Ku lulamisiwa ka switirhisiwa swa plastiki leswinga lulamisiwangiki ngopfu ngopfu i maendlelo yo n’oka, ku khuluka naku kufumeta swiphemuphemu swa rhaba kuva swiva switirhisiwa leswi hetiweke endzhaku ko vekiwa. I endlelo ro kufumeta ivi endzhaku ri titimela. Nakambe i endlelo ro cinca tipulasitiki kusuka eka swiphemuphemu kuya eka swivumbeko swohambana hambana. Hikuva va muchini wo endla thermoforming ya pulasitiki, endlelo hinkwaro ri nga endleriwe ku tirha hi ku helela handle ko tirha hi voko, naswona khwalithi ya xiendliwa yi tshamisekile! Leswi landzelaka swi ta hlamusela endlelo ro lulamisa ku suka eka mavonelo ya switeji swo hambana.
1. Ku n’oka
Xigwitsirisi xa xitirhisiwa lexi xi pfumelela swiphemuphemu swa swilo leswi nga tirhisiwangiki leswaku swi n’oka hakatsongo-tsongo swi va mati lama khulukaka. Switirhisiwa swohambana hambana leswinga lulamisiwangiki ngopfu ngopfu eka vulawuri bya mahiselo. Ku engetela mahiselo swita hatlisisa ku khuluka ka switirhisiwa swoka swinga tirhisiwanga, leswinga engetelaka ku tirha kahle, kambe aswi bohi leswaku switiyisisa mbuyelo. Ku ringanisela loku faneleke ku fanele ku fikeleriwa. Ku engetela kwalano, mbuyelo wa kahle xikan’we na swihlawulekisi swa PP eka xiyimo xale henhla xa thermal cracking hileswaku swikahle ku endla leswaku raw material yi khuluka kahle kuya eka die hinkarhi wa vuhumelerisi, leswaku kuta papalata ku tatiwa loku ringaneleke kumbe reflux. Reflux swivula leswaku ku khuluka ka raw material swihatlisa kutlula mpimo wa vuhumelerisi, naswona ekuheteleleni swi engetelela average flow efficiency, leswi ringanaka na ku antswisiwa ka MFR. I yin’wana ya tindlela leti kumekaka ta ku lulamisa, Hambiswiritano, yi tlhela yi vanga ku hangalasiwa ka MFR loku nga tolovelekangiki, leswi nga vangaka ku tlakuka ka ku nga tshamiseki na ku tlakuka ka mpimo wa swihoxo. Hambiswiritano, hikokwalaho ka ku tirhisiwa, switirhisiwa leswi hetiweke hi PP ahi switirhisiwa leswingana high dimensional precision, hikokwalaho nkucetelo awuri wukulu.
2.Xikundzu xa xikurufu
Vunyingi bya ku lulamisiwa ka PP swiya hi screw kuva yi fambisa fluidity, hikokwalaho dizayini ya screw yina nkucetelo lowukulu. Diameter yi khumba vuhumelerisi, naswona compression ratio yi khumba nhlayo ya ntshikelelo. Switlhela swi khumba vuhumelerisi na mbuyelo wa swihumelerisiwa leswi hetiweke, kukatsa na mbuyelo wo hlanganisa wa switirhisiwa swohambana hambana (Color Masterbatch, swiengeteri na swihundzuluxi). Ku khuluka ka switirhisiwa swoka swinga lulamisiwanga ngopfu ngopfu swiya hi hitara, kambe ku hlangana na ku hlangana ka switirhisiwa swoka swinga endliwa swita tlhela swihumelerisa matimba yo hisa ya friction kuva ku hatlisisa ku khuluka. Hikokwalaho, screw compression ratio i yitsongo, ku khuluka i kutsongo, naswona rivilo ro rhendzeleka rifanele ku engeteriwa, leswi endlaka leswaku kuva na friction heat energy yotala kutlula screw leyingana compression ratio leyikulu. Hikwalaho, hakanyingi ku vuriwa leswaku a ku na mutshila eku endleni ka tipulasitiki, naswona munhu loyi a twisisaka hi vukheta ndlela leyi muchini wu tirhaka ha yona hi yena n’wini. Ku hisiwa ka switirhisiwa swoka swinga tirhisiwanga ahi hitara ntsena, kambe switlhela swikatsa kuhisa ka friction xikan’we na nkarhi wa suffocation. Hikwalaho, lexi i xiphiqo lexi tirhaka. Ntokoto wa pfuna ku tlhantlha swiphiqo swa vuhumelerisi naku antswisa vukorhokeri. Loko mbuyelo wo hlanganisa wa xikurufu wuri kahle ngopfu, minkarhi yin’wana swikwirikiri swohambana hambana swa switeji swimbirhi kumbe swikwirikiri swa biaxial swa endliwa, naswona xiphemu xin’wana na xin’wana xa swivumbeko swohambana hambana swa swikwirikiri xi vekiwa hiku hambana kuva ku fikeleriwa mbuyelo wohambana hambana wo hlanganisa.
3. Fa kumbe u fa nhloko
Ku vumbiwa nakambe ka plastiki swiya hi mould kumbe nhloko ya die. Xiendliwa lexi hetiweke xa injection molding i xa swiphemu swinharhu, naswona xivumbeko na xona xi rharhanganile. Xiphiqo xa ku hunguteka xi fanele ku tekeriwa enhlokweni. Switirhisiwa swin’wana i plane, strip na needle continuous product dies. Loko kuri swivumbeko swo hlawuleka, swi hlayiwa tani hi swivumbeko swo hlawuleka. Kufanele ku tekeriwa enhlokweni xiphiqo xaku kufumela hiku hatlisa naku pima. Michini yo tala ya pulasitiki yi endliwe ku fana ni swiringi. Matimba ya extrusion lawa ya fambiwaka hi screw yata vanga ntshikelelo lowukulu eka outlet leyintsongo naswona ya antswisa vuhumelerisi bya kahle. Loko nhloko ya die yi endliwe tani hi xihahampfhuka, ndlela yo endla leswaku switirhisiwa swo ka swi nga tirhisiwanga swi hangalasiwa hi ku ringana eka vuandlalo hinkwabyo, dizayini ya nhloko ya die ya hanger ya swiambalo i ya nkoka swinene. Nyikela nyingiso eka nkarhi wa extrusion ku engetela pompo ya fish gill xikan’we naku tiyisisa mphakelo wa switirhisiwa swoka swinga lulamisiwanga.
4. Ku kufumela
Ku engetela eka ku chela switirhisiwa swo ka swi nga tirhisiwanga eka gede ya sprue, xivumbeko xa injection xitlhela xiva na dizayini ya switirhisiwa swo kufumeta switirhisiwa eka xiteji xo kufumeta. Extrusion molding yititshege hi channel ya mati yo kufumela eka roller kuva yi fikelela mbuyelo wo kufumela. Ku engetela kwalano, kutlhela kuva na ti air knives, mati yo kufumeta lawa ya tsakamaka hiku kongoma eka nkwama wo pfurha, hollow blowing na tindlela tin’wana to kufumeta.
5. Ku engetela
Ku lulamisiwa nakambe ka swikumiwa leswi hetiweke na ku engeteriwa swi ta ndlandlamuxa mbuyelo. Xikombiso, rivilo ro hambana ra bandi ro paka leri fambiwaka hi swirhendzevutani swa le mahlweni na swa le ndzhaku swi ta vanga mbuyelo wo engetela. Matimba yo koka ya xiphemu xo engetela xa xitirhisiwa lexi hetiweke ya tiyisiwa, leswi swinga oloviki ku swi handzula, kambe swa olova swinene ku swi handzula hiku olova. Ku hangalasiwa ka ntiko wa molecule swita tlhela swi khumba mbuyelo wa extension eka vuhumelerisi bya rivilo lerikulu. Switirhisiwa hinkwaswo leswi humesiweke, kukatsa na ti fibre, swina ku engeteriwa lokunga ringaniki. Ku vumbiwa ka vacuum na compressed air swinga tlhela swi tekiwa tani hi xivumbeko xin’wana xa ku engeteriwa.
6. Ku hunguteka
Raw material yin’wana na yin’wana yina xiphiqo xa kuhunguteka, leswi vangiwaka hi ntshikelelo wale ndzeni hinkarhi wa thermal expansion, cold contraction na crystallization. Hiku angarhela, ku andzisiwa ka mahiselo xikan’we naku hunguteka ka xirhami swa olova ku swi hlula, leswinga endliwa hiku lehisa nkarhi wo kufumela eka ku lulamisiwa naku hlayisa ntshikelelo kuya emahlweni. Ti crystalline raw materials titala kuva na ku hambana lokukulu ka shrinkage kutlula ti non crystalline raw materials, kwalomu ka 16% eka PP, kambe kwalomu ka 4% ntsena eka ABS, leswi hambaneke swinene. Xiphemu lexi xilava ku hluriwa eka mould, kutani swiengeteri kuhunguta shrinkage rate switala ku cheriwa, LDPE yitala ku cheriwa eka extrusion plate kuva yi antswisa xiphiqo xa necking.
Muchini wo endla thermoforming wa pulasitiki wu tirha kwalomu ka tipulasitiki hinkwato ta thermoforming. Emalembeni ya sweswinyana, muchini wa pulasitiki wo endla thermoforming na wona wu tirhisiwile hi laha ku humelelaka ku vumba tipulasitiki tin’wana leti tiyisaka ku hisa. Xirhendzevutani xa ku vumba xa muchini wa plastiki wo endla thermoforming xi komile (tisekoni nyana kuya eka timinete nyana), naswona xinga endla swivumbeko leswingana xivumbeko xo rharhangana, vukulu lebyi kongomeke naswona hi nkarhi wun’we. Switirhisiwa swa michini yo endla thermoforming ya GTMSMART swi katsa Muchini wo Thermoforming wa Tipulasitiki, . Muchini wo Thermoforming Khapu, . Muchini wo Vumba Vacuum ya Plastiki, . Muchini wo Thermoforming Pot ya Swiluva ya Plastiki.
GTMSMART nyika michini ya xiyimo xosungula hi nxavo lowunene swinene lowu nga fikelelaka swilaveko swa wena swa vuhumelerisi bya xitalo hiku olova. Languta nxaxamelo wa hina wa switirhisiwa naswona u ta kuma swihlawulekisi swo tala swa matirhelo ya le henhla leswi fambelanaka na swilaveko swa wena.
Nkarhi wa poso: Oct-31-2021