Wet Strength Waterproof agent 

LSW-50 is new type wet strength agent of PPE (Polyamide Polyamine-Epichlorhydrin), it can be adsorbed on fibre in pulp, it can raise paper wet strength by forming thermo-setting resin and permanently fixed in fibre, after it reacts to fibre in dryer section.

Item	Index
Appearance	light yellow transparent liquid
Solid content %	12.5±0.5
Ionic properties	cationic
Viscosity	25-75 cps (25℃)
pH	4-7

The wet strength agent is water-soluble a-cationic thermo-setting resin. It is non –toxic, odourless and not one of polymer of formaldehyde. It is suitable to make paper under neutural and slightly alkalic as well as acidic condition. Moreover, it is much better than urea resin and melamin resin in the efficacy of application of the wet strength agent. Nowadays, it has been widely used in making dry and cleaning paper (banquet napkin, wet napkin, facial tissue, mirror cleaning paper, facial tissue; outdoor paper (kraft paper, wrapping paper, paster paper, project paper, altas paper, bag paper, seeding paper, fruit paper), packing material (paper cup, meat and fruit wrapping paper, tea paper);paper in wet material (autocopy paper, photo base paper, one –off paper for hospital, napkin for baby) and other special used paper(tobacco paper, banknote paper, invoice paper, archival paper).