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A kind of preparation method of density gradient fiber mat and fiber mat

A fiber mat and fiber technology, applied in the field of fiber mats, can solve the problems of poor elasticity and easy collapse of fiber mats

Active Publication Date: 2021-05-18
爱可比(苏州)新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current fiber mat has poor elasticity and is prone to collapse

Method used

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  • A kind of preparation method of density gradient fiber mat and fiber mat
  • A kind of preparation method of density gradient fiber mat and fiber mat
  • A kind of preparation method of density gradient fiber mat and fiber mat

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] This embodiment provides a method for preparing a fiber mat, comprising the following steps:

[0024] Firstly, each fiber bundle in the raw material is opened by using a fiber opener to obtain raw material fibers after opening. The raw material fibers used are low-melting point hot-melt adhesive fibers and elastomer fibers, wherein the low-melting point hot-melt adhesive fibers are PET fibers with a melting point of about 130°C, and the elastomer fibers are three-dimensional crimped hollow fibers with a melting point of about 220°C. The content of the elastomer fiber was 60 wt%, and the content of the binder fiber was 40 wt%.

[0025] The second step is to mix the fiber raw materials, and use a fiber carding machine to card the loosened fibers to eliminate entanglement.

[0026] The third step is to use a web laying machine to spread the carded fibers evenly. After being carded into a uniform fiber web by a fiber carding machine, a continuous fiber network structure w...

Embodiment 2

[0032] The main method and steps of embodiment 2 are similar to embodiment 1, and the difference is that the used bonding fiber is a two-component sheath-core fiber with a melting point of about 140° C., and the elastomer fiber is an elk fiber (a) with a melting point of about 200° C. It is a kind of polyester cushioning fiber, which differs from ordinary fiber cushioning materials in that its fibers are arranged in a longitudinal structure). The content of the elastomer fiber was 65 wt%, and the content of the binder fiber was 35 wt%. The needling depth is 15mm, the speed is 7.5m / min, and the needling density is 480 pricks / cm 2 . During hot pressing, the heating temperature is 220° C., the wind speed is 30 m / s, and the fiber mat is pressed to a thickness of 6 cm.

Embodiment 3

[0034] The main method and steps of embodiment 3 are similar to embodiment 1, and the difference is that the used bonding fiber is the polyolefin fiber that fusing point is about 120 ℃, and the elastic body fiber is the polyether ester fiber (PP fiber) that fusing point is about 200 ℃. ). The content of the elastomer fiber was 70 wt%, and the content of the binder fiber was 30 wt%. The needling depth is 11mm, the speed is 6.0m / min, and the needling density is 320 pricks / cm 2 , the heat drying temperature is 140°C during the second hot pressing, the wind speed is 10m / s, and the fiber mat is pressed to a thickness of 10cm.

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Abstract

The invention discloses a method for preparing a fiber mat. The elastomer fiber and the bonding fiber are mixed as a raw material, and a unit fiber layer with a multi-layer structure is first formed through steps such as opening, carding, laying, and presetting, and then through the steps of The stacked multiple unit fiber layers are hot-pressed to finally produce a finished fiber mat with a multi-layer density gradient structure. The fiber mat manufactured by the method has a density gradient structure, the pressure applied to it can be buffered in multiple stages, the anti-slump performance is greatly improved, and the light weight of the fiber mat is guaranteed. Glue is not used in the production process and is harmless to the human body.

Description

technical field [0001] The invention belongs to the technical field of fiber mats, in particular to a method for preparing a fiber mat and a fiber mat prepared therefrom. Background technique [0002] Because of its high comfort, cushions have become an indispensable household item in people's homes, and are widely used as mattresses, seat cushions, etc. Cushions generally include polyurethane sponge pads, coconut palm pads, and spring pads. However, most of the existing polyurethane sponge pad raw materials are petroleum by-products such as TDI and MDI, which are toxic in themselves, and production personnel are prone to disease after long-term contact, and the product has poor air permeability and poor user experience; it needs to be used in the manufacturing process of coconut palm pad If a large amount of glue is used for bonding, the formaldehyde content will seriously exceed the standard, and inhalation will cause harm to the human body; spring mattresses have problem...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D04H1/542D04H1/4374D04H1/485D04H1/4391D04H1/732
CPCD04H1/4374D04H1/4391D04H1/485D04H1/542D04H1/732
Inventor 李中勇
Owner 爱可比(苏州)新材料有限公司
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