Method and device for intermittent coating

Patent metadata

Field	Value
Publication number	US-10399112-B2
Application number	US-201515509510-A
Country	US
Kind code	B2
Filing date	Aug 7, 2015
Priority date	Sep 9, 2014
Publication date	Sep 3, 2019
Grant date	Sep 3, 2019

Abstract

A device for intermittent coating of a substrate moving in a transport direction relative to the device includes a nozzle body comprising two nozzle jaws; an insertion film having a cut-out provided between the two nozzle jaws, wherein the cut-out in the insertion film forms a nozzle slot within the nozzle body, wherein the nozzle slot extends transversely to the transport direction of the substrate and in parallel with the substrate, and wherein the nozzle slot ends in an outlet gap; and a supply channel, wherein the outlet gap is in flow connection with the supply channel via the nozzle slot. A first of the two nozzle jaws is provided with at least two openings which lead into the nozzle slot in series between the supply channel and the outlet gap and which are closed in a fluid-tight manner toward the nozzle slot by at least two elastically deformable elements.

First claim

The invention claimed is:

1. A device for intermittent coating of a substrate, the substrate moving in a transport direction relative to the device, the device comprising:
a nozzle body comprising at least two nozzle jaws,
an insertion film having a cut-out being provided between the nozzle jaws, wherein
the cut-out in the insertion film forms a nozzle slot within the nozzle body, wherein the nozzle slot extends transversely to the transport direction of the substrate and in parallel with the substrate, and wherein the nozzle slot ends in an outlet gap, and
a supply channel, wherein the outlet gap is in flow connection with the supply channel via the nozzle slot,
wherein a first of the nozzle jaws is provided with at least two openings which lead into the nozzle slot in series between the supply channel and the outlet gap and which are closed in a fluid-tight manner toward the nozzle slot by at least two elastically deformable elements,
wherein each of the elastically deformable elements is operatively connected to the coating substance in the nozzle slot on a side and to an actuator in the direction of the nozzle slot on an other side, and
wherein the openings of the first nozzle jaw are arranged successively in a flow direction of the coating substance proceeding from the supply channel to the outlet gap.

2. The device according to claim 1 , wherein a partition plate is arranged between the nozzle jaws, wherein the insertion film having the cut-out is provided between the first of the nozzle jaws and the partition plate, wherein an additional insertion film having a cut-out is provided between a second of the nozzle jaws and the partition plate, and wherein the cut-out in the additional insertion film forms an additional nozzle slot within the nozzle body between each of the nozzle jaws and the partition plate.

3. A method for intermittent coating of a substrate that is in motion using the device according to claim 2 , wherein a first and a second displaced volume flow remains constant, the method comprising:
a) continuously supplying a coating substance, proceeding from the supply channel and an additional supply channel to the outlet gap and an additional outlet gap via the nozzle slot and the additional nozzle slot,
b) unloading a first of the elastically deformable elements and a first of at least two additional elastically deformable elements in a first of the openings and a first of additional openings by deactivating the actuator to which the first elastically deformable element is operatively connected and an actuator to which the first additional elastically deformable element is operatively connected,
c) loading a second of the elastically deformable elements and a second of the additional elastically deformable elements in a second of the openings and a second of the additional openings by activating the actuator to which the second elastically deformable element is operatively connected and an actuator to which the second additional elastically deformable element is operatively connected,
d) loading the first elastically deformable element and the first additional elastically deformable element in the first opening and the first additional opening by activating the actuator to which the first elastically deformable element is operatively connected and an actuator to which the first additional elastically deformable element is operatively connected, and
e) unloading the second elastically deformable element and the second additional elastically deformable element in the second opening and the second additional opening by deactivating the actuator to which the second elastically deformable element is operatively connected and an actuator to which the second additional elastically deformable element is operatively connected.

4. A method for intermittent coating of a substrate that is in motion using a device according to claim 2 , wherein a first and a second displaced volume flow remain constant, the method comprising:
a) continuously supplying a coating substance, proceeding from the supply channel and an additional supply channel to the outlet gap and an additional outlet gap via the nozzle slot and the additional nozzle slot,
b) unloading a first of the elastically deformable elements in a first of the openings by deactivating the actuator to which the first elastically deformable element is operatively connected,
c) loading a second of the elastically deformable elements in a second of the openings by activating the actuator to which the second elastically deformable element is operatively connected,
d) loading a first of additional elastically deformable elements in a first of additional openings by activating an actuator to which the first additional elastically deformable element is operatively connected,
e) unloading a second of the additional elastically deformable elements in a second of the additional openings by deactivating an actuator to which the second additional elastically deformable element is operatively connected,
f) unloading the first additional elastically deformable element in the first additional opening by deactivating the actuator to which the first additional elastically deformable element is operatively connected,
g) loading the second additional elastically deformable element in the second additional opening by activating the actuator to which the second additional elastically deformable element is operatively connected,
h) loading the first elastically deformable element in the first opening by activating the actuator to which the first elastically deformable element is operatively connected, and
i) unloading the second elastically deformable element in the second opening by deactivating the actuator to which the second elastically deformable element is operatively connected.

5. A method for intermittent coating of a substrate that is in motion using the device according to claim 1 , wherein a displaced volume flow remains constant, the method comprising:
a) continuously supplying a coating substance, proceeding from the supply channel to the outlet gap via the nozzle slot,
b) unloading a first of the elastically deformable elements in a first of the openings by deactivating the actuator to which the first elastically deformable element is operatively connected,
c) loading a second of the elastically deformable elements in a second of the openings by activating the actuator to which the second elastically deformable element is operatively connected,
d) loading the first elastically deformable element in the first of the openings by activating the actuator to which the first elastically deformable element is operatively connected, and
e) unloading the second elastically deformable element in the second opening by deactivating the actuator.

6. The device according to claim 1 , wherein a thickness of the insertion film is between 0.01 mm and 3.00 mm.

7. The device according to claim 1 , wherein the openings are only arranged in the first nozzle jaw, and a second of the nozzle jaws does not have any openings.

Assignees

• Karlsruher Inst Technologie

Inventors

• Scharfer Philip
• Schmitt Marcel
• Schabel Wilhelm
• Diehm Ralf

Classifications

• H01M10/052

  Li-accumulators · CPC title

• H01M6/40

  Printed batteries {, e.g. thin film batteries} · CPC title

• H01M4/622

  being polymers · CPC title

• H01M4/139

  Processes of manufacture · CPC title

• H01M4/0419

  involving spraying · CPC title