Feedblock coextrusion of modified acrylic capstock

Details Feedblock coextrusion of modified acrylic capstock Feedblock coextrusion of modified acrylic capstock

1992-11-12

1994-06-07

Thurlow, Jeffery

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Layered, stratified traversely of length, or multiphase...

26417717, 26433118, 4251335, B29C 4706

Patent

active

053187377

ABSTRACT:
A method for preparing a plastic composite by feedblock coextrusion of a molten acrylic based capstock overlying and integrally bonded to an underlying structural plastic ply. The composition of the capstock contains from about 40 to about 88 wt. % of an acrylic polymer having a molecular weight of at least about 125,000 daltons, and from about 12 to about 60 wt. % of an acrylate-based impact modifier resin in the form of discrete multi-layered polymeric particles. The capstock composition has a melt flow index of about 0.4 to about 0.75 grams/10 minutes (ASTM Method D-1238, Condition I) and the underlying structural ply has substantially the same melt flow index as that of the capstock composition.

REFERENCES:
patent: 3476627 (1969-11-01), Squires
patent: 3557265 (1971-01-01), Chisholm et al.
patent: 3607615 (1971-09-01), Hatakeyama et al.
patent: 3642752 (1972-02-01), Sutter
patent: 3793402 (1974-02-01), Owens
patent: 3882219 (1975-05-01), Wiley
patent: 3918865 (1975-11-01), Nissel
patent: 3933964 (1976-01-01), Brooks
patent: 4100243 (1978-07-01), Wissinger et al.
patent: 4101702 (1978-07-01), Churchill et al.
patent: 4144011 (1979-03-01), Sponaugle
patent: 4183777 (1980-01-01), Summers et al.
patent: 4187270 (1980-02-01), Bartrum
patent: 4189520 (1980-02-01), Gauchel
patent: 4204821 (1980-05-01), Gauchel et al.
patent: 4296062 (1981-10-01), Gauchel et al.
patent: 4483812 (1984-11-01), Hahn et al.
patent: 4731213 (1988-03-01), Klepsch
patent: 4856975 (1989-08-01), Gearhart
patent: 5055346 (1991-10-01), Rohrbacher
Nissel, F. R., "Sheet Co-Extrusion After 15 Years-1981 Status Report", pp. 14-19, in Advances in Plastics Technology, Oct., 1981.
Rohm and Haas Company's Technical Literature, "Coextruded Plexiglas (TM) DR (TM)/ABS Composites", dated approximately 1977.
"Coextruded Plexiglas DR/ABS/Composites"; 1977.

Affiliated with

Also associated with

Rating

Feedblock coextrusion of modified acrylic capstock does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Feedblock coextrusion of modified acrylic capstock, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Feedblock coextrusion of modified acrylic capstock will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-791130