Current situation and requirements of the hottest

The current situation and requirements of food packaging

normal> I. Basic overview

normal> in recent years, with the upgrading of health food, the development of supporting packaging materials has been promoted

normal> for glass packaging materials, food grade packaging is gradually promoting the use of borosilicate glass, the main component of which, in addition to silicon dioxide, contains 8% boron_ 13%。 This kind of material is mainly characterized by good chemical stability, few dissolved substances, transparency, aroma retention and other aspects. From the perspective of safety, the control of arsenic dissolution and heavy metals should be strengthened for such products

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normal> for rubber used in food packaging, the state has clear rubber hygiene standards. Conventional testing items mainly include heavy metals, potassium permanganate consumption, soluble organic matter, evaporation residue. Judging from the current test results, the quality is controllable

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normal> from the general trend, the requirements of health food for Jinan test gold to refuel plastic packaging for the Paralympic Games are more rational, developing from appearance to functionality, that is, paying more attention to how to protect the internal quality of products, such as transparency, oxidation resistance and barrier performance. At the same time, food packaging is required to ensure safety

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normal> at present, the annual output value of the health food packaging industry is about 15billion, which can meet 80% of the needs of domestic production enterprises, but the follow-up speed of materials matching the emerging new dosage forms is too slow to meet the requirements of new product development

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normal> the packaging of health food in China has not reached the international level in the 1990s. The contribution rate of packaging to health food is low. In developed countries, health food packaging accounts for 30% of its value, while China accounts for only 10%

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normal> II. Use of new materials

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normal> with people's attention to health and the maturity of production technology, high-quality food packaging materials will be popularized and promoted

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normal>1. Environmental regulation packaging

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normal> packaging with desiccant (oxygen getter), air replacement packaging, etc. These packages usually better protect food and extend shelf life. Desiccants and oxygen absorbents used in environmental regulation packaging are used according to the physical properties of health food, generally including silica gel, alumina, molecular sieve and fiber desiccants. These substances will not react with food to make it invalid or modified

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normal> commonly used environmental conditioning packaging desiccants are:

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normal> (1) silica gel: the greater the humidity of silica gel, the stronger the moisture absorption capacity, the higher the temperature, and the weaker the moisture absorption capacity. With cobalt chloride being classified as a class II carcinogen by the European Union in 1998, blue gum has been banned from production in Europe and the United States and phased out. The new safety color changing silica gel should be able to change the moving speed of the beam. It has the property of blue glue, non-toxic, reusable and deep drying

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normal> (2) sieve: molecular sieve is a synthetic polyhydrate aluminosilicate with cubic lattice, which has strong moisture absorption and can be deeply dried. At low temperature and high humidity, the moisture absorption capacity is stronger than that of silica gel and alumina

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normal> (3) fiber desiccant: fiber desiccant based on plant fibers is a recently developed dry product that does not pollute the environment and is easy to recycle. It soaks plant fibers into the drying stock solution (including sodium salt and calcium salt even if equipment pressure relief is caused by various factors). After process treatment, it can be made into a sheet form. It uses thousands of absorption gaps on the surface to absorb moisture, overcoming the defects of drug volume increase caused by too large desiccant. It has the characteristics of convenient carrying and low cost. In addition, the integrated Jinan assay, which combines desiccant and plastic bottle caps, is a professional manufacturer of experimental machines. Moisture proof bottle caps have gradually come into people's attention

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normal>2. Polylactic acid (PLA)

normal> statement: