ASTM D1709-08
Standard Test Methods for Impact Resistance of Plastic Film by the Free-Falling Dart Method
- Standard No.
- ASTM D1709-08
- Release Date
- 2008
- Published By
- American Society for Testing and Materials (ASTM)
- Status
- Replace By
- ASTM D1709-09
- Latest
- ASTM D1709-22
- Scope
- Test Methods A and B are used to establish the weight of the dart when 50 % of the specimens fail under the conditions specified.Data obtained by one test method cannot be compared directly with the other test method nor with those obtained from tests employing different conditions of missile velocity, impinging surface diameter, effective specimen diameter, and thickness. The values obtained by these test variables are highly dependent on the method of film fabrication.
The results obtained by Test Methods A and B are greatly influenced by the quality of film under test. The confidence limits of data obtained by this procedure can, therefore, vary significantly, depending on the sample quality, uniformity of film gage, die marks, contaminants, etc. (see Section 15).
Test Methods A and B have been found useful for specification purposes. Correlation between test results and field performance can usually be established.
The impact resistance of plastic film, while partly dependent on thickness, has no simple correlation with sample thickness. Hence, impact values cannot be normalized over a range of thickness without producing misleading data as to the actual impact resistance of the material. Data from these test methods are comparable only for specimens that vary by no more than ±25 % from the nominal or average thickness of the specimens tested.
Several impact test methods are used for film. It is sometimes desirable to know the relationships among test results derived by different test methods. A study was conducted in which four films made from two resins (polypropylene and linear low-density polyethylene), with two film thicknesses for each resin, were impacted using Test Methods D 1709 (Method A), D 3420
(Procedures A and B), and D 4272 . The test results are shown in the Appendix. Differences in results between Test Methods D 1709 and D 4272 may be expected since Test Methods D 1709 represents failure initiated energy, while Test Method D 4272 is initiation plus completion energy. Some films may show consistency when the initiation energy is the same as the total energy. This statement and the test data also appear in the significance sections and appendixes of Test Methods D 3420 and D 4272 . 1.1 These test methods cover the determination of the energy that causes plastic film to fail under specified conditions of impact of a free-falling dart. This energy is expressed in terms of the weight (mass) of the missile falling from a specified height which would result in 50 % failure of specimens tested.
1.2 Two test methods are described:
1.2.1 Test Method A employs a dart with a 38.10 ± 0.13-mm (1.500 ± 0.005-in.) diameter hemispherical head dropped from a height of 0.66 ± 0.01 m (26.0 ± 0.4 in.). This test method may be used for films whose impact resistances require masses of about 50 g or less to about 2 kg to fracture them.
1.2.2 Test Method B employs a dart with a 50.80 ± 0.13-mm (2.000 ± 0.005-in.) diameter hemispherical head dropped from a height of 1.50 ± 0.03 m (60.0 + 0.25, −1.70 in.). Its range of applicability is from about 0.3 kg to about 2 kg.
1.3 Two testing techniques are described:
1.3.1 The standard technique is the staircase method. By this technique, a uniform missile weight increment is employed during test a......
ASTM D1709-08 Referenced Document
- ASTM D1248 Standard Specification for Polyethylene Plastics Molding and Extrusion Materials
- ASTM D3420 Standard Test Method for Pendulum Impact Resistance of Plastic Film
- ASTM D374 Standard Test Methods for Thickness of Solid Electrical Insulation
- ASTM D4272 Standard Test Method for Total Energy Impact of Plastic Films By Dart Drop
- ASTM D618 Standard Practice for Conditioning Plastics for Testing
- ASTM D883 Standard Terminology Relating to Plastics
- ASTM E177 Standard Practice for Use of the Terms Precision and Bias in ASTM Test Methods
- ASTM E691 Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
ASTM D1709-08 history
- 2022 ASTM D1709-22 Standard Test Methods for Impact Resistance of Plastic Film by the Free-Falling Dart Method
- 2016 ASTM D1709-16ae1 Standard Test Methods for Impact Resistance of Plastic Film by the Free-Falling Dart Method
- 2016 ASTM D1709-16a Standard Test Methods for Impact Resistance of Plastic Film by the Free-Falling Dart Method
- 2016 ASTM D1709-16 Standard Test Methods for Impact Resistance of Plastic Film by the Free-Falling Dart Method
- 2015 ASTM D1709-15a Standard Test Methods for Impact Resistance of Plastic Film by the Free-Falling Dart Method
- 2015 ASTM D1709-15 Standard Test Methods for Impact Resistance of Plastic Film by the Free-Falling Dart Method
- 2009 ASTM D1709-09 Standard Test Methods for Impact Resistance of Plastic Film by the Free-Falling Dart Method
- 2008 ASTM D1709-08 Standard Test Methods for Impact Resistance of Plastic Film by the Free-Falling Dart Method
- 2004 ASTM D1709-04 Standard Test Methods for Impact Resistance of Plastic Film by the Free-Falling Dart Method
- 2003 ASTM D1709-03 Standard Test Methods for Impact Resistance of Plastic Film by the Free-Falling Dart Method
- 2001 ASTM D1709-01 Standard Test Methods for Impact Resistance of Plastic Film by the Free-Falling Dart Method
- 1998 ASTM D1709-98 Standard Test Methods for Impact Resistance of Plastic Film by the Free-Falling Dart Method
