Waterproof performance of non woven polypropylene fabric
What is non woven polypropylene fabric?
"PP non woven fabric (also known as non woven fabric is made of polypropylene (PP material, named non woven) Granulated materials are produced by one-step continuous process of high-temperature melting, wire spraying,
wire laying, hot pressing and coiling. It is called cloth because of its appearance and some properties.
PP non woven fabric means non-woven fabric made of PP fiber. Due to the nature of PP itself, the cloth finally showed high strength, but poor hydrophilicity. Generally, the process flow of ppnw is spinning into a net and hot rolling reinforcement.
General ppnw is widely used, such as packaging bags, surgical protective clothing, industrial cloth, etc. PP non-woven fabric (also known as non-woven fabric) is produced by using polypropylene (PP material) pellets as raw materials, through high-temperature melting, spinning, wire laying, hot pressing and coiling in a continuous one-step process. It is called cloth because of its appearance and some properties.
However, they are made of chemical fibers and plant fibers on wet or dry paper machines with water or air as the suspension medium. Although they are not woven, they are called non-woven fabrics.
Non woven fabric is a new generation of environmental protection material, which has the advantages of good strength, breathable and waterproof, environmental protection, flexibility, non-toxic and tasteless, and low price.
It is a new generation of environmental protection material, which is water repellent, breathable, flexible, non combustion supporting, non-toxic and non irritating, and rich in color. If the material is placed outdoors and decomposed naturally, its maximum life is only 90 days. If it is placed indoors and decomposed within 8 years, it is non-toxic, tasteless and free of any residual substances during combustion, so it does not pollute the environment.
Therefore, environmental protection comes from this.
The non woven fabric products are rich in color, bright and bright, fashionable and environmental friendly, widely used, beautiful and generous. The patterns and styles are various, and the products are light, environmentally friendly and recyclable.
They are internationally recognized as environmental protection products for protecting the earth's ecology. It is suitable for agricultural film, shoe-making, leather making, mattress, quilt, decoration, chemical industry, printing, automobile, building materials, furniture and other industries, as well as clothing lining, medical and health disposable surgical clothing, mask, cap, bedspread, hotel disposable tablecloth, beauty, sauna, gift bags, boutique bags, shopping bags, advertising bags and so on.
Environmental protection products, widely used, affordable.
Is Polypropylene Nonwoven Fabric Waterproof?
The non woven fabric is not waterproof，In a strict sense, to make non-woven fabric waterproof function is not realistic, because the non-woven fabric material is generally fabric scrap，is the category of cloth, Not only that, it also has certain permeability. so, it needs later processing to be developed into a waterproof non woven fabric waterproof products. In general, to make it waterproof, to be integrated with plastic, you can cover the surface with a film or add a layer of PVC material on the surface, so as to achieve waterproof, moisture-proof and oil-proof effects.and the process we are using is generally coated or film-covered process, in addition to non-woven products, the plastic raw material is melted and then bonded to the non-woven fabric by the coating process, which not only enhances the service life of the non-woven fabric, but also makes it waterproof, produced a new product a waterproof non-woven fabric, we also call it non-woven fabric film.
Perhaps many people know that non woven fabric is an environment-friendly breathable material, under the natural environment is relatively easy to decompose, usually non-woven bag factory are directly used this fabric to produce products, the general printing process has silk screen or offset printing, these two printing processes on non-woven fabric no special changes. Non-woven fabric laminating is a production process different from screen printing, it is characterized by printing patterns can achieve photo-level effect, can print a variety of complex color patterns, it is a non-woven fabric in the surface covered with a layer of PP film, so non-woven fabric in the firmness has also been greatly improved, but also to ensure that wear-resistant, strong yarn, and non-woven fabric can also play a waterproof feature, the printed pattern on its surface will not fade with washing. Therefore, the actual effect is this layer of film, we usually use those eco-friendly bag pattern will not fade, but also waterproof, to a large extent, is to rely on it to play a real role in this.