JP6814569B2 - Wipe products - Google Patents

Description

The present invention relates to a wipe product containing an industrial wipe, particularly a wipe product containing an industrial wipe used for wiping laboratory equipment or the like in a laboratory or a research institution.

In laboratories and research institutes of companies and universities, industrial wipers, also called laboratory wipers and laboratory wipers, are used to wipe off moisture and dirt adhering to laboratory equipment.

The mainstream of this wipe is a product in which a plurality of bundles are stored in a rigid storage box, which is also called a carton box. This wipe product has a so-called pop-up format in which a part of the next one is exposed when one is taken out from the outlet, but many of these wipe products are like boxed tissue paper products for home use. Each sheet constituting the bundle is not a single leaf, and the adjacent sheets are continuous through perforations to form a folded bundle. The reason why adjacent sheets are continuous through the perforations is that in this type of wipe product, the shape of the storage box is close to a rectangular parallelepiped to save space, and the shape of the sheet is in the drawer direction. The mainstream is a bundle that has a long and slender shape, and in the case of a bundle composed of such elongated sheets, the next one easily falls into the storage box when the sheet is pulled out, so this storage box This is to prevent the sheet from falling inside so that it can pop up to the end.

In particular, in laboratories, etc., it is necessary to reliably prevent contamination of equipment, but when the sheet falls into the storage box, it is necessary to put your hand in the storage box and pull it out. It is important to prevent the sheet from falling, as it can contaminate the bundle.

However, conventional industrial wipe products have the following problems. First, in this type of industrial wipe, low dust resistance that does not generate paper dust is important from the viewpoint of preventing contamination of equipment, but conventional sheets are not connected through perforations. , Paper dust may be generated when cutting perforations.

Further, since the conventional wipe product uses a storage box, it is necessary to disassemble the storage box after use and separate the so-called window film and the paper box as needed, which is troublesome to dispose of. Furthermore, after disposal, the storage box becomes bulky in the trash can. Further, after the storage box is discarded, the corners of the storage box may damage the resin film garbage bag. In particular, damage to garbage bags in laboratories and the like can lead to contamination of equipment, so countermeasures are desired.

Further, since the conventional wipe product has an inflexible storage box, it is bulky even at the product stage such as at the time of product distribution and product storage, and there is a problem that the distribution cost is high.

In addition, conventional wipe products have a structure in which the outlet of the storage box is provided with a window film having a slit, and the sheets are pulled out one by one from this slit. When the number of sheets is reduced and the weight of the product is reduced, the entire box is lifted when the sheet is pulled out due to the friction between the sheet and the film (slit) and the structure in which the sheets are connected by perforations, and the drawer becomes smooth. Sometimes I couldn't do it.

Japanese Patent No. 5366596 Japanese Unexamined Patent Publication No. 2006-143254 Japanese Unexamined Patent Publication No. 2005-143523 Japanese Unexamined Patent Publication No. 8-134764 JP-A-2009-7725

Therefore, a main object of the present invention is to provide a wipe product that solves the problem of paper dust generation due to perforations and the problem of disposal of a storage box, which are present in conventional wipe products.

The means for solving the above problems and their actions and effects are as follows.

[Invention according to claim 1]
A laminated bundle in which a plurality of wipes are laminated and an exterior film for wrapping the laminated bundle are provided.
The wipe has a basis weight of 15 to 25 g / m ² , a paper thickness of 100 to 140 μm, a size of 130 ± 10 mm in width, and a length of 198 ± 10 mm.
The laminated bundle has a width of 130 ± 10 mm and a length of 100 ± 10 mm. And
A perforation for opening is formed along the width direction of the wipe including a position facing the upper surface of the laminated bundle of the exterior film, and the length of the perforation for opening is 100 to 100 to the width of the wipe. 145% of the length, and the outer film is a polypropylene film or polyethylene film, thickness 25~35μm der is, the dynamic friction coefficient according to JIS K 7125 is 0.20 to 0.30, it A wipe product that features.

According to the present invention, there is no risk of paper dust being generated due to perforation cutting, and since there is no box, distribution costs and storage costs can be reduced, and there is no problem when disposing of the storage box. Wipe products are sometimes offered that do not cause the wipe to drop or lift the entire product.

It is a perspective view of the wipe product of embodiment of this invention. It is a perspective view of the wipe product of the embodiment of this invention. It is the schematic of the cross section III-III of FIG. It is a figure for demonstrating the wipe which concerns on the wipe product of embodiment of this invention. It is a perspective view at the time of opening of the wipe product of embodiment of this invention.

Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 5.

In the wipe product 1 according to the present embodiment, a substantially rectangular parallelepiped laminated bundle 20 formed by folding and stacking a plurality of wipes 2 is wrapped by a flexible resin exterior film 3 instead of a storage box.

In the laminated bundle 20 according to the present embodiment, the folded pieces 2E of the wipes located above and below the wipe 2 are sandwiched between the folded inner surfaces 2A of the wipes 2, 2 ... 2 ... Are stacked while being alternately overlapped with each other, and are of a type called a pop-up type or an interfold type (referred to as a pop-up type in the present invention and the present specification). When one of the uppermost wipes located on the uppermost surface of the laminated bundle 20 is pulled out upward, a folded piece of an adjacent wipe is hung and pulled up immediately below the laminated bundle 20. This type of laminated bundle can be manufactured by known interfolders.

On the other hand, the exterior film 3 of the present embodiment is linearly formed with perforations 30 for opening, and the outlet 31 of the wipe 2 is formed by dehiscence of the perforations 30. The cut tie ratio at the perforation is not particularly limited in the present invention. In the wipe product 1 according to the present embodiment, the perforations 30 are located on the upper surface of the laminated bundle 20, and from the upper surface of the laminated bundle 20 via an outlet 31 formed by dehiscence of the perforations 30. Wipe 2 is pulled out sequentially. As described above, in the wipe product 1 according to the present embodiment, since the laminated bundle 20 is a pop-up type, when one wipe is pulled out from the laminated bundle 20, the folded piece 2E of the wipe directly under the drawn wipe is lifted and the folded piece 2E is lifted. It will be exposed from the outlet 31. The perforation 30 may be covered with a peelable flexible sealing material or the like, and the sealing material may be peeled off at the time of use to expose the perforation 30 and then dehisce. In this way, the product becomes more hygienic.

Here, in the wipe product 1 of the present embodiment, since the laminated bundle 20 is packaged by the flexible resin outer film 3, the problem caused by the storage box does not occur. That is, it is not necessary to disassemble the storage box after the wipe 2 is used up, or to separate the so-called window film and the paper box portion as needed, and there is no problem that the storage box becomes bulky in the trash box after disposal. Further, since both the exterior film 3 and the laminated bundle 20 are flexible, the transportation amount (transportation number) can be easily increased as compared with the conventional product using a storage box. In addition, the storage space at the product stage such as when storing the product can be saved. Therefore, transportation costs and storage costs can be reduced. On the other hand, if the laminated bundle is simply wrapped with an exterior film, unlike the storage box, it becomes difficult to maintain the shape of the outlet in a slit shape, so the risk of the wipe falling into the packaging tends to increase, and the storage box In comparison, the exterior film is lighter, so when the number of wipes that make up the laminated bundle is reduced and the product weight is lighter, there is a greater risk that the entire product will be lifted when the wipe is pulled out from the outlet. However, in the wipe product 1 according to the present embodiment, by adopting the following configuration and a preferable configuration, it is possible to prevent the wipe product 1 from being depressed or lifted as compared with the conventional product using the storage box.

As the packaging form of the wipe product 1 according to the present embodiment with the exterior film 3, pillow packaging and gusset packaging are preferable, and pillow packaging with gusset is particularly suitable. In particular, in the wipe product 1 according to the present embodiment, the gusset portion 3A of the exterior film 3 is provided on the surface 2f formed by arranging the folded edges 2F of the pop-up type laminated bundle 20, and the edges other than the folded edges 2F are lined up. It is desirable that the sealing portion 3B is located on the surface 2x formed of. In such a packaging form, the gusset portion 3A of the exterior film 3 is easily crushed, and the upper surface position of the exterior film 3 is likely to be lowered as the height of the laminated bundle 20 is lowered by using the wipe 2, and the layers are laminated. The distance between the upper surface of the bundle 20 and the outlet 31 formed on the upper surface of the exterior film 3 is unlikely to be excessively widened. Therefore, the folded piece 2E is less likely to fall into the exterior film.

On the other hand, the size of the wipe 2 according to the present embodiment is 130 ± 10 mm for the width L1 and 198 ± 10 mm for the length L2. In particular, it is desirable that the width direction of the wipe 2 is the CD direction and the length direction is the MD direction. This will improve the popup. Then, in the laminated bundle 20, each wipe 2, 2 ... Not connected at the perforation is folded back in two in the length direction and taken in a pop-up manner. Therefore, the laminated bundle 20 according to the present embodiment has a width (length of the folded edge 2F and the edge 2e of the folded piece 2E) of 130 ± 10 mm, and is a piece between the folded edge 2F and the edge 2e of the folded piece 2E. The length of is 100 ± 10 mm. The length of the uppermost folded piece 2E of the laminated bundle 20 exposed from the outlet 31 is long, so that it is easily exposed from the outlet 31 and is preferably prevented from falling into the exterior film 3. The length L3 of the laminated bundle 20 does not necessarily become 1/2 of the length L2 of the wipe 1 due to the misalignment of the wipes and the accuracy of folding in half. Further, if the size of the wipe 1 is within the above range, it is sufficient for wiping laboratory equipment such as a laboratory, and when the laminated bundle 20 is formed, the upper surface (bottom shape) becomes a shape close to a square, making the product compact. can do. The height of the laminated bundle 20 is not necessarily limited, but is preferably 40 to 55 mm. Within this height range, the lowering of the upper surface position of the exterior film 3 functions more reliably. Further, the number of wipes 2 constituting the laminated bundle 20 is not limited, but is 120 to 240 sets (sheets). Further, the wipe 2 according to the present embodiment is preferably 2 plies or less, particularly 1 ply. It becomes easier to secure the suppleness when popping up and the suppleness when wiping.

The perforation 30 of the exterior film 3 of the wipe product 1 according to the present embodiment is located at a position facing the upper surface of the laminated bundle 20 as described above, and is particularly formed along the width direction of the wipe 2. The length L4 is equal to or greater than the width L1 of the wipe 2, preferably 100 to 145%. In other words, the perforation 30 according to the present embodiment extends in the direction along the folded edge 2F of the wipe 2 in the state of the laminated bundle 20, and is particularly longer than the length of the folded edge 2F (= width L1 of the wipe 2). It has a length of L4. Further, the perforation 30 is formed so as to extend in the direction along the folded edge 2e at the central position between the surfaces 2f and 2f formed by arranging the folded edges 2e. By combining the packaging form of the pillow packaging, the gusset packaging, and the pillow packaging with the gusset and the flexibility of the exterior film 3, the length of the perforation 30 is set to the width L1 or more of the wipe 2, and the outlet is excessively opened. The outlet 31 is maintained in a slit shape, and the edge 31e of the outlet 31 has appropriate flexibility and deformability. In the size of the wipe 2 described above, particularly in the length of the folded piece 2E, when popping up. The folded piece 2E is smoothly pulled out and exposed without being caught by the edge 31e of the outlet 31, preventing the product from falling into the inside, and even if the number of wipes 2 constituting the laminated bundle 20 is reduced, the wipe is wiped. It becomes difficult to lift each product.

Here, in the wipe product 1 of the present embodiment, the laminated bundle 20 is composed of single-wap wipes 2, 2 ... In which the wipes are not connected by perforations and are separated from each other. In a laminated bundle in which wipes are connected at perforations, the effect of the present invention cannot be sufficiently obtained. Further, in particular, the wipe product 1 of the present embodiment has an effect that there is no dehiscence at the perforation at the time of pop-up because the wipe product 1 is not connected at the perforation, and no paper dust is generated due to the dehiscence.

On the other hand, the exterior film 3 according to the wipe product 1 according to the present embodiment is a polypropylene film or a polyethylene film, and the thickness thereof is 25 to 35 μm. By doing so, it is possible to maintain an appropriate positional relationship between the upper surface of the laminated bundle 20 and the position of the outlet 31 due to the deformation of the gusset portion 3A according to the above-mentioned packaging form, and to maintain a suitable slit-shaped outlet after opening the perforation 30. The effect of the flexibility of the exterior film 3 such as the effect of forming the shape becomes more certain. Of these, the most preferable is a non-stretched polypropylene film (CPP) having excellent heat-sealing properties. Such an exterior film 3 has good deformability and can be manufactured at low cost. The thickness in the present invention is a value measured by JIS K 7130. Further, the exterior film 3 has a longitudinal tensile strength of 65 to 100 MPa, a lateral tensile strength of 50 to 60 MPa, a longitudinal tensile elongation of 500 to 800%, and a lateral tensile elongation of 750 to 900%. It is desirable that the tensile elastic modulus in the vertical direction is 800 to 1000 MPa and the tensile elastic modulus in the horizontal direction is 800 to 1000 MPa. Excellent openability of perforations for opening. These tensile strength, tensile elongation, and tensile elastic modulus are values measured based on JIS K 7128. Further, it is desirable that the exterior film 3 has a coefficient of dynamic friction according to JIS K 7125 of 0.20 to 0.30. The wipe pullability becomes better.

Further, in the wipe 2 according to the wipe product 1 according to the present embodiment, the constituent fibers preferably have NBKP of 70 to 100% by weight, more preferably 90% or more, and particularly preferably 100%. In the case of NBKP 100% by weight, paper dust is particularly unlikely to be generated. When there are constituent fibers other than NBKP, LBKP (hardwood kraft pulp) is preferable, but other non-wood pulps such as Kenaf pulp and Manila hemp, and synthetic fibers such as polyester fiber, rayon fiber and acrylic fiber may also be used. ..

The basis weight of the wipe 2 according to the present embodiment is 15 to 25 g / m ² . The basis weight is based on the measurement method of JIS P 8124 (1998). The paper thickness of the wipe is 100 to 140 μm. The paper thickness here is determined by adjusting the humidity of the test piece sufficiently under the conditions of JIS P 8111 (1998), and then using the dial thickness gauge (thickness measuring instrument) "PEACOCK G type" (manufactured by Ozaki Seisakusho) under the same conditions. It means the value measured in the state of 1 ply using. Specifically, after confirming that there is no dust, dust, etc. between the plunger and the measuring table, lower the plunger on the measuring table, move the memory of the dial thickness gauge to set the zero point, and then set the zero point. , Raise the plunger, place the sample on the test table, slowly lower the plunger and read the gauge at that time. At this time, only the plunger is placed. The terminal of the plunger is made of metal so that a flat surface having a diameter of 10 mm hits the paper plane perpendicularly, and the load at the time of measuring the paper thickness is about 70 gf. The paper thickness is an average value obtained by performing the measurement 10 times.

Further, in the wipe 2 according to the present embodiment, the wet paper strength enhancer is 0.125 to 1.25 parts by mass (more preferably 0.4 to 0.6 parts by mass) with respect to 100 parts by mass of the constituent fibers. , The softener may be contained in an amount of 0.01 to 0.5 parts by mass (more preferably 0.15 to 0.22 parts by mass). Kaimen is suitable as the wet paper strength enhancer, and fatty acid ester-based softeners, polyphosphates, quaternary ammonium salt-type cationic surfactants and the like are suitable as softeners.

On the other hand, it is desirable that the wipe 2 according to the present embodiment has a crepe rate of 12 to 25% at the time of manufacture. Within this range, the softness and smoothness are excellent, the wiping property is excellent, and the wipe 2 pulled out can be preferably prevented from falling into the exterior film 3 in relation to the exterior film. The wipe 2 has a softness value (handle ometer method: according to JIS L 1096E) preferably 3.0 to 12.0 g, more preferably 3.5 to 6.0 g. The adhesion between the sheets will be appropriate, and pop-up will be ensured. The softness in this embodiment is determined by using a handle omometer (Kumaya Riki Kogyo Co., Ltd.) for 10 test pieces measuring 10 cm in length and 10 cm in width, 5 times each in the vertical direction and the horizontal direction on the front side. It is each average value measured. At this time, the slot width (clearance) for pushing the blade is 5 mm, and the load is 25 gf.

In the wipe 2 according to the present embodiment, the value of the average deviation of the friction coefficient of the wipe surface (fluctuation of surface roughness when the friction element is moved: MMD) is 7.0 to 20.0, more preferably 7. It should be 0 to 15.0. MMD is a value measured using "Friction Tester KESSE" manufactured by Kato Tech Co., Ltd. In the measurement, 10 piano wires having a diameter of 5 mm are adjacent to each other, a unit bulging portion having a radius of curvature of 0.25 mm is adjacent to the tip, and a continuous contact surface having a total width of 5 mm is provided. The friction element having a length of 5 mm was moved 2 cm at a speed of 0.1 cm / sec while applying a tension of 20 g / cm in the moving direction to the paper sample while contacting the paper sample with a contact pressure of 50 g. The friction coefficient at that time is measured, and this friction coefficient is divided by the friction distance (moving distance = 2 cm).

〔Example〕
For Examples and Comparative Examples of the present invention, the wipe drop prevention property and whether or not the entire product was lifted at the time of pop-up were tested. The sample used in the test was a pop-up type laminated bundle consisting of 200 wipes of 1 ply wrapped with an exterior film in a pillow packaging format with a gusset, and a perforation for forming an outlet was provided on the upper surface. The length of this perforation was made different between the example and the comparative example. In the laminated bundle, the wipes were not connected at the perforations. Further, as the exterior film, polypropylene films having thicknesses of 25 μm, 30 μm, 35 μm, 40 μm, and 50 μm were used. As the wipe, a commercially available product having 100% by mass of NBKP as a constituent fiber (“Soft Micro Wiper S220” (basis weight 21 g / m ² ) manufactured by Daio Paper Corporation) was used. The size of the wipe is 130 mm in width and 198 mm in length. The size of the laminated bundle is 130 mm in width, 103 mm in length, and 45 mm in height. Further, when the laminated bundle is wrapped with an exterior film in a pillow packaging format with a gusset, the width is 140 mm, the length is 107 mm, and the height is 48 mm. The length of the perforation for forming the outlet was 130 mm, 188 mm in the example, and 90 mm, 120 mm, 130 mm, and 188 mm in the comparative example. 188 mm is worth the length from 3B (sealing seal part to 3B (sealing seal part) on the opposite side. The test method is to dehiscence the perforations and sequentially perform a general operation on 200 laminated bundles. The wipes were popped out one by one and pulled out, and the number of the next wipes that were not exposed from the outlet and fell down was counted, and it was visually confirmed whether the entire product was lifted at the time of pulling out. Together with the configurations of Examples and Comparative Examples. The results of the test are shown in Table 1 below. For the wipe drop, 200 sheets of commercially available film-wrapped sheets were popped up one by one, and the number of times the next sheet was dropped into the film was counted. This was repeated 5 times. , The average value was taken. It was judged that the average number of drops should be 1 or less.

The lift of each product was judged as ⊚ when it was not lifted at all, ◯ when it was lifted 1 to 4 times, and × when it was lifted 5 times or more.

As shown in the results of Table 1, in the examples of the present invention, the dip is very small and the lift is unlikely to occur. In particular, when the thickness of the exterior film is 25 to 35 μm, if the perforation length ratio ((L4 / L1) × 100 (%)) is 100 to 145%, there is almost no drop and lifting occurs. Not done. On the other hand, in the comparative example, it was depressed and the lift was remarkably confirmed. Therefore, if the configuration of the present invention is adopted, the wipe does not drop and the product does not lift up. Then, a wipe product that does not generate paper dust because there is no problem due to the storage box and there is no perforation is provided.

1 ... Wipe product, 2 ... Wipe, 2A ... Folded inner surface, 2E ... Folded piece, 2e ... Folded piece edge, 2F ... Folded edge, 2f ... Folded edge lined surface, 2x ... Non-folded edge lined surface, 3Y ... top surface (part) of exterior film, 20Y ... top surface of laminated bundle, 3 ... exterior film, 3A ... gusset part, 3B ... sealing part for sealing, 20 ... laminated bundle, 30 ... perforation, 31 ... outlet, 31e ... edge of outlet, L1 ... width of wipe (width of laminated bundle 20), L2 ... length of wipe, L3 ... length of laminated bundle, L4 ... length of perforation.

Claims (1)

A laminated bundle in which a plurality of wipes are laminated and an exterior film for wrapping the laminated bundle are provided.
The wipe has a basis weight of 15 to 25 g / m ² , a paper thickness of 100 to 140 μm, a size of 130 ± 10 mm in width, and a length of 198 ± 10 mm.
The laminated bundle has a width of 130 ± 10 mm and a length of 100 ± 10 mm. And
A perforation for opening is formed along the width direction of the wipe including a position facing the upper surface of the laminated bundle of the exterior film, and the length of the perforation for opening is 100 to 100 to the width of the wipe. 145% of the length, and the outer film is a polypropylene film or polyethylene film, thickness 25~35μm der is, the dynamic friction coefficient according to JIS K 7125 is 0.20 to 0.30, it A wipe product that features.

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