How to store laminated plastic bags to extend their shelf life
Release time:
2025-06-18
Laminated plastic bags are widely used in food, cosmetics, pharmaceuticals, and industrial product packaging due to their excellent moisture-proof, oxidation-resistant, and puncture-resistant properties.
Laminated plastic bags are widely used in food, cosmetics, pharmaceuticals, and industrial product packaging due to their excellent moisture-proof, oxidation-resistant, and puncture-resistant properties. However, improper storage can degrade the performance of laminated plastic bags, leading to brittleness, deformation, sticking, and even loss of sealing, thus affecting their subsequent use. To extend their shelf life, the following aspects should be considered during storage.
1. Control the storage temperature
Laminated plastic bags are temperature-sensitive. Excessively high temperatures can cause the material to soften, deform, or even stick, while excessively low temperatures can cause them to become brittle. Ideally, the storage temperature should be between 5°C and 30°C. Avoid prolonged exposure to direct sunlight or heat sources.
2. Maintain an appropriate humidity level
Excessively humid environments can affect the stability of printed patterns and adhesive layers on laminated plastic bags and even cause mold. It is recommended to maintain a storage humidity level between 40% and 70%, with good ventilation to prevent prolonged moisture accumulation.
3. Avoid direct sunlight and ultraviolet radiation. Ultraviolet radiation accelerates the aging of plastic, causing it to lose its original toughness and transparency. Laminated plastic bags should be stored in a dark environment, preferably sealed in cartons or opaque packaging to prevent light exposure and material degradation.
4. Avoid Heavy Pressure and Folding
Prolonged heavy pressure can cause creases or permanent deformation in laminated plastic bags, affecting their sealing and aesthetics. They should be stored flat or upright on shelves, not stacked too high, and should be kept away from sharp or rough objects to prevent scratches or punctures.
5. Prevent Chemical Corrosion
Laminated plastic bags should be kept away from volatile chemicals such as paint, solvents, and strong acids and alkalis. These substances can penetrate the bag and damage its structural layer, causing it to lose its barrier properties.
6. Properly Control Storage Cycles
Although laminated plastic bags have a long shelf life, it is recommended that they be used within 12 months of production to ensure optimal performance. Prolonged storage may reduce the seal and strength due to natural aging of the material.
Proper temperature and humidity control, storage away from light, avoiding heavy pressure, keeping away from chemicals, and using within the appropriate cycle are all key measures to extend the service life of laminated plastic bags. Scientific storage management not only maintains their functionality but also reduces packaging loss costs for enterprises.
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