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At a time when packaging solutions for liquid products are becoming increasingly diverse, Flexible Liquid Packaging Bag is gradually becoming the mainstream choice for dairy products, juices, condiments, chemical liquids and even the pharmaceutical industry. Its unique structural design, excellent transportation efficiency and environmental performance make it stand out in the global packaging market and are subverting traditional bottled or canned packaging methods.
1. What is Flexible Liquid Packaging Bag? Know all about the structural analysis!
Flexible Liquid Packaging Bag, also known as liquid soft packaging bag, is a foldable liquid-carrying container made of multi-layer composite film, usually equipped with a valve, zipper or nozzle structure. It integrates multiple advantages such as flexibility, sealing and lightweight, and can effectively protect the liquid contents from contamination or leakage.
Common structural layers include:
Outer layer (PET/NY): Provides mechanical strength, tear resistance and printing functions;
Middle barrier layer (AL/NY/MPET): Effectively blocks oxygen, water vapor, and light to prevent the contents from deteriorating;
Inner layer (PE/EVOH-PE): Direct contact with liquid to ensure food grade safety, while having good heat sealing performance;
Optional accessories: For example, self-supporting bottom bag, suction nozzle, handle, deflation valve, etc., to meet multiple scenarios.
2. Applicable scenarios are beyond imagination, covering all food and daily chemicals
Flexible Liquid Packaging Bag has a wide range of applications, covering the full range of products from food to industrial liquids.
1. Food and beverage industry
Juice, dairy products, concentrated beverages, condiments (soy sauce, vinegar), alcohol, etc.
Easy to carry, easy to open, and leak-proof, very popular with consumers
2. Daily chemical cleaning industry
Laundry detergent, dishwashing liquid, hand soap, disinfectant, etc.
Can be combined with replacement and refill packs to save plastic use
3. Medical and chemical industry
Medical flushing fluid, reagent packaging, agricultural fertilizer, lubricating oil, etc.
High barrier design can extend the shelf life and ensure transportation safety
Especially in the context of the rise of cross-border e-commerce and the extension of the delivery radius, the lightweight characteristics of flexible packaging make it a "hidden champion" in improving logistics efficiency.
3. Flexible packaging materials: a combination of technology and environmental protection
The material selection of Flexible Liquid Packaging Bag is directly related to the sealing, safety and environmental performance of the product.
Mainstream material ratio:
PET/AL/NY/PE: commonly used for liquids requiring high barrier properties such as condiments or medicines
PET/MPET/PE: suitable for products such as beverages and detergents that do not require high light
EVOH/PE: high oxygen permeability barrier, suitable for easily oxidized substances such as dairy products and juices
Material advantages:
Excellent heat sealing performance to ensure no leakage during high-temperature filling
Excellent toughness and puncture resistance to avoid damage during transportation
Most materials can be recycled, in line with the trend of green packaging
With the development of degradable film technology, Flexible Liquid Packaging Bag will achieve more environmental breakthroughs in the future, such as PLA biofilm and recyclable PE single material structure.
4. Six core advantages of Flexible Liquid Packaging Bag
Reduced packaging costs: 30%-70% lower than traditional hard bottle packaging costs;
High transportation efficiency: empty bags can be folded, and transportation and storage space is reduced by 80%;
Extended shelf life: high barrier layer prevents light and oxygen intrusion;
Easy to use and pour: with valve, nozzle, and easy-tear design;
Improve brand image: high-quality printing can be achieved to enhance visual appeal;
Environmentally friendly and low-carbon: light weight, reduced plastic use, and lower carbon footprint.
From environmental performance to cost control, from structural design to market trends, Flexible Liquid Packaging Bag is not just a packaging container, but also a key link in the brand's move towards sustainability and intelligence.
Whether you are a food and beverage brand, a daily chemical company, or a startup exploring new packaging forms, it is worth seriously considering this professional and futuristic packaging solution.
