Anti-bacterial/anti-viral coatings, coating process and parameters thereof
First Claim
1. A method of imparting anti-pathogenic properties to a face mask substrate material comprising:
- (a) preparing a first coating composition containing an anti-pathogenic agent consisting essentially of PVP-I and N-9 in a ratio of from about 100;
0 to about 0;
100 of PVP-I to N-9, and having a percent solids ranging from 10 percent to about 50 percent;
(b) applying said first coating to a surface of a substrate;
(c) preparing a second coating composition containing a premix solution comprising a hydrophilic polymeric binder, a nonionic surfactant, an excipient, and a solvent, and having a percent solids ranging from about 10 percent to about 50 percent;
(d) applying said second coating composition as a top coat over said first coating composition on said substrate; and
(e) drying the coated substrate material.
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Accused Products
Abstract
The invention relates to a method of imparting anti-pathogenic properties to a substrate material comprising: (a) preparing a coating composition containing an anti-pathogenic agent consisting essentially of PVP-I and N-9 in a ratio of from about 100:0 to about 0:100 of PVP-I to N-9, the coating composition further containing a pre-mix solution with which the anti-pathogenic agent is intimately mixed in a ratio of from about 6:4 to about 8:2 of agent to pre-mix on a dry basis, and having a percent solids content of from about 5% to about 35% solids; (b) feeding the anti-pathogenic coating composition into a coating machine; (c) loading substrate onto the coating machine; (d) operating the coating machine such that the coating composition comes into intimate contact with at least one surface of the substrate; and (e) drying the coated substrate material. The invention further relates to the preparation of coating composition, the composition itself and to providing the coating in a dual or multilayered format, wherein a first layer contains the active ingredient and a second layer contains the remaining coating components.
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Citations
24 Claims
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1. A method of imparting anti-pathogenic properties to a face mask substrate material comprising:
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(a) preparing a first coating composition containing an anti-pathogenic agent consisting essentially of PVP-I and N-9 in a ratio of from about 100;
0 to about 0;
100 of PVP-I to N-9, and having a percent solids ranging from 10 percent to about 50 percent;(b) applying said first coating to a surface of a substrate; (c) preparing a second coating composition containing a premix solution comprising a hydrophilic polymeric binder, a nonionic surfactant, an excipient, and a solvent, and having a percent solids ranging from about 10 percent to about 50 percent; (d) applying said second coating composition as a top coat over said first coating composition on said substrate; and (e) drying the coated substrate material. - View Dependent Claims (2, 3, 4)
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5. A process for producing a substrate coated with a formulation containing multiple coating layers and suited for use as a face mask, and wherein at least one coating layer contains an anti-pathogenic component, comprising:
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(a) depositing onto at least one surface of a face mask substrate material a first coating layer formulation in solution; (b) fixing said first layer to said substrate; (c) depositing onto at least one surface of said face mask substrate material a second coating layer formulation in solution; (d) fixing said second layer to said substrate; and (e) drying said substrate such that the coated face mask substrate, when dry, protects a user against air- or solution-borne pathogens and, when wet, releases the anti-pathogenic agent to substantially immediately eliminate the pathogens, the formulation containing the first and second coating layer formulations being characterized by the inclusion in at least one of said coating layers of at least one active ingredient selected from PVP-I and N-9. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12)
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- 13. A coated face mask material comprising a substrate material in intimate contact with at least one layer of a multi-layer coating, said coating containing in at least one layer thereof at least one anti-pathogenic agent, the multi-layer coating being characterized by the ability to release the at least one anti-pathogenic agent immediately upon contact with a solution-borne pathogen to eliminate substantially immediately the pathogenic activity of the pathogen, wherein the multi-layer coating layers each have a percent solids of from about 10 percent to about 50 percent.
- 19. A face mask having anti-bacterial and anti-viral properties comprising a face mask substrate material coated with a coating formulation containing an anti-bacterial and anti-viral agent selected from PVP-I and N-9, and further containing a premix solution comprising at least one of a hydrophilic polymeric binder, a nonionic surfactant, an excipient, an anti-pathogenic agent, a free iodine scavenger and a solvent.
Specification