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
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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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