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JP-7857154-B2 - Decorative fiber sheet

JP7857154B2JP 7857154 B2JP7857154 B2JP 7857154B2JP-7857154-B2

Inventors

  • 木野 正明

Assignees

  • 積水化学工業株式会社

Dates

Publication Date
20260512
Application Date
20220511

Claims (12)

  1. A decorative fiber sheet comprising a fiber base material and a metal layer, The aforementioned metal layer includes a mixed layer containing aluminum and titanium , The aluminum content in the mixed layer is 5% by mass or more and 85% by mass or less relative to the total mass of aluminum and titanium in 100% by mass. The total content of aluminum and titanium in the aforementioned mixed layer is 80% by mass or more, The mixed layer has a concentration gradient in which the amount of aluminum is increased in the thickness direction of the decorative fiber sheet, from the surface of the mixed layer opposite to the fiber substrate toward the surface of the mixed layer toward the fiber substrate. Decorative fiber sheet.
  2. The decorative fiber sheet according to claim 1, wherein the metal layer includes a reflective layer.
  3. The decorative fiber sheet according to claim 2, wherein the reflective layer contains titanium.
  4. The decorative fiber sheet according to claim 1, wherein the total content of aluminum and titanium in the mixed layer is 90% by mass or more .
  5. The decorative fiber sheet according to any one of claims 1 to 4, wherein the aluminum content in the mixed layer is 5% by mass or more and 80% by mass or less.
  6. The decorative fiber sheet according to any one of claims 1 to 4, wherein the aluminum content in the mixed layer is 60% by mass or more and 80% by mass or less.
  7. The decorative fiber sheet according to any one of claims 1 to 4 , wherein the aluminum content in the mixed layer is 20% by mass or more and 80% by mass or less relative to 100% by mass of the total of aluminum and titanium .
  8. The decorative fiber sheet according to any one of claims 1 to 4, wherein the metal layer includes a reflective layer, and the fiber substrate, the reflective layer, and the mixed layer are laminated in that order.
  9. The decorative fiber sheet according to any one of claims 1 to 4, wherein the thickness of the mixed layer is 3 nm or more.
  10. The decorative fiber sheet according to any one of claims 1 to 4, wherein the fiber base material contains fibers of 5 denier or more and 70 denier or less.
  11. The decorative fiber sheet according to any one of claims 1 to 4, comprising a color-developing layer on the surface of the mixed layer opposite to the fiber substrate.
  12. The decorative fiber sheet according to claim 11, wherein the color-developing layer contains a metalloid or oxide.

Description

This invention relates to decorative fiber sheets, etc. Fiber substrates are used in various fields where aesthetic appeal is required. For example, carbon fiber substrates, together with resins, constitute composite materials (such as carbon fiber reinforced plastics) and are widely used in a range of applications, from relatively large items like aircraft bodies to smaller, everyday items such as sporting goods, car interior and exterior materials, and clothing. Therefore, fiber substrates are sometimes colored to enhance their aesthetic appeal. Furthermore, due to their unique aesthetic characteristics, gloss may be added during this process. Japanese Patent Publication No. 2021-006409 An example of a method for forming a mixed layer is shown.A schematic cross-sectional view is shown illustrating an example of the decorative fiber sheet of the present invention.A schematic cross-sectional view is shown illustrating an example of the decorative fiber sheet of the present invention.A schematic cross-sectional view is shown illustrating an example of the decorative fiber sheet of the present invention. In this specification, the terms "contains" and "includes" include the concepts of "contains," "includes," "substantially," and "consisting solely of." 1. Decorative Fiber Sheet The present invention relates, in one embodiment, to a decorative fiber sheet (which may also be referred to as "the fiber sheet of the present invention" in this specification) comprising a fiber base material and a metal layer, wherein the metal layer comprises a mixed layer containing aluminum and other metals. This will be described below. <1-1. Textile Base Materials> The fibrous base material is a base material containing fibers or fiber bundles as a material, and is not particularly limited as long as it is in the form of a sheet. The fibrous base material may contain components other than fibers and fiber bundles, as long as the effects of the present invention are not significantly impaired. In that case, the total amount of fibers and fiber bundles in the fibrous base material is, for example, 80% by mass or more, preferably 90% by mass or more, more preferably 95% by mass or more, and even more preferably 99% by mass or more, and is usually less than 100% by mass. Examples of fibrous base materials include woven fabrics (e.g., plain weave, twill weave, satin weave, etc.), knitted fabrics, nonwoven fabrics, paper, etc. Among these, woven fabrics and knitted fabrics are preferred, and woven fabrics are preferred, from the viewpoint that the fiber surface is flat and the light reflectivity is relatively high, which further enhances the design of the fibrous sheet of the present invention. The fibrous base material may be subjected to various treatments such as cire treatment, embossing treatment, and calendering treatment. By using a fibrous base material with higher smoothness, the metallic feel of the fibrous sheet of the present invention can be further enhanced. The layer structure of the fiber base material is not particularly limited. The fiber base material may consist of a single fiber base material, or it may be a combination of two or more fiber base materials. The fibers constituting the fibrous base material are not particularly limited and include, for example, synthetic fibers (e.g., nylon fibers, polyester fibers, acrylic fibers, vinylon fibers, polyolefin fibers, polyethylene fibers, polypropylene fibers, polyurethane fibers, etc.), regenerated fibers (e.g., rayon, polynosic, cupro, lyocell, acetate, etc.), plant fibers (e.g., cotton fibers, hemp fibers, flax fibers, rayon fibers, polynosic fibers, cupro fibers, lyocell fibers, acetate fibers, etc.), and organic fibers such as animal fibers (e.g., wool, silk, wild silk, mohair, cashmere, camel, llama, alpaca, vicuña, angora, spider silk, etc.); A wide range of inorganic fibers can be used, including carbon fibers (e.g., PAN-based carbon fibers, pitch-based carbon fibers, carbon nanotubes, etc.), glass fibers (e.g., glass wool, glass fiber, etc.), mineral fibers (e.g., asbestos, white asbestos, blue asbestos, brown asbestos, orthophthalmic asbestos, tremolite asbestos, sun-asbestos, etc.), artificial mineral fibers (e.g., rock wool, ceramic fibers, etc.), and metal fibers (e.g., stainless steel fibers, aluminum fibers, iron fibers, nickel fibers, copper fibers, etc.). The fiber form can be any of the following: continuous long fibers, short fibers obtained by cutting continuous long fibers, or milled yarn obtained by grinding into a powder. The fineness of the fibers is not particularly limited, but from the viewpoint of weight reduction, it is preferably 5 denier or more and 70 denier or less, more preferably 10 denier or more and 50 denier or less, and even more preferably 15 denier or more and 30 denier or less. The fibers may be a single type or a combination of two or more types. The fiber bundle is not particularly limited, as long as it consists of multip