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???????? ????????: ??????: ??????? ??????????? ????? ????? ?????, ??????? ????? ?? ?????????? ???? ????????, ??????? ?????? ???? ??? ???????? ????? ????. ??????????: ?????? ??? ????????? ???? ?????? ????? ?? ???? ????????? ?????????? ????? ?????, ???? ???? ?? ???????????? ?????????? ???? ?????? ?????, ???? ??? ???????? ??? ?????. ??????? ?????? ???????: ?????? ?? ????? ?????????? ???????????? ???? ?????? ?????, ???? PVC ?????? ??? ???????? ????????, ?????????????? ??????? ???? ?????? ??????.
???? ???????? HPMC ?????? ???? ??? ?? PVC ??????????? ???????, ????? ????? ?????????? ??????????? ?????? ?? ?? ????? ?????? ?????, ??? ????? ????? ??????, ??????? ???? ?????? ?? ??????? ????? ?? ??????????? ???????? ? ??. ????? ????? ??????? ???, ????? ???????? ????????????? ?? ???????????? ???? ???????????? ???????? (PVA) ?? ?????????????????????? ???????????????? (HPMC) ????? ???? ????? ??? ????, ?? ???????? ?????? ??? ????? ?? ??? ?????????????? ??????? ? ??????????? ??.
