JP5598881B1 - Wiper package - Google Patents

Abstract

Provided are a highly productive wiper and a wiper package when a colored wiper is folded using a folding machine having a rotary cylinder type inter-holder.
A wiper formed from a non-woven fabric, wherein the wiper is colored and has a basis weight of 35 g / m ² or more and 65 g / m ² or less, and a 45 ° cantilever of 5.0 cm or more and 11.5 cm or less. The wipers and wipers having the bending resistance in the MD direction conforming to the law are alternately stacked, folded in a pop-up manner, stacked, and stored in a storage box having an outlet on the upper surface. Solved.
[Selection] Figure 1

Description

The present invention relates to a wiper package.

  In various places such as medical sites, laboratories, precision parts factories, and food processing plants, wipers with excellent dust generation and liquid absorption are used for wiping off equipment and equipment and cleaning the site. A variety of wiper base materials are used, but because of excellent texture and wiping properties, paper sheets formed from natural fibers such as pulp fibers, natural fibers such as pulp fibers, polypropylene, etc. A nonwoven fabric sheet formed from a blend of synthetic fibers is heavily used.

  As a product form of a commercially available wiper manufactured from these sheets, the sheets are usually folded several times and stacked, stored in a storage box having an extraction part on the upper surface, and when one piece is taken out from the extraction part at the time of use, There is a so-called pop-up type in which a part of the next sheet is exposed outside the take-out part, a four-fold type in which the sheet is folded in four and wrapped in a bundle, a roll type in which the sheet is wound into a roll, etc. (See Patent Documents 1 to 3). Various rotary cylinder and multi-stand type inter-holders are known as processing equipment for manufacturing pop-up type products. In particular, folding devices called rotary cylinder-type inter-holders are cut out from two raw rolls. The sheets can be laminated while being alternately folded, and a wiper laminate can be formed by cutting at predetermined intervals in the width direction. A pop-up type can be manufactured by storing this wiper laminate in a storage box having an outlet at the top, and is generally widely known as an existing technique.

  Although this rotary cylinder type inter-holder is slower in processing speed than the multi-stand type inter-holder, it is relatively small and easy to switch between the raw rolls, and the sheet folding quality is good. Various base materials such as paper and non-woven fabric can be processed, and are used for manufacturing pop-up type small lots.

  Here, as an example of an inter holder, a method for manufacturing a wiper laminate and a wiper package using a rotary cylinder inter holder will be described.

  FIGS. 2A and 2B are explanatory views of the folding machine 100 including a rotary cylinder type inter-holder. The folding machine 100 includes an original roll R and L, a felt roll 31 for knurling and embossing the original web 5 fed from the original roll R and L, a feed roll 32 for passing the sheet 7, And a folding unit 60 that stacks the sheets 7 while being folded.

  The folding unit 60 includes a pair of folding rolls 61 arranged opposite to each other, a knife receiver 62 for cutting the sheet 7 at regular intervals in the traveling direction above the folding roll 61, and a pair of left and right folding bars. 61e, and a laminate take-out device 91 that takes out the wiper laminate 9 that is folded and laminated while falling below the folding roll 61.

  FIG. 2B is a diagram showing a state in which the folding roll 61 is rotated 120 degrees in the direction of the arrow from the state shown in FIG.

  As shown in FIGS. 2A and 2B, the folding roll 61 has a vacuum zone 61a at a position equally divided into three in the circumferential direction so that the sheet 7 can be sucked and held. Further, a groove 61c is formed at a position equally divided into three along the circumferential direction of the folding roll 61. A claw-like jaw 61b for gripping a folded portion of the sheet 7 is disposed in the groove 61c, and a position facing the jaw 61b. A knife 61d is disposed on the surface. The jaw 61b rotates in the circumferential direction within the groove 61c, and when the jaw 61b comes into contact with the side wall of the groove 61c, the folded portions of the product sheets 7a and 7b are sandwiched between the jaw 61b. Further, a pair of left and right folding bars 61e for peeling the laminated body folded by the jaws 61b from each folding roll 61 is disposed below each folding roll 61.

  The sheet 7 introduced into the folding unit 60 is cut at regular intervals in the sheet traveling direction by contact between the knife 61d and the knife receiver 62, and is then sucked and held between the left and right folding rolls 61 while being held in the vacuum zone 61a. Move to. For example, when the product sheet 7b held by the jaw 61b of the left folding roll 61 faces the knife 61d of the right folding roll 61, the end of the product sheet 7a held by the right folding roll 61; The folded part of the product sheet 7b is held at the same time. Further, when each folding roll 61 rotates and reaches the folding bar 61e, the folding bar 61e is moved up and down to enter the groove 61c to release the jaw 61b, and the product sheet 7a, 7b is pushed down and folded. The wiper laminates 9 thus formed are sequentially formed. When the number of folded wiper laminates 9 reaches a predetermined number, the laminate take-out device 91 takes them out.

  3A to 3E are enlarged views of the folding unit 60. FIG. A method for folding the wiper laminate 9 using the rotary cylinder type inter-holder will be further described. First, the folded portion of the product sheet 7a is gripped by the claw-shaped jaw 61b on the left folding roll 61, and the product sheet 7b sucked and held in the vacuum zone 61a is held on the right folding roll 61. (FIG. 3A). The left folding bar 61e (not shown) opens the jaw 61b, and the product sheet 7a pushes the folded portion of the product sheet 7a downward while winding the product sheet 7b, so that the fold 71 enters (FIG. 3 (b)). . The right folding bar 61e (not shown) opens the jaw 61b, and the product sheet 7b pushes the folded portion of the product sheet 7b downward while winding the product sheet 7c, so that the fold 71 enters (FIG. 3 (c)). . Similarly, the product sheet 7c is folded 71 while winding the product sheet 7d (FIG. 3 (d)), and the product sheet 7d is folded 71 while winding the product sheet 7e (FIG. 3 (e)). By repeating this, the wiper laminate 9 is formed.

  When folding with a rotary cylinder type inter-holder, the folding direction is a direction perpendicular to the fiber direction (MD direction) 51 of the original web 5, so that a hard sheet is difficult to fold, and a sheet for obtaining good folding performance. Is required to have a suitable softness.

  In addition, the wiper laminated body 9 manufactured by the folding unit 60 is cut into the product length of the wiper with the knife 61d and the knife receiver 62 in the traveling direction of the raw rolls R and L, and then the final number of sets ( For example, the wiper laminate 9 is cut into the product width of the wiper (direction perpendicular to the folding line) with a cutter (not shown), and then packed in a storage box to form a wiper package.

  By the way, non-woven wipers are used for cleaning at food-related sites such as food processing plants, lunch centers, and restaurants. Often colored wipes are used to help detect food contamination. When wiping or disinfecting dirt with such a wiper, the wiper is often used after being immersed in a cleaning solution containing water, alcohol, or the like.

  In order to produce a wiper that does not easily lose its color even when immersed in water, alcohol, or the like, it is necessary to add a certain amount of various binders such as an acrylic binder to prevent discoloration.

JP 2010-209482 A JP 2008-127688 A JP 2005-245752 A

  However, it is known that a sheet of a nonwoven fabric prepared by adding this binder is generally cured. In particular, in the process of manufacturing the wiper laminate 9 by the above-described rotary cylinder type inter-holder, when the sheet 7 is hard, it is difficult to pass and hold the sheet 7 so as to follow the curved folding roll 61 surface. It may cause sheet flaws in the process. As shown in FIG. 4 (a), the wiper laminate 9 is configured such that the sheets 71 are neatly stacked and properly stored in the storage box 20 when the folds 71 are properly inserted. If it becomes hard, the jaw 61b becomes difficult to pinch the sheet 7 and the crease at the folding portion becomes insufficient. Therefore, when the jaw 61b opens the product sheets 7a to 7e, Even if the sheet is repelled and can be stored in the storage box 20, an orderly wiper laminate 9 cannot be obtained (see FIG. 4B). When the sheet becomes hard in this way, there is a problem in that the production of the wiper laminate 9 is liable to occur and the productivity is low.

  Then, this invention is made | formed in view of such a subject, The objective is to provide the wiper and wiper package which have high productivity.

In order to solve the above problems, the present invention is grasped by the following configuration.
(1) The wiper package of the present invention is a wiper package including a wiper and a wiper storage box. The wiper is formed from a nonwoven fabric, is colored, and is selected from acrylic, vinyl acetate, and synthetic rubber. Containing 0.01% to 0.50% by weight of a binder for preventing discoloration, a basis weight of 35 g / m ^{2 to} 65 g / m ² , and 45 of 5.0 cm to 11.5 cm ° possess a bending resistance MD direction conforming to the cantilever method, the wiper storage box has a takeout at the top, housing a wiper stack in which the wiper is stacked, take-out direction of the wiper The wiper is in the vertical direction (MD direction) .

(2) The wiper package of the present invention is characterized in that, in the configuration of (1), the wiper has a thickness of 0.23 mm to 0.70 mm.

(3) In the wiper package of the present invention, in the configuration of (1) or (2), the wipers are folded using a rotary cylinder type inter-holder, alternately stacked and folded in a pop-up manner and stacked. characterized in that that.

(4) Wiper package of the present invention, (1) to in the construction of (3), before Symbol wiper storage box, flat sheet having 200 g / ^{m 2} or more 550 g / ^{m 2} or less basis weight or A resin film having a thickness of 40 μm or more and 80 μm or less is used as a base material .

  According to the wiper and wiper package of the present invention, the above-described configuration produces an effect of improving productivity.

The perspective view which shows the external appearance of the wiper package which concerns on this invention. (A) And (b) is explanatory drawing of a folding machine provided with a rotary cylinder type inter holder. (A) thru | or (e) are the enlarged views of a folding part. Sectional drawing of the wiper laminated body which laminated | stacked the wiper which concerns on this invention.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention (hereinafter referred to as embodiments) will be described in detail with reference to the accompanying drawings. Note that the same number is assigned to the same element throughout the description of the embodiment.

  As an example of this embodiment, a wiper package that houses a wiper will be described. FIG. 1 is a perspective view showing an appearance of a wiper package according to the present invention. The wiper package 1 includes a wiper stack (not shown) in which the wipers 3 are stacked, and a substantially rectangular parallelepiped storage box 20 having an outlet 21 in the longitudinal direction of the substantially central portion of the surface of the wiper package 1. Has been. When the wiper package 1 is used, a finger is inserted into the storage box 20 from the outlet 21, and the wiper 3 at the top is picked and pulled out. In addition, in the case of folding with a rotary cylinder type inter-holder, the removal direction of the wiper corresponds to the longitudinal direction (MD direction) of the wiper having a high tensile strength.

  The nonwoven fabric that is the base material of the wiper is not particularly limited, and examples thereof include those obtained by laminating and integrating rayon fibers, polyester fibers, polypropylene fibers, polyamide fibers, polyethylene fibers, acrylic fibers, cotton, wool, and the like. The integration method is not limited as long as it is a method that can maintain a strength that does not cause lint or the like when used as a wiper, such as a method using a water jet or a needle punch.

  The colorant for coloring the wiper is not particularly limited, and is generally a direct dye, a cationic dye, a basic dye, an acid dye or the like, which is used for coloring fibers and paper, a natural dye, a food dye, a dye base or a pigment base. Can be used. Among these, direct dyes, cationic dyes, and pigment-based inks are preferable from the viewpoints of dyeability and weather resistance. The color is not particularly limited, such as red, blue, yellow, and the like, and the blending amount can be appropriately determined as long as it does not cause discoloration.

  As a method for coloring the wiper with the colorant, a known coloring method can be adopted. The coloring surface is not particularly limited on one side or both sides of the wiper, but it is preferable to color both sides from the viewpoint of suppressing fluff.

  Examples of direct dyes include anionic direct dyes and cationic direct dyes. Among these, an anionic direct dye is more preferable because it has a great effect of suppressing the dyeing property of the wiper to the base material, the coloring cost, and the color fading. When a dye is blended in the raw material, it is preferable to add an anionic dye after adding a cationic softening agent (a cationic paper strength agent if necessary) to the raw material pulp, because it can give a soft texture. .

  The cationic dye is dyed by binding to an acidic group in pulp as a quaternary ammonium compound type cation, and examples thereof include polymethine series, azo series, azamethine series, and anthraquinone series.

  Examples of pigment-based inks include inorganic pigments, organic pigments, and lake pigment inks. From the viewpoint of fixability of the wiper to the substrate, it is preferable to use an ink of an inorganic pigment.

  The binder is not particularly limited as long as the wiper dyed with the colorant is prevented from being discolored by water or alcohol, and examples thereof include acrylic, vinyl acetate and synthetic rubber binders. The binder amount indicates a weight ratio with respect to the original fabric, and is 0.01% or more and 0.50% or less, preferably 0.05% or more and 0.40% or less. If it is less than 0.01%, color fading often occurs. Conversely, if it exceeds 0.50%, the absorbability of the wiper is lowered.

  Furthermore, if necessary, a heat stabilizer, a lubricant and the like can be blended in the wiper within a range not impairing the object of the present invention. Examples of the heat resistant stabilizer include phenol-based stabilizers such as BHT (2,6-di-t-butyl-4-methylphenol).

The basis weight of the wiper is measured by a method according to JIS P 8124, 35g / ^{m 2} or more 65 g / ^{m 2} or less, 35 g / ^{m 2} or more 50 g / ^{m 2} or less. If it is less than 35 g / m ^2, it is difficult to form a wiper. Conversely, if it exceeds 65 g / m ² , it becomes difficult to cut the product.

  The bending resistance in the MD direction of the wiper means an average value on the front and back surfaces of the sheet when the sample is measured as 2.5 cm wide × 15 cm long according to JIS L 1096 (1999) 45 ° cantilever method. 0.0 cm or more and 11.5 cm.

A wiper formed from a non-woven fabric has a basis weight of 35 g / m ² or more and 65 g / m ² or less and a bending resistance of 5.0 cm or more and 11.5 cm, thereby improving the flexibility of the colored wiper and producing it. Improves.

  The thickness of the wiper is measured by a method according to JIS P 8118 and is not less than 0.23 mm and not more than 0.70 mm. If it is less than 0.23 mm, it is easy to break, and conversely if it exceeds 0.70 mm, the handleability is lowered.

  The wipers are alternately stacked, folded and stacked by a rotary cylinder type inter-holder, and stored in a storage box having an outlet on the upper surface. The folding method is not particularly limited, such as a so-called pop-up type or single hold type, in which a part of the next piece is exposed outside the opening when one piece is taken out from the opening during use, but it is taken out with one hand. Easy pop-up format is preferred.

  Although the base material of a storage box is not specifically limited, A paper box, a resin film, a plastic box, and a hand towel dispenser can be mentioned. Further, the size, such as the height, width, and length of the packaging material is not particularly limited. A sticking jig, for example, a magnet, a double-sided tape, or an adhesive, may be attached to a part of the storage box to make it a wall-hanging type.

  The paper box can be formed using, for example, flat paper such as wood pulp, waste paper, corrugated paper, and coated cardboard, and coated cardboard is preferred from the viewpoint of strength.

The basis weight of the flat sheet is measured in accordance with JIS P8124, 200g / ^m is preferably ² or more 550 g / ^{m 2} or less, 250 g / ^m, more preferably ² or more 500 g / ^{m 2} or less, 300 g / ^{m 2} or more 500 g / m Most preferred is ² or less. When the basis weight is less than 200 g / m ² , the strength becomes insufficient. On the other hand, when the basis weight exceeds 550 g / m ² , the workability is lowered when the flat paper is bent and formed into a three-dimensional shape.

  Examples of the resin film include a polyethylene film, a polypropylene film, a polyethylene terephthalate film, a polyvinyl alcohol film, a polystyrene film, and an ethylene-vinyl alcohol copolymer film. Of these, a linear low density polyethylene film is preferred because of its high transparency and excellent tearing ability at the perforation. The thickness of the resin film is preferably 40 μm or more and 80 μm or less. When the thickness is less than 40 μm, the shape maintaining force of the folded and laminated wipers is low, and the strength of the wiper itself is insufficient. On the other hand, when it exceeds 80 μm, the rigidity is too high, and the handleability and the sealing performance deteriorate.

  Hereinafter, the present invention will be described more specifically with reference to Examples and Comparative Examples.

(Basis weight)
It measured by the method based on JISP8124.

(Flexibility in MD direction)
In accordance with JIS L 1096 (1999) 45 ° cantilever method, the sample was measured as 2.5 cm wide × 15 cm long, and the average value on the front and back surfaces of the sheet was used. The lower the numerical value, the softer the softness.

(thickness)
It measured by the method based on JISP8118.

Example 1
Using a non-woven fabric blended with 100% rayon as a base material for the wiper, a mixed solution of pigment and 0.50% by weight acrylic binder was applied and dried with a roll applicator, and the basis weight was 35 g / m ² and the thickness was 0.00. A 23 mm wiper was produced. When the bending resistance in the MD direction of this wiper was measured, it was found to be 9.6 cm. Next, the raw material of the wiper was folded using the rotary cylinder type inter-holder shown in FIG. 2 to produce a wiper laminate. These results are shown in Table 1.

(Examples 2 to 7)
For Examples 2 to 7, wipers were prepared in the same manner as in Example 1 with the basis weight and binder amount shown in Table 1, and the bending resistance of the wiper in the MD direction was measured. Next, a wiper laminate was produced in exactly the same manner as in Example 1. These results are shown in Table 1.

(Comparative Example 1)
As shown in Table 2, a wiper was produced in the same manner as in Example 1 except that the basis weight was changed to 30 g / m ² and no binder was added. However, the bending resistance of the wiper in the MD direction was below the detection limit (ND), and folding was attempted using a rotary cylinder type inter-holder, but a wiper laminate could not be produced. These results are shown in Table 2.

(Comparative Example 2)
As shown in Table 2, a wiper was produced in the same manner as in Example 1 except that the basis weight was changed to 50 g / m ² . Since this wiper had a higher basis weight than that of Example 3 and the MD softness was as hard as 12.4 cm, folding work could not be performed efficiently, and a defect occurred in the wiper laminate. These results are shown in Table 2.

(Comparative Example 3)
As shown in Table 2, a wiper was produced in exactly the same manner as in Example 1 except that the basis weight was changed to 55 g / m ² and the binder amount was changed to 0.40% by weight. Although this wiper had a smaller amount of binder as compared with Example 5, the bending resistance in the MD direction was as hard as 17 cm, so that folding could not be performed efficiently, and a defect occurred in the wiper laminate. These results are shown in Table 2.

(Comparative Example 4)
As shown in Table 2, wipers were produced in exactly the same manner as in Example 1, except that the basis weight was changed to 55 g / m ² and the binder amount was changed to 0.50% by weight. Since this wiper had a larger binder amount than Example 6 and the bending resistance in the MD direction was as hard as 13.6 cm, folding was attempted, but a wiper laminate could not be produced. These results are shown in Table 2.

(Comparative Example 5)
As shown in Table 2, wipers were produced in exactly the same manner as in Example 1, except that the basis weight was changed to 70 g / m ² and the binder amount was changed to 0.01% by weight. This wiper has the same binder amount as in Example 7, and the bending resistance in the MD direction is almost the same as 5.3 cm. However, since the basis weight is large, folding cannot be performed efficiently, and the wiper laminate is A malfunction occurred. These results are shown in Table 2.

  As mentioned above, although this invention was demonstrated using embodiment, it cannot be overemphasized that the technical scope of this invention is not limited to the range as described in the said embodiment. It will be apparent to those skilled in the art that various modifications or improvements can be added to the above-described embodiments. Further, it is apparent from the scope of the claims that the embodiments added with such changes or improvements can be included in the technical scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Wiper packaging body 3 Wiper 9 Wiper laminated body 91 Laminate take-out apparatus 20 Storage box 21 Exit 100 Folding machine R, L Original fabric roll 31 Felt roll 32 Feed roll 5 Original fabric web 51 MD direction 60 of original fabric web Folding part 61 Folding roll 61a Vacuum zone 61b Jaw 61c Groove 61d Knife 61e Folding bar 62 Knife receptacle 7 Sheet 71 Folding 7a, 7b, 7c, 7d, 7e Product sheet

Claims (4)

A wiper package comprising a wiper and a wiper storage box,
The wiper is formed from a nonwoven fabric,
Colored,
Containing 0.01% by weight or more and 0.50% by weight or less of a binder for preventing color fading selected from acrylic, vinyl acetate and synthetic rubbers;
A basis weight of 35 g / m ² or more and 65 g / m ² or less;
Having a bending resistance in the MD direction based on the 45 ° cantilever method of 5.0 cm or more and 11.5 cm or less,
The wiper storage box has an outlet at an upper portion thereof, and stores a wiper laminated body in which the wipers are stacked, and a direction in which the wiper is taken out is a longitudinal direction (MD direction) of the wiper. Wiper package.   The wiper package according to claim 1, wherein the wiper has a thickness of 0.23 mm to 0.70 mm. The wiper package according to claim 1 or 2 , wherein the wiper is folded using a rotary cylinder type inter-holder, stacked alternately and folded in a pop-up manner. The wiper storage box, claims 1, characterized in that as a base a resin film having a planar paper or 40μm or 80μm or less in thickness having 200 g / ^{m 2} or more 550 g / ^{m 2} or less basis weight of 3 The wiper package according to any one of the above.

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