JP3477178B2 - Laminated sheet - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminated sheet suitable for card making sheets, delivery slips, confidential postcards, etc., which is used by peeling off some layers.

[0002]

2. Description of the Related Art Today, general-purpose printers such as ink-jet printers and copiers are in widespread use, and for producing various cards such as business cards and party tickets using such general-purpose printers. Laminated sheets of are commercially available.

As a laminated sheet for making this card,
A card base layer having a substantially rectangular notch for dividing into card parts, a synthetic resin laminate layer, and a supporting base layer are provided, and the card base layer and the laminate layer are pseudo-bonded. What is laminated in the state is being developed. Such a laminated sheet for card production, after various printing is performed on the card portion of the card substrate layer surface using a general-purpose printing device, only the card portion of the card substrate layer is changed from the laminated layer in a pseudo-adhesive state. By peeling off, a card on which various information, patterns, etc. are arbitrarily printed can be produced.

In addition, a laminated sheet having the same structure as described above, in which a plurality of base material layers are laminated in a pseudo-adhesive state with a laminate layer, is also used for delivery slips and confidential postcards that are peeled off during use.

Here, the "pseudo-adhesive state" means that both layers are adhered in a normal use state, but when both layers are peeled off, they are easily peeled off only by pulling them manually without using a tool or the like. However, it means a state in which re-bonding cannot be performed simply by overlapping and pressing. The pseudo-adhesion state is different from the ordinary pressure-sensitive adhesive lamination in that "it cannot be re-adhered simply by overlapping and pressing."

[0006]

The above-mentioned conventional laminated sheet used by peeling off some of the layers as described above is manufactured by laminating a molten synthetic resin between base material layers using an extrusion laminating method or the like. However, the pseudo-bonding state is established between the base material layer and the laminate layer by a method such as controlling the temperature of the molten synthetic resin at a predetermined low temperature. However, it is difficult to accurately control the temperature of the molten synthetic resin when laminating by such an extrusion laminating method, so that it is difficult to adjust the peel strength between the base material layer and the laminating layer. There is a case where the material layer cannot be easily peeled off or unintentional peeling occurs during printing or transportation.

The present invention has been made in view of these inconveniences, and is possible without using a pseudo-bonding state that is difficult to adjust.
An object of the present invention is to provide a laminated sheet that allows one base layer to be easily and reliably peeled off manually and the peeling strength of the base layer can be accurately adjusted.

[0008]

The invention made to solve the above problems comprises a pair of base material layers and a non-adhesive easy-destructible layer disposed between the pair of base material layers. The non-adhesive easy-destructive layer is a laminated sheet having a binder, a filler contained in the binder, and bubbles. Here, the "non-adhesive easy-destructible layer" can hold the laminated state of the pair of base material layers disposed on both sides in a normal use state, but the pair is manually formed without using a tool or the like. It means a layer which is easily broken into two layers (interlayer destruction) by applying an external force so as to peel off the base material layer, and which has no adhesiveness on the broken surface.

In the laminated sheet, the non-adhesive easy-destructible layer has the interlaminar destructive property and the non-adhesive property of the destructible surface by the filler contained in the binder, and the non-adhesive property is caused by the bubbles contained in the binder together with the filler. The interlayer destructibility of the easily destructible layer is remarkably enhanced. Therefore, according to the laminated sheet,
Interlayer destruction of the non-adhesive easy-destructible layer allows the pair of base material layers to be easily and reliably peeled off by hand, and the peeled surface of the pair of base material layers, that is, the fracture surface of the non-adhesive easy-destructible layer. Since it has no tackiness, the pair of base material layers after peeling can be provided for convenience such as management and arrangement. Therefore, the laminated sheet is suitable for a laminated sheet such as a card-making sheet used by peeling off a part of the base material layer, a delivery slip, and a confidential postcard. In addition, according to the laminated sheet, it is achieved by simply laminating the resin composition forming the non-adhesive easy-destructible layer, and it is necessary to obtain a pseudo-adhesive state by accurate temperature control and the like like a conventional laminated sheet. Since these are not present, the laminated sheet used by peeling off these base material layers can be easily manufactured.

In the laminated sheet, the peel strength of the pair of base material layers due to the interlaminar fracture of the non-adhesive easy-destructible layer is preferably 0.02 N / 5 cm or more and 16 N / 5 cm or less. With such peel strength, the pair of base material layers does not cause unintended peeling during printing on the surface of the laminated sheet, and the pair of base material layers does not peel when the base material layer is peeled. The base material layer can be manually and easily peeled off.

[0011]

The volume ratio of the filler to the binder is preferably 50% or more and 500% or less. By setting the content volume ratio of the filler to the binder in the above range and blending the filler in a relatively large amount, the interlaminar destructive property of the non-adhesive easy-destructible layer is promoted and the pair of base material layers can be manually peeled off. It will be easier.

The particle size (average particle diameter) of the filler is preferably 10 nm or more and 30 μm or less. By setting the particle size of the filler in the above range, the interlaminar destructive property of the non-adhesive easy destructible layer can be effectively exhibited.

An inorganic filler may be used as the filler. Since the inorganic filler and the binder have relatively low adhesiveness, and the interface between the binder and the inorganic filler triggers the non-adhesive easy-destructible layer to be relatively easily destroyed, the non-adhesive easy-destructible layer between the layers. Destructiveness can be promoted.

As the inorganic filler, one or more selected from the group consisting of colloidal silica, titanium oxide and calcium carbonate may be used. These inorganic fillers can effectively exert the action of promoting the interlaminar destructive property of the non-adhesive easy destructive layer. Further, these inorganic fillers are white in color, and can impart printability to the interlaminar fracture surface of this non-adhesive easy fracture layer.

[0016]

[0017]

The volume ratio of the bubbles to the binder is preferably 20% or more and 70% or less. By setting the volume ratio of the bubbles in the above range, it is possible to effectively exhibit the interlaminar destructibility of the non-adhesive easy destructible layer. In addition,
In the case where the non-adhesive easy-destructible layer contains bubbles in the binder together with the filler, good interlaminar fracture property is exhibited even if the volume ratio of bubbles is small.

A hydrophilic resin is preferred as the base polymer of the binder. Since this hydrophilic resin generally has low strength and low average molecular weight, it is possible to promote the above-mentioned interlaminar destructive property, and the filling of the filler further promotes the above-mentioned interlaminar destructive property. Further, according to this means, since the non-adhesive easy-destructible layer has a structure in which the filler is contained in the binder having the hydrophilic resin as the base polymer, it is used as the base polymer in the IJ ink image-receiving layer. When a hydrophilic resin with good water-based ink absorbency and good initial dryness is selected, a general-purpose inkjet printer is used for the interlaminar fracture surface of the non-adhesive easy-destruct layer after peeling off one of the base layers. Printing can be performed easily and reliably.

In the laminated sheet, an adhesive layer may be laminated between one base material layer and the non-adhesive easy-destructive layer. The non-adhesive easy-destructible layer can be directly laminated on a pair of base material layers by an extrusion laminating method or the like. According to this means, the non-adhesive easy-destructible layer is formed on one base material layer side. The laminated sheet can be manufactured by laminating the resin composition constituting the above by a simple means such as coating and laminating it with the other base material layer via an adhesive layer. Therefore, the easiness of manufacturing can be promoted by adopting the means.

IJ may be formed on the outer surface of one or both of the base layers.
An ink (which means an ink used for ink jet printing) image receiving layer may be laminated. By laminating the IJ ink image-receiving layer on the outer surface of the base material layer in this manner, it is possible to easily perform arbitrary printing on the outer surface of the laminated sheet by using a generally commercially available inkjet printer.

Further, one of the base material layers may be a self-coloring pressure-sensitive recording sheet. According to this means, the same print information can be transferred to the inner surface side of one base material layer by pressure-printing on the outer surface of the other base material layer in the laminated state of the laminated sheet. Therefore, the means is suitable for delivery slips, confidential postcards, and the like in which the same character information and the like are printed on a plurality of base material layers.

Further, it is preferable to form a notch on one of the base material layers so as to divide it into card parts. According to this means, after printing arbitrary information, a pattern or the like on the card portion of one base material layer of the laminated sheet by using a general-purpose printing device,
It is possible to easily produce various cards personally by peeling off only the card portion divided by the notches of the one base layer by the interlayer destruction of the non-adhesive easy-destructible layer.

Further, in addition to the above-mentioned means, an inner portion of a region corresponding to the card portion in the other base material layer (the other base material layer other than the one base material layer in which the notch is formed) is provided. It may be peeled off by interfacial destruction of the non-adhesive easy-destructible layer. Since the inner part of the region corresponding to the card part in the other base material layer is peeled off, the back surface side of the card part of the one base material layer is exposed, and printing is also performed on the back surface of the card part. Will be possible. Therefore, according to this means, it is possible to easily manufacture various cards that are double-sided printed.

Further, a part of the portion corresponding to the notch in the other base material layer may be peeled off by interlayer destruction of the non-adhesive easy-destructible layer. Since a part of the cut which divides the card part is not supported by the other base material layer, the card part can be easily peeled off by using a part of the cut cut.

[0026]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1A is a schematic sectional view showing a laminated sheet according to an embodiment of the present invention.
(B) is a typical sectional view showing a state where the base layer of the laminated sheet of (a) is peeled off. 2 (a), (b) and (c) are a plan view, a schematic cross-sectional view and a back view showing a laminated sheet for a card making sheet having a form different from that of the laminated sheet of FIG.

The laminated sheet 1 of FIG. 1 has a structure in which a first base material layer 2, a non-adhesive easy-destructible layer 3 and a second base material layer 4 are laminated in this order from the front surface side.

The first base material layer 2 and the second base material layer 4 are layers that become base materials for cards, delivery slips, confidential postcards, etc. by peeling them off at the time of use, such as paper materials, synthetic resin films, etc. Can be used. Usable paper materials include, for example, unbleached kraft paper, bleached kraft paper, high-quality paper, medium-quality paper, unbleached kraft paper, pure white roll, glassine paper,
Examples include thermal paper, pressure-sensitive paper, synthetic paper, Japanese paper, tracing paper, various coated papers, paperboards and liner papers.
Examples of usable synthetic resins include polyethylene, polypropylene, polymethylpentene, ethylene vinyl acetate resin, ethylene ethyl acrylate resin, ethylene acrylic acid resin, ethylene methacrylic acid resin, ethylene methyl acrylate resin, ionomer resin, polyvinyl. Examples thereof include alcohol and polyester. Further, polyethylene, polypropylene and the like polymerized by using a so-called metallocene catalyst can also be preferably used.

A paper material is used for the first base material layer 2 and the second base material layer 4.
When used, the weighing of this paper material is not particularly limited,
It should be selected appropriately according to the application, generally 30 g
/ M ^Two450g / m or more^TwoThe degree is as follows. Also,
1 synthetic resin film is used for the base material layer 2 and the second base material layer 4
Similarly, the thickness of the case can be selected appropriately according to the application.
Well, generally, it is set to 8 μm or more and 100 μm or less.
It

The non-adhesive easy-destructible layer 3 comprises a binder 5 and
The binder 5 is formed substantially uniformly in the binder 5.

The base polymer of the binder 5 is not particularly limited, and various synthetic resins can be used. Among them, hydrophilic resins and polyolefins having relatively low strength and good interlaminar fracture properties are used. resin,
A polyurethane resin or an emulsion of various resins is preferable, and a hydrophilic resin is particularly preferable. Examples of the hydrophilic resin include polyvinyl alcohol, polyethylene oxide, polypropylene oxide, polyvinylpyrrolidone, polyacrylic acid, sodium polyacrylate, methyl cellulose, polyacrylamide, water-soluble polyester resin, polyvinyl acetate, water-soluble polyamide resin. , Polyethyleneimine, polyethylenepolyamine, polyallylamine and the like, which may be used alone or in combination. In particular, the first base material layer 2 and the second base material layer 2 of the laminated sheet 1
When the inner surface side (peeling surface side) of the first base material layer 2 and the second base material layer 4 is printed with an inkjet printer after the base material layer 4 is peeled off, the water-based ink absorbency and initial dryness are improved. Excellent polyacrylic acid, sodium polyacrylate, polyvinyl alcohol, methyl cellulose, and polyvinylpyrrolidone are preferably used. In addition to the above base polymer, an antistatic agent, a surfactant, a dye fixing agent, an antioxidant, a pH adjusting agent and the like are appropriately blended in the binder 5.

The filler 6 is not particularly limited, and an inorganic filler and an organic filler can be used, but the inorganic filler is preferable from the viewpoint of promoting the interlaminar fracture property of the non-adhesive easy-breakdown layer. As the inorganic filler, for example, zinc, aluminum, magnesium, potassium, silicon, sodium, calcium, tantalum, titanium, zirconium, cerium, tin, indium, lanthanum and other oxides, chlorides, sulfides, hydroxides, Carbides and the like can be mentioned, and selected from these groups 1
It is preferable to use one kind or two or more kinds. However, colloidal silica, titanium oxide and calcium carbonate are particularly preferable in view of printability of the non-adhesive easy-destructible layer 3 on the interlaminar fracture surface.

The particle size of the filler 6 is 10 nm or more and 30 μm.
The following is preferable, and 1 μm or more and 20 μm or less is particularly preferable. By setting the particle size of the filler 6 in the above range, the interlaminar destructibility of the non-adhesive easy destructible layer 3 can be further enhanced. The lower limit of the particle size of the filler 6 is from the viewpoint of manufacturing.

The shape of the filler 6 is not particularly limited, and examples thereof include spherical shape, cubic shape, needle shape, rod shape, spindle shape, plate shape, scale shape, and fibrous shape. Above all,
The spherical shape and the spindle shape are preferable from the viewpoint of the above-mentioned interlayer destructive property because the peelability from the binder 5 is good.

The volume ratio of the filler 6 to the binder 5 is preferably 50% or more and 500% or less, and 100%.
It is particularly preferable to be 300% or more and 300% or less. This is because when the volume ratio of the filler 6 is less than the above range, the interface between the binder 5 and the filler 6 that contributes to the interlaminar fracture is reduced, and the interlaminar destructibility of the non-adhesive easy destructible layer 3 is sufficiently increased. This is because it cannot be achieved, and conversely, when the volume ratio exceeds the above range,
This is because it becomes difficult to mix the binder 5 in the binder 5, and it becomes impossible to maintain the laminated state of the pair of base material layers 2 and 4.

Although not shown, the binder 5 of the non-adhesive easy-breakable layer 3 may contain bubbles in addition to the filler 6. By including such bubbles in the binder 5, the starting point of the interlaminar fracture of the non-adhesive easy-destructible layer 3 is increased, and the binder 5 maintaining the layer state of the non-adhesive easy-destructible layer 3 is relatively decreased. Therefore, the interlaminar destructive property of the non-adhesive easy destructive layer 3 can be remarkably promoted.

The volume ratio of the bubbles to the binder 5 is 20% or more and 70% or less, and particularly 30% or more and 60%.
Hereafter, it is preferably 40% or more and 50% or less. This is because if the volume ratio of the bubbles is smaller than the above range, the effect of promoting the interlaminar fracture of the non-adhesive easy-breakdown layer 3 due to the bubbles cannot be sufficiently exerted. This is because if it exceeds the range, the interlaminar destructive property of the non-adhesive easy-destructible layer 3 becomes too large, and the laminated sheet 1 causes unintended peeling.

The shape of the bubbles is not particularly limited, and closed cells such as spheres can also exert the above-mentioned effect of promoting interlaminar fracture, but open cells are more effective in terms of the above-mentioned effect of promoting interlaminar fracture. Is preferred. In particular, the air bubbles flattened in a layer shape and arranged substantially parallel to the sheet surface, and the air bubbles present between the filler 6 and the binder 5 exhibit a greater effect of promoting interlayer destructiveness.

Means for forming such bubbles in the binder 5 include means for dispersing and mixing a foaming agent in the binder 5 to foam the foaming agent, and means for stirring the binder 5 before coating.

The peel strength of the pair of base material layers 2 and 4 due to the interlaminar failure of the non-adhesive easy-destructible layer 3 in the laminated sheet 1 is preferably 0.02 N / 5 cm or more and 16 N / 5 cm or less, and 0.05 N or less. / 5 cm or more and 10 N / 5 cm or less are particularly preferable. By setting the peeling strength to this extent, unintended peeling of the pair of base material layers 2 and 4 does not occur when the laminated sheet 1 is used, for example, when printing on the surface, and At the time of peeling, the pair of base material layers 2 and 4 can be easily and reliably peeled off manually.

Here, a method for measuring the peel strength will be described. First, a pair of base material layers 2 and 4 are laminated via a non-adhesive easy-destructible layer 3 and cut into a width of 50 mm and a length of 200 mm to obtain a test piece. One side of this test piece is attached to a metal plate with a double-sided tape, and the metal plate is set so that the length direction of the test piece is the vertical direction. Then, one of the base material layers of the lower side portion of the test piece is peeled off, and it is wound up to some extent and chucked. 300mm of this chuck part upwards
It is pulled at a pulling speed of / min to promote peeling, and the stress during this time is measured. The average value of this stress is the peel strength.

The laminated sheet 1 is manufactured by laminating a resin composition, which is composed of a binder 5 and a filler 6, and which constitutes the non-adhesive easy-breakdown layer 3 between a pair of base material layers 2 and 4. . As a method for laminating the resin composition, an extrusion laminating method or coating on the surfaces of the pair of base material layers 2 and 4 is adopted. As the coating means, various known means using a bar coater, a roll coater, a blade coater, a kiss coater, a comma coater or the like can be adopted. As described above, the laminated sheet 1 can be easily manufactured by simply laminating the resin composition having the composition forming the non-adhesive easy-destructive layer 3 between the base material layers 2 and 4. Unlike the laminated sheet for peeling, it is not necessary to set the pseudo-bonded state by precise temperature control or the like. In addition,
The coating amount of this resin composition depends on the application of the laminated sheet 1 and the like, but is generally 2 g / m ² or more and 100 in terms of solid content.
It is about g / m ² or less. The thickness of the non-adhesive easy-destructible layer 3 is generally 8 μ in consideration of the above-mentioned inter-layer destructive property.
It is about m or more and 100 μm or less.

In the laminated sheet 1, as shown in FIG. 1 (b), when an external force is applied to one of the base material layers 2 to peel it off, the non-adhesive easy-destructible layer 3 is formed in the middle portion of the layer. In 2
The base material layer 2 is broken into layers, and the one base material layer 2 can be easily and reliably peeled off from the other base material layer 4. Further, since the interlaminar fracture surface of the non-adhesive easy-destruct layer 3 has no adhesive property, the base layers 2 and 4 after peeling can be easily stored and managed. Furthermore, when a hydrophilic resin is used as the base polymer of the binder 5 that constitutes the non-adhesive easy-breakdown layer 3, inkjet printing can be clearly applied to the peeling surface sides of the base layers 2 and 4.

The laminated sheet 11 shown in FIGS. 2 (a), 2 (b) and 2 (c) is for making a card and is B5 size, A4 size so that it can be printed by a general-purpose ink jet printer.
It is formed in a predetermined size such as a size (postcard size is shown in FIG. 2). This laminated sheet 11 is
The J ink image-receiving layer 12, the card base layer 13, the non-adhesive easy-destruct layer 14, the adhesive layer 15, and the supporting base layer 16 are laminated in this order from the front side.

The IJ ink image-receiving layer 12 is formed of a hydrophilic resin composition and has good absorbability of water-based ink and good initial drying property. The IJ ink image-receiving layer 12 enables clear printing on the surface of the laminated sheet 11 with an inkjet printer. As this hydrophilic resin composition, the same as the hydrophilic resin of the above-mentioned binder 5 is used, and in addition, an inorganic pigment, an antistatic agent, a surfactant, a dye fixing agent, an antioxidant, a pH adjusting agent and the like are used. It is blended appropriately.

The card base material layer 13 is a layer which becomes a card after being peeled off, and the supporting base material layer 16 is a layer for supporting the card base material layer 13. The card base material layer 13 and the supporting base material layer 16 are the same as the pair of base material layers 2 and 4 of the laminated sheet 1 of FIG. The non-adhesive easy-destructible layer 14 is also the same as the non-adhesive easy-destructible layer 3 of the laminated sheet 1 of FIG.

The adhesive layer 15 is composed of an adhesive and is a layer for adhering the non-adhesive easy-breakable layer 14 and the supporting base material layer 16. Examples of the adhesive used for the adhesive layer 15 include natural products such as starch, glue, casein, and natural rubber, thermoplastic and thermosetting synthetic resins, synthetic rubber, reactive adhesives, instant adhesives, and hot adhesives. Examples include melt adhesives. The method for laminating the adhesive layer 15 is appropriately selected according to the adhesive used, and for example,
There are a method of applying an adhesive to the non-tacky easily destructible layer 14 or the supporting base material layer 16, and a method of laminating a synthetic resin between both layers by an extrusion laminating method or a dry laminating method.

The laminate of the IJ ink image receiving layer 12 and the card base material layer 13 is provided with a plurality of substantially rectangular notches 18 (two locations in FIG. 2) for dividing into card portions 17.

Further, in the laminated body of the adhesive layer 15 and the supporting base material layer 16, the inner portion 19 of the region corresponding to the card portion 17 is peeled off by interlayer destruction of the non-adhesive easy-destructible layer 14. . Therefore, the inner portion 19 of the back surface of the card portion 17 of the card base layer 13 is exposed, and the back surface of the card portion 17 can be printed using a general-purpose printing device. Since a part of the non-adhesive easy-destructible layer 14 which has been interlayer-destructed remains on the back surface of the card portion 17, a hydrophilic resin is used for the binder 5 of the non-adhesive easy-destructible layer 14. If so, it is suitable for inkjet printing.

Further, the adhesive layer 15 and the supporting base material layer 16
In the laminate, a part 20 of the portion corresponding to the notch 18 of the base material layer 13 for a card is peeled off by the interlayer destruction of the non-adhesive easy-destructible layer 14. Therefore, the card unit 1
Since the notch 18 that divides the 7 is not supported by the supporting base material layer 16 in the above-mentioned part 20, the card part 17 can be easily peeled off by the notch 18 that is penetrated in the front and back in this part 20. .

Next, a method of manufacturing the laminated sheet 11 having the above structure will be described. First, the IJ ink image-receiving layer 12 is laminated on the surface of the card base material layer 13 by coating the surface of the card base material layer 13 with the hydrophilic resin composition. In addition, the non-adhesive easy-destructible layer 14 is laminated on the back surface of the card base material layer 13 by applying the resin composition for the non-adhesive easy-breakable layer 14 to the back surface of the card base material layer 13. . Next, the laminate composed of the IJ ink image receiving layer 12, the card base material layer 13, and the non-adhesive easy-destructible layer 14 and the supporting base material layer 16 are bonded to each other via the adhesive layer 15. Finally,
The IJ ink image receiving layer 12 and the card base material layer 13 are formed with a notch 18 for partitioning into the card portion 17, and the supporting base material layer 16 and the adhesive layer 15 are not covered with the inner portion 19 and the portion 20. The laminated sheet 11 is completed by peeling off the adhesive easy-destructible layer 14 by interlayer destruction.

According to the laminated sheet 11, the card portion 1
After performing predetermined printing on the front surface of 7 with an inkjet printer and performing predetermined printing on the back surface of the exposed card portion 17 with the same inkjet printer, peel off the card portion 17 divided by the notch 18 Multiple printed cards are completed.

The laminated sheet of the present invention is not limited to the above embodiment. For example, in addition to those for card production, a delivery slip or a delivery slip in which a plurality of base material layers are peelably laminated is used. It can be applied to confidential postcards. Further, by using one of the base material layers as a self-coloring pressure-sensitive recording sheet, it is possible to transfer the same description to one of the base material layers at the same time as the pressure printing on the surface of the other base material layer. Furthermore, the non-adhesive easy-destructible layer is not limited to the one containing the filler 6 in the binder 5, and any non-adhesive easily destructible layer may be used as long as it has interlaminar destructiveness to such an extent that the pair of base material layers can be manually peeled off. The configuration does not matter. For example, a layer having a structure having a base polymer and bubbles contained in the base polymer is also possible. The base polymer is the same as the binder 5, and the volume ratio of bubbles to the base polymer is also the same as above.

[0054]

As described above, according to the laminated sheet of the present invention, even if the pseudo-bonding state, which is difficult to adjust, is used,
One base layer can be easily and reliably peeled off manually, and the peel strength of the base layer can be accurately adjusted. Therefore, the laminated sheet is suitable for being peeled off and used for card making sheets, delivery slips, confidential postcards, and the like.

[Brief description of drawings]

1A is a schematic cross-sectional view showing a laminated sheet according to an embodiment of the present invention, and FIG. 1B is a schematic cross-sectional view showing a base material layer peeled state of the laminated sheet of FIG. is there.

2 (a), (b) and (c) are a plan view, a schematic cross-sectional view and a back view showing a laminated sheet for a card making sheet having a different form from the laminated sheet of FIG.

[Explanation of symbols]

1 laminated sheet 2 First base material layer 3 Non-adhesive easy destructible layer 4 Second base material layer 5 binders 6 Filler 11 laminated sheets 12 IJ ink receiving layer 13 Base layer for cards 14 Non-adhesive easy destructive layer 15 Adhesive layer 16 Supporting base material layer 17 Card section 18 notches 19 Inner part 20 part

─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields investigated (Int.Cl. ⁷ , DB name) B32B 1/00-35/00 B42D 11/00 B42D 15/00-15/10 G09F 3/03

Claims (14)

(57) [Claims] 1. A pair of base material layers and a non-adhesive easy-destructible layer disposed between the pair of base material layers, wherein the non-adhesive easy-destructible layer comprises a binder and a binder. Binder
-A laminated sheet having a filler and air bubbles contained therein . 2. The peel strength of the pair of base material layers due to the interlaminar fracture of the non-adhesive easy-destructible layer is 0.02 N / 5 cm or more.
The laminated sheet according to claim 1, which has a N / 5 cm or less. 3. A process according to claim volume ratio to binder of the filler is less than 500% 50% 1 or claim 2
The laminated sheet according to. 4. The particle size of the filler is 10 nm or more and 30 μm.
The laminated sheet according to claim 1, 2 or 3, which has a thickness of m or less. 5. The laminated sheet according to any one of claims 1 to 4, wherein an inorganic filler is used as the filler. As claimed in claim 6 wherein the inorganic filler, colloidal silica, claims 1 or 2 or more things are selected from the group consisting of titanium oxide and calcium carbonate are used
The laminated sheet according to item 5 . 7. The volume ratio of the bubbles to the binder is 20% or more and 70% or less, according to any one of claims 1 to 6.
The laminated sheet according to item 1 . 8. The laminated sheet according to any one of claims 1 to 7, wherein a hydrophilic resin is used as the binder . 9. The laminated sheet according to claim 1, wherein an adhesive layer is laminated between one of the base material layers and the non-adhesive easy-breakable layer. 10. The laminated sheet according to any one of claims 1 to 9 , wherein an IJ ink image-receiving layer is laminated on the outer surface of one or both of the base material layers. 11. The laminated sheet according to claim 1, wherein one of the base material layers is a self-coloring pressure-sensitive recording sheet. 12. The laminated sheet according to any one of claims 1 to 11 , wherein one of the base material layers has a notch for dividing into a card portion. 13. The laminated sheet according to claim 12 , wherein an inner portion of a region corresponding to the card portion in the other base material layer is peeled off by interlayer destruction of the non-adhesive easy-destructible layer. 14. The laminated sheet according to claim 12 or 13 , wherein a part of a portion of the other base material layer corresponding to the cut is peeled off by interlayer fracture of the non-adhesive easy-destructive layer.