Method of forming a membrane, especially a latex membrane, having a biocide barrier
First Claim
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1. A method of making a latex material having a biocide barrier comprising the steps of:
- applying a first coating of liquid latex onto a former;
applying a coating of biocide effective as a coagulant for liquid latex over the first latex coating already on the former; and
applying a second coating of liquid latex over the biocide and the first latex coating.
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Abstract
Methods of forming a chemical barrier against the transmission of disease-causing microbes and other harmful agents through a membrane such as latex. In the principal method, a mold or former is coded with a coagulant, which is dried, and then the former is dipped into liquid latex, which is allowed to gel, and then the former is dipped into a solution containing the biocide, and then the former is dipped again into the liquid latex, after which the entire coating on the former is cured. Alternatively, the biocide may be sprayed otherwise applied onto the gelled latex.
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Citations
25 Claims
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1. A method of making a latex material having a biocide barrier comprising the steps of:
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applying a first coating of liquid latex onto a former; applying a coating of biocide effective as a coagulant for liquid latex over the first latex coating already on the former; and applying a second coating of liquid latex over the biocide and the first latex coating. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 12)
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11. A method of making a latex material having a biocide barrier comprising the steps of:
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applying a coating of biocide effective as a coagulant for liquid latex onto a former; and applying a coating of liquid latex over the biocide coating already on the former. - View Dependent Claims (13, 14, 15)
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16. A method of making a latex material having a biocide barrier comprising the steps of:
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applying a first coating of liquid latex onto a former; applying a coating of biocide effective as a coagulant for liquid latex selected from the group consisting of dextran sulphate, benzalkonium, betadyne, gentian violet, acriflavine and acridine dyes, mercurochrome, silver salts, and an extract of blue-green algae, said biocide in solution in a concentration substantially in the range of 0.10 percent to five percent by weight, over the first latex coating already on the former such that the ratio of the mass of the biocide solution coating to the mass of the first latex coating is substantially in the range of 0.05 to 0.3; and applying a second coating of liquid latex over the biocide and the first latex coating. - View Dependent Claims (17, 18, 19, 20, 21)
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22. A method of making a latex material having a biocide barrier comprising the steps of:
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applying a coating of biocide effective as a coagulant for liquid latex selected from the group consisting of dextran sulphate, benzalkonium, betadyne, gentian violet, acriflavine and acridine dyes, mercurochrome, silver salts, and an extract of blue-green algae, said biocide in solution in a concentration substantially in the range of 0.10 percent to five percent by weight, onto a former; and applying a coating of liquid latex over the biocide coating already on the former such that the ratio of mass of the biocide solution coating to the mass of the latex coating is substantially in the range of 0.05 to 0.3. - View Dependent Claims (23, 24, 25)
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Specification