{"id":1465,"date":"2026-03-02T14:21:55","date_gmt":"2026-03-02T06:21:55","guid":{"rendered":"https:\/\/www.puncturetest.com\/?p=1465"},"modified":"2026-03-02T14:21:56","modified_gmt":"2026-03-02T06:21:56","slug":"polyethylene-film-dart-impact-test","status":"publish","type":"post","link":"https:\/\/www.puncturetest.com\/vi\/polyethylene-film-dart-impact-test\/","title":{"rendered":"Th\u1eed nghi\u1ec7m va \u0111\u1eadp m\u0169i t\u00ean tr\u00ean m\u00e0ng polyethylene v\u00e0 Ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m ASTM D1709 v\u1ec1 \u0111\u1ed9 b\u1ec1n c\u1ee7a m\u00e0ng"},"content":{"rendered":"

Gi\u1edbi thi\u1ec7u v\u1ec1 th\u1eed nghi\u1ec7m va \u0111\u1eadp m\u0169i t\u00ean tr\u00ean m\u00e0ng polyethylene<\/h2>\n\n\n\n

M\u00e0ng polyethylene \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong ng\u00e0nh \u0111\u00f3ng g\u00f3i, d\u1ec7t may v\u00e0 nhi\u1ec1u ng\u00e0nh c\u00f4ng nghi\u1ec7p kh\u00e1c. M\u1ed9t ti\u00eau ch\u00ed ch\u1ea5t l\u01b0\u1ee3ng quan tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u00e1c lo\u1ea1i m\u00e0ng n\u00e0y l\u00e0 kh\u1ea3 n\u0103ng ch\u1ecbu va \u0111\u1eadp. C\u00e1c Th\u1eed nghi\u1ec7m va \u0111\u1eadp m\u0169i t\u00ean tr\u00ean m\u00e0ng polyethylene<\/strong> l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p ti\u00eau chu\u1ea9n \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh kh\u1ea3 n\u0103ng ch\u1ed1ng va \u0111\u1eadp c\u1ee7a m\u00e0ng nh\u1ef1a. Th\u1eed nghi\u1ec7m n\u00e0y m\u00f4 ph\u1ecfng c\u00e1c \u0111i\u1ec1u ki\u1ec7n th\u1ef1c t\u1ebf khi m\u1ed9t v\u1eadt th\u1ec3 r\u01a1i xu\u1ed1ng va ch\u1ea1m v\u00e0o v\u1eadt li\u1ec7u, t\u1eeb \u0111\u00f3 cho th\u1ea5y m\u1ee9c \u0111\u1ed9 m\u00e0ng nh\u1ef1a c\u00f3 th\u1ec3 ch\u1ed1ng l\u1ea1i s\u1ef1 r\u00e1ch ho\u1eb7c h\u01b0 h\u1ecfng.<\/p>\n\n\n\n

Ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m ASTM D1709<\/h2>\n\n\n\n

C\u00e1i ASTM D1709<\/strong> Ti\u00eau chu\u1ea9n n\u00e0y quy \u0111\u1ecbnh c\u00e1c ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh kh\u1ea3 n\u0103ng ch\u1ed1ng va \u0111\u1eadp c\u1ee7a m\u00e0ng nh\u1ef1a. Ti\u00eau chu\u1ea9n n\u00e0y \u0111\u01b0a ra hai ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m ch\u00ednh:<\/p>\n\n\n\n

    \n
  1. Ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m A<\/strong> bao g\u1ed3m vi\u1ec7c s\u1eed d\u1ee5ng m\u1ed9t m\u0169i t\u00ean h\u00ecnh b\u00e1n c\u1ea7u c\u00f3 \u0111\u01b0\u1eddng k\u00ednh 38,10 mm, \u0111\u01b0\u1ee3c th\u1ea3 r\u01a1i t\u1eeb \u0111\u1ed9 cao 0,66 m\u00e9t.<\/li>\n\n\n\n
  2. Ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m B<\/strong> s\u1eed d\u1ee5ng m\u1ed9t m\u0169i t\u00ean c\u00f3 \u0111\u01b0\u1eddng k\u00ednh l\u1edbn h\u01a1n, 50,80 mm, \u0111\u01b0\u1ee3c th\u1ea3 t\u1eeb \u0111\u1ed9 cao 1,52 m\u00e9t.<\/li>\n<\/ol>\n\n\n\n

    C\u1ea3 hai ph\u01b0\u01a1ng ph\u00e1p n\u00e0y \u0111\u1ec1u \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 kh\u1ea3 n\u0103ng ch\u1ecbu va \u0111\u1eadp c\u1ee7a m\u00e0ng nh\u1ef1a khi b\u1ecb phi ti\u00eau r\u01a1i t\u1ef1 do t\u00e1c \u0111\u1ed9ng. Th\u1eed nghi\u1ec7m n\u00e0y x\u00e1c \u0111\u1ecbnh tr\u1ecdng l\u01b0\u1ee3ng do h\u01b0 h\u1ecfng do va \u0111\u1eadp<\/strong>, t\u1ee9c l\u00e0 tr\u1ecdng l\u01b0\u1ee3ng t\u1ed1i thi\u1ec3u c\u1ea7n thi\u1ebft \u0111\u1ec3 l\u00e0m r\u00e1ch m\u00e0ng.<\/p>\n\n\n\n

    \"Th\u1eed<\/a><\/figure>\n\n\n\n

    C\u00e1c y\u1ebfu t\u1ed1 ch\u00ednh c\u1ee7a b\u00e0i ki\u1ec3m tra<\/h2>\n\n\n\n
      \n
    • C\u1ea5u h\u00ecnh th\u1eed nghi\u1ec7m:<\/strong> M\u1eabu m\u00e0ng \u0111\u01b0\u1ee3c k\u1eb9p ch\u1eb7t gi\u1eefa hai t\u1ea5m, sau \u0111\u00f3 m\u1ed9t m\u0169i t\u00ean \u0111\u01b0\u1ee3c b\u1eafn ra \u0111\u1ec3 va ch\u1ea1m v\u00e0o m\u00e0ng. N\u0103ng l\u01b0\u1ee3ng do m\u0169i t\u00ean truy\u1ec1n v\u00e0o khi\u1ebfn m\u00e0ng b\u1ecb \u0111\u1ee9t t\u1ea1i m\u1ed9t \u0111i\u1ec3m c\u1ee5 th\u1ec3, v\u00e0 \u0111i\u1ec3m n\u00e0y sau \u0111\u00f3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 t\u00ednh to\u00e1n tr\u1ecdng l\u01b0\u1ee3ng g\u00e2y \u0111\u1ee9t do va ch\u1ea1m.<\/li>\n\n\n\n
    • \u0110i\u1ec3m h\u1ecfng h\u00f3c:<\/strong> Th\u1eed nghi\u1ec7m n\u00e0y nh\u1eb1m x\u00e1c \u0111\u1ecbnh tr\u1ecdng l\u01b0\u1ee3ng khi\u1ebfn m\u1eabu th\u1eed 50% b\u1ecb h\u1ecfng. K\u1ebft qu\u1ea3 \u0111\u01b0\u1ee3c \u0111o b\u1eb1ng gam (g), t\u1eeb \u0111\u00f3 cho bi\u1ebft m\u1ee9c \u0111\u1ed9 ch\u1ed1ng ch\u1ecbu c\u1ee7a m\u00e0ng tr\u01b0\u1edbc t\u00e1c \u0111\u1ed9ng va \u0111\u1eadp.<\/li>\n\n\n\n
    • \u0110i\u1ec1u ki\u1ec7n th\u1eed nghi\u1ec7m ti\u00eau chu\u1ea9n:<\/strong> Th\u1eed nghi\u1ec7m \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh \u1edf nhi\u1ec7t \u0111\u1ed9 23 \u00b1 2\u00b0C (73,4 \u00b1 3,6\u00b0F) v\u00e0 \u0111\u1ed9 \u1ea9m t\u01b0\u01a1ng \u0111\u1ed1i 50 \u00b1 10%. Vi\u1ec7c chu\u1ea9n h\u00f3a n\u00e0y \u0111\u1ea3m b\u1ea3o k\u1ebft qu\u1ea3 th\u1eed nghi\u1ec7m nh\u1ea5t qu\u00e1n v\u00e0 c\u00f3 th\u1ec3 l\u1eb7p l\u1ea1i.<\/li>\n<\/ul>\n\n\n\n

      \u0110\u1ed9 b\u1ec1n c\u1ee7a m\u00e0ng nh\u1ef1a<\/h2>\n\n\n\n

      \u0110\u1ed9 b\u1ec1n c\u1ee7a m\u00e0ng nh\u1ef1a<\/strong> Kh\u1ea3 n\u0103ng ch\u1ecbu va \u0111\u1eadp c\u1ee7a m\u00e0ng ph\u1ee5 thu\u1ed9c v\u00e0o nhi\u1ec1u y\u1ebfu t\u1ed1, bao g\u1ed3m \u0111\u1ed9 d\u00e0y m\u00e0ng, th\u00e0nh ph\u1ea7n v\u1eadt li\u1ec7u v\u00e0 s\u1ef1 hi\u1ec7n di\u1ec7n c\u1ee7a c\u00e1c khuy\u1ebft t\u1eadt. M\u00e0ng d\u00e0y h\u01a1n c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c l\u1ef1c va \u0111\u1eadp l\u1edbn h\u01a1n, nh\u01b0ng c\u1ea7n l\u01b0u \u00fd r\u1eb1ng kh\u1ea3 n\u0103ng ch\u1ecbu va \u0111\u1eadp kh\u00f4ng ph\u1ea3i l\u00fac n\u00e0o c\u0169ng t\u1ef7 l\u1ec7 thu\u1eadn tr\u1ef1c ti\u1ebfp v\u1edbi \u0111\u1ed9 d\u00e0y. C\u00e1c m\u00e0ng c\u00f3 s\u1ef1 kh\u00f4ng \u0111\u1ed3ng nh\u1ea5t ho\u1eb7c t\u1ea1p ch\u1ea5t c\u00f3 th\u1ec3 b\u1ecb h\u01b0 h\u1ecfng d\u1ec5 d\u00e0ng h\u01a1n, b\u1ea5t k\u1ec3 \u0111\u1ed9 d\u00e0y c\u1ee7a ch\u00fang l\u00e0 bao nhi\u00eau.<\/p>\n\n\n\n

      Quy tr\u00ecnh th\u1eed nghi\u1ec7m m\u0169i t\u00ean va \u0111\u1eadp<\/h2>\n\n\n\n
        \n
      1. Chu\u1ea9n b\u1ecb m\u1eabu:<\/strong> C\u00e1c m\u1eabu th\u1eed ph\u1ea3i kh\u00f4ng c\u00f3 l\u1ed7 kim, n\u1ebfp nh\u0103n v\u00e0 c\u00e1c khuy\u1ebft t\u1eadt kh\u00e1c. M\u00e0ng \u0111\u01b0\u1ee3c \u0111i\u1ec1u ki\u1ec7n h\u00f3a trong \u0111i\u1ec1u ki\u1ec7n nhi\u1ec7t \u0111\u1ed9 v\u00e0 \u0111\u1ed9 \u1ea9m \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t tr\u01b0\u1edbc khi th\u1eed nghi\u1ec7m.<\/li>\n\n\n\n
      2. Th\u1eed nghi\u1ec7m va \u0111\u1eadp Dart:<\/strong> S\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p \u0111\u00e3 ch\u1ecdn (A ho\u1eb7c B), m\u1ed9t m\u0169i t\u00ean \u0111\u01b0\u1ee3c ph\u00f3ng t\u1eeb \u0111\u1ed9 cao quy \u0111\u1ecbnh \u0111\u1ec3 va ch\u1ea1m v\u00e0o m\u00e0ng. Tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a m\u0169i t\u00ean \u0111\u01b0\u1ee3c t\u0103ng ho\u1eb7c gi\u1ea3m t\u1eebng b\u01b0\u1edbc, t\u00f9y thu\u1ed9c v\u00e0o vi\u1ec7c m\u00e0ng c\u00f3 b\u1ecb h\u1ecfng hay kh\u00f4ng.<\/li>\n\n\n\n
      3. \u0110\u00e1nh gi\u00e1 k\u1ebft qu\u1ea3:<\/strong> Tr\u1ecdng l\u01b0\u1ee3ng khi b\u1ecb h\u1ecfng \u0111\u01b0\u1ee3c ghi l\u1ea1i, v\u00e0 n\u0103ng l\u01b0\u1ee3ng c\u1ee7a m\u0169i t\u00ean \u0111\u01b0\u1ee3c so s\u00e1nh v\u1edbi \u0111\u1ed9 b\u1ec1n c\u1ee7a m\u00e0ng. K\u1ebft qu\u1ea3 n\u00e0y gi\u00fap hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 c\u00e1ch m\u00e0ng s\u1ebd ho\u1ea1t \u0111\u1ed9ng trong c\u00e1c \u0111i\u1ec1u ki\u1ec7n th\u1ef1c t\u1ebf, ch\u1eb3ng h\u1ea1n nh\u01b0 khi ph\u1ea3i ch\u1ecbu c\u00e1c l\u1ef1c va \u0111\u1eadp trong qu\u00e1 tr\u00ecnh \u0111\u00f3ng g\u00f3i ho\u1eb7c v\u1eadn chuy\u1ec3n.<\/li>\n<\/ol>\n\n\n\n

        M\u00e1y th\u1eed va \u0111\u1eadp m\u0169i t\u00ean r\u01a1i t\u1ef1 do<\/h2>\n\n\n\n

        C\u00e1i m\u00e1y th\u1eed va \u0111\u1eadp m\u0169i t\u00ean r\u01a1i t\u1ef1 do<\/strong> l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 quan tr\u1ecdng \u0111\u1ec3 th\u1ef1c hi\u1ec7n th\u1eed nghi\u1ec7m n\u00e0y. Thi\u1ebft b\u1ecb n\u00e0y \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 ph\u00f3ng m\u0169i t\u00ean v\u1edbi \u0111\u1ed9 ch\u00ednh x\u00e1c v\u00e0 t\u00ednh nh\u1ea5t qu\u00e1n cao, \u0111\u1ea3m b\u1ea3o k\u1ebft qu\u1ea3 ch\u00ednh x\u00e1c. C\u00e1c thi\u1ebft b\u1ecb th\u1eed nghi\u1ec7m n\u00e0y l\u00e0 kh\u00f4ng th\u1ec3 thi\u1ebfu \u0111\u1ed1i v\u1edbi c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p \u0111\u00f2i h\u1ecfi m\u00e0ng nh\u1ef1a ch\u1ea5t l\u01b0\u1ee3ng cao, ch\u1eb3ng h\u1ea1n nh\u01b0 ng\u00e0nh bao b\u00ec, n\u01a1i \u0111\u1ed9 b\u1ec1n v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng va \u0111\u1eadp l\u00e0 nh\u1eefng y\u1ebfu t\u1ed1 then ch\u1ed1t.<\/p>\n\n\n\n

        C\u00e1c t\u00ednh n\u0103ng ch\u00ednh c\u1ee7a m\u00e1y th\u1eed va \u0111\u1eadp m\u0169i t\u00ean r\u01a1i t\u1ef1 do:<\/h2>\n\n\n\n
          \n
        • \u0110i\u1ec1u khi\u1ec3n ch\u00ednh x\u00e1c:<\/strong> Cho ph\u00e9p \u0111i\u1ec1u ch\u1ec9nh ch\u00ednh x\u00e1c chi\u1ec1u cao r\u01a1i v\u00e0 tr\u1ecdng l\u01b0\u1ee3ng m\u0169i t\u00ean.<\/li>\n\n\n\n
        • C\u00e1c th\u00f4ng s\u1ed1 th\u1eed nghi\u1ec7m c\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh:<\/strong> Ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh tr\u1ecdng l\u01b0\u1ee3ng v\u00e0 chi\u1ec1u cao c\u1ee7a m\u0169i t\u00ean \u0111\u1ec3 \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u th\u1eed nghi\u1ec7m kh\u00e1c nhau.<\/li>\n\n\n\n
        • Ghi d\u1eef li\u1ec7u:<\/strong> M\u1ed9t s\u1ed1 m\u1eabu m\u00e1y \u0111\u01b0\u1ee3c trang b\u1ecb m\u00e0n h\u00ecnh k\u1ef9 thu\u1eadt s\u1ed1 v\u00e0 t\u00ednh n\u0103ng ghi l\u1ea1i d\u1eef li\u1ec7u, gi\u00fap ph\u00e2n t\u00edch k\u1ebft qu\u1ea3 m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3.<\/li>\n<\/ul>\n\n\n\n

          L\u1ee3i \u00edch c\u1ee7a th\u1eed nghi\u1ec7m va \u0111\u1eadp m\u0169i t\u00ean tr\u00ean m\u00e0ng polyethylene<\/h2>\n\n\n\n
            \n
          1. Ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng:<\/strong> Th\u1eed nghi\u1ec7m va \u0111\u1eadp b\u1eb1ng m\u0169i t\u00ean cung c\u1ea5p nh\u1eefng th\u00f4ng tin qu\u00fd gi\u00e1 v\u1ec1 ch\u1ea5t l\u01b0\u1ee3ng c\u1ee7a m\u00e0ng nh\u1ef1a. C\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng k\u1ebft qu\u1ea3 n\u00e0y \u0111\u1ec3 \u0111i\u1ec1u ch\u1ec9nh quy tr\u00ecnh s\u1ea3n xu\u1ea5t v\u00e0 \u0111\u1ea3m b\u1ea3o t\u00ednh \u0111\u1ed3ng nh\u1ea5t c\u1ee7a m\u00e0ng nh\u1ef1a.<\/li>\n\n\n\n
          2. L\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u:<\/strong> \u0110\u1ed1i v\u1edbi c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p nh\u01b0 ng\u00e0nh \u0111\u00f3ng g\u00f3i, vi\u1ec7c l\u1ef1a ch\u1ecdn m\u00e0ng c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng va \u0111\u1eadp cao l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o s\u1ef1 an to\u00e0n cho c\u00e1c s\u1ea3n ph\u1ea9m \u0111\u01b0\u1ee3c \u0111\u00f3ng g\u00f3i.<\/li>\n\n\n\n
          3. Tu\u00e2n th\u1ee7:<\/strong> Tu\u00e2n th\u1ee7 ASTM D1709<\/strong> \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c lo\u1ea1i m\u00e0ng n\u00e0y \u0111\u00e1p \u1ee9ng c\u00e1c ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf v\u1ec1 kh\u1ea3 n\u0103ng ch\u1ed1ng va \u0111\u1eadp, nh\u1edd \u0111\u00f3 ph\u00f9 h\u1ee3p v\u1edbi nhi\u1ec1u \u1ee9ng d\u1ee5ng kh\u00e1c nhau.<\/li>\n<\/ol>\n\n\n\n

            K\u1ebft lu\u1eadn<\/h2>\n\n\n\n

            C\u00e1i Th\u1eed nghi\u1ec7m va \u0111\u1eadp m\u0169i t\u00ean tr\u00ean m\u00e0ng polyethylene<\/strong> l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p \u0111\u00e1nh gi\u00e1 thi\u1ebft y\u1ebfu \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh \u0111\u1ed9 b\u1ec1n c\u1ee7a m\u00e0ng nh\u1ef1a. B\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng ASTM D1709<\/strong> ti\u00eau chu\u1ea9n n\u00e0y, c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t c\u00f3 th\u1ec3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c lo\u1ea1i m\u00e0ng c\u1ee7a h\u1ecd \u0111\u00e1p \u1ee9ng c\u00e1c ti\u00eau ch\u00ed v\u1ec1 kh\u1ea3 n\u0103ng ch\u1ed1ng va \u0111\u1eadp c\u1ea7n thi\u1ebft cho c\u00e1c \u1ee9ng d\u1ee5ng kh\u00e1c nhau, ch\u1eb3ng h\u1ea1n nh\u01b0 bao b\u00ec v\u00e0 d\u1ec7t may. B\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng m\u1ed9t m\u00e1y th\u1eed va \u0111\u1eadp m\u0169i t\u00ean r\u01a1i t\u1ef1 do<\/strong> mang l\u1ea1i k\u1ebft qu\u1ea3 ch\u00ednh x\u00e1c v\u00e0 nh\u1ea5t qu\u00e1n, nh\u1edd \u0111\u00f3 tr\u1edf th\u00e0nh m\u1ed9t c\u00f4ng c\u1ee5 h\u1eefu \u00edch cho c\u00f4ng t\u00e1c ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng trong ng\u00e0nh.<\/p>\n\n\n\n

            \u0110\u1ec3 c\u00f3 k\u1ebft qu\u1ea3 ki\u1ec3m tra ch\u00ednh x\u00e1c v\u00e0 \u0111\u00e1ng tin c\u1eady h\u01a1n, C\u00f4ng ty TNHH Cell Instruments.<\/strong> cung c\u1ea5p m\u1ed9t lo\u1ea1t c\u00e1c gi\u1ea3i ph\u00e1p ki\u1ec3m th\u1eed, bao g\u1ed3m m\u00e1y th\u1eed va \u0111\u1eadp m\u0169i t\u00ean r\u01a1i t\u1ef1 do<\/strong>, nh\u1eb1m h\u1ed7 tr\u1ee3 ng\u00e0nh c\u00f4ng nghi\u1ec7p m\u00e0ng nh\u1ef1a duy tr\u00ec c\u00e1c ti\u00eau chu\u1ea9n cao v\u1ec1 ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 hi\u1ec7u su\u1ea5t.<\/p>\n\n\n\n

            <\/p>","protected":false},"excerpt":{"rendered":"

            Gi\u1edbi thi\u1ec7u v\u1ec1 Th\u1eed nghi\u1ec7m va \u0111\u1eadp b\u1eb1ng phi ti\u00eau \u0111\u1ed1i v\u1edbi m\u00e0ng polyethylene M\u00e0ng polyethylene \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong ng\u00e0nh \u0111\u00f3ng g\u00f3i, d\u1ec7t may v\u00e0 nhi\u1ec1u ng\u00e0nh c\u00f4ng nghi\u1ec7p kh\u00e1c. M\u1ed9t ti\u00eau ch\u00ed \u0111\u00e1nh gi\u00e1 ch\u1ea5t l\u01b0\u1ee3ng quan tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u00e1c lo\u1ea1i m\u00e0ng n\u00e0y l\u00e0 kh\u1ea3 n\u0103ng ch\u1ecbu va \u0111\u1eadp. Th\u1eed nghi\u1ec7m va \u0111\u1eadp b\u1eb1ng phi ti\u00eau \u0111\u1ed1i v\u1edbi m\u00e0ng polyethylene l\u00e0 ph\u01b0\u01a1ng ph\u00e1p ti\u00eau chu\u1ea9n \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh kh\u1ea3 n\u0103ng ch\u1ecbu va \u0111\u1eadp c\u1ee7a m\u00e0ng nh\u1ef1a. Th\u1eed nghi\u1ec7m n\u00e0y m\u00f4 ph\u1ecfng c\u00e1c \u0111i\u1ec1u ki\u1ec7n th\u1ef1c t\u1ebf [\u2026]<\/p>","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1465","post","type-post","status-publish","format-standard","hentry","category-softgel-test"],"yoast_head":"\nPolyethylene Film Dart Impact Test and ASTM D1709 Standards<\/title>\n<meta name=\"description\" content=\"Learn about polyethylene film dart impact test, including resistance of plastic film and ASTM D1709 standards. 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