NPFC - L-P-390
PLASTIC, MOLDING AND EXTRUSION MATERIAL, POLYETHYLENE AND COPOLYMERS (LOW, MEDIUM, AND HIGH DENSITY)
| Organization: | NPFC |
| Publication Date: | 10 August 1971 |
| Status: | active |
| Page Count: | 23 |
scope:
This specification covers low, medium, and high density polyethylene and copolymers molding and extrusion material for general purpose use, for use as dielectric material, and for weather-resistant applications (see 6.1). For the purpose of this specification, the term polyethylene is used when referring to any of the types, classes, grades, and categories.
This specification does not cover all the types, classes, grades, and categories of polyethylene, but only those that are most generally used by the Federal Government.
Polyethylene shall be of the types, classes, grades, and categories shown in tables I and II, as specified (see 6.2). TABLE II. Categories
Category Melt-index1/ (nominal flow rate)
grams/10 minutes
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intended Use:
This type is for general purpose use.
Grades 1 and 2 are suggested for applications requiring different levels of tensile strength.
Grades 1 and 3 are suggested for applications... View More
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