Peach protection bag quality inspection guide: the key to ensuring safe transportation and storage of fruits

1. The importance of material selection
The material of the protection bag directly affects its protection function. Common peach protection bag materials include non-woven fabrics, foam nets, polyethylene (PE), etc. Different materials have different advantages and disadvantages. Therefore, when choosing a protection bag, you first need to check whether the material of the bag is suitable for the characteristics of peaches.

Non-woven fabric material
Non-woven bags are the most common type of peach protection bag, with good air permeability and softness. It can effectively reduce friction and avoid indentations on the surface of peaches due to collisions. At the same time, it is not easy to produce moisture, which helps to extend the shelf life of peaches. When checking the quality of non-woven bags, it is necessary to confirm whether the thickness of the material is moderate, whether it is tough enough and not easy to break. It is also necessary to ensure that the density and quality of the non-woven fabric are uniform to avoid insufficient protection effect in some parts of the bag due to too thin material.

Foam net material
Foam net bags have good cushioning effect, can effectively resist external pressure and impact, and protect peaches from damage. Foam nets are usually softer and have a certain degree of elasticity, which can absorb a certain impact during packaging and transportation. However, when checking the quality of the foam mesh bag, make sure that the mesh size is uniform to avoid inadequate protection or air permeability due to too large or too small mesh. The thickness of the foam mesh should also be moderate, which can effectively protect the peaches without being too bulky.

Polyethylene (PE) material
Polyethylene (PE) bags are usually smooth and have a certain degree of waterproofness, which is suitable for storage and transportation in a relatively dry environment. However, its air permeability is poor and it is not suitable for long-term storage of fruits. High-quality PE protective bags should have good compression resistance and tear resistance. When checking, pay special attention to whether there are defects or cracks on the surface of the bag. These defects may cause the bag to break during use and fail to effectively protect the peaches.

2. Check the thickness and toughness of the bag
When choosing a peach protective bag, it is very important to check the thickness and toughness of the bag. A protective bag that is too thin may not be able to effectively resist external collisions and friction, while a bag that is too thick may increase the burden on the peaches, causing them to be oppressed during transportation, which in turn affects the quality of the fruit.

Appropriate thickness
The thickness of the bag should be selected according to the type of peach, storage method and transportation environment. For delicate small peaches, choosing a slightly thicker protective bag can provide better cushioning, while for storable peaches, you can choose a thinner bag, but still ensure that it has a certain degree of pressure resistance.

Toughness of the bag
Toughness is another important indicator of the quality of the protective bag. A bag with high toughness will not break easily when subjected to a certain pressure, thus avoiding damage to the peaches. When checking the toughness of the bag, you can perform a slight stretching or tearing test to observe whether the bag is easy to deform or break. If the bag is easy to tear or deform, it means that its quality is poor and cannot provide sufficient protection.

3. Check the sealing and sealing of the bag
The sealing design of the peach protective bag also determines its quality to a certain extent. If the sealing part is not handled properly, it may cause the bag to fail to effectively wrap the peaches, thus failing to fully play its protective role. A high-quality protective bag should have a stable sealing design to avoid loosening or damage during transportation.

Sealing method
Common ways to seal the protective bag include heat sealing, adhesive sealing, and sewing sealing. Among them, heat seal is commonly used in PE bags and non-woven bags, which have good sealing and firmness. When checking, you can gently pull the sealing part to confirm its firmness; if the sealing part is easy to loosen or tear, it means that the sealing design is unqualified, which may cause the bag to open during transportation and fail to play a protective role.

Sealing
For some special protective bags (such as bags with lining), it is necessary to check the sealing of the bag to ensure that the bag can effectively isolate external moisture and pollutants to prevent the fruit from rotting or deteriorating during storage. High-quality protective bags should have certain waterproof and moisture-proof functions, which can effectively protect peaches from the influence of the external environment.

4. Breathability and vent design
Although the main function of peach protective bags is to prevent external impact, good breathability is equally important. If the protective bag is completely airtight, moisture in the bag is easy to accumulate, causing peaches to rot. Especially during long-term transportation or storage, proper ventilation design can reduce moisture accumulation and help fruits stay fresh.

Air hole design
High-quality peach protection bags usually have a certain number of small holes or meshes designed to keep air flowing. Check whether these holes are evenly distributed and whether the hole size is moderate. Too large air holes may reduce the protective effect of the bag, while too small holes may lead to poor ventilation, thus affecting the preservation of the fruit.

Balance of air permeability
A balance needs to be maintained between air permeability and protection. Bags that are overly permeable may cause peaches to lose moisture and affect the taste; bags with poor air permeability may accelerate decay. Therefore, it is particularly important to choose a protective bag with moderate air permeability.

5. Environmental protection and safety
With the increase in environmental awareness, more and more consumers tend to choose protective bags made of environmentally friendly materials. Therefore, when checking the quality of protective bags, you should also pay attention to their environmental protection.

Environmentally friendly materials
Environmentally friendly non-woven fabrics, degradable polymers and other materials are increasingly used in the production of peach protection bags. When checking, you should confirm whether the bag is marked with relevant certifications for environmentally friendly materials to ensure that it will not pollute the environment.

Safety
Ensure that the selected protective bag does not contain harmful substances, such as heavy metals or toxic chemicals. Especially when used for food packaging, the safety of the material is more important. High-quality protective bags should pass relevant safety tests and meet national standards.