JP2013071759A - Envelope paper and sealed letter preparation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide sheet-like envelope paper having strength at a sealed part endurable against an external force during transportation and easy to open and folded into an envelope.SOLUTION: A pressure-sensitive adhesive 106 is provided on both edge portions in the width direction of the envelope paper 100, and remoistening glue 107 is provided thereinside, and an adhesion adjusting layer 400 adjusting adhesion is provided on a paper face to which the remoistening glue is bonded when folded into an envelope. The adhesion adjusting layer composed of a hard adhesive material includes a plurality of adhesion parts where the surface of the paper is exposed in a prescribed shape. Since the remoistening glue adheres to the envelope paper via the adhesion adjusting layer, an adhesion area is restricted to set the adhesion at a desired state. The peeling easiness needed for opening is compatible with the durability against the stress in handling required in transit.

Description

  The present invention relates to a sheet-like envelope paper that can be folded and processed into a sealed letter while wrapping the contents, and has a special structure such as a perforation for opening, while the sealed part has strength necessary for mailing and delivery. It is related with the envelope paper which can be easily extended to the original sheet-like envelope paper from the state of the sealed envelope. In addition, the present invention relates to an envelope creation apparatus that creates such an envelope sheet, prints the envelope sheet and the contents sheet, and folds them to enclose and seal the contents in the envelope. Is.

  Patent Document 1 below discloses an invention relating to a method of creating a sealed letter by folding it in three. Envelope sheets substantially similar to the sealed form used in the present invention are shown in FIGS. As shown in FIG. 18, the envelope paper 300 is formed by connecting three paper pieces of an upper paper piece 301, an intermediate paper piece 302, and a lower paper piece 303 with perforations. The address is written on the surface of the upper paper piece 301, and the contents are written on the surfaces of the middle paper piece 302 and the lower paper piece 303. On the surface of the middle paper piece 302 and the lower paper piece 303, a pressure-sensitive adhesive 305 is formed in a substantially U-shaped belt-like pattern along the outer shape of the two paper pieces excluding the perforations. There is no pressure-sensitive adhesive on the surface of the upper paper strip 301 that eventually becomes the outer surface. In addition, a printing pattern is formed on the back side of the upper paper piece 301, the middle paper piece 302, and the lower paper piece 303, or a print pattern for preventing the content from being seen through. A pressure-sensitive adhesive 305 is formed in a belt-like pattern on the back surface of the upper paper piece 301 and the middle paper piece 302 along the outer edges excluding the perforations and part of the sides. There is no pressure-sensitive adhesive on the back surface of the lower paper piece 301 which finally becomes the outer back surface.

  When the envelope paper 300 is formed into an envelope shape after the address name and contents are printed, the surface of the middle paper edge 302 and the surface of the lower paper edge 303 are combined as shown in FIG. Each pressure sensitive adhesive 305 is brought into contact with each other. Further, as shown in FIG. 19, the pressure sensitive adhesives 305 on both paper sides are brought into contact with each other with the back side of the upper paper side 301 and the back side of the middle paper side 302 aligned. In this state, the envelope paper 300 is in the shape of a tri-fold envelope, but the pressure sensitive adhesive 305 has not yet been bonded.

  Thereafter, as shown in FIG. 4 of Patent Document 1, the envelope is sandwiched between a pair of rollers having an axial dimension larger than the width of the envelope in the width direction, and conveyed while applying a strong pressure to the entire surface of the envelope. In FIG. 4 of Patent Document 1, pressure is applied to the entire surface of the envelope by two pairs of rollers longer than the width of the envelope. As a result, the pressure-sensitive adhesive in contact between the paper edges facing each other becomes sticky, and a sealed envelope, that is, a sealed letter is created.

  In the technology described above, a pressure sensitive adhesive that requires pressure is used to bond each piece of envelope paper in order to fold envelope paper to create a sealed letter. In addition, as an adhesive means, there is a method of applying an adhesive such as hot melt immediately before folding the envelope paper.

Japanese Patent No. 2521498

  When an adhesive such as hot melt is used as an adhesive means when folding envelope paper to create a sealed letter, the coating apparatus is complicated and expensive, and heating means are also required. Therefore, the installation location is greatly restricted, and maintenance work is also required.

  In the sealed letter making apparatus using the pressure sensitive adhesive described with reference to Patent Document 1 and FIG. 18 and FIG. 19, only the pressure is applied to the bonded portion, so maintenance is unnecessary. Since it is simpler than an apparatus using an adhesive such as hot melt, it can be a relatively small apparatus.

  However, in the envelope making apparatus using the pressure sensitive adhesive, the pressure applied to the bonded portion of the envelope is as large as about 1 ton / square centimeter, and in the above example, the bonded portion exists on the three to four sides of the rectangular envelope, A roller longer than the width of the envelope is necessary so that pressure can be applied to the entire envelope having a predetermined area (see FIG. 4 of Patent Document 1). If such a pressure roller is provided, the mechanical structure of the entire apparatus has to be robust, resulting in an expensive apparatus, and therefore has not become widespread as an office installation device.

  Also, in an envelope created using envelope paper as shown in FIGS. 18 and 19, the recipient does not tear the adhesive part irregularly to open it, but opens it in an orderly manner and changes it from the envelope shape to the original sheet shape. It may be necessary to return. For example, if the text is printed on the inside of the envelope paper or part of the envelope paper is a postcard for reply, peel off the four sides of the envelope sealed with the pressure sensitive adhesive and open it. This is because if the envelope paper is damaged during reading, the contents are difficult to read and used as a postcard. However, in order to open the envelope created using the envelope paper as shown in FIG. 18 and FIG. 19, the adhesive portions on both edges of the envelope along the perforations provided along both edges of the envelope Then, it is necessary to open the adhesive portion provided along the width direction on the other edge portion of the envelope, but it is not an easy task to peel only the adhesive portion without damaging the envelope paper. Even if an adhesive other than the pressure sensitive adhesive is used as the adhesive of this portion, the degree of difficulty of the operation is the same. Also, a perforation called an opening zipper that is easy to open can be provided along the width direction at the edge of the envelope, and when opening the paper, it can be opened without being damaged by cutting or separating it. However, providing such an opening structure has the following problems. That is, such a zipper must be compatible with both the ease of tearing required at the time of opening and the durability against stress required for handling at the time of mailing, but this involves a technical difficulty. . Also, in order to manufacture such complicated perforations, a dedicated perforation blade is necessary, which increases the manufacturing cost, and the area to be applied to the zipper cut-out portion presses down on the information posting area as a sealed letter There was also a problem of end.

  The present invention has been made in view of the problems as described above, and in a sheet-like envelope paper that is folded so as to wrap the contents to create a sealed letter, the strength necessary for mailing / delivery at the sealed portion is provided. On the other hand, it is possible to provide an envelope sheet that can be easily spread from the sealed envelope state to the original sheet-like envelope sheet without providing a special structure like a perforation for opening. It is aimed.

The envelope paper according to claim 1 is:
In an envelope paper that is applied to a sealed letter creation device that includes a sealed sealing part that creates a sealed letter by folding and sealing the envelope paper so as to contain the contents,
An adhesive that bonds the envelope paper bent and molded into the shape of an envelope;
An adhesive force adjusting layer that is formed in a predetermined pattern with a hardly adhesive material at a position corresponding to the adhesive, and that adjusts the adhesive force of the adhesive to the envelope paper;
It is characterized by having.

The envelope paper according to claim 2 is the envelope paper according to claim 1,
The adhesive force adjusting layer has a hard-to-adhere portion where the surface of the envelope paper is covered with the hardly-adhesive material, and an adhesive portion where the surface of the envelope paper is not covered with the hardly-adhesive material. The adhesive portion has a predetermined shape and is provided at a plurality of locations.

The envelope paper according to claim 3 is the envelope paper according to claim 2,
The adhesive and the adhesive force adjusting layer are formed at different positions on the envelope paper, respectively, and are configured to face each other when the envelope paper is folded and formed into an envelope.

The envelope paper according to claim 4 is the envelope paper according to claim 2,
The other adhesive is provided on the adhesive force adjusting layer, and the other adhesive is adhered to the surface of the envelope paper through the adhesive portion.

The sealed letter creating apparatus according to claim 5 is:
A printing unit that prints envelope sheets and contents as envelopes for each envelope to be created, a first conveyance path that conveys the envelope sheet printed by the printing unit, and the printing unit printed by the printing unit A second conveyance path for conveying the contents, and the first conveyance path and the second conveyance path are arranged at a position where the contents are merged, and the envelope paper is folded and sealed so as to enclose the contents. In a sealed letter creating apparatus comprising a sealed sealed part for creating a sealed letter by
The printing unit is provided with printing means for printing with a desired pattern on the envelope paper with a hardly adhesive material,
The encapsulating sealed portion includes pressure bonding means for performing sealing by applying pressure to both edges in the width direction of the envelope intersecting with the conveying direction, and inside the both edges in the width direction of the envelope An adhesive means for adhering the envelope paper is provided.

  According to the envelope paper described in claim 1, an adhesive that adheres and seals the envelope paper that is bent and molded into the shape of the envelope is provided, and a predetermined pattern of hardly adhesive property is provided at a position corresponding to the adhesive paper. An adhesive force adjusting layer made of a material was provided. Since this adhesive adheres to the envelope paper through an adhesive force adjusting layer having a predetermined pattern, the adhesive area to the envelope paper is regulated, and as a result, the adhesive force to the envelope paper can be set to a desired state. Therefore, it is possible to achieve both the ease of peeling required at the time of opening and the durability against stress in handling required at the time of mailing. In addition, with respect to the pressure-sensitive adhesive provided on both edges in the width direction of the envelope, both edges can be sealed with a simple configuration using a smaller pressure roller than conventional ones.

  According to the envelope paper described in claim 2, when the envelope paper is folded into an envelope shape, the adhesive is in an insufficiently bonded state that is easily peeled off from the difficult-to-adhere portion of the adhesive force adjusting layer. However, the adhesive portion is bonded to the surface of the envelope paper that is not covered with the hardly adhesive material with the desired adhesive force of the adhesive. Since this adhesive part is provided in multiple places with a predetermined shape, each adhesive part exerts a predetermined adhesive force according to its shape and area, and the total of the plurality of individual adhesive forces Adhesive strength.

  According to the envelope paper described in claim 3, since the adhesive and the adhesive strength adjusting layer are provided at different positions on the envelope paper, the adhesive and the adhesive strength adjusting layer are stacked at the same position on the envelope paper. Compared with the case of forming, it is not necessary to set the positioning accuracy high, and the manufacturing is easy.

  According to the envelope paper described in claim 4, since the adhesive is provided on the adhesive force adjustment layer, the area of the area where the printed information can be read more easily in the entire area of the envelope paper. Can take. In addition, in the case where the adhesive is provided directly on the envelope paper, depending on the type of the adhesive, the paper may be deformed in the process of exerting the adhesive force. Since the adjustment layer is provided from above, the force applied to the paper in the process of exerting the adhesive force is reduced, and the effect of reducing the deformation of the paper is obtained.

  According to the envelope creation apparatus described in claim 5, the common printing unit that prints on the envelope sheet and the contents alternately prints and discharges the envelope sheet and the contents for each envelope to be created. And the sealed envelope part provided in the position which conveys the printed envelope paper by a 1st exclusive conveyance path, conveys the printed content by a 2nd exclusive conveyance path, and both conveyance paths merge Thus, the envelope paper and the contents can be combined without mistake, and the envelope paper can be folded and sealed so as to enclose the contents, thereby creating a sealed letter.

  According to the envelope creation apparatus, there is no need to apply pressure to the entire surface of the envelope in the process at the encapsulating sealing portion, and the pressure-bonding means are pressure-sensitive only at both edges in the width direction of the envelope intersecting the conveying direction. By adding the pressure, pressure-sensitive adhesives at both edges in the width direction of the envelope paper can be pressed to exert an adhesive force for sealing.

  Further, in the encapsulating sealed portion, the envelope paper can be adhered to the inner portion of the envelope in the width direction by an adhesive means that requires less pressure than the crimping means. Furthermore, since the printing means provided in the printing unit can print on the envelope paper in a desired pattern with the hardly adhesive material, it can be used for manufacturing the envelope paper having the adhesive force adjusting layer.

It is a figure of the surface of the envelope paper which concerns on 1st Embodiment. It is a figure of the back surface of the envelope paper which concerns on 1st Embodiment. It is a figure which shows the structural example of the adhesive force adjustment layer provided in the envelope paper which concerns on 1st Embodiment. It is a figure which shows the folding process (1) of the envelope paper which concerns on 1st Embodiment. It is a figure which shows the folding process (2) of the envelope paper which concerns on 1st Embodiment. In 1st Embodiment, the folding process of an envelope paper is completed, and it is sectional drawing which shows the state just before adhering another adhesive agent. It is a typical perspective view which shows a part of structure of the enclosure sealing part in the sealed letter preparation apparatus of 1st Embodiment, and its effect | action. It is typical sectional drawing which showed the flow of the envelope in the structure of the sealed letter preparation apparatus which concerns on 1st Embodiment, and the apparatus with the arrow. It is the typical sectional view which showed the structure of the sealed letter preparation device concerning a 1st embodiment, and the flow of the contents in the device with the arrow. It is typical sectional drawing which showed the structure of the sealed letter preparation apparatus which concerns on 1st Embodiment, the sealing operation | work in the same apparatus, and the discharge process of the envelope after sealing. It is a typical front view which shows the structure of the enclosure sealing part in the sealed letter preparation apparatus of 1st Embodiment. It is a typical front view which shows the watering process to the re-wet paste in the sealing part of the sealed letter preparation apparatus of 1st Embodiment. It is a typical front view which shows the adhesion process by the re-wet paste in the sealing part of the sealed letter preparation apparatus of 1st Embodiment. It is a typical perspective view which shows especially the positioning mechanism of an envelope in the enclosure sealing part of the sealed letter preparation apparatus of 1st Embodiment. It is a typical perspective view which shows the effect | action of the positioning mechanism of an envelope in the enclosure sealing part of the sealed letter preparation apparatus of 1st Embodiment. In 2nd Embodiment, the folding process of an envelope paper is completed, and it is sectional drawing which shows the state just before adhering another adhesive agent. In 3rd Embodiment, the folding process of an envelope paper is completed, and it is sectional drawing which shows the state just before adhering another adhesive agent. It is a figure which shows the structure and folding process (1) of the conventional envelope paper. It is a figure which shows the structure and folding process (2) of the conventional envelope paper.

1. 1st Embodiment (FIGS. 1-15)
(1) About sealed paper used in this sealed letter making device (Figs. 1-7)
FIG. 1 is a view showing the front surface (the side on which the address is printed) of the envelope paper 100 used in this embodiment, and FIG. 2 is a view showing the back surface. The envelope paper 100 is a rectangular paper in which four paper pieces, a first paper piece 101, a second paper piece 102, a third paper piece 103, and a fourth paper piece 104, are connected by folds. It becomes a four-fold envelope with the same shape as the outer shape of the piece of paper. Names A, B, C, and D are attached to the front surface of each piece of envelope paper, and names E, F, G, and H are assigned to the back of each piece of envelope paper. It shall be provided for convenience.

  As shown in FIG.1 and FIG.2, the 1st paper piece 101 (A, E) is a part which is folded inside the envelope and becomes the contents. In the present embodiment, the first paper piece 101 is provided with a perforation 220, and becomes a reply postcard by separating the perforation 220 after opening. The second paper piece 102 (B, F) is also a part that is folded into the envelope to become the contents. Text and images can be printed on the front and back surfaces B and F of the second paper piece 102 as necessary. Further, the surface C of the third paper piece 103 corresponds to the front of the envelope, and the address is printed. A text surface, an image, or the like can be printed on the back surface G of the third paper piece 103 as necessary, and the folded first paper piece 101 and second paper piece 102 are overlaid in this order. Further, the surface D of the fourth paper piece 104 corresponds to the back of the envelope, and the name / address of the sender is printed as necessary. A text, an image, or the like can be printed on the back surface H of the fourth paper piece 104, and the back surface H is superimposed on the front surface B of the folded second paper piece 102. Note that, as will be described later, the content enclosed in the envelope is sandwiched between the back surface G of the third paper piece 103 and the first paper piece 101 stacked thereon. As shown in FIG. 1, the width of the contents 40 is smaller than the interval between the pressure-sensitive adhesives 106 printed on both edges of the paper piece of the envelope paper 100. The length in the direction orthogonal to the width of the contents 40 is slightly smaller than the size of the envelope sheet 100 in the same direction, and the envelope formed from the envelope sheet 100 is folded by an appropriate number of folds. The size can be stored inside.

  As shown in FIG. 1, pressure sensitive adhesive 106 is provided at a plurality of locations at predetermined intervals on the surface A of the first paper piece 101 and the surface B of the second paper piece 102 along both edges in the width direction. . Note that the pressure sensitive adhesive is not provided on each of the surfaces C and D of the third paper side 103 and the fourth paper side 104. Further, as shown in FIG. 2, both the width direction of the back surface E of the first paper piece 101 and the back surface F of the second paper piece 102 are different from the pressure sensitive adhesive 106 of the front surfaces A and B. A pressure-sensitive adhesive 106 is provided at a plurality of locations at predetermined intervals along the edge. Further, as shown in FIG. 2, a pressure sensitive adhesive 106 is provided in a continuous band shape along both edges in the width direction on the back surface G of the third paper piece 101 and the back surface H of the fourth paper piece 102. The continuous band-shaped pressure-sensitive adhesive 106 is formed to protrude slightly from the back surface F of the second paper piece 102.

  Pressure sensitive adhesives are a type of adhesive that exerts adhesive force by bringing pressure sensitive adhesives provided on paper into close contact with each other and applying a predetermined pressure. Rubber-based adhesive materials are known. The arrangement pattern of these pressure-sensitive adhesives 106 is considered so that when each paper piece is folded and assembled into an envelope shape, the pressure-sensitive adhesives 106 of the corresponding paper pieces come to the same position and come into contact with each other. Yes. However, when a large number of envelope sheets 100 are stacked in the same vertical relationship, for example, with the front side facing up, the pressure-sensitive adhesive 106 on the front surface and the pressure-sensitive adhesive 106 on the back surface do not face each other and do not contact each other. It is like that. If the pressure-sensitive adhesives 106 are brought into contact with each other for a long period of time, there may be a problem that the pressure-sensitive adhesive 106 may naturally adhere depending on environmental conditions such as high temperature and high humidity without being pressurized. According to the paper 100, it is possible to prevent such a problem from occurring.

  As shown in FIG. 1, the surface B of the second paper piece 102 has two width positions on the inner side of both edges of the envelope in the width direction and close to the fold line with the third paper piece 103 in the width direction. Rewetting paste 107 is provided as another adhesive different from the pressure-sensitive adhesive in a belt-like pattern along the line. Further, as shown in FIG. 2, the back surface H of the fourth paper piece 102 is close to the side on the inner side of both edges in the width direction of the envelope and opposite to the fold line with the third paper piece 103. The adhesive force adjusting layer 400 is provided in a band-like pattern along the width direction. The position where the adhesive force adjusting layer 400 is provided is a position facing the rewet paste 107 when the envelope paper 100 is formed into an envelope. That is, when the envelope paper 100 is formed into an envelope, the rewet glue 107 is bonded to the fourth paper piece 104 via the adhesive force adjusting layer 400.

  The re-wet paste is, for example, arabic paste, and it has no adhesive strength when it is applied to the paper and dried. However, when wetted with water, the adhesive strength is generated. In this state, the required pressure can be applied to other paper. Both sheets are glued together. The pressure when adhering with rewet glue is effective even if it is considerably lower than the pressure required for pressure sensitive adhesives. Since both of the adhesive strengths are considerably higher than at least paper, even if two types of adhesives are used in one envelope, there is no problem due to the strength of the adhesive force. In place of the re-wetting paste, an adhesive that normally does not have an adhesive force but generates an adhesive force by some operation other than pressurization in the pressure-sensitive adhesive may be used. For example, adhesives that generate adhesive force by heat, light including ultraviolet rays, other physical means, other pressure-sensitive adhesives that exert adhesive force at a pressure lower than the pressure in the pressure-sensitive adhesive, or both sides A tape or the like may be used.

The adhesive force adjusting layer 400 is made of a material having low peelability and adhesiveness to silicon ink, wax (wax) used for coating paper, peelable varnish, and other various adhesives. Any layer may be used, and here, these substances and materials are collectively referred to as difficult-to-adhere materials. For example, as shown in FIG. 3, the formation pattern includes a difficult-to-adhere portion 402 in which the surface of the envelope paper is covered with the hardly-adhesive material, and an adhesion in which the surface of the envelope paper is not covered with the hardly-adhesive material. A plurality of adhesive portions 401 which are surfaces of the envelope paper 100 not covered with the hardly adhesive material are distributed in a predetermined shape and a predetermined arrangement. Specifically, in FIG. 5A, the circular adhesive portions 401 are arranged in two rows at equal intervals, and in FIG. 5B, the square adhesive portions are alternately arranged in three rows in the vertical direction. In the same figure (c), circular adhesive portions larger than those in FIG. 1 (a) are arranged at equal intervals in one row.
As described above, in the example of FIGS. 3A to 3C, the bonding portion is surrounded by the hardly-adhesive material. However, as shown in FIG. 3D, a rectangular shape in which the hardly-adhesive material is arranged at a predetermined interval is used. It is possible to adopt a configuration in which the gap between the rectangular patterns of the hard-to-adhere material is formed as a pattern and becomes a bonding portion 401 where the surface of the envelope paper 100 is exposed. Even in such a configuration, the continuous belt-shaped re-exemplification illustrated in FIG. When the wet paste 107 adheres, the re-wet paste 107 adheres to the paper with a constant area in the adhesive portion 401 that exposes the paper at regular intervals.

  In any of the cases shown in FIGS. 3A to 3D, the adhesive force adjusting layer 400 is a means for regulating and stabilizing the adhesion between the rewet glue 107 and the envelope paper 100 in a predetermined state. Therefore, when the two are brought into contact with each other, the formation range of the adhesive force adjusting layer 400 includes the formation range of the rewet paste 107 and is preferably larger than this. That is, it is preferable that the re-wetting paste 107 is bonded to the envelope paper 100 only at the bonding portion of the adhesive force adjustment layer 400 so that it does not protrude from the adhesive force adjustment layer 400 and irregularly adhere to the envelope paper 100. .

  As described above, in the adhesive force adjusting layer 400, the shape, area, and arrangement pattern of the adhesive portion 401, which is a hole or a gap provided in the hardly adhesive material on which the surface of the envelope paper 100 appears, are fixed. The wet glue 107 adheres to the envelope paper 100 only through the adhesive portion 401 having such a pattern, and the adhesive force hardly acts on the hardly adhesive material of the adhesive force adjusting layer 400. The above pattern of the adhesive portion 401 in the adhesive force adjusting layer 400 simultaneously solves two problems that are generally considered to conflict with ease of opening the envelope and ensuring strength that can withstand external force applied during mailing or delivery. Therefore, it is determined as follows.

  First, the adhesive strength of the rewet glue 107 in each adhesive part 401 is set to a predetermined value smaller than the strength of the envelope paper 100. As a result, when opening the sealed portion of the envelope paper 100 by the re-humidified adhesive 107 and the adhesive portion 401, the paper is adhered to the paper via the adhesive portion 401 if the paper is opened sequentially from the end in the width direction. The re-wet paste 107 can be peeled off from the paper without damaging the paper, or can be peeled off from the paper without causing damage to the paper even if the surface of the paper is partially removed. Therefore, the envelope paper 100 is not torn and can be neatly opened with a small force. The adhesive force of the rewet paste 107 in the adhesive part 401 is determined by the shape, size, arrangement interval, and the like of the adhesive part 401 formed on the adhesive force adjustment layer 400 if the type of the rewet glue 107 is the same. In addition, when performing an operation of continuously peeling a large number of dot-like adhesive portions 401 having a constant adhesive force from the end, the opener hears the continuous peeling sound of the adhesive portion 401, and Since the fingertip can feel a crisp continuous opening sensation, the certainty of opening can be confirmed by touch or hearing. Therefore, it is preferable that the arrangement pattern of the bonding portion 401 is regular because the continuous peeling sound and the opening interval described above can be obtained.

  Next, the total adhesive strength of the rewet glue 107 in all the adhesive portions 401 provided in the adhesive force adjusting layer 400 is larger than an external force that is considered to be applied to the sealed portion of the envelope during mailing or delivery. Is set. As a result, the possibility that the sealing portion of the envelope paper 100 by the re-wet paste 107 is opened by an external force applied during mailing or delivery is reduced.

  According to the envelope paper 100, when the sealed envelope is opened, the paper can be opened with little force without greatly damaging the information. Therefore, the information printed on the opened envelope paper 100 is easy to read. Even when there is a reply postcard or the like using a part of the envelope paper 100, the use of the postcard is not hindered. In addition, since the strength of the sealing portion by the re-wetting paste 107 is set as a whole, there is a possibility that an accident may occur in which the sealing portion by the re-wetting paste 107 is opened by an external force when mailing and delivering the envelope. Is small.

  In this embodiment, the rewet paste 107 is formed in two strips, and the adhesive strength adjusting layer 400 is formed in a single continuous strip. Therefore, the sealed portion of the envelope is opened. When doing so, it is possible to open the re-wet paste 107 that is adhered by putting a finger through the gap between the corresponding sheets of paper between the two strip-like re-wet pastes 107. However, as described above, the re-wet paste 107 can be continuously and cleanly peeled off from the end with a small force by the adhesive force adjusting layer 400. Therefore, it is not necessary to form the re-wet paste 107 separately in two. Alternatively, it may be formed in a single band shape like the adhesive force adjusting layer 400.

  As shown in FIGS. 1 and 2, perforations 220 continuous in the direction orthogonal to the width direction are formed at positions on both sides in the width direction of the envelope paper 100 and inside the pressure-sensitive adhesive 106. The envelope is easy to open. However, according to the present embodiment, when opening the envelope, first, the re-wetting paste 107 of the bonding portion 401 can be peeled off with a small force without damaging the paper. Then, if the pressure-sensitive adhesive 106 at both ends in the width direction is spread and peeled off, the operation of expanding the envelope into the original paper shape can be easily performed. Therefore, the perforations on both sides in the width direction are not essential.

  As shown in FIG. 2, the back surface F of the second paper edge 102 is positioned in the width direction at a position inside the both edges in the width direction of the envelope and close to the fold line with the third paper piece 103. A peeling layer 405 is provided in a band-like pattern along the line. The release layer 405 is formed of a difficult-to-adhere material like the adhesive force adjusting layer 400, but has a different function and purpose. When the envelope sheets 100 are stacked in the same vertical relationship, the release layer 405 is in a positional relationship facing the rewet paste 107 of the other envelope sheet 100. Without this release layer 405, when a large number of envelope sheets 100 are stacked in the same vertical relationship, the re-wetting paste 107 may be adhered to the other envelope sheet 100 depending on conditions such as humidity. . However, if the release layer 405 is provided, even if a large number of envelope sheets 100 are stacked, even if adhesiveness is generated in the rewet glue 107, the sheets do not adhere to each other. It can be easily peeled without damaging it.

A processing procedure such as folding in the case where the envelope paper 100 is formed into an envelope shape after the address name and contents are printed will be described.
As shown in FIG. 4, the first paper edge 101 is bent toward the back side of the envelope paper 100. The back surface E of the first paper side 101 overlaps the back side F of the second paper side 102, and the front surface A of the first paper side 101 appears on the back side of the envelope paper 100. Although not shown, the folded contents are placed on the surface A of the first paper edge 101, and the first paper edge 101, the second paper edge 102, and the contents are placed as shown by arrows in FIG. Further, it is folded so as to overlap the back surface G of the third paper side 103. As a result, the state shown in FIG. 5 is obtained. Here, after water is applied to the re-wet paste 107 provided on the front surface B of the second paper edge 102 by means not shown, the fourth paper edge 104 is placed on the back surface of the envelope paper 100 as indicated by an arrow in FIG. Bend to the side. This state is schematically shown in the cross-sectional view of FIG. The back surface H of the fourth paper side 104 overlaps the surface B of the second paper side 102, and the rewet glue 107 on the second paper side 102 faces the adhesive force adjustment layer 400 on the fourth paper side 104. Further, the pressure sensitive adhesives 106 on the paper edges 101 to 104 face each other or come into contact with each other. In this state, the envelope paper 100 becomes a quadruple envelope shape, but the pressure-sensitive adhesive 106 is not yet adhered. In FIG. 6, the contents 40 (not shown in FIGS. 4 and 5) are enclosed in a folded state.

Thereafter, the entire surface of the envelope 50 is sandwiched and conveyed by a roller (not shown) having a length equal to or larger than the width of the envelope, and the rewetting paste 107 on the second paper side 102 and the adhesive force adjusting layer 400 on the fourth paper side 104 are bonded. To do. Further, as shown in FIG. 7, the pressure-sensitive adhesive 106 at both edges in the width direction of the envelope 50 is adhered by the pressure roller 80. The pressure roller 80 is provided as a pair of upper and lower, and two pairs of right and left are provided, and both edges in the width direction of the envelope 50 in which the contents 40 are enclosed, that is, the direction intersecting the transport direction are sandwiched from above and below. Thus, sealing can be performed by exerting pressure to exert the adhesive force of the pressure-sensitive adhesive 106. As a result, the pressure-sensitive adhesive 106 in contact between the paper edges facing each other is made sticky, and an envelope 50 in which the contents are sealed is realized.
In addition, the sealing operation | work of the envelope paper 100 demonstrated above is automatically performed by the sealed letter preparation apparatus 1 of 1st Embodiment demonstrated below.

(2) About the mechanism of the sealed letter creation device (FIGS. 8 to 11)
The sealed letter preparation apparatus 1 according to the first embodiment performs processing for each sealed letter to be prepared. That is, necessary printing is performed in an appropriate order on the envelope paper 100 and the contents 40 which are sheet-like paper using the common printing unit 2. Then, the envelope paper 100 and the contents 40 after printing are fed into the encapsulated sealing unit 3 and are each conveyed along a separate conveyance path, and the envelope paper 100 is folded so as to be in the form of the envelope 50. At the same time, the contents 40 are folded as necessary. Then, the two are finally joined by the sealing means, and the contents 40 are sealed and sealed in the envelope 50, and are arranged and discharged as a completed sealed letter on the upper part of the apparatus.

  First, the sealed letter preparation apparatus 1 includes a printing unit 2 that prints and discharges a sheet to be an envelope 50 and contents 40. The printing unit 2 includes a plurality of types of printed bodies (sheet-like sheets 30 and envelope sheets 100 that become the contents 40) that can be stored in the inside or the side surface of the casing 4 that stores each unit of the apparatus. A sheet feeding table P (P1 to P4) is provided. In this example, the envelope paper 100 is stored in the paper feed tray P1 attached to the side surface of the housing 4, and the sheet-like paper that becomes the contents 40 in the paper feed trays P <b> 2 to P <b> 4 provided inside the housing 4. 30 is stored.

  The sheets and the like that have come out of the sheet feed table P are sent from the introduction path to the loop-shaped conveyance path 5 and conveyed, and an image is printed by printing means arranged at a predetermined interval downward along the lower half of the conveyance path. It is formed. In this example, four inkjet devices C, K, M, and Y that discharge inks of cyan, black, magenta, and yellow, respectively, are arranged as printing means. Furthermore, in order to form the adhesive force adjustment layer 400 on the envelope paper, the fifth inkjet device S, which is a printing means capable of discharging silicon ink which is a hardly adhesive material, includes four inkjet devices C, K, M, Next to Y. If this inkjet apparatus S is used, the adhesive force adjusting layer 400 can be printed on the envelope paper in a desired pattern, and the release layer 405 can be printed.

  The loop-shaped transport path 5 is provided with a first discharge path 6 that branches out of the loop in a substantially horizontal direction on the downstream side of the printing unit. Further, a second discharge path 7 for branching the sheet out of the loop is provided in the upper half of the loop-shaped transport path 5 in a branched manner. Furthermore, a switchback path 8 is branched between the second discharge path 7 and the introduction path from the sheet feed table P. The switchback path 8 is means for reversing the upper and lower sides of the paper in the transport path 5 by receiving the paper transported through the transport path 5 and returning it to the transport path 5. If this switchback path 8 is used and the upper and lower surfaces of the paper are reversed and passed through the transport path 5 twice, color double-sided printing that forms color images on the upper and lower surfaces of the paper with the inkjet devices C, K, M, and Y Can be performed.

  Next, the envelope paper 100 sent from the first discharge path 6 of the printing unit 2 and the paper 30 to be the contents 40 are received and processed at the adjacent part of the printing unit 2, and the contents are transferred to the envelope paper 100. An encapsulating sealing unit 3 for enclosing and sealing 40 is provided.

  That is, the first discharge path 6 of the printing unit 2 extends horizontally, protrudes to the outside, and is introduced into the housing 9 of the adjacent sealing unit 3. In the housing 9, the second conveyance path 20 branches obliquely downward from the discharge path 6, and further downstream of the second conveyance path 20 becomes one path 11 of the first conveyance path 10. Has been.

  One path 11 of the first transport path 10 is disposed substantially parallel to one path 21 of the second transport path 20. One path 11 of the first transport path 10 is a guide path that transports the envelope sheet 100 to the folding means, and as described above, one path 21 of the second transport path 20 folds the sheet of the contents 40. The first and second transport paths 10 and 20 are switched by a switching flap (not shown) provided at a branch point of the second transport path 20.

  At the end of one path 11 of the first transport path 10, a first folding means is provided to fold the envelope paper 100 to produce the form of the envelope 50. The first folding means is provided with a rotatable main folding roller A ', a sheet conveying roller D' and a first folding roller B 'that rotate in contact therewith. Since these rollers are made of rubber and are for folding the paper, the applied pressure is small and the axial length thereof is larger than the width of the envelope paper 100.

  From the main folding roller A ′ and the first folding roller B ′ of the first folding means of the first conveying path 10, the other path 13 of the first conveying path 10 is curved in a convex shape upward. However, it extends in the horizontal direction. The end of the other path 13 of the first transport path 10 that transports the envelope paper 100 is led to an enclosing sealing means described in detail later.

  Next, a second transport path 20 for transporting the paper printed by the printing unit 2 is provided inside the housing 9 of the encapsulating and sealing unit 3. The second transport path 20 is below the first transport path 10, and has one path 21 for feeding the paper fed in the horizontal direction from the first discharge path 6 of the printing unit 2 obliquely downward. doing.

  In the middle of the path 21, a sheet transport roller 22 and an aligning unit 23 that is an openable and closable gate are provided. The transported sheet is fastened to the aligning unit 23 that closes the path 21, and the sheet is routed. 21 can be accumulated and stored. A folding means for folding the paper is provided at the end of the path 21. This folding means is provided with a rotatable central main folding roller A, and further, a first folding roller B, a second folding roller C, and one sheet conveying roller D can rotate to the main folding roller A, respectively. Touching. Since these rollers are made of rubber and are for folding the paper, the applied pressure is small, and the axial length thereof is larger than the width of the envelope paper 100. Further, although not shown, an abutting member against which the leading edge of the conveyed paper abuts is provided at the front position in the conveying direction by the main folding roller A and the conveying roller D. The abutting paper is bent to be main folded. A sheet bending portion is guided between the roller A and the folding roller B so that the sheet can be folded. Similarly, there is also an abutting member at the front position in the conveying direction by the main folding roller A and the folding roller B, and the sheet that has struck is bent to guide the bent portion of the sheet between the main folding roller A and the folding roller C. The paper can be folded. Therefore, according to these folding means, the sheet can be folded twice or more.

  Inside the housing 9 of the encapsulating and sealing unit 3, the second transport path 20 includes the other path 26 that continuously transports the sheet 30 folded by the folding means obliquely upward substantially orthogonal to the path 21. Have. The other path 26 is at a position below the other path 13 of the first transport path 10 for feeding the envelope paper 100 obliquely downward, and the path 13 of the first transport path 10 in the sealing means. Have joined.

  Next, the enclosing sealing means at the junction of the first transport path 10 and the second transport path 20 will be described. This enclosing sealing means is a second folding means that further folds the envelope paper 100 as necessary, and the contents 40 are further folded after aligning the contents 40 with the folded envelope paper 100. It is also a sealing means for wrapping the object 40 in the envelope, and further includes a sealing means for sealing the envelope.

  First, the enclosing and sealing means includes a rotatable main folding roller A ″ as a second folding means, a sheet conveying roller D ″ rotating in contact therewith, and first and second folding rollers B ″ and C ″. Is provided. Since these rollers are rubber and are for folding the paper, the applied pressure is small and the axial length thereof is larger than the width of the envelope paper 100. The envelope paper 100 is folded by the main folding roller A ′ and the first folding roller B ′ that are the first folding means as described above as necessary, and then further the main folding roller A ″ that is the second folding means. Where further folding of the pre-encapsulation stage is performed as necessary.

  However, although details will be described later, in the present embodiment, the envelope paper 100 is folded in four and the contents 40 are enclosed inside, so the envelope paper 100 is composed of the main folding roller A ′ and the first folding means as the first folding means. After being diffracted once by the roller B ′ or the like, it waits for the alignment of the contents 40 in the vicinity of the standby path 46 that has passed between the main folding roller A ″ as the second folding means and the sheet conveying roller D ″. Will be. Then, after aligning with the contents 40 sent through the second transport path 20, the contents are further folded between the main folding roller A "and the second folding roller B", and the second folding is performed. The object 40 is sealed in the envelope 50.

  Next, as shown in FIG. 8 to FIG. 10 and FIG. 11, a slightly inclined path 31 is arranged between the main folding roller A ″ and the second folding roller C ″ of the enclosing sealing means. Yes. In the vicinity of the rear end of this path 31, there is a water adding means 60 as an adhering means for adhering the envelope paper 100 into the envelope 50 by applying water to the rewet glue 107 of the envelope paper 100 to exert an adhesive force. Is provided.

  The water adding means 60 is a device for adding water to the rewet paste 107 provided on the inner side of both edges in the width direction of the envelope paper 100, and includes a water tank 61 disposed below the path 31, A water absorbing portion 62 made of a felt material or the like immersed in water, a swing arm 63 disposed above the path 31, and a rotating cam 64 that drives the swing arm 63 are provided.

  The envelope paper 100 diffracted once by the first folding roller A ′, the first folding roller B ′ and the like is between the main folding roller A ″ and the paper conveying roller D ″. The content 40 sent along the other path 26 of the second transport path 20 is aligned with the waiting envelope paper 100, and further the main folding roller A "and the second folding roller B The second fold is made after passing through “.

  As shown in FIG. 12, the aligned envelope paper 100 and contents 40 are further conveyed forward by the main folding roller A ″ and the second folding roller B ″. Here, the envelope paper 100 is in a state in which the surface B of the second paper piece 102 faces downward and the re-wet paste 107 faces the water absorbing portion 62 of the hydration means 60. This is a state before the fourth paper piece 104 is folded in the direction of the arrow in FIG. 5 and is close to the state where the surface B of the second paper side 102 is directed downward. Here, the rotating cam 64 is actuated to swing the swing arm 63, and the re-wet paste 107 is pressed against the water absorbing portion 62 and is added with water.

  As shown in FIG. 13, the envelope paper 100 is fed forward by the main folding roller A ″ and the second folding roller C ″. As a result, the fourth paper piece 104 is folded, the back surface H of the fourth paper piece 104 is overlapped with the front surface B of the second paper piece 102, and the rewet glue 107 and the adhesive force adjusting layer 400 are bonded.

  Next, as shown in FIGS. 8 to 10 and FIG. 11, a path 47 inclined obliquely upward and forward is disposed between the main folding roller A ″ and the second folding roller C ″ of the enclosing sealing means. ing. This path 47 is substantially parallel to one path 11 of the first transport path 10 and one path 21 of the second transport path 20.

  In the middle of the path 47, as already described with reference to FIG. 7, a pressure roller 80 is provided as a pressure-bonding means constituting a part of the sealing means. The pressure roller 80 is a means for applying a certain amount of pressure to the pressure-sensitive adhesive 106 of the envelope paper 100, and is therefore made of a highly rigid metal. This pressure roller 80 is provided as a pair of upper and lower left and right, and two pairs of right and left are provided. Both edges in the width direction of the envelope 50 in which the contents 40 are enclosed are sandwiched from above and below to apply pressure, and pressure sensitive adhesive 106 can be sealed.

  As shown in FIG. 11, each pressure roller 80 is attached to the tip of a support arm 82 that can swing around a fulcrum 81. A biasing means 83 is attached to the rear end of the support arm 82, and the pair of press rollers 80 are configured to contact each other with a predetermined pressure. Therefore, if the envelope 50 is introduced between the pair of pressure rollers 80 and 80 and the pressure roller 80 is driven in the feed direction, the envelope 50 is conveyed forward while receiving a predetermined pressure only at both edges. . Note that the pressure applied to the envelope paper 100 by the pressure roller 80 by the urging unit 83 can be, for example, about 700 N / cm, depending on the type of the pressure-sensitive adhesive 106.

  Here, the width of the pressure roller 80 is smaller than the application width of the pressure-sensitive adhesive 106 provided at both edges in the width direction of the envelope paper 100. Further, the distance between the two pairs of right and left pressure rollers 80, 80 is larger than the width of the contents 40 enclosed in the envelope 50 and smaller than the width of the envelope 50. Therefore, in the sealing process by the pressure roller 80, only the pressure-sensitive adhesive 106 at both edges in the width direction of the envelope 50 can be reliably pressed with an area corresponding to the width of the pressure roller 80 and bonded with a predetermined adhesive force. In addition, at that time, the content 40 is not pressed by the pressure roller 80, so that the content 40 is not bonded together with the envelope. For example, when forming a normal size envelope, the width of the pressure-sensitive adhesive 106 provided on both edges of the envelope paper 100 is set to about 5 mm in consideration of the displacement of the pressure roller 80. The width of the pressure roller 80 can be set to about 3 mm in consideration of reliable adhesion of the envelope paper 100.

  As described above, the pressure roller 80 is narrow, and it is necessary to press the pressure-sensitive adhesive 106 only on both edges of the assembled envelope with the pressure roller 80. The alignment in the width direction needs to be performed accurately.

  Therefore, as shown in FIG. 14, an alignment roller 65 is provided between the main folding roller A ″ and the second folding roller C ″ and the pressure roller 80 in the enclosing sealing portion of the present embodiment. The axial length of the alignment roller 65 is larger than the width of the envelope paper 100, and the position can be adjusted by moving in the axial direction while holding the envelope paper 100. Further, an edge sensor 66 is provided slightly upstream of the alignment roller 65 to catch the edge of the envelope paper 100 sandwiched between the alignment rollers 65 and correct the position of the alignment roller 65. In addition, the position information of the envelope paper 100 can be acquired.

  Therefore, as shown in FIG. 14 or 15, if the edge sensor 66 catches the edge of the envelope 50 conveyed to the alignment roller 65 and moves the alignment roller 65 based on the position information, the pressure roller 80, the position of the envelope 50 in the width direction can be adjusted optimally. As a result, only the pressure-sensitive adhesive 106 at both edges of the assembled envelope 50 can be reliably pressed by the pressure roller 80.

  As shown in FIGS. 8 to 10, the sealed letter preparation apparatus 1 of this embodiment includes a control unit 90 for controlling the mechanisms of the printing unit 2 and the encapsulating sealing unit 3 described above. In the illustrated example, the control unit 90 is disposed in the printing unit 2, but may be disposed in the enclosing sealing unit 3, or may be disposed separately from the printing unit 2 and the enclosing sealing unit 3. May be.

(3) Operation of the sealed letter creating apparatus (FIGS. 8 to 10, 12 to 15)
Next, in the envelope preparation apparatus 1 of the present embodiment described above, a name or the like is printed on the envelope paper 100, and further, the necessary contents 40 are printed and folded, and the envelope paper 100 is folded and formed. The entire procedure for enclosing and sealing the contents 40 in the envelope 50 will be described.

  As shown in FIG. 8, in the printing unit 2, the envelope paper 100 is sent out from the paper feed tray P1. In the present embodiment, the envelope paper 100 may be on any of the paper feed trays P1 to P4 of the printing unit 2. The envelope paper 100 is printed on both sides by the inkjet devices C, K, M, and Y while making one round of the loop-shaped conveyance path 5. It is also possible to select single-sided printing instead of double-sided printing. In general, an address or the like is printed on the outer surface of the envelope 50, and on the inner surface of the envelope 50, some information to be sent to the destination is necessary as well as the printed content of the sealed contents 40. Printed. Information printed on the inner surface of the envelope 50 can be read by the recipient opening the envelope 50. In addition, before or after the printing process using the inkjet devices C, K, M, and Y, the adhesive force adjustment layer 400 and the release layer 405 may be printed with the silicon ink using the inkjet device S.

  The envelope paper 100 is sent from one path 11 of the first transport path 10 to the folding means by switching a switching flap (not shown). The envelope paper 100 is fed forward by the main folding roller A ′ and the paper conveying roller D ′, and abuts against an abutting member (not shown) to bend. The main folding roller A ′ and the first folding roller B ′ are bent from the bent portions. The sheet is further sandwiched and conveyed, and a crease is formed at a part of the leading end in the sheet passing direction. The partially folded incomplete envelope stands by in preparation for alignment of the contents 40 at a position that has passed between the main folding roller A ″ and the sheet conveying roller D ″ of the sealing means. After the alignment of the contents 40, the sheet is further folded between the main folding roller A "and the second folding roller B" while wrapping the contents 40, and the contents are omitted. The state shown in FIG. 5 is obtained.

  As shown in FIG. 9, following the envelope paper 100, the required paper 30 as the contents 40 is sent from one of the paper feed trays P2 to P4 to the loop-shaped transport path 5 with a predetermined fixed interval. Both sides of the paper 30 are printed by the inkjet devices C, K, M, and Y during one round of the conveyance path. It is also possible to select single-sided printing instead of double-sided printing. The sheet 30 of the contents 40 is sent to one path 21 of the second transport path 20 by switching a switching flap (not shown). The sheets 30 are stored in the aligning portion 23 in one path 21 of the second carrying path 20 until the required number of sheets is collected, and when the required number of sheets is aligned, the aligning portion 23 is opened to the folding means (main folding roller A or the like). It is sent. The sheet 30 folded in a desired state by a plurality of foldings performed by the folding unit is sent to the enclosing sealing part (main folding roller A ″ or the like) via the other path 26 of the second transport path 20. In the present embodiment, the contents 40 are folded in three (in the example shown in FIG. 6, the contents 40 are folded in two as another example.) The contents 40 are composed of a main folding roller A ″ and a sheet conveying roller. It is aligned with the envelope paper 100 that is waiting at the position that has passed between D ″.

  As shown in FIG. 10, the aligned envelope paper 100 and the contents 40 are further conveyed forward by the main folding roller A ″ and the second folding roller B ″, and the second folding is performed. The contents 40 are wrapped inside. Here, the rotating cam 64 of the water adding means 60 is actuated to swing the swing arm 63, and the re-wet paste 107 of the envelope paper 100 is pressed against the water absorbing portion 62 to add water.

  As shown in FIG. 13, the envelope paper 100 is fed forward by the main folding roller A ″ and the second folding roller C ″, the fourth paper piece 104 is folded, and the adhesive force adjusting layer on the back surface H of the fourth paper piece 104. 400 is bonded to the rewet paste 107 on the surface B of the second paper piece 102 to form the envelope 50 and enters the alignment roller 65.

  As shown in FIG. 15, the alignment roller 65 sandwiching the envelope 50 adjusts the position in the axial direction based on the position of the envelope 50 grasped by the edge sensor 66 shown in FIG. The envelope 50 is moved so that the agent 106 comes to a position overlapping the pressure roller 80. Then, both edges of the envelope 50 are pasted together by passing through the pressure roller 80, and the envelope 50 is sealed.

  According to the present embodiment, in the process of folding the envelope paper 100 aligned with the contents 40 into the envelope 50, the paper pieces are first bonded with the re-wetting paste 107, and then the envelope 50 is positioned accurately in the width direction. Then, the pressure-sensitive adhesive 106 is reliably pressed by the narrow pressure roller 80. Therefore, the pressure-sensitive adhesive 106 can be reliably bonded with a sufficient and necessary width for bonding by the pressure roller 80 that is narrow and capable of producing a high pressure with a small force.

  Then, the sealed letter completed after the sealing and sealing is completed is discharged to a discharge tray 48 provided on the upper surface of the housing 9, and is sequentially stacked to wait for removal.

  As described above, the envelope paper 100 according to the present embodiment, which is bent to create an envelope, is bonded with the pressure-sensitive adhesive 106 at both ends in the width direction of the envelope, and the inner side of the pressure-sensitive adhesive 106 is bonded again. Although the wet glue 107 is used, the adhesive force adjusting layer 400 having a large number of adhesive portions 401 whose paper surface is regularly exposed on the other paper surface to which the re-wet paste 107 adheres is difficult to adhere. It consists of materials. Since the adhesive strength for each point of the adhesive portion 401 is set to a constant value that is weaker than the tear strength of the paper, it can be easily opened with a constant force if it is peeled in order from one side. Moreover, since the response at the time of opening is constant, the stable preferable touch can be obtained. Even if the adhesive strength of each point of the adhesive portion 401 is small, the necessary number of adhesive portions 401 are provided and the overall adhesive strength is set as large as necessary. Thus, an accident that the sealed portion of the re-wet paste 107 is peeled off can be surely prevented.

  The rewet paste 107 is generally formed in a stamp-type application process using a sponge-like protruding member, so it is difficult to form it into small dots. However, since it is more difficult to form a highly viscous paste in a dot shape with a stable diameter, it is practically impossible to adjust the adhesive force by controlling the application pattern of the rewet paste 107. However, in this embodiment, the re-wetting paste 107 is formed in a uniform band shape, and a pattern in which a large number of dot-like holes are formed on the paper surface facing this using a hard-to-adhere material is printed. Stable small-diameter point bonding with the glue 107 could be realized, and both easy opening and difficulty in opening due to an accident such as mailing could be realized.

  Further, according to the envelope paper 100 of the present embodiment, since the adhesive 107 and the adhesive force adjustment layer 400 are provided at different positions on the envelope paper 100, the adhesive 107 and the adhesive force adjustment layer 400 are provided on the envelope paper 100. Compared to the case where the two are formed at the same position, there is no need to set the positioning accuracy high, and there is an effect that the manufacturing is easy.

2. Second Embodiment (FIG. 16)
In the first embodiment, as shown in FIG. 6, the rewetting paste 107 is provided on the front surface B of the second paper side 102, the adhesive force adjustment layer 400 is provided on the back surface H of the fourth paper side 104, and the envelope paper 100 is provided. When the sheet is folded into the shape of the envelope 50, the rewet glue 107 and the adhesive force adjusting layer 400 face each other and are bonded to each other.
However, the re-wetting paste 107 and the adhesive force adjustment layer 400 do not always have to be formed separately on different paper surfaces, and can be configured as in the second embodiment shown in FIG. That is, in this example, the adhesive force adjusting layer 400 having a large number of adhesive portions 401 (holes) is provided on the surface B of the second paper edge 102, and the re-wet paste is applied in a range narrower than the adhesive force adjusting layer 400 from above. 107 is provided, and the re-wet paste 107 enters each bonding portion 401 and is bonded to the second paper side 102 in advance. When the envelope paper 100 is folded into an envelope shape in this state, the fourth paper piece 104 is bonded to the rewet glue 107 in a large area, but the adhesive strength between the rewet glue 107 and the second paper edge 102 is adjusted for adhesive strength. As defined by the layer 400, the adhesive strength between the fourth paper piece 104 and the rewet paste 107 is smaller. Therefore, at the time of opening, the 4th paper edge 104 to which the re-wet paste 107 adhered can be peeled from the 2nd paper piece 102 with a fixed small force.

  In the first embodiment, the rewet glue 107 and the adhesive force adjustment layer 400 can be made substantially transparent so that printing of the underlying paper can be visually recognized, but the information printed on the paper is read. The conditions are not the same as when nothing is on the paper. Therefore, it is convenient for reading the printed information that the area of the rewet glue 107 and the adhesive force adjustment layer 400 printed on the paper is as small as possible. In the present embodiment, both the re-wetting paste 107 and the adhesive force adjustment layer 400 can be formed so as to overlap each other on substantially the same position on the same piece of paper, so that the area of the area where printed information is easier to read can be made wider. . Further, the re-wet paste 107 is used by adding water, and after adhering to the paper, it is dried and shrunk to exert an adhesive force. However, the paper may be deformed by the influence of the drying / shrinkage. In the present embodiment, the rewet paste 107 is provided on the adhesive force adjustment layer 400 even if partially, so that when the hydrated rewet paste 107 dries and shrinks, the adhesion force adjustment is performed. Since it slides on the layer 400, the force applied to the paper is reduced and the deformation of the paper is reduced.

3. Third Embodiment (FIG. 17)
In this example, the re-wetting paste 107 is provided on the surface B of the second paper edge 102, and the re-wetting paste 107 is provided by providing an adhesive force adjusting layer 400 having a large number of bonding portions 401 (holes) thereon. Is. In this state, when the envelope paper 100 is folded into an envelope shape, the fourth paper piece 104 is bonded to the re-humidified adhesive 107 via the adhesive portion 401 of the adhesive force adjusting layer 400. Therefore, at the time of opening, the fourth paper edge 104 can be peeled off from the second paper piece 102 provided with the rewet glue 107 covered with the adhesive force adjusting layer 400 with a certain small force.

  According to this embodiment, as in the second embodiment, both the rewet glue 107 and the adhesive force adjustment layer 400 can be formed on the same piece of paper, so that the area of the printed information is more easily read. be able to. Further, if the envelope creation apparatus of the first embodiment provided with the inkjet device S that discharges silicon ink is used, the re-wet paste 107 is applied to the envelope paper 100 on which the re-wet paste 107 has been applied in advance at a necessary position. Silicone ink is printed from above to form the adhesion adjusting layer 400, and the envelope paper of this embodiment can be formed.

4). Modification of Embodiment The sealed letter making apparatus 1 of each embodiment described above includes the printing unit 2, but the printing unit 2 may be an existing image forming apparatus. That is, a normal image forming apparatus already installed in a business office or the like can be used as the printing unit 2 of the present invention, and the sealed sealing unit 3 of the present invention can be formed by connecting the sealed sealing unit 3 thereto. Therefore, the envelope sheets 100 and 200 and the contents 40 can be printed using a single existing image forming apparatus, and the installation cost of the automatic envelope preparation apparatus can be reduced.

  In addition, the sheet 30 of the contents 40 is not necessarily folded, and may be sealed in the envelope as it is without being folded depending on the relationship with the size of the envelope. In each embodiment, a sheet-like sheet is used as the envelope sheets 100 and 200 and the sheet 40 of the contents 40. However, for example, a roll-shaped sheet is used and cut into a necessary length each time it is used. You may make it supply.

DESCRIPTION OF SYMBOLS 1 ... Seal preparation apparatus 2 ... Printing part 3 ... Encapsulation sealing part 10 ... 1st conveyance path 20 ... 2nd conveyance path 30 ... Paper used as contents 40 ... Contents 60 ... Hydrolysis means 80 ... Pressure bonding means ... Pressure bonding Pressure roller 90 as means 90 Control means 100 Envelope paper 106 Pressure sensitive adhesive 107 Rewetting paste 107 as an adhesive corresponding to the adhesive force adjusting layer
DESCRIPTION OF SYMBOLS 400 ... Adhesive force adjustment layer 401 ... Adhesion part 402 ... Difficult adhesion part S ... Inkjet apparatus as a printing means which discharges silicon ink which is a difficult adhesion material A, A '... Main folding roller B. B '... first folding roller C ... second folding roller D, D' ... paper conveying roller A "... main folding roller B" ... first folding roller C "... second folding roller D" ... paper conveying roller

Claims (5)

In an envelope paper that is applied to a sealed letter creation device that includes a sealed sealing part that creates a sealed letter by folding and sealing the envelope paper so as to contain the contents,
An adhesive that bonds the envelope paper bent and molded into the shape of an envelope;
An adhesive force adjusting layer that is formed in a predetermined pattern with a hardly adhesive material at a position corresponding to the adhesive, and that adjusts the adhesive force of the adhesive to the envelope paper;
An envelope paper characterized by comprising: The adhesive force adjusting layer has a hard-to-adhere portion where the surface of the envelope paper is covered with the hardly-adhesive material, and an adhesive portion where the surface of the envelope paper is not covered with the hardly-adhesive material. The envelope paper according to claim 1, wherein the adhesive portion is provided at a plurality of locations in a predetermined shape. The adhesive and the adhesive force adjustment layer are formed at different positions of the envelope paper, respectively, and are configured to face each other when the envelope paper is folded and formed into an envelope. The envelope paper according to 2. The envelope paper according to claim 2, wherein the adhesive is provided on the adhesive force adjusting layer, and the adhesive is bonded to the surface of the envelope paper via the adhesive portion. A printing unit that prints envelope sheets and contents as envelopes for each envelope to be created, a first conveyance path that conveys the envelope sheet printed by the printing unit, and the printing unit printed by the printing unit A second conveyance path for conveying the contents, and the first conveyance path and the second conveyance path are arranged at a position where the contents are merged, and the envelope paper is folded and sealed so as to enclose the contents. In a sealed letter creating apparatus comprising a sealed sealed part for creating a sealed letter by
The printing unit is provided with printing means for printing with a desired pattern on the envelope paper with a hardly adhesive material,
The encapsulating sealed portion includes pressure bonding means for performing sealing by applying pressure to both edges in the width direction of the envelope intersecting with the conveying direction, and inside the both edges in the width direction of the envelope An envelope creation apparatus, characterized in that an adhesive means for adhering envelope paper is provided.

Images