Makhalidwe ndi magulu a matumba a EVA ndi mabokosi a EVA

EVA ndi pulasitiki yopangidwa ndi ethylene (E) ndi vinyl acetate (VA). Chiŵerengero cha mankhwala awiriwa chikhoza kusinthidwa kuti chikwaniritse zosowa zosiyanasiyana zogwiritsira ntchito. Zomwe zili mu vinyl acetate (VA zomwe zili pamwambazi), ndizomwe zimawonekera, kufewa ndi kulimba kwake kudzakhala.

Makhalidwe a EVA ndi PEVA ndi awa:

1. Zowonongeka: Sizidzawononga chilengedwe pamene zitatayidwa kapena kuwotchedwa.

2. Mofanana ndi mtengo wa PVC: EVA ndi yokwera mtengo kuposa PVC ya poizoni, koma yotsika mtengo kuposa PVC yopanda phthalates.

3. Opepuka: Kuchuluka kwa EVA kumachokera ku 0.91 mpaka 0.93, pamene PVC ndi 1.32.

4. Zopanda fungo: EVA ilibe ammonia kapena fungo linalake.

5. Zopanda zitsulo zolemera: Zimagwirizana ndi malamulo oyenerera padziko lonse lapansi (EN-71 Part 3 ndi ASTM-F963).

6. Zopanda Phthalates: Ndizoyenera zoseweretsa za ana ndipo sizingabweretse chiopsezo chotulutsa pulasitiki.

7. Kuwonekera kwakukulu, kufewa ndi kulimba: mawonekedwe ogwiritsira ntchito ndi ochuluka kwambiri.

8. Super otsika kutentha kukana (-70C): oyenera icing chilengedwe.

9. Kukaniza madzi, mchere ndi zinthu zina: akhoza kukhala okhazikika muzogwiritsidwa ntchito zambiri.

10. Kutentha kwakukulu: Kukhoza kumangirizidwa mwamphamvu ku nayiloni, poliyesitala, nsalu ndi nsalu zina.

11. Low lamination kutentha: akhoza kufulumizitsa kupanga.

12. Ikhoza kusindikizidwa ndi kusindikizidwa: ikhoza kugwiritsidwa ntchito pazinthu zapamwamba kwambiri (koma ziyenera kugwiritsa ntchito inki ya EVA).

Lining EVA, monga momwe dzinalo likusonyezera, ndi chinthu china chomwe chimayikidwa mu bokosi la EVA, ndiyeno phukusi likufunika kunja, ndipo nsalu ya EVA imayikidwa mu phukusili. Phukusili likhoza kukhala bokosi lachitsulo lachitsulo, kapena katoni yoyera kapena katoni.

Kugawika kwazinthu zamapangidwe a EVA

Kuyika kwa EVA kumagawidwa makamaka m'magawo awa:

1. Low osalimba, otsika kachulukidwe zachilengedwe wochezeka EVA, wakuda, woyera ndi mtundu.

2. Kuchuluka kwapamwamba, kachulukidwe kakang'ono kosamalira zachilengedwe EVA, wakuda, woyera ndi mtundu.

3. EVA anatseka selo 28 madigiri, 33 madigiri, 38 madigiri, 42 madigiri.

4. EVA yotsegula selo 25 madigiri, 38 madigiri