SK6485Y1 - Sound absorbing and soundproof recycled plastics acoustic panels - Google Patents

Abstract

Sound-absorbing acoustic panels consist of a supporting frame comprising frame profile (1) from recycled plastics, lateral wall (2) from profiles from recycled plastics and the rear wall (8) with tongue-and-groove profiles from recycled plastics. Panel is reinforced with a beam (7) and the L metal profile (6) and is filled with asphalt strip (10), acoustic filler (9), glass- fabric mesh (11) and plastic mesh (3).

Description

Technical field

The subject of the utility model - sound absorbing and airborne soundproof panels made of recycled plastics concerns the environmental field, the protection of residential areas, the environment from excessive noise from roads, roads, railways and industrial buildings.

BACKGROUND OF THE INVENTION

Soundproof panels, including those based on recycled plastics, are used to protect the environment, residential areas from excessive noise. They are of different construction and are made of different materials. In addition to recycled plastics, it is for example concrete, wood, aluminum, a mixture of concrete with wood fibers and the like. Although these soundproofing panels currently have the desired and satisfactory sound insulation value of category B3, they no longer meet the required value of high sound absorption category A4. Noise panels made from recycled plastics so far are only category A2. Their use is therefore partially limited, respectively. are used with various exceptions.

The essence of the technical solution

The disadvantages of the existing solutions of noise barriers from the viewpoint of sound insulation are eliminated by a new type of noise bar panels from recycled plastics. The new panel solution has a significantly improved and stronger frame construction compared to the previous solution of soundproof panels made of recycled plastics, which consists of a new type of basic frame profile allowing to reinforce the frame with a prism made of recycled plastics and metal “L”. overlapping the front wall and especially the new construction of a multilayer sound absorber. This makes it possible to produce noise barriers in a wide range of sound absorption categories of -1, i. from category A2 to category A4. Another advantage of the new solution is that the supporting frame can be used for all categories of sound absorption, with only the thickness and composition of the layers of sound absorption absorber changing. The new solution also brings further improvements - by modifying the rear panel of the panel, the value of airborne sound insulation is also significantly increased. The current solution reached practically only the limit value of category B3 - 24 dB, the new solution already reaches the value of up to 37 dB. The new design of the base frame profile allows the insertion of the rear wall profiles into the panel frame, which significantly increases its strength and stiffness.

BRIEF DESCRIPTION OF THE DRAWINGS

The drawing shows the subject of the utility model - the sound-absorbing and sound-proof soundproof panel made of recycled plastics in figure no. 1 in a front view and FIG. 2 in section.

EXAMPLES

The sound-absorbing and air-soundproofed recycled plastic acoustic panel shown in the figure is formed by the recycled plastic frame profile 1 which forms the top and bottom of the frame, the side wall 2 of the frame forms the recycled plastic profile. The panel frame is reinforced at the top and bottom with a reinforced prism 7 made of recycled plastics and a metal "L" profile 6. The rear wall 8 of the frame is formed by recycled plastic tongues embedded in the panel frame, not only increasing panel strength but improving and airborne sound insulation. These individual structural elements of the acoustic panel are connected to each other by screws. The sound absorbing absorber consists of several layers of asphalt strip 10, an acoustic filler 9 consisting of 1-3 layers of sound absorbing material (according to the sound absorption category), a covering glass-textile mesh 11 and a top plastic mesh 3. The front part, the front wall 4 of the panel profiles from recycled plastics respectively. 5. The composition and thickness of the acoustic filler depends on the sound absorption category and is made of recycled polyurethane material, e.g. type EKOMOLITAN, resp. mineral fibers, e.g. type NOBASIL. For category A2 the thickness of the acoustic layer is 50 mm, for A3 90 mm and for A4 140 mm heterogeneous mixed plastic waste with a minimum proportion of polyolefins of 60% by weight. Noise barriers are produced most often in a maximum length of 4000 mm, with a height of 1000 mm.

SK 6485 Υ1

Industrial usability

Sound absorbing and airborne soundproof panels made of recycled plastics are useful in road construction for building noise barriers and barriers along roads as a solution to protect the environment from excessive road noise. Noise protection panels are also useful for protection against excessive noise from industrial activities.

Claims (1)

PROTECTION REQUIREMENTS Sound absorbing and airborne soundproof panel made of recycled plastics, characterized in that the supporting frame is formed by a frame profile (1) made of recycled plastics, a side wall (2) made of recycled plastics, a back wall (8) with tongue-groove profiles of recycled plastics, the panel is reinforced with a prism (7) of recycled plastics and a metal L-profile (6) and is filled with an asphalt strip (10), acoustic panel (9) consisting of 1 to 3 layers of acoustic sound absorbing material, glass-textile mesh 11) and a plastic mesh (3) and terminated by a front wall (4) of the panel formed from profiles of recycled plastics, respectively. metal curry net (5).