Shenzhen Stone Paper Enterprise Ltd.
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YUPO Paper Characteristics and Physical Properties

YUPO paper is a synthetic paper that can be used to print a variety of products. Familiar with the basic performance of YUPO paper, it is very necessary to reduce unnecessary losses in the printing process.

YUPO synthetic paper consists mainly of polypropylene and contains calcium carbonate. In order to improve its printability, the surface of YUPO paper has been specially processed. The value measured by the contact angle method is generally about 40 dyne/cm.

At room temperature, the physical properties of YUPO paper are relatively stable. However, as a plastic film, YUPO paper will undergo significant changes in physical properties under relatively severe temperature changes. When the temperature rises from 20°C to about 30°C, the tensile strength and burst strength will decrease by about 5%. Conversely, when the temperature drops, YUPO paper will harden, tensile strength and burst strength will increase, and some performance indicators will have other changes. When the temperature is reduced from 25°C to around 0°C, the elongation rate is reduced by about 25%, which is particularly prominent on the YUPO paper along the grain direction. However, the folding endurance will not be significantly reduced until about minus 35°C. It is worth noting that sustained high temperatures can also have a significant effect on YUPO paper. High temperatures can cause deformation and shrinkage of YUPO paper. When the temperature is kept above 70°C, YUPO paper is prone to permanent deformation. Even if the cooling measures are taken afterward, it cannot be restored. Therefore YUPO paper is not suitable for applying laser printing. If aqueous solutions are used in printing, the process conditions must be strictly controlled during the drying process. Usually, measures such as reducing the water content in the solution as much as possible, reducing the conveying speed, increasing the air flow, etc. are used to achieve complete drying. In addition, the elastic characteristics of YUPO paper cannot be ignored. During transportation, excessive stacking, collision, and impact should be avoided. All of these stone paper suppliers may generate pressure and cause deformation of YUPO paper. In the cutting process, in addition to maintaining a sufficiently sharp edge, it is also necessary to avoid cutting in a stacked manner, otherwise when cutting, deformation due to pressure changes in the edge thickness of the cutting edge causes deformation of the upper and lower layers at the cutting position.
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