JPH0721114U - Sake Moromi filter cloth for filtration - Google Patents

Abstract

(57) [Summary] [Purpose] To improve the peelability of cakes in a filter cloth (3) used for pressing various kinds of sake mash. [Structure] Warp (1) made of polyester multifilament and weft (2) using bulky yarn of polyester multifilament as a main component of yarn formation.
After weaving and to form an intermediate product of the filter cloth (3), the filter cloth (3) is subjected to hydrophilic treatment to make the multifilament itself hydrophilic,
A filtrate holding space is formed between the surface layer (S) and the back surface layer (R) of the filter cloth (3).

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a liquor moromi filter cloth for filtration, and more particularly to a liquor moromi filter cloth having good cake peeling properties by reducing the residue / adhesion of moromi solids.

[0002]

[Prior art]

 As a filter cloth for filtering sake mash, a multifilament of polyester is used as warp and weft, woven into a fine weave. This is because when the filter cloth is used throughout the year's brewing season and then washed and recycled in preparation for the sake brewing season of the next year, the cloth shrinks less, has excellent dimensional stability and is extremely easy to handle. This is because. In addition, the polyester multifilament used as the material for forming the filter cloth is formed into a yarn for fabric by converging a number of continuous filaments of fine denier like silk thread, It is also the reason why it is used because it has less feathers on the surface, less residue and adherence of sake mash solids on the surface of the filter cloth, good peeling of the cake, and easy cleaning and regeneration. The applicant of the present invention also paid attention to this point, and for example, in Japanese Utility Model Publication No. 58-14972, the use of multifilament of polyester fiber and bulky yarn as a material for forming a filter cloth, and this filter were used. It is proposed that the surface layer side of the cloth be calendered to smooth it. The filter cloth according to the above-mentioned prior invention is woven in a weft double woven structure, exposes a large amount of multifilament which is a constituent component of the warp on the surface side smoothed by calendering, and also on the back side. By exposing a lot of bulky yarn, when the filter cloth is used for filtering sake mash, the filtering liquid is retained between the front surface layer and the back surface layer. At the same time when the filter press is released and pressed, a portion of the filtrate that is retained between the front and back layers flows back to the cake side due to the vacuum action, and the filter cloth is smoothed by interposing the filtrate on the surface. The binding force acting between the constituent fibers on the surface layer side of the formed filter cloth and the cake is weakened, whereby the peelability of the cake is improved to a predetermined level.

[0003]

[Problems to be solved by the device]

 By the way, with the recent improvement of brewing technology and diversification of liquor products, the tendency of high-mix, small-lot production has become stronger, and the starch content, constituents, and component ratios in sake lees are slightly different for each varieties of liquor products. Is changing. In view of this situation, it has become necessary to filter and squeeze different types of sake mash with the same filter press. In this case, even if the filter cloth used for the filter press proposed in Japanese Utility Model Publication No. 58-14972 is used as the filter cloth, depending on the kind of sake mash, An obstacle has come to be recognized that the peeling of the cake is not always easy. There are various possible reasons for this, but the most important factor is that polyester fiber, which is the material for forming the filter cloth, is originally a hydrophobic fiber, and even when weaving into a double weave structure, the surface layer and the back surface of the filter cloth are The reason is that a sufficient size of the filtrate holding space is not always formed between the layers. More specifically, since sake moromi contains a large amount of highly hydrophilic alcohol and is highly sticky, if it is squeezed out for a long time after pressure filtration and deliquoring, it will come into pressure contact with the surface of the filter cloth. On the surface of the cake, the amount of the remaining liquid / adhesion that weakens the binding force between the two is reduced, and the binding / adhesion between the filter cloth and the cake is strengthened. As a result, if the backflow rate of the filtrate from the inside of the filter cloth to the surface layer is not sufficient, it becomes difficult to separate the cake from the surface of the filter cloth due to defective inclusion of the filtrate. When squeezing sake moromi with a filter press for liquor moromi that has one to one hundred and several dozen chambers, use a spatula manually if the cake peelability is not maintained at a level that is practically satisfactory. It becomes necessary to separate the cake, that is, the lees from the surface of the filter cloth, resulting in a large amount of labor and time, which hinders the promotion of productivity and labor saving.

Against this background, there is a strong demand to provide a filter cloth for liquor mash filtration that is excellent in cake releasability and can be used for diversification of liquor products and small-lot production.

[0005]

[Means for Solving the Problems]

 As a means for solving the above problems, the present invention provides a woven fabric obtained by weaving warp yarns made of polyester multifilaments and weft yarns in which bulky yarns of polyester multifilaments occupy most of the surface of twisted yarns. A filter cloth for liquor mash filter, which is characterized in that it is subjected to hydrophilic treatment to form a retaining space for the filtrate between the surface layer and the back layer of the woven fabric.

[0006]

[Action]

 After weaving a filter cloth for sake moromi filtration consisting of polyester multifilament and its bulky yarn, it is led to the hydrophilic treatment step through the bulky expression step and the water removal step.

By subjecting the polyester fiber, which is a constituent material of the filter cloth, to hydrophilic treatment, the water-retaining ability of the bulky processed yarn, which is a constituent component of the weft, is improved, and at the same time, the polyester forming the warp and the weft is formed. By imparting hydrophilicity to the fiber, the cake peeling performance of the filter cloth is improved.

[0008]

【Example】

 Hereinafter, a specific example of the present invention and a comparative example according to the related art will be described with reference to FIGS.

In a first embodiment of the present invention, a polyester multifilament (250D / 48 filament) five-ply twisted yarn (right twist 5 times / 25.4 mm) is used as the warp (1), and , The core yarn (2A) consisting of aligned yarns of thin polyester monofilament (22mmφ × 3) as the weft yarn (2) and the bulky yarn (150D / 48 filament) of polyester multifilament as the cover yarn (2B) The sheath core yarn is used.

In the filter cloth (3) in the first specific example, as shown in FIG. 1, a large amount of warp yarns (1) are exposed on the surface layer side (S) and a large amount of weft yarns (2) are formed on the back layer side (R). It is woven in an exposed weave structure.

As such a weave design, in addition to the 3/2 layered satin weave shown in FIG. 1, plain weave, 2/2 twill weave, 2/2 twill weave, 3/1 twill weave, 3/1 twill weave Bunori, 3/2 twill, etc. can be mentioned.

In the filter cloth disclosed in Japanese Utility Model Publication No. 58-14972, the surface layer is completely covered with multifilament yarn [warp (1) in the present invention]. In the filter cloth (3) according to (3), it is not always necessary to cover the entire surface layer surface (S) with the polyester multifilament yarn (1), and a part of the weft yarn (2) together with the warp yarn (1) is used. It can be exposed on the surface side (S) of 3). This enhances the liquid-wetting action on the surface of the filtered cake, that is, the surface of the sake lees, and improves the peelability of the cake.

The filter cloth (3) according to the present invention is obtained by weaving the weaving cloth in hot water after weaving, or by passing it through a scouring bath filled with hot water. The action is permeated, and the bulkiness of the weft (2) is expressed. After that, the filter cloth (3) is guided to a squeeze roller (not shown) to remove water, and in this state, the filter cloth (3) is immersed in a solution of a hydrophilizing agent having a strong binding force to the polyester fiber, A hydrophilic treatment is applied to the cloth (3). After that, the amount of the pick-up liquid for the hydrophilizing agent is adjusted according to a conventional method, and then various steps of drying curing, re-scouring and drying are performed to finish the above filter cloth (3) into a final product. To be

As the hydrophilic treatment agent, an agent in which a polyethylene glycol unit is modified with a polyester affinity unit, for example, an agent which exhibits hydrophilicity by firmly binding to polyester, such as polyethylene glycol / carbamate, is used. More specifically, the polyethylene glycol portion exerts a hydrophilic function, and the carbamic acid portion strongly bonds to the polyester fiber in a hydrophobic bond.

By performing the hydrophilic treatment, the warp (1) made of polyester multifilament, which is a constituent material of the filter cloth (3), and the weft (made of polyester monofilament (2A) and polyester multifilament (2B) ( As a result of the hydrophilic property being imparted to 2), the entire filter cloth (3) is highly hydrophilic and the water absorbency of the bulky processed yarn (2B) is also greatly improved. Therefore, the surface layer (S) of the filter cloth (3) is improved. ) Improves the peelability of the cake, and also increases the amount of the filtrate retained between the surface layer (S) and the back surface layer (R).

On the other hand, FIG. 2 shows that a filter cloth (3) having a double weave structure composed of warp yarns (11) (12) and weft yarns (21) (22) having the same grade as the first specific example is subjected to hydrophilic treatment. An example of the second component applied is shown. The front fabric (S ') is composed of warp yarns (11) and weft yarns (21), and the back fabric (R') is formed of warp yarns (12) and weft yarns (22). Unlike the first specific example, polyester multifilaments are used not only in the warp yarns (11) and (12) but also in the weft yarns (21) and (22).

FIG. 3 shows a weaving weave and processing conditions for the first and second specific examples and two comparative examples corresponding thereto. The filter cloth shown in FIG. 3 is not calendered in both Examples 1 and 2, but for the purpose of improving the cake releasability by smoothing the surface layer (S), the type of sake mash and the filter It is also possible to carry out calendar processing according to the over-characteristics.

The woven design shown in FIG. 3 is 3/2 quick twill, which is another name for 3/2 layered satin weave. It is a square-shaped design paper in which the angle between the oblique line and the weft is greater than 45 °. Say.

In the first embodiment of the present invention, a sheath core yarn in which a polyester monofilament twisted yarn (2A) is used as a weft yarn (2) as a core yarn and a polyester bulky yarn (2B) is wound around the core yarn This is used because this is because the filter cloth (3) is not wrinkled during the process of use. If a finer woven structure is selected, the core yarn may be formed from multifilaments. It is possible. Further, the weft yarn (2) can be formed only by the polyester multifilament as shown in the second specific example.

On the other hand, the polyester multifilament used as the warp yarns (1), (11) and (12) has a better water retention as the denier becomes finer, the surface becomes smoother and the wettability by the filter becomes better.

[0021]

[Effect of device]

Jia having different characteristics, Otsu, prepares hei three wine mash, from 0〓F / ¬ ² up 7〓F / 〓 ^2, over 13 hours while stepwise increasing the filtered-squeeze pressure Sake moromi was squeezed, then the filter press was opened and the cake was taken out. FIG. 4 shows the measurement results of the peelability of the cake and the residual amount on the surface of the filter cloth.

As can be understood from the results of comparison with the conventional example, the filter cloth (3) according to the present invention imparts hydrophilicity to the entire fabric by the combination of the selection of the woven structure and the hydrophilic processing, The water-holding capacity of the bulky yarn of polyester, which is the forming material of (2), is also greatly improved. For this reason, the surface of the filter cake formed on the surface side of the filter cloth (3) has a polyester multifilament layer occupying most of the surface layer surface (S) of the filter cloth (3) at the same time as the end of pressing, and The weft yarn (2) slightly exposed on the surface side is kept wet by the filtrate transferred. As a result, the binding force between the cake and the surface of the filter cloth (3) is weakened, and even if the characteristics and types of sake mash are different, extremely good cake peeling properties are ensured.

[Brief description of drawings]

FIG. 1A is a bird's-eye view of a filter cloth showing a first embodiment of the present invention, and FIG. 1B is a longitudinal sectional view as seen from a direction parallel to the warp yarn (1) of the above-mentioned (A).

FIG. 2A is a longitudinal sectional view taken along a weft of a filter cloth showing a second embodiment of the present invention, and FIG. 2B is a longitudinal sectional view taken along a warp of the above-mentioned (A).

FIG. 3 is a list showing the woven structure and the presence or absence of hydrophilic treatment.

FIG. 4 is a characteristic table for explaining the effects of the present invention.

[Explanation of symbols]

 1 warp 2 weft 3 filter cloth 11 warp 12 warp 21 weft 22 weft S surface layer of filter cloth R back surface layer of filter cloth S'front surface layer of filter cloth (front fabric) back surface layer of R'filter cloth (back fabric)

Claims (3)

[Scope of utility model registration request] 1. Woven yarns made of polyester multifilaments and weft yarns in which bulky yarns of polyester multifilaments occupy most of the surface of the twisted yarns are woven, and the obtained woven fabric is subjected to hydrophilic treatment, A filter cloth for sake mash filtering, characterized in that a retaining space for the filtrate is formed between the surface layer and the back layer of the woven fabric. 2. A woven fabric having a high filtrate permeability, wherein a large amount of warp yarns are exposed on the surface layer side of the woven fabric and a large amount of weft yarns are exposed on the back surface layer side of the woven fabric. The filter cloth for liquor moromi filtration according to claim 1. 3. A sheath core yarn in which the weft yarn is formed by coating a polyester monofilament core yarn with a polyester multifilament bulky yarn in a spiral shape. The filter cloth for sake moromi filtration described in 1.