纸基打包带的制备及其性能研究OA北大核心

This study used natural color softwood pulp as raw material,and improved the relevant strength properties of handsheets by add-ing papermaking additives such as polyamide epichlorohydrin(PAE),alkyl ketene dimer(AKD),cationic starch,and 70 ℃ water-soluble polyvinyl alcohol(PVA)fiber to prepare paper-based strapping tape(PST)with a basis weight of 120 g/m2 at the optimal beating degree(30 °SR),using a buckle free hot melt packaging machine to conduct heat sealing and bonding experiments on the PST.The effects of dry-ing temperatures,dosage of paper additives and 70 ℃ water-soluble PVA fibers on the physical properties,heat sealing temperature,heat sealing time,and heat sealing strength of PST were explored.The results showed that when the drying temperature was 95 ℃,the dosage of wet strength agent PAE was 2％,the dosage of sizing agent AKD was 0.3％,the dosage of cationic starch was 1.2％,the dosage of water-sol-uble PVA fiber at 70 ℃ was 15％,the heat sealing temperature was 165 ℃,and the heat sealing time was 6 s,the dry tensile index of PST reached 90.3 N·m/g,the wet tensile index reached 26.3 N·m/g,the tear index reached 19.6 mN·m2/g,the rupture index reached 6.45 kPa·m2/g,and the tensile strength at the heat seal was as high as 99.2 N·m/g.