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LENPUR COMPARED WITH OTHER CELLULOSE FIBRES: VISCOSE, MODAL AND LYOCELL Test Nr. 738 dated 02/07/2002 MICROPHOTOGRAPHS OF FIBRES USING AN OPTICALMICROSCOPE: LONGITUDINAL VIEW Product: samples of yarn and fibre Re: Your letter dated 02/05/2002 delivered 02/05/2002 verbal agreement Test Requested: various tests Protocol:535/655
• MICROPHOTOGRAPHS OF FIBRES USING AN OPTICALMICROSCOPE: LONGITUDINAL VIEW
IDENTIFICATION OF SAMPLES 4 fibre samples: shiny Viscose 100% Nr. 5 classic Lyocell Nr.20 shiny classic Modal Nr.26 Lenpur 100% Nr. 8 EQUIPMENT USED Leica DM LP optical microscope Image analysis NORM USED Internal RESULTS Photograph N°1: shiny Viscose 100%, iodosulphuric reagent, transmitted light, 500 x Photograph N°1A: shiny Viscose 100%, iodosulphuric reagent, polarised light, 500 x Photograph N°2: shiny Viscose 100%, iodosulphuric reagent, transmitted light, 500 x Photograph N°2A: shiny Viscose 100%, iodosulphuric reagent, polarised light, 500 x Photograph N°3: classic Lyocell, iodosulphuric reagent, transmitted light, 500 x Photograph N°3A: classic Lyocell, iodosulphuric reagent, polarised light, 500 x Photograph N°4: classic Lyocell, iodosulphuric reagent, transmitted light, 500 x Photograph N°4A: classic Lyocell, iodosulphuric reagent, polarised light, 500 x Photograph N°5: shiny classic Modal, iodosulphuric reagent, transmitted light, 500 x Photograph N°5A: shiny classic Modal, iodosulphuric reagent, polarised light, 500 x Photograph N°6: shiny classic Modal, iodosulphuric reagent, transmitted light, 500 x Photograph N°6A: shiny classic Modal, iodosulphuric reagent, polarised light, 500 x Photograph N°7: Lenpur 100%, iodosulphuric reagent, transmitted light, 500 x Photograph N°7A: Lenpur 100%, iodosulphuric reagent, polarised light, 500 x Photograph N°8: Lenpur 100%, iodosulphuric reagent, transmitted light, 500 x Photograph N°8A: Lenpur 100%, iodosulphuric reagent, polarised light, 500 x NOTES Photographs enclosed Test date end 01/07/2002
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MICROPHOTOGRAFY OF FIBRES USING OPTICAL MICROSCOPE: SECTION COUNT OF SYNTHETIC AND ARTIFICIAL FIBRES
• MICROPHOTOGRAPHY OF FIBRES USING OPTICAL MICROSCOPE: SECTION IDENTIFICATION OF SAMPLES As above EQUIPMENT USED Leica DM LP optical microscope Microtron NORM USED Internal RESULTS Photograph N°9: shiny Viscose 100%, transmitted light, 1000 x Photograph N°9A: shiny Viscose 100%, transmitted light, 1000 x, after dyeing with reactive dyes Photographs N°9B: shiny Viscose 100%, transmitted light, 1000 x, after dyeing with direct dyes Photographs N°10: classic Lyocell, transmitted light, 1000 x Photographs N°10A: classic Lyocell, transmitted light, 1000 x, after dyeing with reactive dyes Photographs N°10B: classic Lyocell, transmitted light, 1000 x, after dyeing with direct dyes Photographs N°11: shiny classic Modal, transmitted light, 1000 x Photographs N°11A: shiny classic Modal, transmitted light, 1000 x, after dyeing with reactive dyes Photographs N° 11B: shiny classic Modal, transmitted light, 1000 x, after dyeing with direct dyes Photographs N°12: Lenpur 100%, transmitted light, 1000 x Photographs N°12A: Lenpur 100%, transmitted light, 1000 x, after dyeing with reactive dyes Photographs N°12B: Lenpur 100%, transmitted light, 1000 x, after dyeing with direct dyes NOTES Photographs enclosed Test date end 01/07/2002
• COUNT OF SYNTHETIC AND ARTIFICIAL FIBRES IDENTIFICATION OF SAMPLES As above NORM USED UNI EN ISO 1973 ENVIRONMENTAL CONDITIONS Temperature 20° C- relative humidity 65% RESULTS Mean fibre count [dTex] shiny Viscose 100% N°5 : 1,4 classic Lyocell N°20 : 1,4 shiny classic Modal N°26 : 1,4 Lenpur 100% N°8 : 1,6 NOTES
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Test date end 01/07/2002 DETERMINATION OF FORCE AND BREAK EXTENSION ON A SINGLE FIBRE
• DETERMINATION OF FORCE AND BREAK EXTENSION ON A SINGLE FIBRE IDENTIFICATION OF SAMPLES As above NORM USED UNI EN ISO 5079 TESTING PARAMETERS Test time : 10 mm Test speed : 10 mm/minute The wet tests were performed on fibres previously immersed in water as in the norm but not kept in immersion during the test. ENVIRONMENTAL CONDITIONS Temperature 20° C- relative humidity 65% RESULTS shiny Viscose 100% N°5 Test on conditioned fibre Wet test Breaking force [cN] : 2,95 2,55 Extension at break % : 16,86 10,49 CV force % : 16,45 22,22 CV elongation % : 22,46 22,18 Tenacity [cN/dTex] : 2,11 1,82 classic Lyocell N°20 Test on conditioned fibre Wet test Breaking force [cN] : 5,22 5,44 Extension at break % : 15,79 19,29 CV force % : 18,93 11,41 CV elongation % : 25,18 18,67 Tenacity [cN/dTex] : 3,73 3,89 shiny classic Modal N°26 Test on conditioned fibre Wet test Breaking force [cN] : 4,25 3,57 Extension at break % : 13,23 7,42 CV force % : 8,45 34,42 CV elongation % : 12,88 30,05 Tenacity [cN/dTex] : 3,03 2,55 Lenpur 100% N°8 Test on conditioned fibre Wet test Breaking force [cN] : 3,27 2,69 Extension at break % : 20,46 11,62 CV force % : 22,91 24,92 CV elongation % : 28,50 30,39 Tenacity [cN/dTex] : 2,05 1,68 NOTES Printed enclosure
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Test date end 01/07/2002 FRICTION ON COEFFICIENT ON YARN DETERMINATION OF TENSILE YARN
• FRICTION COEFFICIENT ON YARN IDENTIFICATION OF SAMPLES N°4 samples of yarn Ne 40 EQUIPMENT USED Rothschild - F - meter NORM USED Internal TESTING PARAMETRS
ENVIRONMENTAL CONDITIONS Temperature 20° C- relative humidity 65% RESULTS T2 (g) T1(g) f Shiny Viscose yarn 20 72 0.41 Lyocell yarn 20 51 0.30 Modal yarn 20 51 0.30 Lenpur yarn 20 50 0.29 NOTES T2: entrance strain T1: exit strain f : friction coefficient Diagram enclosed Test date end 01/07/2002
• DETERMINATION OF TENSILE YARN IDENTIFICATION OF SAMPLES As above NORM USED Internal L.F. 3 ENVIRONMENTAL CONDITIONS Temperature 20° C- relative humidity 65% RESULTS Length variation % Material as is Shiny Viscose yarn - 1,8
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Lyocell yarn - 0,6 Modal yarn - 0,8 DETERMINATION OF TENSILE YARN DYEING TESTS Lenpur yarn - 3,0 Material dyed with direct dyes Shiny Viscose yarn - 0,4 Lyocell yarn - 0,1 Modal yarn - 0,2 Lenpur yarn - 0,2 Material dyed with reactive dyes Shiny Viscose yarn - 0,7 Lyocell yarn - 0,5 Modal yarn - 0,4 Lenpur yarn - 0,7 NOTES Test date end 07/06/2002
• DYEING TESTS IDENTIFICATION OF SAMPLES As above RESULTS SCOURING: The samples were scoured in an aqueous bath at a temperature of 55°C with 1g/l of non ionic ethoxylated surfactant in a slightly alkaline medium due to the presence of sodium bicarbonate. DYEING: a) dyeing with direct dyes: 3% dye, 10% sodium sulphate, 5% sodium carbonate, bath ratio 1:30. 30 minutes at 98° C, remains in bath for 15 minutes before cooling and rinsing. b) dyeing with reactive dyes: 3% dye, 10% sodium sulphate, 1% sodium carbonate, bath ratio 1:30. 30 minutes at 98° C, remains in bath for 15 minutes before cooling, washing with non ionic surfactants, rinse. NOTES Test date end 02/07/2002 Enclosed to test N° 738
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TEST 738 ENCLOSED N. 1 UNI EN ISO 5079 (10 mm) Determination of force and break extension on a single fibre Test type: yarn/fibre Instron Corporation Operator: bsm Series IX Automated Materials Testing System 8.12.00 Identification lot: 655 lenpur Data test: Monday, 3rd June 2002 Interface: 5500 Sample speed (pt/s): 50.0000 Throughput speed: 10.0000 mm/min Humidity (%): 65 Second speed: 0.0000 mm/min Temperature: 20 C Third speed: 0.0000 mm/min Campo car. f scala: 0.0100 kN SAMPLE Lenpur (wet) Lot comments: Breaking Load
Minimum 1.38 5.90 0.865 45.376 Maximum 4.05 21.77 2.533 202.596
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TEST 738 ENCLOSED N. 2 UNI EN ISO 5079 (10 mm) Determination of force and break extension on a single fibre Test type: yarn/fibre Instron Corporation Operator: bsm Series IX Automated Materials Testing System 8.12.00 Identification lot: 655 lenpur Data test: Wednesday, 29th May 2002 Interface: 5500 Sample speed (pt/s): 50.0000 Throughput speed: 10.0000 mm/min Humidity (%): 65 Second speed: 0.0000 mm/min Temperature: 20 C Third speed: 0.0000 mm/min Campo car. f scala: 0.0100 kN SAMPLE Lenpur 100% Lot comments: Breaking Load
Minimum 1.36 10.33 0.850 31.544 Maximum 5.13 32.87 3.206 218.384
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TEST 738 ENCLOSED N. 3 UNI EN ISO 5079 (10 mm) Determination of force and break extension on a single fibre Test type: yarn/fibre Instron Corporation Operator: bsm Series IX Automated Materials Testing System 8.12.00 Identification lot: 655 mshiny Data test: Friday, 31st May 2002 Interface: 5500 Sample speed (pt/s): 50.0000 Throughput speed: 10.0000 mm/min Humidity (%): 65 Second speed: 0.0000 mm/min Temperature: 20 C Third speed: 0.0000 mm/min Campo car. f scala: 0.0100 kN SAMPLE classic Modal shiny (wet) Lot comments: Breaking Load
Minimum 1.72 2.97 1.229 53.425 Maximum 8.14 13.07 5.813 239.451
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TEST 738 ENCLOSED N. 4 UNI EN ISO 5079 (10 mm) Determination of force and break extension on a single fibre Test type: yarn/fibre Instron Corporation Operator: bsm Series IX Automated Materials Testing System 8.12.00 Identification lot: 655 MC Data test: Monday, 27th May 2002 Interface: 5500 Sample speed (pt/s): 50.0000 Throughput speed: 10.0000 mm/min Humidity (%): 65 Second speed: 0.0000 mm/min Temperature: 20 C Third speed: 0.0000 mm/min Campo car. f scala: 0.0100 kN SAMPLE classic Modal shiny Lot comments: Breaking Load
Minimum 3.28 8.23 2.342 52.948 Maximum 5.37 16.03 3.834 268.850
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TEST 738 ENCLOSED N. 5 UNI EN ISO 5079 (10 mm) Determination of force and break extension on a single fibre Test type: yarn/fibre Instron Corporation Operator: bsm Series IX Automated Materials Testing System 8.12.00 Identification lot: 655 vsw Data test: Thursday, 30th May 2002 Interface: 5500 Sample speed (pt/s): 50.0000 Throughput speed: 10.0000 mm/min Humidity (%): 65 Second speed: 0.0000 mm/min Temperature: 20 C Third speed: 0.0000 mm/min Campo car. f scala: 0.0100 kN SAMPLE Viscose shiny (wet) Lot comments: Breaking Load
Minimum 1.14 6.43 0.812 44.844 Maximum 4.41 15.17 3.153 234.265
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TEST 738 ENCLOSED N. 6 UNI EN ISO 5079 (10 mm) Determination of force and break extension on a single fibre Test type: yarn/fibre Instron Corporation Operator: bsm Series IX Automated Materials Testing System 8.12.00 Identification lot: 655 Ls Data test: Tuesday, 28th May 2002 Interface: 5500 Sample speed (pt/s): 50.0000 Throughput speed: 10.0000 mm/min Humidity (%): 65 Second speed: 0.0000 mm/min Temperature: 20 C Third speed: 0.0000 mm/min Campo car. f scala: 0.0100 kN SAMPLE classic Lyocell shiny Lot comments: Breaking Load
Minimum 0.17 0.05 0.124 53.032 Maximum 6.85 22.67 4.892 277.552
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TEST 738 ENCLOSED N. 7 UNI EN ISO 5079 (10 mm) Determination of force and break extension on a single fibre Test type: yarn/fibre Instron Corporation Operator: bsm Series IX Automated Materials Testing System 8.12.00 Identification lot: 655 Ls Data test: Monday, 3rd June 2002 Interface: 5500 Sample speed (pt/s): 50.0000 Throughput speed: 10.0000 mm/min Humidity (%): 65 Second speed: 0.0000 mm/min Temperature: 20 C Third speed: 0.0000 mm/min Campo car. f scala: 0.0100 kN SAMPLE Lyocell shiny (wet) Lot comments: Breaking Load
Minimum 4.31 11.27 3.077 57.338 Maximum 6.69 28.53 4.782 246.210
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TEST 738 ENCLOSED N. 8 UNI EN ISO 5079 (10 mm) Determination of force and break extension on a single fibre Test type: yarn/fibre Instron Corporation Operator: bsm Series IX Automated Materials Testing System 8.12.00 Identification lot: 655 Vs Data test: Monday, 27th May 2002 Interface: 5500 Sample speed (pt/s): 50.0000 Throughput speed: 10.0000 mm/min Humidity (%): 65 Second speed: 0.0000 mm/min Temperature: 20 C Third speed: 0.0000 mm/min Campo car. f scala: 0.0100 kN SAMPLE Viscose shiny 100% Lot comments: Breaking Load
Minimum 1.89 9.54 1.350 33.715 Maximum 3.99 23.63 2.851 224.587
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LENPUR COMPARED WITH OTHER CELLULOSE FIBRES: VISCOSE, MODAL AND LYOCELL Test Nr. 919 dated 06/09/2002 DETERMINATION OF PILLING RESISTANCE IN ICI FABRICS Product: samples of yarn and fibre Re: Your letter dated 28/06/2002 which we received 01/07/2002 plus telephone agreements 16/07-04/09/2002 Test Requested: various tests Protocol: 696/801
• DETERMINATION OF PILLING RESISTANCE IN ICI FABRICS SAMPLE IDENTIFICATION 4 Fabrics: Lenpur – Viscose - Modal - Lyocell EQUIPMENT USED Pill Testing Box NORM USED BS 5811 TESTING PARAMETERS Test time: 2 hours ( equal to 7200 revolutions) and 4 hours ( equal to 14,400 revolutions) ENVIRONMENTAL CONDITIONS Temperature 20 °C Relative Humidity 65% SAMPLE RESULTS : Lenpur Viscose Modal Lyocell Test Time : 2 h 4 h 2 h 4 h 2 h 4 h 2 h 4 h Level of pilling : 3 2 3 2-3 2-3 2 3 2-3 NOTES Tests performed on material as it arrived Level 1: maximum pill formation Level 5: no pills Samples enclosed. Date of end of test: 08/08/2002
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DIMENSIONAL STABILITY TO DOMESTIC WASHING (UNI EN) MEASUREMENT OF RESISTANCE TO AUUEOUS STEAM
• DIMENSIONAL STABILITY TO DOMESTIC WASHING (UNI EN) SAMPLE IDENTIFICATION As above NORM APPLIED UNI EN 25077- Uni EN 26330 EQUIPMENT USED Wascator FOM 71 MP- Lab washing machine TEST PARAMETERS Wash cycle 7A: - 1 Drying: Type C Detergent: ECE ENVIRONMENTAL CONDITIONS Temp. 20°C Relative humidity 65% RESULTS
Percentage variation in dimensions LENPUR VISCOSE MODAL LYOCELL Width + 0.7 +14.4 +4.8 / Length -21.5 -31.4 -20.5 -16.1 NOTES Date of end of test: 08/08/2002
• MEASUREMENT OF RESISTANCE TO AQUEOUS STEAM IDENTIFICATION OF SAMPLE As above EQUIPMENT USED Sweating guarded hotplate m259b NORM APPLIED ISO 11092 TEST PARAMETERS Air speed = 1m/s Plate temperature = 35°C ENVIRONMENTAL CONDITIONS Air temperature = 35 °C Relative humidity = 40% RESULTS Samples: LENPUR LYOCELL MODAL VISCOSE Ret [m² Pa/W] 7.27 4.25 5.25 4.16 Arithmetical average of three tests NOTES
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End test date 31/07/2002 MEASUREMENT OF THERMAL RESISTANCE
• MEASUREMENT OF THERMAL RESISTANCE SAMPLE IDENTIFICATION As above EQUIPMENT USED Sweating guarded hotplate m259b NORM APPLIED ISO 11092 TEST PARAMETERS Speed of air = 1m/s Plate temperature = 35°C ENVIRONMENTAL CONDITIONS Air temperature = 20 °C Relative humidity = 65% RESULTS Samples: LENPUR LYOCELL MODAL VISCOSE Ret [m² Pa/W] 0.004 0.009 0.004 0.015 Arithmetical average of three tests NOTES End test date 31/07/2002
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LENPUR COMPARED WITH OTHER CELLULOSE FIBRES: VISCOSE, MODAL AND LYOCELL Test Nr. 920 dated 06/09/2002 CALCULATION OF LOSS OF MASS AND OF CORRECTIVE FACTOR DIFFERENTIATION OF LENPUR AND VISCOSE FIBRE THROUGH DYEING REACTION Product: samples of fibre Re: Your reference dated 09/07/2002 Test Requested: various tests Protocol: 729/825
• VARIOUS TESTS SAMPLE IDENTIFICATION Samples of fibre NORM USED Law 26th November 1973 – N° 883 “Rule of denomination and labelling of textile products” RESULTS Calculation of loss of mass and of corrective factor in the principal reactants used in the blending of textile fibres Sodium hypochlorite Loss % Corrective factor Classic Modal shiny 0.26 1.003 Classic Viscose 1.02 1.019 Classic Lyocell 1.14 1.135 Lenpur 0.93 1.009 Formic Acid Loss % Corrective factor Classic Modal shiny 0.69 1.007 Classic Viscose / 1.0 Classic Lyocell / 1.0 Lenpur 0.83 1.008 Dimethylformamide Loss % Corrective factor Classic Modal shiny 0.59 1.006 Classic Viscose 0.71 1.007 Classic Lyocell 0.53 1.005 Lenpur 0.51 1.005 Xylene Loss % Corrective factor Classic Modal shiny / 1.0 Classic Viscose / 1.0 Classic Lyocell / 1.0 Lenpur / 1.0 Differentiation of LENPUR and VISCOSE fibre through dyeing reaction (staining test) The two fibres were treated with a dye mixture SHIRLASTAIN A following to the standard use conditions advised by the producer. The results show that the two fibres are not distinguished in a particular way. NOTES Enclosed samples of dyed fibres. Data end test 22/08/2002
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LENPUR COMPARED WITH OTHER CELLULOSE FIBRES: VISCOSE, MODAL AND LYOCELL Test Nr. 1217 dated 05/12/2002 QUALITATIVE ANALYSIS Product: 10 samples of cellulose fibre Re: Your letter date 25/10/2002 delivered 25/10/2002 Test Requested: Qualitative analysis Protocol: 1157/1254
• QUALITATIVE ANALYSIS SAMPLE IDENTIFICATION 10 samples of cellulose fibre NOTES ON SAMPLES The samples arrived in signed and sealed envelopes numbered from 1 to 10 EQUIPMENT USED Axioskop Zeiss optical microscope for use with transmitted light NORM APPLIED The methods of analysis were agreed in advance with the client and verified on known samples of lenpur and viscose. The samples were prepared on a slide base, imbibed in an iodic reagent, dried, then imbibed in a sulphuric reagent, covered with the slide cover The analysis was performed at 200x using a polarising lens. Two test tubes were analysed for each sample taken from different zones of the sample mass. The Lenpur fibres were distinguished from the viscose by means of the analysis of the longitudinal section, and, in particular, observing the presence (Lenpur) or absence ( viscose) of changes of orientation along the axis of the above cited reagent in the presence of polarised light. RESULTS The samples examined were classified as follows: n°1 = viscose n°2 = viscose n°3 = viscose n°4 = viscose n°5 = viscose n°6 = Lenpur n°7 = Lenpur n°8 = Lenpur n°9 = Lenpur n°10 = Lenpur NOTES Test date end 4/12/2002
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LENPUR COMPARED WITH OTHER CELLULOSE FIBRES: VISCOSE, MODAL AND LYOCELL Test Nr. 281 dated 02/04/2003 DETERMINATION OF ASH CONTENT
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LENPUR COMPARED WITH OTHER CELLULOSE FIBRES: VISCOSE, MODAL AND LYOCELL TEST ABOUT THE HUMIDITY RECOVERY