Ethylene-Vinyl Acetate Copolymer ata
Eva o ata, lea e tu i fafo mo latou matagofie matagofie, e masani ona gaosia e le aofia ai le faasoesa. O meatotino o lenei ata e fesoʻotaʻi ma le anotusi o vinyl acetate (va). A o le au o loʻo faʻaopoopoina, o le ata e faʻaleleia atili ai i tulaga o le aulelei, faʻamamafa le saʻo le tetee, ma le vevela vevela, ma le vevela vevela. A oʻo i le VITS e oʻo atu i le 15% ~ 20%, o lona faatinoga e tutusa lava i le strexed pvc ata. O le talatalanoa, pe a maualalo le tau o loʻo i lalo ifo, o le ata tifaga o loʻo latalata atili i le ildpe ata. I se tulaga lautele, o le anotusi o le VAI O LE OLA DOGITS e pulea i le va o le 10% ~ 20%.
Ua lauiloa Eva mo a latou faaupuga, vaivai, ma le lagolagoina ma le le fiafia i ai. O lona mamafa sili ona lelei o le malosi o le malosi ma le maualuga o loʻo avea ma elomilua e sili atu le maualuga e pei o le 59% ~ 80%, faia o se lelei sili ona faʻamalosia o le ata o loʻo paʻu. In the field of packaging, it is widely used in the collection and wrapping of boxes and bagged goods, as well as the stretch wrapping of pallets. I le taimi e tasi, Evage Thee e fetaui lelei mo le tuʻuina atu o pusa afifiina o ato mo mea mamafa mamafa pei o fetilaisa ma vailaʻau suka. I se faʻaopopoga, o i ai lelei le saoasaoa o le saoasaoa o le faʻamaufaʻailogaina ma le aofia o le faʻamaufaʻailoga, ma e masani ona faʻaaogaina o se vevela o le faʻapipiʻi vaega mo ata faʻapitoa.
Polyvyll le ava malosi
O auala o le gaosiga o PV ata e aofia ai fofo i le kasa ma le aofia ai le fesuisuiai. Due to the high melting temperature of PVA and its proximity to the decomposition temperature, direct melt extrusion is difficult, so water plasticization is often used to reduce the processing temperature. I lenei auala, o le ata e tatau ona mago ma taofiofi pe a uma ona e maua ai se faʻataʻitaʻiga pro ata. I le fanua o afifiina, o le alamanuia e masani ona faʻaaoga le 'auala e gaosi ai PV ata.
PV e mafai ona vaevaeina i vai-tetee ma ipu ata ma vai. Water-resistant films are made of PVA with a polymerization degree of more than 1000 and completely saponified, while water-soluble films are made of partially saponified PVA with a low degree of polymerization. I faiga afifiina o talosaga, e masani lava ona tatou faʻaaogaina le vai-teteʻe PV ata tifaga.
PVA film, which stands out for its excellent transparency and gloss, is not only less prone to static electricity accumulation and dust absorption, but also has good printing performance. I totonu o le matutu matutu, e faʻaalia lelei ai le taulealoa male fuatia i tua, faʻapea foi ma sumusa malosi. I se faʻaopopoga, PVA ata e lelei le malosi o le malosi, faigata, ma tetee atu i le faʻanoanoa faʻapalepaʻu, ma e mafai ona vevela-faamauina. Peitaʻi, ona o lona vevela aoga i le manogi e manava ma malosi vai vetesuption, o le tulaga tulaga e manaʻomia e faʻaleleia. In order to solve this problem, polyvinylidene chloride coating, ie, K coating, is usually used to enhance its air tightness, fragrance retention and moisture resistance. O lenei ata faʻapitoa o le pvva e sili ona lelei mo meaʻai afifi.
O le PRVA e masani ona faʻaaogaina o se vaega o le parter mo mea ata tifaga, ma e masani ona faʻaaogaina i le afifiina o meaʻai vave, oloa, kulimi kulimi, kulimi kulimi ma isi meaai. I le taimi lava lea, o lona tasi ata e tasi e masani ona faʻaaogaina i le afifiina o tamaitusi ma lavalava. I se faʻaopopoga, o le Suavai-Faʻaletau Paʻu o loʻo i ai foi lesona lelei ma le teuina o vailaʻau faʻasamoa pei o le faʻamamaina o lavalava o tagata mamaʻi.
Faalaua'itele,palasitika afifi ataE taua tele i le fanua o afifiina, ma e mafai ai e latou meatotino tulagaese ona faʻamalieina manaʻoga eseese.
Taimi o le meli: Mar-18-2025