JPH09286965A - Hot-melt type adhesive, solvent type adhesive, and sheet of foamed material and fibrous sheet surface-treated with the same adhesive - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a heat sealing material for metal roofing materials, not causing an election of a thermal adhesion temperature to the metal roofing materials after preserving a sheet of a foamed material or a fibrous sheet applied with an adhesive for a long period of time, nor generating a locking even by preserving the sheets in a wound state as a roll shape and good in adhesion, heat resistance and water proof property after laminating the sheets with the metal roofing materials, and also an adhesive suitably used for the surface treatment of a polyolefin-based formed material sheet or a fibrous sheet consisting of an inorganic fiber. SOLUTION: This hot-melt type adhesive contains 100 pts.wt. styrene- butadiene-styrene block copolymer, 5-200 pts.wt. rosinphenolic resin and 5-200 pt.wt. aromatic petroleum resin. Also, a heat insulating sheet is obtained by surface-treating the surface of a polyolefin-based foamed material sheet or a fibrous sheet with the application of the above adhesive.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a styrene-butadiene-styrene block copolymer (hereinafter abbreviated as SBS) -based hot-melt adhesive and SBS, which exhibit excellent effects when used in combination with a specific tackifier. A solvent-based adhesive, further surface-treated with this adhesive,
The present invention relates to a polyolefin foam sheet suitable as a heat insulating material to be laminated on a metal roofing material, and a fiber sheet made of inorganic fibers.

[0002]

2. Description of the Related Art For the purpose of imparting a heat insulating effect and a cushioning effect to a metal roofing material, a polyolefin type foam sheet or a fiber sheet made of inorganic fibers is laminated on the metal roofing material.

After heat-reactivating SBS-based adhesive is applied to the surface of the polyolefin-based foam sheet or the inorganic fiber sheet, the adhesive-coated surface of the foam sheet or fiber sheet is burned or heated with air. A metal roof material such as a heated steel plate is pressure-bonded and laminated to produce a heat-insulating metal roof material. The heat reactivation temperature of the adhesive is required to be relatively low in terms of workability, economy and work speed.

Generally, SBS adhesives can obtain low temperature activity by lowering their softening points. However, when a foam sheet or fiber sheet coated with an adhesive is stored in a roll at a high temperature for a long period of time in a warehouse or the like, there is a problem that the adhesive coated surface blocks the back surface in contact with the adhesive coated surface.

When a foam sheet or fiber sheet coated with an adhesive is stored at a high temperature in a warehouse or the like, the heat melting temperature of the adhesive layer rises and the heat fusion temperature with the metal roofing material becomes very high. . Therefore, it becomes necessary to heat the metal roofing material to be adhered to the sheet to a very high temperature, and the workability of the step of laminating the sheet and the metal roofing material becomes poor.

As a means for solving the disadvantage that the heat melting temperature of the adhesive layer rises as described above, after applying the polychloroprene adhesive to the polyolefin foam sheet, 5
It is disclosed that heat treatment is performed at 0 to 60 ° C. (see JP-A-5-24143).

However, the foam sheet coated with the polychloroprene adhesive has a very high heat fusion temperature between the adhesive layer and the metal roofing material, and is practically unusable.

[0008]

SUMMARY OF THE INVENTION The present invention is intended to solve the above-mentioned problems, and an object of the present invention is to provide an adhesive agent even after the foam sheet or fiber sheet coated with the adhesive agent has been stored for a long period of time. There is no rise in heat fusion temperature of the layer to the metal roofing material, blocking does not occur even if the sheet is stored in a rolled state, and the adhesiveness of the adhesive layer after being laminated with the metal roofing material The present invention provides a heat insulating material for a metal roofing material having excellent heat resistance and water resistance, and an adhesive that can be suitably used for surface-treating the polyolefin foam sheet or a fiber sheet made of inorganic fibers. It is to be.

[0009]

In order to achieve the above object, the present inventor has made detailed studies on various tackifiers to be added to hot melt type adhesives and solvent type adhesives. As a result, they have found that the combined use of SBS and a specific tackifier exhibits excellent effects.

That is, the invention according to claim 1 is a hot melt containing 100 parts by weight of a styrene-butadiene-styrene block copolymer, 5 to 200 parts by weight of a rosin phenol resin and 5 to 200 parts by weight of an aromatic petroleum resin. Mold adhesive.

According to a second aspect of the present invention, 100 parts by weight of a styrene-butadiene-styrene block copolymer, 5 to 200 parts by weight of a rosin phenol resin, 5 parts of an aromatic petroleum resin.
It is a solvent-based adhesive containing ˜200 parts by weight and a solvent.

The invention according to claim 3 is the invention according to claim 1 or 2.
A polyolefin-based foam sheet that has been surface-treated by applying the described adhesive to the surface of the polyolefin-based foam sheet.

The invention according to claim 4 is the first or second invention.
It is a fiber sheet which has been surface-treated by applying the described adhesive to the surface of a fiber sheet made of an inorganic fiber.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION First, the invention described in claim 1 will be described in detail. The adhesive according to claim 1, wherein S
The rosin phenol resin and the aromatic petroleum resin, which are blended in the BS as the tackifier, do not exhibit this performance even when blended in the SBS alone, and only by the interaction of the combination of these two types of tackifiers. It demonstrates its performance.

The SBS used in the present invention is a styrene-butadiene-styrene block copolymer, and the styrene / rubber ratio is preferably 20/80 to 50/50.

The rosin phenol resin is a resin obtained by reacting rosin with phenols in the presence of an acid catalyst to add phenols to the rosin, and further includes a resin obtained by heating this to polymerize it. . In this addition reaction, the molar charge ratio of rosin and phenols is preferably about 1: 0.8 to 1: 1.5.

The rosin phenol resin used in the present invention is a resol type phenol resin obtained by addition reaction of phenols and formaldehyde in the presence of an alkali catalyst, in addition to the above adduct and its polymerized product. Also included are so-called rosin-modified phenolic resins obtained by addition reaction with rosin in the presence of an acid catalyst. The charging ratio in the formaldehyde addition reaction is preferably about 1 to 4 mol of phenols per mol of formaldehyde. Further, the charging ratio in the addition reaction of the resol type phenol resin and the rosin is preferably about 0.1 to 1.3 of the resol type phenol resin with respect to 1 mol of the rosin.

Examples of the rosin include gum rosin, wood rosin, tall oil rosin, polymerized rosin and the like.

Phenols include phenol, cresol, β-naphthol, pt-butylphenol, p
Any of octylphenol, p-nonylphenol, etc. that can be added to rosin can be used.

The rosin phenol resin used in the present invention preferably has a softening point of 120 ° C to 160 ° C.

On the other hand, the aromatic petroleum resin used in the present invention is obtained by polymerizing or copolymerizing a C9 to C10 unsaturated hydrocarbon which is a residual component extracted by BTX from a C6 to C11 heavy oil fraction produced by the decomposition of petroleum naphtha. The resulting resin. The aromatic petroleum resin also includes a copolymer resin containing some C5 fraction. As an aromatic petroleum resin, the softening point is 90 ℃ ~
Those having a temperature of 150 ° C. are preferably used.

The softening point of rosin phenol resin is 120 ° C.
If the softening point of the aromatic petroleum resin is less than 90 ° C., blocking tends to occur when the sheet coated with the adhesive is wound into a roll and the heat resistance becomes poor. Further, when the former softening point exceeds 160 ° C and the latter softening point exceeds 150 ° C, the thermal reactivation temperature becomes high.

Such a tackifying resin is commercially available and can be easily obtained.

Regarding the blending ratio of SBS and tackifier constituting the adhesive according to claim 1, the rosin phenol resin as the tackifier and the aromatic petroleum resin are 5 to 200 parts by weight per 100 parts by weight of SBS. Parts by weight, preferably 10 to 170 parts by weight, respectively. If the number of blended parts is outside the above range, the adhesive strength will be poor.

In the adhesive according to the present invention, if necessary, tackifiers other than rosin phenol resin and aromatic petroleum resin, SIS (styrene-isoprene-styrene block copolymer), inorganic filler, You may add a coloring agent, a stabilizer, etc.

Next, the invention according to claim 2 will be described. The adhesive according to claim 2, wherein the SBS contains a solvent in addition to SBS, a rosin phenol resin, an aromatic petroleum resin.
It is a solvent-based adhesive.

The solvent used dissolves the resin component in the adhesive, and examples thereof include toluene, xylene,
Hexane, ethyl acetate, methyl ethyl ketone, acetone and the like can be mentioned, and these can be used alone or in combination of two or more.

The solvent is usually added in an amount of 50 to 5000 parts by weight based on 100 parts by weight of the resin content in the adhesive. If the blending ratio of the solvent is less than 50 parts by weight, the viscosity increases and it becomes difficult to apply, and if it exceeds 5000 parts by weight, the drying time becomes long and the workability deteriorates, and the adhesiveness also deteriorates.

The other structure of the invention of claim 2 is the same as the structure of the invention of claim 1 described above.

Next, the invention according to claim 3 will be described. The polyolefin-based foam sheet used in the invention according to claim 3 is, for example, a resin made of one or a mixture of two or more polyolefin-based resins such as polyethylene, ethylene-vinyl acetate copolymer, and polypropylene, and a foaming agent and a crosslinking agent. Agent, polyfunctional monomer if necessary, colorant,
Filler is added, the resulting mixture is molded into the required shape, the molded product is irradiated or is heated below the decomposition temperature of the foaming agent to crosslink, and then the crosslinked product is decomposed at the decomposition temperature of the foaming agent. It can be obtained by a method such as heating to the above temperature for foaming, or simultaneously performing crosslinking and foaming.

The thickness of the polyolefin foam sheet is
The thickness is usually in the range of 2 mm to 100 mm, but the practically preferable thickness is in the range of 2 mm to 10 mm.

A surface-treated polyolefin foam sheet is obtained by applying the adhesive according to claim 1 or 2 to the surface of the polyolefin foam sheet and drying it as necessary.

To obtain a surface-treated polyethylene foam sheet, for example, when the adhesive is a hot-melt type, a hot-melt die coater, a hot-melt roll coater,
In the case of a solvent type, a method of applying a gravure roll coater, a spray gun or the like on one side of a polyolefin foam sheet in a thickness of about 10 to 20 μm and leaving it at room temperature is adopted.

Next, the invention according to claim 4 will be described. Typical examples of the fiber sheet composed of inorganic fibers used in the invention according to claim 4 are those in which inorganic fibers such as glass fiber, rock wool, asbestos, etc. are made alone or in a mixture, and mainly these are mixed with organic fibers. It is a thing.

Although any glass fiber can be used as the glass fiber, long fibers made of non-alkali glass as a raw material are preferable because they are bulky and have high strength when formed into a sheet.

The mixed paper of inorganic fibers and organic fibers should be heated to melt the organic fibers and bind the inorganic fibers to strengthen the fiber sheet, and at the same time, to improve the moldability and reduce the weight. It has the advantage that

As the organic fiber mixed with the inorganic fiber, any fiber made of a thermoplastic resin can be used. For example, synthetic fibers such as polyethylene, polypropylene, vinylon, polyvinyl chloride, polyacrylonitrile, polyurethane and polyamide, rayon, etc. Examples of the recycled fibers include semi-synthetic fibers such as acetate.

The fiber sheet made of such inorganic fibers is generally subjected to needle punching.

The thickness of the fiber sheet is usually 2 mm to 10 mm.
It is in the range of 0 mm, but the practically preferable thickness is 2 mm.
It is in the range of 10 mm.

The compounding ratios of SBS, rosin phenol resin, aromatic petroleum resin and solvent may be the same as those in the invention according to claims 1 and 2.

A surface-treated fiber sheet is obtained by applying the adhesive according to claim 1 or 2 to the surface of the fiber sheet and drying it if necessary.

To obtain the surface-treated fiber sheet, for example,
About 10 to 50 of the adhesive is applied to one side of the fiber sheet by using a hot melt roll coater, a gravure roll coater, or the like.
A method of applying it in a thickness of μm and leaving it at room temperature is adopted.

[0043]

The heat-insulating material sheet such as the polyolefin foam sheet surface-treated with the SBS hot melt type adhesive and the SBS solvent type adhesive according to the present invention has the same adhesive layer as the adhesive layer even after long-term storage. There is no rise in heat fusion temperature to the metal roofing material, there is no blocking even when the heat insulating sheet is stored in a rolled-up state, and adhesion of the adhesive layer after being laminated with the metal roofing material The heat resistance and water resistance are excellent.

[0044]

EXAMPLES Examples and comparative examples of the present invention will be described below. Example 1 a) Preparation of hot melt adhesive 40 parts by weight of SBS resin (Quintac BL-301: manufactured by Nippon Zeon: S / B = 35/65) and rosin phenol resin (Tamanol 803) as tackifier.
L: Arakawa Chemical Co., Ltd .: Softening point 140 ° C.) 30 parts by weight, and aromatic petroleum resin (high resin 1) as a tackifier.
30: Toho Chemical Co., Ltd .: C9 / C5 = 95/5: Softening point 1
30 parts by weight and 30 parts by weight at 160 ° C. with stirring, and then cooled to prepare an SBS hot melt adhesive.

B) Preparation of Foam Sheet This adhesive was applied at 180 ° C. with a hot melt die coater to one side of a polyethylene foam (thickness 4 mm, foaming ratio 40 times: Sekisui Chemical Co., Ltd .: trade name Softlon SK4004). A 10 μm thick coating was applied and left at room temperature for 1 day to obtain a polyethylene foam sheet having one surface treated.

C) Preparation of Insulating Metal Roofing Material Next, a polyester-coated steel sheet for a roofing material having a thickness of 1 mm is preheated at various temperatures on a hot plate,
The steel sheet and the surface-treated foam sheet were laminated so that the treated surface of the foam sheet was on the steel sheet side, and these were passed between two rolls for heat fusion. afterwards,
The obtained laminate was cooled to prepare a heat insulating metal roofing material.

D) Performance test (i) Peel adhesion test For the test piece made of the above heat insulating metal roof material, 20 ° C.
The 180 degree peel adhesion test was performed to evaluate the state of breakage of the foam sheet by visual observation (initial value). The surface-treated polyethylene foam sheet is stored at 80 ° C. for 7 days, 80 ° C. for 14 days, and 40 ° C. for 6 months,
Heat-insulating metal roofing materials were made in the same manner as above using these foam sheets, and these were subjected to 180 ° C. at 20 ° C.
The peeling adhesion test was performed and the state of breakage of the foam sheet was evaluated by visual observation.

(Ii) Water resistance and heat resistance test A laminate of the surface-treated polyethylene foam sheet and a steel sheet (heat fusion temperature 90 ° C.) was immersed in water at 20 ° C. for 150 hours, and an oven at 80 ° C. 180 ° C for 20 hours in an oven at 150 ° C
The peeling adhesion test was performed and the state of breakage of the foam sheet was evaluated by visual observation.

(Iii) Blocking Test The surface-treated surface and the back surface of the foam sheet are laminated, and 1 is placed on this.
The laminate was allowed to stand at 70 ° C. for 24 hours with a static load of 0 g / cm ² applied, then cooled to 20 ° C., and the blocking strength was measured.

In these tests, the evaluation criteria are as follows.

◯: Breakage occurred in polyethylene foam ×: Polyethylene foam peeled from the steel plate interface

The results of these tests are summarized in Table 1.

Example 2 In Example 1, aromatic resin was used as high resin RS.
21 (manufactured by Toho Chemical Co., Ltd .: softening point 120 ° C.). Other than that, the test piece was produced like Example 1 and each evaluation test was done. Table 1 shows the results.

Example 3 In Example 1, the rosin phenol resin was changed to Tamanol 900 (manufactured by Arakawa Chemical Co., Ltd .: softening point 130 ° C.).
Other than that, the test piece was produced like Example 1 and each evaluation test was done. Table 1 shows the results.

Example 4 In Example 1, the rosin phenol resin was changed to Tamanol 900 and the aromatic petroleum resin was changed to Hiresin RS21. Other than that, the test piece was produced like Example 1 and each evaluation test was done. Table 1 shows the results.

Example 5 In Example 1, the amount of the rosin phenol resin (Tamanol 803L) was changed to 10 parts by weight, and the amount of the aromatic petroleum resin (Hiresin 130) was changed to 50 parts by weight. Other than that, the test piece was produced like Example 1 and each evaluation test was done. Table 1 shows the results.

Example 6 In Example 1, a rosin phenol resin (Tamanol 8
03L) was changed to 50 parts by weight, and the amount of the aromatic petroleum resin (HIRESIN 130) was changed to 10 parts by weight. Other than that, the test piece was produced like Example 1 and each evaluation test was done. Table 1 shows the results.

Comparative Example 1 In Example 1, only 60 parts by weight of a rosin phenol resin (Tamanol 803L) was blended as a tackifier. Other than that produced the test piece like Example 1,
Each evaluation test was performed. The results are shown in Table 2.

Comparative Example 2 In Example 1, only 60 parts by weight of a rosin phenol resin (Tamanol 900) was blended as a tackifier.
Other than that, the test piece was produced like Example 1 and each evaluation test was done. The results are shown in Table 2.

Comparative Example 3 In Example 1, only 60 parts by weight of an aromatic petroleum resin (High Resin 130) was blended as a tackifier. Other than that, the test piece was produced like Example 1 and each evaluation test was done. The results are shown in Table 2.

Comparative Example 4 In Example 1, only 60 parts by weight of an aromatic petroleum resin (Hiresin RS21) was blended as a tackifier. Other than that, the test piece was produced like Example 1 and each evaluation test was done. The results are shown in Table 2.

Comparative Example 5 In Example 1, as a tackifier, an aromatic petroleum resin (HIRESIN RS9: manufactured by Toho Chemical Co., Ltd .: softening point 100 ° C.)
Only 60 parts by weight were compounded. Other than that, the test piece was produced like Example 1 and each evaluation test was done. The results are shown in Table 2.

Comparative Example 6 In Example 1, only 60 parts by weight of a terpene phenol resin (Mighty Ace G-125: Yasuhara Chemical Co., Ltd .: softening point 125 ° C.) was blended as a tackifier. Other than that, the test piece was produced like Example 1 and each evaluation test was done. The results are shown in Table 2.

Comparative Example 7 In Example 1, only 60 parts by weight of a terpene styrene resin (YS resin TO-125: manufactured by Yasuhara Chemical Co., Ltd .: softening point 125 ° C.) was blended as a tackifier. Other than that, the test piece was produced like Example 1 and each evaluation test was done. The results are shown in Table 2.

[0065]

[Table 1]

[Table 2] Example 7 a) Preparation of solvent-type adhesive 50 parts by weight of SBS resin (Quintac BL-301: manufactured by Zeon Corporation: S / B = 35/65) and rosin phenol resin (Tamanol 900: as a tackifier:
Arakawa Chemical Co., Ltd .: Softening point 130 ° C.) 25 parts by weight, and aromatic petroleum resin (high resin 13 as a tackifier as well.
0: Toho Chemical Co., Ltd .: C9 / C5 = 95/5: Softening point 13
(0 ° C.) 25 parts by weight are dissolved in 250 parts by weight of toluene,
An SBS solvent-based adhesive was prepared.

B) Preparation of foam sheet This adhesive was applied to a polyethylene foam (thickness 4 mm, expansion ratio 40 times: Sekisui Chemical Co., Ltd .: trade name Softlon SK4004) 20 μm on one side using a gravure roll coater.
And was left at room temperature for 7 days to obtain a polyethylene foam sheet having one surface treated.

C) Preparation of Insulating Metal Roofing Material Next, a polyester coated steel sheet for a roofing material having a thickness of 1 mm is preheated on a hot plate at various temperatures,
The steel sheet and the surface-treated foam sheet were laminated so that the treated surface of the foam sheet was on the steel sheet side, and these were passed between two rolls for heat fusion. afterwards,
The obtained laminate was cooled to prepare a heat insulating metal roofing material.

D) Performance test Each evaluation test was conducted on the test piece made of the above heat insulating metal roof material in the same manner as in Example 1. Table 3 shows the results.

Example 8 In Example 7, the aromatic petroleum resin was replaced with Hiresin RS.
Changed to 21. Other than that produced the test piece similarly to Example 7, and performed each evaluation test. Table 3 shows the results.

Comparative Example 8 In Example 7, only 50 parts by weight of a rosin phenol resin (Tamanol 900) was blended as a tackifier.
Other than that produced the test piece similarly to Example 7, and performed each evaluation test. Table 3 shows the results.

Comparative Example 9 In Example 7, only 50 parts by weight of an aromatic petroleum resin (High Resin 130) was blended as a tackifier. Other than that produced the test piece similarly to Example 7, and performed each evaluation test. Table 3 shows the results.

Comparative Example 10 In Example 7, only 50 parts by weight of an aromatic petroleum resin (High Resin RS21) was blended as a tackifier. Other than that produced the test piece similarly to Example 7, and performed each evaluation test. Table 3 shows the results.

Comparative Example 11 In Example 7, only 50 parts by weight of an aromatic petroleum resin (High Resin RS9) was blended as a tackifier. Other than that produced the test piece similarly to Example 7, and performed each evaluation test. Table 3 shows the results.

[0074]

[Table 3] Example 9 a) Preparation of adhesive 40 parts by weight of SBS resin (Quintac BL-301: manufactured by Zeon Corporation: S / B = 35/65) and rosin phenol resin (Tamanol 900: as a tackifier:
Arakawa Chemical Co., Ltd .: Softening point 130 ° C.) 30 parts by weight, and aromatic petroleum resin (high resin 13 as a tackifier as well.
0: Toho Chemical Co., Ltd .: C9 / C5 = 95/5: Softening point 13
30 parts by weight (0 ° C.) were mixed by stirring at 160 ° C. and then cooled to prepare an SBS hot melt adhesive.

B) Preparation of Foam Sheet This adhesive was applied to a hot melt roll coater at 180 ° C.
90 parts by weight of long glass fiber and 10 polyester fibers
A coating amount of 25 on one side of a fiber sheet (thickness 8 mm, Sekisui Chemical Co., Ltd .: product name Jieufen) made by mixing fibers with a weight part
The coating was applied at g / m ² and left at room temperature for 1 day to obtain a fiber sheet having one surface treated.

C) Preparation of Insulating Metal Roofing Material Next, a polyester-coated steel sheet having a thickness of 1 mm for a roofing material is preheated on a hot plate at various temperatures,
The steel sheet and the surface-treated fiber sheet are laminated so that the treated surface of the fiber sheet is on the steel sheet side.
It was passed between the main rolls for thermal fusion. Then, the obtained laminated body was cooled and the heat insulation metal roofing material was created.

D) Performance test (i) Peel adhesion test For the test piece made of the above heat insulating metal roof material, 20 ° C.
The 180 degree peel adhesion test was performed, and the state of breakage of the fiber sheet was evaluated by visual observation (initial value).

The surface-treated fiber sheet is
Stored at ℃ for 6 months, use this fiber sheet to make a heat insulating metal roofing material in the same manner as above.
A 180 ° peel adhesion test was performed at 0 ° C. to evaluate the state of breakage of the fiber sheet by visual observation.

(Ii) Water resistance and heat resistance test A laminate of the surface-treated fiber sheet and a steel sheet (heat fusion temperature 100 ° C.) was immersed in water at 20 ° C. for 150 hours, and then in an oven at 80 ° C. for 150 hours. A 180 ° peel adhesion test was carried out at 20 ° C. for a material left in an oven at 150 ° C. for 150 hours, and the state of breakage of the fiber sheet was evaluated by visual observation.

(Iii) Blocking Test The surface-treated surface and the back surface of the fiber sheet are laminated, and 50
The laminate was allowed to stand at 50 ° C. for 24 hours under a static load of g / cm ² and then cooled to 20 ° C. to measure the blocking strength.

In these tests, the evaluation criteria are as follows.

◯: The fiber sheet was broken ×: The fiber sheet was peeled from the steel sheet interface

The results of these tests are summarized in Table 4.

Example 10 In Example 9, the aromatic petroleum resin was replaced with Hiresin RS.
Changed to 21. Other than that, the test piece was produced like Example 9 and each evaluation test was done. The results are shown in Table 4.

Comparative Example 12 In Example 9, only 60 parts by weight of a rosin phenol resin (Tamanol 900) was blended as a tackifier.
Other than that, the test piece was produced like Example 9 and each evaluation test was done. The results are shown in Table 4.

Comparative Example 13 In Example 9, only 60 parts by weight of an aromatic petroleum resin (High Resin 130) was blended as a tackifier. Other than that, the test piece was produced like Example 9 and each evaluation test was done. The results are shown in Table 4.

Comparative Example 14 In Example 9, only 60 parts by weight of an aromatic petroleum resin (Hiresin RS21) was blended as a tackifier. Other than that, the test piece was produced like Example 9 and each evaluation test was done. The results are shown in Table 4.

Comparative Example 15 In Example 9, only 60 parts by weight of an aromatic petroleum resin (HIRESIN RS9) was blended as a tackifier. Other than that, the test piece was produced like Example 9 and each evaluation test was done. The results are shown in Table 4.

[0089]

[Table 4]

[0090]

As described above, the SBS hot melt adhesive and the SBS solvent adhesive according to the present invention are SBS.
In addition, two kinds of tackifying resins, rosin phenol resin and aromatic petroleum resin, are contained in required amounts,
Compared to conventional SBS adhesives, there is no increase in the heat-sealing temperature of the adhesive layer to the metal roofing material even after long-term storage of the foam sheet or fiber sheet coated with the adhesive,
Blocking does not occur even if the sheet is stored in a rolled state. Therefore, the adhesive property, heat resistance, and water resistance of the adhesive layer after being laminated with the metal roof material are excellent, and the adhesive according to the present invention is suitably used for bonding a heat insulating material for a metal roof.

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Claims (4)

[Claims] 1. A styrene-butadiene-styrene block copolymer 100 parts by weight, a rosin phenol resin 5-2.
A hot melt adhesive containing 00 parts by weight and 5 to 200 parts by weight of an aromatic petroleum resin. 2. 100 parts by weight of styrene-butadiene-styrene block copolymer, rosin phenol resin 5-2
A solvent type adhesive containing 00 parts by weight, 5 to 200 parts by weight of an aromatic petroleum resin and a solvent. 3. A polyolefin-based foam sheet which has been surface-treated by applying the adhesive according to claim 1 or 2 to the surface of the polyolefin-based foam sheet. 4. A fiber sheet which has been surface-treated by applying the adhesive according to claim 1 or 2 to the surface of a fiber sheet made of an inorganic fiber.