Patent Application
20220055339
Not applicable.
The present invention relates generally to a construction sound dampening pad, and more particularly to an innovative design of a construction sound dampening pad structure to effectively avoid the problem of pseudo-adhesive state.
Construction sound dampening pads (or anti-vibration pads) are mostly used as a floor structure for multi-story buildings. Some of them are also used as a separating wall structure. They are used to reduce and suppress noise and vibration. At present, as most people living in urban areas have neighbors on the same floor or on the next floor, it is important to use such building materials as sound dampening pads.
Common construction sound dampening pads are usually made of rubber pads. In actual implementations, when used as a floor structure, cement mortar is used to adhere it to the concrete floor. Because the surface of the rubber pad is not suitable for laying floor tiles, a cement mortar layer with thickness of at least 5 cm must be firstly applied on the surface of the rubber pad. Then, floor tiles are laid (usually by using tile gripper) on the cement mortar layer. In the above-mentioned structure, as the rubber pad itself is a hydrophobic material, it cannot be bonded perfectly with the cement mortar layer. Gaps may easily occur between the two materials. Such a condition is called “pseudo-adhesive” state in the industry. Over time, it will become easy for water or air to penetrate into the gaps, causing the cement mortar layer to have partial protrusions or deformations. It may even cause breakage of the floor tiles. In order to avoid this problem, a steel mesh is applied in the cement mortar layer structure to increase the structural strength of the cement mortar layer. However, this method also has drawbacks. The cement mortar layer must be at least 10 cm thicker to meet the construction engineering standard that each single mortar layer must be thicker than 5 cm to reach the minimum strength required. As a result, in order for the floor to have the sound-dampening function, the floor must be thickened for more than 10 cm. Otherwise, the aforementioned problems of partial protrusions and deformations may happen. And the water penetrating into the gaps may cause corrosion of the steel mesh, which consequently lead to less durability of the building structure. However, the aforementioned method only changes the position of the pseudo-adhesive state to another layer structure. The problem of pseudo-adhesive state is not fundamentally solved.
In the current construction industry, the conventional construction sound dampening pads are often criticized for the following problems: high engineering cost, low efficiency, added load of the floor (or separating wall) and less reliability of the structure. In short, the main problems in connection with the construction sound dampening pads can all be traced to the problem of pseudo-adhesive state between the sound dampening pad and the cement mortar layer, which causes unreliable bonding.
The main object of the present invention is to provide a construction sound dampening pad to avoid pseudo-adhesive state. It aims to make a breakthrough in solving the technical problems by developing an ideally practical new-style construction sound dampening pad.
In view of the above object, the invention solves problems through the following main technical features that the construction sound dampening pad includes: a foamed layer, in the form of a soft and flexible pad structure made of either rubber or polymer foamed in an appropriate proportion. The foamed layer having a thickness and having a first surface and a second surface. A first porous fiber layer is provided, being a soft, flexible, compressible, ductile, and porous layer structure containing fiber materials. The first porous fiber layer is attached to the first surface of the foamed layer. A second porous fiber layer is provided, being a soft, flexible, compressible, ductile, and porous layer structure containing fiber materials. The second porous fiber layer is attached to the second surface of the foamed layer. Specifically, the first porous fiber layer, the second porous fiber layer, and the foamed layer are bonded together by attaching the first porous fiber layer to the first surface, and attaching the second porous fiber layer to the second surface when the foamed layer is still not cooled and solidified during the process of melting and foaming, so as to form a structure wherein part of the structure of the first porous fiber layer penetrates into the first surface, and part of the structure of the second porous fiber layer penetrates into the second surface to achieve a strong and reliable bonding.
The main efficacy and advantage of the present invention is that, through the structural design that both sides of the foamed layer are reliably bonded with a porous fiber layer, in actual applications, the construction sound dampening pad can be firmly bonded with the concrete layer or floor tiles by simply using tile gripper or cement mortar. Because the porous fiber layer can realize an interlocking effect when the tile gripper or other cement mortar is hardened. Such an interlocked layer structure can effectively avoid the aforementioned problem of pseudo-adhesive state between the rubber pad and the cement mortar layer. Meanwhile, it can substantially reduce the engineering cost and time in applying cement mortar or laying a steel mesh. Therefore, the cost of construction sound-dampening structures is greatly reduced, the engineering efficiency can be greatly enhanced. Furthermore, through the present invention, the floor or wall structures can have less load and better reliability. It is a practical inventive step indeed.
The construction sound dampening pad A comprises the following components: a foamed layer 10, in the form of a soft and flexible pad structure made of either rubber or polymer through foaming in an appropriate proportion (note: preferred embodiment also includes compressible and ductile property), said foamed layer 10 having a thickness and having a first surface 11 and a second surface 12; a first porous fiber layer 20, being a soft, flexible, compressible, ductile, and porous layer structure containing fiber materials, said first porous fiber layer 20 being attached to the first surface 11 of the foamed layer 10; a second porous fiber layer 30, being a soft, flexible, compressible, ductile, and porous layer structure containing fiber materials, said second porous fiber layer 30 being attached to the second surface 12 of the foamed layer 10. Specifically, the first porous fiber layer 20, the second porous fiber layer 30, and the foamed layer 10 are bonded together by attaching the first porous fiber layer 20 to the first surface 11, and attaching the second porous fiber layer 30 to the second surface 12 when the foamed layer 10 is still not cooled and solidified during the process of melting and foaming, so as to form a structure wherein part of the structure of the first porous fiber layer 20 penetrates into the first surface 11, and part of the structure of the second porous fiber layer 30 penetrates into the second surface 12 to achieve a strong and reliable bonding.
Specifically, the first porous fiber layer 20 and the second porous fiber layer 30 are made of either non-woven cloth or woven cloth (note: the two can be made of different fiber materials).
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Furthermore, said construction sound dampening pad A can be made of one single layer or a plurality of layers; when made of a plurality of layers, between the different layers of the construction sound dampening pad A, cement mortar is used to bond the first porous fiber layer 20 and the second porous fiber layer 30. The plurality of layers of the construction sound dampening pad A disclosed in this embodiment offers multiplied elastic buffering effect. Moreover, thanks to the property of fibers, when multiple layers are laminated together, the pad will have better friction and bonding effect. This effect cannot be achieved by directly stacking foamed pads.
Based on the aforementioned structural design and technical features, the construction sound dampening pad A disclosed in the present invention can be applied as a device to reduce noise and vibration in floor and separating wall structures.
| Number | Date | Country | Kind |
|---|---|---|---|
| 109128095 | Aug 2020 | TW | national |
