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CN-121973492-A - Manufacturing process of automobile headrest LOGO capable of achieving luminous display and hiding effect

CN121973492ACN 121973492 ACN121973492 ACN 121973492ACN-121973492-A

Abstract

The invention provides a manufacturing process of an automobile headrest LOGO with luminous display and hiding effect, which comprises the steps of taking a light-transmitting epidermis as a base material, carrying out O2 and Ar mixed plasma cleaning, corona and base coating treatment, spraying insulating waterproof varnish, drying, printing high-transmittance nano silver wire or PEDOT-PSS composite ink for the first time, spraying PEDOT-PSS aqueous solution for the second time to form a transparent conductive motor, printing inorganic fluorescent powder ink to form LOGO patterns, carrying out lamination printing on the insulating ink for the second time to form an insulating layer, printing conductive silver paste/FPC aluminum paste as a back electrode, spraying SiOx inorganic barrier layer, coating a UV cured organic buffer layer, carrying out room temperature curing silver paste to attach a film to the electrode, and carrying out cutting skin sewing assembly after testing to complete manufacturing. The invention realizes the functions of full power-off hiding and uniform power-on luminescence of the headrest LOGO, improves the LOGO strength, the insulating waterproof performance and the service life, and meets the requirements of high-end and intelligent production of automotive interiors.

Inventors

  • ZHANG DAN
  • WANG JIAYI
  • FENG LEI

Assignees

  • 重庆宏汇汽车部件有限公司

Dates

Publication Date
20260505
Application Date
20260323

Claims (10)

  1. 1. The manufacturing process of the automobile headrest LOGO capable of achieving luminous display and having a hiding effect is characterized by comprising the following steps of: S1, epidermis selection: The light-transmitting epidermis is used as a bearing substrate of LOGO; S2, surface pretreatment: 1) Plasma cleaning, namely cleaning the inner surface of the light-transmitting epidermis by using mixed plasma of O 2 and Ar; 2) Corona treatment, namely cleaning the inner surface of the light-transmitting epidermis and then carrying out corona treatment; 3) The bottom coating treatment, namely, the inner surface of the light-transmitting epidermis is subjected to bottom coating treatment, a layer of transparent, insulating and waterproof varnish is sprayed, and the light-transmitting epidermis is dried after the spraying is finished; S3, printing a transparent conductive electrode: The primary printing, namely selecting high-permeability nano silver wire conductive ink or PEDOT/PSS composite conductive ink, forming a conductive electrode on the inner surface of the pretreated light-transmitting epidermis in a printing or spraying mode, and performing curing and drying treatment after finishing the operation to obtain a primary electrode, wherein the sheet resistance of the primary electrode is controlled to be 50-100 omega/≡; Secondary spraying, namely spraying a PEDOT (polyether-ether-ketone) -PSS aqueous solution on the primary electrode on the basis of primary printing, and solidifying and drying again to form a transparent conductive electrode; S4, printing an inorganic luminescent material: the preparation of the ink, namely selecting inorganic fluorescent powder ink, and adding a dispersing agent before printing to avoid the aggregation of fluorescent powder; LOGO manufacturing, namely manufacturing a required LOGO pattern on the transparent conductive electrode by adopting a spraying or screen printing mode, and curing and drying after manufacturing so as to enable the inorganic luminescent material to be attached to the transparent conductive electrode; s5, printing an insulating layer: Selecting insulating ink with the particle size of 20-50nm and the ink solid content of 15-20%, performing lamination printing on an inorganic luminescent material twice, and performing curing and drying after each printing is completed to form an insulating layer; s6, back electrode printing: Selecting conductive silver paste or aluminum paste, wherein the solid content is 60-70%, the sheet resistance is less than or equal to 10Ω/≡, printing on the insulating layer, and curing and drying after printing is finished to form a back electrode; s7, preparing a packaging layer: Spraying an SiOx inorganic barrier layer on the back electrode, and curing and drying after spraying; Spraying a UV curing organic buffer layer on the SiOx inorganic barrier layer, and curing by ultraviolet rays; S8, wiring treatment: using room temperature solidified silver paste as an adhesive, and pasting an FPC film of a welding wire with a transparent conductive electrode and a back electrode of a light-transmitting epidermis to realize circuit connection; s9, electrifying test: After the steps are finished, carrying out an electrifying function test, testing whether the luminous brightness of LOGO meets the expected standard, detecting the luminous brightness of different areas, ensuring that the whole LOGO emits light uniformly, and the brightness meets the design requirement; S10, assembling: According to the design size of the headrest, the tested transparent epidermis is cut into pieces, then sewing operation is carried out, the pieces are sewn with other parts of the headrest, the inner surface of the transparent epidermis faces inwards when the pieces are sewn, and the outer surface of the pieces is exposed outside, so that the luminous headrest is manufactured finally.
  2. 2. The process for manufacturing the automobile headrest LOGO with luminous display and hiding effect according to claim 1, wherein in step S1, a light-transmitting surface skin with light transmittance more than or equal to 85%, haze more than or equal to 5%, thickness more than or equal to 0.5mm, inner surface flatness Ra less than or equal to 0.3 μm and heat resistance Tg more than or equal to 85 ℃ is selected as a bearing substrate of LOGO.
  3. 3. The process for manufacturing the automobile headrest LOGO with luminous display and hiding effect according to claim 2, wherein the transparent skin is made of PU, TPU or PVC.
  4. 4. The manufacturing process of the automobile headrest LOGO with the luminous display and the hiding effect is characterized in that in the step S2, a plasma cleaning machine is adopted for plasma cleaning, the volume flow ratio of O 2 to Ar is 3:1, the equipment power is set to 600-800W, the treatment time is 40-60S, a corona treatment machine is adopted for corona treatment, the working voltage is set to 3500-4500V, the treatment speed is 1-2m/min, the thickness of varnish after the bottom coating treatment is controlled to 1-2 mu m, and the automobile headrest LOGO is dried for 5-8min in an environment at 80 ℃ after the spraying is finished.
  5. 5. The manufacturing process of the automobile headrest LOGO with the luminous display and the hiding effect, which is disclosed in claim 1, is characterized in that in step S3, PEDOT-PSS composite conductive ink with the light transmittance more than or equal to 90% is adopted for primary printing.
  6. 6. The process for manufacturing the automobile headrest LOGO with luminous display and hiding effect according to claim 1, wherein in step S4, polyethylene glycol is adopted as the dispersing agent.
  7. 7. The manufacturing process of the automobile headrest LOGO with the luminous display and the hiding effect, which is disclosed in claim 1, is characterized in that in step S4, LOGO is manufactured by adopting a spraying mode, the viscosity is controlled to be 10-20mPa, S and the thickness is controlled to be 5-15um during spraying.
  8. 8. The manufacturing process of the automobile headrest LOGO with the luminous display and the hiding effect, which is disclosed in claim 1, is characterized in that in step S4, LOGO manufacturing is performed by adopting a screen printing mode, the viscosity is controlled to be 25-35mPa, S and the thickness is controlled to be 10-50 um during screen printing.
  9. 9. The manufacturing process of the automobile headrest LOGO with luminous display and hiding effect according to claim 1, wherein in step S5, siO 2 nano-particle ink, al 2 O 3 nano-ink or barium titanate nano-ink material is selected as insulating ink, the curing temperature is controlled at 80-90 ℃, and the insulation resistance after curing is controlled at more than or equal to 10 12 Ω & cm.
  10. 10. The manufacturing process of the automobile headrest LOGO with luminous display and hiding effect according to claim 1, wherein in step S6, the curing temperature is controlled to be less than or equal to 90 ℃ and the curing time is 10-15min.

Description

Manufacturing process of automobile headrest LOGO capable of achieving luminous display and hiding effect Technical Field The invention relates to the technical field of automobile interior trim part processing, in particular to a manufacturing process of an automobile headrest LOGO capable of achieving luminous display and hiding effect. Background In the automotive interior field, headrest as a part that is in direct contact with the driver and the occupant and is visually prominent, the presentation effect of the LOGO thereof has an important influence on the quality of the finished automobile interior and the user experience. However, the current conventional headrest LOGO process suffers from a number of disadvantages that are not negligible. From personalization and design dimension reviews, customization thresholds are high and few choices are a prominent issue. The prior art is limited by technology and cost, and is difficult to meet the requirements of users for customizing low-cost and small-batch complex patterns. In practice, users often can only select from a limited number of "letter embroidery" or "preset icons", and the actual dedicated design service is extremely deficient. Furthermore, the design of the headrest LOGO is often disjointed from the overall theme of the vehicle interior trim. Whether the motion style emphasizes the vitality, the luxury style pursues the delicacy and elegance, or the future sense of the technological style display, the headrest LOGO can not be well used as the extension of the interior design language, is abrupt and uncoordinated, and breaks the harmonious aesthetic feeling of the whole interior. In terms of process technology, the traditional process is lagged, so that the texture and the durability are poor. Taking embroidery technology as an example, thread ends are easy to generate in actual manufacture, the backing paper on the back of the headrest is obvious, the edge of the pattern has step feel, the pattern is not smooth enough, and the expressive force for complex gradient colors is limited. The embossing and thermoprinting process can make the pattern surface smooth, but lacks third dimension and feel, in the long-term use process, because of being influenced by factors such as friction, illumination, the local wearing and tearing, fading and even cracking and falling off are very easy to occur, and then the bottom layer material is exposed, and the attractiveness and the service life of the headrest are seriously influenced. Moreover, all the traditional processes generally have the problem that bright colors are difficult to express on dark fabrics, the effect realized on special materials such as chamois leather, high-grade Nappa leather and the like is poor, even the base material is possibly damaged, and the diversified application of the headrest on different materials is limited. In terms of aesthetic value, the traditional headrest LOGO design is old, the common design mostly follows the old aesthetic concept, and elements such as metallic colors, thick frames and the like are excessively used, so that the design trend is not in good agreement with the current popular brief and flattened design trend. Meanwhile, rough process details, such as embroidery burrs, thermoprinted halation and the like, directly bring cheap feeling to people, so that the headrest cannot become bright spots in the interior trim, but becomes a short plate for reducing the quality of the interior trim. The traditional LOGO technology has serious defects in the aspects of functionality, environmental protection and intelligent integration. The process area cannot be combined with any electronic function, for example, the functions of hidden touch control, backlight or light transmission display and the like cannot be integrated in the LOGO area, and the requirements of modern consumers on intelligent experience of automobiles are difficult to meet. In the aspects of environmental protection and health, part of hot stamping materials can release volatile organic compounds to cause adverse effect on the air quality in a vehicle, and the multi-layer substrate of complex embroidery can also influence the recyclability of the materials, so that the environment-friendly material does not accord with the current environmental protection concept. In addition, the traditional LOGO is completely static, cannot realize any dynamic interaction effects such as color change, information display and the like, and is especially backward under the background that an intelligent cabin becomes a development trend. In summary, the conventional headrest LOGO process cannot meet the requirements of the automotive industry for improving the quality of the interior trim and increasing diversification and intellectualization of users in various key aspects, and is a main bottleneck restricting the improvement of the quality and aesthetic feeling of the headrest, and an innovative process technol