Surface anti-corrosive ventilating type nanomaterial industrial paper packing bag and its application

Abstract

This invention is about a packing bag for industrial paper, to be exact, this packing bag is made of nanophase materials and its surface is permeable but antiseptic. Inside the bag is plastered a layer of film in which some tiny holes are made from internal to external. The film is made of polythene, polypropylene and polythene or polypropylene containing silica hydrated. This invention has such following advantages: 1) better antisepsis, because the invention films a kind of high molecular material( high pressure polythene or polypropylene) onto the surface of a packing bag for average paper and forms into a new type of compound paper-packing material, it is a better and more effective solution to antisepsis; 2) that the bag has a good air delivery from inside to outside and excellent feasibility, so it improves the mechanic intensity of brown packing paper and waterproofing and damp proofing; 3) its film is even spilled.

Description

technical field [0001] The invention relates to an industrial paper packaging bag, in particular to a surface anti-corrosion air-permeable nano material industrial paper packaging (valve port) bag and its application. Background technique [0002] At present, there is no paper packaging (valve port) bag capable of packaging PH=3-4 and PH=9-10 nano-scale materials with strong corrosiveness. Such packaging (valve port) bags are all imported, and the cost Higher; while ordinary industrial paper packaging (valve port) bags without anti-corrosion treatment can be corroded into paper scraps by corrosive media, lose their packaging capabilities and may cause economic losses. [0003] When the material in the packaging bag is a special nano-scale solid material - fumed silica, since the material just loaded into the packaging bag contains free chlorine and some hydrochloric acid gas, the pH value is between 3-4 at this time. The corrosion of kraft wrapping paper is very serious, an...

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Problems solved by technology

[0002] At present, there is no paper packaging (valve port) bag capable of packaging PH=3-4 and PH=9-10 nano-scale materials with strong corrosiveness. Such packaging (valve port) bags are all imported, and the cost Higher; while ordinary industrial paper packaging (valve) bags without anti-corrosion treatment can be corroded by corrosive media into paper scraps, losing their packaging capabilities and may cause economic losses

[0003] When the material in the packaging bag is a special nano-scale solid material - fumed silica, since the material just loaded into the packaging bag contains free chlorine and some hydrochloric acid gas, the pH value is between 3-4 at this time. The corrosion of kraft wrapping paper is very serious, and the kraft wrapping paper can be corroded into shredded paper, thus losing its packaging function; at the same time, the specific surface area of ​​fumed silica is very large, and its viscosity is high. It is an aerosol glue substance. And air-flow packaging is adopted, the packaging bag contains a large amount of gas, and the air pressure in the bag is relatively high, which requires that the gas can be discharged in time and quickly when the material is packaged (after a period of time (about a week), the pH value = about 7), Otherwise, because the air pressure in the bag is too high, the material cannot be packed into the packaging bag; while the existing composite layer packaging bags are mostly designed for moisture-proof, impact-resistant, and crack-resistant, after the ordinary kraft packaging paper is coated, its paper surface loses Therefore, the existing common industrial composite paper packaging (valve mouth) bag cannot be directly used for the packaging of fumed white carbon black nano-scale solid material at all.

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