JPH0444897A - Manufacture of repeel-off postcard - Google Patents

Abstract

PURPOSE:To ensure that the number of occurrences of sheet cut or sheet jam is minimized and stable operation is made possible by enabling one of sheets to be guided only by a one side marginal part for cutting. CONSTITUTION:A repeel-off postcard has an address, a name recorded in a non-junctioned part 8 and confidential data recorded in a junctioned part 9 using a line printer. A pressure-sensitive or a non-adhesive sheet is processed by background printing, printing using a pressure-sensitive inhibitive ink if necessary, perforation and marginal cutting. After that, the sheet is printed as a Z folded continuous sheet or a web using a line printer, then is processed using a pressure sealer to become a postcard. The sheet which is guided by one side marginal part in the pressure sealer includes a sheet with both side marginal parts, when it is printed by the line printer, one of which is cut using a separate device or a device mounted on the sealer before pressure application or bending. The pressure processing is performed at a pressure of 50 to 1000kg/cm<2> using an ordinary pressure roll.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides a removable postcard that can be bonded under pressure to hide information and that can be read again by peeling off the bonded portion. This relates to a manufacturing method.

[Conventional technology]

A method in which two pressure-sensitive adhesive sheets each having an adhesive layer provided on a support are pressure-joined with the adhesive layers facing each other, or at least a portion on the adhesive layer of the pressure-sensitive adhesive sheet. A method of pressure bonding using a pressure-sensitive adhesive sheet whose adhesion properties are adjusted by providing an adhesion-suppressing material layer in the area, or a method of bonding the pressure-sensitive adhesive sheet and a non-adhesive sheet with the adhesive layer. In this method, information recorded on the bonded surface is hidden using a pressure-sensitive adhesive sheet, and when necessary, by peeling off the bonded surface, the information on that surface can be reused. Postcards designed to read information are disclosed in Japanese Patent Application Nos. 138874, 1-226903, and 1-. 2
No. 39028, No. 1-244682, No. 1-2708
．． 49, etc., and is expected to become popular due to its advantages such as being able to mail confidential information for the price of a postcard and containing more information than a regular postcard.

Among such postcards, the address as shown in Figure 1,
In order to simultaneously record information that does not need to be hidden, such as names, and information that needs to be hidden, such as personal information, using a line printer,
Alternatively, as shown in Figure 2, in order to provide a non-bonded part in a part of the postcard to facilitate the initial peeling of the joined postcard, a continuous sheet (with parts of the sheet regularly punched out) can be used.
(Fig. 3) and regular form paper (Fig. 4), cut the sheets as shown in Fig. 5, and then press and join them, or press and join them and then cut the sheets as shown in Fig. 5. Common.

However, such a method requires special punching equipment to regularly provide punched windows in the sheet.

In addition, because sheets with punched windows have weak paper strength or are easily caught, paper breaks or paper jams often occur when processing with line printers or pressure sealers, making stable operation difficult. Can not.

[Problem to be solved by the invention]

The present invention provides a method that enables stable operation by minimizing paper breakage and paper jams in a line printer or pressure sealer treatment when manufacturing peelable postcards having non-bonded parts. be.

[Means to solve the problem]

As a result of study, the present inventors found that when creating a removable postcard having a non-joined portion as shown in FIG. 1 or 2 using a continuous sheet having a marginal, at least one sheet has a marginal It was discovered that extremely stable operation could be achieved by using a method of guiding through a hole.

The present invention provides a method for producing a removable postcard, in which pressure-sensitive adhesive sheets or a pressure-sensitive adhesive sheet and a non-adhesive sheet are faced to each other and guided at the margin, and the sheets are cut and pressure-bonded using a pressure sealer. A method for producing a removable postcard, characterized in that at least one of the sheets is cut by being guided by a marginal on only one side.

[Effect]

The present invention will be specifically explained with reference to the drawings.

FIG. 1 is a perspective view showing an example of a removable postcard obtained by the present invention. This is a removable postcard obtained by bonding a concealing sheet made using a pressure-sensitive adhesive sheet with an adhesive layer on a support to a postcard made of a non-adhesive sheet. The address and name are recorded on the unjoined part, and confidential data is recorded on the joined part using a line printer.

FIG. 2 is also a perspective view showing an example of a postcard obtained by the present invention. This consists of a concealing sheet made using a pressure-sensitive adhesive sheet with an adhesive layer provided on a support, and a pressure-sensitive adhesive sheet made with an adhesive layer and an adhesive suppressant layer provided on a support. A removable postcard obtained by joining two postcards,
A non-bonded portion is provided to facilitate initial peeling.

FIGS. 6 to 8 show an example of the method for producing a removable postcard of the present invention. FIG. 6 shows a Z-folded continuous sheet of a wide non-adhesive sheet having marginal holes on both sides, and FIG. 7 shows a Z-folded continuous sheet of a narrow pressure-sensitive adhesive sheet having marginal holes on only one side.

The pressure-sensitive adhesive sheet shown in Figure 7 is stacked so that the adhesive layer of the sheet faces the continuous sheet shown in Figure 6, guided into a pressure sealer at the margin, and cut into sheets as shown in Figure 8. After (separating the marginal portion and the horizontal perforations), the sheet is pressed under a pressure of 300 kg/cm 2 to produce a removable postcard as shown in FIG.

Furthermore, as shown in FIGS. 9 to 11, it is also possible to guide both sheets to be joined through a marginal hole on one side. That is, a wide Z-fold continuous sheet (Fig. 9) and a narrow Z-fold continuous sheet of pressure-sensitive adhesive sheet (Fig. 10) are placed in a pressure sealer with marginal holes on only one side so that their margins overlap. It is also possible to produce a removable postcard as shown in FIG. 1 by cutting the sheet as shown in FIG.

Further, FIGS. 12 and 13 show another embodiment of the present invention, in which a removable postcard is made from two pressure-sensitive adhesive sheets. A Z-folded continuous sheet of pressure-sensitive adhesive sheet having marginal holes on only one side as shown in Fig. 12 is guided into a pressure sealer while being folded in the direction of the arrow around the vertical perforation to form a marginal hole as shown in Fig. 13. A removable postcard as shown in FIG. 1 can also be produced by pressing the sheet under a pressure of 300 kg/cm'' after separating the sections and transverse perforations.

In this way, the present invention can efficiently prevent paper breaks and paper jams by guiding the sheet to the sheet cutting mechanism using only one side of the marginal.

Note that sheet cutting may be performed after pressure bonding, but in the case of high-speed production, it is preferable to cut the sheets first because the stacked sheets are likely to be misaligned during pressure bonding.

Further, the sheet used is not limited to a continuous Z-folded sheet, and may of course be a rolled-up sheet.

The pressure adhesive sheet used in the present invention is usually formed by providing an adhesive layer on a support, and the adhesive includes:
For example, ethylene-vinyl acetate resin, acrylic resin,
Examples include vinyl chloride resins, vinylidene chloride resins, synthetic rubber resins, and natural rubber resins, among which those having a glass transition point of 1100°C to 0°C are preferred.

Pigments are usually added to the adhesive layer to improve blocking resistance, such as silica, kaolin, clay, calcium carbonate, aluminum hydroxide, zinc oxide,
Examples include titanium oxide, melamine resin particles, benzoguanamine resin particles, and starch particles. The blending ratio of the pigment is 10 to 500% by weight based on the adhesive.

The coating liquid used to form the adhesive may be either aqueous or organic solvent-based, but usually an aqueous coating liquid containing the above-mentioned adhesive as an emulsion is used.

In addition, the adhesive layer may further contain casein, agar, gum arabic, sodium alginate, starch, oxidized starch, etherified starch, esterified starch, carboxymethylcellulose, hydroxyethylcellulose, polyvinyl alcohol, polyvinylpyrrolidone, polyacrylic acid, etc., if necessary. Water-soluble polymers, latex such as styrene-butadiene latex, acrylonitrile-butadiene latex, rosin resins and their derivatives, terpene resins, coumaron indene resins, xylene resins, alkylphenol resins, C
Tackifiers such as 2- to C7-based petroleum resins, various paraffins, waxes, fatty acids and their derivatives, high alkaline earth metal soaps, mold release agents such as silicones, adhesive-containing capsules and oils to enhance adhesive strength. Auxiliary agents such as capsules, antistatic agents, thickeners, dispersants, preservatives, antioxidants, and antifoaming agents may be added.

The adhesive layer is formed by applying a coating liquid containing the above components using a coating method such as an air knife coater, a blade coater, or a bar coater, or a printing method such as screen printing or flexographic printing 1 so that the dry weight is usually 2 to 20 g/rrf. It is formed by coating it on a support.

In the present invention, in order to adjust the adhesiveness of the adhesive layer,
An adhesion suppressing material layer can also be provided if necessary. Examples of adhesion inhibitors include casein, polyvinyl alcohol, ethylene-maleic anhydride copolymer, styrene-maleic anhydride copolymer, ethylcellulose, ethylhydroxyethylcellulose, acetylcellulose, cellulose acetate propionate, cellulose acetate butyrate, Solutions obtained by dissolving film-forming substances such as nitrocellulose, boribi, rubutyral, polyvinyl chloride, and polystyrene in water or organic solvents, or ionization of trimethylolpropane triacrylate, pentaerythritol triacrylate, hexanediol diacrylate, etc. Methods such as letterpress printing, offset printing, flexographic printing, etc., using a radiation-curable substance as an ink, or using an ink containing a pigment (as described above), a photopolymerization initiator, and a mold release agent as necessary. It is formed by printing on the adhesive so that the dry weight is 0.1 to 5 g/rrf.

The support used for forming the pressure-sensitive adhesive sheet or the non-adhesive sheet used as necessary in the present invention includes wood-free paper, impregnated paper, synthetic paper, coated paper for printing (slightly coated paper, (coated paper, art paper, cast paper, etc.), coated paper for recording (thermal recording paper, pressure-sensitive copying paper, electrostatic recording paper, thermal transfer image receiving paper, etc.), laminated paper, metallized paper, etc. are used. Note that the paper making method used is not particularly limited, and a used paper recycling valve may be included.

The pressure-sensitive adhesive sheet or non-adhesive sheet used in the present invention is usually subjected to base printing by letterpress printing, offset printing, flexo printing, etc., printing with adhesion suppressing ink if necessary, and perforation and marginal processing. After that, it is printed as a continuous Z-folded sheet or rolled up using a line printer and then processed using a pressure sealer to become a postcard.

Line printers include wet or dry electrophotography, thermal transfer, thermal recording, electrostatic recording, electrolytic recording,
Machines with printing methods such as the impact method can be used.

Further, the pressure sealer used in the present invention may be of any type as long as it guides the sheet at the margin and has the function of pressure processing, and is usually used to slit, cut, fold, or press the sheet. A machine equipped with a device capable of performing such processing is used.

In the present invention, the sheet guided by one side margin in the pressure sealer is provided in a separate device or a sealer before the sheet having margins on both sides is subjected to pressure treatment or folding treatment when printed by a line printer. This also includes those in which the marginal of one side is cut using a machine that has been used.

In addition, the pressure treatment is usually performed using a pressure roll at a pressure of 50 to 100
It is carried out under a pressure of 0 kg/cI12.

Examples of the present invention will be described below, but it goes without saying that the present invention is not limited only to these examples. In the examples, unless otherwise specified, "part" means part by weight, and "%" means weight %.

Example (Creation of concealment label) 100 parts of acrylic ester emulsion (manufactured by Japan Synthetic Rubber ■, product name: AH-923) was used as an adhesive.
Dry weight), 100 parts of synthetic silica (manufactured by Mizusawa Kagaku Kogyo ■, trade name: Mizukasil P-832) as a pigment, and 40 parts of gelatinized starch were mixed to adjust the solid content concentration to 30%, and the coating liquid was mixed at 70 g/n. (The dry weight on one side of the impregnated paper is 8 g/n.
A pressure-sensitive adhesive sheet was obtained by applying the adhesive to obtain a pressure-sensitive adhesive sheet. Next, after printing a background pattern such as a ground pattern on the front and back sides of this sheet, perforations and a margin are added on one side, and the concealment label is rolled up into a sheet half the size of a postcard (the sheet shown in Figure 7). ) was obtained.

(Creating a postcard) After printing the base on the front and back sides of 200 g/rrf double-sided art paper, make perforations and margins on both sides, and make a Z-fold sheet as shown in Figure 6, with a sheet of the same size as the postcard as one unit. Obtained.

(Creation and evaluation of removable postcards) Personal information such as address, name, data, etc. is printed on the surface of the postcard using an electrophotographic line printer, and then the above-mentioned concealing label is applied on the postcard with an adhesive layer. Place the postcard with both margins facing downward and the label with one margin into the pressure sealer, stacking them so that the margins overlap, and first align the margins and perforations as shown in Figure 8. and further 300 kg/c+
By applying a pressure of +2, a removable postcard with a portion of the data hidden as shown in the perspective view of FIG. 1 was obtained.

The pressurized sealer was operated at a rate of 20,000 copies/hour, and the paper was extremely stable with no tearing or paper jams.

Comparative Example (Creation of Concealment Label) A pressure-sensitive adhesive sheet obtained in the same manner as in Example 1 was printed with a background pattern such as a ground pattern on the front and back sides, and then margins and perforations were made on both sides, and the sheet was cut using a punching machine. A portion of the tape was extracted to obtain a roll of a concealing label as shown in FIG.

(Creation of postcards) After printing the base on the front and back sides of 200g/rtf double-sided art paper, make both margins and perforations to create Z as shown in Figure 4.
I got a folded sheet.

(Creation and evaluation of removable postcards) Personal information such as address, name, data, etc. is printed on the surface of the postcard using an electrophotographic line printer, and then the above-mentioned concealing label is applied on the postcard with an adhesive layer. While stacking the paper so that it faces downward and so that both margins overlap, introduce it into the pressure sealer with both margins, first cut the margin and the perforation as shown in Figure 5, and then 3
A removable postcard with part of the data hidden was obtained by applying a pressure of 0.00 kg/cm'' as shown in the perspective view of FIG.

Although the pressure sealer was operated at a rate of 20,000 pieces/hour as in Example 1, paper breaks and paper jams frequently occurred.

[Effect] The method of the present invention made the operation of the pressure sealer extremely stable.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an example of a removable postcard obtained by the present invention, and FIG. 2 is also a perspective view showing another example of a removable postcard obtained by the invention. FIGS. 3 to 5 are diagrams showing a conventional continuous sheet guided to a pressure sealer at the margins on both sides. 6 to 8 and 9 to 11 show an example of the method for producing a removable postcard of the present invention. Figure 6 shows a Z-fold continuous sheet for postcards obtained by providing perforations and marginal holes on both sides, and Figure 7 shows a Z-fold continuous sheet for postcards obtained by providing perforations and marginal holes on one side of a pressure-sensitive adhesive sheet. It is a Z-fold continuous sheet. These two sheets are stacked, cut at the marginal portion and along the perforations as shown in FIG. 8, and then subjected to pressure treatment to obtain a removable postcard as shown in FIG. In addition, Figure 9 shows a Z-fold continuous sheet for postcards obtained by providing perforations and marginal holes on one side of a non-adhesive sheet.
FIG. 10 shows a Z-fold continuous sheet for concealment obtained by providing perforations and a marginal hole on one side of a pressure-sensitive adhesive sheet. Both sheets are cut at the marginal portion and perforation as shown in FIG. 11, and then subjected to pressure treatment to form a removable postcard as shown in FIG. FIGS. 12 and 13 show aspects of the present invention. Figure 12 shows the resulting Z-folded continuous sheet with perforations and a marginal hole on one side of the pressure-sensitive adhesive sheet.While folding this in the direction of the arrow, guide it into the pressure sealer at the marginal on one side. After cutting the marginal portion and the perforations as shown in the figure, a pressure treatment is performed to obtain a removable postcard as shown in FIG. 1...Removable postcard 2...Support 3...Adhesive layer 4...Pressure sensitive adhesive sheet 5...Concealing label 6...Non-adhesive sheet 7...Postcard
8...Non-joint part 9...Joint part 10
... Adhesion suppressing material layer 11 ... Punching window 12
... Marginal hole 13 ... Perforation 14 ... Z-fold sheet for concealment label 15 ... Z-fold sheet for postcard 16 ... Separation line F ... Perforation for folding

Claims (1)

[Claims] In a method for producing a removable postcard, in which pressure-sensitive adhesive sheets or a pressure-sensitive adhesive sheet and a non-adhesive sheet are opposed to each other and guided at the margin, and the sheets are cut and pressure-bonded using a pressure sealer, at least one of the sheets is A method for producing a removable postcard, characterized in that one sheet is cut by being guided by a marginal on only one side.