Molding yɛ ɔkwan a wɔfa so yɛ polymers ahorow (powders, pellets, solutions anaa dispersions) ma ɛbɛyɛ nneɛma a ɛwɔ sɛnea wɔpɛ. Ɛho hia sen biara wɔ plastic nneɛma a wɔde yɛ nneɛma nyinaa mu na ɛyɛ polymer nneɛma anaa profile ahorow nyinaa a wɔyɛ. Adeyɛ a ɛho hia. Plastic molding akwan no bi ne extrusion molding, injection molding, compression molding, transfer molding, laminate molding, blow molding, kalenda molding, foam molding, thermoforming ne akwan foforo pii, a ne nyinaa wɔ wɔn adaptability.
Nneɛma a wɔde yɛ ɔhyew yɛ ɔkwan a wɔfa so yɛ nneɛma a wɔde thermoplastic nkratafa di dwuma sɛ nneɛma a wɔde yɛ nneɛma, a wobetumi aka sɛ efi plastic a wɔanwene no nea ɛto so abien. Nea edi kan no, wɔde krataa a wɔatwa no kɛse ne ne nsusuwii pɔtee bi si nkuku no frame so, na wɔma ɛyɛ hyew ma ɛyɛ elastic tebea a ɛkorɔn wɔ Tg-Tf ntam, wɔtrɛw krataa no mu bere a wɔreyɛ no hyew, na afei wɔde nhyɛso no di dwuma ma ɛbɛn nkuku no Nsusuwii no ani te sɛ nsusuwii no ani, na wobetumi anya ade no bere a wɔayɛ no nwini, wɔayɛ no sɛnea wɔayɛ no na wɔatwitwa no akyi. Wɔ thermoforming mu no, nhyɛso a wɔde di dwuma no gyina nhyɛso nsonsonoe a ɛba denam vacuuming ne mframa a wɔahyɛ no den a wɔde ba krataa no afã abien no nyinaa so titiriw, nanso ɛnam mfiri nhyɛso ne hydraulic nhyɛso nso so.
Su a ɛwɔ thermoforming mu ne sɛ forming pressure no sua, na thermoforming adeyɛ no te sɛ nea edidi so yi:
board (kratafa) ade → clamping → ɔhyew → nhyɛso → onwini → shaping → nneɛma a wɔayɛ no fã bi → onwini → trimming. Ɛsono sɛnea wɔyɛ ade a wɔawie no thermoforming wɔ mfiridwuma a wɔde yɛ adwuma pɛnkoro te sɛ injection molding ne extrusion no ho. Ɛnyɛ nea wɔde yɛ plastic resin anaa pellets a wɔde yɛ ɔhyew anaasɛ nkuku a ɛkɔ so a wɔde cross-section koro no ara fa die mu; saa ara nso na ɛnyɛ mfiri nnwinnade, nnwinnade ne akwan afoforo a wɔfa so yɛ nneɛma a wɔde di dwuma mfa ntwitwa plastic nneɛma no fã bi. Afei, sɛnea ɛbɛyɛ a wobenya nsusuwii ne kɛse a wɔhwehwɛ, nanso wɔ plastic board (kratafa) ade no fam no, ɔhyew, de nkuku, vacuum anaa nhyɛso di dwuma de sesa board (kratafa) ade no. Du nsusuwii ne kɛse a wɔhwehwɛ, a wɔde akwan a ɛfoa so ka ho, na ama woahu atirimpɔw a wɔde di dwuma no.
Wɔde thermoforming mfiridwuma no gyina ɔkwan a wɔfa so yɛ dade krataa so. Ɛwom sɛ bere a wɔde yɛ no nkyɛ de, nanso ahoɔhare a wɔde yɛ adwuma no yɛ ntɛmntɛm, sɛnea ɛyɛ adwuma wɔ ɔkwan a ɛnyɛ adwuma so no yɛ kɛse, nkuku no bo nyɛ den na ɛnyɛ den sɛ wɔbɛsesa, na sɛnea wotumi sesa no mu yɛ den. Etumi yɛ nneɛma akɛse te sɛ wimhyɛn ne kar afã horow, nketewa te sɛ anonne nkuruwa. Ɛnyɛ den sɛ wɔbɛsan de nneɛma a aka no adi dwuma bio. Etumi di nkratafa a ɛyɛ teateaa te sɛ 0.10mm ho adwuma. Saa nkratafa yi betumi ayɛ nea ɛda adi anaasɛ ɛnyɛ nea ɛda adi pefee, ɛyɛ ahwehwɛ anaasɛ ɛnyɛ nea ɛyɛ nsɛso. Wobetumi adi kan atintim nsusuwso ahorow wɔ krataa no so, anaasɛ wobetumi atintim nsusuwso ahorow a kɔla a ɛhyerɛn wom bere a wɔayɛ no awie no.
Wɔ mfeɛ aduasa kɔsi aduanan a atwam no mu no, ɛnam thermoplastic sheet (sheet) nneɛma ahodoɔ a ɛrekɔ soro sɛ nneɛma a wɔde yɛ adwuma, thermoforming process equipment a ɛkɔ so nya nkɔsoɔ, ne nneɛma a wɔde di dwuma kɛseɛ nti, thermoforming mfiridwuma anya nkɔsoɔ Ɛnam nkɔsoɔ a ɛyɛ ntɛmntɛm kakra nti, ne mfiridwuma ne nnwinnadeɛ no reyɛ pɛpɛɛpɛ kɛseɛ. Sɛ wɔde toto injection molding ho a, thermoforming wɔ mfaso horow a ɛne sɛ etumi yɛ nneɛma yiye, ɔkwan a ɛyɛ mmerɛw, ɛmma wɔmfa nnwinnade pii nsie, na etumi yɛ nneɛma a ɛwɔ soro kɛse. Nanso, ɛka a wɔbɔ wɔ nneɛma a wɔde yɛ nneɛma a wɔde yɛ nneɛma a ɛyɛ hyew ho no yɛ kɛse, na akwan pii wɔ hɔ a wɔfa so yɛ nneɛma a wɔyɛ no akyi. Ɛnam nkɔsoɔ a ɛkɔ so wɔ mfiridwuma a wɔde yɛ nneɛma mu ne hia a ɛhia sɛ wɔnya sikasɛm mu mfasoɔ kɛseɛ nti, mfiri a wɔde yɛ thermoforming no de nkakrankakra ayi kan no afi hɔ sɛ plastic board (kratafa) nneɛma a wɔde yɛ nneɛma a ɛde ne ho nkutoo, na wɔafi ase ne mfiri afoforo a wɔde yɛ nneɛma abom de adi nneɛma a wɔahyehyɛ no ho dwuma A complete production line for specific needs, na ɛnam so ama production efficiency atu mpɔn bio na ɛtew production cost of the final product.
Nneɛma a wɔde yɛ ɔhyew fata titiriw ma nneɛma a wɔde yɛ nneɛma a afasu yɛ tratraa na ɛwɔ soro kɛse. Plastik ahorow a wɔtaa de di dwuma no bi ne polystyrene, plexiglass, polyvinyl chloride, abs, polyethylene, polypropylene, polyamide, polycarbonate ne polyethylene terephthalate.
Bere a wɔde bɛkyerɛw: Apr-20-2021