JP3446271B2 - Composite coating method, composite coating structure and insulating degassed sheet - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composite coating method for applying a resin composition to a structure and a structure thereof, and particularly to a composite coating method suitable for waterproof coating, floor coating and pavement surface and having excellent durability. And the structure thereof.

[0002]

2. Description of the Related Art In a conventional composite coating method for applying a resin composition to a structure, a coating method is used in which a resin coating material and various waterproof sheets of synthetic polymer type or asphalt type are combined. In this method, a waterproof sheet is attached to the base,
Next, the resin composition is applied onto the waterproof sheet, but there is a difficulty in maintaining the waterproof layer for a long period due to poor adhesion between the resin composition and the waterproof sheet, and it is used in carrying out such a construction method. The characteristics of the sheet have a great effect.

Therefore, as a method of improving the adhesion between the waterproof sheet and the resin composition, a fibrous layer is laminated on the surface of the insulating deaeration sheet (Japanese Patent Laid-Open No. 63-89768) or a multi-layer film layer is adhered. Means such as applying a primer to the surface of the sheet are used.

In the method of using a sheet in which a fibrous layer is laminated on the surface of the sheet, the surface is a fluffy surface and absorbs water when there is rainfall, and when the resin composition is coated, swelling occurs due to vapor pressure or the like, and the fibrous layer is formed. In the case of woven cloth, the impregnation property of the coating resin composition is poor. Further, in the case where the fibrous layer uses a heat-fusible yarn, or a non-woven fabric manufactured by latex, acrylic emulsion, etc., there is a problem that the non-woven fabric swells or the yarn is dissociated by the coating resin composition.

Further, in the method of using a sheet in which a multi-layer laminate film layer is adhered to the surface of the sheet, there is a problem that when the film has a multi-layer structure, the heat resistance between the laminate layers is weak and peeling occurs.

In the method of applying a primer agent to the surface of a sheet at the time of construction, it is necessary to sufficiently check the adhesiveness between the sheet and the primer resin composition. There is a problem that the additive used shifts to the waterproof layer with the passage of time and discolors the waterproof layer.

Further, in such a construction method as well, in the construction method in which the sheet is directly adhered to the base, there is a phenomenon that the base moisture is vaporized due to a rise in the surface temperature in the summer and the pressure causes the sheet layer to partially swell. Various methods have been proposed in which moisture is allowed to pass through a non-adhesive portion of a sheet layer and a base to escape to the outside to prevent swelling, but a sufficient effect has not been obtained.

[0008]

The object of the present invention is to solve the problems of the insulating degassing sheet used in the composite coating method,
That is, improving the adhesiveness between the fibrous layer which is the sheet surface layer and the lower sheet layer, improving the adhesiveness between the coating resin composition layer and the sheet layer, particularly peeling between the sheet and the resin composition layer, It is a composite coating method for a structure and a coated structure which have excellent durability without causing swelling from the base.

[0009]

The inventors of the present invention have completed the present invention as a result of earnest research in order to solve the above problems.

That is, according to the present invention, in a composite coating method for coating a resin composition on a structure, a spunbonded nonwoven fabric (b-1) consisting of a polyester core and a nylon sheath and an EPDM polymer are mainly formed on a substrate (a). A grooved sheet (b-2) as a component is laminated , and the groove of the grooved sheet (b-2) is
Provided is a composite coating method characterized in that an insulating degassing sheet (b), which is a combination of a square and an octagon, is applied to the back surface, and then (c) a resin composition is applied.

(Configuration)

The groundwork (a) of the present invention is a flat surface of a structure, for example, a roof surface, a wall surface of a civil engineering construction such as a house, a building, a bridge, a road, athletics, a tennis court, a factory,
It shows the floor surface.

The insulating degassing sheet (b) used in the present invention includes a spunbonded nonwoven fabric (b-1) consisting of a polyester core and a nylon sheath, and a grooved EPDM-based sheet (b) containing EPDM polymer as a main component. -2) and.

The non-woven fabric (b-1) is a heat-fusible non-woven fabric using a composite filament having a polyester filament filament as a core portion and nylon as an outer layer portion.

The EPDM sheet (b-2) is an unvulcanized EPD
It is prepared by kneading M polymer, process oil, filler and stabilizer and forming grooves on the back surface by calender rolls or pressing. Non-woven fabric of this sheet and surface layer (b-1)
It is manufactured by heat-sealing. And / or glass fiber (b-
Any one can be used as long as it is sandwiched between 1) and (b-2) and heat-fused at the same time.

Spunbonded nonwoven fabric (b-1) comprising a polyester core and a nylon sheath used in the present invention
Is used alone for PVC tile base cloth, PVC sheet base cloth, carpet base cloth, carpet tile base cloth, asphalt waterproof base cloth, etc., but all are used on the back side, and their characteristics are fully utilized. Absent. In the present invention, unvulcanized EP
The non-woven fabric is formed on the surface of a sheet such as a grooved sheet (b-2) containing DM polymer as a main component, which is difficult to adhere with a conventional adhesive.
It was found that (b-1) can be heat-sealed, and unvulcanized EPDM
By combining the non-woven fabric (b-1) as the surface layer of the grooved sheet containing a polymer as a main component, the maximum effect of excellent interlaminar adhesion of the composite coating structure can be obtained.

The polyester core for use in the present invention, basis weight of the spunbonded nonwoven fabric of nylon sheath portion can be used those 30~300g / m ^2, preferably in those 50 to 120 / m ^2.

The grooves formed on the back surface of the sheet of the present invention are
Any groove (concave) may be formed as long as it is formed so as to be pulled out to the peripheral portion, but a design consisting of a combination of squares and octagons because the non-woven fabric (b-1) on the surface does not crease it is a groove of. Grooves are 10-50% of the total area of the back surface
20 to 40% is preferable, and it is preferable that the depth is 1/3 to 1/2 of the thickness of the EPDM sheet.

In the present invention, even though the substrate is directly adhered to the substrate due to the groove, even if the substrate moisture is vaporized due to the temperature rise, the vaporized moisture in the pressurized state passes through the non-bonded portion between the waterproof layer and the substrate. It is possible to prevent swelling by escaping to the outside, and when bonded to the base, the shape of the groove does not appear linearly on the surface portion with respect to the longitudinal direction, the orthogonal direction, and the oblique direction of the sheet, and it is possible to cope with the displacement of the base.

The resin composition (c) of the present invention is, for example,
Solvent-based alkyd resin, aminoalkyd resin, vinyl resin, acrylic resin, epoxy resin, urethane resin,
Pigment selected from unsaturated polyester resin, chlorinated rubber, etc., water-based acrylic resin emulsion, epoxy resin emulsion, urethane resin emulsion, etc.
A coating composition prepared by adding and mixing a dispersant, a filler, a thixotropic agent, a catalyst and the like. Preferred are unsaturated polyester resins and urethane resins.

As the form of the resin composition (c), a one-pack type or a two-pack type in which the pot life is adjusted can be arbitrarily used. Further, the resin composition (c) of the present invention may contain powdered rubber powder, hard plastics powder, walnut powder, sand or the like for the purpose of imparting non-slip properties.

The urethane resin composition of the present invention refers to an organic isocyanate compound such as 2,4-tolylene diisocyanate (abbreviated as TDI) as a main component of a two-pack type.
65 / 35-TDI, 80 / 20-TDI, 4,4'-
Diphenylmethane diisocyanate (abbreviated as MDI),
Dianisidine diisocyanate, tridene diisocyanate, metaxylylene diisocyanate, hexamethylene diisocyanate, phenylene diisocyanate,
An organic polyisocyanate compound selected from aromatic diisocyanates and alicyclic diisocyanates such as 1,5-naphthalene diisocyanate, polymethylene polyphenyl polyisocyanate, isophorone diisocyanate, hydrogenated MDI and hydrogenated TDI. Or
These are used alone or in a mixture thereof with a polyol compound, for example, polyester polyols, polyether polyols, polyester polyamide polyols,
Polycarbonate polyols, polycaprolactone polyester polyols, polybutadiene polyols, polypentadiene polyols, castor oil-based polyols, polycarbonate polyols, low molecular weight diols, trimethylolpropane, glycerin, sorbitol, mannitol, dulcitol, etc. Yes, preferably polyether polyols having a molecular weight of about 200 to 10,000, low molecular weight diols, glycerin, trimethylolpropane, hexanetriol, triethanolamine, pentaerythritol, ethylenediamine, tolylenediamine, diphenylmethanediamine, tetra. Methylol cyclohexane, methyl glucoside, 2,2,6,6-tetrakis (hydroxylmethyl) cyclohex Alcohols such as ethylene oxide, propylene oxide, etc., added with a starting material such as nol, diethylenetriamine, sorbitol, mannitol, sucrose, etc., preferably an NCO / OH equivalent ratio of 1.5 or more, more preferably a ratio of 1.5 to 20. Any one selected from the group consisting of the NCO group-containing prepolymers reacted with each other or a mixture thereof and / or the solution system dissolved in a plasticizer or a solvent can be arbitrarily used.

Examples of the curing agent include polyester polyols, polyether polyols, polyester polyamide polyols, polycarbonate polyols, polycaprolactone polyester polyols, polybutadiene polyols, polypentadiene polyols, castor oil-based polyols, polycarbonate polyols. , Low molecular weight diols, trimethylolpropane, glycerin, sorbitol, mannitol, dulcitol, etc., preferably polyether polyols having a molecular weight of 200 to 1000.
Low molecular weight diol, glycerin, trimethylolpropane, hexanetriol, triethanolamine, pentaerythritol, ethylenediamine,
Tolylenediamine, diphenylmethanediamine, tetramethylolcyclohexane, methyl glucoside, 2,2,6,
6-Tetrakis (hydroxylmethyl) cyclohexanol, diethylenetriamine, sorbitol, mannitol, sucrose, etc. are used as starting materials to which alkylene oxides such as ethylene oxide and propylene oxide are added, preferably having a molecular weight of 200-
About 10,000 can be used.

Further, a curing agent used in polyurethane resins and epoxy resins to accelerate curing, for example, 3,3'-dichloro-4,4'diaminodiphenylmethane, a condensate of 2-chloroaniline and formaldehyde, diethyl. Any one of toluenediamine, MDA, TDA, ethylenediamine, trioxypropylenediamine and the like can be used as long as it is a single substance or a mixture thereof.

Known curing catalysts such as trimethylamine, triethylamine, tributylamine, N-dimethyllaurylamine, N-diethyllaurylamine, NN'-methylpiperazine, N, N'-dimethylbenzylamine, N-methylmorpholine. , Tertiary amines such as N-ethylmorpholine, triethylenediamine, N-pentamethylethylenetriamine, N, N, N'N'-tetramethylpropylenediamine, N-polymethylpolyethylenepolyamine and calcium octylate, octyl Any of lead acid, dibutyltin dilaurate, organic metal salts such as stanna octate, and the like, which are used alone or in a mixture, can be used.

The amount of these curing catalysts used is preferably 0.01 to 1.0 part by weight, more preferably 0.05 to 1.0 part by weight, based on 100 parts by weight of the organic polyisocyanate compound.
0.50 parts by weight is used

The one-pack type polyurethane resin shown in the present invention means an organic isocyanate compound such as 2,4-tolylene diisocyanate (abbreviated as TDI), 65 / 35-T.
DI, 80 / 20-TDI, 4,4'-diphenylmethane diisocyanate (abbreviated as MDI), dianisidine diisocyanate, tridene diisocyanate, metaxylylene diisocyanate, hexamethylene diisocyanate, phenylene An organic polyisocyanate compound selected from aromatic diisocyanates such as diisocyanate, 1,5 naphthalene diisocyanate, polymethylene polyphenyl polyisocyanate, hydrogenated MDI, hydrogenated TDI, and alicyclic diisocyanates, or A polyol compound such as polyester polyols, polyether polyols, polyester polyamide polyols, polycarbonate polyols, or polycaprolactone polyester, alone or in a mixture thereof. Liols, polybutadiene polyols, polypentadiene polyols, castor oil-based polyols, polycarbonate polyols, low molecular weight diols, trimethylolpropane, glycerin, sorbitol, mannitol, dulcitol, and the like, preferably polyether. Polyols having a molecular weight of about 200 to 10,000, low molecular weight diols, glycerin, trimethylolpropane, hexanetriol, triethanolamine, pentaerythritol, ethylenediamine, tolylenediamine, diphenylmethanediamine, tetramethylolcyclohexane, methylglucoside, 2 , 2,6,6-Tetrakis (hydroxylmethyl) cyclohexanol, diethylenetriamine, sorbitol, mannitol, cis An alkylene oxide, for example, ethylene oxide, propylene oxide, or the like, which is a starting material such as claose, is added, and an NCO group-containing prepolymer reacted preferably at an NCO / OH equivalent ratio of 1.5 or more, more preferably at a ratio of 1.5 to 20. , Which is a moisture-curable one or a mixture thereof, or an aqueous material which is emulsified by using the isocyanate compound, and a solvent-based one which is further dissolved in a solvent by a higher polymerization reaction. If so, it can be used arbitrarily.

Known curing catalysts such as trimethylamine, triethylamine, tributylamine, N-dimethyllaurylamine, N-diethyllaurylamine, NN'-methylpiperazine, N, N'-dimethylbenzylamine, N-methylmorpholine. , Tertiary amines such as N-ethylmorpholine, triethylenediamine, N-pentamethylethylenetriamine, N, N, N'N'-tetramethylpropylenediamine, N-polymethylpolyethylenepolyamine and calcium octylate, octyl Any of lead acid, dibutyltin dilaurate, organic metal salts such as stanna octate, and the like, which are used alone or in a mixture, can be used.

The amount of these curing catalysts used is preferably 0.01 to 1.0 part by weight, more preferably 0.05 to 1.0 part by weight, based on 100 parts by weight of the organic polyisocyanate compound.
0.50 parts by weight is used

The unsaturated polyester resin composition of the present invention is produced by polycondensation of α, β-unsaturated dibasic acid or its acid anhydride with aromatic saturated dibasic acid or its acid anhydride, and glycols. In some cases, an acid component or an aliphatic saturated dibasic acid may be used in combination as the acid component.

Examples of the above α, β-unsaturated dibasic acid or acid anhydride thereof include maleic acid, maleic anhydride,
Examples thereof include fumaric acid, itaconic acid, citraconic acid, chlormaleic acid and their esters.

Examples of the aromatic saturated dibasic acid or its acid anhydride include phthalic acid, phthalic anhydride, isophthalic acid, terephthalic acid, nitrophthalic acid, tetrahydrophthalic anhydride,
Endomethylenetetrahydrophthalic anhydride, halogenated phthalic anhydride and their esters, etc. are available. Aliphatic or alicyclic saturated dibasic acids include oxalic acid, malonic acid, succinic acid, adipic acid, sebacic acid, azelaic acid. , Glutaric acid, hexahydrophthalic anhydride and their esters, etc., which may be used alone or in combination.

Examples of glycols include ethylene glycol, propylene glycol, butylene glycol, neopentyl glycol, hexylene glycol, dimethylolcyclohexane, 2,4,4-trimethyl-1,3.
-Alkylene glycols represented by pentanediol, etc .; Polyalkylene glycols represented by diethylene glycol, polyethylene glycol, dipropylene glycol, polypropylene glycol, polypropylene glycol, etc .; bisphenol A, bisphenol F, bisphenol S, citrabrom bisphenol A
And the like, there are addition reaction products of dihydric phenols represented by, for example, ethylene oxide and alkylene oxides represented by, for example, propylene oxide, and as triols, glycerin, trimethylolpropane, trimethylolethane, 1,2,6- Hexanetriol, etc. Pentaerythritol as a tetraol unit,
Diglycerol, 1,2,3,4-butanetetriol and the like can be mentioned, and they can be used alone or in combination, but in addition to them, adducts of ethylene oxide, propylene oxide and the like can also be used. Further, polycondensates such as polyethylene terephthalate can be used as a part of glycols and acid components.

Examples of the curing agent include organic peroxides. Specifically, known conventional ones such as diacyl peroxide type, peroxy ester type, hydroperoxide type, dialkyl peroxide type, ketone peroxide type, peroxyketal type, alkyl perester type or percarbonate type. Is used and is appropriately selected depending on the kneading conditions and the curing temperature.

The addition amount of these curing agents is preferably 0.1 to 4 parts by weight based on 100 parts by weight of the total amount of the unsaturated polyester and the polymerizable vinyl monomer. You may use the said hardening | curing agent in combination of 2 or more types.

A curing accelerator is usually used in the unsaturated polyester resin composition of the present invention. As the curing accelerator, a metal compound is added if necessary, and examples of such a metal compound include cobalt naphthonate and
Cobalt octonate, divalent acetylacetone cobalt, trivalent acetylacetone cobalt, potassium hexoate, zirconium naphthonate, zirconium acetylacetonate, vanadium naphthonate, vanadium octonate, vanadium acetylacetonate, vanadyl acetylacetonate, lithium acetyl Curing accelerators for metal compounds generally used for unsaturated polyester resins such as acetonate are used, and these may be used in combination, and other curing accelerators such as amine-based compounds, phosphorus-containing compounds and β-diketones. You may combine with well-known hardening accelerators, such as class.

The amount of the curing accelerator added is usually 0.1 to 3 parts by weight based on 100 parts by weight of the unsaturated polyester and the polymerizable vinyl monomer. The curing accelerator may be added to the resin in advance, or may be added at the time of use.

A low shrinkage agent may be added to the unsaturated polyester resin composition used in the present invention for the purpose of reducing cure shrinkage. Examples of such a low-shrinking agent include thermoplastic resins, of which only typical ones are exemplified by methylmethacrylate ethylmethacrylate, butylmethacrylate,
Such as methyl acrylate or ethyl acrylate,
Various lower alkyl esters of acrylic acid or methacrylic acid; homopolymers or copolymers of various monomers such as styrene, vinyl chloride or vinyl acetate; or various vinyl monomers as described above. And at least one of various monomers such as lauryl methacrylate, isovinyl methacrylate, acrylamide, methacrylamide, hydroxylalkyl-acrylate or -methacrylate, acrynitrile, methacrylonitrile, acrylic acid, methacrylic acid or cetylstearyl methacrylate. In addition to copolymers with at least one of the above, cellulose acetate butyrate or cellulose acetate propionate or polyethylene or polypropylene, or saturated polyester. It is.

Various fibers can be mixed in the resin composition of the present invention in order to improve strength, prevent cracking, impart conductivity, and impart other functions. For example, glass fiber, amide, aramid, vinylon, polyester, organic fiber such as phenol, carbon fiber, metal fiber, ceramic fiber, or a combination thereof is used. Considering workability and economy, glass fiber and organic fiber are preferable. The form of the fiber may be plain weave, satin weave, non-woven fabric, mat-like, etc., but mat-like is preferable in view of construction method, thickness maintenance, etc. Further, glass roving is 20 to 1
It is also possible to use chopped strands cut to 00 mm.

FIG. 1 shows the structure of the present composite coating structure produced by the present composite coating method. A primer layer 2 is provided on the base 1 of the structure, if necessary, and an adhesive layer 3 is further provided thereon to insulate the structure. As the degassing sheet 4, a spunbonded nonwoven fabric having a polyester core portion and a nylon sheath portion and a grooved sheet 4 containing EPDM polymer as a main component are laid, and then a resin composition 5 is applied to construct the construction.

[0041]

The present invention will be described in detail below with reference to examples, but the present invention is not limited to the examples. Also, "part" and "%" in the text are based on weight unless otherwise specified.

Example 1 (1) Preparation of insulating degassing sheet 300 parts of unvulcanized EPDM polymer, process oil 1
After mixing 50 parts and 550 parts of calcium carbonate with a Banbury mixer, a kneader, an open roll, etc., with a molding machine such as a calendar roll having a deaeration groove pattern formed by combining squares and octagons, a pressure press, etc. An insulating degassing sheet of the present invention was prepared at 150 ° C. using a spunbonded nonwoven fabric composed of a polyester core and a nylon sheath as a base fabric. (Hereinafter abbreviated as the sheet)

0.1 kg / m ^{2 of} chloroprene-based rubber glue [Bonde G6800 manufactured by Konishi Bond Co., Ltd.] was applied to the holding concrete surface of the asphalt waterproof layer on the roof of a building 20 years after the sheet of (1) was built. After adhering, the joint portion of the sheet was joined with a glass fiber adhesive tape having a width of 50 mm. Then, 2.5k of solvent-based one-component urethane waterproof material [Dainippon Ink and Chemicals, Inc. product name: Flat One 700] is applied to the surface of the sheet.
g / m ^{2 was} applied, and on the next day, a smooth surface free of fluffing, pinholes and swelling was obtained.

A sample of this waterproof layer sampled in a shape of 3 × 30 cm is allowed to stand in a high temperature and humidity chamber at 85 ° C. and a humidity of 95% or more for 3 weeks, and any of the urethane waterproof layer, the nonwoven fabric of the sheet, and the EPDM polymer is used. No peeling or deformation occurred from the part.

Example 2 After adhering the sheet to the veranda portion in the same manner as in Example 1, 2.5 kg / min of a two-component urethane waterproof material (trade name Dick Urethane JS manufactured by Dainippon Ink and Chemicals, Inc.) was used.
m ² applied and cured, then topcoat (Dainippon Ink and Chemicals Co., Ltd. product name Dicktop N500)
0.3 kg / m ^{2 was} applied and cured to obtain a non-slip fluffy, smooth surface free from pinholes and swelling. Similar to Example 1, a sample of 3 × 30 cm was sampled from this waterproof layer and left standing in a high temperature and humidity chamber at 85 ° C. and a humidity of 95% or more for 3 weeks, but peeling or deformation occurred as in Example 1. It never happened.

Example 3 The sheet was adhered to a substrate similar to that in Example 1 to process a joint. Orthophthalic acid 7 mol, maleic anhydride 3 mol, diethylene glycol 3 mol, triethylene glycol 7 mol, toluhydroquinone 50 ppm 200 to 2
A heat condensation reaction was performed at 20 ° C. to obtain an unsaturated polyester having a double bond strength of 838. 70 parts of this unsaturated polyester was mixed with 30 parts of styrene monomer to prepare 6 parts as a curing accelerator.
% Cobalt naphthenate 0.2 part, 55% methyl ethyl ketone peroxide 1 part as a curing agent were added, and the gelling time was adjusted to about 1 hour at 20 ° C. and applied at 2.0 kg / m ² . And cured.

The coated surface was free from fluffing, swelling, and pinholes, and the edge of the sheet was not curled up due to the curing shrinkage of the polyester resin.

Comparative Example 1 The same as Example 1 except that an insulating degassing sheet prepared by laminating a 1 mm thick polyester fiber non-woven fabric on both sides of a 3 mm thick polyethylene foam was used in place of the sheet of Example 1. As a result of the implementation, countless fluffs were generated on the surface, and a solvent-based one-component urethane waterproof material [Flat One 70 manufactured by Dainippon Ink and Chemicals, Inc.
[0,] was applied in an amount of 2.0 kg / m ² and fluffing did not disappear, resulting in very poor efficiency.

Comparative Example 2 Instead of the sheet of Example 2, an ozone-treated PET film was laminated on the surface of an SBR sheet, and the sheet was further treated with 0.
When an insulating degassing sheet laminated with a 5 mm-thick polyester non-woven fabric was used and the same procedure as in Example 2 was carried out, the surface finish was as good as in Example 2, but 85
3 x 3 left in a high temperature and humidity chamber with a humidity of 95% or more for 3 weeks
The sample having a shape of 0 cm was a bad sample in which peeling occurred between the PET film of the insulating degassing sheet and the nonwoven fabric.

Comparative Example 3 The procedure of Example 3 was repeated, except that a 3 mm-thick polyethylene insulating degassing sheet was used in place of the sheet of Example 3, and 380 g / g of the unsaturated polyester resin composition was coated and cured. 3 mm after curing even though it uses a chopped strand mat of m ² glass fiber to prevent shrinkage
It was found that the end portion of the thick polyethylene insulating degassing sheet was turned up by about 2 cm and was not preferable as a waterproof layer.

[0051]

According to the present invention, although the fibrous layer is laminated on the surface of the sheet, the EPDM polymer as the lower layer is used for the spunbonded nonwoven fabric in which the fibrous layer to be used is composed of the polyester core and the nylon sheath. Adhesiveness with the grooved sheet as the main component is good and no fluffing occurs on the surface. Therefore, even if rain is encountered, water will not be absorbed and the resin composition can be applied by draining. Further, unlike a nonwoven fabric produced by using a heat-bonded yarn as the fibrous layer or a latex or an acrylic emulsion, there is no problem that swelling of the nonwoven fabric or dissociation of the yarn occurs due to the resin composition to be applied,
Further, since the multi-layer film layers are not adhered, there is no problem such as peeling due to weak wet heat resistance between laminated layers such as films.

Further, since this sheet has an insulating degassing structure, even if the substrate moisture is vaporized due to a temperature rise, the vaporized moisture in the pressurized state is removed from the waterproof layer and the substrate. It is possible to obtain various effects that the non-adhesive portion can be passed to the outside to prevent swelling. Also,
In the sheet of the present invention, when bonded to the substrate, the groove shape does not appear linearly on the surface of the non-woven fabric in the surface portion with respect to the longitudinal direction, the perpendicular direction, and the oblique direction of the sheet, and it can cope with the displacement of the substrate.

[0053]

[Brief description of drawings]

.

FIG. 1 is a cross-sectional view of a composite coating structure according to the present invention.

FIG. 2 is a cross-sectional view of an insulating degassing sheet of the present invention.

FIG. 3 is a back view of the insulating degassing sheet of the present invention.

[Explanation of symbols]

1-structure 2-primer 3-adhesive 4- Insulation degassing sheet 5-resin composition 6-spunbond nonwoven fabric Grooved sheet mainly composed of 7-EPDM polymer 8-groove

─────────────────────────────────────────────────── ─── Continuation of front page (56) Reference JP-A-48-52831 (JP, A) JP-A-63-277258 (JP, A) JP-A-60-59259 (JP, A) JP-A-2- 9631 (JP, A) JP 54-84309 (JP, A) JP 63-89768 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) E04D 11/00 E04D 11 / 02 E04D 5/12

Claims (6)

(57) [Claims] 1. A composite coating method for coating a structure with a resin composition, wherein a spunbonded nonwoven fabric (b -1) comprising a polyester core and a nylon sheath and a groove containing EPDM polymer as a main component are provided on a base (a). Attached with attached sheet ( b- 2)
The groove of the grooved sheet ( b- 2) has a square shape on the back surface.
A composite coating method characterized by comprising an insulating degassing sheet (b), which is a combination with an octagon, and (c) a resin composition. 2. A spunbonded nonwoven fabric ( b -1) in which the insulating deaeration sheet (b) comprises a polyester core and a nylon sheath.
A grooved sheet ( b -2) containing glass fiber ( b -3) and EPDM polymer as main components is used.
Composite coating method. 3. The composite coating method according to claim 1, wherein the resin composition is selected from a urethane coating composition and a polyester coating composition. 4. A spunbonded non-woven fabric ( b -1) comprising (a) a base layer, (b) a polyester core and a nylon sheath, and a grooved sheet ( b -2) containing EPDM polymer as a main component from the bottom. With the groove attached.
The groove on the sheet (b-2) is a combination of a square and an octagon on the back side.
A composite coating structure comprising an insulating degassing sheet layer (c) and a resin composition layer (c). 5. The composite coating structure according to claim 4 , wherein the resin composition is selected from a urethane coating composition and a polyester coating composition. 6. A spunbonded non-woven fabric ( b -1) consisting of a polyester core and a nylon sheath and a grooved sheet ( b -2) containing EPDM polymer as a main component are bonded together, and E
An insulating degassing sheet, characterized in that the groove of the grooved sheet ( b -2) containing PDM polymer as a main component is formed by combining squares and octagons on the back surface.