Blends and films of linear ethylene polymers with polyurethane a

Details Blends and films of linear ethylene polymers with polyurethane a Blends and films of linear ethylene polymers with polyurethane a

1989-02-06

1990-10-23

Carrillo, Ana L.

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

264108, 525123, 525131, D01F 102, C08L 7500

Patent

active

049650343

ABSTRACT:
Head pressure and extruder torque in the extrustion of linear ethylene polymers such as linear low density polyethylene (LLDPE) are reduced by adding a small amount (less than 5 weight percent) of a thermoplastic polyurethane. Films extruded from the blend exhibit better surface appearance by reduction of melt fracture.

REFERENCES:
patent: 3970715 (1976-07-01), Jarrett
patent: 4394474 (1983-07-01), McKinney et al.
patent: 4701487 (1987-10-01), Hakim
Short, J. N., Olefin Polymers (Low Pressure LDPE), Encyclopedia of Chemical Technology, Kirk-Othmer, 3rd Ed., J. Wiley & Sons, 1981, vol. 16, 385-390.
Hoga, J. P., Olefin Polymers (Linear HDPE), Encyclopedia of Chemical Technology, Kirk-Othmer, 3rd Ed., J. Wiley & Sons, 1981, vol. 16, 421-425.

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