JP5166838B2 - Anti-slip cushioning material - Google Patents

Description

  The present invention relates to an anti-slip cushioning material used as a floor mat such as a floor mat for a house such as a floor mat for an automobile, a kitchen mat, an entrance / exit mat, and a carpet.

  Conventionally, when using the cushion material used as this kind of floor mat on the floor material made of wood, resin, concrete, etc. as the object, because the friction coefficient on the back of the cushion material is low, The cushion material may slide against the floor material. Anti-slip resin sheets such as vinyl chloride resin and rubber are widely used as materials and backing materials for preventing such slipping of the cushion material. Further, an anti-slip cushion material having a structure in which such an anti-slip resin sheet and a skin material are laminated is used.

  Furthermore, as a method for manufacturing a backing material for a floor mat, a step of forming a fiber web, a step of protruding fibers from the surface of the fiber web with a needle, a step of shearing the protruding fibers, and a surface subjected to shearing treatment A process including a step of forming a resin lump by heat treatment is known (see, for example, Patent Document 1). This resin lump makes it difficult for the ends of the fibers that have penetrated into the floor material to come off, and can exert an effect of preventing the floor mat from slipping.

Further, as a floor mat, there is known a structure in which a skin material, a urethane foam layer, a chip urethane foam layer, and a compressed urethane foam layer are sequentially laminated from above (see, for example, Patent Document 2). ). Compressed urethane foam is obtained by heat-pressing ordinary urethane foam and has a high degree of friction and is suitable for use on flooring.
JP 2002-4163 A (2nd page, 3rd page and FIG. 1) JP 2002-276135 A (second page and third page)

  However, in the method for producing a floor mat backing described in Patent Document 1, fibers are protruded from the surface of the fiber web with a needle to the fiber web, and after the shirring treatment is performed on the protruded fiber, shearing is performed. A number of steps are required in which the treated surface is heat treated to form a resin mass. For this reason, the production of the backing for the floor mat is complicated, and the resulting resin mass is formed by heat-treating the fibers, so that the anti-slip effect is weak and the sustainability of the effect is also poor. There was a problem.

  Moreover, in the floor mat described in Patent Document 2, the compression urethane foam forming the compression urethane foam layer is obtained by subjecting a normal urethane foam to hot press processing, so the frictional force is improved. Therefore, the surface is a flat surface (FIG. 1 of Patent Document 2), and the frictional force is not sufficiently improved. Therefore, it has been necessary to further improve the frictional force by embossing the back surface of the compressed urethane foam layer (FIG. 2 of Patent Document 2). Therefore, there is a demand for an anti-slip material that can improve the anti-slip effect and can maintain the effect with a simple configuration.

  Accordingly, an object of the present invention is to provide an anti-slip cushioning material that can exhibit an excellent anti-slip effect with a simple configuration and can achieve the durability of the effect.

To achieve the above object, the anti-slip cushion material according to claim 1, a cushioning material for a non-slip composed of flexible polyurethane foam, by being heated on the back, the flexible polyurethane foam The molten resin solidified by melting and agglomerating the resin skeleton of the body has an anti-slip surface formed so as to have irregularities .

The cushion material for preventing slip according to claim 2 is characterized in that, in the invention according to claim 1, the molten solid is formed by a frame process.
In the cushion material for slip prevention according to claim 3, in the invention according to claim 1 or 2, the soft polyurethane foam has an open cell structure, and the air flow rate after the heat treatment of the soft polyurethane foam. Is ² to 170 ml / cm ² / sec .

  In the cushion material for anti-slip of Claim 4, in the invention which concerns on any one of Claims 1-3, the said flexible polyurethane foam is foam containing polyols, polyisocyanates, a foaming agent, and a catalyst. It is formed by reacting and foaming body materials, and the polyols contain at least a polyester polyol or a polyether ester polyol having an ester bond.

  The cushioning material for preventing slip according to claim 5 is characterized in that, in the invention according to any one of claims 1 to 4, a skin material is joined to the surface by a frame laminating method.

According to the present invention, the following effects can be exhibited.
In the cushioning material for preventing slip according to the first aspect, the cushioning material is made of a soft polyurethane foam, and a molten solid material is formed on the back surface by heat treatment. This molten solid is considered to be formed by melting and joining the resin skeleton forming the cells of the flexible polyurethane foam by heat treatment, forming a tough and irregular shape, and increasing the friction coefficient Guessed. Therefore, an excellent anti-slip effect can be exhibited and the effect can be maintained with a simple structure in which the back surface of the flexible polyurethane foam is heated to form a molten solid.

  In the cushioning material for preventing slipping according to claim 2, the molten solid is formed by frame processing. Therefore, in addition to the effect of the invention according to claim 1, a molten solid effective for preventing slipping can be obtained easily and quickly.

  In the cushioning material for anti-slip of claim 3, the molten solid is formed by melting and joining the resin skeletons at adjacent positions forming the cells of the flexible polyurethane foam. For this reason, in addition to the effect of the invention according to claim 1 or claim 2, the molten solid can be made dense, and the anti-slip effect and its sustainability can be improved.

  In the cushioning material for anti-slip of claim 4, the flexible polyurethane foam is formed by reacting and foaming a foam raw material containing polyols, polyisocyanates, a foaming agent and a catalyst. Contains at least a polyester polyol having an ester bond or a polyether ester polyol. For this reason, in addition to the effect of the invention according to any one of claims 1 to 3, the flexible polyurethane foam is easily melted by the heat treatment, and the formation of the molten solid can be performed smoothly.

  In the cushioning material for preventing slipping according to the fifth aspect, a skin material is joined to the surface by a frame laminating method. Therefore, in addition to the effects of the invention according to any one of claims 1 to 4, the outer appearance can be satisfactorily maintained by the skin material.

In the following, embodiments that are considered to be the best of the present invention will be described in detail.
The cushioning material for preventing slip according to the present embodiment is used as a floor mat for automobiles or houses, and is usually formed into a sheet by a flexible polyurethane foam (hereinafter also simply referred to as polyurethane foam or foam). Is formed. Such an anti-slip cushioning material has a molten solid material formed on the back surface thereof by heat treatment. Here, the back surface of the soft polyurethane foam means a surface on which the soft polyurethane foam can come into contact with an object such as a flooring and can exhibit an anti-slip effect.

  FIG. 1 schematically shows a cross section in the vicinity of the back surface after frame processing is applied to the back surface of the flexible polyurethane foam, and FIG. 2 is an explanatory view schematically showing the back surface viewed from below. As shown in FIGS. 1 and 2, the resin skeleton 14 forming the cells 13 of the foam 12 is melted and bonded to the back surface of the soft polyurethane foam 12 constituting the cushioning material 10 for preventing slippage. As a result, a molten solid 11 is formed. The thickness D1 after the heat treatment of the flexible polyurethane foam 12 is formed to be thinner by the thickness D3 that has melted and disappeared from the original thickness D2 of the foam 12 by the heat treatment.

  For this reason, the melted solid material 11 is formed in the vicinity of the back surface of the foam 12 based on the melted product by heat treatment, that is, the resin skeleton 14 at the adjacent position forming the cell (bubble) 13 is melted and joined. ing. In other words, the molten solid material 11 has a thick resin skeleton 14 that continuously connects the cells 13 so that the molten solid material 11 is continuously expanded to increase the contact area with the object, and has a tough and irregular shape. For this reason, it is presumed that the friction coefficient increases. Therefore, the molten solid material 11 can exhibit an excellent anti-slip function and can achieve its sustainability. In addition, when the back surface of the foam 12 is hot-pressed, the back surface becomes a flat surface and a desired increase in the friction coefficient cannot be obtained.

  On the other hand, FIG. 3 schematically shows a cross section in the vicinity of the back surface when the back surface of the flexible polyurethane foam 12 is not subjected to frame treatment, and FIG. 4 is an explanatory diagram schematically showing the back surface viewed from below. is there. As shown in FIGS. 3 and 4, the molten solid material 11 does not exist on the back surface of the foam 12, and only the resin skeleton 14 that forms the cells 13 exists. For this reason, it is not possible to increase the coefficient of friction on the back surface of the foam 12, and a desired anti-slip effect cannot be obtained.

  The molten solid is formed by heat treatment. As the heat treatment, flame treatment (treatment by heating with a flame) is preferable because a molten solid effective for preventing slipping can be obtained easily and quickly. Compared with processing using a heating device such as a heating roll or a heating press, the flame treatment does not contact the heating device, so that the melt adheres to the heating device, the melt falls off, and further adheres to the heating device. This is preferable because problems such as reattachment of the melt to the foam do not occur.

  Specifically, the frame treatment is performed using a frame laminating apparatus so as to melt the back surface of the flexible polyurethane foam at a depth of about 0.5 to 1 mm at a treatment speed of 5 to 15 m / min. If the processing speed of the frame processing is slowed down, the melting depth becomes deep, and if the processing speed is fastened, the melting depth becomes shallow. If the treatment speed is 5 m / min, the resin skeleton of the foam may be exposed to the frame for a long time and damaged, and if it exceeds 15 m / min, sufficient molten solid matter will not be formed on the back surface of the foam.

  The flexible polyurethane foam is formed by reacting and foaming a foam raw material containing polyols, polyisocyanates, a foaming agent and a catalyst. Here, the flexible polyurethane foam is lightweight, generally has an open cell structure in which cells communicate, is flexible, and has resilience. Below, a foam raw material is demonstrated in order.

  First, as polyols, polyester polyol, polyether polyester polyol or polyether polyol is used. As polyester polyols, in addition to condensation polyester polyols obtained by reacting polycarboxylic acids such as adipic acid and phthalic acid with polyols such as ethylene glycol, diethylene glycol, propylene glycol and glycerin, lactone polyester polyols and polycarbonate systems A polyol is mentioned.

  Examples of the polyether polyester polyol include those obtained by reacting a polycarboxylic acid such as adipic acid or phthalic acid with a compound obtained by adding an alkylene oxide such as propylene oxide or ethylene oxide to a polyol such as ethylene glycol, glycerin, or sorbitol. Used.

  As polyether polyol, the compound which added alkylene oxides, such as propylene oxide and ethylene oxide, to polyols, such as ethylene glycol, glycerol, and sorbitol, is mentioned, for example. These polyols can change the number of hydroxyl groups and the hydroxyl value by adjusting the kind of raw material components, the molecular weight, the degree of condensation, and the like.

  In order to form a molten solid having durability by heat treatment such as flame treatment, it is preferable to use the polyester polyol and the polyether polyester polyol as the polyols so that each of them contains one or more kinds. By increasing the use ratio of these polyester components, the viscosity of the foam melt melted by the heat treatment is increased so that the melt is easily aggregated to form a molten solid, and the resin strength is increased. Fixing of the solid melt becomes strong and it is difficult to drop off. Therefore, it is considered that the retention strength of the obtained molten solid is increased and the durability is improved. Furthermore, the stickiness of the surface of the molten solid after the heat treatment can be eliminated in a shorter time. In addition, since it is possible to improve the frame laminating properties of polyurethane foams, when laminating the skin material on the foam surface, the processing efficiency is high, and the skin surface on the foam surface without an adhesive or the like. The materials can be joined.

  It is preferable that content of the said polyester polyol and polyether polyester polyol is 20-100 mass parts in 100 mass parts of all polyols. When the content is less than 20 parts by mass, stickiness remains on the back surface of the foam after the heat treatment, and the stickiness may cause dirt to adhere to the object.

  Moreover, a crosslinking agent can be mix | blended as some polyols. Examples of the crosslinking agent include polyols (polyfunctional alcohols) such as polyethylene glycol, diethylene glycol, polypropylene glycol, glycerin, trimethylolpropane, pentaerythritol, and sorbitol, or compounds obtained by extending the polyol with alkylene oxide or the like. . By containing a crosslinking agent, the crosslink density of the flexible polyurethane foam can be increased, the coefficient of friction on the back surface of the foam can be increased, and the mechanical properties of the foam can be improved.

  Next, polyisocyanates to be reacted with polyols are compounds having a plurality of isocyanate groups, specifically, tolylene diisocyanate (TDI), 4,4-diphenylmethane diisocyanate (MDI), 1,5-naphthalene diisocyanate ( NDI), triphenylmethane triisocyanate, xylylene diisocyanate (XDI), hexamethylene diisocyanate (HDI), dicyclohexylmethane diisocyanate, isophorone diisocyanate (IPDI) and the like are used. Among these, tolylene diisocyanate is preferable for producing a polyurethane foam having a low density (light specific gravity).

  The isocyanate index (isocyanate index) of the polyisocyanates is appropriately set, but is preferably set to 90 to 130, more preferably 100 to 120. By setting the isocyanate index to 100 to 120, the stickiness of the surface of the molten solid formed on the back surface of the foam can be quickly eliminated, and the crosslink density of the foam is increased to contribute to the improvement of the friction coefficient on the back surface of the foam. be able to.

  Here, the isocyanate index represents the equivalent ratio of the isocyanate group of the polyisocyanate to the active hydrogen group such as the hydroxyl group of the polyol, the hydroxyl group of the polyol as the crosslinking agent, and the foaming agent (water) in percentage. An isocyanate index exceeding 100 means that the isocyanate group is in excess of the active hydrogen group. When the isocyanate index is less than 90, the reaction of polyisocyanates with polyols and the like is insufficient, and the foam tends to rupture and collapse, and the crosslink density of the resulting foam decreases, and the foam is soft. As a result, the mechanical properties deteriorate. On the other hand, when the isocyanate index exceeds 130, the crosslink density of the foam is increased, the connectivity of the cell is deteriorated, and the strain (strain) characteristic tends to be lowered.

  Subsequently, the catalyst is for accelerating a resinification reaction (urethanization reaction) between polyols and polyisocyanates, and for promoting a foaming reaction between polyisocyanates and water as a blowing agent. In particular, a metal catalyst is used as a catalyst for selectively promoting the resinification reaction, and an amine catalyst is particularly used as a catalyst for promoting the foaming reaction. Specific examples of metal catalysts include organic tin compounds such as tin octylate (tin octoate), dibutyltin dilaurate, tin dibutyldiacetate, tin di (2-ethylhexyl) dilaurate, and di (2-ethylhexanoate) tin. (2-ethylhexanoic acid) lead and the like. Specific examples of the amine catalyst include tertiary amines such as N, N ′, N′-trimethylaminoethylpiperazine, triethylenediamine, and dimethylethanolamine.

  The content of the metal catalyst is preferably 0.05 to 0.40 parts by mass per 100 parts by mass of polyols. When the content of the metal catalyst is less than 0.05 parts by mass, the progress of the resinification reaction is insufficient, the foam tends to rupture and collapse, the crosslink density of the resulting foam decreases, and the mechanical properties are reduced. Damaged. On the other hand, when the amount is more than 0.40 parts by mass, the resinification reaction proceeds excessively, the foam has a high crosslinking density, the cell membrane increases, the cell connectivity is inhibited, and the air permeability deteriorates. . Moreover, it is preferable that content of an amine catalyst is 0.1-0.5 mass part per 100 mass parts of polyols. When the content of the amine catalyst is less than 0.1 parts by mass, the foaming reaction is not sufficiently progressed, and the connectivity of the cells of the resulting foam is lowered, and the air permeability tends to be impaired. On the other hand, if the amount is more than 0.5 parts by mass, the progress of the foaming reaction becomes excessive, and the mechanical properties of the foam deteriorate.

  Next, the foaming agent is for foaming polyurethane into a polyurethane foam. Examples of the foaming agent include water commonly used in the production of flexible polyurethane foam (reacts with polyisocyanates to generate carbon dioxide gas), water and halogenated aliphatic hydrocarbons as auxiliary foaming agents, such as The combined use with methylene chloride, trichloroethane, carbon dioxide, etc., and the combined use with acid amide are preferred. Among these foaming agents, water having excellent foaming reaction reactivity and good handleability is preferred, but when seeking a lightweight foam, not only water, but also a halogenated hydrocarbon that is an auxiliary foaming agent, The combined use with carbon dioxide gas or the like is preferable.

  In the case of water, the foaming agent content is preferably 1.5 to 5.0 parts by mass per 100 parts by mass of polyols. When the content of the foaming agent is less than 1.5 parts by mass, the foaming reaction becomes insufficient and the foam cannot be obtained in a stable state. On the other hand, when the content of the foaming agent is more than 5.0 parts by mass, there is a problem of heat generation due to the reaction between water and polyisocyanates, or the open cell structure of the foam is not sufficiently formed, which is not preferable. . Although content of an auxiliary | assistant foaming agent is suitably determined in order to adjust the apparent density of a foam, it is preferable that it is 1.0-10 mass parts per 100 mass parts of polyols. When the content of the auxiliary foaming agent is less than 1.0 part by mass, the amount of vaporization of the auxiliary foaming agent is small, and the effect as the auxiliary foaming agent tends to decrease. On the other hand, when the amount is more than 10 parts by mass, sufficient vaporization due to heat generation is not performed, and a satisfactory effect as an auxiliary foaming agent cannot be obtained.

  Subsequently, the foam stabilizer is used as necessary in order to smoothly advance foaming performed by the foaming agent. As such a foam stabilizer, what is normally used when manufacturing a flexible polyurethane foam can be used. Specific examples of the foam stabilizer include silicone compounds, anionic surfactants such as sodium dodecylbenzenesulfonate and sodium lauryl sulfate, polyether siloxane, and phenolic compounds. The content of the foam stabilizer is set according to a conventional method.

In addition to the above-mentioned raw materials, flame retardants, water repellent materials, antioxidants, ultraviolet absorbers, colorants, foam breakers (fillers) and the like can be blended in the foam raw material according to a conventional method.
The aforementioned reaction between the polyols and the polyisocyanates is carried out according to a conventional method, and a one-shot method or a prepolymer method is employed. The one-shot method is a method in which polyols and polyisocyanates are directly reacted. The prepolymer method is a method in which a part of a polyol and a polyisocyanate are reacted in advance to obtain a prepolymer having an isocyanate group or a hydroxyl group at a terminal, and the polyol or the polyisocyanate is reacted therewith. Moreover, as a soft polyurethane foam, the soft slab polyurethane foam obtained by a slab foaming method is preferable. In the slab foaming method, the reaction raw material (reaction mixture) mixed and stirred by the one-shot method is discharged onto a belt conveyor, and the reaction raw material reacts at normal temperature and atmospheric pressure while the belt conveyor moves. Obtained by foaming. Thereafter, it is cured (cured) in a drying furnace and cut into a predetermined shape. In addition, a flexible polyurethane foam can also be obtained by a molding method, an on-site spray molding method, or the like.

The soft polyurethane foam thus obtained has an apparent density of preferably 20 to 80 kg / m ³ , more preferably 25 to 50 kg / m ³ . Here, the apparent density is a value measured according to JIS K 7222: 1999. When this apparent density is lower than 20 kg / m ³ , the ratio of the cells in the foam increases and the resin skeleton decreases to show a tendency of the molten solid to decrease, and the anti-slip effect decreases. On the other hand, when the apparent density is higher than 80 kg / m ³ , there are few physical demerits, but it is difficult to obtain a great merit that it can be designed to be very lightweight.

  The average number of cells of the foam is preferably 30 to 80 cells / 25 mm, and fine cells are formed. When the average number of cells is less than 30 cells / 25 mm, the cell diameter increases and the molten solids due to the resin skeleton forming the cells tend to decrease. On the other hand, when the number is more than 80/25 mm, there are few physical demerits, but the cell becomes fine and cannot be used as a general-purpose product, and the anti-slip effect due to melting also decreases.

In addition, the air permeability after heat treatment of the foam is preferably about ^{2 to} 170 ml / cm ² / sec. In that case, the air permeability of the foam can be maintained, and sound absorption, cushioning properties, distortion (distortion) ) Physical properties such as characteristics can be expressed well. When the air flow rate is less than ² ml / cm ² / sec, the air flow rate of the foam is small, and the physical properties as a flexible polyurethane foam such as strain characteristics and cushioning properties are lowered. On the other hand, when it is more than 170 ml / cm ² / sec, the connectivity of the cell is high, the sound absorption is inferior, and the formation of molten solids by the resin skeleton tends to decrease, and the anti-slip effect is reduced.

  The anti-slip cushioning material is preferably constructed by joining a skin material to the surface of the soft polyurethane foam (the surface opposite to the surface on which the molten solid is formed) by a frame lamination method. By adopting the frame laminating method, since no adhesive is used, the flexibility of the skin material is not impaired, and deterioration of physical properties such as elongation of the cushioning material for preventing slipping can be prevented. Here, in the frame laminating method, in order to adhere the skin material to the surface of the sheet-like soft polyurethane foam, the frame is applied to the surface of the foam and melted, and adhesiveness is expressed in that part, thereby attaching the skin material. It is. As the flexible polyurethane foam to be used, those containing the aforementioned polyester component as polyols and those containing a low molecular weight polyol component are preferred. In this case, the flexible polyurethane foam is easily melted by the frame, and the melted portion is increased to improve the adhesiveness.

The effects exhibited by the above embodiment will be described collectively below.
In the cushion material for anti-slip of the present embodiment, the molten solid material on the back surface of the foam is formed by melting and joining the resin skeleton forming the cells of the foam by heat treatment, tough and irregular irregularities A shape is formed, and a friction coefficient (a static friction coefficient and a dynamic friction coefficient) becomes large. For this reason, it is possible to exhibit an excellent anti-slip effect and to maintain the effect with a simple configuration in which a heat treatment is performed on the back surface of the foam to form a molten solid. Furthermore, since the cushioning material for preventing slip is composed of a soft polyurethane foam, it can exhibit excellent properties such as cushioning properties, shock absorption properties, sound absorption properties, and heat insulation properties. The anti-slip cushioning material can be suitably used as a floor mat for automobiles, a kitchen mat, an entrance / exit mat, a floor mat for houses such as carpets, and the like.

-Since the molten solid is formed by frame processing, a molten solid effective for preventing slipping can be obtained easily and quickly.
-The molten solid is formed by melting and joining the resin skeletons at the adjacent positions that form the cells of the foam, so that the molten solid can be made dense, and the anti-slip effect and its durability Can be improved.

  -Since the polyols for forming the foam contain at least a polyester polyol or a polyether ester polyol having an ester bond, the foam is easily melted by a heat treatment such as a flame treatment, and a molten solid Can be formed smoothly.

  -The anti-slip cushioning material is configured such that the skin material is bonded to the surface of the foam by a frame laminating method, so that the appearance can be satisfactorily maintained by the skin material while maintaining the anti-slip effect.

Hereinafter, the embodiment will be described more specifically with reference to examples and comparative examples, but the present invention is not limited to the scope of these examples.
(Examples 1-10 and Comparative Examples 1-8)
A foam raw material of a flexible polyurethane foam containing polyols, polyisocyanates, foaming agent, foam stabilizer, catalyst and foam stabilizer was prepared with the composition shown in Table 1. The numerical value of the foam raw material in Table 1 represents part by mass. And the foam raw material was mixed at normal temperature, and it reacted and foamed (slab foaming) according to a conventional method, thereby producing a flexible polyurethane foam (sheet material) having a length of 800 mm, a width of 500 mm and a thickness of 9 mm.

The foam raw material, the apparent density of the foam and the average number of cells shown in Table 1 will be described below.
Polyol F3010: Polyester polyol, hydroxyl value 56 mgKOH / g, mass average molecular weight 3000, manufactured by Kuraray Co., Ltd., Kurapol F3010
Polyol L50: Polyether polyester polyol, hydroxyl value 56 mgKOH / g, mass average molecular weight 3000, manufactured by Mitsui Takeda Co., Ltd., L-50
Polyol GP3000: Polyether polyol, hydroxyl value 56 mgKOH / g, mass average molecular weight 3000, manufactured by Sanyo Chemical Industries, GP3000
Polyol N2200: Polyester polyol, hydroxyl value 60 mgKOH / g, mass average molecular weight 3000, manufactured by Nippon Polyurethane Industry Co., Ltd., N2200
Polyisocyanate T-80: A mixture of 80% by mass of 2,4-tolylene diisocyanate and 20% by mass of 2,6-tolylene diisocyanate, manufactured by Nippon Polyurethane Industry Co., Ltd., Coronate T-80
Amine catalyst: Triethylenediamine, manufactured by Nippon Emulsifier Co., Ltd., LV33
Metal catalyst: tin octylate, manufactured by Johoku Chemical Industry Co., Ltd., MRH-110
Foam stabilizer (1): Silicone foam stabilizer, manufactured by Nippon Unicar Co., Ltd., L520
Foam stabilizer (2): Silicone foam stabilizer, manufactured by Nippon Unicar Co., Ltd., L532
Apparent density (kg / m ³ ): A value measured according to JIS K 7222 (1999).

  Average number of cells (pieces / 25 mm): A value measured in accordance with Appendix 1 (reference) of JIS K 6400-1: 2004.

そして、得られた軟質ポリウレタン発泡体について、その裏面をフレームラミネート設備で、処理速度１０ｍ／ｍｉｎにてフレーム処理した。この場合、フレーム処理後の製品（滑り防止用クッション材）の厚さを８．０ｍｍ又は８．５ｍｍとし、溶融深さを０．５ｍｍ又は１．０ｍｍとし、それぞれ表２に示した。得られた製品について、通気量並びに対象物（ＡＢＳ樹脂又は化粧板）に対する滑り性の評価（静摩擦係数及び静摩擦係数向上率）、溶融固形物の耐久性及びべたつきを下記に示す方法によって測定した。但し、通気量は発泡体にフレーム処理を施す前後でほとんど変化がなかった。それらの結果を表２及び表３に示した。なお、実施例１０では、実施例１のシート材を用い、その表面に表皮材としてトリコット素材の生地をフレームラミネート法により接合した。その場合、シート材の厚さを７ｍｍとし、表皮材の厚さを０．５ｍｍとし、合計厚さを７．５ｍｍとした。

And about the obtained flexible polyurethane foam, the back surface was flame-processed with the processing rate of 10 m / min with the frame lamination equipment. In this case, the thickness of the product after the frame treatment (anti-slip cushioning material) was set to 8.0 mm or 8.5 mm, and the melt depth was set to 0.5 mm or 1.0 mm. About the obtained product, the air permeability, the evaluation of slipperiness (the static friction coefficient and the static friction coefficient improvement rate) on the object (ABS resin or decorative board), the durability and stickiness of the molten solid were measured by the following methods. However, the air flow rate hardly changed before and after the foam was subjected to the frame treatment. The results are shown in Tables 2 and 3. In Example 10, the sheet material of Example 1 was used, and a fabric of a tricot material as a skin material was joined to the surface by a frame lamination method. In that case, the thickness of the sheet material was 7 mm, the thickness of the skin material was 0.5 mm, and the total thickness was 7.5 mm.

  Here, in Comparative Examples 1 to 8, no molten solid material was formed by frame treatment on the back surface of the flexible polyurethane foam. Among them, the polyurethane foam A was used in Comparative Examples 1 to 4, and the test was performed by changing the object (ABS resin or decorative board) and the frictional load (200 g or 1200 g). In Comparative Example 5, polyurethane foam B, in Comparative Example 6, polyurethane foam C, and in Comparative Example 7, polyurethane foam D were used. ABS resin as a target, 1200 g of friction load, and Comparative Example 8, polyurethane foam E, target As an example, an ABS resin and a friction load of 200 g are shown.

Aeration rate (ml / cm ² / sec): A value measured in accordance with the method B of JIS K 6400-7.
Evaluation of slipperiness: It was carried out according to JIS K 7125. ABS resin or a decorative board was used as the object, and 200 g or 1200 g was applied as a friction load, and the static friction coefficient was measured. The evaluation of slipperiness was performed by the improvement rate of the static friction coefficient in addition to the static friction coefficient. The improvement rate of the static friction coefficient was obtained by the following equation.

Improvement rate of static friction coefficient (%) = (Static friction coefficient when molten solid is formed on the back surface / Static friction coefficient when molten solid material is not formed on the back surface) × 100
Durability: Evaluation was made based on whether or not the molten solid formed on the back surface of the flexible polyurethane foam after the evaluation of the above-mentioned slipperiness was lost.

  Stickiness: The stickiness of the molten solid formed on the back surface of the flexible polyurethane foam after the evaluation of the slipping property was judged by touching with a hand.

表２に示した結果より、実施例１〜９では静摩擦係数の向上率が１３２〜２７３％であり、静摩擦係数の十分な向上を図ることができ、優れた滑り防止効果が得られた。また、溶融固形物の耐久性についても実施例８以外は良好であり、実施例８においても他の実施例よりも低いが、耐久性を有するものであった。さらに、溶融固形物のべたつきに関しても実施例８以外はべたつきが全くなく、実施例８においてもべたつきは許容できるものであった。なお、実施例９では発泡体原料のトリレンジイソシアネートについてイソシアネート指数が１００未満であったため、軟質ポリウレタン発泡体裏面のべたつきの解消が実施例１〜８の場合に比べて長い時間を要した。

From the results shown in Table 2, in Examples 1 to 9, the improvement rate of the static friction coefficient was 132 to 273%, the static friction coefficient could be sufficiently improved, and an excellent anti-slip effect was obtained. Also, the durability of the molten solid was good except for Example 8, and in Example 8, it was lower than the other examples, but it had durability. Further, the stickiness of the molten solid was not sticky except in Example 8, and stickiness was acceptable in Example 8. In Example 9, since the isocyanate index of the tolylene diisocyanate of the foam material was less than 100, it took a longer time to eliminate stickiness on the back surface of the flexible polyurethane foam than in Examples 1 to 8.

一方、表３に示した結果より、比較例１〜８では発泡体裏面にフレーム処理を施さなかったため、静摩擦係数がそれぞれ対応する実施例に比べて相当低い値を示し、滑り防止効果が不足することが明らかになった。

On the other hand, from the results shown in Table 3, in Comparative Examples 1 to 8, no frame treatment was performed on the back surface of the foam, so the static friction coefficient showed a considerably lower value than the corresponding examples, and the slip prevention effect was insufficient. It became clear.

In addition, this embodiment can also be changed and embodied as follows.
The processing speed and melting depth in the frame processing described above can be set according to the apparent density of the foam and the average number of cells.

-By the said frame process, it is also possible to form so that the molten solid material formed in a foam back surface may have an unevenness | corrugation, and to raise a friction coefficient.
-As said heat processing, it can replace with flame | frame processing and can also employ | adopt methods, such as an electric heat processing (a heating roll etc.).

  ・ In addition to the above-mentioned frame laminating method, a method of adhering via an emulsion-based or solvent-based adhesive, an adhesive method using a hot-melt adhesive, or the like is adopted as a method for adhering the skin material to the surface of the foam. It is also possible.

-Anti-slip cushioning material can be used by sticking it to the bottom of furniture, office equipment, electronic equipment, etc., or as a stationery on a desk or table.
Further, the technical idea that can be grasped from the embodiment will be described below.

  The anti-slip cushioning material according to any one of claims 1 to 5, wherein the molten solid is continuously formed with a thick resin skeleton. When comprised in this way, in addition to the effect of the invention which concerns on any one of Claims 1-5, the contact area with respect to a target object can be expanded, and the friction coefficient of a foam back surface can be raised.

  The anti-slip cushioning material according to any one of claims 1 to 5, wherein the polyisocyanate forming the flexible polyurethane foam is tolylene diisocyanate. When comprised in this way, in addition to the effect of the invention which concerns on any one of Claims 1-5, a low density flexible polyurethane foam can be obtained easily.

  The cushion material for preventing slipping according to any one of claims 1 to 5, wherein the soft polyurethane foam is obtained by a slab foaming method. When comprised in this way, in addition to the effect of the invention which concerns on any one of Claims 1-5, a foam can be obtained easily by simple operation.

  The anti-slip cushioning material according to any one of claims 1 to 5, wherein the cushioning material is used for a floor mat. When comprised in this way, the effect of the invention which concerns on any one of Claims 1-5 can be exhibited effectively about a floor mat.

Explanatory drawing which shows typically the cross section of the back surface vicinity after giving a frame process to the back surface of the flexible polyurethane foam in embodiment. Explanatory drawing which shows typically the state which looked at the back surface after performing a frame process to the back surface of a flexible polyurethane foam from the downward direction. Explanatory drawing which shows typically the cross section of the back surface vicinity in case the frame process is not given to the back surface of a flexible polyurethane foam. Explanatory drawing which shows typically the state which looked at the back surface when the frame process is not given to the back surface of a flexible polyurethane foam from the downward direction.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Anti-slip cushioning material, 11 ... Molten solid, 12 ... Soft polyurethane foam, 13 ... Cell, 14 ... Resin frame | skeleton.

Claims (5)

A cushioning material for a non-slip composed of flexible polyurethane foam, by being heated on the back, molten solids resin skeleton of the flexible polyurethane foam has been thickened by melting aggregate irregularities An anti-slip cushioning material comprising an anti-slip surface formed to have The anti-slip cushioning material according to claim 1, wherein the molten solid is formed by frame processing. The said flexible polyurethane foam has an open cell structure, and the air flow rate after the said heat processing of this flexible polyurethane foam is 2-170 ml / cm < ² > / sec, The claim 1 or Claim 2 characterized by the above-mentioned. The cushioning material for slip prevention according to 1. The flexible polyurethane foam is formed by reacting and foaming a foam raw material containing a polyol, a polyisocyanate, a foaming agent and a catalyst, and the polyol is a polyester polyol or a poly having at least an ester bond. The cushioning material for preventing slipping according to any one of claims 1 to 3, wherein the cushioning material contains an ether ester polyol. The anti-slip cushioning material according to any one of claims 1 to 4, wherein a skin material is joined to the surface by a frame laminating method.

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