Process for applying a material to a member

• US 20040262810A1
• Filed: 05/27/2004
• Published: 12/30/2004
• Est. Priority Date: 06/26/2003
• Status: Active Grant

• Current Assignee: Zephyros, Inc.
• Original Assignee: L&L Products Inc.
• Inventors: Barz, William J., Moore, Patrick A.
• Granted Patent: US 7,479,245 B2
• Time in Patent Office: Days
• US Class Current: 264/259
• CPC Class Codes: B29C 2043/186 hot-melt or heat activated adhesives
• CPC Class Codes: B29C 43/027 having an axis of symmetry B29C43/102 takes precedence
• CPC Class Codes: B29C 43/18 incorporating preformed parts or layers, e.g. compression moulding around inserts or for coating articles B29C43/206 takes precedence
• CPC Class Codes: B29C 44/1271 the preformed parts being partially covered
• CPC Class Codes: B29C 70/76 Moulding on edges or extremities of the preformed part
• CPC Class Codes: B29K 2105/04 cellular or porous
• CPC Class Codes: B29L 2031/26 Sealing devices, e.g. packaging for pistons or pipe joints
• CPC Class Codes: B29L 2031/7096 Rings or ring-like articles

Abstract

There is disclosed a process for applying a material to a member having an adhesion surface. Typically, the process includes applying the material to a mold, the member or both. Thereafter, the material is at least partially conformed to the shape of the mold.

Claims

1. A process for applying a material to a member, the process comprising:

providing a member having a surface suitable for receiving a material;

providing a mold having at least one contour;

applying the material in a viscoelastic state to the mold, the member or both, wherein;

i) the material is positioned adjacent the at least one contour of the mold, the surface of the member or both with an automated apparatus; and

ii) the material is a polymeric sealing or reinforcing material;

conforming the material, in a viscoelastic state, at least partially to the shape of the at least one contour while the material is contacting the surface of the member; and

moving the member away from the mold with the material adhered to the surface of the member.

2. A process as in claim 1 wherein the automated apparatus includes an extruder, the at least one contour forms at least one cavity and the step of applying the material to the mold includes extruding the material into the at least one cavity of the mold.

3. A process as in claim 1 wherein the automated apparatus includes a robot for moving the extruder relative to the mold during application of the material to the mold.

4. A process as in claim 1 wherein the material is heat expandable.

5. A process as in claim 1 further comprising placing the member adjacent to the mold prior to the step of applying the material wherein the surface of the member includes a contour and the conforming step includes conforming the material to the contour of the mold and the contour of the member.

6. A process as in claim 1 wherein the member is part of an automotive vehicle.

7. A process as in claim 6 wherein the member is a cover fuel sender.

8. A process as in claim 1 further comprising activating the material to expand, cure or both in a paint processing step.

9. A process as in claim 1 wherein the step of providing a member includes placing the mold upon a rotating table.

10. A process as in claim 1 further comprising heating the surface of the member prior to contacting the surface of the member with the material.

11. A process as in claim 1 wherein the material is applied to the mold at a temperature below 100°

C.

12. A process as in claim 1 wherein the step of contacting the surface of the member to the material includes moving the member toward the mold such that the material is pressed and shaped against the at least one contour.

13. A process for applying a material to a member of an automotive vehicle, the process comprising:

providing a member of an automotive vehicle, the member having a surface suitable for receiving a material;

providing a mold having at least one cavity suitable for receiving a material;

applying the material in a viscoelastic state to the mold, the member or both, wherein;

i) the material is extruded into the at least one cavity with an automated apparatus that includes an extruder and a robot for moving the extruder relative to the mold; and

ii) the material is a sealing or reinforcing material;

conforming the material, in a viscoelastic state, at least partially to the shape of the at least one cavity while the material is contacting the surface of the member;

moving the member away from the mold with the material adhered to the surface of the member; and

activating the material at elevated temperatures during a paint processing step of the automotive vehicle.

14. A process as in claim 13 further comprising placing the member adjacent to the mold prior to the step of applying the material wherein the surface of the member includes a cavity and the conforming step includes conforming the material to the cavity of the mold and the at least one cavity of the member.

15. A process as in claim 13 wherein the member is a cover fuel sender.

16. A process as in claim 13 wherein the step of providing a member includes placing the mold upon a rotating table.

17. A process as in claim 13 further comprising heating the surface of the member prior to contacting the surface of the member with the material.

18. A process as in claim 13 wherein the material is applied to the mold at a temperature below 100°

C.

19. A process for applying a material to a member of an automotive vehicle, the process comprising:

providing a member of an automotive vehicle, the member having a surface suitable for receiving a material, the member being a cover fuel sender;

providing a mold having at least one cavity suitable for receiving a material;

applying the material to the mold, the member or both in a viscoelastic state at a temperature below 70°

C., wherein

i) the material is extruded into the at least one cavity with an automated apparatus that includes an extruder and a robot for moving the extruder relative to the mold; and

ii) the material is heat expandable and heat curable;

conforming the material, in a viscoelastic state, at least partially to the shape of the at least one cavity while the material is contacting the surface of the member;

moving the member away from the mold with the material adhered to the surface of the member; and

curing the material at elevated temperatures during a paint processing step of the automotive vehicle.

20. A process as in claim 19 further comprising placing the member adjacent to the mold prior to the step of applying the material wherein the surface of the member includes a cavity and the conforming step includes conforming the material to the cavity of the mold and the at least one cavity of the member.