A conventional sound absorbing material for an automobile comprising a felt material and a flame-resistant resin layer is known (for example, refer to Japanese Patent No. 3568936, (pages 3-5, FIG. 2), (Patent document 1)).
This sound absorbing material is obtained by applying a highly-viscous latex made of a flame-resistant resin as a coating to a felt material 2 so that a flame-resistant resin layer is formed on the surface of the felt material 2 and an independent fabric layer 8 remains whereby high sound absorbing properties are realized at medium and high sound ranges.
Another material including non-woven fabrics and a water-resistant film is known as a sound absorbing material as vehicle exterior equipment (for example, refer to Japanese Patent No. 3675359, (pages 2-4, FIG. 1) (Patent document 2)).
The sound absorbing material 11 as vehicle exterior equipment described in Patent Document 2 applies press molding in a state in which the water-resistant film 22 is closely attached to the surface of a fabric web 21 having a sheet shape and the two are mutually adhered.
A material as vehicle exterior equipment including a non-woven fabric with one surface of a predetermined surface roughness and friction coefficient is known in other conventional technologies (for example, refer to JP2004-359066A, (page 9-10, FIG. 3) (Patent document 3)).
According to Patent document 3, a first fiber aggregate and a second fiber aggregate are superimposed, heated and press molded. Thereby a material as vehicle exterior equipment including a layer 23 of the tire house side and a layer 22 of the tire side is manufactured.
By the way, it is desirable that foreign substances such as water, dust and dirt or the like do not adhere to a sound absorbing material used as vehicle exterior equipment. In particular, when a fender liner disposed in a tire house is used in a snowy area, once water, dirt, snow and ice or the like are adhered to the fender liner, it is not preferable that snow be further attached to the adhered substances or ice grows in the periphery of the adhered substances.
In the case of manufacturing a sound absorbing material described in Patent document 1, a highly-viscous fire-retarding material (latex) is coated on the felt member 2 to be heated and press molded. However, such a fire-retarding resin layer 5 hardly transmits heat when heated. Therefore, there is a problem in that molding by hot pressing is difficult.
A sound absorbing material described in Patent document 2 applies press molding in a state in which the water-resistant film 22 is closely attached to the surface of the fiber web 21 having a sheet shape so that the water-resistant film 22 is adhered to the surface of the fiber web 21. The sound absorbing material is hereby press molded into a shape fitting in a vehicle body, but because the water-resistant film 22 hardly transmits heat, there is a problem in that moldability is poor. Furthermore, ready-made water-resistant films are expensive so that the manufacturing cost is increased.
In a material as vehicle exterior equipment described in Patent document 3, a first fabric aggregate and a second fabric aggregate are superimposed, heated and press molded. The average deviation of surface roughness and friction coefficient of one surface are limited to below the predetermined values. However, in this material as vehicle exterior equipment, the outward facing portion is comprised from a fiber aggregate so that there are limitations to reducing the fluff of the fabric.