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US 2025/0360697 A1Published application
Porous resin sheet and carrier tape
AssigneeYupo Corporation
InventorYosuke HIROI
Life of this patent
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Abstract
A porous resin sheet includes a porous resin layer containing a thermoplastic resin. The porous resin layer has a thickness of 40 to 350 μm. The porous resin layer has a porosity of 35 to 80%. The porous resin layer includes a substrate layer and a first surface layer, and each of the substrate layer and the first surface layer contains a thermoplastic resin and particles. A content of the particles in the substrate layer is 20 to 45 mass %, and a content of the particles in the first surface layer is 45 to 80 mass %
Claims16
A porous resin sheet comprising a porous resin layer containing a thermoplastic resin, wherein
- the porous resin layer has a thickness of 40 to 350 μm,
- the porous resin layer has a porosity of 35 to 80%,
- the porous resin layer includes a substrate layer and a first surface layer, and wherein
- each of the substrate layer and the first surface layer contains a thermoplastic resin and particles,
- a content of the particles in the substrate layer is 20 to 45 mass %, and
- a content of the particles in the first surface layer is 45 to 80 mass %.
3 more elements
Dependencies are inferred from the claim text.