摘要:
Layered, water vapor permeable composite comprise at least one water vapor permeable film layer and at least one substrate layer, the water vapor permeable film (i) comprising at least one film forming polymer and at least one inert porous filler, (ii) having a water vapor transmission rate of at least 1000 g/m2/day, and (iii) activated. Representative film forming polymers include ethylene interpolymers, and representative fillers include silica glass beads. One exemplary method of activating the film is to subject it to sufficient pressure such that the glass beads are crushed within the film matrix.
摘要:
Controlled permeability films are described that comprise at least on film-forming polymer and an inert, nonporous filler material having an average particle size such that the ratio of the average particle size of the filler to the film thickness is 0.67 to 0.99. Packages comprising such a controlled permeability film, and methods for making the film and using it to improve the storage life of a perishable article are also described.
摘要:
The present invention relates to heat resistance elastic articles comprising a cured, irradiated, or crosslinked or ethylene polymer and a method for making the same. In particular, the invention relates to a shaped article (for example, film or fiber) characterized by improved elasticity at elevated temperatures and comprising a substantially cured, irradiated, or crosslinked homogeneously branched ethylene polymer. The improved elastic article of the present invention is particularly suitable for use in applications where good elasticity must be maintained at elevated temperatures such as, for example, personal hygiene items and disposable infection-control garments at body temperatures of about 100 °F (38 °C).