Kev Paub Txog Tensile Orientation Ntawm Stretch Wound Films

Peb siv stretch winding zaj duab xis chaw tsim tshuaj paus cov khoom, haum rau ntau yam khoom ntim ntim thiab pallet ntim, tuaj yeem tiv thaiv kev thauj mus los ntawm kev tawg tawg, noo-pov thawj, plua plav-pov thawj, tiv thaiv tub sab, poob siab-pov thawj, muaj zog tiv thaiv.
Kev taw qhia nyob rau hauv tus txheej txheem ntawm winding zaj duab xis ntau lawm mas tshwm sim nyob rau hauv tus txheej txheem ntawm longitudinal thiab transverse stretching. Tom qab longitudinal stretching, uniaxial longitudinal orientation ntawm lub polymer saw zoo heev txhim kho lub longitudinal mechanical zog ntawm daim ntawv, thaum lub transverse zog yog txo. Tom qab txuas ntxiv rub tawm, cov saw hlau polymer yog biaxially oriented, uas tuaj yeem txhim kho kev ua haujlwm ntawm PE winding zaj duab xis. Txawm li cas los xij, thaum lub sij hawm preheating thiab transverse stretching, lub sij hawm so ntawm molecular saw yog luv vim qhov nce ntawm qhov kub thiab txias, uas yog qhov tsim nyog rau kev daws teeb meem. Ua ke nrog cov nyhuv ntawm transverse tensile quab yuam, longitudinal orientation ntawm molecular saw yuav raug txo mus rau ib qho twg, uas ua rau txo qis ntawm longitudinal thermal shrinkage ntawm zaj duab xis.
Txhawm rau tsim cov yeeb yaj kiab zoo tshaj plaws, nws yog ib qho tseem ceeb heev rau kev tswj cov txheej txheem tsis xws li qhov kub, qhov sib piv tensile thiab tensile tshaj tawm thaum lub sij hawm tus txheej txheem tensile orientation.