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This specification covers uniaxially, biaxially, or balanced oriented polypropylene (OPP) films in a specified thickness range. Films can contain colorants, stabilizers, or other additives, and can be coated for the improvement of performance properties such as heat sealability, gas permeability, and so forth. Films can also be annealed (heat-set) to reduce the unrestrained linear shrinkage and shrink tension on exposure to heat. The base polymer shall be a Group 1 or 2 polypropylene (PP), or a blend of such with one or more other polymers, provided the PP fraction is the main component. Films shall adhere to physical requirements as defined for appearance, blocking, thickness, package yield, width, length, and requirements for those intended for the packaging of food, drugs, and cosmetics. For characterization purposes, this specification provides a cell classification based on six performance parameters characterized by a code designation (1 to 6), as follows: (1) coefficient of friction; (2) unrestrained linear thermal shrinkage; (3) wetting tension; (4) heat-sealability; (5) gloss; (6) haze.
This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
1.1 This specification covers oriented polypropylene (OPP) film in the thickness range from 10 to 75 μm (0.4 to 3.0 mils).
1.2 The film can contain colorants, stabilizers, or other additives, and can be coated for the improvement of performance properties (heat sealability, gas permeability, and so forth).
1.3 The film can be annealed (heat-set) to reduce the unrestrained linear shrinkage and shrink tension on exposure to heat.
1.4 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only.
1.5 The following safety hazards caveat pertains only to the test methods portion, Section , 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 and health practices and determine the applicability of regulatory limitations prior to use.
Note 1: There is no known ISO equivalent to this standard.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D618 Practice for Conditioning Plastics for Testing
D882 Test Method for Tensile Properties of Thin Plastic Sheeting
D1003 Test Method for Haze and Luminous Transmittance of Transparent Plastics
D1434 Test Method for Determining Gas Permeability Characteristics of Plastic Film and Sheeting
D1746 Test Method for Transparency of Plastic Sheeting
D1894 Test Method for Static and Kinetic Coefficients of Friction of Plastic Film and Sheeting
D1922 Test Method for Propagation Tear Resistance of Plastic Film and Thin Sheeting by Pendulum Method
D2457 Test Method for Specular Gloss of Plastic Films and Solid Plastics
D2578 Test Method for Wetting Tension of Polyethylene and Polypropylene Films
D2732 Test Method for Unrestrained Linear Thermal Shrinkage of Plastic Film and Sheeting
D2838 Test Method for Shrink Tension and Orientation Release Stress of Plastic Film and Thin Sheeting
D3354 Test Method for Blocking Load of Plastic Film by the Parallel Plate Method
D3892 Practice for Packaging/Packing of Plastics
D3985 Test Method for Oxygen Gas Transmission Rate Through Plastic Film and Sheeting Using a Coulometric Sensor
D4000 Classification System for Specifying Plastic Materials
D4101 Specification for Polypropylene Injection and Extrusion Materials
D4321 Test Method for Package Yield of Plastic Film
D5946 Test Method for Corona-Treated Polymer Films Using Water Contact Angle Measurements
D6988 Guide for Determination of Thickness of Plastic Film Test Specimens
E96/E96M Test Methods for Water Vapor Transmission of Materials
E1870 Test Method for Odor and Taste Transfer from Polymeric Packaging Film
F88 Test Method for Seal Strength of Flexible Barrier Materials
ICS Number Code 83.140.10 (Films and sheets)
UNSPSC Code 13111211(Polypropylene films)