Skin structure and vehicle ornament

Abstract

The utility model relates to a skin structure and a vehicle ornament. The skin structure comprises: a base cloth layer (40); the base cloth layer (40) comprises bamboo fibers and is arranged above the base cloth layer (40) in an overlapped mode in the observation direction, the bamboo fibers are evenly distributed in the resin surface layer (20), and the bamboo fibers are particles with the mesh number ranging from 20 to 5000. The appearance of the skin structure has the bamboo fiber flowing characteristic, the touch hand feeling is good, the unique bamboo fragrance is achieved, and the skin structure is low-carbon and environmentally friendly.

Description

Technical Field

[0001] This utility model relates to the field of vehicle parts technology. More specifically, this utility model relates to a skin structure for vehicle trim, and to vehicle trim including such a skin structure. Background Technology

[0002] Vehicle interior trim refers to the exterior decorative parts inside a vehicle. Currently, the artificial skin structure of existing vehicle interior trim typically only displays leather texture and color. With technological advancements and consumers' increasing demands for the sensory experience of vehicle trim, manufacturers are paying more and more attention to factors such as the appearance, feel, odor, and even compliance with low-carbon and environmentally friendly principles of the skin structure of vehicle trim. Utility Model Content

[0003] The purpose of this invention is to provide a skin structure for vehicle trim, which has the appearance of bamboo fiber with flowing characteristics, a good tactile feel, a unique bamboo fragrance, and is low-carbon and environmentally friendly.

[0004] To this end, a first aspect of the present invention provides a skin structure comprising a base fabric layer and a resin surface layer comprising bamboo fibers and stacked on top of the base fabric layer along the viewing direction, wherein the bamboo fibers are uniformly distributed in the resin surface layer and the bamboo fibers are particles with a mesh size between 20 and 5000.

[0005] Based on the above technical concept, the present invention may further include any one or more of the following optional forms.

[0006] In some alternative forms, the base fabric layer comprises: a base fabric, which is a nonwoven fabric or polyester fabric; and bamboo fiber or bamboo pulp, which is uniformly distributed in the base fabric.

[0007] In some alternative forms, the resin surface layer is an aqueous polycarbonate layer, a polyvinyl chloride layer, or a thermoplastic polyolefin layer.

[0008] In some alternative forms, the skin structure further includes a surface treatment layer stacked on the side of the resin surface layer away from the base fabric layer.

[0009] In some alternative forms, the surface treatment layer is a polyurethane layer, a polycarbonate layer, or a polysiloxane layer.

[0010] In some alternative forms, the surface treatment layer comprises bamboo fibers uniformly distributed therein.

[0011] In some alternative forms, the skin structure further includes a soft touch layer stacked between the resin surface layer and the base fabric layer.

[0012] In some alternative forms, the soft touch layer comprises bamboo fibers uniformly distributed therein.

[0013] In some alternative forms, the soft touch layer is cured onto the resin surface layer by a scraping process, and the base fabric layer is bonded to the soft touch layer.

[0014] The second aspect of this utility model provides a vehicle trim piece, which includes a skin structure according to the first aspect of this utility model. The vehicle trim piece is a door panel, dashboard, sub-dashboard, seat trim, door frame trim, headliner trim, or rear compartment trim.

[0015] Compared to existing artificial skin structures for vehicle trim on the market, the skin structure according to this utility model has several beneficial technical effects, especially: by arranging bamboo fibers at least in the resin surface layer, the skin structure has the appearance of bamboo fiber flow characteristics, a dry and non-sticky skin-friendly feel when touched, a unique bamboo fragrance, and almost no volatile harmful substances; in addition, by using bamboo instead of plastic, the skin structure can be made lightweight, reducing dependence on petroleum and reducing carbon emissions; understandably, bamboo culture is a unique cultural imprint of my country, allowing vehicle trim to exude the unique charm of bamboo elements from the inside out, which is both a natural integration and a manifestation of confident culture, and my country has very rich bamboo resources, making the source of raw materials stable. Attached Figure Description

[0016] Other features and advantages of this invention will be better understood through the following detailed description of preferred embodiments in conjunction with the accompanying drawings. In the drawings, the same reference numerals denote the same or similar parts.

[0017] Figure 1 This is a schematic diagram of a vehicle including vehicle trim according to an embodiment of the present utility model.

[0018] Figure 2 This is a schematic diagram of one embodiment of the skin structure according to the present invention.

[0019] Figure 3 yes Figure 2 A schematic diagram of a method for preparing the epidermal structure in [the text].

[0020] The elements in the accompanying drawings are shown for simplicity and clarity and are not necessarily drawn to precise scale or shape. It should be understood that the drawings are not only used for explanation and illustration of the present invention, but also, where necessary, to limit the present invention. Detailed Implementation

[0021] The implementation and use of specific embodiments are discussed in detail below. However, it should be understood that the specific embodiments discussed are merely illustrative of particular ways of implementing and using this utility model, and are not intended to limit the scope of this utility model.

[0022] In this paper, when describing the structural position of each component, directional terms such as "up" and "down" are defined with reference to the observer's viewing direction. For example, "above" of a structural layer means the direction in which the structural layer faces the observer, and "below" of a structural layer means the direction in which the structural layer faces away from the observer.

[0023] It is understood that the application of the skin structure according to this utility model to vehicle trim parts is not limiting. For example... Figure 1 As shown, the skin structure according to this utility model can be applied to the door panel DP of a vehicle V, for example, as the covering skin for the upper body, trim panel, armrest, and other parts of the door panel DP. It can also be applied to the instrument panel IP or sub-instrument panel CS, for example, as the covering skin for the center trim piece, visor trim panel of the instrument panel IP, or the armrest, side panel, and other parts of the sub-instrument panel CS. Furthermore, it can be applied to various vehicle trim pieces such as seat trim panels ST, door frame trim panels DFT, headliner trim panels, and rear compartment trim panels. In fact, the skin structure according to this utility model can be applied to any trim piece in a vehicle V that requires covering with an artificial skin to ensure its aesthetics.

[0024] like Figure 2 As shown, according to one embodiment, the skin structure of the present invention includes, in order from top to bottom along the observer's viewing direction, the following layers: an optional surface treatment layer 10, a resin surface layer 20, an optional soft touch layer 30, and a base fabric layer 40.

[0025] The surface treatment layer 10 is, for example, a conventional polyurethane layer, preferably a silicone-modified polyurethane layer, or a polycarbonate layer or a polysiloxane layer, and preferably includes bamboo fibers that are substantially uniformly distributed therein. In this invention, the bamboo fibers are powdered particles with a mesh size between 20 and 5000, and are added to each structural layer according to a certain mass fraction. "Mass fraction" as used herein refers to the ratio of the mass of the bamboo fibers to the total solid mass of the structural layer containing the bamboo fibers. Furthermore, "uniform distribution" as used herein refers to the appearance of the bamboo fibers being substantially uniformly distributed throughout the structural layer, rather than being completely uniform in every local area of ​​the structural layer. In the surface treatment layer 10, the mass fraction of the bamboo fibers can be 1% to 80%, preferably 20% to 30%, for example, about 25%, obtained by adding this proportion of bamboo fibers to a surface treatment liquid, mixing them uniformly, and then performing surface treatment. The specific preparation method will be described in detail below.

[0026] The resin topcoat 20 is preferably an aqueous polycarbonate layer, but may also be a polyvinyl chloride (PVC) layer or a thermoplastic polyolefin (TPO) layer, and includes bamboo fibers that are substantially uniformly distributed therein. In the resin topcoat 20, the mass fraction of bamboo fibers can be 1% to 80%, preferably 25% to 35%, for example, about 30%, and the topcoat is applied by mixing the bamboo fibers in the resin in this proportion evenly.

[0027] The soft touch layer 30 is, for example, a foamed layer comprising component A and component B, and preferably comprises bamboo fibers that are substantially uniformly distributed therein. Component A is, for example, a polyether polyol with added bamboo fibers, and component B is, for example, an isocyanate. In the soft touch layer 30, the mass fraction of bamboo fibers can be 1% to 50%, preferably 1% to 11%, for example, about 6%, by adding this proportion of bamboo fibers to the foaming material for topcoat.

[0028] The base fabric layer 40 preferably comprises a base fabric and bamboo fibers or bamboo pulp generally uniformly distributed in the base fabric, such as a non-woven fabric or polyester fabric. In the base fabric layer 40 used for bonding, the mass fraction of bamboo fibers or bamboo pulp can be 1% to 50%, preferably 20% to 30%, for example, about 25%.

[0029] It is understood that the materials of each structural layer and the specific mass fraction of bamboo fiber or bamboo pulp listed above are merely some preferred embodiments, and this utility model does not impose any limitations on them. Under the inventive concept of this utility model, those skilled in the art can make various changes, including selecting other suitable raw materials for each structural layer, selecting appropriate mass fractions of bamboo fiber or bamboo pulp for each structural layer to obtain the desired appearance, feel, smell, and other effects through the combination of these layers, and selecting other suitable preparation processes for each structural layer, such as replacing surface coating / coating with calendering.

[0030] The following is combined Figure 3 Briefly describe one method for preparing the aforementioned skin structure.

[0031] like Figure 3 As shown, firstly, the mixture of resin, pigment, bamboo fiber powder, and additives is uniformly mixed and applied to release paper, then cured in an oven to form the first surface layer. Next, the mixture is applied a second time to the first surface layer and cured in an oven to form the second surface layer. Therefore, these two applications of coating and heating form the resin surface layer 20 of the skin structure. It is understood that the number of coating applications is not limited and can be determined according to actual needs.

[0032] Then, component A, containing bamboo fiber powder, is uniformly mixed with component B and foamed. The resulting foam is then coated (i.e., solvent-free) onto the resin surface layer 20 and cured in an oven to form the soft contact layer 30 of the skin structure. Next, a base fabric layer 40 containing bamboo fiber powder or bamboo pulp is bonded to the soft contact layer 30 and cured in an oven. Finally, the release paper is removed, yielding a semi-finished product consisting of the resin surface layer 20, the soft contact layer 30, and the base fabric layer 40.

[0033] Finally, after flipping the semi-finished product, a surface treatment liquid containing bamboo fiber powder is coated onto the resin surface layer 20, and then cured by heating in an oven to form the surface treatment layer 10 of the skin structure, thus completing the preparation of the entire finished product. Therefore, it can be understood that this skin structure can be prepared using a simple and low-cost coating and curing process.

[0034] By incorporating bamboo fiber, the surface structure acquires the fluid properties of bamboo fiber, providing a dry, non-sticky, and skin-friendly feel. It also possesses a unique bamboo aroma and contains virtually no volatile harmful substances. Furthermore, by replacing plastic with bamboo, the surface structure can be made lightweight, reducing reliance on petroleum and decreasing carbon emissions.

[0035] The following are the results of odor and volatile organic compound (VOC) tests conducted on a conventional skin structure without bamboo fiber powder and a skin structure according to this invention with bamboo fiber powder.

[0036] In the following sets of experiments, Scheme 1 and Scheme 2 used skin structures produced on the same production line and on the same day for comparison. The only difference was whether bamboo fiber powder was added to each structural layer. Scheme 1's skin structure did not include bamboo fiber powder in any of its structural layers, while in Scheme 2's skin structure, the mass fractions of bamboo fiber powder in the surface treatment layer 10, resin surface layer 20, soft touch layer 30, and base fabric layer 40 were 25% ± 5%, 30% ± 5%, 6% ± 5%, and 25% ± 5%, respectively. The experimental methods for Scheme 1 and Scheme 2 were identical. In the table below, "ND" indicates Not Detected.

[0037] Experiment 1: GCMS (Gas Chromatography-Mass Spectrometry) Testing

[0038]

[0039] Sampling: For the outer skin of both Scheme 1 and Scheme 2, use a 10L bag to sample 250cm. 2 Heat to 80°C and maintain for 2 hours; for bamboo fiber powder, take a 10g sample using a 10L bag, heat to 80°C and maintain for 2 hours.

[0040] Analytical methods: Volatile organic compounds were collected using Tenax-TA sampling tubes and analyzed using thermal desorption-gas chromatography-mass spectrometry; the emission amount of the epidermis was expressed as micrograms emitted per square meter, and the emission amount of bamboo fiber powder was expressed as micrograms emitted per kilogram.

[0041] Test environment: room temperature (23±2)℃, relative humidity (50±5)%.

[0042] Test results comparison: The volatiles of bamboo fiber powder contained the above-mentioned 7 aldehydes with specific odors. The volatiles of the ordinary skin structure without bamboo fiber powder in Scheme 1 did not contain these 7 aldehydes. However, the volatiles of the skin structure with bamboo fiber powder in Scheme 2 contained 5 of the 7 aldehydes. This result indicates that the specific fragrance of the skin structure with bamboo fiber powder in Scheme 2 comes from the added bamboo fiber powder.

[0043] Experiment 2: Odor Test

[0044] evaluators A B C D E average Odor type Test results of Option 1 3.5 4.0 4.0 3.5 3.5 3.7 amine odor Test results of Scheme 2 3.5 3.0 3.0 3.5 3.5 3.3 Bamboo flavor

[0045] Sampling: The test sample size was 200 cm2, using a 1L odor bottle. The sample was heated to 80°C and held for 2 hours, then cooled to 60°C and evaluated by 5 evaluators.

[0046] Evaluation criteria: Odor evaluation criteria are divided into 1 to 6 levels (Level 1: No odor; Level 2: Slight odor, but no interfering odor; Level 3: Obvious odor, but no interfering odor; Level 4: Interfering odor; Level 5: Strongly interfering odor; Level 6: Unbearable odor). If a situation occurs between two evaluation levels, a half-level evaluation is allowed.

[0047] Test results comparison: Scheme 1, with its ordinary skin structure without bamboo fiber powder, emitted an amine odor, with an average rating of 3.7 from 5 evaluators. In contrast, Scheme 2, with its skin structure containing bamboo fiber powder, emitted a bamboo odor, with an average rating of 3.3 from 5 evaluators. This result indicates that the odor of Scheme 2, with its skin structure containing bamboo fiber powder, is weaker than that of Scheme 1, with its ordinary skin structure without bamboo fiber powder, and it does not have a significant interfering odor.

[0048] Experiment 3: VOC (Volatile Organic Compounds) Test

[0049] Epidermal type benzene Toluene Ethylbenzene xylene styrene formaldehyde Acetaldehyde acrolein Option 1 ND 0.013 ND ND ND ND ND ND Option 2 ND ND ND ND ND ND ND ND

[0050] Sampling: Use a 10L bag to take samples, with a sample size of 80mm*100mm, heat to 40℃ and keep for 2 hours.

[0051] Test results comparison: In Scheme 1, the volatile matter in the ordinary epidermal structure without bamboo fiber powder was detected at 0.013 mg / m³. 3 The results showed that the natural bamboo fiber in the epidermal structure of Scheme 2 had an adsorption effect on organic volatiles, which is more beneficial to human health. The results also showed that the natural bamboo fiber in the epidermal structure of Scheme 2 has an adsorption effect on organic volatiles, which is more beneficial to human health.

[0052] The technical content and features of this utility model have been disclosed above. However, it is understood that under the creative concept of this utility model, those skilled in the art can make various changes and improvements to the above-disclosed concept, but all of them fall within the protection scope of this utility model.

[0053] The above description of the embodiments is illustrative and not restrictive, and the scope of protection of this utility model is determined by the claims.

Claims

1. A vehicle trim component, comprising a skin structure, characterized in that, The epidermal structure includes: Base fabric layer (40); A resin surface layer (20) is stacked on top of the base fabric layer (40) along the viewing direction; and Bamboo fiber, which is uniformly distributed in the resin surface layer (20).

2. The vehicle trim piece according to claim 1, characterized in that, The base fabric layer (40) includes: The base fabric, wherein the base fabric is a nonwoven fabric or a polyester fabric; and Bamboo fiber or bamboo pulp, wherein the bamboo fiber or bamboo pulp is uniformly distributed in the base fabric.

3. The vehicle trim piece according to claim 1, characterized in that, The resin surface layer (20) is a water-based polycarbonate layer, a polyvinyl chloride layer, or a thermoplastic polyolefin layer.

4. The vehicle trim piece according to claim 1, characterized in that, The skin structure also includes a surface treatment layer (10) stacked on the side of the resin surface layer (20) away from the base fabric layer (40).

5. The vehicle trim piece according to claim 4, characterized in that, The surface treatment layer (10) is a polyurethane layer, a polycarbonate layer, or a polysiloxane layer.

6. The vehicle trim piece according to claim 4, characterized in that, The surface treatment layer (10) comprises bamboo fibers uniformly distributed therein.

7. The vehicle trim piece according to claim 1, characterized in that, The skin structure also includes a soft touch layer (30) stacked between the resin surface layer (20) and the base fabric layer (40).

8. The vehicle trim piece according to claim 7, characterized in that, The soft touch layer (30) comprises bamboo fibers evenly distributed therein.

9. The vehicle trim piece according to claim 7, characterized in that, The soft touch layer (30) is cured onto the resin surface layer (20) by scraping, and the base fabric layer (40) is bonded to the soft touch layer (30).

10. The vehicle trim piece according to any one of claims 1 to 9, characterized in that, The vehicle trim includes door panels, dashboards, secondary dashboards, seat trims, door frame trims, headliner trims, or rear compartment trims.

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