JPS635517B2 - - Google Patents

Description

[Detailed description of the invention]

[Industrial Field of Application] The present invention relates to a novel method for manufacturing cloth coated with an adhesive. [Prior Art] Hot melt adhesives are currently used in the form of adhesive interlining in the production process of clothing and the like. Adhesive interlining is made by applying powdered hot melt adhesive randomly or in a fixed dot pattern onto a continuous interlining material using a gravure coater, or by dispersing powdered hot melt adhesive in a viscous aqueous solution and pasting it. It can be applied with a cylindrical screen coater, or a powdered adhesive can be applied using Coulomb force as disclosed in Japanese Patent Publication No. 57-42113, and then heat can be applied to bond the interlining material and the powdered adhesive. Many are used that are made by fusing agents together. [Problems to be solved by the invention] Adhesive interlining is a product in which adhesive is fused to the entire surface of a continuous cloth, whether in a random pattern or in a fixed dot pattern, and the adhesive interlining is required in a sewing factory. The fabric is cut into a desired shape, aligned to the required part of the fabric that makes up the garment, tacked, and bonded together by heat and pressure to provide shape-retaining functionality. However, in the sewing and assembly process, the necessary amount of adhesive is applied to the required parts of the cloth cut into various shapes in the desired shape, giving it a shape-retaining function similar to interlining, or the cut cloth is folded. There is a strong desire to automate the garment assembly process by omitting the conventional manual processes such as basting and lock stitching through adhesive processing such as gluing or superimposing the cut fabric and other cut fabrics. The emergence of a method for applying adhesive directly to fabrics and bonding them without using adhesive interlining is awaited. [Means for Solving the Problems] As a result of intensive study by the present inventors on a method for manufacturing adhesive cloth suitable for such requirements, the following method, which is an application of the method of Ukeden screen printing, is superior. This discovery led to the completion of the present invention. That is, in the present invention, a cloth is interposed between a conductive screen having a large number of holes corresponding to a desired adhesive application pattern and a counter electrode, and a DC voltage is applied between the conductive screen and the counter electrode. An electric field is formed, and the powdered adhesive is caused to pass through the apertures of the conductive screen in the direction of the counter electrode by Coulomb force, and is deposited on the cloth in the desired adhesive application pattern. Then, in a method of fixing the powdered adhesive by applying heat to the adhesive, contacting the adhesive with solvent vapor, or further applying pressure, the cloth is brought into close contact with the counter electrode by the wetting force of the liquid or the negative pressure of the air. The present invention provides a method for manufacturing a cloth coated with an adhesive, which comprises fixing or closely fixing the cloth on a pallet, and then placing the pallet on a counter electrode. Further, in the above method, the present invention provides a folded adhesive structure or a stacked adhesive structure characterized in that after fixing the powdered adhesive to the cloth, the cloth is folded or another cloth is superimposed on the cloth and bonded under heat and pressure. The present invention provides a method for manufacturing an adhesive cloth having a laminated adhesive structure. Furthermore, the present invention provides an adhesive fabric with excellent ironing resistance, washing resistance, dry cleaning resistance, and texture, which is characterized in that a crosslinked polymer is used as the resin constituting the powder adhesive in the above method. The present invention provides a method for manufacturing. In the present invention, Japanese Patent Publication No. 42-14342, Japanese Patent Publication No. 14342, No. 45-
Powdered adhesive is applied onto the cloth using the principle of electrostatic screen printing disclosed in the 25650 publications. In this method, first, a conductive screen is prepared with a large number of openings corresponding to the desired adhesive application pattern. Methods for making such a conductive screen include making holes in a conductive thin plate of stainless steel, copper, brass, iron, aluminum, etc. in a predetermined pattern in a continuous or dotted manner, and making a mesh made of conductive material. You can either cover the unnecessary holes in the screen with resin or the like and leave only the holes in the specified pattern, or you can attach a photosensitive film to the mesh screen and expose and develop the specified pattern to make holes in the necessary areas. There are ways to make it open. Electrodes are placed opposite the conductive screen thus obtained, and a cloth to which the adhesive is to be applied is interposed between them. With the electrode grounded, apply a negative potential to the conductive screen if the adhesive is negatively charged depending on the charging characteristics of the powdered adhesive, and vice versa if the adhesive is positively charged. Apply a positive potential to the screen. If the DC voltage is too low, the applied pattern of the powdered adhesive may become unclear, or the applied amount may be insufficient, making it impossible to obtain sufficient adhesive force. On the other hand, if the temperature is too high, discharge may occur between the conductive screen and the counter electrode, or the cloth may be attracted to the conductive screen, making it impossible to properly apply the adhesive. The appropriate voltage varies depending on the distance between the screen and the counter electrode, the humidity, the volume resistance of the cloth, the fluff of the cloth, and the amount of charge of the adhesive, but -1 to 10 kV/cm or +1 to +10 kV/cm, more preferably - 2～-
8 kV/cm or a range of +2 to +8 kV/cm is suitable. If a cloth is interposed between the screen and the counter electrode and a high DC voltage is applied, the cloth itself may become polarized and be drawn toward the screen as described above. As a result of various studies to avoid this situation, we found that either the cloth was tightly fixed on the counter electrode using the wetting force of the liquid or the negative pressure of the air, or the cloth was tightly fixed on the pallet and then the pallet was placed on the counter electrode. We have found that it is effective to place The following three methods are particularly effective for cutting cloth in a high-mix, low-volume production process. (i) Wet the counter electrode with liquid, place a cloth on top of it, and hold the cloth from above to tightly fix it to the counter electrode. (ii) A large number of holes are provided in the counter electrode and the cloth is tightly fixed to the electrode by suction from the back side. (iii) Apply the method (i) to the cloth fixing pallet and place the pallet at a predetermined position on the counter electrode. The pallets used in the present invention are preferably made of metal or non-metal and have a highly rigid plate-like structure with a thickness of 5 mm or less. The liquid used in method (i) may be anything, including water, alcohol, trichlorethylene, tetrachlorethylene, methylene chloride, etc., as long as it can be easily dried and removed without damaging the fabric or its color pattern. . To wet the counter electrode, the liquid can be applied by spraying, brushing, or using a roll coater. Alternatively, liquid vapor may be sprayed. A cloth is placed on top of the cloth and pressurized with a roller, press, compressed air, etc. to tightly fix the cloth to the counter electrode. In method (ii), a mesh-like conductive material is used as the counter electrode, or a large number of holes are made in the conductive material mechanically, chemically, or by using a thermal energy beam such as a laser beam. Alternatively, porous sintered metal or the like may be used. By applying weak suction from the back side of the porous counter electrode, the cloth is closely fixed to the electrode. If the cloth has a dense structure, the powdered adhesive will remain on the cloth and will not be sucked into the suction port. In order to increase suction efficiency, the positions of the holes provided in the counter electrode are localized, and a suction circuit is provided for each localized hole on the back side of the counter electrode.The position of the cloth is detected and only the part of the cloth is suctioned. A valve mechanism can also be installed to apply force. In order to minimize the unevenness of the cloth caused by suction, the diameter of the suction hole is preferably 1 mm or less. If a cloth is simply placed on the counter electrode, the voltage will be approximately 3 to 4 kV/
The cloth is attracted to the screen electrode with a voltage of cm, but if methods (i) to (iii) are applied, in each case about
The cloth remains in close contact with the ground electrode until the voltage reaches 8 kV/cm or more, making it possible to apply powdered adhesive onto the cloth in the desired shape with high precision. If the shape of the cloth is fixed, hold the edge of the cloth with a jig while applying tension, fix it to the counter electrode with single-sided or double-sided adhesive tape, or attach the uncoated part to the counter electrode with a magnetic sheet. A method of magnetically fixing is also effective. In order to apply the adhesive to a predetermined location on the fabric, the application pattern on the conductive screen must be accurately aligned with the adhesive application position on the fabric. Positioning is performed by moving the opposing electrode or pallet to which the screen and/or cloth is fixed. A visual sensor and/or a tactile sensor detect the position, shape, presence of wrinkles, turned edges, etc. of the cloth, and after correcting the disordered cloth and correcting its orientation using a cloth gripping device, it is placed correctly on the counter electrode or pallet, and the belt is lifted. , a chain, a hanger, a lifting table, an XY table, a rotary table, a manipulator, etc., so that the counter electrode or pallet and the conductive screen are opposed to each other at a predetermined position. In the present invention, the powder adhesive is applied and fixed by a known method. Powdered adhesives may absorb moisture, resulting in a decrease in volume resistance or fluidity of the powder, or in the case of wet crosslinking adhesives, the crosslinking reaction progresses, resulting in poor melt fluidity or dissolution during fixing or bonding. In order to prevent fluidity from decreasing, it is used in a hopper or cartridge with a closed structure or a structure in which air is replaced with a dry atmosphere such as nitrogen or carbon dioxide gas. The powdered adhesive that has fallen from the powder drop hole in the bottom of the hopper or cartridge is imprinted onto the screen surface by an imprinting brush made of an insulating material. The powdered adhesive imprinted on the screen has a positive or negative charge applied to the screen, moves toward the counter electrode by Coulomb force, and forms the predetermined shape of the many openings provided on the screen. Therefore, it adheres to the fabric. The amount of adhesive applied can be adjusted by the powder supply rate from the hopper or cartridge, the imprinting speed of the imprinting brush, the number of imprintings, the voltage between the screen and the counter electrode, and the volume resistance of the fabric. The faster the powder supply rate and the imprinting speed of the imprinting brush, the greater the number of times of imprinting, the higher the voltage, and the lower the volume resistance of the cloth, the more adhesive can be applied. The amount of application can also be adjusted by adjusting the particle size, fluidity, and charging characteristics of the powder adhesive. Unlike printing, when applying adhesive for the purpose of replacing the interlining function and gluing cloth for the purpose of replacing sewing, if the amount of adhesive applied is too small, satisfactory shape retention and adhesive strength may not be obtained. do not have. In the method of the present invention, there are areas on the fabric that are coated with adhesive and areas that are not coated with adhesive. Looking only at the part to which the adhesive is applied, if the purpose is to serve as a substitute for interlining, the area of each adhesive applied should be 9 mm ² or less, more preferably 2 mm ² or less, and the amount applied should be 1 × 10 ^-5 g/ ^mm2 (10
g/m ² ) or more, and it is desirable to apply the adhesive in the form of many dots, lines, or grids. When the purpose is to bond fabrics together, the adhesive application width should be 3 mm or less, more preferably 1.5 mm or less,
It is desirable that the coating amount be 5×10 ⁻⁵ g/mm ² (50 g/m ² ) or more. After electrostatically applying a predetermined amount of powdered adhesive onto a cloth in a predetermined shape, the cloth is moved together with the counter electrode, or the cloth is moved together with the fixed cloth pallet, heated with an electric furnace or infrared heater, or separated. The adhesive is fixed on the fabric by heat-pressing using a heated roller or press treated with a molding agent. Alternatively, the adhesive is fixed on the fabric by vaporizing and spraying a solvent that dissolves the adhesive. If the purpose is to serve as a substitute for interlining, apply powdered adhesive to the back side of the fabric and fix it. When adhering folded parts and overlapping parts, a powdered adhesive is applied and fixed on the back or front side of the fabric depending on the application site. In this case, the fabrics are bonded while or after the fabrics are folded, or by heat-pressing while or after the fabrics are overlapped. The cloth used in the present invention includes cotton, wool, linen,
silk, rayon, di- or triacetate, acrylic, nylon, polyester, polypropylene,
Woven fabrics made from polyethylene or other natural or synthetic fiber materials, either alone or in combination;
Refers to non-woven and knitted fabrics. It is also possible to use other nonwoven fabrics made of inorganic materials such as glass fibers. The adhesive used in the present invention is in the form of a powder, and its particle size is preferably 5 to 500μ, more preferably 10 to 250μ. If the particle size is too small, fine powder will scatter on the fabric other than the glue margin during electrostatic coating, staining the fabric, causing unnecessary adhesion, worsening workability, and increasing the coating thickness. If it is too thick, it may collapse before fixing and disturb the coating pattern, which is undesirable. If the particle size is too large, it becomes difficult to apply a fine pattern, and the accuracy of coating fine lines or minute dots deteriorates, so it is unsuitable. The resin constituting the powder adhesive used in the present invention is a thermoplastic resin with a softening point of 80 to 160°C, and a melt viscosity of 10 ⁴ to 10 ⁹ cps measured at a temperature 10°C higher than the softening point. , more preferably 10 ⁵
Preferably ~ ¹⁰⁸ cps. The softening point in the present invention is a value measured in silicone oil at a heating rate of 5° C. per minute by the ring and ball method according to JIS K2817. If the softening point is too low, the fluidity of the powder at ordinary temperatures will be poor, and blocking will occur during storage, which is undesirable. If the softening point is too high, when fixing the adhesive to the fabric or bonding the fabrics together using heat, it is necessary to raise the temperature to a higher temperature, which may cause shrinkage or damage to the fabric, which is not preferable.
Furthermore, even when fixing an adhesive to cloth by spraying solvent vapor, adhesives with a high softening point are not preferred because they have poor solubility in solvents. When thermocompression-bonding a powdered adhesive electrostatically applied to cloth, it is necessary for the adhesive to permeate into the cloth appropriately in order to increase the adhesive strength. If the melt viscosity of the resin, measured at a temperature 10°C higher than the softening point of the adhesive resin, is too low, its permeability into the fabric will increase, causing the adhesive to ooze out to the back of the fabric, which will not only impair the appearance, but also This is not preferable because the texture is poor and the adhesive strength is also reduced. Further, the adhesive may transfer to the pressure roller or pressure plate, which is not preferable. If the melt viscosity is too high, the permeability of the adhesive into the cloth will be poor, making it impossible to obtain sufficient adhesive strength, which is undesirable. As these resins having thermofluidic properties and excellent adhesives for cloth, those having at least one amide bond, ester bond, or urethane bond in the molecular chain are suitable. In particular, polyamide resins, polyester resins, polyesteramide resins, and urethane-modified resins thereof are preferably used. As the polyamide resin, nylon 12 and copolymerized nylon obtained by copolymerizing various dicarboxylic acids, diamines, and lactams are used. Examples of dicarboxylic acids include resinous dicarboxylic acids having 6 to 12 carbon atoms such as adipic acid, β-methyladipic acid, pimelic acid, corkic acid, azelaic acid, sebacic acid, nonanedicarboxylic acid, decanedicarboxylic acid, and dodecanedicarboxylic acid; Dimer acid mainly composed of 36 dicarboxylic acids, terminally carboxylated 1,
End-carboxylated liquid rubbers such as 2-polybutadiene and terminally carboxylated hydrogenated 1,2-polybutadiene, and aromatic dicarboxylic acids such as isophthalic acid, phthalic acid and terephthalic acid are used. Also n
-Dodecenylsuccinic acid, isododecenylsuccinic acid, isododecylsuccinic acid, isooctylsuccinic acid, n-octylsuccinic acid, etc. and acid anhydrides thereof can also be used. Examples of diamines include ethylene diamine, propylene diamine, 1,2-diaminopropane, tetramethylene diamine, piperazine, pentamethylene diamine, hexamethylene diamine, 1,7-diaminoheptane, 1,8-diaminooctane,
Aliphatic and alicyclic diamines such as 1,9-diaminononane, 1,10-diaminodecane, and polyethylene glycol diamine with a molecular weight of 300 to 2000 and aminated at both ends are used. As a lactam, ε-
Lactams with 6 to 12 carbon atoms such as caprolactam, ω-laurolactam, or their ring-opened ω-
Amino acids are used. Polyester resins include aromatic polybasic acids such as terephthalic acid, isophthalic acid, phthalic acid, trimellitic acid, adipic acid, sebacic acid, azelaic acid, decanedicarboxylic acid, fumaric acid, itaconic acid, cyclohexyldicarboxylic acid, dimer acid, etc. An acid component such as an aliphatic or alicyclic polybasic acid,
ethylene glycol, diethylene glycol,
Addition of 2 to 18 moles of ethylene oxide or propylene oxide to 1,4-butanediol, 1,6-hexanediol, aliphatic polyols such as polyethylene glycol, polypropylene glycol, and polytetramethylene glycol with a molecular weight of 200 to 2000, and bisphenol A. A copolymerized polyester obtained by polycondensing aromatic polyols formed by the following with a selected polyol component is used. Polyesteramide resins include random copolymers obtained by polycondensing the above-mentioned polyamide raw materials and polyester raw materials, and those obtained by mixing and melting separately synthesized polyester resins and polyamide resins to cause an esteramide exchange reaction. Partially blocked copolymers and block copolymers obtained by bonding polyester resins and polyamide resins with diisocyanate compounds such as toluene diisocyanate, hexamethylene diisocyanate, isophorone diisocyanate, and methylene bisphenyl diisocyanate are used. Other polyethylene, ethylene-vinyl acetate copolymer, ethylene-ethyl acrylate copolymer,
Ethylene-maleic anhydride copolymer, styrene-
Among copolymerized vinyl polymers such as acrylonitrile-ethyl acrylate copolymer and plasticized polyvinyl chloride resins to which a plasticizer is added, those having a softening point and melt viscosity within the above range can be used. Furthermore, by using a resin that has the property of being crosslinked by heat, moisture, or ionizing radiation, the ironing resistance, washing resistance, and dry cleaning resistance after adhesion can be increased. When fabric is bonded using normal thermoplastic resin, the plastic degeneration and melting flow of the resin progress during repeated ironing, resulting in a hard texture, adhesive resin seeping out on the back of the fabric, and adhesive strength. There are drawbacks such as heat resistance, which decreases, and repeated hot water washing and dry cleaning, which causes the adhesive to swell and elute, resulting in a decrease in adhesive strength. In contrast, Type-8-nylon and similar alkoxymethylated polyamides exhibit melt flowability at the initial stage of heating, but eventually undergo condensation and crosslinking. Also, a hydrolyzable organosilicon group represented by the general formula () [R is a hydrocarbon group or a hydrocarbon group containing a different element such as N, O, S, etc., R' is hydrogen, or C ₁ to _{C 4}
a hydrocarbon group, X is a hydrolyzable group (alkoxy group, alkenyloxy group, acyloxy group, aminooxime group, oxime group, etc.), a is an integer of 0 to 2], or an isocyanate group, or a thermally dissociable block When a wet crosslinkable polymer having one or more types of isocyanate groups crosslinkable functional groups at the end or side chain of its molecular chain is used as a resin component constituting an adhesive, it exhibits melt fluidity at the initial stage of heating. , a cross-linked structure is formed by the action of heat and moisture when steam is received during the intermediate press and finishing press used in the sewing process, resulting in heat resistance (iron resistance), washing resistance, and dry cleaning resistance. Excellent performance such as These wet crosslinkable resins are obtained by introducing a hydrolyzable organosilicon compound or polyisocyanate compound into the terminal group or side chain of the aforementioned polyamide resin, polyester resin, polyesteramide resin, copolymer vinyl resin, etc. by polymer reaction. In the case of a polyisocyanate compound, it can be obtained by further adding a blocking agent to the isocyanate, if necessary.
In addition, in the case of copolymerized vinyl resin, a hydrolyzable organosilicon compound having unsaturated double bonds is added during polymerization.
It can also be obtained by radical copolymerization in the absence of water. Resins that can be crosslinked by ionizing radiation are polymers with unsaturated double bonds at the molecular ends, in molecular chains, or in side chains, and include allyl chloride, (meth)acrylic acid, glycidyl (meth)acrylate, isocyanatoethyl (meth) ) It can be obtained by reacting acrylate or the like with the terminal group or side chain of the polymer in the presence of a polymerization inhibitor. In addition, when synthesizing polyamide, polyester, and polyester amide, acids with unsaturated double bonds such as fumaric acid, maleic anhydride, itaconic acid, citraconic acid, or their acid chlorides or acid chlorides are added as raw materials and polycondensed. By doing so, a polymer having unsaturated double bonds in the molecular chain or in the side chain can be obtained. During the synthesis of copolymerized vinyl polymer, 1,
Unsaturated double bonds can also be introduced into the molecular chain or side chain by adding a monomer having a conjugated double bond such as 2-butadiene, 1,3-butadiene, or isoprene. Adhesives containing these unsaturated double bond-containing resins are used to bond cloth using the method described above, and then irradiate ionizing radiation such as electron beams and X-rays from above the cloth in a nitrogen atmosphere. By doing so, it can be crosslinked in a short time and exhibit the same effect as a wet crosslinkable polymer. The method of powdering a resin having the above properties is to dissolve the resin in a solvent, add a non-solvent for the resin while stirring, and cause the resin to precipitate out through phase separation, and then over-separate. Obtained by drying. Alternatively, the resin is cooled to a temperature below the glass transition point, and then collided with a plate with a high-speed air stream, or by impact pulverization with a hammer mill, or mechanically pulverized by placing it between rotating gears to form a fine powder. can be converted into
In either method, since there is a particle size distribution, the particles are classified as necessary and those within a predetermined particle size range are taken out and used. The amount of charge on the powdered adhesive can be controlled by dispersing a charge control agent into the resin powder or attaching it to the surface of the resin powder. For positive charging, aniline dyes and polymers having amino groups are exemplified, and for negative charging, azo chromium complexes and polymers having carboxyl groups are exemplified, but the present invention is not limited thereto. Further, in order to improve the fluidity of the powder, various fluidity improvers such as fine silicon oxide powder and calcium stearate may be added. [Effects of the Invention] Since the adhesive fabric produced by the method of the present invention can apply and fix adhesive in any application pattern, powdered adhesive can be fixed to one side of the fabric to prevent fabric from stretching, give tension, and maintain its properties. Since the interlining functions such as molds can be provided, it is possible to create the interlining in a simple process without having to sew the adhesive interlining, overlapping it in a predetermined position, basting it, and heat-pressing it as required in the past. Alternative functions can be expressed. Alternatively, the adhesive can be applied to the required areas of the fabric and fixed before cutting, or the adhesive can be automatically applied to the required areas of the cut fabric, fixed, and then the fabric is folded or another fabric is layered on top of it. The cloth can be bonded by heat and pressure bonding. There is no need for manual sewing as in the past, and the adhesive can be used to automatically assemble clothes that are strong, soft to the touch, and have excellent ironing resistance, washing resistance, and dry cleaning resistance. EXAMPLES The present invention will be explained in further detail with reference to Examples below. Example 1 (Manufacturing example of adhesive fabric as interlining substitute) Triethoxysilylation of the terminal end of a copolymerized polyester in which each residue of terephthalic acid, adipic acid, ethylene glycol, and diethylene glycol has a molar ratio of 2/1/3/0.4 resin (softening point 130℃,
A powder having a melt viscosity of 244,000 centipoise after preheating at 140° C. for 2 minutes was classified to obtain a powder adhesive having a particle size of 20 to 100 μm. A 20 cm square aluminum plate was sprayed with steam, and a 15 cm square polyester jersey cloth was placed on top of it, and a rubber roller was moved back and forth once to tightly fix the cloth to the aluminum plate. 25 1mm square holes on a 150 mesh wire mesh
cm ² and sealed the unnecessary parts with resin 15
When a cm square conductive screen was placed parallel to the above aluminum plate, the distance between them was 7 mm, the aluminum plate was grounded, and a DC voltage of -5 kV was applied to the conductive screen, the cloth did not lift at all. Spread the above powdered adhesive on the non-perforated areas on the conductive screen, and electrostatically apply the powdered adhesive to the above cloth by slowly moving an imprinting brush made of foamed polyurethane back and forth 1 to 4 times. did. Subsequently, the conductive screen was removed, and the cloth together with the aluminum plate was exposed to chloroform vapor for 1 second, and then the solvent was removed with a vacuum, and the adhesive was fixed on the cloth. 140 for 1 minute after steaming for another 5 minutes
Dry at ℃. Thereafter, the amount of adhesive applied was determined from the difference in weight of the cloth before and after applying the adhesive. 20 pieces of adhesive cloth
After being left in a room at ℃ and 65% humidity for one day, the shear stiffness was measured using the KES method, which is widely known as a method for evaluating the texture of fabrics. The hysteresis loop widths 2HG and _2HG5 were as shown in Table 1.

[Table] Both the 2HG value and 2HG ₅ value increased as the amount of adhesive applied increased, and sensory evaluation also showed that the fabric became moderately hard and taut. . Even when these adhesive fabrics were ironed at 150°C, the adhesive did not ooze out and no change in texture was observed. Example 2 (Manufacturing example of adhesive fabric for sewing substitute) ε-caprolatatum/adipic acid/sebacic acid/decanedicarboxylic acid/hexamethylenediamine/piperazine=25.0/11.55/11.55/11.55/
A silane-modified polyamide resin in which γ-isocyanatopropyltriethoxysilane is added to both ends of a copolyamide resin with a molar ratio of 26.90/13.45 (softening point: 134℃, melt viscosity after preheating for 2 minutes at 144℃: 2.5× ¹⁰⁷ centipoise) powder was classified to obtain a powder adhesive with a particle size of 20 to 100μ. Place a cotton broadcloth of the same size on a 15 cm square 80 mesh wire mesh with the edges fixed with a frame, and with suction from below to tightly secure the cloth to the wire mesh, place it on a 150 mesh wire mesh 1 mm x 10 cm. A conductive screen with thin line-shaped openings left and other parts sealed with resin is placed parallel to the above wire mesh electrode, with a distance of 7 mm between the two, the wire mesh electrode is grounded, and +5kV is applied to the screen side. When DC voltage was applied, the cloth did not lift at all. . The powdered adhesive was sprinkled on the non-perforated portions of the conductive screen, and an imprinting brush made of foamed polyurethane was moved back and forth three times to electrostatically apply the powdered adhesive onto the cloth. Next, remove the conductive screen, stop the suction of the wire mesh electrode, and apply chloroform/
1 to vapor of mixed solvent with methanol = 3/1 weight ratio
After exposure for seconds, the solvent was removed with a vacuum and the adhesive was fixed on the cloth. Next, another cotton broadcloth was superimposed on the adhesive-fixed cloth, and pressed in a press at 150° C. for 1 minute at a pressure of 30 g/cm ² . Next, steam was sprayed from the press for 5 minutes, and then the steam was stopped and hot pressing was performed for 1 minute. The amount of adhesive applied was determined from the difference in weight of the cloth before and after adhesion, approximately 300.
g/m ² (calculated based on the coated area). The performance of these adhesive fabrics was evaluated by the following method. (a) Ironing resistance Press the adhesive fabric with a tabletop press at 150°C for 3 minutes at a pressure of 30g/cm ² . (b) Washing resistance It was washed in a small washing machine according to the F-1 method of JIS L 1089, dehydrated, and air-dried. (c) Dry cleaning resistance Dry cleaning was performed in accordance with JIS L 0860. Adhesive strength was measured using a tensile tester at 20℃ and 65% humidity.
T-peel was performed at a tensile speed of 100 mm/min, and the average peel strength of the eight test pieces was determined. The texture is determined by measuring the bending stiffness using the KES method at 20℃ and ⁶⁵ % humidity. ) was sought. In each case, the average value of five test pieces was taken. The evaluation results are shown in Table 2.

[Table] Compared to before treatment, even after ironing, washing, and cleaning treatments, the T-peel strength did not decrease, but rather increased, and there was almost no change in bending rigidity, and the texture remained unchanged. The B value measured with just two layers of broad cotton cloth is 0.17g.
Since the cm ² /cm and 2H values were 0.12 g·cm/cm, the texture became only slightly hard due to adhesion, and a bonded structure with almost no discomfort could be formed.

Claims (1)

[Claims] 1. A cloth is interposed between a conductive screen with a large number of openings corresponding to the desired adhesive application pattern and a counter electrode, and a DC voltage is applied between the conductive screen and the counter electrode to form an electric field. , the powdered adhesive is moved by Coulomb force toward the counter electrode through the apertures of the conductive screen, and deposited on the cloth in the desired adhesive application pattern; In the method of fixing a powdered adhesive by applying heat to the agent, contacting it with solvent vapor, or applying further pressure, the cloth is closely fixed on the counter electrode by the wetting force of the liquid or the negative pressure of the air, or A method for manufacturing a cloth coated with an adhesive, which comprises tightly fixing the cloth onto a pallet, and then placing the pallet on a counter electrode.