folding endurance

Method for determining the folding endurance of photographic film and film base

GB/T9858-1988片基与胶片耐折度的测定方法

Folding endurance : Measure of deterioration of paper along a constantly repeated fold .

耐折度：量度纸张对经常重复屈折的损坏程度。

Testing method for folding endurance of paper and paperboard by schopper tester

用朔柏测试仪测试纸的折痕持久性的标准试验方法

Testing method for puncture of paperboard Paper and board & Determination of folding endurance ( MIT tester )

GB/T2679.5-1995纸和纸板耐折度的测定（MIT耐折度仪法）

Bursting strength tester for papers schopper folding endurance tester

纸类抗爆裂强度测试器纸张耐折强度测试仪

Several starch derivatives was prepared as surface sizing agent , and then compared two indicators including ring crush strength and folding endurance .

制备出几种淀粉衍生物表面施胶液，并对比了施胶后瓦楞纸的环压强度以及耐折度这两项指标。

Schopper folding endurance tester alternating bending strength

纸张耐折强度测试仪

The results showed that there are obvious effects of APAM-8701 on pulps in improving fiber bonding strength , especially folding endurance .

结果表明APAM对纸浆的纤维结合强度有明显的作用，尤其是耐折度。

The specimen 's tensile index , burst index and folding endurance were higher than the specimen with bamboo CTMP or mixture waste paper pulp as filler furnish .

厘竹CTMP浆和混合废纸浆配抄出现协同效应，样品的抗张指数、耐破指数和耐折度高于两种浆各自做芯浆的样品；

M2 / g , folding endurance is 270 times , density is 0.49g/cm3 . Generally speaking , they are both suitable for SPF-AQ process .

m2/g，耐折度270次，紧度0.49g/cm3。总的来说，四倍体刺槐比较适合SPF-AQ法制浆。

Measurements of folding endurance , internal tearing resistance , brightness , and copper number or average degree of polymerization were strongly recommended for papers before and after accelerating aging .

建议测量纸张老化前后的耐折度、撕裂度、白度和铜价或聚合度。

Moreover , the tensile strength index , breaking length , folding endurance and burst index of AS-AQ pulp were higher than those of KP pulp . However , the tearing index was opposite .

浆的抗张指数、裂断长、耐折度和耐破指数都要好于KP浆，但是在撕裂指数上KP浆要优于ASAQ浆。

The following determinations were made on the initial and aged samples : MIT folding endurance , internal tearing resistance , bursting strength , breaking length , brightness , copper number and average degree of polymerization .

纸张老化前后测试的性能为MIT耐折度、撕裂度、耐破度、裂断长、白度、铜价和聚合度。

With filler furnish 's beating degree going up from 30 ° SR to 50 ° SR , specimens ' tensile index , burst index and folding endurance went up , other strength properties had different changes with different specimens .

随着芯浆打浆度从30°SR上升到50°SR，白板纸的抗张指数、耐破指数和耐折度不断提高，其余强度指标随样品的不同而呈现出不同的变化趋势。

M2 / g , folding endurance is 290 times , density is 0.48g / cm3 , while quadruple black locust ( 4 years ) pulp can achieve good paper properties , around 41.5 ° SR , tensile index is 70.9N .

m2/g，耐折度290次，紧度0.48g/cm3。四年生四倍体刺槐在41.5°SR附近，纸浆具有较好的物理性能，抗张指数70.9N。

The wet strength of the cotton pulp can reach 39.8 % , folding endurance is 3435 ( double times ) and breaking length is 7.43 km when the dosage of EA / WEP / PAE is 1.0 % and the retention aid APAM is 0.3 % .

当改性PAE用量为1.0%，助留剂APAM加入量0.3%（相对绝干浆料），浆料pH值7~8时，成纸的湿强度可达39.8%，耐折度达3435次，裂断长达7.43km。