ASTM D6288-09
(Practice)Standard Practice for Separation and Washing of Recycled Plastics Prior to Testing
Standard Practice for Separation and Washing of Recycled Plastics Prior to Testing
SIGNIFICANCE AND USE
Dirt, paper and mixtures of polymeric materials complicate the interpretation of data from procedures used to identify and, if desired, quantify the contaminants in recycled plastics.
SCOPE
1.1 The practice describes a procedure for separating recycled plastics based on their color (for example, green versus colorless) and a procedure for washing dirty, ground plastic which results in separation of light materials (density 1.00 g/cm3). This practice is not intended to represent generic washing procedures used in the plastics recycling industry. The described procedures are solely for preparation of plastic samples for use in other analytical tests. The procedure includes a room temperature wash step to facilitate separation of paper (for example, labels) followed by washing at an elevated temperature.
Note 1—Although not presented as a quantitative method, the procedure presented in this practice may be used to provide quantitative results. The user assumes the responsibility to verify the reproducibility of quantitative results.
1.2 The values stated in SI units are to be regarded as the standard.
1.3 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 2—There is no known ISO equivalent to this practice.
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Designation: D6288 − 09
StandardPractice for
Separation and Washing of Recycled Plastics Prior to
1
Testing
This standard is issued under the fixed designation D6288; 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* D5814 Practice for Determination of Contamination in Re-
cycled Poly(Ethylene Terephthalate) (PET) Flakes and
1.1 The practice describes a procedure for separating re-
Chips Using a Plaque Test
cycled plastics based on their color (for example, green versus
D5991 Practice for Separation and Identification of Poly(Vi-
colorless) and a procedure for washing dirty, ground plastic
nyl Chloride) (PVC) Contamination in Poly(Ethylene
which results in separation of light materials (density < 1.00
3 Terephthalate) (PET) Flake
g/cm ). This practice is not intended to represent generic
D7209 Guide for Waste Reduction, Resource Recovery, and
washing procedures used in the plastics recycling industry.The
Use of Recycled Polymeric Materials and Products
described procedures are solely for preparation of plastic
IEEE/ASTM SI-10 Standard for Use of the International
samples for use in other analytical tests. The procedure
System of Units (SI): The Modern Metric System
includes a room temperature wash step to facilitate separation
of paper (for example, labels) followed by washing at an
3. Terminology
elevated temperature.
3.1 The terminology used in this practice is in accordance
NOTE 1—Although not presented as a quantitative method, the proce-
withTerminologyD1600andGuideD7209.Unitsandsymbols
dure presented in this practice may be used to provide quantitative results.
are in accordance with Standard IEEE/ASTM SI-10.
The user assumes the responsibility to verify the reproducibility of
quantitative results. 3.2 Definitions of Terms Specific to This Standard:
3.2.1 light material—paper, polymers such as polyethylene
1.2 The values stated in SI units are to be regarded as the
and polypropylene, and other materials with densities less than
standard.
3
1.00 g/cm .
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
4. Summary
responsibility of the user of this standard to establish appro-
4.1 Different colored (for example, green versus colorless)
priate safety and health practices and determine the applica-
plastic materials are readily distinguished by visual inspection
bility of regulatory limitations prior to use.
of a sample.
NOTE 2—There is no known ISO equivalent to this practice.
4.2 Labels, glue residues and other plastics may absorb the
dyes used in some procedures for identifying contaminants or
2. Referenced Documents
these other contaminants may exhibit interfering fluorescence.
2
2.1 ASTM Standards:
Consequently, a standard procedure is provided for washing
D1600 Terminology forAbbreviatedTerms Relating to Plas-
the plastic prior to examination by these tests.
tics
4.3 This practice utilizes a room temperature wash step to
facilitate separation of paper (for example, labels) followed by
1
This practice is under the jurisdiction ofASTM Committee D20 on Plastics and
washing at an elevated temperature to permit separation of
is the direct responsibility of Subcommittee D20.95 on Recycled Plastics.
plastics and other contaminants based on densities. The room
Current edition approved Sept. 1, 2009. Published September 2009. Originally
temperature wash step effectively removes labels without
approved in 1998. Last previous edition approved in 2003 as D6288 - 98(2003).
DOI: 10.1520/D6288-09.
activating some adhesives.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
NOTE 3—The dye and fluorescence tests that may require plastic
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on washed by this procedure are specifically designed to detect poly(vinyl
the ASTM website. chloride) (PVC) contamination.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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D6288 − 09
NOTE 6—Although not required for all plastics, the room temperature
4.4 Washed recycled plastic materials are then used for tests
washing procedure is useful to remove labels from some products. This
such as those described in Practices D5814 or D5991.
step can reduce filter screen plugging from paper because the low
temperature does not activate some adhesives.
5. Si
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation:D6288–98 (Reapproved 2003) Designation: D 6288 – 09
Standard Practice for
Separation and Washing of Recycled Plastics Prior to
1
Testing
This standard is issued under the fixed designation D 6288; 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*
1.1 The practice describes a procedure for separating recycled plastics based on their color (for example, green versus colorless)
3
andaprocedureforwashingdirty,groundplasticwhichresultsinseparationoflightmaterials(density<1.00g/cm ).Thispractice
is not intended to represent generic washing procedures used in the plastics recycling industry.The described procedures are solely
forpreparationofplasticsamplesforuseinotheranalyticaltests.Theprocedureincludesaroomtemperaturewashsteptofacilitate
separation of paper (for example, labels) followed by washing at an elevated temperature.
NOTE 1—Although not presented as a quantitative method, the procedure presented in this practice may be used to provide quantitative results. The
user assumes the responsibility to verify the reproducibility of quantitative results.
1.2 The values stated in SI units are to be regarded as the standard.
1.3 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.
NOTE2—There is no equivalent ISO standard. 2—There is no known ISO equivalent to this practice.
2. Referenced Documents
2
2.1 ASTM Standards:
D 1600 Terminology for Abbreviated Terms Relating to Plastics
D5033Guide for the Development of Standards Relating to the Proper Use of Recycled Plastics Terminology for Abbreviated
Terms Relating to Plastics
D 5814 Practice for Determination of Contamination in Recycled Poly(Ethylene Terephthalate) (PET) Flakes and Chips Using
a Plaque Test
ED 5991Practice for Separation and Identification of Poly(Vinyl Chloride) (PVC) Contamination in Poly(Ethylene Terephtha-
3
late) (PET) Flake Practice for Separation and Identification of Poly(Vinyl Chloride) (PVC) Contamination in Poly(Eth-
ylene Terephthalate) (PET) Flake
D 7209 Guide for Waste Reduction, Resource Recovery, and Use of Recycled Polymeric Materials and Products
IEEE/ASTM SI 10 Standard for Use of the International System of Units (SI): The Modern Metric System
3. Terminology
3.1 The terminology used in this practice is in accordance with Terminology D 1600 and Guide D5033.D 7209. Units and
symbols are in accordance with Standard IEEE/ASTM SI 10.10.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 light material—paper, polymers such as polyethylene and polypropylene, and other materials with densities less than 1.00
3
g/cm .
4. Summary
4.1 Different colored (for example, green versus colorless) plastic materials are readily distinguished by visual inspection of a
sample.
4.2 Labels, glue residues and other plastics may absorb the dyes used in some procedures for identifying contaminants or these
1
This practice is under the jurisdiction of ASTM Committee D20 on Plastics and is the direct responsibility of Subcommittee D20.95 on Recycled Plastics.
Current edition approved July 10, 2003.Sept. 1, 2009. Published September 2003.2009. Originally approved in 1998. Last previous edition approved in 19982003 as
D 6288 - 98(2003).
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
, Vol 08.01.volume information, refer to the standard’s Document Summary page on the ASTM website.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ----------------------
D6288–09
other contaminants may exhibit interfering fluorescence. Consequently, a standard procedure is provided for washing the plastic
prior to examination by these tests.
4.3 This practice utilizes a room temperature wash step to facilitate separation of paper (for example, labels) followed by
washing at an elevated temperature to permit separation of plastics and other contaminants based on densities. Th
...
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