US 2022/0054667 A1 · INVISIBLE SINGLET FILM

Abstract

Antimicrobial films for generating singlet oxygen and their use is described. The antimicrobial films are generally thin films having two surfaces or faces. The first surface of the film is adhesive. Various adhesives, including, electrostatic charges, are possible. The second surface faces in a direction opposite from the first surface. The second surface of the film emits singlet oxygen when activated by light or ultrasound. Various photosensitizers can be incorporated onto the second surface of the films for generating the singlet oxygen. The singlet oxygen and other radical species generated from the antimicrobial films diffuses out from and in proximity to the films to form a layer or cloud of singlet oxygen at a concentration sufficient to inactivate microbial particles, e.g., viruses and other pathogens, that come within the singlet oxygen layer to provide a protective zone against microbial particles.

Claims23

Dependent claims

An antimicrobial film, comprising:

a first surface facing in a first direction;
a second surface facing in a second direction opposite from the first surface, wherein the first surface and the second surface extend along a width and a length of the film, and wherein a distance separating the first surface and the second surface corresponds to a thickness of the film;
one or more material layers are included between the first and the second surfaces of the film;
wherein the first surface of the film is adhesive;
and
wherein the second surface of the film emits singlet oxygen that is toxic to microbial particles incident on the second surface when activated by light or ultrasound.

3 more elements

Dependencies are inferred from the claim text.

Invisible singlet film

Life of this patent

Invisible singlet film

Life of this patent

Abstract

Claims23