JP2015110363A - Vehicle carpet with capture agent - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle carpet with a capture agent which reduces a volatile organic compound, such as acetaldehyde, existing in a passenger compartment without impairing the visual quality of a design surface.SOLUTION: A vehicle carpet 6 with a capture agent of the invention includes: a carpet 61 having a rear surface 61a facing a floor surface 2a of a passenger compartment 1 and a design surface 61b located at the opposite side of the rear surface 61a and facing the passenger compartment inner side, the carpet 61 which is carpeted so as to cover the floor surface 2a; and a capture agent 7 which is adhered to the carpet 61 and captures a volatile organic compound existing in the passenger compartment 1. The capture agent 7 is adhered to a non-contact part S formed by a portion of the design surface 61b where a contact with an occupant is inhibited.

Description

  The present invention relates to a vehicle carpet with a trapping agent.

  Conventionally, various measures have been tried to reduce volatile organic compounds (VOC) present in the passenger compartment. In particular, among VOCs, acetaldehyde has a situation that it is difficult to specify a generation source, and the importance of the reduction measures is increasing.

  For example, Patent Document 1 discloses a technique for decomposing a VOC in a vehicle interior when a deodorizing filter provided in an air conditioner carries a substance that decomposes VOC and filtering air in the vehicle interior with the deodorizing filter. Yes.

  As described above, although the technology using the air conditioner has an effect of reducing the VOC, there are problems that the cost is high and the VOC cannot be reduced when the air conditioner cannot be used. Therefore, in recent years, as disclosed in Patent Documents 2 and 3, a technique for reducing the VOC in the vehicle interior by attaching a substance for capturing VOC to the carpet in the vehicle interior has been proposed.

JP 2005-138632 A Japanese Patent No. 5019426 JP 2008-255507 A

  However, even if a substance for capturing VOCs is attached to the vehicle carpet, the occupant comes into contact with the vehicle carpet by placing his / her foot on the vehicle when getting on / off the vehicle. There was a risk of it. Further, when the substance is adhered to the design surface of the vehicle carpet, the appearance of the design surface may be deteriorated, for example, the carpet surface may be discolored.

  The objective of this invention is providing the carpet for vehicles with a trapping agent which can reduce volatile organic compounds, such as acetaldehyde which exists in a vehicle interior, without impairing the appearance of a design surface.

  The carpet for a vehicle with a trapping agent according to the present invention has a back surface facing the floor surface of the passenger compartment, and a design surface that is opposite to the rear surface and faces the interior of the passenger compartment, and is laid so as to cover the floor surface. A carpet for a vehicle with a capture agent, comprising: a carpet to be removed; and a capture agent attached to the carpet and capturing a volatile organic compound present in a vehicle interior, wherein the capture agent is an occupant of the design surface. It adheres to the non-contact part which consists of a part by which a contact with is suppressed.

  The above-mentioned carpet for a vehicle with a scavenger has the above-described configuration, so that even if the carpet is discolored or the like, the possibility of entering the occupant's field of view is reduced, and the appearance of the design surface is not deteriorated. The volatile organic compound can be reduced. Since the scavenger is adhered to the non-contact portion, the scavenger is prevented from peeling off from the carpet, and the sustainability of the function of the scavenger is also improved.

  In the carpet for a vehicle with a capturing agent, the capturing agent is preferably attached to the design surface by applying a solution in which the capturing agent is dispersed in a solvent. Thus, if the said capture | acquisition agent is prepared as a solution, the said capture | acquisition agent can be easily made to adhere to the non-contact part of a carpet.

  In the carpet for a vehicle with a capturing agent, it is preferable that the non-contact portion is disposed below a seat installed in a vehicle compartment so that a gap is formed between the design surface and the carpet. If a non-contact part is set in such a place, a sufficient space for attaching an amount of the scavenger necessary for capturing the volatile organic compound is secured.

  In the vehicle carpet with the scavenger, the scavenger captures a specific volatile organic compound having a specific gravity greater than air among the volatile organic compounds, and the specific volatile organic compound is acetaldehyde, formaldehyde or the like. Volatile aldehydes are preferred. Since the vehicle carpet with a scavenger is laid on the floor side of the passenger compartment, it is suitable for capturing specific volatile organic compounds such as volatile aldehydes that easily collect on the bottom side of the passenger compartment.

  ADVANTAGE OF THE INVENTION According to this invention, the carpet for vehicles with a trapping agent which can reduce volatile organic compounds, such as acetaldehyde which exists in a vehicle interior, without impairing the appearance of a design surface can be provided.

Explanatory diagram schematically showing the cross-sectional configuration of the passenger compartment as viewed from the front of the vehicle Explanatory drawing which expanded the cross-sectional structure of the carpet for vehicles with a trapping agent, and expressed typically Top view of carpet AA line sectional view of FIG. Explanatory drawing schematically showing the method of performance evaluation test Explanatory drawing of the graph which shows the result of the performance-evaluation test of the carpet for vehicles with a capturing agent, and its comparison object

<Embodiment 1>
Hereinafter, Embodiment 1 of the present invention will be described with reference to FIGS. 1 to 6. In the present embodiment, a vehicle carpet with a trapping agent laid on the floor of a passenger compartment will be described as an example. FIG. 1 is an explanatory view schematically showing a cross-sectional configuration in the passenger compartment 1 as viewed from the front of the vehicle. As shown in FIG. 1, the passenger compartment 1 includes a portion surrounded by a floor material (floor panel) 2, a ceiling material (roof panel) 3, vehicle doors 4, 4, and the like. 1 is the vehicle right side, and the right side of FIG. 1 is the vehicle left side.

  The flooring 2 is disposed below the passenger compartment 1 and is made of a substantially plate-shaped metal member that constitutes the floor of the passenger compartment 1. A carpet 6 for a vehicle with a trapping agent is attached to the flooring 2 so as to cover the surface 2 a of the flooring 2. Details of the vehicle carpet 6 with a capturing agent will be described later. The vehicle doors 4, 4 are disposed at both ends of the floor material 2 in the vehicle width direction and constitute the side walls of the passenger compartment 1. The ceiling material 3 is made of a substantially plate-like metal member that is disposed above the passenger compartment 1 and that constitutes the ceiling of the passenger compartment 1.

  As shown in FIG. 1, two front seats 5, 5 are installed on the flooring 2 in the vehicle compartment 1 so as to be aligned in the vehicle width direction. One front seat 5 shown on the left side of FIG. 1 is a driver's seat 5a, and the other front seat 5 shown on the right side is a passenger seat 5b. A center console (not shown) is disposed between the adjacent front seats 2 and 2. The front seats 2 and 2 include slide devices 71 and 71, respectively, so that the front seats 2 and 2 can slide in the vehicle front-rear direction.

  The slide device 71 includes a pair of seat rails 71a and 71a and a pair of slide members 71b and 71b. The seat rails 71a and 71a are made of a pair of long metal members arranged in parallel to each other along the vehicle longitudinal direction. The seat rails 71a and 71a are fixed to the flooring 2 so as to maintain a predetermined interval in the vehicle width direction. The vehicle carpet 6 with a trapping agent is formed with slit-shaped holes for exposing the seat rails 71a.

  The slide members 71b and 71b are made of a pair of long metal members fixed to the lower end portion of the front seat 5 (the lower end portion of the seat cushion) so as to be fitted to the seat rails 71a and 71a. When the slide members 71b and 71b slide and move along the seat rails 71a and 71a, the front seat 5 can move in the vehicle front-rear direction.

  FIG. 2 is an explanatory diagram schematically showing an enlarged cross-sectional configuration of the carpet 6 for a vehicle with a trapping agent. The vehicle carpet 6 with a trapping agent includes a carpet 61 laid so as to cover the floor surface of the passenger compartment 1 (the surface 2 a of the flooring 2), and a trapping agent 7 attached to the carpet 61.

  The carpet 61 is generally used as a vehicle floor carpet such as a needle punch carpet. FIG. 2 shows an example of the carpet 61. As shown in FIG. 2, the carpet 61 mainly includes a backing layer 62, an intermediate layer 63 containing latex laminated on the backing layer 62, and a surface layer 64 composed of a number of pile yarns 64 a raised from the intermediate layer 63. And.

  The backing layer 62 is a so-called secondary base cloth, and is made of a cloth made of resin such as polyethylene. The backing layer 62 is a portion facing the floor surface (the front surface 2a of the flooring 2) when the vehicle carpet 6 with a capturing agent is installed in the passenger compartment 1, and constitutes the back surface 61a of the carpet 61. .

  The intermediate layer 63 includes a primary base fabric and latex for preventing the pile yarn 64a implanted in the primary base fabric from being needled. The pile yarn 64a is made of a polyester fiber such as PET. The surface layer 64 is a portion facing the inside of the vehicle compartment 1 when the vehicle carpet 6 with a capturing agent is installed in the vehicle compartment 1, and constitutes a design surface 61 b of the carpet 61.

  The scavenger 7 is a substance that adsorbs and captures volatile aldehydes such as acetaldehyde and formaldehyde present in the passenger compartment 1. The capturing agent 7 mainly includes a capturing component for capturing volatile aldehydes and a support for supporting the capturing component.

  The capture component is not particularly limited as long as it can capture volatile aldehydes such as acetaldehyde, and is appropriately selected from known ones according to the purpose. Examples of the capture component include amine compounds that can undergo a Schiff reaction with volatile aldehydes.

  The carrier is not particularly limited as long as it can be carried without impairing the function of the capturing component, and is appropriately selected from known ones. Examples of the support include powdery inorganic porous materials such as zeolite, titanium / zinc composite oxide, and silicon / zinc composite oxide. In addition, there is no restriction | limiting in particular as a method to carry | support a capture | acquisition component on a support body, It selects suitably from well-known things.

  The scavenger 7 preferably has heat resistance that can withstand the temperature at which the carpet 61 is formed. For example, when the carpet 61 is heated to 150 to 160 ° C. during molding, the heat resistant temperature required for the scavenger 7 is 160 ° C. or higher.

  Examples of the scavenger 7 include those marketed under the trade name “Kesmon (registered trademark)” (manufactured by Toagosei Co., Ltd.).

  The scavenger 7 is prepared in the form of a powder having a particle size of about several tens of μm. The powdery capturing agent 7 is dispersed in a predetermined solvent and applied to the design surface 61b of the carpet 61 in a solution state.

  The scavenger 7 is attached only to the non-contact portion S that is a portion of the design surface 61 b of the carpet 61 that is prevented from contacting the occupant. Here, the non-contact portion S will be described with reference to FIGS. 3 and 4. FIG. 3 is a plan view of the carpet 61, and FIG. 4 is a cross-sectional view taken along line AA of FIG. The carpet 61 of the present embodiment includes a right main body portion 65 that covers the floor surface of the passenger compartment 1 on the driver's seat 5a side (right side of the vehicle) and a left main body that covers the floor surface of the passenger compartment 1 on the passenger seat 5b side (left side of the vehicle). And a central main body 67 connecting the right main body 65 and the left main body 66 on the vehicle rear side. As shown in FIG. 4, the center main body 67 has a shape that rises like a mountain following the shape of the floor surface of the passenger compartment 1.

  Four non-contact portions S (S1 to S4) are provided on the design surface 61b of the carpet 61. The non-contact portion S <b> 1 is provided at a substantially central portion of the right main body portion 65. This non-contact part S1 is a part (projection part of a seat cushion) arrange | positioned below the seat cushion of the driver's seat 5a among the design surfaces 61b. The seat cushion of the driver's seat 5 a is opposed to the design surface 61 b by the slide device 71 with a certain distance from the carpet 61. Therefore, the air permeability between the seat cushion and the carpet 61 is ensured. In addition, the design surface 61b directly below the seat cushion is covered with the seat cushion and is difficult to contact the occupant. As described above, a portion of the design surface 61b that is ensured to be air-permeable and that is prevented from being in contact with the occupant by the driver's seat 5a (seat cushion) is defined as a non-contact portion S1. Similarly, a non-contact portion S2 disposed below the seat cushion of the passenger seat 5b is also provided in the substantially central portion of the left main body portion 66.

  In addition, as the non-contact portion S, a non-contact portion S3 is provided at a front end portion 68 of the right main body portion 65 on the vehicle front side, and a non-contact portion S4 is provided at a front end portion 69 of the left main body portion 66 on the vehicle front side. It has been. Each of the front end portions 68 and 69 is a portion of the carpet 61 that gently rises upward from the floor surface of the passenger compartment 1 on the front side of the vehicle, and from the position of the feet of the occupant seated on the front seat 5 Is also arranged generally upward. The design surface 61b in the tip portions 68 and 69 is also a place where contact with the occupant is suppressed, and air permeability is ensured. Thus, in this embodiment, you may provide the non-contact part S (S3, S4) also in the part of the carpet 61 which stood | started up from the horizontal part of the floor surface of the compartment 1. As shown in FIG.

  As a method of attaching the capturing agent 7 to the non-contact portion S of the carpet 61, for example, as described above, a solution in which the capturing agent 7 is dispersed in a predetermined solvent is sprayed using a spray gun or the like, or brushed. A known method such as coating may be used. As a coating method, spray coating is preferable because it is easy to minimize the amount of the scavenger 7 attached to the design surface 61b (non-contact portion S). In order to make the capture agent 7 easily adhere to the design surface 61b (the pile yarn 64a of the surface layer 64) of the carpet 61, even if an adhesive component is added to the solvent to such an extent that the function of the capture agent 7 is not impaired. Good.

For example, when a solution in which the capture agent 7 is dispersed is applied to the carpet 61 using a spray gun, the capture agent 7 can be adhered to the non-contact portion S as fine particles having a particle size of about 20 μm (application amount). : 4 g / m ² ). With such an application amount, even if the capturing agent 7 is adhered on the design surface 61b, the capturing agent 7 is not conspicuous, and the appearance (aesthetics) of the design surface 61b is prevented from being impaired.

  When applying the solution containing the capture agent 7 to the non-contact portion S of the carpet 61, the design surface 61b other than the non-contact portion S may be covered with a predetermined masking material to protect it. In addition, if the said solution containing the capture | acquisition agent 7 is apply | coated by the above spray application, even if it protrudes from the non-contact part S, it will be suppressed that the capture | acquisition agent 7 stains the design surface 61b.

  The solution containing the scavenger 7 may be applied to the non-contact portion S when the carpet 61 is in the final form, or may be applied to the surface layer 64 before the carpet 61 is completed.

  In addition, the non-contact part S mentioned above is a part which is not normally visually recognized from the passenger | crew in the compartment 1. As shown in FIG. Therefore, even if a large amount of the capturing agent 7 is attached to the non-contact portion S, the design surface 61b of the carpet 61 is not substantially damaged.

  Volatile aldehydes such as acetaldehyde and formaldehyde tend to accumulate on the floor side of the passenger compartment 1 because the specific gravity is greater than that of air. For example, when the air conditioner is not operated, it is easy to accumulate on the floor side of the passenger compartment 1 in particular. Since the vehicle carpet 6 with a scavenger according to the present embodiment is installed in the vehicle compartment 1 so as to cover the floor surface of the vehicle compartment 1, volatile aldehydes such as acetaldehyde can be efficiently captured.

[Performance evaluation test]
Next, a performance evaluation test performed on the vehicle carpet 6 with a capturing agent according to the present embodiment will be described. FIG. 5 is an explanatory diagram schematically showing a method of the performance evaluation test. The performance evaluation test was performed according to the following procedure.

As shown in FIG. 5, a carpet 6 for a vehicle with a trapping agent cut out to a predetermined size was laid on the bottom of the sealed container 8 having a predetermined volume. And the front seat 5 for a test | inspection was arrange | positioned on that with the support stand 71A equivalent to the slide apparatus 71 interposed. In this manner, the seat cushion 51 of the front seat 5 is arranged in a state of being arranged above the carpet 6 for a trapping agent with a predetermined gap while facing the non-contact portion S. In addition, the capture agent 7 (trade name “Kesmon (registered trademark)” (manufactured by Toagosei Co., Ltd.)) of 4 g / m ² is applied to the carpet 6 (carpet 61) with the capture agent facing the seat cushion 51. It is attached in quantity.

  After the vehicle carpet 6 with a trapping agent and the front seat 5 were set in the sealed container 8, the temperature in the sealed container 8 was maintained at 40 ° C. for 4.5 hours, and then left at room temperature for 24 hours.

  The generated amount (concentration) of acetaldehyde in the sealed container 8 after 4.5 hours and the generated amount (concentration) of acetaldehyde in the sealed container 8 after standing at room temperature (after 28.5 hours from the start) are expressed as DNPH. Derivatized with (2,4-dinitrophenylhydrazine) and detected by HPLC (high performance liquid chromatography). The source of acetaldehyde is mainly a urethane cushion material contained in the front seat 5. The result of the performance evaluation test of the carpet 6 for a vehicle with a scavenger is shown in the graph of FIG.

  As a comparative test, the amount (concentration) of acetaldehyde was similarly detected when a carpet 61 to which the capture agent 7 was not attached was used instead of the vehicle carpet 6 with the capture agent. The results are shown in the graph of FIG.

FIG. 6 is an explanatory diagram of a graph showing the results of a performance evaluation test for a vehicle carpet with a scavenger and a comparative example thereof. The vertical axis of the graph shown in FIG. 6 represents the amount of acetaldehyde generated (concentration: μg / m ³ ). In FIG. 6, the bar graph indicated by reference numeral (1) is a measurement result after 4.5 hours at 40 ° C. in the comparative test, and the bar graph indicated by reference numeral (2) indicates the performance of the carpet 6 for a vehicle with a trapping agent. It is a measurement result 4.5 hours afterward in 40 degreeC in an evaluation test. Moreover, in FIG. 6, the bar graph shown by the code | symbol (3) is a measurement result after 24 hours at room temperature in a comparative test, and the bar graph shown by the code | symbol (4) is performance evaluation of the carpet 6 for vehicles with a trapping agent. It is a measurement result after 24 hours at room temperature in the test.

  As shown in FIG. 6, in the carpet 6 with a trapping agent of the present embodiment, the amount of acetaldehyde generated after 4.5 hours (40 ° C.) is ½ or less compared to the comparison target, and further 24 It was confirmed that the amount of acetaldehyde generated after time (room temperature) was 1/10 or less. In the comparison object, although acetaldehyde in the sealed container 8 continues to increase with the passage of time, the carpet 6 for a vehicle with a trapping agent according to the present embodiment reliably adsorbs acetaldehyde, and the inside of the sealed container 8 It was confirmed that the concentration of acetaldehyde was kept low.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.

  (1) In the above embodiment, the scavenger is exemplified by those that chemically adsorb and trap volatile aldehydes. In other embodiments, the scavenger is volatile by physical adsorption such as activated carbon. It may capture aldehydes. However, for the reason of reliably adsorbing volatile aldehydes, the scavenger is preferably chemically adsorbed.

  (2) In the above embodiment, the vehicle carpet with a scavenger was fixed to the floor surface of the passenger compartment 1, but the floor surface of the passenger compartment 1 and the like, as long as the object of the present invention is not impaired. Alternatively, a non-contact portion may be set on the mat-like member that can be attached to and detached from, and the capturing agent may be attached to the non-contact portion.

  DESCRIPTION OF SYMBOLS 1 ... Car compartment, 2 ... Floor material, 2a ... Floor surface (surface of floor material) 3 ... Ceiling material, 4 ... Vehicle door, 5 ... Front seat, 5a ... Driver's seat, 5b ... Passenger seat, 6 ... Capture agent Car carpet with 61, carpet, 61a ... back surface of carpet, 61b ... design surface of carpet, 7 ... capture agent, 71 ... slide device, 71a ... seat rail, 71b ... slide member, 8 ... sealed container, S ... non Contact area

Claims (4)

A carpet having a back surface facing the floor surface of the passenger compartment, and a design surface on the opposite side of the rear surface and facing the interior of the passenger compartment, and laid to cover the floor surface;
A carpet for a vehicle with a capture agent, comprising a capture agent attached to the carpet and capturing a volatile organic compound present in a vehicle interior;
The carpet for a vehicle with a capture agent, wherein the capture agent is attached to a non-contact portion formed of a portion of the design surface where contact with an occupant is suppressed.   The carpet for a vehicle with a capture agent according to claim 1, wherein the capture agent is attached to the design surface by applying a solution in which the capture agent is dispersed in a solvent.   The said non-contact part is arrange | positioned under the sheet | seat installed in a vehicle interior so that a clearance gap may be formed between the said carpets among the said design surfaces, The carpet for vehicles with a trapping agent of Claim 1 or 2 . The scavenger captures a specific volatile organic compound having a specific gravity greater than air among the volatile organic compounds,
The carpet for a vehicle with a scavenger according to any one of claims 1 to 3, wherein the specific volatile organic compound is a volatile aldehyde such as acetaldehyde or formaldehyde.

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