—20 years of agricultural products mesh bags packaging practitioners to share their experience
As a practitioner in the agricultural packaging industry for 20 years, I always believe that quality mesh bags are not only a loading tool, but also an important guarantee to protect the quality of agricultural products and improve the efficiency of circulation. Take onion as an example, its special physiological characteristics put forward strict requirements for packaging. This article will be from the material, structure, process and other perspectives, for you to analyze how to select more suitable for onion mesh bags.
First, the choice of materials: toughness and breathability as the core
Onion skin is thin and easy to break, friction or extrusion during transportation can easily lead to mechanical damage, triggering decay. Therefore, the mesh bag material must take into account the flexibility and stretch resistance.
High Density Polyethylene (HDPE): High strength, puncture resistance, suitable for long-distance transportation or stacked storage, can effectively reduce breakage.
Linear low density polyethylene (LLDPE): better flexibility, can adapt to the irregular shape of the onion, reduce the local pressure concentration, reduce the risk of skin abrasion.
Suggestion: Prefer HDPE and LLDPE blended materials, taking into account the rigidity and elasticity, while the cost can be controlled.
Second, mesh design: balance between protection and ventilation
Onion will breathe and dissipate heat during the storage process, and the humid environment is prone to mold growth. The size and density of the mesh directly affects the ventilation and protection effect.
Mesh size: It is recommended to choose 6-8mm diamond-shaped mesh, which can prevent the onion skin from direct contact with the mesh to produce friction, but also to ensure air circulation.
Mesh density: 18-22 mesh per square inch, to avoid too dense leading to high humidity inside the bag, or too sparse to reduce the support.
Measured experience: under the same conditions, a reasonable mesh design mesh bag can reduce onion loss rate of 3-5%.
Third, size and weight: matching the characteristics of onions
Single bag capacity: adjusted according to the size of the onion, the conventional 10-15 kg is the most suitable for mechanized sorting and handling, too heavy easily lead to the bottom of the onion pressure deformation.
Bag length and opening: bag length is recommended to be 50-60cm, 5-8cm flap is reserved at the opening, which is convenient for tying the mouth and avoiding bag breakage.
Load-bearing test: high-quality mesh bags should be able to withstand 30 kg of static pressure without breakage, dynamic drop test (1.5 meters high) without cracking.
Fourth, environmental protection and economy: long-term value considerations
Biodegradable materials: With the environmental protection requirements, adding starch-based degradation masterbatch mesh bags can not only meet the performance requirements, but also can be gradually decomposed in the natural environment to reduce pollution.
Recycling: Some customers choose reusable thickened mesh bags, which can be cleaned and sterilized to prolong their life and reduce overall costs.
Industry Trend: The EU market has mandated the use of biodegradable materials for packaging of agricultural products, domestic enterprises need to layout in advance.
Fifth, brand customization: enhance the added value of the product
In addition to the basic functions, mesh bags can also be customized to enhance brand recognition:
Printing process: the use of gravure printing technology, mesh bags clearly printed on the surface of the brand LOGO, product information or traceability two-dimensional code.
Color selection: White mesh bags can highlight the color of onion, while green or yellow can convey the visual impression of natural health.
Handle design: add reinforced handles to make it easy for end consumers to pick up and enhance the experience of using the product.
Suggestions for use: details determine success or failure.
- Pre-cooling treatment: pre-cool the onions before bagging to reduce temperature fluctuations inside the bag and minimize condensation.
- Tying method: Use self-locking ties or knots to ensure that the bag is tight but not strangling the onions.
- Storage environment: Avoid direct sunlight, keep the ventilation gap when stacking, and control the humidity below 60%.
I’m the mesh bag factory manager in China friends, choose the right mesh bags, more help you do business, quality assurance, the price to the most affordable, to protect the product performance, cost-effectiveness and sustainability to find the optimal solution between . 20 years, we continue to optimize the material formulations, improve the weaving process, has been more than 300 agricultural products for the country’s enterprises to provide mesh bags, professional packaging solutions. In the future, we will continue to “let every onion get professional protection” for the mission, to help the industry high-quality development.
