Calcined mica tape

Abstract

The utility model discloses a calcined mica tape, which comprises a mica tape body, calcined mica paper is arranged on the inner side of the mica tape body, a permeable layer is arranged on the outer layer of the calcined mica paper, a glass fiber layer and a carborundum layer are respectively arranged on the outer layer of the permeable layer, and the glass fiber layer and the carborundum layer are mutually bonded in a wave-shaped structure. A non-woven fabric layer is arranged on the outer layer of the carborundum layer, a hot melt adhesive layer is arranged on the outer layer of the non-woven fabric layer, and release paper is arranged on the outer layer of the hot melt adhesive layer; through the permeable layer arranged on the outer layer of the calcined mica paper, a permeable area can be actively arranged on the outer side of the calcined mica paper, glue can be conveniently supplemented to the surface of the mica tape, and the glass fiber layer and the calcined mica paper can be better and tightly connected together in cooperation with the wave-shaped composite structure of the glass fiber layer and the carborundum layer. And the bonding effect of the mica tape composite layer is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of mica tapes, in particular to a calcined mica tape. Background Art

[0002] Mica tape, also known as fire-resistant mica tape, is made by mica tape machine. It is a fire-resistant insulating material. According to the use, it can be divided into: mica tape for motors, mica tape for cables, and according to the structure, it can be divided into: double-sided tape, single-sided tape, three-in-one tape, double-film tape, single-film tape, etc. According to mica, it can be divided into: synthetic mica tape, phlogopite mica tape, and white mica tape. Mica tape for fire-resistant safety cables is a high-performance mica insulation product with excellent high temperature resistance and combustion resistance.

[0003] The authorized patent number CN212335099U discloses a mica tape with toughness. The device is mainly designed with grid protrusions on both sides of the mica paper and on the surface of the glass fiber layer bonded to the mica paper. By designing the grid protrusions, the mica paper and the glass fiber layer are bonded more tightly, and the toughness of the mica paper and the glass fiber layer is guaranteed, thereby improving the toughness of the mica tape body. In addition, the other side of the glass fiber layer is designed with a wavy structure, and the quartz fiber layer and the non-woven fabric layer are bonded to the glass fiber layer. The same wavy structure is designed on the side surface. The bonding contact surface between the quartz fiber layer and the non-woven fabric layer and the glass fiber layer is increased, ensuring a stronger bond and further ensuring the overall toughness. However, when the device is actually used, the following defects still exist:

[0004] The above patent mainly increases the bonding contact area between the quartz fiber layer and the non-woven fabric layer and the glass fiber layer to ensure a stronger bonding and increase the toughness of the mica tape. However, during the actual production of the mica tape, powder is easily lost on the surface of the mica paper, which leads to stratification of the composite structure of the mica paper, affecting the quality of the mica tape. In addition, it is difficult for the composite layer to bond evenly with the mica tape, resulting in filamentation and anti-stickiness of the mica tape, further affecting the high temperature resistance of the mica tape. Utility Model Content

[0005] The purpose of the utility model is to provide a calcined mica tape to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a calcined mica tape, comprising a mica tape body, the inner side of the mica tape body contains calcined mica paper, the outer layer of the calcined mica paper is provided with a permeable layer, the outer layers of the permeable layer are respectively provided with a glass fiber layer and a corundum layer, and the glass fiber layer and the corundum layer are bonded to each other in a wavy structure, the outer layer of the corundum layer is provided with a non-woven fabric layer, and the outer layer of the non-woven fabric layer is provided with a hot-melt adhesive layer, and the outer layer of the hot-melt adhesive layer is provided with release paper.

[0007] Preferably, the glass fiber layer and the corundum layer are interlaced and laminated in a wavy structure, and the glass fiber layer and the corundum layer are wrapped in the outer layer of the permeation layer and the calcined mica paper to improve the tightness of the contact of the composite layer structure and enhance the comprehensive toughness of the mica tape.

[0008] Preferably, non-woven fiber layers of different thicknesses are staggered on the inner side of the non-woven fabric layer, and the non-woven fiber layer is wrapped on the outer layer of the corundum layer. The staggered arrangement of woven fiber layers of different thicknesses facilitates local distribution of heat, and the inner layer structure is utilized for efficient heat resistance and flame retardancy.

[0009] Preferably, the permeable layer is arranged between the calcined mica paper and the glass fiber layer, and the glass fiber layer is glued to the calcined mica paper by the penetration of the permeable layer. The glass fiber layer and the calcined mica paper are bonded to each other, and the glue filling structure in the permeable layer is utilized to increase the uniformity of bonding of the glass fiber layer.

[0010] Preferably, curing glue is filled between the permeable layer and the glass fiber layer, and the curing glue composites the calcined mica paper and the glass fiber layer through the permeable layer, so as to further enhance the toughness and strength of the mica tape inner layer structure combination by filling with curing glue.

[0011] The calcined mica tape proposed by the utility model has at least the following beneficial effects:

[0012] By setting a permeable layer on the outer layer of the calcined mica paper, a permeable area can be actively set on the outer side of the calcined mica paper, which is convenient for gluing the surface of the mica tape. In combination with the wavy composite structure of the glass fiber layer and the corundum layer, the glass fiber layer and the calcined mica paper are better and more tightly connected together, thereby enhancing the bonding effect of the composite layer of the mica tape. In addition, the composite composition of the glass fiber layer, the corundum layer and the outer layer of the non-woven fabric layer is utilized to greatly improve the comprehensive strength and performance of the mica tape, thereby improving the flame retardancy and tear resistance of the calcined mica tape. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional diagram of the utility model;

[0014] Figure 2 It is a partial cross-sectional structural schematic diagram of the utility model;

[0015] Figure 3 It is a schematic diagram of a partial top view and cross-sectional structure of the glass fiber layer of the utility model.

[0016] In the figure: 1. Mica tape; 2. Calcined mica paper; 3. Permeation layer; 4. Glass fiber layer; 5. Corundum layer; 6. Non-woven fabric layer; 7. Hot melt adhesive layer; 8. Release paper. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1-3 The utility model provides an embodiment: a calcined mica tape, comprising a mica tape body 1, the inner side of the mica tape body 1 contains a calcined mica paper 2, the outer layer of the calcined mica paper 2 is provided with a permeable layer 3, the permeable layer 3 is arranged between the calcined mica paper 2 and the glass fiber layer 4, the permeable layer 3 and the glass fiber layer 4 are filled with a curing glue, and the curing glue composites the calcined mica paper 2 and the glass fiber layer 4 through the permeable layer 3, so as to facilitate the use of the curing glue filling to further enhance the toughness and strength of the inner layer structure combination of the mica tape;

[0019] The glass fiber layer 4 is filled with glue on the calcined mica paper 2 through the penetration of the penetration layer 3. The glass fiber layer 4 and the calcined mica paper 2 are bonded to each other. The bonding uniformity of the glass fiber layer 4 is increased by utilizing the filling structure of the penetration layer 3. The outer layer of the penetration layer 3 is provided with a glass fiber layer 4 and a corundum layer 5, respectively. The glass fiber layer 4 and the corundum layer 5 are bonded to each other in a wavy structure. The glass fiber layer 4 and the corundum layer 5 are interlaced and laminated in a wavy structure. The glass fiber layer 4 and the corundum layer 5 are wrapped in the outer layer of the penetration layer 3 and the calcined mica paper 2, thereby improving the tightness of the contact of the composite layer structure and strengthening the comprehensive toughness of the mica tape.

[0020] The outer layer of the corundum layer 5 is provided with a non-woven fabric layer 6, and the outer layer of the non-woven fabric layer 6 is provided with a hot-melt adhesive layer 7. The inner side of the non-woven fabric layer 6 is staggered with non-woven fabric fiber layers of different thicknesses, and the non-woven fabric fiber layer is wrapped around the outer layer of the corundum layer 5. The staggered arrangement of woven fabric fiber layers of different thicknesses facilitates local distribution of heat, and the inner layer structure is utilized for high-efficiency heat resistance and flame retardancy. The outer layer of the hot-melt adhesive layer 7 is provided with a release paper 8.

[0021] Working Principle: In this calcined mica tape;

[0022] The outer layer of the mica paper is provided with a permeable layer 3, and the permeable layer 3 is used for glue filling so that the surface of the mica tape is evenly glued, and then the glass fiber layer 4 and the corundum layer 5 composed of the wavy structure are fully bonded to the permeable layer 3, and are sent into an oven for baking after the glue filling to form a calcined mica tape, thereby enhancing the bonding strength of the composite structure of the outer layer of the mica tape. At the same time, a non-woven fabric layer 6, a hot-melt adhesive layer 7 and a release paper 8 are provided on the outer layer of the corundum layer 5, and the non-woven fabric layer 6 is used to further wrap the mica paper composite structure to enhance the comprehensive strength and toughness of the composite layer, and the composite composition of the glass fiber layer 4 and the corundum layer 5 is used to improve the flame retardant and high temperature resistance of the inner layer structure, thereby greatly enhancing the quality of the calcined mica paper.

[0023] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0024] In the description of the present invention, unless otherwise specified, "multiple" means two or more than two; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms connected and connected should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A calcined mica tape, comprising a mica tape body (1), characterized in that: The inner side of the mica tape (1) contains calcined mica paper (2); the outer layer of the calcined mica paper (2) is provided with a permeable layer (3); the outer layer of the permeable layer (3) is provided with a glass fiber layer (4) and a corundum layer (5), respectively; the glass fiber layer (4) and the corundum layer (5) are bonded to each other in a wavy structure; the outer layer of the corundum layer (5) is provided with a non-woven fabric layer (6); the outer layer of the non-woven fabric layer (6) is provided with a hot melt adhesive layer (7); and the outer layer of the hot melt adhesive layer (7) is provided with a release paper (8).

2. The calcined mica tape according to claim 1, characterized in that: The glass fiber layer (4) and the corundum layer (5) are interlaced and laminated in a wavy structure, and the glass fiber layer (4) and the corundum layer (5) are wrapped in the outer layer of the permeable layer (3) and the calcined mica paper (2).

3. The calcined mica tape according to claim 1, characterized in that: Non-woven fabric layers of different thicknesses are arranged in an alternating manner on the inner side of the non-woven fabric layer (6), and the non-woven fabric fiber layers are wrapped around the outer layer of the corundum layer (5).

4. The calcined mica tape according to claim 1, characterized in that: The permeable layer (3) is arranged between the calcined mica paper (2) and the glass fiber layer (4); the glass fiber layer (4) is used to fill the calcined mica paper (2) with glue through the permeable layer (3); and the glass fiber layer (4) and the calcined mica paper (2) are bonded to each other.

5. The calcined mica tape according to claim 4, characterized in that: Curing glue is filled between the permeable layer (3) and the glass fiber layer (4), and the curing glue passes through the permeable layer (3) to composite and splice the calcined mica paper (2) and the glass fiber layer (4).

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