GB2219756A

GB2219756A - Adhesive material

Info

Publication number: GB2219756A
Application number: GB8911998A
Authority: GB
Inventors: Noboru Matsuguchi; Tadashi Matsuguchi
Original assignee: Daimatsu Kagaku Kogyo Co Ltd
Current assignee: Daimatsu Kagaku Kogyo Co Ltd
Priority date: 1988-05-31
Filing date: 1989-05-25
Publication date: 1989-12-20
Also published as: GB8911998D0; DE3917749A1; AU3528589A; FR2631887A1; LU87532A1; NL8901379A; KR900018310A

Description

J

SPECIFICATION

TITLE OF THE INVENTION Sticking Material and Manufacturing Method Thereof

BACKGROUND OF THE INVENTION Field of the Invention

The present invention relates to a sticking material and a manufacturing method thereof, more specifically, the present invention relates to a sticking material for covering temporarily a portion provided with a confidential matter by adhering it on the portion, and a manufacturing method thereof.

Description of the Prior Arts

As a conventional stickng material which constitutes a background of this invention, there is a sticking material which a pressure sensitive adhesive layer is formed on the reverse side of a sheet of base material.

In this conventional sticking material, a surface of a material to be sticked can be covered by adhering it on the surface of the material to be sticked, however, it is- not preferably used for covering temporarily the confidential matter, since the sticking material is hardly peeled off from the surface of the material to be sticked.

In oder to facilitate peeling the sticking material from 1 the surface of the material to be sticked, it is thinking that a peeling process such as silicon processing is applied on the surface of the material to be sticked so as to be peeled off the sticking material. However, it is hardly to apply the peeling process on the material to be sticked which is separated from the sticking material, and the cost for manufacturing increases.

SUMMARY OF THE INVENTION

Therefore, it is a principal object of the present invention to provide a sticking material, which is able to cover temporarily the surface of the material to be sticked without any process on the surface of the material to be sticked, and a manufacturing method thereof.

A sticking material according to the present invention is a sticking material comprising a base material having a suppressiveness, a primer layer formed on one main surface of the base material, and a first heat J. Ldherent resin layer formed on a surface of the primer layer.

A separate sticking material according to the present invention is a sticking material comprising a base material, a suppression layer having a suppressiveness formed on one main surface of the base material, a primer layer formed on a surface of the suppression layer, and a first heat adherent resin layer formed on a surface of the primer layer.

2 A manufacturing method of a sticking material according to the present invention is a manufacturing method of a sticking material comprising a process for preparing a base material having a suppressiveness, a process for forming a primer layer on one main surface of the base material, and a rst heat adherent resin layer on a process for forming a f. surface of the primer layer.

A separate manufacturing method oil a sticking material 0 according to the present invention is a manufacturing -erial comprising a process 1 method of a sticking mat Lor preparing a base material, a process for forming a suppression layer having a suppressiveness on one main surface of the base material, a process for forming a primer layer on a surface of the suppression layer, and a process f or f orming a f irst heat adherent resin layer on a surf ace of the primer layer.

Further, in the present invention, a second heat adherent resin layer having a strong adhesion may be formed on a part of surface of the first heat adherent resin layer.

When placed the surface of the first heat adherent resin layer on the surface of the material to be sticked and heat.ed the first heat adherent resin layer, the sticking material is adhered on the surface of the material to be sticked with the first heat adherent resin layer. In this case, the adhesion of the first heat adherent resin layer is increased by the 3 primer layer. Therefore, the first heat adherent resin layer is adhered strongly to the base material or the suppression layer, and is adhered weakly to the material to be sticked. Then, the surface oil the material to be sticked is covered with the base material of the sticking material including the base material having the suppressiveness or with the suppression layer of t.ie sticking material including the suppression layer having the suppress iveness.

When peeled off the base material, the base material, the primer layer and the first heat adherent resin layer are peeled off from the material to be sticked in the sticking material including ithe base material having the suppressiveness, while, the base material, the suppression layer, the primer layer and the first heat adherent resin layer are peeled off from the material to be sticked in the sticking material including the suppression layer having the supprssiveness. Therefore, the surface of the material to be sticked can be seeing.

When the second heat adherent resin layer is formed on the part of surface of the first heat adherent resin layer, the base material is not accidentally peeled off -from the material to be sticked with a force applied to the second heat adherent rsin layer, since the second heat adherent resin layer is adhered strongly to the material to be sticked. In this case, the surface of the material to be 4 sticked can be seen by cutting and peeling the base material etc. in a portion where the second heat adherent resin layer is not formed.

According to the present invention, a sticking material which is able to cover temporarily the surface of the material to be sticked without any process on the surface of the material to be sticked, and a manufacturing method thereof are obtained.

When the second heat adherent resin layer is formed partially on the surface of the first heat adherent resin layer, the surface of the material to be sticked can be covered preferably and temporarily without any process on the surface of the material to be sticked.

The above and other objects, features, aspect and advantages of the present invention will become more apparent from the following detailed description of the embodiments made in connection with the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a surface view showing one embodiment of the present invention, and Fig. 2 is a reverse side view thereof.

Fig. 3A is a perspective view showing a postcard piece of the embodiment shown in Fig. 1 and Fig. 2, and Fig. 3B is a sectional view thereof.

Fig. 4 is a diagrammatical view of a manufacturing machine showing one example of manufacturing process of a covering material of the postcard piece shown in Fig. 3A and Fig. 3B.

Fig. SA is a surface view of a continuous raw paper.

Fig. 5B is a perspective view of the covering material.

Fig. 6 is a perspective view generally showing an adhesion machine for the covering material.

Fig. 7A and Fig. 7B are diagrammatical views of an adhesive portion transfer unit.

Fig. 8 is a perspective view showing an essential portion of a covering material transfer unit.

Fig. 9A is a perspective view showing around a covering material cutter on the downstream side of the unit shown in Fig. 8, and Fig. 9B is a diagrammatical view showing an essential portion on the backside of the covering material cutter.

Fig. 10A is a perspective view showing an essential portion of a pressing and heating unit for the covering material, and Fig. 10B is a diagrammatical view showing an essential portion of its backside.

Fig. 11 is a view showing a time chart of the adhesion machine shown in Fig. 6.

Fig. 12A and Fig. 12B are views showing a state which the covering material of the postcard piece shown in Fig. 3A 6 and Fig. 3B is peeled off from the postcard material, in which Fig. 12A is a perspective view thereof, and Fig. 12B is a sectional view thereof.

Fig. 13A is a perspective view showing a variation of the postcard piece shown in Fig. 3A and Fig. 3B, and Fig. 13B is a sectional view thereof.

Fig. 14A and Fig. 14B are views showing a state which the covering material of the postcard piece shown in Fig. 13A and Fig. 13B is peeled off from the postcard material, in which Fig. 14A ia a perspective view thereof, and Fig. 14B is a sectional view thereof.

Fig. 15A is a perspective view showing a separate variation of the postcard piece shown in Fig. 3A and Fig. 3B, and Fig. 15B is a sectional view thereof.

Fig. 16A and Fig. 16B are views showing a state which the covering material of the postcard piece shown in Fig. 15A and Fig. 15B is peeled off from the postcard material, in which Fig. 16A ia a perspective view thereof, and Fig. 16B is a sectional view thereof.

Fig. 17A ia a perspective view showing a postcard piece as a separate embodiment of the present invention, and Fig. 17B ia a sectional view thereof.

Fig. 18 is a diagrammatical view of a manufacturing machine showing one example of manufacturing process of a covering material of the postcard piece shown in Fig. 17A and 7 Fig. 17B.

Fig. 19A and Fig. 19B are views showing a state which the covering material of the postcard piece shown in Fig. 17A and Fig. 17B is peeled off from the postcard material, in which Fig. 17A is a perspective view thereof, and Fig. 17B is a sectional view thereof.

Fig. 20A is a perspective view showing a variation of the postcard piece shown in Fig. 17A and Fig. 17B, and Fig. 20B ia a sectional view thereof.

Fig. 21A and Fig. 21B are views showing a state which the covering material of the postcard piece shown in Fig. 20A and Fig. 20B is peeled off from the postcard material, in which Fig. 20A is a perspective view thereof, and Fig. 20B is a sectional view thereof.

Fig. 22A is a perspective view showing a separate variation of the postcard piece shown in Fig. 17A and Fig. 17B, and Fig. 22B ia a sectional view thereof.

Fig. 23A and Fig. 23B are views showing a state which the covering material of the postcard piece shown in Fig. 22A and Fig. 22B is peeled off from the postcard material, in hich Fig. 23A is a perspective view thereof, and Fig. 23B.is a sectional view thereof.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

The present invention relates to a sticking material 8 which is adhered on the surface of the material to be sticked such as a postcard material, and a manufacturing method thereof, then, a postcard including a postcard material and a sticking material adhered on a surface of the postcard material, and a manufacturing method thereof will be explained.

Fig. 1 is a surface view showing one embodiment of the present invention, and Fig. 2 is a reverse side view there-of.

The continuous postcard 10 includes a postcard material 12 of standard postcard size and a covering material 14 as a sticking material adhered on a part of the postcard material 12.

The continuous postcard 10, as shown in Fig. SA, includes a continuous raw paper 10a which is formed separably into each postcard material 12 of standard postcard size. That is, on boundary lines of each postcard material 12, perforations are formed suitably to form each postcard material 12, and at opposite ends of the continuous raw paper 10a, sprocket holes 16 are formed continuously at a suitable distance.

In the present invention, as the continuous raw paper 10a, thin materials such as synthetic paper and other synthetic resin sheets and the like are used besides the typical paper.

Further, on the surface of the postcard material 12, a 9 lottery part 13a such as a letter "winning" or "lose" and a confidential matter 13b such as a information of the finance or the insurance are formed. The lottery part 13a and the confidential matter 13b are formed by printing on the surface of the postcard material 12. Meanwhile, the lottery part 13a and the confidential matter 13b may be formed by writing with a pen.

On the surface of the postcard material 12 including the lottery part 13a and the confidential matter 13b, the covering material 14 is adhered.

Then, the covering material 14 will be explained in refer to Fig. 2, Fig. 3A and Fig. 3B principally.

The covering material 14 includes a sheet of base material 18, the base material 18 is formed with a relatively soft material such as paper, synthetic resin film and the like which can be cut by a scissors or the like.

A suppression layer 20 is formed on one main surface of the base material 18. The suppression layer 20 is formed by printing a silver ink and the like or laminating a film material such as an aluminum foil having a suppressiveness with adhesives.

On the surface of the suppression layer 20, a primer layer 22 for increasing an adhesion of a first heat adherent resin layer 24 discribed later is formed. The primer layer 22 is formed by coating a resin such as vinyl chloride-vinyl 10 acetate copolymer on the surface of the suppression layer 2G. On the surface of the primer layer 22, the first heat adherent resin layer 24 is formed by coating a heat adherent resin as heating and extruding it, or by gravure or silk screen printing as dissolving it in a solvent or despersing in water.

The first heat adherent resin layer 24 is formed to melt at about 100'C to 200'C so as to be adhered to the postcard material 12 made of paper or the likd.

As an example of said heat adherent resin, adhesives of EVA group may be selected. The composition of the adhesive comprises an EVA (ethylenevinyl acetate copolymerized resin), a tackifier, a wax and an antioxidant, to which sometimes a release agent such as silicon for reducing the adhesion, a plasticizer -and a filler are added as an adjutant.

As the tackifier, there are glycerin of partially hydrogenated rosin, glycerin-ester of rosin, pentaerythritol modified rosin, petroleum resin, X -methyl styrene/ vinyl toluene copolymer, terpene oil polymer and terpene-phenol polymer, etc.

As the wax, there are paraffin wax, microcrystalline wax, low molecular weight polyethylene wax, Fischer-Tropsch wax, caster wax and chlorinated paraffin, etc.

As the anti-oxidant, there are hindered phenol group 11 compound, salicylic acid group compound, benzophenone group compound, benzotriazol group compound, phosphorus group compound, sulfur group compound, organic metal group compound, etc.

As the heat adherent resins other than the aforesaid examples, there are stylene-butadiene-stylene copolymer, stylene-isoprele-stylene copolymer, polyethylene, ethyleneethylacrylate. copolymerized resin, ethyleneacrylic acid copolymerized resin, ethylene-methyl acrylate copolymerized resin, ethylene-methyl methacrylate, ethylene-methacrylic acid copolymerized resin, ionomer resin, polymethylpentene resin, ethylenevinylalcohol copolymerized resin, vinylidene chloride resin, vinyl chloride-vinyl acetate copolymerized resin, polyamide resin, styleneacrylic acid copolymerized resin, polystylene resin,_polyacrylic acid copolymerized resin, polyester resin, polyurethane resin, waxes, etc. When printing and coating, these resins can be suitably used as heating or dissolving in a solvent or dispersing in water.

Next, a method of manufacturing the covering material 14 will be explained.

First, paper forming the base material 18 is prepared, and the suppression layer 20 is formed on one main surface thereof by allover printing with a silver ink, for example, by the known printing method as the offset printing or coating.

12 As showing Fig. 4, a rolled laminate comprising the base material 18 formed with the suppression layer 20 is mounted on a hold roller 32 of a manufacturing machine 3G for the covering material.

The base material 18 held by the hold roller 32 is loosen at one end and led to a resin coater 34. The resin coater 34 is designed to print and coat the resin 22a such as the aforesaid vinyl chloride-vinyl acetate copolymer on the suppression layer 20 of the base material 18.

The base material 18 onto which the resin 22a is printed and coated is then guided to a dryer 36, whereby the resin 22a is dried and the primer layer 22 is formed.

Next, the base material 18 formed with the primer layer 22 is directed to a heat adherent resin coater 40 for printing and coating the heat adherent resin 24a containing, for example, the aforesaid ethylene-vinyl acetate copolymerized resin as a main component. The heat adherent resin coater 40 is a printing or coating machine utilizing known printing and coating methods such as a typographic printing, gravure printing, silk screen printing, offset printing or the like.

By the heat adherent resin coater 40, the heat adherent resin 24a is printing or coating on the surface of the primer layer 22.

The base material 18 onto which the heat adherent resin 13 24a is printed or coated is led to a dryer 42, whereby the heat adh erent resin 24a is dried and the first heat adherent resin layer 24 is formed.

Thus, as shown in Fig. 5B, a continuous sheet 14a of the covering material is formed with the base material 18, the suppression layer 20, the primer layer 22 and the first heat adherent resin layer 24.

The continuous sheet 14a of the covering material is wound round a takeup roller 44 again.

In this embodiment, as shown in Fig. 2 and Fig. 5B, the suppression layer 20 is formed on one main surface of the base material 18, the primer layer 22 is formed on the surface of the suppression layer 20, and the first heat adherent resin layer 24 is formed on the surface of the primer layer 22. The adhesion of the first heat adherent resin layer 24 is increased by the primer layer 22. Therefore, the first heat adherent resin layer 24 is adhered strongly to the base material 18, and is adhered weakly to the postcard material 12.

Next, a method for adhering the covering material 14 on the surface of the continuous raw paper 10a will be explained on the basis of an adhesion machine shown in Fig. 6 through Fig. 11.

The adhesion machine 100for the covering material comprises a continuous paper transfer unit 102 which is 14 designed to feed the continuous raw paper 10a shown in Fi.g. 5A to the position where the covering material 14 is adhered.

The continuous paper transfer unit 102 includes transfer sprockets 106 formed substantially on opposite ends of a adhesion machine body 104, and an adhesive portion transfer device 108 which is formed substantially in the center of the adhesion machine body 104 to transfer the continuous raw paper 10a in the transferring direction by a suitable distance which, in the present embodiment, corresponds to the length of a sheet of covering material 14 adhered to the postcard material 12. The transfer sprockets 106 which are designed to rotate belts formed with projections which engage to the sprocket holes 16 of the continuous raw paper 10a, successively engage the projections to the sprocket holes 16 to transfer the continuous raw paper 10a.

The adhesive portion transfer device 108, as shown in Fig. 7A, includes a continuous paper transfer cum 114 secured to a shaft 112 disposed across the front and rear of the adhesion machine body 104. A suitable groove is formed in the body of the continuous paper transfer cum 114 which gives suitable vertical and front-to-back movements to a-link mechanism 116 by its uniform rotation. By the action of the link mechanism 116, an adhesive portion transfer table 118 fixed to the link mechanism 116 is moved back and forth continuously or intermittently. That is, the link mechanism 116 includes a link 116b which is fixed rockably to the adhesion machine body 104 with a pivot shaft 116a and a link 116c fi xed rotatably to the adhesive portion transfer table 118, and the link 116b is pivotally fixed to the link 116c. The adhesive portion trasnfer table 118 is move back and forth through the link mechanism 116 by rotation of the continuous paper transfer cum 114.

The amount of continuous raw paper 10a transferred in the continuous paper transfer unit 102, as shown in Fig. 7B, is detected by a synchronizing device 119. That is, a portion of the adhesive portion transfer table 118 is connected to a timing belt 119c mounted between timing pullies 119a and 119b provided at the front and rear of the adhesion machine body 104 by a connecting piece 119d, thereby the transferrig distance of the adhesive portion transfer table 118 is detected by a pulse signal from an encoder 119e coupled to the timing pully 119b to control the rotation of a pulsemotor which is a drive source formed on the continuous paper transfer unit 102 for the overall control.

Next, a transfer unit of the covering material 14 which is adhered to the surface of the continuous raw paper, 10a fed successively by the continuous paper transfer unit 102 will be explained with reference to Fig. 8, Fig. 9A and Fig. 9B.

The covering material transfer unit 120 includes a reel 16 122 whereon the rolled continuous sheet 14a of the covering material continuously formed by the coveringmaterial 14 is mounted, a covering material detector 124 which detects the transferring amount of the continuous sheet 14a pulled out from the reel 122 and the arrival of the continuous sheet 14a at a specified position to output the electrical signal to a controller of the covering material transfer unit 120, and a coveringmaterial cutter 126 which is disposedon the downstream side from the covering material detector 124 to cut the continuous sheet 14a into a suitable length.

In the covering material transfer unit 120, at the front and rear of the covering material cutter 126 which cuts the continuous sheet 14a, a pair of covering material carries 128 comprising rubber rings fixed to a shaft and rotatable as contacting each other are disposed.

The continuous sheet 14a of the covering materials clamped between the rings of the pair of covering material carriers 128 is carried to the suitable position on the sufrface of the continuous raw paper 10a by the rotation of the covering material carriers 128.

The covering material cutter 126 includes cutter blades 130a and 130b. The cutter blades 130a and 130b are fixed to a cutter body 132 pivotally about pivot axes 130c at one end and to a link mechanism 134 at the other end (refer to Fig. 9A and Fig. 9B).

17 The link mechanism 134 is fixed pivotally to a cutter shaft 136 fixed pivotally to the cutter body 132 through a fixed piece 138, and the cutter shaft 136 is connected to a disc 142 formed with a cum groove through links 140a and 140b as shown in Fig. 9B. The disc 142 is fixed to the shaft 112 which secures the continuous paper transfer cum 114.

Accordingly, as the disc 142 rotates the cutter shaft 136 is rotated by the action of cum groove formed in the disc 142 through the links 140a and 140b, thereby the cutter blades 130a and 130b are pivoted about the pivot axes 130c fixed to the cutter body 132 to cut the continuous sheet 14a of the covering material into the suitable size.

Next, a pressing and heating unit 150 which adheres the covering material 14 to the continuous raw paper 10a will be explained with reference to. Fig. 10A and Fig. 10B.

In the embodiment, the pressing and heating unit 150 includes a linear pressing and heating device 152 which presses the front end of the continuous sheet 14a of the covering materials linearly in the breadthwise direction of the continuous raw paper 10a to adhere it primarily thereto, and a flat pressing and heating device 154 which adheres the covering material 14 adhered to the continuous raw paper 10a at its front end by the linear pressing and heating device 152 to the continous raw paper 10a.

The pressing and heating unit 150 includes a square- 18 frame transfer pedestal 156. To the transfer pedestal 156, a linear heater 158 forming the linear pressing and heating device 152 and a plate heater 160 forming the flat pressing and heating device 154 are secured. The plate heater 160 has substaqntially the same arer as the covering material 14.

Furthermore, in the present embodiment, a press roller 162 is fixed pivotally to the transfer pedestal 156. The press roller 162 is designed to press the covering material 14 adhered to the continuous raw paper 10a by the plate heater 160 to ensure close adhesion. The transfer pedestal 156 onto which the linear heater 158 and flat heater 160 are mounted is fixed movably above the adhesive portion transfer table 118, thereby the continuous raw paper 10a is transferred between the linear heater 158, plate heater 160 and press roller 162 and the_ adhesive portion transfer table 118. The transfer pedestal 156 is designed to advance back and forth together with the adhesive portion transfer table 118 along the transferring direction of the continuous raw paper 10a.

The transfer pedestal 156 is fixed to a support 164 secured upwardly at the side of adhesive portion transfer table 118 through a link mechanism 166 movably vertically such that the linear heater 158 and plate heater 160 can be attached to the adhesive portion transfer table 118 and detached from it.

19 That is, an approximately L-shaped link 166a of the link machanism 166 is fixed pivotally to the transfer pedestal 156 at one end, and to the support 164 pivotally at its center by a shaft 168. A pair of same link mechanisms 166 on the upstream and downstream sides are connected by a turnbuckle 166b at the other end of the link 166a so as to operate similarly. The shaft 168 is fixed pivotally to the support 164, thereby the transfer pedestal 156 is moved vertically together with the linear heater 158 and plate heater 160.

The shaft 168 is connected to a disc 172 formed with a cum groove through another link mechanism 170 disposed at one end. The disc 172 is fixed to the shaft 112 to which the continuous paper transfer cum 114 and disc 142 are secured.

The link mechanism 170 includes a rocking and straight moving link mechanism 170A constituted by a guide 171a provided with a slot in the center, a rotor 171b which moves in the slot while rotating and a link 171c connecting the shaft 168 and the rotor 171b. Additionally, the link mechanism 170 includes a vertically moving link mechanism 170B which moves the guide 171a vertically and constituted by a link 171d connected to the guide 171a, a link l7le fixed pivotally to the link 171d, another link 171g connected to the other end of the link l7le through a pivot shaft 171f, link 171h connected pivotally to the link 171g and a link 171j connected to the link 171h at its one end and fixed to the adhesion machine body 104 by a pivot axis 171i.

By the action of cum groove formed in the disc 172, the vertically moving link mechanism 170B is actuated, and by the action of the link mechanism 170B, the guide 171a moves up and down in a slot 171k formed vertically in the adhesion machine body 104, thereby the link 171c of the rocking and straight moving link mechanism 170A is rocked, rotating the shaft 168 at a suitable angle to move the transfer pedestal 156 vertically by the action of another link mechanism 166 previously described.

In the embodiment, though the linear heater 158 and plate heater 160 are secured integrally to the transfer pedestal 156, they are each controlled by temperature controllers (not shown) separately to keep suitable temperatures.

Reason for controlling the heater temperature separately is to enabling a delicate adjustment depending upon characteristics or the like of the heat adherent resin layer formed on the covering material 14.

Now, operating conditions of the adhesion machine of the covering material will be explained with reference to time charts shwon in Fig. 11.

A prescribed amount of continuous raw paper 10a is transferred by the transfer sprockets 106 of the continuous paper tranfer unit 102.

21 The adhesive portion transfer table 118, in the present embodiment, is moved from the downstream side to the upstream side of the continuous raw paper 10a.

While, as the continuous sheet 14a of the covering material is transferred from the reel 122 by the covering material transfer unit 120, the covering material detector 124 detects a detecting mark, an arrow in this embodiment, formed on the continuous sheet 14a of the covering material,and by the detecting signal of the covering material detector 124, the continuous sheet 14a is stopped temporarilly as well as the adhesive portion transfer table 118. At this time, the covering material cutter 126 is actuated and the cutter blades 130a and 130b cut the continuous sheet 14a of the covering material into a suitable size, that is, a sheet of covering material 14 by_ the action of cum groove in the disc 142.

The front end of the covering material 14 cut into the suitable size by the covering material cutter 126 is positioned at the optimum location on the continuous raw paper 10a, pressed and heated linearly in the breadthwise direction of the continuous raw paper 10a by the lineal pressing and heating device 152 forming the pressing and heating unit 150 to adhere primarily to the continuous raw paper 10a.

Then, simultaneously with pressing and heating, the 22 continuous raw paper 10a is transferred by a fixed distance, corresponding approximately to the length of the covering material 14 in this embodiment, to the downstream side by the action of continuous paper transfer unit 102. That is simultaneously, with pressing and heating of the covering material 14 and postcard material 12 which were positioned under the flat pressing and heating device 154 in the previous cycle, the covering material 14 is transferred by the prescribed distance as the continuous raw paper 10a moves to the downstream side.

After the adhesive portion transfer table 118 has moved by a prescribed amount on rails 174, the lineal pressing and heating device 152 and flat pressing and heating device 154 are again detached from the adhesive portion transfer table 118 by the action of cum groove in the disc 172 and positioned thereabove. At the same time, the lineal pressing and heating device 152 and flat pressing and heating device 154 are moved together with the adhesive portion transfer table 118 inversely to the flow of continuous raw paper 10a, or to the prescribed position on the original upstream side. At this time, the press roller 162 presses the covering material 14 while rotating.

Then, at the front end position of the following covering material 14 transferred in the next cycle through cutting and other processes of the continuous sheet 14a of the covering materials, the adhesive portion transfer table 118 and the linear pressing and heating device 152 and flat pressing and heating device 154 forming the pressing and heating unit 150 are reengaged. At this time, the covering material 14 transferred in the previous cycle is positioned under the flat pressing and heating device 154. The continuous raw paper 10a adhered with the front end of the covering material 14 of the next cycle is transferred by a prescribed distance by the action of the continuous paper transfer unit 102, and at the same time the front covering material 14 transferred previously in the earlier cycle is pressed and heated by the flat pressing and heating device 154.

That is, when the covering material 14 adhered at its front end is positioned under the flat pressing and heating device 154, initial upstream position, which is pressed to the surface of the adhesive portion transfer table 118 by the action of cum groove formed in the disc 172 to press and heat the covering material 14.

Meanwhile, the transferring distance of the continuous raw paper 10a is restricted by a pulsesent-from the encoder disposed on the continuous paper transfer unit 102, and transfer of the covering material transfer unit 120, covering material cutter 126 and pressing and heating unit 150 is controlled by a central processing 24 unit 176. However, the continuous raw paper 10a is designed not to advance reversely in response to the backward movement of the adhesive portion transfer table 118 and the linear pressing and heating device 152 and flat pressing and heating device 154 of the pressing and heating unit 150.

The pressing and heating unit 150 thus repeats a cycle of forward movement, reflection point (downstream side), backward movement and reflection point (upstream side), and the covering material 14 is adhered suitably to the surface of the postcard material 12 constituting the continuous postcard 10 as shown in Fig. 1.

The continuous postcard 10 thus covered with the covering material 14 partly is folded suitably, and the postcard by separating the_cotinuous postcard 10 is put in the post.

In this covering material 14 is adhered, the first heat adherent resin layer 24 is adhered strongly to the base material 18 and the suppression layer 20, and is adhered weakly to the postcard material 12. Thus, as shown in Fig. 12A and Fig. 12B, the covering material 14 can be peeled off relatively easily from the postcard material 12 by cutting it. Meanwhile, the covering material 14 can be peeled off relatively easily from the postcard material 12 without cutting it. Then, the lottery part 13a and the confidential 25 matter 13b on the surface of the postcard material 12 can be seeing.

Fig. 13A is a perspective view showing a variation of the postcard piece shown in Fig. 3A and Fig. 3B, and Fig. 13D is a sectional view thereof. In this embodiment, cuts 26a and 26b forming with parforations are formed specifically in the upside and the downside of the base material 18, the supprssion layer 20, the primer layer 22 and the first heat adherent resin layer 24. The cuts 26a and 26b are formed by a perforator included a cutter roll so-colded die roll or by a perforator included a die cutter having a cutter blade.

In this embodiment, when the center portion of the covering material 14 in the up-and-down direction is peeled off, as shown in Fig. 14A and Fig. 14B, the center portion can be peeled off relatively easily from the postcard material 12 by cutting the covering material 14 at the cuts 26a and 26b. Then, the lottery part 13a and the confidential matter 13b on the surface of the postcard material 12 can be seeing.

Fig. 15A ias perspective view showing a separate variation of the postcard piece shown in Fig. 3A and Fig. 3B, and Fig. 15B is a sectional view thereof. In this embodiment, a separate cut 26c is formed specifically in the base material 18, the suppression layer 20, the primer layer 22 and the first heat adherent resin layer 24 on the inside of 26 the cut 26b. The cut 26c is formed by a die roll together with the cuts 26a and 26b. Furthermore, a half circle cut portion 27 is formed at one end of the base material 18, the suppression layer 20, the primer layer 22 and the first heat adherent resin layer 24 in between the cuts 26b and 26c.

In this embodiment, when the center portion of the covering material 14 in the up-and-down direction is peeled off, as shown in Fig. 16A and Fig. 16B, a narrow portion between the cuts 26b and 26c is peeled off, first. In this case, the narrow portion between the cuts 26b and 26c can be peeled off easily by hooking a finger to the cut portion 27. Then, the lottery part 13a and the confidential matter 13b can be seen by bending the center portion of the covering material 14 in the up-and-down direction at the cut 26a or by cutting it at the cut 26a.- Meanwhile, in the embodiment shown in Fig. 15A and Fig. 15B, a projection extending to the outside in between the cuts 26b and 26c may be formed in place of the cut portion 27. Thus, the narrow portion of the covering material 14 is peeled off more easily by hooking the projection.

Also, a center portion of the covering material 14 may be formed so as to peel off from the postcard material 12 by forming a cut along the surrounding the base material 18, the suppression 20, the primer layer 22 and the first heat adherent resin layer 24, 27 Fig. 17A is a perspective view showing a postcard piece as a separate embodiment of the present invention, Fig. 17B is a sectional view thereof.

In this embodiment, specifically, a second heat adherent resin layer -28 having a strong adhesion is formed partially on the surface of the first heat adherent resin layer 24. The second heat adherent resin layer 28 is formed in a fixed width at both sides of the postcard material 12 in a length direction, that is, at the upside and downside of the covering material 14. Moreover, the second heat adherent resin layer 28 is formed_ in spots at both sides of the postcard material 12 in a width direction, that is, at the right side and left side of the covering material 14. The second heat adherent resin layer 28 is formed partially by coating a heat adherent r_esin having a strong adhesion comprises, for example, adhesives of EVA group, stylenebutadiene-stylene copolymer, s tylene-i soprene -style ne copolymer or the like on the surface of the first heat adherent resin layer 24. In the material of the second heat adherent resin layer 28, for example, amount of the tackifier is increased or the release agent is not mixed, compared-with the material of the first heat adherent resin layer 24. Meanwhile, the second heat adherent resin layer 28 may be formed alone the upside and downside of the covering material 14 or the right side and left side thereof on the surface of 28 the first heat adherent resin layer 24. In this case, the second heat adherent resin layer 28 may be formed in a fixed width or spots.

Next, a method of manufacturing the covering material 14 will be explaned reffering Fig. 18.

Processes for forming the suppression layer 20, the primer layer 22 and the first heat adherent resin layer 24 on the base material 18 are as same as the processes shown in Fig. 4.

Then, the base material 18 formed with the first heat adherent resin layer 24 and so on is led to a heat adherent resin coater 46 for printing or coating the heat adherent resin 28a having the strong adhesion. The heat adherent resin coater 46 is a printing or coating machine utilizing known printing and coating methods such as a typographic printing, gravure printing, silk screen printing, offset printing or the like. By the heat adherent resin coater 46, the heat adherent resin 28a having the strong adhesion is printed or coated partially on the surface of the first heat adherent resin layer 24.

The base material 18 onto which the first heat adherent resin 28a is printed or coated is led to a dryer 48, whereby the heat adherent resin 28a is dried and the second heat adherent resin layer 28 is formed.

Thus, a continuous sheet 14a of the covering material 14 29 is formed with the base material 18, the suppression layer 20, the primer layer 22, the first heat adherent resin layer 24 and the second heat adherent resin layer 28.

The continuous sheet 14a of the covering material is wound round the takeup roller 44 again.

In this embodiment, to the postcard material 12, the covering material 14 is adhered strongly at a portion where the second heat adherent resin layer 28 is formed, and is adhered weakly at a portion where the second heat adherent resin layer 28 is not formed.

Thus, as shown in Fig. 19A and Fig. 19B, at the portion where the second heat adherent resin layer 28 is not formed, the base material 18, the suppression layer 20, the primer layer 22 and the first heat adherent resin layer 24 can be relatively easily cut and. peeled off from the postcard material 12. Further, the base material 18, the suppression layer 20, the primer layer 22 and the first heat adherent resin layer 24 can be easily peeled off at the portion where the second heat adherent resin layer 28 is formed in spots. Then, the lottery part 13a and the confidential matter 13b on the surface of the postcard material 12 can be seeing. -._ Fig. 20A is a perspective view showing a variation of the postcard piece shown in Fig. 17A and Fig. 17B, and Fig. 20B is a sectional view thereof. In this embodiment, cuts 26a and 26b forming with parforations are formed specifically along the surrounding the second heat adherent resin layer 28 in the upside and the downside of the base material 18, the supprssion layer 20, the primer layer 22 and the first heat adherent resin layer 24. The cuts 26a and 26b are formed by a perforator included a cutter roll so-colded die roll or a perforator included a die cutter having a cutter blade.

In this embodiment, as shown in Fig. 21A and Fig. 21B, the base material 18, the suppression layer 20, the primer layer 22 and the first heat adherent resin layer 24 can be peeled off relatively easily from the postcard material 12 by cutting at the cuts 26a and 26b, in a portion where the second heat adherent resin layer 28 is not formed. Then, the lottery part 13a and the confidential matter 13b on the surface of the postcard material 12 can be seeing.

Fig. 22A is a perspective view showing a separate variation of the postcard piece shown in Fig. 17A and Fig. 17B, and Fig. 22B is a sectional view thereof. In this embodiment, a separate cut 26c is formed specifically in the base material 18, the suppression layer 20, the primer layer 22 and the first heat adherent resin layer 24 on the inside of the cut 26b. Furthermore, a half circle cut portion 27-is formed at one end of the base material 18, the suppression layer 20, the primer layer 22 and the first heat adherent resin layer 24 in between the cuts 26b and 26c.

In this embodiment, when the center portion of the 31 covering material 14 in the up-and-down direction is peeled off, as shown in Fig. 23A and Fig. 23B, a narrow portion between the cuts 26b and 26c is peeled off, first. In this case, the narrow portion between the cuts 26b and 26c is peeled off easily by hooking a finger to the cut portion 27. Then, the lottery part 13a and the confidential matter 13b can be seen by bending the center portion of the covering material 14 in the up- and-down direction at the cut 26a or by cutting it at the cut 26a.

Meanwhile, in the embodiment shown in Fig. 22A and Fig. 22B, a projection extending to the outside in between the cuts 26b and 26c may be formed in place of the cut portion 27. Thus, the narrow portion of the covering material 14 is peeled off more easily by hooking the projection.

Also, a center portion _of the covering material 14 may be formed so as to peel off from the postcard material 14 by forming the second heat adherent resin layer 28 along the surrounding the covering material 14, and by forming a cut along the second heat adherent resin layer 28 in the base material 18, the suppression 20, the primer layer 22 and the first heat adherent resin layer 24.

Also, the lottery part 13a and the confidential matter 13b may be formed on thesurface of the suppression layer 20 or the surface of the postcard material 12 when having the the suppression layer 20, may be formed on one main surface 32 1 of the base material 18 or the surface of the postcard material 12 when not having the suppression layer 20.

Meanwhile, as the example of base material 18, besides the aforesaid example, there are films of synthetic paper, cellophane, polyethylene, polyester, etc. or an aluminum foil and the like. However, relatively soft materials are preferably selected as the base material 18 such that when the covering material 14 is adhered to the postcard material 12, it will not come off easily therefrom against the adhesions of the first heat adherent resin layer 24 and the second heat adherent resin layer 26.

When the aluminum foil and the like having a good suppressiveness is selected as the base material 18, the suppression layer 20 is not necessary. In this case, the primer layer 22 is formed-on one main surface of the base material 18.

Also, on the base material 18, any suitable printing which fits to properties of the postcard may be performed, or when the continuous material is used as aforesaid embodiments, for example, a detecting mark(arrow) for detecting feeding pitches of the base material 18 may be printed with a black color or the like.

While the present invention has been particularly described and shown, it is to be uhderstood that it is for the purpose of illustration and example and not for 33 1 limitation. The spirit snd scope of the invention is there- fore to be determined solely by the accompanying claims.

7 34 1

Claims

WHAT IS CLAIMED IS:

1. A sticking material comprising:

base material having a suppressiveness; primer layer formed on one main surface of said base material; and a first heat adherent resin layer formed on a surface of said primer layer.

2. A sticking material in accordance with claim 1, which further comprises a second heat adherent resin layer having a strong adhesion formed on a part of surface of said first heat adherent resin layer.

3. A sticking material comprising:

base material; suppression layer having a suppressiveness formed on one main surface of said base material; a primer layer formed on a surface of said suppression layer; and a first heat adherent resin layer formed on a surface of said primer layer.

4. A sticking material in accordance with claim 3, which further comprises a second heat adherent resin layer having a strong adhesion formed on a part of surface of said first heat adherent resin layer.

5. A manufacturing method of a sticking material comprising; a process for preparing a base material having a suppressiveness; a process for forming a primer layer on one main surface of said base material; and a process for forming a first heat adherent resin layer on a surface of said primer layer.

6. A manufacturing method of a sticking material in accordance with claim 5, which further comprises a process for forming a second heat adherent resin layer having a strong adhesion on a part of surface of said first heat adherent resin layer.

7. A manufacturing method of a sticking material comprising:

process for preparing a base material; process for forming a suppression layer having a suppressiveness on one main surface of said base material; a process for forming a primer layer on a surface of said suppression layer; and a process for forming a first heat adherent resin layer on a surface of said primer layer.

8. A manufacturing method of a sticking material in accordance with claim 7, which further comprises a process for forming a second heat adherent resin layer having a strong adhesion on a part of surface of said first heat adherent resin layer.

36 Published1989atThe Patent Office, State House. 66 Hip. Holborn. London WClE 4TP-Furtnerc:)pies maybe obtained from The Patentoffice Sales Branch. St Mary Cray. Orpington. Kent BR-5 3RD- Printed by Multiplex techniques ltd, St Mary Cray. Kent. Con- 1/87