Transfer sheet, transfer method and method for manufacturing membrane electrode assembly
AssigneeRobert Bosch GmbH
InventorsKatsuhiko Oshikawa, Shogo Takamuku
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Abstract
To improve peelability of a base sheet regardless of a type of the base sheet. A transfer sheet (50A, 50B) in which a transfer layer (52) is laminated on a base sheet (51) includes a plurality of gas occlusion bodies (60) in a surface of or inside the transfer layer (52). The gas occlusion bodies (60) store gas therein and release the stored gas when energy is applied.
Claims9
A transfer sheet (50A, 50B) comprising:
- a transfer layer (52) laminated on a base sheet (51), and
- a plurality of gas occlusion bodies (60) provided inside the transfer layer (52), wherein
- the gas occlusion bodies (60) are configured to store gas, and release the stored gas when energy is applied, wherein the gas occlusion bodies (60) are porous glass beads.
A transfer method for transferring, from a transfer sheet (50A, 50B) in which a transfer layer (52) is laminated on a base sheet (51), the transfer layer (52) to an object to be transferred, the transfer method comprising:
- a step of bringing the transfer sheet (50A, 50B) into contact with the object to be transferred to transfer the transfer layer (52);
- and
- a step of peeling the base sheet (51), via the transfer layer (52), from the object to be transferred, wherein
- the transfer sheet (50A, 50B) includes a plurality of gas occlusion bodies (60) that store gas inside the transfer layer (52), and
- the method further comprising:
- a step of applying energy to the gas occlusion bodies (60) before or during the peeling of the base sheet (51), so that the gas is released from the gas occlusion bodies (60), wherein the gas occlusion bodies (60) are porous glass beads.
A method for manufacturing a membrane electrode assembly (3) including electrodes (2) with catalyst layers (21) and an electrolyte membrane (1) with the electrodes (2) being disposed on both sides thereof, the method for manufacturing a membrane electrode assembly comprising:
- a step of bringing a transfer sheet (50A, 50B) in which the catalyst layer (21) is laminated on a base sheet (51) into contact with the electrolyte membrane (1) to transfer the catalyst layer (21);
- and
- a step of peeling off the base sheet (51) from the catalyst layer (21), wherein
- the transfer sheet (50A, 50B) includes a plurality of gas occlusion bodies (60) that store gas inside the catalyst layer (21), and
- the method for manufacturing a membrane electrode assembly further comprising:
- a step of applying energy to the gas occlusion bodies (60) before or during the peeling of the base sheet (51), so that the gas is released from the gas occlusion bodies (60), wherein the gas occlusion bodies (60) are porous glass beads.
Dependencies are inferred from the claim text.