CN217509121U - Hybrid construction stiffening plate - Google Patents

Abstract

The application relates to a mixed structure stiffening plate, including composite bed, adhesive linkage and top layer, top layer symmetry sets up outside two relative planes of composite bed, the adhesive linkage sets up the composite bed with it is fixed in order to be used for bonding between the top layer the composite bed with the top layer. This application sets up the top layer through the external symmetry in the composite bed for the mixed structure of whole stiffening plate can be symmetry each other, with the bulk strength that increases mixed structure's stiffening plate.

Description

Hybrid construction stiffening plate

Technical Field

The application relates to the field of circuit board manufacturing, in particular to a hybrid structure reinforcing plate.

Background

With the rapid development of the electronic industry, the Flexible Printed Circuit (FPC) is becoming more and more popular in the market. The flexible circuit board is a printed circuit board made of polyimide or polyester film as a base material. The printed circuit board has high reliability and excellent flexibility, and also has the characteristics of high wiring density, light weight, thin thickness and good bending property.

In the manufacture of flexible circuit boards, it is often necessary to add stiffening plates to provide structural support and mechanical reinforcement at strategic locations on the circuit board. The existing reinforcing plate is usually compounded by polyimide films of the same manufacturer. Polyimide films produced by manufacturers at home and abroad have large quality difference and large cost difference.

In view of the above-mentioned related technologies, there is a defect that when polyimide films produced by different manufacturers are used for compounding, due to the quality difference, the strength of a reinforcing plate formed by compounding is likely to be low.

SUMMERY OF THE UTILITY MODEL

In order to improve the strength of the composite formed stiffening plate, the present application provides a hybrid construction stiffening plate.

The application provides a mixed structure stiffening plate adopts following technical scheme:

a hybrid structure reinforcing plate comprises a composite layer, an adhesive layer and a surface layer, wherein the surface layer is symmetrically arranged outside two opposite planes of the composite layer, and the adhesive layer is arranged between the composite layer and the surface layer and used for bonding and fixing the composite layer and the surface layer.

Through adopting above-mentioned technical scheme, utilize the adhesive linkage to bond fixedly the top layer outside two planes of composite bed to form the stiffening plate. Because the two surface layers are symmetrically arranged outside two opposite planes of the composite layer, the thicknesses of the bonding layers on the two side surfaces of the composite layer are the same, and the thicknesses of the surface layers on the two side surfaces of the composite layer are the same. When the thin film composite is carried out on the composite board, a symmetrical mixed structure is finally formed, so that the reinforcing board has higher strength.

Optionally, the composite layer includes at least one embedded layer, and the bonding layer is disposed on a plane of the embedded layer close to the surface layer, so as to bond and fix the embedded layer and the surface layer.

By adopting the technical scheme, the composite layer is formed by one or more layers, and the reinforcing plate with the multilayer structure can be produced according to the use requirement in the production process of the reinforcing plate.

Optionally, when the embedded layers have at least two layers, the bonding layer is further disposed between two adjacent embedded layers for bonding and fixing the two adjacent embedded layers.

Through adopting above-mentioned technical scheme, embedded layer bonds fixedly at two-layer and when more than two-layer, through the adhesive linkage to the embedded layer to make the stable in structure of whole composite bed.

Optionally, when the embedded layer has at least two layers, a connecting layer is arranged between two adjacent embedded layers, and the bonding layer is further arranged between the connecting layer and the embedded layers.

Through adopting above-mentioned technical scheme, whole stiffening plate can be through the stratum architecture of articulamentum, embedded layer and the three different materials in top layer compound, can use multiple panel for the production cost is easier to the accuse.

Optionally, the surface layer, the embedded layer, and the connection layer are all polyimide films.

Optionally, the thickness of the surface layer is 12.5-75 μm.

Optionally, the adhesive layer is a polyacrylate adhesive or an epoxy adhesive, and the thickness of the adhesive layer is 7-50 μm.

By adopting the technical scheme, the polyacrylate adhesive or the epoxy adhesive has the characteristics of high curing speed and strong aging resistance.

Optionally, the distance between two planes of the two surface layers far away from each other is 75-300 μm.

In summary, the present application includes at least one of the following beneficial technical effects:

1. in the composite production of the reinforcing plate, the surface layers are symmetrically arranged outside the composite layer, so that the mixed structures of the whole reinforcing plate can be mutually symmetrical to increase the strength of the mixed structures;

2. the reinforcing plate can be formed by compounding two or more than two laminated plates with different thicknesses, so that the range of compounding raw materials is increased, and the production cost is controllable;

3. the bonding curing speed is fast in the stiffening plate production process, and has strong ageing resistance's characteristics.

Drawings

Fig. 1 is an overall configuration diagram of a reinforcing plate of a hybrid structure according to embodiment 1 of the present application.

Fig. 2 is an overall structural view of a hybrid structure reinforcing plate according to embodiment 2 of the present application.

Fig. 3 is an overall configuration diagram of a reinforcing plate of a hybrid structure according to embodiment 3 of the present application.

Description of reference numerals: 1. compounding layers; 11. an embedded layer; 12. a connecting layer; 2. an adhesive layer; 3. a surface layer.

Detailed Description

The present application is described in further detail below with reference to the accompanying drawings.

The embodiment of the application discloses mixed structure stiffening plate.

Example 1

Referring to fig. 1, the hybrid structure reinforcing panel includes a composite layer 1, an adhesive layer 2, and a skin layer 3. Wherein, adhesive linkage 2 sets up on two relative planes of composite bed 1, and top layer 3 sets up outside two relative planes of composite bed 1, and carries out the bonding through adhesive linkage 2 and composite bed 1 and fix. The two skin layers 3 are arranged symmetrically with respect to the composite layer 1, i.e. the two skin layers 3 have the same thickness and the two adhesive layers 2 have the same thickness. Therefore, when two different materials are used to form the stiffening plate, the symmetrically arranged surface layers 3 have a relatively stable structure, and after being bonded and fixed with the composite layer 1, the stiffening plate formed by composite has higher structural strength.

In this embodiment, the surface layer 3 and the composite layer 1 are both polyimide films, and the two surface layers 3 are polyimide films produced by the same manufacturer. The thickness of the surface layers 3 is 12.5-75 μm, and the thickness of the reinforcing plate formed by final compounding, namely the distance between two planes of the two surface layers 3 which are far away from each other, is 75-300 μm.

In the embodiment, the adhesive layer 2 is a polyacrylate adhesive, and the thickness of the adhesive layer 2 is 7-50 μm. In other embodiments, the adhesive layer 2 may also be an epoxy adhesive.

The implementation principle of the embodiment of the application is as follows: when polyimide films produced by two manufacturers are used for composite manufacturing, the quality of the polyimide films of different manufacturers is different, so that the formed reinforcing plate may have a problem of low structural strength. And the top layer 3 that the symmetry set up, the thickness that can make two top layers 3 the same and two adhesive linkage 2 is also the same, after the compound stiffening plate that forms, the whole higher structural stability that has of stiffening plate to solve the lower defect of original stiffening plate structural strength.

Example 2

Referring to fig. 1 and 2, the present embodiment is different from embodiment 1 in that the composite layer 1 includes at least one embedded layer 11. When the composite layer 1 is of a one-layer embedded layer 11 structure, the surface layer 3 is directly bonded and fixed on two opposite planes of the embedded layer 11 through the bonding layer 2, so that the surface layer 3 and the embedded layer 11 are bonded and fixed with each other.

When the embedded layers 11 are at least two layers, the bonding layer 2 is arranged between two adjacent embedded layers 11 while the bonding layer 2 bonds the embedded layers 11 and the surface layer 3. Two adjacent embedded layers 11 are fixed by bonding through the bonding layer 2.

In addition, when the structure of at least two layer insert layers 11 is adopted, the structure of the whole composite layer 1 is also a symmetrical structure. That is, the embedded layer 11 or the embedded layer 11 and the adhesive layer 2 are both symmetrically disposed with respect to the center position of the composite layer 1.

Example 3

Referring to fig. 2 and 3, the present embodiment is different from embodiment 2 in that a connection layer 12 is further provided between two adjacent embedded layers 11 when the embedded layers 11 have at least two layers. The adhesive layer 2 is also provided between the tie layer 12 and the embedded layer 11 to adhesively fix the tie layer 12 and the embedded layer 11. In the present embodiment, the surface layer 3, the embedded layer 11, and the connection layer 12 are all polyimide films. Therefore, when the reinforcing plate is finally formed, polyimide films produced by three different manufacturers can be selected as the composite material. Under the condition of meeting the structural strength, the production material selection is further increased, and the production cost is reduced. The problems of high cost and low strength when polyimide film materials of the same manufacturer are adopted for production are solved.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: equivalent changes in structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. A hybrid construction stiffening plate which characterized in that: the composite material comprises a composite layer (1), an adhesive layer (2) and a surface layer (3), wherein the surface layer (3) is symmetrically arranged outside two opposite planes of the composite layer (1), and the adhesive layer (2) is arranged between the composite layer (1) and the surface layer (3) and is used for bonding and fixing the composite layer (1) and the surface layer (3).

2. The hybrid structural stiffener of claim 1, wherein: the composite layer (1) comprises at least one embedded layer (11), and the bonding layer (2) is arranged on the plane of the embedded layer (11) close to the surface layer (3) and used for bonding and fixing the embedded layer (11) and the surface layer (3).

3. The hybrid structural stiffener of claim 2, wherein: when the embedded layers (11) are at least two layers, the bonding layer (2) is also arranged between two adjacent embedded layers (11) and used for bonding and fixing the two adjacent embedded layers (11).

4. The hybrid structural stiffener of claim 2, wherein: when the embedded layers (11) are at least two layers, a connecting layer (12) is arranged between every two adjacent embedded layers (11), and the bonding layer (2) is further arranged between the connecting layer (12) and the embedded layers (11).

5. The hybrid structural stiffener of claim 4, wherein: the surface layer (3), the embedded layer (11) and the connecting layer (12) are all polyimide films.

6. The hybrid structural stiffener of claim 1, wherein: the thickness of the surface layer (3) is 12.5-75 mu m.

7. The hybrid structural stiffener of claim 1, wherein: the adhesive layer (2) is a polyacrylate adhesive or an epoxy adhesive, and the thickness of the adhesive layer (2) is 7-50 mu m.

8. The hybrid structural stiffener of claim 1, wherein: the distance between two planes of the two surface layers (3) which are far away from each other is 75-300 mu m.

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