Coated conjunctival sponge

Abstract

The utility model belongs to sound insulation and noise reduction technical field relates to a kind of coating film of sponge, including sponge body, the sponge body includes body layer, and the body layer at least one surface is equipped with the coating film of integral connection, the coating film of porous and irregular air hole is scattered, and the coating film is formed by body layer surface rolling glue, after drying, solidification forms.The utility model structure is reasonable and ingenious, and after the formation of glue film, surface is partially covered, porous and irregular air hole.The coating film is not film, but a kind of glue film.After temperature heating and baking, it is solidified into a kind of film by the liquid drying of glue.Significantly enhance sound-absorbing effect, and the practical effect of noise reduction coefficient is greatly improved in each noise frequency band.

Description

Technical Field

[0001] This utility model belongs to the field of sound insulation and noise reduction technology, and relates to a coated film sponge. Background Technology

[0002] Most sound-absorbing materials are made of sponge. Sound-absorbing sponges are mainly used in industries such as compressors and textile machinery to absorb sound and reduce vibration. Their sound absorption principle mainly utilizes the numerous pores within the sponge to absorb sound waves that enter, thereby weakening the intensity of the sound waves and achieving a noise reduction effect.

[0003] Chinese patent ZL9825126 discloses a structure that forms a sound-absorbing sponge by coating a thin film onto the surface of the sponge to create a skin. Chinese patent ZL2015202895618 discloses a fire-resistant and oil-resistant sponge sound-absorbing board, which consists of a fiberglass cloth on the upper surface of the sponge, aluminum foil bonded to the fiberglass cloth, a synthetic fiber cloth on the lower surface, and an adhesive layer on the lower surface of the synthetic fiber cloth. However, these two structures of sound-absorbing sponges still have some problems in practical applications. The main issue is that by adding an additional film layer to the sponge surface, the sponge becomes a physically layered structure, which can cause wrinkling on the sponge surface during actual use. Furthermore, because the film covers the sponge surface, sound waves cannot effectively penetrate the sponge's interior, resulting in poor sound absorption in existing sponge structures. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides a coated film sponge. The coating film on the surface of the sponge is integrally connected to the sponge body, preventing wrinkles during use. Furthermore, the pores on the surface of the coating film effectively allow sound waves to pass through, achieving effective sound absorption.

[0005] According to the technical solution of this utility model: a coated film sponge, characterized in that: it includes a sponge body, the sponge body includes a body layer, at least one surface of the body layer is provided with an integrally connected coated film, the coated film is distributed with porous and irregular air pores.

[0006] As a further improvement of this utility model, the coating film is formed by rolling adhesive onto the surface of the body layer, drying, and then curing.

[0007] As a further improvement of this utility model, a transition layer is provided below the coating film, the coating film and the transition layer are integrally connected, and the transition layer is integrally connected to the body layer.

[0008] As a further improvement of this utility model, the density of the transition layer is greater than the density of the body layer.

[0009] As a further improvement of this utility model, an adhesive is provided on the surface of the body layer opposite to the coating film.

[0010] As a further improvement of this utility model, the adhesive is made of double-sided adhesive.

[0011] The technical advantages of this invention are as follows: The invention features a rational and ingenious structure. After the adhesive film is formed, the surface is partially covered, with numerous and irregularly shaped pores for ventilation. The coating film is not a thin film, but rather an adhesive film. After being heated and baked, the liquid adhesive is dried and cured into a film. This significantly enhances the sound absorption effect, substantially improving the noise reduction coefficient across various noise frequency bands. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0013] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0014] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. The described embodiments are merely some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0015] Figure 1 The structure includes a sponge body 10, a coating film 11, a transition layer 12, and a body layer 13.

[0016] like Figure 1 As shown, this utility model is a coated film sponge, including a sponge body 10, which includes a body layer 13. At least one surface of the body layer 13 is provided with an integrally connected coated film 11. The coated film 11 is distributed with porous and irregularly arranged air pores. In use, one surface of the coated film 11 faces the noise side. Because the coated film 11 is integrally connected to the body layer 13 and has air pores distributed on it, the numerous air pores are irregularly arranged on the coated film 11, which can better transmit noise. The transmitted noise is absorbed by the gaps in the sponge body 10, thereby reducing the noise.

[0017] The coating film 11 in this application is formed by rolling adhesive onto the surface of the body layer 13, drying, and then curing. During the production process, adhesive is rolled onto the body layer 13, then heated and dried, and after curing, a film is formed, which is the coating film 11.

[0018] To further enhance the noise reduction effect, a transition layer 12 is provided below the coating membrane 11. The coating membrane 11 and the transition layer 12 are integrally connected, and the transition layer 12 is integrally connected to the main body layer 13.

[0019] Understandably, the density of the transition layer 12 is greater than that of the main body layer 13. Because the transition layer 12 is more compact than the main body layer 13, it can effectively improve the noise reduction effect.

[0020] Furthermore, to facilitate installation and fixation during use, an adhesive element is provided on the surface of the body layer 13 opposite to the coating film 11. The adhesive element is used to bond and fix the product to the desired installation location, thus achieving fixation.

[0021] In practical production, double-sided adhesive is used for bonding parts. Double-sided adhesive is convenient to use and provides reliable and strong bonding.

[0022] This invention achieves significant sound absorption for noise across all frequency bands by applying a coating membrane 11 to the surface of the sponge, resulting in substantial noise reduction. The coating membrane 11 not only provides excellent sound absorption but also exhibits good resilience; for example, if the sponge is crumpled and then released, the coating membrane 11 will not wrinkle after the sponge body 10 recovers its shape. Furthermore, the coating membrane 11 effectively enhances the overall tensile strength of the sponge body 10.

[0023] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although this utility model has been described in detail with reference to examples, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A coated film sponge, characterized in that: The sponge body (10) includes a body layer (13), and at least one surface of the body layer (13) is provided with an integrally connected coating film (11), which has porous and irregular air pores.

2. The coated film sponge as described in claim 1, characterized in that: The coating film (11) is formed by rolling adhesive onto the surface of the body layer (13), drying, and then curing.

3. The coated film sponge as described in claim 1, characterized in that: A transition layer (12) is provided below the coating film (11), the coating film (11) and the transition layer (12) are integrally connected, and the transition layer (12) and the main body layer (13) are integrally connected.

4. The coated film sponge as described in claim 3, characterized in that: The density of the transition layer (12) is greater than that of the body layer (13).

5. The coated film sponge as described in claim 1, characterized in that: An adhesive is provided on the surface opposite to the body layer (13) and the coating film (11).

6. The coated film sponge as described in claim 5, characterized in that: The adhesive is made of double-sided adhesive.

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