JPH1199869A - Interior carpet for automobile and trunk room of automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce noise entering from the interior of a trunk room by constructing an interior carpet of a stacking layer structure including a facing material layer and a base material layer which is formed of sound absorbing material and stacked on a dense layer of the facing material layer. SOLUTION: An interior carpet is of a stacking layer structure including a base material layer 34 formed of sound absorbing raw material, a dense layer 31 formed of resin material or fiber raw material, and a facing material layer 33 formed by a facing layer 32 stacked on the dense layer 31, and the base material layer 34 is laid on a panel (floor panel) of a car body directly or through a plywood plate or the lie. As a facing layer 32 for forming the facing material layer 33, a fiber composed mainly of attached polyethylene terephthalate is preferable, and as the dense layer 31, a resin layer mainly composed of polyethylene or ethylene vinyl acetate is preferable.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an interior carpet for an automobile and, more particularly, to an interior carpet for an automobile and a trunk room of an automobile which are attached to a panel forming a trunk room.

[0002]

2. Description of the Related Art As a conventional interior carpet laid on a trunk loom of an automobile, as shown in FIG. 6, a carpet skin 2 attached to a non-woven cloth 1 such as felt is used. A rear parcel board that separates the cabin from the trunk at the rear of the rear seat is provided to reduce noise entering the cabin from the trunk, but also needs a function of ventilating the air in the cabin. Things. Therefore, a through hole is provided in a part of the rear parcel board to ensure air permeability such that air in the vehicle compartment flows toward the trunk room.

[0003]

However, although the ventilation is ensured by providing the through holes in the rear parcel board as described above, the noise that enters the interior of the vehicle from the trunk room increases, and the conventional air conditioner has a disadvantage. At present, even if an interior carpet is attached, sufficient noise reduction cannot be performed.

The present invention has been achieved in view of the problems of the prior art as described above, and an object of the present invention is to reduce the noise that enters the interior of an automobile. It is an object of the present invention to provide an interior carpet for an automobile and a trunk room of an automobile, which can reduce the noise entering the interior of the vehicle from the interior of the trunk room while ensuring the ventilation between the interior and the trunk room.

[0005]

According to a first aspect of the present invention, there is provided an interior carpet for an automobile, comprising a skin layer comprising a dense layer formed of a resin material or a fiber material and a skin layer laminated on the dense layer. And a laminated structure of a base material layer formed of a sound absorbing material and laminated on the dense layer of the skin material layer.

An interior carpet for an automobile according to a second aspect of the present invention has a structure in which a ventilation layer having an air permeability of 5% or more is laminated on the base material layer.

[0007] In the car interior carpet according to claim 3 of the present invention, the ventilation layer has a density of 0.02 g / density with the sound absorbing material layer.
It is formed by lamination with an intermediate layer made of a dense and fibrous body having a size of ³ cm or less, and the intermediate layer is laminated on the base material layer.

According to a fourth aspect of the present invention, in the interior carpet for an automobile, the skin layer and the base layer are provided with a first through hole penetrating both layers, and the sound absorbing material layer forming the ventilation layer is provided. Has a second through-hole, and the first through-hole and the second through-hole are provided at positions offset so as not to overlap each other in a direction perpendicular to the axis of the hole. ing.

According to a fifth aspect of the present invention, there is provided an interior carpet for an automobile, wherein the intermediate layer is hollowed out so as to communicate the first through-hole and the second through-hole.

[0010] In the car interior carpet according to claim 6 of the present invention, the resin material forming the dense layer is polyethylene or rubber, and the sound absorbing material forming the base layer is polyester fiber or felt. It has a configuration.

According to a seventh aspect of the present invention, a trunk room of an automobile is defined by a partition disposed at least in a rear portion of a seat disposed in the passenger compartment and at a partition located at an upper rear portion of the seat to partition the passenger compartment. And a trunk room of an automobile including an interior carpet attached to an inner surface of the partition, wherein the interior carpet is made of a sound absorbing material, and is disposed on the base layer facing the partition, It has a laminated structure of a dense layer formed of a material or a fibrous material and a skin layer composed of a skin layer laminated on the dense layer.

The trunk room of an automobile according to claim 8 of the present invention has a structure in which a ventilation layer having an air permeability of 5% or more is disposed between the partition plate and the base material layer.

According to a ninth aspect of the present invention, there is provided a trunk room for an automobile, wherein the air-permeable layer has a density of 0.02 g / cm ³ or less, the density of the air-absorbing material layer facing the partition plate and the base material layer. It has a configuration formed by lamination with an intermediate layer composed of a body.

According to a tenth aspect of the present invention, in the trunk room of the automobile, in the area where the partition plate is located, the skin material layer and the base material layer are provided with first through holes penetrating both layers, and the ventilation hole is provided. A second through hole is provided in the sound absorbing material layer forming the layer, a third through hole is provided in the partition plate, and the first through hole and the second through hole are perpendicular to an axis of the hole. The second through-hole and the third through-hole are provided at positions offset so as not to overlap with each other in the direction.
The through-hole has a configuration provided at a position communicating with each other.

[0015] In a trunk room of an automobile according to an eleventh aspect of the present invention, the intermediate layer includes the first through hole and the second through hole.
It is configured to be lightened so as to communicate with the through hole.

[0016]

According to the car interior carpet according to the first aspect of the present invention, a double wall sound insulation structure is provided by a skin material layer composed of a dense layer and a skin layer and a base material layer formed of a sound absorbing material. By forming the body, a structure with sound insulation performance is achieved as compared with the related art.

Therefore, if the interior carpet having such a configuration is attached to the inner wall surface of the vehicle body panel, the noise entering the vehicle interior can be reduced at a higher level than in the past.

According to the interior carpet for an automobile according to the second aspect of the present invention, a double-walled sound insulation structure is formed by a skin material layer composed of a dense layer and a skin layer, and a base material layer formed of a sound absorbing material. The sound insulation performance can be improved and air permeability can be ensured by forming and laminating a ventilation layer having an air permeability of 5% or more on the layer of the double sound insulation structure. be able to.

Therefore, if this carpet is attached to a panel of an automobile or the like, it is possible to reduce the noise entering the interior of the vehicle while ensuring the air permeability between the vehicle interior and the outside.

In the car interior carpet according to the third aspect of the present invention, the ventilation layer and the sound absorbing material layer have a density of 0.02 g / cm 2.
Since it is formed by the intermediate layer made of a dense and sparse fibrous body of cm ³ or less, the sound insulation performance can be further improved while further securing sufficient air permeability.

According to the automobile interior carpet according to the fourth aspect of the present invention, through holes are provided in the layers on both sides of the intermediate layer made of a dense and fibrous body so as not to overlap with each other, so that a right angle vent shape is provided. By providing the ventilation path, sufficient noise reduction can be achieved, and air can flow smoothly, so that good ventilation can be achieved.

According to the car interior carpet according to the fifth aspect of the present invention, the portion of the middle layer located between the first through hole and the second through hole in the ventilation path having a right angle vent shape is lightened. Since the two through holes communicate with each other, the air flow becomes smooth, and the air permeability can be further improved while improving the sound insulation performance.

According to the automobile interior carpet according to the sixth aspect of the present invention, it is possible to form an interior carpet that is low in cost, has excellent abrasion resistance and is hard to lose its shape.

According to the trunk room of the automobile according to the seventh aspect of the present invention, it is possible to reduce the noise that enters the cabin from the trunk room and to partition the vehicle room from the trunk room by being located at the upper rear part of the seat. In the region of the partition plate, for example, the rear parcel, it is possible to ensure the air permeability between the vehicle interior and the trunk room.

According to the trunk room of an automobile according to claim 8 of the present invention, it is possible to reduce the invasion of noise in the area of the partition plate and to secure good air permeability.

According to the trunk room of the automobile according to the ninth aspect of the present invention, the sound absorbing material layer and the density of 0.02 g / cm are provided for the ventilation layer disposed between the base plate and the partition plate separating the vehicle room and the trunk room. ^Since it is formed by the intermediate layer made of ^three or less dense and fibrous bodies, it is possible to further reduce the noise that enters the cabin from the trunk room while further securing the air permeability between the cabin and the trunk room. .

According to the trunk room of the automobile according to the tenth aspect of the present invention, the layers on both sides, ie, the sound absorbing material layer, the skin material layer and the base material layer, overlap with each other with the intermediate layer made of dense and dense fibrous bodies interposed therebetween. Not through holes,
By providing a through hole in the partition plate so as to overlap with the through hole in the sound absorbing material layer, for example, air in the vehicle cabin passes through the through hole in the partition plate and the through hole in the sound absorbing material layer, and is bent at a right angle in the intermediate layer. Then, it is bent at a right angle at the end of the through hole of the base material layer and the skin material layer on the intermediate layer side, and can pass through the through hole into the trunk room.

As described above, by providing the ventilation path in the shape of a right angle vent, it is possible to further improve the air permeability between the vehicle interior and the trunk room while reducing the noise entering the vehicle interior from the trunk room. it can.

According to the automobile luggage compartment according to the eleventh aspect of the present invention, a portion of the middle layer located between the first through hole and the second through hole in the ventilation path having a right-angle vent shape is lightened. Since the two through holes communicate with each other, the air flows smoothly from, for example, the interior of the vehicle into the trunk room, and the air permeability can be further improved while achieving a reduction in noise. .

[0030]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 shows a trunk room 11 of an automobile 10.
It is a perspective external view which shows the part containing. As shown in FIG. 1, a trunk room 11 of an automobile is provided with a floor panel 1.
2, both side panels 13, wheel house panels 14,
Rear panel 15, rear seat 1 disposed in vehicle interior 20
6, a rear upper portion of the rear seat 16, the rear pillars 18, and a partition such as a rear parcel 17 as a partition plate located in a region surrounded by the rear waist 19.

As shown in FIG. 2, an interior carpet 30 according to the present invention is affixed to the inner surface of the partition wall that defines the trunk room 11. The interior carpet 30 includes at least the cabin 20 and the trunk room 11.
What is necessary is just to be stuck on the panel etc. which partition.

Here, the structure of the interior carpet 30 will be described with reference to FIGS. Note that FIG.
FIG. 4 is a cross-sectional view taken along a line AA in FIG. 4, and FIG. 4 is a cross-sectional view taken along a line BB in FIG.

As shown in FIG. 3, the interior carpet 30 has a base layer 34 formed of a sound absorbing material, and a dense layer formed of a resin material or a fiber material while being laminated on the base layer 34. 31 and a skin material layer 33 composed of a skin layer 32 laminated on the dense layer 31, and the base material layer 34 is formed of a body panel (floor panel 1).
2) directly or via a plywood plate or the like.

In the area of the rear parcel 17 for ventilating the cabin 20 and the trunk room 11, the interior carpet 30 has a dense layer 31 made of a resin material or a fiber material, as shown in FIG. This dense layer 3
1, and a dense layer 31 of the skin material layer 33 formed of a sound absorbing material.
And a ventilation layer 37 having an air permeability of 5% or more between the substrate layer 34 and the lower surface of the rear parcel 17, that is, , A ventilation layer 37 having a laminated structure of a sound absorbing material layer 35 and an intermediate layer 36 made of a dense fiber body having a density of 0.02 g / cm ³ or less. This ventilation layer 37
May be integrally treated as an interior carpet in a state of being laminated on the base material layer 34, and at the time of assembly,
It may be handled as a separate member that is laminated between the rear parcel 17 and the base material layer 34.

The skin material layer 33 and the base material layer 34 are provided with a plurality of first through holes 38 penetrating both layers, and the sound absorbing material layer 35 forming the ventilation layer 37 is provided with a plurality of first through holes 38. Are also provided with a plurality of second through holes 34a.
The through-hole 37 and the second through-hole 34a have a positional relationship deviated so as not to overlap each other in a direction perpendicular to the axis of the hole.

Further, the ventilation layer 37 is used for the rear parcel 1.
7, the plurality of third through holes 17 a provided in the rear parcel 17 and the plurality of second through holes 35 a provided in the sound absorbing material layer 35 overlap and communicate with each other. It has become.

Accordingly, the air in the passenger compartment 20 passes through the third through hole 17a and the second through hole 35a, is bent at a right angle at the intermediate layer 36, and flows therethrough. By the way, the air flow is bent downward at a right angle, and flows into the trunk room 11 through the first through hole 38.

As described above, since the ventilation path has a right-angle vent shape, it is possible to reduce the noise that enters the interior of the cabin 20 from the trunk room 11 while ensuring sufficient ventilation.

As shown in FIG. 4, the third through hole 17a provided in the rear parcel 17 does not need to have the same diameter as the second through hole 35a of the sound absorbing material layer 35, and may have a larger diameter. .

As shown in FIG. 5, in the ventilation path having the above-mentioned right-angle vent shape, a lightening portion 36a is formed in a region of the intermediate layer 36 so that the first through hole 38 and the second through hole 35a are formed. It may be formed so as to communicate. With this configuration, the passage resistance is reduced, the air flows smoothly, and the air permeability can be improved.

Further, when the seat back of the rear seat 16 is foldable, a cut may be made in a part of the interior carpet 30 so as to rotate forward with the seat back.

The skin layer 32 forming the skin material layer 33 of the interior carpet 30 is desirably a fiber mainly composed of a deposited polyethylene terephthalate, and the dense layer 31 is formed of polyethylene or ethylene vinyl acetate. Although it is desirable that the resin layer is mainly composed of a resin, etc., it is possible to form a dense layer by optimizing the fiber diameter, density, thickness, etc., even with a component mainly composed of fibers. It is also possible to use a simple polyester fiber layer or the like.

The base layer 34 forming the interior carpet 30 is made of a fiber material mainly composed of polyethylene terephthalate, or a sound absorbing material made of a fiber material such as felt in which natural fibers and artificial fibers are mixed. It is desirable that

As the sound absorbing material, a material mainly composed of natural fibers such as felt or a material composed mainly of polyester fibers (preferably a mixture of a high melting point fiber and a heat fusion type fiber) may be used.

Nylon fibers are not preferred because of high raw material cost and economical reasons, and polypropylene fibers are not preferred because they are inferior in abrasion resistance and easily lose their shape after heat compression molding.

As the sound absorbing material layer 35 forming the ventilation layer 37 of the interior carpet 30, it is preferable to use the same material as that of the base material layer 34.

As the intermediate layer 36 forming the gas permeable layer 37, it is preferable to use a dense and fibrous body having a density of 0.02 g / cm ³ or less.

As the high melting point polyester fiber used for the nonwoven fabric of the interior carpet according to the present invention, polyethylene terephthalate or a polyester having a component equivalent thereto is inexpensive and desirable. Examples of the copolyester used in the heat-fusible fiber having a core-sheath structure include an acid component such as terephthalic acid and isophthalic acid and a diol component such as ethylene glycol, propylene glycol, and diethylene glycol, or a lactone, which is ring-opened and copolymerized. It is possible to use a copolyester or the like.

As the polyester used for the core,
Polyethylene terephthalate or a polyester having an equivalent component is inexpensive and desirable.

Next, the results of producing the interior carpet according to the present invention under various conditions, mounting the carpet on an automobile, and evaluating the result will be described below as Examples and Comparative Examples. still,
A through hole 17a as shown in FIG. 4 was provided in the rear parcel 17 of the vehicle in the following examples and comparative examples.

[0052]

[Example 1] 13 denier 52mm which was beige-colored
Regular polyester stable fiber with a long round cross section: 80% by weight, similarly heat-bonded polyester stable fiber having a core-sheath structure of 2 denier and 52mm length, which is similarly beige-stained (melting type at 130 ° C.): 20% % Through a blending, carding, cross layer, and needle punching process to obtain a raw fabric having a basis weight of 200 g / m ² .

Further, the dense layer 20 made of polyethylene
0 g / m ² was adhered to obtain a skin material layer 33.

Subsequently, a 6-denier, 52 mm long, normal polyester stable fiber having a round cross section: 80% by weight, a heat-fusible polyester stable fiber having a core-sheath structure, 2 denier, 52 mm long (melting at 130 ° C.): 20 wt% was passed through blending, carding, cross layer, and needle punching steps to obtain a raw material having a basis weight of 300 g / cm ² , that is, a base material layer 34.

The skin material layer 33 and the base material layer 34 are subjected to a heat treatment step and a press forming step, so that the thickness of the base material layer 34 becomes a maximum of 5 mm in the area of the rear parcel 17 and a maximum of 10 mm in other areas. I did it. In the area of the rear parcel 17, a plurality of through holes 38 each having a diameter of 10 mm were formed by a trimming process.

Subsequently, similarly to the base material layer 34, 80% by weight of a normal polyester stable fiber having a circular cross section having a length of 6 deniers of 52 mm: a heat fusion type polyester stable having a core-sheath structure of 2 deniers having a length of 52 mm. Fiber (130 ° C
(Molten type): 200 g of 20% by weight through blending, carding, cross layer, and needle punching processes
/ M ² , ie, a sound absorbing material layer 35, and a plurality of through-holes 35 a having a diameter of 10 mm are formed by a trimming process.
Molded thick.

Further, 80% by weight of a normal polyester stable fiber having a circular cross section having a length of 100 denier and 52 mm length: 20% by heat fusion type polyester stable fiber having a core-sheath structure of 2 denier and having a length of 52 mm (melting type at 130 ° C.): 20 weight%
Was passed through a blending, carding, cross-layer, and needle punching step to obtain a raw fabric having a basis weight of 200 gm ² , that is, an intermediate layer 36, and was formed to a thickness of 5 mm.

The intermediate layer 36 and the sound absorbing material layer 3
5 are sequentially laminated on the base material layer 34 so that the through holes 35a and the through holes 38 do not overlap with each other, and the sound absorbing material layer 35 is placed on the rear parcel so that the through holes 35a and the through holes 17a of the rear parcel 17 communicate with each other. 17 was attached to the lower surface.

A running test was performed on the evaluation vehicle equipped with the interior carpet obtained as described above to evaluate noise and air permeability. As a result, trunk room 11
The noise that enters the passenger compartment 20 from the vehicle is considerably reduced,
The ventilation between the cabin 20 and the trunk room 11 was sufficiently ensured.

[0060]

Embodiment 2 The skin material layer 33 had the same material configuration as that of Embodiment 1.

The base layer 34 is made of 6 denier 52 mm
Regular polyester stable fiber having a long round cross section: 80% by weight, heat-fusible polyester stable fiber having a core-sheath structure of 2 denier 52 mm long (130 ° C. melting type):
20% by weight was passed through blending, carding, cross layer, and needle punching steps to obtain a raw fabric having a basis weight of 400 g / m ² .

The skin layer 33 and the base layer 34 are subjected to a heat treatment step and a press forming step, so that the thickness of the base layer 34 is up to 5 mm in the area of the rear parcel 17 and up to 10 mm in other areas. I did it. In the area of the rear parcel 17, a plurality of through holes 38 each having a diameter of 10 mm were formed by a trimming process.

Subsequently, as the ventilation layer 37, the intermediate layer 3
6, the sound absorbing material layer 35 has the same specifications as those of the first embodiment.

The intermediate layer 36 and the sound absorbing material layer 3
5 are sequentially laminated on the base material layer 34 so that the through holes 35a and the through holes 38 do not overlap with each other, and the sound absorbing material layer 35 is placed on the rear parcel so that the through holes 35a and the through holes 17a of the rear parcel 17 communicate with each other. 17 was attached to the lower surface.

The evaluation car equipped with the interior carpet obtained as described above was subjected to a running test to evaluate noise and air permeability. As a result, trunk room 11
The noise that enters the passenger compartment 20 from the vehicle has been considerably reduced. This is considered to be due to the improvement in the sound absorbing performance due to the increase in the basis weight of the base material layer 34. or,
The ventilation between the cabin 20 and the trunk room 11 was sufficiently ensured.

[0066]

Embodiment 3 The skin material layer 33 had the same material configuration as that of Embodiment 1.

As the base material layer 34, 3 denier 52 mm
Regular polyester stable fiber having a long round cross section: 80% by weight, heat-fusible polyester stable fiber having a core-sheath structure of 2 denier 52 mm long (130 ° C. melting type):
20% by weight was passed through blending, carding, cross layer, and needle punching steps to obtain a raw fabric having a basis weight of 400 g / m ² .

The skin material layer 33 and the base material layer 34 were subjected to a heat treatment step and a press molding step so that the thickness of the base material layer 34 was 5 mm at the maximum in the region of the rear parcel 17 and 10 mm at the other positions. . In the area of the rear parcel 17, a plurality of through holes 38 each having a diameter of 10 mm were formed by a trimming process.

Subsequently, as the ventilation layer 37, the intermediate layer 3
6, the sound absorbing material layer 35 has the same specifications as those of the first embodiment.

The intermediate layer 36 and the sound absorbing material layer 3
5 are sequentially laminated on the base material layer 34 so that the through holes 35a and the through holes 38 do not overlap with each other, and the sound absorbing material layer 35 is placed on the rear parcel so that the through holes 35a and the through holes 17a of the rear parcel 17 communicate with each other. 17 was attached to the lower surface.

In the evaluation vehicle equipped with the interior carpet obtained as described above, a running test was performed to evaluate noise and air permeability. As a result, trunk room 11
The noise that enters the passenger compartment 20 from the vehicle has been considerably reduced. This is considered to be attributable to the improvement in the sound absorbing performance due to the reduction in the diameter of the main fibers of the base layer 34. In addition, the ventilation between the cabin 20 and the trunk room 11 was sufficiently ensured.

[0072]

Embodiment 4 13-denier 52mm on beige
Regular polyester stable fiber with a long round cross section: 80% by weight, similarly heat-bonded polyester stable fiber having a core-sheath structure of 2 denier and 52mm length, which is similarly beige-stained (melting type at 130 ° C.): 20% % Through a blending, carding, cross layer, and needle punching process to obtain a raw fabric having a basis weight of 200 g / m ² .

Further, the dense layer 40 made of polyethylene
0 g / m ² was adhered to obtain a skin material layer 33.

Subsequently, a 6-denier, 52 mm long, normal polyester stable fiber having a round cross section: 80% by weight, a heat-fusible polyester stable fiber having a core-sheath structure, 2 denier, 52 mm long (melting at 130 ° C.): 20 wt% was passed through blending, carding, cross layer, and needle punching steps to obtain a raw material having a basis weight of 300 g / cm ² , that is, a base material layer 34.

The skin material layer 33 and the base material layer 34 are subjected to a heat treatment step and a press forming step, so that the thickness of the base material layer 34 becomes a maximum of 5 mm in the area of the rear parcel 17 and a maximum of 10 mm in other areas. I did it. In the area of the rear parcel 17, a plurality of through holes 38 each having a diameter of 10 mm were formed by a trimming process.

Subsequently, as the ventilation layer 37, the intermediate layer 3
6, the sound absorbing material layer 35 has the same specifications as those of the first embodiment.

The intermediate layer 36 and the sound absorbing material layer 3
5 are sequentially laminated on the base material layer 34 so that the through holes 35a and the through holes 38 do not overlap with each other, and the sound absorbing material layer 35 is placed on the rear parcel so that the through holes 35a and the through holes 17a of the rear parcel 17 communicate with each other. 17 was attached to the lower surface.

A running test was conducted on the evaluation vehicle equipped with the interior carpet obtained as described above, and the noise and air permeability were evaluated. As a result, trunk room 11
The noise that enters the passenger compartment 20 from the vehicle has been considerably reduced. This is considered to be due to the improvement in the sound absorbing performance due to the increase in the basis weight of the dense layer 31. or,
The ventilation between the cabin 20 and the trunk room 11 was sufficiently ensured.

[0079]

Fifth Embodiment 13 Denier 52mm Colored Beige
Regular polyester stable fiber with a long round cross section: 80% by weight, similarly heat-bonded polyester stable fiber having a core-sheath structure of 2 denier and 52mm length, which is similarly beige-stained (melting type at 130 ° C.): 20% % Through a blending, carding, cross layer, and needle punching process to obtain a raw fabric having a basis weight of 200 g / m ² . Further, a dense layer 400 g / m ² of polyethylene was adhered to obtain a skin material layer 33.

Subsequently, a 6-denier, 52 mm long, normal polyester stable fiber having a round cross section: 80% by weight, a heat-fusible polyester stable fiber having a core-sheath structure, 2 denier, 52 mm long (130 ° C. melting type): 20 wt% of the raw material was passed through a blending, carding, cross layer, and needle punching process to obtain a raw material having a basis weight of 400 g / cm ² , that is, a base material layer 34.

The skin material layer 33 and the base material layer 34 are subjected to a heat treatment step and a press forming step, so that the thickness of the base material layer 34 is a maximum of 5 mm in the region of the rear parcel 17 and a maximum of 10 mm in other areas. I did it. In the area of the rear parcel 17, a plurality of through holes 38 each having a diameter of 10 mm were formed by a trimming process.

Subsequently, as the ventilation layer 37, the intermediate layer 3
6, the sound absorbing material layer 35 has the same specifications as those of the first embodiment.

The intermediate layer 36 and the sound absorbing material layer 3
5 are sequentially laminated on the base material layer 34 so that the through holes 35a and the through holes 38 do not overlap with each other, and the sound absorbing material layer 35 is placed on the rear parcel so that the through holes 35a and the through holes 17a of the rear parcel 17 communicate with each other. 17 was attached to the lower surface.

In the evaluation vehicle equipped with the interior carpet obtained as described above, a running test was performed to evaluate noise and air permeability. As a result, trunk room 11
The noise that enters the passenger compartment 20 from the vehicle has been considerably reduced. This is considered to be due to the improvement in the sound absorbing performance due to the increase in the basis weight of the dense layer 31. or,
The ventilation between the cabin 20 and the trunk room 11 was sufficiently ensured.

[0085]

[Embodiment 6] The skin material layer 33 had the same material constitution as that of the embodiment 1.

The base layer 34 is made of 6 denier 52 mm
Regular polyester stable fiber having a long round cross section: 80% by weight, heat-fusible polyester stable fiber having a core-sheath structure of 2 denier 52 mm long (130 ° C. melting type):
20% by weight was passed through blending, carding, cross layer, and needle punching steps to obtain a raw fabric having a basis weight of 300 g / m ² .

The skin material layer 33 and the base material layer 34 are subjected to a heat treatment step and a press molding step, so that the thickness of the base material layer 34 becomes a maximum of 5 mm in the area of the rear parcel 17 and a maximum of 10 mm in other areas. I did it. In the area of the rear parcel 17, a plurality of through holes 38 each having a diameter of 10 mm were formed by a trimming process.

Next, as the sound absorbing material layer 35 of the ventilation layer 37, as in the case of the intermediate layer 34, a normal polyester stable fiber having a circular cross section of 6 denier and 52 mm length: 80% by weight,
Heat-sealable polyester stable fiber having a core-sheath structure with a denier of 52 mm (melting type at 130 ° C.): 20 wt% is blended, carded, cross-layered, and subjected to a needle punching process to obtain a basis weight of 200 g / m ² . Get anti,
In the trimming process, a plurality of through holes 35a having a diameter of 10 mm were formed and formed into a thickness of 5 mm.

The intermediate layer 36 is made of 90% by weight of a normal polyester stable fiber having a circular cross section of 150 denier and 52 mm in length: 90% by weight, and a heat-fusible polyester stable fiber (130) having a core and sheath structure of 2 denier and 52 mm in length. ° C
(Molten type): 10% by weight is blended, carded, cross-layered and passed through a needle punching process to obtain a basis weight of 80 g /
give raw of m ^2, and molded into 5mm thick.

The intermediate layer 36 and the sound absorbing material layer 3
5 are sequentially laminated on the base material layer 34 so that the through holes 35a and the through holes 38 do not overlap with each other, and the sound absorbing material layer 35 is placed on the rear parcel so that the through holes 35a and the through holes 17a of the rear parcel 17 communicate with each other. 17 was attached to the lower surface.

A running test was performed on the evaluation vehicle equipped with the interior carpet obtained as described above to evaluate noise and air permeability. As a result, trunk room 11
The noise that enters the passenger compartment 20 from the vehicle is considerably reduced,
The air permeability between the cabin 20 and the trunk room 11 was sufficiently ensured as compared with the first embodiment.

[0092]

[Embodiment 7] The skin material layer 33 had the same material constitution as that of the embodiment 1.

The base layer 34 is made of 6 denier 52 mm
Regular polyester stable fiber having a long round cross section: 80% by weight, heat-fusible polyester stable fiber having a core-sheath structure of 2 denier 52 mm long (130 ° C. melting type):
20% by weight was passed through blending, carding, cross layer, and needle punching steps to obtain a raw fabric having a basis weight of 300 g / m ² .

The skin material layer 33 and the base material layer 34 are subjected to a heat treatment step and a press molding step, so that the thickness of the base material layer 34 becomes a maximum of 5 mm in the area of the rear parcel 17 and a maximum of 10 mm in other areas. I did it. In the area of the rear parcel 17, a plurality of through holes 38 each having a diameter of 10 mm were formed by a trimming process.

Subsequently, as in the case of the intermediate layer 34, the sound absorbing material layer 35 of the gas permeable layer 37 is made of a normal polyester stable fiber having a circular cross section of 6 denier and 52 mm length: 80% by weight,
Heat-sealable polyester stable fiber having a core-sheath structure with a denier of 52 mm (melting type at 130 ° C.): 20 wt% is blended, carded, cross-layered, and subjected to a needle punching process to obtain a basis weight of 200 g / m ² . Get anti,
In the trimming process, a plurality of through holes 35a having a diameter of 10 mm were formed and formed into a thickness of 5 mm.

The intermediate layer 36 is made of 90% by weight of a normal polyester stable fiber having a flat cross section having a length of 150 denier and 52 mm long, and a heat-fusible polyester stable fiber (130 mm having a core-sheath structure having a length of 2 denier of 52 mm).
Melting point): 10% by weight is blended, carded, cross-layered, and needle punched to obtain a basis weight of 800
A raw material of g / m ² was obtained and molded to a thickness of 5 mm.

The intermediate layer 36 and the sound absorbing material grass 3
5 are sequentially laminated on the base material layer 34 so that the through holes 35a and the through holes 38 do not overlap with each other, and the sound absorbing material layer 35 is placed on the rear parcel so that the through holes 35a and the through holes 17a of the rear parcel 17 communicate with each other. 17 was attached to the lower surface.

A running test was performed on the evaluation vehicle equipped with the interior carpet obtained as described above to evaluate noise and air permeability. As a result, trunk room 11
The noise that enters the passenger compartment 20 from the vehicle is considerably reduced,
The air permeability between the cabin 20 and the trunk room 11 was sufficiently ensured as compared with the first embodiment.

[0099]

[Embodiment 8] The skin material layer 33 had the same material constitution as that of the embodiment 1.

As the base material layer 34, 6 denier 52 mm
Regular polyester stable fiber having a long round cross section: 80% by weight, heat-fusible polyester stable fiber having a core-sheath structure of 2 denier 52 mm long (130 ° C. melting type):
20% by weight was passed through blending, carding, cross layer, and needle punching steps to obtain a raw fabric having a basis weight of 300 g / m ² .

The skin material layer 33 and the base material layer 34 are subjected to a heat treatment step and a press forming step, so that the thickness of the base material layer 34 is a maximum of 5 mm in the area of the rear parcel 17 and a maximum of 10 mm in other areas. I did it. In the area of the rear parcel 17, a plurality of through holes 38 each having a diameter of 10 mm were formed by a trimming process.

Subsequently, as the sound absorbing material layer 35 of the ventilation layer 37, as in the case of the intermediate layer 34, a 6-denier 52 mm long, normal polyester stable fiber having a circular cross section: 80% by weight,
Heat-sealable polyester stable fiber having a core-sheath structure with a denier of 52 mm (melting type at 130 ° C.): 20 wt% is blended, carded, cross-layered, and subjected to a needle punching process to obtain a basis weight of 200 g / m ² . Get anti,
In the trimming process, a plurality of through holes 35a having a diameter of 10 mm were formed and formed into a thickness of 5 mm.

The intermediate layer 36 is made of a heat-fusible polyester stable fiber (130%) having a core-sheath structure having a core-sheath structure having a denier of 80% by weight and a denier of 100 mm. ° C
Melting type): 20% by weight is blended, carded, cross-layered and passed through a needle punching process to obtain a basis weight of 800 g
/ M ² was obtained, molded into a thickness of 5 mm, and punched out in a trimming step to form a space portion connecting the through-hole 35a and the through-hole 38, thereby forming a lightening 36a.

The intermediate layer 36 and the sound absorbing material layer 3
5 are sequentially laminated on the base material layer 34 so that the through holes 35a and the through holes 38 do not overlap with each other, and the sound absorbing material layer 35 is placed on the rear parcel so that the through holes 35a and the through holes 17a of the rear parcel 17 communicate with each other. 17 was attached to the lower surface.

A running test was performed on the evaluation vehicle equipped with the interior carpet obtained as described above, and the noise and air permeability were evaluated. As a result, trunk room 11
The noise that enters the passenger compartment 20 from the vehicle is considerably reduced,
The air permeability between the cabin 20 and the trunk room 11 was sufficiently ensured as compared with the first embodiment.

[0106]

Embodiment 9 The skin material layer 33 had the same material constitution as that of Embodiment 1.

As the base material layer 34, 6 denier 52 mm
Regular polyester stable fiber with a long round cross section: 70% by weight, heat-fusible polyester stable fiber having a core-sheath structure of 2 denier 52 mm long (130 ° C. melting type):
30% by weight was passed through blending, carding, cross layer, and needle punching steps to obtain a raw fabric having a basis weight of 300 g / m ² .

The skin material layer 33 and the base material layer 34 are subjected to a heat treatment step and a press forming step, so that the thickness of the base material layer 34 is a maximum of 5 mm in the area of the rear parcel 17 and a maximum of 10 mm in other areas. I did it. In the area of the rear parcel 17, a plurality of through holes 38 each having a diameter of 10 mm were formed by a trimming process.

Subsequently, as the ventilation layer 37, the intermediate layer 3
6, the sound absorbing material layer 35 has the same specifications as those of the first embodiment.

The intermediate layer 36 and the sound absorbing material layer 3
5 are sequentially laminated on the base material layer 34 so that the through holes 35a and the through holes 38 do not overlap with each other, and the sound absorbing material layer 35 is placed on the rear parcel so that the through holes 35a and the through holes 17a of the rear parcel 17 communicate with each other. 17 was attached to the lower surface.

A running test was conducted on the evaluation vehicle equipped with the interior carpet obtained as described above, and the noise and air permeability were evaluated. As a result, trunk room 11
The noise that enters the passenger compartment 20 from the vehicle is considerably reduced,
The ventilation between the cabin 20 and the trunk room 11 was also ensured. Further, since the amount of binder fibers in the base material layer 34 was increased, the overall rigidity was increased.

[0112]

Embodiment 10 The skin material layer 33 had the same material constitution as that of Embodiment 1.

As the base material layer, 13 denier 52 m
Normal polyester stable fiber with m-length round cross section: 70
% By weight, heat-fusible polyester stable fiber having a core-sheath structure having a length of 52 mm and a denier of 2 denier (melting type at 130 ° C.): 30% by weight is blended, carded, cross-layered, and needle-punched to obtain a basis weight of 300 g / m
² fabrics were obtained.

The skin material layer 33 and the base material layer 34 are subjected to a heat treatment step and a press molding step, so that the thickness of the base material layer 34 becomes a maximum of 5 mm in the area of the rear parcel 17 and a maximum of 10 mm in other areas. I did it. In the area of the rear parcel 17, a plurality of through holes 38 each having a diameter of 10 mm were formed by a trimming process.

Subsequently, as the ventilation layer 37, the intermediate layer 3
6, the sound absorbing material layer 35 has the same specifications as those of the first embodiment.

The intermediate layer 36 and the sound absorbing material layer 3
5 are sequentially laminated on the base material layer 34 so that the through holes 35a and the through holes 38 do not overlap with each other, and the sound absorbing material layer 35 is placed on the rear parcel so that the through holes 35a and the through holes 17a of the rear parcel 17 communicate with each other. 17 was attached to the lower surface.

A running test was performed on the evaluation vehicle equipped with the interior carpet obtained as described above, and the noise and air permeability were evaluated. As a result, trunk room 11
The noise that enters the passenger compartment 20 from the vehicle is considerably reduced,
The ventilation between the cabin 20 and the trunk room 11 was also ensured. Further, by increasing the amount of binder in the base material layer 34 and increasing the diameter of the main fiber, the overall rigidity was increased.

[0118]

Embodiment 11 As the skin material layer 33 and the base material layer 34,
The same material configuration as in Example 1 was used.

Next, as the sound absorbing material layer 35 of the gas permeable layer 37, as in the case of the base material layer 34, a normal polyester stable fiber having a circular cross section of 6 denier and 52 mm length: 80% by weight,
Heat-sealable polyester stable fiber having a core-sheath structure having a denier of 52 mm (melting type at 130 ° C.): 20 wt% is blended, carded, cross-layered, and subjected to a needle punching process to obtain a basis weight of 400 g / m ² . Get anti,
In the trimming process, a plurality of through holes 35a having a diameter of 10 mm were formed and formed into a thickness of 5 mm.

As the intermediate layer 36, a heat-bondable polyester stable fiber (130%) having a core-sheath structure having a core-sheath structure having a denier of 80% by weight and a denier of 52 mm was used. ° C
(Melting type): 20% by weight is blended, carded, cross-layered, and passed through a needle punching process to obtain a basis weight of 100 g.
/ M ² , and molded to a thickness of 5 mm.

The intermediate layer 36 and the sound absorbing material layer 3
5 are sequentially laminated on the base material layer 34 so that the through holes 35a and the through holes 38 do not overlap with each other, and the sound absorbing material layer 35 is placed on the rear parcel so that the through holes 35a and the through holes 17a of the rear parcel 17 communicate with each other. 17 was attached to the lower surface.

A running test was performed on the evaluation vehicle equipped with the interior carpet obtained as described above, and the noise and air permeability were evaluated. As a result, trunk room 11
The noise that enters the passenger compartment 20 from the vehicle has been considerably reduced. This is considered to be due to the improvement in the sound absorbing performance due to the increase in the basis weight of the sound absorbing material layer 35 forming the ventilation layer 37. In addition, the cabin 20 and the trunk room 1
The air permeability with No. 1 was also secured.

[0123]

Embodiment 12 As the skin material layer 33 and the base material layer 34,
The same material configuration as in Example 1 was used.

Subsequently, as the sound absorbing material layer 35 of the ventilation layer 37, as in the case of the base material layer 34, a normal polyester stable fiber having a circular cross section of 2 denier 52 mm in length: 80% by weight,
Heat-sealable polyester stable fiber having a core-sheath structure having a denier of 52 mm (melting type at 130 ° C.): 20 wt% is blended, carded, cross-layered, and subjected to a needle punching process to obtain a basis weight of 400 g / m ² . Get anti,
In the trimming process, a plurality of through holes 35a having a diameter of 10 mm were formed and formed into a thickness of 5 mm.

As the intermediate layer 36, a heat-fusible polyester stable fiber (130%) having a core-sheath structure having a core-sheath structure having a denier of 100 denier and 52 mm length: 80% by weight and a cross section of 52 denier was used. ° C
(Melt type): 20% by weight through blending, carding, cross layer, and needle punching processes, with a basis weight of 80 g /
give raw of m ^2, and molded into 5mm thick.

The intermediate layer 36 and the sound absorbing material layer 3
5 are sequentially laminated on the base material layer 34 so that the through holes 35a and the through holes 38 do not overlap with each other, and the sound absorbing material layer 35 is placed on the rear parcel so that the through holes 35a and the through holes 17a of the rear parcel 17 communicate with each other. 17 was attached to the lower surface.

A running test was performed on the evaluation vehicle equipped with the interior carpet obtained as described above, and the noise and air permeability were evaluated. As a result, trunk room 11
The noise that enters the passenger compartment 20 from the vehicle has been considerably reduced. This is considered to be due to the improvement in the sound absorbing performance due to the reduced diameter of the main fibers of the sound absorbing material layer 35 forming the ventilation layer 37. In addition, the ventilation between the cabin 20 and the trunk room 11 was ensured.

[0128]

Embodiment 13 As the skin material layer 33 and the base material layer 34,
The same material configuration as in Example 1 was used.

Subsequently, as the sound absorbing material layer 35 of the ventilation layer 37, similarly to the base layer 34, a 2-denier Y-shaped cross section of 52 mm
Long regular polyester stable fiber: 80% by weight, 2
Heat-sealable polyester stable fiber having a core-sheath structure having a denier of 52 mm (melting type at 130 ° C.): 20 wt% is blended, carded, cross-layered, and subjected to a needle punching process to obtain a basis weight of 400 g / m ² . Get anti,
In the trimming process, a plurality of through holes 35a having a diameter of 10 mm were formed and formed into a thickness of 5 mm.

As the intermediate layer 36, a heat-fusible polyester stable fiber (130%) having a core-sheath structure having a core-sheath structure having a denier of 80% by weight and a denier of 52 mm was used. ° C
(Melt type): 20% by weight through blending, carding, cross layer, and needle punching processes, with a basis weight of 80 g /
give raw of m ^2, and molded into 5mm thick.

The intermediate layer 36 and the sound absorbing material layer 3
5 are sequentially laminated on the base material layer 34 so that the through holes 35a and the through holes 38 do not overlap with each other, and the sound absorbing material layer 35 is placed on the rear parcel so that the through holes 35a and the through holes 17a of the rear parcel 17 communicate with each other. 17 was attached to the lower surface.

A running test was performed on the evaluation vehicle equipped with the interior carpet obtained as described above to evaluate noise and air permeability. As a result, trunk room 11
The noise that enters the passenger compartment 20 from the vehicle has been considerably reduced. This is considered to be due to the improvement in the sound absorbing performance due to the irregular diameter of the main fiber of the sound absorbing material layer 35 forming the ventilation layer 37. In addition, the ventilation between the cabin 20 and the trunk room 11 was ensured.

[0133]

Embodiment 14 As the skin material layer 33 and the base material layer 34,
The same material configuration as in Example 1 was used.

Subsequently, the sound-absorbing material layer 35 of the ventilation layer 37 was made of a 2-denier Y-shaped
Long regular polyester stable fiber: 80% by weight, 2
Heat-bondable polyester stable fiber having a core-sheath structure with a denier of 52 mm (melting at 130 ° C.): 20 wt% is blended, carded, cross-layered, and subjected to a needle punching process to obtain a base weight of 500 g / m ² . Get anti,
In the trimming step, a plurality of through-holes 35a having a diameter of 10 mm were formed and formed into a thickness of 8 mm.

The intermediate layer 36 is made of a heat-fusible polyester stable fiber (130%) having a core-sheath structure having a core-sheath structure having a denier of 80% by weight and a denier of 100 mm. ° C
(Melt type): 20% by weight through blending, carding, cross layer, and needle punching processes, with a basis weight of 80 g /
give raw of m ^2, and molded into 5mm thick.

Then, the intermediate layer 36 and the sound absorbing material layer 3
5 are sequentially laminated on the base material layer 34 so that the through holes 35a and the through holes 38 do not overlap with each other, and the sound absorbing material layer 35 is placed on the rear parcel so that the through holes 35a and the through holes 17a of the rear parcel 17 communicate with each other. 17 was attached to the lower surface.

A running test was performed on the evaluation vehicle equipped with the interior carpet obtained as described above, and the noise and air permeability were evaluated. As a result, trunk room 11
The noise that enters the passenger compartment 20 from the vehicle has been considerably reduced. This is considered to be due to the fact that the cross-sectional shape of the main fiber of the sound-absorbing material layer 35 forming the ventilation layer 37 is modified and the thickness is increased, thereby improving the sound-absorbing performance. In addition, the ventilation between the cabin 20 and the trunk room 11 was ensured.

[0138]

[Comparative Example 1] 13-denier 52mm on beige
Regular polyester stable fiber with a long round cross section: 80% by weight, similarly heat-bonded polyester stable fiber having a core-sheath structure of 2 denier and 52mm length, which is similarly beige-stained (melting type at 130 ° C.): 20% % Through a blending, carding, cross layer, and needle punching process to obtain a raw fabric having a basis weight of 200 g / m ² . Further, a dense layer 200 g / m ² of polyethylene was adhered to obtain a skin material layer 33.

Subsequently, 80% by weight of a normal polyester stable fiber having a round cross section having a length of 6 denier of 52 mm: heat-fusible polyester stable fiber having a core-sheath structure of 2 denier having a length of 52 mm (melting at 130 ° C.): 20 wt% was passed through blending, carding, cross layer, and needle punching steps to obtain a raw material having a basis weight of 300 g / cm ² , that is, a base material layer 34.

The skin material layer 33 and the base material layer 34 are subjected to a heat treatment step and a press forming step, so that the thickness of the base material layer 34 becomes a maximum of 5 mm in the area of the rear parcel 17 and a maximum of 10 mm in other areas. I did it. In the area of the rear parcel 17, 20 through holes 38 each having a diameter of 10 mm were formed by a trimming process, and the opening ratio was set to 0.1% or less.

Next, similarly to the base material layer 34, a heat-bondable polyester stable having a 6-denier 52 mm length normal polyester stable fiber having a round cross section: 80% by weight and a 2 denier 52 mm length core-sheath structure. Fiber (130 ° C
(Molten type): 200 g of 20% by weight through blending, carding, cross layer, and needle punching processes
/ M ² , ie, a sound absorbing material layer 35, and a plurality of through-holes 35 a having a diameter of 10 mm are formed by a trimming process.
Molded thick.

Also, a 50-denier 52 mm long, normal polyester stable fiber having a round cross section: 80% by weight, a heat-fusible polyester stable fiber having a core-sheath structure of 2 denier, 52 mm long (melting at 130 ° C.): 20 The weight% was passed through blending, carding, cross layer, and needle punching steps to obtain a raw fabric having a basis weight of 80 gm / ² , that is, an intermediate layer 36, which was formed into a size of 5 mm.

The intermediate layer 36 and the sound absorbing material layer 3
5 are sequentially laminated on the base material layer 34 so that the through holes 35a and the through holes 38 do not overlap, and the sound absorbing material layer 35 is placed on the lower surface of the rear parcel 17 so that the through holes 35a and the through holes 17a communicate with each other. Pasted.

A running test was performed on the evaluation vehicle equipped with the interior carpet obtained as described above to evaluate noise and air permeability. As a result, trunk room 11
Although the noise that enters the passenger compartment 20 from the outside was considerably reduced, the ventilation between the passenger compartment 20 and the trunk room 11 was not ensured. This is because the skin material layer 33 and the base material layer 34
Although the sound insulation is improved because the aperture ratio is as small as 0.1% or less, it is considered that the aperture ratio was too small to obtain an acceptable air permeability.

[0145]

Comparative Example 2 The skin material layer 33 had the same material composition as in Example 1.

As the base material layer 34, 6 denier 52 mm
Regular polyester stable fiber having a long round cross section: 80% by weight, heat-fusible polyester stable fiber having a core-sheath structure of 2 denier 52 mm long (130 ° C. melting type):
20% by weight was passed through blending, carding, cross layer, and needle punching steps to obtain a raw fabric having a basis weight of 300 g / m ² .

The skin material layer 33 and the base material layer 34 are subjected to a heat treatment step and a press forming step, so that the thickness of the base material layer 34 becomes a maximum of 5 mm in the area of the rear parcel 17 and a maximum of 10 mm in other areas. I did it. In the area of the rear parcel 17, a plurality of through holes 38 each having a diameter of 10 mm were formed by a trimming process.

Subsequently, as in the case of the base material layer 34, the sound absorbing material layer 35 of the gas permeable layer 37 was a normal polyester stable fiber having a circular cross section of 6 denier and 52 mm length: 80% by weight,
Heat-sealable polyester stable fiber having a core-sheath structure with a denier of 52 mm (melting type at 130 ° C.): 20 wt% is blended, carded, cross-layered, and subjected to a needle punching process to obtain a basis weight of 200 g / m ² . Get anti,
In the trimming process, a plurality of through holes 35a having a diameter of 10 mm were formed and formed into a thickness of 5 mm.

The intermediate layer 36 is made of 80% by weight of a normal polyester stable fiber having a circular cross section of 100 denier and 52 mm long, and a heat fusion type polyester stable fiber (130 mm) having a core-sheath structure of 2 denier and 52 mm long. ° C
Melting type): 20% by weight is blended, carded, cross-layered and passed through a needle punching process to obtain a basis weight of 800 g
/ M ² , and molded to a thickness of 5 mm.

The intermediate layer 36 and the sound absorbing material layer 3
5 are sequentially stacked on the base material layer 34 so that the through-hole 35a and the through-hole 38 overlap, that is, communicate with each other in a straight line, and the through-hole 35a and the through-hole 17a of the rear parcel 17 communicate with each other. Thus, the sound absorbing material layer 35 was attached to the lower surface of the rear parcel 17.

A running test was performed on the evaluation vehicle equipped with the interior carpet obtained as described above, and the noise and air permeability were evaluated. As a result, although air permeability between the cabin 20 and the trunk room 11 was sufficiently ensured, the sound insulation performance at the rear parcel 17 was at a lower level than in each of the examples. This is considered to be due to the fact that a straight ventilation path was formed in the portion of the ventilation layer 37 instead of a right-angle vent shape.

[0152]

COMPARATIVE EXAMPLE 3 The skin material layer 33 had the same material constitution as that of the first embodiment.

As the base material layer 34, 6 denier 52 mm
Regular polyester stable fiber having a long round cross section: 80% by weight, heat-fusible polyester stable fiber having a core-sheath structure of 2 denier 52 mm long (130 ° C. melting type):
20% by weight was passed through blending, carding, cross layer, and needle punching steps to obtain a raw fabric having a basis weight of 300 g / m ² .

The skin material layer 33 and the base material layer 34 are subjected to a heat treatment step and a press forming step, so that the thickness of the base material layer 34 is a maximum of 5 mm in the area of the rear parcel 17 and a maximum of 10 mm in other areas. I did it. In the area of the rear parcel 17, a plurality of through holes 38 each having a diameter of 10 mm were formed by a trimming process.

Subsequently, as the sound absorbing material layer 35 of the ventilation layer 37, similarly to the base material layer 34, a normal polyester stable fiber having a circular cross section of 6 denier 52 mm length: 80% by weight,
Heat-sealable polyester stable fiber having a core-sheath structure with a denier of 52 mm (melting type at 130 ° C.): 20 wt% is blended, carded, cross-layered, and subjected to a needle punching process to obtain a basis weight of 200 g / m ² . Get anti,
In the trimming process, a plurality of through holes 35a having a diameter of 10 mm were formed and formed into a thickness of 5 mm.

As the intermediate layer 36, a heat-fusible polyester stable fiber (130%) having a core-sheath structure having a core-sheath structure with a denier of 52% and a denier of 80% by weight was used. ° C
(Melting type): Blend, carding, cross-layer, and needle punching processes at 20% by weight to obtain a basis weight of 500 g
/ M ² , and molded to a thickness of 5 mm.

The intermediate layer 36 and the sound absorbing material layer 3
5 are sequentially laminated on the base material layer 34 so that the through holes 35a and the through holes 38 do not overlap with each other, and the sound absorbing material layer 35 is placed on the rear parcel so that the through holes 35a and the through holes 17a of the rear parcel 17 communicate with each other. 17 was attached to the lower surface.

[0158] A running test was conducted on the evaluation vehicle equipped with the interior carpet obtained as described above, and the noise and air permeability were evaluated. As a result, trunk room 11
Although the noise invading into the passenger compartment 20 from the outside was reduced, the air permeability was not secured because the weight of the intermediate layer 36 was large.

[0159]

COMPARATIVE EXAMPLE 4 The skin material layer 33 had the same material composition as in the first embodiment.

As the base layer 34, 6 denier 52 mm
Regular polyester stable fiber having a long round cross section: 80% by weight, heat-fusible polyester stable fiber having a core-sheath structure of 2 denier 52 mm long (130 ° C. melting type):
20% by weight was passed through blending, carding, cross layer, and needle punching steps to obtain a raw fabric having a basis weight of 300 g / m ² .

The skin material layer 33 and the base material layer 34 are subjected to a heat treatment step and a press forming step, so that the thickness of the base material layer 34 is a maximum of 5 mm in the area of the rear parcel 17 and a maximum of 10 mm in other areas. I did it. In the area of the rear parcel 17, a plurality of through holes 38 each having a diameter of 10 mm were formed by a trimming process.

Next, as the sound absorbing material layer 35 of the ventilation layer 37, similarly to the base material layer 34, a normal polyester stable fiber having a circular cross section of 6 denier and 52 mm length: 80% by weight,
Heat-sealable polyester stable fiber having a core-sheath structure with a denier of 52 mm (melting type at 130 ° C.): 20 wt% is blended, carded, cross-layered, and subjected to a needle punching process to obtain a basis weight of 200 g / m ² . Get anti,
In the trimming process, a plurality of through holes 35a having a diameter of 10 mm were formed and formed into a thickness of 5 mm.

As the intermediate layer 36, a heat-fusible polyester stable fiber (130%) having a core-sheath structure having a core-sheath structure having a denier of 100 denier and 52 mm length: 80% by weight and a round cross section having a denier of 52 mm was used. ° C
(Molten type): 20% by weight is blended, carded, cross-layered and passed through a needle punching process to obtain a basis weight of 1000
A raw material of g / m ² was obtained and molded to a thickness of 5 mm.

The intermediate layer 36 and the sound absorbing material layer 3
5 are sequentially laminated on the base material layer 34 so that the through holes 35a and the through holes 38 do not overlap with each other, and the sound absorbing material layer 35 is placed on the rear parcel so that the through holes 35a and the through holes 17a of the rear parcel 17 communicate with each other. 17 was attached to the lower surface.

A running test was performed on the evaluation vehicle equipped with the interior carpet obtained as described above, and the noise and air permeability were evaluated. As a result, trunk room 11
Although the noise invading into the passenger compartment 20 from the outside was reduced, the air permeability was not secured because the weight of the intermediate layer 36 was large.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a trunk room of an automobile according to the present invention.

FIG. 2 is a sectional view showing a trunk room of the automobile according to the present invention.

FIG. 3 is a cross-sectional view showing an interior carpet for an automobile according to the present invention.

FIG. 4 is a sectional view showing an interior carpet for a vehicle according to the present invention.

FIG. 5 is a cross-sectional view showing another embodiment of the car interior carpet according to the present invention.

FIG. 6 is a sectional view showing a conventional car interior carpet.

[Explanation of symbols]

 Reference Signs List 11 trunk room 12 floor panel 13 side panel 14 wheel house panel 15 rear panel 16 rear seat 17 rear parcel (partition plate) 17a third through hole 18 rear pillar 19 rear waist 20 car room 30 interior carpet 31 dense layer 32 skin layer 33 skin material layer 34 Base layer 35 Sound absorbing material layer 35a Second through hole 36 Intermediate layer 37 Ventilation layer 38 First through hole

Claims (11)

[Claims] 1. A skin layer comprising a dense layer formed of a resin material or a fiber material and a skin layer laminated on the dense layer, and a skin layer formed of a sound absorbing material and laminated on the dense layer of the skin layer. An interior carpet for automobiles, comprising a laminated structure with a base material layer. 2. The car interior carpet according to claim 1, wherein a gas permeable layer having an air permeability of 5% or more is laminated on the base material layer. 3. The sound-absorbing material layer has a density of 0.02.
^3. The automatic apparatus according to claim 2, wherein the intermediate layer is formed by lamination with an intermediate layer made of a dense and dense fibrous body of not more than g / cm ³ , and the intermediate layer is laminated on the base material layer. For interior carpet. 4. The skin material layer and the base material layer are provided with a first through hole penetrating both layers, and the sound absorbing material layer forming the ventilation layer is provided with a second through hole. The automobile interior according to claim 3, wherein the first through-hole and the second through-hole are provided at positions offset so as not to overlap each other in a direction perpendicular to the axis of the hole. carpet. 5. The car interior carpet according to claim 4, wherein said intermediate layer is cut out so as to connect said first through-hole and said second through-hole. 6. The resin material for forming the dense layer is polyethylene or rubber, and the sound absorbing material for forming the base layer is polyester fiber or felt. An interior carpet according to any one of the preceding claims. 7. A partition defined by a partition including at least a partition located in a rear portion of the seat and an upper portion of a rear surface of the seat and partitioning the passenger compartment, and attached to an inner surface of the partition. A trunk room of a vehicle having a carpet interior, wherein the carpet interior is
Lamination of a base material layer formed of a sound absorbing material and arranged to face the partition wall, and a skin material layer composed of a dense layer formed of a resin material or a fiber material and a skin material layer laminated on the dense layer A trunk room of a car characterized by having a structure. 8. The trunk room of an automobile according to claim 7, wherein a ventilation layer having an air permeability of 5% or more is disposed between said partition plate and said base material layer. 9. The air-permeable layer is formed by laminating a sound-absorbing material layer facing the partition plate and an intermediate layer made of a dense fiber body having a density of 0.02 g / cm ³ or less and facing the base material layer. The luggage compartment of an automobile according to claim 8, wherein: 10. In a region where the partition plate is located, a first through hole penetrating both the skin material layer and the base material layer is provided, and a second sound absorbing material layer forming the ventilation layer is provided with a second through hole. A through hole is provided, a third through hole is provided in the partition plate, and the first through hole and the second through hole are biased so as not to overlap each other in a direction perpendicular to the axis of the hole. The trunk room according to claim 9, wherein the second through-hole and the third through-hole are provided at positions where the second through-hole and the third through-hole communicate with each other. 11. The trunk room of an automobile according to claim 10, wherein said intermediate layer is cut out so as to connect said first through-hole and said second through-hole.