JP2004074616A - Envelope with paper cushion, its manufacturing method and manufacturing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain an envelope with a paper cushion using a device capable of continuously manufacturing a bag body in which a paper cushioning material is sealed on account of the simple structure of the envelope and simple operating procedures. <P>SOLUTION: The envelope with a paper cushion is formed by the following operating procedures: A bag body in which the paper cushioning material (C) is sealed is formed into a pair of two connected bags (A) and (A') by joining parts (D) with a set length (L). Next, the bag body is doubled at the perforations (B) of the joining parts (D), then the folded halves are lapped over each other and the right/left edge sides (D<SB>n</SB>) and (D<SB>m</SB>) of the opposed inner faces and the edge side(D') of the bottom are thermally contact-bonded to form an envelope body (F) with an opening part (M). After that, one (D<SB>1</SB>) of the joining parts (D) on the opening part side is formed longer than the other (D<SB>2</SB>) to obtain sealing flaps (D<SB>1</SB>). <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an envelope containing a paper cushion, a method for producing the envelope, and an apparatus for producing the envelope. An apparatus capable of continuously producing a paper bag body enclosing a paper cushion material by a simple structure and an operation process. Utilizing it to obtain an envelope with a paper cushion.
[0002]
[Prior art]
Generally, this type of cushioned envelope is, for example, as shown in Japanese Patent Application Laid-Open No. H11-010755, in which a waste paper cushion material with a wave is sandwiched between two base papers, and this is folded in two and the left and right edges thereof are bonded. By doing so, there is disclosed an invention that has a good buffering effect, is free from pollution by incineration after use, is suitable for the environment, and can be used for resource saving.
[0003]
[Problems to be solved by the invention]
However, in the above-mentioned invention, a waste paper cushion material with a wave cut into a predetermined size is sandwiched between two base papers, and the sandwiched base paper is cut into a predetermined length via a cutter mechanism and then folded into two. The left and right edges are glued to form an envelope. For this reason, it was necessary to provide two cutter mechanisms in this envelope processing machine, and it was not possible to process an ultra-long paper roll in a connected state without cutting in the middle of the process.
[0004]
[Means for Solving the Problems]
The present invention is provided to solve the conventional problems and achieve the object of the invention. A first aspect of the present invention is that, in an envelope containing a paper cushion, a bag body enclosing a paper cushion material is formed into a pair of connecting bag bodies by a connecting portion having a predetermined length, and a pair of connecting bags having a predetermined length is formed. The left and right edges and the bottom edge of the opposing inner surface are heat-pressed to form an envelope having an opening, and one of the joining portions on the opening side is formed longer than the other to form a sealing tongue. It is what it was.
[0005]
According to a second aspect of the present invention, in the method for manufacturing an envelope containing a paper cushion, a thermocompression bonding agent is applied to the outer surface of the upper base paper and the opposing surfaces of the upper and lower base papers to form a roll so as to support the upper and lower base papers at all times. After inserting the space between the upper frame body and the lower frame body with the heater with the spacing of the setting while maintaining the set interval, after supplying the paper cushion material between the upper and lower base paper at the position of the upper and lower frame bodies, The length of the bag is determined by the number of rotations of the bag drawer roller based on the sensor, and the start or stop of the drawer is started or stopped. At the same time, the first bag body is formed by forming a perforation on the heat-pressed portion corresponding to the base side of the upper frame body with a perforation forming cutter synchronized with the upper frame body, and then the first bag body is formed by the bag body pull-out roller. When you pull out one bag At the position of the upper and lower frame members, after being pulled out from the first bag member by the length of the sealing tongue and stopped, and forming the second bag member in the same step as the first bag member, The second bag is pulled out by the bag pulling roller, and after forming the same bag as the first bag at the rear of the second bag, the bag is pulled out and pinched at the position of the bag pulling roller. At this time, the front bag separating roller is separated from the perforation at the joint between the first bag and the second bag by continuing to rotate while holding the second bag. After forming a pair of bag bodies by using a folding mechanism, the perforations are creased by a folding mechanism and then folded in two, and then three peripheral edges excluding one tongue side are thermocompressed by a thermocompression mechanism.
[0006]
A third aspect of the present invention is an apparatus for manufacturing an envelope containing a paper cushion, in which an upper frame and a lower frame which always maintain a set interval for inserting upper and lower base papers are arranged so as to be able to move up and down with respect to each other. A perforation forming cutter is provided at the rear of the upper frame so as to be able to move up and down in synchronization with the upper frame, and a thermocompression bonding agent is applied to the outer surface of the upper base paper, and the upper base paper and the lower base paper are opposed to each other. A thermocompression bonding agent is applied to the inner surface or one of the surfaces, and the upper and lower base papers are rolled and supported, and a paper cushion material is supplied between the upper base paper and the lower base paper, and the sensor senses them. In order to start or stop the drawer by determining the size of the bag by the number of rotations of the bag drawer roller in, provided with upper and lower bag drawer rollers to pull out the connected bag formed by enclosing the cushion material, The bag drawer At the front of the stirrer, a bag separating roller is installed to separate the connecting bag held by the draw-out roller into two pairs at a perforation, and the pair of connecting bags is folded in two. A heat-pressing machine comprising a pressing upper frame and a lower frame with a heater for forming an envelope body having an opening by heat-pressing the left and right edges and the bottom-side connecting portion of the opposed inner surface thereof to form an envelope body. In the total length of the connecting portion on the opening side, one length of the connecting portion is set longer than the other length to form a sealing tongue.
[0007]
【Example】
An embodiment based on the above means will be described. Reference numeral 1 denotes a base, which supports the rolls Pr and Pr 'which are wound up and down a very long roll, and is provided with a heating / compression bonding machine / bag pulling roller, a bag separating roller, and the like. . Reference numeral 2.3 denotes a thermocompression bonding machine for thermocompression bonding of upper and lower base papers P and P '; reference numeral 2 denotes a U-shaped upper frame body which presses around the left and right edges of the base paper and the rear edge in the traveling direction. Reference numeral 3 denotes a lower frame having a heater for heating and pressing and having substantially the same shape as the upper frame 2.
In FIG. 2, the upper frame 2 and the lower frame 3 are always kept at a set interval h, and are arranged so as to be able to be pressed into contact with each other by heat and pressure as shown by a chain line.
[0008]
Reference numeral 4 denotes a perforation forming cutter provided on the rear side of the upper frame 2 and is set so as to move up and down in synchronization with the upper frame 2. 5.5 'is a groove hole into which the perforations molding eyes cutter can pass the left and right sides 2 ₁ - 2 2 U-shaped upper frame 2 and lower frame _{3, 3 1,} 3 ₂ integrally It is formed on the base side ₂ 3, _{3 3} for connecting. Incidentally, wherein the base side ₂ 3, _{3 3} Width In the illustrated example, is set to 20 mm.
[0009]
Numeral 6 denotes a bag body pull-out roller provided in front of the upper frame body 2 and the lower frame body 3, and the upper and lower upper and lower base papers, each of which is coated with a thermocompression bonding agent on the inner surface of one of the base papers whose inner surface is opposed to the lower surface. A bag formed by enclosing a thin paper cushion material C with base paper and holding the three sides D _n , D _m , and D ₁ ′ excluding the front bottom edge D _2, which has been heat-pressed in the previous process, from above and below to form a thermo-compression. The body A is pulled out and moves forward. In this case, a bag determined by the number of rotations of the roller is drawn out by a fixed size. For processing the bag A, a registered utility model registered in the applicant No. 3081999 is used. The paper cushion material C is relatively thin so as to be suitable for envelope production. The difference is that two bodies are connected in a pair, and the other bag A 'is formed longer than the bag A by the length of the sealing tongue. As the paper cushion material, for example, it can be used in the state of a sheet in the inventions of JP-A-06-179471, JP-A-06-320647, JP-A-08-224807, JP-A-09-109297 and the like. I do.
[0010]
Reference numeral 7 denotes a bag separating roller disposed in front of the bag pulling roller 6, and the bag A is connected to the stopped pulling roller 6 by driving the roller 7 and connecting the two in a pair. -Of A ', it is designed to be cut off from perforation B of connecting portion D of bag A' at the rear and cut off.
[0011]
Reference numeral 8 denotes a pressure cylinder for vertically moving the lower frame 3 and the upper frame 2 provided with a heater for heating and pressing the base paper, and 9 denotes a roller for extracting the upper base paper P and the lower base paper P 'by sensing the paper cushion material C. 6 is a cushion supply sensor for starting or stopping the drive, and has a configuration in which, after the paper cushion material C has passed, the lower frame 3 rises or the upper frame 2 descends.
[0012]
Reference numeral 9 'denotes a color sensing sensor, which may be configured to determine the drawing length of the base paper PP to form the bag body by detecting a colored cut print portion on the base paper. In this case, for the color cut printing, there is also a method of mixing white ink or another color ink into the adhesive for heat and pressure bonding.
[0013]
Pr · Pr ′ is a roll body formed by rolling an ultra-long upper base paper P and a lower base paper P ′, and this is supported on the base 1 by a bearing. Then, a thermocompression bonding agent is applied to the outer surface of the upper base paper P for forming the bag body containing the paper cushion material, and the thermocompression bonding agent is applied to the inner surfaces of the upper and lower base papers P and P 'or one of the base papers. Keep it. In the illustrated example, the coating is applied to the entire inner and outer surfaces of the upper base paper, but it is sufficient if the coating is applied to at least the peripheral edge necessary for forming the bag.
[0014]
Reference numeral 10 denotes a center folding mechanism which is folded back along the perforation B of the connecting portion D of the pair of two connecting bags A and A 'at the front of the bag extracting roller 6, and the example of FIG. The first bag body A located at the right side is erected in the 90-degree direction from the horizontal state by folding the perforation B of the connecting portion, and further tilted in the 180-degree direction to the second bag body A 'located at the rear position. in order to be folded, it is mounted a folding device 10 ₃ to the piston 10 _{and second} cylinder 10 _1. Turnable operation of the folding device is capable of performing the base of the rod end portion of the piston 10 ₂ and the folded member and meshed by a gear, with an equal known mechanism by meshing of the rack and pinion. Further, by driving the conveyor 14 in a stopped state and standing from said folded member 10 ₃ by a horizontal first bag member A until perpendicular close, through the rungs 10 3 _'of the folding device The first bag body A is folded back at the perforation B of the connecting and connecting portion D '.
[0015]
The length L 'of the connecting portion D' of the pair of connecting bags A and A 'is set to 20 mm so that a perforation is formed in the middle of the connecting portion D'. The length L of the connecting portion D between the front end and the rear end of the bag body A · A ′ in the longitudinal direction is set to 40 mm. The length _{L 1} of one of the connecting portion _{D 1} is 30.0 mm, the length _{L 2} of the other joint is as perforation B enters at the position of 10.0 m, sealing the long joint portion _{D 1} As a tongue piece. The length L of the connecting portion D can be set arbitrarily, and the length L of the tongue piece is not limited to 40 mm but can be set to about 35 to 50 mm. It is the same as the length L '(20 mm) of D'.
[0016]
11 envelopes having a 'lateral edge D _n · D _m and the bottom edge D ₁ of the opposed inner surfaces of _the' opening M by thermocompression bonding the three sides of · D 2 _'2 fold to bag A · A superimposed This is a heating and pressing machine for molding F, and has substantially the same structure as the lower frame 3 with a heater for forming a bag and the upper frame 2 for pressing, and one of the upper frame 12 and the lower frame 13 or Heating heaters are incorporated in both, and the upper and lower frame members are moved up and down to heat-press the three peripheral edges of the folded bag body A · A ′.
[0017]
[Specific manufacturing process example]
Next, a process for producing the envelope with a paper cushion according to the present invention will be described. First, the excess portion of two or more bags of the upper and lower base papers P and P 'which are unwound from the rolls Pr and Pr' is stopped in a state where the excess portion is held between the pull-out roller 6 and the separation roller 7 ahead of the pull-out roller 6. (Not shown). Then, using the registered utility model registered in Japanese Patent No. 3081999 owned by the applicant of the present application, the upper and lower heating frames 2.3 heat and press the peripheral edges of the upper and lower base papers P and P 'in which the thin paper cushions C are sealed. To form the first bag A, connect the bottom sides of the first bag A with the connecting portion, and form the second bag A 'located at the rear position by forming the sealing tongue piece longer than the bag A. It is designed to be molded.
[0018]
"Processing of joint part D 'for folding back of connecting bag body A-A'"
A base 3 ₃ of the lower frame member 3 with the heater, folded for connecting portions by thermocompression bonding the upper and lower sheet P · P 'at the base 2 ₃ frame member upper perforation cutter 4 is inserted through the slot 5 D ′ is formed, and a perforation B is formed along the width direction of the joint. The connecting portion D 'at this time is set to a set length L' (= 20.0 mm), which is the length L ₁ 'of the connecting portion D ₁ ' located at the front portion of the first bag body A and the rear portion D. ₂ 'of length _{L 2' 1 (= 10.0mm)} : 1 (= 10.0mm) as roulette B in the center (central portion of the left end and 4 of Figure 1, Figure 3).
[0019]
"Processing of the joint D on the opening side of the connecting bag A / A '"
Subsequent to the above-mentioned "0018""Processing of the joint portion D 'for folding back of the connecting bag bodies A and A'", a relatively thin paper cushion material C is supplied between the upper base paper P and the lower base paper P '. . Then, the driving of the bag extracting roller 6 is started by the detection of the sensor 9, and the cushion material is included in the upper and lower base papers P and P ', and the length of the bag A is set to correspond to the tongue. The bag pull-out roller rotates so as to be longer by the length (20 mm in the illustrated example) and sends it to the upper and lower frame members 2 and 3 to stop. In this case, the paper cushion material C is set to the same length as that included in the first bag A located at the front position. Subsequently, the upper frame 2 is lowered and the lower frame 3 is raised and thermocompression-bonded, so that the upper and lower base papers P and P ′ on which the first bag A is to be formed are thermocompressed in the previous step. The three sides D _n , D _m , and D ₁ , excluding the connecting portion D ₂ ′, are superimposed at the same time and are heat-pressed by the upper frame 2 and the frame 3 with a heater. The connecting portion D formed by the heat compression bonding has a set length L (= 40 mm), and the connecting portion D ₁ = 3 (30 mm) serving as a tongue piece: the connecting portion D ₂ = 1 serving as the opening side edge of the next bag. A perforation B is formed at a ratio of (10 mm) (the connecting portion D on the right side from the left end portion in FIGS. 1 and 3 and the connecting portion D on the right end in FIG. 4).
[0020]
In this state, the upper and lower draw rollers 6 are rotated to drive the front side of the bag body A forward and downward while holding the left and right edges D _n and D _m of the bag body A at the front position.
[0021]
Then, the sensor 9 detects that the paper cushion material C has been supplied, and each bag is pulled out by a set size according to the number of rotations of the bag pull-out roller 6 and moves forward. In the embodiment, the second bag A ′ located at the back of the first bag A located at the front position is pulled out so as to be longer by the length L ₁ (20 mm) serving as the tongue for sealing. After that, the driving of the drawer roller 6 is stopped. At this time, the driving of the bag separating roller 7 is stopped together with the pull-out roller 6.
[0022]
In this position, the base 3 ₃ of the lower frame member with a heater, connecting and thermocompression bonding the upper and lower sheet P · P 'in the frame base 2 ₃ on which perforation cutter 4 is inserted through the slot 5 parts D is formed and a perforation B is formed along the width direction of the joint. The length of the connecting portion D of this time L (= 40.0 mm), which connecting section _{D 1} in the advance direction of the distal end side 3 (30.0 mm), the connecting portion _{D 2} of the proximal one (10. 0 mm). Note that, of the length L (= 40.0 mm) of the connecting portion, the portion subjected to the heat compression bonding is half (20 mm) near the edge. Thereby, the longer connecting portion D ₁ (30.0 mm) becomes a tongue for sealing. At the same time, the remaining connecting portion D ₂ (10.0 mm) becomes the opening side edge of another bag located next.
[0023]
From this state, the upper and lower bag drawer rollers 6 are driven to rotate so that the drawer rollers firmly clamp the left and right edges of the second bag body A ′ that covers the paper cushion material C from above and below.
[0024]
The state of FIG. 1 is obtained by repeating the above steps “0018” to “0019” again.
[0025]
In the state shown in FIG. 1, the first bag A at the front is located at a position forward of the bag separation roller 7, and the second bag A ′ at the rear is moved right and left by the bag separation roller 7. The left and right edges of both side edges D _n and D _m are sandwiched. The drawer roller 6 sandwiching the left and right sides edge D _n · D _m of the bag body A in the succeeding than second bag member A '.
[0026]
In this state, the rotation drive of the bag pull-out roller 6 is stopped. On the other hand, the bag separating roller 7 holding the second bag A ′ is driven to rotate in the traveling direction, so that the first bag holding the second bag A ′ with the pull-out roller 6. The body A is separated from the body A at the perforation B of the joint D so as to cut off, thereby obtaining a pair of two connected bag bodies A and A '.
[0027]
"Manufacture of envelopes with paper cushions"
5 and 6,
After moving the bag A · A 'that are connected by two pairs in front of the bag separating roller 7 via the conveyor 14, the cylinder 10 ₁ of the folding mechanism 10 of the piston rod 10 ₂ S ₁ ...... When pushing in the direction of S _n, first bag member a is erected to 90 ° direction to fold the perforation B by the operation of the folding device ₁₀₃ which is connected to a rod tip section, an additional 180-degree direction to the debt Then, it is folded in two on the second bag A '. The turning operation of the folding tool is performed by a known folding mechanism such as meshing of a gear or meshing of a rack and a pinion between the rod distal end portion and the base of the folding tool. Further, said first bag member A in the folded tool 10 ₃ stops in a standing state from a horizontal state to a right angle near and moving the conveyor 14 in this state, the first bag member A are standing The folding tool is forcibly dived and passed through the horizontal rail 10 ₃ ′, and is easily folded at the perforation B of the connecting joint D ′.
[0028]
Next, the folded connection bag A · A ′ is moved forward by the conveyor 14 and sent to the thermocompression bonding machine 11, where the left and right edges D _n · D _m and the bottom edge of the bag A · A ′ By heat-pressing three sides of the connecting portions D ₁ ′ and D ₂ ′ with upper and lower U-shaped frames 12 and 13 of the heat-pressing machine 11, an opening M is formed and the first bag body is formed. envelope body F of the connecting portion D ₁ of the second bag member a 'is sealing tongue pieces formed length L _{1 (30} mm) as long as the setting from the joint portion D ₂ of the opening side edges of a molding Is done. In this case, the width of the connecting portion _{D 1} is thermocompression bonding length _L 1 (30 mm) is the same 10mm length _{L 2} of the connecting portion _{D 2} in which the perforations B as a boundary.
[0029]
【The invention's effect】
The present invention has the following effects since it has the above configuration. That is, the bag body containing the paper cushion material, which is connected in a pair, is folded back to two from the perforation of the connecting portion and overlapped, and the cushioned envelope body is formed simply by heating and pressing the three sides of the left and right edges and the bottom edge. it can. In addition, since the tongue for sealing is formed in the opening, it is possible to reliably seal the container after the container is put therein.
[0030]
Further, a pair of connecting portions of the bag body formed by the bag manufacturing apparatus can be shortened by making a pair of connecting portions short so that a perforation is formed in the middle thereof to form a folded portion. The sealing tongue piece can be reliably formed by forming a part, and cutting and cutting this part by perforating the long connecting part and the short connecting part.
Moreover, according to the manufacturing method and the manufacturing apparatus according to the present invention, there is an effect that envelopes of various sizes, such as regular and non-standard-sized envelopes, can be obtained.
[Brief description of the drawings]
FIG. 1 is a schematic front view of an apparatus for manufacturing an envelope containing a paper cushion according to the present invention.
FIG. 2 is a side view of FIG.
FIG. 3 is a plan view of a main part of FIG. 1;
FIG. 4 is a perspective view of a connection bag body with a paper cushion according to the present invention.
FIG. 5 is a schematic front view of a folding mechanism of a pair of two connection bags.
6 is a sectional view taken along line 6-6 in FIG.
FIG. 7 is a perspective view of a folded connection bag body.
FIG. 8 is a front view of a thermocompression bonding machine for a pair of two connected bags, which is folded in two.
FIG. 9 is a plan view of the upper (lower) frame with a heater of the thermocompression bonding machine, on the side of the compression surface;
FIG. 10 is a sectional view taken along the line 10-10 in FIG. 9;
11 is a cross-sectional view of a thermocompression bonding machine in which the edges of a connection bag body folded in two from the state of FIG. 10 are bonded.
FIG. 12 is a perspective view of an envelope with a paper cushion according to the present invention.
[Explanation of symbols]
REFERENCE SIGNS LIST 1 base 2 upper frame 3 lower frame 4 with heater 4 perforation forming cutter 5 slot 6 bag drawer roller 7 roller for separating bag from perforation 8 cylinder for vertical movement of lower frame 9 cushion material Supply sensor 10 (10 ₁ to 10 ₃ ) Two-folding mechanism 11 for two paired connecting bags 11 Heat-pressing machine 12 for pairing two connecting bags 12 Upper frame 13 for pressing of heat-pressing machine Lower frame A with heater A First bag A 'Second bag B Perforation C inserted in the joint of connecting bag Paper cushion material D'D' Joint of connecting bag Dn-Dm Connecting bag Left and right edges F of the envelope M The opening of the envelope

Claims (3)

The bag body enclosing the paper cushion material (C) is formed into a pair of connecting bag bodies (A) and (A ') by a connecting part (D) having a set length (L), and the connecting part is formed. The envelope body (F) having an opening (M) is folded by folding it from the perforation (B), and heat-pressing the left and right edges (D _n ) and (D _m ) and the bottom edge (D ′) of the opposing inner surface. ), And one (D ₁ ) of the connecting portions (D) on the opening side is formed longer than the other (D ₂ ) to form a sealing tongue piece (D ₁ ). Envelope containing. A thermocompression bonding agent is applied to the outer surface of the upper base paper (P) and the opposing surfaces of the upper and lower base papers (P) and (P ') to form a roll body (Pr) and (Pr') to support the upper and lower base papers. The base papers (P) and (P ') are always kept at a set interval (h) and inserted between the upper frame (2) and the lower frame (3) with the heater, which constitute the heating and pressing machine, After the paper cushion material (C) is supplied between the upper and lower base papers (P) and (P ') at the positions of the upper and lower frames, the number of rotations of the bag pull-out roller is detected by the sensors (9) and (9'). The length of the bag is determined and the drawing is started or stopped, and the upper and lower frames (2) and (3) for heating and pressing are moved up and down, and the peripheral edges of the upper and lower base papers (P) and (P '). thermocompression bonding a top frame and tunes perforation molding cutter heat pressing portion corresponding to the base side of the upper frame (2 ₃₎ simultaneously (4 To form a first bag body (A), and then draw out the first bag body (A) by a bag body drawing roller (6), and form an upper and lower frame body (2). At the position of (3), the second bag (A) is pulled out longer than the first bag (A) by the length of the sealing tongue and stopped, and the second bag (A) is formed in the same step as the first bag. '), The second bag (A') is pulled out by the bag pulling roller (6), and the same bag as the first bag is placed at the rear of the second bag (A '). After the body is formed, it is pulled out and stopped while being held at the position of the bag body pull-out roller (6). At this time, the front bag body separation roller (7) removes the second bag body (A '). By continuing the rotation while holding it, it cuts from the perforation (B) of the joint (D) between the first bag and the second bag. After forming a pair of bags (A) and (A ') apart from each other, the bag is folded at the perforation (B) by the folding mechanism (10), and then folded by the thermocompression bonding mechanism (11). A method for producing an envelope containing a paper cushion, wherein three peripheral edges except for one side of the tongue are heat-pressed. The upper frame (2) and the lower frame (3), which always keep the set interval (h) for inserting the upper and lower base papers (P) and (P '), are arranged so as to be able to move up and down with respect to each other. At the rear of the upper frame (2), a perforation forming cutter (4) is provided so as to be able to move up and down in synchronization with the upper frame, and to apply a thermocompression bonding agent to the outer surface of the upper base paper (P). A thermocompression bonding agent is applied to the opposing inner surface of the upper base paper (P) and the lower base paper (P ') or one of the surfaces, and the upper and lower base papers (P) and (P') are rolled (Pr). (Pr '), and a paper cushion material (C) is supplied between the upper base paper (P) and the lower base paper (P'), and the sensor (9) and (9 ') detect the paper cushion material (C). The size of the bag body is determined by the number of rotations of the bag body pull-out roller to start or stop the drawing, and the cushion material is included. Upper and lower bag drawer rollers (6) for drawing out the formed connecting bag bodies (A) and (A ') are provided, and a connecting bag body held between the drawer rollers (6) in front of the bag drawer rollers (6). A) A bag separation roller (7) for separating (A ') two pieces in a chopped state at the perforation (B) is installed, and the pair of two connection bags (A). A center folding mechanism (10) for folding (A ') into two parts, and left and right edges (D _n ) and (D _m ) of the opposing inner surface and a connecting portion (D ₁ ') and (D ₂ ') on the bottom side. A thermocompression bonding machine (11) including an upper frame (12) and a lower frame (13) for forming an envelope having an opening (M) by thermocompression bonding is provided, and a connecting portion (D) on the opening side is provided. in the total length (L) of) one of the connecting portion _{(D 1)} the length of _{(L 1)} the length of the other _{(D 2) (L 2)} Sealing tongues set longer (D ₁₎ forming the paper padded envelopes manufacturing apparatus.

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