QSOP 0006-4100C - Crocking Test

QSOP 0006-4100 CPage 1 of 6PI CONFIDENTIAL - MATTEL, INC. PROPRIETARY INFORMATIONTITLE CROCKING TESTQUALITY AND SAFETY NUMBER 0006-4100 REVISION C DATE 07/25/07 OPERATING PROCEDUREAUTHOR D. Taylor REVISED BY B. Brockway 1. SCOPE1.1. Products and Components CoveredFabric items.1.2. ExemptionsYarnSimulated hairThread, string, rope and similar materialsSolid white fabric1.3. Definitions: (Words defined are italicized and bolded once per section)Crocking: Color transfer from fabric due to rubbingDesized : Fabric with sizing and other finishing chemicals removedFabric : All flat-surface and raised-fiber textile materials yarn, ribbons, thread, string,rope and other similar materials. Vinyl, urethane, or similar materials used as fabriccomponents, including fabric items backed by these materials.Simulated Hair : Monofilament fiber used to simulate hair, usually Kanekalon,modacrylic, saran, or nylon, and typically rooted or stitched to a pliable substrate.Warp : The series of yarns extended lengthwise in a loom. These yarns are crossed bythe “weft” yarns, also referred to as fabric grain.QSOP 0006-4100 CPage 2 of 6PI CONFIDENTIAL - MATTEL, INC. PROPRIETARY INFORMATION 2. PERFORMANCE REQUIREMENTS 2.1. PRODUCTS FOR CHILDREN UNDER 3 or with high expected abrasion, such aschildren’s clothing, infant bedding, guitar straps, or diaper bags:Average CrockingScoreEvaluation for Dry Crocking Evaluation for Wet Crocking 4 - 5Accept Accept 3 Reject Accept 0 - 2.5Reject Reject 2.2. PRODUCTS FOR CHILDREN 3 OR OLDER:Average CrockingScoreEvaluation for Dry Crocking Evaluation for Wet Crocking 4 - 5Accept Not Applicable 3 - 3.5Perform wet crocking Accept 1.5 - 2.5Reject Accept 0 - 1 Reject Reject2.3. PRODUCTS FOR USE IN WATER:Average CrockingScoreEvaluation for Wet Crocking 4 - 5Accept 0 - 3.5 Reject3. TEST METHODS3.1. Test EnvironmentIlluminate the test surface with 538 lux (50 foot candles) or more. The light should hitthe surfaces at approximately 45° and the viewing direction approximately perpendicularto the surfaces.3.2. Equipment3.2.1. American Association of Textile Chemists and Colorists (AATCC) CROCKMETER, Model CM-1.13.2.2. Crock meter Test Cloth, cut 5 cm2. square (2 in2), desized, bleached and with nooptical brightener or finishing material.23.2.3. Evaluation easel, approx. 24 x 19 cm (.5 x 7.5 in) smooth, angled plywoodattached to a same size base.3.2.4. Any white evaluation cloth.3.2.5. AATCC Chromatic Transference Scale.33.2.6. Distilled or deionized water.3.3. General Test Requirements3.3.1. Crock five samples per test and average the score for each 5-sample test.3.4. Procedure3.4.1. PRODUCTS FOR CHILDREN UNDER 3 or with high expected abrasion, such aschildren’s clothing, infant bedding, or diaper bags.3.4.1.1. Perform both dry and wet crocking test and evaluate per §2.1 table.3.4.2. PRODUCTS FOR CHILDREN 3 OR OLDER3.4.2.1. Perform dry crocking test and evaluate per §2.2 table. Products thathave an average crocking score of 3 - 3.5 proceed with wet crockingtest.3.4.3. PRODUCTS FOR USE IN WATER:3.4.3.1. Perform wet crocking test and evaluate per §2.3 table.3.4.4. Dry Crocking Test3.4.4.1. Cut fabric samples to minimum size 51 x 127 mm. (2 x 5 in). Wheneverpossible; cut the long dimension of the sample crosswise (neitherparallel nor perpendicular to the grain) to the fabric grain (warp).Include the maximum number of colors, as is possible, in each sample1 Available from Atlas Electric Devices Co. 4114 North Ravenswood Avenue, Chicago, Illinois 60613, (312) 327-4520.2 Available from TestFabrics, Inc., P.O. Box 420, Middlesex, New Jersey 08846.3 Available from American Association of Textile Chemists and Colorists, P.O. Box 12215, Research Triangle Park, North Carolina 27709. QSOP 0006-4100 C Page 3 of 6PI CONFIDENTIAL - MATTEL, INC. PROPRIETARY INFORMATION3.4.4.2. For fabrics <2 in. wide, e.g. webbing, ribbons, and straps, may be laidside by side tested the width is ≥ the width of the finger dowel.Note: for fabric, webbing, printed labels and straps from which a 2x5 in.sample cannot be extracted, the uncut material shall be tested.3.4.4.3. Place test fabric with the colored surface facing up on the crock meter,flat on the sandpaper with its long dimension in the direction of rubbing.3.4.4.3.1. Perform crocking test on both sides of a fabric when both areprinted with color, but are not the same.3.4.4.4. Place holder over specimen to prevent slipping.3.4.4.5. Mount crock meter test cloth, threads parallel to the direction of rubbing,over the end of the finger projecting downward from the weighted slidingarm. Hold the test square in place with spiral wire clip. Position the clipwith loops upward (if the loops point downward they can drag againstthe test specimen).3.4.4.6. Lower the finger onto the test specimen. Crank the meter handle 10complete turns at one turn per second to slide the finger back and forth20 times. Be sure the finger does not contact the specimen holder.Adjust as necessary.3.4.4.7. Remove the crock meter test cloth square and evaluate. .Fabricspecimens, e.g. napped or brushed, may deposit loose fibers onto thetest fabric during the crocking process. Gently press cellophane tapeagainst the white test fabric to remove loose fibers before evaluating thecircular stain.3.4.5. Wet Crocking Test3.4.5.1. Thoroughly wet crock meter test cloth in distilled or deionized waterimmediately before performing the test. Prepare only one square at atime.3.4.5.2. Blot between two white paper towels to remove excess water.3.4.5.3. Perform test per Dry Crocking (§ 3.4.1).3.4.5.4. Remove the crock meter test cloth and air dry before evaluating..Fabric specimens, e.g. napped or brushed, may deposit loose fibersonto the test fabric during the crocking process. Gently presscellophane tape against the white test fabric to remove loose fibersbefore evaluating the circular stain.3.4.6. Crocking Samples Evaluation3.4.6.1. Evaluate color transfer per the AATCC Chromatic Transference Scale.QSOP 0006-4100 C Page 4 of 6PI CONFIDENTIAL - MATTEL, INC. PROPRIETARY INFORMATIONQSOP 0006-4100 CPage 5 of 6PI CONFIDENTIAL - MATTEL, INC. PROPRIETARY INFORMATION 3.4.6.2. Back the test squares with three layers of white test cloth whileevaluating.3.4.6.3. Rating dry and wet crocking fastness: 3.4.6.4. Place the material behind the scale. The colored portion (the colortransferred from the test fabric to the crock meter test cloth) must bevisible through one of the circular holes in the vertical column closest toit in shade. Move material up or down so that, if possible, it is betweenthe two closest shades.3.4.6.5. Determine ratings by comparing the numbered rows on the chart,interpolating when the sample color depth is between two rows. Choosethe shade that approximates the color transfer on the test fabrics."Grade 5" indicates the least color transfer and "Grade 1" the greatestcolor transfer.3.4.6.6. Average the results and round to the nearest 0.5.4. HISTORY4.1. SignificanceTo minimize fabric color transfer to the child’s mouth, mucous membranes or skin, or to other toy parts, clothing or furniture.This test method is familiar to fabric vendors as it is a standard in the textile industry. The evaluation criteria have been set for Mattel products based on complaints and problems encountered with color transfer. Although yarn, simulated hair , thread, string, and other similar materials are exempted, the AATCC method does evaluate these items if required.4.2. Reason for RevisionSection Revision CImplementation Date: All Reviewed and affirmed. Converted to SI editorial3.4.4.7 & 3.4.5.4 Rewritten to clarify that the procedure to removeexcess fibers prior to evaluation pertains to thewhite test cloth after the crocking process. Itdoes not apply to the test specimen (product).editorialQSOP 0006-4100 CPage 6 of 6PI CONFIDENTIAL - MATTEL, INC. PROPRIETARY INFORMATIONSection Revision B Implementation Date:3.4.1, 3.4.2 & 3.4.3 Clarifies when dry crocking and wet crocking tests are required based upon productcategory.Immediate3.4.4.1 Add a statement for fabric, webbing, printed labels and straps from which a 2x5 inchsample cannot be extracted, the uncut materialshall be tested.3.4.4.2 Clarifies that crocking test is required on both sides of a fabric whose sides are not identical.4.3. Referenced DocumentsAATCC Test Method 8-2001 Colorfastness to Crocking: AATCC Crock meter Method (found in any AATCC Technical Manual published 1989 and forward).。