초록 ▼

A multilayer chemical barrier fabric is made up of a base sheet of nonwoven polypropylene laminated on one side to a multilayer film sheet having a film of ethylene vinyl alcohol sandwiched between films of nylon with a surface film if linear low-density polyethylene bonded to the outer film of nylo

A multilayer chemical barrier fabric is made up of a base sheet of nonwoven polypropylene laminated on one side to a multilayer film sheet having a film of ethylene vinyl alcohol sandwiched between films of nylon with a surface film if linear low-density polyethylene bonded to the outer film of nylon and laminated on the other side to a multilayer film sheet having a central film of polyvinylidine chloride, an inner film of ethylene vinyl acetate, and an outer film of low-density polyethylene. Fabrics having this structure show resistance to breakthrough within eight hours for all fifteen chemicals listed on the ASTM F1001 chemical test battery. A composite fabric having the above structure, but omitting the multilayer film that contains polyvinylidine chloride, is also disclosed.

대표청구항 ▼

A composite multilayer fabric comprising: a base sheet of fabric having internal open spaces, a first multilayer film sheet laminated to one face thereof and a second multilayer film sheet laminated to its opposite face; said first multilayer film sheet comprising a film of ethylene vinyl alcohol, a

A composite multilayer fabric comprising: a base sheet of fabric having internal open spaces, a first multilayer film sheet laminated to one face thereof and a second multilayer film sheet laminated to its opposite face; said first multilayer film sheet comprising a film of ethylene vinyl alcohol, a film layer of nylon laminated to each face thereof, and an outer film of heat-sealable polyethylene; and said second multilayer film sheet comprising a film of polyvinylidine chloride having a film of ethylene vinyl acetate laminated to the inner face thereof and a film of heat-sealable polyethylene laminated to its outer face.