JP2006312487A - Envelope with cushion and apparatus for manufacturing its envelope - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a packaging apparatus with a flap with cushioning properties. <P>SOLUTION: The packaging apparatus has a following constitution. An upper mold body (2) for pressure-bonding three ways of upper and lower side original papers (P) and (P') whose facing inner faces are arranged with one face corrugated boards, and a lower mold body (3) with a heater are arranged so as to mutually move up and down. A pressing mold for adhesion and a cutter (4) for forming perforation are provided on a lateral side of a base part of the upper mold body (2). The width (W1) of one side of the lower side original paper is made narrower by a part corresponding to the length (Wn) of the flap for enclosing an opening than the width (W) of one side of the upper side original paper. A double-sided adhesive tape (T) is stuck along the edge side of the flap. A drawing-out roller (6) is provided for delivering forward one side edge sides (P<SB>2</SB>) and (P<SB>2</SB>') of the upper and lower original papers and a flap site (P<SB>3</SB>') with the double-sided adhesive tape on the other side while they are pinched and pressure-bonded. At the front of the drawing-out roller of the case body, a case body separating roller (7) is provided for cutting and separating a connecting case body under a bited-off condition at the perforation formed in the middle of a linking part (E) connecting the case body (A) pinching by the drawing-out roller (6) as a boundary (B). <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an envelope with a flap that is suitable for disposal after use and requires a certain degree of cushioning, and an apparatus for manufacturing the envelope. An envelope body with a cushion provided with a flap for sealing the opening by folding the base paper fed out from one roll body in two so as to have different widths can be manufactured continuously.

In general, a buffer envelope suitable for disposal after use and an apparatus for manufacturing the same are known. For example, the first invention includes a plastic bubble sheet cushioning material having a cushioning surface positioned on the inner surface of the opposing surface, and a cutting cut is provided on the outer surface of the envelope. The envelope and the bubble sheet can be separated and discarded.
In addition, the second invention includes a plastic bubble sheet cushioning material having a cushioning surface located on the inner surface of the opposite side, and the plastic bubble sheet cushioning material is not bonded or fused to the paper envelope so that the plastic is used after use. The bubble sheet cushioning material is separated from the envelope so that it can be taken out and discarded.
Furthermore, the third invention is an envelope in which a plastic bubble sheet cushioning bag having a cushioning surface located on the opposing inner surface is included, and only its mouth is coupled to a kraft paper bag by an adhesive, and an envelope manufacturing apparatus thereof.
And 4th invention is the envelope with a buffer function which formed the envelope material formed by sticking the single-sided corrugated paper which faces each other so that it may cross-contact each other, folded in the shape of a bag, and stuck the overlap part. is there.
Invention of JP-A-2004-352253 Invention of JP-A-2004-338745 Invention of JP-A-2004-231268 Invention of JP 2002-037265

  However, since all of the inventions of Patent Documents 1 to 3 use a paper bag body and a plastic bubble sheet cushioning material, disposal after use cannot be disposed as it is and must be separated. In addition, the plastic bubble sheet cushioning material does not become a recyclable resource waste even after separation. In this respect, the present invention is different from the one that can be disposed of in a recyclable form in its original form without any changes to the package after use.

Next, the invention of Patent Document 1 is troublesome because it is necessary to make a cut in the envelope body during production and to tear it from the cut line one by one.
The invention of Patent Document 2 requires that a locking piece be provided at the mouth portion of the envelope so that the plastic bubble sheet cushioning material included in the envelope does not come out, which increases the processing steps and increases the material cost. Become.
In the invention of Patent Document 3, since the mouth portion is bonded with an adhesive so that the plastic bubble sheet cushioning bag included in the paper bag does not come out, it must be peeled off from the adhesive at the time of disposal. It is.
Next, the invention of Patent Document 4 is an envelope with a cushioning function having a corrugated cardboard surface on the inner surface, but since the adhesive surface around the trunk of the envelope is the center of the back surface, it is processed one by one manually. . It differs from what is automatically manufactured with a machine like this invention.

Therefore, the present invention is provided to solve the above-described problems.
The first aspect of the present invention is an envelope with a cushion, in which an upper base paper and a lower base paper made of single-sided corrugated cardboard are provided with a corrugated step on the inner surface facing each other and previously coated with a heating adhesive or a pressure adhesive. The flap of the opening part which glued the double-sided tape with release paper on the edge and the inner surface is heat-bonded or pressure-bonded.

  A second envelope of the present invention is a cushioned envelope, wherein a single base paper made of single-sided corrugated cardboard, which is provided with a corrugated step on the inner surfaces facing each other and previously coated with a heating adhesive or a pressure adhesive, is formed from the center in the width direction by a center folding tool The flap length is shifted and folded in half, and the left and right edges of the upper base paper and lower base paper and the inner surface of the lower base paper are bonded with heat or pressure, and the excess edge of the opening is flapped. It is what.

  In the envelope manufacturing apparatus according to the third aspect of the present invention, in order to insert an upper base paper and a lower base paper made of single-sided corrugated cardboard, in which a pressure adhesive or a heating adhesive is previously applied to the surface of the corrugated step located on the opposing inner surface. The upper mold body and the lower mold body with heaters are always arranged so that they can move up and down with each other, and an adhesive pressing mold and a perforation forming cutter are placed on the side of the base of the upper mold body. It is provided so that it can move up and down separately from the body, and the upper and lower base papers are supported as rolls, and the width of one of the base papers is set to a flap width for closing the opening from the width of the other base paper. It is shortened by the corresponding length, and a double-sided adhesive tape with release paper is applied along the edge of the flap. Set the drawer Start or stop, provided a pull-out roller that feeds forward while sandwiching and pressing the flap with double-sided adhesive tape with the release paper on the bottom side of the upper and lower base paper and the opening side, in front of the envelope pull-out roller, A separation roller is provided that cuts off a continuous envelope body in the state of a perforation formed in the middle of a connecting portion connecting the case bodies sandwiched by the drawing roller in a shredded state.

  In the envelope manufacturing apparatus according to the fourth aspect of the present invention, a single-sided cardboard base paper coated with a heat adhesive or pressure adhesive in advance on the surface of the corrugated step portion is pivoted as a roll body, and is fed out from the roll body. While setting the width of one side of the base paper to be shorter than the width of the other side and folding it in half with the center folding tool, the wavy stepped parts are faced to make a double base paper, and on the inner surface of the flap Attaching a double-sided adhesive tape with release paper along the upper and lower base paper to set the lateral length of the envelope body according to the set feed amount to start or stop the drawing, and With a lower mold body with a heater, the back side edge and the opening side flap excluding the attached front side edge are heated and pressure-bonded to form an envelope body, and then sent forward, and the joint of adjacent continuous envelope bodies is cut with a cutter. Cut and stand alone It is obtained by the tubular body.

  5th of this invention is a manufacturing apparatus of the envelope with a cushion which concerns on 3rd or 4th of this invention, and provides the mechanism which sticks a product display, a destination, or other display bodies on the outer surface of an upper base paper, or print-displays it. It is a thing.

  Since the present invention is configured as described above, the following effects can be obtained. In other words, since both the envelope and the corrugated stepped portion that acts as a cushion on the inner surface of the envelope are made of paper, they can be recycled as recyclable waste without any changes to the disposal after use. it can.

  Next, the envelope is formed by feeding out the upper and lower base papers having different width dimensions, and a flap is formed on the base paper side having the longer width, and the left and right sides and the bottom side excluding the opening on the flap side are glued. It is formed and the corrugated cardboard is formed on the opposing inner surface, so that it becomes a cushioning material, which is suitable for packaging easily breakable or breakable items.

  In claim 3, the bottom is formed without folding the single base paper from the single roll body by folding the base paper into two with different lengths of the flaps, and the left and right vertical edges are formed. An envelope can be obtained simply by gluing. Therefore, in this case, it is not necessary to provide two roll bodies, and the envelope body can be manufactured with one roll body.

  And in Claims 1 and 3, it is possible to continuously process a continuous envelope body with a flap that can arbitrarily select and store an item that requires cushioning with upper and lower base paper, and that The processing speed of the envelope body is fast and efficient. And on the one hand, the continuous envelopes fed out on the other hand can be separated one by one from the perforation through the sandwiching roller and the drawing roller while being continuously formed.

  According to the second and fourth aspects, the envelopes continuously connected while being continuously formed while being continuously formed can be separated one by one by a cutter that moves up and down.

  Furthermore, the base paper fed out from above and below uses single-sided cardboard, and a heat adhesive or pressure adhesive is applied to the cushion surface side, so that it can be used properly by one machine depending on the purpose.

Since the feed amount (dimension) of the upper and lower base papers can be set arbitrarily, the base paper P having the lateral width W = 290 mm is used on the upper side and the base paper having the lateral width W ₁ = 330 mm on the lower side. Use P '.
According to the fourth aspect of the present invention, an envelope having a size capable of accommodating a small three-dimensional object from a large three-dimensional object by folding the base paper having a width W + W ₁ = 600 mm in two is used. Can be machined.

  Then, the contents or the destination or other display body can be printed or pasted on one side of the envelope body via a display.

An embodiment based on the above means will be described. Embodiments of the present invention will be described with reference to the drawings. 1 denotes a guide plate for the case body shaping, consists under plate 1 ₂ which facing to the upper plate 1 _1, after packaging the packaged articles having reached this position so as to move to the next step Yes. Reference numeral 2 denotes an upper mold body for pressing the upper base paper P for forming the envelope body, and left and right mold bodies 2 ₁ and 2 ₂ are provided at predetermined intervals. Reference numeral 2 ₃ denotes a horizontal type for forming a connecting portion E provided in close proximity to the base portion of the upper mold body 2 (2 ₁ , 2 ₂ ). Reference numeral 3 denotes a lower mold body with a base paper welding heater having a U-shape, which is arranged so as to be able to move up and down by surrounding the lower base paper P 'so that its outer shape does not contact. In FIG. 2, the upper mold body 2 and the lower mold body 3 are arranged so as to be in pressure contact as in a chain line state from a position where they face each other at a set interval S.

  The upper base paper P and the lower base paper P ′ for forming the envelope body A use single-sided corrugated cardboard in which a corrugated step portion serving as a cushion is formed on the opposing inner surface. A heating adhesive D or a pressure adhesive D ′ is applied. This is wound to form an upper roll body Pr and a lower roll body Pr ′.

4 is a perforation forming blade provided at the rear part of the upper mold body 2 and is located at the central portion of the joint E (e · e) and provided separately from the upper mold body 2 and moves up and down independently of each other. Or, it is set to move up and down synchronously. Reference numeral 5 denotes a groove hole through which the perforation forming cutter can pass, and a base lateral side mold body provided separately from the left and right sides 2 ₁ , 2 ₂ , 3 ₁ , 3 _{2 of} the upper mold body 2 and the lower mold body 3. 2 ₃ and 3 ₃ .

Reference numeral 6 denotes a case body drawing roller provided in front of the upper mold body 2 and the lower mold body 3. This roller is made up of upper and lower base papers coated with a heating adhesive material on the inner surface of one base paper that allows the opposite inner surface or the lower side, and the envelope front horizontal side P _l · P _l that has been heat bonded in the previous step. The left and right side edges P ₂ , P ₂ ′, P ₃ ′ and the rear lateral side P ₄ , P ₄ ′ excluding ′ are sandwiched from above and below, and are heated or pressure bonded, and then moved forward. .
Of the right side P ₃ · P ₃ ′ of the continuous envelope, the lower side P ₃ ′ is a flap having a length Wn, and a double-sided adhesive tape T with release paper for sealing is disposed along the edge. Further, the upper side P ₁ is shortened by the length Wn of the flap, and only this side part is an opening without adhering the upper and lower sides P ₁ and P ₂ .

Further, the envelope base lateral sides P ₄ and P ₄ ′ are sandwiched from above and below by a base lateral side mold 2 _l provided separately from the upper mold and are heat-bonded or pressure-bonded.
In this case, the envelope body determined by the number of rotations of the roller is normally drawn out by a certain size, but it is also possible to draw out a plurality of envelope bodies by two or more by changing the setting.

  Reference numeral 7 denotes a case body separating roller disposed in front of the case body drawing roller 6, and the envelope body A is perforated B by driving the case body separating roller 7 with respect to the stopped drawing roller 6. So that it can be cut off in a state where it is completely cut off.

  8 is a pressure cylinder for vertically moving the upper mold body 2 and the lower mold body 3 with a base paper welding heater, and 9 is a part of the envelope body, and starts or stops driving of the upper and lower base paper P / P 'drawing rollers 6 The lower mold body 3 is raised or the upper mold body 2 is lowered after the envelope body passes.

Reference numeral 10 denotes a display device such as a sticking machine / stamping machine that displays the contents and address of the envelope body A on the surface of the upper base paper P using a label, a barcode label, a stamp, or the like. Reference numeral 11 denotes a cutter for cutting the continuous connecting portion E after the envelope body A is formed. The cutter 11 includes an upper movable blade 11 ₁ that moves up and down by a cylinder and a lower fixed blade 11 ₂ . Reference numeral 12 denotes a guide plate until the upper and lower base papers P ′ and P are supplied between the upper and lower mold bodies 2 and 3. In the figure, r · r ′ denotes a roller shaft for winding or guiding upper and lower base papers P · P ′.

4 and 5, 13 is a motor for moving the upper and lower mold bodies 2 and 3 up and down, 14 is a pinion provided on the take-out shaft of the motor, and 15 and 15 'are vertical racks arranged on the left and right sides of the pinion. One of them is attached to the lower mold body side, and the other 15 'is attached to the upper mold body side. Then, in the front view of FIG. 4, the upper and lower mold bodies 2 and 3 move together with the rack by the right rotation of the motor and approach each other, and the upper and lower mold bodies 2 and 3 are set apart from each other by the left rotation. Yes. 16 is a motor for vertically moving the horizontal side mold bodies 2 ₃ and perforations forming blades 4 of the upper die member 2, are meshed with a pinion provided on the take-out shaft to a vertical rack (all not shown) . The horizontal side mold bodies 2 ₃ and perforations forming blade 4 is lowered by the right rotation viewed from the front, it is set to rise in the opposite counterclockwise rotation.

12 to 14, reference numeral 17 denotes an intermediate folding tool for folding a base paper P ′ fed out from a roll body Pr ′ into two with a difference in length of a flap P ₃ ′. In the figure, T is an adhesive tape with release paper which is folded in two and stuck in the lateral direction on the inner surface of the base paper flap P ₃ ′ which is overlapped with the upper base paper P and the lower base paper P ′ with the corrugated cardboard surfaces facing each other. .

"Example of envelope manufacturing process (1)"
Next, an example of the manufacturing process of the invention will be described with reference to FIGS.
(1) As a preparatory step, the upper and lower mold bodies 2, 3 are normally opened apart from each other (FIG. 7 (a)). An opposite inner surface corrugated stepped portion, and beyond the lateral sides type body 2 ₃ lateral width (e.g. _{W = 330mm · W 1 = 290mm} ) is feeding the different vertical sheet P · P ', and a length reaching the drawer roller 6 To stop.
(2) a horizontal side mold bodies 2 ₃ is lowered by operation of the cylinder 8 ", raised thereby is bonded (FIG. 7 (a)). Which by operation of the cylinder 8 'and lower mold body 3 at the same time in this state, The tip portions P ₁ and P ₁ ′ of the upper and lower base papers P and P ′ are pressure-bonded or heat-bonded (FIG. 8A).
(3) from this state, the increase the lateral sides type body 2 _3, remain open lowers the lower mold member 3 (FIG. 7 (c)).
(4) In the meantime, a predetermined portion of the base paper is sensed by the sensor 9 and pulled out by the pulling roller 6 which is driven to feed the base adhesive part to the vicinity of the top end of the upper and lower mold bodies 2 and 3, and the cylinders 8 and 8 'are operated The left and right molds 2 ₁ and 2 ₂ of the mold body ₂ and the lower mold body 3 (3 ₁ and 3 ₂ ) are joined (FIG. 7 (d)). At this time, a display object such as a label or bar code indicating a destination or contents or a printed display G or the like is applied to the surface of the upper base paper P by the display device 10. As a result, the left side P ₂ · P ₂ ′ of the base paper P · P ′ and the double-sided tape T with release paper T · the lower right side P ₃ ′ are pressure bonded or via a heater (not shown) provided in the lower mold body 3. Heat bonding is performed (FIG. 8B). At this time, the perforation forming blade 4 is also lowered to put the perforation B into the joint E.
(5) In addition, bonded to the horizontal side mold bodies 2 ₃ horizontal side portion of the lower mold body 3 of remains elevated is lowered by driving the second motor 16 (FIG. 7 (e)). As a result, the envelope side A for one bag is completed by heat bonding or pressure bonding on the lateral sides P ₄ · P ₄ 'on the base side of the base paper P · P' (FIG. 8 (b), indicated by chain lines).
(6) Then, the envelope body A is separated from the perforation B by stopping the drawing roller 6 as necessary and rotating the biting roller 7 holding the upper and lower base paper at the front part thereof.

"Example of manufacturing process of envelope (2)"
4 and 5 show what was the motor driving source of the upper and lower mold body 2, 3 and transverse side mold member 2 ₃ and perforations forming blade 4 in place of the cylinder.
(1) As a preparatory step, the upper and lower mold bodies 2, 3 are normally opened apart from each other at a predetermined interval S (FIG. 7 (a)). Opposed inner surfaces remain off at a position beyond the transverse edges mold bodies 2 ₃ feeding the upper and lower sheet P · P 'with corrugated stepped portion.
(2) a horizontal side mold bodies 2 ₃ In this state, by rotating the pinion 14 to lower the upper die member 2 with the rack 15 by driving the first motor 13, to raise the lower mold body 3 along with the rack 15 'at the same time ( FIG. 7 (b)). As a result, the leading ends P ₁ and P ₁ ′ of the upper and lower base papers P and P ′ are heat-bonded or pressure-bonded (FIG. 8A).
(3) from this state, the increase the lateral sides type body 2 _3, kept open by lowering the upper and lower mold bodies 2, 3 (FIG. 7 (c)).
(4) In the meantime, the upper base paper P and the lower base paper P 'are fed to the vicinity of the top ends of the upper and lower mold bodies 2 and 3 by driving the motor 13, and the left and right molds 2 ₁ and 2 ₂ of the upper mold body 2 are The lower mold body 3 (3 ₁ 3 ₂ ) is joined (FIG. 7 (d)). As a result, the left side P ₂ · P ₂ ′ of the base paper P · P ′ and the double-sided adhesive tape T with release paper and the lower right side P ₃ ′ are heat-bonded or pressure-bonded (FIG. 8B).
(5) In addition, a horizontal side mold bodies 2 ₃ bonded to the lateral sides of the lower mold 3 remains elevated is lowered by driving the motor 16 (FIG. 7 (e)). As a result, the lateral sides P ₄ and P ₄ ′ on the base side of the base paper P and P ′ are heat-fitted or pressure-bonded (shown by a chain line in FIG. 8B).
(6) Then, the envelope body A is separated from the perforation B by stopping the drawer roller 6 as necessary and rotating the biting roller 7 holding the upper and lower base paper at the front part thereof.

"Example of envelope manufacturing process (3)"
(1) As a preparatory step, the upper and lower mold bodies 2, 3 are normally opened apart from each other (FIG. 7 (a)). Next, in FIG. 12, the base paper P ′ is fed out from a single roll body Pr ′ whose horizontal width (W + W ₁ ) is set to 600 mm, for example, and folded into two to form upper and lower base papers P · P ′. Stop at a length exceeding ₃ and reaching the drawing roller 6.
(2) Next, the wavy step portion is set via the middle folding tool 17 at a position where one side (W) of the base paper P ′ fed out from the roll Pr ′ is set to 325 mm and the other side (W ₁ ) is set to 275 mm. Proceed while folding in half with the facing inner surface.
(3) Next, in synchronization with the progress of the base paper, the double-sided adhesive tape T with release paper is fed out from the roll body Tr and attached to the inner surface of the flap P ₃ ′.
(4) Subsequent steps are the same as steps (2) to (5) in the above paragraph “0028” or “0029”.
(5) The continuously formed envelope A is cut with a cutter 11. That is, when the movable blade 11 ₁ that moves up and down by the cylinder descends, it is separated by the lower fixed blade 11 ₂ .

"Attaching process of tags / barcode labels"
In the paragraph (0029) (4), a display object 10 such as a tag / barcode label for displaying the address and contents is attached or printed on the plane that becomes the envelope A by the display 10.

The present invention can obtain an envelope that wraps a long straight ruler or a rod-like body, in addition to a package that dislikes impact and electrification, a CD, a cassette tape, or a relatively thin book.
And in order to adhere | attach the upper and lower base paper, a pressure adhesive can be apply | coated to the said base paper, and it can carry out pressure adhesion by clamping the upper-and-lower mold body. In this case, the heater provided in the lower mold is turned off. Further, heat bonding is applied to the upper and lower base papers, and the upper and lower mold bodies are sandwiched so that the heater of the lower mold body is turned on to allow heat bonding. Therefore, it is possible to expand that one machine can be selected and used properly according to the purpose and application.

It is a schematic front view of the packaging apparatus of the to-be-packaged item which concerns on this invention. FIG. 2 is a schematic side view of FIG. FIG. 2 is a schematic plan view of a main part of FIG. It is a schematic front view which shows the packaging apparatus of the other example of FIG. It is a schematic side view which shows the packaging apparatus of the other example of FIG. It is an enlarged front view which shows a part of FIG. It is a schematic front view which shows the operation | movement process of an up-and-down type body. It is explanatory drawing of the manufacturing process of a case body. It is a perspective view of a single case body. It is a perspective view which shows the example which the case body processed continuously. It is sectional drawing which follows the 11-11 line of FIG. + It is a schematic front view of the two-fold envelope manufacturing apparatus different from the packaging apparatus of the to-be-packaged object of FIG. It is a one part enlarged view of FIG. It is a perspective view which shows the example which processed the envelope body continuously. It is a one part enlarged plan view of FIG. It is a perspective view of the single envelope body of FIG. It is sectional drawing which follows the 17-17 line | wire of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Machine body 2 Guide plate 2 Upper mold body 3 Lower mold body 4 Perforation forming blade with heater 5 Groove hole 6 Bag body drawing roller 7 Roller for separation from perforation of case body 8 Cylinder for vertical movement of lower mold body 9 Envelope Body paper supply sensor
10 Display
11 Cutter
12 Guide plate
13 Motor
14 Pinion
15 racks
16 motor
17 Cutter

Claims (5)

Corrugated stepped portions are provided on the inner surfaces facing each other, and the upper base paper (P) and lower base paper (P ') made of single-sided corrugated cardboard pre-coated with heating adhesive (D) or pressure adhesive (D') Double-sided tape (T) with release paper was glued to the edges (P ₁ ), (P ₁ ′), (P ₂ ), (P ₂ ′), the bottom edges (P ₄ ), (P ₄ ′) and the inner surface An envelope characterized by heat-bonding or pressure-bonding the opening flap (P ₃ ′). A single base paper (P ') made of single-sided corrugated cardboard with pre-applied heating adhesive (D) or pressure adhesive (D') on the inner surface facing the width ( W + W ₁ ) Shift the flap length (Wn) from the center, fold it in half, and fold the left and right edges (P ₁ ) and (P ₁ ′) of the upper base paper (P) and lower base paper (P ′)・ Flap (P ₃ ′) with (P ₄ ) ・ (P ₄ ′) and double-sided tape (T 3) with release paper on the inner surface is heat-bonded or pressure-bonded, and the excess edge of the opening flaps (P An envelope characterized by ₃ ′). Insert the upper base paper (P) and the lower base paper (P ') made of single-sided corrugated cardboard pre-coated with heating adhesive (D) or pressure adhesive (D') on the surface of the corrugated step located on the opposite inner surface Therefore, the upper mold body (2) and the lower mold body with heater (3), which always maintain the set interval (S), are arranged so that they can move up and down relative to each other, on the side of the base of the upper mold body (2). An adhesive pressing die and perforation forming cutter (4) are provided so that they can be moved up and down separately from the upper die, and the upper and lower base papers (P) and (P ') are placed in rolls (Pr) and (Pr' ), And the width (W ₁ ) of one base paper (P) of the base paper (F) is the flap width for closing the opening (a) from the width (W) of the other base paper (P ′) ( Wn) is shortened by an amount corresponding to Wn), and a double-sided adhesive tape (T) with release paper is attached along the edge of the flap, and the upper and lower base papers (P) and (P ′) are attached to the sensor (9). Rotation of the case body drawer roller by detection Set the horizontal (L) of the envelope body to perform the start or stop of the drawer by the 'bottom side edge of the (P ₂₎ · (P ₂ vertical sheet (P) · (P)' ) and the opening A pull-out roller (6) that feeds forward while sandwiching and pressing the flap (P ₃ ') with double-sided adhesive tape with release paper on the side is provided, and is held between the pull-out rollers (6) in front of the envelope pull-out roller An envelope having a separation roller (7) that cuts off a continuous envelope body in a cut-off state with a perforation (B) formed in the middle of a joint portion (E) connecting the envelope body (A). Manufacturing equipment. A single-sided cardboard base paper (P ') with pre-applied heating adhesive (D) or pressure adhesive (D') on the surface of the corrugated stepped portion is pivoted as a roll body (Pr '), and the roll body Set the width (W ₁ ) of one side (W ₁ ) of the base paper (P ′) unrolled from the other side (W) shorter than the width (W ₃ ) to be the flap (P ₃ ′) While folding, make the corrugated step face each other to make double upper and lower base papers (P) and (P '), and apply double-sided adhesive tape (T) with release paper along the inner surface of the flap (P ₃ ') The upper and lower base papers (P) and (P ') are set to the envelope length (L ₁ L ₂ …… Ln) according to the set feed amount, and the drawer is started or stopped. Rear edge (P ₄ ), (P ₄ ′) and opening, except for the front edge (P ₁ ), (P ₁ ′), which has been bonded, by the mold (2) and the lower mold body (3) with heater Envelope body (P ₃ ′) An envelope manufacturing apparatus characterized in that after forming A), the envelope is sent forward, and the joint (E) between adjacent continuous envelopes is cut with a cutter (11) to form a single envelope (A).   The envelope manufacturing apparatus according to claim 3 or 4, further comprising a mechanism (10) for sticking or printing and displaying a product display / address / other display on the outer surface of the upper base paper (P).