{"id":2894,"date":"2026-02-05T01:34:54","date_gmt":"2026-02-05T01:34:54","guid":{"rendered":"https:\/\/www.materialstests.com\/products\/wtd-01-bending-resistance-tester\/"},"modified":"2026-02-05T01:34:54","modified_gmt":"2026-02-05T01:34:54","slug":"wtd-01-bending-resistance-tester","status":"publish","type":"products","link":"https:\/\/www.materialstests.com\/vi\/products\/wtd-01-bending-resistance-tester.html","title":{"rendered":"M\u00e1y th\u1eed \u0111\u1ed9 b\u1ec1n u\u1ed1n WTD-01"},"content":{"rendered":"

1. Introduction of Bending\u00a0resistance tester<\/a><\/h2>\n

Based on the two-point loading principle,\u00a0\u00a0Bending Resistance Tester<\/strong>\u00a0is used for determining the bending resistance of paper and board. It applies to the measurement of the bending resistance within the range 20 mN to10000 mN. It is not applicable to corrugated board but can be applicable to the components of such board.<\/p>\n

 <\/p>\n

2. Terms<\/h2>\n

Bending force:<\/strong>\u00a0force required to bend a rectangular test piece clamped at one end.<\/p>\n

Bending resistance:\u00a0<\/strong>mean of all valid readings of the measured bending force calculated. Bending resistance is expressed in newtons or millinewtons.<\/p>\n

Bending length:<\/strong>\u00a0constant radial distance between the clamp and the position on the test piece at which the force is applied<\/p>\n

Bending angle:\u00a0<\/strong>angle through which the clamp rotates while moving from its initial position to the position at which the bending resistance is measured<\/p>\n

Free length:<\/strong>\u00a0total length of the test piece that projects from the clamp<\/p>\n

\"M\u00e1y<\/p>\n

3. Why do you need a Bending Resistance\u00a0Tester?<\/h2>\n

Paper and board bending stiffness is a measure of the material’s resistance to bending or deformation. Bending stiffness is crucial in applications where the material needs to maintain its shape or resist deformation, such as in packaging, printing, and various paper-based products. High bending stiffness can contribute to better performance in terms of rigidity and stability.<\/p>\n

 <\/p>\n

4. Technical Features<\/h2>\n

Multi-angle Measurement:<\/strong>\u00a0Allows for simultaneous setup of up to 3 test angles. Commonly used test angles include 7.5\u00b0, 15\u00b0, and 30\u00b0.<\/p>\n

Bending Time:<\/strong>\u00a0Offers the flexibility to choose different bending times based on the material’s elasticity.<\/p>\n

User Interface:<\/strong>\u00a0Utilizes a 7-inch touchscreen interface, providing visual menu operation.<\/p>\n

Print Output:<\/strong>\u00a0Equipped with a modular integrated thermal printer, quick and easy printing of test results.<\/p>\n

\"M\u00e1y<\/p>\n

5. Test Principle<\/h2>\n

Measurement of the force required to bend a test piece clamped at one end through a specified angle, normally 15\u00b0, where the force is applied at a specified bending length (50 mm or 10 mm). The bending resistance is calculated as a mean of the measured forces.<\/p>\n

 <\/p>\n

6. Application<\/h2>\n

Packaging:<\/strong>\u00a0Bending stiffness is important for ensuring that packaging materials maintain their shape and provide adequate protection to the contents.<\/p>\n

Printing:<\/strong>\u00a0In printing processes, especially high-speed printing, paper with appropriate bending stiffness is desirable to prevent issues such as paper jams.<\/p>\n

Paperboard Products:\u00a0<\/strong>Products like cartons and display boards benefit from having sufficient bending stiffness for structural integrity.<\/p>\n

 <\/p>\n

7. Specifications<\/h2>\n
\n\n\n\n<\/colgroup>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Ph\u1ea1m vi th\u1eed nghi\u1ec7m<\/td>\n\uff080~10000\uff09mN<\/td>\n<\/tr>\n
Ngh\u1ecb quy\u1ebft<\/td>\n0.1 mN<\/td>\n<\/tr>\n
\u0110\u1ed9 ch\u00ednh x\u00e1c<\/td>\n\u00b1 0.5% F.S.<\/td>\n<\/tr>\n
Bending Length<\/td>\n5, 10, 15, 20, 25, 30, 40, 50 mm<\/td>\n<\/tr>\n
Bending Angle<\/td>\n1 \u00b0~ 90 \u00b0<\/td>\n<\/tr>\n
Bending Speed<\/td>\n0.5~50 \u00b0 \/ s<\/td>\n<\/tr>\n
T\u1ed1c \u0111\u1ed9 v\u00e0 \u0111\u1ed9 ch\u00ednh x\u00e1c<\/td>\n\u00b1 0.1\u00b0<\/td>\n<\/tr>\n
Clamp Type<\/td>\nManual<\/td>\n<\/tr>\n
Sample Thickness<\/td>\n0.01~5mm<\/td>\n<\/tr>\n
Sample Size<\/td>\n38*70mm<\/td>\n<\/tr>\n
Screen<\/td>\n7 in Color Touch Screen<\/td>\n<\/tr>\n
Printer<\/td>\nThermal Type<\/td>\n<\/tr>\n
C\u00f4ng su\u1ea5t<\/td>\n220 V, 50 Hz<\/td>\n<\/tr>\n
K\u00edch th\u01b0\u1edbc<\/td>\n380 \u00d7 390 \u00d7 255 mm LHW<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

 <\/p>\n

\n\n\n\n<\/colgroup>\n\n\n\n\n\n\n
Sampling Size<\/td>\n(70*38)mm Stiffness sample\uff1b<\/td>\n<\/tr>\n
\uff0838*36\uff09Crease stiffness sample<\/td>\n<\/tr>\n
Parallelism<\/td>\n\u22640.015mm<\/td>\n<\/tr>\n
Sampling Thickness<\/td>\n(0.1~1.2)mm<\/td>\n<\/tr>\n
K\u00edch th\u01b0\u1edbc<\/td>\n300*90*90mm<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

 <\/p>\n

8. Standard<\/h2>\n

GB\/T 2679\u00b73, GB\/T 22364, GB\/T 23144, QB\/T5559, ISO 5628, ISO 2493-1, TAPPI T 556, DIN 53121, BS 3748, AS\/NZ 1301-4535, SCAN P29<\/p>\n

 <\/p>\n

9. Configuration<\/h2>\n

a) C\u1ea5u h\u00ecnh ti\u00eau chu\u1ea9n:\u00a0WTD-01 Bending Stiffness Tester<\/strong>, paper roll, manual, calibration certificate, power cord.<\/p>\n

b) Optional configuration: standard weight, loadcell.<\/p>\n

\"M\u00e1y<\/p>\n

10. FAQs<\/h2>\n

What are the factors that influence the bending stiffness of paper and board?<\/strong><\/p>\n

Several factors can influence the bending stiffness of paper and board. Here are key factors that play a role in determining the bending stiffness of these materials:<\/p>\n

1.\u00a0Material Thickness:<\/strong>\u00a0Generally, thicker materials exhibit higher bending stiffness. The thickness of paper or board is a significant factor affecting its ability to resist bending.<\/p>\n

2.\u00a0Fiber Type and Orientation:\u00a0<\/strong>The type of fibers used in the paper or board, as well as their orientation, can impact bending stiffness. Longer and more aligned fibers tend to contribute to higher stiffness.<\/p>\n

3.\u00a0Formation of the Sheet:\u00a0<\/strong>The way fibers are distributed and formed into a sheet can affect bending stiffness. Uniform and well-oriented fiber distribution can contribute to enhanced stiffness.<\/p>\n

4.\u00a0Moisture Content:<\/strong>\u00a0The moisture content of paper and board can influence their flexibility and, consequently, their bending stiffness. Higher moisture levels may reduce stiffness.<\/p>\n

5.\u00a0Caliper Uniformity:<\/strong>\u00a0Caliper refers to the thickness of the material. A uniform caliper across the sheet contributes to consistent bending stiffness.<\/p>\n

6.\u00a0Chemical Additives:<\/strong>\u00a0The presence of certain chemicals, coatings, or additives in the paper or board formulation can affect its mechanical properties, including bending stiffness.<\/p>\n

7.\u00a0Temperature and Humidity:<\/strong>\u00a0Environmental conditions, such as temperature and humidity, can impact the properties of paper and board. Changes in these conditions may alter the bending stiffness.<\/p>\n

8.\u00a0Pressing and Drying Processes:\u00a0<\/strong>The methods used during pressing and drying in the papermaking process can influence the internal structure and, consequently, the bending stiffness of the final product.<\/p>\n

9.\u00a0Pulp Composition:<\/strong>\u00a0The type and blend of pulp used in papermaking play a crucial role. Different pulps have varying fiber lengths, which can affect bending stiffness.
\nCoating and Surface Treatments: Coatings or treatments applied to the surface of paper or board can influence its mechanical properties, including bending stiffness.<\/p>\n

10.\u00a0Density of the Material:<\/strong>\u00a0The density of the paper or board can affect its bending stiffness. Higher density often correlates with increased stiffness.<\/p>\n

 <\/p>\n

N\u1ebfu qu\u00fd kh\u00e1ch c\u00f3 nhu c\u1ea7u mua h\u00e0ng, xin vui l\u00f2ng\u00a0li\u00ean h\u1ec7 v\u1edbi ch\u00fang t\u00f4i<\/a>\u00a0v\u00e0\u00a0Cell Instruments<\/a>\u00a0s\u1ebd mang \u0111\u1ebfn cho qu\u00fd kh\u00e1ch nh\u1eefng s\u1ea3n ph\u1ea9m l\u00e0m qu\u00fd kh\u00e1ch h\u00e0i l\u00f2ng.<\/p>\n

\"M\u00e1y<\/a><\/p>\n

N\u1ebfu qu\u00fd kh\u00e1ch mu\u1ed1n bi\u1ebft th\u00eam th\u00f4ng tin v\u1ec1 s\u1ea3n ph\u1ea9m n\u00e0y, xin vui l\u00f2ng li\u00ean h\u1ec7 v\u1edbi ch\u00fang t\u00f4i. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 s\u1ea3n ph\u1ea9m ph\u1ed5 bi\u1ebfn kh\u00e1c m\u00e0 ch\u00fang t\u00f4i g\u1ee3i \u00fd cho qu\u00fd kh\u00e1ch:\u00a0Tissue Thickness Tester<\/a>,\u00a0Paper and Board Thickness Tester<\/a>,\u00a0Ng\u01b0\u1eddi ki\u1ec3m th\u1eed container<\/a>,\u00a0ph\u01b0\u01a1ng ph\u00e1p th\u1eed \u0111\u1ed9 d\u00e0y v\u1ea3i<\/a>,\u00a0T\u1ea7m quan tr\u1ecdng c\u1ee7a m\u00e1y \u0111o \u0111\u1ed9 d\u00e0y v\u1ea3i<\/a>,\u00a0nh\u00e0 s\u1ea3n xu\u1ea5t m\u00e1y ki\u1ec3m tra \u0111\u1ed9 u\u1ed1n cong Gelbo<\/a>,\u00a0Nh\u00e0 s\u1ea3n xu\u1ea5t m\u00e1y ki\u1ec3m tra \u0111\u1ed9 u\u1ed1n Gelbo Flex<\/a>,\u00a0Tissue Thickness Tester manufacturer<\/a>,\u00a0Paper Board Tester manufacturer<\/a><\/p>","protected":false},"excerpt":{"rendered":"

1. Introduction of Bending\u00a0resistance tester Based on the two-point loading principle,\u00a0\u00a0Bending Resistance Tester\u00a0is used for determining the bending resistance of paper and board. It applies to the measurement of the bending resistance within the range 20 mN to10000 mN. It is not applicable to corrugated board but can be applicable to the components of such […]<\/p>","protected":false},"featured_media":0,"parent":0,"template":"","meta":{"_acf_changed":false},"products-categories":[1468],"productstags":[1435,1474,1475,1476,1477,1478,1479],"standard-category":[],"class_list":["post-2894","products","type-products","status-publish","hentry","products-categories-paper-board-tester","productstags-gelbo-flex-resistance-tester","productstags-hydrolytic-resistance-of-glass-grains","productstags-ink-layer-abrasion-resistance-tester","productstags-needle-puncture-resistance","productstags-needle-puncture-resistance-test","productstags-needle-puncture-resistance-test-for-rubber-stopper","productstags-needle-puncture-resistance-test-for-vial-stopper"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.materialstests.com\/vi\/wp-json\/wp\/v2\/products\/2894","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.materialstests.com\/vi\/wp-json\/wp\/v2\/products"}],"about":[{"href":"https:\/\/www.materialstests.com\/vi\/wp-json\/wp\/v2\/types\/products"}],"version-history":[{"count":0,"href":"https:\/\/www.materialstests.com\/vi\/wp-json\/wp\/v2\/products\/2894\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.materialstests.com\/vi\/wp-json\/wp\/v2\/media?parent=2894"}],"wp:term":[{"taxonomy":"products-categories","embeddable":true,"href":"https:\/\/www.materialstests.com\/vi\/wp-json\/wp\/v2\/products-categories?post=2894"},{"taxonomy":"productstags","embeddable":true,"href":"https:\/\/www.materialstests.com\/vi\/wp-json\/wp\/v2\/productstags?post=2894"},{"taxonomy":"standard-category","embeddable":true,"href":"https:\/\/www.materialstests.com\/vi\/wp-json\/wp\/v2\/standard-category?post=2894"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}