CORPORATE TRAINING AND PLANNING 1CORPORATE TRAINING AND PLANNING 2INTRODUCTIONBlowMouldingprocessiswidelyusedforproducing bottlesorotherhollowobjects,duetoitslest e!pensi"e # si$plest process to $nufcture%Blow$ouldingisopertedusinglow$oulding pressure # hence result in &ow Internl 'tresses%Co$$onlyused$terilsre()*,)+C,)*T,)C,),, )OM% CORPORATE TRAINING AND PLANNING 3It is principlly$ss production $ethod%It is esy to "ry wll thic-ness # weight of the prt% This is done either by chnging $chine prts or $elt conditions%CORPORATE TRAINING AND PLANNING 4Fig 4.1)RINCI)&*Mteril is fed intoheted brrel of *!truder%.iththehelpofscrewrottion#hetersthe plstic is $elted nd ho$ogenised% Melted$terilisforcedthroughsetofdie to for$tube or prison /0ot )lstic tube1prisonisintroducedinto$ould,The$ould closes # pinches off%CORPORATE TRAINING AND PLANNING 5CORPORATE TRAINING AND PLANNING 6Blow pin is inserted through the open end of the prison to for$nec-%2inlly ir is introduced through the blow pin to inflte the prison inside the $ould%By this, the $olten )oly$er copies the detils of the Mould%&stlythe$ouldedproductiscooled# ejected%Inthefinishingstge,theprtundergoes, tri$$ing,finishing,)rinting3&beling# decorting%CORPORATE TRAINING AND PLANNING 7B,'IC R*4UIR*M*NT'0o$ogeneous $elt of plstic $teril%2or$tionofthe$oltenresinintohollowtube or prison%'elingtheendsoftheprisonintheclosing $ould,e!cepttherethroughwhichblowingir cn be supplied%CORPORATE TRAINING AND PLANNING 8CORPORATE TRAINING AND PLANNING 9Insertingtheblowpinthroughtheopenend of the prison%Blowingorinfltingtheprisoninsidethe $ould%Cooling the blow $oulded prt%*jecting the prt # tri$$ing flsh if needed%2inishing # decortions on the product%B&O. MOU&DIN5 M*T0OD'CORPORATE TRAINING AND PLANNING 10Bsedonthe$ethodusedtocretethe prisonorprefor$,twotypesofblow $oulding re recognised%6% *!trusionBlowMouldingthtusesn e!truded tube%7% InjectionBlowMouldingthtusesn Injection Moulded prefor$% CORPORATE TRAINING AND PLANNING 11*!trusion Blow $ouldingInjection Blow $oulding'tretch Blow $oulding%Multilyer Co e!trusion Blow $oulding%Blow $oulding $ethods co$$only used in Industries re (3CORPORATE TRAINING AND PLANNING 12Table 4.1B&O. MOU&DIN5 M,C0IN*' # T0*IR CON'TRUCTION%Blow $oulding $chine consists of two prts(6% The prison 2or$ing Unit/*!truder1%7% The Blow $oulding unit%CORPORATE TRAINING AND PLANNING 13CORPORATE TRAINING AND PLANNING 14B&O. MOU&DIN5 UNITMde off two fe$le c"ities tht close roundprison%)inch3off t one or both ends%One entrnce for the blowing ir%, cutout section%CORPORATE TRAINING AND PLANNING 15MOU&D M,T*RI,&' U'*D2or Mould )rts(lu$inu$,lu$inu$ lloys,'teel,Berylliu$3Copper/Be8Cu1#Cst9inc lloys%2or )inch off section(Berylliu$3Copper or 'teelinserts%Be8Cu )ro"ides high ther$l conducti"ity% 'teelInsertpro"ideswerresistnce# toughness% CORPORATE TRAINING AND PLANNING 16O)*R,TION' # 2UNCTION'Blow Mould Closing opertions by()neu$tic 'yste$Mechnicl 'yste$ # 0ydrulic 'yste$%Cl$p )lten $echnis$ ser"es following 2unctions ( 0old # lign the $ould hl"es%0old the $ould closed ginst the pressure of blowing ir%CORPORATE TRAINING AND PLANNING 18C&,M)IN5 2ORC*Cl$ping 2orce re:uired(2C;,)f2C3Cl$ping 2orce%,3)rojected ,re%)3Blow)ressure/Usullyintherngeof