Charging head face shell based on IML technology
By using IML technology to create glacial river textures on the charging head shell, the problem of traditional charging head shells lacking three-dimensionality and causing user safety concerns is solved, achieving an improvement in visual three-dimensionality and durability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 深圳市永顺康电子科技有限公司
- Filing Date
- 2025-05-20
- Publication Date
- 2026-05-08
AI Technical Summary
Traditional charging head casing manufacturing processes struggle to achieve complex textures and a three-dimensional feel, and the heat generated during fast charging can easily cause user safety concerns.
The charging head shell design adopts IML process, which includes a resin layer, an IML screen printing ink layer and a plastic film. It is cured in a high-temperature oven to form a glacier river texture. Combined with a PET/PC material protective film and an ABS/PMMA/PC material resin layer, it achieves a multi-layer composite structure, which enhances the visual three-dimensionality and durability.
By visually conveying the texture of glaciers and rivers, the product reduces psychological discomfort caused by heat, enhances its appeal, improves its appearance and durability, and meets users' personalized needs.
Smart Images

Figure CN224217759U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of charging head shell design, specifically to a charging head shell based on IML technology. Background Technology
[0002] With the rapid iteration of consumer electronics products, users' demands for the appearance, durability, and personalization of charging devices are increasing. Traditional charging head shell manufacturing processes have limitations in achieving complex textures and three-dimensional tactile effects. They also lack consideration for users' psychological needs. Especially in fast charging scenarios, the overheating of the charging head can easily trigger users' implicit anxiety about safety (even if the temperature is within a reasonable range). Summary of the Invention
[0003] The purpose of this invention is to address the lack of consideration for users' psychological needs in existing technologies by providing a charging head cover based on IML technology.
[0004] To achieve the above objectives, the present invention adopts the following technical solution: a charging head shell based on IML process, which includes a resin layer, an IML screen printing ink layer and a plastic film stacked together from the outside to the inside, wherein the IML screen printing ink layer has a glacial river texture that is displayed through the plastic film 3.
[0005] Furthermore, the IML screen printing ink layer includes a printed pattern and a protective film.
[0006] Furthermore, the protective film is made of PET material.
[0007] Furthermore, the printed pattern of the IML screen printing ink layer is a planar pattern and / or a three-dimensional pattern.
[0008] Furthermore, the IML screen printing ink layer on the plastic film is fixed by baking in a high-temperature oven.
[0009] Furthermore, the plastic film is a PET or PC sheet.
[0010] Furthermore, the resin layer is made of ABS, PMMA, or PC material.
[0011] Furthermore, the thickness of the resin layer is 1mm-2mm, the thickness of the IML screen printing ink layer is 0.1mm-0.3mm, the thickness of the plastic film is 0.1mm-0.3mm, and the total thickness does not exceed 3.0mm.
[0012] After adopting the above technical solution, the beneficial effects of this utility model are as follows:
[0013] By spraying glacier river textures onto the IML screen printing ink layer, a "cool" feeling is visually conveyed, avoiding psychological discomfort caused by users' charging heads getting hot, enhancing the product's approachability, and using the natural glacier river texture to enhance the design's storytelling and natural aesthetics, distinguishing it from the traditional monotonous appearance of charging heads.
[0014] The IML process produces patterns with high clarity, good three-dimensionality, and scratch and wear resistance. The design and pattern can be changed at will to enhance the product's aesthetic appearance. Attached Figure Description
[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 This is a schematic diagram of the structure of this utility model.
[0017] Figure 2 This is the production process of this utility model.
[0018] Explanation of reference numerals in the attached diagram: 1. Resin layer; 2. IML screen printing ink layer; 21. Printed pattern; 22. Protective film; 3. Plastic film. Detailed Implementation
[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Terms such as "upper," "lower," "left," "right," "middle," and "one" used in the preferred embodiments are merely for clarity of description and are not intended to limit the scope of implementation of the present invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of implementation of the present invention.
[0020] See Figure 1-2 As shown, the technical solution adopted in this specific embodiment is as follows: A charging head shell based on IML process adopts a multi-layer composite structure, consisting of a resin layer 1, an IML screen printing ink layer 2, and a plastic film 3 from the outside to the inside. The IML screen printing ink layer 2 is cured in a high-temperature oven to form a glacial river texture, presenting a three-dimensional visual effect through the transparent plastic film 3, enhancing the product's appearance. The ink layer includes a protective film 22 made of PET / PC material and a flat / three-dimensional printed pattern 21. The plastic film 3 is made of PET or PC sheet, and the resin layer 1 is made of ABS, PMMA, or PC material, allowing for diverse material combinations.
[0021] This structure achieves performance optimization through precise thickness control: the resin layer 1 is 1mm-2mm thick, the IML screen printing ink layer is 0.1mm-0.3mm thick, and the plastic film is 0.1mm-0.3mm thick, with a total thickness not exceeding 3.0mm. The embedded ink design prevents surface wear and fading, the protective film 22 enhances abrasion resistance, and the high-temperature curing process ensures ink adhesion, achieving a slim and lightweight product while maintaining structural strength. This design combines high-quality texture and durability, making it particularly suitable for charging device casings where aesthetics and practicality are paramount.
[0022] The production process of this utility model is as follows: material cutting---flat printing---ink drying and fixing---applying protective film 22---thermoforming---cutting the outer shape---material injection molding.
[0023] 1) Cutting: Cut the roll of PET or PC film into square blocks of the designed size for use in the printing and forming processes.
[0024] 2) Flat printing: Print an ice-blue glacier river texture on a cut PET or PC film.
[0025] 3) Ink drying and fixing: Place the printed PET or PC film in a high-temperature oven to dry, the purpose of which is to fix the IML ink.
[0026] 4) Apply protective film 22: To avoid scratching the surface of the printed plastic film 3 during the punching of positioning holes, sometimes it is necessary to apply a single or double layer of protective film 22.
[0027] 5) Thermoforming (high pressure or copper mold): After heating the printed film, it is formed in a preheated state using a high pressure machine or copper mold.
[0028] 6) Cut off the outer shape: Cut off the waste material of the thermo-pressed three-dimensional film.
[0029] 7) Material injection molding: Place the film that is exactly the same as the three-dimensional shape of the front mold into the front mold and injection mold it to produce the IML finished product.
[0030] The above description is only used to illustrate the technical solution of this utility model and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.
Claims
1. A charging head shell based on IML technology, characterized in that: It includes a resin layer (1), an IML screen printing ink layer (2), and a plastic film (3) that are stacked together from the outside to the inside. The IML screen printing ink layer (2) has a glacial river texture that is displayed through the plastic film (3).
2. The charging head shell based on IML technology according to claim 1, characterized in that: The IML screen printing ink layer (2) includes a printed pattern (21) and a protective film (22).
3. The charging head shell based on IML technology according to claim 2, characterized in that: The protective film (22) is made of PET material.
4. A charging head shell based on IML technology according to claim 2, characterized in that: The printed pattern (21) of the IML screen printing ink layer (2) is a planar pattern and / or a three-dimensional pattern.
5. A charging head shell based on IML technology according to claim 1, characterized in that: The IML screen printing ink layer (2) on the plastic film (3) is fixed by a high-temperature oven.
6. A charging head shell based on IML technology according to claim 1, characterized in that: The plastic film (3) is a PET or PC sheet.
7. A charging head shell based on IML technology according to claim 1, characterized in that: The resin layer (1) is made of ABS, PMMA, or PC.
8. A charging head shell based on IML technology according to claim 1, characterized in that: The resin layer (1) has a thickness of 1mm-2mm, the IML screen printing ink layer (2) has a thickness of 0.1mm-0.3mm, the plastic film (3) has a thickness of 0.1mm-0.3mm, and the total thickness does not exceed 3.0mm.