JPS594465A - Method for coating chemical on sheetlike material - Google Patents

Abstract

PURPOSE:To coat chemical on one side of a material efficiently, by interposing an auxiliary sheet between a pressing roll and a coating roll and supplying a sheet-like material between the auxiliary sheet and coating roll. CONSTITUTION:When a sheetlike material 16 such as a film, thin plate etc. is supplied between a beltlike sheet 14 and a coating roll 13, the sheet 14 and material 16 move in the direction of the arrow being held by the coating roll 13 with rotation of a pressing roll 10, and chemical 12 adhering on the coating roll 13 is coated on one side of the material 16. At this time, the chemical does not adhere to the other side of the material 16 as it is protected by the sheet 14. A part of the chemical adheres to the beltlike sheet 14. However, it is squeezed off by a sponge roll 19 and a squeezing roll 18 while moving and reused in a clean state after passing through cleaning, dehydration and drying.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of applying, for example, a chemical solution to one side of a sheet-like material such as a film or a thin plate.

When applying, for example, a chemical solution to one side of a sheet-like material, generally, as shown in FIG. The product 6 is obtained by feeding the sheet material between the sheet material 3 and coating one side of the sheet material with a chemical solution. However, if there is no sheet-like material to be coated between the presser roll 2 and the coating 4/I/S, how much chemical solution t will be deposited on the presser roll 2, and therefore will it remain in that state until the next one? Both sheets of material p-A/2
And when you feed it between 3 and 3, it becomes a coating roll! The chemical solution is also applied to the side opposite to the side to which it is applied, so
When coating only one side of a sheet-like material, there is a problem in that workability is poor because it is necessary to mask the side that does not require coating.

Therefore, the present invention interposes an auxiliary sheet between the presser roll and the coating roll, and feeds the sheet material between the auxiliary sheet and the coating rule.
To provide a method for applying a chemical liquid to a sheet-like material, which efficiently performs coating on only one side of the sheet-like material.

An embodiment of the present invention will be described below with reference to FIGS. That is, as shown in the figure, a belt-like sheet l as an auxiliary sheet is placed between the presser foot 4 lO and the coating roll /3 to which the chemical solution /2 in the chemical liquid storage tank // is attached.
Sheet-like material to which chemical solution is applied with II interposed /j
was fed between the belt-shaped sheet 1 and coating roll 3 as shown by the arrow in the figure. The belt-like sheet lll is set to have a width larger than the width of the sheet-like material /4, so that it can reliably mask the sheet-like material lll, and in particular, the surface in contact with the sheet-like material /4,
That is, a support roll whose outer surface is treated with water repellent treatment with silicone or Teflon, etc., and which is appropriately arranged. / 7 , / 7
, , , along the direction of movement, it is sequentially brought into contact with the sponge roll 1 which is a combination of the squeezing roll/1r, immersed in the cleaning liquid in the cleaning tank 〇, and further passed through the squeezing roll 22. After that, it is made to pass through the dryer 23. Note that a chemical liquid recovery tank 2j is provided for the aperture p-R/lr.

When the sheet material/B is fed between the belt-shaped sheet)/II and the coating roll 13, the belt-shaped material/B is fed between the coating roll/IK clamp according to the rotation of the presser roll lO. In this state, it moves in the direction of the arrow, and the chemical solution /2 adhering to the coating roll 13 is applied to one surface of the sheet-like material 1B, that is, the lower surface in the figure. At this time, the other surface of the sheet-like material 1B, the upper surface in the figure, is protected by the belt-like sheet 7μ, so the chemical solution /J does not adhere to it, and therefore, the sheet-like material 6 coated only on one side. is taken out. On the other hand, in the belt-shaped sheet)/lI[, the chemical solution 1.2 is attached to the part other than the masked part of the sheet-shaped material 16, but the belt-shaped sheet)
The chemical liquid etc. /2 that adheres as the /l moves is absorbed by the sponge roll lde, squeezed out by the squeezing roll /If, collected in the chemical liquid recovery tank 2j, and reused.

Next, the belt-like sheet is immersed in cleaning liquid-1 to be washed, and then further dried by passing through dryer-3. Therefore, the presser roll I is cleaned again.
It is introduced between O and the coating roll 13 to keep the upper surface of the subsequent sheet material /6. In addition, if the feeding of the sheet-like material /J is temporarily interrupted, the chemical solution /2#'i attached to the coating roll /3 will adhere to the belt-like sheet /Hiro. lIl
As described above, the 12 chemical liquids that have moved and adhered are removed, thus eliminating the possibility that the chemical liquid 1 will adhere to the upper surface of the newly fed sheet-like material l.

As is clear from the above description, in the present invention, an auxiliary sheet is interposed between the pressing roll and the coating roll, and the sheet material is fed between the auxiliary sheet and the coating roll. It is possible to apply chemicals, etc. to only one side of the sheet material, and there is no need to apply a special mask to the other side, making it possible to efficiently apply chemicals, etc. to only one side of the sheet material. Can be processed.

[Brief explanation of the drawing]

FIG. 1 is a conceptual diagram of a conventional apparatus for carrying out a method of applying a chemical solution or the like to a sheet-like material, and FIG. 2 is a conceptual diagram showing an example of an apparatus for carrying out a method according to the present invention. 10... Presser roll/L2... Chemical solution, etc. 13... Coating roll/1
1. ,,,, Belt-shaped sheet 16...
... Sheet material applicant: Nippon Meku) On Stock Co., Ltd.

Claims (1)

[Claims] Between the presser roll and the coating roll<In a method in which a sheet-like material is fed and a chemical solution, etc. attached to the coating roll is applied to one side of the sheet-like material, the presser roll and the coating roll are A method for applying a chemical liquid to a sheet-like material, characterized in that an M auxiliary sheet is interposed between the two, and the sheet-like material is fed between the auxiliary sheet and the coating four.