JP2922413B2 - Packaging, packaging method and packaging device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a package in which the opening property of a shrink package is improved, and more particularly, to an opening knob provided at an edge of the shrink package as opening means, a perforation, and the like. The present invention relates to a shrink wrapping body provided with a discontinuous cut line, and a wrapping method for obtaining the wrapping body and a device therefor.

[0002]

2. Description of the Related Art Conventionally, a package having a cut line 5 such as a perforation on an opening knob 6 formed on an edge portion of a shrink package 1 of this kind and a manufacturing apparatus therefor include: For example, there is one disclosed in Japanese Utility Model Laid-Open No. 5-35751,
As shown in FIGS. 16 to 20, the technical content disclosed in this publication is such that the shrink wrapping body 1 covers a tray T containing articles with a heat-shrinkable film F in the form of a tube. Of the film F along the top seal portion 2 between one of the top seal portions 2 and the upper opening edge 4 of the tray T.
A perforation line 5 is formed on the upper surface, and the end of the film F is extended from the top seal portion 2 on the side where the perforation line 5 is formed by a margin 6, and the film F is thermally shrunk by shrinking. As shown in FIG. 18, the manufacturing apparatus 10 covers a tray T in which a tubular heat-shrinkable film F is accommodated at predetermined intervals and holds the objects to be packaged. Are conveyed while being pinched by the conveyors 11 and 12.
A seal / cut portion 13 is provided at the outlet side of the first and the second.

As shown in FIG. 19, a seal 15 is provided on upper and lower rotating shafts 14a and 14b.
a, 15b are attached, and both holders 15a, 15b
A mating surface is formed on the front end side of b, and a sealing surface 16a for sealing the bottom seal portion 3 is provided on the rotation front edge of the meshing surface of one of the holders 15a, and on the rotation rear edge. Is a sealing surface 16 for sealing the top seal portion 2.
b is formed, and a cutter 17a and a cutter receiver 17b are provided at positions close to the sealing surface 16a. A saw blade-shaped cutting line knife 18 for applying the cutting line 5 is attached to a side piece at the rear of the holder 17a. The holders 15a, 15 thus provided
20b is tuned and rotated, and the engagement surfaces between the trays T1 and T2 are engaged with each other as shown in FIG. 20, so that the rear side of the front tray T1 forms the bottom seal portion 3 by the sealing surface 16a. At the same time, a cut 19 is made by the cutter 17a, and a top seal portion 2 is formed on the rear tray T2 side by a sealing surface 16b, and at the same time, the top seal portion 2 and the upper opening edge 4 of the tray T2 are formed.
A cutting line 5 is formed by a cutting line knife 18 along the top seal portion 2 between the film F and the film F, and a notch 6 having a predetermined length from the top seal portion 2 is formed between the sealing surfaces 16a and 16b. Is done. Thereafter, the shrink wrapping body 1 in which the tray T is wrapped is formed by successively sealing and cutting, and the shrink wrapping body 1 shrinks and wraps the tray 1 in a subsequent shrinking step.

[0004]

However, the shrink wrapper 1 in which the tray T is wrapped in this way can be removed from the wrapping body 1 by pulling the knob 6 when the tray T is taken out. Is torn open on the side of the knob allowance 6, but only a part is opened, and the whole tray T is in a wrapped state, which makes it difficult to take out the tray T. In addition, there is a problem that the film F to be taken out cannot be taken out unless the film F covered is further torn from the opened portion.

The present invention has been made in order to solve the above-mentioned conventional problems, and utilizes a knob formed on a shrink wrapping body in which an object to be wrapped, such as a container storing articles, is wrapped with a shrinkable film. It is an object of the present invention to provide a shrink package, a package method and a device thereof, which can be easily opened by tearing the package at a stretch by tearing.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned technical problems, the present invention is directed to a package in which the entire surface of an object to be packaged is covered with a shrink film. A center seal is provided on one side surface of the packaged object, and a horizontal seal is provided on both end surfaces of the packaged product in a direction intersecting the center seal, and a film extension is provided on at least one of the horizontal seals. The transverse seal provided with the film extension portion is provided with a discontinuous transverse cut line substantially parallel to the transverse seal except for the center seal portion except for the center seal portion. A package having discontinuous vertical cut lines intersecting with the horizontal cut lines at positions spaced apart from each other by a dimension. The invention according to claim 2 draws out a band-like film from a film roll of a shrink film. Film In the process of being drawn out into a cylindrical film, the band-shaped film is formed into a cylindrical shape, and both ends are overlapped to provide a center seal, and the center seal is provided along a longitudinal direction corresponding to a position separated by a predetermined dimension from the center seal. Forming a discontinuous vertical score line to form a band-like film into a tubular film, and in the process of forming this tubular film, supplying articles to be packaged at predetermined intervals into the same tubular film. Sealing and cutting the tubular film in the horizontal direction before and after the packaged object, and at the time of this horizontal sealing, providing a film extending portion extending from one of the horizontal seals, and inward from the position of the horizontal seal portion A discontinuous horizontal cut line is formed substantially in parallel with the horizontal seal crossing the discontinuous vertical cut line over substantially the entire width of the cylindrical film excluding the center seal portion . It is a packaging method and claims According to the invention, a strip-shaped shrink film is pulled out from a film roll, both end edges of the strip-shaped film are overlapped, the overlapped portion is sealed and formed into a tubular film, and an article to be packaged is placed in the tubular film. In a shrink wrapping apparatus provided with a pair of horizontal seal members for supplying and horizontally sealing a cylindrical film before and after the article to be packaged, a band-like film drawn from a film roll is formed into a cylindrical film. A means for forming a vertical cut line discontinuous in the feeding direction of the band-shaped film is provided so as to be position-adjustable in the band-shaped width direction during the feeding of the band-shaped film up to one of the pair of horizontal sealing members. A first sealing ridge provided at a position adjacent to the cutter for cutting the strip film and a first sealing ridge provided at a position adjacent to the cutter; A second seal ridge disposed at a predetermined distance away from the second seal ridge, and a cylindrical film at a position separated from the second seal ridge by a distance from the disposition position of the cutting cutter. A cut line forming cutter for providing a discontinuous horizontal cut line in a position excluding the center seal portion in the horizontal direction is provided, and the other horizontal seal member is provided at a position where the cutting cutter of the one horizontal seal member is disposed. A shrink packaging apparatus having a configuration in which a cutter receiver is provided correspondingly, and a seal ridge is similarly provided at a position corresponding to each of the first seal ridge and the second seal ridge.

[0007]

With the above construction, the package is opened by applying a tearing force along the horizontal seal, thereby opening the cylindrical width direction along the discontinuous cut line in the horizontal direction excluding the center seal portion. While being further opened in a substantially T-shaped tear shape along a vertical cut line along the center seal crossed by the horizontal discontinuous cut line, and Extraction becomes easy.

[0008]

FIG. 1 is a schematic perspective view of a shrink wrapping apparatus 21 according to an embodiment of the present invention.
FIG. 2 is a front view of the film supply unit 24 and the vertical cutting line device 30, FIG. 3 is a plan view of the vertical cutting line device 30, and FIG. 4 is a perspective view of the vertical cutting line device 30. As shown in FIG. 1, the shrink wrapping apparatus 21 is a supply conveyor section 22 for supplying a container W containing articles to be packaged, for example, articles, to a bag making apparatus 101, and a strip film F disposed on the upper side of the bag making apparatus 101. Feeder 24 for feeding and feeding the paper to the bag making apparatus 101 and the feed roller 2 of the film feeder 24
6, a center seal portion 102 and a seal / cutting device 10 are provided downstream of the bag making device 101.
5 and are arranged.

A plurality of attachments 23 are attached to the supply conveyor 22 so that the attachment intervals can be changed, and supply the containers W containing the articles to be packaged to the bag making apparatus 101. Further, as shown in FIG. 2, a film supply section 24 provided on the upper side of the bag making apparatus 101 has, for example,
Rolls FA and F of the heat-shrinkable strip film F
B is supported by a mounting portion 26 which is mounted so as to be able to be fed out, and is provided so as to be continuously supplied.
8a, 28b and a plurality of guide rollers 29a to 29f.
Is supplied to the bag making apparatus 101 side. Further, a vertical cutting line device 30 is disposed between the guide rollers 29b and 29c of the feeding roller portion 27.

As shown in FIGS. 2, 3 and 4, this vertical cutting line device 30 is provided at a predetermined position in the width direction of the strip-shaped film F fed and supplied and has a discontinuous vertical cutting line along its longitudinal direction. A first guide bar 31 and a second guide bar 32 are suspended between the machine frames 25 at predetermined intervals, and the first guide bar 31 is provided below the first guide bar 31. A main adjustment screw rod 33 is rotatably juxtaposed through a holder member 31a attached to the bar 31 at a predetermined interval, and is also provided below the second guide bar 32 at a predetermined interval below the second guide bar 32. A slave adjusting screw rod 34 is rotatably juxtaposed via the attached holder member 32a, and sprockets 35a, 35b are attached to corresponding end portions of the master and slave adjusting screw rods 33, 34, so that both sprockets 35 are provided.
A chain 36 is mounted between a and 35b. The cutter drive shaft 40 and the roller support shaft 71 are arranged in parallel at a predetermined interval between the first guide bar 31 and the second guide bar 32 provided as described above.

The cutter drive shaft 40 is rotatably supported at a predetermined position of the machine frame 25, and has a gear 41 at one end thereof.
The gear 41 is a sprocket gear 43 formed integrally with a sprocket 43a rotatably mounted on an intermediate shaft 42 mounted at a predetermined position close to the drive shaft 40 of the machine frame 25 and a gear 43b. The sprocket 43a is meshed and connected with the gear 43b, and the sprocket 43a is connected via a chain 45 to a sprocket 44 attached to the end of a shaft 28c of the feed roller 28a, so that the cutter drive shaft 40 is connected to the feed rollers 28a and 28b in series. It is provided to be rotated. A cutter holder 46 is slidably attached to the cutter drive shaft 40 that is connected and driven in this manner.

Although not shown, spline processing or a slide key is attached to the drive shaft 40 to make the cutter holder 46 slidable. The cutter holder 46 has a slide cylinder 47 and a shifter member 50 as shown in FIG. , A cutter retainer 56, a lock nut 62 and a cutter 58. This slide cylinder 4
Reference numeral 7 denotes a screw portion 48 for screwing the shifter member 50 and a cutter mounting portion 49 integrally formed via a groove 47a, and the screw portion 48 and the mounting portion 49 are formed to have substantially the same diameter.
Further, the shifter member 50 is provided with the screw portion 4 of the slide cylinder 47.
8 has a female threaded portion 51 screwed into it, and a flange portion 52 is formed at one end side. The flange portion 52 has a mounting screw hole on a predetermined radius line having a 1/4 equiangular angle around the axis. A screw 53 is provided, and a step 54 for fitting a bearing 55 is formed at an end opposite to the flange 52. The cutter retainer 56 is slidable on the drive shaft 40 and is formed in a ring shape having substantially the same diameter as the flange portion 52 of the shifter member 50. The cutter retainer 56 has a mounting screw hole 53 screwed into the flange portion 52. A matching bolt receiving hole 57 is formed. Further, as shown in FIG. 6, the cutter 58 has a cutting blade 59 for applying a discontinuous cutting line C1 to the belt-shaped film F at a predetermined thickness, a predetermined diameter, and an outer periphery at a predetermined thickness, and a center portion at the center. Cutter mounting part 4 of slide cylinder 47
9, the cutter 58 is diametrically divided into two parts 58a and 58a for easy attachment and detachment.
The cutters 58a and 58b are formed with parallel elongated holes 61a and 61b that are aligned with the mounting screw holes 53 of the flange portion 52 and cross the divided surface vertically.

A shifter member 50 is screwed into the screw portion 48 of the slide cylinder 47 thus formed, and a bearing 5 is mounted on the step portion 54 of the shifter member 50.
5 is externally fitted, and a lock nut 62 is screwed onto the screw portion 48 to fix the inner ring of the bearing 55. A spacer 58 having a hole aligned with the mounting screw hole 53 and the cutter 58 are fitted into the cutter mounting portion 49, and a cutter retainer 56 abuts on the side of the spacer 63.
The mounting hole 61 and the bolt receiving hole 57 are aligned with the bolt 64.
And the cutter holder 46 is slidably inserted into the cutter drive shaft 40. The cutter holder 46 is moved by the cutter slider 65 mounted between the first guide bar 31 and the main adjustment screw rod 33. The movement is adjusted along 40.

The cutter slider 65 is moved along the first guide bar 31 via the main adjustment screw rod 33, and the main body 66 of the slider 65 is shown in FIGS.
As shown in FIG. 5, a substantially rectangular block body is formed, and a screw hole 67 for screwing with the main adjustment screw rod 33 is provided through a lower part in the center in the thickness direction. A guide recess 68 through which the guide bar 31 is slidably inserted.
In addition, a mounting step 69 for mounting a pair of left and right fork members 70 is formed in a concave shape on the left side surface of the guide concave portion 68 in the drawing. This fork member 70
The mounting piece 70a and the fork piece 70b are formed in a substantially L shape, and the tip side of the fork piece 70b is formed in an arc shape following the outer periphery of the shifter member 50 of the cutter holder 46, and forms a pair of left and right fork members 70a. Is a fork piece 70
The bearings 55 are mounted at intervals so that the bearings 55 can be fitted between them.

Further, a roller support shaft 71 provided in parallel with the cutter drive shaft 40 is provided with an elongated hole 8 described later formed in the machine frame 25.
The roller support shaft 71 has an eccentric shaft portion 72 formed in a predetermined range with respect to the axis thereof. A receiving roller member 73 is slidable on the eccentric shaft portion 72. Installed. This receiving roller member 73
Is a shifter member 74 as shown in FIGS. 3, 4 and 7.
The shifter member 74 is formed in a cylindrical body so as to be slidable on the eccentric shaft portion 72, and a flange portion 75 is formed at one end of the shifter member 74 at a predetermined interval. A fork groove 76 is formed, and a stepped portion 77 for externally fitting the bearing 78 is formed on the outer periphery on the other end side of the shifter member 74 so that the bearing 78 is fitted. A cylindrical roller member 79 having a diameter is externally fitted and is prevented from coming off by retaining rings 80a and 80b. The receiving roller member 73 thus formed is inserted through the eccentric shaft portion 72 of the roller support shaft 71, and the receiving roller member 73 is a roller slider 81 attached between the second guide bar 32 and the secondary adjustment screw rod 34. Thus, the movement is adjusted along the roller support shaft 71.

The roller slider 81 is moved along the second guide bar 32 via the slave screw 34. The main body 82 of the slider 81 is connected to the main body 66 of the cutter slider 65 as shown. It is formed in a symmetrical, substantially rectangular block body, and a screw hole 83 for screwing with the secondary adjustment screw rod 34 is formed through the lower part of the center in the thickness direction, and the second guide bar 32 is formed on the upper part thereof. A guide recess 84 is formed to be slidably inserted, and a mounting step 85 for mounting a fork member 86 is formed in a concave shape on the right side of the guide recess 84 in the drawing. In this fork member 86, the mounting piece 86a and the fork piece 86b are substantially L
The fork piece 86b is formed in an arc shape following the outer periphery of the shifter member 74 of the receiving roller member 73, and is provided so as to be fitted into the fork groove 76 between the flange portions 75.

The receiving roller member 73 thus formed
The roller member 79 is set at a predetermined position corresponding to the cutter 58 attached to the cutter holder 46, and the fork groove 76 of the receiving roller member 73 is
Fork 86 of roller slider 81 screwed to
b is inserted and linked. Thus, the cutter 5
The cutter holder 46 provided with the roller member 79 and the roller member 79 and the receiving roller member 73 are rotated left and right by an adjustment handle 38 attached to one end of the main adjustment screw rod 33, so that the main adjustment screw rod 33 and the slave adjustment screw rod are rotated. 34 is a sprocket 35a, 3
The cutter slider 65 and the roller slider 81, which are rotated via the chain 5b and the chain 36 and screwed to the adjusting screw rods 33 and 34, are correspondingly moved in the left-right direction and set.

The shaft portions 71a on both sides of the eccentric shaft portion 72 of the roller support shaft 71 are rotatably mounted in a long hole 87 formed through the machine frame 25 as shown in FIG. The elongated hole 87 has a predetermined length along a line a connecting the roller support shaft 71 and the center of the cutter drive shaft 40. A pin or bolt 88 for positioning is attached to a predetermined position on the side of the drive shaft 40 on a line a close to the one long hole 87. A handle 89 is attached to the end of the shaft portion 71a on the side corresponding to the positioning pin 88, and the handle boss 90 of the handle 89 is attached to the end face of the handle boss 90, as shown in FIG. A notch portion 91 is provided in the range, and a positioning surface 92 that contacts the positioning pin 88 is formed. With the handle 89 thus formed attached, the handle 89 is rotated clockwise as indicated by the arrow in the drawing to move the positioning surface 92 to the positioning pin 8.
8, the eccentric shaft 72 is rotated about the shaft 71a, and the outer periphery of the roller member 79 is brought into contact with the cutting blade 59 of the cutter 58 as shown in FIG. Is provided so that a discontinuous vertical cut line C1 can be provided in this state.
And the roller member 79 is provided so as to be separated from the cutter 58 by rotating the handle 87 in a counterclockwise direction so that the belt-like film F can be inserted therethrough. At the same time, the shaft portion 71a is positioned to the right of the elongated hole 87 in the figure by the urging force of a coil spring 98 described later.

A cylindrical shaft receiver 93 is fitted concentrically to the left and right shaft portions 71a of the roller support shaft 71, and the second guide bar 3 corresponding to the shaft receiver 93 is fitted.
As shown in FIG. 4, a spring receiving member 94 including a screw portion 95 and a head portion 96 is screwed into the screw 2, and a fitting hole is provided through the center of the screw portion 95. Has a head portion 97b abutting on the outer periphery of the shaft portion 97a and the shaft receiver 93.
The pressure member 97 is elastically attached via a coil spring 98 having a predetermined spring pressure. The spring receiving member 94, the coil spring 98, and the pressing member 9 provided in this manner are provided.
7, the roller support shaft 71 is urged toward one end of the elongated hole 87, and a spring receiving member 94 is provided in accordance with the cutting state of the longitudinal cutting line C1 into the strip film F by the cutter 58.
Is adjusted so as to advance and retreat.

The film supply unit 24 provided as described above
In this case, one of the film rolls FA and FB attached to the mounting portion 26 is pulled out and engaged with the guide rollers 29a and 29b, and the eccentric shaft portion 72 of the roller support shaft 71 is turned counterclockwise. The belt-like film F is inserted in a state where the distance between the roller member 79 and the cutter 58 is widened, and the belt-like film F is mounted on the guide rollers 29c and 29d, and further between the feeding rollers 28a and 28b. The belt-like film F is inserted into the guide rollers 29e and 29f and supplied to the bag making apparatus 101. In the process of supplying the belt-like film F, the container W is operated by operating the handle 38 of the vertical cutting line device 30. By moving and adjusting the cutter holder 46 and the receiving roller member 73 with respect to the width of the band-shaped film F according to the size and shape of the A vertical slit line C1 is continuous in a longitudinal direction at a position of a predetermined dimension from one edge f of the film F, that is, at a position where a seal margin for overlapping both edges f of the strip-shaped film F to form a tube is left. It is attached to.

This bag making apparatus 101 is a known one.
The band-shaped film F from the film supply unit 24 is gradually formed into a cylindrical shape while folding both end edges f of the band-shaped film F downward at the inlet side, and the band-shaped film F is formed below the outlet side of the bag making apparatus 101. A pair of right and left delivery rollers 103 of the center seal portion 102 are provided, and a belt-shaped film F is provided.
Is provided so as to grip the overlap margin (seal margin) of both end edges f and send out the belt-like film F in a tubular state.
In the bag making apparatus 101, a container W containing the articles to be packaged is wrapped in a tubular strip film F fed at a predetermined interval by a supply conveyor 22 disposed at a front portion thereof. On the downstream side of the delivery roller 102, a seal roller 104 with a built-in heater, which forms a pair with the center seal portion 102, is disposed. The belt-like film sandwiched between the delivery roller 102 by the seal roller 104 is provided. The center film fc is formed by continuous heating and welding while the both edges f of the film F are sandwiched and overlapped, and the band film F is formed into a cylindrical film Fs.
The container W is wrapped at a predetermined interval in the cylindrical film Fs. When the cylindrical film Fs is formed by the center seal fc in this manner, the vertical cut line C1 is provided at a position separated by a predetermined dimension t1 from the center seal fc. Downstream of the center seal portion 102, a seal and cut device 105 is provided.

As shown in FIG. 10, the sealing and cutting device 105 is adapted to set a predetermined position between the containers W in a continuous feeding direction of the cylindrical film Fs which is formed into a cylindrical shape and wraps the containers W at predetermined intervals. A rotary shaft 106 having detachably mounted upper and lower pairs of horizontal seal bars 107, 108 is disposed above and below the delivery path of the same cylindrical film Fs. The meshing surface is formed along the arc of the rotation locus,
The length in the left-right direction of 107, 108 is formed larger than the width of the cylindrical film Fs, and the meshing surface has a substantially symmetric cross-sectional shape as shown in FIG. A cutting cutter 109 and a cutter receiver 110 are provided on a line connecting the. In addition, the left side of the drawing near the cutting cutter 109 and the cutter receiver 110 has a first
Sealing ridges 111 and 112 are formed in opposition to each other. Further, on the right side of the drawing from the position of the cutting cutter 109 and the cutter receiver 110, the concaves 11 extend over a predetermined range along the arc shape of the meshing surface.
3a and 113b are formed, and the second seal ridge is formed at the right end thereof.
114,115 are formed. A cutting line forming cutter 116 having a saw-toothed cutting edge 117 is detachably attached to the horizontal seal bar 107 on the upper side in the figure at a predetermined angular position from a line connecting the center of the rotary shaft 106, As shown in FIG. 11, the cut line forming cutter 116 has a recessed portion 118 for the center seal fc at the center thereof, and the entire length thereof is formed larger than the width of the cylindrical film Fs. A receiving member 119 made of silicon rubber or the like is detachably provided in the longitudinal direction of the meshing surface of the horizontal seal bar 108 corresponding to the cut line forming cutter 116 so as to be detachably embedded. A cartridge heater 120, a thermistor 121, and a heat pipe 122 are buried at substantially symmetric positions in the longitudinal direction of the horizontal seal bars 107, 108 formed as described above. The cut line forming cutter 116 is exemplified by forming a relief recess 118 of the center seal fc at a central portion thereof with a predetermined length. For example, two short cut line forming cutters are formed of the center seal fc. It is good also as a structure attached at a clearance interval. Although not shown, a shrink tunnel is provided downstream of the seal and cut device 105.

The shrink wrapping apparatus 21 provided in this way is provided with the feed rollers 28a, 28 of the feed roller section 27.
By rotating b, the belt-like film F of the film roll Fa attached to the mounting portion 26 is guided by the guide rollers 29a to 29f and supplied to the bag making apparatus 101 side. In this feeding process, the cutter driving shaft 40 of the vertical cutting line device 30 arranged side by side on the
Is driven in connection with the feeding roller 28a, and passes between the horizontal seal bar 46 having the cutter 58 provided opposite to the cutter driving shaft 40 and the roller supporting shaft 71 arranged in parallel and the receiving roller member 73. The cutter 58 extends in the longitudinal direction of a predetermined dimension from one edge f of the strip-shaped film F to be cut.
More discrete vertical score line C1 is gradually continuously subjected to.

When the belt-like film F provided with the longitudinal slit lines C1 is supplied to the bag making apparatus 101, the belt-like film F is placed at both ends f of the belt-like film F at the entrance side.
Are folded downward in a superposed manner to form a progressively cylindrical shape, and below the outlet side of the bag-making apparatus 101, delivery rollers 103 forming a pair of right and left of a center seal portion 102 are disposed to form a belt-like film F. The film W is sent out in a state in which the band-shaped film F is formed into a tubular shape by gripping both end edges f of the container W. The container W containing the articles to be packaged is supplied to the bag making apparatus 101 by a supply conveyor 22 provided at the front part thereof. There fed at predetermined intervals, are encapsulated in a film F of the tubular. A center seal fc is applied by continuously heating and welding the both edges f of the band-shaped film F while overlapping and sandwiching the both ends f of the band-shaped film F by a seal roller 104 built in the heater downstream of the delivery roller 102, and the band-shaped film F is formed into a cylindrical film Fs. The container W is wrapped at a predetermined interval in the cylindrical film Fs.

When the cylindrical film Fs which wraps the container W at a predetermined interval by the bag making apparatus 101 and the center seal portion 102 is sent out, the cylindrical film Fs is sent to the container W by the sealing / cutting device 105. A predetermined position therebetween is sealed and cut. When the upper and lower rotating shafts 106 are rotated and the engaging surfaces of the horizontal seal bars 107 and 108 are engaged with each other, first, as shown in FIGS. As a result, a transverse score C2 is formed in the width direction of the cylindrical film Fs. In this case, since the relief recess 118 of the center seal fc is formed substantially at the center of the cut line forming cutter 116 ,
Except for the portion corresponding to the relief recess 118, a horizontal cut line C2 is provided substantially all around. Subsequently, the second ridges 114 and 115 are engaged with each other to form the second seal fh2.
9 and cutter receiver 110 and first seal ridges 111 and 112
And the cylindrical film Fs wrapping the preceding container W is cut S by the cutting cutter 109,
A first seal fh1 is applied to the leading end side of the next container W by the first seal ridges 111 and 112, and thereafter, the transverse cut line C2, the second seal fh2, the cutting, and the like are sequentially formed on the cylindrical film Fs between the containers W.
A package Fw in which the container W is wrapped with the first seal Fh1
Is separated and molded.

The package Fw thus cut and formed is
As shown in FIGS. 13 and 14, one end is sealed by a first seal fh1, the other end is sealed by a second seal fh2, and horizontal seal bars 107 and 108 are provided outside the second seal fh2. The recesses 113a and 113b formed on the mating surfaces of the second seal fh extend a knob portion g having a predetermined length, and the entire periphery except for the center seal fc located close to the inside of the second seal fh2. A score line C2 is provided and
Center seal fc formed on the back (bottom of container W)
Along the one side, a vertical cut line C1 is provided, which crosses the horizontal cut line C2. When the package Fw thus formed passes through the shrink tunnel in the next step, the film F is thermally shrunk and the container W is shrink-wrapped.

The package Fw obtained by heat-shrinking the container W as described above.
When the tearing force is applied along the second seal fh2 as shown in FIG. 15 to grip the knob g as shown in FIG. 15, the lateral direction excluding the center seal fc attached along the second seal fh2 Of the package Fw is opened along the discontinuous cut line C2 of FIG.
The center seal fc intersecting the seal fh2 is torn, and the container W is cut into a substantially T-shaped slit along a discontinuous cut line C1 in the vertical direction parallel to the center seal fc as a reinforcing guide. Can be opened at a stretch, the opening time can be shortened, and the container W can be easily taken out. In addition, since the vertical cutting device 30 and the horizontal seal bars 107 and 108 can be easily implemented by adding or changing the conventional existing horizontal bag making and filling machine, there is an advantage that it is advantageous in terms of cost.

In the above embodiment, the vertical cutting line C1 is used.
Is shown on one of the left and right sides of the center seal fc. However, the present invention is not limited to this, and it may be provided on both the left and right sides. In the seal / cutting device 105, the horizontal seal bars 107 and 108 are rotated to seal / cut the cylindrical film Fs. However, the present invention is not limited to this. It may be configured to be provided and sealed / cut.

[0029]

According to the present invention, in order to open the heat-shrinkable package according to the present invention, the film extending portion formed on the package is gripped and a tearing force is applied along the horizontal seal. A file in which the cylindrical width direction of the package is opened along a discontinuous cut line in the horizontal direction excluding the center seal provided along the horizontal seal, and further, the packaged object is wrapped.
Arm is one in a substantially T-shaped Kagizaki shape along the longitudinal direction of the discontinuous score line attached to parallel form in the center seal as a reinforcing guide portion tearing center seal intersected with the transverse sealing Since the package is easily opened, the time for opening the package can be shortened, and the packaged object can be easily taken out. In addition, since the vertical cutting device and the horizontal seal bar can be easily implemented by adding and changing the conventional existing horizontal bag making and filling machine,
There is an advantage that it is advantageous in cost.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view of a shrink packaging apparatus.

FIG. 2 is a front view of a film supply unit and a vertical cutting line device.

FIG. 3 is a plan view of the vertical score line device.

FIG. 4 is a perspective view of the vertical score line device.

FIG. 5 is a cross-sectional view of a horizontal seal bar.

FIG. 6 is a front view of the cutter.

FIG. 7 is a sectional view of a receiving roller member.

FIG. 8 is an explanatory diagram of an operation of a receiving roller member by a roller support shaft and the same handle.

FIG. 9 is a perspective view of a handle of the roller support shaft.

FIG. 10 is a cross-sectional view of the seal and cut device.

FIG. 11 is a front view of a horizontal seal bar.

FIG. 12 is a plan view illustrating a seal cut.

FIG. 13 is a perspective view of a shrink package.

14 is a rear perspective view of FIG.

FIG. 15 is an explanatory diagram of opening a shrink wrapper.

FIG. 16 is a perspective view of a conventional shrink package.

FIG. 17 is a front view of a conventional shrink package.

FIG. 18 is a schematic view of a conventional manufacturing apparatus.

FIG. 19 is a cross-sectional view of a conventional seal cut section.

FIG. 20 is a plan view illustrating a conventional seal cut.

[Explanation of symbols]

 21 Shrink wrapping device 30 Vertical slitting line device 105 Sealing and cutting device 107,108 Horizontal seal bar 109 Cutting cutter 111,112 First seal ridge 114,115 Second seal ridge 116 Cut line forming cutter FA, FB Film roll F Strip Film f Edge Fs Cylindrical film C1 Vertical cut line C2 Horizontal cut line fc Center seal fh1, fh2 Horizontal seal Fw Package W Container (packaged object) g Knob (film extension)

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) B65D 65/00-65/46 B65D 67/00-79/02 B65D 81/18-81/30 B65D 81 / 38 B65B 1/00-69/00

Claims (3)

(57) [Claims] 1. A package having a shrink film covering the entire surface of a package, wherein the package is provided with a center seal on one side of the package, and both end portions of the package. the lateral sealing is performed in a direction intersecting the center seal, the at least one of the transverse seal is formed part out film rolled, the exception of the center seal portion on the inner side of the transverse seal with the film extending portion A package having a configuration in which a discontinuous horizontal cut line is provided substantially parallel to the horizontal seal and a discontinuous vertical cut line crossing the horizontal cut line is provided at a position separated by a predetermined distance from the center seal. . 2. A belt-like film is drawn out from a film roll of a shrink film, and the belt-like film is formed into a tubular film while the belt-like film is being drawn out. Forming a discontinuous longitudinal cut line along the longitudinal direction corresponding to a position separated by a predetermined distance from the center seal to form a band-like film into a tubular film, and forming the tubular film into this tubular film. In the same manner, a packaged product is supplied at a predetermined interval into the same cylindrical film, and the lateral direction of the cylindrical film is sealed and cut before and after the packaged product. A film extending portion extending from the seal is provided, and a discontinuous horizontal cut line substantially parallel to the horizontal seal intersecting with the discontinuous vertical cut line is provided inside the horizontal seal portion. A packaging method in which the film is formed over substantially the entire width of the cylindrical film excluding the reel portion . 3. A strip-shaped shrink film is pulled out from a film roll, both ends of the strip-shaped film are overlapped, the overlapped portion is sealed and formed into a tubular film, and an article to be packaged is placed in the tubular film. In a shrink wrapping apparatus provided with a pair of horizontal seal members for supplying a horizontal seal in the lateral direction of the cylindrical film before and after the article to be packaged, the band-like film drawn from the film roll is formed into a cylindrical film. A means for forming a discontinuous vertical cut line in the feeding direction of the band-shaped film in a feeding direction of the band-shaped film until the position is adjustable in the band-shaped width direction. On one side, a cutter for cutting the strip-shaped film, a first seal ridge disposed at a position adjacent to the cutter, and a first seal ridge on the basis of the arrangement position of the cutter for cutting. A second seal ridge disposed at a predetermined distance from the opposite side of the portion, and a cylindrical film further separated from the second seal ridge by a distance from the disposition position of the cutting cutter. A cutting line forming cutter for forming a discontinuous cutting line at a position excluding the center seal portion in the lateral direction, and the other horizontal sealing member is provided with a cutting cutter of the one horizontal sealing member. A shrink wrapping apparatus having a configuration in which a cutter receiver is provided correspondingly to the first and second seal ridges, and seal ridges are similarly provided at positions corresponding to the first seal ridge and the second seal ridge.