Breathable protective apparel
View Patent ↗A laminated structure containing a microporous film bonded in a face to face relationship with a plexifilamentary nonwoven web with an adhesive layer situated in contact with a least a portion of both the microporous film and the nonwoven web. The adhesive may contain reactive tracers.
1. A laminated structure consisting of a microporous film bonded in a face to face relationship with a plexifilamentary nonwoven web with an adhesive layer situated in contact with a least a portion of both the microporous film and the nonwoven web, wherein;
the film contains filler consisting of calcium carbonate, clay, titanium dioxide, barium sulfate or any combination thereof in an amount between 30% and 50% by weight of the total film weight, and between 40% and 90% of polyolefin polymer by weight of the total film weight,
the film has a thickness of between 12 and 25 microns,
the film is bonded to the plexifilamentary web by adhesive,
the laminated structure has a water vapor transmission rate (WVTR) as measured by the EN ISO 12572 Climate C method of greater than or equal to 1000 g/m2/day,
the basis weight of the laminated structure is at least 55 g/m2,
the tensile strength of the laminated structure according to EN ISO 13934-1 is at least 35 Newtons in the machine direction,
the tensile elongation of the laminated structure according to EN ISO 13934-1 is at least 8% in the machine direction,
the tensile strength of the laminated structure according to EN ISO 13934-1 is at least 35 Newtons in the cross direction,
the tensile elongation according to EN ISO 13934-1 is at least 15% in the cross direction, and
the laminated structure has a hydrohead according to EN 20811 of at least 200 cm of water.
2. The structure of claim 1 in which the adhesive is located at multiple discrete points on the plexifilamentary web.
3. The structure of claim 2 in which the adhesive comprises carbon based powders, micro-powders, nanotubes and carbon fiber fragment components, or any combination thereof.
4. The structure of claim 2 in which the adhesive comprises reactive tracers.
5. The structure of claim 1 in which the polyolefin polymer is selected from the group consisting of LDPE, LLDPE, HDPE, PP, and any combination thereof.
6. A protective garment comprising the structure of claim 1 .