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Nanometer-silver antibacterial coating, its preparation and use

A nano-silver antibacterial and nano-silver technology, applied in botany equipment and methods, applications, biocides, etc., to achieve the effect of killing or inhibiting pathogenic bacteria, accelerating healing, and promoting tissue repair and regeneration

Inactive Publication Date: 2007-01-17
SHENZHEN AGT PHARM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The nanometer silver material described by this patented product helps stop germs from spreading throughout our body quickly without causing any harmful side effects like burning skin cells on sensitive areas such as eyes. This makes treatment more effective than traditional methods involving sutures or adhesive bandages.

Problems solved by technology

The technical problem addressed by this patented method for applying nanosilvers (nano-particles) into medicine dressings without causing harmful side effect(s).

Method used

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  • Nanometer-silver antibacterial coating, its preparation and use
  • Nanometer-silver antibacterial coating, its preparation and use
  • Nanometer-silver antibacterial coating, its preparation and use

Examples

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preparation example Construction

[0037] The preparation method of above-mentioned nano-silver antibacterial dressing, its technological process block diagram is as figure 1 shown, including the following steps:

[0038] a, preparation of coating solution: the nano-silver colloid stock solution can be the product of Korean patent PCT / KR2003 / 002855, the concentration of nano-silver can be 2000ppm or 10000ppm, a certain amount of medical adhesive, such as: polyvinyl alcohol (PVA ), the addition amount is 8-20% by weight, and it can also be methyl cellulose, the addition amount is 3-8%, and water: preferably pure water, and the above ingredients are mixed uniformly to make a coating liquid;

[0039] b. Padding: adding the coating solution into a padding tank, padding the substrate in the padding tank, and evenly coating the coating solution on the surface of the substrate layer;

[0040] c. Pre-baking: the substrate is pre-baked at 100-180 °C;

[0041] d. Stenter drying: The base material is dried at 100-150°C....

preparation example 1

[0049] a. Coating solution: add 1% AgNo 3 Dissolve in water, add 3% ascorbic acid for acidification, then add 20% ammonia water to generate ammonium nitrate, and generate a solution containing nano-silver particles. You can also add 15% polyvinyl alcohol as a binder to make a solution containing nano-silver particles coating solution; above percentages are percentages by weight;

[0050] b. Padding: the gauze is continuously passed through the padding tank filled with the above-mentioned coating solution, and then the gauze passes through a roller with a certain pressure, and the coating solution is evenly coated on the gauze;

[0051] c. Pre-drying: pre-dry the gauze continuously at 100-180°C;

[0052] d. Stenter drying: Continuously dry the gauze at 100-150°C;

[0053] Sample 1 was prepared by the above method, and the nano-silver content of sample 1 was 0.8% by weight.

preparation example 2

[0055] Other conditions are identical with preparation example 1, just a step is:

[0056]a, coating solution: 50kg of nano-silver colloid stock solution, the concentration of nano-silver is 2000ppm, the particle size distribution of nano-silver is 1-20 nanometers; polyvinyl alcohol (PVA), 15kg, and water: 30kg, the above raw materials well mixed;

[0057] Sample 2 was prepared by the above method, and the nano-silver content of sample 2 was 0.15% by weight.

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Abstract

An antibacterial nano-Ag dressing for the operation incision and treating infection of wound is composed of substrate and Ag nanoparticles. Its preparing process includes such steps as preparing coating liquid, immersing, rolling, pre-baking, stretching and baking.

Description

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Claims

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Application Information

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Owner SHENZHEN AGT PHARM
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