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KR-20260064843-A - COMPOSITE FOR VEHICLE INTERIOR MATERIAL, AND MANUFACTURING METHOD THEREOF

KR20260064843AKR 20260064843 AKR20260064843 AKR 20260064843AKR-20260064843-A

Abstract

A composite for automotive interior materials and a method for manufacturing the same are disclosed. The composite for automotive interior materials according to the present embodiment comprises a fabric layer including a first fiber and a second fiber; and a polyurethane foam layer laminated on the lower part of the fabric layer, wherein the first fiber may include a plant-based natural fiber and the second fiber may include a recycled plastic fiber.

Inventors

  • 김명주

Assignees

  • 주식회사 서연이화

Dates

Publication Date
20260508
Application Date
20241029

Claims (12)

  1. A fabric layer comprising a first fiber and a second fiber; and It includes a polyurethane foam layer laminated on the lower part of the fabric layer, and The first fiber above includes plant natural fibers, and The above second fiber is a composite for automotive interior materials comprising recycled plastic fibers.
  2. In paragraph 1, The above fabric layer is a composite for automotive interior materials having the first fiber as the warp and the second fiber as the weft.
  3. In paragraph 1, A composite for automotive interior materials comprising 5 to 40 parts by weight of the plant natural fiber with respect to 100 parts by weight of the first fiber.
  4. In paragraph 3, The above first fiber is A composite for automotive interior materials comprising 60 to 95 parts by weight of a thermoplastic general-purpose plastic fiber with respect to 100 parts by weight of the first fiber.
  5. In paragraph 1, The above recycled plastic fiber is a composite for automotive interior materials that is a short fiber.
  6. In paragraph 1, The above-mentioned plant natural fiber is a composite for automotive interior materials obtained from one or more plant natural materials selected from the group consisting of flax, hemp, jute, kenaf, abaca, bamboo, coir, pineapple, ramie, sisal, henequen, hemp, rice straw, rice husk, wood powder, and green tea.
  7. In paragraph 1, The above recycled plastic fiber is a composite for automotive interior materials comprising recycled PET (polyethylene terephthalate) fibers.
  8. a) a step of forming a fabric layer using a first fiber and a second fiber; and b) a step of forming a polyurethane foam layer on the lower part of the fabric layer, and A method for manufacturing a composite for automotive interior materials in which the first fiber comprises a plant natural fiber and the second fiber comprises a recycled plastic fiber.
  9. In paragraph 8, Step a) above a1) a step of manufacturing a first yarn by spinning the first fiber and manufacturing a second yarn by spinning the second fiber, and a2) A method for manufacturing a composite for automotive interior materials comprising the step of weaving the first yarn and the second yarn manufactured above.
  10. In Paragraph 9, The above step a2) is a method for manufacturing a composite for automotive interior materials, wherein the first yarn is woven as the warp and the second yarn is woven as the weft.
  11. In Paragraph 9, A method for manufacturing a composite for automotive interior materials, further comprising the step of heat-correcting the first yarn and the second yarn at 80 to 150°C before performing the above step a2).
  12. In paragraph 8, The above step b) is a method for manufacturing a composite for automotive interior materials, performed by hot pressing.

Description

Composite for vehicle interior material and manufacturing method thereof The present invention relates to a composite for automotive interior materials and a method for manufacturing the same, and more specifically, to a composite for automotive interior materials capable of reducing carbon emissions by using eco-friendly materials and a method for manufacturing the same. Automotive interior materials cover a relatively large area of the vehicle and form a complex structure involving the assembly and attachment of various parts due to the trend toward component modularization; therefore, shape stability or dimensional stability of the material is essential. Materials such as plastic fibers are mainly used as surface materials to cover these automotive interior materials, considering heat resistance and mechanical properties, but they cause environmental pollution during production and disposal processes and pose problems such as increased carbon emissions. Accordingly, eco-friendly materials utilizing natural fibers have recently been proposed, but their use as automotive interior materials is limited due to insufficient performance in terms of strength and durability. Accordingly, there is a need for technology that can contribute to carbon neutrality by utilizing eco-friendly materials while securing basic physical properties for automotive interior materials. FIG. 1 is a drawing illustrating the structure of a composite for automotive interior materials in one embodiment of the present invention. The following describes the embodiments of the present invention in detail with reference to the accompanying drawings. The following embodiments are presented to sufficiently convey the concept of the present invention to those skilled in the art to which the present invention pertains. The present invention is not limited to the embodiments presented herein and may be embodied in other forms. In order to clarify the present invention, the drawings may omit the illustration of parts unrelated to the description and may slightly exaggerate the size of components to aid understanding. The composite (10) for automotive interior materials according to the present invention is intended to be applied to automotive interior materials that are completed by a process of wrapping the material after pressing it onto the surface of an injection-molded hard substrate. In a preferred example, it can be applied to automotive interior materials that require a surface material wrapping process, such as an armrest, center trim, and door trim. FIG. 1 is a drawing illustrating the structure of a composite for automotive interior materials in one embodiment of the present invention. Referring to FIG. 1, the automotive interior material (10) according to the present invention is configured to include a fabric layer (100) and a polyurethane foam layer (200) laminated on the lower part of the fabric layer (100). The fabric layer (100) includes a first fiber and a second fiber, and the first fiber and the second fiber may include fibers of different types. The first fiber includes plant natural fibers. Plant natural fibers may be fibers obtained from one or more plant natural materials selected from the group consisting of flax, hemp, jute, kenaf, abaca, bamboo, coir, pineapple, ramie, sisal, henequen, hemp, rice straw, rice husk, wood flour, and green tea. The plant natural fiber may be a long fiber with a length of 30 to 100 mm, preferably 50 to 80 mm, obtained from the plant natural material described above. With respect to 100 parts by weight of the first fiber, 5 to 40 parts by weight of the above-described plant natural fiber, preferably 10 to 40 parts by weight, and more preferably 15 to 30 parts by weight may be included. By satisfying the above-described conditions, not only is the carbon reduction effect resulting from the use of plant natural fiber, which is an eco-friendly material, achieved, but the deterioration of basic physical properties as an automotive interior material can also be prevented. The first fiber may further include thermoplastic general-purpose plastic fibers in addition to the plant natural fibers described above. Thermoplastic general-purpose plastic fibers are fibers obtained through a melt spinning process of plastic particles or flakes, and may include one or more selected from the group consisting of PE (polyethylene) fibers, PP (polypropylene) fibers, PS (polystyrene) fibers, PET (polyethylene terephthalate) fibers, and PVC (polyvinyl-chloride) fibers. The thermoplastic general-purpose plastic fiber may be a long fiber with a length of 30 to 100 mm, preferably 50 to 80 mm. With respect to 100 parts by weight of the first fiber, the above-described thermoplastic general-purpose plastic fiber may be included in 60 to 95 parts by weight, preferably 65 to 90 parts by weight, and more preferably 70 to 90 parts by weight. A fabric layer containing such first fiber is advantageous for achieving excellent