CN111278241A

CN111278241A - Composite film for voltage machine and use method thereof

Info

Publication number: CN111278241A
Application number: CN202010105291.6A
Authority: CN
Inventors: 陈昌雷; 陈明祥; 江志坚; 张立应
Original assignee: Yancheng Weixin Electronics Co Ltd
Current assignee: Yancheng Weixin Electronics Co Ltd
Priority date: 2020-02-20
Filing date: 2020-02-20
Publication date: 2020-06-12

Abstract

The invention provides a composite film for a voltage machine, which is formed by sequentially overlapping a conductive layer, a buffer layer and a release film. The embodiment of the application also discloses a using method of the composite film for the voltage machine, which comprises the following steps: continuously superposing a conducting layer of a composite film on a voltage machine carrying platform outwards, wherein the superposition times of the composite film are even times, placing a product to be laminated in an interlayer opposite to a release film, placing a mirror plate in the interlayer opposite to the conducting layer, and starting equipment for laminating. According to the composite film, the risk of product abnormity caused by foreign matters clamped between the cushion layers is avoided by integrating the plurality of cushion layers into the composite film, and meanwhile, the production efficiency is improved; in addition, the composite film for the voltage machine saves the use of kraft paper, and is more favorable for environmental protection.

Description

Composite film for voltage machine and use method thereof

Technical Field

The invention relates to the field of production of flexible circuit boards, in particular to a composite film for a voltage machine and a using method thereof.

Background

In the flexible circuit board production industry, a plurality of single-layer circuit boards need to be processed by a voltage machine so as to be bonded into a multi-layer circuit board. The principle is that continuous roll-shaped copper foil is used for generating high temperature, the prepreg material is heated and certain pressure is applied to the prepreg material, semi-cured epoxy resin is extruded and starts to flow and solidify, the multilayer circuit board is bonded together, and a layer of reliable insulator is formed.

When the existing voltage machine is pressed, release films, buffer layers, kraft paper, aluminum foils and the like are required to be respectively laid on the upper side and the lower side of a product to be pressed, so that the risk of product abnormity caused by foreign matters clamped between cushion layers exists, and the production efficiency is reduced; meanwhile, a large amount of kraft paper is consumed in the existing pressing mode, and the environment is not protected easily.

Disclosure of Invention

In order to solve the technical problem, an embodiment of the application provides a composite film for a voltage machine, which is formed by sequentially overlapping a conductive layer, a buffer layer and a release film.

Preferably, the conductive layer is a copper foil or an aluminum foil.

Preferably, the buffer layer is one or more of a mixture of polymer materials which are molten semi-solid at a temperature of 110 ± 10 ℃, and can be a PE (polyethylene) film, an OPP (oriented polypropylene) film or a PVC (polyvinyl chloride) film.

The embodiment of the application also discloses a using method of the composite film for the voltage machine, which comprises the following steps:

continuously superposing a conducting layer of a composite film on a voltage machine carrying platform outwards, wherein the superposition times of the composite film are even times, placing a product to be laminated in an interlayer opposite to a release film, placing a mirror plate in the interlayer opposite to the conducting layer, and starting equipment for laminating.

Preferably, the mirror plate is a steel plate.

Preferably, the pressing is performed at a temperature of 160-220 ℃ and at a pressure of 5-30kg/cm²Pressing under pressure for 60-240 min.

Compared with the prior art, the embodiment of the application has the following advantages:

1. the composite film integrates various cushion layers, so that the risk of product abnormity caused by foreign matters clamped between the cushion layers is avoided, and the production efficiency is improved;

2. the composite film for the voltage machine saves the use of kraft paper, and is more favorable for environmental protection.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.

FIG. 1 is a cross-sectional view of an aluminum composite film for a voltage machine.

Fig. 2 is a schematic diagram of a method for using a composite film for a voltage machine.

In the drawings, there is shown: 1. compounding film; 2. a stage; 3. pressing the product; 4. a mirror plate; 5. an upper pressing table; 11. a conductive layer; 12. a buffer layer; 13. and (4) a release film.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the examples and the accompanying drawings. These exemplary embodiments may be embodied in many different forms and should not be construed as limited to only the embodiments set forth herein.

Example 1

The composite film (1) for the voltage machine is formed by sequentially overlapping a conductive layer (11), a buffer layer (12) and a release film (13) in combination with the graph 1. Specifically, the conducting layer is a copper foil with the thickness of 20um, and plays a role in conducting electricity and realizing heating; the buffer layer is a PE film with the thickness of 100um, and the effect is to avoid the product to be pressed from being in hard contact with the mirror plate to cause product damage.

A use method of a composite film for a voltage machine comprises the following steps:

referring to fig. 2, the conducting layer (11) of the composite film is continuously overlaid on the electric press carrier (2) outwards, the overlaying frequency of the composite film is even, the conducting layer (11) at the bottom is in contact with the carrier (2), the conducting layer (11) at the top is in contact with the upper pressing table (5), the product (3) to be pressed is placed in the interlayer opposite to the release film (13), the steel plate is placed in the interlayer opposite to the conducting layer (11), the equipment is started to press, the pressing temperature is 160 ℃, and the pressing pressure is 5kg/cm²And the pressing time is 60 min.

Example 2

The composite film (1) for the voltage machine is formed by sequentially overlapping a conductive layer (11), a buffer layer (12) and a release film (13) in combination with the graph 1. Specifically, the conducting layer is an aluminum foil with the thickness of 30um, and plays a role in conducting electricity to realize heating; the buffer layer is an OPP film with the thickness of 150um and has the function of avoiding the damage of a product caused by the hard contact between the product to be pressed and the mirror plate.

referring to fig. 2, the conducting layer (11) of the composite film is continuously overlaid on the electric press carrier (2) outwards, the overlaying frequency of the composite film is even, the conducting layer (11) at the bottom is in contact with the carrier (2), the conducting layer (11) at the top is in contact with the upper pressing table (5), the product (3) to be pressed is placed in the interlayer opposite to the release film (13), the steel plate is placed in the interlayer opposite to the conducting layer (11), the equipment is started to press, the pressing temperature is 220 ℃, and the pressing pressure is 30kg/cm²The pressing time is 240 min.

Example 3

The composite film (1) for the voltage machine is formed by sequentially overlapping a conductive layer (11), a buffer layer (12) and a release film (13) in combination with the graph 1. Specifically, the conducting layer is an aluminum foil with the thickness of 25um, and plays a role in conducting electricity to realize heating; the buffer layer is the composite film of OPP membrane of 60um thickness and the PVC membrane of 60um thickness, and the effect is to avoid waiting to pressfitting product and runner plate hard contact and lead to the product to damage.

referring to fig. 2, a composite film conducting layer (11) is continuously overlaid outwards on a voltage machine carrying platform (2), the overlaying frequency of the composite film is even number of times, the conducting layer (11) at the bottom is in contact with the carrying platform (2), the conducting layer (11) at the top is in contact with an upper pressing platform (5), a product (3) to be pressed is placed in an interlayer opposite to a release film (13), a steel plate is placed in the interlayer opposite to the conducting layer (11), pressing is carried out by starting equipment, the pressing temperature is 190 ℃, the pressing pressure is 20kg/cm2, and the pressing time is 180 min.

According to the embodiment of the application, a plurality of cushion layers are integrated into the composite film, so that the risk of product abnormity caused by foreign matters clamped between the cushion layers is avoided, and meanwhile, the production efficiency is improved; in addition, the composite film for the voltage machine saves the use of kraft paper, and is more favorable for environmental protection.

The foregoing has described the general principles, principal features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.

Claims

1. A composite film (1) for a voltage machine is characterized by being formed by sequentially overlapping a conductive layer (11), a buffer layer (12) and a release film (13).

2. The composite film for use in a dynamoelectric machine of claim 1, wherein said conductive layer is a copper foil or an aluminum foil.

3. The composite film for voltage machine according to claim 1, wherein the buffer layer is one or more of a mixture of polymer materials that exhibit a molten semi-solid state at a temperature of 110 ± 10 ℃, and may be a PE (polyethylene) film, an OPP (oriented polypropylene) film, or a PVC (polyvinyl chloride) film.

4. The use method of the composite film for the voltage machine is characterized by comprising the following steps:

continuously superposing a composite film conducting layer (11) outwards on a voltage machine carrier (2), wherein the superposition times of the composite film are even number of times, placing a product (3) to be laminated in an interlayer opposite to a release film (13), placing a mirror plate (4) in the interlayer opposite to the conducting layer (11), and starting equipment for laminating.

5. Use of a composite film for an electrical machine according to claim 4, characterized in that the mirror plate (4) is a steel plate.

6. The method as claimed in claim 4, wherein the pressing is performed at 220 ℃ and 5-30kg/cm²Pressing under pressure for 60-240 min.