Claims
- 1. In a blend consisting essentially of low density polyethylene and crystalline polypropylene, the improvement wherein
- the polyethylene amounts to 65 to 95% by weight of the blend and has a density in the range of 0.90 to 0.92 g/cm.sup.3, a melting temperature of less than 107.degree. C. and a melt index of at least 25, and
- the polypropylene amounts to 5 to 35% of weight of the blend and has a melt flow rate of at least 3, and a ratio of weight-to-number average molecular weight of at least 4.
- 2. A blend of claim 1 wherein the polyethylene amounts to 75 to 85% and the polypropylene amounts to 15 to 25% by weight of the blend.
- 3. A blend of claim 1 or 2 wherein the polyethylene density, melting temperature and melt index are respectively in the ranges of 0.905 to 0.913 g/cm.sup.3, 102.degree. to 106.degree. C., and 30 to 70, the polypropylene melt flow rate is less than 35, and the polypropylene ratio of average molecular weights is less than 12.
- 4. A blend of claim 1 or 2 in the form of fiber in which the polyethylene constitutes a continuous phase in which the polypropylene is dispersed as a second phase.
CROSS-REFERENCE TO RELATED APPLICATION
This application is a continuation-in-part of application Ser. No. 686,917, filed Dec. 27, 1984, now abandoned.
US Referenced Citations (8)
Foreign Referenced Citations (1)
Number |
Date |
Country |
1129052 |
Dec 1981 |
JPX |
Non-Patent Literature Citations (2)
Entry |
W. H. Skoroszewski, "Parameters Affecting Processing of Polymers and Polymer Blends," Plastics and Polymers, vol. 40, No. 147, 142-152 (Jun. 1972). |
P. Robson et al., "Drawing Behavior of Polyethylene-Polypropylene Blends," Journal of Applied Polymer Science, vol. 26, 3515-3521 (1981). |
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
686917 |
Dec 1984 |
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