Crease Recovery Tester
Crease recovery tester is used to assess the amount of recovery of fabric from creasing the result is generally expressed as the crease recovery angle. Made of heavy caste base with all parts of main steel Imported Acrylic Sheet used to make the Rotate Dial. To make the movement smooth the Dial moves in a fabric brass bush. The same base has both the stainless Steel Creasing Load and two Round Steel Plates for pressing the specimen. s ize of the Test Specimen: 40mm x 15mm. Creasing Load: 1 Kg. (Stainless Steel) Angle Measurement: On an Engraved Circular Scale graduated in 1 deg. Scale Measurement: 0-180 Degrees . Weight: 9 Kg
Crease Recovery Tester Specification
- Machine name: Crease recovery tester.
- Machine origin: England
- Brand name: James H. Heal & Co. Ltd
- Machine name: Fabric stiffness tester.
Durability of printed fabrics
Scope:This in house test method describes the method of test in order to determine the long term durability and appearance of printed fabrics in respect of colour/appearance retention.
Principle: The correct number of test specimens are to be prepared and tested as specified within this test method in order to achieve a performance assessment of the product/fabric as described within the scope.
Equipment: Wascator washing machine fom71.mp-lab.
Polyester make-weights.
Drying racks
Preparation of test specimens/materials
- fabric – ensure that all colours within the print are represented within the specimen chosen.
- all raw edges must be overlocked to prevent fraying prior to testing.
- reference sample – an example containing all colours must be retained as a reference point for grading.
Test procedure
- weigh the test specimen and make up to 2kg wash load using make-weights for printed fabrics.
- select wascator programme at the temperature indicated for the test (either by written instruction or as per the care label).
- place the load in the machine.
- add 25gm persil heavy duty powder.
- switch on machine.
- Assessment/results of tested specimens
- examine the specimens whilst still damp and note any significant changes in appearance.
- place the specimens on drying racks and allow to dry.
- Reporting of results
- Assess any appearance change (see ihtm 007) and shade change of the printed areas when dry and record as required by the performance requirements.
Some Test Methods
- Fibre Identification
- Fibre Composition
- Tensile Strength
- Tear Strength
- Seam Slippage
- Seam Strength
- Bursting Strength
- Abrasion Resistance
- Pilling Resistance
- Snagging Resistance
- Crease Recovery
- Dimensional Stability to Washing
- Dimensional Stability to Dry Cleaning
- WIRA Free Steam
- Resistance to Corrosion of Metal Parts
- Spirality
- Water Repellency (Bundesmann)
- Hydrostatic Head
- Colour Fastness
- Print/Flock Durability
- Accelerator Pile Loss
GENERAL NOTES
- Units are metric or SI throughout.
- Warp and Weft, denote the length and width of a woven fabric.
- Wales and Courses denote the length and width of a knitted fabric.
- The area adjacent to the selvedges should be avoided as being not representative of
the fabric.
- The normal conditions for testing textiles are, 20oC +/-2oC and 65% +/-4% RH.
- Excessive handling of specimens should be avoided.
- Where production seams are available, these should be tested in addition to laboratory
seams.
- This performance standard indicates commercial dry cleaning, i.e. solvent plus water and
detergent.
- The effect of IEC detergent on white and pale coloured cellulose fabrics should be reported.
- Abbreviations: – cc. Colour Change
– s. Staining
– BWS. Blue Wool Standards
- Compliance with this specification does not confer immunity from prosecution but may
help to demonstrate ‘due diligence’.
The classification “Corporate Wear” can include career wear and uniforms, the
following specifications are intended as a guide only and care must be taken when very
specific end uses and specialist properties are required.
Attention is drawn to European Legislation and CE marking requirements for
Protective Clothing.
SHIRTS/BLOUSES
| METHOD REQUIREMENT |
| Fibre Composition Label +/-3% |
| Tensile Strength 180 N (Warp/Weft) |
| Tear Strength 1000 cN (Warp/Weft) |
| Bursting Strength 400 kPa |
| Seam Slippage (6mm opening) 100 N (Warp/Weft) |
| Seam Strength 120 N (Warp/Weft) |
| Abrasion Resistance 25,000 revs |
| Colour Change at 5,000 revs Grade 4 |
| Colour Change at 10,000 revs Grade 4 |
| Resistance to Pilling |
| After 2,000 revs Grade 4 |
| Resistance to Snagging |
| After 600 revs Grade 3-4 |
| Crease Recovery Angle |
| Face to Face 120o (Warp/Weft) |
| Back to Back 120o (Warp/Weft) |
| Dimensional Stability to:- |
| Washing +/-3% (Length/Width) |
| Appearance after Washing Must give a satisfactory |
| appearance. |
| Dry Cleaning +/-3% (Length/Width) |
| Appearance after Dry Cleaning Must give a satisfactory |
| appearance. |
| WIRA Free Steam (after minimum 4 hours relaxation) +/-2% (Length/Width) |
SHIRTS/BLOUSES (Cont’d)
| METHOD REQUIREMENT |
| Colour Fastness to:- |
| Washing cc. 4 s. 4 |
| Water cc. 4 s. 4 |
| Dry Cleaning cc. 4 s. 4 |
| Perspiration cc. 4 s. 4 |
| Rubbing Dry 4 Wet 3-4 |
| Light BWS 4 |
| Durability Wash (15 minutes) cc. 4 |
| (as per Care Label) |
| Contrast Trims cc. 4-5 |
DRESS/SKIRTS
| METHOD REQUIREMENT |
| Fibre Composition Label +/-3% |
| Tensile Strength 200 N (Warp/Weft) |
| Tear Strength 1600 cN (Warp/Weft) |
| Bursting Strength 400 kPa |
| Seam Slippage (6mm opening) |
| Fitted Garment 120 N (Warp/Weft) |
| Loose Garment 100 N (Warp/Weft) |
| Seam Strength 160 N (Warp/Weft) |
| Abrasion Resistance 25,000 revs |
| Colour Change at 5,000 revs Grade 4 |
| Colour Change at 10,000 revs Grade 3-4 |
| Resistance to Pilling |
| After 18,000 revs Grade 4 |
| After 36,000 revs Grade 4 |
| Resistance to Snagging |
| After 600 revs Grade 3-4 |
| Crease Recovery Angle |
| Face to Face 110o (Warp/Weft) |
| Back to Back 110o (Warp/Weft) |
| Dimensional Stability to:- |
| Washing +/-3% (Length/Width) |
| Appearance after Washing Must give a satisfactory |
| appearance. |
| Dry Cleaning +/-3% (Length/Width) |
| Appearance after Dry Cleaning Must give a satisfactory |
| appearance. |
DRESS/SKIRTS1
| METHOD REQUIREMENT |
| WIRA Free Steam (after minimum 4 hours relaxation) +/-2% (Length/Width) |
| Colour Fastness to:- |
| Washing cc. 4 s. 4 |
| Water cc. 4 s. 4 |
| Dry Cleaning cc. 4 |
| Perspiration cc. 4 s. 4 |
| Rubbing Dry 4 Wet 3-4 |
| Light BWS 4 |
| Durability Wash (15 minutes) cc. 4 |
| (as per Care Label) |
| Contrast Trims cc. 4-5 |
TROUSERS/JACKETS
| METHOD REQUIREMENT |
| Fibre Composition Label +/-3% |
| Tensile Strength 250 N (Warp/Weft) |
| Tear Strength 1600 cN (Warp/Weft) |
| Bursting Strength 400 kPa |
| Seam Slippage (6mm opening) 120 N (Warp/Weft) |
| Seam Strength 120 N (Warp/Weft) |
| Abrasion Resistance 30,000 revs |
| Colour Change at 5,000 revs Grade 4 |
| Colour Change at 10,000 revs Grade 3-4 |
| Resistance to Pilling |
| After 2,000 revs Grade 4 |
| Resistance to Snagging |
| After 600 revs Grade 3-4 |
| Crease Recovery Angle |
| Face to Face 110o (Warp/Weft) |
| Back to Back 110o (Warp/Weft) |
| Dimensional Stability to:- |
| Washing +/-3% (Length/Width) |
| Appearance after Washing Must give a satisfactory |
| appearance. |
TROUSERS/JACKETS 1
| METHOD REQUIREMENT |
| Dry Cleaning +/-3% (Length/Width) |
| Appearance after Dry Cleaning Must give a satisfactory |
| appearance. |
| WIRA Free Steam (after minimum 4 hours relaxation) +/-2% (Length/Width) |
| Colour Fastness to:- |
| Washing cc. 4 s. 4 |
| Water cc. 4 s. 4 |
| Dry Cleaning cc. 4 |
| Perspiration cc. 4 s. 4 |
| Rubbing Dry 4 Wet 3-4 |
| Light BWS 4 |
| Durability Wash (15 minutes) cc. 4 |
| (as per Care Label) |
| Contrast Trims cc. 4-5 |
TIES/SCARVES
| METHOD REQUIREMENT |
| Fibre Composition Label +/-3% |
| Dimensional Stability to:- |
| Dry Cleaning +/-5% (Length/Width) |
| Appearance after Dry Cleaning Must give a satisfactory |
| appearance. |
| Hand Washing +/-5% (Length/Width) |
| Appearance after Hand Washing Must give a satisfactory |
| appearance. |
| Colour Fastness to:- |
| Washing cc. 4 s. 4 |
| Water cc. 4 s. 4 |
| Dry Cleaning cc. 4 |
| Perspiration cc. 4 s. 4 |
| Rubbing Dry 4 Wet 3-4 |
| Light BWS 4 |
| Durability Wash (15 minutes) cc. 4 |
| (as per Care Label) |
| Contrast Trims cc. 4-5 |
T-SHITS/POLO SHIRTS
| METHOD REQUIREMENT |
| Fibre Composition Label +/-3% |
| Bursting Strength 450 kPa |
| Seam Bursting Strength 450 kPa |
| Resistance to Pilling |
| After 2,000 revs Grade 4 |
| Resistance to Snagging |
| After 600 revs Grade 3-4 |
| Spirality |
| Tubular Garment Maximum 10% |
| Seamed Garment Maximum 5% |
| Dimensional Stability to:- |
| Washing +/-5% (Length/Width) |
| Appearance after Washing Must give a satisfactory |
| appearance. |
| Colour Fastness to:- |
| Washing cc. 4 s. 4 |
| Water cc. 4 s. 4 |
| Dry Cleaning cc. 4 |
| Perspiration cc. 4 s. 4 |
| Rubbing Dry 4 Wet 3-4 |
| Light BWS 4 |
T-SHIRTS/POLO SHIRTS more
| METHOD REQUIREMENT |
| Durability Wash cc. 4 |
| (as per Care Label) |
| Contrast Trims cc. 4-5 |
SWEATSHIRTS/JOGGING PANTS
METHOD REQUIREMENT
| Fibre Composition Label +/-3% |
| Bursting Strength 400 kPa |
| Seam Bursting Strength 400 kPa |
| Resistance to Pilling |
| After 18,000 revs Grade 4 |
| Spirality |
| Tubular Garment Maximum 10% |
| Seamed Garment Maximum 5% |
| Dimensional Stability to:- |
| Washing +/-5% (Length/Width) |
| Appearance after Washing Must give a satisfactory |
| appearance. |
| Colour Fastness to:- |
| Washing cc. 4 s. 4 |
| Water cc. 4 s. 4 |
| Dry Cleaning cc. 4 |
| Perspiration cc. 4 s. 4 |
| Rubbing Dry 4 Wet 3-4 |
| Light BWS 4 |
| Durability Wash cc. 4 |
| (as per Care Label) |
| Contrast Trims cc. 4-5 |
KNITWEAR
METHOD REQUIREMENT
| Fibre Composition Label +/-3% |
| Resistance to Pilling |
| After 11,000 revs Grade 4 |
| Spirality |
| Tubular Garment Maximum 10% |
| Seamed Garment Maximum 5% |
| Dimensional Stability to:- |
| Washing +/-5% (Length/Width) |
| Appearance after Washing Must give a satisfactory |
| appearance. |
| Colour Fastness to:- |
| Washing cc. 4 s. 4 |
| Water cc. 4 s. 4 |
| Dry Cleaning cc. 4 |
| Perspiration cc. 4 s. 4 |
| Rubbing Dry 4 Wet 3-4 |
| Light BWS 4 |
| Contrast Trims cc. 4-5 |
OVERCOATS
METHOD REQUIREMENT
| Fibre Composition Label +/-3% |
| Tensile Strength |
| Woollen 150 N (Warp/Weft) |
| Other 250 N (Warp/Weft) |
| Tear Strength 1600cN (Warp/Weft) |
| Seam Slippage (6mm opening) |
| Fitted Garment 150 N (Warp/Weft) |
| Loose Garment 120 N (Warp/Weft) |
| Seam Strength 180 N (Warp/Weft) |
| Abrasion Resistance 25,000 revs |
| Colour Change at 5,000 revs Grade 4 |
| Resistance to Pilling |
| After 2,000 revs Grade 4 |
| Dimensional Stability to:- |
| Washing +/-3% (Length/Width) |
| Appearance after Washing Must give a satisfactory |
| appearance. |
| Dry Cleaning +/-3% (Length/Width) |
| Appearance after Dry Cleaning Must give a satisfactory |
| appearance. |
| WIRA Free Steam (After minimum 4 hours relaxation) +/-2% (Length/Width) |
VERCOATS
METHOD REQUIREMENT
| Colour Fastness to:- |
| Water cc. 4 s. 4 |
| Dry Cleaning cc. 4 |
| Perspiration cc. 4 s. 4 |
| Rubbing Dry 4 Wet 3-4 |
| Light BWS 4 |
| Contrast Trims cc. 4-5 |
RAINCOATS/ANORAKS
METHOD REQUIREMENT
| Fibre Composition Label +/-3% |
| Tensile Strength 250 N (Warp Weft) |
| Tear Strength 1600cN (Warp/Weft) |
| Seam Slippage (6mm opening) 120 N (Warp/Weft) |
| Seam Strength 180 N (Warp/Weft) |
| Abrasion Resistance 30,000 revs |
| Colour Change at 5,000 revs Grade 4 |
| Resistance to Pilling |
| After 18,000 revs Grade 4 |
| Water Repellency (Bundesmann)* |
| Shower Resistant < 50mls |
| Rain Resistant < 10mls |
| Waterproof Garments (Hydrostatic Head) > 100cm WG |
| Dimensional Stability to:- |
| Washing +/-3% (Length/Width) |
| Appearance after Washing Must give a satisfactory |
| appearance. |
RAINCOATS/ANORAKS more
| METHOD REQUIREMENT |
| Dry Cleaning +/-3% (Length/Width) |
| Appearance after Dry Cleaning Must give a satisfactory |
| appearance. |
| WIRA Free Steam (minimum 4 hours relaxation) +/-2% (Length/Width) |
Colour Fastness to:- |
| Washing cc. 4 s. 4 |
| Water cc. 4 s. 4 |
| Dry Cleaning cc. 4 |
| Perspiration cc. 4 s. 4 |
| Rubbing Dry 4 Wet 3-4 |
| Light BWS 4 |
| Durability Wash cc. 4 |
| (as per Care Label) |
| Contrast Trims cc. 4-5 |
| *After one cleaning and pressing process. |
LININGS/POCKETINGS
METHOD REQUIREMENT
| Fibre Composition Label +/-3% |
| Tensile Strength 180 N (Warp\Weft) |
| Tear Strength 1600 cN (Warp\Weft) |
| Bursting Strength 400 kPa |
| Seam Slippage (6mm opening) 100 N (Warp\Weft) |
| Seam Strength 180 N (Warp\Weft) |
| Abrasion Resistance 30,000 revs |
| Colour Change at 5,000 revs Grade 4 |
| Resistance to Pilling |
| After 2,000 revs Grade 4 |
| Dimensional Stability to:- |
| Washing +/-3% (Length/Width) |
| Appearance after Washing Must give a satisfactory |
| appearance. |
ININGS/POCKETINGS more
METHOD REQUIREMENT
| Dry Cleaning +/-3% (Length/Width) |
| Appearance after Dry Cleaning Must give a satisfactory |
| appearance. |
| WIRA Free Steam (minimum 4 hours relaxation) +/-2% (Length/Width) |
| Colour Fastness to:- |
| Washing cc. 4 s. 4 |
| Water cc. 4 s. 4 |
| Dry Cleaning cc. 4 |
| Perspiration cc. 4 s. 4 |
| Rubbing Dry 4 Wet 3-4 |
| Light BWS 4 |
| Durability Wash cc. 4 |
| (as per Care Label) |
| Contrast Trims cc. 4-5 |
HATS
| METHOD REQUIREMENT |
| Appearance after Sponge Cleaning Must give a satisfactory |
| appearance. |
| Colour Fastness to:- |
| Perspiration cc. 4 s. 4 |
| Water cc. 4 s. 4 |
| Rubbing Dry 4 Wet 3-4 |
| Contrast Trims cc. 4-5 |
| Fabrics used in waterproof hats should be tested for water repellency by the most suitable method |
| in the same way as those for anoraks. |
GLOVES
METHOD REQUIREMENT
| Fibre Composition Label +/-3% |
| Bursting Strength 400 kPa |
| Seam Slippage (6mm opening) 100 N |
| (Garment Seams) |
| Seam Strength 180 N |
| (Garment Seams) |
| Dimensional Stability to:- |
| Washing +/-5% (Length/Width) |
| Appearance after Washing Must give a satisfactory |
| appearance. |
| Colour Fastness to:- |
| Washing cc. 4 s. 4 |
| Water cc. 4 s. 4 |
| Rubbing Dry 4 Wet 3-4 |
| Light BWS 4 |
| Contrast Trims cc. 4-5 |
HANDBAGS
METHOD REQUIREMENT
| Strength of Attachment 200 N |
| Appearance after Sponge Cleaning Must give a satisfactory |
| appearance. |
| Colour Fastness to:- |
| Water cc. 4 s. 4 |
| Perspiration cc. 4 s. 4 |
| Rubbing Dry 4 Wet 3-4 |
| Light BWS 4 |
UMBRELLAS
| METHOD REQUIREMENT |
| Water Repellency (Bundesmann) < 10ml Penetration |
| Appearance after Sponge Cleaning Must give a satisfactory |
| appearance. |
| Resistance to Corrosion of Metal Parts No corrosion/pitting |
| (after 4 hours wrapped in damp cloth at 37oC) or discolouration |
| Colour Fastness to:- |
| Water cc. 4 s. 4 |
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| Rubbing Dry 4 Wet 3-4 |
| Light BWS 4 |
| Contrast Trims 4-5 |
BUTTONS/BUCKLES
ETHOD REQUIREMENT
| Appearance after prolonged Washing to Care Label Must give a satisfactory |
| appearance. |
| Resistance to Corrosion of Metal Parts No corrosion/pitting or |
| (after 4 hours wrapped in damp cloth at 37oC) discolouration |
| Colour Fastness to:- |
| Washing cc. 4 s. 4 |
| Dry Cleaning cc. 4 |
| Water cc. 4 s. 4 |
| Rubbing Dry 4 Wet 3-4 |
Thanks for your sharing~ I learn a lot from it! Is that each Crease Recovery Tester can determine the recovery properties of fabrics by creasing in a loading device for a pre-determined time using a weight suitable for the test method specified?