JP3107793U - Crimped postcard - Google Patents

Abstract

In a crimped postcard, there is a drawback that the bonding strength of temporary bonding increases with the passage of time after temporary bonding, and peeling becomes difficult. Provided is a crimped postcard that suppresses an increase in adhesive strength over time.
In order to make a pressure-bonded postcard, the present invention prints in a state where the paper is unfolded, and then folds the paper and temporarily bonds it so that it can be easily peeled off. A layer that can be peeled off by a mechanical force is locally provided. The peelable layer contains pigment, metal powder, dye powder, and the like, includes paraffins, and is printed on paper with ink, and then the peelable layer or the concealing layer 8 is formed. Further, the uppermost layer surface 1 to (and) the lowermost layer surface 7 of the temporarily bonded pressure-bonded postcard are smaller than the other layers to facilitate peeling, and the number of sheets to be folded is 2 to 10.
[Selection] Figure 7

Description

  The present invention relates to a pressure-bonded postcard, and more particularly to a pressure-bonded postcard in which a change in the peelability of the pressure-bonded postcard is reduced over time.

Conventionally, concealed postcards have been widely used for personal invoices, reminders, and test pass / fail notices. For example, after printing information to be concealed, it is known to insert an adhesive film on both sides, fold and crimp it, and print an address / name on the surface to make a concealment postcard (Patent Document 1). Also, in concealment postcards that are composed of overlapping layers, a print layer is provided on top of that to prevent characters from being disturbed or transferred when the confidential information printed by a dot impact printer is peeled off. A method of printing with an impact printer is also disclosed (Patent Document 2). There is also an example of a round-trip postcard containing hidden data (Patent Document 3).
In addition, a method of covering and concealing a hit / off portion with a releasable ink in a lottery or the like is widely employed (Patent Document 4) (Patent Document 5).

JP-A-3-162996 JP-A-8-112985 Japanese Utility Model Publication No. 6-75771 Japanese Utility Model Publication No. 3-101676 No. 7-1666

Concealment postcards are widely used for personal invoices, reminders, test pass / fail notifications, etc., and postage costs are the same as regular postcards, regardless of whether they are crimped or concealed. Although it is excellent, there are problems such as difficulty in re-peeling or peeling due to changes over time.

The contents of the concealed postcard cannot be viewed while temporarily attached during transportation. However, after the recipient receives the concealed postcard, the contents of the concealed postcard can be viewed relatively easily by peeling off the temporary postcard. It needs to be possible. However, the performance required during transportation and the performance required after arrival are contradictory, and with the passage of time after temporary bonding, there is a drawback that the bonding strength of temporary bonding increases and peeling becomes difficult. The present inventor has found that the problem can be solved by creating a part that is not a temporary adhesive part as a method for suppressing an increase in adhesive strength with time, and has reached the present invention.

That is, the pressure-bonded postcard of the present invention has the following characteristics.
(1) In order to obtain a pressure-bonded postcard, printing is performed in a state where the paper is unfolded, and then the paper is folded and mechanically bonded to the surface to be overlapped by mechanical force such as friction. According to the present invention, a layer that can be peeled off is provided locally.
(2) In (1), the peelable layer contains a pigment, metal powder, dye powder, or the like to form a peelable concealing layer.
(3) In (1) and (2), printing is performed on paper with ink, and then a peelable layer or a concealing layer is formed.
(4) In (1) and (2), the peelable layer contains paraffins.
(5) In (1) and (2), the uppermost layer (addressed writing surface) to (and) the lowermost layer (backside of the compressed postcard) of the temporarily bonded pressure-bonded postcard is made smaller than the other layers to facilitate peeling. Features.
(6) In (1) and (2), the number of sheets to be folded is 2 to 10 sheets.
(7) In (1) and (2), the number of sheets to be folded is three.

The paper used for the pressure-bonded postcard of the present invention is a paper produced from ordinary cellulosic pulp. And since it is the structure where several sheets were laminated | stacked in the crimping | compression-bonding postcard, thin paper is preferable. That is, it is preferable that 3 to 4 sheets are stacked to obtain a normal postcard thickness.
As a paper material, cellulose is preferable. This is because the printability is better than that of polyolefin. Synthetic paper using a film is not preferred because it is difficult to bend and the adhesive strength is insufficient.

  Examples of the ink used for paper printing used in the present invention include ordinary inks composed of pigments, unsaturated oils and fats such as synthetic polymers and linseed oil. Further, an ultraviolet curable resin can be used instead of the synthetic polymer.

The temporary adhesive used for temporary bonding of paper used in the present invention is required to be easily peelable with a small force without peeling in a normal state, and to have no stickiness after peeling. For this purpose, a blended product composed of a pressure-sensitive adhesive, a pressure-sensitive adhesive strength adjusting agent and an additive is used.
Examples of the adhesive include natural rubber (NR), esterified natural rubber, styrene butadiene rubber (SBR), chloroprene rubber, polyvinyl acetate, polymethyl methacrylate, polymethyl acrylate, and the like, and also a mixture thereof. be able to.
The adhesive strength adjusting agent is used for adjusting the adhesive strength of the pressure sensitive adhesive, and a needle-like substance or a particulate substance is used. Specifically, potassium titanate can be cited as the needle-shaped substance, and microsilica, synthetic zeolite, calcium carbonate, zinc oxide, talc, and the like can be cited as the particulate substance. And the particle size of these fine particles is about 0.5-10 micrometers.
Since there are tackiness adjusting agents such as needle-like substances and particulate substances, the tackiness of the tackiness agent is limited, and there is almost no tackiness of the paper surface after peeling.

  In the present invention, additives can be used for the adhesive. Examples of additives include polyethylene wax, carnauba wax, and beeswax for improving lubricity. Further, an ultraviolet stabilizer can be used. Moreover, it is preferable to apply | coat the temporary adhesive for temporary bonding as an emulsion, and an emulsifier is used in order to make it into an emulsion. An example of the emulsifier is soap oleate.

  In order to adjust the temporary adhesive strength of paper, after printing the temporary adhesive, the surface opposite to the surface where the temporary adhesive is applied may be treated with a silicon compound to form a silicon film on the surface of the paper. it can. When a silicon film is formed only on one side during temporary bonding, the affinity with the temporary adhesive used for temporary bonding is reduced, and it becomes easier to peel off, but the possibility of peeling during storage increases. .

In the present invention, the peelable layer includes a binder and a masking agent. Examples of the binder include acrylic resins, vinyl acetate resins, rubber resins, and urethane resins. Moreover, paraffin wax etc. can also be mix | blended for peelability adjustment. Examples of the masking agent include metal powders such as aluminum powder and copper powder, inorganic pigments such as titanium oxide, zinc oxide, talc, iron oxide and kaolin, and organic pigments such as phthalocyanine blue.
For the formation of the peelable layer, it is possible to adopt a method such as screen printing in a heat-melted state.

The peelable layer is preferably in a state in which printed characters or the like cannot be read unless the peelable layer is removed using a masking agent. This is because if the characters written on the inside are further protected, the content of the concealed characters will be peeled off with the expectation, and even if temporary bonding is accidentally peeled off during transportation, the content will remain confidential. Because it is double safe.

The number of sheets of pressure-bonded postcards to be folded is 2 to 10, preferably 3 sheets. In many cases, since paper is printed on both sides, it is possible to incorporate sufficient information with about three sheets.

FIG. 1 is a developed view of a crimped postcard with the top layer surface 1 on the front side. FIG. 2 is a plan view of the crimped postcard 2 with the uppermost layer surface 1 on the front side, and A and B are folds of the crimped postcard. In order to obtain a crimped postcard, first, the content surface a3 and the content surface b4 are folded and overlapped with B as a crease, and then folded with B as a crease, the top layer surface 1 shown in FIG. 2 is obtained.
FIG. 3 is a developed view of the crimped postcard with the lowermost layer surface 7 on the front side. FIG. 4 is a back view of the crimped postcard 2 with the lowermost layer surface 7 on the front side.
In order to obtain the pressure-bonded postcard 2, first, the content surface c5 and the content surface d6 are folded and overlapped with A as a fold, and then folded and overlapped with B as a fold, whereby the pressure-bonded postcard 2 shown in FIG. 4 is obtained. A part of the content surface c5 is provided with a peelable masking layer 8 using aluminum as a masking material and paraffin as a binder. After delivery of the pressure-bonded postcard 2 as a postcard, the masking layer 8 can be peeled off.

FIG. 5 is a cross-sectional view of the content surface d6. Printing is performed on the paper 11 with the printing ink 10, and the temporary adhesive layer 12 is formed thereon. FIG. 6 is a cross-sectional view of the content surface c5 provided with the concealing layer 8. Printing is performed on the paper 11 with the printing ink 10, and the temporary adhesive layer 12 is provided thereon. It is also possible to use a silicon release agent layer that facilitates peeling instead of the temporary adhesive layer 12. FIG. 7 is a cross-sectional view when the content surface c5 and the content surface d6 are temporarily bonded. Since the non-crimped gap 9 is generated between the temporary adhesive layer 12 by the masking agent 8, a weak portion of temporary adhesion is generated and it is easy to peel off at the time of peeling.

As is apparent from the above description, the pressure-bonded postcard according to the present invention has preferable practical effects as listed below.
(A) In the pressure-bonded postcard, there is an uncompressed gap in the vicinity of the concealing layer, and a portion having a weak temporary bonding strength is generated on the temporary bonding surface, which facilitates peeling.
(B) In a crimped postcard, there is an uncrimped gap near the concealing layer, so that there is little change over time, it becomes difficult to peel even for a long time, or the printed content is read by peeling between paper and printing ink. There are few accidents such as becoming difficult.
(C) Even if the temporary adhesive surface is peeled off due to an accident, it is possible to protect a particularly highly confidential part, and it is possible to maintain more confidentiality.
(D) It takes time to peel off the concealed portion after peeling the pressure-bonded postcard. During this time, it can be opened with expectation and the enjoyment can be extended.

It is an expanded view of the crimping postcard with the uppermost layer surface facing the front side. It is a top view of the pressure-bonded postcard after provisional adhesion so that the uppermost layer surface is on the front side. It is an expanded view of the pressure-bonded postcard with the lowermost layer surface on the front side. It is a back view of the pressure-bonded postcard after the temporary bonding in which the lowermost layer surface is on the front side. It is sectional drawing of the content surface d. It is sectional drawing of the content surface c part which provided the concealing layer. It is sectional drawing when the content surface c and the content surface d are piled up.

Explanation of symbols

1 Top layer surface 2 Crimp postcard 3 Content surface a
4 Contents b
5 Contents c
6 Contents d
7 Bottom layer surface
8 Concealing layer 9 Non-crimped gap 10 Printing ink 11 Paper 12 Temporary adhesive layer
A, B crease

Claims (7)

  In order to make a crimped postcard, it is printed with the paper unfolded, and then the paper is folded and temporarily bonded so that it can be easily peeled off. A crimped postcard characterized by a local layer.   The pressure-bonded postcard according to claim 1, wherein the peelable layer contains a pigment, a metal powder, a dye powder or the like to form a peelable concealment layer.   The pressure-bonded postcard according to claim 1, wherein printing is performed on paper with ink, and then a peelable layer or a concealing layer is formed.   The pressure-bonded postcard according to claim 1, wherein the peelable layer contains paraffins.   3. The pressure-bonded postcard according to claim 1, wherein the top layer surface and / or the bottom layer surface of the temporarily bonded pressure-bonded postcard are made smaller than other layers to facilitate peeling.   The pressure-bonded postcard according to claim 1, wherein the number of folded sheets is 2 to 10 sheets. The pressure-bonded postcard according to claim 1, wherein the number of papers to be folded is three.

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