Sealing tape and method and apparatus for its production, and method of repairs with it
a technology of sealing tape and repair method, which is applied in the direction of sealing, film/foil adhesive, transportation and packaging, etc., can solve the problems of uneven finishing surface of sealing agent e thus applied to the joint, failure of the joint of the body panel thus repaired to take the same shape as the joint of the body panel in a new car, and difficulty for the worker to keep constan
Inactive Publication Date: 2002-01-31
MEGURO KITOSHI
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- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Benefits of technology
The unvulcanized sealing tape can be freely shaped and bonded to metal joints, ensuring a consistent, resilient seal that maintains its shape even after vulcanization, improving the surface finish and durability of car body joints without the need for precise manual application.
Problems solved by technology
In such manual operations, it is very difficult for the worker to keep constant the amount of the sealing agent E applied to the course of the joint even when he concentrates his attention on his work in which he must constantly squeeze the sealing agent E out of the tube as he moves the tube along the course of the joint.
In other words, in most cases, the worker fails to accurately trace the course of the joint, which results in an uneven finishing surface of the sealing agent E thus applied to the joint.
Due to this failure, the joint of the body panels thus repaired fails to assume the same shape as that of a joint of body panels in a new car.
In this case, the sealing tape 10 often slacks in or separate from the corner portion G of the door, which impairs the door in its surface finish quality.
Consequently, such rubber material not vulcanized is not adequate for the purpose of the sealing tape which must keep its shape for a long period of time in use.
However, when the unvulcanized rubber-base material is used and extracted from the cylinder in the conventional method described above, it is not possible for the unvulcanized rubber-base material to assume a fixed shape as defined by the bottom opening of the cylinder, which makes it impossible to produce an elongated unvulcanized sealing tape.
When a car body panel is damaged, it is necessary to repair such damaged panel.
Method used
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Embodiment Construction
[0105] Now, an example of the sealing tape 10, 11 of the present invention will be described.
[0106] Mixed in the hopper 101 at a temperature of approximately 50 degrees centigrade to prepare the sealing-tape material were: a 40 parts by weight of the unvulcanized rubber-base material; a 10 parts by weight of the sulfur oxides as the vulcanization accelerator; a 12 parts by weight of polybutene as the anti-oxidizing agent; a 10 parts by weight of titanium oxides as the pigment; and, a 28 parts by weight of calcium carbonate as the bulk filler.
[0107] Namely, the composition of the sealing-tape material is shown in the following Table 1:
1 TABLE 1 rubber-base material 40 parts by weight sulfur oxides 10 parts by weight polybutene 12 parts by weight titanium oxides 10 parts by weight calcium carbonate 28 parts by weight
[0108] As shown in FIG. 2, the sealing-tape material thus prepared was then formed into the substantially square-shaped sheet 201 having a length of 12 centimeters in the ...
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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.
Description
[0001] 1. Field of the Invention[0002] The present invention relates to a sealing tape and a method and apparatus for its production, and a method of repairs with it, and more particularly to a sealing tape for covering, in a car body, an exposed metal surface, a joint between metal plates, a shoulder portion in joint, and like stepped portions.[0003] 2. Description of the Prior Art[0004] In the manufacture of automobiles, it has been the practice to apply a sealing agent to joint portions and joint shoulder portions in car bodies such as body panel joints and hemming portions in door and hoods of the car bodies to prevent water and dust from entering the car bodies. More specifically, as shown in FIG. 15, in case that an inner metal plate B is inserted into and jointed to a bent portion C of an outer metal plate "A" which is provided with the bent portion C in its end portion, a joint shoulder portion D extending in a direction perpendicular to the plane of the drawing paper is cov...
Claims
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IPC IPC(8): B32B15/06B32B25/04B60R13/06C09J7/02F16J15/14
CPCB32B15/06B32B25/04B60R13/06C09J7/0271F16J15/14Y10T156/1087Y10S277/944Y10T428/2857Y10T428/2883Y10T428/28Y10T156/1067Y10S277/936C09J7/241
InventorMEGURO, KITOSHI
OwnerMEGURO KITOSHI