Nnianimu

Polyethylene terephthalate (PET) yɛ aduru a wɔfrɛ no thermoplastic polymer resin a wɔtaa de yɛ PET nkrataa. Wonim afieboa nkrataa sɛ ɛyɛ ahoɔden a ɛkyɛn so, ɛyɛ den, na ɛda adi pefee, na ɛma ɛyɛ nea nkurɔfo ani gye ho ma wɔde di dwuma wɔ akwan horow so. Nneɛma a wɔyɛ wɔ afieboa nkrataa mu no fa anammɔn pii ho, sɛnea wɔaka ho asɛm wɔ ase hɔ no.

Dɛn ne afieboa?

PET plastic krataa yɛ polymer a ɛnam ethylene glycol ne terephthalic acid a wɔde ka bom so na ɛba. Ɛyɛ thermoplastic resin a ɛnyɛ den sɛ wobetumi ayɛ no sɛnea ɛte ne ne kɛse ahorow. Wonim PET sɛ ɛwɔ ahoɔden a ɛkyɛn so, ɛyɛ den, na ɛda adi pefee, na ɛma ɛyɛ ade a eye ma nneɛma pii a wɔde di dwuma.

Nneɛma a wɔde di dwuma wɔ afieboa nkrataa mu .

Wɔde PET nkrataa di dwuma wɔ nneɛma ahorow mu, a nea ɛka ho ne nneɛma a wɔde kyekyere nneɛma, kar, ne ne yɛ. Wɔtaa de yɛ nkotoku, tray, ne nsukorade a wɔde yɛ aduan ne anonne. Wɔde afieboa ntama nso di dwuma wɔ kar adwuma mu de yɛ dashboard, apon ano aduru, ne trim. Wɔde afieboa ntama di dwuma sɛ ɔdan atifi nneɛma ne ɔfasu ho ntama wɔ adansi adwuma mu.

Resin ahosiesie .

Anamɔn a edi kan wɔ pet sheets a wɔyɛ mu ne resin no a wosiesie. Wɔnam ethylene glycol ne terephthalic acid a wɔde frafra mu so na ɛyɛ resin no wɔ reactor mu. Afei wɔma afrafrade no yɛ hyew kodu ɔhyew a ɛkɔ soro mu, na wɔde ade a ɛma nneɛma yɛ kɛse ka ho de fi ase yɛ ade no. Afei wɔma resin a efi mu ba no yɛ nwini na wotwitwa no nketenkete.

Extrusion .

Anamɔn a edi hɔ wɔ pet sheets a wɔyɛ no mu ne extrusion. Extrusion reyɛ melting resin pellets no na ahyɛ nneɛma a ayow no denam die so ma ayɛ krataa a ɛkɔ so. Extrusion akwan abien yɛ PET nkrataa: biako-screw extrusion ne twin-screw extrusion.

1. Screw biako a wɔde pue .

Wɔ screw extrusion biako mu no, wɔde resin pellets no kɔ hopper a ɛwɔ extruder no atifi. Afei ɔhyew ne nhyɛso ma nsu a ɛyɛ hyew no yow, na wɔhyɛ nneɛma a ayɛ hyew no fa die mu ma ɛyɛ krataa a ɛkɔ so.

2. Twin screw extrusion .

Wɔ twin screw extrusion mu no, screw abien nwene resin pellets no na ɛhyɛ ade a ayɛ hyew no denam die so. Twin screw extrusion yɛ adwuma yiye sen screw extrusion biako, efisɛ ebetumi ama wɔanya ade a ɛkorɔn wɔ bere tiaa bi mu.

Onwini ne ntrɛwmu .

Bere a wɔayi afi mu akyi no, wɔma PET krataa no yɛ nwini na wɔtrɛw mu ma n’ahoɔden ne sɛnea ɛyɛ den no tu mpɔn. Wɔde krataa no fa rollers a ɛtoatoa so mu ma ɛyɛ nwini na afei wɔsɔ hwɛ wɔ afiri no kwankyerɛ (MD) ne transverse direction (TD) so de kyerɛ polymer molecules no kwan. Saa adeyɛ yi a wɔfrɛ no biaxial stretching no ma PET krataa no mfiridwuma mu nneɛma tu mpɔn.

a wɔde wie .

Anamɔn a etwa to wɔ pet sheets a wɔyɛ no mu no rewie. Nea ɛka ho ne dwumadi ahorow pii, a nea ɛka ho ne trimming, twitwa, ne polishing. Mfiri a wɔde twitwa nneɛma no hyɛ afieboa krataa no fɛ ma ɛne ne kɛse ne ne nsusuwii hyia. Afei wɔma krataa no anoano yɛ mmerɛw na ɛyɛ fɛ na ama wɔn ho ayɛ fɛ na wɔayi anoano biara a ɛyɛ nnam afi hɔ.

Nneɛma pa a wɔde di dwuma .

Quality Control yɛ ade titiriw a ɛwɔ sɛnea wɔyɛ afieboa nkrataa no mu. Wɔhwɛ PET krataa no su so wɔ adeyɛ no fã biara mu de hwɛ hu sɛ ɛne nsɛm a wɔhwehwɛ no hyia. Wɔyɛ quality control checks wɔ raw materials so bere a extrusion, stretching, ne finishing.

Nneɛma a Atwa Yɛn Ho Ahyia Ho Nsusuwii .

PET yɛ ade a wotumi de yɛ nneɛma foforo, na sɛnea wɔyɛ afieboa nkrataa no mma nneɛma pii nsɛe. Nnwuma a wɔyɛ afieboa krataa no de nneɛma pii adi dwuma de atew nneɛma a atwa yɛn ho ahyia so, a nea ɛka ho ne nneɛma a wɔsɛe no a wɔsan de di dwuma ne ahoɔden a wɔde yɛ foforo a wɔde di dwuma.

Mfaso a ɛwɔ afieboa nkrataa so .

PET nkrataa wɔ mfaso pii sen nneɛma afoforo, a nea ɛka ho ne wɔn ahoɔden a ɛkyɛn so ne sɛnea ɛyɛ den, nea ɛda adi pefee, ne sɛnea wotumi de di dwuma bio. Wɔn mu yɛ hare nso na ɛnyɛ den sɛ wɔde bɛkɔ, na ɛma ɛyɛ nea nkurɔfo ani gye ho ma nneɛma a wɔde kyekyere nneɛma ho.

Mfomso a ɛwɔ afieboa nkrataa mu .

PET ntama no wɔ ɔhaw ahorow bi, a nea ɛka ho ne sɛnea ɛyɛ mmerɛw sɛ wɔbɛpaapae na wɔaprapra mu no. Wɔsan nso wɔ baabi a ɛyɛ mmerɛw sɛ ɛbɛbɔ, na ɛno na ɛto wɔn a wɔde di dwuma wɔ nneɛma a ɛyɛ hyew kɛse mu no ano hye.

Ntotoho a wɔde yɛ nneɛma afoforo .

Wɔtaa de PET nkrataa toto nneɛma afoforo ho, a polycarbonate ne acrylic nkratafa ka ho. Bere a nneɛma biara wɔ mfaso ne ɔhaw ahorow no, mpɛn pii no, afieboa nkrataa yɛ duforheir ahoɔden a wɔpɛ, ɛyɛ den, na wotumi de yɛ nneɛma foforo.

Daakye a ɛfa afieboa krataa a wɔyɛ ho .

Wɔhwɛ kwan sɛ nnwuma a wɔyɛ afieboa krataa no bɛkɔ soro wɔ mfe a ɛreba no mu, a ɛnam mmoa a wɔde ma wɔn a wɔhwehwɛ wɔn kɛse wɔ nneɛma ahorow pii mu no na ɛkanyan wɔn. Ɛda adi sɛ nkɔso a aba wɔ mfiridwuma mu no nso bɛma nneɛma a wɔyɛ no ayɛ papa na wɔayɛ no yiye.

Awie

PET nkrataa yɛ ade a ɛho hia a wɔde di dwuma wɔ akwan horow so, efi nneɛma a wɔde kyekyere nneɛma so kosi nea wɔde si so. Nneɛma a wɔyɛ wɔ afieboa nkrataa mu no fa anammɔn pii ho, a nea ɛka ho ne extrusion, stretching, ne finishing, na ɛhwehwɛ sɛ wɔyɛ nhyehyɛe a ɛyɛ katee wɔ su pa so na ama wɔahwɛ ahu sɛ ade no adi nsɛm a wɔhwehwɛ no ho dwuma. Ɛmfa ho ɔhaw ahorow bi, te sɛ nea ɛyɛ mmerɛw sɛ ɛbɛpaapae na ayɛ mmerɛw sɛ ɛbɛbɔ no, afieboa nkrataa wɔ mfaso pii wɔ nneɛma afoforo so, a nea ɛka ho ne ahoɔden, sɛnea ɛyɛ den, ne sɛnea wotumi de di dwuma bio no. Bere a afieboa nkrataa a wɔhwehwɛ no kɔ so yɛ kɛse no, wɔhwɛ kwan sɛ nkɔso a aba wɔ mfiridwuma mu no bɛma nneɛma a wɔyɛ no ayɛ papa na wɔayɛ adwuma yiye.