Preparation method of temperature-responsive structural color film

Abstract

The application discloses a preparation method of a temperature-responsive structural color film, comprising a PMMA film and an auxiliary cutting device, wherein the auxiliary cutting device comprises a bottom plate, a power pressing plate is arranged above the bottom plate, the power pressing plate and the bottom plate are connected through a first guide assembly, a cutting knife arranged in a closed loop is arranged at the bottom of the power pressing plate, a pressing plate is arranged in the cutting knife, a second guide assembly is arranged between the pressing plate and the power pressing plate, an annular pressing plate is further arranged on the outer periphery of the cutting knife, and a third guide assembly is arranged between the annular pressing plate and the power pressing plate; and the PMMA film and the auxiliary cutting device are used for cutting preparation. The structural color film can be effectively cut and trimmed, and the quality is high.

Description

TECHNICAL FIELD

[0001] The application relates to a preparation method of a temperature-responsive structural color film. BACKGROUND

[0002] As a disruptive color presentation technology, the unique nature of structural color will bring broad application prospects in the fields of printing, display, spraying and anti-counterfeiting.

[0003] As a more application, structural color films can be selected according to different functions of application scenarios, and can be applied to packaging, fabric, anti-counterfeiting, identification and the like. These application modes are to fix the structural color film in whole with the attached object, and then uniformly cut and the like to form a whole structure.

[0004] In some special scenarios, the structural color film needs to be arranged locally on the attached object, which requires the structural color film to be cut in advance. Since the structural color film is thin, it is easy to have problems such as burr and tearing in the process of separate cutting. SUMMARY

[0005] The technical problem to be solved by the application is to provide a preparation method of a temperature-responsive structural color film, which can effectively cut the structural color film and has high quality.

[0006] In order to solve the above technical problems, the application provides a preparation method of a temperature-responsive structural color film, which comprises a PMMA film and an auxiliary cutting device. The auxiliary cutting device comprises a bottom plate, a power pressing plate is arranged above the bottom plate, the power pressing plate and the bottom plate are connected through a first guide assembly, a cutting knife in a closed loop is arranged at the bottom of the power pressing plate, a pressing plate is arranged in the cutting knife, a second guide assembly is arranged between the pressing plate and the power pressing plate, an annular pressing plate is further arranged on the outer periphery of the cutting knife, and a third guide assembly is arranged between the annular pressing plate and the power pressing plate. The preparation method comprises the following steps:

[0007] 1) The PMMA film is pasted with a film stack of the structural color film to obtain a transfer body;

[0008] 2) The transfer body is placed between the power pressing plate and the bottom plate, and the periphery of the transfer body is located below the annular pressing plate;

[0009] 3) The power pressing plate descends, the annular pressing plate first presses the transfer body on the bottom plate, then the pressing plate presses the transfer body on the bottom plate, and finally the cutting knife cooperates with the bottom plate to cut the transfer body to obtain a semi-finished product film;

[0010] 4) The PMMA film is removed to obtain a structural color film with a target shape.

[0011] Further, a lower die groove corresponding to the cutting knife is arranged on the bottom plate.

[0012] Further, an installation groove is arranged on the bottom plate, a protrusion with a shape consistent with the inner wall of the cutting knife is arranged in the installation groove, the protrusion is locked in the installation groove, and the protrusion and the installation groove cooperate to form the lower die groove.

[0013] Further, an adapter frame is arranged above the power pressing plate, and the adapter frame and the power pressing plate are fixed through a connecting column.

[0014] Further, a spring is sleeved on the third guide assembly between the annular pressing plate and the power pressing plate, and the two ends of the spring are in abutment with the annular pressing plate and the power pressing plate respectively.

[0015] Further, the semi-finished film is transferred to the surface of the base material, then alcohol is added on the PMMA film surface of the semi-finished film, and the PMMA film is removed by using the slight solubility of alcohol to the PMMA film.

[0016] The beneficial effects of the present application are:

[0017] 1. The PMMA film is used to combine the film stack of the structural color film, so that the overall strength during cutting can be improved, the structural color film is not damaged due to being pulled during cutting, and the cutting quality is improved.

[0018] 2. The auxiliary cutting device can quickly cut the structural color film into a required shape and size, the cutting efficiency is high, and the cutting quality is guaranteed through the cooperation of the pressing plate and the annular pressing plate during cutting.

[0019] 3. The PMMA film can be directly taken away to obtain the structural color film, or the PMMA film can be used together with the structural color film and then removed after use, so that the structural color film is effectively protected. DETAILED DESCRIPTION

[0020] Figure 1 is a structural schematic view of the auxiliary cutting device of the present application;

[0021] Figure 2 is a partial structure enlarged schematic view in the present application; Figure 1

[0022] Figure 3 is a partial structure schematic view of the cutting knife of the present application;

[0023] Figure 4 is a partial structure schematic view of the pressing plate of the present application;

[0024] Figure 5 is a cutting part sectional structure schematic view of the present application. DETAILED DESCRIPTION

[0025] ​The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention.

[0026] Reference Figures 1 to 5 As shown, an embodiment of the method for preparing the temperature-responsive structural color film of the present invention includes a PMMA film and an auxiliary cutting device. The auxiliary cutting device includes a base plate 1, a power pressure plate 2 is disposed above the base plate, and the power pressure plate and the base plate are connected by a first guide component 3 to ensure that the relative position between the power pressure plate and the base plate in the axial direction is fixed and that they can be raised and lowered. A closed-loop cutting blade 4 is fixedly disposed at the bottom of the power pressure plate. The cutting blade is designed according to the shape to be cut. A pressing plate 5 is disposed inside the cutting blade. A second guide component 6 is disposed between the pressing plate and the power pressure plate for moving and guiding and avoiding obstacles. An annular pressure plate 7 is also disposed on the outer periphery of the cutting blade. A third guide component 8 is disposed between the annular pressure plate and the power pressure plate.

[0027] In use, the PMMA film is first bonded to the stack of structural color films. This can be done with the help of adhesive or by using the electrostatic bonding effect of the PMMA film to fix it, thus obtaining the transfer body.

[0028] The transfer body is then placed between the power pressure plate and the base plate, with the periphery of the transfer body located below the annular pressure plate;

[0029] The auxiliary cutting device is started, and the power pressure plate descends. During the entire descent process, the annular pressure plate first presses the transfer body onto the base plate, and then the pressing plate presses the transfer body onto the base plate. The two work together to fix the entire transfer body from the outside and the middle. Finally, the cutting blade works with the base plate to cut the transfer body. Since the entire body is fixed in position from the outside to the inside, there will be no pulling problem during cutting, resulting in high cutting quality and obtaining a semi-finished film.

[0030] The semi-finished film can be stored for later use, or the PMMA film can be directly removed to obtain a structural color film of the target shape. When removing the PMMA film, depending on the material of the target material, alcohol can be dropped onto the surface of the PMMA film of the semi-finished film. Taking advantage of the slight solubility of PMMA film in alcohol, the PMMA film can be removed. After the semi-finished film is transferred to the substrate surface, i.e., the target surface, the PMMA film can be removed again with alcohol.

[0031] To facilitate cutting, a lower die groove 9 is provided on the base plate corresponding to the cutting blade to improve cutting quality. To facilitate quick engagement between the cutting blade and the lower die groove, a mounting groove is provided on the base plate. A protrusion with the same shape as the inner wall of the cutting blade is provided in the mounting groove. The protrusion is locked in the mounting groove, and the protrusion and the mounting groove cooperate to form the lower die groove. When the cutting blade is replaced, the protrusion can also be quickly replaced.

[0032] An adapter frame 10 is also provided above the power pressure plate. The adapter frame is fixed to the power pressure plate by a connecting column 11. The adapter frame does not affect the movement of the guide assembly during the cutting process. The adapter frame is connected to the power output end. Since the annular pressure plate presses the transfer body on the outside and is also the first part to contact the transfer body, a spring 12 is sleeved on the third guide assembly between the annular pressure plate and the power pressure plate. The two ends abut against the annular pressure plate and the power pressure plate, respectively. After contact and during the cutting process, the annular pressure plate presses the transfer body with its own weight, and at the same time, it applies pressure to the transfer body through the extrusion force after the spring deformation, thereby ensuring that the transfer body does not shift.

[0033] This method, through the combination of PMMA film and auxiliary cutting device, can greatly improve the cutting quality of the film, thereby meeting the needs of products that require localized film application.

[0034] The above embodiments are merely preferred embodiments provided to fully illustrate the present invention, and the scope of protection of the present invention is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on the present invention are all within the scope of protection of the present invention. The scope of protection of the present invention is defined by the claims.

Claims

1. A method for preparing a temperature-responsive structural color thin film, characterized in that, The device includes PMMA film and an auxiliary cutting device. The auxiliary cutting device includes a base plate, a power pressure plate positioned above the base plate, and a first guide assembly connecting the power pressure plate and the base plate. A closed-loop cutting blade is positioned at the bottom of the power pressure plate, a pressing plate is positioned inside the cutting blade, a second guide assembly is positioned between the pressing plate and the power pressure plate, and an annular pressure plate is positioned on the outer periphery of the cutting blade. A third guide assembly is positioned between the annular pressure plate and the power pressure plate. The device includes the following steps: 1) The PMMA film and the structural color film are bonded together to obtain the transfer body; 2) Place the transfer body between the power pressure plate and the base plate, with the periphery of the transfer body located below the annular pressure plate; 3) The power plate descends, first the annular plate presses the transfer body onto the base plate, then the pressing plate presses the transfer body onto the base plate, and finally the cutting blade, in conjunction with the base plate, cuts the transfer body to obtain a semi-finished film; 4) Remove the PMMA film to obtain a structural color film of the target shape.

2. The method for preparing a temperature-responsive structural color thin film as described in claim 1, characterized in that, The base plate corresponding to the cutting blade is provided with a lower die groove for cutting.

3. The method for preparing a temperature-responsive structural color thin film as described in claim 2, characterized in that, The base plate is provided with a mounting groove, and a protrusion with the same shape as the inner wall of the cutting blade is provided in the mounting groove. The protrusion is locked in the mounting groove, and the protrusion and the mounting groove cooperate to form a lower mold groove.

4. The method for preparing a temperature-responsive structural color thin film as described in claim 1, characterized in that, An adapter frame is provided above the power pressure plate, and the adapter frame is fixed to the power pressure plate by a connecting column.

5. The method for preparing a temperature-responsive structural color thin film as described in claim 1, characterized in that, A spring is fitted on the third guide assembly between the annular pressure plate and the power pressure plate, with both ends of the spring abutting against the annular pressure plate and the power pressure plate, respectively.

6. The method for preparing a temperature-responsive structural color thin film as described in claim 1, characterized in that, The semi-finished film is transferred to the surface of the substrate. Then, alcohol is dropped onto the surface of the PMMA film of the semi-finished film. Taking advantage of the slight solubility of alcohol in PMMA film, the PMMA film is removed.

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