Definition of Testing:
Testing is the method or process to ensure and verifying existing materials quality. It is a particular process to diagnosis the features of a product or service by implementing proven standard. It has to be done by using some recognized parameters to get optimum results. Nowadays several kinds of testing are essential before launching a product to market to ensure its quality and longevity. There are many competitors exist in the market to grab your region. Thus, manufactures don’t wish to take the risk of any hassles after sales onward because it’s related upon their goodwill.
In the context of garment business, testing means to get an optimum quality of a product which can fulfill buyers satisfactions as well as user’s demands.
Quality is the key point to increase the sale volume of any organizations and it also ensures customers satisfaction. If someone wishes to longer his business generation to generation and deserve good margin then he should maintain a quality standard of his products. In the present context of apparel business quality standards mostly depend upon modern technology to ensure a level of quality which can be used as a standard when comparing other things by the users and buyers. The main aspect to do lab test before launching a product to make sure good quality, promote repeat sales as well as product safety and prevent recalls, minimize customer complaints.
Chronological Sequence of Lab Testing:
Apparel testing was first inaugurated by AATCC (American Association for Textile Chemists and Colorists) in 1921.
March 31, 1940 – fashion industry of New York has made awareness among fashion merchandisers to do initial testing of apparel and accessories before launching products in local stores.
June 17, 1951 – Chicago Reliance Manufacturing Company has established a complete textile testing laboratory in the USA to make sure product quality.
April 12, 1955 – New York’s Fashion Institute of Technology was launched to implement improvise techniques in fabricating textiles into apparels.
1973 – Texanlab was started to make sure product quality which is now one of the largest independent textile testing institutes in Asia-pacific region.
October 1, 2003 – The American Society for Testing and Materials has organized ASTM F739 as a standard test method for ensuring permeation resistance.
In June 2000, renowned lab test service providers Bureau Verities and MTL have extended their apparel testing service in Bangladesh.
In January 2002, MTL and ACTS Testing Labs, Inc. merged into one entity to provide better service of their customers.
Lab Test is essential before going to bilk production to fix the standard of any items or ensure the quality of the goods that the items do not exist any harmful elements. It will reduce hassles as well as costing and increase the demand of the commodities. Please find some sources of standard test methods especially for apparel testing:
List of the Tests:
Several globally recognized renowned testing service providers are available to do the following test. Before testing you should ask buyer if they have any nominated laboratory because each buyer has a particular dependable testing service provider. Usually, buyer fixes the testing service provider to make sure their products quality. Thus you can’t go anywhere to do lab test as your wish. You have to fulfill buyer’s requirements during testing.
- Appearance after storage
- Resistance to ironing
- Zipper strength
- Durability of zipper
- Operability of zipper
- Zipper and Button toxicity
- Chain crosswise test of the zipper
- Slider twist off strength of zipper
- Top stop- zipped
- Button stop
- Slider pull-off strength, puller attachment strength test
- Slider lock hold strength test of zipper
- Top stop-unzipped
- Element pull off strength
- Closed-end test
- Shearing strength of hooks & loops fastener.
- Peeling strength of hooks & loops fastener.
- Separating unit crosswise strength
- Lateral strength of open attachment test
- Consecutive adhere / separation exercising on hooks & loops fastener
- Unsnapping of snap fasteners
- Security of metallic buttons, rivets etc.
- Security of button snap
- Strength of buttons
- Button tension, torque & impact test
- Resistance to washing liquor
- Small parts attachment
- Element slippage strength
- Open end fastener box test
- Tear Strength
- Bonding Strength
- Tensile Strength test
- Seam Performance
- Tenacity of Yarn
- Single Thread or Yarn Strength
Dimensional Stability (Shrinkage) & Related Tests:
- Durability wash of the garment
- Garments cleansing
- Care Label Verification
- Care label Recommendation
- Measurement of Bow & Skewness
- Dimensional Stability to Ironing
- Dimensional Stability to Free Steam
- Dimensional stability to relaxation
- Dimensional stability to felting
- Dimensional Stability to Washing
- Dimensional Stability to Dry Cleaning
- Appearance after Dry Cleaning
- Appearance after Laundering
- Skewing of Fabrics & Garments
Fabric Performance Tests:
- Flammability test
- Absorbency of Textiles
- Water Repellent test
- Fabric stiffness
- Water resistance
- Abrasion resistance
- Pilling resistance
- Air permeability test
- Water vapor permeability
- Oil repellency
- Soil release
- Stretch & Recovery
- Bursting strength test
- Wrinkle or Crease recovery
Color Fastness Tests:
- Effect of Heat test
- Shade Variation
- Acid Spotting
- Water Spotting
- Chlorine Bleaching
- Non-Chlorine Bleaching
- Non-Chlorine Bleaching
- Washing fastness test
- Perspiration (Acid & Alkaline) fastness test
- Rubbing or Crocking (Dry & Wet) fastness test
- Organic Solvent fastness test
- Water fastness test
- Light fastness test
- Ozone fastness test
- Sea Water fastness test
- Chlorinated Water fastness test
- Dry Cleaning fastness test
- Dry Heat fastness test
- Hot Pressing fastness test
- Alkali spotting fastness test
- Actual Laundering
- Saliva fastness test
- Phenolic Yellowing
- Fiber content
- pH value
- Aging test
- Formaldehyde spot test
- Nickel spot test
- Phenolic yellowing
- Dye transfer to storage
- Chlorinated pool water
- Formaldehyde content
- Colorfastness to perspiration
- Colorfastness to water
- Colorfastness to sea water
- Colorfastness to ozone
- Colorfastness to washing
- Colorfastness to dry cleaning
- Colorfastness to saliva
- Colorfastness to chlorine & non-chlorine bleach
- Azo dyes
- Water column
- UV Protection
- Construction DMFu
- Sensory test
- Fiber content
- Tensile test zipper
- Total Lead
- Total Cadmium
- Total Cadmium and Lead
- Antimony in PES
- Origination compounds
- Sensitizing disperse dyes
- Colorfastness to saliva & perspiration
- Chlorinated aromatic carrier
- Chlorinated Phenols (PCP)
- Chromium VI (after aging)
Here I have tried to compile some necessary tests which are known as common in the apparel industry. Beside this sometimes some uncommon tests have to do base on the specific demand of buyers. Test fees may vary from one provider to another provider.
All of the related information has picked up from following sites.
- ISO, AATCC standard reference books
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