Biodegradable packaging bags
Biodegradable packaging bags are environmentally friendly packaging bags that are made of environmentally friendly materials so that the packaging bags can naturally blend into the soil without causing environmental damage. What are biodegradable bags?
Biodegradable bags refer to bags that are added with a certain amount of additives (such as starch, modified starch or other cellulose, photosensitizers, biodegradants, etc.) during the production process to reduce their stability and make them easier to degrade in the natural environment.
Biodegradable bag are generally divided into four major categories:
1. Photodegradable bag
Photosensitizers are incorporated into plastics to gradually decompose them under sunlight.
It belongs to an earlier generation of degradable plastics. Its disadvantage is that the degradation time is difficult to predict due to sunlight and climate changes, so the degradation time cannot be controlled.
2. Biodegradable bag
Plastics that can be completely decomposed into low molecular compounds under the action of microorganisms. Its characteristics are that it is easy to store and transport. As long as it is kept dry, it does not need to be protected from light. It has a wide range of applications. It can not only be used in agricultural mulch films and packaging bags, but also widely used in the medical field.
With the development of modern biotechnology, biodegradable plastics have received more and more attention and have become a new generation hot spot in research and development.
3. Light and biodegradable bag
A type of plastic that combines photodegradation and microbial degradation. It has the characteristics of both photodegradable and microbial degradable plastics.
4. Water-degradable bag
Adding water-absorbent substances to plastics can dissolve them when discarded in water after use. They are mainly used in medical and sanitary appliances (such as medical gloves) to facilitate destruction and disinfection.
As a packaging bag manufacturer specializing in customizing various biodegradable bags. It has a history of more than ten years, including eight-side sealing kraft paper degradation bags, cellophane degradation bags, self-standing degradation bags, degradation zipper bags, degradation air valve bags, Compostable biodegradable bags. All can be customized for you, please call us for consultation!
Advantages of kraft paper packaging bags
Kraft paper packaging bags is a new type of packaging bag with high strength, anti-aging, high temperature resistance, moisture-proof, breathable, non-toxic and harmless. It is widely used in commodity bags in packaged food, fresh frozen food, starch, casein, feed, building materials, chemicals, mineral products and other industries.
Kraft paper packaging bag has the following six advantages
1. Moisture-proof
Due to the excellent fluidity and film-forming properties of PVA, a layer of film will be formed on the inner layer of the paper-plastic packaging bag during the pressure lamination process, which plays the role of lamination bonding and moisture-proofing. There are many invisible holes on other surfaces, which can effectively prevent water molecules from outside the paper-plastic packaging bag from entering the bag.
2. High temperature resistance
The strength of paper-plastic packaging bags is mainly controlled by warp and weft yarns. Because vinylon water-soluble yarn has the characteristics of constant breaking force of single yarn at 180 degrees. The ignition point of paper is 183 degrees, so the composite bag is also resistant to high temperatures.
3. Anti-aging
Since paper is a plant substance that is not easy to age and is opaque, the paper inside and outside the paper-plastic packaging bag can effectively protect the paper from aging under ultraviolet irradiation, making the packaging bag also have anti-aging characteristics.
4. High intensity
The strength of paper-plastic packaging bags is mainly controlled by the longitude and latitude directions. As the weft disk rotates counterclockwise, many triangular mesh structures will be formed on the outer surface of the inner paper, which greatly increases the internal stress of the packaging bag and makes the packaging bag have high strength.
5. Stack non-slip bags
Because during the pressure compounding process, many triangular mesh structures are formed on the outer surface of the paper-plastic packaging bag, which increases the friction coefficient of the outer surface of the bag, so that the bag will not slip during the stacking process (the height can reach 40 degrees) .
6. Protect the environment
Since vinylon water-soluble yarn is not treated with resin acetal, it can be dissolved in 80% hot water to form glue. After soaking, the inner and outer layers of the paper can be recycled to make recycled paper without polluting the environment.
Paper-plastic packaging bags, also known as three-in-one composite paper bags, are small bulk containers that are mainly transported by manpower or forklifts. Easily transport small quantities of bulk powder and granular materials. It has the characteristics of high strength, good waterproofness, high appearance, and convenient loading and unloading. It is a popular and practical commonly used packaging material.
Paper-plastic packaging bags are mainly used for packaging powdery or granular fixed materials and flexible items such as building materials, mortar bags, putty powder, food, chemical raw materials, etc. In recent years, they have also been widely used in express packaging in areas such as online sales, three-dimensional wall stickers, car seat cushions, and seat covers.
How to detect biodegradable and compostable, degradable packaging bags?
With the emergence of degradable materials for plastic bags, there are now many degradable plastic bag brands on the market, which come from different degradable plastic bag manufacturers. For buyers who want to buy these plastic bags, they don’t know how to choose. Today, the editor of Tuowei Packaging will tell you what degradable materials are and teach buyers how to identify good degradable plastic bag manufacturers.
1. Composition of degradable materials
The degradable material is a relatively new type of polylactic acid. This material is a new biomatrix and renewable biodegradable material. The main reason is that the starch raw material is saccharified to obtain glucose, which is then fermented with certain strains of bacteria to produce high-purity lactic acid, and then polylactic acid of a certain molecular weight is synthesized through chemical synthesis. It can be seen from here that no chemical components have been added during the evolution process, and they are all biological substrates, laying the foundation for its biodegradation. Aliphatics are then added to bring the two materials together to improve the toughness, biodegradability and molding processability of PLA.
2. Key points for identification of biodegradable plastic bag manufacturers
The key to identifying a good biodegradable plastic bag manufacturer is whether it has passed national certification and accreditation. Because the country has standards for judging each manufacturer. Therefore, the quality of products produced by manufacturers that have not passed certification is often worrying. Especially degradable plastic bags, which look not much different from traditional plastic bags from the outside. Therefore, some "black-hearted" businessmen are likely to misrepresent the real ones. After all, the traditional plastic bag production process is relatively simple. However, if it is approved by the state, we can use it with confidence and fully support environmental protection!
Biodegradable packaging bags: biodegradable and compostable, degradable pouch, bag, film and roll for tea and coffee, etc.
