A low-grammage adhesive film production device
By introducing structures such as an insulation zone, a mesh belt conveyor system, and an extrusion die into the photovoltaic encapsulation film production equipment, the problems of uneven thickness and mold wear in the production of low-weight encapsulation films have been solved, achieving efficient production and cost reduction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 义乌晶诚光伏材料有限公司
- Filing Date
- 2025-06-04
- Publication Date
- 2026-05-26
AI Technical Summary
Existing photovoltaic encapsulation film production equipment suffers from problems such as uneven thickness, difficulty in winding, severe mold wear, and high production costs when producing low-weight products.
By employing structures such as an insulated zone, a mesh belt conveyor system, and an extrusion die, and by fine-tuning the die opening, adjusting the drive shaft speed, and adding a constant-temperature blowing device, the film production process is optimized, mold wear and material waste are reduced, and production efficiency is improved.
It reduces machine start-up time and mold wear, reduces material waste, improves production efficiency and mold lifespan, and reduces production costs.
Smart Images
Figure CN224276304U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of adhesive film production technology, and more specifically, to a low-grammage adhesive film production device. Background Technology
[0002] In addition to ordinary photovoltaic encapsulant films used for bonding solar panels, photovoltaic glass, and backsheets, low-weight photovoltaic encapsulant films are also required for ease of production. Low-weight photovoltaic encapsulant films can be used to fix the position between solar cells and fix solder ribbons before encapsulation. The use of low-weight encapsulant films can improve the encapsulation efficiency of the module end and reduce costs. Existing photovoltaic encapsulant film production equipment is usually used to produce products with a thickness of 0.4~0.8mm. When producing products with lower thickness and weight, if the original equipment is used without changing the mold, the production of low-weight photovoltaic encapsulant films is prone to defects such as uneven thickness, inability to complete winding, large shrinkage rate, and high frequency of mold cleaning.
[0003] Therefore, there is an urgent need for a low-grammage adhesive film production device to solve the above problems. Utility Model Content
[0004] To overcome the aforementioned deficiencies of the prior art, embodiments of this utility model provide a low-grammage adhesive film production device. By incorporating a heat preservation zone, a mesh belt conveyor system, and an extrusion die, the device reduces the die opening adjustment time during startup, decreases startup time, and minimizes abnormal adhesive film appearance caused by excessive die lip adjustment. It also reduces wear caused by die compression, extends die life, and lowers production costs. Furthermore, it addresses the shortcomings of traditional extrusion methods, such as excessively wide trimmed material and significant waste. Narrower trimmed material backfill also reduces abnormal discharge port issues caused by traction roller entanglement. Additionally, it significantly reduces the number of die opening cleaning operations, minimizing material waste, maximizing auxiliary machine traction power, and increasing production capacity, thereby solving the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a low-grammage adhesive film production device, comprising a carrier substrate, an extrusion die head fixedly mounted on one side of the top of the carrier substrate via a bracket, a mesh belt conveyor system disposed at the bottom of one side of the extrusion die head, a heat preservation zone disposed at the top of the mesh belt conveyor system, a control panel disposed at the front of the mesh belt conveyor system, and a thickness gauge CNC board disposed at the front of the mesh belt conveyor system.
[0006] In a preferred embodiment, the insulation zone includes an insulation chamber and a constant temperature air blowing device.
[0007] In a preferred embodiment, the thickness gauge control board is located on the side of the control panel near the extrusion die.
[0008] The technical effects and advantages of this utility model are as follows:
[0009] This invention, by incorporating a heat preservation zone, a mesh belt conveyor system, and an extrusion die, reduces the time required for die adjustment during startup, thus shortening the overall startup time. It also minimizes abnormal film appearance caused by excessive die lip adjustment, reduces wear on the die due to pressure, extends die life, and lowers production costs. Furthermore, it addresses the shortcomings of traditional extrusion methods, such as excessively wide trimmed material and significant waste. Narrowing the trimmed material backfill also reduces issues like abnormal discharge port due to traction roller entanglement. Additionally, it significantly reduces the number of die cleaning cycles, minimizing material waste, maximizing auxiliary machine traction power, and increasing production capacity. Attached Figure Description
[0010] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0011] Figure 2 This is a side view of the overall three-dimensional structure of this utility model.
[0012] Figure 3 This is a schematic diagram of the extrusion direction of the die head in this utility model.
[0013] The attached diagram is labeled as follows: 1. Extrusion die; 2. Mesh belt conveyor system; 3. Insulation zone; 4. Control panel; 5. Thickness gauge CNC board; 6. Constant temperature blowing device. Detailed Implementation
[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0015] As attached Figure 1-3 As shown, this utility model provides a low-grammage adhesive film production device, including a carrier substrate. An extrusion die 1 is fixedly installed on one side of the top of the carrier substrate by a bracket. A mesh belt conveyor system 2 is provided at the bottom of one side of the extrusion die 1. A heat preservation zone 3 is provided on the top of the mesh belt conveyor system 2. A control panel 4 is provided on the front side of the mesh belt conveyor system 2. A thickness gauge CNC board 5 is provided on the front side of the mesh belt conveyor system 2.
[0016] The heat preservation zone 3 includes a heat preservation chamber and a constant temperature air blowing device 6.
[0017] The thickness gauge CNC board 5 is located on the side of the control panel 4 near the extrusion die 1.
[0018] The specific implementation method is as follows: When using this utility model, the width and thickness of the extrusion die 1 are finely adjusted according to product requirements. After adjustment, the auxiliary machine temperature and traction speed are increased. The rotational speed of the drive shaft is adjusted from low to high and then back to low from the initial end of the mesh belt transmission system 2 to the winding position, with the adjustment size controlled within ±0.2. Within RPM, for traditional casting followed by extrusion molding using rubber rollers and embossing rollers, constant-temperature air blowing devices 6 are added at the peeling positions at the lower and upper ends of the embossing rollers to help the film peel better and prevent excessive static electricity. For mesh belt conveyor production processes, dense constant-temperature air blowing holes are added in the heat preservation zone above the mesh belt and at the peeling point of the film from the mesh belt to help the film form and peel better and prevent excessive static electricity. The melt extruded from the extrusion die 1 achieves stretching and casting of the extruded melt at the closing part of the rubber roller and embossing roller or at the contact part with the mesh belt conveyor system 2. By appropriately increasing the speed of the rubber roller, embossing roller or mesh belt conveyor system 2, the thickness and width of the produced film are reduced, and the edge width is reduced, thus reducing waste output. Depending on the equipment speed and extrusion ratio, films with different thicknesses and basis weights can be produced.
[0019] Working principle of this utility model:
[0020] Refer to the instruction manual appendix Figure 1-3 When using this utility model, by providing a heat preservation zone 3, a mesh belt conveyor system 2, and an extrusion die head 1, the die opening adjustment time can be reduced during startup, thus reducing startup time and minimizing abnormal film appearance caused by excessive die lip adjustment. Simultaneously, wear caused by die compression is reduced, extending die life and lowering production costs. Furthermore, it overcomes the shortcomings of traditional extrusion methods, such as excessively wide and wasteful trimmed material. Narrower trimmed material backfill also reduces the problem of abnormal discharge port caused by traction roller entanglement. Moreover, it significantly reduces the number of die opening cleaning operations, minimizing material waste, maximizing auxiliary machine traction power, and increasing production capacity.
[0021] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.
[0022] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.
[0023] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A low-basis-weight adhesive film production apparatus, comprising a carrier substrate, characterized in that: An extrusion die (1) is fixedly installed on one side of the top of the substrate by a bracket. A mesh belt conveyor system (2) is provided at the bottom of one side of the extrusion die (1). A heat preservation area (3) is provided on the top of the mesh belt conveyor system (2). A control panel (4) is provided on the front side of the mesh belt conveyor system (2). A thickness gauge CNC board (5) is provided on the front side of the mesh belt conveyor system (2).
2. The low-basis-weight adhesive film production apparatus according to claim 1, characterized in that: The insulation zone (3) includes an insulation chamber and a constant temperature air blowing device (6).
3. The low-basis-weight adhesive film production apparatus according to claim 1, characterized in that: The thickness gauge CNC board (5) is located on the side of the control panel (4) near the extrusion die (1).