JP2009285316A - Cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a durable cleaner which prevents the front surface from being worn even in the case of an object to be washed with sticky dirt, is hardly caught and torn by the projected part of the object to be washed, and is hardly distorted. <P>SOLUTION: The cleaner 1 has a single or plurality of multiple knitted fabrics D including: a knitted fabric A where multiple openings Ap of less than 0.1 mm square by multiple stitches 10; a knitted fabric B with the multiple stitches 20; and connection yarn C connecting the mutually superimposed knitted fabrics A and B. The area ratio of a fiber coated area to the openings is 1 to less than 0.1 in the knitted fabric A. The end of the knitted fabric A and the end of the knitted fabric B are fixed and integrated in the cleaner 1. The cleaner is hardly worn in the front surface even in the case of the object to be washed with sticky dirt, is hardly caught and torn by the projected part of the object to be washed, and is hardly distorted so as to raise durability. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a cleaner suitable for tableware, bathroom, body washing, and the like.

  Conventionally, a cleaner is a polyurethane foam alone, or a polyurethane foam and a bulky nonwoven fabric bonded together and punched or cut into a size that is easy to hold. However, with this type of cleaner, there is a problem that the polyurethane foam alone has no dirt removal performance, and the type bonded to the nonwoven fabric is hard and it is difficult to wash narrow round dishes such as cups and glasses. In addition, there is a problem that tableware and hair get into the non-woven fabric or polyurethane foam, which makes it unsanitary.

  Therefore, in order to make it easier to wash dishes such as cups and glasses that have been rounded, cleaners have been developed in which polyurethane foam is covered with a cloth without being bonded to a bulky nonwoven fabric. However, in any case, since a soft polyurethane foam that easily contains water is used, there is a problem that the polyurethane foam itself is easily distorted during use and the durability is poor. When washing metal products such as metal colander or grilled fish on the fabric part, the cloth is caught by the convex part and is torn, and the cloth part is worn and easily broken by washing such as a pot with dirt. There was a problem.

  Accordingly, there is known a cleaner (see Patent Document 1) that does not use polyurethane foam but has improved water drainage and air resistance by, for example, a scouring method in which mesh layers of two layers of front and back are laminated. However, with this type of cleaner, the mesh opening is as large as 4 mm, and dirt is attached to the inside and it is not hygienic. The mesh portion is large, such as a metal colander or a grill for grilling fish. When washing the metal product, there was a problem that the opening of the mesh of the fabric was caught by the convex part and torn.

On the other hand, Patent Document 2 or Patent Document 3 describes a cloth or a cleaning tool that has improved drainage and durability by using a knitted fabric in which front and back ground structures are connected with a connecting thread without sewing or bonding. Is described.
Japanese Utility Model Publication No. 4-21359 Japanese Patent Laid-Open No. 5-148736 JP 2002-61056 A

  However, in the cloth or the cleaning tool described in Patent Document 2 or 3, the end portion (peripheral portion, periphery) of the fabric is not processed, and the connecting yarn protruding from the end portion is an obstacle during cleaning. It was difficult to use. Further, the connecting yarns connecting the knitted fabrics may be crushed and the cushioning property may be impaired, or the thickness may be reduced during use due to easy distortion and the usability may be deteriorated. Furthermore, since the opening portion is enlarged to improve the water drainage property, the opening portion is caught on the convex portion of the washing and easily broken, resulting in poor durability.

  An object of the present invention is to solve the above problems, and an object of the present invention is to provide a cleaner that is hard to wear even on a stuck wash, is difficult to be caught by a convex part of the wash, is not easily distorted, and has excellent durability. And

  The present inventor has devised a cleaner that achieves the object of the present invention as a result of diligent research in order to solve the above-described problems in the prior art.

  That is, in the cleaner according to the present invention, the first knitted fabric in which a large number of openings less than 0.1 mm square are formed by a large number of stitches and the second knitted fabric having a large number of stitches overlap each other. One or a plurality of multiple knitted fabrics having a connecting yarn connecting the second knitted fabric and the second knitted fabric, and the first knitted fabric has an area ratio of the fiber covering area to the opening portion of 1: 0. The number of the multiple knitted fabrics is less than 1, and the end of the first knitted fabric and the end of the second knitted fabric are fixedly integrated.

  According to the present invention, there is provided one or a plurality of multiple knitted fabrics in which the first knitted fabric and the second knitted fabric are connected by the connecting yarn, and the space between the first knitted fabric and the second knitted fabric is provided. There is a gap corresponding to the area connected by the connecting thread. This void can cause foaming, which is a necessary function of the cleaner. Furthermore, since the first knitted fabric and the second knitted fabric are connected via this gap, drainage and drainage are good, and hygienic use is possible. Moreover, moderate thickness and cushioning properties can be obtained due to the presence of the connecting yarn. Furthermore, the cleaner is made by fixing and integrating the end of the first knitted fabric and the end of the second knitted fabric of the multiple knitted fabric, making it easier to control the thickness and hardness and improving the usability. Even during long-term use, deformation hardly occurs and durability increases. Further, since the end of the first knitted fabric and the end of the second knitted fabric of the multiple knitted fabric are fixed and integrated, the connecting yarn is the end of the first knitted fabric and the second knitted fabric. Protruding from the part can be prevented from interfering with work, and convenience can be improved. The connecting yarn can be controlled in thickness, drainage performance, cushioning property and the like by selecting a fiber material and changing the connecting interval and connecting method. In addition, the first knitted fabric and the second knitted fabric are made of fabric when washing metal products such as metal colander or grilled fish by selecting a fiber material or changing the pattern. It is hard to get caught in the convex part, it is hard to tear, and it is possible to make it hard to wear even in a washed item with dirt, and it can control the stiffness and softness etc. according to the object to be washed, and improve the dirt removal performance It is possible.

  Furthermore, when multiple layers are formed by folding or stacking multiple knitted fabrics so that the first knitted fabric is arranged on the surface layer, the thickness and cushioning properties are controlled. This makes it easier to use, improves usability, does not easily deform even during long-term use, and increases durability.

  Further, when a single knitted fabric is provided and a single layer is formed by the multiple knitted fabric, it is thinner than a case where a plurality of layers are formed, and it is easy for an operator to handle.

  Furthermore, a cross point where the connecting yarns intersect is formed when viewed between the first knitted fabric and the second knitted fabric in a direction perpendicular to the surface direction of the first knitted fabric. It is preferable.

  Further, the connecting yarn forming the cross point connects the first stitch on the first knitted fabric side and the second stitch on the second knitted fabric side, and the second stitch is the first knitted fabric. In the surface direction, it is preferable that the stitches are separated from two to five in the wale direction or the course direction with respect to the reference stitch on the second knitted fabric side facing the first stitch.

  Furthermore, the connecting yarn forming the cross point connects the first stitch on the first knitted fabric side and the second stitch on the second knitted fabric side, and in the surface direction of the first knitted fabric, When a virtual reference line connecting the reference stitch on the second knitted fabric side opposite to the first stitch and the first stitch is defined, the included angle between the reference line and the connecting yarn is 30 ° to 60 °. Is preferred.

  Furthermore, it is preferable that at least one cross point is formed between the five courses by the connecting yarn.

  Furthermore, it is preferable that the connecting yarn is made of polytrimethylene terephthalate fiber or fiber mainly composed of polytrimethylene terephthalate.

  Furthermore, it is preferable that the end of the first knitted fabric and the end of the second knitted fabric are fixedly integrated with each other by sewing.

  Furthermore, it is preferable that the end of the first knitted fabric and the end of the second knitted fabric are fixedly integrated with each other by fusion.

  Further, it preferably has a thickness of 4 to 70 mm.

  According to the present invention, it is possible to provide a cleaner that is difficult to wear even on a stuck wash, is easily caught by the projection of the wash, is not easily torn, is not easily distorted, and has excellent durability.

  Preferred embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing an example of a cleaner according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view taken along the line II-II in FIG. FIG. 3 is a perspective view schematically showing a double knitted fabric, and FIG. 4 is an enlarged perspective view showing a connecting yarn.

  As shown in FIGS. 1 to 3, the cleaner 1 according to this embodiment includes a knitted fabric (first knitted fabric) A in which a large number of opening portions Ap (see FIG. 3) are formed by a large number of stitches 10. A double knitted fabric D comprising a knitted fabric B having a large number of stitches 20 and a knitted fabric A and a knitted fabric B that connect the knitted fabric B are provided. The cleaner 1 is configured by laminating two double knitted fabrics D (see FIG. 2) so that the knitted fabric A is arranged on the surface layer side. The two double knitted fabrics D may each be made of one type (same type) of material, or may be made of two or more types (different type) of material. At the end 1a of the cleaner 1, that is, the end of the overlapping double knitted fabric D, the ends of the plurality of knitted fabrics A and B are fixed and integrated.

  In addition, although the aspect which laminated | stacked the double knitted fabric D of 2 sheets is illustrated in this embodiment, the aspect which laminated | stacked the several double knitted fabric D of 3 or more sheets may be sufficient. Further, after the plurality of double knitted fabrics D are stacked, they may be folded and bundled, and the ends of the plurality of knitted fabrics A and B in a bundled state may be fixedly integrated. . In this case, since the crease portion is already closed, it is preferable that only the end portion other than the crease is fixedly integrated. Moreover, it may be composed of only a single (one) double knitted fabric D, and the end portions that are the entire periphery of the knitted fabric A and the knitted fabric B may be fixedly integrated. In the present embodiment, the double knitted fabric D will be described as an example of the multiple knitted fabric. However, the multiple knitted fabric is not limited to the double knitted fabric, and the triple knitted or quadruple which can obtain an appropriate thickness and cushioning property. May be a knitted fabric.

  The multi-knitted fabric according to the present invention can be knitted preferably with a double raschel machine or the like, but is not particularly limited. In addition, the multiple knitted fabric according to the present invention is preferably at least a part of the double knitted fabric described in JP-A-2-229247 and JP-A-2-74648, from the viewpoint of cushioning properties and elasticity. Double knitted fabric with a structure in which two connecting yarns in adjacent wale rows are connected diagonally in opposite directions to the stitches in the adjacent wale rows that are separated from the opposite stitches on the front and back sides, and stitches on which the connecting yarns face each other 2 to 5 wales and course stitches separated from each other at an angle of 30 to 60 degrees with respect to connecting yarns connecting the wales or stitches facing in at least one direction of the course direction. A double knitted fabric characterized in that the connecting yarn connected obliquely at an angle of 30 to 60 degrees with respect to the connecting yarn to be connected has at least one cross point between five courses. . In the present embodiment, a mode of forming cross points will be described in detail as an example.

As shown in FIG. 4, for example, two adjacent connecting yarns C ₁ and C ₂ are extracted from a plurality of connecting yarns C and considered. One connecting yarn C ₁ is coupled with a second stitch 20a of the first stitch 10a and knitted fabric B side of the knitted fabric A side. The second stitch 20a on the knitted fabric B side is separated by two in the course direction in the surface direction of the knitted fabric A with respect to the reference stitch 20x on the knitted fabric B side facing the first stitch 10a. Further, when defining a virtual reference line Sa connecting the first stitch 10a and the reference stitch 20x, included angle between the connecting yarn C ₁ between the reference line Sa is included in the range of 30 ° to 60 ° Yes.

The connecting yarns C ₂ the other is coupled with the fourth stitch 20b of the third stitch 10b and knitted fabric B side of the knitted fabric A side. Fourth stitch 20b of the knitted fabric B side, in the planar direction of the knitted fabric A, the course direction is opposite to the connecting yarn C ₁ with respect to the reference stitch 20y opposing knitted fabric B side to the third stitch 10b Two apart. Further, when defining a virtual reference line Sb connecting the third stitch 10b and the reference stitch 20y, included angle between the connecting yarn C ₂ between the reference line Sb is included in the range of 30 ° to 60 ° Yes.

Towards the direction perpendicular to the surface direction of the knitted fabric A, when viewed between knitted A and knitted fabric B, a connecting thread C ₁ and connecting yarns C ₂ appear to intersect. This intersection is the cross point X. Further, the cleaner 1 by a connecting thread C ₁ and connecting threads C _2, and at least one cross point X is formed between the 5 courses so as to ensure cushioning properties. In the present embodiment, the second stitch 20a on the knitted fabric B side of _one of the connecting yarns C1 is separated from the reference stitch 20x by two in the course direction. May be 5 away. The fourth stitch 20b of the other connecting yarn C ₂ of the knitted fabric B side is apart two in the course direction with respect to the reference stitch 20y, have five or away from the two in the wale or course direction Also good.

  The cleaner 1 is formed so that the knitted fabric A becomes the surface. The fiber material of the knitted fabric A is not particularly limited, and can be selected according to the object to be cleaned. Specifically, any of synthetic fibers such as polyester, polyamide, polyacrylonitrile, and vinylon, recycled fibers, and natural fibers such as silk, wool, and cotton may be used. From the viewpoint of durability, in order to make the opening portion small and small, the fiber material of the knitted fabric A is preferably a filament or spun yarn having a thickness of about 100 to 800 μm. However, the fiber constituting the filament or spun yarn The thickness of is not particularly specified.

  In addition, the pattern (texture) of the knitted fabric A and the knitted fabric B is less likely to be worn even on a dirty wash, and is less likely to be caught on the convex portion of the wash and difficult to break. However, it does not select patterns such as chains, denbi, ribs, and dots.

  From the viewpoint of durability, the opening portion Ap of the knitted fabric A is less than 0.1 mm square, that is, the dimension d on one side of the substantially rhombic opening portion Ap is 0 in order to make it difficult to get caught by the convex portion of the washing. .. preferably less than 1 mm. At this time, all the opening portions Ap of the knitted fabric A do not need to be less than 0.1 mm square, and the number of the opening portions may be 50% or more of the opening portions less than 0.1 mm. As described above, when the opening portion Ap is less than 0.1 mm square, that is, when the dimension d of one side of the substantially rhombic opening portion Ap is less than 0.1 mm, the surface portion is worn even in the washed clothes with dirt from the viewpoint of durability. It is difficult to break because it is difficult to catch on the convex part of the washing, and it is preferable.

  Furthermore, in order to make the surface portion difficult to wear even when the washed product is soiled, it is preferable that the area ratio of the fiber covered area to the opening portion Ap is less than 0.1 with respect to the fiber covered area “1”.

  In addition, the method of calculating | requiring the ratio of opening part Ap and fiber covering area was performed by expanding 10 times with a microscope, measuring in five or more observation places, and calculating | requiring the average value of this measured value. The opening Ap of the knitted fabric A can be enlarged by 10 times or 25 times with a microscope, measured at five or more observation points, and an average value of the measured values can be obtained.

  Further, the number of fibers of the knitted fabric A is preferably 10 to 24 courses / inch and 8 to 24 wales / inch. A knitted fabric satisfying such conditions can be knitted with a double raschel machine.

  For the arrangement of the yarns on the surface of the knitted fabric A or the knitted fabric B, a method is generally used in which yarns having the same fineness are arranged through each guide as one yarn. In order to suppress the jump of the monofilament constituting the connecting yarn C on the surface, the fineness of the surface yarn holding the connecting yarn C is equal to or more than the fineness of the monofilament used for the connecting yarn C. And good. More preferably, it is preferable to use a yarn having a fineness of 3 times or more the monofilament fineness. Further, the knitting wrapping of the heel constituting the surface layer is preferably knitted by overlapping in the opposite direction to the knitting wrapping of the connecting yarn C to be suppressed.

  The connecting yarn C is preferably a monofilament of synthetic fiber such as polytrimethylene terephthalate, polyester, polyamide, polyacrylonitrile, vinylidene chloride, vinylon or the like in order to impart an appropriate thickness and performance such as cushioning and resistance to distortion. In particular, for use over a long period of time, a polytrimethylene terephthalate fiber having a low elastic modulus and an appropriate elastic recovery rate or a fiber mainly composed of polytrimethylene terephthalate is more preferable. In order to have a low elastic modulus and an appropriate elastic recovery rate, it is preferable to contain 20% or more of the main component polytrimethylene terephthalate.

  By controlling the knitted fabric A and the connecting yarn C of the double knitted fabric D in this way, a thickness and cushioning properties suitable for the cleaner 1 can be obtained.

  The thickness of the cleaner 1 obtained by laminating two or more double knitted fabrics D is preferably 4 to 70 mm. Furthermore, 5-60 mm is more preferable, and 6-50 mm is more preferable in order to make it easier to wash an object to be cleaned having a long and narrow shape such as a glass or glass and to make it familiar to the hand.

  The knitting structure constituting the front and back surfaces of the cleaner 1 is not particularly limited. The surface can be made flat to improve the touch and hand feeling, and the surface can be raised to improve the touch and foaming. Moreover, the method etc. which give an unevenness | corrugation to the surface and improve the scraping off effect of dirt are used preferably. At this time, the knitting structure on the surface may be appropriately combined, for example, chain insertion with two sheets, single denimbi, double denbi, double cord, a combination of quinz cord and chain knitting. In this case, it is preferable that at least one of the reeds constituting the surface layer has a fineness difference between the adjacent yarns and the fineness applied to one needle. For example, if the threading arrangement is repeated for one thread of the same fineness and repeated for two, or the fineness of the thread that is passed through the second thread is made larger than the fineness of the thread that is threaded through the first thread, If it is a denbit structure which repeats etc., the surface will become uneven, and the scraping ability of dirt will improve.

  The fibers constituting the knitted fabric B (rear surface) are not particularly limited, but in order to improve the foamability and foam retention of the cleaner 1, a bulky yarn having crimps such as false twisted yarn may be used. The knitted structure at this time is also not particularly limited, but the flatness of the flat knitted structure is more improved than the knitted structure having the opening portion Ap like the mesh structure. In addition, in order to further improve foamability, it is also desirable to use a cloth, nonwoven fabric, sponge or the like as a product while the three-dimensional knitted fabric to be used is laminated (between the three-dimensional knitted fabric).

  The double knitted fabric D in which the two sheets are laminated is so that the connecting yarn C does not come out of the cut section of the double knitted fabric D, and the laminated double knitted fabric D is fixed and integrated. It is necessary to process the periphery. As a processing method of the peripheral edge of the laminated double knitted fabric D, it is preferable to perform fusion by sewing, high frequency, ultrasonic waves, heat, or the like in order to obtain a preferable form. The fixed integration means a state in which the double knitted fabrics D and the knitted fabric A and the knitted fabric B are in close contact with each other by sewing or fusion, and a form in which the connecting yarn C does not come out of the cut section. It refers to a form in which fine dust does not enter between the double knitted fabrics D and between the knitted fabrics A and B. In sewing, it is preferable to sew at a pitch of 2 to 8 stitches / cm with a single stitch of the main stitch. Further, in order to prevent peeling of the end portion, 3 to 7 stitches with a single stitch of the main stitch. It is more preferable to sew at a / cm pitch. Furthermore, in order to stabilize the shape of the cleaner 1, part of both end surfaces of the laminated knitted fabric such as the central portion of the cleaner 1 may be sewn with a thread or the like, or heat-sealed. Even when the double knitted fabric D forms a single layer or a plurality of layers of three or more, the end of the knitted fabric A and the end of the knitted fabric B are fixed and integrated by the same method. Can be made.

  In addition, as a method of laminating two or more sheets, the obtained double knitted fabric D may be appropriately selected and commercialized, such as a combination of front sides, back sides, front and back sides, and preferably the obtained double knitted fabric It is preferable that the front and back surfaces of the product obtained by folding back the ground D on the back side is constituted by the surface of the double knitted fabric D, that is, the knitted fabric A. It is preferable to use a kneaded type antibacterial yarn on one or both sides of the yarn constituting the front and back surfaces. When the antibacterial yarn is used or when the antibacterial yarn is not used, the resulting double knitted fabric D has antibacterial properties. It is also preferable to perform processing. The kneading type antibacterial agent preferably has high safety, for example, a silver compound (silver oxide or the like) is preferable, and the kneading concentration is preferably 0.01 to 3.0 wt%.

  The cleaner was produced by cutting, sewing, or ultrasonically heat-bonding a knitted fabric knitted using a 14 gauge, 13 mm double raschel knitting machine (HDLS6V-SL) equipped with 6 sheets.

[Example 1]
The knitted fabric of the cleaner uses a 14 gauge, 13 mm double raschel knitting machine (HDLS6V-SL) equipped with a 6 sheet kite, and an antibacterial agent on the two kites (L5, L6) that form the knitted fabric A on the front side. Acrylic spun yarn containing kneaded yarn 10 cotton count, two folds (L1, L2) forming the knitted fabric B on the back side, polyester multifilament 330T / 96f false twisted yarn, two pieces forming the connecting yarn C A double knitted fabric D having a basis weight of 620 g / m ² and a thickness of 10 mm was obtained using polytrimethylene terephthalate monofilament 390T / 1f for the ridges (L3, L4). In this connecting yarn C, two of the five yarns are obliquely connected at an angle of 45 degrees in the course direction separated from the stitches facing the surface direction of the knitted fabric A, and the connecting yarns form a cross point. It has a structure. The double knitted fabric D was cut into 20 cm × 18 cm, folded in half, and the periphery was sewn and fixed and integrated to prepare a cleaner. As a result of observing the produced cleaner with a microscope and measuring five locations at random, the opening is 0.008 to 0.003 mm ² and the ratio of the fiber coating area to the area of the opening is also measured. Was 0.05 with respect to the fiber covered area "1".

(Knitting structure and yarn arrangement)
L1: 1011/2322/101/21/2333/4544/3233/4544/2322 / The yarn arrangement is arranged in two guides in one guide, and the subsequent three guides are not threaded. That is, two polyester multifilament 330T / 96f false twisted yarns are aligned and put into one guide, the yarn is not put into the subsequent three guides, and the polyester multifilament 330T / 96f temporary yarn is put into one guide after that. Two twisted yarns are drawn and put, and the yarn is arranged by repeating the following three guides: no yarn.

  L2: 4544/3233/4544/2322/1011/2322/1011/2322 / Thread arrangement, without putting the yarn in the two guides, put two in one guide after that, put them in one guide, Do not put the thread into one guide after that. In other words, without putting the yarn into the two guides, draw two polyester multifilament 330T / 96f false twisted yarns into one guide and put them into one guide, and put the yarn into the following three guides. The yarn is arranged by repeating the following procedure: two polyester multifilament 330T / 96f false-twisted yarns are put together in one guide, and yarns are not put in the three guides thereafter.

  L3: 3254/3201/3254/2301/2354/2301/2354/3201 / In the yarn arrangement, one yarn is put in one guide, and no yarn is put in the following three guides. In other words, each polytrimethylene terephthalate monofilament 390T / 1f is put in one guide, the yarn is not put in the subsequent three guides, and one polytrimethylene terephthalate monofilament 390T / 1f is put in one guide after that. Then, the yarn is arranged by repeating the following three guides: Do not put the yarn.

  L4: 2310/2345/2310/3245/3210/3245/3210/2345 / Thread arrangement, without inserting the yarn into two guides, put one yarn into one guide after that, one after that Do not thread the guide. In other words, the yarns are not put into the two guides, the polytrimethylene terephthalate monofilament 390T / 1f is put into one guide one by one, and the yarns are not put into the following three guides. A single polytrimethylene terephthalate monofilament 390T / 1f is put into one guide, and the yarn is placed by repeating the following three guides: no yarn.

  L5: 0001/1110 / In the yarn arrangement, two yarns are aligned and put in one guide, and one yarn is put in one guide thereafter. That is, two 10 cotton counts of acrylic spun yarn containing antibacterial agent kneaded yarns are put together in one guide, and then 10 cotton counts of acrylic spun yarn containing antibacterial agent kneaded yarns are put in one guide. In this process, the yarn is arranged.

  L6: 4400/0044/4488/8844 / In the yarn arrangement, one yarn is put into every guide. That is, 10 yarn counts of acrylic spun yarn containing antibacterial agent kneaded yarn are placed in one guide one by one.

[Example 2]
The same knitted fabric as in Example 1 was cut into 10 cm × 32 cm, folded in half, and manufactured by heat-sealing the periphery.

[Example 3]
The same knitted fabric as in Example 1 was cut into 10 cm × 32 cm, folded in half, and produced by high-frequency heat fusion around the periphery.

[Example 4]
The 14K double raschel knitting machine is used for the cleaner. Polyvinylidene chloride monofilament 900d / 20f is used for the front knitted fabric A, polyester multifilament 330T / 96f is used for the back knitted fabric B, and polytrimethylene terephthalate is used for the connecting yarn C. A double knitted fabric D having a basis weight of 620 g / m ² was obtained using monofilament 200T / 1f. The connecting yarns C are obliquely connected at an angle of 45 degrees in the course direction where two of the five yarns are separated from the stitches facing the surface direction of the knitted fabric A, and the connecting yarns C cross the cross point X. It has a structure to be formed. The double knitted fabric D was cut into 20 cm × 18 cm, folded in half, and the periphery was sewn and fixed and integrated. The opening portion of the produced cleaner was 0.004 to 0.001 mm ² , and the area ratio of the fiber covered area to the opening was 0.08 with respect to the fiber covered area “1”.

[Example 5]
The 14K double raschel knitting machine is used for the cleaner. Polyester multifilament 500T / 640f is used for the front knitted fabric A and back knitted fabric B, polyamide monofilament 240T / 1f is used for the connecting yarn C, and the basis weight is 550 g / m2. The double knitted fabric D was obtained. In this double knitted fabric D, the two connected yarns in the wale row where 20% of the connected yarns C are adjacent to each other are the opposite directions of the stitches in the adjacent wale row separated from the stitches facing the surface direction of the knitted fabric A. It is the structure where it was connected to diagonally. The double knitted fabric D was cut into 20 cm × 18 cm, folded in half, and the periphery was sewn and fixed and integrated. The opening portion of the produced cleaner was 0.009 to 0.002 mm ² , and the area ratio of the fiber covered area to the opening was 0.02 with respect to the fiber covered area “1”.

[Comparative Example 1]
The cleaner is a 15 cm × 8 cm sponge (commercial product) having a urethane foam covered with a polyester knitted fabric.

[Comparative Example 2]
The cleaner is a sponge (commercially available) in which a urethane foam and a nylon nonwoven fabric are bonded together.

[Comparative Example 3]
Using a double raschel machine with two 18-gauge needle rows, 360d / 3f polyvinylidene chloride fiber is used as the fiber forming the two-layer mesh knitted fabric, and 200d nylon monofilament fiber is used as the connecting yarn. Was used to obtain a knitted fabric with a basis weight of 500 g / m ² . This knitted fabric is cut into 20 cm × 15 cm, folded in half, and the periphery is sewn. The thickness of the cleaner thus prepared was 8 mm, the opening portion was 0.5 to 2.5 mm ² , and the area ratio of the fiber covered area to the opened portion was 0.5 with respect to the fiber covered area “1”.

  And the measurement of Examples 1-5 and Comparative Examples 1-3 was performed about each viewpoint of the repeated compressive strain test demonstrated below, peeling in use, tearing in use, and the difficulty of tearing by wear in use. . The measurement results are shown in Table 1.

<Repetitive compression strain test>
JIS K 6400 Part 4: Defined in compression residual strain and cyclic compression strain B method. The test piece was each cleaner itself. The evaluation in Table 1 is as follows. As shown in Table 1, Comparative Examples 2 and 3 had a test result of ◯ (good), but Comparative Example 1 had a test result of × (impossible). On the other hand, Examples 1 to 5 all had the test result of ◎ (excellent).
◎ ... 0.1-8.0%
○ ... 8.1 to 12.0%
× ・ ・ ・ 12.1% or more

<Peeling off during use>
Ten men and women in their 30s were used as a cleaner for a month, and it was visually confirmed whether there was any peeling or fraying at the edges. The evaluation in Table 1 is as follows. As shown in Table 1, Comparative Examples 1 and 3 were ◎ (excellent) test results, but Comparative Example 2 was a × (impossible) test result, and fraying and peeling were confirmed. On the other hand, Examples 1 to 5 all resulted in a test result of ◎ (excellent), and no fraying or peeling was confirmed.
◎ ・ ・ ・ No fraying or peeling was confirmed × ・ ・ ・ Fraying or peeling was confirmed

<Tear during use>
For 10 men and women in their 30s, the cleaners were used for a month, especially those with irregularities such as wire nets and grills, and the net surface was checked for tears. The evaluation in Table 1 is as follows. As shown in Table 1, Comparative Examples 1 to 3 all had x (impossible) test results, and tearing was confirmed. On the other hand, Examples 1 to 5 all resulted in a test result of ◎ (excellent), and no breakage was confirmed. In Comparative Example 2, since there was no net on the surface, the urethane foam part was evaluated.
◎ ・ ・ ・ No tear was confirmed × ・ ・ ・ Tear was confirmed

<Difficult to tear due to wear during use>
Cut each cleaner into a 2cm square, wet it with about 1cc of water, put a weight of 500g, reciprocate horizontally on water-resistant abrasive paper # 2000 (manufactured by Sankyo Rikagaku) about 15cm, and cut completely The number of times until was counted. The evaluation in Table 1 is as follows. As shown in Table 1, Comparative Examples 1 and 2 had a test result of x (impossible), and it was confirmed that the tear was broken in less than 30 round trips. On the other hand, Examples 1 to 5 and Comparative Example 3 had a test result of ◎ (excellent), and no breakage was confirmed 30 times or more. In Comparative Example 2, since there was no net on the surface, the urethane foam part was evaluated.
◎ ... Cut out after 30 round trips × ... Cut out after 30 round trips

  The present invention can be widely used as products relating to tableware cleaners, bathroom cleaners, and body washing tools.

It is a perspective view which shows the cleaner which concerns on embodiment of this invention. It is sectional drawing along the II-II line of FIG. It is a perspective view showing the double knitted fabric concerning this embodiment typically. It is a perspective view which expands and shows the connection thread concerning this embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Cleaner, 1a ... End part, 10, 10a, 10b ... stitch (1st knitted fabric side), 10x, 10y ... standard stitch, 20, 20a, 20b ... stitch (2nd knitted fabric side), A ... Knitted fabric (first knitted fabric), B ... knitted fabric (second knitted fabric), C ... connecting yarn, D ... double knitted fabric (multiple knitted fabric), Ap ... opening portion, X ... cross point.

Claims (11)

A first knitted fabric in which a large number of openings less than 0.1 mm square are formed by a large number of stitches, a second knitted fabric having a large number of stitches, the first knitted fabric and the second knitted fabric overlapping each other Comprising one or a plurality of multiple knitted fabrics having connecting yarns connecting the knitted fabrics,
In the first knitted fabric, the area ratio between the fiber covered area and the opening portion is less than 1: 0.1,
In the single or plural knitted fabrics, the end of the first knitted fabric and the end of the second knitted fabric are fixedly integrated. A plurality of the multiple knitted fabrics,
2. The cleaner according to claim 1, wherein a plurality of layers are formed by folding or laminating a plurality of the multiple knitted fabrics so that the first knitted fabric is arranged on a surface layer. Comprising a single knitted fabric,
The cleaner according to claim 1, wherein a single layer is formed by the multiple knitted fabric.   When the space between the first knitted fabric and the second knitted fabric is viewed in a direction perpendicular to the surface direction of the first knitted fabric, a cross point where the connecting yarns intersect is formed. The cleaner as described in any one of Claims 1-3 characterized by the above-mentioned. The connecting yarn forming the cross point connects the first stitch on the first knitted fabric side and the second stitch on the second knitted fabric side,
The second stitch has two to five in the wale direction or the course direction with respect to the reference stitch on the second knitted fabric side facing the first stitch in the surface direction of the first knitted fabric. 5. The cleaner according to claim 4, wherein the cleaner is a separated stitch. The connecting yarn forming the cross point connects the first stitch on the first knitted fabric side and the second stitch on the second knitted fabric side,
When a virtual reference line connecting the reference stitch on the second knitted fabric side facing the first stitch and the first stitch is defined in the surface direction of the first knitted fabric, the reference The cleaner according to claim 4, wherein an angle between the line and the connecting yarn is 30 ° to 60 °.   The cleaner according to any one of claims 4 to 6, wherein at least one of the cross points is formed between five courses by the connecting yarn.   The cleaner according to any one of claims 1 to 7, wherein the connecting yarn is composed of polytrimethylene terephthalate fiber or fiber mainly composed of polytrimethylene terephthalate.   9. The multiple knitted fabric according to claim 1, wherein an end portion of the first knitted fabric and an end portion of the second knitted fabric are fixedly integrated by sewing. The cleaner described.   9. The multiple knitted fabric according to claim 1, wherein an end portion of the first knitted fabric and an end portion of the second knitted fabric are fixedly integrated by fusion. The cleaner described in the section.   It has a thickness of 4-70 mm, The cleaner as described in any one of Claims 1-10 characterized by the above-mentioned.

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