JPS6183363A - Print type car interior material - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to automobile interior materials such as automobile ceiling materials and door backing materials, and particularly to partially printed automobile interior materials with excellent moldability. [Conventional technology]

Conventionally, most of the nonwoven fabrics used as interior materials for automobiles have been subjected to ordinary needle punching and backing. However, materials with such backing generally lack elasticity, and when used as ceiling materials for automobiles, they have the disadvantage of poor moldability, and improvements have been sought. (Problems to be Solved by the Invention) Therefore, the present inventors have focused their efforts on developing a nonwoven fabric suitable for use as an automobile interior material in response to the demand for peeling, and as a result, they have developed a nonwoven fabric that uses low melting point fibers, eliminates backing, and The inventors discovered that by partially welding the low-melting point fiber components by partial printing, the fibers can be moved easily during molding and can be easily stretched, leading to the discovery of the present invention.Based on the above-mentioned knowledge, the present invention The purpose is to eliminate the drawbacks of nonwoven fabrics for automobile interior materials, and also to improve pill resistance by imparting a raised tricot-like appearance.

[Means to solve the problem]

The present invention, which achieves the above object, is characterized by a polymeric structural material consisting of a fiber layer formed by partially mixing a low melting point fiber component with a different melting point into the constituent fiber components and a base layer made of a nonwoven fabric. The surface of the base layer is needle-punched on one side from the fiber layer side, so that a large number of fibers constituting the fiber layer are clustered together in a raised tricot shape, and partial printing is applied to less than 95% of the total area. ,
The point is that the low melting point fiber component is melted. The main component of the interior material here is a polymeric structural material consisting of a fiber layer, a part of which contains a low melting point fiber component, and a base layer made of nonwoven fabric, and in particular, the low melting point fiber component contained in the fiber layer is 3 to 90%. degree is suitable. If it is less than 3%, it will have poor elongation during molding as well as the welding function due to partial printing, and if it is more than 90%, it will be difficult to mold as an interior material, and like backing, it will lose its elasticity and tend to inhibit moldability. Motsu. Therefore,
The above range is a preferable ratio. Incidentally, the basis weight is usually 100 to 200, with a weight of around 150 being the most practical. The constituent fiber used is polyester. Synthetic fibers such as nylon are preferred and most common, but are not necessarily limited thereto. However, in practice, polyester fibers are most often used. Furthermore, the low melting point fiber component does not necessarily have to be of the same type as the other constituent fibers, but from the viewpoint of appearance as an interior material, it is preferable that they are of the same type, and polyester fibers with a low melting point (melting point of around 110°C) are used. is the most practical. On the other hand, the nonwoven fabric to be polymerized as the base layer can be a long fiber nonwoven fabric known as so-called spunbond, or a 7m nonwoven fabric made of spunlace, thermal bond, or print bond made of ordinary short fiber web, and has a basis weight of 20.
~ Use one selection of 70 wheels as appropriate. The fibrous layer and the nonwoven fabric base layer are formed by placing the base layer on the fibrous layer and polymerizing the fiber layer, and by single-sided needle punching from the fibrous layer side, the constituent fibers of the fibrous layer are piled onto the surface of the nonwoven fabric base layer and raised. A tricot-like, densely brushed appearance is imparted to the surface. This is effective in increasing pill resistance. What's more, this is further partially printed, and the low melting point fibers that make up the fiber layer are melted, eliminating the need for a backing and ensuring elasticity.
Improves moldability as an automobile interior material. In this case, the roller screen printing method is usually suitable for printing, and is carried out at a temperature of about 130° C., but the printing area needs to be 95% or less of the total area. If it exceeds 95%, it will cover almost the entire surface and will inhibit elongation during molding. However, the above-mentioned automobile interior materials are usually manufactured by the following steps. That is, after stabilizing a fiber layer containing 3 to 90% of low melting point fiber components with different melting points from one or both sides, a base layer made of a nonwoven fabric is placed, and from one side to the fiber layer side. The fibers constituting the fiber layer are piled up through the base layer and formed into a raised tricot shape. Next, with or without melting the low melting point fiber component, partial printing is performed on the base layer on 95% or less of the total area by a roller screen printing method, and the low melting point fiber component is melted. In this way, an automobile interior material whose surface has a raised tricot-like appearance and in which the low melting point fiber component is melted by partial printing is obtained. ``Example'' Hereinafter, one example of the automobile interior material according to the present invention will be further explained with reference to the attached drawings. Figure 3 is a plan view of the same manufacturing process, and Figure 3 is a plan view of a partially printed state. 15% of low melting point polyester fiber (melting point 110”C)
Using a fibrous web with a fiber basis weight of 155 Y/, (21), a polyester spunbond nonwoven fabric with a basis weight of 25 Y/2 was used as the base nonwoven fabric (21), and as shown in FIG. 4OS needle, 100 pieces/crl, then the same 4OS needle from the bottom side, :LOD pieces/d brane needle punching,
Base fabric non-woven fabric (polymerized with 21, further 4OS needle, 10
Needle punching of 0 needles/d was applied in two stages from the fi+ side of the fiber layer to form a raised tricot-like nap (3) on the non-woven, 1lli [21 side, and then by using a roller screen printing method. Partial printing (41) was carried out at 130°C by mixing pigments with a binder at 60% of the total area as shown in Fig. Same as 40S needle,
100 steps of needle punching with 2 steps Bti [
Then, a binder was used to impregnate the conventional punch felt type interior material of Comparative Example 1 and polyester fiber with a fiber string date of 180'/d to prepare a bonded type nonwoven fabric of Comparative Example 2. Then, for each side, the thickness, abrasion resistance, 20
When the % stress was compared, the following results were obtained. From the above results, in terms of abrasion resistance, the product of the present invention is Comparative Example 1.
．． It was observed that the pill resistance was improved compared to No. 2, and the ease of elongation during molding was found to be good due to the difference in 20% stress. Effects of the Invention As described above, the present invention The polymer layer of the fiber layer and the nonwoven fabric base is needle-punched from one side to give it a raised tricot-like appearance, which improves pill resistance and improves abrasion resistance, as well as retains low-melting-point fiber components in delicate spaces. Since no backing is mixed in, the elasticity is increased, and combined with partial printing, the fibers move more easily during molding, improving design and moldability. It has good adaptability to automobile ceilings, which was difficult to use with felt, and enhances its function as an automobile interior material, and has extremely useful effects in improving automobile interiors through molding.

[Brief explanation of drawings]

Figures 1 (a) and (b) are schematic diagrams showing each side of the raised tricot appearance polymeric structural material according to the present invention, and Figure 2 is a schematic diagram showing one example of the manufacturing process of the raised tricot appearance polymeric structural material. 3 are plan views showing aspects of partial printing. +11...Fiber layer, (2)...Nonwoven fabric. [31,... Raised, [4)...Partial printing. Q-

Claims (1)

[Scope of Claims] 1. A polymeric structural material of a nonwoven fabric and a fiber layer formed by partially mixing a low melting point fiber component with a different melting point into the constituent fiber components, the structural material being based on the nonwoven fabric. By performing needle punching on one side from the fiber layer side, the surface of the nonwoven fabric is made to have raised fibers from the fibers that make up the fiber layer, resulting in a raised tricot-like appearance, and partial printing is achieved within 95% or less of the total area. A printed type automobile interior material, characterized in that the low melting point fiber component is melted. 2. The ratio of low melting point fiber components mixed into the fiber layer is 3 to 3.
90% of the printed type automobile interior material according to claim 1.