Nonwoven bag manufacturers analyze the difference

Nonwoven bag manufacturers analyze the difference between wet nonwoven fabric and dry nonwoven fabric

The main raw material of nonwoven lamination bag is nonwoven fabric, today Chiterion take you to understand the nonwoven fabric.

Nonwoven fabrics are divided into three categories according to the processing method: wet nonwovens, dry nonwovens and polymer direct netting method. They are completely different in materials, equipment and process. Let us explain the difference between wet nonwoven and dry nonwoven.

The difference between wet nonwoven fabrics and dry nonwoven fabrics on the web:

Wet method into a network:

Water as a medium, so that the short fibers are uniformly suspended in water, through the action of water flow, so that the fibers are deposited on the permeable curtain or porous roller, forming a wet fiber network. The International Nonwovens Association's definition is: wet net is a paper-like nonwoven fabric deposited by the sink suspension of fibers, and then a series of processing by the solid net and so on. In other words, a wet nonwoven is a fibrous web made from water, fibers and chemical additives dehydrated in a special former. The nonwoven obtained after fixing the network by physical and chemical methods.

Dry method of forming network:

Under dry conditions, natural fibers or chemical short fibers are used to form fiber network by mechanical, airflow, centrifugal force and other methods.

The difference between wet nonwoven fabrics and dry nonwoven fabrics in raw materials:

Wet nonwoven raw materials:

Most of the raw materials used in wet nonwoven fabrics are hygroscopic, composed of natural degradation of fibers, fiber length is generally 2-12mm. the equipment is a specific device modified by paper machine technology, the process is evolved from the paper technology. Wet production of nonwoven products change strongly, wet production of nonwoven fabrics with other processes can not be compared with the advantages: such as smooth cloth surface, does not irritate the skin, longitudinal and transverse strength difference is small, tensile strength is balanced, density uniformity is good, no static electricity and so on. It is characterized by easy natural degradation of waste, which is conducive to environmental protection.

Dry nonwoven raw materials:

Most of the raw materials of dry nonwoven fabrics are made up of chemical fibers, and the length is generally above 38mm. The key is that dry nonwoven fabrics cannot be naturally degraded. At present, the so-called degradable nonwoven fabrics on the market should actually be cracked, although its type of broken, but its chemical substances have not changed.