The Manufacturing Technology of Felt with Equal Density and Different Thickness

A production process and equal density technology, applied in textiles, papermaking, non-woven fabrics, etc., can solve problems such as poor sound absorption and sound insulation, secondary pollution of felt, excessive odor, etc., and achieve high cost performance, low VOC content, and reduced sound insulation. Excellent shock performance

Active Publication Date: 2018-06-29
DONGGUAN MIANJIN COTTON IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention provides a production process for felts with equal density and different thicknesses to solve the technical problems of secondary pollution, poor sound absorption and sound insulation, excessive odor and low production capacity in the felts produced in the prior art.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The manufacturing process of felt with equal density and different thickness comprises the following steps:

[0023] S1. Preliminary forming: make a preliminary forming mold and a setting mold according to the shape of the car floor, mix the raw materials for making felt evenly, and then spray the mixed raw materials on the preliminary forming mold, which is provided with vacuum adsorption holes , the raw material is adsorbed on the primary forming mold by vacuum, and then high-temperature steam is passed into the primary forming mold. The temperature of the high-temperature steam is 170° C., and the pressure of the high-temperature steam is 1 MPa. softening, the preliminary forming mold is clamped, and the softened raw material is preliminarily formed into a felt of the required shape; there is a blank on the preliminary formed felt, and the shape is not smooth enough;

[0024] S2. Shaping: Send the felt preliminarily formed by S1 into the shaping mold automatically, a...

Embodiment 2

[0027] The manufacturing process of felt with equal density and different thickness comprises the following steps:

[0028] S1. Preliminary forming: make a preliminary forming mold and a setting mold according to the shape of the car floor, mix the raw materials for making felt evenly, and then spray the mixed raw materials on the preliminary forming mold, which is provided with vacuum adsorption holes The raw material is adsorbed on the primary forming mold by vacuum, and then high-temperature steam is passed into the primary forming mold. The temperature of the high-temperature steam is 200°C, and the pressure of the high-temperature steam is 100MPa. softening, the preliminary forming mold is clamped, and the softened raw material is preliminarily formed into a felt of a desired shape;

[0029] S2. Shaping: Send the felt preliminarily formed by S1 into the shaping mold, and then pass high-temperature steam into the shaping mold. The temperature of the high-temperature steam ...

Embodiment 3

[0035] The manufacturing process of felt with equal density and different thickness comprises the following steps:

[0036] S1. Preliminary forming: make a preliminary forming mold and a setting mold according to the shape of the car floor, mix the raw materials for making felt evenly, and then spray the mixed raw materials on the preliminary forming mold, which is provided with vacuum adsorption holes , the raw material is adsorbed on the primary forming mold by vacuum, and then high-temperature steam is passed into the primary forming mold. The temperature of the high-temperature steam is 180° C., and the pressure of the high-temperature steam is 50 MPa. softening, the preliminary forming mold is clamped, and the softened raw material is preliminarily formed into a felt of a desired shape;

[0037] S2. Shaping: Send the felt preliminarily formed by S1 into the shaping mold, and then pass high-temperature steam into the shaping mold. The temperature of the high-temperature st...

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Abstract

The invention relates to the technical field of felt manufacturing process, in particular to a technology for manufacturing equal-density and unequal-thickness felt. The technology includes the first step of primary forming, wherein a primary forming mould and a shaping mould are manufactured according to the shape of an automobile floor, raw materials for manufacturing the felt are evenly mixed, then the evenly mixed raw materials are sprayed onto the primary forming mould, vacuum adsorption holes are formed in the primary forming mould, the raw materials are arranged on the primary forming mould through vacuum adsorption, high-temperature steam is introduced into the primary forming mould, the raw materials are softened under the action of high-temperature steam, the primary forming mould is assembled, and the softened raw materials are primarily formed into felt in a required shape; the second step of shaping. The primary forming mould and the shaping mould are manufactured according to the shape of the automobile floor, and the formed felt is equal in density and unequal in thickness, is perfectly attached to the corresponding automobile floor, and is flat and smooth in surface and excellent in sound isolation and shock absorption performance; smell meets the standards, the whole process is high in automation degree, and work efficiency is greatly improved.

Description

technical field [0001] The invention relates to the technical field of felt production technology, in particular to the production technology of felt with equal density and different thickness. Background technique [0002] The finished product of the felt was in the state of equal density and equal thickness. In order to meet the unevenness of the car floor, it is usually solved by sticking felts of different thicknesses on the surface of the felt. The above treatment method has the following disadvantages: secondary pollution will be generated on the felt, and the felt and Inadequate adhesion between the felts will result in poor sound-absorbing and sound-insulating effects; during the molding process of the felts, organic solvents are wrapped in them, and after molding, the solvents are slowly released and the smell is strong. Therefore, the existing felts installed in the car have Odor, which may not meet the standard, is a long-standing problem in the industry at presen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D04H1/22D04H1/12
CPCD04H1/12D04H1/22
Inventor 方惠光
Owner DONGGUAN MIANJIN COTTON IND
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