KR100726745B1 - Method for bonding joint portions of sponge cloth, and bonded structure - Google Patents

Abstract

(Problem) Provided are a bonding method and a bonding structure of a joint of a sponge dough such as a wet suit and a dry suit.

(Solution) In the structure of the joint portion of a sponge-like dough fabric in which fabrics are laminated on one or both sides of a sponge-like sheet, a method of butt-bonding with an adhesive containing polychloroprene latex as a main component and a structure obtained thereby.

Description

TECHNICAL FOR BONDING JOINT PORTIONS OF SPONGE CLOTH, AND BONDED STRUCTURE}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a method for bonding seams, which is important for sewing sponges, used for repairing damaged parts, etc. used in wet suits and dry suits for marine sports, waterproof pants, shoes and bags.

For marine sports products such as wet suits and dry suits, and fishing products such as waders and shoes, sponge dough made of fabric laminated on one or both sides of a sponge sheet such as foamed polychloroprene or foamed polyurethane is often used. many. When manufacturing these products, there is a process of cutting and sewing sponge-based dough. In this process, polychloroprene (hereinafter referred to as CR) solvent-based adhesive is applied to both sides of the cutting surface of two sponge-based dough, and is manually bonded. have.

However, organic solvents such as toluene, ethyl acetate, methyl ethyl ketone, and the like are used for the CR solvent-based adhesives, and since organic solvents volatilize in the workplace when the adhesive is applied, it is not preferable in terms of safety and hygiene of the worker and environment. The reduction of is desired.

The present invention has been made in view of the above-described prior art, and has no problems in terms of safety and hygiene and environment as in the case of using a conventional CR solvent adhesive, and can be firmly adhered to a conventional CR solvent adhesive. It is an object to provide a method.

The present inventors have repeatedly studied in order to achieve the above object, and as a result, an adhesive surface containing polychloroprene latex as a main component, in particular a polychloroprene-based latex and an aqueous adhesive containing a tackifier resin as an essential component, is provided on the surface of the sponge dough ( The present invention was completed by discovering that the above problems were solved by a method of applying to a cut surface), drying it if necessary, and then manually bonding it.

That is, the present invention is a method for bonding the cutting surface of the sponge-like dough in which the sponge sheet and the fabric are laminated, the sponge is applied by applying an adhesive containing polychloropron-based latex as a main component to the cutting surface A method of adhering the joints of the first dough, preferably applying an aqueous adhesive containing polychloroprene-based latex and a tackifier resin in a ratio of 100 parts by mass to 20 to 100 parts by mass in terms of solid content. It is a bonding method obtained by the process and the process of crimping by hand after drying of an adhesive agent if necessary, and the adhesive structure obtained by it.

In this case, the polychloroprene-based latex contained in the adhesive is preferably a latex obtained by copolymerizing chloroprene and a carboxyl group-containing vinyl monomer.

EMBODIMENT OF THE INVENTION Hereinafter, the content of this invention is demonstrated in detail.

As the sponge sheet of the present invention, rubber or elastomeric foam sheet is preferably used without particular limitation, and specifically, natural rubber (NR), isoprene rubber (IR), styrene-butadiene rubber (SBR), butadiene rubber (BR) ), Butyl rubber (IIR), ethylene-propylene rubber (EPM, EPDM), polychloroprene (also known as chloroprene rubber, CR), nitrile rubber (NBR), chlorosulfonated polyethylene (CSM), epichlorohydrin rubber, acrylic A sheet having elasticity while having continuous bubbles and / or independent bubbles such as rubber, polyhydric sulfide rubber, silicone rubber, urethane resin, vinyl chloride resin, olefin resin and chlorinated polyolefin resin can be used. However, in consideration of the feeling of fit to the body, elasticity, light weight, and heat insulation / thermal insulation effect when made of a wet suit, expanded polychloroprene having an independent bubble is preferable.

For example, a foamed rubber material having different hardness or foaming ratio proposed and used in Japanese Patent Application Laid-Open No. 11-79078 (Applicant: Ina Poly Trading) may be laminated.

The fabric in the present invention is preferably a woven fabric, a knitted fabric or a nonwoven fabric, but having elasticity, and more preferably a two-way tricot (vertical, stretchable in both directions). The material of the fibers constituting the fabric is not particularly limited, and polyesters, polyurethanes, acrylics, polypropylenes, and the like can be used, but nylon jersey or polyester jersey is most preferable for wet suit applications.

The fabric of the present invention may be water-repellent processed by a water repellent such as silicone or fluorine. In this case, either the fabric formed using the water-repellent fiber and the fabric repelled in the fabric state may be used.

The sponge dough of the present invention is obtained by attaching the fabric described above to one or both surfaces of the above-described sponge sheet. The method of combining and pasting these is not limited. For example, in the case of a wet suit, a sponge-based dough obtained by a manufacturing method of applying an adhesive to a polychloroprene-based sponge sheet and then superposing a nylon- or polyester-based cloth and hot pressing at 80 to 150 ° C is preferably used.

The adhesive agent in this invention needs to contain polychloroprene type latex as an essential component. By using polychloroprene-based latex as a main component, it is possible to obtain adhesive properties that cannot be obtained with other latex adhesives such as acrylic, urethane or natural rubber. In addition, the kind of polychloroprene type latex in this invention is not specifically limited, In the case of obtaining by a polymerization method and emulsion polymerization, it does not depend on the kind of emulsifier used, the quantity of a gel powder, the molecular weight of a polymer, etc.

The polymer contained in the polychloroprene-based latex of the present invention is emulsion-polymerized at least one kind of a homopolymer of 2-chloro-1,3-butadiene (hereinafter referred to as chloroprene) or a monomer copolymerizable with chloroprene and chloroprene. It is a copolymer obtained.

Monomers copolymerizable with chloroprene include, for example, 2,3-dichloro-1,3-butadiene, 1-chloro-1,3-butadiene, butadiene, isoprene, styrene, acrylonitrile, acrylic acid and esters thereof, Methacrylic acid, its esters, etc. are mentioned, Two or more types can also be used as needed.

In particular, the copolymer of chloroprene and one or more types of carboxyl group-containing vinyl monomers is preferable because the flexibility of the adhesive layer can be maintained and a good feel can be obtained.

Examples of the carboxyl group-containing vinyl monomers include methacrylic acid, acrylic acid, crotonic acid, fumaric acid, maleic acid, citraconic acid, and glutamic acid. If necessary, two or more kinds of carboxyl group-containing vinyl monomers may be used. Among them, methacrylic acid (also referred to as 2-methylpropenic acid or α-methylacrylic acid) is particularly preferred, and a copolymer of chloroprene and methacrylic acid facilitates viscosity control during emulsion polymerization and provides high water resistance to the adhesive. I can have it.

Although the addition amount of a carboxyl group-containing vinyl monomer is not specifically limited, It is preferable that a carboxyl group-containing vinyl monomer is 0.01-10 mass parts in 100 mass parts of total monomers. By copolymerizing a carboxyl group-containing vinyl monomer in an amount of 0.01 parts by mass or more, the crystallinity of the polymer can be lowered, and as a result, flexibility can be imparted to the joint. However, when the carboxyl group-containing vinyl monomer is more than 10 parts by mass, the pot life after adding the curing agent may be shortened, so that the water resistance may be lowered.

The emulsifier and / or dispersant used in the emulsion polymerization of the polychloroprene-based latex of the present invention is not particularly limited, and various anionic, nonionic, and cationic types commonly used in chloroprene latex can be used. Examples of the anionic emulsifier include carboxylic acid type and sulfuric acid ester type. Examples thereof include alkali metal salts of rosin acid, alkylsulfonates having 8 to 20 carbon atoms, alkylaryl sulfates, and condensates of naphthalene sulfonate with formaldehyde. Can be mentioned. Specific examples of the nonionic type include polyvinyl alcohol or copolymers thereof (e.g., copolymers with acrylamide), polyvinyl ether or copolymers thereof (e.g., copolymers with maleic acid), polyvinylpyrrolidone or air thereof. The copolymer (for example, copolymer with vinyl acetate), the chemical formula of these (co) polymers, or a cellulose derivative (hydroxyethyl cellulose), etc. are mentioned. Specific examples of the cationic type include aliphatic amine salts and aliphatic quaternary ammonium salts. Examples thereof include octadecyltrimethylammonium chloride, dodecyltrimethylammonium chloride, dilauryldimethylammonium chloride, and the like.

Of these, polyvinyl alcohol is most preferred. When the latex containing polyvinyl alcohol is used, the adhesive holding time of an adhesive is long, and the allowable time from application | coating to pasting can be extended. In this case, although the degree of polymerization and degree of polymerization of the polyvinyl alcohol are not particularly limited, it is preferable that the degree of polymerization is 60 to 95 mol% and the degree of polymerization is 200 to 700. It may also be a modified type (eg, acetoacetylated type, type having polyethylene units (commonly referred to as RS type)). In addition, polyvinyl alcohol exhibits the same effect on the adhesive performance even when added after the polymerization of polychloroprene.

The amount of the emulsifier and / or dispersant added in the polychloroprene-based latex of the present invention is preferably 0.5 to 10 parts by mass per 100 parts by mass of the total initial monomer. If it is less than 0.5 parts by mass, the emulsifying power is insufficient, and if it is more than 10 parts by mass, the water resistance of the adhesive is lowered.

The polymerization method of the polychloroprene of the present invention is not particularly limited, and solid content concentration and toluene solubility are obtained by appropriately selecting and controlling the polymerization temperature, the polymerization catalyst, the chain transfer agent, the polymerization terminator, the final polymerization rate, the demonomer, the concentration condition, and the like. The negative molecular weight, toluene insoluble content (gel content), etc. can be adjusted.

Although the polymerization temperature of the polychloroprene of this invention is not specifically limited, In order to perform a polymerization reaction smoothly, it is preferable to make polymerization temperature into 10-50 degreeC. The polymerization catalyst is a sulphate salt such as potassium persulfate, an organic peroxide such as 3-butyl hydroperoxide, or the like, and is not particularly limited.

The kind of chain transfer agent used for polymerization is not specifically limited, Usually, what is used for emulsion polymerization of chloroprene can be used, For example, Long-chain alkyl mercaptans, such as n-dodecyl mercaptan and tert- dodecyl mercaptan, Known chain transfer agents, such as dialkyl xanthogen disulfides, such as diisopropyl xanthogen disulfide and diethyl xanthogen disulfide, and iodine form, can be used.

The polymerization terminator (polymerization inhibitor) of polychloroprene is not particularly limited, and for example, 2,6-tert-butyl-4-methylphenol, phenothiazine, hydroxyamine and the like can be used.

The final polymerization rate of polychloroprene is not particularly limited and can be arbitrarily controlled. Unreacted monomers are removed by demonomer operation, but the method is not particularly limited.

By diluting the polychloroprene-based latex of the present invention by concentration or addition of water, the solid content concentration can be controlled to the required concentration. Concentration methods include reduced pressure concentration, but are not particularly limited. Considering the drying rate of the adhesive and the storage stability of the adhesive, the solid content concentration of the polychloroprene-based latex is preferably 40 to 65 mass%.

The polychloroprene-based latex of the present invention is more preferable because the toluene insoluble content (gel content) of the copolymer is 5 to 70% by mass, because an adhesive having excellent balance between initial adhesive force and state adhesive force is particularly excellent. When toluene insoluble content is lower than 5 mass%, a state adhesive force may be inadequate when it exceeds 70 mass% on the contrary.

The tackifying resin of this invention is not specifically limited. Specifically, rosin resin, polymerized rosin resin, α-pinene resin, β-pinene resin, terpene phenol resin, C ₅ oil petroleum resin, C ₉ oil petroleum resin, C ₅ / C ₉ oil petroleum resin, DCPD And petroleum resins, alkylphenol resins, xylene resins, coumarone resins and coumarone indene resins. In order to obtain sufficient initial adhesive force, the resin whose softening point temperature is 80-160 degreeC is preferable.

The method of adding the tackifying resin is not particularly limited, but in order to uniformly disperse the resin in the adhesive, it is preferable to make an aqueous emulsion and then add it. In addition, in the method of producing an aqueous emulsion of a tackifying resin, a solution dissolved in an organic solvent such as toluene is emulsified / dispersed in water using an emulsifier, and then the organic solvent is heated and removed under reduced pressure, and pulverized into fine particles to emulsify / disperse. Although there is a method of making it, etc., electrons capable of producing an emulsion of fine particles are more preferable.

The addition amount (solid content conversion) of an tackifying resin is 20-100 mass parts per 100 mass parts of polychloroprene type latex of solid content. If it is less than 20 mass parts, initial stage adhesive force will be inadequate, and when it exceeds 100 mass parts, formation of an adhesive film will be inhibited and adhesive defect will be easy to produce.

The water-based adhesive of the present invention is an essential component of polychloroprene-based latex and tackifying resin, depending on the performance required, metal oxides, thickeners, fillers, film forming aids, ultraviolet absorbers, antioxidants, plasticizers, vulcanizing agents, vulcanization accelerators, defoamers Etc. can be added arbitrarily.

In order to increase the storage stability of the adhesive, a metal oxide may be added, and specific examples thereof include zinc oxide, magnesium oxide, and lead oxide. Metal oxide can suppress the fall of pH by the dehydrochlorination reaction of polychloroprene. It is preferable to make these metal oxides into aqueous dispersion state, and to mix them, but you may add them in powder state.

The apparatus for producing the aqueous dispersion includes a rotary homogenizer, a media mill, a colloid mill, a high pressure homogenizer, and the like, and is not particularly limited.

Representative examples of the rotary homogenizer device include a homomixer (manufactured by Tokushu Kikyo Kogyo Co., Ltd.) and a crea mix (manufactured by M Technic Co., Ltd.), and a representative example of the media mill device is dino mill (Shinmaru Entaprise Co., Ltd.). Production). Representative examples of the colloid mill apparatus may include mas collider (manufactured by Masko Sangyo Co., Ltd.), and representative examples of the high pressure homogenizer apparatus may be a microfluidazer (manufactured by Microfluidex), a homogenizer ( Homogeniser; APV GAULIN Co., Ltd.), ULTIMAIZER System (manufactured by Sugino Machine Co., Ltd.), and DeBEE series (manufactured by Nippon Bei Co.).

When adjusting the viscosity of the adhesive, a thickener may be added, and specific thickeners include sodium polyacrylate, water-soluble polyurethane, associative polyurethane emulsion, alkali swelling acrylic emulsion, carboxymethyl cellulose (CMC), and methyl cellulose (MC). , Hydroxyethyl cellulose (HEC), hydroxypropyl cellulose (HPC), polyvinyl alcohol, synthetic smectite and the like.

Moreover, in order to reduce product cost, it is effective to add a filler to the adhesive, and specific fillers include calcium carbonate, aluminum hydroxide, titanium oxide, barium sulfate, synthetic silica and the like.

Film forming aids include propylene glycol, n-butyl ether, dipropylene glycol, tripropylene glycol, 2,2,4-trimethyl-1,3-pentadiol monoisobutylate, 2,2,4-trimethyl-1, 3-pentadiol diisobutylate etc. are mentioned.

The aqueous adhesive of the present invention may be used as a one-component adhesive or may be used as a two-liquid mixed adhesive in combination with various curing agents. As a hardening | curing agent, a melamine resin, a block isocyanate compound, a water dispersion type isocyanate compound is mentioned. When using a hardening | curing agent, when it adds and stirs in water, the water-disperse-type isocyanate compound dispersible as fine particles in water is easy to handle, and it is convenient.

Although the viscosity of an adhesive agent may be adjusted according to the specification of a coating method and a coating device, 1000-15000 [mPa * s] (B type viscometer, 25 degreeC, 30 rpm) is preferable. If the viscosity is less than 1000 [mPa · s], the elasticity on the surface of the coated surface may be a problem. If the viscosity is higher than 15000 [mPa · s], uniform coating becomes difficult.

In the process of apply | coating an adhesive agent to the cutting surface of the sponge dough of the adhesion method of this invention, the specification of the method of apply | coating and an apparatus is not specifically limited. When the sponge is made of several sheets of paper, the spraying area, curtain flow coater method, bar coater method, roll coater method and the like can be applied. Examples of the roll coater method include a gravure roll coater method and a reverse gravure roll coater method.

However, when the application area is small, since a large apparatus cannot be used, it is preferable to apply | coat with a bristles, a brush, and a finger.

Although application amount is not specifically limited, It is necessary to control so that an adhesive agent may not protrude from a joint part, and 20-200 g / m <2> (wet) is preferable.

In the crimping | bonding process of the bonding method of this invention, the specification of the method and an apparatus is not specifically limited. However, after the application of the adhesive, the method of manual butt bonding after the adhesive has dried is most preferred.

When the adhesive is dried, when the moisture in the adhesive layer has evaporated by 50% or more, that is, when the moisture in the adhesive before application is 100 mass%, this is preferably less than 50 mass%, more preferably less than 20 mass%. The state in which the adhesive is not attached even when a finger or the like touches the surface of the adhesive layer, that is, the film is formed on the surface of the adhesive layer, is to overlap the facing surfaces of the sponge-like dough.

The reason why the method of overlapping and bonding the fabrics after drying is suitable is that the adhesive may stick out when the adhesive is bonded together in a wet state, which may damage the appearance of the product. In addition, when the sponge sheet of dough is an independent bubble, moisture in an adhesive does not volatilize well.

The crimping method is preferably manual. The reason for this is that the cutting surfaces are prevented from shifting and bonding.

Although sufficient adhesion and watertightness are obtained in the bonding method of the present invention, in order to further improve or reinforce the watertightness, JP-A-7-331521 (Applicant: Nagasaki Masahiro, Hideo Shiawaza), As proposed in 61634 (Applicant: Bandoka Kagaku Co., Ltd.), it may be sutured along the joint, a sealant may be applied to the joint, or a stretch tape may be adhered thereon.

EXAMPLE

Hereinafter, the present invention will be described through Examples, but these Examples do not limit the present invention.

Experimental Example 1

3.5 parts by mass of polyvinyl alcohol (denkafobal B-05 / Denki Kagaku Kogyo Co., Ltd.) having a sensitivity of 88 mol% and a degree of polymerization of 550 in 96 parts by mass of water in a nitrogen atmosphere using a 3 liter reactor. Dissolve at 60 ° C. After cooling this polyvinyl alcohol aqueous solution to room temperature, 99 mass parts of chloroprene monomers, 1 mass part of methacrylic acid, and 0.4 mass part of octyl mercaptan are added to this. It is superposed | polymerized using sodium sulfite and potassium persulfate as an initiator, maintaining this at 45 degreeC, and polychloroprene latex is obtained. Subsequently, 20 mass% diethanolamine aqueous solution is added to this polychloroprene latex, pH is adjusted to 7, it is concentrated by vacuum heating, and solid content is adjusted to 55 mass%.

As a result of measuring the solid content of the said polychloroprene type latex and the copolymer of the copolymer by the following method, the solid content was 55 mass% and the gel content was 29 mass%.

[Solid content concentration]

Only an aluminum dish is weighed and it is set as A. Weigh an aluminum dish containing 2 ml of latex sample. The aluminum dish in which the latex sample was put is dried in 110 degreeC atmosphere for 2 hours, and it weighs and sets it as C. Solid content concentration (%) is calculated by the following formula.

Solid content concentration = {(C-A) / (B-A)} * 100

[Measure Gel Content (Toluene Insoluble)]

The latex sample is lyophilized and weighed to obtain A. 20 hours at 23 DEG C, dissolved in toluene (adjusted to 0.6% by mass), a centrifuge is used, and the gel is separated using a 200 mesh wire mesh. The gel powder is dried naturally under an atmosphere of 110 ° C. for 1 hour, weighed to obtain B. Gel content (mass%) is computed according to following Formula.

Gel content = (B / A) × 100

Example 1

45 parts by mass of terpene phenol-based tackifying resin (manufactured by Tamanol E-100 / Arakawa Kagaku Kogyo Co., Ltd.) per 100 parts by mass of the polychloroprene latex of the solids obtained in Experimental Example 1 (in terms of solids), and a water-soluble polyurethane. 3 parts by mass of 0.06 parts by mass (in terms of solids) and zinc oxide (2 types of zinc oxides / manufactured by Sakai Kagaku Kogyo Co., Ltd.) as a thickener (Primal RM-8W / Rom & Haas Japan Japan). It mixes and sets it as the adhesive agent A.

Two pieces of sponge dough (with nylon jersey attached to the inside and inside of a polychloroprene foam sheet having a thickness of 3 mm) were cut into a rectangle having a width of 50 mm × 100 mm in length, and the length of each sponge dough was 100 About 0.03 g of adhesive A is applied to the cut surface of mm with a finger. After drying for 5 minutes in 23 degreeC atmosphere, the cutting surfaces to which the adhesive agent A was apply | coated were bonded together and manually bonded. This bonding method is called bonding method A.

The following adhesive force evaluation test is done about the test piece obtained by the adhesion method A.

[Initial Adhesion Evaluation Test]

Ten minutes after pressing, the shear bond strength is measured at a tensile rate of 200 mm / min using a tensile tester.

[State Adhesion Evaluation Test]

After 7 days, the shear bond strength is measured at a tensile speed of 200 mm / min using a tensile tester.

[Waterproof Adhesion Evaluation Test]

After squeezing, soak in pure water for 7 days, and measure the shear bond strength at a tensile speed of 200 mm / min with a tensile tester.

[Content Adhesion Evaluation Test]

After 7 days after squeezing, soak it in toluene for 2 seconds, and measure the shear bond strength at a tensile speed of 200 mm / min with a tensile tester.

Example 2

Two sponge doughs (with nylon jersey attached to the outside and inside of a polychloroprene foam sheet having a thickness of 3 mm) as in Example 1 were prepared in a rectangular shape having a width of 50 mm x 100 mm in length, and each sponge was prepared. The adhesive A similar to Example 1 of about 0.03 g of Example 1 is apply | coated to the cutting surface of length 100mm of a dough by finger. After drying for 2 hours in a 23 ° C atmosphere, the cutting surfaces coated with the adhesive A are faced to each other and manually bonded. This bonding method is called bonding method B.

The adhesive force evaluation test similar to Example 1 is performed about the test piece obtained by the adhesion method B.

Example 3                     

Two sponge doughs (with nylon jersey attached to the outside and inside of a polychloroprene foam sheet having a thickness of 3 mm) as in Example 1 were prepared in a rectangular shape having a width of 50 mm x 100 mm in length, and each sponge was prepared. The adhesive A similar to Example 1 of about 0.03 g of Example 1 is apply | coated to the cutting surface of length 100mm of a dough by finger. After drying for 2 hours in an atmosphere of 70 ° C, the cutting surfaces coated with the adhesive agent A are bonded to each other by hand. This bonding method is called bonding method C.

The adhesive force evaluation test similar to Example 1 is performed about the test piece obtained by the adhesion method C.

Comparative Example 1

100 parts by weight of dencachloroprene A-90 (polychloroprene, manufactured by Denki Kagaku Kogyo Co., Ltd.), 460 parts by weight of toluene, 115 parts by weight of methyl ethyl ketone, 90 parts by weight of methyl methacrylate, and 0.5 parts by weight of benzoyl peroxide Graft reaction of methyl methacrylate is carried out to prepare a CR solvent adhesive. 2,6-t-butyl-4-methylphenol was used as the polymerization terminator to control the conversion of methyl methacrylate to about 30% by weight. This solvent adhesive is referred to as adhesive B.

The test piece is manufactured by the adhesive method A similar to Example 1 with adhesive B, and the adhesive force evaluation test similar to Example 1 is performed.

Comparative Example 2

The test piece is manufactured by the adhesive method C similarly to Example 3 with adhesive B, and the same adhesive force evaluation test as Example 1 is performed.

Table 1 shows the evaluation results obtained in Examples 1 to 3 and Comparative Examples 1 and 2.

Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 glue A A A B B Gluing method A B C A C Adhesion [N / ㎜] Initial Adhesion State Adhesion Strength Water Resistance Adhesion Solvent  Material destruction material destruction material destruction material destruction  Material destruction material destruction material destruction material destruction  Material destruction material destruction material destruction material destruction  0.2 Material Destruction Material Destruction 0.0  0.3 Material Destruction Material Destruction 0.0 Material destruction: destruction of foamed polychloroprene rubber

Comparative Example 3

45 masses of terpene phenol resin-based adhesive resins (Tamanol E-100 / Arakawa Kagaku Kogyo Co., Ltd.) per 100 parts by mass of solid acrylic resin emulsion (Dial LX-100 / Mitsubishi Rayon Co., Ltd.) 2 mass parts (solid content conversion) of a part (solid content conversion) and the sodium polyacrylate thickener (Aron A-10L / Toagosei Co., Ltd. make) are mix | blended and it is set as adhesive C.

The test piece is manufactured by the adhesive method A similar to Example 1 with adhesive C, and the adhesive force evaluation test similar to Example 1 is performed.

Comparative Example 4

A test piece was prepared in the same adhesive method C as in Example 3, and the adhesive C was tested for the same adhesive force evaluation as in Example 1.

Comparative Example 5

Solid Polyurethane Resin Emulsion (Hylon ECOS 3000 / Dainippon Ink & Chemicals Co., Ltd.) 45 parts by mass of terpene phenolic resin (Tamanol E-100 / Arakawa Kagaku Kogyo Co., Ltd.) per 100 parts by mass 2 parts by mass (in terms of solids) of a mass part (in terms of solids) and a sodium polyacrylate thickener (manufactured by Aaron A-20L / Toagogo Seibu Co., Ltd.) are used as the adhesive D.

The test piece was manufactured by the adhesive method A similar to Example 1 with adhesive D, and the same adhesive force evaluation test as Example 1 is performed.

Comparative Example 6

A test piece was prepared in the same adhesive method C as in Example 3, and the adhesive D was subjected to the same adhesive evaluation test as in Example 1.

Comparative Example 7

45 parts by mass of terpene phenol-based tackifying resin (made by Tamanol E-100 / Arakawa Kagaku Kogyo Co., Ltd.) per 100 parts by mass of solid natural rubber latex (manufactured by DPL-14 / Regitech Co., Ltd.) ), 2 parts by mass (in terms of solids) of a polyacrylate thickener (Aron A-20L / Toagogo Seibu Co., Ltd.) is blended to form an adhesive E.

The test piece was manufactured by the adhesive method A similar to Example 1 with adhesive E, and the same adhesive force evaluation test as Example 1 is performed.

Comparative Example 8

The test piece was manufactured by the adhesive method C similarly to Example 3, and the adhesive agent E is tested for the same adhesive force evaluation as Example 1.

Table 2 shows the evaluation results obtained in Comparative Examples 3 to 8.

Comparative Example 3 Comparative Example 4 Comparative Example 5 Comparative Example 6 Comparative Example 7 Comparative Example 8 glue C C D D E E Gluing method A C A C A C Adhesion force [N / ㎜] Initial adhesion state Adhesive strength Water resistance Adhesive strength Solvent adhesion  0.0 0.0 0.0 0.0  0.0 0.1 0.1 0.0  0.0 0.1 0.1 0.0  0.1 0.1 0.1 0.0  0.0 0.1 0.2 0.0  0.1 0.2 0.2 0.0

As can be seen from Table 1 and Table 2, the adhesion method (Examples 1 to 3) of the present invention is a conventional adhesion method (Comparative Examples 1 and 2), rubber latex other than chloroprene latex (Comparative Examples 3 to 8). Compared with the high adhesion.

Claims (14)

A method of adhering the cutting surfaces of a sponge-like dough in which a sponge sheet and a fabric are laminated, wherein the adhesive contains polychloroprene-based latex and adhesive resin in a ratio of 100 parts by mass to 20 to 100 parts by mass in terms of solid content. A method of adhering the joints of a sponge-like dough, characterized by applying and adhering. delete The bonding method according to claim 1, wherein the bonding is performed by applying a glue and then performing a drying operation. The method according to claim 1, wherein the polychloroprene-based latex is a latex formed by copolymerizing chloroprene and a carboxyl group-containing vinyl monomer. The adhesion method according to claim 4, wherein the polychloroprene-based latex is a latex obtained by copolymerizing a monomer mixture containing 0.01 to 10 parts by mass of a carboxyl group-containing vinyl monomer in 100 parts by mass of the total of monomers. The adhesion method according to any one of claims 1 to 7, wherein the polychloroprene-based latex contains polyvinyl alcohol. The method according to any one of claims 1 to 7, wherein the polychloroprene-based latex is a latex polymerized in the presence of polyvinyl alcohol. Bonding structure is carried out by the bonding method as described in any one of Claims 1-5, The adhesive structure characterized by the above-mentioned. Bonded according to the bonding method according to any one of claims 1 to 3 or 5, characterized in that the wet suit. The adhesive method according to claim 1 or 3, wherein the polychloroprene-based latex is a latex formed by copolymerizing chloroprene and a carboxyl group-containing vinyl monomer. Bonding structure is carried out according to the bonding method according to claim 6. Bonding structure is carried out according to the bonding method according to claim 7. Bonded according to the bonding method according to claim 6, characterized in that the wet suit. Bonded according to the bonding method according to claim 7, characterized in that the wet suit.