{"id":3539,"date":"2026-09-05T03:12:24","date_gmt":"2026-09-05T03:12:24","guid":{"rendered":"https:\/\/sivite-machinery.com\/?p=3539"},"modified":"2026-09-07T01:07:05","modified_gmt":"2026-09-07T01:07:05","slug":"truc-vit-dun-tam-lot-cho-thu-cung","status":"publish","type":"post","link":"https:\/\/sivite-machinery.com\/vi\/pet-sheet-extrusion-screw\/","title":{"rendered":"Tr\u1ee5c v\u00edt \u0111\u00f9n t\u1ea5m PET: C\u00e1ch ch\u1ecdn t\u1ef7 s\u1ed1 L\/D"},"content":{"rendered":"
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L\u1ea7n \u0111\u1ea7u ti\u00ean nhi\u1ec1u ng\u01b0\u1eddi mua xem \u0110\u00f9n t\u1ea5m PET<\/strong><\/a> Khi quan s\u00e1t thi\u1ebft b\u1ecb, ng\u01b0\u1eddi ta nh\u1eadn th\u1ea5y r\u1eb1ng c\u00e1c m\u00e1y \u0111\u00f9n t\u1ea5m PET c\u1ee7a c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t kh\u00e1c nhau tr\u00f4ng kh\u00e1 gi\u1ed1ng nhau v\u1ec1 m\u1eb7t b\u00ean ngo\u00e0i \u2014 b\u1ed1 c\u1ee5c c\u1ee7a th\u00f9ng \u0111\u00f9n, khu\u00f4n \u0111\u00f9n v\u00e0 tr\u1ee5c l\u00e0m m\u00e1t \u0111\u1ec1u g\u1ea7n nh\u01b0 gi\u1ed1ng h\u1ec7t nhau. Tuy nhi\u00ean, khi nh\u00ecn v\u00e0o b\u00ean trong th\u00e0nh ph\u1ea7n c\u1ed1t l\u00f5i, \u0111\u00f3 l\u00e0 tr\u1ee5c v\u00edt \u0111\u00f9n t\u1ea5m PET, b\u1ea1n s\u1ebd th\u1ea5y r\u1eb1ng m\u1eb7c d\u00f9 t\u1ea5t c\u1ea3 \u0111\u1ec1u l\u00e0 \u2019t\u1ea5m PET\u201c, nh\u01b0ng thi\u1ebft k\u1ebf t\u1ef7 l\u1ec7 L\/D c\u1ee7a tr\u1ee5c v\u00edt l\u1ea1i ho\u00e0n to\u00e0n kh\u00e1c nhau \u0111\u1ed1i v\u1edbi PET nguy\u00ean sinh, RPET, CPET v\u00e0 t\u1ea5m PETG d\u00f9ng \u0111\u1ec3 \u0111\u00fac \u0111\u1ed3 n\u1ed9i th\u1ea5t. \u0110\u00e2y kh\u00f4ng ph\u1ea3i l\u00e0 s\u1ef1 l\u1ef1a ch\u1ecdn thi\u1ebft k\u1ebf t\u00f9y ti\u1ec7n c\u1ee7a c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t \u2014 m\u00e0 l\u00e0 do m\u1ed7i lo\u1ea1i v\u1eadt li\u1ec7u c\u00f3 c\u00e1c t\u00ednh ch\u1ea5t v\u1eadt l\u00fd kh\u00e1c nhau, v\u00e0 m\u00e1y \u0111\u00f9n ph\u1ea3i ki\u1ec3m so\u00e1t ch\u00ednh x\u00e1c bi\u1ec3u \u0111\u1ed3 nhi\u1ec7t \u0111\u1ed9 v\u00e0 th\u1eddi gian l\u01b0u gi\u1eef v\u1eadt li\u1ec7u trong qu\u00e1 tr\u00ecnh \u0111\u00f9n n\u00f3ng ch\u1ea3y \u0111\u1ec3 tr\u00e1nh c\u00e1c \u0111\u1ed1m k\u1ebft tinh, \u0111\u1ed9 b\u1ec1n k\u00e9m, \u1ed1 v\u00e0ng v\u00e0 b\u1ec1 m\u1eb7t x\u1ec9n m\u00e0u tr\u00ean t\u1ea5m th\u00e0nh ph\u1ea9m.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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T\u1ef7 l\u1ec7 L\/D c\u1ee7a tr\u1ee5c v\u00edt l\u00e0 g\u00ec, v\u00e0 t\u1ea1i sao n\u00f3 l\u1ea1i quy\u1ebft \u0111\u1ecbnh ch\u1ea5t l\u01b0\u1ee3ng qu\u00e1 tr\u00ecnh \u0111\u00f9n?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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T\u1ef7 s\u1ed1 L\/D c\u1ee7a tr\u1ee5c v\u00edt l\u00e0 t\u1ef7 l\u1ec7 gi\u1eefa chi\u1ec1u d\u00e0i l\u00e0m vi\u1ec7c hi\u1ec7u d\u1ee5ng v\u00e0 \u0111\u01b0\u1eddng k\u00ednh c\u1ee7a tr\u1ee5c v\u00edt \u2014 v\u00ed d\u1ee5, m\u1ed9t tr\u1ee5c v\u00edt c\u00f3 \u0111\u01b0\u1eddng k\u00ednh 90 mm v\u00e0 chi\u1ec1u d\u00e0i hi\u1ec7u d\u1ee5ng 3600 mm c\u00f3 t\u1ef7 s\u1ed1 L\/D l\u00e0 40:1. Con s\u1ed1 n\u00e0y c\u00f3 v\u1ebb ch\u1ec9 l\u00e0 m\u1ed9t th\u00f4ng s\u1ed1 h\u00ecnh h\u1ecdc \u0111\u01a1n gi\u1ea3n, nh\u01b0ng n\u00f3 quy\u1ebft \u0111\u1ecbnh tr\u1ef1c ti\u1ebfp th\u1eddi gian v\u1eadt li\u1ec7u \u0111\u01b0\u1ee3c gia nhi\u1ec7t, c\u1eaft v\u00e0 tr\u1ed9n b\u00ean trong tr\u1ee5c v\u00edt, c\u0169ng nh\u01b0 s\u1ed1 v\u00f9ng ki\u1ec3m so\u00e1t nhi\u1ec7t \u0111\u1ed9 \u0111\u1ed9c l\u1eadp m\u00e0 tr\u1ee5c v\u00edt c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c chia th\u00e0nh \u2014 \u0111i\u1ec1u m\u00e0 ch\u00fang ta th\u01b0\u1eddng g\u1ecdi l\u00e0 th\u1eddi gian l\u01b0u v\u00e0 \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a ki\u1ec3m so\u00e1t nhi\u1ec7t \u0111\u1ed9 theo t\u1eebng \u0111o\u1ea1n.
T\u1ef7 l\u1ec7 L\/D l\u1edbn h\u01a1n th\u01b0\u1eddng cho ph\u00e9p chia tr\u1ee5c v\u00edt th\u00e0nh nhi\u1ec1u v\u00f9ng gia nhi\u1ec7t v\u00e0 nh\u1ef1a h\u00f3a h\u01a1n, gi\u00fap c\u01b0\u1eddng \u0111\u1ed9 c\u1eaft v\u00e0 m\u1ee9c t\u0103ng nhi\u1ec7t \u0111\u1ed9 trong m\u1ed7i v\u00f9ng di\u1ec5n ra nh\u1eb9 nh\u00e0ng v\u00e0 d\u1ec5 ki\u1ec3m so\u00e1t h\u01a1n. T\u1ef7 s\u1ed1 L\/D nh\u1ecf h\u01a1n s\u1ebd t\u1eadp trung qu\u00e1 tr\u00ecnh d\u1ebbo h\u00f3a v\u00e0o \u00edt v\u00f9ng h\u01a1n, mang l\u1ea1i hi\u1ec7u su\u1ea5t cao h\u01a1n; tuy nhi\u00ean, n\u1ebfu v\u1eadt li\u1ec7u v\u1ed1n kh\u00f3 d\u1ebbo h\u00f3a h\u01a1n ho\u1eb7c ch\u1ee9a nhi\u1ec1u t\u1ea1p ch\u1ea5t, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn vi\u1ec7c d\u1ebbo h\u00f3a kh\u00f4ng ho\u00e0n to\u00e0n ho\u1eb7c hi\u1ec7n t\u01b0\u1ee3ng c\u1eaft qu\u00e1 m\u1ee9c c\u1ee5c b\u1ed9. \u0110\u00e2y ch\u00ednh l\u00e0 l\u00fd do t\u1ea1i sao thi\u1ebft k\u1ebf tr\u1ee5c v\u00edt l\u1ea1i c\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t \u0111\u00e1ng k\u1ec3 gi\u1eefa c\u00e1c M\u00e1y \u0111\u00f9n t\u1ea5m PET<\/strong><\/a> x\u1eed l\u00fd c\u00e1c lo\u1ea1i v\u1eadt li\u1ec7u kh\u00e1c nhau \u2014 m\u1ee5c ti\u00eau c\u1ed1t l\u00f5i l\u00e0 s\u1eed d\u1ee5ng t\u1ef7 l\u1ec7 L\/D v\u00e0 ph\u01b0\u01a1ng \u00e1n \u0111i\u1ec1u khi\u1ec3n nhi\u1ec7t \u0111\u1ed9 theo t\u1eebng \u0111o\u1ea1n ph\u00f9 h\u1ee3p nh\u1ea5t v\u1edbi c\u00e1c t\u00ednh ch\u1ea5t v\u1eadt l\u00fd c\u1ee7a t\u1eebng lo\u1ea1i v\u1eadt li\u1ec7u, \u0111\u1ed3ng th\u1eddi ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng qu\u00e1 tr\u00ecnh h\u00f3a d\u1ebbo v\u00e0 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh nhi\u1ec7t.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Nh\u1eefng khuy\u1ebft t\u1eadt n\u00e0o tr\u00ean t\u1ea5m kim lo\u1ea1i l\u00e0 do th\u1eddi gian l\u01b0u kh\u00f4ng \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t t\u1ed1t g\u00e2y ra?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Qu\u00e1 tr\u00ecnh d\u1ebbo h\u00f3a kh\u00f4ng ho\u00e0n to\u00e0n: C\u00e1c v\u00f9ng k\u1ebft tinh<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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N\u1ebfu t\u1ef7 l\u1ec7 L\/D c\u1ee7a tr\u1ee5c v\u00edt kh\u00f4ng ph\u00f9 h\u1ee3p v\u1edbi m\u1ee9c \u0111\u1ed9 kh\u00f3 h\u00f3a d\u1ebbo c\u1ee7a v\u1eadt li\u1ec7u, ho\u1eb7c thi\u1ebft k\u1ebf \u0111i\u1ec1u khi\u1ec3n nhi\u1ec7t \u0111\u1ed9 theo t\u1eebng \u0111o\u1ea1n kh\u00f4ng \u0111\u00e1p \u1ee9ng y\u00eau c\u1ea7u, c\u00e1c h\u1ea1t PET c\u00f3 th\u1ec3 xu\u1ea5t hi\u1ec7n nh\u1eefng v\u00f9ng c\u1ee5c b\u1ed9 kh\u00f4ng \u0111\u01b0\u1ee3c nung ch\u1ea3y ho\u00e0n to\u00e0n trong qu\u00e1 tr\u00ecnh gia c\u00f4ng. C\u00e1c h\u1ea1t ch\u01b0a tan ch\u1ea3y n\u00e0y s\u1ebd t\u1ea1o th\u00e0nh c\u00e1c \u0111\u1ed1m tinh th\u1ec3 c\u00f3 th\u1ec3 nh\u00ecn th\u1ea5y khi t\u1ea5m nh\u1ef1a ngu\u1ed9i \u0111i \u2014 \u0111\u00e2y kh\u00f4ng ch\u1ec9 l\u00e0 v\u1ea5n \u0111\u1ec1 v\u1ec1 th\u1ea9m m\u1ef9, m\u00e0 c\u00f2n l\u00e0 \u0111i\u1ec3m t\u1eadp trung \u1ee9ng su\u1ea5t l\u00e0m gi\u1ea3m \u0111\u1ed9 b\u1ec1n c\u01a1 h\u1ecdc t\u1ed5ng th\u1ec3 c\u1ee7a t\u1ea5m nh\u1ef1a.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Qu\u00e1 tr\u00ecnh bi\u1ebfn \u0111\u1ed5i nhi\u1ec7t kh\u00f4ng \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t: V\u00e0ng \u1ed1, gi\u1ea3m \u0111\u1ed9 d\u1ebbo dai, b\u1ec1 m\u1eb7t x\u1ec9n m\u00e0u<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Ng\u01b0\u1ee3c l\u1ea1i, n\u1ebfu vi\u1ec7c \u0111i\u1ec1u khi\u1ec3n nhi\u1ec7t \u0111\u1ed9 theo t\u1eebng \u0111o\u1ea1n v\u00e0 c\u01b0\u1eddng \u0111\u1ed9 c\u1eaft kh\u00f4ng \u0111\u01b0\u1ee3c tinh ch\u1ec9nh ph\u00f9 h\u1ee3p v\u1edbi \u0111\u1ed9 nh\u1ea1y nhi\u1ec7t c\u1ee7a v\u1eadt li\u1ec7u, v\u00e0 v\u1eadt li\u1ec7u b\u1ecb gi\u1eef l\u1ea1i qu\u00e1 l\u00e2u ho\u1eb7c ch\u1ecbu l\u1ef1c c\u1eaft qu\u00e1 m\u1ee9c trong v\u00f9ng nhi\u1ec7t \u0111\u1ed9 cao c\u1ee5c b\u1ed9, PET s\u1ebd b\u1ecb ph\u00e2n h\u1ee7y nhi\u1ec7t \u2014 bi\u1ec3u hi\u1ec7n qua hi\u1ec7n t\u01b0\u1ee3ng ng\u1ea3 v\u00e0ng, gi\u1ea3m \u0111\u1ed9 b\u1ec1n do s\u1ef1 \u0111\u1ee9t g\u00e3y chu\u1ed7i ph\u00e2n t\u1eed, v\u00e0 b\u1ec1 m\u1eb7t tr\u1edf n\u00ean x\u1ec9n m\u00e0u r\u00f5 r\u1ec7t. PET l\u00e0 m\u1ed9t lo\u1ea1i v\u1eadt li\u1ec7u polyester kh\u00e1 nh\u1ea1y c\u1ea3m v\u1edbi l\u1ecbch s\u1eed nhi\u1ec7t, v\u00e0 qu\u00e1 tr\u00ecnh ph\u00e2n h\u1ee7y s\u1ebd t\u0103ng t\u1ed1c \u0111\u00e1ng k\u1ec3 khi v\u1eadt li\u1ec7u b\u1ecb gi\u1eef l\u1ea1i \u1edf nhi\u1ec7t \u0111\u1ed9 tr\u00ean kho\u1ea3ng 270\u00b0C t\u1ea1i m\u1ed9t v\u00f9ng c\u1ee5c b\u1ed9.
B\u1edfi v\u00ec hai lo\u1ea1i khuy\u1ebft t\u1eadt n\u00e0y t\u01b0\u01a1ng \u1ee9ng v\u1edbi hai v\u1ea5n \u0111\u1ec1 tr\u00e1i ng\u01b0\u1ee3c nhau \u2014 \u201cqu\u00e1 tr\u00ecnh d\u1ebbo h\u00f3a kh\u00f4ng \u0111\u1ee7\u201d so v\u1edbi \u201cl\u1ecbch s\u1eed nhi\u1ec7t c\u1ee5c b\u1ed9 m\u1ea5t ki\u1ec3m so\u00e1t\u201d \u2014 t\u1ef7 l\u1ec7 L\/D c\u1ee7a tr\u1ee5c v\u00edt v\u00e0 thi\u1ebft k\u1ebf v\u00f9ng ph\u1ea3i \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh ch\u00ednh x\u00e1c sao cho ph\u00f9 h\u1ee3p v\u1edbi h\u00e0nh vi n\u00f3ng ch\u1ea3y c\u1ee7a t\u1eebng lo\u1ea1i v\u1eadt li\u1ec7u c\u1ee5 th\u1ec3, thay v\u00ec \u0111\u01a1n gi\u1ea3n h\u00f3a quy\u1ebft \u0111\u1ecbnh th\u00e0nh m\u1ed9t ti\u00eau ch\u00ed duy nh\u1ea5t nh\u01b0 \u201cd\u00e0i h\u01a1n lu\u00f4n an to\u00e0n h\u01a1n\u201d hay \u201cng\u1eafn h\u01a1n lu\u00f4n an to\u00e0n h\u01a1n.\u201d<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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C\u00e1c th\u00f4ng s\u1ed1 t\u1ef7 l\u1ec7 L\/D c\u1ee7a v\u00edt SIVITE, d\u1ef1a tr\u00ean h\u01a1n m\u1ed9t th\u1eadp k\u1ef7 th\u1eed nghi\u1ec7m<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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V\u1edbi t\u01b0 c\u00e1ch l\u00e0 nh\u00e0 s\u1ea3n xu\u1ea5t chuy\u00ean v\u1ec1 thi\u1ebft k\u1ebf tr\u1ee5c v\u00edt cho m\u00e1y \u0111\u00f9n t\u1ea5m PET, nh\u00e0 s\u1ea3n xu\u1ea5t m\u00e1y \u0111\u00f9n t\u1ea5m SIVITE \u0111\u00e3 d\u00e0nh h\u01a1n m\u1ed9t th\u1eadp k\u1ef7 th\u1ef1c hi\u1ec7n c\u00e1c th\u1eed nghi\u1ec7m th\u1ef1c t\u1ebf quy m\u00f4 l\u1edbn tr\u00ean c\u00e1c lo\u1ea1i nguy\u00ean li\u1ec7u PET\/APET nguy\u00ean ch\u1ea5t, RPET, CPET v\u00e0 PETG, t\u1eeb \u0111\u00f3 d\u1ea7n d\u1ea7n x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c b\u1ed9 th\u00f4ng s\u1ed1 t\u1ef7 l\u1ec7 L\/D mang l\u1ea1i ch\u1ea5t l\u01b0\u1ee3ng t\u1ea5m \u1ed5n \u0111\u1ecbnh nh\u1ea5t. C\u00e1c con s\u1ed1 n\u00e0y kh\u00f4ng ph\u1ea3i l\u00e0 k\u1ebft qu\u1ea3 t\u00ednh to\u00e1n l\u00fd thuy\u1ebft \u2014 ch\u00fang l\u00e0 k\u1ebft qu\u1ea3 c\u1ee7a qu\u00e1 tr\u00ecnh x\u00e1c nh\u1eadn l\u1eb7p \u0111i l\u1eb7p l\u1ea1i d\u1ef1a tr\u00ean d\u1eef li\u1ec7u s\u1ea3n xu\u1ea5t th\u1ef1c t\u1ebf:<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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1. PET\/APET nguy\u00ean ch\u1ea5t: T\u1ef7 l\u1ec7 L\/D 40:1<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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H\u1ea1t nh\u1ef1a PET nguy\u00ean sinh ho\u1eb7c APET c\u00f3 c\u00e1c t\u00ednh ch\u1ea5t v\u1eadt l\u00fd \u0111\u1ed3ng nh\u1ea5t c\u00f9ng h\u00e0m l\u01b0\u1ee3ng \u0111\u1ed9 \u1ea9m v\u00e0 t\u1ea1p ch\u1ea5t th\u1ea5p. SIVITE s\u1eed d\u1ee5ng t\u1ef7 l\u1ec7 L\/D l\u00e0 40:1, k\u1ebft h\u1ee3p v\u1edbi nhi\u1ec1u v\u00f9ng ki\u1ec3m so\u00e1t nhi\u1ec7t \u0111\u1ed9 ri\u00eang bi\u1ec7t, gi\u00fap qu\u00e1 tr\u00ecnh l\u00e0m d\u1ebbo di\u1ec5n ra nh\u1eb9 nh\u00e0ng v\u00e0 tri\u1ec7t \u0111\u1ec3 h\u01a1n \u2014 v\u1eeba duy tr\u00ec \u0111\u1ed9 trong su\u1ed1t v\u00e0 \u0111\u1ed9 b\u00f3ng c\u1ee7a t\u1ea5m nh\u1ef1a, v\u1eeba \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m \u1ed5n \u0111\u1ecbnh.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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2. RPET: T\u1ef7 l\u1ec7 L\/D 48:1 (c\u00f3 v\u00f9ng kh\u1eed kh\u00ed)<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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PET t\u00e1i ch\u1ebf (RPET) c\u00f3 h\u00e0m l\u01b0\u1ee3ng \u0111\u1ed9 \u1ea9m, t\u1ea1p ch\u1ea5t v\u00e0 \u0111\u1ed9 dao \u0111\u1ed9ng ch\u1ec9 s\u1ed1 IV cao h\u01a1n, khi\u1ebfn qu\u00e1 tr\u00ecnh h\u00f3a d\u1ebbo tr\u1edf n\u00ean kh\u00f3 kh\u0103n h\u01a1n \u0111\u00e1ng k\u1ec3 \u2014 \u0111\u1ed3ng th\u1eddi c\u0169ng \u0111\u00f2i h\u1ecfi ph\u1ea3i lo\u1ea1i b\u1ecf \u0111\u1ed9 \u1ea9m v\u00e0 c\u00e1c ch\u1ea5t bay h\u01a1i ph\u00e2n t\u1eed th\u1ea5p trong qu\u00e1 tr\u00ecnh \u0111\u00f9n. SIVITE s\u1eed d\u1ee5ng t\u1ef7 l\u1ec7 L\/D l\u00e0 48:1 cho RPET, k\u00e8m theo khu v\u1ef1c kh\u1eed kh\u00ed ch\u00e2n kh\u00f4ng chuy\u00ean d\u1ee5ng \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p s\u1eb5n, \u0111\u1ea3m b\u1ea3o qu\u00e1 tr\u00ecnh nh\u1ef1a h\u00f3a tri\u1ec7t \u0111\u1ec3 \u0111\u1ed3ng th\u1eddi li\u00ean t\u1ee5c x\u1ea3 c\u00e1c ch\u1ea5t bay h\u01a1i \u0111\u1ec3 ng\u0103n ng\u1eeba b\u1ecdt kh\u00ed v\u00e0 khuy\u1ebft t\u1eadt m\u1edd tr\u00ean t\u1ea5m nh\u1ef1a.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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3. CPET: T\u1ef7 l\u1ec7 L\/D 34:1<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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CPET (PET k\u1ebft tinh) ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 s\u1ea3n xu\u1ea5t khay \u0111\u1ef1ng th\u1ef1c ph\u1ea9m ch\u1ecbu nhi\u1ec7t v\u00e0 h\u1ed9p \u0111\u1ef1ng an to\u00e0n khi s\u1eed d\u1ee5ng trong l\u00f2 n\u01b0\u1edbng. Y\u00eau c\u1ea7u \u0111\u1eb7c tr\u01b0ng c\u1ee7a lo\u1ea1i v\u1eadt li\u1ec7u n\u00e0y l\u00e0 t\u1ea5m th\u00e0nh ph\u1ea9m ph\u1ea3i c\u00f3 m\u1ee9c \u0111\u1ed9 k\u1ebft tinh \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t \u0111\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c nhi\u1ec7t khi h\u00e2m n\u00f3ng b\u1eb1ng l\u00f2 vi s\u00f3ng ho\u1eb7c l\u00f2 n\u01b0\u1edbng. SIVITE s\u1eed d\u1ee5ng t\u1ef7 l\u1ec7 L\/D l\u00e0 34:1 cho CPET, k\u1ebft h\u1ee3p v\u1edbi h\u1ec7 th\u1ed1ng ki\u1ec3m so\u00e1t nhi\u1ec7t \u0111\u1ed9 theo t\u1eebng \u0111o\u1ea1n ch\u00ednh x\u00e1c h\u01a1n, \u0111\u1ec3 v\u1eadt li\u1ec7u n\u00f3ng ch\u1ea3y tho\u00e1t ra kh\u1ecfi tr\u1ee5c v\u00edt \u1edf tr\u1ea1ng th\u00e1i nhi\u1ec7t ph\u00f9 h\u1ee3p v\u1edbi b\u01b0\u1edbc k\u1ebft tinh \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t ti\u1ebfp theo \u2014 t\u1eeb \u0111\u00f3 tr\u00e1nh \u0111\u01b0\u1ee3c l\u1ecbch s\u1eed nhi\u1ec7t qu\u00e1 cao ho\u1eb7c qu\u00e1 th\u1ea5p, g\u00e2y c\u1ea3n tr\u1edf qu\u00e1 tr\u00ecnh k\u1ebft tinh \u1ed5n \u0111\u1ecbnh.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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4. PETG: T\u1ef7 l\u1ec7 L\/D 32:1<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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PETG (PET bi\u1ebfn t\u00ednh b\u1eb1ng glycol) c\u00f3 \u0111\u01a1n v\u1ecb copolymer \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p trong c\u1ea5u tr\u00fac ph\u00e2n t\u1eed, khi\u1ebfn v\u1eadt li\u1ec7u n\u00e0y c\u00f3 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh nhi\u1ec7t t\u01b0\u01a1ng \u0111\u1ed1i th\u1ea5p h\u01a1n; do \u0111\u00f3, n\u00f3 th\u01b0\u1eddng \u0111\u01b0\u1ee3c gia c\u00f4ng \u1edf nhi\u1ec7t \u0111\u1ed9 th\u1ea5p h\u01a1n PET ti\u00eau chu\u1ea9n t\u1eeb 20\u201330\u00b0C \u2014 vi\u1ec7c gia c\u00f4ng trong th\u1eddi gian qu\u00e1 l\u00e2u d\u1ec5 d\u1eabn \u0111\u1ebfn s\u1ef1 ph\u00e2n h\u1ee7y nhi\u1ec7t. SIVITE \u00e1p d\u1ee5ng t\u1ef7 l\u1ec7 L\/D l\u00e0 32:1 cho PETG, k\u1ebft h\u1ee3p qu\u00e3ng \u0111\u01b0\u1eddng nh\u1ef1a h\u00f3a t\u01b0\u01a1ng \u0111\u1ed1i ng\u1eafn v\u1edbi nhi\u1ec7t \u0111\u1ed9 gia c\u00f4ng th\u1ea5p h\u01a1n \u0111\u1ec3 ki\u1ec3m so\u00e1t ch\u1eb7t ch\u1ebd th\u1eddi gian l\u01b0u tr\u00fa trong c\u00e1c v\u00f9ng nhi\u1ec7t \u0111\u1ed9 cao. Tham s\u1ed1 n\u00e0y \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c nh\u1eadn v\u00e0 c\u1ed1 \u0111\u1ecbnh th\u00f4ng qua d\u1eef li\u1ec7u s\u1ea3n xu\u1ea5t th\u1ef1c t\u1ebf r\u1ed9ng r\u00e3i tr\u00ean t\u1ea5m khu\u00f4n \u0111\u1ed3 n\u1ed9i th\u1ea5t PETG, gi\u00fap gi\u1ea3m \u0111\u00e1ng tin c\u1eady nguy c\u01a1 ph\u00e2n h\u1ee7y nhi\u1ec7t trong khi v\u1eabn \u0111\u1ea3m b\u1ea3o qu\u00e1 tr\u00ecnh h\u00f3a d\u1ebbo ho\u00e0n to\u00e0n.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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C\u00e1c s\u1ed1 li\u1ec7u tr\u00ean l\u00e0 c\u00e1c th\u00f4ng s\u1ed1 do SIVITE khuy\u1ebfn ngh\u1ecb, \u0111\u01b0\u1ee3c t\u1ed5ng h\u1ee3p t\u1eeb d\u1eef li\u1ec7u th\u1eed nghi\u1ec7m th\u1ef1c t\u1ebf trong h\u01a1n m\u1ed9t th\u1eadp k\u1ef7. T\u1ef7 l\u1ec7 L\/D th\u1ef1c t\u1ebf c\u1ea7n \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh th\u00eam d\u1ef1a tr\u00ean c\u00f4ng su\u1ea5t c\u1ee5 th\u1ec3 c\u1ee7a thi\u1ebft b\u1ecb, gi\u00e1 tr\u1ecb IV c\u1ee7a nguy\u00ean li\u1ec7u th\u00f4 v\u00e0 c\u00e1c y\u00eau c\u1ea7u v\u1ec1 \u0111\u1ecbnh h\u00ecnh \u1edf c\u00f4ng \u0111o\u1ea1n sau.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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H\u01b0\u1edbng d\u1eabn mua h\u00e0ng: Nh\u1eefng c\u00e2u h\u1ecfi c\u1ea7n \u0111\u1eb7t ra tr\u01b0\u1edbc khi quy\u1ebft \u0111\u1ecbnh t\u1ef7 l\u1ec7 L\/D c\u1ee7a v\u00edt<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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\u25cf Nguy\u00ean li\u1ec7u ch\u00ednh c\u1ee7a qu\u00fd v\u1ecb l\u00e0 g\u00ec? Nguy\u00ean li\u1ec7u th\u00f4, nguy\u00ean li\u1ec7u t\u00e1i ch\u1ebf hay h\u1ed7n h\u1ee3p \u2014 v\u00e0 theo t\u1ef7 l\u1ec7 n\u00e0o \u2014 v\u00ec \u0111i\u1ec1u n\u00e0y quy\u1ebft \u0111\u1ecbnh m\u1ee9c \u0111\u1ed9 kh\u00f3 kh\u0103n trong qu\u00e1 tr\u00ecnh l\u00e0m d\u1ebbo v\u00e0 nhu c\u1ea7u kh\u1eed kh\u00ed
\u25cf Qu\u00fd c\u00f4ng ty c\u00f3 k\u1ebf ho\u1ea1ch s\u1ea3n xu\u1ea5t c\u00e1c lo\u1ea1i v\u1eadt li\u1ec7u chuy\u00ean d\u1ee5ng nh\u01b0 CPET hay PETG kh\u00f4ng? N\u1ebfu trong t\u01b0\u01a1ng lai c\u00f9ng m\u1ed9t d\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t c\u1ea7n x\u1eed l\u00fd nhi\u1ec1u lo\u1ea1i v\u1eadt li\u1ec7u kh\u00e1c nhau, xin vui l\u00f2ng x\u00e1c nh\u1eadn tr\u01b0\u1edbc v\u1edbi nh\u00e0 s\u1ea3n xu\u1ea5t xem tr\u1ee5c v\u00edt c\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh theo m\u00f4-\u0111un hay kh\u00f4ng, hay c\u1ea7n ph\u1ea3i s\u1eed d\u1ee5ng nhi\u1ec1u b\u1ed9 tr\u1ee5c v\u00edt kh\u00e1c nhau
\u25cf Y\u00eau c\u1ea7u v\u1ec1 ngo\u1ea1i quan v\u00e0 t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc c\u1ee7a t\u1ea5m s\u1ea3n ph\u1ea9m c\u1ee7a qu\u00fd v\u1ecb kh\u1eaft khe \u0111\u1ebfn m\u1ee9c n\u00e0o? Y\u00eau c\u1ea7u v\u1ec1 \u0111\u1ed9 trong su\u1ed1t, \u0111\u1ed9 b\u00f3ng v\u00e0 \u0111\u1ed9 b\u1ec1n c\u00e0ng cao th\u00ec t\u1ef7 l\u1ec7 L\/D v\u00e0 h\u1ec7 th\u1ed1ng ki\u1ec3m so\u00e1t nhi\u1ec7t \u0111\u1ed9 theo t\u1eebng \u0111o\u1ea1n c\u00e0ng c\u1ea7n ph\u1ea3i \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh sao cho ch\u00ednh x\u00e1c h\u01a1n<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"

The first time many buyers look at PET sheet extrusion equipment, they notice that different manufacturers’ PET sheet extruders look […]<\/p>\n","protected":false},"author":5,"featured_media":3540,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[37],"tags":[],"class_list":["post-3539","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-knowledge"],"yoast_head":"\nPET Sheet Extrusion Screw: How to Choose the L\/D Ratio<\/title>\n<meta name=\"description\" content=\"How should you choose a PET sheet extrusion screw L\/D ratio for virgin PET, RPET, CPET, and PETG? 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