Stretchable chemical protective material
AssigneeGore Enterprise Holdings, Inc.
InventorMukesh K. Jain
Life of this patent
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Abstract
A stretchable chemical protective material is described comprising a selectively permeable chemical protective film and an elastic textile. Further described are methods for making a stretchable chemical protective material and methods of using the same. Materials made from these methods may have improved flex durability. Garments made from these materials may have improved heat loss.
Claims33
A method of reducing the chemical permeation after 10,000 Gelbo flex cycles in a chemical protective laminate by at least 25 percent comprising:
- forming a chemical protective laminate having a HD permeation of less than 20 μg/cm2 comprising
- providing a selectively permeable chemical protective film having a stiffness greater than about 20 g and an elastic textile;
- applying an adhesive with a dot spacing greater than 400 μm to the selectively permeable chemical protective film;
- pre-stretching the elastic textile;
- and
- laminating the selectively permeable chemical protective film and the elastic textile to form a chemical protective laminate having an elongation greater than about 50% at 4 lbf,
- wherein the chemical protective laminate has an HD permeation that is at least 25 percent less than the same laminate made without the step of pre-stretching the elastic textile.
A durable chemical protective material comprising
- a stretchable chemical protective laminate having a permeation to mustard gas (HD) of less than 20 μg/cm2 after about 10 thousand Gelbo flex cycles at 40° C. and 10% RH, comprising
- a selectively permeable chemical protective film and
- an elastic textile joined to the selectively permeable film by an adhesive,
- wherein the stretchable chemical protective laminate has an elongation of greater than 50% at 4 lbf, a recovery of greater than 80%, and an MVTR of greater than 1000 g/m2/day.
A low heat-stress chemical protective suit comprising
- a form-fitting bodysuit comprising
- a stretchable chemical protective laminate having a permeation to HD of less than 20 μg/cm2 comprising
- a selectively permeable chemical protective film and
- a elastic textile, joined by an adhesive,
- the low heat-stress chemical protective suit having a heat loss of greater than 100 W/m2 at 35° C. and 60% RH.
A stretchable laminate comprising
- a chemical protective film having a stiffness greater than 20 g,
- an elastic textile, and
- a discontinuous adhesive having a dot spacing greater than about 400 μm joining the chemical protective film and the elastic textile, the stretchable laminate having an elongation greater than 50% at 4 lbf and a permeation to HD less than 20μg/cm2.
A durable chemical protective stretch laminate comprising
- a breathable chemical protective film having a stiffness greater than 20 g,
- an elastic textile, and
- and an adhesive applied in a discontinuous pattern having a dot spacing on the breathable chemical protective film of greater than 400 μm joining the chemical protective film and the elastic textile, the durable stretchable laminate having a permeation to HD of less than about 20 μg/cm2 after 10,000 Gelbo cycles.
A method for making a stretchable chemical protective material having a selectively permeable film with a stiffness greater than about 20 g comprising
- providing a selectively permeable film having a stiffness greater than about 20 g;
- providing an elastic textile;
- stretching the elastic textile;
- printing adhesive onto the selectively permeable film;
- adhering the selectively permeable film to the stretched elastic textile to form a stretchable chemical protective material having a permeation to HD less than 20μg/cm2 and having an average elongation of greater than 50% at 4 lbf.
A method of reducing the noise of a chemical protective laminate by at least 25 percent comprising:
- forming a chemical protective laminate having a HD permeation of less than 20 μg/cm2 comprising
- providing a selectively permeable chemical protective film having a stiffness greater than about 20 g and an elastic textile;
- applying an adhesive with a dot spacing greater than 400 μm to the selectively permeable chemical protective film;
- pre-stretching the elastic textile;
- and
- laminating the selectively permeable chemical protective film and the elastic textile to form a chemical protective laminate having an elongation greater than about 50% at 4 lbf,
- wherein the chemical protective laminate has a noise measurement that is at least about 25 percent less than the same laminate made without the step of pre-stretching the elastic textile.
Dependencies are inferred from the claim text.