JP3087934U - Cleaning sponge - Google Patents

Abstract

(57) [abstract] (with correction) [PROBLEMS] A cleaning sponge that can easily remove stubborn dirt using a melamine resin foam and that can be applied to an uneven surface with high durability. provide. SOLUTION: It has open cells 1 and has a bulk density of 8 to 20 kg.
/ m ³ melamine resin foam in the thickness direction, 15-
A sponge 2 for cleaning which is compressed to 75%
And This compression is preferably performed under a heating and pressing condition of 180 ° C. or more.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a cleaning sponge using a melamine resin foam.

[0002]

[Prior art]

 It is known to use melamine resin foams for cleaning. For example, Japanese Patent Application Laid-Open No. H11-128137 discloses a wiping cleaner, but a simple melamine resin foam is rigid and hard to remove stubborn dirt. And it could not be used with good durability.

[0003]

[Problems to be solved by the invention]

 It is an object of the present invention to provide a cleaning sponge which can easily remove stubborn dirt using such a melamine resin foam and can be applied to an uneven surface with high durability. .

[0004]

[Means for Solving the Problems]

In the present invention, the above problem was solved by compressing a melamine resin foam having open cells and a bulk density of 8 to 20 kg / m ³ to a thickness of 15 to 75% in the thickness direction. .

[0005] Such a compressed sponge is manufactured by heating and pressing in the thickness direction, and it is preferable to perform heating and pressing at 180 ° C or higher for about 1 to 7 minutes. In this case, it is preferable that the pre-heated sponge is heated and pressurized, and then cooled while being pressurized so that the compressed shape can be stably maintained.

The heating temperature is preferably about 180 to 250 ° C., particularly preferably about 200 to 230 ° C. The degree of compression is set so that the product maintains shape stability and moderate hardness, and has a thickness of 15 to 75%, particularly about 20 to 70%, so that open cells of the sponge remain. Good to be.

[0007]

[Embodiment of the invention]

Next, FIG. 1 shows an embodiment of the present invention. In this example, a melamine foam having a bulk density of about 9 kg / m ³ (a sheet having a thickness of 40 mm) having dense open cells 1 is heated to 200 ° C. for 5 minutes, and then the thickness is reduced to と. Pressurized so that The pressurization was performed at 200 ° C. for the first 2 minutes, and then the pressure was released when the temperature reached room temperature. As a result, a sponge 2 having an open cell 1 and a bulk specific gravity of about 18 kg / m ³ and a thickness of 20 mm having shape stability was obtained. This sponge was cut into a size of 80 mm x 110 mm to obtain a sponge for purification.

When the sponge was subjected to a wear test using a Taber abrasion tester, a wear wheel H-22, and a load weight of 500 g during wear, the sponge was worn 50 times, the thickness was reduced by 2 mm, and the thickness was 100 times. The weight loss was 4 mm. On the other hand, the melamine foam before compression (usually used as a wiping tool) was worn 50 times and had a thickness reduction of 6 mm, and did not withstand 100 times abrasion.

When the sponge obtained in this example was used after being moistened with water, stubborn dirt that could not be removed with a conventional sponge (melamine foam before compression) could be easily removed. Also, the conventional sponge (melamine foam before compression) is destroyed immediately when applied to an uneven surface, but the sponge obtained in this example can be applied stably and efficiently to an uneven surface. Was.

Next, a sponge obtained by compressing the melamine foam used in the above example to a thickness of ２, 及 び and a thickness of ／ in the same manner as in the above example was used. A wear test was performed. The results are shown in the following table together with the results of the wear test of the melamine foam before compression.

[0011]. Thickness loss (mm). Wear frequency Sample 1 Sample 2 Sample 3 Sample 4. 50 1 2 3 6. 100 345-where sample 1 is a 2/5 compact, sample 2 is a 1/2 compact, sample 3 is a 2/3 compact, and sample 4 is a melamine foam before compression.

[0012]

[Effect of the invention]

 The sponge of the present invention can easily remove stubborn dirt that could not be removed with a conventional sponge (melamine foam that cannot be compressed) by simply wiping it, and it can be applied durably to uneven surfaces. Good cleaning effect.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of a cleaning sponge, wherein A shows a conventional product (sponge before compression), and B shows a product of the present invention.

[Explanation of symbols]

 1 open cell 2 sponge

Claims (2)

[Utility model registration claims] Claims 1. An open cell having a bulk density of 8 to 20 kg / m
³ in the thickness direction of the melamine resin foam
A cleaning sponge characterized by being compressed to 5%. 2. The cleaning sponge according to claim 1, wherein the compression is performed under a heating and pressing condition of 180 ° C. or higher.