JPH07309086A - Sheet for concealed information-holding material - Google Patents

Abstract

PURPOSE:To provide a sheet for concealed information-holding material which has watertightness solving various problems owing to water wetting. CONSTITUTION:Sheets are freely separably bonded to each other by various superimposition modes such as threefold, twofold, superimposition by cutting, superimposition of other materials with each other, etc., and besides concealed information is provided onto a specific face of superimposed faces to make a sheet 1 for a concealed information-holding material. By providing a watertightness-treated layer 9 on a specific face of the base material sheet paper 2 composing the sheet for the concealed information-holding material or by making the base material sheet itself a member having watertightness, the sheet for the concealed information-holding material having watertightness is composed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to three-fold, two-fold,
Water resistance was imparted to the concealment information carrying sheet, which was peelably adhered in various superposition modes such as cutting and stacking, or overlapping different bodies, and which provided concealment information in a predetermined portion of the superposition surface. It relates to a sheet for concealing information carrier having water resistance, and more specifically, in a sheet for concealing and concealing concealment information, a water resistant treatment layer is provided on a predetermined surface of a base sheet constituting the sheet, or
The present invention relates to a hidden information carrier sheet having water resistance by forming a base sheet itself from a water resistant member. In the present invention, the hidden information carrier sheet refers to a postcard, a notice, a card or the like, which conceals and notifies the information.

[0002]

2. Description of the Related Art Recently, many kinds of concealed information carriers have been known, especially as postcards, for the purpose of concealing information or increasing the amount of information to be written. Then, the base sheet constituting this is usually a general foam paper having no water resistance, that is, a high-quality paper or the like, and there is no base sheet having water resistance like the present invention. That is, until now, there is no hidden information carrier having water resistance.

[0003]

Therefore, in the prior art, when handling this type of hidden information carrier, it is necessary to pay sufficient attention to water getting wet, and should the hidden information carrier be mailed or transferred. Alternatively, during storage, if it gets wet due to rain or an accident, water permeates from the exposed surface side of the base sheet that constitutes the concealed information holder, causing curl in the concealed information holder, which makes handling inconvenient. Or, the adhesive effect of the peelable adhesive is weakened, the adhesive surface is peeled carelessly, and hidden information is exposed, and further, information is lost due to breakage of the base sheet during peeling. There was also. Then, in view of such a situation, an object of the present invention is to provide a sheet for concealed information carriers having water resistance that solves various problems due to water wetting.

[0004]

In order to achieve the above object, the present invention provides a water resistant treatment layer on a predetermined surface of a base sheet of a hidden information carrier sheet, or a base sheet itself is water resistant. A sheet for a hidden information carrier having water resistance by being constituted by a member having properties.

[0005]

In the base sheet constituting the concealed information carrier, the concealed information carrier is provided by providing a water resistant treatment layer on a predetermined surface of the paper of the base sheet or by constructing the base sheet itself with a water resistant member. Even if it gets wet due to rain or accident during the mailing, transportation or storage of, the penetration of water from the exposed surface side of the base sheet of the hidden information carrier is prevented, and the hidden information carrier is curled or peeled off.
Prevent the occurrence of tears.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the hidden information carrier sheet of the present invention is applied to a postcard will be described in detail below with reference to the accompanying drawings. Here, FIG. 1 is a schematic cross-sectional view of a double-fold postcard forming sheet comprising a base sheet having a water resistant treatment layer according to an embodiment of the present invention, and FIG. 2 is a tri-fold postcard comprising a base sheet having a water resistant treatment layer. 4 is a schematic cross-sectional view of a forming sheet, FIG. 3 is a schematic cross-sectional view of a double-fold postcard forming sheet using a base sheet as another embodiment, which is a synthetic paper, and FIG.
Is a schematic cross-sectional view of a folded postcard forming sheet in which the base sheet according to another embodiment is a wet paper strength additive-added paper.
FIG. 5 is a schematic plan view of the surface of a tri-fold postcard forming sheet constituted by the base sheet provided with the water resistant treatment layer of FIG.
FIG. 6 is a schematic plan view of the rear surface of the same tri-fold postcard forming sheet,
FIG. 7 is a schematic perspective view showing a three-fold postcard formed from the same three-fold postcard forming sheet, FIG. 8 is a schematic plan view of the surface of the two-fold postcard forming sheet constituted by the base sheet of FIG. 3, and FIG. 9 is the same. FIG. 10 is a schematic plan view of the back surface of the folded-postcard forming sheet, and FIG. 10 is a schematic perspective view showing a folded-postcard formed from the folded-postcard forming sheet.

A sheet 1 for concealed information carrier for a folded postcard shown in FIG. 1, which is an embodiment of the present invention, is a base sheet 2
By folding perforation 3, postcard paper piece 4 of almost the same size
And the postcard blank paper piece 5 is divided into two paper pieces and folded in half. The base sheet 2 is made of high-quality paper, and the upper surface thereof, that is, the entire surface exposed when the base sheets 2 are laminated and adhered, is coated with a mixture of a water-proofing agent and a binder. A treatment layer 9 is provided, while a peelable adhesive layer 6 is provided over the entire lower surface thereof. Then, on the surface of the water resistant treatment layer 9, the postcard paper sheet 4 is provided with a print / printing section 10 for address information, and the postcard paper sheet 5 is provided with a print / printing section 11 for supplementary information such as an explanatory note. Printed / printed portions 7 and 8 of hidden information are provided on the surface of each adhesive layer 6.

Next, in the concealed information carrier sheet 21 for tri-fold postcards shown in FIG. 2, the base sheet 22 is formed by folding perforations 23 and 24 to have a postcard paper piece 25, a postcard paper piece 26 and a postcard paper piece 26 of approximately the same size. It is formed by partitioning into three pieces of postcard bottom paper pieces 27, and is folded in three in a Z shape. The base sheet 22 is made of high-quality paper, and a water-proofing agent is provided on the entire front and back surfaces. A water resistant treatment layer 28 is provided by coating a mixture of a binder and a binder. And the postcard piece 25
On the water resistant layer 28 on the upper surface, the address information is printed and printed.
On the other hand, the printing unit 29 has
A peelable adhesive layer 30 is provided, and on the surface of the adhesive layer 30, a print printing / printing section 31 of hidden information is provided. Also, peelable adhesive layers 30 are provided on the water resistant treatment layers 28 on the upper and lower surfaces of the postcard paper pieces 26, and concealment information is printed and printed on the surface of each adhesive layer 30.
Printing units 32 and 33 are provided. Further, the water-resistant treatment layer 28 on the upper surface of the postcard bottom paper piece 27 also has a peelable adhesive layer 3
0 is provided, and on the surface of the adhesive layer 30, a print printing / printing section 34 of hidden information is provided. On the other hand, on the surface of the water resistant treatment layer 28 on the lower surface thereof, a print printing / printing section 35 for providing supplementary information such as a description is provided.

Water resistant treatment layers 9 and 2 in these examples
No. 8 is formed by coating a mixture of a polyamide urea formaldehyde resin as a waterproofing agent and a polyvinyl alcohol as a binder from the viewpoint of excellent printability such as ink setting property and blistering resistance. The present invention is not limited to this combination, and examples of the waterproofing agent include glyoxal, formaldehyde, dialdehyde starch, melamine / formaldehyde resin, urea / polyamide resin, ketone resin, polyamide / epichlorohydrin resin, glycerol poly Glycidyl ether resin, ammonium zirconium carbonate, satin white, borax and the like. On the other hand, as the binder, for example, latex, starch, protein or the like is used. In these coated mixtures, the aldehyde group of the waterproofing agent,
A functional group such as a methylol group and a functional group such as a carboxyl group and a hydroxyl group of a binder undergo a crosslinking reaction to improve water resistance by making it insoluble in water. It prevents the permeation of water from the exposed side of the base material.

In another embodiment of the present invention, a sheet 41 for concealed information carrier for double-folded postcards shown in FIG. 3 is a base sheet 42 of synthetic paper, and folding perforations 4 are used.
3, the postcard upper paper piece 44 and the postcard lower paper piece 45 having substantially the same size are sectioned and formed into two paper pieces, which are folded in two. A peelable adhesive layer 46 is provided on the entire lower surface of the base sheet 42. Further, on the surface of the adhesive layer 46, concealment information is printed / printed by the printing unit 4.
7, 48 are provided. On the other hand, on the upper surface thereof, the postcard paper piece 44 is provided with a print / printing section 49 for address information, and the postcard bottom paper piece 45 is provided with a print / printing section 50 for supplementary information such as an explanatory note.

In this embodiment, the base sheet 42 is a commercially available synthetic paper (made by YUPO / Oji Yuka Synthetic Paper Co., Ltd.) manufactured by a biaxially stretched film molding method after blending additives with polypropylene resin as a main raw material. ) Is used. However, the present invention is not limited to this, and other synthetic papers having water resistance can also be used. For example,
A non-stretched film molding method or a biaxially stretched film molding method in which a filler and additives such as a stabilizer and a dispersant are added to a synthetic resin and mixed, and melt-kneaded in an extruder to form a film. , A surface coating method in which a white pigment is applied to the surface of a plastic film such as polyvinyl chloride, polystyrene, or polyester in the same manner as ordinary coated paper, and synthetic binder is used as a raw material and a binder or the like is added. , Synthetic pulp paper and the like which are usually made. These synthetic papers are made of raw materials that do not absorb water, so they are strong even when wet.
The dimensions do not change, and tears and expansions do not occur,
In consideration of printing / printing, preferably, those having excellent printability such as smoothness, opacity, and whiteness are preferable, and more preferably oil resistance, chemical resistance, so as to withstand other adverse environments. It is preferable that it has excellent resistance to folding and other resistance.

In another embodiment of the present invention, a sheet 51 for concealed information carrier for double-fold postcards shown in FIG. 4 has a base sheet 52 of a wet paper strength enhancer-added sheet, With the perforations 53, the postcard upper paper piece 54 and the postcard lower paper piece 55 having substantially the same size are partitioned and formed into two paper pieces.
This is folded in two. A peelable adhesive layer 56 is provided on the entire lower surface of the base sheet 52, and concealment information print / printing portions 57 and 58 are provided on the surface of the adhesive layer 56. on the other hand,
On the upper surface thereof, a postcard piece 54 is provided with a print / printing section 59 for address information, and a postcard piece 55 is provided with a print / printing section 60 for additional information such as an explanatory note.

In the present embodiment, the wet paper strength enhancer-added paper is used as the paper for the base sheet 52. The wet paper strength enhancer-added paper is used for the papermaking process, such as urea resin, melamine resin, or polyamidoamine. Addition of epichlorohydrin resin improves the wet strength when dry paper is soaked in water.Generally, it is slightly inferior to synthetic paper in water resistance and other resistance, but it is functionally sufficient. It can be put to practical use. Further, in the present invention, a water resistant treatment layer may be additionally provided on the paper of the base sheet having water resistance. For example, when a wet paper strength additive-added paper is used for the paper of the base sheet, the water resistant treatment layer is used. May be additionally provided to further enhance water resistance.

The adhesive layer in each of the above-mentioned embodiments includes:
Usually, it is possible to bond without adhering under certain conditions, and it is possible to use an adhesive that can be peeled off even after adhering without impairing the printed print and printing performed, conventional pressure-sensitive adhesive base , For example, natural rubber latex obtained by copolymerizing natural rubber with styrene and styryl methacrylate, and a fine particle filler having no affinity for the adhesive base,
For example, those prepared by blending silica, calcium carbonate, titanium oxide, kaolin, glass powder and the like are suitable. Further, the adhesive base is not limited to the pressure sensitive property, and a usual heat sensitive or wettable adhesive can be used.

FIGS. 5 to 10 are developed plan views of postcards in two-fold and three-fold forms created by the hidden information carrier sheet of the present invention, and their preparation states. FIG. 5 to FIG. FIG. 7 is a tri-fold postcard including a base sheet provided with the water resistant treatment layer of FIG. 2, and FIGS. 8 to 10 are bi-fold postcards using the base sheet of FIG. 3 as synthetic paper. The postcard forming sheet of each of these embodiments has address information on the front surface of the postcard upper paper piece and supplementary information on the back surface of the postcard lower paper piece in the unfolded state of the forming sheet by a printer (not shown). In addition to being printed on the print / printing section, the concealed information is printed and printed on the postcard top piece, postcard middle piece and postcard bottom piece for tri-fold postcards, and postcard top piece and postcard bottom piece for bi-fold postcards. After the concealment information is printed, the concealment information is externally applied by applying pressure, which is the adhesion condition of the peelable adhesive, by folding the perforation perforations so that the print surfaces of the concealment information overlap each other. It becomes invisible and is posted in the same manner as a normal postcard.

[0016]

INDUSTRIAL APPLICABILITY According to the present invention, in the base sheet constituting the hidden information carrier, a water resistant treatment layer is provided on a predetermined surface of the base sheet, or the base sheet itself is made of a member having water resistance. By doing so, even if the concealed information carrier is mailed, transferred, or stored in water due to an accident during storage, it prevents the permeation of water from the surface side of the base sheet of the concealed information carrier, Therefore, curling occurs as in the past and handling is inconvenient, the adhesive effect of the peelable adhesive is weakened and the adhesive surface is inadvertently peeled to reveal concealment information, or the base sheet at the time of peeling The information is not lost due to the destruction of the, and the effect that the precaution against water wetting becomes unnecessary in handling.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view of a folded postcard forming sheet including a base sheet provided with a water resistant treatment layer.

FIG. 2 is a schematic cross-sectional view of a tri-fold postcard forming sheet including a base sheet provided with a water resistant treatment layer.

FIG. 3 is a schematic cross-sectional view of a half-folded information concealing postcard forming sheet using a base sheet as synthetic paper.

FIG. 4 is a schematic cross-sectional view of a folded postcard forming sheet in which a base sheet is a wet paper strength additive-added sheet.

5 is a schematic plan view of the surface of a tri-fold postcard forming sheet constituted by a base sheet provided with the water resistant treatment layer of FIG. 2;

FIG. 6 is a schematic plan view of the back surface of the formed sheet.

FIG. 7 is a schematic perspective view showing a tri-fold postcard created from the forming sheet.

FIG. 8 is a schematic plan view of the surface of a folded postcard forming sheet formed by the water resistant substrate sheet substrate of FIG. 3;

FIG. 9 is a schematic plan view of the back surface of the formed sheet.

FIG. 10 is a perspective view showing a folded postcard created from the same forming sheet.

[Explanation of symbols]

1, 21, 41, 51 ... Sheet for concealed information carrier of the present invention 2, 22, 42, 52 ... Base sheet 3, 23, 24, 43, 53 ... Folding perforation 4, 25, 44, 54 ... Postcard Top paper piece 26 ... Postcard paper piece 5, 27, 45, 55 ... Postcard bottom paper piece 6, 30, 46, 56 ... Peelable adhesive layer 7, 8, 31, 32, 33, 34, 47, 48, 57,
58 ... Hidden information print / printing section 9, 28 ... Water-proof treatment layer 10, 29, 49, 59 ... Address information print / printing section 11, 24, 35, 50, 60 ... Additional information print / printing Department

Claims (4)

[Claims] 1. It is possible to adhere to at least a part of the surface of the base sheet, which is not usually adhered, but is given a certain condition.
A concealment information carrier sheet comprising an adhesive layer made of an adhesive capable of peeling after adhesion, wherein the base sheet has water resistance. 2. The water-resistant substrate sheet is coated on a predetermined surface of a paper with a water-resistant treatment layer made of a mixture of a water-proofing agent and a binder. Concealed information carrying sheet. 3. The hidden information carrier sheet according to claim 1, wherein the base sheet having water resistance is a synthetic paper. 4. The hidden information carrier sheet according to claim 1, wherein the base sheet having water resistance is a wet paper strength additive-added paper.