Dɛn ne Plastic a Ɛyɛ Ɔhyew a Ɛyɛ Paara?

Thermoforming yɛ adeyɛ a ɛhwehwɛ sɛ wɔma plastic nkratafa yɛ hyew ma ɛyɛ mmerɛw na afei wɔde nkuku nwene no ma ɛyɛ nsusuwii pɔtee bi. Plastik ade a ɛfata a wobɛpaw no ho hia kɛse wɔ... thermoforming a wɔde yɛ nneɛma adeyɛ, sɛnea plastic ahorow wɔ su ne dwumadie ahodoɔ. Enti, dɛn ne plastic a eye sen biara a ɛma ɔhyew? Saa asɛm yi bɛhwehwɛ plastic ahorow pii a wɔtaa de yɛ thermoforming ne mfaso ne ɔhaw ahorow a ɛwɔ so mu de aboa wo ma woapaw nea ɛfata.

1. Nneɛma a wɔfrɛ no polyethylene Terephthalate (PET) a wɔde yɛ nnuru .

PET yɛ plastic a wɔtaa de yɛ ɔhyew a wɔde di dwuma kɛse wɔ nnuan ne anonne a wɔde kyekyere nneɛma mu. Mfaso atitiriw a ɛwɔ so no bi ne:

• Nneɛma a ɛda adi kɛse: PET wɔ nhumu a ɛkyɛn so, na ɛma wotumi da nneɛma a wɔyɛ no adi pefee.
• Nnuru a ɛko tia denneennen: PET tumi gyina nnuru dodow no ara ano na ɛnyɛ mmerɛw sɛ ɛbɛsɛe.
• Nneɛma a wɔsan de di dwuma: PET yɛ ade a wotumi de di dwuma bio, na edi nneɛma a atwa yɛn ho ahyia ho ahwehwɛde ahorow ho dwuma.

Nanso, nea enye wɔ PET ho ne sɛnea ɛnyɛ hyew a entumi nnyina pintinn, efisɛ ɛtaa sɛe wɔ ɔhyew a ɛkɔ soro mu, na ɛma ɛho hia sɛ wɔde ahwɛyiye di dwuma wɔ ɔhyew a ɛkɔ soro mu.

2. Nneɛma a wɔde yɛ polypropylene (PP) .

PP yɛ plastic a ɛma ɔhyew a emu yɛ hare na ɛyɛ den a wɔde di dwuma kɛse wɔ aduruyɛ, nnuan a wɔde kyekyere nneɛma, ne kar afã horow mu. Mfaso atitiriw a ɛwɔ so no bi ne:

• Ɔhyew a ɛko tia yiye: PP wɔ ɔhyew a ɛko tia yiye na ebetumi akɔ so ayɛ nea ɛyɛ den wɔ mmeae a ɛhɔ yɛ hyew kɛse.
• Nnuru a ɛyɛ den a ɛko tia: PP tumi gyina acid, base, ne organic solvents dodow no ara ano.
• Ɛka a ɛba fam: Sɛ wɔde toto plastic afoforo a ɛma ɔhyew ho a, PP ho ka sua, na ɛma ɛfata sɛ wɔyɛ no kɛse.

PP no bɔne ne sɛ ɛnyɛ nea ɛda adi pefee, na ɛma ɛnyɛ nea ɛfata kɛse mma dwumadie a ɛhia sɛ ɛda adi kɛseɛ te sɛ PET.

3. Nneɛma a Wɔde Yɛ Polyvinyl Chloride (PVC) .

PVC yɛ ade a ne bo nyɛ den na ɛnyɛ den sɛ wɔbɛyɛ plastic a ɛma ɔhyew yɛ adwuma wɔtaa de di dwuma wɔ adansi nneɛma, nnuruyɛ nnwinnade, ne nneɛma a wɔde kyekyere nneɛma mu. Mfaso atitiriw a ɛwɔ so no bi ne:

• Mfiri ahoɔden a ɛkorɔn: PVC wɔ mfiri ahoɔden pa ne kateeyɛ, a ɛfata ma nneɛma a ɛyɛ den.
• Nnuru a ɛko tia denneennen: PVC tumi gyina nnuru dodow no ara ano na ɛnyɛ mmerɛw sɛ ɛbɛsɛe.
• Plasticity a ɛkorɔn: Ɛnyɛ den sɛ wɔbɛyɛ PVC ho adwuma na wobetumi de nneɛma ahorow a wɔde ka ho ayɛ nsakrae wɔ ne su ahorow mu.

Nanso, adebɔne a ɛwɔ PVC ho ne sɛnea ɛnyɛ adwuma yiye wɔ nneɛma a atwa yɛn ho ahyia ho, efisɛ ebetumi ayi nneɛma a epira afi mu bere a wɔreyɛ ho adwuma na wɔretow agu, na ama ɛho hia sɛ wɔde ahwɛyiye di dwuma wɔ nneɛma a nneɛma a atwa yɛn ho ahyia ho ahwehwɛde kɛse wom mu.

4. Nneɛma a wɔde yɛ polystyrene (PS) .

PS yɛ plastic a ɛyɛ hyew a ɛda adi kɛse na ne bo nyɛ den a wɔde di dwuma kɛse wɔ nnuan a wɔde kyekyere nneɛma, nneɛma a wɔde di dwuma, ne ɛlɛtrɔnik nneɛma mu. Mfaso atitiriw a ɛwɔ so no bi ne:

• Nhumu a ɛkorɔn: PS wɔ nhumu a ɛkyɛn so, na ɛma wotumi da nneɛma adi pefee.
• Ɛnyɛ den sɛ wobedi ho dwuma: Ɛnyɛ den sɛ wɔbɛyɛ PS no thermoform na wotumi nwene no ntɛmntɛm ma ɛyɛ nsusuwii a ɛyɛ den.
• Ɛka a ɛba fam: PS wɔ nneɛma a wɔyɛ ho ka a ɛba fam, na ɛma ɛfata ma nneɛma akɛse a wɔyɛ.

Nea enye wɔ PS ho ne ne denden a enye, na ɛma ɛyɛ mmerɛw sɛ wobebubu na ɛnyɛ nea ɛfata kɛse mma dwumadie a ɛhia sɛ ɛyɛ den kɛseɛ.

5. Polylactic Acid (PLA) a wɔde yɛ nneɛma pii .

PLA yɛ plastic a ɛtumi sɛe nneɛma a atwa yɛn ho ahyia a ɛyɛ adwuma yie wɔ nneɛma a atwa yɛn ho ahyia ho, wɔde di dwuma kɛseɛ wɔ nnuan a wɔde kyekyere nneɛma, nnuruyɛ mu nneɛma, ne 3D tintim mu. Mfaso atitiriw a ɛwɔ so no bi ne:

• Nneɛma a atwa yɛn ho ahyia ho adwumayɛ pa: PLA yɛ nea abɔde a nkwa wom sɛe koraa na edi nneɛma a atwa yɛn ho ahyia ahwehwɛde ahorow ho dwuma.
• Nneɛma a ɛda adi kɛse: PLA wɔ nhumu pa, na ɛma wotumi da nneɛma a wɔyɛ no adi pefee.
• Nneɛma a wɔsan de di dwuma: Wobetumi asan de PLA adi dwuma bio na wɔasan de adi dwuma, na ɛtew nneɛma a wɔsɛe no so.

Nea enye wɔ PLA ho ne sɛnea entumi nnyina ɔhyew ano yiye, efisɛ ɛtaa sɛe wɔ ɔhyew a ɛkɔ soro mu, na ɛma ɛho hia sɛ wɔde ahwɛyiye di dwuma wɔ ɔhyew a ɛkɔ soro mu.

Ɔkwan Bɛn so na Wobɛpaw Plastic a Ɛyɛ Thermoforming a Ɛyɛ Paara?

Nea eye sen biara a wobɛpaw plastic a ɛma ɔhyew yɛ adwuma hwehwɛ sɛ wosusuw nneɛma ahorow ho, a nneɛma a wɔde yɛ adwuma, nea wɔhwehwɛ sɛ wɔde di dwuma, ne ɛka ka ho. Nea edi kan no, application tebea no yɛ ade titiriw a ɛma wɔpaw nneɛma. Mpɛn pii no, nnuan a wɔde kyekyere nneɛma no hwehwɛ sɛ ɛyɛ nea ɛda adi kɛse na nnuru ntumi nkɔ mu, na ɛma PET yɛ nea eye sen biara esiane sɛ ɛyɛ nea ɛda adi yiye na ɛko tia nnuru nti. Wɔ nnuruyɛ mfiri ho no, ɔhyew a ɛko tia kɛse ne biocompatibility ho hia, na ɛma PP yɛ ɔkwan pa a ɛko tia ɔhyew a ɛkyɛn so ne nnuru a ɛko tia. Bio nso, ebia adansi nneɛma ne mfiridwuma mu nneɛma bi bɛpɛ PVC esiane ne mfiridwuma mu ahoɔden kɛse nti, ɛmfa ho sɛ ɛnyɛ adwuma yiye wɔ nneɛma a atwa yɛn ho ahyia ho no.

Ɛka ho hia titiriw wɔ nneɛma akɛse a wɔyɛ mu. PP ne PS taa yɛ nea wɔn a wɔyɛ no pii pɛ esiane sɛ ɛho ka sua nti, nanso wɔ nneɛma bi a ɛkorɔn mu no, ebia PET a ne bo yɛ den anaa PLA a ɛnyɛ nea ɛmma nneɛma a atwa yɛn ho ahyia no fata kɛse. Esiane sɛ nnipa pii rehu nneɛma a wɔde yɛ adwuma ne nneɛma a atwa yɛn ho ahyia ho banbɔ nti, nneɛma a atwa yɛn ho ahyia ho ahwehwɛde nso reyɛ ade titiriw a wɔde gyina so. PET a wotumi de di dwuma bio ne PLA a ɛtumi sɛe bio koraa no wɔ mfasoɔ kɛseɛ wɔ dwumadie a nneɛma a atwa yɛn ho ahyia ho ahwehwɛdeɛ kɛseɛ wɔ mu. Wɔ dwumadie a ɛhia sɛ ɛda adi kɛseɛ na wɔde akyerɛ nneɛma no, PET ne PS yɛ akwan pa, berɛ a dwumadie a ɛko tia ɔhyew a ɛkorɔn no fata yie ma PP.

Ɛdenam nneɛma a ɛfata a wɔpaw so no, wobetumi ama nneɛma no adwumayɛ ayɛ yiye ma adi nea nneɛma ahorow a wɔde di dwuma no hwehwɛ ho dwuma. Sɛ worepaw plastic a ɛyɛ hyew a eye sen biara a, ɛho hia sɛ wususuw ade no su, sɛnea wɔde di dwuma, ɛka, ne nneɛma a atwa yɛn ho ahyia ho ahwehwɛde ahorow ho yiye na ama wɔahwɛ ahu sɛ wɔpaw nea eye sen biara, na ama nneɛma no ayɛ papa na wɔatumi asi akan wɔ gua so. Mewɔ anidaso sɛ saa asɛm yi bɛboa wo ma woate plastic ahorow a ɛma ɔhyew no su ase na woapaw nea ɛfata.