SOUND ABSORBING AND INSULATING MATERIAL WITH SUPERIOR MOLDABILITY AND APPEARANCE AND METHOD FOR MANUFACTURING THE SAME
First Claim
1. A sound absorbing and insulating material comprising:
- an inner layer comprising a first nonwoven fabric comprising an amount of about 30 to 100 wt % of a heat-resistant fiber based on the total weight of the first nonwoven fabric and a binder present in the same layer as the first nonwoven fabric and maintaining a three-dimensional structure in the inner layer; and
an outer layer comprising a second nonwoven fabric comprising an amount of about 30 to 100 wt % of a heat-resistant fiber based on the total weight of the second nonwoven fabric,wherein the outer layer is stacked on one or both sides of the inner layer.
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Accused Products
Abstract
The present invention relates to a sound absorbing and insulating material with superior moldability and appearance and a method for manufacturing the same, more particularly to a sound absorbing and insulating material consisting of an inner layer 1 formed of a first nonwoven fabric mainly formed of a heat-resistant fiber and a binder uniformly distributed inside the first nonwoven fabric and maintaining the three-dimensional structure inside the first nonwoven fabric and an outer layer 2′, 2″ formed of a second nonwoven fabric mainly formed of a heat-resistant fiber, wherein the outer layer is stacked on one or both sides of the inner layer, and a method for manufacturing the same. The sound absorbing and insulating material of the present invention has superior sound-absorbing property, flame retardancy, heat resistance, heat-insulating property and high-temperature moldability. In addition, there is no concern of deterioration of surface appearance caused by leakage of the binder due to the presence of the outer layer.
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41 Claims
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1. A sound absorbing and insulating material comprising:
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an inner layer comprising a first nonwoven fabric comprising an amount of about 30 to 100 wt % of a heat-resistant fiber based on the total weight of the first nonwoven fabric and a binder present in the same layer as the first nonwoven fabric and maintaining a three-dimensional structure in the inner layer; and an outer layer comprising a second nonwoven fabric comprising an amount of about 30 to 100 wt % of a heat-resistant fiber based on the total weight of the second nonwoven fabric, wherein the outer layer is stacked on one or both sides of the inner layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41)
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Specification