Tsiaj packing siv yog ib qho dav siv yas ib puag ncig tiv thaiv kev siv. Cov tsiaj ntim khoom siv tau ua nyob hauv Suav teb tau ntau tshaj 20 xyoo. Txij li thaum xyoo 2002, Tuam Tshoj' s thov rau tsiaj kaw tsiaj tau nce nyob rau hauv tus nqi txhua xyoo ntawm 500%. Nws tau siv dav hauv ntoo, ntawv, hlau, aluminium ingot, steel yeeb, profile, iav, cov ntaub ntawv tsev, ceramics, khoom siv hluav taws xob, khoom lag luam hlau, luam yeeb, tshuaj fiber, paj rwb thiab lwm yam lag luam. Lub cev pob tshab (opaque tom qab ntxiv kev tiv thaiv tus neeg saib xyuas), lub ntsej muag du lossis cov qauv prismatic. Cov khoom siv tseem ceeb ntawm cov tsiaj ntim khoom siv yog polyethylene terephthalate.
PP packing siv yog ib hom kev coj ntawm txoj siv sia (strapping siv). Nws yog ua los ntawm polyethylene, polypropylene cob, txias kuav los tiag sawb hlau yog cov khoom siv tseem ceeb, thiab nylon thiab polyester ua cov khoom raw. Nws yog tsim los ntawm extrusion unidirectional teeb duab thiab kub kho. Ntxiv rau kev siv rau kev sib khi thiab khi cov thawv ntawv uas muaj lub thawv ntawv sib xyaw, kub dov npib hlau txias thiab cov khaub thuas txias txias, nws kuj tuaj yeem siv rau cov ntawv ntim iav, kav dej, khoom siv, txiv hmab txiv ntoo, thiab lwm yam
Ob cov khoom siv sib txawv siv rau hauv cov khoom ntim khoom ntim, thiab tau nrov nyob hauv Suav teb tau 20 xyoo. Qhov ob hom kev ntim khoom tau muaj cov yam ntxwv sib txawv, yog li lawv tau siv rau hauv kev lag luam sib txawv. PET yas steel siv feem ntau siv los ntim cov khoom hnyav vim nws lub zog tensile, qis elongation, siab kub tiv thaiv, zoo kev nyab xeeb thiab lwm yam ntxwv, thaum PP ntim siv feem ntau ntim khoom muag lub teeb vim nws me me kev sib tsoo, tsawg tensile lub zog thiab ntev 'meter' ib qhov hnyav. Feem ntau, cov khoom siv hluav taws xob tau ntim rau hauv thawv.