Production method for water-repellent non-woven fabric

Abstract

The invention discloses a novel non-woven fabric and a production method thereof, particularly a production method for a water-repellent non-woven fabric, and the water-repellent non-woven fabric is mainly used as a surface material for personal hygiene care articles. The through-air nonwoven fabric is produced with fibers with water-repellent oil by the through-air method, and has good water-repellent property. The purpose of the design is to overcome the side leakage problem of conventional through-air nonwoven fabrics as the result of long penetration time or insufficient absorbing capacity, and moreover, the visual effect of thin and transparent side edges can be effectively improved. The production method is implemented by using hot air equipment to heat the sheath-core structure or eccentric core structure fibers with the water-repellent oil, and is a novel production method for through-air nonwoven fabrics.

Description

technical field

[0001] The invention relates to a nonwoven fabric and a manufacturing method thereof, in particular to a water-repellent air-through nonwoven fabric and a manufacturing method thereof. Background technique

[0002] Thermally bonded nonwovens have been widely used in women's hygiene products and baby diapers, usually on the surface or side, which can quickly absorb body fluids (menstrual fluid, urine) and guide them as evenly as possible into the underlying layer The absorbent body, in this way, not only keeps the skin dry, but also prevents the lateral leakage of body fluids.

[0003] Air-through nonwovens are one of the thermal bonding processes, which are widely used in personal hygiene care products because they feel soft, fluffy and can make users feel comfortable. The hot-air nonwoven fabric adopts bi-component fibers with a side-by-side structure or a sheath-core structure. After being carded into a web, the composite fibers are heated by hot air. The ...

Examples

Embodiment 1

[0022] Embodiment 1: a kind of nonwoven fabric, comprises fiber net, sheath-core structure, and described sheath-core structure is made of PET / PE composite fiber, and wherein PET layer is mutually welded together to form bridging structure by molten PE, and PET layer is curly shape. The denier of the composite fiber in the nonwoven fabric ranges in thickness from 1 to 6D, and the length ranges from 30 to 60 mm. The thickness range of non-woven fabric is 0.5-2.0mm, and the weight is 20-30g / m 2 .

[0023] Preparation of PET / PE sides with skin-core structure

[0024] Preparation steps: After fully opening the raw materials, removing impurities and mixing them, they are carded into a fiber web by a carding machine. There are too many fibers in the fiber web longitudinally, and the fiber web is sent to the hot air device by using a conveyor belt. The temperature is set at 140°C and the wind pressure is 50Hz. When the fiber web passes through the hot blast furnace, it encounters ...

Embodiment 2

[0025] Embodiment 2: A kind of nonwoven fabric, comprises fiber net, sheath-core structure, and described sheath-core structure is made of PP / PE composite fiber, and wherein PP layer is mutually welded together to form bridging structure by molten PE, and PP layer is curly shape. The denier of the composite fiber in the nonwoven fabric ranges in thickness from 1 to 6D, and the length ranges from 30 to 60 mm. The thickness range of non-woven fabric is 0.5-2.0mm, and the weight is 20-30g / m 2 .

[0026] Preparation of PP / PE side with skin-core structure

[0027] Preparation steps: After the raw materials are fully opened and mixed, they are carded into a fiber web by a carding machine. The fibers in the fiber web are arranged in a longitudinal direction, and the fiber web is sent to the hot air device-flat mesh hot air furnace by a conveyor belt, and the temperature is set. Set at 135°C, wind pressure 30Hz, during the process of passing through the hot blast furnace, the fiber...

Embodiment 3

[0028] Embodiment 3: a kind of nonwoven fabric, comprises fiber web, sheath-core structure, and described sheath-core structure is made of PET / PE composite fiber, and wherein PET layer is mutually welded together to form bridging structure by molten PE, and PET layer is curly shape. The composite fibers in the non-woven fabric have a thickness range of 6-10D and a length range of 10-30 mm. The thickness of the nonwoven fabric ranges from 0.1 to 0.5mm, and the weight is 10 to 20g / m 2 .

[0029] Preparation of PP / PE side with skin-core structure

[0030] Preparation steps: After fully opening the raw materials, removing impurities and mixing them, they are carded into a fiber web by a carding machine. There are too many fibers in the fiber web longitudinally, and the fiber web is sent to the hot air device by using a conveyor belt. The temperature is set at 140°C and the wind pressure is 20Hz. When the fiber web passes through the hot blast furnace, it encounters hot air with...

technical field

[0001] The invention relates to a nonwoven fabric and a manufacturing method thereof, in particular to a water-repellent air-through nonwoven fabric and a manufacturing method thereof. Background technique

[0002] Thermally bonded nonwovens have been widely used in women's hygiene products and baby diapers, usually on the surface or side, which can quickly absorb body fluids (menstrual fluid, urine) and guide them as evenly as possible into the underlying layer The absorbent body, in this way, not only keeps the skin dry, but also prevents the lateral leakage of body fluids.

[0003] Air-through nonwovens are one of the thermal bonding processes, which are widely used in personal hygiene care products because they feel soft, fluffy and can make users feel comfortable. The hot-air nonwoven fabric adopts bi-component fibers with a side-by-side structure or a sheath-core structure. After being carded into a web, the composite fibers are heated by hot air. The ...

Examples

Embodiment 1

[0022] Embodiment 1: a kind of nonwoven fabric, comprises fiber net, sheath-core structure, and described sheath-core structure is made of PET / PE composite fiber, and wherein PET layer is mutually welded together to form bridging structure by molten PE, and PET layer is curly shape. The denier of the composite fiber in the nonwoven fabric ranges in thickness from 1 to 6D, and the length ranges from 30 to 60 mm. The thickness range of non-woven fabric is 0.5-2.0mm, and the weight is 20-30g / m 2 .

[0023] Preparation of PET / PE sides with skin-core structure

[0024] Preparation steps: After fully opening the raw materials, removing impurities and mixing them, they are carded into a fiber web by a carding machine. There are too many fibers in the fiber web longitudinally, and the fiber web is sent to the hot air device by using a conveyor belt. The temperature is set at 140°C and the wind pressure is 50Hz. When the fiber web passes through the hot blast furnace, it encounters ...

Embodiment 2

[0025] Embodiment 2: A kind of nonwoven fabric, comprises fiber net, sheath-core structure, and described sheath-core structure is made of PP / PE composite fiber, and wherein PP layer is mutually welded together to form bridging structure by molten PE, and PP layer is curly shape. The denier of the composite fiber in the nonwoven fabric ranges in thickness from 1 to 6D, and the length ranges from 30 to 60 mm. The thickness range of non-woven fabric is 0.5-2.0mm, and the weight is 20-30g / m 2 .

[0026] Preparation of PP / PE side with skin-core structure

[0027] Preparation steps: After the raw materials are fully opened and mixed, they are carded into a fiber web by a carding machine. The fibers in the fiber web are arranged in a longitudinal direction, and the fiber web is sent to the hot air device-flat mesh hot air furnace by a conveyor belt, and the temperature is set. Set at 135°C, wind pressure 30Hz, during the process of passing through the hot blast furnace, the fiber...

Embodiment 3

[0028] Embodiment 3: a kind of nonwoven fabric, comprises fiber web, sheath-core structure, and described sheath-core structure is made of PET / PE composite fiber, and wherein PET layer is mutually welded together to form bridging structure by molten PE, and PET layer is curly shape. The composite fibers in the non-woven fabric have a thickness range of 6-10D and a length range of 10-30 mm. The thickness of the nonwoven fabric ranges from 0.1 to 0.5mm, and the weight is 10 to 20g / m 2 .

[0029] Preparation of PP / PE side with skin-core structure

[0030] Preparation steps: After fully opening the raw materials, removing impurities and mixing them, they are carded into a fiber web by a carding machine. There are too many fibers in the fiber web longitudinally, and the fiber web is sent to the hot air device by using a conveyor belt. The temperature is set at 140°C and the wind pressure is 20Hz. When the fiber web passes through the hot blast furnace, it encounters hot air with...

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