الورق المطلي عبارة عن ورق طباعة عالي الجودة معروف بسطحه عالي الجودة وتأثير الطباعة. It is usually used for the printing of high-quality books, المجلات, ألبومات الصور, greeting cards and other cultural publications, as well as high-end packaging, business cards and so on. In the manufacturing process of coated paper, a coating process is usually used to coat the surface of high whiteness paper with a layer of adhesive and white filler, so as to obtain a smooth surface and printing effect.

ما هو الورق المطلي وما الأداء الذي يجب اختباره?

The detection of coated paper needs to pay attention to the following main properties:

سمك وكثافة: the thickness and density of coated paper will directly affect its stability and printing effect. يمكن قياس السماكة والكثافة عن طريق قياس سمك الورق, الكثافة والوزن الأساسي.

نعومة: Coated paper needs to have a very smooth surface to ensure clarity and detail of text and images. يمكن إجراء اختبار النعومة عن طريق قياس نعومة سطح الورق, ارتفاع الريشة وتاج اللوحة وغيرها من المؤشرات.

بياض: Coated paper needs to have a certain whiteness to ensure the color restoration and contrast of the printed text and image. يمكن اكتشاف البياض عن طريق قياس اللون واختلاف لون الضوء المنعكس عن الورقة.

لمعان: Coated paper needs to have a certain gloss to enhance the visual effect of the print. يمكن اكتشاف اللمعان عن طريق قياس انعكاس سطح الورق.

قوة: Coated paper needs to be strong enough to withstand the tension and pressure in the printing process. يمكن إجراء اختبار القوة عن طريق قياس قوة الشد, قوة تمزيق وقوة ضغط الورق.

أداء الطباعة: coated paper needs to have certain printing performance to ensure the printing quality of printed matter. يمكن اكتشاف أداء الطباعة عن طريق قياس امتصاص الورق للماء, امتصاص النفط, وضوح الطباعة, تقليل اللون ومقاومة تلوث الطباعة.

حماية البيئة: coated paper needs to meet environmental standards, لا يحتوي على مواد ضارة, لا تلوث للبيئة. Environmental protection can be tested by measuring paper volatile organic compounds, معادن ثقيلة, chloride ions and fluorescence

Light brightening agent and other indicators to carry out.

قوة الترابط: The surface of coated paper is coated with a layer of adhesive and white filler, so its bonding strength also needs to be tested to ensure that the filler on the surface of the paper is not easy to fall off. The adhesion strength can be measured by measuring the peeling strength, cutting strength and ring compression strength of the paper.

Copper coating: copperplate paper is characterized by its surface through a layer of copper and polishing treatment, in order to obtain a good gloss and smoothness, so the quality and uniformity of copperplate paper coating also need to be tested. The detection methods include thickness measurement, surface quality detection and microstructure analysis.

The above performance indicators are the key content of coated paper testing. ستؤثر متطلبات ومعايير الاستخدام المختلفة أيضًا على معايير وطرق اختبار الورق.