Antimicrobial sheet and manufacturing method thereof
AssigneeUacj Corporation
InventorsAtsushi KOISHIKAWA, Kenji NOSE
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Abstract
An antimicrobial sheet (1) includes 100-200 mg/m2 of copper particles (3) adhered to a surface of a resin (polymer) film (2). The antimicrobial sheet has a total light transmittance at wavelengths of 380-780 nm of 20% or more. The copper particles have an average circle-equivalent diameter in the range of 10-30 nm. The antimicrobial sheet can be prepared by performing vacuum deposition to form the copper particles on the resin film under the condition that the pressure is controlled to within the range of 1×10−4-1×10−2 Pa during the vacuum deposition.
Claims20
An antimicrobial sheet comprising:
- a resin film;
- and
- copper particles adhered to at least one surface of the resin film;
- wherein:
- the antimicrobial sheet has a total light transmittance at wavelengths of 380-780 nm of 20% or more;
- an average circle-equivalent diameter of the copper particles is 10-30 nm;
- and
- 100-200 mg/m2 of the copper particles are adhered to the resin film.
An antimicrobial sheet comprising:
- a polymer sheet having a thickness of 5-250 μm;
- and
- 100-200 mg/m2 of copper particles disposed on a surface of polymer sheet such that 1,500-5,000 copper particles/μm2 are exposed on the surface;
- wherein:
- the copper particles have a copper content of at least 60 mass % and an average circle-equivalent diameter in the range of 10-30 nm;
- and
- the antimicrobial sheet has a total light transmittance in a wavelength range of 380-780 nm of 20% or more.
Dependencies are inferred from the claim text.