JP2007202749A - Cleaning material and method of manufacturing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cleaning material capable of effectively removing stains on the surface of an object, especially oil stains and water stains or the like in a kitchen or the like by wiping the object while using moisture, and to provide a method of manufacturing the cleaning material. <P>SOLUTION: A required part of melamine-based resin foam constituting the cleaning material is impregnated with the liquid containing a solid substance in a dissolved and/or dispersed state, and then the melamine-based resin foam is freeze-dried. The solid substance composed of carbonates or organic acids is uniformly incorporated in a part or all of the melamine-based resin foam. In the solid substance composed of the carbonates or the organic acids, an aqueous solution dissolved in water indicates weak basicity or mild acidity respectively. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a cleaning material capable of wiping and removing dirt on the surface of an object, particularly oil stains and scales in a kitchen and the like, and a method for producing the same.

Japanese Patent No. 3386378 (Patent Document 1) includes a density of 5 to 50 kg / m ³ , a tensile strength of 0.6 to 1.6 kg / cm ² , an elongation at break of 8 to 20%, and a cell number of 80 to 300 / A wiping and cleaning tool comprising a melamine-based resin foam having a surface of a 25 mm open-cell structure, having a surface that is separated into particles by friction during wiping, and exhibiting hydrophilicity. An anionic surfactant is added as an emulsifier used in the formation of air bubbles in the body in the range of 1 to 60 parts by weight, and is allowed to flow out to the surface of the wiping cleaner when the wiping cleaner is used. There is disclosed a wiping cleaner characterized in that the agent is added in a range not exceeding the same amount as the anionic surfactant.

As the anionic surfactant, alkylbenzene sulfonate, alkylphenyl sulfate, higher alcohol sulfate and sulfosuccinate are suitable. Specifically, sodium dodecylbenzene sulfonate, sodium coconut oil reduced alcohol sulfate sodium (C ₁₂ H ₂₅ OSO ₃ Na), beef tallow reduced alcohol sodium sulfate ester (C ₁₆ H ₃₃ OSO ₃ Na, C ₁₈ H ₃₇ OSO) ₃ Na) and the like, and examples of the cleaning aid include zeolite, carboxymethyl cellulose, sodium carbonate, sodium tripolyphosphate, potassium pyrophosphate, sodium silicate, sodium polyacrylate, and the like. In selecting a cleaning aid, a combination having a high synergistic effect with an anionic surfactant is selected. For alkylbenzene sulfonate soda (ABS) and nonylphenol EO adducts, tripolyphosphate soda, sodium silicate and the like are preferable. As for linear alkylbenzene sulfonic acid soda (LAS) and higher alcohol alkylsulfuric acid ester soda, it is described that zeolite, carboxymethylcellulose and the like are suitable.

  This wiping and cleaning tool is composed of a melamine resin foam, which has not been used for strength in the past. The melamine resin foam has low strength, fine irregularities on the surface, and moisture. Due to the ease of inclusion, the surface to be cleaned is less likely to be scratched, has better dirt removal effect, and no wiping marks remain, compared to conventional wipes made of cloth cloth or soft polyurethane foam. It has an excellent effect of exerting its action. In addition, since the surface to be cleaned is hard to be damaged, it is not limited to furniture and automobiles, and can be used for a wide range of objects such as tableware, etc. In addition, it is said that there is no need for finishing wiping for removing wiping traces, and there is an effect that the work can be easily performed.

  At the time of use, the anionic surfactant flows out to the surface of the wiping cleaner, and the surface from which the anionic surfactant flows out peels off in the form of particles, so that the cleaning effect is further increased. In addition, the cleaning aid (builder) has an action of lowering the micelle limit concentration of the surfactant or a heavy metal sequestering action (hard water softening action), and enhances the washability.

However, if a wiping cleaner comprising a melamine-based resin foam from which such an anionic surfactant flows out is used, the user may be rough.
On the other hand, when the target surface is wiped with a wiping cleaner made of a melamine resin foam from which anionic surfactant does not flow out, even if it feels that oil stains and scales have been physically removed from the target surface, There were many cases where a feeling of stickiness or stickiness remained on the target surface.
Japanese Patent No. 3386378

  The present invention has been made in view of the above-described problems existing in the prior art. The object of the present invention is to clean the surface of an object, particularly a kitchen, by wiping the object while using moisture. It is an object of the present invention to provide a cleaning material that can effectively remove oil stains, scales, etc., and a method for producing the cleaning material.

  The cleaning material of the present invention is a cleaning material comprising a melamine-based resin foam that contains a solid substance consisting of carbonates or organic acids evenly or partly, and consists of the carbonates or organic acids. The solid substance is characterized in that an aqueous solution dissolved in water exhibits weak basicity or weak acidity, respectively.

  The object to be cleaned is wiped by the location of the cleaning material containing the solid substance. At that time, by wiping the object while using moisture as a state where moisture is included in at least the part of the cleaning material and / or a state where moisture exists on the surface of the cleaning object, A solid substance composed of carbonates or organic acids contained in the vicinity of the contact is dissolved in the moisture and acts on dirt such as oil stains and scales on the surface of the object. The action of the solid substance composed of carbonates or organic acids by the aqueous solution and the dirt removal action of the melamine resin foam itself can effectively remove oil stains, scales and other stains on the surface of the object. Can do.

  In addition, since a solid substance composed of carbonates or organic acids is uniformly contained in the melamine-based resin foam part or all, the melamine-based material in the part in contact with the object to be cleaned can be used by cleaning the part or the whole. Although the resin foam is gradually consumed due to wear and collapse, a solid substance composed of carbonates or organic acids is always present in the vicinity of the surface to be in contact with the object to be cleaned among the parts or the whole. Therefore, a solid substance composed of carbonates or organic acids always dissolves in moisture and acts on oil stains and scales, so that oil stains and scales on the surface of an object can be effectively removed.

  Further, in the cleaning material of the present invention, part of the melamine resin foam is a containing part containing the solid substance, and the other part is a non-containing part not containing the solid substance. Part of the surface of the resin foam may be formed by the containing part, and the other part may be formed by the non-containing part.

  When the object to be cleaned is wiped with a containing part, which is a part containing a solid substance consisting of carbonates or organic acids, residues resulting from the carbonates or organic acids may be formed on the object to be cleaned. . However, even if a residue is generated, the cleaning material can be effectively wiped away by a non-containing portion that is a portion not containing a solid substance made of carbonates or organic acids.

  In the cleaning material of the present invention, the content of the solid substance in the portion containing the solid substance in the melamine resin foam may be 0.1 to 50% by weight. If the content of the solid substance is less than 0.1% by weight, the action of the aqueous solution of the solid substance composed of carbonates or organic acids tends to be insufficient, and the content of the solid substance exceeds 50% by weight. In such a case, there is a risk that the dirt removing action of the melamine-based resin foam itself is insufficient.

  Moreover, as for the cleaning material of this invention, it is desirable that the part containing the said solid substance among the said melamine-type resin foams is colored with the pigment | dye.

  Even if the melamine-based resin foam contains a solid substance composed of carbonates or organic acids, it does not change in color from the one not contained, so it is not easy to identify whether or not it contains the solid substance. Absent. In the case of this cleaning material, the portion containing the solid substance in the melamine-based resin foam is colored with a pigment, thereby identifying whether or not the solid substance is contained. When it is contained, it is easy to distinguish between the parts that do not contain and the parts that do not contain in the melamine-based resin foam. It is.

  The cleaning material is produced by impregnating a required part of the melamine resin foam with a liquid containing the solid substance dissolved and / or dispersed, and then freeze-drying the melamine resin foam. Features.

  After impregnating a required part of the melamine resin foam, that is, a part or all of the liquid containing the solid substance in a dissolved and / or dispersed state, the melamine resin foam is freeze-dried and dried by sublimation. Therefore, a solid substance composed of carbonates or organic acids can be uniformly contained in the required part of the melamine resin foam, and by this, the melamine system in a place that comes into contact with the object to be cleaned is used. Despite the gradual consumption of the resin foam, there is always a solid substance consisting of carbonates or organic acids near the surface to be in contact with the object to be cleaned. It is possible to manufacture a cleaning material that can remove the like.

  According to the cleaning material of the present invention, carbonic acid contained in a portion of the cleaning material that is in contact with the cleaning object by wiping the cleaning object while using moisture by the location containing the solid substance of the cleaning material. A solid substance consisting of salts or organic acids dissolves in the moisture and acts on dirt such as oil stains and scales on the surface of the object. Therefore, coupled with the dirt removing action of the melamine resin foam itself, It can effectively remove oil stains and scales on the surface and other stains.

  According to the production method of the present invention, the cleaning material of the present invention can be efficiently produced with high reliability.

  The cleaning material of the present invention comprises a melamine resin foam. The cleaning material may be the melamine resin foam itself, or may have a melamine resin foam in part.

  As the melamine-based resin foam, those used for wiping the surface to be cleaned to remove dirt can be used, and known melamine-based resin foams conventionally used can be adopted.

  The said melamine-type resin foam contains the solid substance which consists of carbonates or organic acids uniformly in part or all. Although the content concentration of the portion containing the solid substance is preferably uniform, it is not necessarily limited thereto.

  The solid substance consisting of carbonates or organic acids contained in the melamine resin foam is such that an aqueous solution dissolved in water exhibits weak basicity or weak acidity, respectively.

  As carbonates in which an aqueous solution dissolved in water shows weak basicity, those showing weak basicity whose pH of the aqueous solution is 10 or less can be used. Specific examples include sodium hydrogen carbonate and sodium sesquicarbonate.

  As organic acids whose aqueous solution dissolved in water shows weak acidity, those whose pH of the aqueous solution is 3 to 6 can be used. Specific examples include citric acid, malic acid, tartaric acid, lactic acid, aspartic acid, glutamic acid, or salts, hydrates, anhydrides, or other derivatives thereof. In the case where an aqueous solution dissolved in water contains a solid substance composed of organic acids that exhibit weak acidity, by wiping the object to be cleaned while using moisture, scales (calcium, sodium, potassium, etc.) attached to the pot or sink It can act on the minerals) and effectively remove it. In the case where the aqueous solution dissolved in water contains a solid substance composed of carbonates showing weak basicity, there is almost no cleaning effect on scale.

The cleaning material of the present invention can be produced by the following method, for example.
(1) A method of impregnating a required part of a melamine resin foam with a liquid containing a solid substance composed of carbonates or organic acids in a dissolved and / or dispersed state, and then freeze-drying the melamine resin foam .

  Examples of the liquid include water-based solvents containing other components that do not impair the effects of the present invention in addition to water such as ion-exchanged water. The concentration in the case where the solid substance is contained in the liquid in a dissolved state can be, for example, 0.1% by weight to a saturated concentration.

  After impregnating a required part of the melamine-based resin foam, that is, a required part or all, with a liquid containing a solid substance composed of carbonates or organic acids in a dissolved and / or dispersed state by an appropriate means such as immersion, The melamine-based resin foam is frozen using a deep freezer or the like and then freeze-dried using a freeze dryer. Thereby, sublimation drying of components such as water, which is liquid at normal temperature and pressure, is performed, so that liquid movement does not occur during drying, and a solid substance made of carbonates or organic acids is added to the melamine resin foam. It can be contained evenly in the required part.

  In addition, the part which contains the said solid-state substance among melamine-type resin foams can be colored with a pigment | dye by making the said liquid contain a pigment | dye. As a result, it is easy to identify whether or not it contains the solid substance, and in particular, when it is partially contained, it is easy to distinguish between the contained part and the not contained part of the melamine-based resin foam. Therefore, the cleaning operation can be effectively performed using the contained solid substance.

Examples of the pigment include various natural pigments such as turmeric and gardenia and various synthetic pigments.
(2) After impregnating a required part of the melamine resin foam with a liquid containing a solid substance composed of carbonates or organic acids dissolved and / or dispersed, the melamine resin foam is naturally dried or heated. How to dry.

  The steps up to impregnation of the required part of the melamine resin foam with a liquid example and a liquid containing a solid substance composed of carbonates or organic acids in a dissolved and / or dispersed state are the same as in (1) It is. Subsequent drying is performed by a general drying method such as natural drying under normal temperature and normal pressure or drying with a drier at a temperature of 50 to 200 ° C. at normal pressure.

In this case, at the time of drying, with the evaporation of the liquid from the surface of the melamine resin foam, the liquid containing the solid substance in a dissolved and / or dispersed state moves in the melamine resin foam. Therefore, there is a possibility that a part of the melamine-based resin foam that needs to contain a solid substance does not contain a solid substance in part or all of the part.
In addition, when a containing location does not exist in the surface of a melamine-type resin foam, it can be used after exposing a containing location by appropriate means, such as partial excision of the melamine-type resin foam, and consumption by use.

  EXAMPLES Next, although an Example is given and this invention is demonstrated, this invention is not restrict | limited to these Examples.

Production Example 1
A commercially available melamine sponge for cleaning (melamine-based resin foam) was shaped to a height and width of 30 mm × 40 mm × 30 mm.

  By adding 189.875 g of ion-exchanged water and 10 g of sodium sesquicarbonate to a 200 cc beaker, the sodium sesquicarbonate was completely dissolved. 0.25 g of turmeric pigment (manufactured by Kiriya Chemical Co., Ltd.) was added to the aqueous solution and stirred until the solution was uniformly colored.

  This colored aqueous solution was accommodated in a glass beaker (φ70 mm × H100 mm) to a depth of 40 mm. The whole melamine sponge was immersed in the colored aqueous solution in the beaker for 10 seconds to impregnate the melamine sponge with the colored aqueous solution, and then the melamine sponge was taken out.

  The melamine sponge was frozen in a deep freezer at −15 ° C. overnight and then freeze-dried with a freeze dryer for 1 week.

  The obtained melamine sponge (cleaning material) contained sesquisodium carbonate almost uniformly throughout the sponge.

Production Example 2
A commercially available melamine sponge for cleaning (melamine-based resin foam) was shaped to a height and width of 30 mm × 40 mm × 30 mm.

  Ion-exchanged water 94.9375 g and sodium sesquicarbonate 5 g were placed in a glass beaker (φ70 mm × H100 mm) and stirred to completely dissolve sodium sesquicarbonate. To this aqueous solution, 0.125 g of turmeric pigment (manufactured by Kiriya Chemical Co., Ltd.) was added and stirred until the solution was uniformly colored. /

  This colored aqueous solution was accommodated in a glass petri dish (φ85 mm, height 13 mm) to a depth of 5 mm. The lower part of the melamine sponge was immersed in the colored aqueous solution in the petri dish for 2 seconds to impregnate the melamine sponge with the colored aqueous solution, and then the melamine sponge was taken out.

  Next, the colored aqueous solution was replenished in the glass petri dish so that the depth of the colored aqueous solution was 5 mm. The melamine sponge was impregnated with the colored aqueous solution by immersing it in the colored aqueous solution in the petri dish for 2 seconds with the upper side of the melamine sponge turned upside down, and then the melamine sponge was taken out.

  The melamine sponge was left in a thermostatic bath at 50 ° C. for 12 hours to completely evaporate water.

  The obtained melamine sponge (cleaning material) uniformly contained sodium sesquicarbonate in the upper and lower portions of 5 mm respectively.

Example 1 (oil stain removal test)
A stainless steel plate that was used for about a year next to the fryer of a restaurant kitchen and on which oil stains adhered was placed horizontally.

When 10 cc of tap water was dropped onto the oil-stained portion and wiped and cleaned with the melamine sponge obtained in Production Example 1, the oil-stain could be removed in a short time and the oil was not sticky. The same was true when the melamine sponge obtained in Production Example 2 was used.
For comparison, when the product was wiped and cleaned with the commercially available melamine sponge used in Production Examples 1 and 2, it took a lot of time to remove the oil stain, and the oil was still sticky.

Production Example 3
A commercially available melamine sponge for cleaning (melamine-based resin foam) was shaped to a height and width of 30 mm × 40 mm × 30 mm.

  In a 200 cc beaker, 187.8 g of ion-exchanged water and 12 g of anhydrous citric acid were added and stirred to completely dissolve the anhydrous citric acid. To this aqueous solution, 0.200 g of gardenia pigment (manufactured by Kiriya Chemical Co., Ltd.) was added and stirred until the solution was uniformly colored.

  This colored aqueous solution was accommodated in a glass beaker (φ70 mm × H100 mm) to a depth of 40 mm. The whole melamine sponge was immersed in the colored aqueous solution in the beaker for 10 seconds to impregnate the melamine sponge with the colored aqueous solution, and then the melamine sponge was taken out.

  The melamine sponge was frozen in a deep freezer at −15 ° C. overnight and then freeze-dried with a freeze dryer for 1 week.

  The obtained melamine sponge (cleaning material) contained citric acid almost uniformly throughout the sponge.

Production Example 4
A commercially available melamine sponge for cleaning (melamine-based resin foam) was shaped to a height and width of 30 mm × 40 mm × 30 mm.

  By adding 93.9 g of ion-exchanged water and 6 g of anhydrous citric acid in a glass beaker (φ70 mm × H100 mm) and stirring, anhydrous citric acid was completely dissolved. To this aqueous solution, 0.100 g of gardenia pigment (manufactured by Kiriya Chemical Co., Ltd.) was added and stirred until the solution was uniformly colored.

  This colored aqueous solution was accommodated in a glass petri dish (φ85 mm, height 13 mm) to a depth of 5 mm. The lower part of the melamine sponge was immersed in the colored aqueous solution in the petri dish for 2 seconds to impregnate the melamine sponge with the colored aqueous solution, and then the melamine sponge was taken out.

  Next, the colored aqueous solution was replenished in the glass petri dish so that the depth of the colored aqueous solution was 5 mm. The melamine sponge was impregnated with the colored aqueous solution by immersing it in the colored aqueous solution in the petri dish for 2 seconds with the upper side of the melamine sponge turned upside down, and then the melamine sponge was taken out.

  The melamine sponge was left in a thermostatic bath at 50 ° C. for 12 hours to completely evaporate water.

  The obtained melamine sponge (cleaning material) uniformly contained citric acid in the upper and lower portions of 5 mm respectively.

Example 2 (scale removal test)

  The sink with white scale adhered thereto was wiped and cleaned with a small amount of tap water using the melamine sponge obtained in Production Example 3, and the scale could be removed in a short time. The same was true when the melamine sponge obtained in Production Example 4 was used.

  For comparison, when wiping and cleaning was performed with the commercially available melamine sponge used in Production Examples 3 and 4, a strong force and a lot of time were required to remove scale.

Claims (6)

  A cleaning material comprising a melamine-based resin foam that contains a solid substance composed of carbonates or organic acids evenly or partly, wherein the solid substance composed of carbonates or organic acids is in water. A cleaning material, wherein each of the dissolved aqueous solutions exhibits weak basicity or weak acidity.   Part of the melamine-based resin foam is a containing part containing the solid substance, the other part is a non-containing part not containing the solid substance, and one of the surfaces of the melamine-based resin foam is one of The cleaning material according to claim 1, wherein the part is formed by the containing part and the other part is formed by the non-containing part.   The cleaning material according to claim 1 or 2, wherein the content of the solid substance in the portion containing the solid substance in the melamine-based resin foam is 0.1 to 50% by weight.   The cleaning material according to claim 1, 2 or 3, wherein a portion of the melamine-based resin foam containing the solid substance is colored with a pigment.   The cleaning material according to claim 1, wherein the cleaning material is made of the solid substance organic acid.   A method for producing the cleaning material according to claim 1, wherein a liquid containing the solid substance in a dissolved and / or dispersed state is impregnated in a required portion of the melamine resin foam, and then the melamine resin. A method for producing a cleaning material, comprising freeze-drying a foam.