Pre-expanded particle of non-crosslinked linear low density poly

Details Pre-expanded particle of non-crosslinked linear low density poly Pre-expanded particle of non-crosslinked linear low density poly

1985-06-26

1986-10-14

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521 56, 521 58, 521144, C08J 918

Patent

active

046173226

ABSTRACT:
A pre-expanded particle suitable for foaming in a mold comprising non-crosslinked linear low density polyethylene which has a characteristic property that an inclination of slope line obtained on a graph when logarithmic values of melt tension of the polyolefin are plotted as ordinate and reciprocals of absolute temperature at which the melt tension is measured are plotted as abscissa is not more than 1,500 is provided. A foamed article produced from the pre-expanded particles has an excellent appearance, a flat surface and good mechanical strength, and is useful for wrapping material, insulating material, a container or a fender of cars.

REFERENCES:
patent: 4168353 (1979-09-01), Kitamori
patent: 4275023 (1981-06-01), Shimizu et al.
patent: 4303756 (1981-12-01), Kajimura et al.
patent: 4366263 (1982-12-01), Sato et al.
patent: 4399087 (1983-08-01), Akiyama et al.
patent: 4415680 (1983-11-01), Ushirokawa et al.
patent: 4436840 (1984-03-01), Akiyama et al.

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