New Britain herald., 1927-11-04
CONTROLLED AIR
 SPEE6 OUTPUT
Production of Jews Print Great
 ly Icreased

When the average American
 newspaper roder picks up his fa-
 vorite newspper. he little realizes
 that the yer, air he breathes has
 played an Indispensable part in
 making possible the finished record
 of the worl's news which he reads. according leading engineers in
 the news rint paper industry.
 For the American newspaper-the speediest product of the ultra modern at of printing-is turned out in cdntless millions every day that reaires thousands of tons of paper nanufactured by revolution ary methods developed through the scienceof air-conditioning and con- trolledair.
 New, print paper Is made from wood pulp and when the pulp is brount into the paper mill it is placa in machines which must re- move two pounds Of water for ever pound of paper produced. And In the process of removing this water, more than forty times it's weight in air must be pumped into the mathines to take out the mois- ture, tlr engineers declare.
 Tn oter words, each machine in the ave'age large mill has a ca pacity C producing 1Sn pounds of paper per minute but requires 1o.ooo pounds Of air every sixty -o water. How these pounds multiply by the minute is indicated by the fact tha one big mill turns out zoo tons Of paper every day To re- move ieavy vapors which pour from tie machines into the rooms of the mill. powerful exhaust fans are usI to drive them to the out side H1ile blower fans are used 10 pump air in from the outdoors and 10 fore tons of air into the ma chine: to remove the water. The mills are efficiently ventilated 10 drive out destructive moisture. The paper pulp which goes through each machine every minute is q feet wde and 800 feet long for q total o 16, 500 square feet.
 When the wood pulp is first brougr into the mill it is two to three Ter cent solid and the balance Is watr. This pulp is dragged along ovor special screens at a rate Of S00feet per minute and as much wateras possible pressed out After this rocess and when the pulp is readyfor the fan treatment, it con- tains hrec parts of water to one of solid. The completed paper, as it appeirs in the daily newspaper. con- tainsfron five to ten per cent of watG.
 Various kinds of wood are used for paper manufacture but these are chiefly divided between pine. | fir. 1emlock and spruce. For news prih paper. the wood Is ground but in other kinds of paper manufac- tur, such as that used for certain tyrs of magazines, for stationery anl other purposes, the wood is chmically disintegrated to obtain a l0ger fibre. .NFNH Pi ill' pdH'l at | te present time Is averaging 7,70n ! ons per day In Canada and 5.S3S : ons per day in the United States. ! according to figures compiled by | he news print bureau.
 After the newspaper Is read and i ussed away 1t eventually finds its way back to another type of paper hill where 1t is ground into box | toard. often known as 'card- foard'. Here again controlled air llays a part in the process Of manu- factue although q more spectacular application is found in the manufac- ture of coated paper. Tn this in dustr. the paper is foated by air actior created by special fans 10 prev"t 1t from marking until the "coathg" dries. Controlled air