Antibacterial BOPP film

The application of antibacterial materials has become more and more extensive. In particular, SARS rampant last year has promoted its rapid development. Molecular assembly antibacterial technology has also been applied to thin film products, and its influence is greater than the use of plastic parts such as electrical appliances. It is believed that this technology and products will benefit more consumers.

The outbreak of the SARS epidemic last year changed the people’s concept of life. The health and hygiene of living environment is getting more and more attention, and the pursuit of antibacterial and antibacterial products for daily use has become a consumption trend. At present, a new type of antibacterial technology in China - molecular assembly antibacterial technology has been applied to biaxially oriented polypropylene film.

The antibacterial BOPP film is a kind of polypropylene antibacterial masterbatch made by assembling the preferred antibacterial functional group on the basic resin polypropylene molecule of the BOPP film by using a molecular assembly technique; when the BOPP film is manufactured, the surface layer of the film or the contact food, The surface layer of drugs and beverages is prepared by adding the masterbatch to a certain amount of excipients and biaxially stretching the extruder so that the BOPP film is exposed to the surface of foods, beverages, and pharmaceuticals with antibacterial and bactericidal effects.

In addition to the properties of ordinary films, the antibacterial BOPP film also has the following remarkable features:

Efficient broad-spectrum antibacterial properties. Because the antibacterial masterbatch has good compatibility with the polypropylene resin, and the assembly rate of the antibacterial functional group is controlled through the process adjustment, the antibacterial functional group can be distributed in the nanometer size on the antibacterial film layer, making it highly efficient and antibacterial. The effect is extremely excellent in inhibiting various harmful bacteria and molds. Escherichia coli and Staphylococcus aureus, which are harmful to humans and foods, were selected for the test. Refer to FZ/T01021-92 "Test Methods for Antibacterial Properties of Fabrics" and "Dedication Technical Specifications of the People's Republic of China 1999 - Antibacterial Test". The Quinn test method and the anti-microbial material (product) membrane coating method developed by the Japan Food Analysis Center were tested by the Guangdong Microbial Testing Center. The antibacterial rates of the two strains were 99.92% and 99.99%, respectively.

Good antibacterial properties. Refer to the National Standards of the People's Republic of China GB2423.16-1999 and GB/T4857.21-1995 for the implementation of Aspergillus niger, Aflatoxin, Aspergillus versicolor, Chaetomium globifolia, Aureobasidium pullulans, and Wan Shichi Penicillium, green Trichoderma test, the result is to achieve a level 1 anti-mildew standards.

safe and non-toxic. Because the safety of antibacterial functional groups is preferred, they are chemical bonds that are immobilized on the molecular chains to make them unable to release; and the polypropylene materials used to make BOPP films are non-toxic materials, so the antibacterial BOPP films that are produced through molecular assembly are also safe. non-toxic. After the Shanghai Institute of Preventive Medicine according to the national standard GB15193-1944, GB/T17409-1988, respectively, acute oral toxicity test, skin irritation test, and micronucleus test, the conclusion is: a non-toxic grade, non-irritating substances, bone marrow The polynuclear red blood cell micronucleus test was negative.

Long-lasting antibacterial effect. Molecular assembly technology is to bind the antibacterial functional group to the basic resin molecule with a chemical bond, so theoretically, as long as the film exists, the molecule exists; when the molecule exists, the antibacterial function exists, and it will never be released and released. In other words, the antibacterial effect of the film will not be attenuated and will not be lost, and it can be washed, soaked, etc. multiple times.

For a long time, people have been looking for a kind of packaging material that can prevent or inhibit the penetration of external bacteria into foods and beverages, and at the same time can further inhibit the proliferation of bacteria that have not been completely killed in the processing of food and beverages, and even kill bacteria, and bacteria BOPP can make this ideal a reality. The heat seal layer of this material has antibacterial properties and can be used to package snow cakes, biscuits, moon cakes, breads, cakes, ice cream and other products, which can effectively extend the shelf life.

The antibacterial BOPP flat film has antibacterial effect on the surface layer. After compounding with other materials, the whole packaging material can have anti-bacterial effect and ensure that small foods are safer and healthier to eat. This flat film, matt film can also be used to cover books, children's books cover light, so that books, children's books are sterile, no mold, to avoid cross-infection.

Performance and cost are the key to determining whether a product can be accepted by the market. The antibacterial BOPP is achieved by adding antibacterial masterbatches. Since the two surface layers of the BOPP film are generally thin, the added amount will not be large, and the product cost will not increase too much. It is foreseeable that the antibacterial BOPP will have a broad market in the packaging field in China.