Technology Film: momo, āhuatanga, ngā wāhi tono

Ko te hītori o tenei rauemi timata ki waho ara i roto i te waenganui o te rau tau whakamutunga,. I whakamahia te reira i mo te tarapēke o taonga te ahumahi kai. Ko te kiriata, ko te hua o akatuke'anga hangarau maha o te hanganga matū me te hanga o te hangarau e kua whakaratohia ia ki te whānuitanga o ngā hua whānui me te taumata tiketike o te whakamahi.

hanganga

Āhuatanga puritia e te kiriata kirihou hangarau, me tona whakaaro whakawhirinaki i runga i te hanganga:

• polyethylene pēhanga High he kiato iti (LDPE).
• Low-pēhanga polyethylene he hanganga mātotoru (HDPE).
• LDPE rārangi ki te hanganga whakarerekētia.
• Momo o te pūhui: hei tauira, LDPE me HDPE, polypropylene.

whakaritenga hangarau

E kore te mea paitini te polyethylene, he kore-paitini rōpū rauemi pūkākā ki te mata flash o 300 ° C, whakawhirinaki te tahi atu āhuatanga i runga i te hanganga:

Polyethylene kiriata o te pēhanga iti:

• Mihini rauemi roa (0,94 ÷ 0,96 g / cm ^2).
• Kainga ki pāmahana teitei (aratau rere i 112 C °).
• hanganga tamau ki ngako kai me hinu. Kūpapa ki matū waikawa me te kawakore.
• Te kore - taumata uruhanga tiketike, tata 6 nga wa ki runga ake i te kiriata HP. whakapā muhu ki waiwaro, me te houhou - ki matū ngāwari oxidizable.
• Film Hangarau i runga i HDPE he mahuinga ia mo hua tākai pangia sterilization, me te momo ngā o ngā hua kai.

Ko te kiriata polyethylene o te pēhanga teitei:

• He he mātotoru o 0,91 ÷ 093 g / cm ^2.
• kaha kurut whaitake.
• He auau rere iti taea ki te Weld mongamonga rauemi.
• ātete huka: ki runga ki - 60C °.
• I runga i te mata o te peita, ko te ngāwari ki te tono.

Linear LDPE: he anga mo te hanganga o te kiriata multilayer totoro.

Ia momo o te rauemi hua me te whakatau i nga whakaritenga o te kāwanatanga tuhinga ture:

• kiriata kirihou hangarau - GOST 10354 - 82.
• Tīngongo polyethylene - GOST 25951 - 83.
• HDPE GOST 16338 - 85.
• LDPE GOST 16337 - 77.

production

whakaputaina kiriata Hangarau e tikanga Tangohanga i roto i te maha o ngā wāhanga:

• Rewa a whakatangi o āhua-wai hanganga, te putanga tuku i roto i ngā momo rerekē o baits:

1. Ring, hoatu te ahua o te putea tākainga. I te putanga o te rauemi pupuha putapu ake me te maroke ki runga te roa katoa, ki te tightening muri o nga pahu, me te coils-marutanga tonu. Time-kai tukanga, e taea ki te tiki i te koaka ki runga ki te 2400 mm i roto i roa.
2. Flat, taea whārangi kiriata tika. I muri i te Tangohanga, kua maroke te rauemi, totoro me tapahia. Tenei hangarau tere, engari te pepa polyethylene kore e nui ake 1.5 m.

• Polyethylene toro whakarerekē ki te whakaputa i te rauemi ki te āhuatanga e hiahiatia ana:

1. Chemical, ki te tua o te huānga motuhake.
2. Mechanical mā te totoro.
3. "Crosslinking" i te katote radiation
4. stabilization Thermal. I muri i te maimoatanga wera, riro te hanganga papanga atu ātete ki te kino aunoa.

Hangarau kiriata: āhuatanga me ngā momo o ngā hua oti

Tei runga i te feedstock whakarerekētanga commercially taea kite i te polyethylene hangarau e whai ake nei:

• Svetostabilizirovany: kua he ātete tiketike ki te radiation solar, tei te ora i runga i te kukū o stabilizers. He tae kanapa: kōwhai, matomato, me te pera i runga i.
• Tīngongo: ka taui wera ona rahi, obtyagivaya ahanoa kei roto. whanui tukutuku 150 mm ki 2500 karekau mm o.

te na'ina'iraa:

1. Roa: 40 ki te 80%.
2. Tāpae: 10 ÷ 50%.

• Te Tīngongo hiato: ahua rerekē o paninga ki te tua o te tauhohenga e te whakarerekē i nga āhuatanga rauemi i raro i te āhuatanga e hiahiatia ana.
• I puai: Film Technology ki mata o te polypropylene polyethylene ranei.
• Mārama: ko te rauemi pūtake - HDPE. Kua pai ake hydrophilic kiriata ethylene copolymer mārama.
• Tae: Material - HDPE, colorants, stabilizers.

Polyethylene kiriata Hangarau: Applications

Ko te kanorau o ngā momo ka taea te whakamahi o te polyethylene i tata ao katoa o te mahi a te tangata:

• Construction: i roto i te puka o te ringaringa whare pungawerewere ranei, matotoru 60 ÷ 200 microns. Whakamahia hoki pallets tākai me ngā rauemi uhi, me te tiaki i papa i contamination.

• ahuwhenua:

1. Film Technology ngarahu mangu: ngā momo o ngā pepa, tae atu hipoki "i raro i te mamaoa" wana (matotoru 60 microns), ngoue, kiato 10 ÷ 60 microns.
2. Hydrophilic ki mārama whakarei: hoki greenhouses.

• tarapēke:

1. Tīngongo kiriata (ringaringa kānawehi) o te tuatahi, me te tuarua, iti rauemi raw.
2. I roto i te puka o peke: hoki tākai ururua me te ururua.

Polyethylene kiriata kua he whānuitanga nui o hangarau, taea makona i tetahi hiahia o te kaihoko. Ko te drawback matua - ko reira he wā nui o te whāwehe o te rauemi me te taumata iti o te tukatuka.