Elastic articles having improved unload power and a process for

Details Elastic articles having improved unload power and a process for Elastic articles having improved unload power and a process for

1992-02-19

1993-08-31

Teskin, Fred

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526280, 526281, 526282, 526283, 526308, 526336, 526339, 5263485, 2642101, 2642102, 264235, 2642356, 264291, 26433113, 26433117, 264346, 528503, C08F21002, C08J 518

Patent

active

052410315

ABSTRACT:
Disclosed is a process for improving the unload power of a precursor elastic film comprising orienting the film to a draw ratio in the range of about 2:1 to about 20:1 followed by annealing. Further disclosed is an elastic film oriented to a draw ratio in the range of about 2:1 to about 20:1 and comprising a copolymer of ethylene polymerized with at least one comonomer selected from the group consisting of C.sub.3 to C.sub.20 alpha-olefins and C.sub.3 to C.sub.20 polyenes, wherein the copolymer has a density in the range of about 0.855 g/cm.sup.3 to about 0.9 g/cm.sup.3, a melt index in the range of about 0.5 to about 50, with a composition distribution index at least about 45 percent.

REFERENCES:
patent: 2261832 (1941-11-01), Greenup
patent: 3660364 (1972-05-01), Longi et al.
patent: 3684782 (1972-08-01), Longi et al.
patent: 5009827 (1991-04-01), Abu-Isa et al.
Schwartz et al, Plastics Materials and Processes, Van Nostrand Reinhold Co., N.Y., 446-8 (1982).

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