3D textured nonwoven fabric and its forming machine

Abstract

A three-dimensional textured nonwoven fabric and its forming machine are disclosed. The machine body has an inner cylinder, a rotating cylinder, and an outer cylinder concentrically arranged inside, with a channel formed between the rotating cylinder and the outer cylinder. The rotating cylinder drives the fiber cotton web layer to move along the channel, and hot air is used to heat and soften the fiber cotton web layer. Then, the air force of the blower and suction knife is used to make the fiber cotton web layer sink into the forming hole of the rotating cylinder to form various arc protrusions. Short fibers are then filled into the arc concave openings of each arc protrusion, so that the fiber cotton web layer and each arc protrusion and short fibers are melted and bonded to form a solid three-dimensional textured nonwoven fabric. This ensures the three-dimensional effect and durability of each arc protrusion of the nonwoven fabric, accelerates the diffusing and absorption of physiological fluids in all directions, reduces liquid backflow, and improves breathability, dryness and comfort.

Claims

1. A three-dimensional textured nonwoven fabric forming machine, comprising: The unit consists of an internal heating space and an air inlet. A rotating drum is horizontally pivotally mounted in the heating space of the machine body. The rotating drum has a plurality of forming holes arranged circumferentially. The front end of the rotating drum has a cylinder opening extending out of the machine body, and the rear end of the rotating drum has a rotating shaft extending out of the machine body. An inner cylinder is concentrically fitted inside the rotating drum. The front end of the inner cylinder is connected to an air outlet pipe and an air intake pipe extending out of the cylinder opening and is fixed to the machine body. The inner cylinder has a plurality of through holes arranged circumferentially. An outer cylinder is concentrically fitted outside the rotating drum. The outer cylinder is fixed front and rear to the heating space of the machine body. The outer cylinder has a plurality of air holes arranged circumferentially. A circular channel is formed between the outer cylinder and the rotating drum. The outer cylinder has an inlet, a cotton feeding port, and an outlet sequentially arranged along this channel. An air knife assembly includes a blowing knife and a suction knife. The blowing knife is horizontally disposed on the outer side of the outer cylinder, corresponding to the inlet and the cotton feeding port. The blowing knife is connected to a blowing pipe extending out of the machine body, allowing the blowing knife to blow air towards the forming hole of the rotating cylinder. The suction knife is horizontally disposed on the inner side of the inner cylinder, corresponding to the blowing knife, and is connected to a suction pipe, allowing the suction knife to suck air towards the forming hole of the rotating cylinder and the blowing knife. A cotton feeding device is disposed on the machine body. The cotton feeding device includes a cotton feeding box connected to a cotton feeding pipe, the bottom end of which is connected to the cotton feeding port of the outer cylinder. A hot air drying device is installed on the outside of the machine body. The hot air drying device includes a first fan, a second fan, and a heater. The first fan is connected to the heater and the air outlet of the inner cylinder by a first pipe at both ends, and the heater is connected to the air inlet of the machine body, so that hot air circulates through the hot air drying space, the outer cylinder, the rotating cylinder, the inner cylinder, the first fan, and the heater. The second fan is connected to the blowing pipe and the suction pipe by a second pipe at both ends, so that hot air circulates through the blowing blade, the outer cylinder, the rotating cylinder, the inner cylinder, the suction blade, and the second fan. As the rotating drum continues to rotate, it moves the fiber cotton web layer from the inlet along the channel. With the help of hot air heating, the fiber cotton web layer gradually softens. The fiber cotton web layer then passes through the air knife assembly. Using the blowing force of the air knife and the suction force of the suction knife, the fiber cotton web layer is made to fall into the forming holes of the rotating drum to form arc-shaped protrusions facing the inner drum. Then, the cotton feeding device's cotton feeding pipe delivers short fibers to fill the arc-shaped recesses of each arc-shaped protrusion to form short fiber layers. The fiber cotton web layer and each arc-shaped protrusion and each short fiber layer are melted and bonded to form a solid three-dimensional textured nonwoven fabric, which is then sent out from the outlet of the channel.

2. The three-dimensional embossed nonwoven fabric forming machine as described in claim 1, wherein the machine body and the outer cylinder are configured as a structure that can be controlled to separate and merge.

3. The three-dimensional nonwoven fabric forming machine as described in claim 1, wherein the machine body is provided with a bracket below the opening of the rotating drum, and a plurality of upper rollers are pivotally connected to the bracket, each of the upper rollers contacting and supporting the outer circumference of the opening.

4. The three-dimensional embossed nonwoven fabric forming machine as described in claim 3, wherein the bracket is connected to an actuator, the actuator driving the bracket to rise and support the cylinder opening.

5. The three-dimensional embossed nonwoven fabric forming machine as described in claim 3, wherein the front end of the inner cylinder is provided with a plurality of lower rollers, each of which rolls downwards to contact the inner circumference of the cylinder opening.

6. The three-dimensional nonwoven fabric forming machine as described in claim 1, wherein the machine body is provided with a fixing frame at the lower edge of the air outlet pipe of the inner cylinder, and the rear end of the inner cylinder is pivotally connected to the center of the rotating drum.

7. The three-dimensional nonwoven fabric forming machine as described in claim 1, wherein a plurality of heating tubes are provided on the outer side of the outer cylinder between the inlet of the channel and the blower blade.

8. A three-dimensional textured nonwoven fabric comprising a fiber web layer and a plurality of short fiber layers, wherein the surface of the fiber web layer is provided with a plurality of arcuate protrusions arranged in a plurality of arranged arcuate protrusions, each arcuate protrusion protruding upwards and forming an arcuate recess with an opening facing downwards inside each arcuate protrusion, and each short fiber layer filling the arcuate recess of each arcuate protrusion with short fibers, thereby allowing the fiber web layer and each arcuate protrusion and each short fiber layer to be fused and bonded together to form a solid three-dimensional textured nonwoven fabric.

9. The three-dimensional textured nonwoven fabric as described in claim 8, wherein the length of each short fiber is 3 to 7 mm.

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