Microporous membrane coating machine

Abstract

This invention provides a microporous membrane coating machine, comprising: a conveying unit, including a coating section and a drying and setting section according to the processing flow, for moving the substrate forward; a coating mechanism, located at the coating section corresponding to the conveying unit, for coating the substrate; and an oven unit, located at the drying and setting section corresponding to the conveying unit; wherein the drying and setting section defines a drying start point and a drying end point corresponding to the oven unit; the main feature is that there is a height difference between the drying start point and the drying end point of the conveying unit, and the height of the drying end point is lower than the height of the drying start point, thereby forming a gently sloping section, the ratio of the length of the gently sloping section to the height difference must be between 9:1 and 22:1.

Claims

1. A microporous membrane coating machine for manufacturing a microporous membrane, the microporous membrane comprising a substrate and a coating layer; the microporous membrane coating machine comprising: a conveying unit, including a coating section and a drying and setting section in a processing flow sequence, for moving the substrate forward; a coating mechanism disposed at the position corresponding to the coating section of the conveying unit, for coating the coating layer onto the substrate; and an oven unit disposed at the position corresponding to the drying and setting section of the conveying unit; wherein the drying and setting section defines a drying start point and a drying end point corresponding to the oven unit; and wherein, The drying start point and the drying end point of the conveying unit have a height difference, and the height of the drying end point is lower than the height of the drying start point, thereby forming a gentle slope section. The gentle slope section defines a length and a height difference, and the ratio of the length to the height difference must be between 9:1 and 22:

1.

2. The microporous membrane coating machine as described in claim 1, wherein the conveying unit is of the roller conveying type.

3. The microporous membrane coating machine as claimed in claim 1, wherein the conveying unit further includes an advection section before the coating section.

4. The microporous membrane coating machine as described in claim 1, wherein the descent section is a straight, descent-shaped section.

5. The microporous membrane coating machine as described in claim 2, wherein the descent section is in the form of a parabolic descent.

6. The microporous membrane coating machine as described in claim 1, wherein the preferred ratio of the length and drop height defined by the descent section is 14:1 to 16:

1.

7. The microporous membrane coating machine as described in claim 1, wherein the microporous membrane is a proton exchange membrane; and wherein the conveying speed of the conveying unit is between 1 m / min and 2 m / min.

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