Adhesive composition and adhesive foam sheet
A foamed sheet and adhesive technology, applied in the field of adhesive foamed sheets, can solve the problems of undisclosed processability and adhesiveness, and achieve good adhesiveness, processability and adhesiveness. and the effect of improving workability
Inactive Publication Date: 2015-03-11
SIKA TECH AG
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- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
However, a means for coexistence of good processability and adhesiveness has not been disclosed
Method used
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Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1～4 and comparative example 1～4
[0089] The components shown in Table 1 below were mixed and kneaded with an open kneader to prepare an adhesive composition (the numerical values in Table 1 represent parts by weight relative to 100 parts by weight of rubber). The obtained adhesive composition was pressurized with an oil press to produce an unvulcanized sheet with a thickness of 2 mm.
[0090] (Penetration)
[0091] The unvulcanized sheets of Examples 1 to 4 and Comparative Examples 1 to 4 were cut into 50 mm in length and 30 mm in width, and 10 sheets were stacked to prepare test pieces with a thickness of 20 mm. The penetration of the obtained test piece was measured according to JISK2207. The larger the value of the penetration, the softer and the better the workability. The results are shown in Table 1 together.
[0092] (Shear strength)
[0093] The above-mentioned unvulcanized sheet (adhesive material) of Examples 1 to 4 and Comparative Examples 1 to 4 was cut into 25 mm in length and 25 mm in widt...
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Abstract
The present invention pertains to: an adhesive composition that contains 100 parts by weight of unvulcanized rubber and 20 to 100 parts by weight of an adhesive hydrocarbon resin with a softening point of 40°C or less; and an adhesive foam sheet provided with an adhesive layer containing said adhesive composition, and a foaming rubber layer containing a foaming agent, a vulcanizing agent and unvulcanized rubber. The present invention enables an adhesive composition, which is provided with both good adhesion and workability and is capable of providing an adhesive layer that suppresses cold flow, to be provided. The present invention further enables an adhesive foam sheet, which has an adhesive layer comprising the adhesive composition and suppresses cold flow, to be provided.
Description
technical field [0001] This application claims priority based on Japanese Patent Application No. 2012-143909 for which it applied in Japan on June 27, 2012, and uses the content here. [0002] The present invention relates to an adhesive composition, and furthermore, to an adhesive foamed sheet based on the adhesive composition. Background technique [0003] Conventionally, in order to satisfy requirements such as quiet performance in the interior space of an automobile, rubber-based foam materials have been filled in the voids of automobile bodies. Such a rubber-based foam material is generally obtained by attaching an unfoamed thermosetting foam sheet in which a foaming agent, a vulcanizing agent, etc. are mixed with unvulcanized rubber to the hollow part of the steel sheet for automobile body constituting the above-mentioned gap. The inner wall is formed by heat curing and foaming in a drying and heating process such as an electrophoretic coating line. Furthermore, the ...
Claims
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IPC IPC(8): C08L21/00B32B25/04C08L101/00C09J7/10C09J7/26
CPCC08L101/00B32B25/04C09J201/00C08L21/00C08J9/0061C08J2207/02C08J2457/02C08J2493/00C08J2445/02B32B5/18B32B7/12B32B2266/0207B32B2307/102B32B2605/00C08K2201/00C08J2203/04C09J2400/243C09J2421/00C09J2421/006C09J7/241C09J7/26Y10T428/2883B32B2305/77B32B2405/00C08J9/103C08J2309/00C09J7/10C09J2301/41C08L57/02C08L45/02C08L93/00B32B2250/02C08J2457/00C09J109/00C09J2409/00
Inventor 山田俊介
Owner SIKA TECH AG