1.Length -rau -Diameter Ratio (L/D)
Nws txiav txim siab lub sij hawm ntawm cua sov, compression, thiab sib tov uas cov ntaub ntawv undergo.
Loj L / D: Ua kom tiav plasticization ntau dua, sib xyaw ntau dua, thiab ntau dua degassing. The final products feature higher density and strength, with fewer bubbles and volatile substances.
L / D me me: Tej zaum yuav ua rau cov yas tsis sib xws, ua rau muaj cov pob zeb siv lead ua los yog tsis muaj zog txhua yam.
2.Compression ratio
Nws compacts thiab txiav cov ntaub ntawv los txhawb plasticization.
Optimal ratio: Ua kom cov yas zoo heev thiab ntom ntom.
Kev sib piv ntau dhau: Ua rau cov cua sov ntau dhau, ua rau cov khoom siv degradation (piv txwv li, PP ua nkig, PVC tig daj).
Tsis tshua muaj qhov sib piv: Ua rau tsis txaus plasticization, tawm hauv cov ntaub ntawv raw cov ntaub ntawv thiab cov khoom siv tsis zoo.
3.Mixing Elements (Txheej Txheem Tshooj / Pins, thiab lwm yam)
Lawv muab khaus shear thiab ntws faib los rhuav tshem agglomerates.
Txhim kho kev sib xyaw ua ke: tshem tawm cov xim sib txawv thiab cov pob zeb siv lead ua.
Txhim kho kev sib xyaw ua ke: Txo cov anisotropy, ua rau muaj kev sib txuam ntau dua ntawm cov khoom sib txuas / longitudinal ntawm daim ntawv.
4.Venting Section Design
Nws tshem tawm cov dej noo thiab qis- cov tshuaj molecular volatile hauv thaj chaw decompression.
Cov nyhuv venting zoo heev: txo cov npuas sab hauv thiab cov nyiaj streaks hauv daim ntawv, txhim kho pob tshab thiab lub zog txhua yam.
Qhov tseem ceeb tseem ceeb: Qhov tseem ceeb rau cov khoom siv hygroscopic (xws li PC thiab ntoo-cov khoom siv yas).
5.Screw khoom thiab nto tiav
Lawv cuam tshuam rau hnav tsis kam, corrosion kuj, thiab cov khoom adhesion.
Cov khoom siv tsis zoo: Hnav ua rau muaj paug (dub me ntsis), thaum corrosion ua rau xim sib txawv.
Rough nto tiav: Cov khoom adhesion thiab stagnation tshwm sim, ua rau degradation thiab yellowing.
Tsis muaj qhov "zoo tshaj plaws" ntsia hlau, tsuas yog "tsim" ib qho. Qhov zoo tshaj plaws ntsia hlau configuration yuav tsum tau ua kom muaj kev sib npaug ntawm cov yas txaus thiab kev tiv thaiv ntawm overheating degradation, nrog rau kev sib xyaw ntawm cov shear sib xyaw thiab khaws cia cov khoom siv.