PP strap (polypropylene strap) li le titrime siwo tso 0.35mm va ɖo 0.80mm me, eye woƒe didime ɖesiaɖe sɔ ɖe agba tɔxɛ siwo hiã kple dɔwɔnu ƒomeviwo nu. Ka siwo le tsɛ wu (0.35–0.45mm) subɔa kakɛ siwo me kɔ kple e-asitsatsa ƒe nubablɛwo, gake tiatia siwo le kpekpem wu (0.65–0.80mm) ya kpɔa pallet kpekpewo kple dɔwɔƒewo ƒe agbawo gbɔ. Titrime kpɔa ŋusẽ ɖe gbagbã ƒe ŋusẽ, nutrenu ƒe dɔwɔwɔ, kple mɔ̃ ƒe nuɖuɖu ƒe kakaɖedzi dzi tẽ. Mɔfiame sia ɖe titrime ƒe tiatia siwo sɔ na PP strap, alesi titrime do ƒome kple break force, kple alesi nàtia nɔnɔme nyuitɔ na wò dɔwɔwɔ me.
Tiatiawɔwɔ le PP strapping grades dome kpɔa ŋusẽ ɖe ɣeyiɣi didi ƒe dɔwɔwɔ dzi wu alesi nuƒlela akpa gãtɔ nyae. Polypropylene ƒe ka si me ʋuʋudedi le ŋutɔ—si wowɔ tso aŋɔ si ƒe ʋeʋẽme le eme le 0.60 kple 0.95 dl/g dome—na molecule kɔsɔkɔsɔ ƒe didime si nyo wu, si wɔnɛ be woƒe tensile ŋusẽ si lolo wu, woƒe ʋuʋu ƒe tsitretsitsi nyuie wu, kple dɔwɔwɔ ƒe nuléle ɖe te nyuie wu le ɣeyiɣi aɖe megbe. Standard-grade PP strapping ate ŋu awɔ dɔ nyuie na ɣeyiɣi kpui alo dɔ bɔbɔe ƒe dɔwɔwɔ gake ate ŋu abu tete kabakaba le agba si nɔa anyi ɖaa te. Nyati sia tsɔ dzesi eveawo siaa sɔ kple wo nɔewo le molecule ƒe wɔwɔme, mɔ̃ɖaŋununya ƒe nɔnɔme, kple dɔwɔwɔ ɣeyiɣi didi me be wòakpe ɖe nuƒlelawo ŋu woatia nɔnɔme nyuitɔ.
Ka siwo wotsɔ blaa nu siwo wowɔna le wo ɖokui si bliboe bia be woatsɔ ka si ana nuɖuɖu kakaɖedzitɔe, atre nu ɣesiaɣi, eye wòalé masɔmasɔ me ɖe asi le duƒuƒu sesẽ me. PP strap (polypropylene strapping) nye nusi wolɔ̃na wu na automated carton kple pallet packaging dɔwɔwɔ akpa gãtɔ le eƒe asitɔtrɔ, didime ƒe ɖekawɔwɔ, kple ɖekawɔwɔ kple automatic strapping mɔ̃wo ta. Gake menye PP-kawo katãe wɔa dɔ sɔsɔe le dɔwɔnu siwo wowɔna le wo ɖokui si me o. Mɔ̃a ƒe nyonyome ƒe nɔnɔmewo, didime ƒe mɔɖeɖe ɖe nu ŋu sesĩe, kple eƒe ʋuʋu ɣesiaɣi le vevie na dɔwɔwɔ si ŋu kakaɖedzi le. Mɔfiame sia ɖe nusi na PP strap sɔ na bliboe automated packaging lines kple alesi woatia specification nyuitɔ.
Ðe PP-ka (polypropylene-ka) ƒe amadede kpɔa ŋusẽ ɖe eƒe nyonyome dzia? Esia nye nyabiase si bɔ ɖe nubablɛ ƒlelawo dome. Ŋuɖoɖo kpuia: amadede ŋutɔe afia eƒe nyonyome o, gake nusiwo wotsɔ kpe ɖe amadede aɖewo ŋu ate ŋu akpɔ ŋusẽ ɖe dɔwɔwɔ ƒe nɔnɔme tɔxɛwo dzi. Black PP strap zi geɖe naa UV tsitretsitsi si de ŋgɔ wu le carbon black additives ta, si wɔe be wòsɔ nyuie na gota dɔwɔwɔ. PP-ka siwo le amadede dzẽ kple ɣi me wɔa dɔ nyuie le xɔmenuwo kple nubablɛwo ƒe dɔwɔwɔwo me le afisiwo UV-ƒoƒo menye nu vevitɔ si ŋu wotsi dzi ɖo o. Mɔfiame sia ɖe ƒomedodo si le amadede, nusiwo wotsɔ kpe ɖe eŋu, kple dɔwɔwɔ dome me be wòakpe ɖe nuƒlelawo ŋu woatia ka nyuitɔ.