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8/13/2019 Session 2c - Quality Specification & Tolerances
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Session 2-
QUALITY SPECIFICATION& INSPECTION
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Purpose of standard &
Specification Purpose of standard & Specification is
to incorporate the desired quality into
the productsthat are produced basedon those documents & requirements.
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Specification Specification are prepared that provide the control over
the acquisition of materials, their performancecharacteristics and the production requirementsto make the finished products.
Performance characteristics.
Production process
Specification are means of
1. Communicating specific product description.
2. Developing product consistency.
3. Negotiating bids & Contracts.
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SPECIFICATION A precise statementof a set of requirements to be
satisfied by a material, product, system, or servicethat indicates the procedures for determiningwhether each of the requirements is satisfied.
Requirement must be met for specification to besatisfied.
Specification include more specific informationdescribing exact characteristics & performance levelsthat must be met.
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Tolerances & Minimums
Tolerancesdescribe the acceptablerange of variation from specification.
A Minimumsis the least or lowestacceptable value for any givenparameters or dimension.
Reasons Size compartmentalization.- Range of tolerance of component critical
to target market.
- Companys definition of quality for its product.
- Product aspect may adversely affect product
performance if it is not been followed strictly.
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Close Specification specifies the exactmaterial, components, or product bymanufacturer or vendor & includes style no.,
trade names or other specific identifier.
Open specification - Details for theconsideration of multiple vendors, including a
description of the character and/orperformance desired in the product ormaterial to be purchased.
Ex - ..
TYPES OF SPECIFICATION
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TYPE OF SPECIFICATION Target. Functional. Product. Process Inspection Test Acceptance.
Installation. Use Maintenance Disposal Procurement.
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Types of Specification
TargetPrinciple elements should be considered
- Focus is on terms of product type, price point andtarget markets need and expectation. It may be stated in companys mission or philosophy
statement. A high degree ofpassion for perfectionis reflected
in the shirts that we design, manufactureand sell.With shirts in tune with the global trendsin male
couture, " brings to you quality and perfection
blended together to give you a unique and wonderfulexperience.
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Functional Specification. FunctionalRelated to Performance
requirement& may identify the limitation.
Customer expectation will assist in developingfunctional spec.
Some Laws & rules incorporate functionalspec
Some functional spec must be met
Ex. Flammability for kids garment.
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Product Specification Product specIt include the spec related
to production.
- Seam & Stitch type.- Equipment needs to be used for each
operation.
- Thread need to be used, Stitch density &spec related to degree of matching forstripe, Plaid & Checks.
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Product Specification Product Specification.
Material standard & Specification.
Design Standard.
Design AspectDetail features &Characteristics.
- Design spec address the componentfeatures & embellishment.
- Ex. Collar, cuff, pocket placement.- Details about embellishment.
- Design spec/ Product Spec.
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Product Spec
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Material Specification. Material specidentification of
characteristic of each material with its
functional or performance aspect.-i.e. its type, description, qualitycharacteristic, and condition.
- Focus is on assessing material and noton product.
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Process specification Process spec address all processes
Pattern & marker making.
Spreading, & cutting.
Sewing.
Finishing. Packaging & shipping the products.
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Inspection Specification Inspection spec of different type.
- Ex -In process, Final or acceptance
spec.
* Test specification can be incorporatedwith functional & material specification.
- Before production.
- During production
- After Production.
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Acceptance sampling.
Acceptance samplingFrequency,type & location of defects that will or
will not be acceptable in finishedproduct.
It is related to appearance,
performance, labeling & packaging.
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Installation specification.
Installation spec.
Use Specification.
Maintenance spec.
Disposal Spec.
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Procurement specification
Procurement specificationInorder to evaluate the vendors ability to
meet the contract in terms of delivery,quantity & quality.
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Developing garment standard& Specification
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Product Specification
Product Specification.
Material standard & Specification.
Design Standard.
Design AspectDetail features &Characteristics.
- Design spec address the componentfeatures & embellishment.
- Ex. Collar, cuff, pocket placement.- Details about embellishment.
- Design spec/ Product Spec.
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Product Spec
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FunctionHow well a product does asper it is designed.
Performance requirement forspecialized end use.
- Performance standard for protective
wear.- Product ability to perform well in its
intended end use.
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Appearance standard
Appearance standardThe wayfinished goods will looks fromoutside.
It may describe the designfeatures.
- Plaid or stripe shirtDegree ofmatching requirement.
- Collar, cuff, placket.
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Appearance standard
It also include the factors related toworkmanship.
Pleat placement.
- Ability of Closure- Button, Zipper.
- Appearance standard emphasis more onexterior of the product, but important in
made ups, jackets like products.
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Size & Size spec sheet.
Standard size chart & Spec size chart.
Company standard for size spec sheet.
Size Specsheet.
http://localhost/var/www/apps/conversion/tmp/scratch_6/ASSQC%20SHIRT%20SPEC.xlshttp://localhost/var/www/apps/conversion/tmp/scratch_6/ASSQC%20SHIRT%20SPEC.xls8/13/2019 Session 2c - Quality Specification & Tolerances
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Construction standardProcess ofmaking the finished product.
SPI. Stitch & Seam type.
Thread type.
Seam allowance. Specification for
construction/Engineering spec.
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Quality specification.
Finishing specification.
- Procedure for final finished look of agarment.
- Thread trimming, pressing, steaming.
- It can also include processing.