{"id":1645,"date":"2026-07-28T09:17:56","date_gmt":"2026-07-28T09:17:56","guid":{"rendered":"https:\/\/www.packtests.com\/?post_type=standard&p=1645"},"modified":"2026-07-28T09:17:58","modified_gmt":"2026-07-28T09:17:58","slug":"tappi-t826","status":"publish","type":"standard","link":"https:\/\/www.packtests.com\/vi\/standard\/tappi-t826\/","title":{"rendered":"TAPPI T826"},"content":{"rendered":"

C\u00e1i TAPPI T826<\/strong> test method is widely used for evaluating the short span compressive strength of paper and board materials, especially those used in container and box manufacturing. The test provides valuable information about the intrinsic compression performance of paper fibers by measuring the maximum compressive force a small test span can withstand before failure. For laboratories, packaging manufacturers, and quality control teams, TAPPI T826 short span compression testing<\/strong> offers an effective way to assess material strength, optimize board design, and improve packaging reliability.<\/p>\n\n\n\n

C\u00e1i SCT-01 - M\u00e1y th\u1eed n\u00e9n nh\u1ecbp ng\u1eafn<\/strong> from Cell Instruments is designed for accurate Th\u1eed nghi\u1ec7m \u0111\u1ed9 b\u1ec1n n\u00e9n tr\u00ean \u0111o\u1ea1n ng\u1eafn \u0111\u1ed1i v\u1edbi gi\u1ea5y v\u00e0 b\u00eca<\/strong> in both machine direction (MD) and cross direction (CD). The instrument applies controlled compression to a precisely prepared test specimen and measures the maximum force required to cause compressive failure. It is suitable for paper and board materials with grammage ranging from 100 g\/m\u00b2 to 400 g\/m\u00b2, making it an ideal solution for packaging material development and production quality inspection.<\/p>\n\n\n\n

What Is TAPPI T826 Short Span Compression Testing?<\/h2>\n\n\n\n

TAPPI T826<\/strong> describes a test method for determining the compressive strength of paper and board over a short unsupported span. Unlike conventional compression tests that evaluate complete packaging structures, short span compression<\/strong> focuses on the compression resistance of the paper or board itself.<\/p>\n\n\n\n

Paper-based packaging materials depend heavily on fiber strength to maintain structural performance. During manufacturing, transportation, stacking, and storage, corrugated boxes and paper containers experience compression forces from multiple directions. Measuring short span compressive strength<\/strong> helps engineers understand the material\u2019s ability to resist these forces before designing final packaging structures.<\/p>\n\n\n\n

The test evaluates the material\u2019s inherent fiber network strength by minimizing the influence of buckling. Because the test span is extremely short, the measured compression force reflects the paper structure rather than the overall geometry of the specimen.<\/p>\n\n\n\n

\"TAPPI<\/figure>\n\n\n\n

T\u1ea1i sao vi\u1ec7c th\u1eed nghi\u1ec7m \u0111\u1ed9 b\u1ec1n n\u00e9n tr\u00ean nh\u1ecbp ng\u1eafn l\u1ea1i quan tr\u1ecdng?<\/h2>\n\n\n\n

Paper and board compression performance directly affects packaging durability. A material with insufficient compressive strength may lead to:<\/p>\n\n\n\n

    \n
  • Reduced stacking performance during transportation<\/li>\n\n\n\n
  • Premature box deformation<\/li>\n\n\n\n
  • Lower protection for packaged products<\/li>\n\n\n\n
  • Increased packaging failure risks<\/li>\n\n\n\n
  • Unstable production quality<\/li>\n<\/ul>\n\n\n\n

    For packaging engineers, Th\u1eed nghi\u1ec7m \u0111\u1ed9 b\u1ec1n n\u00e9n tr\u00ean \u0111o\u1ea1n ng\u1eafn \u0111\u1ed1i v\u1edbi gi\u1ea5y v\u00e0 b\u00eca<\/strong> provides important material data before converting paper into cartons, corrugated structures, or other packaging products.<\/p>\n\n\n\n

    The test is especially useful when comparing:<\/p>\n\n\n\n

      \n
    • Different paper grades<\/li>\n\n\n\n
    • Fiber compositions<\/li>\n\n\n\n
    • C\u00e1c quy tr\u00ecnh s\u1ea3n xu\u1ea5t<\/li>\n\n\n\n
    • Raw material suppliers<\/li>\n\n\n\n
    • Surface treatment methods<\/li>\n<\/ul>\n\n\n\n

      By obtaining reliable compression strength values, manufacturers can select suitable materials while reducing excessive material usage and maintaining packaging performance.<\/p>\n\n\n\n

      Testing Principle of TAPPI T826 Method<\/h2>\n\n\n\n

      The basic principle of TAPPI T826 short span compression testing<\/strong> is to compress a narrow paper or board specimen between two precisely aligned clamps until the sample fails.<\/p>\n\n\n\n

      The SCT-01 Short Span Compression Tester uses a 15 mm wide test piece held securely between two compression jaws. The clamps maintain a fixed test span of 0.70 mm, creating a controlled compression condition.<\/p>\n\n\n\n

      Trong qu\u00e1 tr\u00ecnh th\u1eed nghi\u1ec7m:<\/p>\n\n\n\n

        \n
      1. A prepared specimen is placed between the upper and lower clamping jaws.<\/li>\n\n\n\n
      2. The pneumatic clamps apply a consistent holding force to secure the sample.<\/li>\n\n\n\n
      3. The compression mechanism moves the clamps together at a controlled speed.<\/li>\n\n\n\n
      4. The instrument records the maximum compression force before failure.<\/li>\n\n\n\n
      5. The measured value represents the compressive strength of the paper or board sample.<\/li>\n<\/ol>\n\n\n\n

        This testing method does not determine strain at break. Instead, it focuses on the maximum compressive force that the material can withstand under short-span conditions.<\/p>\n\n\n\n

        How Is Short Span Compression Testing Performed?<\/h2>\n\n\n\n

        M\u1ed9t short span compression<\/strong> test requires accurate specimen preparation and controlled testing conditions.<\/p>\n\n\n\n

        Typical testing steps include:<\/p>\n\n\n\n

        Chu\u1ea9n b\u1ecb m\u1eabu<\/h3>\n\n\n\n

        A paper or board specimen is prepared according to the required dimensions:<\/p>\n\n\n\n

          \n
        • Width: 15 mm<\/li>\n\n\n\n
        • Length: 75 mm<\/li>\n<\/ul>\n\n\n\n

          Samples are normally tested in both machine direction and cross direction because paper fiber orientation influences compression performance.<\/p>\n\n\n\n

          Sample Clamping<\/h3>\n\n\n\n

          The SCT-01 uses specially designed compression clamps with high-friction contact surfaces. Each clamp includes stationary and movable jaws with a 30 mm clamping length.<\/p>\n\n\n\n

          The clamping system applies a constant force of:<\/p>\n\n\n\n

          2300 \u00b1 500 N<\/strong><\/p>\n\n\n\n

          This ensures the specimen remains securely positioned during compression and prevents sample slipping.<\/p>\n\n\n\n

          \u0110o \u0111\u1ed9 n\u00e9n<\/h3>\n\n\n\n

          The instrument compresses the specimen at a controlled test speed:<\/p>\n\n\n\n

          3 \u00b1 0,1 mm\/ph\u00fat<\/strong><\/p>\n\n\n\n

          The maximum force recorded before failure represents the short span compressive strength of the sample.<\/p>\n\n\n\n

          C\u00e1c t\u00ednh n\u0103ng c\u1ee7a m\u00e1y th\u1eed n\u00e9n nh\u1ecbp ng\u1eafn SCT-01<\/h2>\n\n\n\n

          The SCT-01 is developed for laboratories and production environments requiring repeatable compression measurements for paper and board materials.<\/p>\n\n\n\n

          C\u00e1c t\u00ednh n\u0103ng ch\u00ednh bao g\u1ed3m:<\/p>\n\n\n\n

          T\u00ednh n\u0103ng<\/th>M\u00f4 t\u1ea3<\/th><\/tr><\/thead>
          Ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m<\/td>Th\u1eed nghi\u1ec7m n\u00e9n v\u1edbi nh\u1ecbp ng\u1eafn<\/td><\/tr>
          H\u01b0\u1edbng d\u1eabn l\u00e0m b\u00e0i thi<\/td>H\u01b0\u1edbng d\u1ecdc v\u00e0 h\u01b0\u1edbng ngang<\/td><\/tr>
          Chi\u1ec1u r\u1ed9ng m\u1eabu<\/td>15 mm<\/td><\/tr>
          Kho\u1ea3ng c\u00e1ch n\u00e9n<\/td>0,3\u20132 mm<\/td><\/tr>
          Ph\u1ea1m vi th\u1eed nghi\u1ec7m<\/td>1\u2013500 N ho\u1eb7c theo y\u00eau c\u1ea7u<\/td><\/tr>
          Ngh\u1ecb quy\u1ebft<\/td>0,01 N<\/td><\/tr>
          T\u1ed1c \u0111\u1ed9 ki\u1ec3m tra<\/td>3 \u00b1 0,1 mm\/ph\u00fat<\/td><\/tr>
          H\u1ec7 \u0111i\u1ec1u h\u00e0nh<\/td>\u0110i\u1ec1u khi\u1ec3n b\u1eb1ng PLC v\u1edbi giao di\u1ec7n HMI<\/td><\/tr>
          Ph\u01b0\u01a1ng ph\u00e1p k\u1eb9p<\/td>K\u1eb9p m\u1eabu b\u1eb1ng kh\u00ed n\u00e9n<\/td><\/tr>
          \u0110\u01a1n v\u1ecb d\u1eef li\u1ec7u<\/td>N, kgf, lbf<\/td><\/tr>
          Giao ti\u1ebfp<\/td>Giao di\u1ec7n RS-232 t\u00f9y ch\u1ecdn<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

          The PLC-controlled system provides stable operation, while the HMI interface allows operators to easily configure test parameters and review results.<\/p>\n\n\n\n

          Advantages of Using SCT-01 for Paper and Board Testing<\/h2>\n\n\n\n

          Accurate Compression Force Measurement<\/h3>\n\n\n\n

          The SCT-01 provides high-resolution force measurement with a resolution of 0.01 N, allowing laboratories to detect small differences between paper grades and production batches.<\/p>\n\n\n\n

          Stable Sample Holding<\/h3>\n\n\n\n

          Pneumatic clamping ensures consistent holding pressure and reduces operator influence during testing. Proper alignment between clamps improves repeatability.<\/p>\n\n\n\n

          Flexible Testing Settings<\/h3>\n\n\n\n

          Adjustable test parameters allow users to evaluate different paper and board materials according to their specific quality requirements.<\/p>\n\n\n\n

          Qu\u1ea3n l\u00fd d\u1eef li\u1ec7u thu\u1eadn ti\u1ec7n<\/h3>\n\n\n\n

          The optional RS-232 communication function enables connection with external software systems for data collection and laboratory management.<\/p>\n\n\n\n

          Improved Quality Control<\/h3>\n\n\n\n

          Manufacturers can use test results to monitor incoming raw materials, optimize production processes, and verify finished product performance.<\/p>\n\n\n\n

          C\u00e1c \u1ee9ng d\u1ee5ng c\u1ee7a th\u1eed nghi\u1ec7m n\u00e9n nh\u1ecbp ng\u1eafn<\/h2>\n\n\n\n

          Short span compression strength testing of paper and board<\/strong> is widely applied in industries that depend on reliable paper-based packaging materials.<\/p>\n\n\n\n

          C\u00e1c \u1ee9ng d\u1ee5ng ph\u1ed5 bi\u1ebfn bao g\u1ed3m:<\/p>\n\n\n\n

          S\u1ea3n xu\u1ea5t bao b\u00ec s\u00f3ng<\/h3>\n\n\n\n

          Containerboard producers use compression data to evaluate paper performance before converting it into corrugated packaging structures.<\/p>\n\n\n\n

          S\u1ea3n xu\u1ea5t b\u00eca gi\u1ea5y<\/h3>\n\n\n\n

          Paper mills use compression testing to compare different grades and monitor manufacturing consistency.<\/p>\n\n\n\n

          Nghi\u00ean c\u1ee9u v\u00e0 Ph\u00e1t tri\u1ec3n v\u1ec1 Bao b\u00ec<\/h3>\n\n\n\n

          R&D engineers use short span compression results to develop lightweight packaging solutions while maintaining strength requirements.<\/p>\n\n\n\n

          C\u00e1c ph\u00f2ng th\u00ed nghi\u1ec7m ki\u1ec3m tra ch\u1ea5t l\u01b0\u1ee3ng<\/h3>\n\n\n\n

          Independent laboratories and inspection organizations use standardized compression testing methods for material evaluation and supplier verification.<\/p>\n\n\n\n

          Materials Suitable for TAPPI T826 Testing<\/h2>\n\n\n\n

          The SCT-01 is suitable for testing various paper and board materials, including:<\/p>\n\n\n\n

            \n
          • Gi\u1ea5y l\u00e0m th\u00f9ng carton<\/li>\n\n\n\n
          • Gi\u1ea5y \u0111\u00f3ng g\u00f3i<\/li>\n\n\n\n
          • B\u00eca c\u1ee9ng<\/li>\n\n\n\n
          • Box manufacturing materials<\/li>\n\n\n\n
          • C\u00e1c th\u00e0nh ph\u1ea7n bao b\u00ec b\u1eb1ng gi\u1ea5y g\u1ee3n s\u00f3ng<\/li>\n<\/ul>\n\n\n\n

            It is particularly suitable for materials within the recommended grammage range of:<\/p>\n\n\n\n

            T\u1eeb 100 g\/m\u00b2 \u0111\u1ebfn 400 g\/m\u00b2<\/strong><\/p>\n\n\n\n

            C\u00e1c ti\u00eau chu\u1ea9n li\u00ean quan \u0111\u1ebfn th\u1eed nghi\u1ec7m n\u00e9n nh\u1ecbp ng\u1eafn<\/h2>\n\n\n\n

            The SCT-01 Short Span Compression Tester supports testing methods related to:<\/p>\n\n\n\n

            Ti\u00eau chu\u1ea9n<\/th>M\u00f4 t\u1ea3<\/th><\/tr><\/thead>
            TAPPI T826<\/a><\/td>Short span compression strength testing of paper and board<\/td><\/tr>
            ISO 9895<\/td>Compression testing method for paper and board materials<\/td><\/tr>
            DIN 54518<\/td>Compression testing requirements for paper products<\/td><\/tr>
            BS 7325<\/td>Ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m \u0111\u1ed9 n\u00e9n c\u1ee7a gi\u1ea5y v\u00e0 b\u00eca<\/td><\/tr>
            GB\/T 2679.10<\/td>Paper and board compression strength testing<\/td><\/tr>
            QB\/T 2386<\/td>Paper and packaging material testing requirements<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

            These standards provide recognized approaches for evaluating paper and board compression properties across different markets.<\/p>\n\n\n\n

            Choosing the Right Short Span Compression Tester<\/h2>\n\n\n\n

            When selecting equipment for short span compressive strength<\/strong> measurement, laboratories should consider:<\/p>\n\n\n\n

              \n
            • Testing accuracy and resolution<\/li>\n\n\n\n
            • Clamp design and alignment<\/li>\n\n\n\n
            • Compression control stability<\/li>\n\n\n\n
            • Software and data management capability<\/li>\n\n\n\n
            • Compatibility with required standards<\/li>\n\n\n\n
            • Manufacturer support and customization options<\/li>\n<\/ul>\n\n\n\n

              The SCT-01 provides a practical solution for companies requiring reliable compression data for packaging development, production monitoring, and laboratory quality assurance.<\/p>\n\n\n\n

              Cell Instruments also provides customized fixtures and testing solutions for specialized material evaluation requirements, helping customers adapt testing systems to unique applications.<\/p>","protected":false},"excerpt":{"rendered":"

              The TAPPI T826 test method is widely used for evaluating the short span compressive strength of paper and board materials, especially those used in container and box manufacturing. The test provides valuable information about the intrinsic compression performance of paper fibers by measuring the maximum compressive force a small test span can withstand before failure. […]<\/p>","protected":false},"featured_media":1646,"parent":0,"template":"","meta":{"_acf_changed":false},"standard-category":[],"class_list":["post-1645","standard","type-standard","status-publish","has-post-thumbnail","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.packtests.com\/vi\/wp-json\/wp\/v2\/standard\/1645","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.packtests.com\/vi\/wp-json\/wp\/v2\/standard"}],"about":[{"href":"https:\/\/www.packtests.com\/vi\/wp-json\/wp\/v2\/types\/standard"}],"version-history":[{"count":3,"href":"https:\/\/www.packtests.com\/vi\/wp-json\/wp\/v2\/standard\/1645\/revisions"}],"predecessor-version":[{"id":1663,"href":"https:\/\/www.packtests.com\/vi\/wp-json\/wp\/v2\/standard\/1645\/revisions\/1663"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.packtests.com\/vi\/wp-json\/wp\/v2\/media\/1646"}],"wp:attachment":[{"href":"https:\/\/www.packtests.com\/vi\/wp-json\/wp\/v2\/media?parent=1645"}],"wp:term":[{"taxonomy":"standard-category","embeddable":true,"href":"https:\/\/www.packtests.com\/vi\/wp-json\/wp\/v2\/standard-category?post=1645"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}