(Air Trap \/ Gas Void \/ Bubble Defect)<\/em><\/p>\n ![L\u1ed7i l\u1ed7 kh\u00ed tr\u00ean b\u1ec1 m\u1eb7t s\u1ea3n ph\u1ea9m \u00e9p nh\u1ef1a]\n L\u1ed7 kh\u00ed<\/strong> l\u00e0 hi\u1ec7n t\u01b0\u1ee3ng xu\u1ea5t hi\u1ec7n c\u00e1c l\u1ed7 r\u1ed7ng, b\u1ecdt kh\u00ed ho\u1eb7c v\u1ebft l\u00f5m<\/strong> b\u00ean trong ho\u1eb7c tr\u00ean b\u1ec1 m\u1eb7t s\u1ea3n ph\u1ea9m \u00e9p nh\u1ef1a. L\u1ed7i n\u00e0y \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn \u0111\u1ed9 b\u1ec1n c\u01a1 h\u1ecdc, th\u1ea9m m\u1ef9 v\u00e0 \u0111\u1ed9 k\u00edn c\u1ee7a s\u1ea3n ph\u1ea9m<\/strong>.<\/p>\n Xu\u1ea5t hi\u1ec7n l\u1ed7 tr\u00f2n ho\u1eb7c oval<\/strong> tr\u00ean b\u1ec1 m\u1eb7t s\u1ea3n ph\u1ea9m<\/p>\n<\/li>\n B\u1ec1 m\u1eb7t c\u00f3 v\u1ebft l\u00f5m nh\u1eb9<\/strong>, b\u00ean trong r\u1ed7ng<\/p>\n<\/li>\n Khi c\u1eaft s\u1ea3n ph\u1ea9m th\u1ea5y b\u1ecdt kh\u00ed b\u00ean trong<\/strong><\/p>\n<\/li>\n Th\u01b0\u1eddng xu\u1ea5t hi\u1ec7n \u1edf:<\/p>\n Th\u00e0nh d\u00e0y<\/p>\n<\/li>\n G\u00f3c bo<\/p>\n<\/li>\n V\u00f9ng cu\u1ed1i d\u00f2ng ch\u1ea3y<\/p>\n<\/li>\n Khu v\u1ef1c xa c\u1ed5ng phun<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n Khu\u00f4n thi\u1ebfu r\u00e3nh tho\u00e1t kh\u00ed<\/strong><\/p>\n<\/li>\n R\u00e3nh tho\u00e1t kh\u00ed b\u1ecb:<\/p>\n T\u1eafc nh\u1ef1a<\/p>\n<\/li>\n B\u00e1m d\u1ea7u, b\u1ea9n<\/p>\n<\/li>\n<\/ul>\n<\/li>\n D\u00f2ng nh\u1ef1a bao v\u00e2y, kh\u00ed kh\u00f4ng tho\u00e1t k\u1ecbp<\/strong><\/p>\n<\/li>\n<\/ul>\n \ud83d\udc49 \u0110\u00e2y l\u00e0 nguy\u00ean nh\u00e2n ph\u1ed5 bi\u1ebfn nh\u1ea5t<\/strong><\/p>\n Nh\u1ef1a ch\u01b0a s\u1ea5y ho\u1eb7c s\u1ea5y ch\u01b0a \u0111\u1ee7 nhi\u1ec7t \/ th\u1eddi gian<\/strong><\/p>\n<\/li>\n \u0110\u1eb7c bi\u1ec7t v\u1edbi:<\/p>\n PA, PET, PC, ABS<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n \ud83d\udc49 H\u01a1i \u1ea9m b\u1ed1c h\u01a1i khi n\u00f3ng ch\u1ea3y \u2192 t\u1ea1o b\u1ecdt kh\u00ed<\/p>\n Nh\u1ef1a co r\u00fat khi ngu\u1ed9i<\/p>\n<\/li>\n Kh\u00f4ng \u0111\u01b0\u1ee3c b\u00f9 v\u1eadt li\u1ec7u k\u1ecbp th\u1eddi<\/p>\n<\/li>\n H\u00ecnh th\u00e0nh l\u1ed7 r\u1ed7ng b\u00ean trong (void)<\/strong><\/p>\n<\/li>\n<\/ul>\n Nh\u1ef1a b\u1ecb ph\u00e2n h\u1ee7y nh\u1eb9<\/strong>, sinh kh\u00ed<\/p>\n<\/li>\n \u0110\u1ed9 nh\u1edbt th\u1ea5p \u2192 cu\u1ed1n kh\u00ed v\u00e0o d\u00f2ng ch\u1ea3y<\/p>\n<\/li>\n<\/ul>\n Th\u00e0nh qu\u00e1 d\u00e0y<\/p>\n<\/li>\n Thay \u0111\u1ed5i \u0111\u1ed9 d\u00e0y \u0111\u1ed9t ng\u1ed9t<\/p>\n<\/li>\n G\u00f3c ch\u1ebft t\u00edch kh\u00ed<\/p>\n<\/li>\n<\/ul>\n Phun qu\u00e1 nhanh \u2192 cu\u1ed1n kh\u00ed<\/p>\n<\/li>\n Phun qu\u00e1 ch\u1eadm \u2192 nh\u1ef1a ngu\u1ed9i s\u1edbm, kh\u00ed b\u1ecb k\u1eb9t<\/p>\n<\/li>\n<\/ul>\n \u274c Gi\u1ea3m \u0111\u1ed9 b\u1ec1n c\u01a1 h\u1ecdc B\u1ed5 sung ho\u1eb7c l\u00e0m s\u1ea1ch r\u00e3nh tho\u00e1t kh\u00ed<\/strong><\/p>\n<\/li>\n \u0110\u1ed9 s\u00e2u r\u00e3nh tho\u00e1t kh\u00ed tham kh\u1ea3o:<\/p>\n PP, PE: 0.02 \u2013 0.04 mm<\/p>\n<\/li>\n ABS, PS: 0.01 \u2013 0.02 mm<\/p>\n<\/li>\n<\/ul>\n<\/li>\n \u0110\u1eb7t r\u00e3nh tho\u00e1t kh\u00ed t\u1ea1i:<\/p>\n Cu\u1ed1i d\u00f2ng ch\u1ea3y<\/p>\n<\/li>\n V\u1ecb tr\u00ed d\u1ec5 t\u00edch kh\u00ed<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n S\u1ea5y nh\u1ef1a \u0111\u00fang ti\u00eau chu\u1ea9n:<\/p>\n Nhi\u1ec7t \u0111\u1ed9<\/p>\n<\/li>\n Th\u1eddi gian<\/p>\n<\/li>\n<\/ul>\n<\/li>\n Ki\u1ec3m tra \u0111\u1ed9 \u1ea9m nguy\u00ean li\u1ec7u<\/p>\n<\/li>\n Kh\u00f4ng tr\u1ed9n nh\u1ef1a t\u00e1i ch\u1ebf qu\u00e1 t\u1ef7 l\u1ec7 cho ph\u00e9p<\/p>\n<\/li>\n<\/ul>\n T\u0103ng \u00e1p su\u1ea5t gi\u1eef<\/strong><\/p>\n<\/li>\n K\u00e9o d\u00e0i th\u1eddi gian gi\u1eef<\/strong><\/p>\n<\/li>\n Gi\u1ea3m nhi\u1ec7t \u0111\u1ed9 nh\u1ef1a n\u1ebfu qu\u00e1 cao<\/p>\n<\/li>\n \u0110i\u1ec1u ch\u1ec9nh t\u1ed1c \u0111\u1ed9 phun theo t\u1eebng giai \u0111o\u1ea1n<\/p>\n<\/li>\n<\/ul>\n Gi\u1ea3m ch\u00eanh l\u1ec7ch \u0111\u1ed9 d\u00e0y<\/p>\n<\/li>\n Bo g\u00f3c h\u1ee3p l\u00fd<\/p>\n<\/li>\n Tr\u00e1nh v\u00f9ng t\u00edch kh\u00ed<\/p>\n<\/li>\n<\/ul>\n
\n1. D\u1ea5u hi\u1ec7u nh\u1eadn bi\u1ebft l\u1ed7i l\u1ed7 kh\u00ed<\/h2>\n
\n
\n
\n2. Nguy\u00ean nh\u00e2n g\u00e2y l\u1ed7i l\u1ed7 kh\u00ed trong \u00e9p nh\u1ef1a<\/h2>\n
2.1. Kh\u00ed b\u1ecb k\u1eb9t trong l\u00f2ng khu\u00f4n (Air Trap)<\/h3>\n
\n
\n
\n2.2. Nh\u1ef1a b\u1ecb \u1ea9m (Moisture in Resin)<\/h3>\n
\n
\n
\n2.3. \u00c1p su\u1ea5t gi\u1eef kh\u00f4ng \u0111\u1ee7 (Holding Pressure th\u1ea5p)<\/h3>\n
\n
\n2.4. Nhi\u1ec7t \u0111\u1ed9 nh\u1ef1a qu\u00e1 cao<\/h3>\n
\n
\n2.5. Thi\u1ebft k\u1ebf s\u1ea3n ph\u1ea9m kh\u00f4ng h\u1ee3p l\u00fd<\/h3>\n
\n
\n2.6. T\u1ed1c \u0111\u1ed9 phun kh\u00f4ng ph\u00f9 h\u1ee3p<\/h3>\n
\n
\n3. \u1ea2nh h\u01b0\u1edfng c\u1ee7a l\u1ed7i l\u1ed7 kh\u00ed<\/h2>\n
\n\u274c D\u1ec5 n\u1ee9t v\u1ee1 khi l\u1eafp r\u00e1p
\n\u274c M\u1ea5t th\u1ea9m m\u1ef9
\n\u274c Kh\u00f4ng \u0111\u1ea1t ti\u00eau chu\u1ea9n k\u1ef9 thu\u1eadt
\n\u274c T\u0103ng t\u1ef7 l\u1ec7 h\u00e0ng l\u1ed7i \u2013 ph\u1ebf ph\u1ea9m<\/p>\n
\n4. Gi\u1ea3i ph\u00e1p kh\u1eafc ph\u1ee5c l\u1ed7i l\u1ed7 kh\u00ed<\/h2>\n
4.1. C\u1ea3i thi\u1ec7n khu\u00f4n \u00e9p<\/h3>\n
\n
\n
\n
\n4.2. Ki\u1ec3m so\u00e1t v\u1eadt li\u1ec7u nh\u1ef1a<\/h3>\n
\n
\n
\n4.3. \u0110i\u1ec1u ch\u1ec9nh th\u00f4ng s\u1ed1 \u00e9p<\/h3>\n
\n
\n4.4. T\u1ed1i \u01b0u thi\u1ebft k\u1ebf s\u1ea3n ph\u1ea9m<\/h3>\n
\n
\n5. Ph\u00e2n bi\u1ec7t l\u1ed7 kh\u00ed v\u00e0 v\u1ebft ch\u00e1y (Burn Mark)<\/h2>\n