One, about P-PVA As everyone knows, PVA is a very wide application of environmentally friendly materials, widely used in papermaking, textile, paint, adhesives, chemical and other industries, with the processing of water soluble film, biaxial stretching film and containers and other products, is completely biodegradable plastic packaging materials, biodegradability, barrier resistance, antistatic property, oil resistance, mechanical and physical properties and light transmittance performance is very excellent, by domestic and foreign scientific research institutions and enterprises attach great importance to. But as a result of polyvinyl alcohol material difficult to use conventional method for thermoplastic processing, thus limiting the application. After years of efforts, engineering and technical personnel to develop the success can be molten thermoplastic processing polyvinyl plastic resin (P-PVA, P or plastic properties of the acronym, PVA polyvinyl alcohol, the P-PVA is plasticity can melt processing of polyvinyl alcohol resin abbreviation), making it more extensive application of new packaging materials. The product is now available in our company production. P-PVA can dry thermoplastic molding, completely suitable for use with existing plastic machinery and equipment through blow molding, injection molding, method of producing water-soluble film and container, greatly reduces the production cost, so that the material of the scope of application and market prospects even brighter, especially its great advantages in cost-effective, in a variety of plastic packaging the material has a very strong competitive edge. In two, P-PVA and product characteristic and application: P-PVA by thermoplastic processing method can produce water soluble film, biodegradable films and containers, biaxially oriented film and other products, its characteristics and scope of application are as follows: 1, water soluble film: the water soluble film mainly adopts the wet production of raw materials, the polyvinyl alcohol with a certain amount of additives dissolved in water after the transfer into a paste attached to equipment mold surface after drying to form film, this method is of high energy consumption, low production efficiency, poor product performance, high cost, poor economic benefits. The film blowing equipment available P-PVA by thermoplastic processing directly made into film, commonly known as dry. This method of production of water soluble film has high production efficiency, good product performance, low energy consumption, low comprehensive cost, obvious economic benefit, is a promising new membrane materials. The product is mainly used in pesticide, fertilizer, paint, cleaning agents, water treatment agent, precision instruments, mineral additive package and medical packaging laundry bags, light textile embroidery printing, metal surface protection film. 2, biodegradable films and containers: existing photodegradation membrane and starch biodegradable film is the big plastic cracking into tiny particles, did not achieve complete degradation. Because the degradation of material is expensive, difficult to popularize application. Based on the P-PVA processing method and formula for adjusting, can be made of biodegradable packaging container, add the appropriate materials at a lower price, can be made into agricultural film and other disposable biodegradable film. On the comprehensive cost competitive products. 3, two-way stretch film: our country existing nylon ( BOPA ), polyester ( BOPET ), polypropylene ( BOPP ) and other three kinds of two-way stretch film, its capacity of 100000 tons,800000 tons,3000000tons of. Due to degradation of the application more and more restricted, especially in Europe and the United States have banned non-biodegradable plastic packaging use case, use degradable polyvinyl alcohol ( PVA ) two-way stretch film ( BOPVA ) alternative non-degradable BOPA, BOPET, BOPP appears especially urgent. The physical properties of BOPVA is better than BOPP, BOPET, barrier properties than BOPA, plus it is environment-friendly biodegradable material, its scope of application and market space is very vast. The product has high transparency, gloss, mechanical strength and can be printed, is used for cigarette, printing, and other daily necessities of life packaging for the ultra thin film. In three, P-PVA products and processing characteristics and physicochemical index: In 1, P-PVA can be applied to all kinds of plastic equipment for thermoplastic processing, in the processing of water soluble film, biodegradable film ( container ) and biaxial stretching film can use old equipment, no need to add any special equipment. In2, with the P-PVA dry blow to replace the wet casting processing of water soluble film only according to the market demand, small investment for ordinary film blowing equipment. In 3, P-PVA thermoplastic processing temperature range of 170℃ ~210 ℃. In 4, P-PVA in addition to its raw materials all kinds of excellent performance, the film has a strong environmental protection, no pollution to food, biodegradable, and its tensile property, transparency, pinhole resistance, easy printing performance highlights. The product also to hydrocarbon ( benzene, gasoline ), chlorinated hydrocarbons, ethers, esters of plant oil with good tolerability. In 5, P-PVA has good workability, processed products of physicochemical index table:
In four, P-PVA preservation and storage: 1, should be stored in a cool and dry place, away from fire. 2, to prevent damp or water, product is not exhausted to the packaging bag tied. In 3, the product moisture must use desiccant dryer for drying, the drying temperature was 100-110 ℃, the drying time is 2-3 hours. Five, VCI film: Long-acting gas phase rust-proof series product is after years of concentrated research and development of environmental protection quality of packaging materials. The anti-rust products for a period of 1-3 years,3-5years,5-10years or even longer, can be used for all types of metal materials and related products packaging, rust-proof performance has reached the international advanced level; the green products, recyclable. Products by gas phase antirust principle is added to a product in the gas phase rust-proof material ( VCI ), through a closed form for the packaged, at normal temperature and pressure can be directly gasifying sublimation, in a sealed environment to saturated steam pressure, gas phase rust-proof material ( VCI ) contains the embodiment and antirust molecules functional group, wherein large functional group adsorbed in the surface of the articles to be packed, small groups by filling in a large functional group in the gap, forming a layer of molecular protective film, in hypoxia, low humidity in the space to prevent material from corrosion, sublimated gas can be long-term effect on the wrapped object surface, long-lasting anti-rust function. Products are mainly applicable scope : military products, especially firearms and ammunition; mechanical parts, medical machinery, precision instruments, iron castings, aviation parts; a variety of hardware, powder metallurgy parts; all kinds of electric tools, measuring tools, cutting tools; bearings, clutch, motor, valve; automobile, motorcycle parts and components; all kinds of metal materials.