JPH0279082A - Adhesive material - Google Patents

Abstract

PURPOSE:To eliminate the need for a peeling process, etc., and to facilitate cutting by forming a peeling agent layer between a thermal adhesive resin layer and a base material and providing linear perforations. CONSTITUTION:The peeling agent layer 22 is formed at least part of the surface of the base material 18 and the thermal adhesive resin layer 24 is formed on the main surface of the peeling agent layer 22. Then, linear perforations 26 are formed at the peeling agent layer part so that cutting lines 29a which are almost in the cutting direction 29 of a cut part 28 extend between nearby end parts of adjacent perforations 26. Consequently, the peeling process, etc., is not necessary and the cut part is easily cut only by pulling the cut part 28 in one cutting direction 29 regardless of whether the cut part is arcuate or rectangular.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to an adhesive material formed so that a portion thereof can be cut off, and in particular, for example, a cutout portion surrounded by a perforation can be peeled off. The present invention relates to an adhesive material configured so that information, etc. on the bottom surface thereof can be viewed.

(Prior Art) Conventionally, as a method for cutting sheet substrates such as paper and film without using cutting tools such as scissors or knives, cut portions and uncut portions are alternately provided in advance.
A method is used in which the cut portion and the uncut portion form so-called perforations on the same straight line, and the cut is made by hand along the perforations.

On the other hand, in recent years, there has been an increase in the number of mail items containing confidential information, such as notifications of bank deposit balances, but the field for writing confidential information is hidden during mailing, and the recipient is responsible for receiving the official receipt. Postcards formed so that the contents can be viewed relatively easily have been developed, as seen in, for example, Japanese Utility Model Publication No. 54-3789.

(Problem to be Solved by the Invention) However, when cutting into, for example, an arc shape or a rectangular shape using conventional perforations that are on the same straight line, the sheet substrate must be bent in advance at the perforation portion corresponding to the cutting point. Therefore, it is necessary to perform complicated operations such as making it easier to cut through the perforations or cutting into a predetermined shape while frequently changing the cutting direction, which requires a considerable amount of time and effort.

Also, as seen in Utility Model Publication No. 54-3789,
Laminates formed in such a way that they can be peeled off in parts, for example in the frame, are made by applying dry glue over the entire surface of the paper to form an adhesive surface, and in parts, for example in the frame. In order to make it possible to peel off only the part, the other base material is processed with silicone, etc.
There is a need to make it possible to partially peel one laminate of a laminate structure by performing M processing. Therefore, when manufacturing them, one laminate requires a dry glue application process, and the other laminate requires a peeling process such as silicone processing, so it is inevitable that the laminate The structure becomes more complicated, and the number of manufacturing steps increases, leading to an increase in manufacturing costs.

Therefore, the main purpose of this invention is to make it possible to apply the paste at the optimal position relatively easily, and moreover, on the side of the material to be pasted! 31. It is an object of the present invention to provide an adhesive material that does not require a process such as a release process and can be cut into, for example, an arc shape or a rectangular shape by simply pulling the part to be cut in one direction.

(Means for Solving the Problems) In the present invention, a release agent layer is formed on at least a part of the surface of the base material, a thermally adhesive resin layer is formed on the main surface of the release agent layer, and the release agent layer is formed on the main surface of the release agent layer. In the layer part, linear perforations are continuously carved at appropriate intervals from one main surface of the base material to the other main surface, so that a part of the base material can be cut out by the perforations. A cut-out part is formed in the cut-out part, and a straight cut line substantially parallel to the cutting direction of the cut-out part is formed between adjacent perforations so as to cross between adjacent ends of each perforation. It is a material.

(Function) The thermoadhesive resin layer formed on the back surface is pressurized and heated, thereby melting the thermoadhesive resin layer and adhering it to the material to be adhered. The release agent layer formed between the base material and the thermoadhesive resin layer functions to enable the base material to be peeled off from the thermoadhesive resin layer.

Then, the base material is cut out by a perforation formed such that a straight cut line parallel to the direction in which the cut out part is cut out crosses between adjacent ends of each perforation between the adjacent perforations. It is cut at a straight cut line parallel to the cutting direction.

(Effects of the Invention) According to the present invention, the adhesive is bonded by melting the heat-adhesive resin layer formed on the back surface by heating, so that the adhesive material is overlapped at the optimal position. If the adhesive is heated for the first time after 6'fl j71, the adhesive material will be accurately adhered to the optimal position. Moreover, the surface of the material to be adhered does not require any peeling treatment, and by forming a release agent layer between the heat-adhesive resin layer of this adhesive material and the base material, the adhesive strength can be improved. By providing a difference in the adhesive material, it is possible to configure the adhesive material so that it can be peeled off in a small portion (at least in that portion).

Moreover, the linear perforations are carved so as to extend from one principal surface to the other principal surface of the base material, and linear cutting lines parallel to the direction in which the cutout portion is cut are provided between the adjacent perforations. The perforation is formed to cross adjacent edges of the perforation, so when cutting the cutout, if you pull the cutout in one cutting direction, it will be possible to cut out the cutout in an arcuate or rectangular shape, for example. It can be cut out very easily, and therefore, it can be cut out without changing the cutting direction to another direction, which saves troublesome effort when cutting out.

The above objects, other objects, features and advantages of the present invention will become more apparent from the following detailed description of embodiments with reference to the drawings.

(Example) Fig. 1A and Fig. 1B are diagrams showing a postcard to which an adhesive material according to an embodiment of the present invention is attached, Fig. 1A is a surface view thereof, and Fig. 113 is a It is an enlarged view.

FIG. 2 is a partially cutaway back view of the embodiment.

This continuous postcard paper 10 includes a postcard mount 2, which is a material to be adhered, and which is formed to the size of a government postcard, and a covering material 14, which is an adhesive material, that is stuck to a part of the postcard mount 12.

As shown in FIG. 6B, the continuous paper IO includes a continuous postcard base paper 10a that is separably formed into a postcard mount 12 that is formed to the size of an official postcard.

That is, perforations are appropriately formed on the boundary line of each postcard mount 12 to form a postcard, and sprocket holes 16 are formed at appropriate intervals on both ends of the continuous postcard base paper 10a. are formed continuously.

In this invention, the postcard continuous layer 11E10a includes not only typical paper but also thin materials such as synthetic paper and other synthetic resin sheets.

Next, the covering material 14 to be affixed to the surface of the postcard mount 12, especially in areas where confidential matters are written, such as information on finance or insurance, will be explained based mainly on FIGS. 2 and 3. I will explain.

The covering material 14 includes a base material 18 made of a material that is relatively flexible and can be cut by hand, such as paper or a synthetic resin film.

A concealing layer 20 is formed on one main surface of the base material 18 .

The hiding layer 20 is formed, for example, by silver printing with silver ink or the like, or by laminating film materials having hiding power such as aluminum foil with an adhesive or the like.

A part of the surface of the hiding layer 20 is formed with a release agent layer 22 coated with a release agent such as silicone resin, fluorocarbon resin, paraffin, and Wanx.

The surface of the hiding layer 20 on the side of the release agent layer 22 may be further coated with a thermoadhesive resin by extrusion while heating, or dissolved in a solvent or dispersed in water, and printed with gravure or silk screen. A thermally adhesive resin layer 24 is formed.

This thermally adhesive resin layer 24 has a temperature of 100°C to 2°C, for example.
It is formed so that it can be melted at a temperature of 00° C. and completely adhered to the postcard mount 12.

In this embodiment, a release agent layer 22 is formed at both ends of the coating material 14, that is, on the sprocket hole 16 side of the continuous base paper 10a, with a predetermined width of the base material 18 remaining.

Further, a covering material 14 is formed on the width direction side of the continuous base paper 10a.
There is a spot bonding portion 24a where the release agent layer 22 is not formed so that the heat adhesive resin layer 24 and the hiding layer 20 side of the base material 18 are directly bonded to each other in a spot shape. Further, a portion with a constant width formed at the other edge of the covering material 14 is formed where the thermal adhesive resin layer 24 is exposed over the entire surface. Therefore, in the part where the release agent layer 22 is formed, the base material 18 and the thermal adhesive resin N24 are weakly bonded, and in the part where the release agent layer 22 is not formed, the base material 18 and the thermal adhesive resin N24 are weakly bonded. It is strongly adhered to the synthetic resin layer 24. Although the spot adhesive part 24a was formed at the tip of the covering material 14 in the above embodiment, the spot adhesive part 24a may be formed at either the tip or the rear end. It may be formed in any part. Furthermore, instead of the spot adhesive part 24a, for example, a belt-shaped frame-shaped adhesive part may be formed.

A lottery portion 25 is formed on the surface of the concealing layer 20, in which characters such as winning, losing, etc. are written, for example.

Note that in order to enable the lottery part 25 to be seen through the heat-adhesive resin layer 24 and release agent layer 22, it needs to be transparent or semi-transparent. Further, the lottery portion 25 may be formed on the surface of the release agent layer 22.

A cutout perforation 26 is formed slightly inside the release agent layer 22, extending from one main surface to the other main surface of the base material 18. The cutout perforation 26 allows a substantially rectangular cutout 2
8 is formed.

Of course, the portion surrounded by the cut-out perforation 26 constitutes the cut-out portion 28.

This cutout portion 28 has a cutout direction 29 formed diagonally from one of its four corners to the opposite corner.

The cutting perforation 26 is composed of a linear cut portion 26a and an arcuate cut portion 26b. The linear cut portions 26a are continuously formed in parallel on a straight line at appropriate intervals along the inner peripheral edge of the cutout portion 28, and are cut out from the end of the linear cut portion 26a. An arc-shaped cut portion 26b is formed slightly outwardly or slightly inwardly of the portion 28. That is, on both sides of the cutout 28 near the corner 28a at the beginning of cutting, the arcuate cut portions 26b face inward, and on the opposite sides, the arcuate cut portions 26b face outward. There is.

Then, the end of the arc-shaped cut portion 26b that is not connected to the linear cut portion 26a, and the arc-shaped cut portion 26
The direction in which the linear cut portion 26a in which the cut portion 26a is not formed is connected to the end thereof in substantially the same direction as the cutting direction 29.

That is, between the adjacent cutting perforations 26, a linear cutting line 29a parallel to the cutting direction 29 of the cutting portion 28 is connected to the end of the linear cut portion 26a of each cutting perforation 26. It is formed to cross the end of the arcuate cut portion 26b.

Then, as shown in FIGS. 1B and 3, this cutting adhesive material 14 is attached to an appropriate part of the postcard mount 12 formed into a postcard size, for example, if the postcard is a notification of a bank account balance, the amount of money is The thermoadhesive resin layer 22 is melted and adhered to the surface of the confidential information entry column 12a by its adhesive force.

The cutout portion 28 is a corner portion 28a at the beginning of cutting.
By picking it up and pulling it in the cutting direction 29, the rectangular cutout part 28 is cut off from the other part of the base material 18 and peeled off from the postcard mount 12,
For example, a confidential information field 12a formed on the surface of the postcard mount 12 is formed so as to be readable.

Examples of the base material I8 include, in addition to the above embodiments, synthetic paper, cellophane, polyethylene, polyester films, aluminum foil, etc.
When the coating material 14 is attached to the continuous base paper 10a, the coating material 14 should be relatively thin so that the layers do not peel off inadvertently against the adhesive force of the heat-adhesive resin layer 24 in the area where the release agent layer 22 is formed. It is better to choose something flexible.

Furthermore, if a material with excellent hiding properties, such as aluminum foil, is selected as the base material 18, it is not necessary to form the hiding layer 20 as in the above embodiment.

As an example of the adhesive resin, an EVA adhesive is selected. Its composition consists of EVA (ethylene-vinyl acetate copolymer resin), a tackifier, a wax, and an antioxidant, and a plasticizer and a filler may be added as supplements.

Examples of the tackifier include glycerin ester of partially hydrogenated rosin, glycerin ester of rosin, pentaerythritol modified rosin, petroleum resin, α-methylstyrene/vinyltoluene copolymer, terpene oil polymer, and terpene phenol polymer.

Examples of the wax include paraffin wax, microcrystalline wax, low molecular weight polyethylene wax, Fischer-Tropsch wax, Castor wax, and chlorinated paraffin.

Examples of antioxidants include hindered phenol compounds, salicylic acid compounds, benzophenone compounds, benzotriazole compounds, phosphorus compounds, sulfur compounds, and organometallic compounds.

Examples of adhesive resins other than the above examples include styrene-butadiene-styrene copolymer resin, styrene-isoprene-
Styrene copolymer resin, polyethylene, ethylene-ethyl acrylate copolymer resin, ethylene-acrylic acid copolymer resin, ethylene-methyl acrylate copolymer resin, ethylene-methyl methacrylate copolymer resin, ethylene-methacrylic acid copolymer resin, ionomer resin , polymethylpentene resin, ethylene-vinyl alcohol copolymer resin,
Vinylidene chloride resin, vinyl chloride-vinyl acetate copolymer resin, polyamide resin, styrene-acrylic acid copolymer resin, polystyrene resin, polyacrylic acid copolymer resin, polyester resin, polyurethane resin, waxes, etc. can be selected. When printing or coating these, they may be used as appropriate while being heated, dissolved in a solvent, or dispersed in water.

Next, a method for manufacturing the covering material 14 will be explained based mainly on FIGS. 4 to 6A.

First, a paper forming the base material 18 is prepared, and the hiding layer 20 is formed on the main surface of the paper by solid silver printing with silver ink, for example, by a well-known printing method such as off-cent printing, or by coating. do.

Next, the lottery part 25 is formed by printing appropriate light or drawing lines such as the missing 1 number on the surface of the hiding layer 20.

The base material 18 on which the masking N20 has been formed is then led to a release agent coating device 30, as shown in FIG. The release agent coating device 30 coats the surface of the 20 hidden layers of the base material 18 with
For example, it is for printing and applying a release agent 22a such as silicone resin, fluorocarbon resin, paraffin, wax, etc., and includes a holding roller 32 for holding the base material 18 in a roll shape. The base material 18 held by the holding roller 32 is guided to a coating device 38 that includes two rollers 34a and 34b and a storage tank 36, and the release agent 22a is applied while rotating the rollers 34a and 34b. Note that the coating device 38 is a gravure roll coater.

A coating device such as a reverse roll coater may be used, or a known printing machine such as an offset printing machine or a screen printing machine may be used.

The base material 18 coated with the release agent 22a is then led to a dryer 40 including a heater and dried. In the dryer 40, a release agent 22 printed and applied to the base material 18 is removed.
a is dried to form a release agent layer 22.

The base material 18 on which the release agent layer 22 has been formed in this manner is guided to the winding device 42 .

Next, the laminate obtained by winding the base material 18 on which the release agent layer 22 is formed is loaded onto the holding roller 52 of the thermal adhesive resin coating device 50 .

One end of the base material 18 held by the holding roller 52 is unwound, and the base material 18 is guided to the thermal adhesive resin coating device 54 .

This thermal adhesive resin application device 54 is for printing and applying a thermal adhesive resin 24a whose main ingredient is the above-mentioned ethylene-vinyl acetate copolymer resin, for example, on the surface of the base material 18 on the hidden layer 20 side. The thermoadhesive resin 24a is applied while heating to an appropriate temperature.

Then, the base material 18 on which the thermal adhesive resin 24a is printed and applied is guided to a dryer 56 including a device for blowing cold air, and the thermal adhesive resin 24a is dried to form the thermal adhesive resin layer 24.

Next, the base material 18 on which the heat-adhesive resin layer 24 has been formed is guided to a score forming device 58 that forms perforations 26 for cutting in the base material 18 as appropriate.

In this way, the continuous body 14a of the covering material in which the hiding layer 20, the release agent layer 22, and the heat-adhesive resin layer 24 are sequentially laminated on the main surface of the base material 18 is wound up again into a roll.

In this embodiment, as shown in FIG. 6A, near both ends of the continuous base paper 10a on the sprocket hole 16 side, there are portions with a certain width where the release agent layer 22 is not formed. Further, the thermal adhesive resin layer 24 and the hiding layer 20 on the base material 18 side are peeled off in spots at the leading and trailing end portions of the covering material 14 on the widthwise side of the continuous base paper 10a so that they are directly adhered to each other. There are spot adhesive portions 24a on which the agent layer 22 is not formed.

Note that the surface of the base material 18 may be appropriately printed with printing suitable for the properties of the postcard mount 12, and in the case of a continuous one as in the above-mentioned embodiment, for example, to detect the feed pitch of the base material 18. The cutting direction 29 is used as a detection mark for
The arrow indicating the mark may be printed in black or the like.

Next, a method for adhering the covering material 14 to the surface of the postcard mount 12 will be described. For example, there are the following methods.

The postcard mount 12 is prepared in advance by cutting and molding it into the size of an official postcard, or by forming a plurality of sheets in a row with appropriate cuts as shown in the illustrated example.

However, in order to cover the confidential information such as the bank deposit balance formed on a part of the surface of the postcard with the covering material 14, appropriate characters should be printed in advance in an appropriate place on the postcard, for example, in the bottom column of the front surface. There is a need to keep it. Also,
When forming the lottery part on the postcard mount 12 side, it is necessary to form it in advance on the part covered by the covering material 14.

In addition, when adhering this covering material 14 to the bottom section of a postcard, for example, the postcard mount 12 is fed in one after another, one end of the rolled covering material 14 is taken out, and cut into an appropriate size using a cutter or the like. At the same time, the tapered adhesive material 14 is bonded to an appropriate portion of the postcard mount 12. Then, while applying pressure to the surface of the postcard mount 12 with a heating roller, the exposed portion of the thermal adhesive resin layer 24 and the thermal adhesive resin layer 24 below the release agent layer 22 are heated and activated, and the postcard mount 12 is heated and activated. It may be attached to the surface of the mount 12.

The continuous paper 10 partially covered with the covering material 14 in this manner is folded as appropriate, then cut off as appropriate, and delivered to a post office.

In this way, the continuous postcard paper 10 in which the covering material 14 is heat-adhered to the postcard mount 12 has a strong adhesive bond to the postcard mount 12 at the portion where the heat-adhesive resin layer 24 and the hiding layer 20 side of the base material 18 are directly bonded. In the portion where the release agent layer 22 is formed, the lower thermal adhesive resin layer 24 is weakly bonded.

Therefore, as shown in FIGS. 7A and 7B, in the part where the release agent layer 22 is formed, the postcard mount 1
2, the covering material 14 can be pulled off relatively easily and the lottery part 25 can be seen.

FIG. 8 is a surface view of a postcard to which a tear-out adhesive according to another embodiment is attached, and FIG. 7 is a sectional view of the tear-out adhesive shown in FIG. 6.

This cutting adhesive material 74 includes a base material 78 .

A thermoadhesive resin layer 84 is formed on one principal surface of the base material 78 by applying a thermoadhesive resin through a concealing layer 80 .

A release agent layer 82 is formed in a portion between the heat-adhesive resin layer 84 and the hiding layer 80. That is, the base material 7
A cutout portion 88 is formed in the center of the base material 78, leaving a band-shaped portion with a predetermined width slightly inside the inner peripheral edge of the base material 78.

A perforation 86 for cutting is formed at the periphery of this cut-out portion 88, that is, slightly inside the outer periphery of the release agent layer 82.

This cutting perforation 86 is formed by forming linear cuts 86a that diagonally intersect with a line connecting the outer periphery of the cutout 88 at predetermined intervals along a substantially straight line forming the outer periphery of the cutout 88. formed continuously.

In this embodiment, the cutting direction 89 is parallel to the cutting direction 89 in which the cutting portion 85 is cut out, that is, the cutting direction 89 is formed diagonally from the starting corner of the cutting portion 88 to the other corner opposite to the cutting portion 88. Cut 86
It is formed so that the space a is cut out. That is,
A linear perforation line 89a parallel to the direction 89 in which the cutout portion 88 is cut out is located between the tip of the cutout 86a forming each cutout perforation 86 and the adjacent cutout 86a in the adjacent cutout perforation 8G. A cutting perforation 86 is formed across the rear end.

Note that the cut-out perforation is not limited to the above-mentioned embodiments, and for example, it may be formed in an arc shape as a whole, and the cut-out portion may be formed in a circle, and the shape of the cut forming the cut-out perforation may be may also be changed as appropriate.

[Brief explanation of the drawing]

FIG. 1A is a surface view of a postcard to which an adhesive material according to an embodiment of the present invention is attached. FIG. 1B is an enlarged view of the example illustrated in FIG. 1A. FIG. 2 is a back view of a partially cutaway portion of the example illustrated in FIG. 1A. FIG. 3 is a partial sectional view of the example illustrated in FIG. 1A. 4 and 5 are illustrative diagrams of a manufacturing device showing an example of a method for manufacturing a coating material, FIG. 4 is a diagram showing a release agent coating device, and FIG. FIG. FIG. 6A is a perspective view of a continuous body of dressing material. FIG. 6B is a surface view showing an example of continuous postcard base paper. FIG. 7A is a perspective view showing a state in which the covering material of the above embodiment is peeled off, and FIG. 7B is a partial sectional view thereof. 8 and 9 are diagrams showing a postcard with an adhesive pasted thereon, which is a different example from the above-mentioned example, and FIG. 8 is a surface view showing the original state, and FIG. It is a partial sectional view. In the figure, 10 is continuous postcard paper, 10a is continuous postcard base paper, 12.72 is postcard mount, 14°74 is covering material,
16 is the sprocket hole, 18.78 is the base material, 20.80
22.82 is a concealing layer, 22.82 is a release agent layer, 24.84 is a thermoadhesive resin layer, 24a is a spot adhesive part, 25.85 is a lottery part, 26° 86 is a perforation for cutting, 26a is a linear cut 26b is an arc-shaped cut portion, 86a is a cut, 28.88 is a cutout portion, 29.89 is a cutout direction, 29a and 89a are cutout lines, 30 is a release agent coating device, 32 is a holding roller, 34a, 34b is a roller, 36
3B is a storage tank, 3B is a coating device, 40 is a dryer, 42 is a winding device, 50 is a thermal adhesive resin coating device, 52 is a holding roller,
54 is a heat-adhesive resin coating device, 56 is a dryer, and 58 is a cut forming device. Patent Applicant Omatsu Chemical Industry Co., Ltd. Agent Patent Attorney Oka 1) Zenkei 2nd diagram 4 Figure 3 Figure 4 Figure 4 Figure 6A Figure 9

Claims (1)

[Scope of Claims] A release agent layer is formed on at least a part of the surface of the base material, a thermal adhesive resin layer is formed on the main surface of the release agent layer, and a line is formed in the release agent layer portion. perforations are continuously carved at appropriate intervals from one main surface to the other main surface of the base material, and a cutout part is formed so that a part of the base material can be cut away by the perforations. is formed, and a straight cut line substantially parallel to the direction in which the cut portion is cut is formed between the adjacent perforations so as to cross between adjacent ends of each perforation. .