Novel integrated membrane preparation device

Abstract

The utility model discloses a novel integrated film preparation device which comprises a carrier film unwinding roller, a film extrusion die head for extruding a conventional film, a composite roller structure for laminating and compounding the carrier film and the conventional film, and a heating structure for heating and tempering the extruded conventional film, the conventional film is introduced into the composite roller structure through the heating structure to be composited with the carrier film to form an integrated film. The integrated film preparation device is reasonable in structural design, an extruded conventional film is subjected to tempering heat treatment through the arranged heating lamp tube before film covering, the film shrinkage rate is reduced, the film compounding flowability is improved, cooling treatment is conducted after embossing compounding is conducted through the embossing roller, and the compounding thickness is uniform.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic thin films, and in particular to a novel integrated film preparation device. Background Technique

[0002] In the current environment, the technological iteration in the photovoltaic field is becoming increasingly innovative. At present, the introduction of cell components with 0BB technology is an upcoming mainstream technological trend. With the introduction of photovoltaic modules with 0BB technology, corresponding 0BB battery packaging solutions also require updates from photovoltaic film manufacturers. Currently, many film manufacturers have introduced two packaging solutions, one is carrier film packaging, and the other is integrated film packaging. In the initial stage of technology development, both solutions have their own advantages and disadvantages.

[0003] For the two packaging solutions introduced by photovoltaic film manufacturers, the carrier film can well package 0BB battery chips by adjusting the formula and irradiation pretreatment parameters, and will not affect conventional films. However, for the production and use of the carrier film, the production process requirements of film manufacturers are more stringent. Photovoltaic module manufacturers need to add additional production processes, resulting in higher production costs and usage costs of the carrier film. It is difficult to control the production yield of the film. Similarly, due to the addition of processes, photovoltaic module manufacturers also need to bear the cost problem of low yield caused by immature early processes. The advantages of the integrated film are more obvious. Its production process requirements are not as high as those of the carrier film, and the production cost is lower. For photovoltaic module manufacturers, the use of the integrated film is not much different from the use of conventional films, and there is no need to add additional production processes, which helps to reduce costs. At the same time, the disadvantages of the integrated film are also very obvious. It is difficult to control the thickness of the pre-treatment layer produced uniformly, and it is difficult to obtain effective feedback on the irradiation dose and depth, making irradiation pre-treatment difficult. At the same time, due to the uneven pre-treatment layer, irradiation also faces uneven problems. Therefore, the integrated film is prone to problems such as defects in the packaged components.

[0004] For example, a production device for embossed plastic films used in vacuum packaging disclosed in Patent CN2853379Y has a cast plastic film production mechanism. A composite embossing and shaping mechanism is arranged behind the cast plastic film production mechanism. The composite embossing and shaping mechanism has an embossing and shaping roller and a pressure-bearing roller arranged oppositely, and embossing protrusions are arranged on the surface of the embossing and shaping roller. First, a plastic film with high moisture barrier is produced by the cast plastic film production mechanism, and then it is sent to the composite embossing and shaping mechanism to be compounded with another preheated high-barrier plastic film substrate; its direct roll compounding has the problem of uneven compounding thickness. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides a novel integrated film preparation device to achieve the purpose of uniform compounding thickness.

[0006] To solve the above technical problems, the technical solution adopted by the present utility model is as follows:

[0007] The novel integrated film preparation device includes a carrier film unwinding roller, a film extrusion die head for extruding a conventional film, and a composite roller structure for laminating and compounding the carrier film and the conventional film. It also includes a heating structure for heat tempering the extruded conventional film. The conventional film is introduced into the composite roller structure through the heating structure to form an integrated film with the carrier film.

[0008] Furthermore:

[0009] A cooling roller for cooling the integrated film is provided behind the composite roller structure.

[0010] The heating structure is a pair of heating lamps arranged oppositely, and there is a gap for the conventional film to pass through between the pair of heating lamps.

[0011] The composite roller structure includes a rubber roller and an embossing roller arranged oppositely, and the rubber roller, the embossing roller, and the cooling roller are arranged side by side in sequence.

[0012] Each heating lamp is fixed on the frame of the device through a corresponding bracket, and an arc-shaped groove for positioning the heating lamp is provided on the inner side of the top of the bracket.

[0013] A set of traction rollers is provided behind the cooling roller.

[0014] The bottom of the bracket is arranged on the frame through a detachable adjustment structure.

[0015] Compared with the prior art, the present utility model has the following advantages:

[0016] The structure of the integrated film preparation device is reasonably designed. Before laminating, the extruded conventional film is subjected to heat tempering treatment by the provided heating lamps to reduce the film shrinkage rate and improve the fluidity of film compounding. After embossing and compounding by the embossing roller, cooling treatment is carried out, and the compounding thickness is uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The following briefly describes the content expressed by each drawing in this specification and the marks in the drawings:

[0018] Figure 1 It is a schematic structural diagram of the device of the present utility model.

[0019] In the figure:

[0020] 1. Carrier film unwinding roller, 2. Film extrusion die head, 3. Conventional film, 4. Heating lamp, 5. Rubber roller, 6. Embossing roller, 7. Cooling roller, 8. Traction roller. DETAILED DESCRIPTION OF THE INVENTION

[0021] The following will, with reference to the accompanying drawings, further elaborate on the specific implementation manners of the present utility model through the description of embodiments.

[0022] As Figure 1 shown, this new integrated film preparation device includes a carrier film unwinding roller 1, a film extrusion die head 2 for extruding a conventional film, a composite roller structure for laminating and compounding the carrier film and the conventional film, and a heating structure for heat tempering the extruded conventional film.

[0023] The conventional film 3 is an EVA / EPE adhesive film; the conventional film is introduced into the composite roller structure through the heating structure and compounded with the carrier film to form an integrated film.

[0024] Furthermore, a cooling roller 7 for cooling the integrated film is provided behind the composite roller structure, and the composite integrated film is quickly cooled by the cooling roller; a set of traction rollers 8 is provided behind the cooling roller to ensure the tension of the integrated film. The composite roller structure includes a rubber roller 5 and an embossing roller 6 arranged oppositely, and the rubber roller, the embossing roller, and the cooling roller are arranged side by side in sequence, with a compact structure.

[0025] The structure design of the integrated film preparation device of the present utility model is reasonable. Before laminating, the extruded conventional film is subjected to heat tempering treatment by the provided heating lamps, reducing the film shrinkage rate and improving the fluidity of film compounding. After embossing and compounding by the embossing roller, cooling treatment is carried out, and the compounding thickness is uniform.

[0026] Preferably, the heating structure is a pair of heating lamps 4 arranged oppositely, and there is a gap for the conventional film to pass through between the pair of heating lamps; the conventional film passes through between the pair of heating lamps and is heated synchronously by the heating lamps on both sides, with sufficient heating.

[0027] Each of the heating lamps is fixed on the frame of the device through a corresponding bracket, and an arc-shaped groove for positioning the heating lamp is provided inside the top of the bracket, with a compact structure.

[0028] Furthermore, the bottom of the bracket is provided on the frame through a detachable adjustment structure; specifically, a waist-shaped fixing hole is provided at the bottom of the bracket, and by adjusting the relative positions of the two brackets, the gap size between the two heating lamps can be adjusted, thereby adjusting the heating effect.

[0029] This patent proposes to laminate the already irradiated carrier film on the conventional adhesive film through the means of laminating, which can also be flexibly matched with the conventional adhesive film EVA / EPE.

[0030] First, the produced carrier film is irradiated and wound up. At the same time, it needs to be slit into a certain width, and the remaining materials after slitting can be recycled into the main machine to reduce costs. Second, the slit carrier film is combined with the conventional film extruded from the die head at a certain speed and then enters the embossing roller for embossing and flowing out. Third, it is slit after the traction roller to cut off and recycle the excess conventional film edge materials, which can control the excess width of the conventional adhesive film relative to the adhered skin film. It can also be flexibly switched for the customized size of customers without changing the equipment. After slitting, it can be wound up and packed in boxes and directly used for lamination by photovoltaic module manufacturers.

[0031] The utility model can flexibly change the thickness of the irradiated adhesive film and the thickness of the conventional adhesive film; it can be flexibly matched according to the types of the irradiated adhesive film and the conventional adhesive film used, and the change is simple; before laminating, the extruded conventional film is heat-treated by the set heating lamp tubes to reduce the film shrinkage rate, improve the fluidity of film lamination, and improve the lamination uniformity effect.

[0032] The above is only an illustration of the preferred embodiments of the utility model, and the above technical features can be arbitrarily combined to form multiple embodiment schemes of the utility model.

[0033] The above has made an exemplary description of the utility model in conjunction with the drawings. Obviously, the specific implementation of the utility model is not limited by the above methods. As long as various non-substantive improvements are made by adopting the concept and technical scheme of the utility model, or the concept and technical scheme of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A novel integrated film preparation device, comprising a carrier film unwinding roller, a film extrusion die head for extruding a conventional film, and a composite roller structure for laminating the carrier film and the conventional film, characterized in that: The invention also comprises a heating structure for heating and tempering the extruded conventional film. The conventional film is introduced into the composite roller structure through the heating structure to be composited with the carrier film to form an integral film.

2. The novel integrated membrane preparation device according to claim 1, characterized in that: A cooling roller for cooling the integrated film is provided behind the composite roller structure.

3. The novel integrated membrane preparation device according to claim 1, characterized in that: The heating structure is a pair of heating lamp tubes arranged opposite to each other, and a gap is provided between the pair of heating lamp tubes for a conventional film to pass through.

4. The novel integrated membrane preparation device according to claim 2, characterized in that: The composite roller structure comprises a rubber roller and an embossing roller which are arranged opposite to each other, and the rubber roller, the embossing roller and the cooling roller are arranged side by side in sequence.

5. The novel integrated membrane preparation device according to claim 3, characterized in that: Each of the heating lamp tubes is fixed on the frame of the device through a corresponding bracket, and an arc groove for positioning the heating lamp tube is provided on the inner side of the top of the bracket.

6. The novel integrated membrane preparation device according to claim 4, characterized in that: A group of traction rollers are arranged behind the cooling roller.

7. The novel integrated membrane preparation device according to claim 5, characterized in that: The bottom of the bracket is arranged on the frame through a detachable adjustment structure.

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