Method for producing heat transfer suppression sheet, heat transfer suppression sheet, and battery pack
AssigneeIbiden Co., Ltd.
InventorsKeiji KUMANO, Takahiko IDO
Life of this patent
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Abstract
A method for producing a heat transfer suppression sheet contains processing a mixture containing an inorganic particle, a binder fiber having a core-sheath structure, and a hot melt powder into a sheet. The binder fiber having a core-sheath structure includes a core portion extending in its longitudinal direction, and a sheath portion formed to cover an outer peripheral surface of the core portion, and a melting point of a first organic material constituting the core portion is higher than a melting point of a second organic material constituting the sheath portion and a melting point of a third organic material constituting the hot melt powder.
Claims20
A method for producing a heat transfer suppression sheet comprising:
- processing a mixture containing an inorganic particle, a binder fiber having a core-sheath structure, and a hot melt powder into a sheet, wherein
- the binder fiber having a core-sheath structure includes a core portion extending in a longitudinal direction of the binder fiber, and a sheath portion formed to cover an outer peripheral surface of the core portion, and
- a melting point of a first organic material constituting the core portion is higher than a melting point of a second organic material constituting the sheath portion and a melting point of a third organic material constituting the hot melt powder.
A heat transfer suppression sheet comprising:
- an inorganic particle;
- an organic fiber constituted of a first organic material;
- a fusion portion covering an outer peripheral surface of the organic fiber;
- and
- a hardened portion formed in a region different from the fusion portion, wherein
- the fusion portion contains a second organic material having a melting point lower than a melting point of the first organic material, and the inorganic particle, and
- the hardened portion contains a third organic material having a melting point lower than the melting point of the first organic material, and the inorganic particle.
Dependencies are inferred from the claim text.