JP4455387B2 - Packaging structure and method - Google Patents

Description

  The present invention relates to a packaging structure and method using a packaging film.

  Conventionally, as shown in, for example, Patent Document 1 below, in envelope pasting and packaging with a heat-shrinkable synthetic resin film, the surfaces to be joined to each other are overlapped, and electrostatic sealing is performed on the overlapped seal surface, Forming packaged products by heating and shrinking is performed.

In recent years, since it is difficult to take out a product from a heat-shrinkable package, various techniques for easily breaking the package have been proposed. For example, as one of them, cutting the resin film excessively long, providing the extended part as a knob on the outside of the resin film, and pulling the knob, breaks the perforation line provided near the knob The thing comprised so that is proposed (refer patent document 2).
JP-A-61-81932 Japanese Utility Model Publication No. 5-35751

  However, in the case of Patent Document 2 described above, since an extra knob is provided, there is a problem in that the amount of resin film used is increased and the cost is increased. In order to eliminate such a difficulty, it is conceivable to use a cheaper one than the resin film as the knob. However, in this case, there is a disadvantage that the manufacturing process is increased and the manufacturing operation is complicated.

  The present invention has been made to solve the above-described problems of the prior art, and an object of the present invention is to provide a packaging structure and method capable of simplifying the manufacturing operation and reducing the cost.

The packaging structure according to the invention of claim 1 is a state in which an article to be packaged having a substantially flat upper surface and a lower surface is housed in a bag-shaped packaging body made of a packaging film having corner portions on both sides of the bottom portion . The opening of the package is fused and sealed so that the line connecting the corners on both sides of the bottom and the line connecting the sides of the corner formed by the fusion seal are in a torsional positional relationship. the a packaging structure made by thermal shrinkage, made from one or both of the sides of the corner portion formed by heat-sealing of one or both or the package opening, at the corners of the bottom sides of the package The heat shrinkage is formed only on the top surface of the package, only on the bottom surface of the package, or on the top surface and the bottom surface. a projecting knob portion, said knob Characterized by comprising a breaking portion provided in the vicinity.

Packaging structures according to the invention of claim 2, in the packaging structure of claim 1, wherein the rupture portion, characterized in that it is formed into a linear shape surrounding the periphery of the knob.

The packaging structure according to a third aspect of the invention is the packaging structure according to the first aspect , wherein the fracture portion is a linear shape surrounding the knob portion after heat shrinkage, and One of the upper surface side and the lower surface side is formed in a linear shape or an arc shape with the knob portion on the curvature center side on one side or both sides forming the knob portion.

The packaging method according to the invention of claim 4 is a method of packaging an article to be packaged having a substantially flat upper surface and lower surface, having a corner portion on both sides of the bottom portion using a packaging film, and breaking at a predetermined location. a step of preparing a bag-like package having a parts, a line segment and a step of inserting the packaged articles through the opening in the packaging body, which is heat-sealing the opening of the package, connecting the corners of the bottom sides And a line segment connecting both sides of the corner formed by the fusing seal, and a twisting positional relationship, one or both of the corners on both sides of the bottom of the package , or the opening of the package One or both of the corners on both sides formed by the fusing seal is only one on the upper surface of the packaged object, only one below the lower surface of the packaged object, or on the upper surface and the above one by one protruding tab portion under the lower surface As to leave it, the package characterized in that it comprises a step of heat shrinking.

A packaging method according to a fifth aspect of the present invention is the packaging method according to the fourth aspect , characterized in that the fracture portion is formed in a line substantially parallel to the bottom of the packaging body or the vicinity of the opening fusing portion. To do.

Wrapping method according to the invention of claim 6 is the packaging method according to claim 4 or 5, the step of inserting the packaged articles through the opening in the package body, the articles to be packaged in the bottom of the package In the insertion state, the distance from one of the corners on both sides of the bottom of the package to the packaged object is longer than the distance from the other corner to the packaged object. It is characterized by doing.

  Further, the packaging method according to the invention of claim 7 is the packaging method according to claim 4 or 5, wherein the step of inserting the packaged object from the opening into the package body is formed by a fusing seal in a subsequent step. The distance from one of the corners on both sides of the melted part of the opening to the packaged object is such that the packaged object intersects the melted part of the opening. The packaged object is inserted so as to be longer than the distance to the packaged object.

If by the packaging structure and method of the present invention, because it forms a corner of the bag-like package as protruding grip portion, it is not necessary to use an additional separate member, inexpensive cost together thereby manufacturing operations briefly Can be achieved. Moreover, since the break part is provided in the vicinity of the knob part, when the knob part is picked and pulled, the package can be easily broken, and the package can be easily taken out. In addition, when the projecting knob is formed on one of the top and bottom, the item to be packaged is placed with the knob forming side facing upward, and when the protrusion is picked up or down The knob portion can be arranged on the upper side of the article to be packaged. In this case, one knob is formed on the upper side or the lower side, or one each on the upper side and the lower side. Therefore, when the article to be packaged is placed, only one knob can be arranged on the upper side. As compared with the case where two or more are arranged on the same surface, it is possible to easily determine where to pick. In this configuration, when the article to be packaged has a substantially flat upper and lower surfaces, protrusions that can be used as knobs can be formed one by one up and down as follows. That is, when fusing and sealing so that the line segment connecting the corners on both sides of the bottom of the package and the line segment connecting both sides of the corner formed by the fusing seal forms a twisted positional relationship, If the upper and lower surfaces of the package are substantially parallel to the line segment connecting the corners on both sides of the bottom of the package, the two projections formed on both sides of the corner formed by fusing seals on the upper and lower surfaces of the package The remaining two protrusions are formed around the package 1 from the corners on both sides of the bottom of the package. On the other hand, if the upper and lower surfaces of the packaged object are substantially parallel to the line connecting both sides of the corner part formed by the fusing seal, two pieces comprising the corners on both sides of the bottom of the package on the upper and lower surfaces of the packaged object And the two protrusions consisting of the corners on both sides formed by the fusing seal around the package.

In the case of the invention structure according to claim 2 , by pulling and pulling the knob portion surrounded by the break line, the break line is broken and the knob portion is cut off to form a large outlet.

In the case of the invention structure according to claim 3 , when the knob portion is picked and pulled, the break line in the vicinity is broken into a straight line or an arc shape, and a large outlet is formed.

In the case of the method of the invention of claim 5 , it is only necessary to form a rupture portion along the line direction in a line for continuously producing a bag-like package from a packaging film, and the formation of the rupture portion is easy. There is an advantage that can be done.

In the case of the method according to claims 6 and 7, the protruding height of the corner portion of the long distance becomes larger than the height of the corner portion of the short distance protruding outward from the package. Thereby, when the larger corner | angular part is used as a knob | pick part, it will become easy to pick and the fracture | rupture of a package can be performed more easily.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 shows a packaging structure in which a package 1 made of a disk-shaped fried tempura as an ingredient such as instant noodles is shrink-wrapped by a packaging body 2. In addition, the to-be-packaged object 1 which consists of the said deep-fried tempura has the substantially flat upper surface and lower surface with some unevenness | corrugations.

  Examples of the material of the package 2 include heat-shrinkable packaging films such as polypropylene, polyethylene, polystyrene, polyvinyl chloride, polyethylene terephthalate, polybutylene terephthalate, and polyamide (a plurality of films made of the above resin materials). Including laminates of materials).

  As the packaging body 2, one produced in a bag shape as shown in FIG. 2 is used. As shown in FIG. 2 (a), the packaging film 10 wound in a roll is fed out, folded in the width direction as shown in FIG. 2 (b), and predetermined from the folded portion 10a. A straight fracture portion parallel to the folded portion 10a, a perforation 11 in the illustrated example, is formed along the direction of the production line at a position separated by a distance, and then the film is formed as shown in FIG. 10 is produced by fusing and sealing with a certain length dimension. 2 (b) is a perforation forming apparatus in which a number of cutting blades provided in the periphery rotate, and 13 in FIG. 2 (c) melts the film and welds the melted portion. This is a fusing seal device. In addition, as described above, when the perforation is formed along the production line direction, there is an advantage that the perforation (breaking portion) can be easily formed.

  Therefore, as shown in FIG. 2 (d), the package 2 is a place where the bottom 2a is formed of a folded portion 10a and both side edges 2b are fused and sealed, and the corners 3 are provided on both sides of the bottom 2a. In addition, an opening 4 is formed on the side opposite to the bottom 2a, and a perforation 11 is formed near the bottom 2a, for example, as a bag-like package 2 formed in a straight line parallel to the bottom 2a.

  Moreover, the said package 2 pays out two packaging films 10 and 10 'wound by roll shape, as shown to Fig.3 (a), both films 10, as shown in FIG.3 (b), The end portions of 10 'are heat sealed (welded) with a heat sealing device (heat sealing roller or the like) 14 to form a bottom portion 15 and then a perforation 11 as a fracture portion is formed with a perforation forming device 12 or the like. Subsequently, it may be produced by fusing with the fusing seal device 13 or the like in the same manner as before. Furthermore, the package 2 can be formed by fusing three sides.

  Regarding the formation position of the perforation 11, when one or both of the corners of the bottom 2a or 15 of the bag-like package 2 is used for the protruding knob, the position is close to the bottom 2a or 15, As will be described later, when the opening 4 side is melted to form a new corner, and one or both of the corners are used for the protruding knob, the position is closer to the opening 4.

  FIG. 4 is an explanatory diagram of work contents for performing shrink wrapping using the bag-shaped package 2.

  For example, the bag-shaped package 2 is vertically extended so that the bottom portion 2a is in the vertical direction, and the opening 4 is widened, and the package 1 is placed sideways through the opening 4 (the radial direction of the package 1 is horizontal). Then, the opening 4 is sealed with a fusing seal in the vertical direction by the fusing seal device 13 or the like. Thereafter, heat is applied to the entire bag-shaped package 2 so that the package 2 remains in a state in which the corners 3 on both sides of the bottom 2a protrude upward and downward of the package 1 as shown in FIG. Heat shrink. In FIG. 1, the lower corner 3 is not shown. Further, 5 in FIG. 1 is a corner portion newly formed by fusing and sealing the opening 4 (described later in FIG. 6). Also, 2b is the side 2b.

  By the above-described operation, the packaging structure according to the present embodiment, that is, the corner portions 3 on both sides of the bottom portion of the package 2 are left as projecting knobs on the top and bottom of the package 1, and the bottom portion is located in the vicinity of the knob 3. The perforation 11 as a fractured portion formed in a straight line parallel to 2a has an arcuate shape with the knob 3 on the center of curvature on the upper and lower surfaces of the entire circumference surrounding the knob 3 after heat shrinkage. A formed structure is obtained. The form of the perforation 11 may be, for example, a shape that is linear or wavy over the entire circumference surrounding the knob 3 and on the upper surface and the lower surface after heat shrinkage.

  Therefore, in the case of this embodiment, since the corner 3 of the package 2 is formed as a protruding knob, it is not necessary to use a separate member separately, which can simplify the manufacturing operation and reduce the cost. I can plan. Moreover, since the corner | angular part (pick part) 3 remains in the shape of a protrusion, even if the other part of the package 2 is closely_contact | adhered with the to-be-packaged object 1 by heat contraction, the corner | angular part (pick part) 3 is easy. Furthermore, since the perforation 11 as the breaking portion is provided in the vicinity of the knob portion 3, the package 2 can be easily broken by picking and pulling the knob portion 3 The package 1 can be taken out.

  In the above description, the bottom 2a of the package 2 is vertical, that is, the line connecting the corners 3 at both ends of the bottom 2a is vertical, and the package 1 is horizontal (the radial direction of the package 1 is horizontal). In contrast to this, the bottom 2a of the package 2 is placed sideways, that is, the line connecting the corners 3 at both ends of the bottom 2a is placed sideways, and the package 1 is placed vertically (covered). The package 1 may be inserted so that the radial direction of the package 1 is vertical). In short, the package 1 may be inserted so as to intersect the package 1 (intersection angle is arbitrary).

  Moreover, although the case where the corner | angular part 3 of both sides of the bottom part 2a is used as a knob | pick part is mentioned as an example in embodiment mentioned above, this invention is not limited to this. For example, the corner 5 newly formed by fusing and sealing the opening 4 may be formed so as to be used as a knob so as to be positioned above and below the package 1. That is, the package 1 is inserted into the package 2 that is horizontal (the bottom 2a is horizontal) (the radial direction of the package 1 is horizontal), and the opening 4 of the package 2 is blown and sealed in the horizontal direction. In other words, the opening 4 is vertically long, melted and sealed, and thermally contracted, whereby the same one as in FIG. 1 is formed. Moreover, this invention does not take the form in which the corner | angular part 3 or 5 is located in the upper and lower sides of the to-be-packaged object 1, Four corners 3 and 5 are used for the knob | pick part around the circumferential direction of the to-be-packaged object 1. It may be left as a protrusion. As described above, when the newly formed corner portion 5 is used as a knob by fusing and sealing the opening 4, the perforation 11 is formed in the vicinity of and parallel to the opening fusing portion.

  In order to form the corner 3 or 5 used as the above-mentioned protruding knob, the corner formed by fusing and sealing the opening 4 with respect to a line segment connecting the corners 3 at both ends of the bottom 2a. The fusing seal of the opening 4 is set so that the line segment connecting the five is (a) on the same plane, or (b) the two line segments are not on the same plane and form a twisted positional relationship. There is a need to do. FIG. 5 shows a state in which a line segment 20 connecting the corners 3 at both ends of the bottom 2a and a line segment 21 connecting the corners 5 formed by fusing and sealing the opening 4 form a positional relationship of torsion. FIG.

  In the case of the above (a), the bottom 2a of the bag-shaped package 2 and the fusing part obtained by fusing and sealing the opening 4 are on the same plane, and the directions of the generally flat upper and lower surfaces of the package 1 are substantially the same as the above plane. If parallel, four projections consisting of corners 3 and 5 remain around the article 1 to be packaged, and the top and bottom surfaces of the article 1 to be packaged 1 unless the directions of the top and bottom surfaces are substantially parallel to the plane. 4 projections consisting of the corner portions 3 and 5 remain.

  In the case of (b) above, if the upper and lower surfaces of the package 1 are substantially parallel to the line segment 20, two protrusions consisting of corners 5 remain on the upper and lower surfaces of the package 1, and the package 1 Two protrusions comprising the corner portions 3 remain around the package 1. On the other hand, if the upper and lower surfaces of the article to be packaged 1 are substantially parallel to the line segment 21, two protrusions comprising the corner portions 3 remain on the upper and lower surfaces of the article to be packaged 1 and the area around the article to be packaged 1. Two protrusions consisting of the corners 5 remain. Furthermore, if the upper surface and the lower surface of the package 1 are not parallel to the line segment 20 and the line segment 21, four protrusions including the corner portions 3 and 5 remain on the upper surface and the lower surface of the package 1. In other words, in this case (b), no matter what direction the package 1 is inserted into the bag-shaped package 2, there are always two or more on the upper and lower surfaces of the package 1. A protrusion is formed. In addition, the above is a case where the packaged object 1 having a substantially flat upper surface and lower surface is used, but for the packaged object 1 of other forms, the material is blown as described in (a) and (b) above. Of course, it is possible to form a projection used as a knob at an arbitrary location.

  Furthermore, it is preferable to enlarge the knob so that the package can be easily broken. The method will be described with reference to FIG.

  As shown in FIG. 6, the bag-like package 2 is inserted vertically and the package 1 is inserted horizontally. At this time, the package 1 is inserted such that the distance L1 from the upper corner 3a to the package 1 is longer than the distance L2 from the lower corner 3b to the package 1. In other words, the bottom 2a of the package 2 is held in the up-down direction, and the bottom 2a side of the package 1 is in the insertion state lower than the opening 4 side. The reason is that there are few gaps between the package 2 and the article 1 to be packaged. In other words, the width of the package 2 is slightly larger than the cross-section in the diametrical direction of the package 1 (the package 2 and the package 1) in a state where the package 1 is placed inside the package 2. This is because it is common in terms of ease of insertion and reduction in the amount of shrinkage required during heat shrinkage.

  Subsequently, the opening 4 is sealed in the up and down direction at the position of the broken line, and then thermally contracted. 6 is a portion that is newly formed as a corner portion 5 by fusing and sealing the opening 4 described above.

  In the case of this method, when the package 2 is thermally shrunk, the package 2 portion corresponding to the diameter portion of the package 1 whose direction coincides with the width direction of the package 2 is first applied to the package 1. Close or in close contact. At this time, since the entire package 2 contracts almost equally, the upper side of the long distance L1 is higher than the height at which the lower corner portion 3b of the short distance L2 protrudes outward (downward) from the package 1. The protruding height of the corner 3a is increased. Thereby, if the larger corner | angular part 3a which remains on the to-be-packaged object 1 is used as a knob | pick part, it will become easy to pick and the package can be broken more easily.

  In addition, by appropriately changing the ratio between the distance L1 and the distance L2 and the end timing of heat shrinkage, it is possible to make the protruding height of the lower corner 3b not used as the knob portion inconspicuous.

  In the said embodiment, although the case where the disk-shaped fried mandala which has a substantially flat upper surface and lower surface with some unevenness | corrugations as a package is mentioned as an example, this invention is not limited to this. For example, the same applies to disc-shaped tools having flat upper and lower surfaces, or general items whose package is rounded at the corners (including other materials and products other than tools and tools). Can do. The present invention can also be applied to rectangular tools and other materials and products. In this case, the following application examples are used. That is, when the width direction (or length direction) of the article to be packaged and the width direction of the package body 2 are aligned and inserted, and the package body 2 is fused and sealed in the thickness direction of the article to be packaged, Although the corners approach or closely contact the four corners of the packaged object, it becomes difficult to form a knob, but as shown in FIG. A knob can be formed on the package. Furthermore, the present invention can also be applied to an article to be packaged whose thickness is not constant. In this case, the same direction as before may be selected as appropriate with the easy-to-place surface as the bottom surface.

  In the above-described embodiment, the number of knobs is not specified, but the present invention may use any one or more of the plurality of protrusions formed as the knob. Of course.

  Furthermore, in the above-described embodiment, the perforation is used as the breaking portion, but the present invention is not limited to this. As the fracture portion, for example, a linear thin portion having a concave or V-shaped cross section may be formed. Moreover, it is not always necessary to form the perforation or the linear thin-walled portion over the entire circumference of the package body, and the breakage portion may be formed in a part of the package body.

It is a perspective view which shows the packaging structure concerning one Embodiment of this invention. It is explanatory drawing of the production process of the package which comprises the packaging structure of FIG. It is explanatory drawing of another production process of a package. It is explanatory drawing of the operation | work content which shrink-wraps a to-be-packaged object with a package. It is explanatory drawing of the positional relationship of a twist. It is explanatory drawing of the packaging method concerning other embodiment of this invention.

1 Package 2 Packaging 2a Bottom 3, 3a, 3b, 5 Corner (projection or knob)
4 opening 10, 10 'packaging film 11 perforation (breaking part)

Claims (7)

Summary packaged articles having flat upper and lower surfaces, in a state contained in the pouch-like package comprising a packaging film having a corner portion on the bottom sides, and heat-sealing the opening of the package, In a packaging structure produced by causing the line segment connecting the corners on both sides of the bottom part and the line segment connecting both sides of the corner part formed by the fusing seal to have a twisted positional relationship, and heat shrinking the package body There,
One or both of the corners on both sides of the bottom of the package , or one or both of the corners on both sides formed by a fusing seal of the package opening, one only on the top surface of the packaged object, one only under the lower surface of the material to be packaged, or, one under the upper and the lower surface of the top surface, a protruding tab portion formed by the heat shrinkage,
Packaging structure characterized by comprising a breaking portion provided in the vicinity of the knob. In the packaging structure according to claim 1 ,
The packaging structure, wherein the breaking portion is formed in a line surrounding the periphery of the knob portion. In the packaging structure according to claim 1 ,
After the heat shrinkage, the rupture portion has a linear shape surrounding the knob portion, and is linear on one or both sides forming the knob portion on the upper surface side and the lower surface side of the package. Alternatively, the packaging structure is formed in an arc shape in which the knob is on the curvature center side. A method of wrapping an article to be wrapped having a generally flat upper and lower surface ,
A step of producing a bag-like package having a corner on both sides of the bottom using a packaging film and having a break at a predetermined location;
A step of inserting the packaged articles through the opening in the packaging body,
A process of fusing and sealing the opening of the package, and a line segment connecting corners on both sides of the bottom and a line segment connecting both sides of the corner formed by the fusing seal are in a torsional positional relationship ;
One or both of the corners of the bottom sides of the package or the one or both of the sides of the corner portion formed by heat-sealing the opening of the package, and one only on the top surface of the material to be packaged, And a step of heat shrinking the package so as to leave only one under the lower surface of the packaged object, or one protruding protrusion on the upper surface and one lower surface. Packaging method. The packaging method according to claim 4 ,
The packaging method, wherein the breaking portion is formed in a line substantially parallel to the bottom of the packaging body or in the vicinity of the opening fusing portion. The packaging method according to claim 4 or 5,
  The step of inserting the article to be packaged from the opening into the package body includes inserting the article to be packaged so as to intersect the bottom of the package, and in the inserted state, corners on both sides of the bottom of the package. A packaging method, characterized in that the distance from one side of the package to the packaged object is made longer than the distance from the other corner to the packaged object. The packaging method according to claim 4 or 5,
  The step of inserting the article to be packaged from the opening into the package body is such that the article to be packaged intersects the fusing part of the opening formed by a fusing seal in a subsequent step, and The article to be packaged is inserted so that a distance from one of the corners on both sides of the fusing part of the opening to the article to be packaged is longer than a distance from the other corner to the article to be packaged. Packaging method.

Images