Automotive interior trim part

Abstract

The utility model relates to the technical field of automobile accessories, in particular to an automobile interior trim part which comprises a base material layer, a bonding layer and a secondary composition bamboo skin layer which are sequentially arranged, the back face of the secondary composition bamboo skin layer is attached to the surface of the base material layer through the bonding layer, and the minimum thickness of the base material layer is 2.0 mm. Compared with the prior art, by adopting the secondary composition bamboo skin layer, the length of bamboo fibers is shortened, the water absorption expansion rate is reduced, the deformation amount of a product is reduced, the deformation problem of the product can be solved by reducing the thickness of the base material layer, and the cost is saved. Meanwhile, different bamboo texture appearances can be achieved by adjusting the splicing structure and the slicing angle of the secondary formula bamboo skin layer, and the requirement for diversity of the appearances is met.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile accessories, in particular to an automobile interior decoration part. Background Art

[0002] At present, bamboo texture automobile interior decoration parts generally use a single-piece bamboo skin layer. The preparation method of the single-piece bamboo skin layer is as follows: first, a plurality of pre-treated long bamboo strips 1 are laid flat or sideways, and then bonded with wet material glue and hot pressed to form a bamboo veneer, such as Figure 1 Then, the bamboo veneer is soaked in water, and the cutter 2 is sliced ​​along the bamboo fiber direction of the bamboo veneer to obtain a slicing material of the desired thickness, which is a primary bamboo skin layer 3, such as Figure 2 shown.

[0003] In actual use, it is found that since the bamboo fibers in the primary bamboo skin layer are continuous in the length direction, generally equal to the length of the primary bamboo skin layer, the bamboo fibers are longer and their water absorption and expansion rate are also larger, and the product deformation after insert injection molding is larger. In order to solve the deformation problem, the primary bamboo skin layer needs to be attached to a substrate layer with a thickness of more than 3mm to provide sufficient reinforcement support for the primary bamboo skin layer.

[0004] In addition to the deformation problem, the single-layer bamboo skin has a single bamboo texture appearance and cannot meet the diverse appearance needs of interior decoration.

[0005] Therefore, it is necessary to design an automotive interior decoration part, which can solve the deformation problem of the product on the basis of reducing the thickness of the substrate layer, and at the same time increase the diversity of the bamboo texture appearance. Summary of the invention

[0006] The purpose of the utility model is to overcome the deficiencies of the prior art and provide an automobile interior decoration part, which solves the problem of product deformation on the basis of reducing the thickness of the substrate layer and increases the diversity of the bamboo texture appearance.

[0007] In order to achieve the above purpose, the utility model is an automobile interior decoration part, comprising a substrate layer, an adhesive layer, and a secondary bamboo skin layer arranged in sequence. The back of the secondary bamboo skin layer is attached to the surface of the substrate layer by the adhesive layer, and the minimum thickness of the substrate layer is 2.0 mm.

[0008] The secondary bamboo skin layer is a planed material of bamboo, and an angle α is provided between the planing direction and the width direction of the bamboo, and the angle α is 0-90 degrees.

[0009] The bamboo square is a glued structure in which a plurality of bamboo skin layers are stacked.

[0010] The primary square bamboo skin layer is a planed material of bamboo veneer, and the planing direction is the same as the bamboo fiber direction of the bamboo veneer. The bamboo veneer is a glued structure of a plurality of long bamboo strips laid flat or sideways.

[0011] There is at least one pair of two adjacent long bamboo strips, and a color difference is arranged between the two adjacent long bamboo strips.

[0012] The thickness of the slicing material of the bamboo veneer is 1-2 mm, and the thickness of the slicing material of the bamboo square is 0.1-0.99 mm.

[0013] The surface of the slicing material of the bamboo veneer and the surface of the slicing material of the bamboo square are provided with a sanding layer minus the thickness of the sheet, and the thickness of the sanding layer is 0.1mm.

[0014] The surface of the secondary bamboo skin layer is provided with a decorative layer, which comprises a paint layer or a foaming layer.

[0015] The adhesive layer comprises non-woven fabric.

[0016] Compared with the prior art, the utility model adopts a secondary bamboo skin layer, shortens the length of bamboo fiber, reduces the water absorption expansion rate, reduces the deformation of the product, reduces the thickness of the base material layer, and solves the problem of product deformation, saving costs. At the same time, by adjusting the splicing structure and sliced ​​angle of the secondary bamboo skin layer, different bamboo texture appearances can be achieved to meet the diverse needs of appearance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the structure and sliced ​​bamboo veneer.

[0018] Figure 2 This is a schematic diagram of the tiling of the bamboo bark layer in a group.

[0019] Figure 3 The utility model is a schematic structural diagram of an automobile interior decoration part.

[0020] Figure 4 It is a top view structure and sliced ​​schematic diagram of the bamboo square of the utility model.

[0021] Figure 5 It is a three-dimensional structure and sliced ​​schematic diagram of the bamboo square of the utility model.

[0022] Figure 6 It is a schematic diagram of paving the secondary square bamboo skin layer of the utility model. DETAILED DESCRIPTION

[0023] The utility model is now further described with reference to the accompanying drawings.

[0024] See also Figure 3The utility model is an automobile interior decoration part, comprising a substrate layer, an adhesive layer, and a secondary bamboo skin layer arranged in sequence. The back of the secondary bamboo skin layer 4 is attached to the surface of the substrate layer 6 by an adhesive layer 5, and the minimum thickness of the substrate layer 6 is 2.0 mm.

[0025] The surface of the secondary bamboo skin layer 4 is provided with a decorative layer 7, and the decorative layer 7 comprises a paint layer or a foaming layer, such as polyester paint or PUR double-material foaming.

[0026] The adhesive layer 5 comprises a non-woven fabric, which is bonded to the secondary bamboo skin layer 4 by hot pressing through adhesive or adhesive paper to obtain the secondary bamboo skin layer 4 of a composite non-woven fabric.

[0027] See also Figure 1 The bamboo veneer is a glued structure of several long bamboo strips 1 laid flat or sideways, and a color difference is set between two adjacent long bamboo strips 1 to provide a differentiated appearance. Figure 2 The primary bamboo skin layer 3 is a slicing material of bamboo veneer, and the slicing direction is the same as the bamboo fiber direction of the bamboo veneer. The width b of the long bamboo strip 1 is 15-30 mm, and the thickness D of the slicing material of the bamboo veneer is 1-2 mm.

[0028] The bamboo square 8 is a glued structure of several layers of first-assembled bamboo skin layers 3 stacked. The preparation method of the bamboo square 8 is as follows: after stacking several layers of first-assembled bamboo skin layers 3, urea-formaldehyde glue is used to combine and cold-press to form the bamboo square 8. Urea-formaldehyde glue includes urea-formaldehyde resin, citric acid, and flour, and the urea-formaldehyde resin: citric acid: flour is 100:4:17, and the roller coating amount of urea-formaldehyde glue is 140-160g / square. The temperature of cold pressing is room temperature, the pressure is 15-25Mpa, and the time is 2-4h. Urea-formaldehyde glue can use different thicknesses and colors; several layers of first-assembled bamboo skin layers 3 can be combined with different categories of first-assembled bamboo skin layers 3, and different categories include different carbonization degrees, different dyeing appearances, different thicknesses and corresponding combination methods to achieve different bamboo texture appearance effects.

[0029] Next, the bamboo square 8 is soaked in water at a temperature of 40-50° C. and a pressure of 3-4 MPa for 3-5 days, during which the water is changed every day.

[0030] Finally, see Figure 4 , Figure 5 The cutter 2 slices the bamboo square 8 vertically, and an angle α is set between the slice direction and the width direction of the bamboo square 8. The angle α is 0-90 degrees, preferably 30-60 degrees. The sliced ​​material of the bamboo square 8 is the secondary bamboo skin layer 4. Different angles α can achieve different bamboo texture appearance effects.

[0031] In this example, the thickness of the primary bamboo skin layer 3 is 1.9 mm, the width b of the long bamboo strip 1 is 20 mm, the angle α is 30°, and the sine value of the angle α is 0.5. The thickness of the secondary bamboo skin layer 4 is 0.4 mm.

[0032] See also Figure 6 The secondary bamboo skin layer 4 is composed of a number of bamboo fibers 9. Since the primary bamboo skin layer 3 is compressed during the process of stacking to form the bamboo square 8, the deformation after compression is about 10%. The width of the bamboo fiber 9 is A = 1.9mm × (1-10%) = 1.71mm. The maximum length of the bamboo fiber 9 is C = 20mm / 0.5 = 40mm, and the maximum cross-sectional area of ​​the bamboo fiber 9 is 0.4mm × 1.71mm = 0.684mm. 2 The length of the bamboo fiber 9 is shortened compared to the long bamboo strip 1 , and the water absorption expansion rate of the bamboo fiber 9 is small, which has little effect on the deformation of the product, thereby reducing the thickness of the substrate layer 6 .

[0033] Before preparing the primary bamboo skin layer 3 and the secondary bamboo skin layer 4, the slicing material of the bamboo veneer and the slicing material of the bamboo square 8 can be double-sided sanded, because sanding will reduce the thickness of the slicing material. In this example, the thickness D of the slicing material of the bamboo veneer is 2mm, and the thickness E of the slicing material of the bamboo square 8 is 0.5mm. The thickness of the sanding layer is 0.1mm. The thickness of the primary bamboo skin layer 3 = 2mm-0.1mm = 1.9mm, and the thickness of the secondary bamboo skin layer 4 = 0.5mm-0.1mm = 0.4mm.

[0034] The utility model adopts a secondary bamboo skin layer, shortens the length of bamboo fiber, reduces the water absorption expansion rate, reduces the deformation of the product, reduces the thickness of the base material layer, and solves the problem of product deformation, saving costs. At the same time, by adjusting the splicing structure and sliced ​​angle of the secondary bamboo skin layer, different bamboo texture appearances can be achieved to meet the diverse needs of appearance.

Claims

1. An automotive interior component, characterized in that: It comprises a base material layer, an adhesive layer, and a secondary bamboo skin layer which are arranged in sequence, wherein the back side of the secondary bamboo skin layer (4) is attached to the surface of the base material layer (6) by an adhesive layer (5), and the minimum thickness of the base material layer (6) is 2.0 mm; The secondary bamboo skin layer (4) is a planed material of bamboo (8), and an angle α is provided between the planing direction and the width direction of the bamboo (8), and the angle α is 0-90 degrees; The bamboo square (8) is a glued structure formed by stacking a plurality of layers of bamboo skin layers (3) in a single assembly; The primary bamboo skin layer (3) is a planed material of a bamboo veneer, and the planing direction is the same as the bamboo fiber direction of the bamboo veneer. The bamboo veneer is a glued structure of a plurality of long bamboo strips (1) laid flat or sideways.

2. The automotive interior component according to claim 1, characterized in that: There is at least one pair of two adjacent long bamboo strips (1), and a color difference is provided between the two adjacent long bamboo strips (1).

3. The automotive interior decoration part according to claim 1, characterized in that: The thickness of the slicing material of the bamboo veneer is 1-2 mm, and the thickness of the slicing material of the bamboo square (8) is 0.1-0.99 mm.

4. The automotive interior decoration part according to claim 3, characterized in that: The surface of the slicing material of the bamboo veneer and the surface of the slicing material of the bamboo square (8) are provided with a sanding layer minus the thickness of the sheet, and the thickness of the sanding layer is 0.1 mm.

5. The automotive interior decoration part according to claim 1, characterized in that: The surface of the secondary bamboo skin layer (4) is provided with a decorative layer (7), and the decorative layer (7) comprises a paint layer or a foaming layer.

6. The automotive interior decoration component according to claim 1, characterized in that: The adhesive layer (5) comprises non-woven fabric.

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