Sɛnea wɔyɛ pet plastic sheets .

Nneɛma a atwa yɛn ho ahyia ho nimdeɛ a ɛrekɔ soro no, PET (Polyethylene Terephthalate) plastic ntama a wɔde yɛ nneɛma a wɔde yɛ nneɛma a atwa yɛn ho ahyia ho nimdeɛ a ɛrekɔ soro no abɛyɛ nea wɔde di dwuma kɛse wɔ nnuan a wɔde kyekyere nneɛma ho, ɛlɛtrɔnik nneɛma ho banbɔ, nhoma tintim, ne aguade ho dawurubɔ mu, esiane sɛnea ɛda adi kɛse, ahoɔden, ne sɛnea wotumi de di dwuma bio nti. Nanso ɔkwan bɛn so ankasa na wɔyɛ nkrataa yi? Momma yɛnhwɛ sɛnea wɔyɛ nneɛma no mu kɔ akyiri.

Nneɛma a wɔde yɛ nneɛma a wɔde yɛ nneɛma a wɔde yɛ nneɛma foforo ne nea wɔde hohoro .

Ade titiriw a wɔde yɛ PET krataa ne PET resin pellets, a ɛtɔ mmere bi a wɔde PET (RPEP) a wɔasan de adi dwuma no afra mu. Esiane sɛ PET yɛ nea ɛyɛ mmerɛw kɛse wɔ nsu ho nti, nsu a ɛboro so no betumi ama nsu a ɛwɔ mu no ayɛ nea ɛyɛ mmerɛw bere a wɔrefi mu no, na ɛtew nea ɛda adi pefee ne mfiri ahoɔden so.

Nea ɛbɛyɛ na eyi asiw eyi ano no, wodi kan ma pellets no we wɔ mframa a ɛyɛ hyew anaasɛ dehumifying dryers titiriw mu wɔ bɛyɛ 160°C–180°C, na ɛma nsu a ɛwɔ mu no so tew ma ennu 0.005%.

Melting ne extrusion .

Sɛ ɛyow wie a, wɔde PET pellets no kɔ extruder mu denam vacuum loader so. Wɔ extruder no mu no, wɔde ade no yɛ hyew anammɔn biara kosi 260°C–280°C na ɔhyew ne screw shear force a wɔaka abom no nwene.

Wɔde afiri a ɛyɛ fɛ yiyi PET a wɔadɔ no mu de yi efĩ ne nsensanee tuntum fi hɔ, na ɛma wohu sɛ krataa a etwa to no mu da hɔ yiye na ɛho tew.

Nkratafa a wɔhyehyɛ denam T-die casting so .

Wɔpia PET a wɔahoro no fa T-die ti mu , na ɛyɛ sini a ɛtrɛw a wɔayɛ. Die no tɛtrɛtɛ na ɛkyerɛ krataa no tɛtrɛtɛ, bere a die gap no di ne kɛse so.

Saa bere yi de, nneɛma no da so ara yɛ hyew na ɛyɛ nwunu, na ɛhwehwɛ sɛ wɔma ɛyɛ nwini ntɛm ara na wɔyɛ no.

Calender a wɔde yɛ nneɛma abiɛsa a wɔde yɛ nneɛma a ɛma obi ho yɛ hyew na ɛma onwini .

Anamɔn a ɛho hia sen biara no mu biako, a wotumi hu no pefee wɔ nneɛma a wɔyɛ no mu ne calendering nhyehyɛe a wɔde ROLL abiɛsa ayɛ . Ayɛmma a ɛyɛ hyew a wɔde yɛ no no fa rollers abiɛsa mu—nwi a ɛyɛ nwini, roll a ɛyɛ ne ho, ne roll a wɔde twetwe nneɛma—a ɛhɔ yɛ nwini nkakrankakra, ɛyɛ petee, na ɛyɛ den.

Saa anammɔn yi hwɛ hu sɛ:

• a ɛyɛ tratraa ne ne kɛse yɛ pɛ . Krataa no mu

• Nneɛma a ɛda adi kɛse ne gloss a enni ahurututu anaa waviness.

• Optional surface effects , te sɛ nkratafa a wɔakyerɛw so anaasɛ wɔayɛ ho mfonini, a egyina roller nhyehyɛe so.

Haul-off ne winding .

Wɔnam afiri a wɔde twetwe mmoa so na ɛtwe afieboa krataa a ɛyɛ nwini na ɛyɛ nsusuwii no fi mu na afei wɔyɛ ho adwuma wɔ akwan atitiriw abien so:

1. Winding into Rolls – Ɛfata ma nneɛma a wɔyɛ no daa ne akwantu a ɛnyɛ den.

2. Nkratafa a wɔatwa mu – ɛyɛ mmerɛw ma tintim, bobɔ, ne thermoforming applications.

Wobetumi de ayaresa afoforo te sɛ anti-fog coating, scratch resistance, anaasɛ lamination nso adi dwuma wɔ saa gyinabea yi mu a egyina adetɔfo ahwehwɛde so.

Nhwehwɛmu ne akwammisa a ɛyɛ papa .

Ansa na wobefi adwumayɛbea hɔ no, wɔyɛ afieboa nkrataa no ho sɔhwɛ a emu yɛ den, a nea ɛka ho ne:

• Nneɛma a ɛda adi pefee ne nea ɛyɛ hyew .

• Thickness uniformity .

• Tensile ne nkɛntɛnso ahoɔden .

• Aduan ho banbɔ a wodi so (FDA, EU gyinapɛn ahorow) .

Afei wɔde afieboa nkrataa a ɛfata di dwuma wɔ nnwuma ahorow pii mu, a nea ɛka ho ne aduan a wɔde gu mu (nnuaba nnaka, keeki a wɔde gu mu), kartɔn a wɔbobɔw, nneɛma a wɔde kyekyere nneɛma a ɛyɛ mmerɛw, nhoma a wɔde tintim, ne sini ahorow a ɛbɔ ho ban.

Awie

Mpɛn pii no, PET plastic nkrataa a wɔyɛ no di ɔkwan a wɔfa so yɛ nneɛma a wɔde yɛ nneɛma a wɔde yɛ raw → extrusion → T-die casting → ROLL-ROLL calendering → haul-off & winding → Quality Inspection . Anamɔn biara hwehwɛ sɛ wodi ɔhyew, ɔhyew, ne nhyɛso so pɛpɛɛpɛ na ama wɔahwɛ ahu sɛ krataa no ayɛ adwuma yiye.

Esiane sɛ wɔrehwehwɛ nneɛma a wɔde kyekyere nneɛma a ɛbɛkɔ so atra hɔ daa na wɔatumi ayɛ no foforo nti, afieboa nkrataa bɛkɔ so adi dwuma titiriw wɔ nnɛyi nneɛma a wɔde kyekyere nneɛma ne mfiridwuma mu nneɛma a wɔde di dwuma no mu.