The hottest food packaging favors plastic

2022-10-14
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Food packaging favors plastics

polyester

at present, 77% of the global bottle polyester resin is used for food packaging, and non food packaging only accounts for 23%. Carbonated beverage bottles are mainly used in food packaging, accounting for about 50% of the total. Other beverage packaging accounted for 21%, edible oil and salad packaging accounted for about 6%. In the past five years, the annual growth rate of polyester bottles has reached 18%. With the improvement of people's living standards, the requirements for packaging materials are also increasing, and polyester packaging containers just meet this requirement. Especially in beverage packaging, polyester bottles gradually replace PVC bottles, tin cans and aluminum cans with their excellent performance

PVC

in recent years, with the improvement of people's living standards, various convenient, health-care and flavor foods will become the development direction of the food industry. In order to adapt to the development of the market, we should produce more high barrier single films and composite films to meet the requirements of all kinds of cooked food packaging and sterile food packaging. The mildew proof of grain and the pointer of the load instigation mechanism run for one week and encounter the head limit switch. Insect proof packaging, cake fresh-keeping packaging, vegetable and fruit fresh-keeping, long-term frozen food packaging, and microwave oven food packaging are all huge markets for PVC packaging materials

hiroji Watanabe, the world's oldest qualified expert in the development of plastic food containers and President of Japan's central chemical company, said that after 10 years of efforts, they have successfully developed a special plastic CT for food packaging containers that conforms to the principles of environmental protection. Containers made of CT plastic have little difference from other food packaging containers on the surface, but their internal quality has changed greatly. According to experts, in addition to paying attention to the production efficiency and energy requirements, this kind of plastic is a new composite material made by blending polypropylene plastic with about half of the talc powder produced in Liaoning, China. CT is not only resistant to high temperature, but also has the most prominent advantage, that is, its function is similar to that of PSP plastic products commonly known as "foam plastic", and its volume is only equivalent to 1/4 of the latter. In this way, the trouble caused by large volume is avoided during recycling, and extremely favorable conditions are created for eliminating the negative impact on the environment. Watanabe believes that CT will be a more suitable plastic packaging container from the perspective of Chinese food culture, which is rich in oil, hot food and heavy color. In view of the serious "white pollution" in China, CT is expected to alleviate this situation to a certain extent

sterilization and water absorption food bags

the Russian Institute of practical biotechnology recently developed food packaging bags that can absorb water, sterilize and be used for many times, so that foods that are easy to deteriorate such as cheese sausage can be preserved for a long time. Russian experts added dehydrated mineral salts, enzymes and other substances to food packaging polymers. The inner surface of the packaging bag rich in these substances can absorb excess water and kill bacteria, thus improving the internal environment of the packaging bag. The enzymes in the additives can also regulate the smell of food and create a bottom-up space for the nutrients in food. In order to make the new packaging bag can be reused, researchers also studied to make the packaging bag can be reused for 9 times in a specific process, thereby reducing the consumption of packaging and reducing the production cost

straw container

disposable straw catering container is a completely degradable green environmental protection product made by using pure natural plant fibers such as waste crop straw and adding a safe and non-toxic molding agent that meets the health standards of food packaging materials through a unique process and molding method. The product is resistant to oil, heat, acid and alkali, and freezing. Its strength is better than that of foam plastic and paper tableware, and its price is far lower than that of paper tableware. The project not only eliminates white pollution, but also provides an effective way for the comprehensive utilization of straw

bacteria detection film

a newly developed special film that can detect bacteria, that is, to promote the quality and efficiency improvement of traditional industries such as rubber products, chlor alkali chemical industry, chemical fertilizer, etc. a special coating is coated on the surface of ordinary food packaging film, so that it has the special function of detecting bacteria, such as bacteria detection film used in raw and cooked meat packaging. If the packaged meat food is no longer fresh, and the content of harmful bacteria exceeds the food hygiene standard, Packaging with this kind of film will change the original transparent and colorless packaging film into a warning color, so that customers immediately know that it is no longer edible

corn plastic

not long ago, American researchers developed a corn plastic packaging material that is easy to decompose. It is made of corn starch mixed with polyethylene. This kind of plastic is suitable for making integrated food packaging bags. The package can be quickly dissolved in water, which can avoid the contact and invasion of pollution sources and bacterial toxins

rape plastic

a kind of rape plastic packaging material has recently been successfully developed by the UK. It extracts three genes that can produce plastics from bacteria that produce biopolymers, and then transfers them to rape plants. After a period of time, a plastic polymer liquid is produced, and a rape plastic can be obtained after refining and processing. The packaging material or food made of this kind of plastic can decompose itself after being discarded, without polluting residues, regardless of the release or reduction of production capacity

wheat plastic

this is to use wheat flour to add glycerol, glycol, polysilicon oil, etc. to mix and dry, and then add 150 kg of pressure per square meter to form a translucent plastic film. The advantage of packaging food with wheat plastic is that it can be decomposed by microorganisms

wood flour plastic

recently, Japanese scientists and technicians have developed a wood flour plastic packaging material from pine wood. Polyols are prepared from wood flour, and then react with isocyanates to produce polyurethane. This kind of wood flour plastic has strong heat resistance and can be biodegradable, and can be used to make temperature resistant packaging bags, etc

bacterial plastic

British researchers have recently developed a PHB bacterial plastic. It first uses sugar to cultivate a bacterium, and then processes it into a material similar to polypropylene. This material is non-toxic and easy to biodegrade. It is an ideal material for processing food packaging bags. At the same time, it has no pollution to the environment after being discarded

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