4分制布料检验英文版.docVIP

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Thislessonistointroducetheknowledgeofthefabricinspection.

A.Themethodofpenaltyscores

NormallywewillnotusetheAQLtoassessthequalityoffabric,weusethe4pointsystemtoscorethedefectsonfabricforfabricinspection.

The4pointsystemprovidedameansofdefiningthedefectsaccordingtotheseveritybyassigningdemeritsandpenaltypoints.Allfabricsincludingthegreyandfinished,wovenandknitting,canbegradingbythissystem.Visibledefectswerescoredinproportiontothesizeofthedefects.

Penaltypoint,Defectsinanydirection,withtheexceptionofspecify,arescoredasfollowings:

Defectssize

Penaltypoints

Defects≤3inches

1

3inches<Defects≤6inches

2

6inches<Defects≤9inches

3

Defects>9inches

4

Note:NosingleYardorsingledefectscanbescoredmorethan4points;

Defectslikeholes,netting,droppedstitches,ladderingandtornselvagearescored4pointsregardlessofthedefectssize;

B.Thesamplingsize

Ifnotspecified,thesamplingsizewillfollowbelow:

Lotsize

Samplingsize

<1000yards

Fullsample

1000yardsto10000yards

1000yards;

10000yards

(Squarerootoflotsize)X10

C.Acceptablepointsbyfabricgroups

--Wovenfabric:

Group

FabricDescription

Individualrolls

Forsamplesize

1

Allsynthetic–polyester—acetate-nylon

Dressingskirting;

FilamentRayon

WorstedSpun;

Silk/Silkblends;

20points/100squareyards

16points/100squareyards

2

BasicDenim/cottonTwill

Cottoncanvas/plain

Cottonpoplin/oxfordGinghamShirting

Spunrayon

Woolenspun

Cottonchambray/Indigoyarndyed

Alljacquard/dobby/Printed

Corduroy/velvet

Stretcheddenim/corduroy/woven

Cotton/syntheticblends;

28points/100squareyards

20points/100squareyards

3

Linenblends

RamieBlends

Muslin

40points/100squareyards

32points/100squareyards

4

Duopionisilk/Lightweightsilk

Patchwork

50points/100squareyards

40points/100squareyards

--KnittingFabric:

Group

FabricDescription

Individualrolls

Forsample

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