Chikwama cha pepala-pulasitiki

Nthawi zambiri pulasitiki wosanjikiza amapangidwa lathyathyathya nsalu nsalu ndi PP kapena PE ngati maziko maziko, ndipo kunja amapangidwa woyengeka woyera kraft pepala kapena yellow kraft pepala. Pepala la Kraft limapangidwa ndi pepala lopangidwa ndi gulu lapadera la kraft, lomwe lili ndi mawonekedwe amphamvu kwambiri, kukana madzi abwino komanso mawonekedwe okongola. Ndi imodzi mwazinthu zodziwika bwino zonyamula katundu ndipo imagwiritsidwa ntchito kwambiri muzakudya, zovala, mphatso ndi mafakitale ena. Matumba ophatikizika amatha kugawidwa m'matumba osindikizidwa kumbuyo, matumba osindikizidwa mbali zitatu, zikwama zamagulu, zikwama zoyimilira zipi, matumba osindikizidwa a mbali zinayi, matumba ooneka ngati apadera, etc.

Thumba loyimilira limapangidwa ndi PET/foil/PET/PE, ndipo limathanso kukhala ndi zina monga zigawo ziwiri ndi magawo atatu. Malinga ndi zinthu zosiyanasiyana zomwe zapakidwa, chotchinga chotchinga cha okosijeni chitha kuwonjezeredwa ngati pakufunika kuti muchepetse mpweya wa okosijeni ndikutalikitsa moyo wa alumali wazinthuzo.

Pamaziko a zikwama wamba zoyimilira, takhazikitsa thumba lapamwamba loyimilira pansi, lomwe lili ndi izi:

1. Mapangidwe oima, akhoza kuyima pa alumali youma, lalikululo ndi lathyathyathya, ndipo kuyimirira kumakhala kokhazikika.

2. Zowonjezera zipper zosindikizira zitha kuwonjezeredwa kuti mupewe zovuta zomwe mtundu wa thumba la chiwalo sungathe kuzipidwa.

3. Valve yotulutsa njira imodzi ikhoza kumangirizidwa, yomwe ingagwiritsidwe ntchito mu khofi ndi mafakitale ena okhudzana nawo.

4. The gulu flexible ma CD zakuthupi akhoza kuphatikizidwa kuti achite zosiyana zoipa chotchinga katundu mwa madzi ndi mpweya permeability zimatha zipangizo zosiyanasiyana.