Non woven flour hardcover bags, with their unique performance advantages and environmental characteristics, have become an innovative choice for modern food packaging. Their core value is reflected in multiple key dimensions, meeting the functional needs of food storage and conforming to the trend of green development.
Material performance advantages
Breathable and moisture resistant
The unique fiber gap of non-woven fabric forms a precise microporous structure, which acts as an intelligent “breathing valve” and can effectively regulate the humidity inside the bag. When the external environment is humid, it can block excessive water vapor from entering; And when the flour in the bag may produce trace amounts of water vapor, it can be discharged to prevent the flour from getting damp and clumping. After actual testing, it has been found that using non-woven flour bags to load flour and allowing it to stand for three months, the flour can still maintain a loose state, and its preservation effect is significantly better than that of plastic sealed packaging. Plastic sealed packaging, due to its complete lack of breathability, is prone to the accumulation of water vapor inside the bag, which can cause flour to clump and deteriorate. In contrast, non-woven flour hardcover bags have a better ability to balance breathability and moisture resistance, meeting the storage needs of flour.
High strength and durability
In terms of material selection, when using 80-90g/㎡ weight polyester spunbond non-woven fabric to make flour finishing bags, it exhibits excellent load-bearing capacity, with tear resistance strength sufficient to easily carry 25kg of flour. Moreover, compared to traditional woven bags, the design of the handheld model reduces weight by 30%, greatly improving the convenience of transportation. At the same time, through the needle puncture process, the entanglement density between fibers is enhanced, which significantly improves the crack resistance of the bag in the right angle direction. Even in multiple handling and collision processes, it can effectively avoid breakage and ensure the safe transportation and storage of flour.
Environmental Protection Practice Performance
Recyclable
Non woven flour finishing bags have outstanding performance in terms of recycling. When a single bag is reused up to 11 times, it can cover the energy consumption cost during the production process. Its recycling time far exceeds that of disposable plastic bags, which are often discarded after one use, causing a lot of resource waste and environmental pollution. In addition, after simple cleaning and modification, old non-woven flour finishing bags can also be transformed into practical storage tools, such as for storing miscellaneous items, clothing, etc. Using such modified storage tools can increase ground cleaning efficiency by 40%, greatly extending the life cycle of the bag and achieving maximum resource utilization.
Degradation improvement plan
At present, mainstream PP non-woven fabrics take 200 years to complete degradation in natural environments, which to some extent puts pressure on the environment. However, with the continuous development of environmental protection technology, non-woven fabrics made of bio based materials such as corn fiber (PLA) have been decomposed by microorganisms in soil, making them more environmentally friendly. Although this type of bio based non-woven fabric has not yet been widely popularized due to its high cost, it undoubtedly points out the future direction for the environmental upgrade of non-woven flour finishing bags. With the advancement of technology and the reduction of costs, it is expected to become the mainstream of the market in the future.
Industrial adaptation design
Drawstring/Handheld Structure
For a 25kg non-woven flour hardcover bag, the design of the drawstring and hand-held structure increases the convenience of handling by 30%. The carrier can easily lift and move the bag, reducing physical exertion and inconvenience during the handling process.
Food grade ink printing
Using food grade ink for printing not only meets food safety standards, but also maintains a pattern retention rate of over 95% even after high-temperature cleaning. This means that after multiple uses and cleaning, the bag can still clearly display the brand logo and product information, serving as a brand promotion tool and helping to enhance the brand’s visibility and influence.
PE lining composite process
By adopting the PE lining composite process, the damage rate of non-woven flour hardcover bags has been reduced to 0.3%, successfully solving the pain point of leakage that is prone to occur in powder packaging. PE lining can effectively block flour particles and prevent them from leaking out from the fiber gaps of non-woven fabric, ensuring the sealing and integrity of the packaging.
Use optimization suggestions
Weight selection
In terms of weight selection, the preferred size for household non-woven flour bags is 80-85g/㎡. This weight range can balance breathability and load-bearing capacity well, meeting the daily needs of families. For commercial 25kg bags, it is necessary to choose a thicker version of 90g/㎡ to ensure that the bag has sufficient strength to withstand larger weights and ensure safety during transportation and storage.
Environmental protection and efficiency improvement
In order to further enhance environmental benefits, it is recommended to prioritize the use of non-woven flour bags made of recycled polyester materials. Recycled polyester material is the recycling and utilization of waste polyester materials, which can reduce the consumption of primary resources. At the same time, in conjunction with the “trade in” recycling mechanism, consumers are encouraged to return their used bags for reprocessing and reuse, thereby reducing the carbon footprint of the entire product lifecycle and promoting a green consumption cycle.
Storage Tips
In humid environments, it is recommended to choose non-woven flour hardcover bags with film covering. Film coating treatment can enhance the moisture resistance of the bag, prevent the strength of non-woven fibers from decreasing due to moisture absorption, ensure that the bag can still maintain good performance in humid environments, and effectively protect the flour from moisture and deterioration.
Dongguan Liansheng Non woven Technology Co., Ltd. was established in May 2020. It is a large-scale non-woven fabric production enterprise integrating research and development, production, and sales. It can produce various colors of PP spunbond non-woven fabrics with a width of less than 3.2 meters from 9 grams to 300 grams.
Post time: Aug-14-2025