Adhesive composition and adhesive sheet for slide rail, and method for fixing slide rail

• US 9,376,601 B2
• Filed: 09/03/2010
• Issued: 06/28/2016
• Est. Priority Date: 09/14/2009
• Status: Active Grant

• Current Assignee: Lintec Corporation
• Original Assignee: Lintec Corporation
• Inventors: Ono, Yoshitomo, Tominou, Tadahiro, Amino, Yumiko, Yaguchi, Shigeyuki
• Primary Examiner(s): Walshon, Scott R
• Application Number:
  US13/395,783
• Publication Number:
  US 20120270043A1
• Time in Patent Office: 2,125 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: C08K 2003/2265 of iron
• CPC Class Codes: C08K 2201/01 Magnetic additives
• CPC Class Codes: C08K 3/22 of metals
• CPC Class Codes: C09J 11/04 inorganic
• CPC Class Codes: C09J 167/00 Adhesives based on polyesters obtained by reactions forming a carboxylic ester link in the main chain based on polyester-amides C09J177/12; based on polyester-imides C09J179/08; Adhesives based on derivatives of such polymers
• CPC Class Codes: C09J 2301/304 the adhesive being heat-activatable, i.e. not tacky at temperatures inferior to 30°C
• CPC Class Codes: C09J 2301/312 parameters being the characterizing feature
• CPC Class Codes: C09J 2301/408 additives as essential feature of the adhesive layer
• CPC Class Codes: C09J 2400/10 Presence of inorganic materials
• CPC Class Codes: C09J 9/00 Adhesives characterised by their physical nature or the effects produced, e.g. glue sticks C09J7/00 takes precedence
• CPC Class Codes: H01F 1/344 Ferrites, e.g. having a cubic spinel structure (X2+O)(Y23+O3), e.g. magnetite Fe3O4
• CPC Class Codes: H01F 1/37 in a bonding agent
• CPC Class Codes: Y10T 156/10 Methods of surface bonding and/or assembly therefor
• CPC Class Codes: Y10T 428/2857 including metal or compound thereof or natural rubber

Abstract

An adhesive composition for slide rail exhibits excellent workability in attaching a slide rail to a vehicle body and has a strong adhesive force after heating, the magnetic flux density of which can be lowered, which sustains the strong adhesive force after heating and then returning to room temperature so as to allow the firm fixation of the slide rail to the vehicle body, and which can lower the volume of the noise caused by opening/closing of a door. Specifically disclosed is an adhesive composition for slide rail which includes a hot-melt adhesive and a ferromagnetic substance, wherein the composition shows a density at 20° C. of 1.4-4.5 g/cm3 and has such magnetic properties that the magnetic flux density of an adhesive sheet, that is obtained by molding the composition, at a position 1 cm apart from the surface of the adhesive sheet is 10 mT or more.

Claims

1. An adhesive composition for a slide rail, which comprises a hot-melt adhesive and a ferromagnetic material, wherein a density at 20°

C. of the composition is 1.4 to 4.5 g/cm3, and the composition has a magnetism such that the magnetic flux density at a position which is 1 cm away from a surface of an adhesive sheet obtained by forming the composition is 10 mT or more, the ferromagnetic material is a magnetic powder, the mixing ratio of the magnetic powder is in the range of 92;

8 to 45;

55 in volume ratio of the hot-melt adhesive and the magnetic powder, and the surface magnetic flux density after heating at 180°

C. for 40 minutes is not more than 3 mT, and wherein the adhesive composition does not contain a foaming agent.

2. The adhesive composition for a slide rail as claimed in claim 1, wherein the ferromagnetic material is a ferrite.

3. The adhesive composition for a slide rail as claimed in claim 2, wherein the hot-melt adhesive is a polyester resin based hot-melt adhesive.

4. An adhesive sheet for a slide rail which is a sheet having a layer composed of the adhesive composition for a slide rail as claimed in claim 2.

5. A laminate of a slide rail and an adhesive sheet, wherein the laminate comprises the adhesive sheet as claimed in claim 4 and a slide rail laminated on the adhesive sheet.

6. An adhesive sheet for a slide rail which is a sheet having a layer composed of the adhesive composition for a slide rail as claimed in claim 3.

7. A laminate of a slide rail and an adhesive sheet, wherein the laminate comprises the adhesive sheet as claimed in claim 6 and a slide rail laminated on the adhesive sheet.

8. The adhesive composition for a slide rail as claimed in claim 1, wherein the hot-melt adhesive is a polyester resin based hot-melt adhesive.

9. An adhesive sheet for a slide rail which is a sheet having a layer composed of the adhesive composition for a slide rail as claimed in claim 8.

10. A laminate of a slide rail and an adhesive sheet, wherein the laminate comprises the adhesive sheet as claimed in claim 9 and a slide rail laminated on the adhesive sheet.

11. An adhesive sheet for a slide rail which is a sheet having a layer composed of the adhesive composition for a slide rail as claimed in claim 1.

12. An adhesive laminate of a slide rail which comprises the adhesive sheet as claimed in claim 11 and a slide rail laminated on the adhesive sheet.

13. The adhesive composition of claim 1, wherein the hot-melt adhesive has a melting point in the range of 80°

C. to 200°

C.

14. The adhesive composition of claim 1, wherein the adhesive composition has a viscosity of 5 to 500 Pa·

s at 130°

C.

15. The adhesive composition of claim 1, wherein the adhesive composition has a viscosity of 15 to 200 Pa·

s at 130°

C.

16. The adhesive composition of claim 1, wherein the adhesive composition has a shearing force after heat adhesion at 150°

C. for 10 minutes of not less than 250 N.

17. A method for attaching a slide rail which comprises temporarily fixing a slide rail on a member of a body with the adhesive sheet for the slide rail as claimed in claim 11, and then fixing the slide rail by heating the adhesive sheet for slide rail.

18. A method for attaching a slide rail which comprises temporarily fixing a slide rail on a member of a body with the adhesive sheet for the slide rail as claimed in claim 4, and then fixing the slide rail by heating the adhesive sheet for slide rail.

19. A method for attaching a slide rail which comprises temporarily fixing a slide rail on a member of a body with the adhesive sheet for the slide rail as claimed in claim 9, and then fixing the slide rail by heating the adhesive sheet for slide rail.

20. A method for attaching a slide rail which comprises temporarily fixing a slide rail on a member of a body with the adhesive sheet for the slide rail as claimed in claim 6, and then fixing the slide rail by heating the adhesive sheet for slide rail.