WO2023181566A1 - 車両用フロアカーペット - Google Patents

車両用フロアカーペット Download PDF

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Publication number
WO2023181566A1
WO2023181566A1 PCT/JP2022/047867 JP2022047867W WO2023181566A1 WO 2023181566 A1 WO2023181566 A1 WO 2023181566A1 JP 2022047867 W JP2022047867 W JP 2022047867W WO 2023181566 A1 WO2023181566 A1 WO 2023181566A1
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WIPO (PCT)
Prior art keywords
resin layer
floor carpet
carpet
partial resin
partial
Prior art date
Application number
PCT/JP2022/047867
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English (en)
French (fr)
Japanese (ja)
Inventor
新 田島
万里 岩城
宙矢 満永
Original Assignee
林テレンプ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 林テレンプ株式会社 filed Critical 林テレンプ株式会社
Priority to JP2024509771A priority Critical patent/JPWO2023181566A1/ja
Publication of WO2023181566A1 publication Critical patent/WO2023181566A1/ja

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N3/00—Arrangements or adaptations of other passenger fittings, not otherwise provided for
    • B60N3/04—Arrangements or adaptations of other passenger fittings, not otherwise provided for of floor mats or carpets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/08—Insulating elements, e.g. for sound insulation

Definitions

  • the present invention relates to a vehicle floor carpet having a three-dimensional shape.
  • Floor carpets installed on car body panels from floor panels to toeboards, etc. are known as carpets used in automobiles.
  • the floor carpet is molded into a three-dimensional shape to match the three-dimensional shape of the vehicle body panel.
  • the floor carpet has a carpet layer facing the vehicle interior, and a backing resin layer integrated with the back surface of the carpet layer.
  • Japanese Unexamined Patent Publication No. 8-150865 discloses that a separate sound insulating sheet is attached to the back surface of a flat part of a floor carpet.
  • the inclined toeboard part installed on the toeboard is located near the engine where the noise is generated. Therefore, the sound from the engine passes through the toeboard section and enters the passenger compartment.
  • the weight increases accordingly, but the sound insulation properties of the toeboard part are not taken into consideration.
  • the present invention discloses an improved vehicle floor carpet.
  • the vehicular floor carpet of the present invention is a vehicular floor carpet that is installed on the indoor side between a floor panel and an inclined toeboard, and includes: a carpet layer disposed on the surface of the vehicle floor carpet; a partial resin layer partially present on the back side of the carpet layer, In at least one opposing portion of the vehicle floor carpet that faces the toe board, the partial resin layer is present in an area that is 1/2 or more in area ratio to the back surface of the opposing portion.
  • the vehicle floor carpet of the present invention is a vehicle floor carpet having a three-dimensional shape, a carpet layer disposed on the surface of the vehicle floor carpet; a partial resin layer partially present on the back side of the carpet layer,
  • the partial resin layer has a mode in which it has a plurality of divided regions surrounded by grooves.
  • an improved vehicle floor carpet can be provided.
  • FIG. 1 is a perspective view schematically showing an example of a vehicle floor carpet.
  • FIG. 2 is a cross-sectional view schematically showing an example of a vertical cross section along the front-rear direction of a vehicle floor carpet.
  • FIG. 3 is a sectional view schematically showing an example of a cross section of a toeboard portion of a vehicle floor carpet.
  • FIG. 4 is a bottom view schematically showing an example of the back side of a vehicle floor carpet.
  • FIG. 5 is a diagram schematically showing an example of the back surface of the toe board section.
  • FIG. 6 is a diagram schematically showing an example of a method for manufacturing a vehicle floor carpet.
  • FIG. 1 is a perspective view schematically showing an example of a vehicle floor carpet.
  • FIG. 2 is a cross-sectional view schematically showing an example of a vertical cross section along the front-rear direction of a vehicle floor carpet.
  • FIG. 3 is a sectional view schematically showing an example of a cross section of a
  • FIG. 7 is a cross-sectional view schematically showing an example of a vertical cross section along the front-rear direction of a vehicle floor carpet including a cushioning material layer.
  • FIG. 8 is a diagram schematically showing an example of another method for manufacturing a vehicle floor carpet.
  • FIG. 9 is a diagram schematically showing another example of the back surface of the toe board section.
  • FIG. 10 is a sectional view schematically showing another example of the cross section of the toeboard section.
  • FIG. 11 is a cross-sectional view schematically showing an example of a vertical cross section of a vehicle floor carpet having ventilation holes in the backing resin layer.
  • FIG. 12 is a cross-sectional view schematically showing an example in which lifting of the floor carpet from the other part is suppressed when the temperature decreases.
  • the vehicle floor carpet 1 As illustrated in FIG. 2 and the like, the vehicle floor carpet 1 according to one embodiment of the present technology is installed on the indoor SP1 side between a floor panel 81 and an inclined toe board 82.
  • the present vehicle floor carpet 1 includes a carpet layer 10 disposed on the surface 1a of the vehicle floor carpet 1, and a partial resin layer 20 partially present on the back side of the carpet layer 10.
  • the partial resin layer 20 As illustrated in FIG. 5 etc., in at least one opposing portion 6 of the vehicle floor carpet 1 that faces the toe board 82, the partial resin layer 20 has an area ratio of 1/2 to the back surface 6b of the opposing portion 6. Exists in two or more areas.
  • the facing portion 6 facing the toe board 82 is located near the engine where the noise is generated. Since the partial resin layer 20 is present in at least one opposing portion 6 facing the toe board 82 in an area having an area ratio of 1/2 or more to the back surface 6b of the opposing portion 6, sound from the engine toward the indoor SP1 is efficiently blocked. Ru. Therefore, the above embodiment can provide a vehicle floor carpet that can efficiently improve sound insulation properties.
  • the partial resin layer may include a plurality of layers.
  • a partial resin layer with an area ratio of 1/2 or more may be present in one or more of these facing parts. Therefore, in the above case, some of the plurality of opposing parts may not have a partial resin layer, or may have a partial resin layer with an area ratio of less than 1/2.
  • the existence of the partial resin layer on the back side of the carpet layer is due to the fact that the partial resin layer is integrated with the back side of the carpet layer, and that the partial resin layer is connected to the back side of the carpet layer through a layer such as a backing resin layer or a cushioning material layer. This includes both being located on the back side of the carpet layer.
  • the partial resin layer may exist in a part of the opposing part where the partial resin layer exists, or may exist in the entire area of the opposing part where the partial resin layer exists. Note that the above-mentioned additional remarks are also applied to the following aspects.
  • the vehicle floor carpet 1 includes a main body portion 4 disposed corresponding to the floor panel 81 and the opposing portion 6, and disposed corresponding to the toe board 82.
  • the toe board portion 5 may be provided.
  • the toe board portion 5 may include an upright portion 7 that rises from the opposing portion 6 where the partial resin layer 20 is present toward the edge 7a.
  • the area ratio S2/S1 of the partial resin layer 20 on the facing portion 6 with respect to the back surface 6b of the facing portion 6 where the partial resin layer 20 is present is equal to
  • the area ratio of the partial resin layer 20 to the back surface 7b of 7 may be larger than the ratio S4/S3 of the partial resin layer 20 present in the upright portion 7.
  • the above embodiment can provide a suitable vehicle floor carpet that efficiently improves sound insulation properties.
  • the opposing portion refers to a portion of the toeboard portion of the vehicle floor carpet excluding the upright portion of the toeboard portion. This additional statement also applies to the following aspects.
  • the partial resin layer 20 may have a plurality of divided regions 22 surrounded by grooves 24. If the partial resin layer 20 is not divided into a plurality of divided regions 22, as illustrated in the upper part of FIG. Warping occurs, and the opposing portion 6 is likely to lift off from the opposing portion 83.
  • the partial resin layer 20 since the partial resin layer 20 has a plurality of divided regions 22 surrounded by the grooves 24, the contraction of the resin due to a temperature drop is divided, and it is possible to suppress the lifting of the floor carpet from the other part when the temperature drops. can.
  • the counterpart portion of the facing portion includes a cushioning material installed between the facing portion and the toe board, the toe board itself, and the like. This additional statement also applies to the following aspects.
  • the plurality of grooves 24 may be arranged in a grid pattern on the partial resin layer 20.
  • the divided regions 22 are regularly arranged, it is possible to further suppress the lifting of the floor carpet from the other part when the temperature drops.
  • the intervals L1 and L2 between the grooves 24 sandwiching the divided region 22 may be 10 to 50 mm.
  • the depth P1 (see FIG. 3) of the groove 24 may be 1.5 to 3.0 mm.
  • a portion containing a large amount of resin may lift up from the vehicle body panel due to contraction of the resin due to temperature drop.
  • the technique described in JP-A-8-150865 does not take into consideration the fact that the floor carpet lifts off the vehicle body panel due to shrinkage of the resin due to a decrease in temperature.
  • a vehicle floor carpet 1 according to another aspect of the present technology is a vehicle floor carpet 1 having a three-dimensional shape 2, and includes a carpet layer 10 disposed on a surface 1a of the vehicle floor carpet 1, and a carpet layer 10 disposed on a surface 1a of the vehicle floor carpet 1. It includes a partial resin layer 20 that is partially present on the back side of the layer 10.
  • the partial resin layer 20 has a plurality of divided regions 22 surrounded by grooves 24 .
  • the partial resin layer 20 is not divided into a plurality of divided regions 22, as illustrated in the upper part of FIG. 6 is warped, and the floor carpet 1 tends to be lifted up from the mating part 83.
  • the partial resin layer 20 since the partial resin layer 20 has a plurality of divided regions 22 surrounded by the grooves 24, the contraction of the resin due to a temperature drop is divided, and it is possible to suppress the lifting of the floor carpet from the other part when the temperature drops. can.
  • the three-dimensional shape of the vehicle floor carpet is such that the height difference exceeds the thickness of the portion of the vehicle floor carpet excluding the partial resin layer.
  • the thickness direction of a vehicle floor carpet having a three-dimensional shape is a direction perpendicular to the surface of the vehicle floor carpet. Therefore, the thickness direction of the vehicle floor carpet has different directions depending on the portion of the vehicle floor carpet.
  • FIG. 1 schematically illustrates a vehicle floor carpet 1 installed in an automobile.
  • FIG. 2 is a vertical sectional view schematically illustrating a main part of an automobile 90 having a floor carpet 1, and is a vertical sectional view taken along the front-rear direction D1 at a position passing through the partial resin layer 20 in the floor carpet 1 shown in FIG. is schematically illustrated.
  • a schematic enlarged view of a vertical cross section near the opening OP1 in the automobile 90 is shown.
  • FIG. 3 schematically illustrates a cross section of the toeboard portion 5 of the floor carpet 1.
  • FIG. 3 schematically illustrates a cross section of the toeboard portion 5 of the floor carpet 1.
  • FIG. 4 schematically illustrates the back surface 1b of the floor carpet 1.
  • FRONT, REAR, LEFT, RIGHT, UP, and DOWN indicate front, rear, left, right, top, and bottom, respectively. The left and right positional relationship is based on the direction in which the front of the vehicle 90 is viewed.
  • reference numeral D1 indicates the longitudinal direction of the automobile
  • reference numeral D2 indicates the lateral direction of the automobile
  • reference numeral D3 indicates the thickness direction of the floor carpet 1.
  • magnification ratios in the front-rear direction D1, the left-right direction D2, and the up-down direction may be different, and the figures may not match.
  • the thickness of each part is exaggerated.
  • a cushioning material 70 is installed on the interior side surface 80a of a vehicle body panel 80 in an automobile 90, and a floor carpet 1 having a three-dimensional shape 2 is installed on the cushioning material 70.
  • the vehicle body panel 80 shown in FIG. 2 includes a metal floor panel 81 that is arranged substantially horizontally as a whole, although it has unevenness (not shown), and a metal floor panel 81 that stands diagonally forward from a front edge 81a of the floor panel 81. It includes a manufactured toe board 82.
  • the vehicle body panel 80 may include a metal dash panel that stands up diagonally from the front edge of the toe board 82 to be more vertical.
  • the dash panel functions as a partition between the vehicle compartment (example of interior SP1) and the engine room in the automobile 90, and the toe board 82 functions as an inclined portion connecting the dash panel and the floor panel 81.
  • the cushioning material 70 shown in FIG. 2 includes a flat part 71 on the floor panel 81 and an inclined part 72 on the toe board 82.
  • the flat portion 71 refers to a portion of the cushioning material 70 that is disposed generally horizontally, and may have irregularities.
  • the cushioning material 70 is used for at least one of shock absorption, sound absorption, and sound insulation, and may be partially disposed on the vehicle body panel 80.
  • a fibrous material such as felt, a foamed resin such as a foamed thermoplastic resin or a polyurethane foam, a molded product of a crushed product of the foamed resin, a combination thereof, etc. can be used.
  • a foamed resin particle molded body in which a large number of foamed resin particles are fused may be placed on the inclined portion 72 on the toe board 82, with emphasis on shock absorption.
  • the floor carpet 1 on the cushioning material 70 is installed on the indoor SP1 side, spanning the floor panel 81 and the inclined toe board 82.
  • the floor carpet 1 includes a main body portion 4 disposed corresponding to a floor panel 81, and a facing portion 6 facing a toe board 82, and a toe board disposed corresponding to the toe board 82. It is equipped with part 5.
  • the main body part 4 and the toe board part 5 include a general part 30 along the side surface 80a of the vehicle interior of the vehicle body panel 80, and upright parts 7, 32 in which the surface 1a rises from the general part 30 toward the edges 7a, 34. We are prepared.
  • the standing portion 32 rises from the general portion 30 toward the edge 34
  • the toeboard portion 5 rises from the general portion 30 toward the edge 7a.
  • the general portion 30 is a flat portion that is generally horizontally arranged, although there are irregularities.
  • the toe board section 5 corresponds to the opposing section 6. Therefore, the toeboard portion 5 includes an upright portion 7 that rises from the opposing portion 6 where the partial resin layer 20 is present toward the edge 7a.
  • the partial resin layer 20 present in the facing portion 6 has a plurality of divided regions 22 surrounded by grooves 24.
  • the floor carpet 1 shown in FIGS. 1 and 4 includes a left part 1d and a right part 1e separated by a central recess 1c adapted to the console of an automobile 90, and a connecting part 1f located behind the central recess 1c.
  • the left portion 1d is located to the left of the central recess 1c and the connecting portion 1f.
  • the right portion 1e is located to the right of the central recess 1c and the connecting portion 1f.
  • the connecting portion 1f is connected from the left portion 1d to the right portion 1e at the rear portion of the floor carpet 1.
  • the left portion 1d and the right portion 1e each include a toe board portion 5 that stands obliquely forward from the front edge 4a of the main body portion 4.
  • Each toeboard section 5 includes the above-mentioned opposing section 6 and upright section 7.
  • the floor carpet 1 has a three-dimensional shape 2 that is press-molded (thermoformed) along vehicle structures such as consoles and rocker panels.
  • the three-dimensional shape 2 of the floor carpet 1 is such that the height difference exceeds the thickness of the portion of the floor carpet 1 excluding the partial resin layer 20.
  • the thickness direction D3 of the floor carpet 1 is a direction perpendicular to the surface 1a of the floor carpet 1, and has different directions depending on the portion of the floor carpet 1.
  • the three-dimensional shape 2 includes a three-dimensional shape 2a of the front surface 1a of the floor carpet 1 facing the indoor SP1, and a three-dimensional shape 2b of the back surface 1b of the floor carpet 1 opposite to the front surface 1a.
  • the floor carpet 1 may be transported from the manufacturer to the delivery destination while being folded at the bending portion 3 shown in FIG.
  • the bent portion 3 shown in FIG. 4 includes a bent portion 3a along the left-right direction D2 and a bent portion 3b along the front-back direction D1.
  • the left part 1d and right part 1e are bent so as to close the surface 1a using the bent part 3a as a base point, and the connecting part 1f is bent so as to align the toe board parts with the bent part 3b as a base point, the floor Carpet 1 becomes compact.
  • the floor carpet 1 has a plurality of openings OP1 penetrating in the thickness direction D3.
  • the multiple openings OP1 include an opening for inserting a mat hook, an opening for inserting a seat leg, an opening for attaching the floor carpet 1 to a rocker panel or console, and information such as a vehicle identification number (abbreviated as VIN) arranged behind it. slit SL1, etc.
  • the floor carpet 1 also includes an outwardly extending portion 36 on the edge 34. The extending portion 36 is used as a handle for holding the floor carpet 1 or the like.
  • the floor carpet 1 shown in FIGS. 2 and 3 includes a carpet layer 10 disposed on the front surface 1a of the floor carpet 1, and a backing resin integrated with the back surface 10b of the carpet layer 10. It includes a layer 15 and a partial resin layer 20 partially present on the back side of the backing resin layer 15. Therefore, the partial resin layer 20 partially exists on the back side of the carpet layer 10, and can also be called an additional resin layer.
  • the partial resin layer 20 shown in FIG. 2 partially exists on the back surface 15b of the backing resin layer 15 and is integrated with the backing resin layer 15.
  • the floor carpet 1 is molded into a three-dimensional shape 2 and includes a carpet layer 10, a backing resin layer 15, and a partial resin layer 20.
  • a partial resin layer 20 is formed in an area that is 1/2 or more in area ratio with respect to the back surface 6b. exists.
  • area ratio 1/2 or more is intended to express that the proportion of the partial resin layer 20 in the back surface 6b is greater than or equal to the proportion of the portion where the partial resin layer 20 does not exist. This is to express that the proportion of the partial resin layer 20 is relatively large.
  • one of the two opposing parts 6 may not have the partial resin layer 20, or may have a partial resin layer 20 with an area ratio of less than 1/2.
  • a partial resin layer 20 also exists on a part of the back surface of the main body part 4.
  • a partial resin layer 20 is present on the back surface of the main body 4 shown in FIG. .
  • the carpet layer 10 is made of a breathable fiber material, and provides the floor carpet 1 with characteristics such as design, good feel, abrasion resistance, and sound absorption.
  • a tufted carpet having a large number of piles on the surface 1a, a needle punched carpet having a large number of fluff on the surface 1a, etc. can be used.
  • a tufted carpet is formed by, for example, inserting pile threads into a base fabric such as a nonwoven fabric such as a spunbond nonwoven fabric or a knitted fabric made of various fibers using a tufting machine to raise the pile.
  • Needle-punched carpets are formed, for example, by piercing a nonwoven fabric with a large number of hooked needles and entangling the fibers to form fluff on the surface.
  • Synthetic fibers or the like can be used as the fibers constituting the carpet layer 10.
  • polyolefin fibers such as PP (polypropylene) fibers, polyamide fibers, polyester fibers such as PET (polyethylene terephthalate) fibers, acrylic fibers, etc. can be used.
  • the basis weight (weight per unit area) of the carpet layer 10 is not particularly limited, but may be, for example, about 150 to 1500 g/m 2 .
  • the backing resin layer 15 does not need to be provided on the floor carpet 1, but by being integrated with the back surface 10b of the carpet layer 10, the backing resin layer 15 has a shape-retaining function that maintains the three-dimensional shape 2 of the floor carpet 1, and can be provided in the indoor SP1. It exhibits a sound insulation function that suppresses noise from entering the room, a vibration damping function that suppresses vibration from entering the room SP1, and the like. At least a portion of the backing resin layer 15 may be impregnated into the carpet layer 10.
  • the partial resin layer 20 has a reinforcing function that partially increases the rigidity of the floor carpet 1, a sound insulation enhancement function that partially increases the sound insulation performance of the floor carpet 1, and a vibration damping enhancement function that partially increases the vibration damping performance of the floor carpet 1. , etc. A part of the partial resin layer 20 may be impregnated into the carpet layer 10.
  • thermoplastic resins include polyolefin resins such as PE (polyethylene) resins and PP (polypropylene) resins, olefinic thermoplastic elastomers, vinyl resins such as vinyl acetate resins, ethylene vinyl acetate resins, and vinyl chloride resins, acrylic resins, and AS (acrylonitrile resins).
  • PE polyethylene
  • PP polypropylene
  • vinyl resins such as vinyl acetate resins, ethylene vinyl acetate resins, and vinyl chloride resins
  • acrylic resins and AS (acrylonitrile resins).
  • AS acrylonitrile resins
  • Styrene Styrene
  • ABS acrylonitrile butadiene styrene
  • thermoplastic resin a thermoplastic resin having a low melting point of about 100 to 150° C. is preferable from the viewpoint of thermoformability.
  • inorganic fillers such as calcium carbonate, talc, barium sulfate, metal oxides, metal powder, etc. can be used.
  • the particle size of the filler is not particularly limited, but may be, for example, about 5 to 20 ⁇ m.
  • a high-density backing called massback may contain about 30 to 80% by weight of filler.
  • At least one of the backing resin layer 15 and the partial resin layer 20 may be formed from a synthetic resin that does not contain filler.
  • the backing resin layer 15 is formed from a synthetic resin containing a filler and the partial resin layer 20 is formed from a synthetic resin that does not contain a filler, it is possible to minimize the weight increase of the floor carpet 1 and to
  • the floor carpet 1 can be provided with a reinforcing function, a sound insulation enhancement function, a vibration damping enhancement function, etc.
  • the partial resin layer 20 may be formed from a synthetic resin containing a filler.
  • the resin for forming the partial resin layer 20 is a highly compatible resin, such as a resin of the same type as the resin used for the backing resin layer 15, from the point of view of integrating the partial resin layer 20 with the backing resin layer 15. preferable.
  • PE resin containing a filler for the backing resin layer 15 and use LDPE (low density polyethylene) resin that does not contain a filler for the partial resin layer 20.
  • LDPE low density polyethylene
  • the basis weight of the backing resin layer 15 is not particularly limited, but may be, for example, about 80 to 2000 g/m 2 . Further, the backing resin layer 15 may be composed of a plurality of layers. For example, the backing resin layer 15 includes a first backing resin layer integrated with the back surface 10b of the carpet layer 10, and a second backing resin layer integrated with the back surface of the first backing resin layer. It's okay to stay. The material of the second backing resin layer may be different from the material of the first backing resin layer. Different materials include cases where the base resin is the same but the filler content is different.
  • the area weight of the partial resin layer 20 is not particularly limited, but may be, for example, about 150 to 3000 g/m 2 .
  • the partial resin layer 20 may have a different basis weight depending on the part of the floor carpet 1.
  • the basis weight of the partial resin layer 20 present in the facing portion 6 is preferably larger than the basis weight of the partial resin layer 20 present in the main body portion 4 from the viewpoint of imparting high sound insulation performance.
  • the partial resin layers 20 that are connected into one the partial resin layers 20 may have different basis weights depending on the parts of the partial resin layers 20.
  • the partial resin layer 20 may be composed of a plurality of layers.
  • the partial resin layer 20 includes a first partial resin layer that is integrated with a part of the back surface 15 b of the backing resin layer 15 , and a first partial resin layer that is integrated with a part of the back surface 15 b of the backing resin layer 15 . It may also include a second partial resin layer integrated with the portion. The material of the second partial resin layer may be different from the material of the first partial resin layer.
  • the facing part 6 facing the toe board 82 is located near the engine where noise is generated, so it is preferable that the facing part 6 has a high ability to block noise.
  • the basis weight of the partial resin layer 20 present in the facing part 6 is larger than the basis weight of the partial resin layer 20 present in the main body part 4.
  • the inclined facing portion 6 is likely to be deformed such as warping, and a gap may occur due to being pushed by a finger from the indoor SP1. For this reason, it is preferable that the rigidity of the facing portion 6 is higher than the rigidity of the main body portion 4.
  • the basis weight of the partial resin layer 20 present in the facing portion 6 is larger than the basis weight of the partial resin layer 20 present in the main body portion 4.
  • the basis weight of the partial resin layer 20 in the facing part 6 becomes thicker than the partial resin layer 20 in the main body part 4.
  • the basis weight of the partial resin layer 20 present in the facing portion 6 is preferably 1000 to 3000 g/m 2 , more preferably 1200 to 2100 g/m 2 .
  • the opposing part 6 is caused by shrinkage of the resin due to temperature drop, as illustrated in the upper part of FIG. It may warp and rise from the mating part 83.
  • Temperature reduction means for example, a temperature drop from a high temperature during thermoforming to room temperature, or a drop from an environmental temperature of 10 to 30°C to an extremely low temperature of -30 to -10°C.
  • the counterpart portion 83 is the cushioning material 70 in the example shown in FIG. 2, it may also be the toe board 82.
  • FIG. 12 schematically illustrates a cross section of a toeboard portion 905 that includes a partial resin layer 20 surrounded by grooves 24 and without divided regions 22 .
  • the toe board portion 905 molded into the three-dimensional shape 2 has the resin contained in the partial resin layer 20 contracted due to a decrease in temperature in the portion where the partial resin layer 20 exists. As a result, it rises from the opponent part 83.
  • the upper part of FIG. 12 shows that floating F0 from the mating portion 83 is generated on the back surface 20b of the partial resin layer 20 (the back surface 1b of the floor carpet 1).
  • FIG. 5 schematically illustrates the back surface of the toe board portion 5.
  • FIG. 5 shows the toe board section 5 on the left side 1d and the toe board section 5 on the right side 1e together.
  • a portion of the plurality of divided regions 22 is shown. The details of the toeboard portion 5 including the partial resin layer 20 will be described below with reference to FIG. 3 and the like.
  • the partial resin layer 20 is present in an area that is 1/2 or more in area ratio to the back surface 6b of the facing part 6.
  • one of the two opposing parts 6 may not have the partial resin layer 20, or may have a partial resin layer 20 with an area ratio of less than 1/2.
  • the angle between the back surface 7b of the upright part 7 and the horizontal line H0 in the cross section of the toe board part 5 is ⁇
  • the upright part 7 of the toe board part 5 has an angle ⁇ of less than 15°. It can be defined as a large part.
  • the opposing portion 6 is a portion of the toeboard portion 5 where 0° ⁇ 15°.
  • the area ratio S2/S1 where the partial resin layer 20 is present is 1/2 or more.
  • the area ratio S2/S1 is larger than the area ratio of the partial resin layer 20 to the back surface of the main body 4.
  • the area ratio S2/S1 of the partial resin layer 20 in the facing portion 6 is S3.
  • a plurality of grooves 24 are arranged in a grid pattern.
  • the plurality of grooves 24 include a plurality of grooves 24a that are farther away from the front edge 4a of the main body part 4 as they move toward the left side, and a plurality of grooves 24b that become farther away from the front edge 4a of the main body part 4 as they move toward the right side.
  • the plurality of grooves 24a are arranged substantially in parallel and intersect with at least a portion of the plurality of grooves 24b.
  • the plurality of grooves 24b are arranged substantially in parallel and intersect with at least a portion of the plurality of grooves 24a.
  • the partial resin layer 20 in the opposing portion 6 has a plurality of parallelogram-shaped divided regions 22 surrounded by two grooves 24a and two grooves 24b. Many of the plurality of divided regions 22 are in contact with the inclined portion 72 of the cushioning material 70 shown in FIG. 1 .
  • FIG. 5 shows that the plurality of grooves 24a are orthogonal to the plurality of grooves 24b. Therefore, most of the plurality of divided regions 22 shown in FIG. 5 have a rectangular shape (for example, a square shape).
  • the facing part 6 is warped due to shrinkage of the resin due to temperature drop, and the facing part 6 is warped.
  • the portion 6 is likely to be lifted up from the mating portion 83 such as the cushioning material 70. Since the partial resin layer 20 in the opposing portion 6 shown in FIG. The contraction is divided. As a result, while good sound insulation properties are imparted to the opposing portion 6, lifting F0 of the opposing portion 6 from the mating portion 83 is suppressed when the temperature decreases, as shown in the lower part of FIG.
  • the divided regions 22 are regularly arranged, so that the opposing part 6 is lifted from the opposing part 83 when the temperature drops. F0 is effectively suppressed.
  • the floating F0 By suppressing floating F0, many of the plurality of divided regions 22 come into contact with the mating part 83, and generation of abnormal noise due to rubbing between the partial resin layer 20 and the mating part 83 is suppressed.
  • the counterpart portion 83 is a foamed resin particle molded body, the floating F0 is suppressed, thereby greatly suppressing the generation of abnormal noise.
  • the distance between the grooves 24a that sandwich the divided region 22 is L1
  • the distance between the grooves 24b that sandwich the divided region 22 is L2.
  • the distances L1 and L2 between the grooves 24 sandwiching the divided region 22 are preferably 10 to 50 mm, more preferably 20 to 40 mm.
  • the thickness of the portion of the partial resin layer 20 in the opposing portion 6 excluding the groove 24 is T1
  • the depth of the groove 24 is P1
  • the bottom of the groove 24 is Let the thickness of the partial resin layer 20 be P2
  • the width of the opening of the groove 24 be W1
  • the width of the bottom of the groove 24 be W2.
  • the depth P1 of the groove 24 is preferably shallower than the thickness T1 of the partial resin layer 20, and is preferably 1.5 to 3.0 mm, from the viewpoint of ensuring favorable sound insulation properties while suppressing the floating F0 of the opposing portion 6. .
  • the distances L1 and L2 between the grooves 24 and the depth P1 of the grooves 24 are within the above-mentioned ranges, good sound insulation properties are imparted to the opposing portion 6 while the opposing portion 6 is protected from the opposing portion 83 when the temperature drops.
  • the float F0 is preferably suppressed.
  • the thickness P2 of the bottom of the groove 24 is preferably from 0.1 to 1.0 mm, more preferably from 0.2 to 0.5 mm, from the viewpoint of ensuring favorable sound insulation properties while suppressing the floating F0 of the facing portion 6.
  • the thickness P2 of the bottom of the groove 24 is within the above range, good sound insulation can be obtained even when the floor carpet 1 is not provided with the backing resin layer 15.
  • the thickness of the part of the partial resin layer 20 that is impregnated into the carpet layer 10 is smaller than the thickness of the part other than the bottom of the groove 24 .
  • the bottom may be thicker.
  • the width W1 of the opening of the groove 24 can be, for example, about 3.0 to 5.0 mm. When W1>0, air enters the plurality of grooves 24, and sound absorbing properties are exhibited.
  • the width W2 of the bottom of the groove 24 can be, for example, about 0.5 to 2.0 mm.
  • each groove 24 is preferably such that it does not face either the front or rear of the vehicle 90 or the left or right, as shown in FIG. Even if each groove 24 is oriented to the front and back or left and right of the automobile 90, if the partial resin layer 20 is divided into a plurality of divided regions 22, the temperature will be higher than when the partial resin layer 20 is not divided into a plurality of divided regions 22. The floating F0 of the facing portion 6 from the mating portion 83 when lowered is suppressed.
  • FIG. 6 schematically illustrates a method for manufacturing the vehicle floor carpet 1 shown in FIGS. 1 to 5.
  • the manufacturing method shown in FIG. 6 includes the following steps (A1) and (B1).
  • A1 In a state where the raw material 50 including the carpet layer 10 disposed on the front surface 1a of the vehicle floor carpet 1 and the backing resin layer 15 on the back surface 10b of the carpet layer 10 is being transferred in the transfer direction D4. , while variably controlling the supply amount of the plurality of supply parts 120 at different positions in the width direction D5 perpendicular to the transfer direction D4, the partial resin 40 is partially supplied as the original material from the plurality of supply parts 120.
  • Partial resin supply step ST1 in which the resin is supplied onto the back surface of 50.
  • B1 The base material 50 and the partial resin 40 are formed so that the partial resin layer 20 that partially exists on the back surface 15b of the backing resin layer 15 and is integrated with the backing resin layer 15 is formed from the partial resin 40.
  • FIG. 6 shows a carpet manufacturing apparatus 100 suitable for manufacturing the floor carpet 1.
  • the carpet manufacturing apparatus 100 includes a transfer machine 110 that conveys the base material 50 in the transfer direction D4 with the back surface 15b facing upward, a plurality of supply units 120 that supplies partial resin 40 to the back surface 15b of the base material 50, a control unit 130, It is equipped with a heating machine (not shown), a press molding machine 200, a cutting machine (not shown), and the like.
  • the base material 50 includes a substantially flat carpet layer 10 having a three-dimensional shape and a substantially flat backing resin layer 15 having a three-dimensional shape.
  • the raw material 50 may be a long, lined raw material in which the carpet layer 10 and the backing resin layer 15 are laminated and wound into a roll.
  • the base material 50 in this specific example is a long lined raw material including a thermoplastic backing resin layer 15 .
  • the transport direction D4 of the base material 50 is the longitudinal direction of the base material 50.
  • the backing resin layer 15 contains a thermoplastic resin in an amount that causes the backing resin layer 15 to exhibit thermoplasticity, the backing resin layer 15 has thermoplasticity.
  • a known conveyor such as a belt conveyor can be used as the transfer device 110.
  • the backing resin layer 15 and the partial resin 40 have thermoplasticity, and the belt of the belt conveyor has a large number of ventilation holes, the backing resin layer 15 is preheated by hot air heating or the like to bring the partial resin 40 into a molten state. suitable for maintaining.
  • the partial resin 40 becomes a partial resin layer 20 that partially exists in the floor carpet 1. Therefore, the partial resin 40 can also be said to be an additional resin added to the backing resin layer 15.
  • a material for forming the partial resin layer 20 may be used. It is assumed that the partial resin 40 of this specific example has thermoplasticity. When the partial resin 40 contains a thermoplastic resin in an amount that causes the partial resin 40 to exhibit thermoplasticity, the partial resin 40 has thermoplasticity.
  • the plurality of supply units 120 are arranged in the width direction D5 of the raw material 50. Note that the plurality of supply units 120 may be arranged in a direction shifted from the width direction D5 as long as they are located at different positions in the width direction D5. The plurality of supply units 120 shown in FIG.
  • each supply unit 120 has a nozzle 126 that discharges the partial resin 40 in a molten state so that the discharge speed can be changed.
  • Being able to change the discharge speed of the partial resin 40 means that the discharge speed of the partial resin 40 may change to become faster or slower while the base material 50 is moving in the transfer direction D4. do. Therefore, the amount of the partial resin 40 supplied to the back surface of the base material 50 can be changed depending on the position in the transfer direction D4, and can also be changed depending on the position in the width direction D5.
  • the amount of the partial resin 40 supplied to the back surface of the base material 50 can be changed depending on the two-dimensional position in the plane along the transfer direction D4 and the width direction D5. If each supply unit 120 is provided with a heater that heats the partial resin 40, it is suitable for maintaining the partial resin 40 in a molten state.
  • the control unit 130 controls the transfer speed of the base material 50 by the transfer machine 110, the discharge speed of the partial resin 40 by each supply unit 120, and the like. Controlling the ejection speed includes setting the ejection speed to 0, that is, not allowing the supply section 120 to eject the partial resin 40 .
  • the control unit 130 individually controls the discharge speed of the partial resin 40 by the plurality of supply units 120. For example, as shown in FIG. 6, the control section 130 can cause the partial resin 40 to be discharged from the supply sections 122 and 124 without causing the partial resin 40 to be discharged from the supply sections 121, 123, and 125. It is possible to make the discharge speed of the partial resin 40 by the supply section 122 and the discharge speed of the partial resin 40 by the supply section 124 different.
  • FIG. 6 shows a partial resin 41 discharged onto the back surface 15b at a relatively high discharge speed, and a partial resin 42 discharged onto the back surface 15b at a relatively slow discharge speed.
  • the basis weight of the partial resin layer 20 formed from the partial resin 41 is larger than the basis weight of the partial resin layer 20 formed from the partial resin 42.
  • the control unit 130 controls the transfer speed of the raw material 50 by the transfer device 110, the discharge rate of the partial resin 40 by each supply unit 120, etc. so that the partial resin layer 20 shown in FIG. 4 is formed with a desired basis weight. do.
  • the control unit 130 may be a computer that includes a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), etc., and executes a control program.
  • a CPU Central Processing Unit
  • ROM Read Only Memory
  • RAM Random Access Memory
  • the source material 50 is transferred in the transfer direction D4 by the transfer device 110, and the partial resin 40 in a variably controlled supply amount from each supply section 120 partially covers the backing resin layer 15 in the source material 50. It is supplied to the back surface 15b.
  • the material including the base material 50 and the partial resin 40 is cut by a cutting machine (not shown) into a size that includes the floor carpet 1, and is carried into a heating machine (not shown).
  • the molding process ST2 shown in FIG. It includes a cutting process ST23 in which the paper is cut into pieces.
  • a heating machine (not shown) heats the material including the base material 50 and the partial resin 40 to a temperature slightly higher than the melting point of the thermoplastic resin contained in the base material 50 and the partial resin 40.
  • a suction heater hot air circulation heater
  • an infrared heater etc. can be used as the heating device. The heated material is carried into the press molding machine 200.
  • the press molding machine 200 press-forms the material heated in the heating step ST21.
  • Press molding is included in thermoforming.
  • a press molding machine 200 shown in FIG. 6 is provided with an upper mold 201 and a lower mold 202 that constitute a press mold so that they can be brought close to each other and separated from each other.
  • the upper mold 201 is a mold having a mold surface matching the shape of the back surface 1b of the floor carpet 1 on the opposing surface. Therefore, the mold surface of the upper mold 201 has an uneven shape that matches the plurality of divided regions 22 surrounded by the grooves 24 on the back surface 20b of the partial resin layer 20.
  • the mold surface of the upper mold 201 may have a shape for imprinting a mark such as a material mark or a CCC (China Compulsory Certificate) mark on the back surface 20b of the partial resin layer 20.
  • the lower mold 202 is a mold having a mold surface matching the shape of the surface 1a of the floor carpet 1 on an opposing surface. Therefore, the material including the base material 50 and the partial resin 40 is placed upside down between the molds 201 and 202.
  • the arrangement of the materials including the base material 50 and the partial resin 40 may be arranged in accordance with the positional relationship in which they are installed in the automobile 90. Press molding may be hot pressing accompanied by heating, or cold pressing without heating.
  • the pressing step ST22 may include a cooling step of cooling the press-molded material.
  • the cutting machine cuts the cooled press molded product into the shape of the floor carpet 1.
  • the cutting machine cuts the outer periphery of the press molded product, and cuts the press molded product so as to form an opening OP1 including a slit SL1 inside the outer periphery.
  • the floor carpet 1 shown in FIGS. 1 to 5 is obtained.
  • a cutting machine equipped with a cutting blade, a cutting machine that performs cutting using a water jet, etc. can be used.
  • the press-molded product can be cut by hand cutting using a cutter, in addition to cutting with a cutting blade or water jet cutting.
  • the partial resin 40 is partially supplied in a variably controlled supply amount from each of the plurality of supply sections 120 located at different positions in the width direction D5.
  • the raw material 50 is supplied onto the back surface thereof.
  • the partial resin layer 20 is formed from the partial resin 40, which is integrated with the back surface 15b of the backing resin layer 15, which is integrated with the back surface 10b of the carpet layer 10.
  • a floor carpet 1 having a three-dimensional shape 2 is manufactured. As shown in FIG. 2, the floor carpet 1 is installed on the indoor SP1 side, spanning the floor panel 81 and the inclined toe board 82.
  • the partial resin layer 20 is present in an area that is 1/2 or more in area ratio to the back surface 6b of the opposing portion 6. do. Thereby, the sound from the engine passing through the toe board 82 and heading toward the indoor SP1 is efficiently blocked. Therefore, this specific example can provide a vehicle floor carpet that can efficiently improve sound insulation properties. Further, since the partial resin layer 20 has a plurality of divided regions 22 surrounded by the grooves 24, the shrinkage of the resin due to a temperature drop is divided, as shown in the lower part of FIG. Therefore, in this specific example, it is possible to suppress the floating F0 of the floor carpet 1 from the mating portion 83 when the temperature drops.
  • the partial resin layer is formed with a constant basis weight in the transfer direction D4 of the base material 50, so the basis weight of the partial resin layer is partially changed. Less freedom.
  • the manufacturing method of this specific example is suitable for manufacturing a vehicle floor carpet 1 with increased rigidity while suppressing an increase in weight as much as possible.
  • Additional members may be added to the floor carpet 1 shown in FIGS. 1 to 5.
  • a separate member such as a cushioning material 70 may be attached to the back surface 1b of the floor carpet 1.
  • FIG. 7 schematically illustrates a vertical cross section along the front-rear direction D1 of the vehicle floor carpet 1 including the cushioning material layer 60 between the backing resin layer 15 and the partial resin layer 20.
  • a schematic enlarged view of a cross section near the groove 24 of the partial resin layer 20 in the toeboard portion 5 is shown in the lower part of FIG. 7 .
  • elements that are substantially the same as or similar to the elements shown in FIGS. 1 to 5 are given the reference numerals shown in FIGS. 1 to 5, and detailed description thereof will be omitted.
  • the three-dimensional shape of the surface 1a of the floor carpet 1 is the same as the three-dimensional shape 2a shown in FIG.
  • the partial resin layer 20 is integrated with the back surface 60b of the cushioning material layer 60, the arrangement of the partial resin layer 20 is the same as the arrangement of the partial resin layer 20 shown in FIG.
  • the materials mentioned above can be used for the carpet layer 10, the backing resin layer 15, and the partial resin layer 20.
  • the cushioning material layer 60 is integrated with the back surface 15b of the backing resin layer 15, which is integrated with the back surface 10b of the carpet layer 10.
  • the cushioning material layer 60 like the cushioning material 70 shown in FIG. good.
  • a fibrous material such as felt, a foamed resin such as a foamed thermoplastic resin or a polyurethane foam, a molded product of a crushed product of the foamed resin, a combination thereof, etc.
  • a fibrous material such as felt, a foamed resin such as a foamed thermoplastic resin or a polyurethane foam, a molded product of a crushed product of the foamed resin, a combination thereof, etc.
  • thermoplastic fibers, a combination of heat-resistant fibers and thermoplastic fibers, etc. can be used, and recycled waste fibers can also be used.
  • Inorganic fibers such as glass fibers can be used as the above-mentioned heat-resistant fibers.
  • thermoplastic fibers fibers of thermoplastic resin (including thermoplastic elastomer), fibers with additives added to thermoplastic resin, etc. can be used, and polyester fibers such as PET fibers, PP fibers and PE fibers can be used. Polyolefin fibers, polyamide fibers, combinations of these fibers, etc. can be used. Fibers with a conjugate structure such as a core-sheath structure or a side-by-side structure can also be used for the above-mentioned fiber material.
  • materials that can be used for the cushioning material layer 60 can also be used for the cushioning material 70 described above.
  • the basis weight of the cushioning material layer 60 is not particularly limited, but may be, for example, about 600 to 3000 g/m 2 .
  • the buffer material layer 60 may be composed of a plurality of layers.
  • the buffer layer 60 includes a first buffer layer integrated with the back surface 10b of the carpet layer 10, and a second buffer layer integrated with the back surface of the first buffer layer. It's okay to stay.
  • the material of the second cushioning layer may be different from the material of the first cushioning layer.
  • the partial resin layer 20 shown in FIG. 7 exists partially on the back surface 60b of the cushioning material layer 60 and is integrated with the back surface 60b of the cushioning material layer 60. Therefore, on the back surface 1b of the floor carpet 1, the back surface 20b of the partial resin layer 20 and the back surface 60b of the portion of the cushioning material layer 60 that is not covered with the partial resin layer 20 are exposed.
  • the partial resin layer 20 integrated with the back surface 60b of the cushioning material layer 60 exists partially on the back side of the backing resin layer 15.
  • FIG. 8 schematically illustrates a method for manufacturing the vehicle floor carpet 1 shown in FIG. 7.
  • the manufacturing method shown in FIG. 8 includes the following steps (A2) and (B2).
  • A2) A carpet layer 10 disposed on the front surface 1a of the vehicle floor carpet 1, a backing resin layer 15 on the back surface 10b of the carpet layer 10, and a cushioning material layer overlaid on the back surface 15b of the backing resin layer 15.
  • Partial resin supply step ST1 in which partial resin 40 is partially supplied onto the back surface of base material 50 from a plurality of supply units 120.
  • B2 The base material 50 and A molding step ST2 of molding the partial resin 40.
  • the floor carpet 1 including the cushioning material layer 60 can also be manufactured by the carpet manufacturing apparatus 100.
  • the carpet manufacturing apparatus 100 may include a laminating device that laminates the cushioning material layer 60 on the backing resin layer 15 of a long backing material including the carpet layer 10 and the backing resin layer 15. good.
  • the base material 50 shown in FIG. 8 is an elongated material in which a cushioning material layer 60 is laminated on a long backing resin layer 15 of a long backed original fabric including a thermoplastic backing resin layer 15.
  • the buffer material layer 60 shall contain thermoplastic resin.
  • the source material 50 is transferred in the transfer direction D4 by the transfer device 110, and the partial resin 40 in a variably controlled supply amount from each supply section 120 partially covers the buffer material layer 60 in the source material 50. It is supplied to the back surface 60b.
  • the material including the base material 50 and the partial resin 40 is cut by a cutting machine (not shown) into a size that includes the floor carpet 1, and is carried into a heating machine (not shown).
  • a heating machine (not shown) heats the material including the base material 50 and the partial resin 40 to a temperature slightly higher than the melting point of the thermoplastic resin contained in the base material 50 and the partial resin 40.
  • the press molding machine 200 press-forms the material heated in the heating step ST21.
  • the press-molded product taken out from between the molds 201 and 202 is carried into a cutting machine (not shown).
  • the cutting machine cuts the cooled press molded product into the shape of the floor carpet 1. Thereby, the floor carpet 1 shown in FIG. 7 is obtained.
  • the floor carpet 1 shown in FIG. 7 includes a partial resin layer 20 that is integrated with the back surface of a cushioning material layer 60 that is integrated with the back surface 15b of the backing resin layer 15, has a three-dimensional shape 2, and has a floor panel 81. and the inclined toe board 82, and is installed on the indoor SP1 side. Since the partial resin layer 20 is present in an area that is 1/2 or more in terms of area ratio to the back surface 6b of the opposing portion 6 of the floor carpet 1 shown in FIG. 7, the sound insulation properties are efficiently improved. Furthermore, since the partial resin layer 20 has a plurality of divided regions 22 surrounded by the grooves 24, lifting F0 of the floor carpet 1 from the mating portion 83 is suppressed when the temperature drops, as shown in the lower part of FIG.
  • the partial resin layer 20 with an area ratio of 1/2 or more may be present in the opposing part 6 of the right part 1e instead of in the opposing part 6 of the left part 1d of the floor carpet 1, or it may be present in the opposing part 6 of the right part 1e of the floor carpet 1. It may not be present in the facing portion 6 of the left portion 1e but may be present in the facing portion 6 of the left portion 1d.
  • the thickness of the partial resin layer 20 may gradually become thinner toward the edge of the partial resin layer 20 within a predetermined range (for example, about 30 to 70 mm) from the edge of the partial resin layer 20. This suppresses bending (creating wrinkles) starting from the edge of the partial resin layer 20.
  • a partial resin layer 20 having a plurality of divided regions 22 surrounded by grooves 24 may be present in the main body portion 4 . If there is a partial resin layer 20 having a plurality of divided regions 22 surrounded by grooves 24 in any part of the floor carpet 1, the effect of suppressing the lifting F0 of the floor carpet 1 from the other part 83 when the temperature decreases is achieved. can get. Therefore, the vehicle floor carpet to which the present invention can be applied is not limited to a floor carpet installed on the floor of a vehicle compartment, but may also be a floor carpet installed on the floor of a luggage compartment.
  • the partial resin layer 20 is present in an area having an area ratio of 1/2 or more to the back surface 6b in at least one facing portion 6 included in the floor carpet 1, the partial resin layer 20 is not divided into a plurality of divided regions 22. However, the effect of efficiently improving sound insulation properties can be obtained.
  • FIG. 9 schematically shows another example of the back surface of the toe board portion 5.
  • the plurality of grooves 24 shown in FIG. 9 are arranged in a honeycomb shape. Further, the plurality of grooves 24 may be arranged so that the plurality of divided regions 22 form a parallelogram excluding a square, the plurality of grooves 24 may be arranged so that the plurality of divided regions 22 form a triangle, The divided regions 22 may be arranged to include a plurality of shapes. As a result of tests, it was found that even when the divided regions 22 are hexagonal or pentagonal as shown in FIG.
  • the plurality of grooves 24 are arranged in a lattice pattern on the partial resin layer 20, and each groove 24 is oriented not toward the front or rear of the automobile 90 nor the left or right. , is highly effective in suppressing the lifting of the floor carpet 1 from the mating part 83 when the temperature drops.
  • FIG. 10 schematically shows another example of the cross section of the toe board portion 5.
  • the depth P1 of the groove 24 shown in FIG. 10 is the same as the thickness T1 of the portion of the partial resin layer 20 in the opposing portion 6 excluding the groove 24.
  • the bottom of the groove 24 becomes the backing resin layer 15. Since the bottom of the groove 24 is the lining resin layer 15, good sound insulation properties are imparted to the opposing portion 6, while lifting F0 of the opposing portion 6 from the opposing portion 83 when the temperature drops is preferably suppressed.
  • FIG. 11 is a vertical sectional view schematically illustrating a main part of the vehicle floor carpet 1 having a plurality of ventilation holes 18 in the backing resin layer 15.
  • the backing resin layer 15 shown in FIG. 11 has a plurality of ventilation holes 18 penetrating in the thickness direction D3, and exhibits a sound absorption function by circulating air between the carpet layer 10 and the cushioning material 70.
  • the floor carpet 1 provided with the breathable backing resin layer 15 has high sound absorption properties, it also has the property that sound easily passes through the back surface 1b into the room SP1.
  • the toeboard section 5 located near the engine where the sound is generated includes a partial resin layer 20 that is integrated with the back surface 15b of the lining resin layer 15 having the ventilation holes 18.
  • the floor carpet 1 exhibits a high sound absorbing function due to the ventilation holes 18 in the portion where the partial resin layer 20 is not present, and a high sound insulating function due to the partial resin layer 20 present in the toeboard portion 5.
  • the floor carpet 1 includes the backing resin layer 15 having a plurality of ventilation holes 18 penetrating in the thickness direction D3, and the partial resin layer 20 partially existing on the back side of the backing resin layer 15. Increase is suppressed as much as possible, and it has high rigidity, high sound absorption, and high sound insulation.
  • the backing resin layer 15 of the floor carpet 1 shown in FIG. 7 has a plurality of ventilation holes, the above-mentioned effects can be obtained.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Passenger Equipment (AREA)
PCT/JP2022/047867 2022-03-22 2022-12-26 車両用フロアカーペット WO2023181566A1 (ja)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61115755U (en]) * 1984-12-29 1986-07-22
JPS62152837U (en]) * 1986-03-20 1987-09-28
JPH11202873A (ja) * 1998-01-19 1999-07-30 Nissan Motor Co Ltd 遮音材
JP2005145356A (ja) * 2003-11-19 2005-06-09 Hayashi Engineering Inc 自動車用フロア敷設体
JP2007001373A (ja) * 2005-06-22 2007-01-11 Hayashi Telempu Co Ltd 衝撃吸収体
JP2011173446A (ja) * 2010-02-23 2011-09-08 Hayashi Engineering Inc 車両用成形敷設内装材

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61115755U (en]) * 1984-12-29 1986-07-22
JPS62152837U (en]) * 1986-03-20 1987-09-28
JPH11202873A (ja) * 1998-01-19 1999-07-30 Nissan Motor Co Ltd 遮音材
JP2005145356A (ja) * 2003-11-19 2005-06-09 Hayashi Engineering Inc 自動車用フロア敷設体
JP2007001373A (ja) * 2005-06-22 2007-01-11 Hayashi Telempu Co Ltd 衝撃吸収体
JP2011173446A (ja) * 2010-02-23 2011-09-08 Hayashi Engineering Inc 車両用成形敷設内装材

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