Sealing tape and method and apparatus for its production, and method of repairs with it

• US 20030079821A1
• Filed: 10/01/2002
• Published: 05/01/2003
• Est. Priority Date: 04/02/1997
• Status: Abandoned Application

• Current Assignee: Meguro Chenical Industry Company Limited
• Original Assignee: Meguro Chenical Industry Company Limited
• Inventors: Meguro, Kitoshi
• Application Number:
  US10/260,518
• Publication Number:
  US 20030079821A1
• Time in Patent Office: Days
• US Class Current: 156/94
• CPC Class Codes: B32B 15/06 of natural rubber or synthetic rubber
• CPC Class Codes: B32B 25/04 comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material next to a layer of a particular substance B32B9/043; next to a bituminous or tarry layer B32B11/044; next to a water setting substance layer B32B13/042; next to a metal layer B32B15/06; next to a glass layer B32B17/063; next to a layer formed of natural mineral fibres or particles B32B19/043; next to a wood layer B32B21/045; next to a cellulosic plastic layer B32B23/046
• CPC Class Codes: B60R 13/06 Sealing strips sealing arrangements for vehicle windows, windscreens, non-fixed roofs, doors, or similar devices B60J10/00
• CPC Class Codes: Y10T 156/1028 by bending, drawing or stretch forming sheet to assume shape of configured lamina while in contact therewith

Abstract

The tape is free from any slack and separation even when it is applied and bonded to a metal joint portion while being bent. The tape, made of an unvulcanized material containing an unvulcanized rubber-base material, a vulcanization accelerator, an anti-oxidizing agent, a pigment and a bulk filler, is formed into an elongated shape having an upper and a lower surface and a predetermined thickness measured in a direction perpendicular to the lower surface or flat bottom surface 1. The upper surface forms a circularly-curved surface 2 in cross section. Since the tape is in an unvulcanized state, it is capable of being free bent when applied to the metal joint portion. After application of the tape to the metal joint portion, a paint is applied to the tape, which is followed by a heating process in which the tape is heated, and, therefore vulcanized.

Claims

1. A method of repair with a sealing tape, comprising the steps of:

applying a preformed sealing tape to a joint between a pair of metal surfaces or metal plates to bond said sealing tape to said joint while bending said sealing tape up to a substantially right angle when said sealing tape is applied to said joint, said sealing tape assuming an elongated shape with a bottom surface and a predetermined thickness measured in a direction perpendicular to said bottom surface and having a curved surface in an upper surface;

applying paint to the upper surface of said sealing tape thus bent and bonded to said joint;

said sealing tape being made of a sealing-tape material containing an unvulcanized rubber-base material and its vulcanization accelerator; and

heating said paint and said sealing tape thus bent and bonded, said sealing tape being fully and immediately vulcanized using a secondary-utilization of said heating step to become a final rubber product with a fixed resilient shape, said heating step being primarily required for a specified one of various types of painting processes including ones not requiring any heating step.