subject: Nano Material Applications In The Packaging Industry Analysis - Nano, Packaging Industry - Printing [print this page] Antimicrobial material is mainly used in antibacterial plastics packaging industry, the use of the form of films, hollow boxes and other containers, and turnover. Organic antibacterial agents because of security issues, to applications in the packaging industry has been limited, and the natural antibacterial agent using a high security much attention.
Nano Materials Package Industry ( HC printing network With map)
Print Network HC Antibacterial materials used in packaging industry mainly antibacterial Plastic Its use in the form of films, hollow boxes and other containers, and turnover. Organic antibacterial agents because of security issues, to applications in the packaging industry has been limited, and the natural antibacterial agent using a high security much attention.
1. Antimicrobial agent used in plastic products can be the following three ways:
the antibacterial agent directly with plastic mixed, dispersed in plastics made of antibacterial plastics;
the antimicrobial masterbatch and plastic mixing process;
molding technology in the products will be antimicrobial agent embedded in plastic surfaces.
Antibacterial agent added directly process is simple, but the antimicrobial agent dispersed in the plastic poor antimicrobial particles easily join, less effective anti-bacterial, anti-bacterial agent used is not sufficient, the use costs. Antimicrobial masterbatch law's core technology is the development of antimicrobial masterbatch. Antibacterial antibacterial agent is dispersed in the masterbatch carrier resin body of highly enriched, containing antibacterial doses of 10% to 40%. Antibacterial plastic masterbatch, together with the processing, or blending with plastic again with scattered beneficial antimicrobial and antibacterial effect of the dispersion of play, is now generally accepted and widely used technical approach, rational antimicrobial masterbatch Design And use, can greatly save the cost of antimicrobial use. Forming stage in the processing of antibacterial products, plastic products, the main purpose is to conserve the amount of antimicrobial agent, the rational use of antimicrobial agents, to control costs. Now understand the specific implementation of the program, there are two: one is made of ultra-fine particles of antimicrobial agent spray liquid, spray the surface of the plastic mold, plastic injection molding in the antimicrobial agent into the plastic on the surface; another species is the antimicrobial agent with the plastic film, then film attached to the mold surface, the plastic molding the combination of antibacterial plastic film to the workpiece surface. Use of this antibacterial molding technology can greatly save the amount of antimicrobial agent, use of antimicrobial molding technology too, can be significant savings in the amount of antibacterial agent, but application is not widespread, mainly due to higher investment in equipment.
2. Antimicrobial plastic is added to the inorganic antimicrobial resin to rely on inorganic antimicrobial agent in the resin migration, in the resin surface with antibacterial ability of the surface, by contact with a packaged sterilized. As the inorganic antibacterial agent and more of the powder, particle size less general needs in the processing of these particles evenly dispersed in the resin in order to get good anti-bacterial effect. Therefore, the general first antimicrobial home made anti-bacterial material, then the proportion of resin blend requirements, also need to consider the antibacterial agent and resin compatibility, so it is necessary antimicrobial pretreatment, adding coupling agent, dispersant.
Experiments show that the antimicrobial agent by silver and ldpe resin blend blown film, the film was a basic performance test, the results show that after adding silver antimicrobial agent, the film has good antibacterial activity, but tensile strength, breaking elongation and oxygen permeability rate decreased slightly. However, production standards and full compliance Packaging film Performance requirements.
3. The current system to take anti-bacterial materials are mainly inorganic nano material using the method, that is, plastic raw materials in the nano anti-bacterial material. The new type of inorganic nano material contact with the antibacterial principle of dissolution is different from the traditional organic nano material and photocatalyst inorganic nano material. The sterilization mechanism of positive charge when exposed to the antimicrobial component with the negative charge of microbial cells, each adsorption, the effective puncture the cell membrane, the cell protein denaturation, not breathing, metabolism and reproduction, until death, completion of sterilization . At this point, consumption of antibacterial ingredients did not do anything, still maintain their antibacterial capacity, so its long-term effective antimicrobial capability.
