What is Crease Recovery Tester?

by Engr. Kh. Mashiur Rahman | Jan 12, 2017 | QC QA

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

1. Units are metric or SI throughout.
2. Warp and Weft, denote the length and width of a woven fabric.
3. Wales and Courses denote the length and width of a knitted fabric.
4. The area adjacent to the selvedges should be avoided as being not representative of

the fabric.

5. The normal conditions for testing textiles are, 20^oC +/-2^oC and 65% +/-4% RH.

6. Excessive handling of specimens should be avoided.
7. Where production seams are available, these should be tested in addition to laboratory

seams.

8. This performance standard indicates commercial dry cleaning, i.e. solvent plus water and

detergent.

9. The effect of IEC detergent on white and pale coloured cellulose fabrics should be reported.
10. Abbreviations: –           cc.                    Colour Change

–           s.                      Staining

–           BWS.              Blue Wool Standards

11. 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

 SHIRTS/BLOUSES (Cont’d)

DRESS/SKIRTS

DRESS/SKIRTS1

 TROUSERS/JACKETS

TROUSERS/JACKETS 1

 TIES/SCARVES

 T-SHITS/POLO SHIRTS

 T-SHIRTS/POLO SHIRTS more

SWEATSHIRTS/JOGGING PANTS

 METHOD                                                                               REQUIREMENT

KNITWEAR

 METHOD                                                                               REQUIREMENT

OVERCOATS

 METHOD                                                                               REQUIREMENT

VERCOATS

 METHOD                                                                               REQUIREMENT

 RAINCOATS/ANORAKS

 METHOD                                                                               REQUIREMENT

RAINCOATS/ANORAKS more  

 LININGS/POCKETINGS

 METHOD                                                                               REQUIREMENT

ININGS/POCKETINGS more

 METHOD                                                                               REQUIREMENT

HATS

GLOVES

 METHOD                                                                               REQUIREMENT

HANDBAGS

 METHOD                                                                               REQUIREMENT

UMBRELLAS

BUTTONS/BUCKLES

ETHOD                                                                               REQUIREMENT