JP3964451B1 - Triple envelope and manufacturing method thereof - Google Patents

Abstract

[Purpose] It is easy to form a lip-shaped bent part that closes each of the two storage parts, and it is easy to remove only the first sheet on the front side of the user used for the cover of the outgoing envelope, A triple envelope that can be easily manufactured from a plastic sheet.
[Structure] First, second, and third sheets are stacked one after another, and their bottom portions and opposite side portions of each side are fixed to each other so that the first sheet and the second sheet are fixed to each other. A first accommodating part for accommodating a predetermined tangible object is formed between the second sheet and the third sheet, and a second accommodating part for accommodating a predetermined tangible object is formed between the first sheet and the first sheet. The sheet is provided with a lip-shaped bent portion capable of sealing the first accommodating portion, and the second sheet is provided with a lip-shaped bent portion capable of sealing the second accommodating portion.
[Selection] Figure 1

Description

  The present invention relates to a triple envelope in which there are two containers for storing documents and other tangible objects (including fruits and tags) and a method for manufacturing the same.

Conventionally, an envelope with a reply envelope has been proposed. For example, Patent Document 1 discloses that a paper sheet is folded in three in the horizontal direction when viewed from the user to form a three-layer structure, and the paper sheet on the front side of the user is used as the cover of the outgoing credit envelope. By removing the front cover, the paper sheet that will be the cover of the return envelope will come out on the front side. An envelope having a three-layer structure including a housing portion is proposed.
JP-A-10-309882

  However, in the conventional three-layered envelope as shown in Patent Document 1, the sheet is simply folded in three and glued around its periphery, so that each of the two accommodating portions is closed. There was a problem that it was difficult to form a lip-shaped bent portion. Further, in the conventional envelope having the three-layer structure as shown in Patent Document 1, the cover sheet of the forward envelope is strongly bonded to the paper sheet as the cover of the return envelope. There was a problem that it was difficult to easily remove only the paper sheet of the envelope cover. In addition, the conventional three-layer envelope as shown in Patent Document 1 is scheduled to be manufactured from a paper sheet and is difficult to apply to a three-layer envelope manufactured from a plastic sheet. There was a problem.

  The present invention has been made paying attention to such problems of the prior art, and it is easy to form a lip-shaped bent portion for closing each of the two accommodating portions, and the cover of the outgoing envelope An object of the present invention is to provide a triple envelope that can be easily removed only from the first sheet on the front side of a user used for the above-mentioned process and can be easily manufactured from a plastic sheet.

In the triple envelope according to the present invention for solving the problems of the prior art as described above, the first sheet, the second sheet, and the third sheet are stacked in the order of the first, second, and third sheets. The first and second storage portions for storing documents and other tangible objects are formed between the first sheet and the second sheet by fixing the bottom portions and the opposing portions of the both side portions to each other. In addition, a second accommodating portion for accommodating documents and other tangible objects is formed between the second sheet and the third sheet, and the upper ends of the first, second, and third sheets are open to each other. A triple envelope in which a first opening that opens above the first housing part and a second opening that opens above the second housing part are formed, wherein the first sheet is: in launching the destination as viewed from a user of said first housing portion That the first body portion to form the front side, together said first first opening of said a first bent lip-shaped extending a first distance upward from the body portion and the second opening A first bent portion that can be folded so as to be closed; and a first adhesive margin portion in which an adhesive portion is attached to an upper portion of the first bent portion facing the first opening. cage, said second sheet, said from said second body portion to form a first accommodating portion rear side and the front side of the second housing part of, the "first distance from the second body portion upward A second bent portion that is a lip-shaped second bent portion that extends by a “ second distance shorter than the distance obtained by reducing the vertical distance of the first adhesive margin portion ”, and can be bent so as to close the second opening; , the adhesive portion and its in the side upper part of which faces the second opening in the second bent portion A second overlap portion where the release paper on is formed by deposition, and wherein the third sheet includes a third body portion forming a rear surface side of the second housing portion, the third body portion A second glue receiving portion that is disposed in an upper portion of the first and second contact portions when the second bent portion is bent, and the second paste in the third main body portion. A first glue receiving part disposed at a lower part of the receiving part and abutted against the first glue margin when the first bent part is bent , whereby (a) the A desired tangible object can be accommodated in the first accommodating portion, the first sheet is the front side for destination display, the third sheet is the back side, and the first folded portion is above the first and second accommodating portions. A forward envelope capable of closing the first and second openings, and (b) the state of (a) From the second sheet, it is possible to accommodate a desired tangible object in the second accommodating portion simply by peeling the first sheet from the second sheet along the fixed portion, and the second sheet is used as a destination display front side. A return envelope can be configured in which the third sheet is the back side and the second bent portion can block the second opening above the second housing portion .

In addition, a triple envelope according to the present invention is a triple envelope including two storage portions for storing documents and other tangible objects, respectively, and a single sheet is arranged on one end side of the first envelope. a first portion that Do and the surface a of a second portion disposed at the other end portion side of the surface B of the second envelope, is arranged between the two said first envelope surface a And three folds along each fold line that divides into three parts, the third part serving as the common back surface of the front surface B of the second envelope, wherein the upper end of the first part is the first part A first lip-shaped bent portion that can be bent toward the second and third portions is formed at the upper end portion of the first portion by folding so as to protrude above the second and third portions. and, the first, sea bottom and the sides facing each other of the second and third portions By, to form a first housing portion by the first and second portions, the second and the third portion forming a second housing portion, the said second part 3 by excising the portion and fold line or the periphery thereof divided into the folding lines substantially parallel to an opening of the second housing portion, said after the resection the first cutting step A second lip that is bendable in the direction of the upper end of the third part at the upper end of the second part by cutting off the lower part of the upper end of the third part substantially parallel to the fold line. It is manufactured by forming a bent portion.

  Further, in the triple envelope according to the present invention, the first, second, and third sheets are formed of a plastic sheet, and between the both sides of the first sheet and the two sides of the second sheet, And / or ink is printed in advance at a predetermined density between the bottom of the first sheet and the bottom of the second sheet, and this ink causes both sides of the first sheet and the second sheet to be The strength of the welded seal portion with both side portions of the sheet and / or the strength of the welded seal portion between the bottom portion of the first sheet and the bottom portion of the second sheet is the same as the both side portions of the second sheet and the third sheet. It is desirable that the strength of the welded seal portion with both side portions and / or the strength of the welded seal portion between the bottom portion of the second sheet and the bottom portion of the third sheet be smaller.

  Further, in the triple envelope according to the present invention, the first, second, and third sheets are formed of a plastic sheet, and between the both side portions of the first sheet and the second sheet. The thickness of the welding seal portion and / or the thickness of the welding seal portion between the bottom portion of the first sheet and the bottom portion of the second sheet is equal to both sides of the second sheet and both sides of the third sheet. It is desirable that the thickness of the welded seal portion between the portions and / or the thickness of the welded seal portion between the bottom portion of the second sheet and the bottom portion of the third sheet be formed thinner. .

  Furthermore, the manufacturing method of the triple envelope including two accommodating portions for accommodating documents and other tangible objects according to the present invention is the method of arranging a single sheet on one end side of the first envelope surface A. A first portion which is arranged on the other end side and a second portion which becomes the surface B of the second envelope, and a surface A and the second surface of the first envelope which are arranged between them. Folded in three along each fold line that divides into three parts with the third part that becomes the common back surface of the front surface B of the envelope, wherein the upper end of the first part is the second and third parts A three-fold step of forming a first lip-shaped bent portion that can be bent toward the second and third portions at the upper end of the first portion by folding the upper portion of the first portion so as to protrude upward. And the opposite bottoms and both of the first, second and third portions. A sealing step of forming a first accommodating portion by the first and second portions and forming a second accommodating portion by the second and third portions by sealing the portion, and the second A first cutting step of forming an opening of the second housing portion by cutting a fold line that separates the portion and the third portion or a peripheral portion thereof substantially in parallel with the fold line; and By cutting away the lower part of the upper end of the third part after cutting by one cutting process substantially parallel to the fold line, the third part in the direction of the upper end of the second part And a second cutting step of forming a second lip-shaped bent portion that can be bent at the upper end portion of the first and second ends.

  In the present invention, the first sheet is provided with a lip-shaped bent portion and a first glue margin, the second sheet is provided with a lip-like second glue margin, and the third sheet is provided with the second glue margin. A second glue receiving portion against which the portion abuts and a first glue receiving portion against which the first margin allowance abuts, so that the lip-shaped bends for closing the two accommodating portions respectively The part and the glued part can be easily formed, and an easy-to-use triple envelope can be provided.

  In the present invention, when the portion of the upper end portion of the third sheet facing the second adhesive margin is cut and removed, the second sheet and the third sheet are used. The second opening portion of the second housing portion is easily formed, and the second glue receiving portion and the first glue margin portion where the second glue margin portion abuts below the upper end portion of the third sheet are in contact with each other. It becomes possible to easily form the first glue receiving portion in contact therewith.

  In the present invention, the first, second, and third sheets are formed of a plastic sheet, and between the both side portions of the first sheet and the both side portions of the second sheet, and / or the second sheet. When ink is printed at a predetermined density in advance between the bottom of one sheet and the bottom of the second sheet, both sides of the first sheet and both sides of the second sheet are caused by this ink. The strength of the welded seal portion and / or the strength of the welded seal portion between the bottom portion of the first sheet and the bottom portion of the second sheet are determined between the both side portions of the second sheet and the both side portions of the third sheet. The strength of the welded seal portion and / or the strength of the welded seal portion between the bottom portion of the second sheet and the bottom portion of the third sheet can be made smaller. Therefore, in this case, in order to expose the second sheet to the front side of the user, it is very easy to remove only the first sheet on the front side.

  In the present invention, the first, second, and third sheets are formed of a plastic sheet, and the thickness of a welding seal portion between both side portions of the first sheet and both side portions of the second sheet. And / or the thickness of the welding seal part between the bottom part of the first sheet and the bottom part of the second sheet, and the welding between the both side parts of the second sheet and the both side parts of the third sheet. When the thickness of the seal portion and / or the thickness of the welded seal portion between the bottom portion of the second sheet and the bottom portion of the third sheet is formed to be thinner, the second sheet is formed by the user. It is very easy to remove only the first sheet on the front side in order to expose it to the front side.

  Furthermore, in the present invention, when manufacturing a triple envelope, the first cutting step of cutting the fold line that separates the second part and the third part or its peripheral part substantially parallel to the fold line, In the second cutting step of forming the opening of the second accommodating portion and cutting the lower portion of the upper end portion of the third portion substantially parallel to the fold line, the upper end portion of the second portion is A second lip-shaped bent portion that can be bent is formed at the upper end portion of the third portion. Therefore, according to the present invention, each lip-shaped bent portion for forming the openings of the two accommodating portions and closing the openings of the two accommodating portions (adhesive portions are formed in a part thereof). It is very easy and efficient to form a glue margin part).

  The best mode for carrying out the present invention is a mode as described in Example 1 below.

  Hereinafter, the structure of the triple envelope for enclosing the letter and document by Example 1 of this invention is demonstrated. 1 and 2 are views for explaining three sheets for explaining the first embodiment. 1 and 2, reference numeral 1 denotes a plastic sheet that is arranged on the front side when viewed from the user and constitutes a cover of a forward envelope of a triple envelope, and 2 is arranged to face the sheet 1. And a plastic sheet 3 for constituting a forward credit accommodating part for putting a forward envelope letter and the like (and for constituting a cover of a reply envelope), 3 is disposed so as to face the sheet 2 and is combined with the sheet 2 It is a plastic sheet for constituting a reply accommodating portion for putting a letter of a reply envelope or the like.

  1 is a diagram showing a user side (front side) surface of each of the three sheets 1, 2, and 3. FIG. 2 is a side opposite to the user of each of the three sheets 1, 2, 3 (back side). FIG. Also, in FIG. 1, 1a is the surface A (outer surface of the envelope) of the triple envelope of the first embodiment, and 2a is the surface B (outside of the envelope) of the return envelope of the triple envelope of the first embodiment. Side). In FIG. 2, reference numeral 3a denotes a common back surface (outer surface of the envelope) of the forward envelope and the return envelope of the triple envelope according to the first embodiment. Moreover, in FIG. 1, 3c shows the surface (surface inside an envelope) on the opposite side to the said back surface 3a (refer FIG. 2). Further, in FIG. 2, reference numerals 1b and 2b denote surfaces (surfaces on the inner side of the envelope) opposite to the surface A (see FIG. 1) indicated by 1a and the surface B (see FIG. 1) indicated by 2a, respectively. .

  In FIGS. 1 and 2, reference numerals 4, 5, and 6 indicate the bottom portions of the sheets 1, 2, and 3, respectively. In the first embodiment, the bottom 4 of the sheet 1 and the bottom 5 of the sheet 2 are welded and sealed together, and the bottom 5 of the sheet 2 and the bottom 6 of the sheet 3 are welded and sealed together. Reference numerals 7, 8, and 9 denote both side portions of the sheets 1, 2, 3, respectively. In the first embodiment, both side portions 7 of the sheet 1 and both side portions 8 of the sheet 2 are welded and sealed together, and both side portions 8 of the sheet 2 and both side portions 9 of the sheet 3 are welded and sealed together. Is done. As described above, in the first embodiment, the respective bottom portions 4 and 5 and the both side portions 7 and 8 of the sheet 1 and the sheet 2 are welded and sealed to each other, thereby forming a forward envelope housing portion. . The bottom portions 5 and 6 and the side portions 8 and 9 of the sheet 2 and the sheet 3 are welded and sealed together to form a return envelope housing portion.

  In FIG. 1, reference numeral 11 denotes a lip-shaped bent portion extending a predetermined distance a from a portion (main body portion) constituting the surface A of the sheet 1, and 12 constitutes the surface B of the sheet 2. It is a lip-shaped bent part extending from the part (main body part) by a predetermined distance b upward. The bent portion 11 is formed such that a distance a in the illustrated vertical direction of the bent portion 11 is approximately twice or more than a distance b in the illustrated vertical direction of the bent portion 13. In the first embodiment, the folding envelope 11 is folded in the depth direction of the paper surface (screen) of FIG. 1 along the one-dot chain line 11a of FIG. The opening above the part is closed. Further, the bent portion 11 and the bent portion 12 are respectively shown in FIG. 1 along the one-dot chain line 11a and the one-dot chain line 12a (the one-dot chain line 11a and the one-dot chain line 12a face each other) in FIG. By being bent in the depth direction, the opening of the return accommodating portion composed of the sheets 2 and 3 is closed.

  In FIG. 2, reference numeral 11 b denotes a glue margin provided in the vicinity of the upper end of the sheet 1, and a known pressure-sensitive adhesive is disposed in the upper part of the bent portion 11 of the sheet 1. It is a glue margin part which is applied and a release paper (not shown) is attached thereon. Reference numeral 12b denotes an adhesive margin portion which is arranged at a substantially central portion of the bent portion 12 of the sheet 2 and is coated with a known adhesive and a release paper (not shown) is attached thereon. In FIG. 2, 3c is a glue receiving portion disposed in the upper portion of the sheet 3 in the figure, and the folded portion 11 of the sheet 1 and the folded portion 12 of the sheet 2 are both in the plane of FIG. 2 is a glue receiving part to which the glue margin part 11b of the sheet 1 is brought into contact when the sheet is bent toward the front side of the screen) and brought into contact with the back surface 3a of the sheet 3 in FIG. Reference numeral 3b denotes an adhesive receiving portion disposed between the upper end portion of the sheet 3 and the adhesive receiving portion 3c, and the bent portion 12 of the sheet 2 is directed toward the front side of the sheet (screen) in FIG. This is a glue receiving part to which the glue margin part 12b of the sheet 2 comes into contact when bent and brought into contact with the back surface 3a (see FIG. 2) of the sheet 3.

  In Example 1, the bent portion 11 of the sheet 1 of FIG. 1 is bent together with the bent portion 12 of the sheet 2 in the direction of the back surface 3a (see FIG. 2) of the sheet 3, thereby the sheet 1 and the sheet. 2 is closed by the bent portion 11 and the adhesive margin portion 11b in the bent portion 11 is the above-described opening portion of the receiving portion (and the accommodating portion between the sheet 2 and the sheet 3). The sheet 3 is brought into contact with the glue receiving portion 3c on the back surface 3a. At this time, by peeling a release paper (not shown) stuck on the adhesive of the adhesive margin portion 11b, the adhesive margin portion 11b is fixed to the adhesive receiving portion 3c, and the sheet 1 and The accommodating portion between the sheet 2 (and the accommodating portion between the sheet 2 and the sheet 3) is sealed.

  Further, in the first embodiment, the folding portion 12 of the sheet 2 in FIG. 1 is bent in the direction of the back surface 3a (see FIG. 2) of the sheet 3, so that the accommodating portion between the sheet 2 and the sheet 3 is provided. The opening is closed by the bent portion 12, and the glue margin portion 12 b in the bent portion 2 is brought into contact with the glue receiving portion 3 b of the back surface 3 a of the sheet 3. At this time, by peeling the release paper (not shown) pasted on the adhesive of the adhesive margin 12b, the adhesive margin 12b is fixed to the adhesive receiving portion 3b, and the sheet 2 and The accommodating portion between the sheet 3 is sealed.

  Next, the manufacturing method of the triple envelope by the present Example 1 is demonstrated. First, based on FIG. 3, the whole structure of the manufacturing method of the present Example 1 is demonstrated conceptually. FIG. 3 is a plan view showing a single plastic sheet 10 for producing the triple envelope of the first embodiment, and FIG. 3 (a) is a view showing the side forming the outer surface of the triple envelope; FIG. 3B is a diagram showing the side forming the inner surface of the triple envelope. In FIG. 3, the same reference numerals are given to the portions common to FIGS.

  In FIG. 3A, 21 is a fold line for bending the portion 2a forming the surface B below the sheet 10 in the depth direction of FIG. 3A. In FIG. 3 (a), reference numeral 22 denotes a portion 1a that forms the surface A above the sheet 10 after the portion 2a that forms the surface B is bent along the folding line 21. It is a fold line for bending in the depth direction.

  3 (a), 23 and 25 are welded to each other after or after being welded to each other with the peripheral portions of the bottoms 4, 5, and 6 of the sheets 1, 2, and 3 in FIG. 1 facing each other. A cut-out portion that is cut and removed while being cut. The cut portion 23 is a portion sandwiched between the cut line 23a and the cut line 23b in FIG. The cut portion 25 is a portion sandwiched between the cut line 25a in FIG. 3A and the lower end portion of the sheet 10.

  To conceptually describe the production of the triple envelope of the first embodiment, a sheet 10 as shown in FIG. 3 is prepared. First, the lower part (including the surface B) is formed with the fold line 21 in FIG. The portion 2a) is bent in the depth direction of FIG. 3 (a), and then the upper portion (the portion 1a including the surface A) with the fold line 22 of FIG. 3 (a) as a boundary is shown in FIG. 3 (a). Bend in the direction. At this stage, the cutout portion 25 and the bottom portion 5 and the cutout portion 23 and the bottom portions 4 and 6 above and below are overlapped with each other. Therefore, the welding lines 23a, 23b, and 25a (in this case, the cutting lines 23a, 23b, and 25a are substantially the same as each other) while welding and sealing these overlapping portions (or after welding and sealing). Cut the same line). As a result, the cutout portions 23 and 25 are cut and removed, and the bottom portions 4, 6, and 5 are welded and sealed to each other.

  Thereafter, the cut lines 21a and 21b (see FIG. 3A) positioned in the vicinity of the folding line 21 in the vertical direction. The cut lines 21a and 21b are formed by folding the sheet 10 around the folding line 21. In the state of being cut, they are cut in the same position. Thereby, a portion 24a (see FIG. 3A) sandwiched between the cut line 21a and the cut line 21b is cut off. Thereby, the opening part of the accommodating part formed of the sheet 2 and the sheet 3 is formed.

  Further, when the cut line 21c located above the cut line 21a in FIG. 3A is cut, a portion 24b sandwiched between the cut line 21a and the cut line 21c (see FIG. 3A). ) Is excised. Thereby, a step is generated between the upper end portion of the sheet 2 and the upper end portion of the sheet 3, that is, the upper end portion of the sheet 2 protrudes higher than the upper end portion of the sheet 3. A portion from which the sheet 2 protrudes becomes a bent portion 12 (see FIG. 1) of the sheet 2. Further, the both side portions 7, 8, 9 of each of the sheets 1, 2, 3 (when the sheet 10 is folded in three, the both side portions 7, 8, 9 are overlapped with each other). Are welded and sealed together. As a result, a total of two accommodating portions, that is, a first accommodating portion formed by the sheet 1 and the sheet 2 and a second accommodating portion formed by the sheet 2 and the sheet 3 are formed.

  As described above, the triple envelope of Example 1 is manufactured. In the first embodiment, the both side portions 7, 8, and 9 (they are overlapped with each other) are welded and sealed together, and then the same cutting operation as described above is performed to obtain the cut line 21a, 21b, and 21c may be cut, and the cut portion 24 (the portion sandwiched between the cut line 21c and the cut line 21b) may be cut off.

  Next, details of the manufacturing method of the triple envelope of the first embodiment will be sequentially described with reference to FIG. First, as shown in FIG. 4, printing is performed on a single base paper (plastic sheet) including a postal code entry box field on the front surface A, a sender field on the back surface, a postal code entry box field on the front surface B, and the like. . At that time, endless solid printing is performed at the side seal positions on both sides of the surface B (see reference numeral 8 in FIG. 3) (this will be described later with reference to FIGS. 14-16 and the like). This weakens the strength of the welded seal between both side portions (side seal portions) 8 of the sheet 2 having the surface B and both side portions (side seal portions) 7 of the sheet 1 having the surface A. This is because the user who has received the credit envelope can easily peel off the cover (sheet 1 having surface A) from sheet 2 having surface B. FIG. 5 shows an enlarged part of the base paper shown in FIG.

  Next, using a triangular plate or the like, the first fold portion (same as the fold line 21 in FIG. 3A) shown in FIG. 5 is folded inward (opposite the printing surface). At this time, the upper end portion of the sheet 1 having the surface A protrudes upward by a predetermined distance from the upper end portions of the other sheets 2 and 3 (the protruding portions are the sheet 1 and the sheet 2). And the bent portion 11 for closing the opening of the accommodating portion formed by the At this time, as shown in FIG. 6, an adhesive margin portion (see 11b in FIG. 3B) on the inner surface of the upper portion (the bent portion 11) of the surface A (see 1a in FIG. 3A). In addition, it is pasted with hot melt, release tape or the like.

  Next, the second fold part in FIG. 7 (same as the fold line 22 in FIG. 3A) is folded inward (opposite side of the printing surface) into three folds. That is, the sheet 2 having the front surface B is folded so as to be sandwiched between the sheet 1 having the front surface A and the back sheet 3. At this time, the sheet 1 having the surface A has a predetermined distance from the other two sheets 2 and 3 (the distance in the vertical direction of the glue margin portion 11b in FIG. 3B and its peripheral portion in FIG. 3). (B) is longer by approximately half the distance in the vertical direction of the bent portion 11 (see FIG. 7). FIG. 8 is a schematic view showing a tri-fold state at this time from the side. In FIG. 8, reference numeral 25 denotes an end portion of the sheet 2.

  Next, in the state of being folded in three as shown in FIG. 8, the folding line 22 and the cutout portion 25 at the lower end of the sheet 10 and its peripheral portion (the bottom portions 4, 5, 5 of the sheets 1, 2, 3 in FIG. 1). 6 and its peripheral portion), as shown in FIG. 9, welded (bottom seal) with a fusing seal, heat seal, ultrasonic seal or the like, cut along the cut lines 23a, 23b, 25a, Seal the bottoms 4, 5, 6. This point will be described later with reference to FIGS.

  Next, in order to form a lip-shaped bent portion 12 (see FIG. 1) in the sheet 2 including the surface B (in order to form a step between the upper end portion of the sheet 2 and the upper end portion of the sheet 3). 3), the cut lines 21a and 21b in FIG. 3A are cut to cut out the cut portion 24a, and the cut line 21c in FIG. 3A is cut to cut out the cut portion 24b. The cutout 24 shown is excised. FIG. 10A is a view of the three sheets 1, 2, and 3 that are overlapped with each other in order to explain the operation at this time, and FIG. 10B illustrates the operation at this time. Therefore, the three sheets 1, 2, and 3 that overlap each other are viewed from the side of the sheet 3 having the back surface.

  By the cutting described with reference to FIG. 10, the three sheets 1, 2, 3 having different lengths are held in a stacked state (see FIG. 11). Then, it paste-processes in the margin part 12b in the bending part 12 of the back side surface (surface inside an envelope) of the sheet | seat 2 which has the surface B. FIG. Thereafter, perforation is simultaneously performed on the folding lines 11a and 12a of the folding portions (lip folding portions) 11 and 12 of the sheet 1 having the surface A and the sheet 2 having the surface B (see FIG. 12). Next, in accordance with the printing pitch of the three sheets 1, 2, 3, side seal processing (melting sealing) is performed on both sides of each sheet 1, 2, 3. Thus, the triple envelope according to the first embodiment is completed (see FIG. 13).

  Next, the part which becomes a point in the manufacturing method of said Example 1 is demonstrated in detail. First, in the manufacturing method of the first embodiment, a configuration for allowing the sheet 1 including the surface A to be easily peeled from the sheet 2 including the surface B will be described. As described above with reference to FIG. 4, in the first embodiment, before the both side portions 7 of the sheet 1 and the both side portions 8 of the sheet 2 are welded and sealed (or fusing seal, ultrasonic seal), the surface of the sheet 2 is formed. A predetermined amount of ink is solidly printed endlessly on both side portions (side seal portions) 8 of the surface 2a having B (see FIG. 14). In the first embodiment, as described above, the ink is sandwiched between the two sheets 1 and 2 to adjust and weaken the seal strength between the sheets 1 and 2 (the printing ink has a seal strength). The user can easily peel the sheet 1 from the sheet 2. FIGS. 15A and 15B are diagrams for explaining this. That is, as shown in FIG. 15 (a), when three sheets 1, 2, 3 are simply overlapped and sealed at the same time (melting seal, heat seal, etc.), the sealing strength between the sheets is uniform. Become. On the other hand, as shown in FIG. 15B, the printing ink (see reference numeral 31 in FIG. 15B) is interposed between the three sheets 1 and 2, and the three sheets are stacked. In the case of sealing, the sealing strength between the sheet 2 and the sheet 3 is strong, but the sealing strength between the sheet 1 and the sheet 2 becomes weak because the ink 31 interferes with the sealing. It becomes easy to peel from the sheet 2.

  When the sealing strength of the sheet 1 including the surface A is weakened with respect to the sheet 2, the solid printing of the ink is close to 100% solid printing, and when the sealing strength is strong, the printing is close to 0%. . In the case of 0% printing, the weakness of the seal strength by corona discharge treatment on the sheet surface may be used. In the case of fusing seal, the heat sealing once and then cutting with a hot blade increases the sealing strength between the sheet 2 having the front surface B and the sheet 3 having the back surface, so that the sheet 1 having the front surface A is peeled from the sheet 2. Becomes easier. Although it differs depending on the material and thickness of the sheet, in the case of OPP (polypropylene), the user can smoothly peel off the sheet 1 having the surface A when printing with 30 to 50% solid, and does not peel off during transportation. Therefore, it is ideal (see FIG. 16).

  In the first embodiment, instead of (or together with) the method of interposing the printing ink, the thickness of the welded seal portion (seal ball) on the end surface of each side portion of the three sheets 1, 2, 3 is used. The sheet 1 and the sheet 2 are formed to be thin and the sheet 2 and the sheet 3 are formed to be thick (the welding seal portion 33 is gradually moved outward from the upper side of FIG. 17 toward the lower side). It is possible to facilitate the peeling of the sheet 1 from the sheet 2. That is, as shown in FIG. 17, in the first embodiment, the orientation and shape of the hot blade 32 for welding and sealing are devised (for example, the plane of the hot blade 32 is a distance from the end surface 1d of the side portion of the sheet 1). Are arranged at an incline so that the distance from the end surface 3d on the side of the sheet 3 is the farthest and the distance from the end surface 2d on the side of the sheet 2 is in the middle) A seal portion (seal ball) 33 having a substantially tapered cross section as shown in FIG. 17 can be formed. In this case, the thickness of the seal portion 33 facing the end surface 1d on the side portion of the sheet 1 and the end surface 2d on the side portion of the sheet 2 is set on the end surface 2d on the side portion of the sheet 2 and the end surface 3d on the side portion of the sheet 3. Since the seal portion 33 is formed thinner than the opposing seal portion 33, the sheet 1 can be easily peeled from the sheet 2.

  Next, the manufacturing / welding process of the bottom portions 4, 5, 6 of the three sheets 1, 2, 3 will be described. As described above with reference to FIG. 9, in the first embodiment, after the sheet 10 (see FIG. 3) is folded in three, the portions to be the bottom portions 4, 5, 6 (see FIG. 1) are exceeded. By welding with a sonic seal, a fusing seal, or a heat seal, and removing unnecessary portions (see the cutout portions 23 and 25 in FIG. 3A), the bottom portions 4 of the three sheets 1, 2, and 3 are removed. Five or six seal portions are formed. In this case, the portions to be the bottom portions 4, 5 and 6 are welded with ultrasonic waves or hot blades, and at the same time the unnecessary portions are cut, or the portions to be the bottom portions 4, 5, 6 After sealing with heat seal etc., the said unnecessary part is cut off with a cutter (refer FIG. 18).

  In this bottom sealing step, the strength of the bottom seal between the sheet 2 having the surface B and the sheet 3 having the back surface is desired to be as strong as possible, while the bottom seal between the sheet 1 having the surface A and the sheet 2 having the surface B is desired. There is a need for the strength to be weak so that the sheet 1 can be easily peeled from the sheet 2 in the same manner as described in the side seal. Therefore, in the first embodiment, as in the side seal described above with reference to FIG. 15, the ink is solid printed between the bottom 4 of the sheet 1 and the bottom 5 of the sheet 2 (see reference numeral 32 in FIG. 19). ) No solid ink printing is performed between the bottom 5 of the sheet 2 and the bottom 6 of the sheet 3 (see FIG. 19). As a result, in the first embodiment, the seal strength between the bottom 4 of the sheet 1 and the bottom 5 of the sheet 2 (compared with the seal strength between the bottom 5 of the sheet 2 and the bottom 6 of the sheet 3). Since it becomes weak, it becomes possible to easily peel the sheet 1 from the sheet 2. At this time, if the welding is performed while cutting each of the bottoms 4, 5, 6 and its peripheral portion with an ultrasonic seal, the effect of ink is not so great. The sheet 1 becomes easier to peel off. Alternatively, the sheet 1 can be more easily peeled off by further heat sealing after cutting with ultrasonic sealing.

  Further, in the manufacturing method of the first embodiment, instead of (or with) the solid ink printing (see reference numeral 32 in FIG. 19) as described above, the hot blade is used in the fusing process with the hot blade. The thickness of the welding seal ball (see reference numeral 33 in FIG. 19) opposed to the end surface of the bottom portion 4 of the sheet 1 and the end surface of the bottom portion 5 of the sheet 2 is adjusted by adjusting the angle and shape. 5 is formed thinner than the thickness of the welding seal ball (see reference numeral 33 in FIG. 19) facing the end surface of the sheet 3 and the end surface of the bottom portion 6 of the sheet 3 (the welding seal ball 33 is lowered from above in FIG. 19). The sheet 1 may be made easier to peel off by forming a substantially tapered shape that gradually inclines in the outward direction as it goes to the front. Also in this case, the sheet 1 can be easily separated from the sheet 2 in the same manner as described above with reference to FIG.

  Next, in the manufacturing method according to the first embodiment, as described above with reference to FIG. 10, in the state where the sheet 10 is folded in three, the cutout portion 24 (upper portion of the portion that becomes the sheet 3 including the back surface) is formed. ) To form an opening of the accommodating portion formed between the sheet 2 having the front surface B and the sheet 3 having the back surface, and a lip is formed on the upper end of the sheet 2 including the front surface B. A bent portion 12 (a portion that is bent toward the outer surface of the sheet 3 including the back surface, where the adhesive margin portion 12b is formed at the approximate center thereof) is formed. Then, next, the cutting procedure of the cutout portion 24 will be described with reference to FIG.

  In the first embodiment, in order to form the opening portion of the housing portion and the lip-shaped bent portion 12, the cutout portion 24 of FIG. 3 is cut with a cutter. For this reason, at the stage of slitting with a bag making machine, the sheet 10 is tri-folded. Therefore, when the sheet 1 having the surface A is at the top, it is difficult to cut the cut portion 24 with a cutter. Therefore, while the sheet 10 is turned upside down (so that the sheet 3 having the back surface is positioned above), the sheet 10 is cut off by the first and second cutting operations as follows ( FIG. 20).

  First, in the first cutting operation, in order to make an opening (entrance) of the accommodating portion (bag portion) formed between the sheet 2 including the front surface B and the sheet 3 including the back surface, the cutout portion 24a in FIG. Cut and remove. That is, the cut line 21b and the sheet 3 on the sheet 2 side at a position about 10 mm below the folding line 21 that is the upper end of the portion where the sheet 2 including the front surface B and the sheet 3 including the back surface are folded. The cut-out portion 24a (unnecessary portion) in FIG. 3 is excised by cutting the cut-out line 21a (see FIG. 3A) on the side together (by combining both the sheet 2 and the sheet 3) and cutting them simultaneously. At the time of this cutting, as shown in FIG. 21 (a), while inserting an underlay 34 between the sheet 1 and the sheet 2, as shown in FIG. 21 (b), the cutter 35 is inserted from the back surface 3a side of the sheet 3. Then, the bending lines 21a and 21b (see FIG. 3A) are cut (the underlay 34 and the cutter 35 are simultaneously moved in parallel). By doing so, it is possible to prevent the sheet 1 from being cut while simultaneously cutting the sheet 2 and the sheet 3.

  Next, in the second cutting operation, the upper end of the portion cut by the operation shown in FIG. 21 of the sheet 3 including the back surface in order to make a lip-shaped bent portion (see 12 in FIG. 1) of the upper end of the sheet 2 on the front surface B. A cut line 21c (see FIG. 3A) at a position, for example, about 30 mm away from the (cut line 21a) is cut downward. Also in this case, as shown in FIG. 22A, the underlay 36 is placed between the sheet 2 including the front surface B and the sheet 3 including the back surface (in the opening made by the first cutting operation). Insert and cut only the sheet 3 (the cut line 21c) with the cutter 37 from the side of the back surface 3a of the sheet 3 (the sheet 2 is not cut because of the underlay 36. The underlay 36 and the cutter 37 are simultaneously I will move it). Thereby, as shown in FIG. 22A, the cutout portion 24b (unnecessary portion) is cut out from the sheet 3. The portion of the sheet 2 facing the cut portion 24b of the cut sheet 3 (not cut due to the underlay 36) becomes a lip-shaped bent portion 12 (see FIG. 1) (see FIG. 22). b)). Then, from the state of FIG. 22B, by cutting in the illustrated vertical direction so as to become individual envelopes, as shown in FIG. A triple envelope in which the sheet 1 and the sheet 2 are provided with lip-shaped bent portions 11 and 12, respectively, is formed.

  Next, the usage method in the case of using the triple envelope (refer FIG.22 (c)) by the present Example 1 as an envelope with a reply envelope is demonstrated. As shown in FIG. 23, the sender of the outgoing credit envelope first attaches a tack seal or the like on which the address is written or printed on the surface A of the sheet 1 in the same manner as an ordinary envelope. Next, as shown in FIG. 24, the sender turns over the triple envelope and puts the contents of the document etc. in the accommodating portion (bag portion) formed between the sheet 3 on the back surface and the sheet 2 on the front surface B. Put object 38. In this case, the space between the sheet 1 on the front surface A and the sheet on the back surface B is also an accommodating portion (bag portion), but care is taken not to enter it here.

  Next, as shown in FIG. 25, the sender peels off only the tape (release paper) 39 attached to the surface A side of the sheet 1 (with the tape on the surface B side of the sheet 2 as it is). Along the fold line 11a (see FIG. 1) in which perforations and the like are formed in advance, the lip-shaped bent portion 11 of the sheet 1 together with the lip-shaped bent portion 12 (see FIG. 1) of the sheet 2 3 is folded to the back surface 3a side, and the adhesive portion of the glue margin portion 11b (see FIG. 2) of the sheet 1 is brought into contact with the glue receiving portion 3c (see FIG. 2) of the sheet 3 to seal, Mail.

  Next, as shown in FIG. 26, the recipient (responder) who has received the mailed envelope receives only the sheet 1 including the surface A on which the address is written in order to use the envelope again. Strip off. Then, since the sheet 1 does not exist, an envelope composed of the unused sheet 2 on the front surface B and the sheet 3 on the back surface is obtained. Therefore, as shown in FIG. 27, the receiver (replyer) can use this as in a normal envelope. In other words, the receiver (replyer) writes the address of the destination (in this case, the sender of the outgoing envelope because it is a reply) on the surface B of the sheet 2, and the accommodating section between the sheet 2 and the sheet 3. Put the contents (reply letter etc.) in the inside, peel off the tape (release paper) 40 in the bent part 12 at the upper end of the sheet 2, and put the adhesive part of the glue margin part 12b (see FIG. 2) on the sheet 3 can be sealed and put in and mailed by contact with the glue receiving portion 3b (see FIG. 2) on the back surface.

  Although the embodiments of the present invention have been described above, the present invention and the constituent elements constituting the present invention are not limited to those described as the above embodiments and the respective elements constituting the embodiments, but various. Accordingly, the invention is intended to cover modifications and variations that fall within the scope of the appended claims and their equivalents. For example, in Example 1 described above, the triple envelope used for a letter or a document containing a seal is illustrated, but the present invention is not limited to this, and a bag for storing a tangible object other than a letter or document (in a broad sense). Of course, the present invention can also be applied to a kind of envelope. That is, the triple envelope according to the present invention has, for example, a triple envelope for storing fruit (a column for entering a production history such as a time when a pesticide is sprayed or a time when fertilizer is applied for fruit cultivation is printed on the cover. The present invention can also be applied to a triple envelope for storing a tag (a triple envelope for storing a tag attached to the surface of a package when the package is transported).

The top view for demonstrating the three sheet | seats which comprise Example 1 of this invention. The figure which shows the back side of three sheets of FIG. (A) is a figure which shows the sheet | seat for manufacturing this Example 1, (b) is a figure which shows the back side. FIG. 3 is a diagram for explaining a manufacturing method according to the first embodiment. FIG. 5 is a diagram for explaining the manufacturing method of the first embodiment. FIG. 3 is a diagram for explaining a manufacturing method according to the first embodiment. FIG. 5 is a diagram for explaining the manufacturing method of the first embodiment. FIG. 3 is a diagram for explaining a manufacturing method according to the first embodiment. FIG. 3 is a diagram for explaining a manufacturing method according to the first embodiment. FIG. 3 is a diagram for explaining a manufacturing method according to the first embodiment. FIG. 3 is a diagram for explaining a manufacturing method according to the first embodiment. FIG. 3 is a diagram for explaining a manufacturing method according to the first embodiment. FIG. 3 is a diagram for explaining a manufacturing method according to the first embodiment. FIG. 3 is a diagram for explaining a manufacturing method according to the first embodiment. FIG. 3 is a diagram for explaining a manufacturing method according to the first embodiment. FIG. 3 is a diagram for explaining a manufacturing method according to the first embodiment. FIG. 3 is a diagram for explaining a manufacturing method according to the first embodiment. FIG. 3 is a diagram for explaining a manufacturing method according to the first embodiment. FIG. 5 is a diagram for explaining the manufacturing method of the first embodiment. FIG. 3 is a diagram for explaining a manufacturing method according to the first embodiment. FIG. 3 is a diagram for explaining a manufacturing method according to the first embodiment. FIG. 3 is a diagram for explaining a manufacturing method according to the first embodiment. FIG. 3 is a diagram for explaining a usage method of the first embodiment. FIG. 3 is a diagram for explaining a usage method of the first embodiment. FIG. 3 is a diagram for explaining a usage method of the first embodiment. FIG. 3 is a diagram for explaining a usage method of the first embodiment. FIG. 3 is a diagram for explaining a usage method of the first embodiment.

Explanation of symbols

1, 2, 3, 10 Sheet 1d, 2d, 3d Side face 4, 5, 6 Bottom 7, 8, 9 Side 11, 12 Folded part 11a, 12a, 21, 22 Folded line 11b, 12b Glue margin 21a, 21b, 21c, 23a, 23b, 25a Cut line 23, 24, 24a, 24b, 25 Cut part 31 Ink 32 Hot blade 33 Seal part (seal ball)
35, 37 Cutter 38 Contents

Claims (5)

The first sheet, the second sheet, and the third sheet are overlapped in the order of the first, second, and third, and the portions that face each other at the bottom and the sides are fixed to each other. To form a first accommodating portion for accommodating a document or other tangible object between the first sheet and the second sheet, and accommodate a document or other tangible object between the second sheet and the third sheet. A first opening that opens above the first receiving part by opening each upper end of the first, second, and third sheets to each other; and A triple envelope formed with a second opening that opens above the second housing,
The first sheet includes a first main body portion that forms a front side that can display a destination when viewed from a user of the first housing portion, and a lip-shaped first that extends upward from the first main body portion by a first distance. A first bent portion that is a bent portion and can be bent so as to block the first opening and the second opening together, and above the side of the first bent portion facing the first opening. A first adhesive margin formed by attaching an adhesive part to the part,
The second sheet, the second body portion for forming a front side of the back side and the second housing part of the first housing portion, the first from the "first distance upward from said second body portion a second bent portion vertically shorter second distance than the distance obtained by subtracting the distance "a second bent lip-shaped extending only bendable so as to close the second opening of the overlap portion, wherein A second adhesive margin portion formed by adhering an adhesive portion and a release paper on the upper portion on the side facing the second opening in the second bent portion;
The third sheet is disposed in a third main body portion that forms a back side of the second housing portion and an upper portion in the third main body portion, and the third folding portion is bent when the second bent portion is bent. A second glue receiving portion against which two glue margins abut, and a lower portion of the third main body portion below the second glue receiving portion, and the first folding portion is bent when the first folding portion is bent. A first glue receiving portion against which one paste margin portion comes into contact ,
Accordingly, (a) a desired tangible object can be accommodated in the first accommodating portion, the first sheet is set as a front side for destination display, the third sheet is set as a back side, and the first bent portion is used to store the first tangible object. And a forward envelope capable of closing the first and second openings above the second accommodating portion, and (b) from the state (a), the first sheet is removed from the second sheet The desired tangible object can be accommodated in the second accommodating portion simply by peeling along the fixed portion, the second sheet is the front side for destination display, the third sheet is the back side, and the second A triple envelope characterized in that a return envelope capable of closing the second opening above the second accommodating portion by the bent portion can be configured . A triple envelope including two storage parts for storing documents and other tangible objects,
The single sheet, comprising a first portion Do that the surface A of the being one arranged on the end side of the first envelope, the surface B of the other side are arranged on the end side of the second envelope first Along each fold line divided into three parts: a part 2 and a third part which is disposed between the two parts and a third part which is a common back surface of the surface A of the first envelope and the surface B of the second envelope Are folded in such a manner that the upper end portion of the first portion protrudes upward from the second and third portions, whereby the second and third portions are formed on the upper end portion of the first portion. the third form of the first lip-shaped bent portions foldable towards portion, the first, by sealing the bottom and both side portions facing each other of the second and third portions, the first And the second portion forms a first accommodating portion, and the second and third portions make the second Accommodating portion is formed by ablating the second portion and the third portion and the fold line or the periphery thereof divided into the fold line substantially parallel, an opening of the second housing part Then, by cutting a lower portion of the upper end portion of the third portion after cutting by the first cutting step substantially parallel to the fold line, the third portion is formed on the upper end portion of the second portion. A triple envelope manufactured by forming a second lip-shaped bent portion that can be bent in the direction of the upper end of the portion. In claim 1 or 2,
The first, second, and third sheets are formed of plastic sheets,
Ink is printed at a predetermined density in advance between both sides of the first sheet and both sides of the second sheet and / or between the bottom of the first sheet and the bottom of the second sheet. By this ink, the strength of the welded seal portion between the both sides of the first sheet and the both sides of the second sheet, and / or the bottom of the first sheet and the bottom of the second sheet The strength of the welding seal portion is the strength of the welding seal portion between the both side portions of the second sheet and the both side portions of the third sheet, and / or the welding between the bottom portion of the second sheet and the bottom portion of the third sheet. A triple envelope characterized by being smaller than the strength of the seal portion. In claim 1, 2, or 3,
The first, second, and third sheets are formed of plastic sheets,
The thickness of the welding seal part between the both sides of the first sheet and the both sides of the second sheet and / or the welding seal part between the bottom of the first sheet and the bottom of the second sheet The thickness of the welded seal between the both sides of the second sheet and the third sheet and / or the bottom of the second sheet and the bottom of the third sheet A triple envelope, characterized in that it is formed thinner than the thickness of the welded seal portion in between. A method of manufacturing a triple envelope including two storage parts for storing documents and other tangible objects,
The single sheet, comprising a first portion Do that the surface A of the being one arranged on the end side of the first envelope, the surface B of the other side are arranged on the end side of the second envelope first Along each fold line divided into three parts: a part 2 and a third part which is disposed between the two parts and a third part which is a common back surface of the surface A of the first envelope and the surface B of the second envelope Are folded in such a manner that the upper end portion of the first portion protrudes upward from the second and third portions, whereby the second and third portions are formed on the upper end portion of the first portion. A three-fold process for forming a first lip-shaped bent portion that can be bent toward the third portion;
The first, second, and third portions form a first receiving portion by sealing the opposite bottom portions and both side portions of the first, second, and third portions, and the second and second portions. A sealing step of forming a second accommodating portion by the portion of 3,
A first cutting step of forming an opening of the second accommodating portion by cutting a fold line that separates the second portion and the third portion or a peripheral portion thereof substantially in parallel with the fold line; ,
By cutting away the lower part of the upper end portion of the third portion after cutting by the first cutting step substantially parallel to the fold line, the third portion is formed on the upper end portion of the second portion. A second cutting step of forming a second lip-shaped bent portion that can be bent in the direction of the upper end portion of
A method for producing a triple envelope, comprising:

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