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Die coater and method for manufacturing coated film

A technology of coating film and die coating, which is applied in the direction of devices and coatings for coating liquid on the surface, which can solve the problems of large film thickness deviation, changing structure, and variation of coating liquid pressure deviation.

Active Publication Date: 2017-04-12
NITTO DENKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] In addition, in the die coater as in Patent Document 1 above, even when the coating width is changed, immediately after changing the coating width, a large pressure deviation of the coating liquid in the cavity occurs. Large film thickness deviation due to changes
Therefore, in this die coater, it is impossible to adopt a structure that changes the coating width.

Method used

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  • Die coater and method for manufacturing coated film
  • Die coater and method for manufacturing coated film
  • Die coater and method for manufacturing coated film

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Embodiment

[0120] Hereinafter, examples are given and the present invention will be described in more detail, but the present invention is not limited to the following examples.

[0121] use with figure 1 The die coater shown is the same die coater as the Figure 6The manner shown also coats a substrate moving relative to the die coater. Moreover, the conveyance speed of a base material was set to 30 m / min, the temperature at the time of coating was set to 23 degreeC, and coating was performed so that the average film thickness of a coating film might become 23 micrometers.

[0122] A coating solution obtained by dissolving an acrylic adhesive in a mixed solution of toluene and ethyl acetate was used. The properties of this acrylic adhesive are as follows: using a rheometer (manufactured by HAAKE, レオストレス (Rheo Stress) RS1), under the condition of a temperature of 23° C. during coating, a shear rate of 20 (1 / s ) to 2000 (1 / s) to measure the viscosity of the acrylic adhesive, and the ob...

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Abstract

The present invention provides a die coater and a method for manufacturing a coated film. The die coater includes: a detection unit for detecting the thickness of the coating film formed on the substrate; and a control unit for changing the coating width in the longitudinal direction of the slit. The unit can control the supply flow rate of the coating liquid supplied from the supply unit to the cavity and the discharge flow rate of the coating liquid discharged from the cavity by the discharge unit based on the detection result of the detection unit.

Description

technical field [0001] The present invention relates to a die coater and a method of manufacturing a coated film. Background technique [0002] Conventionally, as a coating device, a die coater having a slit for spraying a coating liquid and a cavity for supplying the coating liquid into the slit is known. This die coater supplies a coating liquid to a die cavity, squeezes out the coating liquid from the die cavity to a slit, and moves a base material such as a film close to the slit to coat the base material. Apply the coating solution. [0003] In such a die coater, a coating film of uniform thickness may not be obtained due to variations in the thickness (film thickness) of the coating film over the entire longitudinal direction of the slit. [0004] Therefore, a technique has been proposed in which a die coater includes: a die cavity for supplying a coating liquid to a slit having a constant coating width in the longitudinal direction; and a supply unit for supplying t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B05C5/00B05C11/10B05C11/02B05D1/02
CPCB05C5/0254B05C5/0258B05C5/0266B05C11/1005B05C11/1013B05C5/02B05C11/10B05C3/18
Inventor 小松原诚守田佳史铃木治
Owner NITTO DENKO CORP
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