We usually call life paper with no liquid in it paper towels, which are dry paper towels. Wipes, on the other hand, are moist paper towels used to wipe the skin.
In our mind, the obvious difference between wipes and paper towels is that one contains water and the other does not. In fact, in addition to moisture, the most important difference between wipes and paper towels is the ingredients.
Many people think that wipes are made of the same fabric as a summer T-shirt, pure cotton or polyester, or some other raw material, but it's not that simple.
Paper towel is mainly made of wood pulp, grass pulp, cotton pulp and other household paper. And wet wipes according to raw materials are divided into two kinds: one is wet strength paper, one is non-woven fabric, most of the wet wipes are made of non-woven fabric, and then subdivided, raw material non-woven fabric mostly water thorn.
Spunlaced non-woven fabric is a high-pressure micro-water jet into a layer or multi-layer fiber net, so that the fibers intertwine with each other, so that the fiber net can be strengthened and have a certain strength, the obtained fabric is spunlaced non-woven fabric. Its fiber raw materials from a wide range of sources, can be polyester, nylon, polypropylene, viscose fiber, chitin fiber, microfiber, tencel, silk, bamboo fiber, wood pulp fiber, seaweed fiber and so on.
Wet strength paper, the so-called wet strength paper, refers to the paper with wet strength agent. Generally judge wet strength paper, there are the following standards: wet strength/dry strength (tensile strength) > 20%; Paper that retains a dry strength of more than 15% and resists breakage or dissociation when exposed to moisture or soaked in water.
In our life, most of the wipes are made of non-woven fabric, non-woven fabric is just a name, the production of non-woven fabric generally used raw materials are: polyester fiber, viscose fiber.
Wipes are not made only of polyester fiber or viscose fiber, but the manufacturer puts the raw materials into production in proportion according to the comprehensive consideration.
Polyester is a chemical fiber from petrochemical industry, which is not so soft and has a slippery feel. It is easy to get fuzz after wiping. Meanwhile, polyester has poor hydrophilicity, and more moisture will reside on the skin during the wiping process. At the same time, due to the poor hydrophilicity of polyester, the moisture in the wipes will be affected by gravity. After a period of time, the upper wipes will tend to be dry, and the water content of the lower wipes will increase, which will bring some inconvenience to the use.
After all polyester wipes are used up, the chemical fibers can hardly be degraded in the natural environment. Meanwhile, petroleum is a non-renewable resource, so the use of polyester should be reduced from the perspective of environmental protection and use experience. However, polyester is still very popular among low-cost wipes because of its cheap price and lower cost.
When the base material of all-polyester wipes is lit after drying, a large amount of black smoke and clumps will appear. This simple identification method provides a qualitative basis for the identification of whether the base material of wipes contains polyester
Viscose fiber is natural plant processing fiber. There are three common types, depending on the source of the ingredients.
Viscose fiber produced from cotton pulp raw material is pure cotton non-woven fabric, which is usually yellow in color and relatively common.
Viscose fiber produced by wood pulp raw materials, the color and color of this fiber will be bright, the texture of the cloth is very soft, the water retention ability is better, the domestic use is relatively few; The viscose fiber produced by bamboo pulp is bamboo fiber nonwoven fabric. The color of this cloth is yellowish and bright at the same time, which is less used in China.
The use of viscose fiber cloth wipes, in the natural environment will be faster natural degradation, so do not cause environmental pollution. The above three kinds of viscose fiber non-woven cloth can be completely burned after ignition, and there is no residue in the ashes. This method can be relatively easy to determine whether the wet towel substrate contains polyester.
Due to cost considerations and the comfort of wipes, polyester fiber and viscose fiber are used as raw materials for wipes in proportion, but the proportion is usually different. The lower the proportion of polyester, the higher the softness of non-woven fabric, the higher the cost of fabric.
Generally, the ratio of polyester adhesive is controlled around 5:5. At this time, the wipes feel moderately soft in use, and it is not easy to fuzz after wiping, because the water retention of adhesive is better than that of all-polyester wipes. Therefore, the wipes feel less wet under the condition of increasing the amount of water.
After drying, the substrate cloth will emit black smoke when lit by a lighter. According to the polyester content ratio, there is a certain proportion of hard lumps in the ash.
