Coating processes – Removable protective coating applied – Metal base
Reexamination Certificate
1998-11-19
2001-02-13
Beck, Shrive (Department: 1762)
Coating processes
Removable protective coating applied
Metal base
C427S154000, C427S286000, C427S348000, C427S359000, C427S378000, C427S420000, C118S315000, C118S323000
Reexamination Certificate
active
06187377
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to a process for forming a protective film of a strippable paint on a coated surface of an automobile in order to temporarily protect the coated surface, and particularly, to a process for forming a protective film for temporarily protecting a coated surface of a completed automobile in the transportation of the automobile.
BACKGROUND ART
To avoid that an outer surface of a completed automobile suffers a contamination due to soot, dusts, iron powder rust, acid rain and the like, a corrosion due to excrement of birds and insects, or a damage such as a scratch during transportation or storage of the completed automobile, it is conventionally carried out that the coated surf ace of the completed automobile is temporarily protected by a protective film formed from the strippable paint. In a technique disclosed in Japanese Patent Application Laid-open No. 6-142604, for example, a strippable paint is applied onto coated surfaces by a roller, a brush or the like along an outer peripheral edge of a region to be protected, and after or before such application, the strippable paint is sprayed to a region narrower than the region to be protected, so that an overlapped-coated zone is formed in the double-coated regions.
In the above conventional technique, however, dusts of a coating material may be spread to a wider range during spraying operation of the strippable paint, whereby the dusts may be scattered beyond the overlapped-coated zone to adhere to a portion out of the region to be protected. Therefore, a masking step is required, and/or an inspecting/correcting step is required, resulting in an increase in number of steps.
In applying the strippable paint by a roller, a brush or the like, an operation of putting the strippable paint on the roller or the brush must be repeated many times, which is troublesome. In this case, it is considered that a self-contained roller brush is used, but because a coating material supplying hose is connected to the self-contained roller brush, the direction of movement of the self-contained roller brush is limited; the weight is increased, and the operational load is increased.
The present invention has been accomplished with such circumstances in view, and it is an object of the present invention to provide a process for forming a protective film on coated surfaces of an automobile, wherein it is possible to prevent the strippable paint from being adhered to the portion out of the region to be protected, thereby simplifying the operating steps and alleviating the operational load.
DISCLOSURE OF THE INVENTION
To achieve the above object, according to a first aspect and feature of the present invention, there is provided a process for forming a protective film of a strippable paint onto a coated surface of an automobile to temporarily protect the coated surface, comprising a first step of pouring down the strippable paint onto the coated surface within a region to be protected, from a plurality of nozzles disposed above the coated surface of the automobile in parallel to one another in a widthwise direction of the automobile, while controlling the number of nozzles used to discharge the strippable paint, in accordance with an extent of the region to be protected; a second step of spreading the strippable paint over an entirety of the coated surface in the region to be protected; and a third step of drying the strippable paint on the coated surface to form the protective film, wherein the first to third steps are carried out in the mentioned order. According to a second aspect and feature of the present invention, there is provided a process for forming a protective film of a strippable paint onto a coated surface of an automobile to temporarily protect the coated surface, comprising a first step of pouring down the strippable paint onto the coated surface within a region to be protected, from a plurality of nozzles disposed above the coated surface of the automobile, while controlling the amount of the strippable paint discharged from the nozzles in accordance with an extent of the region to be protected; a second step of spreading the strippable paint over an entirety of the coated surface in the region to be protected; and a third step of drying the strippable paint on the coated surface to form the protective film, wherein the first to third steps are carried out in the mentioned order. Further, according to a third aspect and feature of the present invention, there is provided a process for forming a protective film of a strippable paint onto a coated surface of an automobile to temporarily protect the coated surface, comprising a first step of pouring down the strippable paint onto the coated surface within a region to be protected, from a plurality of nozzles disposed above the coated surface of the automobile, while controlling the number of nozzles used to discharge the strippable paint, and the amount of strippable paint discharged from the used nozzles, in accordance with an extent of the region to be protected; a second step of spreading the strippable paint over an entirety of the coated surface in the region to be protected; and a third step of drying the strippable paint on the coated surface to form the protective film, wherein the first to third steps are carried out in the mentioned order.
With such first to third features, the region covered by each of the nozzles can be relatively reduced, whereby the pouring-down of the strippable paint can be efficiently carried out, and it is possible to prevent dusts of the coating material from being scattered to a wide range, thereby eliminating the need for the masking step and/or the inspecting/correcting step and to reduce the operating steps, and further to alleviate the operational load.
According to a fourth aspect and feature of the present invention, at the first step in the first, second or third feature, the strippable paint is poured down onto the coated surface while being run in a zigzag manner, whereby the pouring-down of the strippable paint in an amount appropriately corresponding to the extent of the coated surface of the automobile can be efficiently carried out.
According to a fifth aspect and feature of the present invention, at the first step in the first, second or third feature, the strippable paint is poured down onto the coated surface within a predetermined area established smaller than the region to be protected, whereby an appropriate amount of the strippable paint corresponding to the extent of the coated surface can be efficiently carried out, while reliably preventing overflow and flowing-down out of the region to be protected.
According to a sixth aspect and feature of the present invention, at the second step in any of the first to fifth features, the strippable paint poured down onto the coated surface is spread by a roller, whereby the thickness of the film on the completion of the spreading over can always be stabilized to contribute to an enhancement in quality of the protective film and to facilitate the peeling-off operation.
According to a seventh aspect and feature of the present invention, at the second step in any of the first to fifth features, the strippable paint poured down onto the coated surface is spread by spraying of air from obliquely above the coated surface, whereby the contact of equipment with the strippable paint can be avoided in spreading the strippable paint, thereby facilitating maintenance of an air spraying device, and preventing generation of unevenness in uniformity of the spreading attendant on the contact with the equipment and generation of overflow of the strippable paint from the equipment to further enhance the quality. Further, the thickness of the film on the completion of the spreading can always be stabilized to facilitate the peeling-off operation.
According to an eighth aspect and feature of the present invention, the second step in the fifth feature comprises a first spreading step of spreading the strippable paint remaining in a poured-down state within the pred
Akasaka Kensaku
Kurota Hisashi
Obara Hideki
Tojo Hideaki
Arent Fox Kintner & Plotkin & Kahn, PLLC
Beck Shrive
Calcagni Jennifer
Honda Giken Kogyo Kabushiki Kaisha
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