The pre-wetting of the network into the spunlace area, spunlace water jet nozzle spray a number of micro-jet water jet, vertical shot to the network. The water jet causes the displacement of a part of the surface fiber in the web, including the vertical movement to the opposite side of the web. When the water jet penetrates the net, it is subjected to the rebound of the curtain or the drum, and scattered to the web in different orientations Negative. In the direct impact of water jet and rebound under the dual role of water, fiber in the fiber displacement, interspersed, entangled, together, the formation of numerous flexible entanglement point, so that the network is reinforced.
The vertical injection of water jet to the web prevents the destruction of the web structure and maximizes the energy of the water jet, thereby improving the performance of the spunlace nonwoven material.
Spunlace reinforcement methods are flat net spunlace reinforcement, drum spunlace reinforcement and drum and flat net combination of three types of spunlace reinforcement.
Tailor curtain weaving structure and the appearance of the appearance of the structure of the wire spoon thorn reinforcement process, the spitters along the drum circumference arrangement, the net adsorption on the drum, to accept the spout jet water jet jet. The net is adsorbed on the drum, there is no deviation phenomenon, is conducive to high-speed production, while the net in the spunlace area was curved surface, to accept the spear surface relaxation, reverse compression, which is conducive to water jet penetration, effectively Tangled fiber.
Drum for the metal cylinder perforated structure, equipped with dehydration device, and flat net spunlace reinforcement compared to the net curtain, the water has a good rebound effect.
Fourth, the combination of drum and flat net spunlace reinforcement In the spunlace reinforcement process, the combination of flat and drum type can be used to avoid weaknesses, to play their respective advantages, usually the first level, the second level for the drum spunlace , The third level for the flat network spunlace.
The number of spunlaced head and water spunlace reinforcement technology commonly used in the number of sparks 7 to 12, the commonly used water pressure of 60 ~ 250Bar, depending on the quality of fiber area per unit area, production speed, etc., spithead pressure settings usually Low to high → low.
Water Flow Structure Analysis According to hydrodynamics, water is ejected from the water spray hole, which can be called a non-submerged free turbulent jet. After the water jet is ejected from the water spray hole, the jet is gradually converted from the bundled jet to the dispersed water droplet due to the lateral pulsation of the turbulent jet and the frictional resistance of the air convection beam.
The purpose of dehydration is to remove the retention of water in the network, so as not to affect the tangent effect of the next spunlace. When the amount of water in the network is more, it will cause the dispersion of water jet energy, which is not conducive to fiber entanglement. After the end of the spunlace process will be the lowest moisture in the network, is conducive to reducing drying energy consumption.
Hangzhou Guozhen Industrial Co., Ltd.
Add:No. 588 Zhongxin Road, Waisha Industrial Zone, Lingqiao
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