Foam diffusion film structure
By designing a foam diffusion film structure, including the foam body, heavy-duty release film, and light-duty release film, the problem of foam damage and deformation caused by poor diffusion film adhesion was solved, achieving efficient bonding and high-yield production.
Patent Information
- Application Number
- CN202520153670.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-23
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-01-23
Smart Images
Figure CN223835172U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of diffusion membrane technology, and more specifically, to a foam diffusion membrane structure. Background Technology
[0002] After the TP module is assembled at the module factory, the bottom surface of the semi-transparent button has an LED strip that reflects onto the back of the button. To make the semi-transparent button display more uniform, two diffusion films need to be added at designated positions on the foam of the TP frame. However, after the foam is manually applied, two diffusion films are manually applied again. When the diffusion films are misaligned, the foam adhesive itself is very strong, and tearing the diffusion film will damage or deform the foam. The entire foam will have to be torn off and reworked, resulting in low yield and low efficiency. Therefore, a foam diffusion film structure needs to be designed to solve the above problems. Utility Model Content
[0003] The purpose of this invention is to propose a foam diffusion film structure, which aims to partially solve the above-mentioned technical problems.
[0004] Specifically, the technical solution of this utility model is as follows: a foam diffusion film structure is proposed, including a foam body, a diffusion film is set on the foam body in the button area, a heavy-duty release film is set on the foam above the diffusion film, and a tear handle is provided on the heavy-duty release film away from the button area for easy tearing off of the heavy-duty release film; a light-duty release film is provided on the other side of the foam body; wherein, the thickness of the foam is 0.35mm to 0.45mm; and the thickness of the diffusion film is 0.45mm to 0.55mm.
[0005] As a preferred technical solution, the thickness of the foam is 0.40mm.
[0006] As a preferred technical solution, the foam has double-sided adhesive on both sides, and the foam thickness is 0.40mm, including the thickness of the double-sided adhesive.
[0007] As a preferred technical solution, the thickness of the lightweight release film is 0.15mm to 0.20mm.
[0008] As a preferred technical solution, a black and white light-blocking adhesive is provided below the diffusion film, and a transparent PET is provided below the black and white light-blocking adhesive.
[0009] As a preferred technical solution, the diffusion film and the transparent PET are connected by black and white light-blocking adhesive.
[0010] As a preferred technical solution, the diffusion film has a haze of 99% and a transmittance of 80%.
[0011] As a preferred technical solution, transparent PET is pasted flush with the white side of the black and white light-blocking adhesive.
[0012] As a preferred technical solution, the width of the transparent PET is between 0.8mm and 1.2mm.
[0013] As a preferred technical solution, the thickness of the transparent PET is 0.04mm.
[0014] The beneficial effects of this utility model are as follows: When applying the diffusion film, clean the foam clamp, place the foam diffusion film and heavy release film downwards into the corresponding foam groove of the clamp, activate the suction hole of the foam groove of the clamp to suck in air, and position and hold the foam. Then, use the manual tear handle to peel off the light release film, place the TP (potential release film) back side down into the TP groove of the clamp, and gently press the TP by hand to make the TP and foam quickly bond together. The diffusion film and foam are bonded together in this way, which effectively solves the problem in the prior art where, when the diffusion film is poorly applied, the foam adhesive itself is strong, and tearing the diffusion film alone will damage or deform the foam, resulting in the entire foam being torn off and reworked, leading to low yield and low efficiency. Attached Figure Description
[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 This is a schematic diagram of the front structure of a foam diffusion film according to an embodiment of the present invention;
[0017] Figure 2 This is a schematic diagram of the back structure of a foam diffusion film according to an embodiment of the present invention;
[0018] Figure 3 This is a schematic diagram of a foam diffusion film stacking structure proposed in an embodiment of the present invention.
[0019] Figure labeling: 1. Foam body; 2. Heavy-duty release film; 21. Tear handle; 3. Light-duty release film; 4. Diffusion film. Detailed Implementation
[0020] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided to make this application more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art.
[0021] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a thorough understanding of embodiments of this application. However, those skilled in the art will recognize that the technical solutions of this application can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., can be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this application.
[0022] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities can be implemented in software, in one or more hardware modules or integrated circuits, or in different network and / or processor devices and / or microcontroller devices.
[0023] The flowcharts shown in the accompanying drawings are merely illustrative and do not necessarily include all content and operations / steps, nor do they necessarily have to be performed in the described order. For example, some operations / steps can be broken down, while others can be combined or partially combined; therefore, the actual execution order may change depending on the specific circumstances.
[0024] It should be noted that "multiple" as mentioned in this article refers to two or more.
[0025] Example
[0026] like Figure 1-3 As shown, this embodiment presents a foam diffusion film 4 structure, including a foam body 1. A diffusion film 4 is positioned on the foam body 1 near the button area. A heavy-duty release film 2 is positioned above the diffusion film 4. A tear handle 21 is located on the heavy-duty release film 2 away from the button area for easy removal. This release film protects the double-sided adhesive of the foam from contamination and is removed before bonding to the vehicle housing at the factory. The foam adhesive is then adhered to the designated location on the module.
[0027] A lightweight release film 3 is provided on the other side of the foam body 1; wherein the thickness of the foam is 0.35mm to 0.45mm; the thickness of the diffusion film 4 is 0.45mm to 0.55mm. Preferably, the thickness of the foam is 0.40mm. Double-sided adhesive is provided on both sides of the foam, and the thickness of the foam is 0.40mm, including the thickness of the double-sided adhesive. It is used for waterproofing and dustproofing after the TP is attached to the module frame. Both sides have strong double-sided adhesive, one side is used to attach to the ink edge on the back of the TP, and the other side is attached to the module of the car manufacturer.
[0028] Preferably, the thickness of the lightweight release film 3 is 0.15mm to 0.20mm. This release film TP, used to protect the double-sided adhesive of the foam from contamination, is removed before lamination, allowing the foam adhesive to adhere to the ink on the back of the TP around its edges. The lightweight release film 3 also features a tear handle 21 for quick removal.
[0029] Preferably, not shown in the figure, a black and white light-blocking adhesive is provided below the diffusion film 4, and a transparent PET is provided below the black and white light-blocking adhesive. Further, the diffusion film 4 and the transparent PET are connected by the black and white light-blocking adhesive. The transparent PET is flush with the white surface of the black and white light-blocking adhesive, wherein the width of the transparent PET is between 0.8mm and 1.2mm, and the thickness of the transparent PET is 0.04mm. This effectively improves the brightness of the front of the display screen.
[0030] Preferably, the diffusion film 4 has a haze of 99% and a transmittance of 80%. The light distribution of the assembled light strip is more uniform, improving the brightness of the front and making the reflected shadows invisible from the front.
[0031] The process of laminating foam diffusion film 4 onto TP is as follows:
[0032] Clean the foam applicator, place the foam diffusion film 4 and the heavy release film downwards into the corresponding foam slots of the applicator, activate the suction port of the foam slot to suck in air, and position and hold the foam. Then, use the manual peel handle 21 to peel off the light release film. Place the TP (photocopies of the foam) back side down into the TP slot of the applicator, and gently press the TP by hand to quickly bond the TP to the foam. In this way, the foam bonding and diffusion film 4 bonding are completed in an integrated manner, which improves efficiency and reduces the product defect rate.
[0033] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.
Claims
1. A foam diffusion film structure, characterized in that, The device includes a foam body, a diffusion film located on the button area of the foam body, a heavy-duty release film located above the diffusion film on the foam body, and a tear handle located away from the button area on the heavy-duty release film for easy tearing off; a light-duty release film is located on the other side of the foam body; wherein, the thickness of the foam is 0.35mm to 0.45mm; and the thickness of the diffusion film is 0.45mm to 0.55mm.
2. The foam diffusion film structure according to claim 1, characterized in that, The thickness of the foam is 0.40 mm.
3. The foam diffusion film structure according to claim 2, characterized in that, The foam has double-sided adhesive on both sides, and the foam thickness is 0.40mm, including the thickness of the double-sided adhesive.
4. The foam diffusion film structure according to claim 1, characterized in that, The thickness of the lightweight release film is 0.15 mm to 0.20 mm.
5. The foam diffusion film structure according to claim 1, characterized in that, Below the diffusion film is a black and white light-blocking adhesive, and below the black and white light-blocking adhesive is a transparent PET.
6. The foam diffusion film structure according to claim 5, characterized in that, The diffusion film is connected to the transparent PET via black and white light-blocking adhesive.
7. The foam diffusion film structure according to claim 6, characterized in that, The diffusion film has a haze of 99% and a transmittance of 80%.
8. The foam diffusion film structure according to claim 7, characterized in that, The transparent PET is flush with the white side of the black and white opaque adhesive.
9. A foam diffusion film structure according to claim 6, characterized in that, The width of the transparent PET is between 0.8mm and 1.2mm.
10. A foam diffusion film structure according to claim 9, characterized in that, The thickness of the transparent PET is 0.04 mm.