JPS61201081A - Production of adhesive coated cloth - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a novel method for manufacturing adhesive-coated fabric.

[Conventional technology]

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 real melt adhesive in a viscous aqueous solution. The adhesive is made into a paste and applied with a cylindrical screen coater, or a powdered adhesive is applied using Coulomb force as disclosed in Japanese Patent Publication No. 57-42113, and then heat is applied to coat the interlining material. Often used are products that are made by fusing and powder adhesive together.

[Problem that the invention seeks to solve]

Adhesive interlining is a material in which adhesive is fused to the entire surface of a continuous cloth, whether in a random pattern or in a fixed dot pattern.
The adhesive interlining is cut into the required shape at a sewing factory, aligned to the required parts of the fabric constituting the garment, basted, and bonded together by heat and pressure bonding to impart a shape-retaining function. 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 problems]

The inventors of the present invention have intensively studied methods for manufacturing adhesive cloth suitable for these requirements, and have discovered that the following method, which is an application of an electrostatic screen printing method, is superior, and have completed the present invention. Ta.

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 it with solvent vapor, or applying further pressure, the cloth is tightly attached to the counter electrode by the wetting force of the liquid or the negative and positive 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 ironing resistance, washing resistance,
The present invention also provides a method for producing an adhesive fabric with excellent dry cleaning resistance and texture.

In the present invention, Japanese Patent Publication No. 42-14342, Japanese Patent Publication No. 45-2
Powdered adhesive is applied onto cloth using the principle of electrostatic screen printing disclosed in the No. 5650 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 conductive screens include stainless steel, copper, brass,
A method of drilling continuous or dotted holes in a conductive thin plate of iron, aluminum, etc. according to a predetermined pattern, or by blocking unnecessary holes in a mesh screen made of conductive material with resin, etc., and making holes only in the predetermined pattern. There is a method of leaving the mesh screen open, or a method of attaching a photosensitive film to the mesh screen, exposing it to a predetermined pattern, and developing it to leave holes only in the necessary areas.

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, humidity, volume resistance of the cloth, fluff of the cloth, and amount of charge of the adhesive, but it is 1 to 10 kV/cm or +1 to +10 k.
V/cm, more preferably a range of -2 to -8 kV/cm or +2 to +8 kV/cm.

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 such a situation, we found that either the cloth is tightly fixed on the counter electrode using the wetting force of the liquid or the negative pressure of air, or the cloth is tightly fixed on the pallet, and then the pallet is 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 a 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. (ii) Apply the method (i) to the cloth fixing pallet, and place the pallet at a predetermined position on the counter electrode.

The pallet used in the present invention is preferably made of metal or non-metal and has a highly rigid plate-like structure with a thickness of 5 fl 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. Place a cloth on top of it and use a roller.
The cloth is tightly fixed to the counter electrode by applying pressure using a press, compressed air, or the like.

In the 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, use a porous sintered metal or the like.The cloth is tightly fixed to the electrode by suctioning it with weak force from the back side of the porous counter electrode.If the cloth has a dense structure, use a powdered adhesive. remains on the cloth and is not 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. It is also possible to install a pulp mechanism that detects the position of the cloth and applies suction force only to certain parts of the cloth.In order to minimize the unevenness of the cloth caused by suction, the diameter of the suction hole should be 1fi or less. is desirable.

If a cloth is simply placed on the counter electrode, the cloth will be attracted to the screen electrode with a voltage of about 3 to 4 kV/cm, but (i)
When applying the method of ~(iii), approximately 8
The cloth remains in close contact with the earth electrode until the voltage reaches kV/cm or more, and it is possible to apply the powdered adhesive onto the cloth in a desired shape with high precision.

If the cloth has a regular shape, the edges of the cloth may be held under tension with a jig, fixed to the counter electrode with single-sided or double-sided adhesive tape, or the non-applied portion may be magnetically attached to the counter electrode with a magnetic sheet. It is also effective to fix the

In order to apply the adhesive in place on the fabric, the application pattern on the conductive screen and the adhesive application position on the fabric must be precisely aligned. Zero alignment is when the screen and/or fabric are fixed. A visual sensor and/or tactile sensor detects the position, shape, presence of wrinkles, turned edges, etc. of the cloth by moving the counter electrode or the pallet, and after correcting the disordered cloth and correcting the orientation using the cloth gripping device, The conductive screen is placed correctly on the counter electrode or pallet, and driven by a belt, chain, hanger, elevating table, X-Y table, rotary table, 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 the 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 at 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 is the same as the one printed on the screen.

or negatively charged, moves toward the counter electrode by Coulomb force, and adheres to the cloth according to the predetermined shape of the many apertures provided in the screen.

The amount of adhesive applied can be adjusted by the powder supply rate from the holder or cartridge, the imprinting speed of the imprinting brush, the number of imprints, the voltage between the screen and the counter electrode, and the volume resistance of the cloth.

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 adhesive applied should be 9 m'' or less, more preferably 2 f12 or less, and the applied amount should be IXl0-'g/m. ” (10g/
m'') or more, and the adhesive is desirably applied in the form of many dots, lines, or grids.

If the purpose is to bond fabrics together, the adhesive application width should be 3 f.
It is desirable that the coating amount be 5 XIQ-'g/m" (50 g/+a") 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 cloth fixed 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 area. 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 fabric used in the present invention is made of cotton, wool, linen, silk, rayon, di- or triacetate, acrylic, nylon, polyester, polypropylene, polyethylene, or other natural or synthetic fiber materials, singly or in combination. Woven fabrics, non-woven fabrics 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 500μ.
It is 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 the particle size is too large, it may shift before fixing and disturb the coating pattern, which is undesirable. If the particle size is too large, it will be difficult to apply fine patterns, and the accuracy of coating fine lines and minute dots will deteriorate, so it is unsuitable. be.

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 preferably has a melt viscosity of 104 to 10 qcps when measured at a temperature 10°C higher than the softening point. is 10'~10"
It is preferable that it be of 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 K 2B17. If the softening point is too low, the fluidity of the powder at ordinary temperatures will be poor, and blocking may 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. Further, even when fixing an adhesive to cloth by spraying solvent vapor, an adhesive having a low softening point is not preferable because it has poor solubility in the solvent.

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 not only impairs the appearance, but also This is not preferable because the texture becomes hard and the adhesive strength also decreases. Furthermore, 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. Especially polyamide resin, polyester resin,
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 adipic acid, β-methyladipic acid, pimelic acid, corkic acid, azelaic acid, sebacic acid, nonanedicarboxylic acid, decanedicarboxylic acid, dodecanedicarboxylic acid, etc. having 6 to 1 carbon atoms.
2 aliphatic dicarboxylic acid, dimer acid whose main component is a dicarboxylic acid having 36 carbon atoms, terminal carboxylated 1,2-
Terminal carboxylated liquid rubbers such as polybutadiene, terminally carboxylated hydrogenated 1,2-polybutadiene, and aromatic dicarboxylic acids such as isophthalic acid, phthalic acid, and terephthalic acid are used. Also used are n-dodecenylsuccinic acid, isododecenylsuccinic acid, isododecylsuccinic acid, isooctylsuccinic acid, n-octylsuccinic acid, and acid anhydrides thereof.

Examples of diamines include ethylene diamine, propylene diamine, 1,2-diaminopropane, tetramethylene diamine, piperazine, pentamethylene diamine, hexamethylene diamine, 1,7-diaminohbutane, 1,8-diaminooctane, 1,9-diaminononane, 1,10-
Aliphatic and alicyclic diamines such as diaminodecane and both terminally aminated polyethylene glycol diamines having a molecular weight of 300 to 2.000 are used. As a lactam, ε
-6 or more carbon atoms such as caprolactam, ω-laurolactam, etc.
Twelve lactams or their ring-opened ω-amino acids are used.

Examples of polyester resins include aromatic polybasic acids such as terephthalic acid, isophthalic acid, phthalic acid, and trimellitic acid, adipic acid, sebacic acid, azelaic acid, decanedicarboxylic acid, fumaric acid, itaconic acid, cyclohexyldicarboxylic acid, dimer acid, etc. Acid components such as aliphatic or alicyclic polybasic acids, ethylene glycol, diethylene glycol, 1.4-butanediol, 1.6-hexanediol, polyethylene glycol with a molecular weight of 200 to 2,000, polypropylene glycol, polytetra Aliphatic polyol such as methylene glycol, bisphenol A and 2 to 1 ethylene oxide or propylene oxide
A copolymerized polyester obtained by polycondensing an aromatic polyol obtained by adding 8 moles 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 polyester resins and polyamide resins synthesized separately, which are mixed and melted to cause an esteramide exchange reaction. A block copolymer obtained by bonding a polyester resin and a polyamide resin with a diisocyanate compound such as toluene diisocyanate, hexamethylene diisocyanate, isophorone diisocyanate, or methylene bisphenyl diisocyanate is used.

Other polyethylene, ethylene-vinyl acetate copolymer,
Among copolymerized vinyl polymers such as ethylene-ethyl acrylate copolymer, ethylene-maleic anhydride copolymer, styrene-acrylonitrile-ethyl acrylate copolymer, and plasticized polyvinyl chloride resins with added plasticizers. Those having a softening point and melt viscosity within the above ranges can be used.

Furthermore, by using a resin that has the property of crosslinking with heat, moisture, or ionizing radiation, the ironing resistance, washing resistance, and dry cleaning resistance after bonding can be increased. If you use a cloth to adhere cloth, the plastic degeneration and melt flow of the resin will progress during repeated ironing, resulting in a hard texture, the adhesive resin will seep out on the back of the cloth, and the adhesive strength will decrease. There are also disadvantages such as swelling and elution of the adhesive due to repeated hot water washing and dry cleaning, 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.

Further, a hydrolyzable organosilicon group represented by the general formula (I) [R is a hydrocarbon group or N, 0. A hydrocarbon group containing a different element such as S, Ro is hydrogen or a C9 to C# hydrocarbon group, and 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 isocyanate groups, or thermally dissociable blocked isocyanate groups. When used as a resin component constituting an adhesive, it exhibits melt fluidity at the initial stage of heating, but it exhibits melt fluidity during the sewing process.

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 the case of a copolymerized vinyl resin, it can also be obtained by adding a hydrolyzable organosilicon compound having an unsaturated double bond during polymerization and performing 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 fuceric acid, maleic anhydride, itaconic acid, citraconic acid, or their acid chlorides or acid chlorides are added as raw materials and polycondensation is carried out. By doing so, a polymer having unsaturated double bonds in the molecular chain or in the side chain can be obtained. Introducing unsaturated double bonds into the molecular chain or side chain by adding monomers with conjugated double bonds such as 1,2-butadiene, 1,3-butadiene, isoprene, etc. during the synthesis of copolymerized vinyl polymers. You can also do it.

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-mentioned properties is to dissolve the resin in a solvent, add a non-solvent for the resin with stirring, cause the resin to precipitate through phase separation, and then filter and 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.

Furthermore, various fluidity improvers such as fine silicon oxide powder and calcium stearate may be added to improve the fluidity of the powder.

〔Effect of the invention〕

Since the adhesive cloth made by the method of the present invention can apply and fix adhesive in any desired application pattern, a powdered adhesive can be fixed to one side of the cloth to prevent the cloth from stretching, give tension, and provide interlining for shape retention. Since it can have a function, it eliminates the troublesome work of cutting the adhesive interlining, overlapping it in a predetermined position, basting it, and heat-pressing it as in the past, and realizes the interlining substitute function in a simple process. be able to.

In addition, the adhesive can be applied to the required areas of the fabric, let it settle and then cut, or the adhesive can be automatically applied to the required areas of the cut fabric.
After fixing, the cloth can be bonded by folding it or by overlapping another cloth and heat-pressing it. 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.

〔Example〕

The present invention will be explained in more detail with reference to Examples below.

Example 1 (Manufacturing example of adhesive fabric as substitute for interlining) The molar ratio of each residue of terephthalic acid, adipic acid, ethylene glycol, and diethylene glycol was 2/1/
310.4, a copolymerized polyester whose terminal end was triethoxysilylated (softening point: 130°C, melt viscosity: 244.000 centiboise after preheating at 140°C for 2 minutes) was classified to form a powder with a particle size of 20 to 100μ. Got the glue.

Steam was sprayed onto a 20 cm square aluminum plate, a 15 mm square polyester jersey cloth was placed on it, and a rubber roller was moved back and forth once to tightly fix the cloth to the aluminum plate.

25 l+n square holes/(
A 15cm square conductive screen with an area of 41m'' and unnecessary parts sealed with resin was placed parallel to the above aluminum plate, the distance between the two was set at 7 days, the aluminum plate was grounded, and the conductive screen was When a DC voltage of 5 kV was applied, the cloth did not lift up at all.

The above powdered adhesive was sprinkled on the non-perforated areas on the conductive screen, and an imprinting brush made of foamed polyurethane was slowly moved back and forth 1 to 4 times to electrostatically apply the powdered adhesive to the above cloth. . 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 by vacuum, and the adhesive was fixed on the cloth. 1 minute after 5 minutes of steam exposure
It was dried at 0°C. Thereafter, the amount of adhesive applied was determined from the difference in weight of the cloth before and after applying the adhesive. After leaving the adhesive fabric in a room at 20°C and 65% humidity for one day, the shear stiffness was measured using the XES method, which is widely known as a method for evaluating the texture of fabrics. Stress in degrees
Hysteresis loop width of distortion curve 2HG and 2HG 5
is as shown in Table 1.

Table 1 Relationship between the amount of adhesive applied and shear properties for polyester jersey cloth. As the amount of adhesive applied increases, the ZHG value and 2H
Both G and G values 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-cabrolatatum/adipic acid/sebacic acid/decanedicarboxylic acid/hexamethylenediamine/piperazine=
25.0/11.55/11.55/11.55/2
6. Silane-modified polyamide resin (softening point: 1
The melt viscosity after preheating for 2 minutes at 34℃ and 144℃ is 2.
．． 5 x 10' centipoise) powder was classified to a particle size of 2.
A powdered adhesive of 0-100μ was obtained.

Place a cotton broad cloth of the same size on a 15 cm square 80 mesh wire mesh with the edges fixed with a frame, and while suction is applied from below to tightly fix the cloth to the wire mesh, a 1 m x 10 ca thin wire is placed on top of the 150 mesh wire mesh. A conductive screen with a shaped hole left and the other parts sealed with resin is placed parallel to the above wire mesh electrode, the distance between the two is set to 7fi, the wire mesh electrode is grounded, and a DC voltage of +5 kV is applied to the screen side. When I applied it, the cloth did not lift at all.

The powdered adhesive was sprinkled on the non-perforated areas on the conductive screen, and an imprinting brush made of foamed polyurethane was applied to the non-perforated areas.
The powdered adhesive was applied electrostatically onto the fabric by moving it back and forth.

Subsequently, the conductive screen was removed, the suction of the wire mesh electrode was stopped, and it was exposed to the vapor of a mixed solvent of chloroform/methanol-3-1 by weight for 1 second, and then the solvent was removed by vacuum and the adhesive was fixed on the cloth. . Next, another cotton broad cloth was placed on top of the adhesive fixing cloth, and it was placed in a press at 150°C and pressed for 1 minute at a pressure of 30 g/cm. Next, steam was sprayed from the press for 5 minutes, and then steam was The cloth was stopped and hot pressed for 1 minute.The amount of adhesive applied was about 300 g/m'' (calculated based on the applied area) based on the difference in weight of the cloth before and after adhesion.

The performance of these adhesive fabrics was evaluated by the following method.

(a) For ironing resistance, press the adhesive fabric with a tabletop press at 150°C for 3 minutes at a pressure of 30g/co+''.

(b) Washing resistance The sample was washed in a small washing machine according to method F-1 of JIS L 10B9, dehydrated and air-dried.

(c) Dry cleaning resistance Dry cleaning was performed according to JIS L 0860.

The adhesive strength was determined by a tensile tester at 20°C and 65% humidity.
T-peel was performed at a tensile rate of 0.0 mm/min, and the average peel strength of the 8 test pieces was determined.

The texture was measured by bending stiffness using the K2S method at 20℃ and humidity 65.
%, and the bending rigidity (B value) per unit length in the stress/strain curve and the hysteresis width (ZHB value) at strain at a curvature of 0.5 cm-' were determined.

In each case, the average value of five test pieces was taken. The evaluation results are shown in Table 2.

Table 2 Results were obtained in which the bonding properties of the cotton broadcloth increased, but 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 0.17 g-ctm”1
cm, the 2HB value is 0.12 g-cvg/cm, so the feel and feel will only become slightly harder due to adhesion.
It was possible to form a bonded structure with almost no discomfort.

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.