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ASTM D3369-96

(Specification)

Standard Specification for Polytetrafluoroethylene (PTFE) Resin Cast Film

Standard Specification for Polytetrafluoroethylene (PTFE) Resin Cast Film

SCOPE
1.1 This specification covers PTFE-fluorocarbon resin cast film in thicknesses from 0.025 to 0.127 mm (0.001 to 0.005 in.).
1.2 PTFE film and sheet are made by several different processes and the properties of the products reflect both the different starting polymers and the different processes. Properties that are affected include, but are not limited to: tensile strength and elongation at break, porosity, anisotropy, and molecular weight. A related standard is Specifications D 3308. It is important to examine each of the other standards to select the one appropriate for the application.
1.3 The values in SI units are to be regarded as standard. The SI units given in parentheses are for information only.
Note 1—There is no similar or equivalent ISO standard.  
1.4. The following precautionary caveat pertains only to the test methods portion, Section 7, 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.

General Information

Status
Historical
Publication Date
09-Nov-2001
ICS
83.140.10 - Films and sheets
Technical Committee
D20 - Plastics
Drafting Committee
D20.15 - Thermoplastic Materials
Current Stage
Ref Project

Relations

Replaced By
ASTM D3369-01 - Standard Specification for Polytetrafluoroethylene (PTFE) Resin Cast Film (Withdrawn 2006)
Effective Date
10-Nov-2001

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ASTM D3369-96 - Standard Specification for Polytetrafluoroethylene (PTFE) Resin Cast FilmASTM D3369-96 - Standard Specification for Polytetrafluoroethylene (PTFE) Resin Cast Film
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ASTM D3369-96 - Standard Specification for Polytetrafluoroethylene (PTFE) Resin Cast Film
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NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: D 3369 – 96 An American National Standard
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Specification for
Polytetrafluoroethylene (PTFE) Resin Cast Film
This standard is issued under the fixed designation D 3369; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope D 1389 Test Method for Proof-Voltage Testing of Thin
Solid Electrical Insulating Materials
1.1 This specification covers PTFE-fluorocarbon resin cast
D 1898 Practice for Sampling of Plastics
film in thicknesses from 0.025 to 0.127 mm (0.001 to 0.005
D 3293 Specification for PTFE Resin Molded Sheet
in.).
D 3308 Specification for PTFE Resin Skived Tape
1.2 PTFE film and sheet are made by several different
D 3892 Practice for Packaging/Packing of Plastics
processes and the properties of the products reflect both the
D 4895 Specification for Polytetrafluoroethylene (PTFE)
different starting polymers and the different processes. Proper-
Resin Produced from Dispersion
ties that are affected include, but are not limited to: tensile
strength and elongation at break, porosity, anisotropy, and
3. Classification
molecular weight. Related standards are Specifications D 3293
3.1 This specification covers one type of TFE-fluorocarbon
and D 3308. It is important to examine each of the other
resin cast film.
standards to select the one appropriate for the application.
1.3 The values in SI units are to be regarded as standard.
4. Physical Requirements
The SI units given in parentheses are for information only.
4.1 The film shall conform to the property values specified
NOTE 1—There is no similar or equivalent ISO standard.
in Table 1.
4.2 The length and width of the film shall be as agreed upon
1.4 .The following precautionary caveat pertains only to the
between the purchaser and the manufacturer. The tolerance in
test methods portion, Section 6, of this specification. This
length and width shall be + 6.35 mm, − 0 mm ( + 0.25 in., − 0
standard does not purport to address all of the safety concerns,
in.).
if any, associated with its use. It is the responsibility of the user
4.3 Thickness tolerances shall be as specified in Table 2
of this standard to establish appropriate safety and health
when measured at any point at a temperature range from 23 to
practices and determine the applicability of regulatory limita-
30°C (73.4 to 86°F).
tions prior to use.
4.4 The film shall be natural in color and may vary from
2. Referenced Documents
cloudy to milky transparent, depending upon thickness.
4.5 The material shall be essentially free of surface blisters,
2.1 ASTM Standards:
wrinkles, cracks, and other surface defects, unless otherwise
D 149 Test Method for Dielectric Breakdown Voltage and
Dielectric Strength of Solid Electrical Insulating Materials agreed upon between purchaser and manufacturer.
4.6 As may be agreed upon between purchaser and manu-
at Commercial Power Frequencies
D 374 Test Methods for Thickness of Solid Electrical Insu- facturer, one or both sides of the material shall be given a
surface treatment to enable the surface to take adhesives or
lation
D 618 Practice for Conditioning Plastics and Electrical printing inks.
Insulating Materials for Testing
5. Sampling
D 792 Test Methods for Density and Specific Gravity (Rela-
5.1 Unless otherwise agreed upon between the purchaser
tive Density) of Plastics by Displacement
and the manufacturer, the materials shall be sampled in
accordance with the sampling procedure prescribed in Practice
This specification is under the jurisdiction of ASTM Committee D-20 on
Plastics and is the direct responsibility of Subcommittee D20.15 on Thermoplastic D 1898. Adequate statistical sampling shall be considered an
Materials.
acceptable alternative. A lot shall consist of all material of the
Current edition approved July 10, 1996. Published September 1996. Originally
same thickness delivered at the same time.
published as D 3369 – 75. Last previous edition D 3369 – 91a.
In this revision, the Inspection, Rejection and Rehearing, and Certification
Sections were revised.
Annual Book of ASTM Standards, Vol 10.01. Annual Book of ASTM Standards, Vol 08.02.
3 5
Annual Book of ASTM Standards, Vol 08.01. Annual Book of ASTM Standards, Vol 08.03.
D 3369
TABLE 1 Property Requirements
Electrical Flaws at 800
A B
Thickness, Elongation Dielectric Strength,
Tensile Strength, MPa (psi) Melting Point, °C V/mil, per 30.5 m (100 ft)
mm (in.) min, % min, V/mil
length, max
0.025 (0.001) 29.67 (4300) 400 327 6 10 4200 8
0.051 (0.002) 29.67 (4300) 400 327 6 10 4000 4
0.076 (0.003) 29.67 (4300) 400 327 6 10 3400 2
0.102 (0.004) 31.05 (4500) 400 327 6 10 3000 0
0.127 (0.00
...

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This specification covers polyethylene sheeting with a determined thickness intended for construction, industrial and agricultural applications. The sheeting shall be made from polyethylene or modified polyethylene, such as an ethylene copolymer consisting of a major portion of ethylene in combination with a minor portion of some other monomer, or a mixture of polyethylene with a lesser amount of other polymers. General requirements for the material are also observed according to their appearance, dimensions in size and tolerance and minimum net weight. The sheeting may be natural, color-tinted, translucent or opaque. The tests given are intended primarily for use as production tests in conjunction with manufacturing processes and inspection methods to insure conformity of sheeting with the requirements of this specification. These tests shall be done in order to determine the following properties: thickness, length and width, weight, impact resistance, tensile properties, reflectance, luminous transmittance, water vapor transmission, and heat sealability.
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ASTM D4204-16(2023)(Practice)
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4.1 This practice is intended to assist task groups participating in a round-robin study with the preparation of test sets of film specimens from film samples in the form of rolls on a core.  
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ASTM D5047-17(2023)(Specification)
Standard Specification for Polyethylene Terephthalate Film and Sheeting

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This specification establishes the dimensional (length and width, thickness, and weight) requirements for biaxially oriented polyethylene terephthalate film and sheeting, both virgin and recycled. For this specification, polyethylene terephthalate film and sheeting shall be defined as the material derived from terephthalic acid and ethylene glycol and shall consist of at least 90 % polyethylene terephthalate homopolymer. The film or sheeting shall be furnished flat or in rolls in the dimensions specified. This specification does not apply to coated, coextruded, tinted, pigmented, or metallized film or sheeting.
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ASTM D4272/D4272M-23(Test Method)
Standard Test Method for Total Energy Impact of Plastic Films by Dart Drop

SIGNIFICANCE AND USE
5.1 Evaluation of the impact toughness of film is important in predicting the performance of a material in applications such as packaging, construction, and other uses. The test simulates the action encountered in applications where moderate-velocity blunt impacts occur in relatively small areas of film.  
5.2 The values obtained by this test method are highly dependent on the method and conditions of film fabrication as well as the type and grade of resin.  
5.3 Test methods employing different missile velocities, impinging surface diameters, or effective specimen diameters will most likely produce different results. Data obtained by this test method cannot necessarily be compared directly with those obtained by other test methods.  
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Standard Test Method for Transparency of Plastic Sheeting

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4.1 The attribute of clarity of a sheet, measured by its ability to transmit image-forming light, correlates with its regular transmittance. Sensitivity to differences improves with decreasing incident beam- and receptor-angle. If the angular width of the incident beam and of the receptor aperture (as seen from the specimen position) are of the order of 0.1° or less, sheeting of commercial interest have a range of transparency of about 10 to 90 % as measured by this test. Results obtained by the use of this test method are greatly influenced by the design parameters of the instruments; for example, the resolution is largely determined by the angular width of the receptor aperture. Caution should therefore be exercised in comparing results obtained from different instruments, especially for samples with low regular transmittance.  
4.2 Regular transmittance data in accordance with this test method correlate with the property commonly known as “see-through,” which is rated subjectively by the effect of a hand-held specimen on an observer's ability to distinguish clearly a relatively distant target. This correlation is poor for highly diffusing materials because of interference of scattered light in the visual test.
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1.1 This test method covers the measurement of the transparency of plastic sheeting in terms of regular transmittance (Tr). Although generally applicable to any translucent or transparent material, it is principally intended for use with nominally clear and colorless thin sheeting.  
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Note 2: For additional information, see Terminology E284 and Practice E1164.  
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ASTM D1922-23(Test Method)
Standard Test Method for Propagation Tear Resistance of Plastic Film and Thin Sheeting by Pendulum Method

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4.1 This test method is of value in ranking relative tearing resistance of various plastic films and thin sheeting of comparable thickness. Experience has shown the test to have its best reliability on relatively less extensible films and sheeting. Variable elongation and oblique tearing effects on the more extensible films preclude its use as a precise production-control tool for these types of plastics. This test method should be used for specification acceptance testing only after it has been demonstrated that the data for the particular material are acceptably reproducible. This test method should be used for service evaluation only after its usefulness for the particular application has been demonstrated with a number of different films.  
4.2 This test method has been widely used as one index of the tearing resistance of plastic film and thin sheeting used in packaging applications. While it is not always be possible to correlate film tearing data with its other mechanical or toughness properties, the apparatus of this test method provides a controlled means for tearing specimens at straining rates approximating some of those found in actual packaging service.  
4.3 Due to orientation during their manufacture, plastic films and sheeting frequently show marked anisotropy in their resistance to tearing. This is further complicated by the fact that some films elongate greatly during tearing, even at the relatively rapid rates of loading encountered in this test method. The degree of this elongation is dependent in turn on film orientation and the inherent mechanical properties of the polymer from which it is made. These factors make tear resistance of some films reproducible between sets of specimens to ±5 % of the mean value, while others potentially show no better reproducibility than ±50 %.  
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1.1 This test method2 covers the determination of the average force to propagate tearing through a specified length of plastic film or nonrigid sheeting after the tear has been started, using an Elmendorf-type tearing tester. Two specimens are cited, a rectangular type, and one with a constant radius testing length. The latter shall be the preferred or referee specimen.  
1.2 Because of (1) difficulties in selecting uniformly identical specimens, (2) the varying degree of orientation in some plastic films, and (3) the difficulty found in testing highly extensible or highly oriented materials, or both, the reproducibility of the test results may be variable and, in some cases, not good or misleading. Provisions are made in the test method to address oblique directional tearing which may be found with some materials.  
1.3 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only.  
1.4 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. Specific precautionary statements are given in 13.1.
Note 1: Film has been arbitrarily defined as sheeting having nominal thickness not greater than 0.25 mm (0.010 in.).
Note 2: This standard is equivalent to ISO 6383-2.  
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.

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ASTM D2578-23(Test Method)
Standard Test Method for Wetting Tension of Polyethylene and Polypropylene Films

SIGNIFICANCE AND USE
5.1 When a drop of liquid rests on the surface of a solid, and a gas is in contact with both, the forces acting at the interfaces must balance. These forces can be represented by surface energies acting in the direction of the surfaces and it follows that:
   where:
  θ  =  angle of contact of the edge of the drop with the solid surface,   γGL  =  surface energy of the gas - liquid interface,   γGS  =  surface energy of the gas - solid interface, and   γSL  =  surface energy of the solid - liquid interface.    
5.1.1 The right side of the above equation (the difference between the surface energies of the gas - solid and solid - liquid interfaces) is defined as the wetting tension of the solid surface. It is not a fundamental property of the surface but depends on interaction between the solid and a particular environment.  
5.1.2 When the gas is air saturated with vapors of the liquid, γGL will be the surface tension of the liquid. If the angle of contact is 0° the liquid is said to just wet the surface of the solid, and in this particular case (since cos θ = 1) the wetting tension of the solid will be equal to the surface tension of the liquid.  
5.2 The ability of polyethylene and polypropylene films to retain inks, coatings, adhesives, etc., is primarily dependent upon the character of their surfaces, and can be improved by one of several surface-treating techniques. These same treating techniques have been found to increase the wetting tension of a polyethylene or a polypropylene film surface in contact with mixtures of formamide and ethyl Cellosolve in the presence of air. It is therefore possible to relate the wetting tension of a polyethylene or a polypropylene film surface to its ability to accept and retain inks, coatings, adhesives, etc. The measured wetting tension of a specific film surface can only be related to acceptable ink, coating, or adhesive retention through experience. Wetting tension in itself is not a completely acceptable measur...
SCOPE
1.1 This test method covers the measurement of the wetting tension of a polyethylene or polypropylene film surface in contact with drops of specific test solutions in the presence of air.  
1.2 The values stated in SI units are to be regarded as standard. The values given in parentheses are mathematical conversions to inch-pound units that are provided for information only and are not considered standard.
Note 1: This test method and the specified reagents were specifically developed for polyethylene and polypropylene films. It is possible to utilize this test method and the specified reagents for films composed of other polymers, but this can affect the surface energies of the gas-liquid and solid-liquid interfaces, which will affect the contact angle and wetting tension. The applicability and significance for use of non-polyolefin materials must be established by the user.  
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Note 2: This test method is equivalent to ISO 8296.  
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Standard Test Method for Diffuse Light Transmission Factor of Reinforced Plastics Panels

SIGNIFICANCE AND USE
4.1 The purpose of this test method is to obtain the diffuse light transmittance factor of both flat and corrugated translucent building panels by the use of simple apparatus and by employing as a light source a combination of fluorescent tubes whose energy distribution closely approximates CIE Source C.
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1.2 The values stated in SI units are to be regarded as the standard. The values given in the parentheses are for information only.  
1.3 The text of this standard references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in Tables and Figures) shall not be considered as requirements of this standard.  
1.4 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.
Note 1: 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.

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ASTM D2291/D2291M-22(Practice)
Standard Practice for Fabrication of Ring Test Specimens for Glass-Resin Composites

SIGNIFICANCE AND USE
4.1 This practice provides a uniform procedure for fabricating glass fiber/thermoset resin ring samples for use as test specimens. Specimens so prepared can be used in Test Methods D2290 and D2344/D2344M.
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1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the standard.  
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