JP5154019B2 - Method for producing insect-proof futon cotton - Google Patents

Description

  The present invention relates to a method for producing an insect-proof futon cotton, and more specifically, by mixing a cotton sheet for a futon cotton that does not contain an insect repellent and a fiber sheet that contains a high concentration of an insect repellent in advance. The present invention relates to a method for producing sex futon cotton.

  The futons and cushions are warm beds for mites and fleas. Especially when the temperature and humidity conditions are satisfied, such as in summer, dust mites, mite mites, claw mites, etc. are generated. As the housing structure is sealed and heated, the proliferation of mites in winter has become a problem recently. The living body, dead body, and feces of house dust mites and coral mites are related as allergens such as asthma, rhinitis, and atopic dermatitis, and claw mites and fleas cause bites.

  As a countermeasure against this, Japanese Patent Application Laid-Open No. 9-294879 (Futon) discloses a futon in which at least 40% of an insecticidal fiber cotton is mixed in the padded cotton, and an insecticidal synthetic cotton containing a pyrethroid agent. And a blend of cotton and fiber cotton not containing the drug. However, a futon containing a pyrethroid-based drug is not preferable because it comes into contact with the mouth, and it is inefficient to directly apply an insect repellent to cotton except when the drug is kneaded in the synthetic cotton manufacturing process. In addition, there is a drawback that the spots of the insect repellent are increased.

On the other hand, the applicant of the present application has published an application of Japanese Patent Application Laid-Open No. 2005-34604 (insect repellent filling) as one of the countermeasures. This publication describes an insecticidal filling in which a fibrous material containing a diffusible borate is interposed in the center or both front and back sides of a filling such as a futon, a pillow, a cushion, a cushion, and a mattress. However, the diffusible borate contained in the fibrous material has a drawback that it takes a considerable amount of time to diffuse throughout the futon, which is a filling material, and the borate-containing fibrous material is used as the futon. There was no mention of blending into cotton.
Japanese Patent Laid-Open No. 62-127097 JP 2005-34604 A

  An object of the present invention is to provide a rational method for imparting an insect repellent function to a raw cotton for a futon that does not contain an insect repellent.

The inventor of the present invention has arrived at the present invention as a result of intensive studies to solve the above problems. That is, the present invention, when producing an insect-proof futon cotton, raw material cotton for futon cotton that does not contain an insect repellent, and a fibrous sheet that is colored in a specific color and contains 2 to 6 weight percent insect repellent It is a method for producing insect-repellent futon cotton, characterized in that it is simultaneously fed to a fiber spreader, opened and mixed, and then drawn by a card machine to form a thin fiber membrane, which is laminated to form a futon cotton.

  The futon referred to in the present invention includes a cushion, and the futon cotton raw cotton is used futon cotton or unused futon cotton raw cotton. Unused raw cotton for futon is usually packed in a veil and received, but this is used.

The fibrous sheet referred to in the present invention, a cellulosic material, an animal-based material or hygroscopic basis weight of synthetic fibers of 15 to 100 / ^{m 2} non-woven fabric such as wool, a basis weight of 15 to 100 / ^{m 2} which is a paper or tape. In particular, rayon nonwoven fabric or soft paper is preferable.

Further, the insect repellent used in the present invention is an insect repellent that is harmless to the human body, and borate is preferable, and in particular, disodium octaborate tetrahydrate [Na ₂ B ₈ O ₁₃ · 4H ₂ O] (hereinafter referred to as “inorganic repellent”) DOT) or a diffusible borate such as a boron compound produced by mixing boric acid and borax in an aqueous solution at a ratio of 1: 1 to 1: 2 is particularly preferable. This diffusible borate can be an aqueous solution having a high concentration of 10 weight percent at room temperature (20 ° C.) and 30 weight percent or more when heated. Moreover, it is excellent in diffusibility with respect to a hygroscopic fibrous material, and is difficult to be scattered as a powder even when dried. In particular, the moisture content of animal and plant fibers and foods rises to nearly 20% by weight during high humidity periods such as the rainy season, but diffusible borates, especially DOT, have the property of slowly diffusing in such tissues. There is.

  Content which makes the said fiber material contain a diffusible borate is 0.05-2.0 weight percent in conversion of boron with respect to the total weight of the futon cotton, More preferably, it is 0.1-1. It should be 0 weight percent.

As described above, according to the present invention, as described in the claims, when producing the insect-proof futon cotton, the insect-repellent agent 2 to 6 is colored with a specific color of the raw cotton for the duvet cotton not containing the insect-repellent agent. A fiber sheet containing a weight percent is simultaneously supplied to a fiber spreader, opened, mixed, and then formed into a thin fiber film by a card machine, and this is laminated, so that the fiber sheet is finely deconstructed Insect-proof futon cotton mixed and spread in raw cotton for futon cotton is obtained.

  Since the insect repellent is borate, it diffuses slowly from the finely dispersed fibers of the fiber sheet to the entire cotton padding at high humidity, and exhibits the effect of suppressing the growth of harmful micro-organisms such as mites and fleas. Since the borate used in the present invention is water-soluble but not sublimable, the effect lasts semipermanently unless washed with water.

Fibrous sheet, since it is the basis weight of rayon nonwoven or 15 to 100 / ^{m 2} basis weight of soft paper 15 to 100 / ^{m 2,} in the manufacturing process of the rayon nonwoven fabric or soft paper, or in another process Borate can be easily impregnated with a roller or the like immersed in an aqueous borate solution, and if the impregnated nonwoven fabric or paper and the raw cotton for the futon cotton are simultaneously supplied to the fiber spreader, the solution is finely dissolved. Thus, it can be dispersed and mixed almost uniformly in the raw cotton for the futon.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  FIG. 1 is a schematic partial side sectional view showing an example of an apparatus for carrying out the method for producing insect-proof futon cotton of the present invention, and FIG. 2 is an enlarged sectional view taken along the arrow F2-F2 in FIG. . As shown in FIG. 1, an apparatus for carrying out the method for producing an insect-proof futon cotton of the present invention is in the order of spreader 1, cotton feeder 2, card machine 3, winder 4, folding machine 5, and packaging machine 6. Has been placed. As shown in FIG. 2, the spreader 1 includes a plurality of rows of blades 9 around a drum 8 that rotates around a rotation shaft 7, and rotates at high speed in a drum case 10. .

  The input section of the spreader 1 is provided with a feed lattice 12 for transferring the material cotton 11 for the futon cotton onto the drum case 10 and transferring it, and a regulating roller 13 for controlling the supply amount. A sheet supply roll 14 is disposed in front of the feed lattice 12, and a fiber sheet 15 impregnated with borate at a high concentration is disposed on the feed lattice 12 as the feed lattice 12 moves. It can be fed along the upper surface of the cotton 11.

By driving the feed lattice 12, the raw cotton 11 for the futon cotton is sent to the spreader 1. At this time, the fiber sheet 15 is supplied together with the raw cotton 11 for the futon cotton, and the end portion thereof is supplied to the drum case 10 of the spreader 1 by a small amount at a constant speed via the regulating roller 13. Accordingly, the raw cotton 11 for the futon cotton fed into the drum case 10 of the fiber spreader 1 is divided by the blade 9 in a state where it is integrated with the fiber sheet 15 and held by the regulating roller 13. Fine, mixed. The blended cotton 17 that is a mixture that has been opened and mixed floats in the drum case 10, and the blended cotton 17 that is the suspended matter is sucked into the cotton transport pipe 16 and falls into the cotton feeder 2.

  The mixed cotton 17 that has fallen into the cotton feeder 2 is supplied in a fixed amount to the card machine 3, separated into individual fibers on the card machine, and aligned in the traveling direction to form a thin fiber film 18. The thin fiber film 18 on the card machine 3 is peeled off by the fly comb 19 and wound on the winder 4. The winder 4 is provided with a cutter 20 and is automatically cut when the thin fiber film 18 being wound reaches a set thickness. The laminate of fiber membranes cut by the winder 4 becomes the circumference of the winder 4 and is sent onto the table 5T of the folder 5. The fiber membrane laminate sent on the table 5T is folded in half in the horizontal direction, and then folded back in the center direction at the front end and the rear end as indicated by arrows A1 and A2 by the alternate long and short dash lines, for a total of six layers. The insect-proof futon cotton 21 is finished and sent to the packaging machine 6 for packaging.

  As the raw cotton 11 for futon cotton, unused raw cotton for futon or used futon cotton having no insect-proof function is used.

  In the case of using the above-mentioned raw cotton for blanket, unpacking and unpacking the unused blanket cotton 11 which has been bale-packed and received, spread almost uniformly on the feed lattice 12, A fiber sheet 15 impregnated with a high concentration of diffusible borate is stacked and fed into the drum case 10. After feeding into the drum case 10, the insect-proof futon cotton 21 is processed by the procedure described above.

  In addition, when a used futon cotton having no insect repellent function is re-strung to obtain an insect-proof futon cotton, the used futon cotton is placed on the feed lattice 12. When the width of the used futon cotton is wider than the width of the feed lattice 12, it is cut according to the width of the feed lattice 12 and then placed. Unused futon cotton is unwound and placed thereon if necessary, and a fibrous sheet 15 impregnated with a diffusible borate at a high concentration is further stacked thereon and fed into the drum case 10. After feeding into the drum case 10, the insect-proof futon cotton 21 is processed in the same manner as described above.

As the fibrous sheet 15, a nonwoven fabric, paper or tape made of an animal-based material such as cellulosic material or wool, hygroscopic synthetic fiber, or the like is used, but a rayon nonwoven fabric or soft paper is preferable, and particularly air permeability is good. A suitable rayon nonwoven fabric or soft and low tear strength paper is preferably used. Moreover, it is preferable that the basic weight shall be 15-100 g / m < ² > in any case of a nonwoven fabric and paper. By using a fibrous sheet made of such a material, the impregnating property of the insect repellent is improved, and the unwinding property, opening property, and mixing property in the opening machine are also improved.

  The borate impregnation amount of the fibrous sheet 15 is preferably 0.05 to 2.0 weight percent in terms of boron with respect to the total weight of the raw cotton 11 for the futon cotton and the fibrous sheet 15, More preferred is -1.0 weight percent. When the amount of borate is less than 0.05 percent in terms of boron, the mite growth inhibitory effect is insufficient, and when it is 2.0 weight percent or more, the mite growth inhibitory effect is saturated and diffusible borate. The amount of use increases and the cost increases. The specific borate impregnation amount of the fiber sheet 15 is preferably 2 to 6 weight percent. When the borate impregnation amount is less than 2% by weight, the amount of the fiber sheet 15 with respect to the raw cotton 11 for the futon cotton is increased, resulting in inefficiency. When the blade 9 is struck, a part of the borate drops and is not effectively used.

  As a method of impregnating the fibrous sheet 15 with borate, in the manufacturing process of the fibrous sheet 15 or in a separate process, a method of dipping and running in an aqueous borate solution, or a partly dipped roller is contacted and impregnated The method, the method of spraying continuously with a spray, etc. are employ | adopted.

  The fiber sheet 15 is preferably colored in a specific color by containing a pigment or a dye in order to show that insect-repellent performance can be realized. By coloring in this way, it can be easily identified that it is an insect-proof fiber sheet, and the dispersion state after blending can be easily confirmed visually.

[Example]
Prepare a rayon nonwoven fabric with good air permeability and a soft pink color with a small tear strength, with a basis weight of 60 g / m ² , a width of 1 m and a length of 2 m. Then, a 10 weight percent aqueous solution of DOT as borate is sprayed onto each sheet so as to be almost uniform by spraying 40 g per m ² and dried, and the DOT-impregnated rayon nonwoven fabric P1, for Example 1 is dried. Prepared as DOT impregnated paper P2 for Example 2. The boron equivalent concentration of DOT after drying was 3.3 weight percent for P1 and 3.2 weight percent for P2.

  As Example 1, 2 kg of unused cotton raw material cotton is unwound and arranged on a feed lattice 12 on a rectangle having a width of 1 m and a length of 2 m, and the DOT-impregnated rayon nonwoven fabric P1 prepared above is stacked thereon. Insect-proof futon cotton 21-1 was manufactured in the procedure described in the above embodiment after being fed into the drum case 10.

  Next, as Example 2, insect-proof futon cotton 21-2 was produced in the same procedure as described above using the DOT-impregnated paper P2 prepared above instead of the DOT-containing rayon nonwoven fabric P1.

Table 1 shows the results of examining the distribution of pink colored fibers for the insect-proof futon cotton 21-1 and the insect-proof futon cotton 21-2. It was confirmed that the pink colored fiber was distributed almost uniformly with a fiber length of 30 mm or less.

  In the embodiment described above, the fibrous sheet 15 is supplied along the upper surface of the raw cotton 11 for the futon cotton, but it can also be supplied from the lower surface side. Moreover, although the winding sheet was supplied using the sheet supply roll 14, one sheet can be supplied to one piece of futon in the case of futon retouching.

  The present invention is not limited to the above-described embodiment, and can be appropriately modified and implemented without departing from the gist of the present invention.

It is a fragmentary sectional side view which shows an example of the outline of the apparatus which enforces the manufacturing method of the insect-proof futon cotton of this invention. It is an expanded sectional view shown along F2-F2 arrow of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Opening machine 2 Cotton feeder 3 Card machine 4 Winding machine 5 Folding machine 6 Packing machine 7 Rotating shaft 8 Drum 9 Blade 10 Drum case 11 Raw material cotton for futon 12 Feed lattice 13 Regulating roller 14 Sheet supply roll 15 Fiber fly comb sheet 16 cotton transport tube 17 cotton mixing 18 fiber membranes 19 20 cutter 2 1 anti insect resistance futon cotton

Claims (4)

When manufacturing insect-proof futon cotton, raw material cotton for futon cotton that does not contain insect repellent and a fiber sheet that is colored in a specific color and contains 2 to 6 weight percent of insect repellent are simultaneously supplied to the fiber opening machine. A method for producing an insect-proof futon cotton, characterized in that it is spread, mixed, and then drawn by a card machine to form a thin fiber membrane, which is laminated into a duvet cotton. In the manufacturing method of the insect-proof futon cotton of Claim 1,
Method for producing anti-insect properties futon cotton you wherein repellent is a borate. In the manufacturing method of the insect-proof futon cotton of Claim 1,
The fibrous sheet, a manufacturing method of the anti-insect properties futon cotton you being a rayon nonwoven fabric having a basis weight of 15 to 100 / m ^2. In the manufacturing method of the insect-proof futon cotton of Claim 1,
The fibrous sheet, a manufacturing method of the anti-insect properties futon cotton you being a paper basis weight of 15 to 100 / m ^2.

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