Coating apparatus – Solid applicator contacting work – Movably mounted applicator
Reexamination Certificate
1999-11-03
2001-11-20
Edwards, Laura (Department: 1734)
Coating apparatus
Solid applicator contacting work
Movably mounted applicator
C118S258000, C118S235000, C118S067000
Reexamination Certificate
active
06319319
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to a coating spreading machine, and particularly to one which can apply protective resin layer onto a top layer of a plastic tile.
Referring to
FIG. 4
, a common plastic tile consists of a basic part
10
, an intermediate part
101
and a printed layer
102
having design thereon; the intermediate part
101
is provided for making the printed layer to be seen clearly. Protective resin
103
is applied onto the printed layer
102
in order for the printed layer
102
to be well protected.
The manufacturing process of using a heretofore known resin spreading machine includes the following steps:
(1) preparing a roller of printed layer, and preparing a roller of intermediate part;
(2) feeding a basic part of plastic tile by a feeding machine;
(3) combining the printed layer and the intermediate part with the basic part by using a rolling machine; the printed layer and the intermediate part are firmly coupled to the basic part after being rolled over by the rolling machine;
(4) cutting the above said semi-finished plastic tile into pieces of predetermined size;
(5) sending the pieces of semi-finished products to a coating spreading factory for applying resin onto the printed layer; and drying same after application of the resin;
(6) sending the finished products back to the original factory.
It is found that the above process has undesirable features as follows.
1. After the semi-finished products are cut into pieces, they have to be delivered to another factory for applying the resin layer thereonto. Consequently, the cost increases due to the extra delivery.
2. After the printed layer and the intermediate part are coupled to the basic part, the semi-finished products are cut into pieces and delivered to another factory. So, the semi-finished tiles are likely to be damaged during the cutting and under the delivery.
3. Because the printed layer is coupled to the basic part before application of the resin, the protective resin cannot be evenly spreaded on the printed layer very easily with the prior art resin spreading machine.
SUMMARY OF THE INVENTION
Therefore, it is a main object of the present invention to provide a coating spreading machine, by which the process of making a plastic tile with protective resin thereon can be simplified, and have relatively low failure rate of the products.
The coating spreading machine of the present invention comprises:
a feeding device for feeding a printed layer film rolled up on a roller;
a coating spreading device including:
(i) a transmission wheel being capable of turning with a transmission device
(ii) a nozzle capable of ejecting liquid resin onto said transmission wheel;
(iii) a steel wheel arranged under said transmission wheel for making said liquid resin to be evenly spreaded on said transmission wheel, the space between the transmission wheel and the steel wheel being adjustable to controlling the thickness of the resin spreaded on the transmission wheel;
(iv) a pressing wheel arranged adjacent to said transmission wheel, said printed layer film being passed through between said transmission wheel and said pressing wheel for said resin spreaded on said transmission wheel to be coupled to said printed layer film by means of said pressing wheel;
a drying device arranged above said coating spreading device for drying said resin coupled to said printed layer film; and,
a rolling device provided for rolling up said printed layer film around a roller after said film with resin coupled thereto comes out of said drying device.
The coating spreading machine of the present invention can combine the printed layer film with the resin directly before same is coupled to a basic part of a plastic tile. The process for making a plastic tile is relatively simple and the failure rate of the product is reduced.
REFERENCES:
patent: 3078179 (1963-02-01), Kuhn et al.
patent: 5817215 (1998-10-01), Kinnunen
patent: 5972113 (1999-10-01), Le Riche et al.
Edwards Laura
Rosenberg , Klein & Lee
Tadesse Yewebdar T.
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