Ibiranga no gutondekanya imifuka ya EVA nagasanduku ka EVA

EVA ni ibikoresho bya pulasitike bigizwe na Ethylene (E) na vinyl acetate (VA). Ikigereranyo cyiyi miti yombi irashobora guhinduka kugirango ihuze ibyifuzo bitandukanye. Nibiri hejuru ya vinyl acetate (ibirimo VA), niko gukorera mu mucyo, ubworoherane no gukomera bizaba.

Ibiranga EVA na PEVA ni:

1. Ibinyabuzima bishobora kwangirika: Ntabwo bizangiza ibidukikije mugihe byajugunywe cyangwa byatwitse.

2. Bisa nigiciro cya PVC: EVA ihenze kuruta PVC yuburozi, ariko ihendutse kuruta PVC idafite phthalates.

3. Umucyo woroshye: Ubucucike bwa EVA buri hagati ya 0,91 na 0.93, naho ubwa PVC ni 1.32.

4. Impumuro nziza: EVA ntabwo irimo ammonia cyangwa izindi mpumuro nziza.

5. Ibyuma bidafite ibyuma biremereye: Byubahiriza amabwiriza mpuzamahanga yo gukinisha (EN-71 Igice cya 3 na ASTM-F963).

6. Fthalates idafite: Irakwiriye ibikinisho byabana kandi ntabwo bizatera ibyago byo kurekura plastike.

7. Gukorera mu mucyo, ubworoherane no gukomera: urwego rusaba ni rugari cyane.

8. Ubushyuhe bukabije bwo kurwanya ubushyuhe (-70C): bubereye ibidukikije.

9. Kurwanya amazi, umunyu nibindi bintu: birashobora kuguma bihamye mumubare munini wibisabwa.

10. Gufata ubushyuhe bwinshi: birashobora gufatanwa neza na nylon, polyester, canvas nibindi bitambara.

11. Ubushyuhe buke bwa lamination: bushobora kwihutisha umusaruro.

12. Irashobora kuba ecran yacapwe na offset yacapwe: irashobora gukoreshwa mubicuruzwa byiza (ariko bigomba gukoresha wino ya EVA).

Imirongo ya EVA, nkuko izina ribigaragaza, nigicuruzwa runaka cyashyizwe muriyi sanduku ya EVA, hanyuma hakenewe paki hanze, hanyuma umurongo wa EVA ugashyirwa muriyi paki. Iyi paki irashobora kuba agasanduku k'icyuma, cyangwa agasanduku k'ikarito yera cyangwa ikarito.

Itondekanya ryibikoresho bya EVA bipakira

Ibikoresho byo gupakira bya EVA bigabanijwemo ingingo zikurikira:

1. Ubucucike buke, ubucucike buke bwangiza ibidukikije EVA, umukara, umweru namabara.

2. Ubucucike bwinshi, ubwinshi bwibidukikije byangiza ibidukikije EVA, umukara, umweru namabara.

3. EVA ifunze selile dogere 28, dogere 33, dogere 38, dogere 42.

4. EVA ifungura selile dogere 25, dogere 38