Новые пластиковые материалы для упаковки принесут пользу человечеству

To purify the living environment

and improve the quality of life

Plastic packaging waste, which pollutes the environment ever more seriously, has become a focus of public remediation. In recent years, a number of easily degradable

new plastic packaging

materials have come onto the market one after another

and are increasingly becoming a market favorite.

Sterilizing and water-absorbing food bags. The Russian Research Institute of Applied Biotechnology has recently developed water-absorbing, sterilizing, reusable

, enabling perishable foods such as cheese and sausages to be preserved for a longer time. Russian experts added dehydrated mineral salts, enzymes and other substances to the food packaging polymer. The inner surface of packaging bags rich in these substances can absorb excess moisture and kill bacteria, thereby improving the internal environment of the bag.

The enzymes among the additives can also regulate the smell of food and create space for the nutrients in the food to rise. To make the new packaging bags reusable, researchers also studied how the bags can be used nine times in a specific process, thus reducing packaging consumption and lowering production costs.

Corn plastic packaging enters the home. American scientists have developed a plastic packaging made by blending corn starch into polyethylene

This product gives people a back-to-nature feeling. It is suitable for making integrated food packaging

it dissolves quickly in water

making washing and cooking convenient

and avoiding the attack of pollution sources and bacterial toxins

so it is widely used.

Rapeseed plastic packaging attracts attention. This is what British scientists obtained from bacteria that produce biopolymers

extracted three genes capable of producing plastic

then transferred them into rapeseed plants

after a period of time a plastic polymer liquid is produced

after further refining and processing

a rapeseed plastic can be obtained. Packaging materials or baby diapers made from this plastic

decompose on their own after use

and are extremely popular with consumers.

Bacterial plastic packaging is gradually becoming a new favorite. A bacterial plastic developed by British scientists

is cultivated from sugar

and processed into a material similar to polypropylene

that is easily biodegradable

making it an ideal material for surgical sutures and food packaging bags

and its market prospects are increasingly bright.

Wood-flour plastic packaging shows its charm. Japanese scientists, from pine wood flour,

extracted polyols

and then reacted them with isocyanate

to form polyurethane. This wood-flour plastic has extremely strong heat resistance

and is biodegradable

so it can be used to make heat-resistant packaging bags and the like

with broad and large market demand.

HutamaKi

has successfully developed a new type of plastic packaging with both passive and active barrier functions, effectively inhibiting

the ingress of oxygen; its effect does not weaken even after the food bag packaging is retorted.

The new plastic packaging can not only extend the storage life of products but can also be heated directly in a microwave, making it particularly suitable for convenience food packaging. It solves the problem that ordinary plastic film packaging easily allows oxygen permeation, causing products to lose flavor and change color after being stored for a period of time. The packaging material is composed of

layers of different materials laminated together, with the first and last layers made of polypropylene, the second and fourth layers of adhesive, and between them an oxygen-barrier polymer material

ethylene-vinyl alcohol copolymer

, which is called the passive barrier; it can not only block incoming oxygen molecules but also absorb the oxygen inside the package. The oxygen scavenger remains active even in the presence of moisture, thus extending the shelf life of the product.

——This article is reprinted from China Packaging Network (pack.cn), original link: http://news.pack.cn/show-369960.html