Metal roof board and metal roof with heat reflection and noise reduction functions

Abstract

A metal roofing board with heat reflection and noise reduction functions comprises a metal roofing body and is characterized in that a heat reflection sound absorption composite layer is compounded in a non-buckling lap joint area of a shady face of the metal roofing body. In conclusion, the metal roof board with the heat reflection and noise reduction functions has the remarkable advantages in the aspects of sound insulation, heat insulation, construction convenience, life prolonging and the like. The metal roofing board further comprises a metal roofing formed by assembling the metal roofing board, absorption of solar radiation heat can be effectively reduced, the indoor temperature can be reduced, the influence of external noise such as wind and rain on the indoor environment can be remarkably weakened, and a more comfortable and quiet living space is provided for residents.

Description

Technical Field

[0001] The utility model belongs to the technical field of building roofs, and particularly relates to a metal roof panel and a metal roof with heat reflection and noise reduction functions. Background Art

[0002] With the continuous development of modern construction technology, metal roofs have been widely used in the field of building roofs due to their light weight, high strength, good durability and beautiful appearance. Especially in large public buildings, industrial plants and other occasions, metal roofs have become the preferred material due to their excellent performance. However, despite the many advantages of metal roofs, they have also exposed some problems that need to be solved in practical applications, mainly including the two major problems of noise and heat radiation.

[0003] Noise problem: Metal roofs tend to generate a lot of noise in windy and rainy weather, mainly due to the high reflectivity and resonance characteristics of the material. To alleviate this problem, the existing technology generally adopts the practice of laying an insulation layer under the metal roof panel. Although the insulation layer can absorb and reduce noise to a certain extent, since the metal roof structure needs to be supported by tile strips, the noise may still be transmitted to the external environment through the supporting structure and cannot be completely eliminated. In addition, the noise reduction effect of the insulation layer is limited, and the improvement of the indoor environment is not significant enough.

[0004] Heat radiation problem: Metal roofs heat up quickly under sunlight, generating a large amount of heat radiation, which causes the top floor to heat up and affects living comfort. Although existing technologies have attempted to slow down heat transfer by laying an insulation layer, the insulation effect of the insulation layer is limited, and significant heat radiation can still be felt indoors, especially in hot seasons. This not only increases building energy consumption, but also reduces living quality.

[0005] Limitations of existing solutions: Existing technologies have proposed a variety of solutions to the problems of noise and heat radiation, but they all have limitations to varying degrees. For example, although coating the surface of roof tiles with heat-reflective film can solve the problem of heat reflection to a certain extent, the material selection requirements are stringent, such as not being reflective and requiring a certain degree of impact resistance. It is prone to aging when exposed to the external environment for a long time, and has a short service life.

[0006] Another common solution is to add a layer of heat-reflective film to the existing metal roof structure system, especially under the metal roof tiles. The original intention of this design is to achieve noise reduction through the insulation layer in the metal roof system, and use the heat-reflective film to reflect solar heat and reduce its transfer to the interior. However, this solution has obvious disadvantages in practical applications: the reflected heat will accumulate in the limited space between the metal roof tiles and the heat-reflective film, which not only affects the efficiency of heat reflection, but may also cause the temperature in the space to rise sharply, which in turn has an adverse effect on the overall performance and service life of the roof.

[0007] In addition, laying heat reflective film independently will inevitably increase the complexity of the construction process, which not only increases the difficulty of construction, but also reduces the construction efficiency and increases the cost and time investment of the project. Therefore, the feasibility and economy of this solution in actual engineering applications are worthy of further discussion. Utility Model Content

[0008] In view of the problems existing in the prior art, the utility model provides a metal roof panel and a metal roof with heat reflection and noise reduction functions.

[0009] The utility model is realized in this way: a metal roof panel with heat reflection and noise reduction functions comprises a metal roof body, and is characterized in that a heat reflection and sound absorption composite layer is compounded in the non-fastening overlap area of ​​the backlight surface of the metal roof body.

[0010] Preferably, the heat-reflecting and sound-absorbing composite layer includes an external heat-reflecting film, which is fixedly connected to the backlight surface of the metal roof body and is used to reflect the heat radiation generated by sunlight to the light-facing surface; the outer side of the heat-reflecting film is compounded with a sound-absorbing layer to reduce the noise generated by external force impacting the metal roof body.

[0011] Preferably, the outer side of the sound absorbing layer is compounded with an inner reflective film.

[0012] Preferably, the outer surface of the sound-absorbing layer is wrapped or both the upper and lower surfaces are compounded with a heat-reflecting film to form a heat-reflecting noise-reducing integrated structure; one side of the heat-reflecting noise-reducing integrated structure is compounded on the backlight surface of the metal roof, the heat-reflecting film on the side that is in contact with the backlight surface of the metal roof is the outer heat-reflecting film, and the heat-reflecting film on the opposite side is the inner heat-reflecting film.

[0013] Preferably, the heat reflection and noise reduction integrated structure is a coil or a plate.

[0014] Preferably, the thickness of the outer heat reflective film and / or the inner heat reflective film is 0.03-100 μm.

[0015] Preferably, the thickness of the sound absorbing layer is 0.1-100 mm.

[0016] Preferably, the inner heat reflective film of the outer heat reflective film is a metal foil or a polyester film as a base material, and a metal layer with high reflectivity is coated on the surface.

[0017] The sound-absorbing layer is one of rubber-plastic board, polyester cloth, felt cloth, geotextile, melamine sound-absorbing cotton layer, rock wool sound-absorbing layer, pearl cotton layer, glass wool sound-absorbing layer and polyurethane board.

[0018] A metal roof comprises a plurality of roof panels spliced ​​in sequence, characterized in that the roof panels are the above-mentioned metal roof panels.

[0019] The utility model has the following advantages and technical effects:

[0020] The utility model proposes a new metal roof panel with heat reflection and noise reduction functions. Its innovation lies in that a heat reflection and sound absorption composite layer is directly compounded on the backlight surface of the metal roof, realizing factory-based integrated production. This technological innovation brings many significant advantages, especially in terms of sound insulation, heat insulation, construction convenience and longevity.

[0021] 1. Excellent noise reduction effect

[0022] By compounding a heat-reflecting sound-absorbing composite layer on the backlight surface of the metal roof, the utility model effectively solves the problem of high noise in traditional metal roofs. The sound-absorbing material built into the composite layer can absorb and reduce the noise generated by the metal roof in windy and rainy weather, significantly reducing the transmission of noise into the room, and providing a quieter and more comfortable environment for residents. The integrated composite design ensures that the sound-absorbing material fits tightly with the metal roof body without gaps, further improving the noise reduction effect.

[0023] 2. Excellent thermal insulation performance

[0024] The heat-reflective sound-absorbing composite layer not only has a sound-absorbing function, but also has excellent heat-reflective performance. It can reflect the heat generated by sunlight, reduce the transfer of heat into the room, and effectively reduce the indoor temperature. Compared with the traditional technology of independently setting a heat-reflective film under the metal roof tile, the integrated composite design of the utility model avoids the problem of heat accumulation between the metal roof tile and the heat-reflective film, improves the heat reflection efficiency, and makes the heat insulation effect more significant.

[0025] 3. Convenient construction and improved efficiency

[0026] The utility model realizes factory-based integrated production. The heat-reflecting sound-absorbing composite layer and the metal roof body are composited in the factory without the need for on-site laying or pasting. This design greatly simplifies the construction process, reduces the construction difficulty, and improves the construction efficiency. At the same time, the integrated composite design also reduces the errors and uncertainties of on-site construction, ensuring the consistency of construction quality.

[0027] 4. Prolong life and reduce maintenance costs

[0028] Since the heat-reflective sound-absorbing composite layer and the metal roof body are seamlessly integrated, this design enhances the integrity and stability of the roof panel and improves its ability to resist wind pressure and deformation. At the same time, the composite layer protects the metal roof body, reduces the erosion and damage of the roof by the external environment, and extends the service life of the roof. In addition, the integrated composite design also reduces the difficulty and cost of later maintenance, bringing long-term economic benefits to the building owner.

[0029] In summary, the metal roof panel with heat reflection and noise reduction functions proposed in the utility model has significant advantages in sound insulation, heat insulation, construction convenience and longevity. This technological innovation not only improves the overall performance and user experience of metal roofs, but also makes a positive contribution to the sustainable development of the construction industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the structure of the utility model;

[0031] Figure 2 It is a schematic diagram of the structure of the sound-absorbing layer composited with the external heat-reflecting film;

[0032] Figure 3 It is a schematic diagram of the structure in which the inner and outer heat reflective films are wrapped in the sound absorbing layer;

[0033] Figure 4 It is a schematic diagram of the structure of the inner and outer heat reflective films combined with the sound absorbing layer;

[0034] Figure 5 It is a schematic diagram of the metal roof structure of the utility model.

[0035] In the figure, 1. Metal roof body; 2. Heat-reflecting and sound-absorbing composite layer; 2-1. External heat-reflecting film; 2-2. Sound-absorbing layer; 2-3. Internal reflective film; 3. Insulation layer; 4. Corrugated waterproof board; 5. Water-smoothing strip; 6. Tile hanging strip. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail in combination with the embodiments below. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.

[0037] See also Figures 1 to 4A metal roof panel with heat reflection and noise reduction functions comprises a metal roof body 1, and the backlight surface of the metal roof is compounded with a heat reflection and sound absorption composite layer 2. The heat reflection function is mainly achieved through an external heat reflection film. The external heat reflection film is a material that can efficiently reflect the thermal radiation of sunlight. When sunlight shines on the metal roof panel, the external heat reflection film can reflect most of the heat radiation back, thereby reducing the heat entering the room and achieving the effect of heat insulation and cooling. This film usually has good reflectivity and weather resistance, and can maintain stable performance for a long time under harsh climatic conditions. The noise reduction function is mainly achieved through a sound absorption layer. The sound absorption layer is a material that can absorb and reduce sound energy. In the metal roof panel, the sound absorption layer is compounded on the lower side of the external heat reflection film. When rain or other external forces impact the metal roof body, the noise generated will be absorbed and reduced by the sound absorption layer, thereby reducing the impact of noise on the indoor environment.

[0038] In the implementation of the utility model, the design of the metal roof body is highly flexible without any specific restrictions. The utility model is compatible with various types of metal roofing templates available on the market, including but not limited to the following common metal roofing panel templates:

[0039] Corrugated plate: This type of metal roof panel usually presents a continuous wave shape, which can effectively enhance the rigidity and drainage performance of the roof. It is widely used in light buildings such as industrial plants and warehouses.

[0040] Corrugated steel sheet: It is formed by mechanical pressing and has a variety of geometric patterns, such as trapezoid, sine wave, etc. It is not only beautiful, but also has good structural strength and waterproof performance. It is suitable for a variety of commercial and civil buildings.

[0041] Standing seam panels: This type of metal roof panel has a special locking structure on the edge, which is fixed by mechanical bite without the need for penetrating fasteners, thus achieving overall sealing and waterproofness of the roof. It is commonly found in large public buildings such as airports and railway stations.

[0042] For further details, please refer to Figure 2 The heat-reflecting sound-absorbing composite layer 2 includes an outer heat-reflecting film 2-1, which is fixedly connected to the backlight surface of the metal roof body and is used to reflect the heat radiation generated by sunlight to the light-facing surface; the outer side of the heat-reflecting film is compounded with a sound-absorbing layer 2-2, which is used to reduce the noise generated by external force impacting the metal roof body. When sunlight shines on the metal roof panel, the outer heat-reflecting film can reflect most of the heat radiation back, thereby reducing the heat entering the room and achieving the effect of heat insulation and cooling.

[0043] There is no fixed standard for the material between the heat reflective film and the sound absorbing layer, because their combination and specific structure may vary according to different product designs and application scenarios. However, from a general point of view, there may be the following situations between the heat reflective film and the sound absorbing layer:

[0044] 1. Direct bonding method

[0045] This is the simplest and most direct way of bonding. In this method, the external heat reflective film is directly attached to the backlit surface of the metal roof panel by adhesive. The adhesive is usually selected with good weather resistance and bonding strength to ensure a strong bond between the reflective film and the metal panel. The direct bonding method is easy to construct and relatively low in cost.

[0046] 2. Mechanical fixation

[0047] In some cases, in order to enhance the connection strength between the external heat reflective film and the metal roof panel, a mechanical fixing method can be used. This method usually involves pre-setting fixings (such as screws, buckles, etc.) on the metal plate, and then fixing the reflective film to the metal plate through these fixings. The mechanical fixing method can provide a more reliable connection effect, but the construction is relatively complicated and the cost is also high.

[0048] 3. Hot pressing composite method

[0049] Hot pressing lamination is a method of laminating the external heat reflective film with the metal roof panel under high temperature and high pressure conditions. This method heats the adhesive to melt and penetrate between the reflective film and the metal plate to form a strong bonding layer.

[0050] Further preferably, an inner reflective film 2-3 is compounded below the sound absorbing layer. The inner reflective film is located below the sound absorbing layer and together with the outer reflective film, forms a double-layer heat reflection structure. This design not only enhances the heat reflection effect, but also effectively prevents the accumulation of heat between the metal roofing tile and the heat reflection layer. The inner reflective film can reflect the heat that passes through or is not completely reflected from the outer reflective film, further reducing the transfer of heat into the room, thereby improving the overall thermal insulation performance.

[0051] In addition to serving as a heat reflection supplement to the outer reflective film, the inner reflective film also has the function of reflecting heat toward the interior. This means that in the hot summer, even if some heat penetrates the outer reflective film and the sound-absorbing layer, the inner reflective film can reflect this part of the heat back to the outside of the indoor space, or at least reduce its transmission to deeper levels indoors. This not only helps to reduce the indoor temperature, but also reduces the burden on the air conditioning system, thereby saving energy.

[0052] In summary, the internal reflective film plays a vital role in this utility model. It not only enhances the heat reflection effect and improves the thermal insulation performance, but also effectively reflects the heat back to the outside of the room, providing a more comfortable and cool indoor environment for the residents. This design not only improves the overall performance of the metal roof, but also makes a positive contribution to energy conservation and emission reduction in the construction industry.

[0053] Further preferably, the outer surface of the sound absorbing layer is wrapped (see Figure 3 ) or both the upper and lower surfaces are laminated with heat reflective film (see Figure 4 ), forming a heat-reflective noise-reducing integrated structure; one side of the heat-reflective noise-reducing integrated coil is laminated on the backlight surface of the metal roof; the heat-reflecting film on the side that is in contact with the backlight surface of the metal roof is the outer heat-reflecting film, and the heat-reflecting film on the opposite side is the inner heat-reflecting film. In the above-mentioned wrapping technical solution, the outer surface of the sound-absorbing layer is completely wrapped by the heat-reflecting film, forming a unique heat-reflective noise-reducing integrated structure, and this structure is laminated on the backlight surface of the metal roof. This design shows significant technical effects in terms of heat insulation, noise reduction and service life.

[0054] The details are as follows:

[0055] 1. Heat insulation effect

[0056] Double heat reflection mechanism: The outer heat reflection film directly faces the external environment, which can effectively reflect the heat generated by solar radiation and reduce the heat entering the metal roof structure. The inner heat reflection film serves as a supplement to further reflect the residual heat that may penetrate the sound absorption layer or the outer heat reflection film, forming a double protection and greatly improving the thermal insulation performance.

[0057] Reduce heat accumulation: The wrapping design avoids the accumulation of heat between the sound-absorbing layer and the metal roof, ensuring that the heat can be effectively reflected or dissipated, thereby reducing the indoor temperature, improving living comfort, and reducing the energy consumption of the air-conditioning system.

[0058] 2. Noise reduction effect

[0059] High-efficiency sound absorption performance: As a core component, the sound absorption layer can effectively absorb and reduce the noise generated by the metal roof in windy and rainy weather, providing a quiet environment indoors.

[0060] Auxiliary role of heat reflective film: Although the main function of the heat reflective film is heat insulation, its close fit to the surface of the sound-absorbing layer also enhances the sound insulation effect of the overall structure to a certain extent, preventing noise from penetrating through tiny gaps.

[0061] 3. Service life

[0062] Protect the sound-absorbing layer: The heat-reflective film serves as an outer layer of protection, which can effectively block the erosion of external factors such as ultraviolet rays and rain, and extend the service life of the sound-absorbing layer.

[0063] Enhanced structural stability: The wrapping design enhances the stability and durability of the overall structure, reduces material aging, cracking and other problems caused by environmental changes, and thus extends the overall service life of the metal roof.

[0064] Further preferably, the heat reflection and noise reduction integrated structure is a coil or a plate. The coil form can easily adapt to various complex metal roof panel shapes and structures, such as curved surfaces, inclined surfaces, concave and convex surfaces, etc., due to its flexibility, which brings great convenience to construction. The coil can be rolled into a compact roll for transportation and storage, saving space and reducing transportation costs. When the coil is compounded, the construction usually adopts a mechanized laying method, such as rolling, bonding, etc., which has a fast construction speed and high efficiency. There is no need for complex on-site processing, which reduces the construction difficulty and error and improves the construction quality.

[0065] The plate form usually has higher surface flatness, structural strength and rigidity, and can withstand greater loads and deformations. It is suitable for buildings with high requirements for roof load-bearing and stability, such as high-rise buildings, large public buildings, etc.

[0066] In the design of the integrated heat reflection and noise reduction structure, the thickness of key components is carefully optimized to ensure that its comprehensive performance reaches the best state. Specifically, the thickness of the outer heat reflection film, the inner heat reflection film and the sound absorption layer are selected based on extensive experimental verification and theoretical analysis, aiming to balance the requirements of heat insulation effect, noise reduction performance, structural strength and construction convenience.

[0067] Thickness selection of external heat reflective film and internal heat reflective film

[0068] As the key guarantee of thermal insulation performance, the thickness of the outer heat reflective film and the inner heat reflective film is preferably within the range of 0.03~100μm. The selection of this thickness range is based on the following considerations:

[0069] Reflection efficiency: Within this thickness range, the reflective film can efficiently reflect solar radiation heat and reduce the transfer of heat into the room, while avoiding increased costs and construction difficulties caused by excessive thickness.

[0070] Light transmittance and durability: Thinner reflective films can maintain a certain light transmittance while ensuring good reflective performance, which is beneficial to indoor lighting. At the same time, thin reflective films are more weather-resistant and not easy to age, which prolongs their service life.

[0071] Convenience of construction: Thin reflective film is easier to compound with sound-absorbing layer and other roofing materials, which improves construction efficiency and fit.

[0072] Thickness of sound absorbing layer:

[0073] As the core of noise reduction performance, the thickness of the sound-absorbing layer is preferably within the range of 0.1~100mm. The selection of this thickness range is based on the following:

[0074] Sound absorption effect: Within this thickness range, the sound absorption layer can effectively absorb and reduce the noise generated by the metal roof in windy and rainy weather, providing a quiet environment indoors. At the same time, it avoids material waste and cost increase caused by excessive thickness.

[0075] Structural strength: Appropriate thickness ensures that the sound-absorbing layer has a certain structural strength, can resist the influence of the external environment, and maintain long-term stability and durability.

[0076] Lightweight design: The thinner sound-absorbing layer helps to reduce the overall weight of the roof and the burden on the building structure, which is in line with the lightweight design trend of modern buildings.

[0077] In summary, the thickness of the outer heat reflective film, the inner heat reflective film and the sound absorbing layer in this utility model has been carefully considered to achieve the best balance in terms of heat insulation, noise reduction, structural strength and construction convenience. This design not only improves the comprehensive performance of the metal roof, but also provides strong support for the sustainable development of the construction industry.

[0078] Further preferably, the outer heat reflective film and the inner heat reflective film are made of metal foil (such as aluminum foil) or polyester film as a substrate, and a metal layer with high reflectivity (such as silver, aluminum) is coated on the surface.

[0079] Further preferably, the sound-absorbing layer is one of a rubber-plastic board, a polyester cloth, a felt cloth, a geotextile, a melamine sound-absorbing cotton layer, a rock wool sound-absorbing layer, a pearl cotton layer, a glass wool sound-absorbing layer, and a polyurethane board.

[0080] See also Figure 2A metal roof comprises sequentially spliced ​​metal plates and a supporting structure for supporting a metal roof panel, the supporting structure being installed on the roof structure layer of the building, and the roof panel adopts any of the metal roof panels described above. In this metal roof system, the main body of the supporting structure adopts the existing mature solution, mainly including the insulation layer 3, the corrugated waterproof plate 4, the water-following strip 5 and the tile hanging strip 6, and these components are connected in sequence to jointly build a stable and efficient support system. Applying the above-mentioned metal roof panel with heat reflection and noise reduction functions to the metal roof system is an innovative and efficient choice. This roof panel not only inherits the advantages of traditional metal roofs, such as light weight, high strength, corrosion resistance, etc., but also significantly improves the thermal insulation performance and noise reduction ability of the roof through its unique heat reflection and noise reduction design. Applying it to the metal roof system can not only effectively reduce the absorption of solar radiation heat and reduce the indoor temperature, but also significantly reduce the impact of external noise such as wind and rain on the indoor environment, providing residents with a more comfortable and quiet living space. Therefore, this metal roof panel with multiple functions undoubtedly brings new opportunities and challenges to the development of modern metal roof systems.

[0081] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A metal roof panel with heat reflection and noise reduction functions, comprising a metal roof body, characterized in that: A heat-reflecting sound-absorbing composite layer is compounded in the non-fastening overlap area of ​​the backlight surface of the metal roof body; the heat-reflecting sound-absorbing composite layer includes an outer heat-reflecting film, which is fixedly connected to the backlight surface of the metal roof body and is used to reflect the heat radiation generated by sunlight to the light-facing surface; a sound-absorbing layer is compounded on the outer side of the heat-reflecting film to reduce the noise generated by external force impacting the metal roof body.

2. The metal roof panel with heat reflection and noise reduction function according to claim 1, characterized in that: The outer side of the sound absorbing layer is compounded with an inner reflection film.

3. The metal roof panel with heat reflection and noise reduction functions according to claim 2, characterized in that: The outer surface of the sound-absorbing layer is wrapped or both the upper and lower surfaces are compounded with a heat-reflecting film to form a heat-reflecting noise-reducing integrated structure; one side of the heat-reflecting noise-reducing integrated structure is compounded on the backlight surface of the metal roof, the heat-reflecting film on the side that is in contact with the backlight surface of the metal roof is the outer heat-reflecting film, and the heat-reflecting film on the opposite side is the inner heat-reflecting film.

4. The metal roof panel with heat reflection and noise reduction functions according to claim 3, characterized in that: The heat reflection and noise reduction integrated structure is a coil or a plate.

5. The metal roof panel with heat reflection and noise reduction function according to claim 1 or 2, characterized in that: The thickness of the outer heat reflection film and / or the inner heat reflection film is 0.03-100 μm.

6. The metal roof panel with heat reflection and noise reduction functions according to claim 1, characterized in that: The thickness of the sound-absorbing layer is 0.1~100mm.

7. The metal roof panel with heat reflection and noise reduction functions according to claim 1 or 2, characterized in that: The outer heat reflective film or the inner heat reflective film is a metal foil or a polyester film as a base material, and a metal layer with high reflectivity is coated on the surface.

8. The metal roof panel with heat reflection and noise reduction functions according to claim 1, characterized in that: The sound-absorbing layer is one of rubber-plastic board, polyester cloth, felt cloth, geotextile, melamine sound-absorbing cotton layer, rock wool sound-absorbing layer, pearl cotton layer, glass wool sound-absorbing layer and polyurethane board.

9. A metal roof, comprising a plurality of roof panels spliced ​​in sequence, characterized in that: The roof panel is a metal roof panel as described in any one of claims 1 to 8.

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