Vanduo atsparumas sandarinimas juosta paprastai nurodo į į laipsnį įtaką iš vandens arba vandens garų in aplinkos on the savybių iš slėgiuijautrių klijų produktų. Jei yra nėra efektas at visi arba the efektas is mažas, the sandarinimas juosta is svarstoma to turi gerai arba gerai vanduo pasipriešinimas. Jei įtaka yra didelis arba puikus, it is laikoma as prastas arba labai vanduo pasipriešinimas. The decrease in performance is most due to the absorption of moisture by the packing tape in the water or steam environment.
For example, paper pressure-sensitive adhesive products in water or high temperature environment because of the paper substrate absorbed more water and the strength of the paper substrate decreased significantly, so that the tensile strength, shear strength, peel strength and other mechanical properties of pressure-sensitive adhesive products decreased significantly, and even the phenomenon of substrate fracture occurred during the test. Other pressure-sensitive adhesive products, especially sealing tapes made of emulsion pressure-sensitive adhesive, in water or high humidity environment will also change the viscosity of various pressure-sensitive adhesives due to the absorption of certain water by the pressure-sensitive adhesive layer. Generally, with the increase of water absorption, the holding viscosity decreases, and the initial adhesion and peeling strength first increases and then decreases. Visible water resistance is also a very important performance of pressure sensitive sealing tape.
Yra daug metodų į tyrimą ir charakterizuoti the water resistance of packing tape. The most common method is to directly measure the absorption rate, water pralaidumas ir vanduo garai pralaidumas of packing tape. In order to study and characterize the water resistance of the pressure-sensitive klijai, the water absorption and tirpumas of the pressure-sensitive stick can also be measured. Pradinis klampumas, 180 laipsnis lupimas stiprumas ir laikymas klampumas of the packing tape can also be measured with the change of smirkymas laikas in vanduo arba saugykla laikas in sotusis vanduo garai aplinka. Be to, the savybės of the slėgiui jautrūs klijai in skirtingi santykiniai drėgna aplinka gali būti ištirta ir išmatuota.