The gloss of paper is determined by the degree of flatness of the paper surface, which is related to the type of fiber, the degree of beating and calendering, the content ratio of the filler, the rubber, and the sizing method.
1, the surface smoothness of the paper surface smoothness of the paper, it represents when a certain area of ​​paper under a certain pressure, in the gap between paper and glass, through a certain amount of time required for air to Seconds (S) is the unit of calculation. The surface smoothness of various papers is different. Ordinary paper smoothness below 80S is a low smoothness paper, 80S or more is a medium smoothness paper, 300~600S is a high smoothness paper, if the coated paper has a smoothness of 800S, the paper surface gap is about 2.5μm. The smoothness of domestic 150gm2 special double-sided coated paper is 500S, while the same weight of coated paper abroad, the smoothness of more than 1000S. The domestically produced 150gm2 advanced art coating paper, with a smoothness of 1000 to 1500S, is the paper that achieves the highest level of smoothness in China.
The level of smoothness of paper is actually represented by the size of the gap on the surface of the paper. Therefore, the level of smoothness has a great influence on the gloss of the finished product. The paper with high smoothness has good contact with the ink and can ensure that the dots are completely reproduced and the finished product has a good gloss. After the ink is transferred to the surface of the paper. The surface roughness of the ink film formed on the paper is also relatively high. After the light is irradiated, a certain specular reflection is formed and a certain brightness is exhibited. On the other hand, poor smoothness, rough surfaced paper, and uneven imprinted ink film can only form diffuse reflections on light, and the finished product lacks luster.
2, the paper's ink absorption Paper's ink absorption, refers to the paper on the ink binder material absorption, the more rough paper, the greater the fiber gap, the stronger the absorption of the link material. The ink absorption of different types of paper is different.
When the ink absorption of the paper is too large, and the ink layer is dried on the paper surface, the ink binder material is absorbed in a large amount, and the pigment and other particles float on the surface of the print to form a diffuse reflection, so that no gloss can be produced. The ink absorption of the paper is too small, the penetration of the linking material is small, and a printed product with a vivid color and high gloss can be obtained, but at the same time, it is prone to phenomena such as slow drying, easy adhesion, and crystallization.
For coated paper (coated paper), there are two main factors affecting ink absorption: The first is the type and amount of adhesive used in the coating. The lower the ratio of adhesive to the pigment, the lower the ink absorption of the paper. The higher; the lower the coating concentration, the easier the adhesive and water in the coating can penetrate into the thick paper, reducing the amount of adhesive in the coating and increasing the ink absorption. Second, pigments in the paint and fineness of the particles are also related to ink absorption. The lower the pigment particles are, the less likely the rubber in the coating is to be transferred to the paper base: the coarser the pigment particles, the larger the particle gap. The greater the absorbency of the ink, the worse the gloss effect of the print.
The determination of the ink absorption of the paper is the use of a calibrated ink-absorbing tube. The quantitative test ink is coated on the test sample sheet. After reaching the prescribed time, the remaining ink on the paper is quickly wiped off with cotton or a clean soft cloth. In this way, the depth of the ink varies with the absorption of the paper, and then the reflectance of the paper is measured using a reflectometer. The reflectivity is low and the absorption is strong; otherwise, it is weak. Usually expressed as a percentage of A.
3, the gloss of the paper The quality of the gloss of the paper itself also determines the size of the print gloss. How the gloss of the coated paper surface depends on the light-enhancing materials used in papermaking and the precision of the paper. Lightening materials include aluminum stearate and paraffin wax. The finishing method is super calendering. Paper produced by the above method has a smooth surface.
The combined effect of glossiness and ink absorption of the paper is expressed as the surface efficiency of the paper. Specifically, the surface efficiency of the paper can be represented by the average value of gloss and ink absorbency.
The cotton pad is generally a small piece of cotton about 5-6 cm in length that is pressed from cotton or paper pulp. The main purpose is to remove makeup, and it can also be used for makeup.
There are basically two types of cosmetic cotton materials: absorbent cotton and non-woven fabrics. These two materials have their own advantages and disadvantages, and you can choose according to your needs.
Absorbent cotton
The cotton pad is thick and soft to the touch, and requires a large amount when used for applying toner; sometimes it has the phenomenon of desquamation and weak water absorption.
Non-woven fabric
This kind of cotton pad is relatively thin and has a coarser touch, but because of its strong water absorption, the amount of toner is relatively small.
Choice of cotton pads
1. Pour the standard amount of toner 2ML on the cotton pad to test the water absorption of the cotton pad. Test standard: see if there is any leakage of toner.
2. Squeeze out the lotion from the cotton pad that has absorbed the water to see how much water can be released. Test standard: how much ML lotion to squeeze out.
3. Wipe the back of the hand with a wet cotton pad for 20 times to see if there is any lint residue. Test standard: See how much cotton wool remains on the back of the hand.
Result analysis:
1. High-quality cotton pads need to have excellent water absorption capacity and will not drip at all.
2. It must also have a super water release capacity, and no cotton wool will be left after use.
Cotton Pads Always Used As Reusable Makeup Remover Pads,Makeup Remover Cotton Pads,Facial Cotton Pads,Cotton Pads For Makeup Removal etc.
Reusable Makeup Remover Pads,Makeup Remover Cotton Pads,Facial Cotton Pads,Cotton Pads For Makeup Removal
Jilin Xiangqi Technology Co., Ltd , https://www.xqccosmetics.com