JPH09249062A - Water absorption and evaporation type floor mat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To ensure water evaporating action from a mat surface in addition to a proper water absorption and holding action by providing a composite construction of a top layer made of waterproof paper having its absorption and evaporation properties of water from the surface thereof, an intermediate layer including water absorption paper, and a water-proof base plate layer contacted with a floor face. SOLUTION: To give water resistance to a craft pulp paper, a water absorption paper 2 forming an intermediate layer is provided using kitchen paper or the like between a water resistance paper 1 forming a top layer fixing a reinforce agent mixing polyamideo epoxy reinforce agent and acrylamido reinforce agent at the ratio of 3:1 using aluminum sulfate and a waterproof paper 3 forming the base layer using a paper board such as coat board. This water absorption paper 2 has a laminate structure if 5 to 10 sheets of the paper, a space for holding water is formed by means of protrusion and recess due to embossing or crape working. Thereby, water evaporating action from the mat surface can be sufficiently ensured in addition to proper water absorption and holding action.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to, for example, a floor mat to be laid on the floor of a passenger car, a water-absorbent and divergent floor mat that can be used as a floor mat for a bathroom in a general household, and has both water-containing and wicking properties. It has excellent properties, especially
The present invention relates to a water-absorbing and diverging floor mat suitable for use as a floor mat for passenger cars in snowy areas.

[0002]

2. Description of the Related Art Conventionally, as a water absorbent floor mat for automobiles,
Various types have been commercialized. In the case of an automobile floor mat, the floor gets wet when getting in the vehicle on a rainy day or when it snows, so measures against the wetting are important.

Therefore, as the floor mat of this kind, those made of rubber or vinyl are mainly used, but in this type of floor mat, when the water on the floor is collected, the water must be discharged each time.

On the other hand, various types of water-absorbing mats have been put into practical use, and as a disposable water-absorbing floor mat, for example, the floor mat disclosed in Japanese Utility Model Laid-Open No. 62-13459. Can be mentioned as a conventional example. This floor mat is made of three types of materials with different characteristics.The lower layer is a waterproof vinyl sheet as a water barrier layer, the middle layer is a water absorbent paper sheet as a water absorbent layer, and the upper layer is a paper sheet as a dust absorbent layer. It is the one that uses a chemical cloth.

As a conventional floor mat having such a multilayer structure, there is, for example, a water absorbent mat disclosed in Japanese Patent Laid-Open No. 4-371834. This water-absorbent mat is formed by laminating a base material sheet, a water-absorbent sheet, a mesh sheet and a non-woven fabric, and joining the peripheral edges thereof.
As the base sheet, a sheet made of rubber or plastic is used. The water-absorbent sheet thereon carries a water-absorbent polymer such as starch-based, cellulose-based, synthetic polymer-based or the like, whereby the water-absorbing ability can be improved. Further, in this water-absorbent mat, a tape-like waiff sheet having a flat cross section on the water-absorbent sheet, a mesh sheet such as a table cloth, a synthetic fiber, a natural fiber,
Nonwoven fabric made of glass fiber is laminated to improve the mechanical strength.

[0006]

However, the conventional floor mat of this type absorbs water adhering from wet shoes and water falling on the mat and retains the water so that the water does not flow out. The function and the mechanical strength that does not damage even if the surface layer of the mat is stepped on with shoes in the state of containing water. For this reason, it is thrown away after being used to some extent.

Further, in the conventional floor mat having a water absorbing layer inside the mat, a water absorbing polymer is often used as an adsorbent. Although this water-absorbing polymer is good in terms of water absorbency, conversely, if this property is turned over, there is no wicking property of absorbed water, and water does not easily escape from the water-containing polymer, so use it. The water content becomes saturated during continuous operation, and the mat is usually replaced at this stage.

In the case of a water-absorbent floor mat for an automobile used in a snowy area, as a matter of fact, the water-absorbent floor mat has good water-absorbing property and therefore must be replaced frequently, which is a drawback and is not practical. There was a problem.

Therefore, an object of the present invention is to solve the problems of the conventional absorbent floor mats described above, and to make them usable for a long period of time by repeating the water absorbing function and the water wicking function from the mat surface. It is an object of the present invention to provide a divergent floor mat having both water absorbency and sufficient and well-balanced divergence.

Another object of the present invention is to provide a water absorbing and diverging floor mat particularly suitable for use as a floor mat for automobiles in a snowy area.

[0011]

In order to achieve the above-mentioned object, the water-absorbing and wicking mat according to the present invention comprises a surface layer made of water-resistant paper having absorbability and wicking property of moisture from the surface, and a water-absorbent paper. It is characterized in that it has a three-layer composite structure of an intermediate layer containing it and a waterproof substrate layer in contact with the floor surface.

According to the water absorbing and diverging type mat of the present invention, the water dropped or attached on the mat penetrates from the surface layer into the inside of the mat and is absorbed in the intermediate layer, but is blocked by the substrate layer. The floor surface is always kept dry. On the other hand, the surface layer of the mat causes water to evaporate from the surface, so that the moisture absorbed in the intermediate layer is gradually released. The water-absorbing and wicking mat of the present invention has a water-absorbing action and a moisture-releasing action from the surface of the mat which are repeated, so that the absorption of moisture does not reach saturation and its absorbing function is unlikely to deteriorate, and the mat does not need to be replaced for a long time. Can be used.

In the water-absorbing and wicking mat of the present invention, in order to promote moisture wicking, it is preferable that the water-resistant paper forming the surface layer has continuous irregularities formed on its surface. The water-resistant paper strength is added by the addition or coating of a strengthening agent so that the mat does not easily break even if it is rubbed by the sole of the shoe while it contains water.

The concavo-convex process of the water-resistant paper used for the surface layer of the water-absorbing and wicking mat is formed by embossing or creping. Further, the intermediate layer has a multi-layered structure in which a plurality of non-size water-absorbent papers are stacked. Preferably, the water-absorbent paper layer forming the intermediate layer is made of embossed or crepe-processed kraft paper, and the water-holding property of the water-absorbent paper layer is enhanced by the voids formed by the embossing or crepe process. It is a feature. Thereby, the water retention property is significantly improved.

Further, according to a preferred embodiment of the water-absorbing and wicking mat of the present invention, the substrate layer is made of a waterproof coated board so that it can be fixedly laid on the floor surface. The floor-contacting surface of the coat board is preferably coated with an anti-slip agent.

Further, according to a preferred embodiment of the water-absorbing and wicking mat of the present invention, the surface layer and the intermediate layer are made of kraft paper, and the substrate layer is made of laminated paper containing kraft paper and waste paper. . By using such paper as a material, the used mat can be incinerated or landfilled, and at that time, it does not adversely affect the environment. It can also be reused as recycled waste paper.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a water-absorption and diffusion mat according to the present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is a cross-sectional view of a water-absorption / dissipative mat according to this embodiment, and FIG. 2 is a three-dimensional view showing a cutaway cross-section of the water-absorption / dissipative mat.

This water-absorbing and wicking mat is basically a mat having a three-layer composite structure of a surface layer, an intermediate layer and a substrate layer. Each of these layers has its four edges covered with a strip-shaped cloth tape or a paper tape, and is further attached by sewing or adhesive to be integrated into a mat having a multilayer structure.

As the waterproof paper 1 forming the surface layer, a softwood kraft pulp 100 paper is used. Further, in order to impart water resistance to this kraft paper, it is preferable to fix the reinforcing agent using aluminum sulfate, which is a mixture of a polyamide epoxy type reinforcing agent and an acrylic amide type reinforcing agent in a ratio of 3: 1. By this process, kraft paper will
Wet paper strength can be imparted so that the strength is not lost even when wet with water.

Further, the kraft paper is continuously formed with embossments by means of embossing so as to have the ability to disperse moisture from the surface. Instead of the embossed kraft paper, kraft paper may be used which has irregularities formed on its surface.

As the water-absorbent paper 2 forming the intermediate layer, so-called kitchen paper, towel paper, wet tissue, or water-absorbent paper manufactured in accordance with a similar method for manufacturing water-absorbent paper can be used. Preferably, softwood kraft pulp and hardwood are mixed in a ratio of 1: 1, 3: 1 or 1: 3, and beating is shallow. Polyamide-epoxy type enhancer and aluminum sulfate are used as chemicals to be added, and no sizing agent is used. As for the number of laminated water-absorbent papers 2,
From the balance of water absorption and divergence described later, 5 to 10 sheets are suitable.

The water-absorbent paper 2 is most preferably unsized paper that has been embossed or creped. As shown in FIG. 3 and FIG. 4, in the intermediate layer, water is absorbed by each water-absorbent paper 2, and spaces between the water-absorbent paper are held by the unevenness due to embossing or crepe processing (see FIG. (Shown by a medium mesh), the water retention of water is significantly improved.

A board such as a coated board is used as the waterproof paper 3 forming the substrate layer. This paperboard is subjected to a waterproofing process to prevent water contained in the intermediate layer from leaking to the floor after a drying step at the time of papermaking, and if necessary, one surface thereof, that is, The surface that contacts the floor is coated with an anti-slip agent.

Next, FIGS. 5 and 6 are diagrams schematically showing the water absorbing action and the water diverging action of the water absorbing and wicking mat. According to this water absorption and divergence type mat, the water dropped or attached on the mat permeates from the surface layer to the inside of the mat and is absorbed in the intermediate layer, but since it is blocked by the substrate layer, the floor surface is always kept. Be kept dry. On the other hand, since the surface layer of the mat has continuous unevenness due to embossing, etc., the contact area with the outside air is large, and since it also diverges from the side wall surface of the recess, water is diverged from the surface at a large divergence rate. Therefore, the water absorbed by the intermediate layer gradually diverges. By repeating such a water absorbing action and a moisture wicking action from the surface of the mat, it is possible to balance the water absorbing action and the wicking action as compared with the conventional mat which is focused only on the absorbability. Has no drawback that its absorption reaches saturation and its absorption function deteriorates, and it can be used for a long time without replacement.

Next, regarding the above embodiment,
The present invention will be described in more detail with reference to some examples. Table 1 summarizes the results of the water absorption performance test conducted on Examples A to E, which were used for each Example.
The specifications of the water-resistant paper for the surface layer, the water-absorbent paper for the intermediate layer, the number of sheets, and the paperboard for the substrate layer are also shown. In this water-absorption performance test, water was dropped on the diffusion mat of each example, and the amount of water absorption per unit area was measured when water was added to a completely saturated state.

[0026]

[Table 1] In each of the mats of Examples A to E, the surface water-resistant paper is basically the WS embossed WS duostress paper. The backing paperboard is paperboard backing paper, and the contact surface with the floor is anti-slip. In the case of this example, various different papers were used as the water absorbent paper of the intermediate layer, and the number of the papers was changed, and the water absorbing performance was examined and the moisture wicking performance was also tested.

Table 2 shows the divergence performance test results measured for each of Examples A to E above. The measurement method is a result in which the mat of the example was put into a saturated water-containing state, left in a room under heating, and the amount of water contained at that time was measured at 100 hours immediately after water-containing. The room conditions at the time of this measurement were room temperature of 24.5 to 25 ° C. and humidity of 54 to 55%.

[0028]

[Table 2] FIG. 7 is a graph showing such a test result as showing the change with time of the water content index.

As can be seen from the graph of FIG. 7, as the number of water-absorbent papers increases, the absolute amount of water content increases accordingly, so that the divergence is delayed, but as in Examples B and D, the water-absorbent paper 5 is used. With about 6 sheets, it can be said that a considerable water content can be secured and the divergence can be secured in a well-balanced manner. As shown in Table 2, most of the water evaporates after 24 hours, so that in practice, it is possible to withstand repeated use of water and diffusion.

[0030]

As is apparent from the above description, according to the present invention, in addition to the good water absorption and water retention function, the water wicking effect from the mat surface can be added in a sufficient and well-balanced manner. Therefore, since it can be used for a long period of time, it is particularly suitable for use as a floor mat for automobiles in a snowy area and also in a bath room dressing room and the like.

[Brief description of drawings]

FIG. 1 is a diagram showing a structure of an embodiment of a water-absorption and diffusion mat according to the present invention.

FIG. 2 is a partial cross-sectional three-dimensional view of the water absorption and diffusion mat according to the same embodiment.

FIG. 3 is a diagram showing a space portion formed by embossing for improving water retention in a water absorbent paper used as an intermediate layer of a water absorbing and wicking mat.

FIG. 4 is a diagram showing a space portion formed by crepe processing for improving water retention in a water absorbent paper used as an intermediate layer of a water absorbent and wicking mat.

FIG. 5 is a schematic view showing the water-absorbing action of the water-absorbing and wicking mat of the present invention.

FIG. 6 is a schematic diagram showing the wicking action of the water-absorbing and wicking mat of the present invention.

FIG. 7 is a graph showing the change with time in the water content index in the results of the divergence performance test conducted for the examples.

[Explanation of symbols]

 1 Water resistant paper 2 Water absorbent paper 3 Waterproof paper

Claims (7)

[Claims] 1. A three-layer composite structure comprising a surface layer made of water-resistant paper having a property of absorbing and wicking moisture from the surface, an intermediate layer containing the water-absorbent paper, and a waterproof substrate layer in contact with the floor surface. Water absorption and divergence type floor mat. 2. The water-resistant paper forming the surface layer is formed with continuous irregularities on its surface, and water-resistant paper strength is added by addition or coating of a strengthening agent. The water absorbing and diverging floor mat according to claim 1. 3. The water-absorbing and divergent floor mat according to claim 1, wherein the water-resistant paper has a textured surface formed by embossing or creping. 4. The water-absorbing and divergent floor mat according to claim 1, wherein the intermediate layer has a multi-layer structure in which a plurality of water-absorbent papers made of non-sized paper are stacked. 5. The water-absorbent paper layer forming the intermediate layer is made of embossed or creped kraft paper, and the water retention property of the water-absorbent paper layer is enhanced by the voids formed by the embossed or crepe processing. The water-absorbing and divergent floor mat according to claim 4. 6. The water absorbing material according to claim 1, wherein the substrate layer is made of a waterproof coated coat board, and the floor contact surface of the coat board is coated with a slip preventive agent. And divergent floor mats. 7. The water-absorption and divergence type floor according to claim 6, wherein the surface layer and the intermediate layer are made of kraft paper, and the substrate layer is made of laminated paper containing kraft paper and waste paper. mat.