial fabric for mobile device protective cover according to an embodiment of the present invention may be replaced with a pressure-sensitive adhesive layer contained in the antimicrobial fabric for mobile device protective cover according to the following example of the present invention.

Release paper

Antimicrobial fabric for mobile device protective cover according to an embodiment of the present invention may preferably further comprise a release paper laminated with the base fabric by a hot melt adhesive layer. When the antimicrobial fabric for mobile device protective cover according to an embodiment of the present invention consists of only the base fabric and the hot melt adhesive layer formed on one surface of the base fabric, foreign substances such as dust may be attached to the hot melt adhesive layer, Since the adhesive strength is lowered, when the mobile device protective cover is manufactured from the antimicrobial fabric according to the present invention, the antimicrobial fabric and the sheet may not be smoothly laminated. By attaching the release paper to the hot melt adhesive layer, it is possible to prevent contamination of the hot melt adhesive layer, to remove the release paper when manufacturing the mobile device protective cover with the antimicrobial fabric, and to smoothly bond the antimicrobial fabric and the plate by using the hot melt adhesive layer of the antibacterial fabric. Can be. As a method of laminating the release paper with the base fabric, the hot melt adhesive solution is applied to the release paper to a predetermined thickness, and the solvent is removed by drying to form a hot melt adhesive layer, and the base fabric is laminated thereon, and then pressurized and heated to be laminated. Or a method of laminating, heating, pressing and laminating the hot melt adhesive and the base fabric in the form of a film on a release paper in order.

Figure 4 shows a cross-sectional structure of the antimicrobial fabric for mobile device protective cover according to another embodiment of the present invention. Antimicrobial fabric 200 for mobile device protective cover according to another embodiment of the present invention includes a base fabric 210, the first adhesive layer 250, the polyester film 240 and the second adhesive layer 220, Preferably, the release paper 230 may further include. Hereinafter, the description will be made for each component.

Base fabric

Base fabric is the same as described above in the antimicrobial fabric for mobile device protective cover according to an embodiment of the present invention and will not be described.

First adhesive layer

In the antimicrobial fabric for mobile device protective cover according to another embodiment of the present invention as the first adhesive layer is formed on one side of the base fabric, and corresponds to the hot melt adhesive layer of the antimicrobial fabric for mobile device protective cover according to an embodiment of the present invention Omit the description.

Polyester film

The antimicrobial fabric for a mobile device protective cover according to another example of the present invention preferably comprises a polyester film laminated with the base fabric by a first adhesive layer. The polyester film has high elastic modulus, impact resistance, tensile strength, and dimensional stability to increase durability of the antimicrobial fabric for mobile device protective cover, and minimize deformation of the base fabric under pressure and heating conditions. When manufacturing a mobile device protective cover with an antimicrobial fabric according to the present invention, the pressing and heating process is generally performed in the lamination process of the antimicrobial fabric and the plate, wherein the polyester film protects the base fabric from the pressing and heating conditions. In the present invention, the polyester film is preferably a polyethylene terphethalate (PET) film, and more preferably a stretched PET film in view of the above characteristics. The stretched PET film has crystals that are oriented, greatly improving the strength, and also having excellent dimensional stability at high temperatures. As a method of laminating the polyester film with the base fabric, a hot melt adhesive solution is applied on the polyester film to a predetermined thickness, and the solvent is removed by drying to form a hot melt adhesive layer, and the base fabric is laminated thereon. The method of laminating | stacking by pressurizing and heating, or the method of laminating | stacking, heating, pressurizing and laminating | stacking a hot-melt adhesive agent and base fabric of film form on a polyester film in order, etc. are mentioned.

Second adhesive layer

The antimicrobial fabric for mobile device protective cover according to another embodiment of the present invention includes a second adhesive layer formed on one side of the polyester film is not laminated with the base fabric. In the present invention, the second adhesive layer is a layer made of a hot melt adhesive or a pressure-sensitive adhesive, and facilitates lamination of the antimicrobial fabric and the sheet when the mobile device protective cover is manufactured from the antimicrobial fabric.

In the antimicrobial fabric for mobile device protective cover according to another embodiment of the present invention, the hot melt adhesive constituting the second adhesive layer can be formed by bonding to a polyester film to form a solid state layer and melted when heated again. Is not particularly limited and may be selected from known hot melt adhesives such as polyester based hot melt adhesives, ethylene-vinyl acetate resin based hot melt adhesives, polyamide based hot melt adhesives, polyurethane based hot melt adhesives and the like. Of these, it is preferable that the polyurethane-based hot melt adhesive in consideration of the adhesive force to the polyester film and the ease of use. In addition, the hot melt adhesive constituting the second adhesive layer is preferably a range in which the use temperature does not deform the polyester film, for example, may be 80 ~ 200 ℃, more preferably 80 ~ 180 ℃, It is most preferable that it is 100-160 degreeC. The use temperature is the same concept as the melting point of the hot melt adhesive. In the present invention, a method of forming a second adhesive layer with a hot melt adhesive on one surface of a polyester film may be performed by applying a hot melt adhesive solution on a surface of a polyester film laminated with a base fabric by a first adhesive layer to a predetermined thickness. A method of removing the solvent by drying, or a method of laminating a hot melt adhesive in the form of a film on a polyester film laminated with a base fabric by a first adhesive layer, heating, pressing, bonding, and cooling.

In addition, the pressure-sensitive adhesive constituting the second adhesive layer in the antimicrobial fabric for mobile device protective cover according to another embodiment of the present invention has an adhesive force by pressing, for example silicone pressure-sensitive adhesive, acrylic pressure-sensitive adhesive, poly It may be selected from known pressure-sensitive adhesives such as urethane-based pressure-sensitive adhesives. It is preferable that it is an acrylic pressure sensitive adhesive in consideration of the adhesive force with a dual polyester film, and the ease of use. The acrylic pressure sensitive adhesive may be in the form of a composition comprising, for example, an acrylic ester copolymer and ethyl acetate. At this time, the monomer constituting the acrylic ester copolymer is preferably acrylic acid, butyl acrylate, ethenyl acetate and 2-ethylhexyl acrylate. In the present invention, a method of forming a second adhesive layer with a pressure-sensitive adhesive on one surface of a polyester film includes a pressure-sensitive adhesive solution on a surface of a polyester film laminated with a base fabric by a first adhesive layer to a predetermined thickness. And a method of removing the solvent by coating and drying. At this time, the pressure-sensitive adhesive solution may include 49 to 51% by weight of the acrylic ester copolymer, 25 to 35% by weight of ethyl acetate and the remaining amount of the organic solvent. In addition, toluene may be used as the organic solvent. When the second adhesive layer is made of a pressure-sensitive adhesive in the antimicrobial fabric for mobile device protective cover according to another embodiment of the present invention, when manufacturing the mobile device protective cover with an antimicrobial fabric, the antimicrobial fabric and the plate may be laminated without pressure. .

Release paper

Antimicrobial fabric for mobile device protective cover according to another embodiment of the present invention may preferably further comprise a release paper laminated with a polyester film by a second adhesive layer. When the antimicrobial fabric for mobile device protective cover according to another embodiment of the present invention is composed of a sequential laminated form of the base fabric, the first adhesive layer, the polyester film and the second adhesive layer, foreign matter such as dust adheres to the second adhesive layer. It may be, and the adhesive force of the second adhesive layer is lowered, the lamination of the antimicrobial fabric and the plate may not be smooth when manufacturing the mobile device protective cover with the antimicrobial fabric according to the invention. Attaching the release paper to the second adhesive layer prevents contamination of the second adhesive layer, removes the release paper when manufacturing the mobile device protective cover with the antimicrobial fabric, and smoothes the antimicrobial fabric and the plate using the second adhesive layer of the antimicrobial fabric. Can be combined. As a method of laminating the release paper with the polyester film, a solution of a second adhesive such as a hot melt adhesive or a pressure-sensitive adhesive is applied on the release paper to a predetermined thickness, and the solvent is removed by drying to form a second adhesive layer. A method of laminating a polyester film laminated with a base fabric by a polyester film or a first adhesive layer, followed by pressing and heating to laminate, or laminating and heating a hot melt adhesive and a polyester film in the form of a film on a release paper in order. , A method of pressing and laminating, a method of laminating, heating, pressing and laminating a polyester film laminated with a base fabric by a film-type hot melt adhesive and a first adhesive layer on a release paper in order.

Hereinafter, the present invention will be described in more detail by way of examples. However, the following examples are intended to clearly illustrate the present invention and are not intended to limit the scope of protection of the present invention.

One. Rawji  Fabrication

Production Example 1

PET textured yarn (DTY) having a fineness of 65 days was warped with a tricot knitting machine to prepare a tricot made of PET yarn. One side of the tricot was brushed to form a pile and heat-fixed at 180 ° C. Tricoats were then dyed and dried at 160 ° C. in a tenter. Subsequently, the dough was fabricated by making the direction and length of the pile constant by the tricoat.

Production Example 2

PET textured yarn (DTY) having a fineness of 65 days was warped with a tricot knitting machine to prepare a tricot made of PET yarn. One side of the tricot was brushed to form a pile and heat-fixed at 180 ° C. Thereafter, the tricot was dyed, dried at 160 ° C. in a tenter, and then subjected to a shearing treatment to keep the direction and length of the pile constant. The tricoat is then immersed in a solution diluted with methyl ethyl ketone, an organic solvent (SEALECTION® 500; supplier: DEMILEC LLC., USA; CAS registration number: 9009-54-5), and then removed through a tenter. Tenter) was dried to 130 ℃ to remove the organic solvent and the polyurethane foam was impregnated in the tricoat. At this time, the impregnation amount of the polyurethane foam was 17 to 18 parts by weight per 100 parts by weight of the tricoat. The pile portion of the tricot impregnated with the polyurethane foam was finely ground with sandpaper to prepare a dough fabric.

Comparative Production Example 1

PET textured yarn (DTY) having a fineness of 65 days was warped with a tricot knitting machine to prepare a tricot made of PET yarn. The tricot was dyed and dried at 160 ° C. in a tenter to prepare a live support.

2. Manufacture of Base Fabrics

Production Example 3

Zinc pyrithione by diluting antibacterial coating solution (Product name Sanitized® TH 27-24; supplier: Clariant, Switzerland) containing at least about 25% by weight of pyrithione zinc (CAS No. 13463-41-7) An antimicrobial coating diluent containing about 5% by weight (Pyrithione zinc; CAS Registry Number: 13463-41-7) was prepared. Subsequently, the dough fabric prepared in Preparation Example 1 was immersed in an antimicrobial coating diluent and taken out, dried at 150 ° C. in a tenter to remove the solvent, and the antimicrobial was coated on the fabric. The antimicrobial-coated dough was used as a base fabric in the manufacturing process of the antimicrobial fabric for mobile device protective cover described later.

Production Example 4

A base fabric made of a dough fabric coated with an antimicrobial agent was manufactured under the same conditions and methods as in Preparation Example 3, except that the dough fabric prepared in Preparation Example 2 was used instead of the dough fabric prepared in Preparation Example 1.

Comparative Preparation Example 2

A base fabric made of a dough fabric coated with an antimicrobial agent was manufactured under the same conditions and methods as in Preparation Example 3, except that the dough fabric prepared in Comparative Preparation Example 1 was used instead of the dough fabric prepared in Preparation Example 1.

3. Manufacture of fabric for mobile device protective cover

Production Example 5

A solution-type polyurethane hot melt adhesive (composition: 35 wt% polyurethane resin, 58.5% methyl ethyl ketone) product name: SMTHANE SMT-35; supplier: Smatech Co., Korea. Dry to form a hotmelt adhesive layer. Subsequently, the base fabric obtained in Preparation Example 3 was laminated on the hot melt adhesive layer with the brushed surface facing upwards, and pressed with a roller heated to about 150 ° C. to prepare a fabric for a mobile device protective cover.

Production Example 6

A solution type acrylic pressure-sensitive adhesive (product name: DS-7250; supplier: Deoksan, Korea) was applied to the release paper at a thickness of about 70 μm and dried at about 120 ° C. to form a pressure-sensitive adhesive layer. Thereafter, the PET film was laminated on the pressure-sensitive adhesive layer and pressed with a roller to prepare a primary fabric in which a release paper and a PET film were laminated by the pressure-sensitive adhesive layer. At this time, the solution-type acrylic pressure-sensitive adhesive is composed of 49 to 51% by weight of acrylic ester copolymer (CAS registration number: 35239-19-1), 10 to 20% by weight of toluene and 25 to 35% by weight of ethyl acetate. Then, a solution-type polyurethane hot melt adhesive (composition: 35% by weight of polyurethane resin, 58.5% of methyl ethyl ketone) product name: SMTHANE SMT-35; supplier: Sematech Co., Ltd., Korea, was formed on a PET film of primary fabric. It was applied to a thickness and dried to about 100 ℃ to form a hot melt adhesive layer. Subsequently, the base fabric obtained in Preparation Example 3 was laminated on the hot melt adhesive layer with the brushed surface facing upwards, and pressed with a roller heated to about 150 ° C. to prepare a fabric for a mobile device protective cover.

Production Example 7

A solution-type polyurethane hot melt adhesive (composition: 35 wt% polyurethane resin, 58.5% methyl ethyl ketone) product name: SMTHANE SMT-35; supplier: Smatech Co., Korea. Dry to form a hotmelt adhesive layer. Subsequently, the base fabric obtained in Preparation Example 4 was laminated on the hot melt adhesive layer with the brushed surface facing upwards and pressed with a roller heated to about 150 ° C. to prepare a fabric for a mobile device protective cover.

Production Example 8

A solution type acrylic pressure-sensitive adhesive (product name: DS-7250; supplier: Deoksan, Korea) was applied to the release paper at a thickness of about 70 μm and dried at about 120 ° C. to form a pressure-sensitive adhesive layer. Thereafter, the PET film was laminated on the pressure-sensitive adhesive layer and pressed with a roller to prepare a primary fabric in which a release paper and a PET film were laminated by the pressure-sensitive adhesive layer. At this time, the solution-type acrylic pressure-sensitive adhesive is composed of 49 to 51% by weight of acrylic ester copolymer (CAS registration number: 35239-19-1), 10 to 20% by weight of toluene and 25 to 35% by weight of ethyl acetate. Then, a solution-type polyurethane hot melt adhesive (composition: 35% by weight of polyurethane resin, 58.5% of methyl ethyl ketone) product name: SMTHANE SMT-35; supplier: Sematech Co., Ltd., Korea, was formed on a PET film of primary fabric. It was applied to a thickness and dried to about 100 ℃ to form a hot melt adhesive layer. Subsequently, the base fabric obtained in Preparation Example 4 was laminated on the hot melt adhesive layer with the brushed surface facing upwards and pressed with a roller heated to about 150 ° C. to prepare a fabric for a mobile device protective cover.

Comparative Preparation Example 3.

A solution-type polyurethane hot melt adhesive (composition: 35 wt% polyurethane resin, 58.5% methyl ethyl ketone) product name: SMTHANE SMT-35; supplier: Smatech Co., Korea. Dry to form a hotmelt adhesive layer. Thereafter, the base fabric obtained in Comparative Preparation Example 2 was laminated on the hot melt adhesive layer and pressed with a roller heated to about 150 ° C. to prepare a fabric for a mobile device protective cover.

Comparative Preparation Example 4.

A solution-type polyurethane hot melt adhesive (composition: 35 wt% polyurethane resin, 58.5% methyl ethyl ketone) product name: SMTHANE SMT-35; supplier: Smatech Co., Korea. Dry to form a hotmelt adhesive layer. Thereafter, the dough fabric obtained in Comparative Preparation Example 1 was laminated on the hot melt adhesive layer and pressed with a roller heated to about 150 ° C. to prepare a fabric for a mobile device protective cover.

4. Evaluation of physical properties of base fabric and mobile device protective cover fabric

(1) antimicrobial test

Dough fabric prepared in Preparation Example 1, Preparation Example 2 and Comparative Preparation Example 1, base fabric obtained in Preparation Example 3, Preparation Example 4 and Comparative Preparation Example 2, mobile device protective cover obtained in Preparation Example 5 to Preparation Example 8 The antimicrobial test of the fabric for the mobile device protective cover obtained in Comparative Fabrication Example 3, Comparative Preparation Example 3 and Comparative Preparation Example 4 was performed by SGS Korea, an international testing institute. Antimicrobial activity of the fabric was measured according to AATCC 100-2004, and the results are shown in Table 1 below. In Table 1 below, the initial inoculation concentrations of the test bacteria were 2.7 × 10 ⁵ CFU for Staphylococcus aureus ATCC 6538, 3.1 × 10 ⁵ CFU for Klebsiella pneumoniae ATCC 4352, and 2.9 × 10 ⁵ CFU for Escherichia coli ATCC 8739.

Fabric division Increase after 24 hours of inoculation Staphylococcus aureus ATCC 6538 (Staphylococcus aureus) Klebsiella pneumoniae ATCC 4352 Escherichia coli ATCC 8739 (E. coli) Production Example 1 45 times increase 46x increase 50x increase Production Example 2 32x increase 33x increase 41x increase Comparative Preparation Example 1 47x increase 49 times increase 51x increase Production Example 3 More than 99.9% More than 99.9% More than 99.9% Production Example 4 More than 99.9% More than 99.9% More than 99.9% Comparative Production Example 2 85% reduction 88% reduction 89% reduction Production Example 5 More than 99.9% More than 99.9% More than 99.9% Production Example 6 More than 99% reduction More than 99% reduction More than 99% reduction Production Example 7 More than 99.9% More than 99.9% More than 99.9% Production Example 8 More than 99% reduction More than 99% reduction More than 99% reduction Comparative Production Example 3 84% reduction 86% reduction 88% reduction Comparative Production Example 4 40x increase 43x increase 45 times increase

(2) weather resistance test

The weather resistance of the base fabric obtained in Preparation Example 3, Preparation Example 4, and Comparative Production Example 2 was evaluated as the light fastness of the fabric. Daylight fastness of the fabric was measured according to KS K ISO 105-B02, and the larger the value, the better the daylight fastness. Table 2 shows the results of measuring daylight fastness of the fabric.

Fabric division Daylight Fastness (Grade) Production Example 3 4 Production Example 4 5 Comparative Production Example 2 3

(3) dimensional stability test

Dough fabric prepared in Preparation Example 1, Preparation Example 2 and Comparative Preparation Example 1, base fabric obtained in Preparation Example 3, Preparation Example 4 and Comparative Preparation Example 2, mobile device protective cover obtained in Preparation Example 5 to Preparation Example 8 Fabric for mobile device protective cover obtained in Comparative Fabrication Example 3 and Comparative Production Example 3 and Comparative Production Example 4 were cut into 300 mm x 300 mm, respectively, to prepare a test piece, and then stored in a hot air dryer at about 60 ° C. The change in length was observed and the dimensional stability was evaluated by calculating the following dimensional change rate.

% Change in dimension = (length before change-length after change) × 100 / length before change

The dimensional stability evaluation results are shown in Table 3 below.

Fabric division % Change in dimension after 24 days Production Example 1 1.51% Production Example 2 0.94% Comparative Preparation Example 1 1.37% Production Example 3 1.32% Production Example 4 0.88% Comparative Production Example 2 1.24% Production Example 5 0.57% Production Example 6 0.34% Production Example 7 0.37% Production Example 8 0.21% Comparative Production Example 3 0.51% Comparative Production Example 4 0.98%

(4) scratch resistance test

The test piece was prepared from the fabric for mobile device protective cover obtained in Production Examples 5 to 8, the fabric for mobile device protective cover obtained in Comparative Production Example 3 and Comparative Production Example 4, and rubbed 10 times with the LCD screen of the smartphone. It caused friction and visually observed whether scratches occurred in the liquid crystal display. As a result, the fabric for mobile device protective cover obtained in Production Examples 5 to 8 did not generate scratches, but the fabric for mobile device protective cover obtained in Comparative Production Examples 3 and 4 produced scratches.

5. Manufacture of mobile device protective cover

Production Example 9

The mobile device protective cover was manufactured by removing the release paper of the fabric for mobile device protective cover prepared in Preparation Example 5, laminating a hot melt adhesive layer on one surface of the epoxy plate, and pressing the same at about 110 ° C. for 10 seconds. Visual inspection showed good adhesion.

Production Example 10.

After removing the release paper of the fabric for mobile device protective cover prepared in Preparation Example 8, the pressure-sensitive adhesive layer was laminated on one surface of the epoxy plate and pressed for about 10 seconds to prepare a mobile device protective cover. Visual inspection showed good adhesion.

Although the present invention has been described through the above embodiments as described above, the present invention is not necessarily limited thereto, and various modifications can be made without departing from the scope and spirit of the present invention. Accordingly, the scope of protection of the present invention is not limited to the specific embodiments but should be construed as including all embodiments belonging to the claims attached hereto.

110, 210: base fabric 120: hot melt adhesive layer 130, 230: release paper
220: second adhesive layer 240: polyester film 250: first adhesive layer

Claims (17)

A base fabric comprising a dough fabric selected from one side brushed fabric or one side brushed fabric and an antimicrobial layer formed on one or both sides of the dough fabric; And
It includes a hot melt adhesive layer formed on the other side of the brushed one side of both sides of the base fabric,
The antimicrobial layer is an antimicrobial fabric for mobile device protective cover, characterized in that consisting of a polyvalent metal salt of pyrithione.
The antimicrobial fabric for a mobile device protective cover according to claim 1, wherein the dough is a tricot made of polyester yarn.
The antimicrobial fabric for a mobile device protective cover according to claim 2, wherein the dough fabric is a tricoat impregnated with a polyurethane foam.
The antimicrobial fabric for a mobile device protective cover according to claim 3, wherein the impregnation amount of the polyurethane foam is 10 to 25 parts by weight per 100 parts by weight of the tricoat.
The polyvalent metal salt of pyrithione is selected from the group consisting of magnesium pyrithione, barium pyrithione, bismuth pyrithione, strontium pyrithione, copper pyrithione, zinc pyrithione, cadmium pyrithione and copper pyrithione. Antimicrobial fabric for mobile device protective cover, characterized in that composed of one or more.
The antimicrobial fabric for mobile device protective cover according to claim 1, wherein the hot melt adhesive is a polyurethane hot melt adhesive.
The antimicrobial fabric for a mobile device protective cover according to any one of claims 1 to 6, further comprising a release paper laminated with the base fabric by the hot melt adhesive layer.
A base fabric comprising a dough fabric selected from one side brushed fabric or one side brushed fabric and an antimicrobial layer formed on one or both sides of the dough fabric;
A first adhesive layer formed on the other surface of one surface of the base fabric of the both surfaces of the base fabric;
A polyester film laminated with a base fabric by the first adhesive layer; And
A second adhesive layer formed on one surface of the polyester film,
The antimicrobial layer is composed of a polyvalent metal salt of pyrithione,
The first adhesive is a hot melt adhesive,
And said second adhesive is a hot melt adhesive or a pressure sensitive adhesive.
9. The antimicrobial fabric for mobile device protective cover according to claim 8, wherein the dough fabric is a tricoat made of polyester yarn.
The antimicrobial fabric for a mobile device protective cover according to claim 9, wherein the dough fabric is a tricoat impregnated with a polyurethane foam.
The antimicrobial fabric for mobile device protective cover according to claim 10, wherein the impregnation amount of the polyurethane foam is 10 to 25 parts by weight per 100 parts by weight of the tricoat.
The polyvalent metal salt of pyrithione is selected from the group consisting of magnesium pyrithione, barium pyrithione, bismuth pyrithione, strontium pyrithione, copper pyrithione, zinc pyrithione, cadmium pyrithione and copper pyrithione. Antimicrobial fabric for mobile device protective cover, characterized in that composed of one or more.
The antimicrobial fabric for a mobile device protective cover according to claim 8, wherein the first adhesive is a polyurethane-based hot melt adhesive.
The antimicrobial fabric for mobile device protective cover according to claim 8, wherein the second adhesive is a polyurethane-based hot melt adhesive.
The antimicrobial fabric for a mobile device protective cover according to claim 8, wherein the second adhesive is an acrylic pressure-sensitive adhesive.
The method of claim 15, wherein the acrylic pressure-sensitive adhesive is a composition comprising an acrylic ester copolymer and ethyl acetate, the monomers constituting the acrylic ester copolymer is acrylic acid, butyl acrylate, ethenyl acetate and 2-ethylhexyl acrylic Antibacterial fabric for mobile device protective cover, characterized in that the rate.
The antimicrobial fabric for a mobile device protective cover according to any one of claims 8 to 16, further comprising a release paper laminated with a polyester film by the second adhesive layer.

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