m\u00e0ng PEVA<\/a><\/span> c\u00f3 nh\u1eefng khuy\u1ebft \u0111i\u1ec3m nh\u01b0 d\u1ec5 t\u00edch t\u1ee5 t\u0129nh \u0111i\u1ec7n v\u00e0 kh\u00f4ng c\u00f3 kh\u1ea3 n\u0103ng b\u1ecbt k\u00edn nhi\u1ec7t. Trong d\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t t\u1ed1c \u0111\u1ed9 cao, m\u00e0ng BOPP d\u1ec5 b\u1ecb t\u0129nh \u0111i\u1ec7n, do \u0111\u00f3 c\u1ea7n ph\u1ea3i l\u1eafp b\u1ed9 kh\u1eed t\u0129nh \u0111i\u1ec7n.<\/span><\/p>\n \u0110\u1ec3 c\u00f3 \u0111\u01b0\u1ee3c m\u00e0ng BOPP c\u00f3 th\u1ec3 h\u00e0n nhi\u1ec7t, c\u00f3 th\u1ec3 ph\u1ee7 keo nh\u1ef1a nhi\u1ec7t nh\u01b0 cao su PVDC, cao su EVA…tr\u00ean b\u1ec1 m\u1eb7t c\u1ee7a m\u00e0ng BOPP sau khi x\u1eed l\u00fd corona, keo dung m\u00f4i c\u0169ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ph\u1ee7 v\u00e0 l\u1edbp ph\u1ee7 \u00e9p \u0111\u00f9n ho\u1eb7c Ph\u01b0\u01a1ng ph\u00e1p \u0111\u1ed3ng \u0111\u00f9n v\u00e0 k\u1ebft h\u1ee3p t\u1ea1o ra m\u00e0ng BOPP c\u00f3 th\u1ec3 h\u00e0n nhi\u1ec7t. B\u1ed9 phim \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong bao b\u00ec b\u00e1nh m\u00ec, qu\u1ea7n \u00e1o, gi\u00e0y d\u00e9p v\u00e0 t\u1ea5t, c\u0169ng nh\u01b0 bao b\u00ec b\u00eca c\u1ee7a thu\u1ed1c l\u00e1 v\u00e0 s\u00e1ch.<\/span><\/p>\n \u0110\u1ed9 b\u1ec1n x\u00e9 g\u00e2y ra c\u1ee7a m\u00e0ng BOPP \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n sau khi k\u00e9o c\u0103ng, nh\u01b0ng \u0111\u1ed9 b\u1ec1n x\u00e9 th\u1ee9 c\u1ea5p r\u1ea5t th\u1ea5p, do \u0111\u00f3 kh\u00f4ng \u0111\u01b0\u1ee3c \u0111\u1ec3 l\u1ea1i v\u1ebft c\u1eaft tr\u00ean c\u1ea3 hai \u0111\u1ea7u c\u1ee7a m\u00e0ng BOPP, n\u1ebfu kh\u00f4ng m\u00e0ng BOPP s\u1ebd d\u1ec5 b\u1ecb r\u00e1ch trong qu\u00e1 tr\u00ecnh in v\u00e0 c\u00e1n. Sau khi BOPP \u0111\u01b0\u1ee3c ph\u1ee7 b\u1eb1ng l\u1edbp keo t\u1ef1 d\u00ednh, c\u00f3 th\u1ec3 s\u1ea3n xu\u1ea5t b\u0103ng keo ni\u00eam phong, \u0111\u00e2y l\u00e0 th\u1ecb tr\u01b0\u1eddng c\u00f3 l\u01b0\u1ee3ng BOPP l\u1edbn.\u00a0<\/span><\/p>\nM\u00e0ng BOPP c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p m\u00e0ng \u1ed1ng ho\u1eb7c ph\u01b0\u01a1ng ph\u00e1p m\u00e0ng ph\u1eb3ng. C\u00e1c t\u00ednh ch\u1ea5t c\u1ee7a m\u00e0ng BOPP thu \u0111\u01b0\u1ee3c b\u1eb1ng c\u00e1c ph\u01b0\u01a1ng ph\u00e1p x\u1eed l\u00fd kh\u00e1c nhau l\u00e0 kh\u00e1c nhau. M\u00e0ng BOPP \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t theo ph\u01b0\u01a1ng ph\u00e1p m\u00e0ng ph\u1eb3ng c\u00f3 h\u1ec7 s\u1ed1 gi\u00e3n l\u1edbn (l\u00ean \u0111\u1ebfn 8 – 10) n\u00ean \u0111\u1ed9 b\u1ec1n cao h\u01a1n so v\u1edbi ph\u01b0\u01a1ng ph\u00e1p m\u00e0ng \u1ed1ng, \u0111\u1ed3ng th\u1eddi \u0111\u1ed9 \u0111\u1ed3ng \u0111\u1ec1u c\u1ee7a \u0111\u1ed9 d\u00e0y m\u00e0ng c\u0169ng t\u1ed1t h\u01a1n.<\/span><\/p>\n\u0110\u1ec3 c\u00f3 \u0111\u01b0\u1ee3c hi\u1ec7u su\u1ea5t t\u1ed5ng th\u1ec3 t\u1ed1t h\u01a1n, n\u00f3 th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p gh\u00e9p nhi\u1ec1u l\u1edbp trong qu\u00e1 tr\u00ecnh s\u1eed d\u1ee5ng. BOPP c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c k\u1ebft h\u1ee3p v\u1edbi nhi\u1ec1u v\u1eadt li\u1ec7u kh\u00e1c nhau \u0111\u1ec3 \u0111\u00e1p \u1ee9ng nhu c\u1ea7u c\u1ee7a c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u1eb7c bi\u1ec7t. V\u00ed d\u1ee5, BOPP c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c k\u1ebft h\u1ee3p v\u1edbi LDPE (CPP), PE, PT, PO, PVA…\u0111\u1ec3 c\u00f3 \u0111\u01b0\u1ee3c r\u00e0o c\u1ea3n kh\u00ed cao, r\u00e0o c\u1ea3n \u0111\u1ed9 \u1ea9m, \u0111\u1ed9 trong su\u1ed1t, kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t \u0111\u1ed9 cao v\u00e0 th\u1ea5p, kh\u1ea3 n\u0103ng ch\u1ed1ng n\u1ea5u \u0103n v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng d\u1ea7u. C\u00e1c m\u00e0ng composite kh\u00e1c nhau c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng cho th\u1ee9c \u0103n nhi\u1ec1u d\u1ea7u m\u1ee1.\u00a0<\/span><\/p>\n