" Kagazbazar "

Papermaking, is a statistical process wherein furnish containing fibers, fines, colloidal suspensions and emulsions are spreaded on endless running wire, to form a sheet.
Papermaking Has Heterogeneity: Heterogeneity of furnish & process variables in sheet forming, pressing, drying, calendaring like winding, slitting, finishing, packing, transportation and storage are liable to develop some defects in paper. The defect in final product observed during inspection/quality control, can thus be classified from their point of origin viz.

Defects Due to ..

furnish - composition like

winding and slitting like

formation-effect of machine components like

packing and storage :

Dirt
Shives, Slivers
Surface size
Specks
Spots due to dye, Rosin, Starch
Shadow marking.

Uneven edges
Adhesive tape adhering
slitter dust
Hard or soft spots
Loose edges
Bump or dent on reel belly, deformation
Scraps or sample cuts or snapping of paper
poor joint
Rough slitting
Wrinkles
Baring or piping
Waviness due to tension variation and joints
Knife jumping, Telescopic due to loose paper/core.

Pin holes
Wet streaks
Wire line
Water/Condensate dripping
Felt crushing
Dryer picking
Seam marks
Calender stamping
Hard and soft spots
Air, bubbles, foam
Surface and structural sidedness
Dandy picking
Fluff loose fibres
Cloudy formation
Calender Blackening
Uneven caliper, moisture, basis weight.

Dirt Piercing from floor before wrapping
Cracked edges.

Terminology	Description
Cockle	Local deformation of a sheet of paper due to unequal shrinkage giving a slightly crumpled appearance.
Composition of Paper	Nature and proportions of the components fibrous and non-fibrous constituents of the paper, as determined by suitable analysis
Cooking	Treatment of fibrous raw material by heat in presence of water with added chemicals with or without pressure to product pulp.
Countraries	Any visible matter that may be present and which is unwanted in the pulp (prior to stiff or stock preparation), stuff or paper under consideration .
Crushing	Defect in paper , in the form of a local clotting caused by disturbances of the formation of already formed wet web by pressure or excessive moisture at the web end .
Curl	Deformation of a sheet of paper or board, over all its surface which therefore tends to roll up into the form of a cylinder .
Dusting	The separation of particles from the dry sheets by simple agitation or rubbing.
Felt mark	Imprint left on the paper by the paper -machine felt due to the pressure of the felt in it .
Fluff	Loose particles removed from the surface and the edges of paper by agitation or rubbing (see also dusting).
Foam marks	A defect in paper caused by the presence of foam in the stock as it comes from the head box on to the paper wire machine. It is also called "Froth spots " .
Rattle	The sound produce when a sheet of paper is shaken . It is used as a rough and ready method of judging quality .
Show-through	The condition where printing on one side of the sheet can be seen from the other side when it is viewed by reflected light .
Translucent paper (show - through)	Paper which permits the partial transmission of light but through which objects can be distinguish visually only when the paper is in direct contact with them.
Two -Siddedness	An unlimited difference of varying degree in surface texture or shade existing between the two faces of a sheet of paper or board , which is inherent in the method of manufactures .