Chii chinonzi PE? Unoziva zvakawanda sei nezvepepa rakaputirwa nePE?

Munhu wese anofanira kuziva bepa. Nekuti tinogona kuona mhando dzese dzezvigadzirwa zvepepa muzviitiko zvakawanda muhupenyu hwezuva nezuva. Semuenzaniso, tinoziva makapu epepa, ndiro dzepepa, ndiro dzepepa uye mabhokisi ezvekudya zvinokurumidza. Tese tinoziva kuti bepa iri hygroscopic (rinotora hunyoro nyore nyore) uye rine simba shoma rekuputika. Asi kana ukangwarira, uchaona kuti mapepa aya ane firimu rakajeka, rinopenya, rakatsetseka mukati. Iro firimu rePE, rinoita serinoisa jasi remashiripiti pabepa, richiripa simba guru rekusatya mvura nemafuta. Ngatiburitsei chakavanzika chebepa rakaputirwa pamwe chete!

Zviri Mukati

1. Chii chinonzi PE?
2. Kupatsanurwa kwePE.
3. Kugoverwa kwesimba rekugadzira zvinhu zvePE nenyika.
4. PE coated bepa chii? Rinoshandiswa kuitei?
5, Kupatsanurwa kwepepa rakafukidzwa nePE.
6. Kushandisa bepa rakaputirwa nePE.

Chii chinonzi PE?

Tisati tanzwisisa bepa rakaputirwa nePE, ngatitaurei nezvezvinhu zvaro zvikuru - polyethylene. Polyethylene ipfupiso yePE, inova thermoplastic resin polymerized kubva ku ethylene. Chitarisiko che polyethylene itsvina chena yakaita semukaka, iyo isina kunaka, isina hwema, haina chepfu uye inonzwa sewakisi. Chinhu chikuru che polyethylene chakachipa, ine simba rakanaka rekudzivirira kutonhora, kugadzikana kwemakemikari, insulation yemagetsi nezvimwe zvinhu. Saka ine mashandisirwo akasiyana-siyana. Inonyanya kushandiswa mukugadzira mafirimu, zvinhu zvekurongedza, midziyo, mapaipi, waya netambo, zvinodiwa zvezuva nezuva, nezvimwewo. Uyezve, inogona kushandiswa sezvinhu zvinodzivirira zvakanyanya materevhizheni, radar, nezvimwewo. Kubva payakashandiswa muna 1922, polyethylene yave resin yakakura kwazvo pasi rose uye inoshandiswa zvakanyanya mupurasitiki yekurongedza. Ine chinzvimbo chakakosha muindasitiri yepurasitiki.

Kupatsanurwa kwePE
Nekuda kwemaitiro akasiyana epolymerization ye polyethylene, chimiro chayo chakasiyanawo, uye hunhu hwechigadzirwa chinoenderana nahwo hwakasiyanawo zvikuru. Zvikuru zvinogona kukamurwa kuita: Low-Density Polyethylene (LDPE), Linear Low Density Polyethylene (LLDPE), High-Density Polyethylene (HDPE).
LDPE: Inonyanya kushandiswa pakugadzira mapepa ekugadzira, firimu rekurima, firimu rekurongedza maindasitiri, waya, nezvimwewo;
LLDPE: Inonyanya kushandiswa pawaya netambo, mapaipi, zvinodiwa zvezuva nezuva, nezvimwewo;
HDPE: Inonyanya kushandiswa pakubatanidza tambo, mambure ekuredza, nezvimwewo.

 

Kugoverwa kwesimba rekugadzira zvinhu zvePE nenyika
Kubva muna Kubvumbi 2022, kugona kwekugadzira PE muChina kwasvika matani angangoita mamiriyoni 29.18, zvichireva 21% yehuwandu hwese hwekugadzira PE pasi rose. Zvinogona kuonekwa kubva mudata kuti kugona kwekugadzira PE pasi rose kwakanyanya kuChina, United States neSaudi Arabia. China parizvino ndiyo nyika ine kugona kukuru kwekugadzira polyethylene pasi rose.

 

 

Chii chinonzi PE coated bepa?

Tatove nekunzwisisa kwakadzama kwePE pamusoro apa, saka chii chinonzi PE coated bepa? Zvichitaurwa zviri nyore, PE coated bepa chinhu chakagadzirwa nepepa sehwaro hwechinhu uye chakaputirwa nefirimu repolyethylene pabepa rehwaro, kureva kuti, zvidimbu zvepurasitiki zvinoputirwa pamusoro pebepa nemuchina wekukanda. Bepa iri nyore kunyorova, asi mushure mekubatanidzwa zvakakwana nepolyethylene, bepa rakaputirwa rinogona kuwana mhedzisiro yekusapinda mvura, kusapinda mafuta uye kusapisa zvakanyanya.

Kupatsanurwa kwepepa rakaputirwa nePE

Zvichienderana nemusiyano uripo pakati pehuwandu hwefirimu rakafukidzwa, rinogona kukamurwa kuita bepa rakafukidzwa nePE rine mativi maviri, bepa rakafukidzwa nePE rine mativi maviri, uye bepa rakafukidzwa nePE rine mativi maviri.

1. Pepa rakafukidzwa nePE rine mativi maviri
Pepa rakaputirwa nePE rine divi rimwe chete rakaputirwa nePE film kune rimwe divi repepa rekutanga. Rinoshandiswa mumakapu epepa ekunwa anopisa, bepa rehamburger, nezvimwewo.
2. Pepa rakapetwa nePE rine mativi maviri
Pepa rakaputirwa nePE rine mativi maviri rinoputirwa nePE kumativi ese epepa rekutanga. Rinoshandiswa mumakapu epepa anotonhora ekunwa.
Pepa rakaputirwa nepakati

Pepa rakaputirwa nesandwich rinofanira kuisa PE coating pakati pemapepa maviri epasi kuti rigadzire bepa rimwe chete kuti riwedzere kuchinjika kwepepa.
Inowanzoshandiswa mu: kurongedza desiccant, mabhegi ekurongedza chikafu, nezvimwewo.
Zvichienderana nekusiyana kwemavara, inogona kukamurwa kuita mhando mbiri: firimu rakajeka uye firimu diki.
Firimu rinopenya ifirimu repolyethylene rinoonekera mativi maviri rine pamusoro wakajeka uye ruoko rwakatsetseka. Firimu risina kupenya ifirimu repolyethylene risina kupenya rine firimu risina kupenya rine pamusoro une mhute.
Mapendi ane mavara akajeka uye zvinhu zvakadhindwa zvine mavara akawanda. Mafirimu asina ruvara rwakawanda.
Kushandiswa kwepepa rakaputirwa
Bepa rakaputirwa rine hukama hwakanyanya nehupenyu hwedu hwezuva nezuva uye rine mashandisirwo akasiyana-siyana, anonyanya kushandiswa mukurongedza, chikafu, mishonga, zvemagetsi, hardware, kucheka machira, nezvimwewo.

Kushandiswa kwepepa rakafukidzwa:

Mashandisirwo epepa rakaputirwa
1. Makemikoro: kurongedza desiccant, mothballs, washing powder, zvinochengetedza.
2. Chikafu: mapakeji enoodles, kurongedza ice cream, mukaka.