Standard Specification for Biodegradable Plastics Used as Coatings on Paper and Other Compostable Substrates

ABSTRACT
This specification establishes the requirements for labelling of materials and products (including packaging), wherein a biodegradable plastic film or coating is attached (either through lamination or extrusion directly onto the paper) to compostable substrates and the entire product or package is designed to be composted in municipal and industrial aerobic composting facilities. This specification, however, does not describe the contents of the product or their performance with regards to compostability or biodegradability. In order to compost satisfactorily, the product must demonstrate each of the three characteristics as follows: (1) proper disintegration during composting; (2) adequate level of inherent biodegradation; and (3) no adverse impacts on the ability of composts to support plant growth.
SCOPE
1.1 This specification covers biodegradable plastics and products (including packaging), where plastic film or sheet is attached (either through lamination or extrusion directly onto the paper) to substrates and the entire product or package is designed to be composted in municipal and industrial aerobic composting facilities.
1.2 This specification is intended to establish the requirements for labeling of materials and products, including packaging, using coatings of biodegradable plastics, as "compostable in municipal and industrial composting facilities."
1.3 The properties in this specification are those required to determine if products (including packaging) using plastic films or sheets will compost satisfactorily, including biodegrading at a rate comparable to known compostable materials. Further, the properties in the specification are required to assure that the degradation of these materials will not diminish the value or utility of the compost resulting from the composting process.
1.4 This standard does not describe contents or their performance with regard to compostability or biodegradability.
1.5 The following safety hazards caveat pertains to the test methods portion of this standard: 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 health and safety practices and to determine the applicability of regulatory limitations prior to use.Note 1—No equivalent ISO specifications exist for this standard.

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Publication Date
09-Jun-2003
Current Stage
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ASTM D6868-03 - Standard Specification for Biodegradable Plastics Used as Coatings on Paper and Other Compostable Substrates
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D6868 – 03
Standard Specification for
Biodegradable Plastics Used as Coatings on Paper and
Other Compostable Substrates
This standard is issued under the fixed designation D6868; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope D5338 Test Method for Determining Aerobic Biodegrada-
tion of Plastic Materials Under Controlled Composting
1.1 This specification covers biodegradable plastics and
Conditions
products (including packaging), where plastic film or sheet is
D6002 Guide forAssessing the Compostability of Environ-
attached (either through lamination or extrusion directly onto
mentally Degradable Plastics
the paper) to substrates and the entire product or package is
D6400 Specification for Compostable Plastics
designed to be composted in municipal and industrial aerobic
2.2 Organization for Economic Development (OECD)
composting facilities.
Standard:
1.2 This specification is intended to establish the require-
OECD Guideline 208 Terrestrial Plants, Growth Test
ments for labeling of materials and products, including pack-
2.3 Comite Europeen de Normalisation (CEN):
aging, using coatings of biodegradable plastics, as “com-
EN 13432 Packaging-Requirements for Packaging Recov-
postable in municipal and industrial composting facilities.”
erable through Composting and Biodegradation-Test
1.3 The properties in this specification are those required to
Scheme and Evaluation Criteria for the Final Acceptance
determine if products (including packaging) using plastic films
of Packaging
or sheets will compost satisfactorily, including biodegrading at
2.4 ISO Standards:
a rate comparable to known compostable materials. Further,
ISO 14851 Determination of the ultimate aerobic biode-
the properties in the specification are required to assure that the
gradability of plastic materials in an aqueous medium—
degradation of these materials will not diminish the value or
Method by measuring the oxygen demand in a closed
utility of the compost resulting from the composting process.
respirometer
1.4 This standard does not describe contents or their perfor-
ISO 14852 Determination of the ultimate aerobic biode-
mance with regard to compostability or biodegradability.
gradability of plastic materials in an aqueous medium—
1.5 The following safety hazards caveat pertains to the test
Method by analysis of evolved carbon dioxide
methods portion of this standard: This standard does not
ISO 14855 Evaluation of the Ultimate Aerobic Biodegrad-
purport to address all of the safety concerns, if any, associated
ability and Disintegration of Plastics under Controlled
with its use. It is the responsibility of the user of this standard
Composting Conditions-Method by Analysis of Evolved
to establish appropriate health and safety practices and to
Carbon Dioxide
determine the applicability of regulatory limitations prior to
ISO 16929 Determination of the degree of disintegration of
use.
plastic materials under defined composting conditions in a
NOTE 1—No equivalent ISO specifications exist for this standard.
pilot-scale test
2.5 Government Standard:
2. Referenced Documents
2.1 ASTM Standards:
D883 Terminology Relating to Plastics
This specification is under the jurisdiction of ASTM Committee D20 on
Plastics and is the direct responsibility of Subcommittee D20.96 on Environmen-
tally Degradable Plastics.
Current edition approved June 10, 2003. PublishedAugust 2003. DOI: 10.1520/
D6868-03.
2 3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Available from Organization for Economic Development, Director of Informa-
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM tion, 2 rue Andre Pascal, 75775 Paris Cedex 16, France.
Standards volume information, refer to the standard’s Document Summary page on Available from American National Standards Institute (ANSI), 25 W. 43rd St.,
the ASTM website. 4th Floor, New York, NY 10036, http://www.ansi.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
D6868 – 03
40 CFR Part 503.13 Standards for the Use or Disposal of labeling as “compostable” in accordance with the guidelines
5 6
Sewage Sludge issued by the Federal Trade Commission.
3. Terminology
5. Basic Requirements
3.1 Definitions: Definitions-Definitions appearing in this
5.1 In order to compost satisfactorily, a product or material
specification are found in Terminology D883, unless otherwise
must demonstrate each of the characteristics found in 5.1.1-
noted.
5.1.3, and which are quantified in Section 6.
3.1.1 biodegradable plastic—a degradable plastic in which
5.1.1 Disintegration During Composting—A product or
the degradation results from the action of naturally occurring
material will disintegrate during composting such that any
microorganisms such as bacteria, fungi, and algae.
remaining residuals (plastic or substrate) are not readily
3.1.2 compostable plastic—a plastic that undergoes degra-
distinguishable from the other organic materials in the finished
dationbybiologicalprocessesduringcompostingtoyieldCO ,
product. Additionally, the material or product must not be
water, inorganic compounds, and biomass at a rate consistent
found in significant quantities during screening prior to final
with other known compostable materials and leave no visible,
distribution of the compost.
distinguishable or toxic residue.
5.1.2 Inherent Biodegradation—Alevel of inherent biodeg-
3.1.3 composting—a managed process that controls the
radation for the plastic coatings shall be established by tests
biological decomposition and transformation of biodegradable
under controlled conditions, that are comparable to known
materials into a humus-like substance called compost: the
compostable materials.
aerobic mesophilic and thermophilic degradation of organic
5.1.3 No Adverse Impacts on Ability of Compost to Support
matter to make compost; the transformation of biologically
Plant Growth—After incorporation with soils, the tested prod-
decomposable material through a controlled process of biooxi-
ucts or materials shall not adversely impact on the ability of
dation that proceed through mesophilic and thermophilic
composts to support plant growth, when compared to composts
phases and results in the production of carbon dioxide, water,
derived from biowaste without any addition of test or reference
minerals, and stabilized organic matter (compost or humus).
materials. Additionally, the polymeric products or other mate-
3.1.3.1 Discussion—Com
...

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