JP3244972U - sealed package - Google Patents

Abstract

An object of the present invention is to obtain a sealed package in which when the packaging bag is torn open with the force of fingers, the packaging bag is less likely to be separated from a main body portion containing an object to be packaged and to be removed.
[Solution] A sealed package 1 is made by welding a band-shaped packaging film by overlapping both edges in the width direction of the packaging film in the shape of palms together to form a cylindrical film 5. A front side portion of the other end of the sealed cylindrical film 5 that is overlapped for sealing. 2f and the back side portion 2g are sealed in a state where they are offset in the width direction and in mutually opposite directions.
[Selection diagram] Figure 7

Description

The present invention relates to a sealed package in which candy, chocolate, etc. are placed one by one in a plastic film packaging bag and sealed.

Conventionally, packaged items such as candy are often sold individually wrapped in pillow-shaped packaging bags made of plastic film, and in such sealed packages, there are notches in the upper and lower seals of the packaging bag. The bag is generally opened by tearing the bag from this part using the force of the hands and fingers.

Japanese Patent Application Publication No. 2001-055248

However, when opened in this way, the packaging bag is torn diagonally from the notch toward the right or left edge of the bag, resulting in an opening at the corner, as shown in FIG. 7 of Patent Document 1, for example. tamper-removal pieces are likely to occur at the same time as they are formed. In that case, not only does it take time and effort to widen the opening to take out the packaged item, but the tamper-removal pieces are easily scattered because they are separated from the sealed package, and it is difficult to clean up the tamper-removed pieces. It takes time and effort. In particular, recently there has been a demand for recycling of plastic waste, and it is necessary to appropriately dispose of used bags and unsealed pieces.

The present invention has been made in view of these conventional problems. An object of the present invention is to obtain a sealed package that is difficult to separate into a part containing an object to be packaged and a piece to be removed when the bag is torn open with the force of the fingers.

Effects of means and ideas for solving problems

The sealed package according to the first aspect of the present invention includes a band-shaped packaging film that can be cut in a straight line in a direction inclined at a predetermined angle with respect to the longitudinal direction, and a sealing area along the left and right edges extending in the longitudinal direction. It can be configured such that a cylindrical film is formed by overlapping and welding the cylindrical films in a clasped shape, the object to be packaged is accommodated inside the cylindrical film, and both ends of the cylindrical film are sealed respectively. With the above configuration, when the packaging bag is torn open with the force of the fingers, it is possible to obtain a sealed package in which the packaging bag is less likely to be separated from the main body portion containing the packaged object, and the sealed package is less likely to be removed. Even if the body is a packaged item such as candy, the packaging bag can be easily disposed of after being opened.

The sealed package according to the second aspect of the present invention is a packaging film formed in a rectangular shape consisting of left and right parallel sides and front and rear parallel sides, and which has a straight-line cut property in parallel to the left and right sides. The piece is tilted at a predetermined angle with respect to the left and right sides, and is folded back along a folding line passing through the center of the film piece, so that the parts to be sealed along the left and right sides are overlapped, and the overlapped parts to be sealed are welded. It can be configured such that an object to be packaged is housed inside a cylindrical film formed into a cylindrical shape, and both ends of the cylindrical film are sealed. With the above configuration, the strip-shaped uniaxially stretched film that is generally sent out from the film forming machine has straight-line cutting properties in its longitudinal direction, so it is relatively easy to obtain raw rolls that are used as materials for packaging film pieces. . Furthermore, the amount of plastic film wasted during the process of forming the raw roll 12 and the packaging process can be kept to a minimum.

A sealed package according to a third aspect of the present invention is provided by forming a cylindrical film by welding a band-shaped packaging film by overlapping both edges in the width direction of the packaging film in the shape of palms together. A packaged object is housed inside the cylindrical film, one end of the cylindrical film is sealed, and the front side and back side of the other end of the cylindrical film with the one end sealed are overlapped for sealing. It can be configured such that the parts are sealed in a state where they are shifted in the width direction and in mutually opposite directions. With the above configuration, the direction of straight line cutting is opposite in the front side and the back side, which are divided into the front and back parts with the seal part at the end of the packaging bag as a border, so that the direction of the straight cut property is opposite to that in the part where the packaging bag accommodates the object to be packaged. It is possible to obtain a sealed package that is difficult to separate into pieces that are opened and removed.

FIG. 1 is an explanatory diagram of a sealed package according to a first embodiment of the present invention. It is an explanatory view of a film piece and a cylindrical film for forming a packaging bag of a sealed package concerning a second embodiment of the present invention. FIG. 2 is a schematic front view of a sealed packaging machine for manufacturing sealed packages. 4 is a schematic right side view of the sealed packaging machine shown in FIG. 3. FIG. FIG. 3 is a schematic right side view of seal portions at both ends of the cylindrical film. It is an explanatory view of a cylindrical film formation part. It is an explanatory view of a sealed package concerning a third embodiment of the present invention.

Embodiments of the present invention will be described below based on the drawings. However, the embodiments shown below illustrate sealed packages for embodying the technical idea of the present invention, and the present invention does not specify them as follows. Moreover, this specification does not in any way specify the members shown in the claims to the members of the embodiments. In particular, the dimensions, materials, shapes, relative arrangements, etc. of the components described in the embodiments are not intended to limit the scope of the present invention, and are merely illustrative, unless otherwise specified. Just an example. Note that the sizes, positional relationships, etc. of members shown in each drawing may be exaggerated for clarity of explanation. Furthermore, in the following description, the same names and symbols indicate the same or homogeneous members, and detailed descriptions will be omitted as appropriate. Furthermore, each element constituting the present invention may be configured so that multiple elements are made of the same member so that one member serves as multiple elements, or conversely, the function of one member may be performed by multiple members. It can also be accomplished by sharing.
(First embodiment)

In FIG. 1, (A) is a plan view of the sealed package 1, (B) is a plan view showing the sealed package 1 shown in (A) in an unsealed state, and (C) is a perspective view of the packaged object 3. The sealed package 1 consists of a pillow-shaped packaging bag 2 and a packaged object 3 housed in the packaging bag 2. The packaging bag 2 has a seal portion 2a extending in the longitudinal direction of its body, a notch portion 2b and a seal portion 2c on both upper and lower sides. The body of the packaging bag 2 is made by welding a band-shaped packaging film that can be cut in a straight line in a direction inclined at a predetermined angle with respect to the longitudinal direction by overlapping the parts to be sealed along the left and right edges in a palm-like manner. The seal portion 2a is a portion to which the portion to be sealed is welded when forming the cylindrical film 5, and the seal portion 2c and notch portion 2b are the portions of the cylindrical film 5. It is formed by welding and cutting the front and back of the packaged object 3 housed in the container 5. For example, as disclosed in Japanese Unexamined Patent Application Publication No. 11-348914, this sealed packaging body 1 transports the packaged items 3 while sequentially aligning them in a line. It is wrapped in a cylindrical shape using a band-shaped packaging film, and the edges of the overlapping palms are welded to form a cylindrical film.The packaging film portions of this cylindrical film before and after the packaged object 3 are sequentially melted and cut. By doing this, it is possible to form the package using a sealed packaging machine that packages each packaged item 3 in a sealed state. In this embodiment, the packaged object 3 is candy.
(Second embodiment)

In FIG. 2, (A) is a developed view of the packaging film piece 4 that is the material of the packaging bag 2 of the sealed package 1 according to the second embodiment of the present invention, and (B) is the packaging film piece shown in (A). 4 is a perspective view of a cylindrical film 5 formed into a cylindrical shape and an object to be packaged 3. FIG. The sealed package 1 is made by forming a packaging film piece 4 shown in FIG. 2(A) into a cylindrical film 5 shown in FIG. This is different from the first embodiment of the present invention in that it is formed by later sealing both ends of the cylindrical film 5 and cutting it.

The packaging film piece 4 has a rectangular shape consisting of left and right sides 4a that are parallel to each other and front and rear sides 4b that are parallel to each other, and can be cut in a straight line in a direction parallel to the left and right sides 4a. It is. The material of this packaging film piece 4 is a laminated film in which a heat-fusible film is laminated on a uniaxially stretched polyolefin film, and it is easily torn along the dashed line shown in FIG. 2. The packaging film piece 4 may be a plastic film with metal vapor-deposited or a metal foil laminated as long as it can be cut in a straight line.

The cylindrical film 5 is produced by folding the packaging film piece 4 along the folding line 4c that is inclined at a predetermined angle with respect to the left and right sides 4a and passing through the center of the film piece 4, so that the packaging film piece 4 near the left and right sides 4a is folded back. The parts 4d to be sealed, which are indicated by hatched lines in FIG. 2(a), are overlapped in the shape of palms together, and the parts 4d to be sealed are welded to form a cylindrical shape. In this embodiment, the front and rear sides 4b of the packaging film piece 4 intersect perpendicularly to the folding line 4c so that no displacement occurs in the front and rear directions after folding.

If the inclination angle of the folding line 4c with respect to the left and right sides 4a is too small, the width of the tear portion 2e of the packaging bag 2 at the upper edge of the lower seal portion 2c will become narrower, and the tear portion 2e will become larger than the main body portion 2d. If it is too large, it becomes difficult to open the sealed package 1, so it may vary depending on the specifications of the packaging bag 2.

To open the sealed package 1, the packaging bag 2 is torn from the upper notch 2b through the seal 2c. At this time, the packaging bag 2 has a main body portion 2d containing the object to be packaged 3 and a tear portion 2e, as shown in FIG. 1(B). The packaging bag 2 can be disposed of after the object to be packaged 3 has been taken out, with the main body portion 2d and the tear portion 2e connected at the lower seal portion 2c.

3 to 6 show an example of a sealed packaging machine used to form the sealed package 1 of the present invention. This sealing packaging machine 10 includes a feeding section 13 that intermittently feeds out a band-shaped packaging film 11 that can be cut linearly in the longitudinal direction by predetermined lengths from an original fabric roll 12, and a feeding section 13 that intermittently feeds out a band-shaped packaging film 11 that can be cut linearly in the longitudinal direction by a predetermined length at a time. a cylindrical film forming section 15 that forms a cylindrical film 5 from the packaging film piece 4 cut by the cutting section 14; and a cylindrical film formed by the cylindrical film forming section 15. A cylindrical film holder 16 that deforms the shaped film 5 into a cylindrical shape capable of receiving the packaged object 3 and holds it releasably, and a moving part that can move the cylindrical film holder 16 to a predetermined operating position. 17, a packaged article supply section 18 that supplies the packaged articles 3 one by one onto the cylindrical film 5 held by the cylindrical film holding section 16 at the packaged article receiving position, and the packaged article receiving position. It receives the cylindrical film 5 containing the object 3 to be packaged and seals both ends of the cylindrical film 5 at the same time as forming a notch.

The cylindrical film forming section 15 sucks and holds the tip of the strip-shaped packaging film 11 fed out by the feeding section 13, which will become the packaging film piece 4, before it is cut by the cutting section 14. The packaging film piece 4 cut and formed as shown in FIG. It is folded back and the parts 4d to be sealed near the left and right sides 4a are overlapped, and the overlapped parts 4d to be sealed are thermally fused and sealed.

In FIG. 6, (A) is a cross-sectional view taken along the cutting line AA in FIG. It includes a pair of rotating bodies 24 that are rotatable about a shaft body 23, and a rotation drive unit 25 that rotates the pair of rotating bodies 24 in mutually opposite directions.

Next, a method of forming the sealed package 1 using the sealed packaging machine 10 will be explained. First, the belt-shaped packaging film 11 is fed out to a predetermined length from the original roll 12 by the feeding unit 13 . At this time, the pair of claws 26 of the cylindrical film holder 16 that can approach and separate from each other are closed as shown in FIG. The cylindrical film forming part 15 is tilted in a direction parallel to the folding line 4c of the film piece 4, and the cylindrical film forming part 15 opens a pair of rotating bodies 24 as shown in FIG. At the position shown by the solid line, the cylindrical film holder 16 is placed in the standby position shown by the solid line in FIGS. 3 and 4. Further, the band-shaped packaging film 11 has been cut in advance near its lower end by the cutting section 14, and the lower edge of the band-shaped packaging film 11, which is the cut end, is inclined at a predetermined angle with respect to the left and right edges. .

Next, the cylindrical film forming section 15 uses the negative pressure adsorption plate 22 to press the tip of the strip-shaped packaging film 11 extending downward from the cutting section 14, which will become the packaging film piece 4, as shown in FIG. 6(A). Adsorb as shown.

Next, the strip-shaped packaging film 11 is cut by the cutting unit 14 to form packaging film pieces 4.

Next, the cylindrical film forming section 15 is closed by rotating the pair of rotating bodies 24 by the rotating drive section 25 as shown in FIG. 6(B). As a result, the packaging film piece 4 is bent and folded back so that the center portion is inserted between the pair of shaft bodies 23, and the sealing portion 4d of the overlapping packaging film piece 4 is pinched by the pair of heaters 21. The cylindrical film 5 is formed by heat-sealing. At this time, the opposite side of the pinched portion of the cylindrical film 5 forms a loop as shown in FIG. 6(B). If necessary, in order to ensure that the center portion of the packaging film piece 4 enters between the pair of shaft bodies 23 when folding the packaging film piece 4, the packaging film piece 4 may be inserted from the top to the bottom in FIG. 6(A). Compressed air may be blown onto the central portion of the film piece 4.

Next, the moving section 17 advances the cylindrical film holding section 16 to the position shown by the two-dot chain line in FIG. Thereby, the claws 26 that are close together are inserted into the looped portion of the tubular film. Thereafter, the cylindrical film forming section 15 reversely operates the rotary drive section 25 to open the pair of rotary bodies 24 as shown in FIG. Stop the adsorption in step 4. In this embodiment, the rotation drive unit 25 closes the pair of rotation bodies 24 and automatically operates in reverse after a predetermined period of time has elapsed. When the pair of rotating bodies 24 are opened, the cylindrical film holding section 16 opens the pair of claws 26 as shown in FIGS. 5 and 6(C) to hold the cylindrical film 5.

Next, the moving part 17 takes the position shown by the two-dot chain line in FIG. 3, and raises the cylindrical film holding part 16 so that the cylindrical film 5 and the pair of claws 26 face vertically as shown in FIG. The cylindrical film 5 is attached to the packaged object receiving position.

Next, the packaged article supply section 18 drops the packaged article 3 into the cylindrical film 5. The fallen object 3 is supported inside the cylindrical film 5 by the upper end of the support rod 28 of the cylindrical film holder 16, as shown in FIG.

Next, the both end seal portion 19 advances the pair of holding arms 27 to the position shown by the two-dot chain line in FIG.

Next, the moving unit 17 retreats the cylindrical film holding unit 16 to the cylindrical film release position shown by the two-dot chain line in FIG. As a result, the pair of claws 26 are pulled out from the cylindrical film 5, and the cylindrical film 5 and the packaged object 3 are released.

Next, after retracting the pair of holding arms 27 to the position shown by the solid line in FIG. 5, the both end sealing section 19 seals the upper and lower ends of the cylindrical film 5 and cuts it to form a notch. The moving section 17 tilts the cylindrical film holder 16 as shown by the solid line in FIG. 4, and then moves to the position shown by the solid line in FIG. 3, thereby placing the cylindrical film holder 16 in the standby position. This completes the sealed packaging of one packaged object 3. Then, the seal packaging machine 1 repeats the above-described series of operations for each article 3 to be packaged.

According to the present invention, the packaging bag 2 has both upper and lower ends of the cylindrical film 5, for example, as shown in FIG. It may be sealed by being pressed in a direction perpendicular to the direction connecting the folding line 4c and the palm-shaped seal portion 2a. Further, the cylindrical film 5 may be made by decoratively cutting the palm-shaped sealed portion 2a parallel to the folding line, and the packaging film piece 4 may have a cylindrical shape near the left and right sides. Before forming the film 5, the portion 4d to be sealed may be cut out, for example, along the cutting line 4e shown by the two-dot chain line in FIG. 2(A) so that the edge thereof is parallel to the folding line 4c.

In addition, in the first embodiment, when obtaining a band-shaped packaging film having straight cutability in a direction inclined at a predetermined angle with respect to the longitudinal direction from a uniaxially stretched film having straight cutability in the longitudinal direction, and in the second embodiment, When forming a cylindrical film from pieces of packaging film, relatively many cut pieces of packaging film are generated that are not used as packaging bags. Since it can be recycled, resources are not wasted.
(Third embodiment)

In FIG. 7, (A) is a perspective view of a sealed package 1 according to a third embodiment of the present invention. As shown in FIG. 7(B), this sealed package 1 accommodates the packaged object 3 inside, and overlaps the other end of the cylindrical film 5 with one end sealed for sealing. This embodiment differs from each of the above-described embodiments in that the front side portion 2f and the back side portion 2g are sealed in a state where they are shifted in the width direction and in mutually opposite directions as shown in FIG. 7(C).

The cylindrical film 5 is formed by overlapping and welding both edges in the width direction of a wide band-shaped film 11 that can be cut linearly in the longitudinal direction in a palm-lap shape. In FIG. 7, the dashed line indicates the direction in which the film can be easily cut.

To shift the other end of the cylindrical film 5 from each other, for example, pinch the front side portion 2f and back side portion 2g of the other end with your thumb and index finger, and press the thumb and index finger together as shown in FIG. 7(C). There is a method of moving the thumb and index finger in opposite directions as shown by the arrows, and it is better to use a device that automates this movement of the thumb and index finger.

1... Sealed package 2... Packaging bag; 2a... Seal part; 2b... Notch part; 2c... Seal part; 2d... Main body part; 2e... Tear part; 2f... Front side part; 2g... Back side part 3... Item to be packaged 4 ... Packaging film piece; 4a... Left and right sides; 4b... Front and rear sides; 4c... Folding line; 4d... Area to be sealed; 4e... Cutting line 5... Cylindrical film 10... Sealing packaging machine 11... Band-shaped packaging film 12... Original fabric roll 13... Feeding part 14... Cutting part 15... Tubular film forming part 16... Tubular film holding part 17... Moving part 18... To be packaged supply part 19... Both ends sealing part 21... Heater 22... Negative pressure Adsorption plate 23...Shaft body 24...Rotating body 25...Rotating drive unit 26...Claw 27...Holding arm 28...Support rod

Claims (3)

A band-shaped packaging film that can be cut in a straight line at a predetermined angle with respect to the longitudinal direction is welded by overlapping the sealing areas along the left and right edges extending in the longitudinal direction in a clasped shape to form a cylindrical film. A sealed package formed by forming a cylindrical film, accommodating an object to be packaged inside the cylindrical film, and sealing both ends of the cylindrical film. A piece of packaging film formed in a rectangular shape consisting of left and right parallel sides and front and rear parallel sides and capable of being cut in a straight line parallel to the left and right sides is tilted at a predetermined angle with respect to the left and right sides. At the same time, the film piece is folded along a folding line passing through the center of the film piece, and the parts to be sealed along the left and right sides are overlapped, and the overlapped parts to be sealed are welded to form a cylindrical shape.Inside the cylindrical film, A hermetically sealed package containing an object to be packaged and having both ends of the cylindrical film sealed. A cylindrical film is formed by overlapping both edges in the width direction of a band-shaped packaging film in the shape of palms together to form a cylindrical film, and the article to be packaged is housed inside the cylindrical film. One end of the cylindrical film is sealed, and the front side and back side of the other end of the cylindrical film with the one end sealed, which are overlapped for sealing, are shifted in the width direction and in opposite directions. A hermetically sealed package.

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