JPS6366063A - Tape sticker - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to an apparatus for applying tape, and more particularly to an apparatus for applying tape, and more particularly to an apparatus for applying tape to a case from a tape supply roll as the case is fed forward to be taped and sealed. On the other hand, tape application, in which tapes, especially pressure-sensitive adhesive tapes, are applied involves equipment.

Prior Art The taping apparatus of the present invention is disclosed in, for example, U.S. Pat.
The tape application described in No. 54,550 and No. 4,039.367 belongs to the same technical field as the device, and in certain aspects, the tape application described in No. 54,550 and No. 4,039. The tape application described in Japanese Patent Application No. 153228/1987 includes improvements to the device.

The taping apparatus described in the above-mentioned patent application comprises a lid comprising two flaps that are folded so that the edges are adjacent to each other, a length of pressure-sensitive adhesive tape that has been unwound and cut from a supply roll. In this case, the tape is fed forward, and the front end of the case engages with the adhesive surface of the tape, and the tape is pressed against the case. Unwound from the roll, the tape is adhered to the edge of the flap along adjacent edges, thereby sealing the case.

In the above-mentioned tape application, the device presses the tape including the folded part against the front edge of the case as the case moves forward, and then a first roller presses the tape against the flap, and It includes a knife that cuts the tape long enough to extend over the edge and a second roller that presses the tape onto the rear edge of the case.

Although the above-mentioned tape pasting device generally works well, it is sometimes difficult to cut the tape to the same length, which makes it difficult to form ears of appropriate length after cutting. Importantly, a sufficient length of tape must extend downwardly in front of the first suppression roller. In other words, it is important that the position of the cut end of the tape be the same each time the tape is cut, and therefore it is important that the length of tape that is cut in each operation be the same.

Prior to the improvements of the present invention, tape application depended on the length of the tape cut by the machine's knife, the diameter of the supply roll at the time of cutting, the delay in unwinding the tape from the supply roll, and the fact that the tape was a pressure-sensitive adhesive tape. may be affected by factors such as the amount of pull required to unwind the tape from the roll (note that each turn of tape adheres to the turn radially inward of it). being observed. It is possible to some extent to make the cutting length of the tape the same by adjusting the resistance to rotation of the supply roll, but given the gradual decrease in the diameter of the supply roll, the above-mentioned Adjustments such as Adjustments as described above need to be made each time.

It is also generally undesirable that tape application requires adjustments to the equipment by the operator during roll unwinding or after each roll.

SUMMARY OF THE INVENTION The present invention was developed mainly as an improvement to the tape pasting device described in the above-mentioned patent application. It should be noted that taping of an integral structure that does not include a structure is also applicable to the device.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a tape application apparatus of the type described above which effectively and simply makes the position of the cut end of the tape the same after each cut of the tape without requiring any adjustment by the operator. be.

Generally, the tape applicator of the present invention functions to apply a length of tape supplied from a supply roll to a case that is fed forward along a predetermined path, and holds the supply roll. means, and the front end of the tape extending from the roll is pressed by the front end of the case that is fed forward to adhere the tape to the case, and when the case is fed forward, the tape is pushed away from the roll. a first pressing device that pulls out and presses the tape against the case; and a first pressing device that is provided downstream of the first pressing device and presses the tape against the case after the rear end of the case passes the first pressing device. and a second pressing device to complete the process. After the rear end of the case passes the first pressing device, the tape extends downstream from the first pressing device (the area up to the retainer case (reach)).
extends to

A knife is provided which cuts the tape in said area and thereby cuts said length of tape applied to the case from the tape supplied by the roll. The knife is mounted so as to be movable between a retracted position allowing passage of the case and an advanced position cutting the tape in the area so that the tape in the area is cut when the rear end of the case passes the knife. It is movable from its retracted position to its advanced position to cut. The tape extends along a path from the supply roll to the first restraining means and around the first pressing device to said region in order to adhere its front end to the case. A drag applying device is provided between the supply roll and the first pressing device to apply tension to the tape as it is pulled forward along its path; In between, when the tape is pulled forward by the case with the knife in its retracted position, tension is applied to the tape between the supply roll and the drag-applying device, causing the knife to move from its retracted position to its advanced position. A device is provided to release the tension applied to the tape between the supply roll and the drag device when the tape is cut.

The invention will now be described in detail by way of example embodiments with reference to the accompanying drawings.

In the accompanying drawings of the embodiment, a case (cardboard box) made of paperboard or the like, for example, corrugated paper, is shown as a whole at 1.

This case has a top part 3, a bottom part 5, both side walls 7, and both end walls 9.
exists. The top 3 is constructed by folding two end flaps, indicated at 11, from the top of the end wall 9 over the product filled in the case as shown, and then placing the top of the side wall 7 of the case over the end flaps. The conventional procedure of folding the two side flaps together, indicated at 13, allows them to be covered by a lid formed when the case has been packed. The side flaps 13 have mutually parallel adjacent edges indicated at 15 which, when fully folded, are substantially coplanar and brought into substantially abutting or proximate relationship with each other. are doing. The flaps 13 are secured together along their edges 15 by tapes 17. This tape has a pressure-sensitive adhesive on one side A, and is adapted to be adhered to the flap 13 along the edge 15 with this pressure-sensitive adhesive. It is used for tape assembly. This tape extends the entire length of the top surface 3 of the case and also extends a distance downwardly along the outside of the end wall 9 of the case. The portion covering the bottom wall 5 also includes end flaps and side flaps, similar to the lid portion covering the top, and is formed by securing these flaps with tape in a similar manner.

In order to facilitate unpacking of the case, the tape is provided at least at one end thereof, i.e. at the lower end of the portion 19 extending downwards from the top end, in a direction transverse to the tape along line 23. An integral end portion 21 is formed so as to be overlapped. Because the tape is folded over in this area with the adhesive layer on the inside, this end 21 does not adhere to the side wall of the case, and when the tape is peeled off, the edge of the tape is It is provided with non-adhesive ears 25 to facilitate gripping.

The ear part 25 for facilitating the pulling of this tape is
As shown in FIG. 7, it is formed during the operation of pasting the tape on the case. As shown in FIG. 7, basically a continuous length of tape T having adhesive on one side A is connected to its source i.e. tape roll 2.
7, and is affixed to the case 1 as it is being fed forward, ie, to the left as viewed in FIG. 7, along a horizontal path by the case conveyor 29. The tape is first applied with its adhesive side to the part of the end wall 9 on the front side in the direction of travel and then onto the flap 13 along the edge 15 thereof. This continuous length of tape is cut to the required length, including the ends 19 extending downwardly along both end walls 9 of the case. Before the tape is applied to the case, the tape is formed with an integral end 21 by folding. This end is folded over with the adhesive side on the inside to form an ear 25. The tape T is drawn downward from the tape roll 27 until its lower end reaches into the forward feeding path for the case 1 by the conveyor 29. At this time, the adhesive side A of the tape faces the front end wall 9 of the advancing case.

The conveyor 29, indicated generally at 31, serves to convey the case 1 downwardly from the head. For this tape application, the tape application head is installed at a position along the longitudinal direction of the conveyor by a suitable fixing means, and the pressure sensitive adhesive tape sent out from the tape roll 27 is sent by the conveyor passing below the head. This function is to attach it to the case where it is used. For this tape application, the head has a frame body including a pair of side plates 33. In this tape application, the head has a first tape pressing means including a roller 35, and this roller 35 presses the tape against the front end wall when viewed in the direction of movement of the case 1.
Further advancement of the case then acts to press the tape over its entire length onto the top wall 3 of the case. 37
The knife shown in is the knife used to cut the tape.

For tape application, the head further includes a second tape suppression means including a roller 39 which presses the tape against its top wall over the entire length of the case, and the tape is then cut by the knife. After that, the tape is pressed against the rear end wall 9 when viewed in the direction of movement of the case.

Between the side plates 33 is a swing lever 41 consisting of two lever plates 47 pivotally mounted on a horizontal horizontal axis 43.
is provided, and the roller 35 constitutes the lower end of this swing lever. The roller 35 is adapted to rotate freely around a pin 45 mounted horizontally between the lower ends of the lever plate 47. Another swinging lever 49 is provided between the side plates 33 and is made up of two lever plates pivotally mounted on a horizontal axis 51, and a roller 39 is provided at the lower end of the swinging lever 49. is provided. roller 39
is pivoted to freely rotate on a pin 53 stretched horizontally between the lower end portions 55 of the two lever plates constituting the lever 49.

The levers 41 and 49 are connected to each other by a link 57 so that they can swing in relation to each other, and a spring 59 connected to the lever 49 causes the rollers 35 and 39 to become solid lines in FIG. is biased toward the lowered position shown in FIG. In this state, the rollers 35 and 39 are in a position that projects downward from the side plate 33 and are in a position that crosses the path of the cases 1 being sent on the conveyor. The first roller 35, together with the lever 41, can be flipped up in the clockwise direction from its lowered position as seen in FIG. That is, it is rotated counterclockwise to pull the roller 39 out of the passage of the case. When the lever 41.49 and roller 35.39 are swung upward, the spring 59
are pulled, exerting a biasing force on these levers tending to return them to the downward position. The tape T is drawn downward from the tape roll 27 passing around the guide roll 61 extending between the side plates 33, and then around the guide rolls 63 and 65 provided between the lever plates 47, so that the lower end thereof It is pulled out to the position shown at 67 in FIG.

As shown in the figure, the end portion 67 is located upstream of the first tape pressing roller 35 when viewed in the direction of movement of the case and extends downward and rearward therefrom, and is connected to the front end wall 9 of the case sent by the conveyor 29. It is located between the rollers 35.

The knife 37 is located between the side plates 33 and outside of the lever 41, and is carried by a lever 69 consisting of two lever plates pivotally connected to the shaft 43.

The lever 69 is biased by a spring 71 to the position shown by the solid line in FIG. By engaging with the lower end of 69, it can be flipped upward against the spring force of spring 71. When the lower end of the lever 69 is disengaged from the case, the lever 69 is forcefully swung back downward by the force of the spring 71, and the knife 37 cuts the tape at this time.

For tape application, the head 31 is provided with a device 73 for folding the lower end 67 of the tape into an integrated folded portion 21 to form an ear portion 25 there. As shown in FIG. 7, this device 73 includes a pocket forming member 75 constructed by shaping a plate member into a substantially J shape when viewed from the side thereof. This pocket forming member has a straight leg 77, a foot 79 curved to follow the surface of the roller 35, a relatively short web 81 extending outward from the foot, and an outer end thereof extending upwardly. It includes a lip portion 83 and a toe portion. This pocket-forming member 75 has a horizontal shaft 85 with its straight leg 77, and a lever 4 is attached to the lever 75 at a position above the roller 35.
It is supported for rocking movement between two lever plates 47 of 1, and is biased by a spring 87 to the position shown in solid lines in FIG. In this position, the leg 77
is engaged with the roller 53 on the downstream side of the roller 35 when viewed in the direction of movement of the case, and its curved foot portion 79 extends along the lower part of the roller 35, and the web portion 81 and the lip portion 8
3, a recess or pocket 89 is formed on the upstream side of the roller 39 and in front of the roller when viewed in the direction of movement of the case and opens upward. The back wall of this pocket is roller 35
The bottom wall and front wall of the pocket are provided by a web portion 81 and a lip portion 83, respectively. The lower end 67 of the tape T initially extends over the pocket in front of the roller 35, as shown in phantom lines in FIG. 7, and then extends into the pocket as shown in solid lines in the figure. folded into.

The tape folding device 73 for folding the tape end 67 into the pocket further includes a nozzle 91 for supplying a jet of air towards the tape end extending over the pocket 89;
The tape is folded into the pocket by air blowing from the nozzle, forming a fold. The bent portion at the end of the tape is a portion that is bent with the surface having the adhesive on the inside. The blowing of air from the nozzle 91 is controlled by a control valve 93, which is controlled by engagement of the upper ends of four levers with an actuator 95 of the control valve 93. This allows air from a compressed air source (not shown) to flow through valve 97 and conduit 99.
7 to the nozzle 91, and when the lever 49 reaches its return position shown in FIG. 7, the blowing air is ejected from the nozzle.

The tape attachment head 31 described above was applied in Japanese Patent Application No. 62-1532 filed by the same applicant as the present applicant.
BEM I 5TAPE, which is substantially the same as the head described in No. 28, except for the structure forming the ears, from Bemis Company, Inc., located in Minneapolis, Minnesota, USA, the applicant of the present application.
The case tape attachment sold under the product name R is almost the same as the machine head. According to the present invention, tape application is performed between the supply roll 27 and the first pressure roller 35 (more specifically, between the supply roll 27 and the guide roll 61).
The tape passes from the supply roll to the first pressure roller and around the first suppression roller until it reaches the region R of the tape (where the rear end of the case touches the first suppression roller). A drag applying device 101 is provided that applies tension to the tape when it is pulled forward by the case along the path from the first suppression roller to the area extending downstream from the first suppression roller to the case. Further, the tape application head is provided between the supply roll 27 and the drag applying device 101, and when the tape is pulled forward by the case, tension is applied to the tape between the supply roll and the drag applying device, When the knife 37 moves from its retracted position to its advanced position to cut the tape, it releases the tension applied to the tape between the supply roll and the drag device, thereby causing the knife to cut the tape in area R. A device is provided, generally indicated at 103, which effectively isolates the tape downstream of the drag device from the supply roll while the tape is being cut.

The drag applying device 101 includes a roller 105 that the tape detours around when the tape moves along the path between the supply roll 27 and the first suppression roller 35, and a roller 105 shown in FIG. 8 for braking the roller 105. and a braking system indicated generally at 107. This braking device has a shaft 10 attached to one side wall 33 of the head by a bolt 111 extending across the head from which the tape is attached.
9 and is rotatably mounted on the braking device 107.
includes a brake disc 113 pressed against a shoulder 119 provided at the inner end of the counterbore 121 of the roller 105 by a spring 115 acting from a nut 117 screwed into the molar end of the bolt 111. This disc 1
13 is held non-rotatable but axially engageable against shoulder 119 by a pin 123 extending from the bushing through the hole in the disc.

Roller 105 is adapted to provide a substantially constant drag force on the tape so that the tension in the tape downstream of the roller is substantially constant.

It applies tension to the tape between the supply roll 27 and the drag device roller, 1051 as the tape is pulled forward by the case, and also applies tension to the tape between the supply roll and roller 105 when the knife 37 is actuated. The device 103 for releasing the applied tension is the roller 105 seen in FIG.
A first guide roller 127 constituted by an idle guide roller carried by the head slightly above and to the right of
and an idle guide roller carried by an extension indicated by 132 of the knife lever 69 in a position displaced to the right in FIG. 7 from the plane P of the axis of the guide roller 127 and roller 105. and a second guide roller 129. The tape supplied from the supply roll 27 passes through the roller 127 on the way to the roller 61.
, around roller 129 carried on knife lever 69 , and around roller 105 of the drag applicator, thereby forming a loop 130 in the tape between the supply roll and roller 105 . The roller 129 is
As the knife 37 moves from its retracted position shown in phantom lines in FIG. 7 to its forward position shown in solid lines in FIG. A first position (indicated by imaginary lines in FIG. 7) spaced a distance D1 from the plane P leads to a second position (seventh) spaced a distance D2 smaller than the plane P. (shown in solid lines in the figure) with the lever 69 of the knife and return to the first position when the knife returns to its retracted position. The first position of the guide roller 129 may be referred to as the loop tension position of the roller, and the second position may be referred to as the loop release position.

The supply roll 27 is attached to one side wall 33 of the head.
It is mounted on a core 131 carried on a bushing 133 which is rotatably mounted on a more extending shaft 135. The braking device for the supply roll, in the illustrated embodiment, is actuated by a set screw 143 which is slidable in a hole 139 in the bushing 133 and is screwed into a threaded hole 145 in the core 131. It includes a brake plunger 147 made of, for example, nylon, whose inner end is biased into engagement with the shaft 135 by a spring 141 .

At the beginning of each tape application to case 1, rollers 35, 39 and knife 37 are in the lowered position shown in solid lines in FIG.

The tape T from the tape roll 27 is transferred from this to the roller 12.
around 7.129.105 and therefore the guide roll 61.6
3.65 and is pulled out, with its lower end positioned in front of the roller 35. The lower end portion 67 of the tape has its adhesive side A facing away from the roller 35 and toward the advancing side end wall 9 of the case being sent in the forward direction by the conveyor 29. The end of this tape is bent and fitted into the pocket 89 in the manner described above. Also, the roller 129 is the seventh
It is in the loop release position shown by the solid line in the figure.

The case 1 to which the tape is to be pasted is sent by the conveyor 29 in the forward direction toward the roller 35 from a position to the right of the roller 35 in the first tape press as seen in FIG. As the case advances, its front end wall 9 abuts the exposed end 21 of the tape and the upper end of the lip 83 of the pocket forming member 75 almost simultaneously, and as the case advances further, the pocket forming member 75 is forced into its pivot position. The lip portion 83 is rotated clockwise around the moving point 85 against the spring force of the spring 87, and as a result, the lip portion 83 is gradually removed from the end portion 21 bent upward of the lower end portion 67 of the tape. go. As the case advances further, the end wall 9 presses the upwardly bent end 21 of the tape against the base of the tape adjacent thereto, and the tape adheres to the adhesive markings provided on their mutually joining surfaces. , are bonded to each other, and ears 25 are formed at the ends of the tape, which do not have adhesive properties to the outside.

As the case 1 moves further forward, the end wall 9 on the advancing side of the case abuts against the adhesive surface extending above the bent end 21 of the tape, and the tape portion is moved behind by the roller 35. By being pressed down, the tape is strongly pressed against the front end surface of the case and is reliably adhered thereto.

As the case moves forward, the lever 41 carrying the roller 35 rotates clockwise against the biasing force exerted by the spring 59 and flips up, allowing the roller 35 to ride over the upper end of the front end wall of the case and reach the top of the case. Reach the wall and then press the tape onto the flap 13.

In response to the lever 41 supporting the roller 35 being flipped upward, the lever 49 supporting the roller 39 resists the biasing force of the spring 59 via the link 57 and moves to the imaginary line in FIG. The roller 39 is rotated counterclockwise to the raised position shown in FIG. When the front end wall 9 of the case moves past the rollers 35, the case moves to the lever 69 carrying the knife 37.
The lower end of the lever is engaged with the upper surface of the case, and the lever is pushed up against the biasing force exerted by the spring 71 to the raised position shown in phantom lines in FIG. the lever is held in its raised position as long as the lever is in its raised position. This moves roller 129 to the loop tension position shown in phantom in FIG. 7, thereby tensioning the tape between supply roll 27 and drag device roller 105.

When the case passes the lower end of the lever 69, the lever 61
is rapidly swung downward by the action of the spring 71, and the knife 37 carried thereby cuts a predetermined length of strip 17 of the tape from the remaining continuous tape, and the rear end of this cut tape. The part becomes the part 19 that is pasted on the rear end wall of the case. When the lever 69 swings downward, the roller 129 moves to the loop release position shown in solid lines in FIG. Release the tension that was being held.

The rollers 35 and 39 are arranged so that the rear end wall 9 of the case is connected to the roller 3.
It is held in the raised position until it passes through 9. When the case passes the roller 39, the lever 49 is moved by the spring 5.
It rotates clockwise under the urging force of 9 and swings back downward, pressing the rear end of the cut tape piece 17 onto the rear end wall of the case. As lever 49 swings back down, lever 41 also swings back down, returning roller 35 to its normal position shown in solid lines in FIG.

When the case 1 moves forward with the tape T attached, the tape T is pulled out from the tape roll 27 that is its supply source, and just before the case passes the lower end of the lever 69, the tape is pulled out. This includes a short horizontal distance extending from the lower end of roller 35 to the rear end of the case and over the top of the case. By engaging the lip portion 83 with this horizontal portion, the pocket forming member 75
is held in a retreated position relative to the roller 35 against the biasing force of the spring 87. When the tape is cut and lever 41 and roller 35 return to their return positions, pocket forming member 75 is returned to its pocket forming position, shown in solid lines in FIG. This results in the lower end 67 extending over the pocket 89 as shown in phantom in FIG. At the end of this return, lever 49 actuates valve 93 and the air jet is directed to nozzle 91.
The tape end is then folded into the pocket 89 to form a fold, thus preparing the tape for the next case.

Supply roll 2 each time the tape is cut by the knife.
Since the tension applied to the tape between 7 and the roller 105 of the drag applying device is released, the tension applied to the tape between the roller 105 of the drag applying device and the case is almost constant every time it is cut. and is determined at the time of cutting the tape by the drag force (which is substantially constant) applied to the tape by the rollers of the drag applicator as the tape is pulled forward by the case. Loop 130 when cutting the tape
By releasing the tape, the tape downstream of the roller 105 of the pile force applying device is effectively isolated from the supply roll 27 during tape cutting. Therefore, the tension at the part of the tape to be cut is largely unaffected by the diameter of the supply roll at the time of cutting, the braking force of the supply roll, and the tensile force required to unwind the tape from the supply roll; The position of the end of the tape after being cut is the same for each cut, and the cut length of the tape in each cycle is the same. This is because each cut of the tape is made under substantially the same conditions.

Although the present invention has been described in detail with respect to its preferred embodiments above, the present invention is not limited to these embodiments, and various modifications can be made within the scope of the present invention. This will be clear to those skilled in the art.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a case to which a tape is attached for easy unpacking according to the present invention. FIG. 2 is a side view of the case shown in FIG. 1. FIG. 3 is an end view of the case shown in FIG. 1, viewed from the left side of FIG. 2; FIG. 4 is a top view of the case shown in FIG.
FIG. 3 is a partially cutaway view of the tape. FIG. 5 is a somewhat enlarged view of the cross section of the case taken along line 5--5 in FIG. 4. FIG. 6 is a somewhat enlarged view of the cross section of the case taken along line 6--6 in FIG. 4. FIG. 7 is a vertical cross-sectional view of the tape application head incorporated in the apparatus of the present invention. FIG. 8 is a cross-sectional view of the tape application head along line 8--8 of FIG. DESCRIPTION OF SYMBOLS 1... Case, 3... Top wall of case, 5... Bottom wall of case, 7... Side wall of case, 9... End wall of case, 11... End flap, 13 ... Side flap, 15... Flap edge, 17... Tape, 19
．． 21... End of tape, 23.23a... Bending line, 25.25a... Ear portion, 27... Tape roll (supply roll). 29... Conveyor, 31... Tape pasting head,
33...Measurement, 35...Roller, 37...Knife, 39...Roller, 41...t<-, 43...
Axis, 45...pin. 47...Lever plate, 49...Lever, 57...Link. 59... Spring, 61.63.65... Guide roll,
67... Lower end of tape, 69... Lever, 71...
・Spring. 73... Tape folding device, 75... Pocket forming member, 77... Leg portion, 79... Foot portion, 81... Web portion. 83... Lip portion, 85... Pivot, 87... Spring, 89... Pocket, 91... Nozzle, 93...
control valve, 95...actuator, 97...valve, 9
9... Conduit, 101... Drag applying device, 103...
- Tension applying device, 105... Roller, 107... Braking device, 109... Shaft, 11... Bolt, 113...
...Brake disc, 115...Spring, 117...Nut, 119...Shoulder, 121...Counterbore,
123... Bin, 127... First guide roller, 1
29...Second guide roller, 130...Loop, 1
31... Core, 132... Extension part, 133... Bushing, 135... Shaft, 139... Hole, 141...
... Spring, 143 ... Setting screw, 145 ... Screw hole, 147 ... Blunger

Claims (2)

[Claims] (1) A tape pasting device for pasting a certain length of tape supplied from a supply roll onto a case being fed forward along a predetermined route, a means for holding the supply roll; The front end of the tape extending from the supply roll is pressed by the front end of the case in order to adhere the tape to the case being fed, and when the case is fed forward, the tape is a first pressing device that presses the tape against the case by pulling it out from the supply roll; and a first pressing device that is disposed downstream of the first pressing device, and a rear end of the case passes through the first pressing device. a second pressing device that later completes pressing the tape against the case; and the tape is downstream of the first pressing device after the rear end of the case passes the first pressing device. the length extends laterally in a region up to the case; and the length is configured to cut the tape in the region and is pasted onto the case from the tape supplied from the supply roll. a knife for cutting the tape in the case; means for mounting the knife for movement between a retracted position allowing passage of the case and an advanced position cutting the tape in the area; the tape is configured to be movable from the retracted position to the advanced position to cut the tape in the region as the trailing end passes the knife; the tape extending along a path from the supply roll to the first pressing device and around the first pressing device to the region; an applicator applies a drag force to the tape between the supply roll and the first pusher, thereby imparting a drag force to the tape as it is pulled forward along the path by the case; a device provided between the supply roll and the drag applying device;
applying tension to the tape between the supply roll and the drag applying device when the tape is pulled forward by the case with the knife in its retracted position;
a device for releasing the tension applied to the tape between the supply roll and the drag applying device when the knife moves from its retracted position to its advanced position to cut the tape; Tape pasting device. (2) having a top, a bottom, sides, and ends, the top being configured to apply the tape to a case including two flaps that are folded so that the edges are adjacent to each other; a tape applicator having an adhesive on a surface and configured to be supplied from a supply roll to a case as the case is fed forward in an end direction along a predetermined path; holding means, configured such that a front end of the tape extending from the supply roll is pressed by the front end of the case in order to adhere the tape to the case being fed forward; a first pressing device that pulls out the tape from the supply roll and presses the tape against the case when the tape is pressed; and an integral end portion of the tape provided corresponding to the first pressing device; is folded over the face of the tape and the end is adhered to the tape, thereby providing an ear for grasping and pulling to peel the tape from the case without adhering to the front end of the case. a second pressing device disposed downstream of the first pressing device, which completes pressing the tape against the case after the rear end of the case passes the first pressing device; a pressing device; and the tape extends in a region downstream from the first pressing device to the case after the rear end of the case passes the first pressing device. a knife configured to cut the tape in the area and cut the length of tape that is applied to the case from the tape supplied from the supply roll; and a retracted position that allows the case to pass through. means for mounting said knife for movement between an advanced position and an advanced position for cutting said tape in said area; said knife cutting said tape in said area as said rear end of said case passes said knife; The tape is configured to be movable from the retracted position to the forward position, and the tape is moved from the supply roll to the first pressing device so that the front end of the tape is adhered to the case. and extending along a path passing around the first pressing device to the area, and the tape applying device is arranged between the supply roll and the first pressing device. a drag applying device that applies a drag force to the tape so that the tape is tensioned when the tape is pulled forward along the path by a case; the supply roll and the drag applying device; established between
applying tension to the tape between the supply roll and the drag applying device when the tape is pulled forward by the case with the knife in its retracted position;
a device for releasing the tension applied to the tape between the supply roll and the drag applying device when the knife moves from its retracted position to its advanced position to cut the tape; Tape pasting device.