A Strapless, Backless, Seamless One Piece Bra without Waterproofing And Manufacturing Method Thereof

Abstract

Disclosed is a strapless backless seamless adhesive brassiere without waterproofing and a manufacturing method thereof, in which an inner layer, an intermediate layer and an outer layer are sequentially laminated, adhered together using an adhesive agent, heat-pressed in a one-piece form, and then cut in a shape of brassiere cups and an adhesive region using ultrasonic waves, after which adhesiveness is applied only to the adhesive region of the brassiere other than brassiere cups to attach the brassiere to the skin of a wearer, wherein the adhesive layer uniformly infiltrates to a depth of about ½ of the thickness of the intermediate layer through the inner layer and is securely fixed using a solidification process through rapid cooling or high-temperature treatment. A dam is formed at an edge of the adhesive layer so that the adhesive layer is neither shoved nor squashed by external force, or an adhesive surface requiring adhesiveness is provided in a discontinuous form including a net or lattice form so as to ensure air permeability.

1 . A strapless backless seamless adhesive brassiere without waterproofing, comprising an adhesive layer so that the brassiere is directly attached to a skin of a wearer without shoulder and back straps, wherein the adhesive layer is formed on part or all of an adhesive region of the brassiere, other than brassiere cups shaped to match breasts of the wearer. 
     
     
         2 . The adhesive brassiere according to  claim 1 , wherein the adhesive region comprises a mid portion for connecting a pair of brassiere cups, a breast portion extending from the mid portion to both sides thereof to support and uplift the brassiere cups, and a wing portion extending from the breast portion to both sides thereof to correspond to an underarm area of the wearer, and the adhesive layer is formed on at least one selected from among the mid portion, the breast portion and the wing portion. 
     
     
         3 . The adhesive brassiere according to  claim 1  or  2 , wherein the brassiere cups and the adhesive region are provided in a one-piece form, and the brassiere including the brassiere cups and the adhesive region comprises an inner layer, an outer layer, and an intermediate layer disposed between the inner layer and the outer layer. 
     
     
         4 . The adhesive brassiere according to  claim 3 , wherein the inner layer and the outer layer are made of cloth or woven fabric. 
     
     
         5 . The adhesive brassiere according to  claim 4 , wherein the inner layer is made of microfiber fabric having a fiber diameter of 0.01 mm or less and a small cell size so that an adhesive agent for the adhesive layer is not easily absorbed into the brassiere. 
     
     
         6 . The adhesive brassiere according to  claim 5 , wherein the inner layer is made of nylon or polyester woven fabric. 
     
     
         7 . The adhesive brassiere according to  claim 6 , wherein the intermediate layer is made of any one selected from among nonwoven fabric, sponge, and urethane elastic fibers. 
     
     
         8 . The adhesive brassiere according to  claim 3 , wherein the adhesive layer infiltrates part of the intermediate layer through the inner layer as viewed from a cross-section and is securely fixed therein. 
     
     
         9 . The adhesive brassiere according to  claim 8 , wherein the adhesive layer infiltrates to a depth of ½ or less of a thickness of the intermediate layer as viewed from a cross-section and is securely fixed therein. 
     
     
         10 . The adhesive brassiere according to  claim 8 , wherein the adhesive layer comprises an adhesive agent including silicone, acryl, polyolefin or a mixture thereof, each of which is solidified through rapid cooling or high-temperature treatment depending on properties thereof. 
     
     
         11 . The adhesive brassiere according to  claim 10 , wherein a polyolefin adhesive agent uniformly infiltrates to a predetermined depth and is securely fixed using a solidification process through cooling, and the solidification process through cooling is conducted by performing rapid cooling immediately after the adhesive agent dissolved at a high temperature is applied into the inner layer and the intermediate layer, without using TPU or additional waterproofing, thus solidifying the adhesive agent. 
     
     
         12 . The adhesive brassiere according to  claim 8 , wherein the adhesive layer is made of a silicone adhesive agent, and the adhesive agent is solidified through high-temperature treatment. 
     
     
         13 . The adhesive brassiere according to  claim 11 , wherein a dam having a width of 1˜5 mm and a height of 0.3˜2 mm is formed at an edge of the adhesive layer so that the adhesive layer applied to the brassiere is not deformed. 
     
     
         14 . The adhesive brassiere according to  claim 13 , wherein the dam is made of a synthetic resin including silicone, acryl or polyolefin, which is a same component as that of the adhesive layer but has no adhesive component, and has a density greater than that of the adhesive layer so as to have strength not less than that of the adhesive layer. 
     
     
         15 . The adhesive brassiere according to  claim 13 , wherein the dam is formed using a solidification process through rapid cooling or using a solidification process through high-temperature treatment depending on properties of the synthetic resin. 
     
     
         16 . The adhesive brassiere according to  claim 11 , wherein the adhesive layer is provided in a form of an air permeable adhesive layer which is securely fixed in a linear form including a net form or a lattice form onto a surface requiring adhesiveness in order to ensure air permeability. 
     
     
         17 . The adhesive brassiere according to  claim 16 , wherein the air permeable adhesive layer is formed inside the dam having a decorative figure or letter shape. 
     
     
         18 . A method of manufacturing a strapless backless seamless adhesive brassiere without a need for waterproofing, the method comprising:
 sequentially laminating an inner layer, an intermediate layer, and an outer layer using an adhesive agent, thus forming a brassiere fabric sheet   pressing the brassiere fabric sheet at a high temperature, thus processing the brassiere fabric sheet into a one-piece form and   fusing and cutting the processed brassiere fabric sheet using ultrasonic waves, thus completing the brassiere having brassiere cups shaped to match a breast shape and an adhesive region to be attached to a skin of a wearer.   
     
     
         19 . The method according to  claim 18 , further comprising forming an adhesive layer on part or all of the adhesive region of the brassiere. 
     
     
         20 . The method according to  claim 19 , wherein the forming the adhesive layer is conducted using a solidification process through rapid cooling or using a solidification process through high-temperature treatment so that the adhesive layer infiltrates to a predetermined depth of the intermediate layer through the inner layer and is securely fixed therein. 
     
     
         21 . The method according to  claim 20 , wherein the solidification process through rapid cooling is conducted by performing rapid cooling immediately after an adhesive agent dissolved at a high temperature is applied into the inner layer and the intermediate layer, without a need for additional waterproofing, and the solidification process through high-temperature treatment is conducted by heating an adhesive agent in a liquid phase from room temperature to a high temperature and solidifying the adhesive agent. 
     
     
         22 . The method according to  claim 21 , wherein the inner layer is made of nylon or polyester microfiber fabric having a small cell size such that the adhesive agent for the adhesive layer is not easily absorbed into the brassiere. 
     
     
         23 . The method according to  claim 21 , wherein the intermediate layer is made of nonwoven fabric or sponge. 
     
     
         24 . The method according to  claim 21 , wherein the adhesive layer is made of an adhesive agent including silicone, acryl or polyolefin. 
     
     
         25 . The method according to  claim 19 , further comprising forming a dam at a portion corresponding to an edge of the adhesive layer so that the adhesive layer is not shoved by external force, before forming the adhesive layer. 
     
     
         26 . The method according to  claim 25 , wherein the dam is made of a synthetic resin including silicone, acryl or polyolefin, has strength not less than that of the adhesive layer, and is securely fixed through rapid cooling or high-temperature treatment. 
     
     
         27 . The method according to  claim 19 , wherein the forming the adhesive layer is conducted by forming an air permeable adhesive layer in a linear form on a surface requiring adhesiveness so as to ensure air permeability and then subjecting the adhesive layer in a linear form to solidification through rapid cooling or high-temperature treatment so that the adhesive layer infiltrates to a predetermined depth and a predetermined width of the intermediate layer through the inner layer and is securely fixed therein. 
     
     
         28 . The method according to  claim 27 , wherein the air permeable adhesive layer is securely fixed in a linear intersection form, including a net form or a lattice form. 
     
     
         29 . The method according to  claim 28 , wherein the air permeable adhesive layer is formed inside the dam having a decorative figure or letter shape. 
     
     
         30 . The method according to  claim 27 , wherein the forming the adhesive layer or the forming the dam is conducted through a liquid crystal dispensing process for dispensing an adhesive agent in a liquid crystal state using a nozzle for dispensing liquid crystals, and then a liquid crystal cooling process for rapidly cooling liquid crystals of the adhesive agent immediately after being dispensed using a nozzle for cooling liquid crystals which is disposed adjacent to the nozzle for dispensing liquid, crystals so that a direction of movement of the nozzle for dispensing liquid crystals coincides with a direction of movement of the nozzle for cooling liquid crystals. 
     
     
         31 . A strapless backless seamless adhesive brassiere without waterproofing, comprising an adhesive layer so that the brassiere is directly attached to a skin of a wearer without shoulder and back straps, wherein the adhesive layer is formed on an adhesive region of the brassiere other than brassiere cups so that the adhesive layer is not directly attached to breasts of the wearer which are a most sensitive body portion of a woman, the brassiere including the brassiere cups and the adhesive region is made of woven fabric in order to ensure air permeability throughout the brassiere, and the brassiere cups and the adhesive region are provided in a one-piece form. 
     
     
         32 . The adhesive brassiere according to  claim 31 , wherein the adhesive layer is directly formed on the woven fabric without waterproofing, and, in order to control flowability of a resin including silicone, acryl or polyolefin in a liquid crystal state applied on the woven fabric, the liquid crystals are solidified and securely fixed through rapid cooling within 1˜2 sec immediately after being dispensed. 
     
     
         33 . The adhesive brassiere according to  claim 32 , wherein the woven fabric is made of nylon or polyester microfibers having a diameter of 0.01 mm or less, and a particle size of the resin is not smaller than the fiber diameter of the woven fabric, in order to control a speed for passing the resin through the woven fabric. 
     
     
         34 . The adhesive brassiere according to  claim 33 , wherein the adhesive layer is provided in a linear form, including a net form or a lattice form, so as not to reduce air permeability due to the adhesive layer. 
     
     
         35 . The adhesive brassiere according to  claim 34 , wherein a dam having a width of 1˜5 mm and a height of 0.3˜2 mm is formed at an edge of the adhesive layer using a resin including silicone, acryl or polyolefin having a density greater than that of the adhesive layer, in order to prevent the adhesive layer from being shoved or squashed. 
     
     
         36 . A method of manufacturing a strapless backless seamless adhesive brassiere without a need for waterproofing, which is made of a woven fabric to ensure air permeability and comprises an adhesive layer without shoulder and back straps, the method comprising forming the adhesive layer through a liquid crystal dispensing process, the liquid crystal dispensing process including dispensing liquid crystals of an adhesive agent for the adhesive layer using a nozzle for dispensing liquid crystals so that the liquid crystals are applied on the woven fabric. 
     
     
         37 . The method according to  claim 36 , further comprising performing a liquid crystal cooling process for rapidly cooling the liquid crystals immediately after being dispensed using a nozzle for cooling liquid crystals which is disposed adjacent to the nozzle for dispensing liquid crystals so that a direction of movement of the nozzle for dispensing liquid crystals coincides with a direction of movement of the nozzle for cooling liquid crystals, in order to securely fix and solidify the dispensed liquid crystals without waterproofing the woven fabric. 
     
     
         38 . The method according to  claim 37 , wherein the liquid crystal dispensing process comprises dissolving a polyolefin resin at a high temperature, thus forming liquid crystals, supplying the liquid crystals through pumping into the nozzle for dispensing liquid crystals, dispensing the liquid crystals from the nozzle for dispensing liquid crystals while a position thereof is set using an infrared point sensor, and then forming a predetermined line using, a computer program. 
     
     
         39 . The method according to  claim 38 , wherein a speed for cooling the liquid crystals is determined by a distance between the nozzle for cooling liquid crystals and the nozzle for dispensing liquid crystals and by a speed of movement of the nozzle, and a temporal interval between dispensing of liquid crystals and cooling of liquid crystals does not exceed 2 sec. 
     
     
         40 . A method of manufacturing a strapless backless seamless adhesive brassiere without a need for waterproofing, which is made of a woven fabric to ensure air permeability and comprises an adhesive layer without shoulder and back straps, the method comprising forming the adhesive layer through a transfer process, the transfer process including attaching an adhesive agent composed of a silicone resin on a release paper, bringing the release paper into close contact with the woven fabric so that the adhesive agent of the release paper and the woven fabric face each other, performing pressing while applying heat to a surface of the release paper opposite a surface on which the adhesive agent is applied, and absorbing the adhesive agent into the woven fabric to thus solidify and securely fix the adhesive agent.