JP2016097996A - Winding body, manufacturing method thereof and manufacturing method of content-contained packing bag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a winding body capable of easily manufacturing a content-contained packing bag opened by tearing off a label.SOLUTION: A winding body 1 comprises a core material 2 and a belt-like resin film 3 having at least a base material layer and a thermal adhesive resin layer and wound on the core material 2, and continuously forms a packing bag 10 of packing the predetermined content S by the extracted resin film 3, and the resin film 3 has a plurality of notches 5 formed in a predetermined period in the winding direction by projecting and connecting two points on the resin film 3 in one direction, and is provided with a label 4 stuck to the resin film 3 by covering the respective notches 5.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a winding body for continuously forming a packaging bag having a core material around which a resin film is wound and packaging the contents with a drawn-out resin film, and a method for manufacturing the winding body. Moreover, this invention relates to the manufacturing method of the packaging bag containing the content formed from a winding body.

  A conventional packaging bag is disclosed in Patent Document 1. This packaging bag is formed by thermally bonding a resin film, and both ends in the axial direction of the cylindrical resin film containing the contents are closed by thermal bonding. A cut is formed on the front surface of the packaging bag, and a label is attached so as to cover the cut. The incision is formed in a U-shape or the like in which two points on the resin film stretched in the axial direction are projected and connected in the stretching direction.

  In the packaging bag having the above configuration, when the user peels off the label in the axial direction, the resin film inside the cut is pulled by the label, so that the resin film is broken in the axial direction from both ends of the cut. Thereby, a packaging bag forms an opening part in the front surface, is opened, and the content can be taken out through an opening part. Moreover, after taking out a part of contents, a label can be stuck, an opening part can be closed, and a packaging bag can be resealed.

JP-A-7-89556 (2nd page, 3rd page, FIG. 1, FIG. 2)

  The conventional packaging bag is generally manufactured from a wound body obtained by winding a belt-shaped resin film around a core material. Specifically, the resin film is pulled out from the winding body, and a notch is formed in the resin film at a predetermined period in the drawing direction using a press machine or the like. And a label is stuck on a resin film so that each notch may be covered using a label sticking machine etc. Subsequently, using a bag making machine such as a pillow packaging machine, a packaging bag in which the contents are packaged with a resin film is continuously manufactured.

  For this reason, when manufacturing the packaging bag which packed the contents from a winding body, a press machine and a label sticking machine other than a bag making machine are needed separately. Therefore, there is a problem that the owner of the bag making machine needs capital investment at the time of manufacturing the packaging bag, and the packaging bag cannot be easily manufactured with the existing equipment.

  An object of this invention is to provide the winding body which can manufacture easily the packaging bag containing the content which peels and opens a label, and its manufacturing method. Moreover, an object of this invention is to provide the manufacturing method of the packaging bag containing the content which can be manufactured easily.

In order to achieve the above object, the present invention comprises a core material, and a strip-shaped resin film wound around the core material having at least a base material layer and a heat-adhesive resin layer, and the resin drawn out In a winding body for continuously forming a packaging bag in which a predetermined content is wrapped with a film,
The resin film has a plurality of cuts formed in a predetermined cycle in the winding direction by projecting and connecting two points on the resin film in one direction.
A label that covers each of the cuts and is attached to the resin film is provided.

  According to this configuration, the strip-shaped resin film wound around the core is formed with a plurality of cuts that project and connect two points on the resin film in one direction at predetermined intervals in the winding direction. A label is attached to the resin film so as to cover each cut. Then, for example, by using a bag making machine such as a pillow packaging machine, a packaging bag in which contents such as food are packaged by a resin film drawn from the winding body is formed continuously.

  In the wound body having the above-described configuration, the base material layer is formed of a uniaxially stretched film, and the stretching direction of the uniaxially stretched film coincides with the direction perpendicular to the winding direction. Are preferably arranged in the winding direction. According to this configuration, when the label is pulled in a direction perpendicular to the winding direction, the resin film is broken and an opening is formed in the direction perpendicular to the winding direction.

  Further, the present invention provides the winding body having the above-described configuration, wherein the base material layer is formed of a uniaxially stretched film, the stretching direction of the uniaxially stretched film coincides with the winding direction, and both ends of the cut are the windings. It is preferable to line up in a direction perpendicular to the direction. According to this configuration, when the label is pulled in the winding direction, the resin film is broken and an opening is formed in the winding direction.

  Further, the present invention provides the winding body having the above-described configuration, wherein the label is gripped when the packaging bag is opened adjacent to the adhesive sticking portion attached to the resin film. It is preferable that the holding portion is disposed on the side away from the open end of the resin film with respect to the sticking portion. According to this configuration, when the grip portion is gripped and the label is pulled in a direction approaching the open end, the resin film is broken and an opening is formed in a direction approaching the open end.

  In the winding body having the above-described configuration, it is preferable that the thickness of the label is 50 μm or less.

  Also, the method for producing a packaging bag containing contents according to the present invention is formed by arranging the contents on the resin film drawn out from the winding body having the above-described structure, and thermally bonding and cutting the resin film at a predetermined position. It is characterized by that.

The present invention also relates to a method for manufacturing a wound body for continuously forming a packaging bag made of a resin film in which predetermined contents are packaged.
An incision forming step of forming a plurality of incisions in a predetermined cycle to project and connect two points on the belt-shaped resin film drawn out from an original roll rolled around the original film of the resin film;
A label sticking step of sticking a label covering each of the cuts on the resin film;
A winding step of winding the resin film having the label attached thereto around a core material.

  According to the present invention, the wound body is formed with incisions formed by projecting and connecting two points on the resin film in one direction in the winding direction at a predetermined cycle, and a label covering each of the incisions is attached to the resin film. Thereby, the owner of the bag making machine can easily manufacture the packaging bag with contents to be opened by peeling off the label with the existing equipment.

The perspective view of the winding body of 1st Embodiment of this invention. The perspective view which shows the process of manufacturing the packaging bag which accommodated the content from the winding body of 1st Embodiment of this invention. The front view which shows the packaging bag which packaged the content with the resin film pulled out from the winding body of 1st Embodiment of this invention. The rear view which shows the packaging bag which packaged the content with the resin film pulled out from the winding body of 1st Embodiment of this invention The front view which shows a mode that the packaging bag which was formed from the winding body of 1st Embodiment of this invention and packaged the content was opened. The perspective view which shows the manufacturing process of the winding body of 1st Embodiment of this invention. Sectional drawing of the resin film and label for demonstrating the other example of the label sticking process of the winding body of 1st Embodiment of this invention. The perspective view of the winding body of 2nd Embodiment of this invention. The front view which shows the packaging bag which packaged the content with the resin film pulled out from the winding body of 2nd Embodiment of this invention The front view which shows a mode that the packaging bag which was formed from the winding body of 2nd Embodiment of this invention and packaged the content was opened.

<First Embodiment>
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a perspective view of a winding body 1 according to a first embodiment of the present invention. An arrow R indicates the winding direction of the resin film 3. The winding body 1 includes a core material 2 made of cylindrical corrugated paper and a strip-shaped resin film 3 wound around the core material 2. The resin film 3 is formed by laminating a base material layer, a barrier layer, and a thermoadhesive resin layer in order from the front surface side to the back surface side. The width D of the resin film 3 is about 80 mm, for example.

  The base material layer is formed of, for example, a uniaxially stretched polypropylene film having a thickness of 25 μm. The stretching direction of the uniaxially stretched polypropylene film coincides with the direction perpendicular to the winding direction of the resin film 3. The barrier layer for preventing permeation of water vapor or the like is formed of, for example, a polyethylene terephthalate film having a thickness of 12 μm subjected to aluminum vapor deposition. In addition, you may form a barrier layer with the polyethylene terephthalate film which gave silica vapor deposition, or aluminum foil. The thermal adhesive resin layer is formed by an easy peel film having a thickness of 30 μm, for example. The easy peel film is composed of, for example, a two-layer structure of polyethylene and ethylene copolymer.

  A plurality of cuts 5 penetrating the resin film 3 are formed in the winding direction at a predetermined period (for example, a period of 143 mm). The cut 5 is formed in a U-shape that is a continuous straight line and is convex in a direction perpendicular to the winding direction. The cut 5 is arranged on the left side of the central portion in the width direction of the resin film 3. Note that the shape of the cut 5 is not limited to a U-shape, and may be, for example, a semicircular shape or a dogleg shape. That is, the notch 5 is formed by connecting two points on the resin film 3 so as to protrude in a direction perpendicular to the winding direction, and both ends of the notch 5 may be arranged in the winding direction. Further, the cut 5 may be formed by perforations.

  A label 4 is attached to the resin film 3 so as to cover each notch 5. The label 4 extends on the side opposite to the protruding direction of the notch 5. The label 4 is formed in a home base shape in plan view, and has an adhesive sticking portion 4a attached to the resin film 3 and a non-adhesive gripping portion 4b adjacent to the sticking portion 4a. The sticking part 4a and the holding part 4b have a base material layer (not shown) made of polyethylene terephthalate having a thickness of 10 μm, for example. An adhesive layer (not shown) with a thickness of 30 to 40 μm, for example, is formed on the entire surface of one side of the base material layer of the sticking part 4a and the gripping part 4b, and the gripping part 4b is made of, for example, silicon resin on the adhesive layer. It becomes non-tacky by forming a paste killing layer. Thereby, the thickness of the label 4 is formed to 50 μm or less. The sticking part 4 a covers the notch 5, and the gripping part 4 b is arranged on the opposite side of the open end of the notch 5. As will be described later, the gripping portion 4b is gripped when the packaging bag 10 (see FIGS. 4 and 5) is opened.

  FIG. 2 is a perspective view of a process of manufacturing the packaging bag 10 (see FIGS. 3 and 4) containing the contents S from the winding body 1. An arrow DR indicates the drawing direction of the resin film 3. The winding body 1 configured as described above is attached to a roller of a bag making machine (not shown) such as a pillow packaging machine, and the resin film 3 is moved from the winding body 1 to the arrow DR with the open end 6 of the resin film 3 being the leading end in the drawing direction. Pull in the direction. For example, a stick-shaped confectionery content S is arranged on the drawn resin film 3 and the resin film 3 is guided by a guide member (not shown) to form a cylindrical resin film 3. The contents S are wrapped with a cylindrical resin film 3.

  And the both-sides edge of the cylindrical resin film 3 is heat-bonded mutually with a heat sealer (not shown), and the palm seal part 13 is formed. Thereafter, both ends of the tubular resin film 3 in the drawing direction are thermally bonded by the heat sealer 20. Then, both ends of the tubular resin sheet 3 in the drawing direction are cut by the blade 21. Thereby, the packaging bag 10 which packaged the content S is formed continuously. The packaging bag 10 is a so-called pillow type. Through the above steps, the owner of the bag making machine can easily manufacture the packaging bag 10 with the existing equipment.

  3 and 4 respectively show a front view and a rear view of the packaging bag 10 formed from the winding body 1 by the manufacturing process shown in FIG. The packaging bag 10 has a front surface portion 11 and a back surface portion 12 which are opposed to each other and is formed into a cylindrical shape by the resin film 3. The contents S are accommodated and upper and lower end edges are thermally bonded. The extending direction of the base material layer of the resin film 3 coincides with the circumferential direction of the packaging bag 10. On the front surface portion 11 of the packaging bag 10, the product name, design, etc. of the contents S are printed.

  The back surface portion 12 of the packaging bag 10 is provided with a palm seal portion 13 protruding from the central portion in the left-right direction and extending in the axial direction. The joint seal part 13 is pressed at the top and bottom during heat bonding by the heat sealer 20 (see FIG. 2), and tilts to the left in FIG.

  The notch 5 is arranged on the opposite side (right side in FIG. 4) in the tilting direction with respect to the palm seal portion 13 with the open end facing the palm seal portion 13 on the upper side of the back surface portion 12.

  The label 4 covers the notch 5, extends in the direction opposite to the protruding direction of the notch 5, and is attached to both the back surface portion 12 and the front surface portion 11. At this time, the grip portion 4 b of the label 4 is disposed on the back surface portion 12 between the notch 5 and the palm seal portion 13.

  FIG. 5 shows a front view when the packaging bag 10 is opened. When the user grips the gripping portion 4b and peels off the label 4 in the extending direction, the inside of the cut 5 is pulled by the label 4 and is separated from the back surface portion 12. Thereby, opening of the packaging bag 10 is started, and the notch 5 comprises the opening start part which starts opening. When the label 4 is further pulled, the resin film 3 is broken from both ends of the notch 5 and is torn along with the label 4 in a band shape. When the label 4 peeled off from the back surface portion 12 to the end on the front surface portion 11 is further pulled, the strip-shaped resin film 3 extends from the end of the label 4 and is torn.

  Thereby, the opening part 14 from the back surface part 12 to the front surface part 11 is formed, and the packaging bag 10 is opened. At this time, since the label 4 is attached along the extending direction of the base material layer of the resin film 3, the opening 14 extending from the back surface portion 12 to the entire front surface portion 11 can be easily formed.

  When the packaging bag 10 is opened, the content S is taken out through the opening 14 by tilting the upper part of the opening 14 backward. At this time, since the opening portion 14 is formed from the front surface portion 11 to the back surface portion 12, the content S is hardly caught on the packaging bag 10 when the content S is taken out. Therefore, the convenience of the packaging bag 10 can be improved.

  Moreover, since the opening part 14 is formed in the circumferential direction in the upper part of the packaging bag 10 at the time of opening of the packaging bag 10, the fall of the content S can be prevented. Moreover, since the label 4 is affixed to a part of the front surface part 11 of the packaging bag 10, the display of a product name, a design, etc. is obstructed rather than the case where the label 4 is affixed to the entire left and right ends of the front surface part 11. Absent.

  Further, a notch 5 is formed on the opposite side of the tilting direction of the palm seal portion 13 on the back surface portion 12. Thereby, the user can easily hold the holding portion 4b.

  Moreover, since the extending direction of the base material layer of the resin film 3 coincides with the circumferential direction of the packaging bag 10, when the user holds the gripping part 4 b and pulls it in the circumferential direction of the packaging bag 10, the notch 5 The resin film 3 is easily broken in the circumferential direction. Therefore, the easy-openability of the packaging bag 10 can be improved.

  Moreover, since the base material layer of the resin film 3 is formed of a uniaxially stretched polypropylene film, the front portion 11 and the back portion 12 can be reduced in wrinkles, and the strength of the packaging bag 10 can be easily improved. .

  Next, the manufacturing method of the winding body 1 having the above-described configuration will be described. FIG. 6 shows a perspective view of the manufacturing process of the wound body 1. The resin film 3 is drawn in the direction of arrow R from the original roll 30 wound with the original film of the resin film 3. In the cut forming step of Step # 1, the cuts 5 are formed in the resin film 3 in the direction of the arrow R at a predetermined cycle (for example, a cycle of 143 mm) by a press machine or the like.

  Then, in the label sticking process of step # 2, the label 4 is stuck to the resin film 3 so as to cover each notch 5 respectively. At this time, the label 4 previously cut into a home base shape is stuck on the resin film 3 in order using a label sticking machine or the like. It should be noted that a paste-killing layer is previously formed on the portion of the label 4 that becomes the holding portion 4b as described above. Then, in the winding process of step # 3, the resin film 3 to which the label 4 is attached is wound around the core material 2. Thereby, the wound body 1 is manufactured.

  FIG. 7 shows a cross-sectional view of the resin film 3 and the label 4 for explaining another example of the label sticking process of Step # 2. The original fabric 40 of the resin film 3 and the original fabric 40 of the label 4 are drawn out in a direction perpendicular to the paper surface in FIG. In other words, the original fabric of the resin film 3 and the original fabric 40 of the label 4 are drawn out in the same direction. The raw fabric 40 includes a base material layer 41 and an adhesive layer 42 formed on one surface of the base material layer 41.

  In the label sticking step of Step # 2, the original fabric 40 is viewed in plan view with a cutter or the like at the position of arrow C almost simultaneously with the adhesive layer 42 of the original fabric 40 being brought into contact with the resin film 3 so as to cover the notch 5. Cut into shapes. And the remaining part (part which is not used as the label 4) after cutting off the label 4 of the raw fabric 40 is wound up by a roller (not shown), peeled off from the resin film 3 and collected (removed up). ). Thereby, the label 4 can be cut off from the original fabric 40 and the label 4 can be adhered to the resin film 3 almost simultaneously.

  At this time, the sticking part 4 a and the gripping part 4 b are arranged side by side in a direction perpendicular to the direction in which the original film of the resin film 3 is drawn from the original film roll 30. For this reason, before the adhesive layer 42 is brought into contact with the resin film 3, a band-shaped paste-killing layer 43 extending in the pull-out direction is formed in advance on the original fabric 40, and a portion that becomes the gripping portion 4 b is disposed on the paste-killing layer 43. The non-adhesive gripping portion 4b can be easily formed. Note that the paste-killing layer 43 is formed of, for example, silicon resin.

  According to the present embodiment, the winding body 1 is formed with notches 5 that project and connect two points on the resin film 3 in one direction in the winding direction at a predetermined cycle, and the labels 4 that cover the notches 5 are the resin film 3. Affixed to. Thereby, the owner of a bag making machine can manufacture easily the packaging bag 10 which peels off the label 4 and is opened by the existing installation.

  Further, the stretching direction of the base material layer of the resin film 3 coincides with the direction perpendicular to the winding direction, and both ends of the notch 5 are arranged in the winding direction. Thereby, when the label 4 is pulled in the winding direction, the resin film 3 is broken and an opening is formed in the winding direction. Therefore, the easy opening property of the packaging bag 10 formed from the winding body 1 can be improved.

  Moreover, since the thickness of the label 4 is 50 μm or less, the unevenness on the resin film 3 of the wound body 1 can be reduced. Therefore, even if the label 4 is attached to the resin film 3 wound around the core material 2, wrinkles on the resin film 3 can be reduced.

  Further, the packaging bag 10 is formed by arranging the contents S on the resin film 3 drawn out from the winding body 1, and thermally bonding and cutting the resin film 3 at a predetermined position. Thereby, the packaging bag 10 which accommodated the content S can be manufactured easily.

  Moreover, the notch formation process which forms the some notch 5 which protrudes and connects in two directions on the strip | belt-shaped resin film 3 pulled out from the original fabric roll 30 which wound the original fabric of the resin film 3 in a predetermined period. And the label sticking process which sticks the label 4 which covers each notch 5 on the resin film 3, and the winding process which winds up the resin film 3 on which the label 4 was stuck to the core material 2 are provided. Thereby, the winding body 1 can be manufactured easily.

Second Embodiment
Next, a second embodiment of the present invention will be described. FIG. 8 shows a perspective view of the winding body 1 of the present embodiment. For convenience of explanation, the same reference numerals are given to the same parts as those in the first embodiment shown in FIGS. This embodiment is different from the first embodiment in the stretching direction of the base material layer of the resin film 3, the arrangement of the labels 4, and the arrangement of the cuts 5. Other parts are the same as those in the first embodiment.

  The base material layer of the resin film 3 is formed of, for example, a uniaxially stretched polyethylene terephthalate film having a thickness of 12 μm. The stretching direction of the uniaxially stretched polyethylene terephthalate film coincides with the winding direction of the resin film 3. The barrier layer is formed of, for example, a polyethylene terephthalate film having a thickness of 12 μm subjected to aluminum vapor deposition. In addition, you may form a barrier layer with the polyethylene terephthalate film which gave silica vapor deposition, or aluminum foil. The heat-adhesive resin layer is formed of, for example, an unstretched polypropylene film having a thickness of 20 μm.

  Note that a uniaxially stretched polyethylene terephthalate film having a thickness of 12 μm may be used for the base material layer, and an unstretched polypropylene film having a thickness of 25 μm deposited with aluminum as a heat-adhesive resin layer without the barrier layer may be used.

  The notch 5 has two points on the resin film 3 protruding and connected in the winding direction, and both ends of the notch 5 are aligned in a direction perpendicular to the winding direction. The holding part 4b is arranged on the side away from the open end 6 of the resin film 3 with respect to the sticking part 4a. Thereby, in the manufacturing process (refer FIG. 2) of the packaging bag 10, peeling of the label 4 by the twist of the holding part 4b can be prevented.

  FIG. 9 shows a front view of the packaging bag 10 formed from the winding body 1 of the present embodiment. The packaging bag 10 has a front surface portion 11 and a back surface portion 12 which are opposed to each other and is formed into a cylindrical shape by the resin film 3. The contents S are accommodated and upper and lower end edges are thermally bonded. The extending direction of the base material layer of the resin film 3 coincides with the axial direction of the packaging bag 10. A convex U-shaped cut 5 is formed in the upper portion of the front surface portion 11 of the packaging bag 10.

  The label 4 covers the notch 5 and is attached to the upper portion of the front surface portion 11 and extends downward. At this time, the gripping portion 4 b of the label 4 is arranged above the notch 5 on the back surface portion 12.

  FIG. 10 shows a front view when the packaging bag 10 is opened. In the packaging bag 10 having the above configuration, when the user grips the gripping portion 4b and peels it off in the axial direction of the packaging bag 10, the resin film 3 is broken in the axial direction of the stretching direction to form the opening 16. The Thereby, the packaging bag 10 is opened, and the user can take out the content S through the opening 16.

  According to this embodiment, the same effect as that of the first embodiment can be obtained. Moreover, the extending direction of the base material layer of the resin film 3 coincides with the winding direction, and both ends of the cut 5 are aligned in a direction perpendicular to the winding direction. Thereby, when the label 4 is pulled in the winding direction, the resin film 3 is broken and an opening is formed in the winding direction. Therefore, the easy opening property of the packaging bag 10 formed from the winding body 1 can be improved.

  Moreover, the holding part 4b is distribute | arranged to the side away from the open end 6 of the resin film 3 with respect to the sticking part 4a. Thereby, when the packaging bag 10 which pulled out the resin film 3 from the winding body 1 and packaged the contents S is formed, peeling of the label 4 due to the pinching of the gripping portion 4b can be prevented.

  In the first and second embodiments, the packaging bag 10 is a pillow type. However, the resin film is folded and the front and back heat-adhesive resin layers facing each other are thermally bonded at three edges. A three-sided seal type that seals and stores the contents may be used, or a standing pouch may be used.

  INDUSTRIAL APPLICATION This invention can be utilized for the winding body for forming continuously the packaging bag which packaged the predetermined contents with the drawn-out resin film.

DESCRIPTION OF SYMBOLS 1 Winding body 2 Core material 3 Resin film 4 Label 4a Adhesion part 4b Holding part 5 Cutting 6 Open end 10 Packaging bag 11 Front part 12 Rear part 13 Joint seal part 14, 16 Opening part 20 Heat sealer 21 Blade 30 Original fabric Roll S Contents

Claims (7)

A packaging bag comprising a core material and a belt-shaped resin film wound around the core material and having at least a base material layer and a heat-adhesive resin layer, and packaging predetermined contents with the drawn-out resin film In the winding body for continuously forming
The resin film has a plurality of cuts formed in a predetermined cycle in the winding direction by projecting and connecting two points on the resin film in one direction.
A winding body provided with a label that covers each of the cuts and is attached to the resin film.   The base material layer is formed of a uniaxially stretched film, and the stretching direction of the uniaxially stretched film coincides with a direction perpendicular to the winding direction, and both ends of the cut are aligned in the winding direction. Item 2. A wound body according to item 1.   The base material layer is formed of a uniaxially stretched film, and the stretching direction of the uniaxially stretched film coincides with the winding direction, and both ends of the cut are aligned in a direction perpendicular to the winding direction. Item 2. A wound body according to item 1.   The label has a non-adhesive gripping part that is gripped when the packaging bag is opened adjacent to the adhesive sticking part that is stuck to the resin film, and the gripping part is the sticking part. The winding body according to claim 3, wherein the winding body is disposed on a side away from an open end of the resin film with respect to the portion.   The wound body according to any one of claims 1 to 4, wherein the label has a thickness of 50 µm or less.   It is formed by arranging the contents on the resin film drawn out from the winding body according to any one of claims 1 to 5, and thermally bonding and cutting the resin film at a predetermined position. The manufacturing method of the packaging bag containing the content. In a method of manufacturing a wound body for continuously forming a packaging bag made of a resin film in which predetermined contents are packaged,
An incision forming step of forming a plurality of incisions in a predetermined cycle to project and connect two points on the belt-shaped resin film drawn out from an original roll rolled around the original film of the resin film;
A label sticking step of sticking a label covering each of the cuts on the resin film;
And a winding step of winding the resin film having the label attached thereto around a core material.

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