Polypropylene foam sheets

Details Polypropylene foam sheets Polypropylene foam sheets

1991-12-11

1992-09-22

Foelak, Morton

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

4283166, 4283171, 4283193, 4283197, 521 79, 521143, 521144, C08J 908, C08J 914

Patent

active

051495791

ABSTRACT:
A thermoformable, rigid or semi-rigid polypropylene foam sheet having a smooth surface and a uniform cell structure and a density of at least 2.5 lbs/ft.sup.3 is prepared by extruding a mixture of a nucleating agent, a physical blowing agent and a polypropylene resin having a high melt strength and high melt elasticity.

REFERENCES:
patent: 3637458 (1972-01-01), Parrish
patent: 3787443 (1974-01-01), Parrish
patent: 3787543 (1974-01-01), Parrish
patent: 3819784 (1974-06-01), Hasanna et al.
patent: 3830900 (1974-08-01), Winstead
patent: 4424293 (1984-01-01), Nojiri
patent: 4467052 (1984-08-01), Barnwell et al.
patent: 4525257 (1985-06-01), Kurty et al.
patent: 4940736 (1990-07-01), Alteepping et al.
Y. D. Lee and L. F. Wang, J. Applied Polymer Science 32(4), 4639-4647 (1986).
J. S. Colton, Plastics Engineering 44(8), 53-55 (1988).
F. W. Billmeyer, Textbook of Polymer Science, 3d Ed, 186-219 (1984).
A. Nojiri, T. Sawazaki, T. Konishi, S. Kudo, S. Onobori Furukawa Review 2, 34-42 (1982) through Chem. Abs. 97, 217250u (1982).
K. W. Suh and D. D. Webb, "Cellular Materials", in Encyclopedia Polymer Science & Engineering 3, 1-59 (1985).

Affiliated with

Also associated with

Rating

Polypropylene foam sheets does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Polypropylene foam sheets, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polypropylene foam sheets will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1067374