Expected changes to AATCC Test Methods

Complete TCR report can be downloaded from
http://www.aatcc.org/testing/committees/docs/November2008TCRMinutes.pdf

RA23, Colorfastness to Water: Changes were proposed to be made to the following
methods to provide consistency between the methods:
A) Multifiber test fabric: TMs 15 (Colorfastness to Perspiration), 106 (Colorfastness to Water: Sea), and 107 (Colorfastness to Water), will be revised to specify MF #10 with the exception of Silk, and then MF # 1 will be required;
B) Sample Preparation: TMs 15, 106, 107 will also be revised to use wording in ISO 105-E04 as an option;
C) Methods need to be updated for the sewing of the Multifiber and then reviewed for balloting. Proposed revision of AATCC Methods 15, 106 and 107 to include Multifiber #1 and #10 with minor editorial changes, will be submitted to committee letter ballot.

RA24, Fiber Analysis: Results of the 82 laboratory International Cotton/Rayon and
Angora Rabbit/Wool Proficiency Trial were reviewed and all labs participating were found
to be within about 3% of the average for the group for rayon/cotton and about 4% for
angora rabbit/wool. For angora/wool blends the tested values trended away from the
nominal value of the test specimens somewhat. The upcoming Proficiency Trial blend
was confirmed to be acetate/rayon. In furtherance of the efforts of the Spandex
Subcommittee successful ruggedness testing permitted the development of solvent
separation procedure 8 using Dimethylacetamide, which was incorporated in a
committee ballot along with some editorial and minor technical changes including an
update suggested by SGS in New Delhi.

RA38, Colorfastness to Crocking: A committee ballot for revision of TMs 8
(Colorfastness to Crocking: Crockmeter Method) and 116 (Colorfastness to Crocking:
Rotary Vertical Crockmeter Method) to remove instrumental grading note from the Notes
Section and add it to the Evaluation Section of the methods; to add to the Report Section
as well; and to include in the Notes Section an option to grade adjacent staining and
color change of the crocked specimen, was submitted. The ballot received two negatives
which were mainly to do with clarifying which electronic grading systems the notes refer
to and do these electronic grading systems have data to demonstrate that they provide
equal or better results than an experience grader. The committee decided to let the
negatives stand and to withdraw the ballot leaving the methods as is.

RA42, Dimensional Change: A recent committee ballot for proposed revisions of TM
150, Dimensional Changes of Garments after Home Laundering, to change the title and
scope to include home textile products, resulted in three comments with affirmative votes
which were considered valid comments. The comments were to make the title
“Dimensional Changes of Textile Products after Home Laundering,” instead of the one
balloted.
TM 179 (Skewness Change in Fabric and Garment Twist Resulting
from Automatic Home Laundering) needs a precision and bias statement and inclusion of
side seam twist option added.

International members suggest that with and without optical
brightener detergent should be referenced in RA42’s methods. A question from them
regarding standards for Dimensional Stability was referred to ASTM.

RA50, Colorfastness to Light: The final draft for revision of TM 16 (Colorfastness to
Light) was reviewed at the November meeting. The method is being revised for clarity.

The Blue Wool subcommittee is pursuing the possibility of inkjet printing to produce the full set of AATCC Blue wools.

RA60, Colorfastness to Washing: The proposed revision of TM 61 (Colorfastness to
Laundering: Accelerated),Option 1B, to use rubber balls as an alternative to stainless
steel balls, will move forward to a TCR ballot.

Proposed revisions to the Hand Laundering method will be e-mailed to members with comments
due to the chair by March 1.

Time and Place of next meeting The next series of committee meetings will be held
during the spring series of meetings on May 5-7, 2009 at the Radisson Hotel/AATCC Technical Center in Research Triangle Park, N. C.
Check our website in February at http://www.aatcc.org/testing/committees/index.htm for more details.

How to Participate: For information regarding these meetings and how to take part in
committee work, contact AATCC Membership Services, #6 North Main road, Annanagar West, Madras 600101. Tel +91 44 2615 1791, Fax +91 44 2615 1792,
E-mail assist@aatcc.org or assist2@aatcc.org