PAPERMAKING PROCESS an introduction - Paper Online

pulp

ing

Paper fo to sep r recycling is arate th d e com issolved into ponen t fibres pulp .

Papermaking PROCESS an introduction Today’s high quality papers require a highly technical and accurate manufacturing process. This diagram details the paper making process and illustrates the use of wood and paper for recycling.

De-in

kin

g Adhes ive using a s and ink are flotatio re n proc moved ess.

Mech

an

ical P Woodc ulpin h Pulps ips are groun g are d comm used to ma to separate odity p ke high the rinting newsp v olume fibres. p rint an d mag roducts suc azine p h as aper.

Co

ating In the coatin g pro coa onto th ting color is cess, sprea e pap coatin er surface. d pigme g colour con The nts, bin ta ding a ins and ge Coatin various addit nts, g the p iv aper s es. times eve printin often improv ral g pro e its grade perties. Hig prin hcoated ting paper is up to 3 times.

Chem

paper FOR RECYCLING

Paper import for recycling an is pulp a t material fo an nd pap r er indu the stry.

ic

al Pu The wo lping o remov dchips are c e lignin o . Burnin oked to proces s g the wh by-products of the o e energy le pulping pro nables self-su c fficien ess to be t. head

bo

de-ba rk and c ing hippi Bark w ng hic

used fo h cannot b e r is strip papermakin g p logs an ed from the d Stripp used for en ed log ergy. s are chippe d pieces into small and re covere d.

Clean

ing

The fib re screen s are then w ed and as dried. hed; The pu lp is re ady to used d be ir bleach ectly or it ca nb ed into white p e aper.

x The he ad of wate box squirts a r and fi thin ho bre thro mixture ri machin zontal slit ac ugh a ro e endles ’s width onto ss the s movin a g wire n mesh.

se

ction The wa te wire se r is then rem ction. Here th oved on this to spre e a thin m d and conso fibres starts at. lid “sheet This proces ate into a s is ca formati lled on”.

Finis reels Calen

d

hing

and s

The pa heets p a reel ers are then or cut wound in in for prin to ting an sheets, rea to d d conv erting. y

ering After c oa device ting, the pa pe with tw The co o or m r can be cale ore roll m n ers thro dered. A ca the pa pression of th le per its smooth e rollers an ugh which th nder is a d th ep and glo ssy pro e applicatio aper is run. n perties , like ir of heat give oning shirts.

Paper

M

aking The w o diluted od pulp is its we with 100 tim ig liquid ht. The fibr es e is throug then run h the machin e.

Wood W materiaood is a ren ewable l for th indust e pulp and raw pape r y an sustain ably m d comes fro r anage d fores m ts.

wire

Press

s

ectio The pre n s web o s section sq fw ue water et papers a ezes the conten n t to 50 d lowers %.

dryin

g

A serie s heated of cast-iron cy to excess a tempera linders, tu o web o f 100°C, wh re in f shee e re the ts p and dry ing tak ass through es plac e.

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20 years of CEPI

20 years of CEPI

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