JP2006025811A - Filtering tool made of cloth - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent disposal after use and to filter a tasty beverage by making a filtering tool from cloth. <P>SOLUTION: A side cloth 3 is sewn to the peripheral edge of a circular bottom cloth 2, the upper edge of the side cloth 3 is folded over to the outer side, sewn together and turned to a wire insertion part 4, a wire 5 is annularly inserted to the wire insertion part 4, the annular shape of the wire 5 is energized so as to be spread outwards, the weight of the wire 5 does not slack the side cloth 3, and thus the slack of the side cloth 3 is prevented. Thus, the situation that the upper edge of the side cloth 3 is slackened, an upper surface opening 11 at the upper part of the filtering tool made of the cloth is closed and it is troublesome to put coffee beans in, and the situation that the side cloth is slackened and the coffee beans spill out or the like are eliminated. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a cloth filter, and more particularly to a cloth filter for filtering coffee or tea.

  Conventionally, a paper filter is well known as a filter for filtering such coffee or tea. In the case of a large-sized paper filter, the central portion of the circular paper has a circular bottom surface, and the periphery of the bottom surface is bent so as to stand up in a bowl shape to be tapered. This filter is set in a filter, and ground coffee beans are put into it, hot water is poured into it, and decoction is filtered.

  However, such a filter is discarded after the coffee is filtered once, and is so-called disposable, and has a large problem in terms of wasteful and effective use of resources.

  In addition, as shown in FIG. 6, there is a cloth filter similar to the shape of a goldfish scoop, for filtering coffee. In this filter, a wire grip portion 31 is connected to a wire ring, and a bag-like cloth portion 33 is sewn to the ring portion 32. The cloth part was swelled in a three-dimensional manner by sewing a plurality of cloths, and the upper surface opening of the cloth part was sewn to the ring part 32 of the wire.

  However, such a filter is not disposable and is excellent in terms of effective use of resources, but has a problem that it has a grip portion 31 and is inconvenient to store and carry. Further, since the ring portion 32 of the wire is not elastically deformed but plastically deformed, the upper surface opening cannot be urged outwardly to be widened.

  Recently, the paper filter seems to be more widely used than the cloth filter because of the convenience of the disposable. For this reason, coffee brewing containers called drippers on which the paper filters are installed are widely provided in homes and coffee shops.

  If the use of the paper filter is stopped and the filter is switched to a cloth filter, the filter is not disposable, but the problem arises that the coffee brewing container called the dripper is also wasted.

In view of this, it was also considered to brew coffee by setting the cloth filter in the coffee brewing container. However, in this case, the cloth part 33 of the cloth filter cannot be inserted exactly into the inner surface of the coffee brewing container, so that the wrinkles approach and the ground coffee beans are filtered for convenience. I can't put it in the bottom of the bowl. Moreover, even if the coffee beans can be put in well, the ring portion and the grip portion 31 of the cloth filter are obstructed, resulting in inconvenience in work. The weight can even pop out of the coffee brewing container and fall off.
Japanese Utility Model Publication No. 7-12028 JP-A-5-176844 Japanese Utility Model Publication No. 9-56598

  The present invention has been made to solve the above-described problems, and an object of the present invention is not to be disposable, it is possible to achieve effective use of resources, and coffee brewing that has already been widely used. An object is to provide a cloth filter that can be used as it is and can effectively use an old device as it is.

In order to achieve the above object, the cloth filter of the present invention is made of a cloth capable of filtering coffee or tea, and is joined to a substantially flat and substantially circular bottom cloth made of this cloth and to the periphery of the bottom cloth without any gap. The side cloths extending in a substantially tapered shape obliquely upward and slightly outward, and the side cloths are joined to each other without a gap, whereby the bottom cloth and the side cloth are formed into a bag shape without a gap, The bottom cloth has a diameter of several centimeters to several tens of centimeters, the side cloth has a height of several centimeters to several tens of centimeters, and the upper edge of the side cloth is folded back to the outside. An insertion portion formed by stitching to the outer side surface of the cloth, and a weight that does not loosen the side cloth while energizing the annular portion so that the annular portion is extended outwardly and is not loosened. And a wire to prevent the fabric from slackening.

  As a result, it is possible to effectively use resources without making the filtering tool disposable, and the conventional brewing container for paper filter can be used as it is and there is no waste. Also, the upper edge of the side cloth is loosened and the top opening of the cloth filter is closed, making it difficult to put coffee beans, or the side cloth 3 is loosened and the coffee beans spill out. There are also effects such as disappearance.

(1) Structure of the cloth filter 1 FIG. The cloth of the cloth filter 1 is a flat cloth in which a double thread having a brush is twilled, and can filter coffee or tea. Twill weaving with twin yarns is difficult to clog and does not shrink when washed.

  However, other types of yarns may be used, and other types of weaving methods such as plain weave, swoosh, and knitted fabric may be used. The material of the fabric yarn is 80% cotton and 20% polyester, but yarns of other materials such as natural fibers, regenerated fibers, synthetic fibers or blended yarns thereof may be used.

  The cloth of the bottom cloth 2 and the side cloth 3 of the cloth filter 1 has a single warp yarn of “12 to 20”, for example, “16”, “40 to 60” per inch, for example, “53.26”. The weft yarn is a double yarn and the yarn count is “16 to 24”, for example “20”, and is woven at a density of “50 to 70”, for example “60” per inch. The material of these warps and wefts is “100% to 60% cotton, 0% to 40% polyester”, for example, “80% cotton, 20% polyester”.

  Raising of the cloth is formed only on the front side of the cloth, that is, only on the inner side of the cloth filter 1 bottom cloth 2 and side cloth 3. You may use the cloth which has raising on both sides. By this raising, the ground coffee beans can be softly received, and when the coffee beans are steamed, the coffee beans are easy to swell, the taste of the coffee becomes deeper, and there is an advantage that the body becomes rich and delicious.

  The bottom cloth 2 of the cloth filter 1 is substantially flat and substantially circular and has a single cloth, and has a diameter of several centimeters to several tens of centimeters, for example, 10 to 11 centimeters. Of course, a polygonal shape, a rectangular shape, an elliptical shape, or the like may be used, or a plurality of cloths may be sewn. On the peripheral edge of the bottom cloth 2, a side cloth 3 of a band fan-shaped or curved belt-like single cloth is sewed and joined without a gap.

  In the sewing of the bottom cloth 2 and the side cloth 3, the outer edge of the bottom cloth 2 and the lower edge of the side cloth 3 are overlapped and extended outward, and the overlapped portion protruding to the outside is edged with a sewing machine from the outside. Overlock stitching (ground stitching, collar over) is performed to form the bottom edge overlock stitching portion 12 so that the edge of the filter cloth 2 is not frayed at the stitched portion between the bottom cloth 2 and the side cloth 3.

  The side cloth 3 extends from the bottom cloth 1 obliquely upward and slightly outward in a tapered shape, and has a height of several centimeters to several tens of centimeters, for example, 9 to 10 centimeters. Both side edges of the single side cloth 3 are sewn together and joined together to form a stitching line, whereby the bottom cloth 2 and the side cloth 3 are formed into a bag shape without a gap.

  In the sewing of the side cloths 3, the edges of the side cloths 3 are overlapped and extended outward, and the overlapped portion protruding to the outside is subjected to edge stitching (ground stitching, collar over) with a sewing machine from the outside. As a result, the side edge stitching portion 6 is formed and the edge of the filter cloth 2 is not frayed. The side cloths 3 are stitched together before the bottom cloth 2 and the side cloth 3 are stitched together.

  Therefore, the cloth filter 1 has a tapered / mortar shape, and when it is turned upside down, it has a truncated cone shape. The diameter of the upper edge of the side cloth 3 is several tens of centimeters, for example, 17 to 18 centimeters. The side cloth 3 may have a rectangular shape, and in this case, when the cloth filter 1 is turned upside down, it becomes just a cylinder. Further, the side cloth 3 may be one in which a plurality of cloths are stitched.

  The portion of the upper edge of the side cloth 3 having a width of about 1 centimeter is folded outward to form a folded portion 8, and the upper edge 10 of the folded portion 8 is subjected to edge stitching (ground stitching, collar over). Thus, the upper edge rim 9 is formed so that the edge cannot be unraveled.

  On the upper side of the upper edge edge portion 9 of the folded portion 8 (the lower side before folding), the folded portion 8 is stitched to the outer surface of the side cloth 3 and joined (sewn) to form the upper edge stitching line 13. Yes. A tunnel-shaped wire insertion portion 4 is formed by this folding stitching. A single wire 5 is inserted into the wire insertion portion 4 in an annular shape. The stitching of the upper edge stitching line 13 is straight stitching by a sewing machine.

  The wire 5 has elasticity, is usually linear, and can be easily elastically deformed. Therefore, when the wire 5 is inserted through the wire insertion portion 4, it is elastically deformed in an annular shape, so that the upper edge of the side cloth 3 is expanded outward and the upper surface opening 11 is greatly expanded. Become. Further, the total weight of the wire 5 is light and does not loosen the side cloth 3.

  Therefore, the upper surface opening 11 of the cloth filter 1 can be widened outward, the upper edge of the side cloth 3 is loosened, the upper surface opening 11 of the cloth filter 1 is closed, and coffee beans are inserted. The side cloth 3 is not loosened and the coffee beans are not spilled out.

(2) Wire 5
FIG. 3 shows a cross-sectional structure of the wire 5. As shown in FIG. 3, the wire 5 is formed by, for example, bundling seven wires each having a wire diameter of 0.1 to 0.3 mm, for example, 0.165 mm, and twisting them in a spiral shape. A wire or the like that is twisted in a spiral shape so that it cannot be removed is used. Of course, the wire 5 may be made of a metal wire having a single cross section or a resin wire.

  The metal wire 5 (wire) is made of a material that is not easily rusted, such as stainless steel, brass, copper, aluminum, titanium, and tungsten. Both ends of the wire wire 5 are heated and thin metal threads are welded to each other. As a result, there is no danger of the end of the wire being unwound and making a hole in the side cloth 3 to break it, or injuring a finger or the like.

  Specifically, the wire 5 has a thickness of 0.75 to 3.0 millimeters, for example, about 1.5 millimeters, and a weight per unit length (1 meter) of 8 to 11 grams, for example, about 8.9 grams. And the cutting load is 150 to 250 kilograms, for example about 190 kilograms.

  The overall length of the wire 5 is 50 to 90 centimeters, for example, about 65 centimeters, and the overlapping portion is 5 to 40 centimeters, for example 12.5 centimeters. Thus, the total weight of the wire 5 is 4 to 10 grams, for example 4.5 to 8, for example about 5.8 grams.

  Therefore, the wire 5 does not loosen the side cloth 3. Therefore, the wire 5 has a weight, an elastic force, a property, a characteristic, and a material that prevent the side cloth 3 from loosening. As a result, the upper edge of the side cloth 3 is loosened and the upper surface opening 11 of the cloth filter 1 is closed, and it is difficult to put coffee beans, or the side cloth 3 is loosened and coffee beans start to spill. It won't be trapped.

  Since the total length of the wire 5 is longer than the total length of the wire insertion portion 4, both ends of the wire 5 overlap each other. Therefore, the elastic urging force of the wire 5 does not cause both ends of the wire 5 to sharpen the upper edge of the side cloth 3, and the wire insertion portion 4 of the side cloth 3 is damaged or torn at this pointed portion. It won't be trapped.

  In addition, there is a portion where the upper edge suture line 13 is not sewn in one place of the wire insertion portion 4, and a wire takeout port 7 is formed at this location, and the wire 5 is inserted and pulled out through the wire takeout port 7. It is a function. The position of the wire take-out port 7 is close to the side edge over stitching portion 6 of the side cloth 3. In the wire take-out port 7, the upper edge edge 9 is formed without the upper edge stitching line 13. In some cases, the upper edge rim portion 9 of the takeout port may be omitted.

  In the wire takeout port 7, the stitching of the upper edge 10 of the folded portion 8 of the side cloth 3 to the side cloth 3 is partially omitted, and this is the wire takeout port 7. Since the wire 5 can be easily pulled out by such a wire take-out port 7, the damaged wire 5 can be used when the cloth filter 1 is recycled, or when it is diverted to other articles such as shoe polish or wire pile. There is no inconvenience even when replacing.

  Since such a wire take-out port 7 is opened downward on the outside of the cloth filter 1, coffee powder and tea leaves do not enter. Therefore, coffee powder and tea leaves do not adhere to the wire 5, and it may be hygienic. If a plurality of such wire take-out ports 7 are provided along the upper edge 10 at equal intervals or at arbitrary intervals, even if coffee powder or tea leaves enter, it can be easily discharged, and hygienically Are better. If this wire take-out port 7 is made one, the possibility of entering coffee powder or tea leaves is reduced.

  The overlapping portion of both ends of the wire 5 is shifted from the position of the wire takeout port 7. Thereby, the wire 5 does not jump out of the wire takeout port 7 and is safe. When the overlapping portion of both ends of the wire 5 coincides with the position of the wire takeout port 7, the wire 5 can be easily pulled out. However, even if the overlapping part of both ends of the wire 5 is displaced from the position of the wire takeout port 7, the wire insertion portion 4 can be moved and the position of the wire 5 can be shifted, so that it is easy to pull out the wire 5 again. .

  The wire 5 may be plural instead of one. In this case, the wires 5 are arranged so that the respective ends are slightly shifted. As a result, both ends of the wire 5 do not sharpen the upper edge of the side cloth 3 due to the elastic biasing force of the wire 5, and the wire insertion portion 4 of the side cloth 3 is damaged or broken at this pointed portion. You wo n’t be lost.

  Both ends of the wire 5 may be joined. In this case, both ends of the wire 5 are spot-electrically welded, or hooks are attached to both ends, and these hooks are connected. As a result, both ends of the wire 5 do not sharpen the upper edge of the side cloth 3 due to the elastic biasing force of the wire 5, and the wire insertion portion 4 of the side cloth 3 is damaged or broken at this pointed portion. You wo n’t be lost.

  In order to pull out the wire 5 from the wire take-out port 7, the hook is disconnected or an arbitrary portion of the wire 5 is cut. If the ends of the wire 5 are overlapped without being joined / connected, the wire 5 can be easily taken out from the wire takeout port 7.

  The cloth filter 1 is formed into a bag shape by the above-described stitching, and is inserted into a conventional coffee brewing container called a dripper, into which coffee or tea is poured and hot water is poured. Thereby, the cloth filter 1 of the present invention can effectively use the conventional coffee brewing container for the paper filter as it is.

  Moreover, when the paper filter is set in the coffee brewing container, the boundary between the bottom surface and the side surface of the filter may be broken, and coffee beans may leak out. However, the cloth filter 1 of the present invention may be used. Then, since the bottom cloth 1 and the side cloth 3 are firmly sewn, the above inconvenience is eliminated.

  When the cloth filter 1 is stored and transported in a bag or the like, the side cloth 3 is placed so that the bottom cloth 2 is accommodated in the wire insertion portion 4 and the wire 5 without changing the wire 5 as it is. Is folded, and the bottom cloth 2 and the side cloth 3 are accommodated in the wire insertion part 4 and the wire 5. Thereby, it becomes a flat shape and does not become bulky when transporting.

(3) Effects of Wire 5 FIGS. 4 and 5 show the effects of the wire 5 and the like. As described above, the wire 5 is elastic and is usually linear, and is elastically deformed in an annular shape in the wire insertion portion 4, so that the upper edge of the side cloth 3 is expanded outwardly and the upper surface opening 11. It will be energized to widen. With such an urging, as shown in FIG. 5, the upper edge of the side cloth 3 is not loosened and falls into the cloth filter 1 and the upper surface opening 11 of the cloth filter 1 is not closed.

  If the cloth filter 1 is made cylindrical rather than the tapered / mortar shape, the side cloth 3 will not fall easily. This is because the side cloth 3 is more unlikely to fall in the standing state than in the oblique state. However, since the cloth filter 1 has to be tapered / mortared, the side cloth 3 is in a slanted state and has a fate that easily falls down. When one part of the side cloth 3 falls down, the other part of the side cloth 3 is pulled up by this, and the opposite side falls down inside as shown in FIG.

  However, if the entire periphery of the upper side of the side cloth 3 is urged almost uniformly with the wire 5, the force to fall down on one side of the side cloth 3 is evenly distributed to other places. It is possible to prevent a part of the side cloth 3 from falling down. Thus, the wire 5 having the outward biasing force not only prevents the side cloth 3 from falling inward but also prevents it from falling outward.

  Further, since the wire 5 urges the upper edge of the side cloth 3 almost uniformly outward, the upper edge of the side cloth 3 and the wire insertion portion 4 are pulled, so that the looseness is eliminated and wrinkles do not occur. Become. Then, the wire takeout port 7 is also pulled left and right, and the port is naturally closed in a straight line.

  Further, since the inclination of the upper edge folding portion 8 is larger than the inclination of the main body of the side cloth 3, the side cloth 3 is slightly bent outward in the vicinity of the wire takeout port 7, as shown in FIG. Then, the wire takeout port 7 is closed. As a result, dust does not enter from the wire take-out port 7, and coffee powder and tea leaves do not enter. The same applies to the case where the upper edge folded portion 8 is folded inside the side cloth 3 and the wire takeout port 7 is formed inside the side cloth 3.

(4) Experimental results / effects According to the experimental results, it was confirmed that the cloth filter 1 of the present invention has the following advantages over the conventional paper filter.
(A) The taste of coffee and tea was mellow and mellow compared to the monotonous taste.
(B) The coffee bean required for coffee beverage extraction was about 20% less than about 10 g, about 8 g.

(C) The state of the beans at the time of extraction was less likely to be agitated and clayy while the coffee beans changed to a clay shape over time.
(D) The optimum method of grinding coffee beans (grind) can be applied in a wide range from mid-grinding to coarse-grinding only for mid-milling.
(E) Although the degree of swelling of the coffee beans is small, it can be increased, which is advantageous for extracting the taste.

(F) Since it is not disposable and can be used repeatedly many times if it is washed, the amount of trash is reduced and it can contribute to the effective use of resources.
(G) Even if it becomes old, it can be used for polishing, needles, etc., and there is no waste.
(H) Since the wire can be pulled out easily, recycling work is easy.

(5) Other Embodiments The present invention is not limited to the above embodiments, and various modifications can be made. For example, the wire takeout port 7 may be plural instead of one. In this case, a plurality of wire takeout ports 7 are formed at equal intervals on the outside of the wire insertion portion 4. A plurality of wires 5 having the same length are inserted from the plurality of wire take-out ports 7 respectively. Thereby, each end of the plurality of wires 5 can be shifted at equal intervals.

  Further, the beverage filtered by the cloth filter 1 may be coffee, tea, Japanese tea, other teas, fruit juice, juice, milk, liquor, and the like.

  Further, although the wire take-out port 7 is formed downward on the lower side of the wire insertion portion 4, one or a plurality of the wire extraction ports 7 may be formed laterally on the outer surface of the wire insertion portion 4. Such a lateral opening may be formed so as not to sew the portion along the side edge overhanging stitching portion 6 in the folding of the upper edge of the side cloth 3, and the opening can be easily manufactured.

  Further, one or a plurality of such wire takeout ports 7 may be formed upward on the wire insertion portion 4 by cutting off a part of the upper edge of the wire insertion portion 4. The wire insertion portion 4 may be formed inside the upper edge of the side cloth 3 by bending the upper edge of the side cloth 3 inward. In this case, the wire takeout port 7 may be formed inside the side cloth 3. The wire takeout port 7 may be any as long as the wire 5 can be inserted / drawn out.

  In addition, the upper edge of the side cloth 3 is not folded outward, but one or a plurality of other belt-like cloths or other band sheet materials are sewn along the outer peripheral upper edge of the side cloth 3 to form a wire. The insertion part 4 may be formed. Further, a plurality of short bellows-like and straw-like tubes are bonded or stitched along the outer peripheral upper edge or inner peripheral upper edge of the side cloth 3 to form the wire insertion portion 4, and the wire 5 is inserted into the straw. It may be inserted. In this case, the gap between the straws becomes the wire takeout port 7.

  The material of the bottom cloth 2 and the side cloth 3 is not limited to the cloth described above, and any material may be used as long as coffee or tea can be filtered. The bottom cloth 2 and the side cloth 3 are not a single cloth, but may be a plurality of cloths laminated or stitched together.

  The wire 5 is not only a straight wire, but also a spiral / curl cord like a nichrome wire, a wavyly swung top and bottom or left and right, a pipe with a hollow center, a metal wire Any material may be used as long as the upper edge of the side cloth 3 and the wire insertion part 4 can be urged outward, such as a material in which the periphery of the material is coated with resin.

  The wire take-out port 7 may be omitted. In this case, the wire 5 is completely sealed in the wire insertion portion 4. When the wire 5 is exchanged or taken out / inserted, a part of the edge stitching line 13 is unwound to form a takeout port. The wire 5 may be shortened to be shorter than the length of the wire insertion portion 4.

(4) Advantages of other inventions [1] The cloth is made of a cloth capable of filtering coffee or tea, and is joined to a substantially flat and substantially circular bottom cloth made of this cloth without any gaps on the periphery of the bottom cloth. It is a side cloth that extends slightly outwardly in a taper shape, and the side cloths are joined together without a gap, thereby forming a bag shape with no gap between the bottom cloth and the side cloth. Is several centimeters to several tens of centimeters, and the side cloth has a height of several centimeters to several tens of centimeters,
An insertion portion formed by folding the upper edge of the side cloth outward and stitching the upper edge to the outer surface of the side cloth, and an annular portion inserted through the insertion portion so that the annular shape extends outward. A cloth filter comprising a wire that prevents the side cloth from slacking with a weight that does not loosen the side cloth.

  As a result, the upper edge of the side cloth is urged to spread outward, and the total weight of this wire is light enough to not loosen the side cloth. The upper upper opening of the cloth filter is closed, so that it is not difficult to put coffee beans, or the side cloth does not loosen and the coffee beans do not spill out.

[2] The cloth filtration according to claim 1, wherein an extraction port is formed at any one or a plurality of locations of the insertion portion, and the wire can be inserted and withdrawn through the extraction port. Ingredients. Thereby, the damaged or outdated wire can be easily replaced, and the cloth portion and the wire can be easily separated during recycling.

[3] The upper edge of the side cloth is folded outward and stitched to the outside of the side cloth, and a part of the stitching is omitted to form a take-out port at one or a plurality of positions of the insertion portion. The cloth filter according to claim 1 or 2, wherein the take-out port is opened downward. Thereby, coffee bean powder and tea leaves do not enter from the outlet. In addition, since the takeout port is closed in a straight line by the outward urging force of the wire, coffee powder and tea leaves do not enter from the takeout port.

[4] One or a plurality of the wires are elastically deformed, and each end of each of the plurality of wires is arranged to be slightly shifted, and both ends of the wires overlap each other. The cloth filter according to claim 1, 2 or 3, wherein is displaced from the position of the take-out port. As a result, both ends of the wire will not damage the cloth inside the wire insertion portion 4, and the wire will not jump out of the takeout port. In addition, the elastic urging force of the wire does not cause both ends of the wire to sharpen the upper edge of the side cloth, and the insertion portion of the side cloth is not damaged or torn at this pointed portion. .

[5] The wire is one or a plurality of wires, and each end of each of the plurality of wires is arranged to be slightly shifted, and both ends of the wire are joined. The cloth filter according to 3 or 4. As a result, both ends of the wire will not damage the cloth inside the wire insertion portion 4, and the wire will not jump out of the takeout port. In addition, the elastic urging force of the wire does not cause both ends of the wire to sharpen the upper edge of the side cloth, and the insertion portion of the side cloth is not damaged or torn at this pointed portion. .

[6] The wire is made of metal, resin, or a wire in which a plurality of thin metal threads are brought together, or a wire in which both ends are heated and the thin metal threads are welded to each other. The cloth filter according to 2, 3, 4 or 5. Thereby, both ends of the wire are not frayed and the cloth inside the wire insertion part 4 is not damaged, and the wound wire is not injured.

[7] The cloth filter is made of a twill weave with double yarns having raised hairs, and the raised surfaces are formed only on one side of the cloth, and the raised surfaces are located on the bottom cloth and the inner side of the side cloth of the cloth filter tool. The cloth filter according to claim 1, 2, 3, 4, 5 or 6. Thereby, coffee bean powder and tea leaves come to be wrapped in cloth, and proper filtration becomes possible.

  In the present invention, by making the filter tool into a cloth, it is possible to prevent disposable and filter a beverage having a good taste. That is, a side cloth is sewn to the periphery of the circular bottom cloth, the upper edge of the side cloth is folded outward and stitched to form an insertion portion, and a wire is inserted into the insertion portion in an annular shape. And the weight of the wire does not loosen the side cloth, thereby preventing the side cloth from loosening. Therefore, the upper edge of the side cloth is loosened, the upper upper opening of the cloth filter is closed, and it is difficult to put coffee beans, or the side cloth is loosened and coffee beans spill out. Disappears.

The cloth filter 1 is shown. The wire 5 of the cloth filter 1 is shown. The expanded cross section of the wire 5 is shown. A partially enlarged cross section near the wire takeout port 7 is shown. The slack / wrinkle / falling of the side cloth 3 when there is no wire 5 is shown. It is a figure which shows the conventional filter cloth.

Explanation of symbols

1 ... cloth filter, 2 ... bottom cloth, 3 ... side cloth,
4 ... wire insertion part, 5 ... wire,
6 ... side edge over stitching portion, 7 ... wire outlet,
8: Upper edge folding part, 9 ... Upper edge edge overhang part,
10 ... upper edge, 11 ... upper surface opening,
12 ... bottom edge stitching part, 13 ... upper edge stitching line,
31 ... grip part, 32 ... ring part, 33 ... cloth part 33.

Claims (4)

It is made of a cloth that can filter coffee or tea, and is made of this cloth.
A side cloth that is joined to the peripheral edge of the bottom cloth without gaps and extends in a substantially tapered manner obliquely upward and slightly outward.The side cloths are joined together without any gaps, whereby the bottom cloth and the side cloths It is a bag with no gaps,
The bottom cloth has a diameter of several centimeters to several tens of centimeters,
The side cloth has a height of several centimeters to several tens of centimeters,
An insertion portion formed by folding the upper edge of the side cloth outward and stitching the upper edge to the outer surface of the side cloth;
The inside of the insertion portion is inserted in an annular shape, and is provided with a wire that urges the annular shape to spread outward, and prevents the side fabric from loosening with a weight that does not loosen the side fabric. Cloth filter. 2. The cloth filter according to claim 1, wherein a takeout port is formed at any one or a plurality of locations of the insertion portion, and the wire can be inserted and pulled out through the takeout port. The upper edge of the side cloth is folded outward and stitched to the outside of the side cloth, and a part of the stitching is omitted to form a take-out port at any one or a plurality of positions of the insertion portion. The cloth filter according to claim 1 or 2, wherein the take-out port opens downward. One or a plurality of the wires are elastically deformed, and each end of each of the plurality of wires is arranged so as to be slightly shifted. Both ends of the wires overlap each other, and this overlapping portion is The cloth filter according to claim 1, 2, or 3, wherein the cloth filter is deviated from the position of the mouth.

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