JP2002205476A - Document folder made of resin and sheet for the folder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a document folder made of a resin which allows direct printing with the help of a printer such as an ink jet printer and is free from damage to be generated on a printing area during using the folder. SOLUTION: This planar rectangular document folder 2 made of a resin consisting of two sides, as sealing parts 21 and 22, extending from a single corner part A, has a printing area comprising a water- or oil-absorbing ink receiving layer formed at least on a part of an inner face. Since the ink receiving layer is formed on the inner face of the folder 2, it is possible to directly print a pattern on the printing area prior to the manufacturing of the folder 2. Further, since the ink receiving layer is formed on the inner face of the folder 2, the printing area does not suffer damage by a mar or the like on the outside of the folder 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resin document folder and a resin document folder sheet for manufacturing the resin document folder.

[0002]

2. Description of the Related Art In recent years, with the spread of computers and inkjet printers, clean printing can be easily performed at home.
With the spread of digital still cameras and home movies, it has become common for individuals to easily print images and the like, as well as to be able to do so quickly. As an inkjet medium for printing such an image, paper is generally dominant, and various types are commercially available.

[0003]

However, it is difficult to cleanly attach an ink jet medium such as paper to another molded product. Although label sheets for ink jet printers are also commercially available, there is a possibility that a problem such as peeling off or sticking of the adhesive on the molded article and contaminating the molded article after sticking to the molded article may occur. .
Further, in the case of a large area, air tends to remain between the surface of the molded article and the label sheet, and it is difficult to apply the air cleanly.

[0004] On the other hand, a method of directly printing on a molded article instead of pasting paper or the like is conceivable. is there.

SUMMARY OF THE INVENTION An object of the present invention is to provide a resin-made document folder which can be directly printed by a printer such as an ink-jet printer, and which does not cause damage to a printing surface during use.
An object of the present invention is to provide a sheet for a resin document folder for manufacturing the resin document folder.

[0006]

The resin document folder of the present invention is a flat rectangular document folder in which two sides extending from one corner are sealed, and at least a part of the inner surface has The ink receiving layer having a water absorbing property or an oil absorbing property is formed.

In the present invention, as the ink receiving layer,
Various types including a resin binder and ink absorbing particles can be used. Here, as the resin binder, for example, a polyester emulsion, a urethane emulsion, an acrylic emulsion, or the like can be employed. These resin binders are preferably used by being mixed with a solvent. Examples of the solvent include water,
Alcohol, butyl cellosolve and the like can be used.

On the other hand, the ink absorbing particles are not particularly limited as long as they are particles that absorb the attached ink and form the ink, and various organic ink absorbing particles and inorganic ink absorbing particles can be employed. Examples of the organic ink absorbing particles include cellulose powder, starch, chitosan, alginic acid, silk powder, collagen powder, and the like. In addition, examples of the inorganic ink absorbing particles include calcium carbonate, silica, and talc. The average particle size of the ink absorbing particles used is 1 to 30 μm.
m is preferable. The mixing ratio of the resin binder and the ink absorbing particles is not particularly limited as long as good ink receiving layer strength and ink absorbing performance are exhibited. Binder = 40/60 to 90/10.

Further, as the ink receiving layer, a resin having an ink absorbing ability, a collagen (gelatin) having a water absorbing property, or the like can be used. Examples of the resin having an ink absorbing ability include polyvinyl alcohol and sodium acrylate. When a resin or collagen having an ink absorbing ability is used, only the resin or collagen can be used alone. However, in order to prevent surface blocking, a filler such as silica is added in an amount of 0.1 to 5% by weight. preferable. Note that the ink receiving layer only needs to be present at least on a part of the inner surface of the resin document folder, and its position, area, and the like can be appropriately set according to the use and the like.

The ink-receiving layer of the present invention comprises a resin coater and ink-absorbing particles mixed in the above ratio, or a resin having ink-absorbing performance, on a base sheet before being formed into a document folder, a comma coater, a knife coater, It is formed by coating with a die coater or printing such as screen printing.

At this time, if the thickness (at the time of drying) of the ink receiving layer exceeds 2.0 mm, drying after coating may be delayed and productivity may be reduced. Moreover, the thickness of the folder is too large to keep the flexibility of the resin document folder, and the possibility that the ink receiving layer is peeled off when the folder is bent increases. More preferably, it is 0.1 mm or less (at the time of drying), especially 0.005 mm (5 μm) to
Even more preferably, it is 0.05 mm. In addition,
When the thickness is less than 0.005 mm, the number of ink-absorbing components with respect to the amount of ink is small, so that the water absorption and oil absorption become insufficient, the drying time becomes longer, and the possibility of bleeding after printing increases.

The raw material resin of the resin base sheet constituting the document folder is not particularly limited, and various resins having rigidity and durability depending on the use and the like can be selected. , Polypropylene resin, polyethylene resin, vinylidene chloride resin and the like can be employed, but it is preferable to employ a polyolefin-based resin from the viewpoint of environmental suitability, and it is particularly preferable to employ a polypropylene resin in terms of resin hardness, strain, and the like. .

According to the present invention, since the ink receiving layer is formed on at least a part of the inner surface of the resin document folder, a pattern is printed on the ink receiving layer by a printer or the like before the resin document folder is manufactured. This makes it possible to print a pattern or the like directly on the resin document folder. Further, since the ink receiving layer is formed on the inner surface of the folder, there is no possibility that the printed surface is damaged due to abrasion on the outside of the folder during use.

In the above, the above-mentioned resin document folder may have the following structure. (1) Two sheets of the resin document folder forming the resin document folder can be joined together along the two edges forming the sealing portion. The joining may be performed using a welding sealer for welding a sheet for a document folder made of resin, or a margin portion coated with an adhesive is formed along each edge, and two sheets are formed at the margin portion. May be joined together. Further, the bonding by the glue margin may be performed using an adhesive or a double-sided adhesive tape. According to such a configuration, the size of the resin document folder sheet can be set to the limit size that can be printed by the printer, so that a large resin document folder can be manufactured.

(2) One of the two sides of the sealing portion is a fold formed on the base sheet constituting the resin document folder, and the sealing portion is orthogonal to the fold. Can be configured by joining the edges of the overlapped base material sheets. For joining the edges of the base sheet, the same method as in the above (1) can be adopted.
According to such a configuration, since one sealing portion is formed by a fold, the sheet for the resin document folder for manufacturing the resin document folder can be one continuous sheet at the fold portion. By passing the resin-made document folder sheet once through a printer or the like, a pattern or the like can be printed on the ink receiving layer, and the joining operation of the sealing portion can be omitted.

In the above configuration (2), it is preferable that the fold of the sealing portion is formed as a sealing portion on the short side of the plane rectangle of the resin document folder. Here, for example, in the case of a resin document folder for storing A4 paper,
The sealing portion on the 210 mm side, which is the short side direction of the four sheets, is formed by a fold. In the case of a resin document folder for storing A3 paper, the sealing portion on the 298 mm side is formed by the fold. With this configuration, the short side of the resin document folder sheet can be passed through a feeder such as a printer, so that the length of the sealing portion on the long side can be freely set along the sheet feeding direction. You can also create a large tall resin document folder.

It is preferable that the sealing portion other than the above-mentioned fold is sealed by a glue margin applied with an adhesive. With such a configuration, the long side of the base sheet can be sealed by the adhesive margin applied with the adhesive, so that the resin document folder can be easily manufactured without using a device such as a welding sealer. can do.

Further, the sheet for a resin document folder of the present invention is a sheet for a resin document folder for producing the resin document folder of the above (2), wherein one of the two side sealing portions is provided. And a water-absorbing or oil-absorbing ink-receiving layer formed inside the folds of the base sheet. According to such a sheet for a resin document folder, it is suitable for manufacturing a resin document folder having the functions and effects described in (2) above. Also,
The resin-made document folder sheet of the present invention can further add the limitation described in the above (2), whereby the
The same operation and effect as the operation and effect described in (2) can be enjoyed.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. 1 to 4 show a resin document folder 2 according to the first embodiment of the present invention. As shown in FIG. 1, the resin document folder 2
Two sides extending from one corner A are formed in a planar rectangular shape having sealing portions 21 and 22. Two-sided sealing portion 21,
Out of 22, the sealing portion 21 on the short side of the flat rectangular shape serving as one sealing portion is formed by a fold obtained by bending a resin sheet 20 which is a sheet of a resin document folder. In addition, the sealing portion 22 on the long side extending in the direction orthogonal to the sealing portion 21 on the short side, the resin sheets 20 folded and superposed by the folds of the sealing portion 21
It is formed by bonding at the glue margin 26.

As shown in FIG. 2, a printing surface 24 made of an ink receiving layer 20A is formed on the inner surface of the resin document folder 2 having such a structure in which documents are stored. The resin sheet 20 includes a base sheet 20B and a water-absorbing or oil-absorbing ink-receiving layer 20A formed on the entire surface of the base sheet 20B. The base sheet 20B is provided. In the present embodiment, the material of the base sheet 20B is polypropylene. Further, the ink receiving layer 20A is formed by applying and drying a coating agent in which a resin binder and ink absorbing particles are mixed at a predetermined ratio, and is applied to the entire base sheet 20B to form the printing surface 2A.
4.

The resin sheet 20, which is a sheet for a resin document folder for manufacturing the resin document folder 2 configured as described above, is manufactured as follows. First, the raw material resin is formed into a sheet by T-die extrusion or the like (not shown) to obtain a base sheet 20B. On one surface of the formed base sheet 20B, a coating agent prepared by blending a resin binder and ink absorbing particles at a predetermined ratio is applied by a coater such as a knife coater, and the resin sheet 20 having the ink receiving layer 20A is coated. And

At this time, the mixing ratio of the resin binder and the ink absorbing particles is, for example, in a range of 40/60 to 90/10 by weight ratio of ink absorbing particles / resin binder. The thickness of the ink receiving layer 20A is 0.005 to 0.2.
mm, and the total thickness of the resin document folder 1 is set to 0.05 to 2 mm.
Apply so that

Thereafter, the resin sheet 20 is cut into the developed shape shown in FIG. When cutting, the resin sheet 2
A fold 21A that constitutes the sealing portion 21 is formed at a substantially central portion of 0. One of the long side edges of the resin sheet 20, which is defined by the fold 21 </ b> A, is provided with a glue margin 26 so as to protrude outward in the short side direction of the resin sheet 20.
Is formed. In the present embodiment, the width W1 of the fold 21A is set so that the pattern can be printed using a printer that is widely used in ordinary households, for example, a printer that can print on paper up to JIS A4 size. 21
0 mm.

The procedure for assembling the resin sheet 20 to form the resin document folder 2 is as follows. First, as shown in FIG. 4, the resin sheet 20 is set on the feeder of the inkjet printer 3 so that a pattern can be printed on the printing surface 24, and a predetermined pattern is printed on the resin sheet 20. Next, the glue margin 2 of the resin sheet 20 on which a predetermined pattern is printed
6, a double-sided tape is applied to the printing surface 24 side, and the adhesive margin portion 26 is folded toward the printing surface 24 side. Further, the fold 21A of the sealing portion 21
, So that the printing surface 24 is on the inside, and the long side edges of the overlapping resin sheets 20 are adhered to each other with the double-sided tape of the adhesive margin portion 26 to form the sealing portion 22.

According to the first embodiment described above, the following effects can be obtained. (1) An ink receiving layer 2 is provided on the inner surface side of the resin document folder 2.
Since 0A is formed, a pattern or the like can be printed directly on the resin-made document folder 2 by printing a predetermined pattern on the resin sheet 20 by the ink jet printer 3 or the like. In addition, since the ink receiving layer 20A is formed on the inner surface of the resin document folder 2, the printed surface is not damaged by abrasion on the outside of the folder during use.

(2) By forming one sealing portion 21 of the resin-made document folder 2 as a fold, the resin sheet 20 for manufacturing the resin-made document folder 2 can be formed as one continuous sheet at the fold. Therefore, the resin sheet 20
Can be printed on the ink receiving layer 20A only by passing it once through the ink jet printer 3, and the bonding operation of the sealing portion 21 can be omitted by the fold.

(3) The base sheet 2
Since the long side of 0B is sealed, the resin document folder 2 can be created more easily than sealing the base sheet 20B by welding or the like.

(4) Sealing portion 2 on short side of resin sheet 20
1 is formed as a fold of the resin sheet 20, so that the short side of the resin sheet 20 can be passed through the feeder of the inkjet printer 3, so that the long side along the feeding direction of the resin sheet 20 is sealed. The length of the section can be freely set, and a tall resin document folder can be created freely. In particular, in the case of this example, since the sealing portion on the 210 mm side, which is the short side direction of JIS A4, is formed by the fold 21A, it can be applied to various inkjet printers 3 including a small printer. (5) By using polypropylene as the material of the base sheet 20B, polypropylene is light, durable, excellent in heat resistance, transparency and chemical resistance, and also excellent in environmental adaptability. A resin document folder 2 which is durable, has excellent heat resistance, transparency and chemical resistance, and has excellent environmental adaptability can be created.

Next, a second embodiment of the present invention will be described. In the following description, the same reference numerals are given to the same portions as those already described or the members, and the description is omitted. In the first embodiment, the resin document folder 2 is configured such that one sealing portion 21 is formed as a fold formed on the resin sheet 20 and the other sealing portion 22 is formed by gluing the superposed resin sheets 20 together. It was configured by bonding at the substitute portion 26. Further, the ink receiving layer 20A in the first embodiment is formed on the entire inner surface of the base sheet 20B.

On the other hand, as shown in FIG. 5, the resin document folder 4 according to the present embodiment has both the sealing portions 41 and 42 extending from the corner A of the resin document folder 4.
The difference is that the two resin sheets 40A and 40B are formed by heat welding the edges. The difference is that the printing surface 44 made of the ink receiving layer 20A is formed only on the resin sheet 40A constituting the resin document folder 4, and the ink receiving layer is not formed on the resin sheet 40B. Resin sheet 40 constituting resin document folder 4
A and 40B have substantially the same planar shape, and a printed surface 44 is formed on one resin sheet 40A. The printing surface 44 is formed at a position inward from the edge of the resin sheet 40A so as not to hinder the welding between the resin sheets 40A and 40B. In addition, the resin sheet 4
The materials of 0A and 40B, the manufacturing method, the material of the ink receiving layer constituting the printing surface 44, and the method of applying the resin sheet 40A are the same as those in the first embodiment.

When manufacturing a resin document folder 4 by printing a predetermined pattern on the printing surface 44 with a printer or the like, first,
The resin sheet 40A is set on an ink jet printer or the like, and a desired pattern is printed. Next, the resin sheet 40A
The resin sheet 40B is overlapped so as to cover the printed surface 44, and the resin sheets 40A and 40B are welded along an edge extending from the corner A by a device such as a general-purpose welding sealer to form a sealing portion 41. , 42 are formed.

According to the resin-made document folder 4 according to the second embodiment, the following effects are obtained in addition to the effects (1) and (5) of the first embodiment. . (6) Since the printing surface 44 composed of the ink receiving layer 20A is formed only on a part of the one base sheet 40A and is not formed on the other base sheet 40B, it is stored in the resin document folder 4. Confirmation of the contents of the document
It can be easily performed from the outside by utilizing the transparency of B. In addition, the ink receiving layer 20A can easily confirm stored documents by imparting appropriate transparency. In this case, the hiding ratio of the ink receiving layer 20A is desirably 90% or less, and more desirably 85% or less. (7) The two resin sheets 40A and 40B serving as the sheets for the resin document folder are overlapped and welded at the edges to form the resin document folder 4, thereby reducing the size of the resin sheet 40A. Since the size can be set to the limit size that can be printed by the printer, a large-sized resin document folder can be manufactured.

It should be noted that the present invention is not limited to the above embodiments, and modifications and improvements as long as the object of the present invention can be achieved are included in the present invention. In the first embodiment, the printing surface 24 made of the ink receiving layer 20A is used.
Was formed on the entire resin document folder 2,
In other words, it is only necessary that at least a portion to be printed by a printer or the like is formed, and its position, area, and the like can be arbitrarily set.

Further, the ink receiving layer 20A is formed of a coating agent in which a resin binder and ink absorbing particles are blended, but is not limited to this. That is, it can also be formed by using a resin having ink absorption performance. When using a resin having such an ink absorption performance, an inorganic filler is used in an amount of 0.1 to prevent blocking on the surface.
-5 wt% can also be added.

Further, although the patterns on the printing surfaces 24 and 44 are formed by printing with an ink jet printer, the present invention is not limited to this, and other printers may be used. For example, by adjusting the heat resistance of the ink receiving layer, printing by a thermal transfer printer becomes possible. In the first embodiment, the adhesive margin 26 is formed only on one side in the direction intersecting the fold. However, the present invention is not limited to this. 3 extending from one corner
It may be a resin document folder whose side is a sealing portion.

In the first embodiment, the margin portion 26
Is the glue margin 2 of the resin sheet 20 on which a predetermined pattern is printed.
6. A double-sided tape was attached to the printing surface 24 of No. 6 and bonded,
However, the present invention is not limited to this, and a double-sided tape may be attached to the back side of the printing surface 24 of the glue margin portion 26, and the glue margin portion 26 may be adhered. Furthermore, in the first embodiment, when a predetermined pattern is printed on the resin sheet 20 by the inkjet printer 3, the printing is performed from the short side direction. However, the present invention is not limited to this.
Printing may be performed from the long side direction.

In the first embodiment, the sealing portion 2
2, the sealing margins 26 are formed. In the second embodiment, the sealing portions 41 and 42 are formed by welding. However, the present invention is not limited to this. That is, when forming the sealing portion 22 according to the first embodiment, heat welding may be used, and two resin sheets as in the second embodiment are overlapped and the edges are joined. At this time, the sealing portion may be constituted by the glue margin portion. In addition, the specific structure, shape, and the like when implementing the present invention may be other structures within a range that can achieve the object of the present invention.

[0038]

EXAMPLES Hereinafter, the present invention will be described more specifically with reference to examples. Resin document folder 2 according to the first embodiment
Was prepared using the materials and procedures described below. (1) Preparation of ink receptive coating agent Resin binder (urethane emulsion): 50 g of Superflex 460 (Daiichi Kogyo Seiyaku), ink absorbing particles: 80 g of protein powder (Idemitsu Techno Fine)
(Average particle size: 6 μm) and 60 g of water were mixed / stirred to completely disperse the protein powder to obtain a coating agent.

(2) Preparation of Ink Receiving Layer A transparent super pure array sheet (Idemitsu Unitech) was selected as the base sheet 20B, and the entire surface of the sheet was subjected to easy adhesion processing (primer treatment). Base sheet 20B
The coating agent prepared in (1) was applied to the entire surface of the easily-adhesive processed surface with a comma coater, and a 0.035 mm thick ink receiving layer 20 was applied.
A 0.235 mm polypropylene sheet on which A was formed was prepared. (3) Production of resin-made document folder sheet The polypropylene sheet produced in (2) is cut to form the resin sheet shown in FIG. Completed the document folder sheet.

(4) Printing on a Folder and Assembling of the Folder Images captured by a personal computer are printed on a sheet for a resin document folder prepared in (3) using an ink jet printer (DeskJet 720C: manufactured by Japan Hewlett-Packard Co., Ltd.). After printing, the printing surface 24 side was folded inward, and the sealing portion 22 was formed with a double-sided tape. (5) Effect By observing the obtained resin document folder, it was confirmed that the image printed from the outer surface (the base sheet 20 side) could be clearly confirmed. Further, since the printing surface 24 was folded inward, it was confirmed that the printing surface 24 was glossy when viewed from the outer surface.

[0041]

According to the resin document folder of the present invention as described above, since the ink receiving layer is formed on at least a part of the inner surface of the resin document folder, a pattern or the like is printed directly on the resin document folder. be able to. Further, since the ink receiving layer is formed on the inner surface of the folder, it is possible to prevent the printed surface from being damaged due to abrasion on the outside of the folder during use.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view illustrating a structure of a resin document folder according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view illustrating a structure of a resin document folder sheet for manufacturing the resin document folder in the embodiment.

FIG. 3 is a developed plan view showing a sheet for a resin document folder in the embodiment.

FIG. 4 is a schematic perspective view showing a procedure for printing on a resin document folder sheet using the ink jet printer in the embodiment.

FIG. 5 is a schematic perspective view illustrating a structure of a resin document folder according to a second embodiment of the present invention.

[Explanation of symbols]

 2, 4 Resin document folder 20, 40 Sheet for resin document folder 20A Ink receiving layer 20B Base sheet 21, 22, 41, 42 Sealing portion 26 Glue margin A Corner

Claims (8)

[Claims] 1. A flat and rectangular resin document folder in which two sides extending from one corner are sealed portions, wherein at least a part of an inner surface has an ink receiving layer having water absorbency or oil absorbency. A resin document folder characterized by being formed. 2. The resin-made document folder according to claim 1, wherein one of the two-sided sealed portions is formed on a base sheet constituting the resin-made document folder. A resin document folder characterized by a crease. 3. The resin-made document folder according to claim 2, wherein the fold is formed as a sealing portion on a short side of a flat rectangular shape. 4. The resin-made document folder according to claim 2, wherein, of the two-sided sealing portions, the sealing portion other than the fold is sealed by a glue margin applied with an adhesive. A resin document folder which is stopped. 5. The resin document folder according to claim 1, wherein both of the sealing portions on the two sides join two resin document folder sheets constituting the resin document folder. A resin document folder characterized by being constituted. 6. A sheet for a resin document folder for manufacturing a resin document folder having a rectangular shape having two sides extending from one corner and having a sealing portion, wherein the two sides are sealed. A base sheet on which a fold constituting one sealing portion is formed, and a water-absorbing or oil-absorbing ink-receiving layer formed inside the fold of the base sheet. Sheet for resin document folder. 7. The sheet for a resin document folder according to claim 6, wherein the fold is formed along a short side direction of the base sheet. 8. The sheet for a resin document folder according to claim 6, wherein an edge of the base sheet corresponding to a sealing portion other than a fold among the sealing portions on the two sides. A resin sheet for a document folder, wherein a margin portion coated with an adhesive is formed.