Cut sheet and method for reducing cuts
AssigneeTbm Co., Ltd.
InventorYuichiro Sumi
Life of this patent
Estimating the term…
Abstract
Provided is a cut sheet having sufficient water resistance and having fewer sharp protrusions in the end face despite including a large amount of inorganic particles and a method of reducing cuts. The cut sheet is formed of a resin composition including inorganic particles of 50% by mass or larger relative to the total mass of the composition and a thermoplastic resin. The cut sheet has a water absorption rate of 10% or lower measured in accordance with JIS K-7209. The actual occupancy rate of the exposed area of the inorganic particles is lower by at least 2% than the theoretical occupancy rate of the area of the inorganic particles in at least one end face.
Claims6
A cut sheet that is formed of a resin composition including inorganic particles of 50% by mass or larger relative to a total mass of the composition and a thermoplastic resin, wherein
- the cut sheet has a water absorption rate of 10% or lower measured in accordance with JIS K-7209, and
- an actual occupancy rate of an exposed area of inorganic particles is lower by at least 2% than a theoretical occupancy rate of an area of inorganic particles in at least one end face.
A method for reducing cuts generated by a cut sheet, the method comprising:
- setting an actual occupancy rate of an exposed area of inorganic particles lower than a theoretical occupancy rate of an area of inorganic particles in at least one end face in the cut sheet formed of a resin composition including the inorganic particles of 50% by mass or larger relative to a total mass of the composition and a thermoplastic resin,
- wherein the inorganic particles are calcium carbonate and have an average particle diameter of 0.1 μm to 50 μm, and
- the thermoplastic resin comprises at least one selected from the group consisting of polypropylene and polyethylene.
A method for reducing cuts generated by a cut sheet, the method comprising:
- covering at least a part of surfaces of inorganic particles with a thermoplastic resin in at least one end face in the cut sheet formed of a resin composition including the inorganic particles of 50% by mass or larger relative to a total mass of the composition and the thermoplastic resin,
- wherein the inorganic particles are calcium carbonate and have an average particle diameter of 0.1 μm to 50 μm, and
- the thermoplastic resin comprises at least one selected from the group consisting of polypropylene and polyethylene.
Dependencies are inferred from the claim text.