FOODQUALITYRUBBERSHEETascaulkingputty,water stop,cutwater materialsincontact with water,rapidswelling, whichfilledthegapspace,maintainahighdegreeoftightness.FOODQUALITYRUBBERSHEETwaterswelling rubberplateiswater swellableresinandsynthetic rubbermade??by variousprocesses,whenin contact with water, that is,uniform expansion,untilitswelled toseveraltimestheoriginal volume.FOODQUALITYRUBBERSHEETspecialsealing materialplugginginavarietyofcivil constructionin the early 1980s,theemergenceofa so-calledwater-swellingmaterial