JPH0417108B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for forming a coated surface of arbitrary constant width on a continuous surface.

(Background of the invention) Long continuous planar objects such as plastic films, thin metal plates, or paper (hereinafter simply referred to as planar objects)
In the process of processing, an operation may be performed to form a coated surface (hereinafter referred to as coated surface) of paint, resin, medicine, etc. (hereinafter referred to as coating agent) on the sheet-like object. Usually in this operation, Figure 1 (schematic diagram of the process to which the present invention method or conventional method is applied)
As shown in FIG. 1, the sheet-shaped object 1 is sent from the pre-operation step A to a step B (referred to as a coating step) in which an operation for forming the above-mentioned coated surface is performed. In the coating step B, the sheet-shaped object 1 is mounted on a conveying device, for example, a roll 2, and moved, and a coating surface is formed by applying a coating material 4 supplied by a coating element 3 onto the sheet-like object 1.

In this operation, the width of the planar object 1 is often changed depending on the product, and accordingly, the width of the coated surface must also be changed in accordance with the width of the planar object 1. Usually, the width of the coating surface is changed by converting at least a part of the coating element 3, which requires preparation of a large number of conversion parts and the effort of converting them.
Time was a big issue.

Therefore, the inventors of the present invention have conducted intensive studies to find a method that can easily change the width of the coating surface, and have found that if a specific method is adopted, surface shapes of various widths can be obtained using a single coating element 3. It has been found that the corresponding width of the coating surface can be easily set on the object 1.

(Object of the Invention) Therefore, the object of the present invention is to easily apply a coating surface of a width corresponding to the width of various types of surface objects on a continuous surface object using a single application element. The purpose is to provide a method for forming.

(Structure) The above purpose is: A. In a method of forming a coating surface of a constant width on a continuous planar object, applying an application element onto the continuous planar object that is mounted on a conveyance device and moving. When forming a coated surface with a constant width W narrower than the width l, a thin film or sheet is overlapped on each of both edges of the planar object, and the distance L1 between the opposing inner edges of the film or sheet is set as above. The coating agent is applied onto the planar object so that the coating agent is substantially the same as the width W and the distance L2 of the outer edge of the film or sheet is wider than the coating width l, The sheet is continuously or intermittently delivered and taken up by a delivery device and a take-up device provided before and after the coating device, and the film or sheet is placed on a planar object immediately before passing through the coating device. A coating surface of a constant width on a continuous sheet-like object characterized by being pressed, applying a coating agent on the sheet-like object in this pressed state, and removing the coating agent from the sheet-like object immediately after applying the coating agent. How to form.

B. A method for forming a coated surface of a constant width on a continuous planar object as described in A above, characterized in that the conveying device is a roll.

C. The film or sheet moves in the same direction as the moving direction of the planar object, and is characterized by being moved at an average speed slower than the speed of the planar object. A method for forming a coated surface of a constant width on a continuous planar object according to A above.

D. Application of a constant width onto a continuous planar object according to A above, characterized in that the film or sheet is moved in a direction opposite to the moving direction of the planar object at a speed slower than the speed of the planar object. How to form surfaces.

E. The film or sheet is continuously or intermittently fed out and taken up by a feeding device and a take-up device provided before and after the coating device, and the film or sheet is flattened immediately before passing through the coating device. A coating agent is applied onto the surface object in this pressed state, and immediately after the coating agent is applied, the coating agent is removed from the surface object, and the feeding device and the take-up device The coating agent can be easily moved in the width direction of the object, and the width of application of the coating agent onto the surface object can be arbitrarily set. method of forming the coating surface.

This is achieved by

A detailed description will be given below with reference to FIGS. 1 and 2 (a perspective view of the portion shown in FIG. 1).

(Details of configuration) First, a method of forming a coating surface of a constant width on a continuous planar object mounted on a conveying device and moving;
The main parts of the process are the same as the conventional one shown in FIG.

The sheet material 1 sent from the pre-process A to the coating surface forming step B is mounted on a conveying device, preferably a roll 2, and moves as the sheet rotates. Note that the planar object in the present invention includes plastic film,
Refers to long continuous planar objects such as thin metal plates and paper.

When the planar object 1 is placed on the surface of the roll 2 and forms a curved surface, the coating agent 4 is applied to the surface by the application element 3. The method of easily changing the width of the coating surface in the present invention can be applied to most of the many commonly used coating methods such as air doctor coaters, roll coaters, curtain coaters, extrusion coaters, etc. The type of application element 3 is not particularly limited.

Further, the coating agent in the present invention refers to a liquid such as an organic or inorganic compound or a solution thereof that is applied to the surface-like object.

In the coating surface forming step of the present invention, a film or sheet 5 is placed so as to overlap the edge 1A of the planar object 1 before and after the coating element 3, and is made to act specifically.

That is, in FIG. 2, a thin film or sheet 5 is overlapped on both edges 1A of the continuous planar object 1, and the inner edge L1 of these two films or sheets is made smaller than the width W' of the planar object 1. By supplying the coating agent 4 from the coating element so that the distance L2 between the outer edges of the film or sheet 5 is wider than the coating width l of the coating element 3, the coating material 4 is coated onto the surface-like object 1. A coated surface with a constant width W is formed. The width W of the coated surface is substantially equal to the distance L1 between the inner edges of the film or sheet 5, but by adjusting the overlapping state of the film or sheet 5 at both edges 1A of the planar object 1, the width W of the film or sheet 5 can be adjusted. Alternatively, it is possible to make the distance L1 between the inner edge of the sheet 5 somewhat wider, and by narrowing the overlapping portion and adjusting the overlapping state, it is possible to overlap the coated surface substantially to the full width W' of the surface object. You can also widen W.

The coating agent 4 supplied onto the film or sheet 5 is taken up together with the film or sheet 5, but if it oozes or drips from the take-up section 7, it can be removed by installing a scraping device or a tray. do.

The film or sheet 5 is supplied from a feeding device 6 and is installed to be taken up by a take-up device 7. The information is updated sequentially so as not to hinder the formation of a stable coating surface on the surface. Therefore, it is desirable that the film or sheet used in the present invention be one that is difficult to soak in the coating agent, is not easily damaged by friction with the planar object 1 or the roll 2, and does not damage the edge 1A of the planar object. , generally plastic films or sheets.

The above-mentioned feeding device and take-up device are provided in the vicinity of the front and back of the application element, and the above-mentioned film or sheet exhibits an independent movement different from the movement of the planar object, and the film or sheet is attached to the planar object. omitting the process of peeling and the process of peeling,
The amount of film or sheet that is peeled off and becomes waste is significantly reduced, which reduces the consumption of materials and also has the effect of reducing waste.

Further, the sending device 6 and the taking device 7 are
They are attached so as to be slidable on fixed shafts 8 and 9, respectively, so that the width of the planar object 1 can be adjusted.
The width W of the coated surface can be changed quickly and easily in response to a change in W'.

Although FIG. 2 shows only one side of the film or sheet 5, a similar device may be provided on the opposite edge if necessary. Although FIG. 2 depicts the film or sheet 5 moving in the opposite direction to the moving direction of the planar object 1, it is not necessarily limited to such a moving direction depending on the method of the application element 3. This is as stated above.

(Effects and Applications) As described above, by adopting the present invention, it becomes possible to continuously produce sheet objects with coating surfaces that match the product type, and it can be widely used in industrial fields where such effects are required. It is possible.

[Brief explanation of drawings]

FIG. 1 is a process diagram to which the method of the present invention is applied,
FIG. 2 is an enlarged view of the portion shown in FIG. 1. 1... Planar object, 2... Roll, 3... Coating element, 4... Coating agent, 5... Film or sheet,
6... Sending device, 7... Picking up device, 8...
...Feeding device shaft, 9...Take-up device shaft.

Claims (1)

[Scope of Claims] 1. In a method for forming a coating surface of a constant width on a continuous planar object, the application width of an application element is applied to the continuous planar object that is mounted on a conveyance device and is moving. When forming a coated surface with a constant width W narrower than l, a thin film or sheet is overlapped on each of both edges of the planar object, and the distance L1 between the opposing inner edges of the film or sheet is set as the width. The coating agent is applied onto the planar object so that the distance L2 between the outer edge of the film or sheet is wider than the coating width l, and the distance L2 between the outer edge of the film or sheet is substantially the same as W, The film or sheet is continuously or intermittently delivered and taken up by a delivery device and a take-up device provided before and after the coating device, and the film or sheet is pressed onto a planar object immediately before passing through the coating device. The coating agent is applied onto the sheet-like object in this pressed state, and the coating agent is removed from the sheet-like object immediately after being applied. How to form. 2. A method for forming a coating surface of a constant width on a continuous planar object according to claim 1, wherein the conveying device is a roll. 3. The film or sheet is moved in the same direction as the moving direction of the planar object, and the film or sheet is moved at an average speed slower than the speed of the planar object. A method for forming a coated surface of a constant width on a continuous planar object according to claim 1. 4. Claim 1, characterized in that the film or sheet is moved in a direction opposite to the moving direction of the planar object at a speed slower than the speed of the planar object.
A method of forming a coated surface of a constant width on a continuous planar object as described in Section 1. 5. The film or sheet is continuously or intermittently delivered and taken up by a delivery device and a take-up device provided before and after the coating device, and the film or sheet has a surface shape immediately before passing through the coating device. A coating agent is applied onto the surface object in this pressed state, and immediately after the coating agent is applied, the coating agent is removed from the surface object, and the feeding device and the take-up device A continuous surface according to claim 2 or 3, which is easily movable in the width direction of the object and can arbitrarily set the width of application of the coating agent onto the surface object. A method of forming a coating surface of a constant width on a shaped object.