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纸是记载和传播文化的重要工具,它与人们的文化生活有着密切的关系,每天都有大量的纸张用于印刷书、报、杂志和书写等,是工业、农业、商业、交通运输等各行各业所必须的物品。纸张的质量优劣,直接影响着印刷质量和使用的效果,所以对纸张的质量检验,是保证和提高纸张质量的一个手段。检验纸张,有用仪器测定和用外观检验两种方法,用外观检验是由感观接触来鉴别的一种方法。这种方法可以检验下面的一些纸病。一、坐埃。尘埃是指纸页的表面,有用
Paper is an important tool for documenting and disseminating culture. It is closely related to people’s cultural life. Every day, a large amount of paper is used for printing books, newspapers, magazines and writing. It is a product of industry, agriculture, commerce, transportation, etc. The necessary items in every business. Paper quality advantages and disadvantages, a direct impact on the printing quality and the use of the effect, so the paper quality inspection is to ensure and improve the quality of paper as a means. Test paper, useful instrument determination and the appearance of the test using two methods, the appearance of the test is by sensory contact to identify a method. This method can test some of the following paper disease. First, sit Egypt. Dust refers to the surface of paper, useful