JP2010509145A - Structure for packaging sheet materials such as paper - Google Patents

Abstract

  The present invention relates to a structure for wrapping a sheet material such as paper for the purpose of printing or copying, in which a set of sheet paper (3) consists of one continuous protective package (1 ). Inside the protective package (1) is at least one handle (4), which is arranged substantially surrounding all the sheet paper (3) in the package.

Description

Detailed description

  The present invention relates to a structure for packaging sheet materials such as printing paper and copy paper described in the first stage of claim 1.

  Today's copiers and printers can be very large, efficient, and fast, meaning that they use large amounts of paper. In known technology, office paper such as A4 copy paper and printing paper supplied in sheet form is usually packaged in cardboard boxes, and each box contains five packages wrapped in individual wrapping paper . Each package known as a continuous package contains 500 sheets of A4 size paper. Corrugated boxes provide good protection for office paper during transport, but there are problems due to its cost, and also because it takes up space in an empty box until it is disposed of or recycled. Another problem relates to high-speed machines and even situations where paper is used almost continuously on such machines. This is because even if the machine can be equipped with thousands of sheets at once, it is necessary to unpack the packs individually and load each of the 500 sheets into the machine individually. This is because it takes time to replenish the paper feed tray.

  There is also a cardboard box containing, for example, 2,500 loose sheets. In such a case, there is no need to open or dispose of the continuous package, but there is still a problem that the loading into the machine is delayed. This is because it is necessary to stack these sheets into a bundle that can be held in a hand, and to take them out of the box by hand and stack them on a sheet feeding tray of a copying machine or a printing machine. It is also difficult to lift an entire stack of paper with a single lifting handle. This is because a paper bundle can weigh, for example, 10-15 kg. However, at this time, it is necessary to accurately place a heavy paper bundle on a paper feed tray of a copying machine or a printing machine without damaging the corners or edges of these sheets. Heavy bundles can bend at the handle if only one handle is used. This damages the individual sheets or deforms the paper bundle, which makes it difficult to place the paper bundle on the paper feed tray. When lifting with only one handle, heavy bundles can tilt or collapse. Lifting the sheet from the cardboard box is also a problem. Another problem with cardboard boxes is that the larger the material and the thicker the raw material, the greater the amount of waste to be disposed of.

  The present invention wraps sheet material, such as office paper, so as to eliminate the above-mentioned problems and allow easy and quick loading of paper into a copier, printing machine, or other office machine that uses paper. The object is to achieve an optimally advantageous structure. The structure described in the present invention is characterized by what is disclosed in the characterizing stage of claim 1. Other embodiments of the invention are characterized by what is disclosed in the other claims.

  The advantage of the scheme according to the invention is that the package according to the invention is very cheap and quick to manufacture. Another advantage is that office paper can be quickly and easily removed from the package and used inside the wrapping paper that is present as a package protector, or inside the cardboard box, enough for the machine that uses it. It can be loaded using a handle. This reduces machine downtime and keeps the sheet in an optimal condition. A further advantage is that the bottom plate is used as a support under the sheet bundle, which protects the bottom sheet of the sheet bundle from damage. The bottom plate protects the bottom sheet from damage that can occur, for example, when the handle is pulled out, preventing jammed paper that can occur in the course of the paper in a copier, printing machine, or other machine To do.

  In addition, a bundle with two handles and wrapped inside a wrap or box is easier to handle than one with only one handle. When the bundle is lifted with two handles, the balance is better maintained, the risk of tilting is eliminated, and the resulting bundle collapse and / or sheet damage is eliminated. Also, the deflection due to lifting is reduced, and the point load at the edge of the bottom plate of the bundle is halved compared to the case where only one handle is used. If a sheet is fed to the machine using both hands and two handles, the risk of breaking the bundle and thus damaging the sheet is significantly reduced. Another advantage is that the package according to the invention has one carrying handle on the outside of the continuous wrapping and two handles on the inside of the continuous wrapping, which are all arranged at different points. Therefore, the load caused by moving the package or lifting the bundle is applied to various points on the bottom plate, which keeps the bottom plate in better condition, even if the package is rotated or lifted several times before opening. However, there is no deformation of the bottom plate that could loosen the handle for carrying the bundle and the handle for lifting, thus ensuring that the bundle is kept tight.

  Another advantage of the present invention is that it is easy to lift and move a heavy package using both hands, thereby evenly distributing the load between the hands. A well-shaped handle or similar ingenuity prevents the weight from placing the burden on the hand as previously provided by a plastic band or a single lifting handle. A further advantage is that if the entire sheet is packaged with only one relatively thin wrap, the packaging itself is not very wasteful.

  Next, the present invention will be described in detail with reference to the accompanying drawings using application examples.

FIG. 2 is a perspective view from the side of a package according to the invention, with the package protector being a wrapping paper or box removed. 1 is a perspective view from the side of a package according to the present invention. FIG. FIG. 3 is a perspective view from the side of the package of FIG. 2 with the carrying handle removed and a portion of the wrapping paper, which is the package protector, turned over from the unwrapping strip. It is the perspective view from the side of the other package of this invention in the state in which the bundle | flux of a sheet | seat is in the box where a part of lid | cover was cut off. Or FIG. 6 shows examples of various carrying handles suitable for packages according to the present invention. Or FIG. 2 is a simplified enlarged view of various layer structures of protective wrapping paper according to the present invention.

  FIG. 1 shows a package according to one advantageous embodiment of the invention, in which a sheet bundle 2 consisting of separate sheets 3 is extracted from the package. Similarly, FIG. 2 shows a sheet paper package according to one advantageous embodiment of the invention, in which the sheet is wrapped in a single substantially continuous protective package 1. The protective package 1 is made of a substantially thin and flexible wrapping paper 1a. Around the wrapping paper 1a is an external carrying handle 12 that substantially surrounds and surrounds the shorter outer edge of the package and is used to lift and carry the package.

  FIG. 1 shows a package according to the present invention which is opened by completely removing the wrapping paper 1a used as the protective package 1, and the sheet paper 3 contained in the package is indicated by a short line. The sheet papers 3 are all stacked on each other to form a single bundle of, for example, 2,500 sheets or more. Two substantially similar handles 4 that substantially surround the shorter outer edge of the sheet bundle 2 when unwrapped are provided below the surface of the wrapping paper 1a that serves as the protective package 1; These handles are at a suitable horizontal distance from each other and are arranged substantially symmetrically with respect to the center line of the sheet bundle. Accordingly, the handle 4 is disposed, for example, at a substantially equal distance from both ends of the sheet bundle 2 and is disposed so that both handles do not come to the center line portion of the sheet bundle 2. A carrying handle 12 disposed outside the unopened package can be arranged in the center line portion. According to the present invention, the sheet paper 3 is obtained by completely or partially removing the wrapping paper 1a used as the protective package 1 from around the sheet bundle 2 and then using both the handles 4 with both hands. One sheet bundle 2 is lifted and put into a machine that uses paper. The handle 4 is also useful when removing the wrapping paper 1a. The tension of the handle 4 surrounding the sheet bundle 2 is set such that the finger can be easily slid between the handle 4 and the sheet bundle 2. When the sheet bundle 2 is put into a paper feed tray of a machine that uses the sheet paper 3, the handle 4 is cut and pulled out from the lower sheet bundle 2, so that the sheet paper 3 can be used thereafter.

  FIG. 1 further shows a bottom plate 5 arranged on the bottom surface of the sheet bundle 2 in the unopened package inside the protective package 1. This bottom plate serves to support the bundle 2 of sheets, and further facilitates removal of the handle 4 so as not to damage the sheet paper 3 in the bundle 2. For example, the bottom plate 5 protects the bottom sheet 3 from damage when the handle 4 is pulled out, so that the damaged sheet may cause a paper jam that may occur in the course of the paper in a copier, printing machine, or other machine. To prevent. The bottom plate 5 is made of a material that is thicker and stronger than the sheet paper 3. The bottom plate 5 can be arranged on the bottom surface of the sheet bundle 2 in any package according to the invention, even if not shown. The bottom plate 5 also functions to support the sheet bundle 2 and further facilitate the removal of the handle 4 in other systems according to the present invention, as in the package of the above-described embodiment. Further, the bottom plate 5 remains on the bottom surface of the paper feed tray and is not taken into the copying machine or the printing machine. Prior to loading a new sheet bundle 2, the bottom plate 5 is removed from the paper feed tray.

  FIG. 1 further shows an upper plate 6, which is arranged on the upper surface of the sheet bundle 2 in an unopened package inside the protective package 1, which upper plate places the sheet bundle 2, in particular on the upper surface of the bundle 2. The sheet paper 3 is used for supporting from the upper end so as not to be damaged. The upper plate 6 is made of a material that is thicker and stronger than the sheet paper 3. This upper plate 6 can be arranged on the upper surface of the sheet bundle 2 in any package according to the invention, even if not shown. After removing the handle 4, the upper plate 6 is removed from the upper surface of the sheet bundle 2.

  In FIG. 2, a sheet bundle 2 made of a large amount of sheet paper, for example, A4 size, works as a protective package 1 and is in one continuous wrapping paper 1a made of a flexible material mainly composed of paper. Wrapped in The package is made from a wrapping paper 1a based on a reel, and the wrapping paper 1a is pulled directly from the reel during packaging, cut to an appropriate length, and then stacked on top of each other with the wrapping paper 1a. For example, a set of 2,500 sheets of individual office sheet paper 3 is wound. In this way, the top surface, bottom surface, and both long side surfaces of the bundle are wrapped with one continuous wrapping paper, and the rear end 8 of the wrapping paper 1a is overlapped with the front end 8a of the wrapping paper 1a by an appropriate amount, The inner surface is affixed to the outer surface of the front end 8a. Here, the hidden front end 8a of the wrapping paper 1a is shown, but in other drawings, it is shown using a broken line. The rear end 8 of the wrapping paper 1a is suitably located on the top surface of the package, substantially near one of its long corners. Each end of the package has at least outer folds 1b and 1c and inner folds 1d and 1e, and each fold is arranged so that at least a part thereof overlaps. The folded portions at both ends serve to strengthen protection of the end portions of the sheet paper 3 in the package that may damage the plurality of sheets 3 even in a small accident.

  In the package of FIG. 2, the outer folded portions 1b and 1c are adhered to each other using, for example, a thermal adhesive, and at least adhered to the outer surface of the upper inner folded portion 1d, and at least the lower corners of the outer folded portions 1b and 1c. Is separated from the outer surface of the inner folding portions 1d and 1e. Accordingly, a lifting gap 7 opened downward remains between the outer folding parts 1b and 1c and the inner folding parts 1d and 1e, and this gap spreads outward from the end of the package, thereby lifting the package. A person can insert a plurality of fingers into the lifting gap 7 from below, and the lower edge portions of the outer folding portions 1b and 1c serve as a support.

  In FIG. 2, the unwrapping strip 9 is also indicated by a broken line, which is adhered to the inner surface of the wrapping paper 1a. Accordingly, the unwrapping strip 9 is substantially the same length as the width of the wrapping paper 1a before being wrapped around the paper bundle, or is appropriately longer than that. The unwrapping strip 9 is such that when the package is finished, the unwrapping strip 9 is, for example, vertically oriented on one long side of the package and arranged substantially in the middle of the long side. It is attached to the wrapping paper 1a so as to pass through the outer folding part 1c at each end. Thus, the unwrapping strip 9 does not surround the entire package but only about half of the periphery of the package in a horizontal direction substantially parallel to the sheet 3. The material of the opening strip 9 can be varied, but it should be strong enough and substantially inelastic or slightly elastic. The unwrapping strip 9 is hidden inside the wrapping paper 1a, but is shown in FIG. On the other hand, in FIGS. 5 to 8, only the end of the unwrapping strip is shown, but a cut 20 is provided at this end.

  The package in FIG. 2 is surrounded by an outer surface carrying handle 12 for the purpose of lifting and carrying the package. Since it is difficult to carry the package with only one hand, it is also possible to carry the package by inserting both hands into the lifting gap 7. It is also possible to make the package without an outer carrying handle 12 intended to be carried only by the lifting gap 7. Furthermore, the package may include handles or carrying handles arranged in other ways, for example, in the handle system shown in FIGS.

  FIG. 4 shows another scheme according to the present invention. In this system, the protective package 1 is a cardboard box 11 with a lid 10 or a similar box. For clarity, a portion of the lid 10 has been cut away in FIG. A bundle of sheets 2 having a handle 4 and a bottom plate 5 and a top plate 6 that may be present are contained in a box 11, and the box 11 is closed by a lid 10. When the sheet bundle 2 is put into the paper feed tray of the copying machine or the printing machine, the lid of the box 11 is removed, and the sheet bundle 2 is bundled and lifted from the box 11 using the handle 4 with both hands and put into the paper feed tray. If the bundle 2 is in the box 11, the box wall can be opened at its corners and folded before the bundle 2 is lifted. A carrying handle 12 substantially the same as shown in FIG. 2 can be placed around the protective package 1 consisting of the box 11 and its lid 10 of FIG.

  All the schemes shown in the above embodiments, as well as all other schemes according to the present invention, put as many sheets of paper as quickly and easily as ergonomically as possible into the machines that use these papers. It is characterized by manufacturing a paper package so that it can be used. Therefore, the sheet bundle 2 enclosed in the protective package 1 composed of the wrapping paper 1a or the box 11 is a bundle of at least a part of the protective package 1, for example, a part of the wrapping paper 1a or the box 11 or a similar package. As long as it is removed before being put into the machine, it is arranged so that substantially the entire bundle can be put into the machine using the sheet paper 3. If necessary, the entire protective package 1, for example wrapping paper 1a, box 11 or similar package, may be removed before lifting the bundle 2 into the machine. For example, when only a part of the wrapping paper 1a is removed before the bundle 2 is put into the machine, the remaining part of the wrapping paper is removed immediately after the bundle 2 is put into the machine.

  5 to 8 show another type of carrying handle for a package according to the present invention. FIG. 5 shows a package according to the present invention with an independent carrying handle 13 at each end thereof. A strip-shaped appropriately reinforced carrying handle 13 is bonded to each end of the package between the outer folds 1b, 1c and the inner folds 1d, 1e.

  Similarly, FIG. 6 shows a package according to the present invention with an independent carrying handle 14 on the top surface of the package. The carrying handle 14 is made of, for example, fiber-reinforced laminated paper, for example, the ends of the handle 14 so that an adhesive seam is placed between the inside of the handle and the outside of all the folds 1b to 1e of the package. Are glued to each end of the package. The carrying handle 14 may be bonded along a short distance toward the upper surface of the package at both ends of the package. This provides a durable and easy to use carrying handle system.

  FIG. 7 shows a handle system similar to the system in FIG. 6, but in this embodiment, the strip-shaped carrying handle 15 is arranged so as to cross the package laterally, and both ends of the handle 15 are on both sides of the package. Bonded to the surface. To increase durability, the carrying handle 15 may be adhered to the wrapping paper on the top surface of the package along a short distance starting from the top edge of the package.

  The carrying handles 14 and 15 depicted in FIGS. 6 and 7 can also surround the entire package, for example glued to the bottom of the package, making the handles invisible. In such a case, the carrying handle will also support the load, which is used for bonding the wrapping paper 1a to the method of bonding the handle to the wrapping paper or for lifting the package by the folded part at the end of the wrapping paper. It means that it can be made thinner than anything.

  FIG. 8 shows a carrying handle system in which the strip-like handle 16 is arranged so as to cross the package laterally and is bonded to both ends of the upper surface of the package. The adhering matter is reinforced by the reinforcing tag 17, and the tag 17 has a hole through which the carrying handle 16 is passed in the middle. The reinforcing tag 17 is bonded to the upper surface of the package and covers both ends of the carrying handle 16.

The wrapping paper 1a according to the present invention needs to satisfy certain requirements concerning protective suitability, burst strength, tear resistance, adhesion and printability. In addition, the wrapping paper 1a needs to protect the package contents from moisture. Therefore, in order to form the material of the wrapping paper 1a, for example, the base layer 22 can be made into paper, and an addendum can be added to the paper as an on-line coating in the coating processing section of the paper machine during manufacture. . This adduct has a water vapor transmission rate (WVTR) of wrapping paper 1a calculated according to ISO standard 2528: 1995 of about 50 g / m ² / d or less, preferably up to about 30 g / m ² / d, advantageously It consists of a suitable amount of plastic, polymer mixture or similar suitable material 23 that delays moisture absorption up to 10 g / m ² / d. Such polymers or polymer blends added during the paper production process are, for example, latex and various inorganic mixtures.

  According to one embodiment of the present invention, the wrapping paper 1a forming the protective package 1 is smooth and can be covered with plastic more easily. In this case, the wrapping paper is coated on at least one side with a plastic film using a separate extruder, as is done in several known ways. Because the paper is smooth, less plastic is used. Suitable plastic films for this purpose include polyethylene (PE) films, polyethylene terephthalate (PET) films and polypropylene (PP) films.

  Another embodiment of the present invention is a combination of the two embodiments described above. In this system, the wrapping paper 1a is made of paper in which a polymer compound is added to the paper in the coating processing section of the paper machine during production and then a plastic film is added in a separate extruder.

  The material and thickness of the various layers of the wrapping paper 1a are as follows. The final result in each of the three embodiments of the present invention described above is that the total amount of plastic in the entire layered portion of the material is 10% of the total weight of the wrapping paper 1a. Selected to have less wrapping paper. Advantageously, the total amount of plastic is at most about 5% of the total weight of the wrapping paper 1a. As a result, the wrapping paper 1a is environmentally friendly and can be recycled with reduced recycling costs.

  FIG. 9 shows the layer structure of one of the wrapping papers 1a according to the present invention, but only the necessary layers are shown in a simplified manner. Note that the thickness of these layers is not shown. The base of the wrapping paper 1a is made of a paper base layer 22. Depending on the type of paper, the paper base layer 22 can be one or more layers. In the figure, only one layer is shown for simplicity. On the top surface of the paper layer 22 is a printing ink layer 21 which at least partially covers the surface of the paper layer 22. On the other side of the paper layer 22, a polymer layer or similar layer 23 that delays the permeation of moisture is added as an on-line coating during paper production.

  FIG. 10 shows a layer structure similar to the structure in FIG. 9, but a polymer layer or similar layer 23 that retards the permeation of moisture is disposed between the printing ink layer 21 and the paper layer 22. Thus, although printing is performed on layer 23, this layer 23 needs to be suitable for printing. A substantially thin plastic film 25 such as a PE film, a PET film, or a PP film is added to the wrapping paper 1a by an extruder.

  FIG. 11 shows the layer structure of a third embodiment according to the present invention, but only the necessary layers are shown in a simplified manner. Note that the thickness of these layers is not shown. This layer structure is the same as that in FIG. In this structure, a surface layer 24 is added to the upper surface of the paper base layer 22, and the surface layer 24 can be welded using heat or ultrasonic waves. In this case, all normally bonded seams can be bonded by heat or ultrasound without using a separate adhesive. Here, the printing ink layer 21 does not need to extend beyond the seam to be welded.

By using the layering of the wrapping paper 1a, in particular, the thickness, it is possible to adjust the resistance against an impact from the outside of the paper bundle inside the package. At least the thickness of the wrapping paper 1a, the weight of the wrapping paper is 60-250
It is desirable to be within the range of g / m ² . In special cases, this weight can be increased to, for example, 500 g / m ² . Depending on the packaging material, a suitable thickness range is 80-160 g / m ² expressed in weight. This thickness may suitably be such that the weight is between 120 and 150 g / m ² .

  It will be appreciated by persons skilled in the art that the present invention is not limited to the above-described embodiments, but can be modified within the scope of the following claims. For example, the number of sheets of wrapping paper or a sheet bundle in a box can be changed to be different from the above-mentioned 2,500 sheets. A suitable number of sheets is considered to be in the range of about 1,000 to about 5,000, for example.

  Also, those skilled in the art will appreciate that other types of thin protective structures can be used instead of the package described above. For example, wrapping paper made of non-woven fabric or other similar thin protective material can be used in the system according to the invention.

  Furthermore, those skilled in the art will appreciate that there can be only one handle instead of two. In such a case, the width of the handle can be made similar to the width of the handle described above, which makes it easier to lift the sheet bundle with one hand. The handle can also be substantially wider than the handle described above, which lifts one handle located in the center of the sheet bundle with both hands, one for each edge of the handle. It means that it can be used for.

  Furthermore, those skilled in the art will understand that the size of the sheet paper can be different from the A4 size described above. The sheet paper can be larger, smaller or different from the A4 size sheet.

Claims (15)

  In a structure for packaging sheet material, such as printing or copying paper, in which a number of sheet papers (3) are arranged in a common protective package, at least one inside the protective package (1) A structure for packaging sheet material, characterized in that there are two handles (4), which are arranged substantially surrounding all the sheet paper (3) in the package.   2. The structure according to claim 1, wherein two handles (4) are horizontally arranged inside the protective package (1) at intervals parallel to each other, and the handles are arranged for all the sheet papers ( 3) A structure characterized in that it is arranged so as to surround it.   3. The structure according to claim 1, wherein the handle (4) is arranged substantially symmetrically with respect to a central line portion of a sheet bundle (2) made of sheet paper (3), and each handle (4). ) Is located at substantially the same distance from the end of the bundle (2) as the other handle.   4. A structure according to claim 1, 2 or 3, wherein there is a carrying handle (12) surrounding the package substantially at the centerline of the package outside the protective package (1), (4) is a structure characterized by being arranged horizontally on both sides of the carrying handle (12) along a line different from the carrying handle (12).   A structure according to any one of the preceding claims, wherein the bottom plate is made of a material stronger than the material of the sheet paper (3) under the sheet bundle (2) inside the protective package (1). (5), and the bottom plate (5) is arranged between the lowermost sheet (3) of the sheet bundle (2) and the handle (4).   The structure according to any one of the preceding claims, wherein the upper part of the sheet bundle (2) inside the protective package (1) is made of a material stronger than the material of the sheet paper (3). There is a plate (6), and the upper plate (6) is arranged between the uppermost sheet (3) of the sheet bundle (2) and the handle (4).   6. The structure according to claim 1, wherein the protective package (1) consists essentially of a flexible wrapping paper (1a), the wrapping paper (1a) having an opening strip (9). The unwrapping strip (9) is placed on the wrapping paper, and in an unopened package, the unwrapping strip (9) is on one long side of the package and a set of outer folding portions at the end of the package. (1c) A structure characterized by passing. 8. The structure according to claim 7, wherein the unwrapping strip (9) circulates approximately half the circumference of the package, substantially along a line aligned with the horizontal plane of the sheet paper (3). A structure characterized by that.   The structure according to any one of the preceding claims, wherein each end of the package has at least an outer fold (1b, 1c) and an inner fold (1d, 1e), and the folds overlap at least partially. The structure is characterized in that a lifting gap is formed between the outer folding part (1b, 1c) and the inner folding part (1d, 1e).   A structure according to any of the preceding claims, wherein a plastic, polymer mixture or other similar material that retards moisture permeation is used in an on-line method during production of the wrapping paper (1a) in a paper machine. A structure characterized by being added to (1a).   A structure according to any of the preceding claims, characterized in that at most 10%, preferably at most about 5% of the total weight of the wrapping paper (1a) is made of plastic. In the structure according to any of the preceding claims, the water vapor transmission rate (WVTR) of the wrapping paper (1a) is suitably less than about 50 g / m ² / d when calculated according to ISO standard 2528: 1995. Is a structure characterized by a maximum of about 30 g / m ² / d, advantageously a maximum of about 10 g / m ² / d.   7. The structure according to claim 1, wherein the protective package (1) is a box (11) with a lid (10).   The structure according to any of the preceding claims, wherein the sheet paper (3) is substantially about 1,000 after the protective package (1) is partially or entirely removed from the periphery of the sheet bundle (2). A structure characterized in that it is arranged to be lifted using at least one handle (4) as a bundle (2) of up to 5,000 sheets (3) and put into a machine that uses said paper.   The structure according to any of the preceding claims, wherein the sheet paper (3) is substantially about 1,000 after the protective package (1) is partially or entirely removed from the periphery of the sheet bundle (2). Up to 5,000 sheets (2) of sheet paper (3) are arranged to be lifted with both hands using two handles (4) and put into the machine that uses the paper Construction.

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