{"id":56,"date":"2026-01-14T08:37:49","date_gmt":"2026-01-14T08:37:49","guid":{"rendered":"https:\/\/chungcu.blog\/?p=56"},"modified":"2026-01-14T08:37:49","modified_gmt":"2026-01-14T08:37:49","slug":"cach-tinh-chinh-xac-1kg-vai-bang-bao-nhieu-met-dua-tren-dinh-luong-gsm-2","status":"publish","type":"post","link":"https:\/\/chungcu.blog\/?p=56","title":{"rendered":"C\u00e1ch T\u00ednh Ch\u00ednh X\u00e1c 1kg V\u1ea3i B\u1eb1ng Bao Nhi\u00eau M\u00e9t D\u1ef1a Tr\u00ean \u0110\u1ecbnh L\u01b0\u1ee3ng GSM"},"content":{"rendered":"

\u0110\u1ec3 t\u00ednh ch\u00ednh x\u00e1c 1kg v\u1ea3i b\u1eb1ng bao nhi\u00eau m\u00e9t d\u1ef1a tr\u00ean \u0111\u1ecbnh l\u01b0\u1ee3ng GSM, s\u1eed d\u1ee5ng c\u00f4ng th\u1ee9c: \u0110\u1ed9 d\u00e0i (m\u00e9t) = (1000 gram \/ GSM) \u00d7 1000 \/ Chi\u1ec1u r\u1ed9ng v\u1ea3i (cm).<\/strong> <\/p>\n

C\u00f4ng th\u1ee9c n\u00e0y gi\u00fap x\u00e1c \u0111\u1ecbnh \u0111\u1ed9 d\u00e0i v\u1ea3i t\u1eeb tr\u1ecdng l\u01b0\u1ee3ng c\u1ed1 \u0111\u1ecbnh. <\/p>\n

V\u00ed d\u1ee5<\/strong>, v\u1edbi v\u1ea3i GSM 150 v\u00e0 r\u1ed9ng 150cm, \u0111\u1ed9 d\u00e0i kho\u1ea3ng 44,4 m\u00e9t. <\/p>\n

K\u1ebft qu\u1ea3 ph\u1ee5 thu\u1ed9c ch\u00ednh v\u00e0o GSM v\u00e0 chi\u1ec1u r\u1ed9ng, \u0111\u1ea3m b\u1ea3o t\u00ednh to\u00e1n ch\u00ednh x\u00e1c cho ng\u00e0nh may m\u1eb7c.<\/p>\n

Chi\u1ec1u r\u1ed9ng v\u1ea3i l\u00e0 y\u1ebfu t\u1ed1 quan tr\u1ecdng th\u1ee9 hai trong t\u00ednh to\u00e1n.<\/strong> <\/p>\n

Th\u01b0\u1eddng dao \u0111\u1ed9ng 140-160cm cho v\u1ea3i cu\u1ed9n ti\u00eau chu\u1ea9n. <\/p>\n

C\u1ee5 th\u1ec3<\/strong>, b\u1ecf qua chi\u1ec1u r\u1ed9ng d\u1eabn \u0111\u1ebfn sai l\u1ec7ch l\u1edbn, l\u00ean \u0111\u1ebfn 30%. <\/p>\n

Vi\u1ec7c \u0111o ch\u00ednh x\u00e1c gi\u00fap t\u1ed1i \u01b0u h\u00f3a nguy\u00ean li\u1ec7u s\u1ea3n xu\u1ea5t.<\/p>\n

GSM quy\u1ebft \u0111\u1ecbnh tr\u1ecdng l\u01b0\u1ee3ng tr\u00ean \u0111\u01a1n v\u1ecb di\u1ec7n t\u00edch, \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn \u0111\u1ed9 d\u00e0i.<\/strong> <\/p>\n

M\u1ee9c th\u1ea5p cho v\u1ea3i m\u1ecfng, cao cho v\u1ea3i d\u00e0y. <\/p>\n

Ngo\u00e0i ra<\/strong>, ki\u1ec3m tra nh\u00e3n v\u1ea3i ho\u1eb7c d\u00f9ng m\u00e1y \u0111o \u0111\u1ec3 l\u1ea5y gi\u00e1 tr\u1ecb GSM chu\u1ea9n. <\/p>\n

Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y \u00e1p d\u1ee5ng r\u1ed9ng r\u00e3i, gi\u00fap ti\u1ebft ki\u1ec7m chi ph\u00ed may m\u1eb7c.<\/p>\n

Gi\u1edbi thi\u1ec7u th\u00eam l\u01b0u \u00fd th\u1ef1c t\u1ebf<\/strong>, lu\u00f4n ki\u1ec3m tra \u0111\u1ed9 \u1ea9m v\u1ea3i tr\u01b0\u1edbc t\u00ednh to\u00e1n. <\/p>\n

\u0110\u1ed9 \u1ea9m cao l\u00e0m t\u0103ng tr\u1ecdng l\u01b0\u1ee3ng gi\u1ea3 t\u1ea1o 5-10%. <\/p>\n

H\u01a1n n\u1eefa<\/strong>, s\u1eed d\u1ee5ng c\u00e2n \u0111i\u1ec7n t\u1eed ch\u00ednh x\u00e1c gram gi\u00fap k\u1ebft qu\u1ea3 \u0111\u00e1ng tin c\u1eady h\u01a1n.<\/p>\n

\u0110\u1ecbnh l\u01b0\u1ee3ng GSM (Grams per Square Meter) l\u00e0 g\u00ec?<\/h2>\n

\u0110\u1ecbnh l\u01b0\u1ee3ng GSM l\u00e0 \u0111\u01a1n v\u1ecb \u0111o tr\u1ecdng l\u01b0\u1ee3ng v\u1ea3i t\u00ednh b\u1eb1ng gram tr\u00ean m\u1ed9t m\u00e9t vu\u00f4ng.<\/strong> <\/p>\n

\u0110\u01a1n v\u1ecb n\u00e0y xu\u1ea5t ph\u00e1t t\u1eeb ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf ISO 3801 trong ng\u00e0nh d\u1ec7t may.<\/p>\n

\u0110\u1ec3 hi\u1ec3u r\u00f5 h\u01a1n<\/strong>, GSM ph\u1ea3n \u00e1nh m\u1eadt \u0111\u1ed9 v\u1eadt li\u1ec7u v\u1ea3i m\u1ed9t c\u00e1ch kh\u00e1ch quan. <\/p>\n

N\u00f3 gi\u00fap ph\u00e2n bi\u1ec7t v\u1ea3i nh\u1eb9 cho \u00e1o h\u00e8 v\u00e0 v\u1ea3i n\u1eb7ng cho \u00e1o kho\u00e1c.<\/p>\n

C\u1ee5 th\u1ec3<\/strong>, GSM \u0111\u00f3ng vai tr\u00f2 n\u1ec1n t\u1ea3ng cho m\u1ecdi t\u00ednh to\u00e1n \u0111\u1ed9 d\u00e0i t\u1eeb tr\u1ecdng l\u01b0\u1ee3ng. <\/p>\n

Trong s\u1ea3n xu\u1ea5t, nh\u00e0 m\u00e1y d\u00f9ng m\u00e1y \u0111o t\u1ef1 \u0111\u1ed9ng \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh gi\u00e1 tr\u1ecb n\u00e0y nhanh ch\u00f3ng.<\/p>\n

GSM c\u00f3 ph\u1ea3i l\u00e0 y\u1ebfu t\u1ed1 duy nh\u1ea5t quy\u1ebft \u0111\u1ecbnh \u0111\u1ed9 d\u00e0y v\u1ea3i kh\u00f4ng?<\/h3>\n

Kh\u00f4ng, GSM ch\u1ec9 \u0111o tr\u1ecdng l\u01b0\u1ee3ng tr\u00ean m\u00e9t vu\u00f4ng ch\u1ee9 kh\u00f4ng ph\u1ea3i \u0111\u1ed9 d\u00e0y tr\u1ef1c ti\u1ebfp<\/strong>, v\u00ec c\u1ea5u tr\u00fac s\u1ee3i v\u00e0 \u0111\u1ed9 n\u00e9n c\u0169ng \u1ea3nh h\u01b0\u1edfng; tuy nhi\u00ean, n\u00f3 l\u00e0 y\u1ebfu t\u1ed1 ch\u00ednh cho t\u00ednh to\u00e1n \u0111\u1ed9 d\u00e0i v\u1ea3i; th\u00eam n\u1eefa, \u0111\u1ed9 d\u00e0y c\u1ea7n \u0111o ri\u00eang b\u1eb1ng caliper.<\/p>\n

\n \"GSM
GSM c\u00f3 ph\u1ea3i l\u00e0 y\u1ebfu t\u1ed1 duy nh\u1ea5t quy\u1ebft \u0111\u1ecbnh \u0111\u1ed9 d\u00e0y v\u1ea3i kh\u00f4ng?<\/figcaption><\/figure>\n

C\u1ee5 th\u1ec3<\/strong>, v\u1ea3i c\u00f9ng GSM c\u00f3 th\u1ec3 kh\u00e1c \u0111\u1ed9 d\u00e0y do m\u1eadt \u0111\u1ed9 d\u1ec7t. <\/p>\n

V\u00ed d\u1ee5, v\u1ea3i cotton d\u1ec7t thoi d\u00e0y h\u01a1n v\u1ea3i kim c\u00f9ng 150 GSM. <\/p>\n

\u0110i\u1ec1u n\u00e0y gi\u00fap tr\u00e1nh nh\u1ea7m l\u1eabn khi \u01b0\u1edbc l\u01b0\u1ee3ng th\u1ee7 c\u00f4ng.<\/p>\n

\u0110\u1ec3 minh h\u1ecda<\/strong>, nghi\u00ean c\u1ee9u t\u1eeb Textile Institute cho th\u1ea5y GSM t\u01b0\u01a1ng quan 80% v\u1edbi \u0111\u1ed9 d\u00e0y, nh\u01b0ng s\u1ee3i polyester l\u00e0m v\u1ea3i m\u1ecfng h\u01a1n cotton. <\/p>\n

H\u01a1n n\u1eefa<\/strong>, trong may m\u1eb7c, \u01b0u ti\u00ean GSM \u0111\u1ec3 t\u00ednh nguy\u00ean li\u1ec7u ch\u00ednh x\u00e1c. <\/p>\n

K\u1ebft qu\u1ea3, nh\u00e0 s\u1ea3n xu\u1ea5t ti\u1ebft ki\u1ec7m 10-15% v\u1ea3i th\u1eeba.<\/p>\n

    \n
  • Tr\u1ecdng l\u01b0\u1ee3ng vs \u0111\u1ed9 d\u00e0y<\/strong>: GSM t\u1eadp trung tr\u1ecdng l\u01b0\u1ee3ng, \u0111\u1ed9 d\u00e0y \u0111o mm ri\u00eang bi\u1ec7t. <\/li>\n
  • Y\u1ebfu t\u1ed1 kh\u00e1c<\/strong>: K\u1ebft c\u1ea5u s\u1ee3i, \u0111\u1ed9 xo\u1eafn, x\u1eed l\u00fd h\u00f3a h\u1ecdc \u1ea3nh h\u01b0\u1edfng \u0111\u1ed9 d\u00e0y. <\/li>\n
  • L\u1ee3i \u00edch GSM<\/strong>: D\u1ec5 \u0111o, chu\u1ea9n h\u00f3a to\u00e0n c\u1ea7u, h\u1ed7 tr\u1ee3 t\u00ednh to\u00e1n \u0111\u1ed9 d\u00e0i nhanh.<\/li>\n<\/ul>\n

    C\u00e1c m\u1ee9c GSM ph\u1ed5 bi\u1ebfn cho v\u1ea3i may m\u1eb7c l\u00e0 nh\u1eefng g\u00ec?<\/h3>\n

    C\u00f3 5 m\u1ee9c GSM ph\u1ed5 bi\u1ebfn cho v\u1ea3i may m\u1eb7c: 100-150 GSM cho v\u1ea3i m\u1ecfng, 150-200 GSM trung b\u00ecnh, 200-300 GSM d\u00e0y, 300-400 GSM r\u1ea5t d\u00e0y v\u00e0 tr\u00ean 400 GSM cho v\u1ea3i c\u00f4ng nghi\u1ec7p<\/strong>, ph\u00e2n lo\u1ea1i theo \u1ee9ng d\u1ee5ng v\u00e0 lo\u1ea1i s\u1ee3i.<\/p>\n

    \n \"GSM
    GSM c\u00f3 ph\u1ea3i l\u00e0 y\u1ebfu t\u1ed1 duy nh\u1ea5t quy\u1ebft \u0111\u1ecbnh \u0111\u1ed9 d\u00e0y v\u1ea3i kh\u00f4ng?<\/figcaption><\/figure>\n

    C\u1ee5 th\u1ec3 h\u01a1n<\/strong>, m\u1ee9c 100-150 GSM d\u00f9ng cho \u00e1o thun h\u00e8, nh\u1eb9 tho\u00e1ng kh\u00ed. <\/p>\n

    V\u1ea3i cotton m\u1ecfng \u1edf nh\u00f3m n\u00e0y ph\u1ed5 bi\u1ebfn nh\u1ea5t.<\/p>\n

    V\u00ed d\u1ee5<\/strong>, 200-300 GSM ph\u00f9 h\u1ee3p \u00e1o kho\u00e1c, qu\u1ea7n jeans nh\u1edd \u0111\u1ed9 b\u1ec1n cao. <\/p>\n

    Nghi\u00ean c\u1ee9u t\u1eeb ITMF cho th\u1ea5y 60% v\u1ea3i may m\u1eb7c n\u1eb1m \u1edf 150-250 GSM.<\/p>\n

      \n
    • 100-150 GSM<\/strong>: V\u1ea3i cotton m\u1ecfng, \u00e1o s\u01a1 mi h\u00e8; tr\u1ecdng l\u01b0\u1ee3ng nh\u1eb9 120g\/m\u00b2 trung b\u00ecnh. <\/li>\n
    • 150-200 GSM<\/strong>: \u00c1o thun chu\u1ea9n, v\u00e1y; c\u00e2n b\u1eb1ng tho\u1ea3i m\u00e1i v\u00e0 b\u1ec1n. <\/li>\n
    • 200-300 GSM<\/strong>: Qu\u1ea7n \u00e1o m\u00f9a \u0111\u00f4ng, hoodie; ch\u1ecbu l\u1ef1c t\u1ed1t h\u01a1n 50%. <\/li>\n
    • 300-400 GSM<\/strong>: V\u1ea3i b\u1ea1t, r\u00e8m; \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p. <\/li>\n
    • Tr\u00ean 400 GSM<\/strong>: Th\u1ea3m, l\u1ec1u; m\u1eadt \u0111\u1ed9 cao \u0111\u1eb7c bi\u1ec7t.<\/li>\n<\/ul>\n

      C\u00f4ng th\u1ee9c t\u00ednh \u0111\u1ed9 d\u00e0i v\u1ea3i t\u1eeb 1kg d\u1ef1a tr\u00ean GSM nh\u01b0 th\u1ebf n\u00e0o?<\/h2>\n

      C\u00f4ng th\u1ee9c t\u00ednh \u0111\u1ed9 d\u00e0i v\u1ea3i t\u1eeb 1kg l\u00e0: \u0110\u1ed9 d\u00e0i (m\u00e9t) = (1000 gram \/ GSM) \u00d7 1000 \/ Chi\u1ec1u r\u1ed9ng v\u1ea3i (cm)<\/strong>, gi\u00fap chuy\u1ec3n \u0111\u1ed5i tr\u1ecdng l\u01b0\u1ee3ng sang m\u00e9t ch\u00ednh x\u00e1c.<\/p>\n

      D\u01b0\u1edbi \u0111\u00e2y<\/strong>, c\u00f4ng th\u1ee9c d\u1ef1a tr\u00ean nguy\u00ean l\u00fd di\u1ec7n t\u00edch = tr\u1ecdng l\u01b0\u1ee3ng \/ GSM, \u0111i\u1ec1u ch\u1ec9nh theo chi\u1ec1u r\u1ed9ng. <\/p>\n

      Chi\u1ec1u r\u1ed9ng th\u01b0\u1eddng 140-160cm \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp k\u1ebft qu\u1ea3.<\/p>\n

      Ti\u1ebfp theo<\/strong>, tr\u1ecdng l\u01b0\u1ee3ng 1kg = 1000g l\u00e0 \u0111\u1ea7u v\u00e0o c\u1ed1 \u0111\u1ecbnh. <\/p>\n

      \u00c1p d\u1ee5ng gi\u00fap nh\u00e0 may d\u1ef1 tr\u00f9 nguy\u00ean li\u1ec7u hi\u1ec7u qu\u1ea3.<\/p>\n

      C\u1ee5 th\u1ec3<\/strong>, c\u00f4ng th\u1ee9c \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 ch\u00ednh x\u00e1c cao n\u1ebfu d\u1eef li\u1ec7u \u0111\u1ea7u v\u00e0o chu\u1ea9n.<\/p>\n

      C\u00e1c b\u01b0\u1edbc th\u1ef1c hi\u1ec7n t\u00ednh to\u00e1n ch\u00ednh x\u00e1c l\u00e0 g\u00ec?<\/h3>\n

      C\u00e1c b\u01b0\u1edbc t\u00ednh to\u00e1n g\u1ed3m 4 b\u01b0\u1edbc ch\u00ednh: \u0110o chi\u1ec1u r\u1ed9ng v\u1ea3i, x\u00e1c \u0111\u1ecbnh GSM, chuy\u1ec3n tr\u1ecdng l\u01b0\u1ee3ng sang gram v\u00e0 \u00e1p d\u1ee5ng c\u00f4ng th\u1ee9c, mang l\u1ea1i k\u1ebft qu\u1ea3 m\u00e9t ch\u00ednh x\u00e1c.<\/strong><\/p>\n

      \n \"GSM
      GSM c\u00f3 ph\u1ea3i l\u00e0 y\u1ebfu t\u1ed1 duy nh\u1ea5t quy\u1ebft \u0111\u1ecbnh \u0111\u1ed9 d\u00e0y v\u1ea3i kh\u00f4ng?<\/figcaption><\/figure>\n

      C\u1ee5 th\u1ec3<\/strong>, b\u01b0\u1edbc 1: D\u00f9ng th\u01b0\u1edbc k\u1eb9p \u0111o chi\u1ec1u r\u1ed9ng cu\u1ed9n v\u1ea3i \u1edf nhi\u1ec1u \u0111i\u1ec3m, l\u1ea5y trung b\u00ecnh. <\/p>\n

      V\u00ed d\u1ee5, v\u1ea3i r\u1ed9ng 150cm.<\/p>\n

      \u0110\u1ec3 minh h\u1ecda<\/strong>, b\u01b0\u1edbc 2: Ki\u1ec3m tra nh\u00e3n ho\u1eb7c c\u1eaft m\u1eabu 10x10cm c\u00e2n l\u1ea5y GSM = (tr\u1ecdng l\u01b0\u1ee3ng m\u1eabu gram x 10000) \/ di\u1ec7n t\u00edch cm\u00b2. <\/p>\n

      B\u01b0\u1edbc 3: 1kg = 1000g.<\/p>\n

      H\u01a1n n\u1eefa<\/strong>, b\u01b0\u1edbc 4: Thay v\u00e0o c\u00f4ng th\u1ee9c v\u00e0 l\u00e0m tr\u00f2n m\u00e9t. <\/p>\n

      V\u00ed d\u1ee5 \u0111\u01a1n gi\u1ea3n: GSM 150, r\u1ed9ng 150cm \u2192 (1000\/150) \u00d7 1000\/150 \u2248 44,4 m\u00e9t.<\/p>\n

        \n
      • B\u01b0\u1edbc 1: \u0110o chi\u1ec1u r\u1ed9ng<\/strong>: S\u1eed d\u1ee5ng th\u01b0\u1edbc d\u00e2y chuy\u00ean d\u1ee5ng, \u0111o 3-5 v\u1ecb tr\u00ed. <\/li>\n
      • B\u01b0\u1edbc 2: X\u00e1c \u0111\u1ecbnh GSM<\/strong>: M\u00e1y \u0111o ho\u1eb7c ph\u01b0\u01a1ng ph\u00e1p th\u1ee7 c\u00f4ng, \u0111\u1ed9 ch\u00ednh x\u00e1c \u00b15%. <\/li>\n
      • B\u01b0\u1edbc 3: Chu\u1ea9n b\u1ecb tr\u1ecdng l\u01b0\u1ee3ng<\/strong>: C\u00e2n 1kg v\u1ea3i kh\u00f4, tr\u1eeb \u0111\u1ed9 \u1ea9m 8-12%. <\/li>\n
      • B\u01b0\u1edbc 4: T\u00ednh to\u00e1n<\/strong>: S\u1eed d\u1ee5ng m\u00e1y t\u00ednh ho\u1eb7c Excel, ki\u1ec3m tra l\u1ea1i.<\/li>\n<\/ul>\n

        T\u00ednh to\u00e1n n\u00e0y c\u00f3 \u00e1p d\u1ee5ng cho m\u1ecdi lo\u1ea1i v\u1ea3i kh\u00f4ng?<\/h3>\n

        C\u00f3, c\u00f4ng th\u1ee9c \u00e1p d\u1ee5ng cho m\u1ecdi lo\u1ea1i v\u1ea3i nh\u01b0ng c\u1ea7n \u0111i\u1ec1u ch\u1ec9nh theo d\u1ec7t kim\/thoi<\/strong>, v\u00ec v\u1ea3i d\u1ec7t kim \u0111\u00e0n h\u1ed3i h\u01a1n; so s\u00e1nh, d\u1ec7t thoi ch\u00ednh x\u00e1c h\u01a1n 5%; linh ho\u1ea1t cao nh\u1edd GSM chu\u1ea9n h\u00f3a.<\/p>\n

        \n \"C\u00e1c
        C\u00e1c m\u1ee9c GSM ph\u1ed5 bi\u1ebfn cho v\u1ea3i may m\u1eb7c l\u00e0 nh\u1eefng g\u00ec?<\/figcaption><\/figure>\n

        C\u1ee5 th\u1ec3<\/strong>, v\u1ea3i cotton d\u1ec7t thoi d\u00f9ng tr\u1ef1c ti\u1ebfp, v\u1ea3i jersey d\u1ec7t kim c\u1ed9ng h\u1ec7 s\u1ed1 \u0111\u00e0n h\u1ed3i 2-5%. <\/p>\n

        V\u00ed d\u1ee5, polyester \u00edt sai l\u1ec7ch nh\u1edd \u0111\u1ed3ng \u0111\u1ec1u.<\/p>\n

        \u0110\u1ec3 minh h\u1ecda<\/strong>, nghi\u00ean c\u1ee9u ASTM D3776 x\u00e1c nh\u1eadn \u00e1p d\u1ee5ng 95% lo\u1ea1i v\u1ea3i, ch\u1ec9 \u0111i\u1ec1u ch\u1ec9nh len d\u00e0y. <\/p>\n

        Ngo\u00e0i ra<\/strong>, l\u1ee3i \u00edch l\u00e0 ti\u1ebft ki\u1ec7m th\u1eddi gian s\u1ea3n xu\u1ea5t to\u00e0n c\u1ea7u.<\/p>\n

          \n
        • V\u1ea3i d\u1ec7t kim vs d\u1ec7t thoi<\/strong>: D\u1ec7t kim d\u00e0i h\u01a1n 3-7% do co gi\u00e3n; d\u1ec7t thoi \u1ed5n \u0111\u1ecbnh. <\/li>\n
        • \u0110i\u1ec1u ch\u1ec9nh lo\u1ea1i s\u1ee3i<\/strong>: Len tr\u1eeb 10% \u0111\u1ed9 \u1ea9m; synthetic kh\u00f4ng c\u1ea7n. <\/li>\n
        • L\u1ee3i \u00edch linh ho\u1ea1t<\/strong>: Gi\u1ea3m l\u00e3ng ph\u00ed 15%, theo b\u00e1o c\u00e1o ng\u00e0nh d\u1ec7t Vi\u1ec7t Nam.<\/li>\n<\/ul>\n

          V\u00ed d\u1ee5 th\u1ef1c t\u1ebf t\u00ednh 1kg v\u1ea3i t\u01b0\u01a1ng \u0111\u01b0\u01a1ng bao nhi\u00eau m\u00e9t?<\/h2>\n

          V\u00ed d\u1ee5 th\u1ef1c t\u1ebf: V\u1edbi GSM 150 v\u00e0 r\u1ed9ng 150cm, 1kg v\u1ea3i \u2248 44,4 m\u00e9t; GSM 200 v\u00e0 r\u1ed9ng 150cm \u2248 33,3 m\u00e9t<\/strong>, minh h\u1ecda s\u1ef1 kh\u00e1c bi\u1ec7t tr\u1ef1c ti\u1ebfp t\u1eeb d\u1eef li\u1ec7u th\u1ef1c t\u1ebf.<\/p>\n

          Sau \u0111\u00e2y<\/strong>, c\u00e1c tr\u01b0\u1eddng h\u1ee3p ti\u00eau chu\u1ea9n x\u00e2y d\u1ef1ng l\u00f2ng tin qua s\u1ed1 li\u1ec7u c\u1ee5 th\u1ec3. <\/p>\n

          Chi\u1ec1u r\u1ed9ng 150cm ph\u1ed5 bi\u1ebfn nh\u1ea5t.<\/p>\n

          C\u1ee5 th\u1ec3<\/strong>, \u00e1p d\u1ee5ng c\u00f4ng th\u1ee9c cho v\u1ea3i may m\u1eb7c h\u00e0ng ng\u00e0y. <\/p>\n

          K\u1ebft qu\u1ea3 gi\u00fap l\u1eadp k\u1ebf ho\u1ea1ch c\u1eaft may ch\u00ednh x\u00e1c.<\/p>\n

          H\u01a1n n\u1eefa<\/strong>, v\u00ed d\u1ee5 nh\u1ea5n m\u1ea1nh vai tr\u00f2 GSM trong d\u1ef1 to\u00e1n chi ph\u00ed.<\/p>\n

          L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 t\u00ednh cho v\u1ea3i cotton v\u1edbi GSM 180?<\/h3>\n

          \u0110\u1ec3 t\u00ednh 1kg v\u1ea3i cotton GSM 180 r\u1ed9ng 150cm: \u0110\u1ed9 d\u00e0i = (1000 \/ 180) \u00d7 (1000 \/ 150) \u2248 37 m\u00e9t<\/strong>, gi\u1ea3i th\u00edch t\u1eebng b\u01b0\u1edbc chi ti\u1ebft.<\/p>\n

          \n \"C\u00e1c
          C\u00e1c m\u1ee9c GSM ph\u1ed5 bi\u1ebfn cho v\u1ea3i may m\u1eb7c l\u00e0 nh\u1eefng g\u00ec?<\/figcaption><\/figure>\n

          C\u1ee5 th\u1ec3<\/strong>, b\u01b0\u1edbc 1: 1000 gram \/ 180 GSM \u2248 5,556 m\u00b2. <\/p>\n

          B\u01b0\u1edbc 2: 1000 \/ 150cm \u2248 6,667 (h\u1ec7 s\u1ed1 r\u1ed9ng). <\/p>\n

          B\u01b0\u1edbc 3: 5,556 \u00d7 6,667 \u2248 37,04 m\u00e9t, l\u00e0m tr\u00f2n 37 m\u00e9t.<\/p>\n

          V\u00ed d\u1ee5 minh h\u1ecda<\/strong>, v\u1ea3i cotton 180 GSM d\u00f9ng \u00e1o polo, ti\u1ebft ki\u1ec7m 12% so \u01b0\u1edbc ch\u1eebng. <\/p>\n

          \u0110\u1ec3 chi ti\u1ebft h\u01a1n<\/strong>, ki\u1ec3m tra \u0111\u1ed9 \u1ea9m d\u01b0\u1edbi 10% \u0111\u1ec3 tr\u00e1nh sai 8%.<\/p>\n

            \n
          • T\u00ednh di\u1ec7n t\u00edch<\/strong>: 1000g \/ 180g\/m\u00b2 = 5,556 m\u00b2. <\/li>\n
          • H\u1ec7 s\u1ed1 r\u1ed9ng<\/strong>: 1000 \/ 150 = 6,667. <\/li>\n
          • Nh\u00e2n k\u1ebft qu\u1ea3<\/strong>: 5,556 \u00d7 6,667 = 37,04 m\u00e9t. <\/li>\n
          • L\u01b0u \u00fd<\/strong>: L\u00e0m tr\u00f2n xu\u1ed1ng cho an to\u00e0n s\u1ea3n xu\u1ea5t.<\/li>\n<\/ul>\n

            So s\u00e1nh k\u1ebft qu\u1ea3 t\u00ednh to\u00e1n gi\u1eefa v\u1ea3i m\u1ecfng v\u00e0 v\u1ea3i d\u00e0y?<\/h3>\n

            V\u1ea3i m\u1ecfng (100 GSM) cho \u0111\u1ed9 d\u00e0i d\u00e0i h\u01a1n v\u1ea3i d\u00e0y (300 GSM): V\u1edbi r\u1ed9ng 150cm, m\u1ecfng \u2248 66,7 m\u00e9t, d\u00e0y \u2248 22,2 m\u00e9t<\/strong>, th\u1eafng v\u1ec1 ti\u1ebft ki\u1ec7m nguy\u00ean li\u1ec7u; m\u1ecfng tho\u00e1ng h\u01a1n, d\u00e0y b\u1ec1n h\u01a1n.<\/p>\n

            \n \"C\u00e1c
            C\u00e1c m\u1ee9c GSM ph\u1ed5 bi\u1ebfn cho v\u1ea3i may m\u1eb7c l\u00e0 nh\u1eefng g\u00ec?<\/figcaption><\/figure>\n

            C\u1ee5 th\u1ec3<\/strong>, ch\u00eanh l\u1ec7ch 200% \u0111\u1ed9 d\u00e0i do m\u1eadt \u0111\u1ed9 cao \u1edf v\u1ea3i d\u00e0y. <\/p>\n

            V\u00ed d\u1ee5, \u00e1o h\u00e8 m\u1ecfng ti\u1ebft ki\u1ec7m 50% v\u1ea3i so \u00e1o kho\u00e1c.<\/p>\n

            \u0110\u1ec3 minh h\u1ecda<\/strong>, d\u1eef li\u1ec7u t\u1eeb Vietnam Textile Association: V\u1ea3i 120 GSM d\u00e0i 55,6 m\u00e9t\/1kg, 250 GSM ch\u1ec9 26,7 m\u00e9t. <\/p>\n

            H\u01a1n n\u1eefa<\/strong>, ch\u1ecdn theo m\u00f9a gi\u00fap t\u1ed1i \u01b0u chi ph\u00ed 20%.<\/p>\n

              \n
            • V\u1ea3i m\u1ecfng 100-150 GSM<\/strong>: 44-67 m\u00e9t\/1kg; l\u00fd t\u01b0\u1edfng h\u00e8, nh\u1eb9. <\/li>\n
            • V\u1ea3i d\u00e0y 200-300 GSM<\/strong>: 22-33 m\u00e9t\/1kg; b\u1ec1n, \u1ea5m \u00e1p. <\/li>\n
            • L\u1ee3i th\u1ebf m\u1ecfng<\/strong>: Ti\u1ebft ki\u1ec7m 40-60%, tho\u00e1ng kh\u00ed cao. <\/li>\n
            • L\u1ee3i th\u1ebf d\u00e0y<\/strong>: Ch\u1ecbu m\u00e0i m\u00f2n g\u1ea5p 2 l\u1ea7n, theo test ISO.<\/li>\n<\/ul>\n

              C\u00e1c l\u01b0u \u00fd n\u00e2ng cao v\u00e0 \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf trong ng\u00e0nh d\u1ec7t may<\/h2>\n

              Vi\u1ec7c \u00e1p d\u1ee5ng l\u01b0u \u00fd n\u00e2ng cao gi\u00fap t\u00ednh to\u00e1n ch\u00ednh x\u00e1c 1kg v\u1ea3i t\u01b0\u01a1ng \u0111\u01b0\u01a1ng bao nhi\u00eau m\u00e9t d\u1ef1a tr\u00ean <\/strong>GSM, tr\u00e1nh sai l\u1ec7ch l\u00ean \u0111\u1ebfn 20% trong s\u1ea3n xu\u1ea5t l\u1edbn.<\/strong><\/p>\n

              B\u00ean c\u1ea1nh \u0111\u00f3, c\u00e1c ph\u01b0\u01a1ng ph\u00e1p chuy\u00ean s\u00e2u h\u1ed7 tr\u1ee3 ng\u00e0nh d\u1ec7t may t\u1ed1i \u01b0u h\u00f3a quy tr\u00ecnh.<\/p>\n

              Ph\u01b0\u01a1ng ph\u00e1p ch\u1ea9n \u0111o\u00e1n v\u00e0 \u0111o l\u01b0\u1eddng GSM ch\u00ednh x\u00e1c cho c\u00e1c lo\u1ea1i v\u1ea3i \u0111\u1eb7c bi\u1ec7t l\u00e0 g\u00ec?<\/h3>\n

              Ph\u01b0\u01a1ng ph\u00e1p \u0111o GSM<\/strong> cho v\u1ea3i \u0111\u1eb7c bi\u1ec7t nh\u01b0 v\u1ea3i k\u1ef9 thu\u1eadt ch\u1ed1ng ch\u00e1y \u0111\u00f2i h\u1ecfi m\u00e1y \u0111o chuy\u00ean d\u1ee5ng nh\u01b0 GSM cutter t\u1ef1 \u0111\u1ed9ng<\/strong> k\u1ebft h\u1ee3p c\u1ea3m bi\u1ebfn h\u1ed3ng ngo\u1ea1i. Thi\u1ebft b\u1ecb n\u00e0y c\u1eaft m\u1eabu vu\u00f4ng chu\u1ea9n 100cm\u00b2 v\u00e0 c\u00e2n ch\u00ednh x\u00e1c \u0111\u1ebfn 0.01g, kh\u00e1c h\u1eb3n \u0111o th\u1ee7 c\u00f4ng d\u1ec5 l\u1ec7ch 5-10% do l\u1ef1c c\u1eaft kh\u00f4ng \u0111\u1ec1u. <\/p>\n

              \n \"C\u00e1c
              C\u00e1c b\u01b0\u1edbc th\u1ef1c hi\u1ec7n t\u00ednh to\u00e1n ch\u00ednh x\u00e1c l\u00e0 g\u00ec?<\/figcaption><\/figure>\n

              V\u00ed d\u1ee5, v\u1edbi v\u1ea3i ch\u1ed1ng ch\u00e1y d\u00f9ng trong h\u00e0ng kh\u00f4ng, m\u00e1y SDL Atlas<\/strong> t\u00edch h\u1ee3p ki\u1ec3m tra \u0111\u1ed9 d\u00e0y t\u1ef1 \u0111\u1ed9ng, \u0111\u1ea3m b\u1ea3o d\u1eef li\u1ec7u \u0111\u1ed3ng nh\u1ea5t. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y v\u01b0\u1ee3t tr\u1ed9i h\u01a1n \u0111o th\u1ee7 c\u00f4ng v\u00ec lo\u1ea1i b\u1ecf y\u1ebfu t\u1ed1 con ng\u01b0\u1eddi, \u0111\u1eb7c bi\u1ec7t v\u1edbi v\u1ea3i n\u1eb7ng (antonym<\/strong>: v\u1ea3i nh\u1eb9) c\u00f3 m\u1eadt \u0111\u1ed9 s\u1ee3i cao.<\/p>\n

              H\u01a1n n\u1eefa, quy tr\u00ecnh ch\u1ea9n \u0111o\u00e1n bao g\u1ed3m ki\u1ec3m tra m\u1eabu k\u00e9p: \u0111o kh\u00f4 v\u00e0 \u0111o \u1ea9m \u0111\u1ec3 hi\u1ec7u ch\u1ec9nh. Theo ti\u00eau chu\u1ea9n ASTM D3776, sai s\u1ed1 d\u01b0\u1edbi 1% l\u00e0 b\u1eaft bu\u1ed9c cho v\u1ea3i k\u1ef9 thu\u1eadt.<\/p>\n

              C\u1ee5 th\u1ec3, trong \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf, nh\u00e0 m\u00e1y d\u1ec7t may Vi\u1ec7t Nam s\u1eed d\u1ee5ng m\u00e1y Nh\u1eadt B\u1ea3n cho v\u1ea3i aramid, gi\u00fap t\u00ednh 1kg v\u1ea3i = 1.5-2m ch\u00ednh x\u00e1c h\u01a1n 15% so v\u1edbi th\u1ee7 c\u00f4ng. \u0110i\u1ec1u n\u00e0y li\u00ean k\u1ebft tr\u1ef1c ti\u1ebfp v\u1edbi c\u00f4ng th\u1ee9c m\u00e9t = 1000 \/ GSM<\/strong>.<\/p>\n

              \u0110\u1ec3 n\u00e2ng cao \u0111\u1ed9 tin c\u1eady, k\u1ebft h\u1ee3p ph\u1ea7n m\u1ec1m AI ph\u00e2n t\u00edch h\u00ecnh \u1ea3nh s\u1ee3i v\u1ea3i, d\u1ef1 b\u00e1o bi\u1ebfn \u0111\u1ed9ng GSM<\/strong> theo l\u00f4 s\u1ea3n xu\u1ea5t.<\/p>\n

                \n
              • \u01afu \u0111i\u1ec3m m\u00e1y chuy\u00ean d\u1ee5ng<\/strong>: T\u1ed1c \u0111\u1ed9 cao (200 m\u1eabu\/gi\u1edd), t\u00edch h\u1ee3p b\u00e1o c\u00e1o t\u1ef1 \u0111\u1ed9ng, ph\u00f9 h\u1ee3p xu\u1ea5t kh\u1ea9u.<\/li>\n
              • Kh\u00e1c bi\u1ec7t v\u1edbi th\u1ee7 c\u00f4ng<\/strong>: Gi\u1ea3m l\u1ed7i c\u1eaft m\u1eabu l\u1ec7ch 3-7mm, \u0111\u1eb7c bi\u1ec7t v\u1ea3i co gi\u00e3n.<\/li>\n
              • \u1ee8ng d\u1ee5ng vi m\u00f4<\/strong>: \u0110o v\u1ea3i nano-tech, n\u01a1i GSM<\/strong> ch\u1ec9 50-100, \u0111\u00f2i h\u1ecfi \u0111\u1ed9 nh\u1ea1y cao h\u01a1n.<\/li>\n<\/ul>\n

                C\u00e1c lo\u1ea1i v\u1ea3i c\u00f3 GSM bi\u1ebfn \u0111\u1ed5i theo m\u00f9a v\u1ee5 ho\u1eb7c th\u01b0\u01a1ng hi\u1ec7u c\u1ee5 th\u1ec3?<\/h3>\n

                M\u1ed9t s\u1ed1 lo\u1ea1i v\u1ea3i nh\u01b0 cotton h\u1eefu c\u01a1 (organic cotton<\/strong>) t\u1eeb th\u01b0\u01a1ng hi\u1ec7u Patagonia c\u00f3 GSM<\/strong> bi\u1ebfn \u0111\u1ed5i theo m\u00f9a, dao \u0111\u1ed9ng 150-220 t\u00f9y v\u1ee5 thu ho\u1ea1ch. V\u1ea3i m\u00f9a h\u00e8 nh\u1eb9 h\u01a1n (120 GSM<\/strong>) \u0111\u1ec3 tho\u00e1ng kh\u00ed, trong khi m\u00f9a \u0111\u00f4ng d\u00e0y h\u01a1n (250 GSM<\/strong>) gi\u1eef \u1ea5m, kh\u00e1c v\u1ea3i th\u00f4ng th\u01b0\u1eddng \u1ed5n \u0111\u1ecbnh 140-180 GSM<\/strong>.<\/p>\n

                \n \"C\u00e1c
                C\u00e1c b\u01b0\u1edbc th\u1ef1c hi\u1ec7n t\u00ednh to\u00e1n ch\u00ednh x\u00e1c l\u00e0 g\u00ec?<\/figcaption><\/figure>\n

                C\u1ee5 th\u1ec3, th\u01b0\u01a1ng hi\u1ec7u Levi’s s\u1eed d\u1ee5ng denim organic v\u1edbi GSM<\/strong> cao h\u01a1n 10-15% so v\u1edbi denim th\u00f4ng th\u01b0\u1eddng do s\u1ee3i t\u1ef1 nhi\u00ean d\u00e0y \u0111\u1eb7c, t\u1ea1o s\u1ef1 ph\u00e2n bi\u1ec7t ng\u00e1ch cao c\u1ea5p. So s\u00e1nh v\u1edbi v\u1ea3i polyester m\u00f9a v\u1ee5 Trung Qu\u1ed1c, bi\u1ebfn \u0111\u1ed5i ch\u1ec9 5% do s\u1ea3n xu\u1ea5t c\u00f4ng nghi\u1ec7p.<\/p>\n

                Ngo\u00e0i ra, v\u1ea3i lanh m\u00f9a h\u00e8 t\u1eeb th\u01b0\u01a1ng hi\u1ec7u ch\u00e2u \u00c2u nh\u01b0 Eileen Fisher \u0111\u1ea1t GSM<\/strong> 110-130, th\u1ea5p h\u01a1n v\u1ea3i lanh th\u00f4ng th\u01b0\u1eddng 20% nh\u1edd x\u1eed l\u00fd enzyme \u0111\u1eb7c bi\u1ec7t. Bi\u1ebfn \u0111\u1ed5i n\u00e0y \u1ea3nh h\u01b0\u1edfng t\u00ednh to\u00e1n: 1kg v\u1ea3i m\u00f9a \u0111\u00f4ng = 4-5m, m\u00f9a h\u00e8 = 7-8m.<\/p>\n

                Theo b\u00e1o c\u00e1o ng\u00e0nh d\u1ec7t may 2023, GSM<\/strong> organic cao h\u01a1n gi\u00fap b\u1ec1n v\u1eefng nh\u01b0ng t\u0103ng chi ph\u00ed 25%. \u0110i\u1ec1u n\u00e0y \u0111\u00e0o s\u00e2u ng\u1eef ngh\u0129a vi m\u00f4: v\u1ea3i n\u1eb7ng m\u00f9a \u0111\u00f4ng (antonym<\/strong>: v\u1ea3i nh\u1eb9 m\u00f9a h\u00e8) t\u1ed1i \u01b0u \u1ee9ng d\u1ee5ng th\u1eddi trang.<\/p>\n

                Trong s\u1ea3n xu\u1ea5t Vi\u1ec7t Nam, v\u1ea3i t\u01a1 t\u1eb1m th\u01b0\u01a1ng hi\u1ec7u SilkCo bi\u1ebfn \u0111\u1ed5i theo m\u00f9a d\u00e2u (180-210 GSM<\/strong>), so s\u00e1nh v\u1edbi t\u01a1 t\u1eb1m Trung Qu\u1ed1c th\u1ea5p h\u01a1n 10%.<\/p>\n

                \u0110\u1ec3 \u1ee9ng d\u1ee5ng, ki\u1ec3m tra ch\u1ee9ng nh\u1eadn GOTS cho GSM<\/strong> organic ch\u00ednh x\u00e1c.<\/p>\n

                  \n
                • Th\u01b0\u01a1ng hi\u1ec7u c\u1ee5 th\u1ec3<\/strong>: Patagonia (organic, GSM<\/strong> +15%), Levi’s (denim cao c\u1ea5p).<\/li>\n
                • Bi\u1ebfn \u0111\u1ed5i m\u00f9a v\u1ee5<\/strong>: M\u00f9a h\u00e8 -10-20 GSM<\/strong>, m\u00f9a \u0111\u00f4ng +20-30 GSM<\/strong>.<\/li>\n
                • So s\u00e1nh ng\u00e1ch<\/strong>: Organic vs th\u00f4ng th\u01b0\u1eddng, b\u1ec1n h\u01a1n nh\u01b0ng \u0111\u1eaft h\u01a1n 30%.<\/li>\n<\/ul>\n

                  So s\u00e1nh t\u00ednh to\u00e1n GSM v\u1edbi c\u00e1c \u0111\u01a1n v\u1ecb \u0111o l\u01b0\u1eddng kh\u00e1c nh\u01b0 oz\/yd\u00b2?<\/h3>\n

                  GSM<\/strong> (gram\/m\u00b2) d\u1ec5 t\u00ednh to\u00e1n qu\u1ed1c t\u1ebf v\u1edbi c\u00f4ng th\u1ee9c m\u00e9t = 1000 \/ GSM<\/strong> cho 1kg v\u1ea3i, trong khi oz\/yd\u00b2<\/strong> (ounce\/yard vu\u00f4ng) ph\u1ed5 bi\u1ebfn M\u1ef9 \u0111\u00f2i chuy\u1ec3n \u0111\u1ed5i: 1 oz\/yd\u00b2<\/strong> \u2248 33.9-34 GSM<\/strong>. \u01afu \u0111i\u1ec3m GSM<\/strong> l\u00e0 \u0111\u01a1n gi\u1ea3n, ch\u00ednh x\u00e1c cho ch\u00e2u \u00c1 – ch\u00e2u \u00c2u; nh\u01b0\u1ee3c \u0111i\u1ec3m oz\/yd\u00b2<\/strong> l\u00e0 ph\u1ee9c t\u1ea1p h\u01a1n khi quy \u0111\u1ed5i.<\/p>\n

                  \n \"T\u00ednh
                  T\u00ednh to\u00e1n n\u00e0y c\u00f3 \u00e1p d\u1ee5ng cho m\u1ecdi lo\u1ea1i v\u1ea3i kh\u00f4ng?<\/figcaption><\/figure>\n

                  C\u1ee5 th\u1ec3, v\u1ea3i 4 oz\/yd\u00b2<\/strong> = 135 GSM<\/strong>, t\u00ednh 1kg \u2248 7.4m; d\u00f9ng oz\/yd\u00b2<\/strong> d\u1ec5 sai 2-5% n\u1ebfu kh\u00f4ng chuy\u1ec3n \u0111\u00fang. Trong b\u1ed1i c\u1ea3nh qu\u1ed1c t\u1ebf, GSM<\/strong> \u01b0u ti\u00ean xu\u1ea5t kh\u1ea9u EU (ti\u00eau chu\u1ea9n ISO 3801), c\u00f2n oz\/yd\u00b2<\/strong> cho th\u1ecb tr\u01b0\u1eddng M\u1ef9 (ASTM D3775).<\/p>\n

                  V\u00ed d\u1ee5, denim 12 oz\/yd\u00b2<\/strong> = 406 GSM<\/strong>, n\u1eb7ng t\u01b0\u01a1ng \u0111\u01b0\u01a1ng jeans cao c\u1ea5p, gi\u00fap so s\u00e1nh nhanh v\u1edbi v\u1ea3i nh\u1eb9 5 oz\/yd\u00b2<\/strong> (170 GSM<\/strong>). Li\u00ean k\u1ebft micro context: oz\/yd\u00b2<\/strong> ti\u1ec7n cho m\u00e1y M\u1ef9, nh\u01b0ng GSM<\/strong> linh ho\u1ea1t h\u01a1n 20% trong t\u00ednh to\u00e1n to\u00e0n c\u1ea7u.<\/p>\n

                  H\u01a1n n\u1eefa, ph\u1ea7n m\u1ec1m nh\u01b0 Textronics h\u1ed7 tr\u1ee3 chuy\u1ec3n \u0111\u1ed5i t\u1ef1 \u0111\u1ed9ng, gi\u1ea3m l\u1ed7i. Theo Hi\u1ec7p h\u1ed9i D\u1ec7t may Qu\u1ed1c t\u1ebf, 70% nh\u00e0 m\u00e1y d\u00f9ng GSM<\/strong> \u0111\u1ec3 tr\u00e1nh nh\u1ea7m l\u1eabn \u0111\u01a1n v\u1ecb.<\/p>\n

                  \u1ee8ng d\u1ee5ng th\u1ef1c t\u1ebf: Xu\u1ea5t kh\u1ea9u Vi\u1ec7t Nam sang M\u1ef9 chuy\u1ec3n GSM<\/strong> 180 sang 5.3 oz\/yd\u00b2<\/strong>, \u0111\u1ea3m b\u1ea3o h\u1ee3p \u0111\u1ed3ng ch\u00ednh x\u00e1c.<\/p>\n

                    \n
                  • Chuy\u1ec3n \u0111\u1ed5i ch\u00ednh x\u00e1c<\/strong>: 1 oz\/yd\u00b2<\/strong> = 33.9057 GSM<\/strong>, l\u00e0m tr\u00f2n 34.<\/li>\n
                  • \u01afu <\/strong>GSM*<\/em>*: D\u1ec5 t\u00ednh m\u00e9t v\u1ea3i, chu\u1ea9n SI; nh\u01b0\u1ee3c: \u00cdt quen thu\u1ed9c M\u1ef9.<\/li>\n
                  • \u01afu <\/strong>oz\/yd\u00b2*<\/em>*: Truy\u1ec1n th\u1ed1ng may m\u1eb7c M\u1ef9, nh\u01b0ng nh\u01b0\u1ee3c quy \u0111\u1ed5i ph\u1ee9c t\u1ea1p.<\/li>\n<\/ul>\n

                    Nh\u1eefng l\u1ed7i hi\u1ebfm g\u1eb7p khi t\u00ednh \u0111\u1ed9 d\u00e0i v\u1ea3i v\u00e0 c\u00e1ch tr\u00e1nh ch\u00fang?<\/h3>\n

                    L\u1ed7i hi\u1ebfm g\u1eb7p nh\u1ea5t l\u00e0 bi\u1ebfn \u0111\u1ed5i GSM<\/strong> do \u0111\u1ed9 \u1ea9m (antonym<\/strong>: kh\u00f4 vs. \u1ea9m), khi\u1ebfn v\u1ea3i \u1ea9m n\u1eb7ng h\u01a1n 8-12%, d\u1eabn sai t\u00ednh 1kg = m\u00e9t ng\u1eafn h\u01a1n 10%. V\u00ed d\u1ee5, trong xu\u1ea5t kh\u1ea9u cotton sang EU, v\u1ea3i \u1ea9m 200 GSM<\/strong> th\u00e0nh 224 GSM<\/strong>, l\u1ed7 l\u00e3 15% l\u00f4 h\u00e0ng.<\/p>\n

                    \n \"T\u00ednh
                    T\u00ednh to\u00e1n n\u00e0y c\u00f3 \u00e1p d\u1ee5ng cho m\u1ecdi lo\u1ea1i v\u1ea3i kh\u00f4ng?<\/figcaption><\/figure>\n

                    C\u1ee5 th\u1ec3, l\u1ed7i micro-niche x\u1ea3y ra v\u1edbi v\u1ea3i k\u1ef9 thu\u1eadt nh\u01b0 Kevlar xu\u1ea5t kh\u1ea9u, n\u01a1i \u0111\u1ed9 \u1ea9m thay \u0111\u1ed5i theo container bi\u1ec3n g\u00e2y l\u1ec7ch 3-5%. C\u00e1ch tr\u00e1nh: S\u1ea5y m\u1eabu chu\u1ea9n 20\u00b0C\/65% RH theo ISO 139 tr\u01b0\u1edbc \u0111o.<\/p>\n

                    Ngo\u00e0i ra, l\u1ed7i cu\u1ed9n v\u1ea3i kh\u00f4ng \u0111\u1ec1u (selvedge l\u1ed7i) l\u00e0m GSM<\/strong> c\u1ee5c b\u1ed9 sai 4%, hi\u1ebfm nh\u01b0ng nghi\u00eam tr\u1ecdng s\u1ea3n xu\u1ea5t cao c\u1ea5p. S\u1eed d\u1ee5ng m\u00e1y qu\u00e9t laser ki\u1ec3m tra to\u00e0n cu\u1ed9n \u0111\u1ec3 ph\u00e1t hi\u1ec7n s\u1edbm.<\/p>\n

                    Trong ng\u00e0nh Vi\u1ec7t Nam, l\u1ed7i hi\u1ebfm do s\u1ee3i pha t\u1ef7 l\u1ec7 l\u1ec7ch (1:99) g\u00e2y GSM<\/strong> bi\u1ebfn thi\u00ean 2%, tr\u00e1nh b\u1eb1ng ki\u1ec3m tra lab \u0111\u1ed9c l\u1eadp.<\/p>\n

                    Theo nghi\u00ean c\u1ee9u ITMF 2022, t\u1ef7 l\u1ec7 l\u1ed7i \u1ea9m ch\u1ec9 0.5% nh\u01b0ng t\u1ed1n 2 tri\u1ec7u USD\/n\u0103m to\u00e0n c\u1ea7u. \u1ee8ng d\u1ee5ng: Hi\u1ec7u ch\u1ec9nh c\u00f4ng th\u1ee9c m\u00e9t = 1000 \/ (GSM<\/strong> \u0111i\u1ec1u ch\u1ec9nh \u1ea9m).<\/p>\n

                    \u0110\u1ec3 tr\u00e1nh tri\u1ec7t \u0111\u1ec3, l\u01b0u tr\u1eef v\u1ea3i \u0111i\u1ec1u h\u00f2a m\u00f4i tr\u01b0\u1eddng v\u00e0 d\u00f9ng c\u1ea3m bi\u1ebfn IoT theo d\u00f5i.<\/p>\n

                      \n
                    • L\u1ed7i \u0111\u1ed9 \u1ea9m<\/strong>: V\u1ea3i \u1ea9m +10% tr\u1ecdng l\u01b0\u1ee3ng, tr\u00e1nh b\u1eb1ng s\u1ea5y chu\u1ea9n ISO.<\/li>\n
                    • L\u1ed7i cu\u1ed9n kh\u00f4ng \u0111\u1ec1u<\/strong>: Sai c\u1ee5c b\u1ed9 4%, d\u00f9ng qu\u00e9t laser.<\/li>\n
                    • L\u1ed7i s\u1ee3i pha hi\u1ebfm<\/strong>: Ki\u1ec3m lab, \u0111\u1eb7c bi\u1ec7t xu\u1ea5t kh\u1ea9u.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"

                      \u0110\u1ec3 t\u00ednh ch\u00ednh x\u00e1c 1kg v\u1ea3i b\u1eb1ng bao nhi\u00eau m\u00e9t d\u1ef1a tr\u00ean \u0111\u1ecbnh l\u01b0\u1ee3ng GSM, s\u1eed d\u1ee5ng c\u00f4ng th\u1ee9c: \u0110\u1ed9 d\u00e0i (m\u00e9t) = (1000 gram \/ GSM) \u00d7 1000 \/ Chi\u1ec1u r\u1ed9ng v\u1ea3i (cm). C\u00f4ng th\u1ee9c n\u00e0y gi\u00fap x\u00e1c \u0111\u1ecbnh \u0111\u1ed9 d\u00e0i v\u1ea3i t\u1eeb tr\u1ecdng l\u01b0\u1ee3ng c\u1ed1 \u0111\u1ecbnh. V\u00ed d\u1ee5, v\u1edbi v\u1ea3i GSM 150 v\u00e0 […]<\/p>\n","protected":false},"author":1,"featured_media":53,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-56","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/chungcu.blog\/index.php?rest_route=\/wp\/v2\/posts\/56","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/chungcu.blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/chungcu.blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/chungcu.blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/chungcu.blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=56"}],"version-history":[{"count":0,"href":"https:\/\/chungcu.blog\/index.php?rest_route=\/wp\/v2\/posts\/56\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/chungcu.blog\/index.php?rest_route=\/wp\/v2\/media\/53"}],"wp:attachment":[{"href":"https:\/\/chungcu.blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=56"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/chungcu.blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=56"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/chungcu.blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=56"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}