Plastic extruders yɛ nnwinnade titiriw a ɛwɔ plastic a wɔde yɛ nneɛma mu, a wɔde di dwuma kɛse wɔ plastic nneɛma te sɛ nsu afiri, nsɛm a ɛfa ho, sini, ne waya ne nhama a wɔde siw ano mu. Wɔn nnyinasosɛm a wɔde di dwuma ne sɛ wɔbɛma plastic a ɛyɛ den a wɔde yɛ nneɛma (te sɛ granules anaa powder) no ayɛ hyew denam ɔhyew ne nhyɛso a ɛnam skru a ɛkyinkyini no so ba no so, na wɔkɔ so yi fi mu ma ɛyɛ ade a ɛyɛ nsusuwii pɔtee bi.
Plastic extruders titiriw ne nneɛma atitiriw abiɛsa: extrusion nhyehyɛe, drive nhyehyɛe, ne ɔhyew ne onwini nhyehyɛe. Extrusion nhyehyɛe a ɛwɔ hopper, screw, ne barrel no yɛ nnwinnade no mu ade titiriw. Plastik a wɔde yɛ nneɛma a wɔde yɛ aduru no fi hopper no mu hyɛn toa no mu na wɔde skru a ɛredinhyia no kɔ anim, bere a plastic no de ɔhyew afiri bi a ɛwɔ toa no akyi no nwene nkakrankakra. Screw nhyehyɛe no nya plasticizing effect ne production efficiency so nkɛntɛnso tẽẽ. Screw ahodoɔ a ɛtaa ba no bi ne nkakrankakra-Nsakraeɛ, mpofirim-Nsakraeɛ, ne mpaepaemu ahodoɔ, a ɛfata ma plastic a wɔde yɛ nneɛma ahodoɔ ne dwumadie ahwehwɛdeɛ. Drive nhyehyɛe no ma tumi a ɛho hia ma screw rotation na mpɛn pii no ɛyɛ motor, reducer, ne bearings, a ɛhwɛ ma screw speed gyina pintinn. Ɔhyew ne onwini nhyehyɛe no di barrel no hyew so pɛpɛɛpɛ, na ɛma plastic no nwene yiye bere a esiw ɔhyew ne ɔsɛe a ɛboro so ano no.
Wobetumi akyekyɛ plastic extruders mu sɛ single-screw, twin-screw, ne multi-screw extruders a egyina wɔn application so. Single-screw extruders, a ne nhyehyɛe yɛ mmerɛw na ɛho ka sua no, fata ma dwumadie a ɛyɛ general no mu deɛ ɛboro soɔ-purpose plastics. Twin-Screw extruders, ne wɔn mixing tumi a ɛkɔ soro no, wɔtaa de di dwuma ma-precision processes te sɛ compounding, nsakrae, filling, ne compounding. Multi-screw extruders no yɛ nea wɔde di dwuma titiriw ma polymer nneɛma titiriw ho adwuma. Bio nso, wɔtaa de mfiri a wɔde di dwuma wɔ ɔkwan a ɛyɛ adwuma so no hyɛ nnɛyi extruders mu, na ɛma wotumi yɛ nsakrae pɛpɛɛpɛ wɔ nneɛma te sɛ ɔhyew, nhyɛso, ne ahoɔhare mu, na ɛma nneɛma a wɔyɛ no yiye ne nneɛma a wɔyɛ no yɛ papa.
Plastic extruders di dwuma titiriw wɔ nnwuma a wɔyɛ, kar, aduruyɛ, ne nneɛma a wɔde kyekyere nneɛma mu. Sɛ nhwɛso no, wɔde PVC paipu extruders di dwuma de yɛ nsu ne nsu a ɛkɔ nsu mu a wɔde fa nsu mu, bere a wɔde sini a wɔabɔ no afiri a ɛbɔ no yɛ sini a wɔde kyekyere nnuan ho. Esiane sɛ nneɛma a atwa yɛn ho ahyia ho banbɔ ne ahoɔden a wɔkora so ho ahwehwɛde rekɔ soro nti, mfiridwuma a wɔde yi nneɛma fi mu a ɛyɛ adwuma yiye ne ahoɔden-akorade a wɔde yi nneɛma fi mu no rebɛyɛ nnwumayɛbea su, na ɛrema wɔayɛ plastic ho adwuma akɔ nneɛma a wɔde di dwuma nyansam na ɛyɛ pɛpɛɛpɛ so.
