【国外标准】 Standard Specification for Polyethylene Film

This specification covers the classification of polyethylene film and sheeting. Recycled polyethylene film or resin may be used as feedstock, and the film or sheeting may contain additives for surface property improvement, pigments, or stabilizers, or a combination of these, but they must conform to the requirements specified. Material covered in this specification shall be designated by a five-digit type number, with each numeral (from 0 to 5) indicating the cell limit within which the values of the density, impact strength, kinetic coefficient of friction, haze, and nominal thickness of the material falls under. The sheet or film shall be manufactured free, as commercially possible, of gels, streaks, pinholes, particles of foreign matter, and undispersed raw material, and without any other visible defects such as holes, tears, or blisters. The edges of the sheet or film shall be free of nicks and cuts. The surface of the sheet or film may also be treated by flame, corona discharge, or other means to improve the surface properties. Tests to determine the density, impact strength, kinetic coefficient of friction, haze, and nominal thickness of the material shall be performed and shall conform to the requirements specified.1.1 This specification covers the classification of polyethylene film up to 0.254 mm (0.010 in.) in thickness, inclusive. The film can contain additives for the improvement of the surface properties, pigments, or stabilizers, or combinations thereof.NOTE 1: Film is defined in Terminology D883 as an optional term for sheeting having a nominal thickness no greater than 0.254 mm (0.010 in.).1.2 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only.1.3 The following precautionary caveat pertains only to the test method portion, Section 8, of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.4 This specification allows for the use of recycled polyethylene film or resin as feedstock, in whole or in part, as long as all the requirements as governed by the producer and end user are also met.NOTE 2: There is no known ISO equivalent to this standard.1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.