Spunlaced nonwoven fabric is composed of multiple layers of fibers, and its application in daily life is also quite common. Below, Qingdao Meitai’s non-woven fabric editor will explain the production process of spunlaced non-woven fabric:
The process flow of spunlace non woven fabric:
1. Fiber raw materials → loosening and mixing → combing → interweaving and laying of nets → stretching → pre wetting → front and back water pricking → post finishing → drying → winding water → treatment cycle
2. Fiber raw materials → loosening and mixing → sorting and disorderly web → pre wetting → front and back water needling → post finishing → drying → winding → water treatment cycle
Different web forming methods affect the longitudinal and transverse strength ratio of spunlaced non-woven fabric products. Process 1 has a better adjustment of the longitudinal and transverse strength ratio of the fiber web, which is suitable for the production of spunlaced synthetic leather substrates; Process 2 is suitable for the production of water jet sanitary materials.
Pre wetting
The formed fiber mesh is fed into the water jet machine for reinforcement, and the first step is pre humidification treatment.
The purpose of pre wetting is to compact the fluffy fiber mesh, eliminate air in the fiber mesh, and enable the fiber mesh to effectively absorb the energy of the water jet after entering the water jet area, in order to strengthen the fiber entanglement effect.
Prickly thorns
The pre wetted fiber mesh enters the water jet area, and the water jet nozzle of the water jet plate sprays multiple fine water jets vertically towards the fiber mesh. The water jet causes a portion of the surface fibers in the fiber mesh to shift, including vertical movement towards the opposite side of the fiber mesh. When the water jet penetrates the fiber mesh, it is rebounded by the supporting mesh curtain or drum, scattering to the opposite side of the fiber mesh in different directions. Under the dual effects of water jet direct impact and rebound water flow, the fibers in the fiber mesh undergo displacement, interweaving, entanglement, and coalescence, forming countless flexible entanglement nodes, thereby reinforcing the fiber mesh.
Dehydration
The purpose of dehydration is to timely remove the trapped water in the fiber mesh to avoid affecting the entanglement effect during the next water puncture. When there is a large amount of water trapped in the fiber mesh, it will cause the dispersion of water jet energy, which is not conducive to fiber entanglement. After the water jet process is completed, reducing the moisture in the fiber mesh to the minimum is beneficial for reducing drying energy consumption.
Water treatment and circulation
The production process of spunlace nonwoven requires a large amount of water, with a yield of 5 tons per day and a water consumption of approximately 150m3~160m3 per hour. To save water and reduce production costs, about 95% of the water must be treated and recycled.
The above is the production process of spunbond non-woven fabric. Dongguan Liansheng Nonwoven Technology Co., Ltd. has a complete and scientific quality management system, mainly producing non-woven fabrics, spunbond non-woven fabrics, coated non-woven fabrics, hot-rolled non-woven fabrics, polypropylene non-woven fabrics and other non-woven fabric products. Our company’s non-woven fabric products are becoming increasingly popular in the market and are sold both domestically and internationally.
Post time: Mar-31-2024