JP2003089973A - Method of producing cleaning cloth and cleaning cloth - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method of production for cleaning cloth preventing unbalance resulting from sticking to a conveyer or flowing of stock solution, having strong bondability, porous and excellent in cleaning effect, capable of being decomposed into harmless substance by a bacteriological action when disposed after use and to provide the cleaning cloth. SOLUTION: This method comprises installing water tank 5 for foaming reaction in place of a conventional single side heating type high temperature foaming process, filling the tank with hot water heated to 90-110 deg.C, carrying out a foaming reaction by passing a material to be processed through the water to make both sides of the fibrous material to have a number of homogeneous air-permeable pores, producing semifinished porous cleaning cloth having strong bondability, cooling and removing acid by washing the catalyst in a washing, cooling and acid removing process 6, neutralizing and compressing to remove water remaining in pores in a washing and compressing process 7 and then drying by a drying process to obtain finished cleaning cloth having comparatively large pore size, stable and excellent in bondability.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clean cloth for tableware used in, for example, a kitchen and a method for manufacturing the same, and more particularly to a method for manufacturing a clean cloth and a clean cloth that decomposes into harmless substances by bacterial action when discarded after use. Regarding

[0002]

2. Description of the Prior Art Clean cloth for tableware that has been conventionally used in kitchens and restaurants is usually made of a chemical material and cannot be decomposed by bacterial action even if it cannot be used and is discarded and buried in the soil. It becomes a source of environmental pollution. Also, after cleaning with a clean cloth, you have to wipe the dishes with a dry cloth. The reason is that the clean cloth does not absorb water well, which is inconvenient to use. It also easily breaks or tears after a period of use and often has to be replaced with a new one. It is uneconomical because the structure is not tight.

A type of conventional relatively improved cleaning cloth is
Plant starch and polyvinyl alcohol (PVA, POLYVINYL ALCOHOL) mainly on the front and back of the fiber board
After coating the liquid raw material that mixed the first catalyst (formalin) and the second catalyst (hydrochloric acid), foam it in the thermal reaction furnace, then lower the temperature, wash and compress. It is further dried by heat.

FIG. 6 shows the foaming process of this conventional clean cloth, in which a dry foaming reaction is generated at a high temperature in a closed reaction furnace. That is, the fiber pieces coated with the liquid raw material are fed into the reaction furnace by a conveyor, and the heat source is fed in the single direction indicated by the arrow to advance the reaction.
This single-sided heating causes a sufficient reaction in the liquid raw material in the upper layer of the fibrous piece, but the reaction of the liquid raw material in the lower layer is insufficient, and the liquid raw material coated in the lower layer easily remains and sticks to the conveyor. This results in poor quality and the inconvenience of having to wash and clean the conveyor often.

Further, when the fibrous plate is fed into the reaction furnace and foamed, both sides of the fibrous piece are coated with the liquid raw material, so that the liquid raw material is apt to flow and become non-uniform, The thickness of the liquid raw material is not uniform. In addition, since the foaming process is performed at a high temperature of 350 ° C. or higher, the structure of the fibrous plate may be destroyed during the reaction process, or the fibrous plate may be bent and deteriorate in quality.

[0006]

DISCLOSURE OF THE INVENTION The present invention is to change the dry single-sided heating type foaming process in the conventional clean cloth manufacturing process to a water-type foaming after double-sided heating and drying. Conventionally, the liquid raw material is prevented from sticking to the conveyor or flowing and becoming non-average, and the fibrous plate in which the liquid raw material on both sides of the liquid raw material is almost cured is fed into the water reaction tank, Using the buoyancy of water, the first catalyst (formalin) and the second catalyst (hydrochloric acid) react to perform water-based foaming, and the temperature and time are adjusted for strong bonding, multi-porosity, and strong cleanliness. (EN) Provided are a method for producing a clean cloth and a clean cloth which can be decomposed into harmless substances by bacterial action even if they are no longer usable and are discarded.

[0007]

[Means for Solving the Problems] In the first step of the raw material preparation work, PVA (POLYVINYL ALCOHOL) (polyvinyl alcohol) is mixed with water and then heated and stirred at the same time to form a granular liquid, and then the temperature is lowered. The first raw material, the second raw material in which the vegetable starch was mixed with water and heated and simultaneously stirred to form a paste, the third raw material of the first catalyst, the fourth raw material of the second catalyst, the fifth raw material of the fibrous plate. Prepare the raw materials, and in the second step of the raw material stirring and mixing work, add the fourth raw material to the second raw material and stir sufficiently, mix the second mixed raw material and the first raw material, and add the third raw material. Stir well to make a saturated mixed material,
In the third step of the coating operation, the saturated mixed raw material is applied to both upper and lower surfaces of the fibrous plate of the fifth raw material, and in the fourth step of the heat-drying standard operation, the saturated mixed raw material is applied. The raw material is heated to substantially cure the liquid saturated mixed raw material,
In the fifth step of the water-type foaming reaction work, the fifth raw material applied with the cured saturated mixed raw material is passed through heated water to generate a mutual bridge action in the saturated mixed raw material. , So that it can be sufficiently linked to remove water to form a semi-finished clean cloth with a strong bonding property.In the sixth step of the washing deoxidizing and cooling operation, the temperature of the semi-clean cloth is cooled. , The first catalyst of the third raw material and the second catalyst of the fourth raw material are removed by washing to deoxidize, and in the seventh step of the washing compression operation, the semi-finished product clean cloth is washed to neutralize and Compress and remove the water remaining in the pores in it, re-drying work as the final eighth process,
The clean cloth is dried again to provide a completed clean cloth having a large number of slightly large pores, stability and good bonding, and a manufacturing method thereof. The clean cloth of the present invention is formed by forming a well-foamed wiping part on both surfaces of the clean cloth by the water-type foaming reaction work and has a large number of air permeability so that the quality is foamed by the conventional single surface heating. It is more elevated.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION The method for producing a clean cloth which can be decomposed into harmless substances by the bacterial action of the present invention and the clean cloth have the raw materials and the weight ratios shown in Table 1, and the respective manufacturing steps shown in the block of FIG. , The actual manufacturing process flow chart shown in FIG. As shown in FIGS. 1 and 2, the manufacturing process includes eight processes.

[0009]

[Table 1]

In the first step 1, the required raw materials are prepared by first mixing 45% to 66% by weight of liquid non-granular polyvinyl alcohol (PVA; POLYVINYL ALCOHOL) with water, heating and stirring at the same time to granulate. Of raw material A (BF-17, the ratio of which is 1: 5)
The above) and a vegetable starch having a weight ratio of 26% to 50% are mixed with water, heated, and simultaneously stirred to form a paste, and then the temperature is lowered to a cold pasty raw material B (ratio with water is 1: 5. that's all)
And a weight ratio of 3.6% to 10% of the first catalyst (for example, concentration 3
7% formalin), 4.5% to 10% by weight of the second catalyst (for example, 32% concentration of hydrochloric acid), and a fibrous plate are prepared.

The second step 2 is a stirring and mixing step, in which a second catalyst (hydrochloric acid) is added to the pasty raw material B and mixed and stirred to obtain a mixed raw material C, and then the raw material A and the raw material C are mixed. D, the first catalyst (formalin) is added to the raw material D and sufficiently mixed by stirring to make a saturated mixed raw material, and finally, an appropriate amount of activated carbon is added as a raw material E by selection or as needed, and this raw material D is stirred and mixed. The process ends.

The third step 3 is a coating operation in which the above-mentioned raw material E is uniformly coated on both the upper and lower surfaces of the long fibrous plate which is continuously transported and moved. The thickness of the fibrous plate is determined as necessary. The fourth step 4 is to perform a routine operation by heat drying, prepare a heating device capable of adjusting the temperature, and select the heating method by infrared ray, microwave or heater as necessary, and then apply the above-mentioned raw material E. The fibrous plate having the hardened saturated mixed raw material or raw material E is made to pass through the heating device to be shaped to prevent the coated saturated mixed raw material or raw material E from flowing clearly. It prevents the saturated mixed raw material or raw material E from being dissolved or flowed in water when it is fed into the reaction water tank of the fifth step. It should be noted that the saturated mixed raw material or the raw material E will never remain on the conveyer or stick to the conveyer to avoid inconvenience and difficulty in cleaning the conveyer.
Furthermore, since the heating device applies heat to the upper and lower sides of the fibrous plate, there is no uneven burning and no burning or bending.

The fifth step 5 ends the fourth step, and the hardened fibrous plate of the raw material E is fed into the reaction water tank and undergoes the foaming reaction work therein. This reaction is mainly carried out at a temperature of 90
The reaction is carried out in water of ℃ ~ 110 ℃, and inside the reaction water tank, an appropriate amount of water and a mixed solution of the first catalyst (formalin) and the second catalyst (hydrochloric acid) in a weight ratio of 8% to 12% are mixed. is doing. Since this water has a buoyancy effect, it is clear that the raw material E applied and cured on both upper and lower surfaces of the fibrous plate is not affected by gravity, so the raw material E is completely attached to both sides of the fibrous plate. Moreover, its thickness is also uniform. Further, a plurality of guide wheels 50 are equidistantly arranged on a horizontal plane in the reaction water tank, and the fibrous plate is pressed to guide its movement so as not to float above the water due to buoyancy. A plurality of (preferably 4 to 5) pressing needles 50 are provided around the same 50 at equal distances.
At 01, press the fibrous plate so that it does not float above the water
Does not stick to the guide wheel and maintains its quality. In addition, the length of the reaction water tank and the moving speed of the workpiece (that is, the fibrous plate) are adjusted as necessary. The water-type foaming reaction mainly causes a bridge action when the raw material A and the raw material C are mixed due to the factors of temperature and time, and thus has sufficient linking and water scavenging property to have a strong bonding property and a large number of pores. Moisture is made to have, and the water to be discharged is held in those pores for a while, and then compressed and removed in the subsequent seventh step.

The sixth step 6 includes a washing, deoxidizing and cooling operation of the workpiece which has finished the fifth step. First, the workpiece is passed through a constant temperature water tank to reduce its temperature, and then the first catalyst and the second catalyst are added. The two catalysts are removed and deoxidized to give the effect of a clean cloth. The seventh step 7 is a washing compressed water removal operation, in which the work piece is first washed surely and then neutralized, and then the water present in the pores is completely removed by compression so that the work piece is removed from the pores. The clean cloth of the present invention can absorb a large amount of water by utilizing the water absorption property of its own raw material.

In the next eighth step, a drying operation is performed, and when the clean cloth of the processed article which has finished the seventh step is further completely dried,
The manufacturing process of the clean cloth of the present invention is completed, and by the bacterial action,
The product is a clean cloth that can be decomposed into harmless substances. In addition to the above-described eight kinds of manufacturing processes of the present invention, the squeeze device 30 shown in FIG. 2 can be additionally provided between the third process and the fourth process, if necessary. The squeeze device 30 has the purpose of uniformly adhering the irregularly-shaped raw material after the raw material E is applied to the upper and lower surfaces of the natural fiber board, and has the effect of the elementary molding.

Further, in order to enable the cleaning cloth of the present invention to wipe the skin of the human body, the washing and compressing work of the seventh step is increased to make both surfaces thereof thinner and flatter. In addition to that, a polishing device may be added to the drying process in the eighth step to smoothly polish both surfaces, and as a result, a finer, flatter and softer feeling as shown in FIG. It is also possible to add a function of wiping the body by attaching a wiping part to both upper and lower surfaces of the fibrous plate.

FIG. 5 shows another embodiment for carrying out the water-type foaming reaction work in the fifth step, in which a plurality of pairs of circular clippers 51 are installed on the inner wall of the reaction water tank to press the workpiece and move it. To prevent the fibrous plate from floating upward when subjected to the buoyancy of water, and at the same time to prevent the raw material E from remaining and adhering to maintain the quality of the product.

The reason why the activated carbon having an external weight ratio of 3% to 180% is mixed into the raw material only after the stirring and mixing operation of the second step is that the activated carbon has a strong adhesive property and efficacy. When the raw materials are added together and mixed at the time of stirring and mixing, the activated carbon always surrounds the pasty starch raw material during the mixing process, so the activated carbon is surrounded inside during the washing and compression work in the seventh process, and the pores are It becomes impossible to contact the outside air,
As if activated carbon were to be sealed off, the filterability and deodorizing effect required for clean cloths would be lost. Therefore, the present invention improves the conventional erroneous manufacturing process, the conventional method of spraying activated carbon on the outer surface can not be strongly attached to a clean cloth, and it will fall off if washed with water or touched with fingers, but activated carbon inside It eliminates the drawback of being lost in filterability and deodorizing property when it is sealed in. It is also possible to add a foaming agent in a weight ratio of 0.015% to 0.06%, in which case the produced clean cloth has a relatively loosely swelled tissue and slightly large pores, and has a large number of honeycombs. Not.

[0019]

The present invention has the following effects. 1. The clean cloth according to the present invention can be decomposed into harmless substances by the bacterial action when it is thrown away after use, and therefore it does not become a source of pollution to the environment. 2. If the clean cloth according to the present invention further contains activated carbon,
It can also be used as an insole, gas mask or filter. 3. The clean cloth according to the present invention has very good water absorption, has a strong cleansing power, and is easy to wash and dry. 4. In the process of manufacturing the clean cloth according to the present invention, there is a water-type foaming process, and the process does not cause the raw material to remain on the conveyor or stick to it. Can be reduced. 5. The clean cloth according to the present invention has a flat and finely flattened surface by a flat compression work or a polishing work so that it feels good to touch and can be used for wiping a human body or a face. Its versatility is wide and its value is enhanced.

[Brief description of drawings]

FIG. 1 is a block diagram showing a process of manufacturing a clean cloth according to the present invention.

FIG. 2 is a schematic view showing a flow work in a manufacturing process of the clean cloth in the present invention.

FIG. 3 is a side cross-sectional view showing an irregular surface of a clean cloth product in the present invention.

FIG. 4 is a side sectional view showing a fine surface of a clean cloth product according to the present invention.

FIG. 5 is a perspective view of another embodiment of the water-based foaming reaction in the process of manufacturing the clean cloth according to the present invention.

FIG. 6 is a side view showing a state in which foaming occurs during the manufacturing process of the conventional clean cloth.

[Explanation of symbols]

1 Raw material preparation process 2 Raw material stirring and mixing process 3 Raw material coating process 4 Heat drying standard process 5 Water-type foaming reaction process 6 Cleaning deoxidation cooling process 7 Washing compression process 8 Re-drying process 30 Squeeze device 50 guide wheel 51 scissors 501 holding needle

   ─────────────────────────────────────────────────── ─── Continued front page    F term (reference) 3B154 AB18 BA19 BA60 BB39 BE03                       DA21                 4L033 AC15 CA06 CA29 DA01

Claims (12)

[Claims] 1. The raw material preparation work is the first step, and the polyvinyl alcohol is mixed with water and then heated and stirred at the same time to form a liquid without particles, and the temperature is lowered to prepare the first raw material. The starch is mixed with water, heated, and simultaneously stirred to form a paste, which is prepared as the second raw material, the first catalyst is prepared as the third raw material, the second catalyst is prepared as the fourth raw material, and the fibrous plate is prepared as the fifth raw material. Prepared as a raw material, the raw material stirring and mixing work is the second step, the second raw material and the third raw material are mixed and sufficiently stirred to make a second mixed raw material, and the second mixed raw material and the first raw material are mixed. Mixing and mixing the fourth raw material and stirring sufficiently to make a saturated mixed raw material, the coating operation is the third step, the saturated mixed raw material is uniformly applied to both the upper and lower surfaces of the fibrous plate of the fifth raw material, Applying the saturated mixed raw material with the heat drying routine as the fourth step The fifth saturated raw material is heated to almost cure the liquid saturated mixed raw material, the water-type foaming reaction work is defined as the fifth step, and the cured saturated mixed raw material that has finished the fourth step is applied. The fifth raw material is passed through heated water to cause mutual saturation of the saturated mixed raw materials, sufficiently linked to remove water, and formed into a porous semi-finished clean cloth with strong binding properties. Then, the washing and deoxidizing cooling work is the sixth step, the semi-finished product clean cloth after the fifth step is cooled, and the first catalyst of the third raw material and the second catalyst of the fourth raw material are removed by washing. Then, the washing and compressing work is made into the 7th step, and the semi-finished clean cloth after the 6th step is washed, neutralized and compressed to remove the water remaining in the pores inside. And the re-drying work as the final eighth process, After resuming the clean cloth that has completed the seventh step, to complete a clean cloth having a large number of rather large pores and having stability and excellent binding properties, providing a heat source for heating both surfaces of the fibrous plate, A reaction water tank is used in the water-type foaming reaction operation of the fifth step, and water in which the first catalyst and the second catalyst are dissolved is put into the reaction water tank and heated, and the water heated in the reaction water tank is used. The saturated mixed raw material is applied and passed through the fibrous plate cured to generate a foaming reaction, the temperature of water in the reaction water tank, the length of the reaction water tank, and the traveling speed of the fibrous plate. Is a method for manufacturing a clean cloth, which is adjustable. 2. The method for producing a clean cloth according to claim 1, wherein the water used in the water-type foaming reaction operation in the fifth step is heated to 90 ° C. to 110 ° C. 3. The clean cloth according to claim 1, wherein 0.3% to 180% of the total weight of activated carbon is added to the water used for the water foaming reaction operation in the fifth step. Manufacturing method. 4. The foaming agent of 0.015% to 0.06% in total weight is added to the water used for the water-type foaming reaction operation in the fifth step. Method for manufacturing clean cloth in. 5. The plurality of guide wheels for guiding the movement of the fibrous plate are installed in the reaction water tank used in the water foaming reaction operation of the fifth step. A method for manufacturing the described clean cloth. 6. The method for producing a clean cloth according to claim 5, wherein the guide wheel installed in the reaction water tank has a plurality of hanging needles around the guide wheel. 7. The method for producing a clean cloth according to claim 1, wherein a plurality of clippers for sandwiching the fibrous plate are provided in the reaction water tank. 8. The method of manufacturing a clean cloth according to claim 1, wherein the second catalyst is hydrochloric acid. 9. The method for producing a clean cloth according to claim 1, wherein the first catalyst is formalin. 10. The method for producing a clean cloth according to claim 1, wherein a pair of compression rollers is additionally provided between the coating operation in the third step and the heat-drying standard operation in the fourth step. 11. A fibrous plate, and a wiping part applied and dried on both upper and lower surfaces of the fibrous plate, wherein the wiping part is made of liquid non-granular polyvinyl alcohol having a weight ratio of 45% to 66%. A gelatinous vegetable starch with a weight ratio of 26% to 50%, and a first catalyst formalin with a weight ratio of 3.6% to 10.0%,
4.5% to 10% by weight of the second catalytic hydrochloric acid, and the total weight ratio of the polyvinyl alcohol, the pasty vegetable starch, the first catalytic formalin and the second catalytic hydrochloric acid of 0.0.
It is produced by mixing with 15% to 0.06% of a foaming agent, and a large number of air-permeable pores are formed inside the wiping part, and the raw material of the wiping part is even on both upper and lower surfaces of the fibrous plate. A clean cloth characterized in that, after being applied to and dried on, it is washed and compressed by a washing and compressing device to completely remove the contained water, and a flat and thin surface giving a soft feeling to the touch is formed. 12. The clean cloth according to claim 11, wherein both upper and lower surfaces are polished by a polishing machine after molding, and the upper and lower surfaces are finely and smoothly formed.