SE455108B - INSULATION ELEMENT - Google Patents

Description

455 108 It has been shown that the addition of U-profiles in sound insulation elements significantly increases the sound insulation of the elements. Particularly advantageous is such an arrangement in which the U-profiles are arranged alternately at the inner and outer side of each outer layer (for example rock wool). With this arrangement, you manage to increase the element's sound insulation from the value 39 dB to the value 44 dB.

The gluing of U-profiles to the outer layer also increases the rigidity of the element.

The invention is explained in more detail below by referring to the accompanying drawings, in which figure 1 represents a sound insulation element seen from the front, figure 2 represents a cross-section of a sound insulation element, and figure 3 represents a cross-section of a sound insulation element in which the U-profiles are arranged in another way than in Figure 2.

Figure 1 shows the sound insulation element 1 from the front. The U-profiles 6, 8, 10 arranged in the element have also been drawn there. The U-profiles have been printed into the rock wool of the outer layer. By gluing the U-profiles to the outer layer, a better rigidity of the element is achieved.

Figure 2 shows a cross-section of a sound insulation element. The element consists of two outer layers 3 and 5, which are rock wool. A glass wool layer 4 has been arranged between these. The figure also shows the U-profiles 6, 8 and 10 and the U-profiles 7, 9 and 11 located opposite them.

By arranging the U-profiles alternately on the outer and the inner side of each outer layer, approx. 2 dB better sound insulation (44 dB) is achieved than if all U-profiles were arranged on the same side of the respective outer layer. From a production technical point of view, the U-455 108 profiles have been arranged against each other at the two outer layers. It is also possible to arrange the U-profiles alternately, e.g. as shown in Figure 3. With the latter arrangement, a sound insulation of the same class is achieved as according to the arrangement in Figure 2.

It has been shown that if you use U-profiles of some relatively heavy material, e.g. steel, their sound insulation properties are significantly better than if you use U-profiles of a lighter material, e.g. aluminum or plastic. Aluminum is also more expensive and does not have the same fire safety properties as steel. If you use U-profiles of steel, the weight gain they achieve is about 25%, so the weight of the elements rises from 21 kg / m to 26 kg / m. This value is below the value that can be approved for a man to lift in continuous assembly work, which is why the element according to the invention does not cause additional costs during assembly in the form of extra labor.

Claims (7)

455 108 Patent claims _ Sound insulation element (1), in particular in the case of ships, which consists of at least three layers (3, 4, 5), of which the outer layers (3, 5) are suitably rock wool and the intermediate layer (4) or layers are suitably glass wool, characterized in that U-profiles (6-1) are arranged at the outer layers (3, 5). Element according to claim 1, characterized in that the U-profiles (6-11) are arranged at the outer layers (3, 5) along the entire length of the element (1). Element according to any one of the preceding claims, characterized in that the U-profiles (6-11) are pushed into the outer layers (3, 5) with the flange before so that the web part of the U-profile is against the surface of said layer . Element according to one of the preceding claims, characterized in that the U-profiles (6-11) are located alternately at the inner side and outer side of each outer layer (3, 5). Element according to one of the preceding claims, characterized in that the U-profiles (6-11) are arranged alternately against each other (6, 7; 8,9; 10,11) at the two outer layers (3, S ) so that the opposite U-profiles are located on the corresponding outer and inner side of the outer layer (3, 5). Element according to one of the preceding claims, characterized in that the U-profiles (6-II) are made of a relatively heavy, non-combustible material, preferably steel. Element according to one of the preceding claims, characterized in that the U-profiles (6-11) are glued to the outer layers (3, 5). v ..