Ventilation insert

Patent metadata

Field	Value
Publication number	US-2016010274-A1
Application number	US-201414772435-A
Country	US
Kind code	A1
Filing date	Mar 4, 2014
Priority date	Mar 6, 2013
Publication date	Jan 14, 2016
Grant date	—

Abstract

A ventilation insert for textiles, with at least one layer, covered at least partially by an absorption material and having ventilation openings, the openings being at least partially closeable via a liquid by swelling of the absorption material, obtainable by: a) treating a layer having ventilation openings with a mixture, containing a wetting agent, initiator, polymerizable monomer or oligomers, and a cross-linking agent, as a preliminary stage for the absorption material; and b) polymerizing the monomer or oligomer to form the absorption material while forming a bonded connection between the absorption material and the layer. The ventilation insert has a relatively low thickness, a low weight per unit area, and high flexibility permanently and independently of moisture after economical production, via one layer, self-sealingly closing ventilation openings, and containing the absorption material. The absorption material is connected to the layer by bonding, at least in some regions.

First claim

1 . A ventilation insert for disposition in or on a textile, the ventilation insert comprising:
a ply, which is at least partly covered by an absorbent material and comprises ventilation apertures, wherein exposure of the ply to a liquid can cause at least some of the ventilation apertures to become closed by swelling of the absorbent material, and wherein the ply is obtained a method comprising a) treating the ply including the ventilation apertures with a mixture comprising (i) an absorbent material precursor comprising a polymerizable monomer or oligomer and a crosslinker, (ii) a wetting agent, and (iii) an initiator, and b) polymerizing the monomer or oligomer to form the absorbent material and to form a fusional bond between the absorbent material and the ply, wherein the fusional bond comprises at least regional attachment of the absorbent material to the ply.

2 . The insert of claim 1 , wherein the ply comprises fibers comprising polyolefin, polyester, polyamide, polyvinyl chloride, polyacrylonitrile, polyimide, polytetrafluoroethylene, aramid, wool, cotton, silk, hemp, bamboo, kenaf, sisal, cellulose, soy, flax, glass, basalt, carbon fibers, viscose fibers, or two or more of any of these.

3 . The insert of claim 1 , having a DIN EN 9073-2 thickness of 20 to 10 000 μm.

4 . The insert of claim 1 , having a DIN EN 29073-1 basis weight of 5 to 600 g/m 2 .

5 . The insert of claim 1 , having a DIN EN ISO 9237 dry state air transmission rate of 100 to 5000 dm 3 /(m 2 s).

6 . The insert of claim 1 , configured such that evaporation of the liquid causes the partly closed ventilation apertures to reopen.

7 . A method of forming the ventilation insert of claim 1 , the method comprising:
a) treating a ply comprising ventilation apertures with a mixture comprising (i) an absorbent material precursor comprising a polymerizable monomer or oligomer and a crosslinker, (ii) a wetting agent, and (iii) an initiator; and b) polymerizing the monomer or oligomer to form the absorbent material and form a fusional bond between the absorbent material and the ply.

8 . The method of claim 7 , wherein the wetting agent is a compound of formula:
RO(CH 2 CH 2 O) x H, wherein R is linear or branched alkyl, and x is 4, 5, 6.3, 6.5, 7, 8, 9, 10 or 11.

9 . The method of claim 7 , comprising the wetting agent is in a range of from 0.1 to 5 wt %, based on the total mixture.

10 . The method of claim 7 , comprising:
admixing the wetting agent to thereby adjust a DIN 55660 surface tension of the mixture to a range of from 10 to 72 dyn.

11 . The method of claim 7 , further comprising:
crosslinking to a degree in a range of from 4.7*10 −5 to 1.9*10 −1 .

12 . The method of claim 7 , wherein the polymerizable monomer or oligomer comprises a monoethylenically unsaturated monocarboxylic acid, monoethylenically unsaturated polycarboxylic anhydride, carboxylic acid salt, monoethylenically unsaturated mono-carboxylic acid, monoethylenically unsaturated polycarboxylic acid, sulfonic acid, sulfonic acid salt, hydroxyl compound, monoethylenically unsaturated ether of polyol, monoethylenically unsaturated ester of polyol, amide, vinyllactams, amino compound, heterocyclic vinyl compound, or a mixture of two or more of any of these.

13 . The method of claim 7 , wherein the polymerizing comprises forming a superabsorbent.

14 . The method of claim 7 , further comprising:
corona, plasma, or corona and plasma treating the ventilation insert to thereby increase a surface energy of the ventilation insert.

15 . A moisture and/or microclimate regulator, comprising the insert of claim 1 .

16 . The insert of claim 1 , wherein the ply comprises fibers comprising polyphenylene sulfide, polyethylene terephthalate, polybutylene terephthalate, nylon-6,6, nylon-6,0, or two or more of any of these.

17 . The insert of claim 1 , having a DIN EN 9073-2 thickness of 100 to 7000 μm.

18 . The insert of claim 1 , having a DIN EN 9073-2 thickness of 300 to 4000 μm.

19 . The insert of claim 1 , having a DIN EN 29073-1 basis weight of 30 to 400 g/m 2 .

20 . The insert of claim 1 , having a DIN EN 29073-1 basis weight of 50 to 200 g/m 2 .

Assignees

• Freudenberg Carl Kg

Inventors

• Jarre Gerald
• Lange Birger
• Braeunling Volker
• Arnold Thomas
• Smith Ian
• Zaplatilek Nermina
• Lambertz Stephanie
• Schneider Ulrich
• Kramer Dominic

Classifications

• D06M10/025

  Corona discharge or low temperature plasma · CPC title

• D06M2200/00

  Functionality of the treatment composition and/or properties imparted to the textile material · CPC title

• D06M15/263 Primary

  of unsaturated carboxylic acids; Salts or esters thereof · CPC title

• A41D31/102

  Waterproof and breathable · CPC title

• D06M23/10

  Processes in which the treating agent is dissolved or dispersed in organic solvents; Processes for the recovery of organic solvents thereof · CPC title