RU150051U1 - SOUND INSULATING ROLL MATERIAL - Google Patents

Abstract

The utility model relates to construction and can be used to reduce noise in residential and industrial premises. The technical task to be solved is to increase the sound insulation of rolled material from rigid non-plastic materials by reducing the rigidity of the entire structure as a whole. Sound-insulating roll material is made of multilayer elastic material reinforced with sound-insulating material, the density of which and sound insulation exceed the elastic material, while the reinforced sound-insulating material is made in the form of plates located relative to each other with a gap providing the possibility of bending when folding into a roll. Sound insulating material plates are made of metal, ceramics, polymeric materials and composites. Roll material is easy to manufacture, has small dimensions and cheaper. 1 s.p. f-ly, 4 z.p. f-ly, 7 ill.

Description

The utility model relates to construction and can be used to reduce noise in residential and industrial premises.

Known soundproofing and heat insulating sandwich panel containing two plates and a layer of porous material between them, where the plates are made of wood fiber material, and the porous material is made of polyethylene foam (RF patent No. 28501, CL. E04B 1/84. Published March 27, 2003) . This panel has a relatively large thickness with a small surface mass, which reduces its effectiveness as a soundproofing material.

A soundproofing element is known, including two plastic films located one above the other, one is made in the form of a cellular structure with cup-shaped recesses, and the other is a coverslip made flat and hermetically covers the cavity of the recesses (RF patent No. 1079183, CL. E04B 1/84, published 07.03. 84. Bull. No. 9). The cellular structure consists of three groups having a different elongated outline of the bases of the cup-shaped elements. In this case, the bases of the recesses are provided with separate elements (balls) of metal or glass.

The soundproofing element is difficult to manufacture due to the tightness of the cavities of the recesses and the complex cellular structure of the film. The small surface mass of the insulating element reduces sound insulation.

The closest in technical solution and the achieved result is a roll soundproofing material made in the form of a multilayer structure consisting of layers of foamed polyethylene and aluminum foil, where a plastic layer of material is located between them with a coefficient of energy loss of acoustic vibrations and a density exceeding aluminum foil by the same parameters (RF patent No. 2170310, CL. E04B 1/82, published July 10, 2001). The plastic layer can be made of a single-row layer of metal balls, sawdust, lead and copper sheets, or composite materials. This material is difficult to manufacture due to the need for uniform placement and fastening of metal balls and sawdust between the layers of foamed polyethylene. Making the balls themselves increases the cost of the soundproofing material itself. And the use of lead sheets and sheets of annealed copper also increases the cost of soundproofing material. In addition, the use of metal balls and sawdust reduces the surface density of the material, which affects sound insulation.

This soundproofing material does not provide the possibility of using hard materials, for example, steel sheets due to the reduction of bending stiffness and the occurrence of resonance matching reduces sound insulation.

The technical task to be solved is to increase the sound insulation of rolled material from rigid non-plastic materials by reducing the rigidity of the entire material structure as a whole.

The technical problem to be solved in a sound insulating roll material is achieved by the fact that it is made of multilayer elastic material reinforced with a sound insulating material, the density of which and sound insulation exceed the elastic material made in the form of plates arranged relative to each other with a gap providing the possibility of bending when folding into a roll. The plates in the roll soundproofing material are made of metal, ceramics, polymers and composites.

In FIG. 1 shows a general view of a sound insulating roll material; in FIG. 2 is a section Α-A in FIG. one; in FIG. 3 - arrangement of plates using two self-adhesive films; in FIG. 4 - glue connection of the plates with the film; in FIG. 5, 6 applications of sound insulating roll material. In FIG. 7 shows the experimental data on the sound insulation of coiled material with plates of steel 20 with a size of (40 × 40 × 2) mm with a gap between them of 1.5 mm.

In an example of a specific implementation, the soundproofing roll material is made of multilayer elastic material (films, fabrics, and others) 1, 2 reinforced with soundproofing material made in the form of plates 3 located relative to each other with a gap a, which allows bending when folded into a roll (Fig. 1 , 2, 3). The density of the plates 3 and the sound insulation exceed the density and sound insulation of the elastic film materials 1, 2, which can be polyethylene, polyamide, dacron and others. The connection of the films 1, 2 with each other for mounting the plates 3 is carried out by welding 4 (Fig. 2), using self-adhesive films (Fig. 3) and adhesives 5 (Fig. 4).

An example of a specific implementation of a sound insulating roll material is also presented in FIG. 5 and 6, which shows its use in typical sound insulation schemes. In FIG. 5 soundproofing roll material 6 is located between the layers of drywall 7 and the frame of the cladding 8 filled with mineral wool 9, which is attached to the brick wall 10 (1/2 brick). In FIG. 6 roll material is located between the layers of drywall. This arrangement of soundproofing material provides a significant increase in sound insulation.

Sound insulation measurements shown in FIG. 7 were carried out according to GOST 27296-87. (Noise protection in construction. Sound insulation of building envelopes. Measurement methods). If the sound insulation of the wall in 1/2 brick is 40 dB, then with the use of roll material it is already 50 dB. The change in sound insulation from frequency shows a close linear relationship, and the coincidence resonance reducing sound insulation is not fixed in the audible frequency range.

Sound-insulating roll material improves sound insulation due to high surface density and elimination of resonance coincidence in the audible frequency range by using hard plates with a small area. Due to the gaps between the rigid plates, this material does not increase the rigidity of the sound insulating structure as a whole and thereby does not lead to a shift of the coincidence resonance into the audible frequency range. Otherwise, when using a rigid sheet of large sizes, for example, steel, it would significantly increase the stiffness of the soundproof structure as a whole, which would lead to a shift of the coincidence resonance to the audible frequency range, which would reduce the sound insulation of this structure.

In comparison with the prototype, the developed roll-over sound insulating material can be made of relatively cheap rigid high-density sheet materials, which is not in the prototype. The roll material has small dimensions, easy to manufacture, cheaper, passed production tests and gave positive results.

Claims (5)

1. Soundproofing roll material made of multilayer elastic material reinforced with soundproofing material, the density of which and sound insulation exceed the elastic material, characterized in that the reinforced soundproofing material is made in the form of plates located relative to each other with a gap that allows bending when folded into a roll . 2. Soundproofing roll material according to claim 1, characterized in that the plates of the soundproofing material are made of metal. 3. Soundproofing roll material according to claim 1, characterized in that the plates of the soundproofing material are made of ceramic. 4. Sound insulating roll material according to claim 1, characterized in that the plates of sound insulating material are made of composites. 5. Soundproofing roll material according to claim 1, characterized in that the plates of soundproofing material are made of a polymeric material.

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