Processes for producing fiber and fabrics with zinc content

Patent metadata

Field	Value
Publication number	US-2021186025-A1
Application number	US-202017126155-A
Country	US
Kind code	A1
Filing date	Dec 18, 2020
Priority date	Dec 18, 2019
Publication date	Jun 24, 2021
Grant date	—

Abstract

The present disclosure relates to a process for preparing fibers and/or fabrics having antimicrobial properties, the process comprising: determining an operating pressure limit; calculating an amount of zinc based on the operating pressure limit; forming a polyamide composition comprising: polyamide; and the calculated amount of zinc; forming fibers from the polyamide composition, wherein the forming is conducted at an operating pressure below the operating pressure limit.

First claim

We claim:

1 . A process for preparing fibers or fabrics having antimicrobial properties, the process comprising:
determining an operating pressure limit; calculating an amount of zinc based on the operating pressure limit; forming a polyamide composition comprising:
polyamide; and
the calculated amount of zinc;
forming fibers from the polyamide composition, wherein the forming is conducted at an operating pressure below the operating pressure limit.

2 . The process of claim 1 , wherein the calculated amount of zinc ranges from 100 ppm to 4000 ppm.

3 . The process of claim 1 , further comprising calculating a polyamide RV range based on the operating pressure limit; and wherein the polyamide composition has an RV within the polyamide RV range.

4 . The process of claim 1 , wherein the RV of the polyamide composition ranges from 2 to 60.

5 . The process of claim 1 , wherein the operating pressure is the pressure at which the die is operated.

6 . The process of claim 1 , wherein the operating pressure limit is below 800 psi.

7 . A process for preparing fibers or fabrics having antimicrobial properties, the process comprising:
determining a polyamide RV range;
calculating an amount of zinc based on the polyamide RV range;
forming a polyamide composition comprising:
polyamide; and
the calculated amount of zinc; and
having an RV within the polyamide RV range forming fibers from the polyamide composition.

8 . The process of claim 7 , wherein the calculated amount of zinc ranges from 100 ppm to 4000 ppm.

9 . The process of claim 7 , wherein the forming is conducted at an operating pressure below 800 psi.

10 . The process of claim 7 , wherein the RV of the polyamide composition ranges from 2 to 60.

11 . A process for preparing fibers or fabrics having antimicrobial properties, the process comprising:
determining an operating pressure limit; calculating a polyamide RV range based on the operating pressure limit; forming a polyamide composition comprising polyamide and having an RV within the polyamide RV range; forming fibers from the polyamide composition, wherein the forming is conducted at an operating pressure below the operating pressure limit.

12 . The process of claim 11 , wherein, during the forming, the RV of the polyamide composition is maintained within the polyamide RV range.

13 . The process of claim 11 , further comprising calculating an amount of zinc based on the operating pressure limit; and wherein the polyamide composition comprises polyamide and the calculated amount of zinc.

14 . A process for preparing fibers or fabrics having antimicrobial properties, the process comprising:
determining an operating pressure limit; forming a polyamide composition comprising:
polyamide; and
from 100 ppm to 4000 ppm zinc; and
having an RV ranging from 2 to 60; and forming fibers from the polyamide composition, wherein the forming is conducted at an operating pressure below the operating pressure limit.

15 . The process of claim 14 , further comprising calculating an amount of zinc based on the operating pressure limit, and wherein the polyamide composition comprises the calculated amount of zinc.

16 . The process of claim 14 , further comprising calculating a polyamide RV range based on the operating pressure limit, and wherein the polyamide composition has an RV within the polyamide RV range.

17 . The process of claim 14 , wherein the polyamide composition comprises less than 1000 ppm water.

18 . The process of claim 14 , wherein the fibers have an average fiber diameter of less than 1 micron.

Assignees

• Ascend Performace Mat Operations Llc
• Ascend Performance Mat Operations Llc

Inventors

• Ortega Albert
• Yung Wai-Shing
• Osborn Scott E

Classifications

• A01N59/16 Primary

  Heavy metals; Compounds thereof · CPC title

• D01F1/103

  Agents inhibiting growth of microorganisms · CPC title

• A01N25/34

  Shaped forms, e.g. sheets, not provided for in any other sub-group of this main group · CPC title

• C08K2003/2296

  of zinc · CPC title

• C08K5/098

  Metal salts of carboxylic acids · CPC title