Touch Screen Type Paper Board bending stiffness tester(HD-A554)is a material bending tester independently developed by Haida.It has a wide range of testing applications and can perform four-point bending tests on materials such as mobile phones,tablet computers,liquid crystals,photovoltaic glass and plastics.
Test principle:Use standard span and weights with standard weights at both ends to detect the height of corrugated cardboard transverse and longitudinal deformation,and calculate the flexural strength of the sample through the calculation formula set internally.
四点抗弯测试仪（HD-A554)是由海达自主研发的材料抗弯曲检测仪，测试应用广，可对手机、平板电脑、液晶、光伏玻璃和塑料等材料进行四点抗弯曲试验。
测试原理：利用标准跨度、两端放置标准重量的砝码来检测瓦楞纸板横向和纵向变形的高度，通过内部设定的计算公式从而求样品抗弯强度。
The test sample of the machine is cardboard(A,B,C&E flutes),and the sensor automatically sets the zero point to compensate for different thicknesses of cardboard.The test limit length is adjustable from 50-300mm,using stepper motor,left and right ball screws,the test length can be automatically adjusted by the machine itself.
机器的测试样品为纸板（A,B,C&E楞），通过传感器自动设置零点补偿不同厚度的纸板。试验限度长度为50-300mm可调，采用步进电机，左右滚珠丝杆，测试长度可以用机器本身自己自动调整。
In addition,this machine is also the designated equipment of IKEA,a world-renowned enterprise,and the equipment has achieved the patent in China top of the equipment.
此外，该机器也是作为世界知名企业宜家的指定设备，并于2014年申请了国家，成为设备届的佼佼者。