Sound absorption and noise reduction pad
Through the sound absorption and noise reduction pad of multi-layer composite structure, the problem of complex construction and poor results of existing water pipe noise reduction materials is solved, achieving better noise reduction effect and vibration frequency reduction.
Patent Information
- Application Number
- CN202422534354.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-21
- Publication Date
- 2025-08-15
- Estimated Expiration
- 2034-10-21
AI Technical Summary
The existing water pipe noise reduction materials are troublesome to construct and have poor noise reduction effects, which cannot effectively reduce the noise during drainage of water pipes in the home bathroom and kitchen.
A multi-layer material composite structure is adopted, including coated non-woven fabric, PP particle hot pressed salivation composite layer, acoustic sound insulation felt, water glue composite layer and acoustic noise reduction rubber-plastic corrugated cotton. The sound absorption noise reduction pad is formed through composite connections, and noise at different frequencies is absorbed and reflected by the characteristics of different materials.
It significantly improves the sound insulation effect of the water pipes, reduces the overall vibration frequency, and achieves better noise reduction performance.
Smart Images
Figure CN223224021U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of water pipe noise reduction, in particular to a sound-absorbing and noise-reducing pad. Background Art
[0002] During renovation, the water pipes in the family bathroom and kitchen make a loud noise when draining. The excessive sound of drainage will affect people's lives, so it is generally necessary to wrap sound insulation materials on the outside of the water pipes. There is no clear special material in the market, so the existing noise reduction materials generally use damping sheets for shock absorption, and then wrap rubber and plastic sponges for further noise reduction. The construction of this noise reduction material is relatively troublesome, and the noise reduction effect is far from meeting the standard. Utility Model Content
[0003] The purpose of the utility model is to provide a sound absorbing and noise reducing pad to solve the above-mentioned deficiencies in the technology.
[0004] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sound-absorbing and noise-reducing pad, comprising: a coated non-woven fabric, a PP particle hot-pressed cast composite layer is provided at the bottom end of the coated non-woven fabric, an acoustic sound insulation felt is provided at the bottom end of the PP particle hot-pressed cast composite layer, the coated non-woven fabric and the acoustic sound insulation felt are compositely connected through the PP particle hot-pressed cast composite layer, a water-gel composite layer is provided at the bottom end of the acoustic sound insulation felt, and acoustic noise-reducing rubber-plastic corrugated cotton is provided at the bottom end of the water-gel composite layer, and the acoustic sound insulation felt and the acoustic noise-reducing rubber-plastic corrugated cotton are bonded together through the water-gel composite layer.
[0005] Preferably, the coated non-woven fabric is formed by combining a non-woven fabric and a smooth OPP film layer.
[0006] Preferably, the bottom end of the acoustic noise reduction rubber-plastic corrugated cotton is corrugated in shape.
[0007] In the above technical solution, the technical effects and advantages provided by the utility model are:
[0008] By using multiple layers of materials for compounding, the surface coated non-woven fabric is formed by OPP film and non-woven fabric, the middle layer is acoustic sound insulation felt, and the inner layer uses acoustic noise reduction rubber and plastic corrugated cotton. The multi-layer composite effect is significant. The acoustic noise reduction rubber and plastic corrugated cotton in the inner layer absorbs and reflects high-frequency sounds, and the acoustic sound insulation felt in the outer layer blocks low-frequency noise. The weight per square meter reaches 3.8 kilograms. The overall weight increase can also reduce the overall vibration frequency of the sewer pipe, and the sound insulation effect is better. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.
[0010] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0011] Figure 2 This is a schematic diagram of the overall structure of the utility model when viewed from above;
[0012] Figure 3 It is a schematic diagram of the overall explosion structure of the utility model.
[0013] Description of reference numerals:
[0014] 1. Laminated non-woven fabric; 2. PP particle hot-pressed cast composite layer; 3. Acoustic sound insulation felt; 4. Water-gel composite layer; 5. Acoustic noise reduction rubber-plastic corrugated cotton. DETAILED DESCRIPTION
[0015] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.
[0016] The utility model provides Figures 1 to 3 The sound-absorbing and noise-reducing pad shown in the figure comprises: a coated non-woven fabric 1, which is a composite of a non-woven fabric and a smooth OPP film layer. The surface of the coated non-woven fabric 1 is smooth and easy to wrap with tape, and the tape has better adhesion. The appearance color and pattern can be customized, which is beautiful and generous. The bottom end of the coated non-woven fabric 1 is provided with a PP particle hot-pressed cast composite layer 2, and the bottom end of the PP particle hot-pressed cast composite layer 2 is provided with an acoustic sound insulation felt 3. The acoustic sound insulation felt 3 can reduce the vibration frequency of the entire pipeline and block low-frequency noise. The coated non-woven fabric 1 and the acoustic sound insulation felt 3 are formed by hot-pressing PP particles. The cast composite layer 2 is compositely connected, and the PP particle hot-pressed cast composite layer 2 can composite the surface coated non-woven fabric 1 and the acoustic sound insulation felt 3 together. The bottom end of the acoustic sound insulation felt 3 is provided with a water-gel composite layer 4, and the bottom end of the water-gel composite layer 4 is provided with an acoustic noise reduction rubber-plastic corrugated cotton 5. The bottom end of the acoustic noise reduction rubber-plastic corrugated cotton 5 is a corrugated shape. The acoustic noise reduction rubber-plastic corrugated cotton 5 can effectively reduce high-frequency noise. The surface corrugated wrapping layer forms a cavity to reflect the sound for the second time. The acoustic sound insulation felt 3 and the acoustic noise reduction rubber-plastic corrugated cotton 5 are bonded together by the water-gel composite layer 4.
[0017] Use traditional damping sheets and aluminum foil to make a square box, and then use this product to make a square box. Use a decibel meter to test the normal indoor environment and record the data. Then use a mobile phone to play the sound of normal water pipe drainage and record the data. Then, place the sound of water flow inside the two square boxes respectively, measure and record the sound data that can be heard outside, so that you can get the data comparison in Table 1.
[0018] Material First measurement data / dB Second measurement data / dB Ambient Sound 35.9 40.1 Water flow sound 71.3 70.8 Damping sheet plus aluminum foil 69.7 69.0 Materials of this product 48.0 48.6
[0019] Table 1
[0020] This product is composited with multiple layers of materials. The surface coated non-woven fabric 1 is composed of OPP film and non-woven fabric. The middle layer is acoustic sound insulation felt 3. The inner layer uses acoustic noise reduction rubber and plastic corrugated cotton 5. The multi-layer composite effect is significant. The acoustic noise reduction rubber and plastic corrugated cotton 5 of the inner layer absorbs and reflects high-frequency sounds, and the acoustic sound insulation felt 3 of the outer layer blocks low-frequency noise. The weight per square meter reaches 3.8 kilograms. The increase in overall weight can also reduce the overall vibration frequency of the sewer pipe, and the sound insulation effect is better.
[0021] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.
Claims
1. A sound-absorbing and noise-reducing pad, characterized in that: include: A coated non-woven fabric (1), wherein the bottom end of the coated non-woven fabric (1) is provided with a PP particle hot-pressed cast composite layer (2), the bottom end of the PP particle hot-pressed cast composite layer (2) is provided with an acoustic sound insulation felt (3), the coated non-woven fabric (1) and the acoustic sound insulation felt (3) are compositely connected via the PP particle hot-pressed cast composite layer (2), the bottom end of the acoustic sound insulation felt (3) is provided with a water-gel composite layer (4), the bottom end of the water-gel composite layer (4) is provided with acoustic noise reduction rubber-plastic corrugated cotton (5), and the acoustic sound insulation felt (3) and the acoustic noise reduction rubber-plastic corrugated cotton (5) are bonded together via the water-gel composite layer (4).
2. The sound-absorbing and noise-reducing pad according to claim 1, characterized in that: The coated non-woven fabric (1) is formed by combining a non-woven fabric and a smooth OPP film layer.
3. The sound-absorbing and noise-reducing pad according to claim 1, characterized in that: The bottom end of the acoustic noise reduction rubber-plastic corrugated cotton (5) is in a corrugated shape.