Lub hauv paus tseem ceeb ntawm qhov chaw-cov nplaum nplaum siv rau hauv cov ntaub so ntswg yog Kub Melt Pressure-Sensitive Adhesive (HMPSA). Ntawm nws lub hauv paus, cov nplaum no muaj cov polymer-raws li system. Txawm hais tias qhov tshwj xeeb muaj pes tsawg leeg sib txawv nyob ntawm hom thiab kev ua tau zoo, nws feem ntau suav nrog cov hauv qab no:
Ethylene-Vinyl Acetate Copolymer (EVA): Cov khoom siv ntau tshaj plaws, muab kev yooj yim zoo, thermal stability, thiab kev sib khi lub zog, ua rau nws haum rau ntau- txheej lamination.
Styrene-Isoprene-Styrene Block Copolymer (SIS) los yog Styrene-Butadiene-Styrene (SBS): Cov no muab qhov pib tack thiab elasticity, ua rau lawv zoo tagnrho rau thaj chaw uas xav tau kev sib txuas yooj yim.
Tackifying Resins:
Xws li rosin resins, roj av resins, lossis terpene resins; cov no yog siv los txhim kho cov nplaum nplaum lub zog rau cov khoom siv-xws li cov ntaub ntawv uas tsis yog- woven fabrics thiab PE zaj duab xis- yog li ua kom lub hauv paus seam tseem ruaj khov.
Plasticizers
Ntxiv rau qhov me me-xws li phthalates (nyob rau hauv cov kev cai txwv) los yog eco- lwm txoj kev phooj ywg- los kho cov softness thiab saj zawg zog ntawm cov colloid, yog li tiv thaiv hardening thiab cracking.
Antioxidants thiab Stabilizers
Tiv thaiv oxidative degradation ntawm cov colloid thaum lub sij hawm siab -kub ua hauj lwm los yog lub sij hawm cia, yog li ua kom cov khoom lub neej txee thiab ua hauj lwm stability.