Non-woven bags, also known as non-woven shopping bags, are a type of eco-friendly packaging bag. Below is a detailed introduction to non-woven bags:

Material Properties

Non-woven bags use non-woven fabric as a raw material. Non-woven fabric is a non-woven textile formed directly from polymer chips, short fibers, or long filaments through various fiber web forming methods and consolidation techniques. It is a new type of fiber product with characteristics of softness, breathability, and a flat structure. Non-woven fabrics have the following properties:

Durable: Non-woven fibers are tightly bound together and are not easily torn.

Good breathability: The fiber structure allows gases to pass through easily.

Moisture-proof: Effectively prevents water penetration.

Lightweight: Low density, easy to carry.

Non-flammable: Not easily combustible, high safety.

Biodegradable: Degrades naturally outdoors in 90 days, excellent environmental performance.

Non-toxic and non-irritating: Harmless to the skin, safe to use.

Rich in color: Can be dyed in various colors as needed.

Inexpensive: Relatively low production cost, affordable price.

Production Process

The production process of non-woven bags mainly includes the following methods:

Hydroentanglement: Using high-pressure micro-fine water jets to spray the fiber web, causing the fibers to intertwine.

Thermal bonding: Heating the fiber web to fuse it together.

Air-through bonding: Using airflow to open and consolidate the fibers into a web.

Wet-laid method: Opening fibers into single fibers in an aqueous medium, then making a fiber slurry, then forming a web and consolidating it.

Spun-bond method: Extruding and stretching the polymer into continuous filaments, then laying them into a web and consolidating it.

Melt-blown method: Melting and extruding the polymer into fibers, then cooling into a web and consolidating it.

Needlepunching: Consolidating a fluffy fiber web using needles.

Sewing method: Consolidating the fiber web using a warp-knitted structure.

Application Classification

Because non-woven bags are environmentally friendly and durable, they are widely used in various fields, mainly including:

Advertising: Used for corporate promotion and product marketing.

Education: Disseminating knowledge and cultural information.

Gifts: Given as gifts, with commemorative significance.

Commemoration: Used for celebrations and anniversaries.

Simple: Meets basic packaging needs, affordable.

Other types: For example, trendy and retro styles, designed according to fashion trends or retro styles.

Printing Process

The printing processes for non-woven bags mainly include screen printing, water transfer printing, and gravure printing. Among them, screen printing is a more commonly used process, but may have problems such as odor, uneven color, and easy peeling. Water transfer printing uses water-based elastic glue as the printing medium, with advantages such as good coloring power, strong covering power, washability, and no odor. Gravure printing is suitable for specific products such as composite non-woven bags.

Environmental Advantages

Compared with traditional plastic bags, non-woven bags have significant environmental advantages. First, non-woven bags can be reused and washed, reducing the use of disposable packaging materials such as plastic bags. Second, non-woven materials are easy to decompose and will not cause long-term environmental pollution. Therefore, non-woven bags are widely used in environmental protection publicity and green packaging.

In summary, non-woven bags are an environmentally friendly packaging bag with many advantages and wide applications. In future development, with the continuous improvement of people's environmental awareness and technological progress, the application of non-woven bags will become more widespread, becoming an important force in promoting green packaging and sustainable development.