JPH06537B2 - Packaging method and device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging method and an apparatus therefor, and more specifically, packaging capable of tightly packing the size of an item (for example, the length of the item). The present invention relates to a method and an apparatus thereof.

2. Description of the Related Art Conventionally, while continuously transferring a packaging material, both end edges are bent to form a tubular body, and the article is inserted into the tubular body at regular intervals, and then the packaging material is placed between the article and the article. A packaging method is known in which individual packages are continuously produced by sealing and cutting the material in a direction perpendicular to the transport direction.

According to this packaging method, however, when the packaging material is smoothly sealed in the vicinity of the product during the sealing work, the product comes into contact with the side surface of the heat-sealed body and the smooth sealing work is performed. Is impossible. Therefore, the seal timing must be set at a position relatively distant from the product, but as a result, there is an excess part of the packaging material on both sides of each product (package), and the formed bag body has There was a spatial dullness inside, and the appearance and other appearances were poor, reducing the commercial value. In addition, for example, when packing in a box or packing a certain number of pieces for overwrapping, etc., the size of the box and other packaging materials must be increased corresponding to the above-mentioned surplus portion, and the packaging cost for collective packaging It is also pointed out that there are drawbacks such as rise in.

OBJECT OF THE INVENTION The present invention has been devised to solve the above-mentioned various problems, and performs tight packaging corresponding to the size of the product to obtain a good-looking packaged product, and at the time of collective packaging. It is an object of the present invention to provide a packaging method and an apparatus therefor which can effectively realize space saving and packaging cost reduction.

Means for Solving the Problems In order to overcome the above-mentioned problems and achieve the intended purpose, the packaging method according to the present invention provides a gusset fold on both sides before and after sandwiching an article filled in a tubular body, The folded portion is partially sealed in a direction orthogonal to the feeding direction of the cylindrical body and cut to form an ear portion, and the corresponding ear portion is adhered to both end surfaces of the obtained packaging bag. A packaging method for sticking to a container, wherein the transfer direction of the packaging bag having the ears is horizontally set at 90 ° C.
The step of changing the direction, and by pressing the vicinity of the product at both ends of the packaging bag from above and below by a pair of heated sealing bodies to bring the two sealing surfaces into contact with each other, the partially sealed ears A step of sealing the entire part to form an ear-shaped seal part, and by detecting the arrival of the packaging bag, one bag end surface of the packaging bag is bonded to the lower side sandwiching the ear-shaped seal part. Apply the adhesive, and apply the adhesive to the other bag end face with the ear-shaped seal part sandwiched between them, and a pair of heated bending means, one from the top to the bottom and the other from the bottom to the top. A step of bending the ear-shaped seal portions in mutually different directions along the end surface of the bag coated with the adhesive and integrally adhering to the end surface by moving the end surfaces of the packaging bag in a pair. Conveying while holding the clamping pressure with the conveyor belt Then, a step of closely shaping the ear-shaped seal portion on both end surfaces of the article is performed.

Further, in order to preferably carry out the above-mentioned method, a packaging apparatus according to another invention of the present application is, on both sides sandwiching a feeding path of a cylindrical body filled with goods at a predetermined interval, in the feeding direction of the cylindrical body. A pair of gusset claws that can move toward and away from each other in a direction orthogonal to each other are provided, and when both gusset claws are moved toward each other toward the tubular body, both side surfaces of the tubular body are directed toward the center of the feeding path. The gusset device that folds the gusset inwardly and the part of the tubular body facing between the articles is partially sealed and cut in a direction orthogonal to the feeding direction of the tubular body. In a packaging apparatus including an end-seal device for forming individual packaging bags, a pair of heat-sealing bodies, which are arranged in a vertical relationship on both sides along the transfer direction of the packaging bag, are close to each other. And a packaging bag that can be separated and moved freely The vicinity of the item at both ends is pinched by a pair of heat-sealing members from above and below to bring the two sealing surfaces into contact with each other, thereby completely sealing the partially-sealed ears to form the ears-like sealing part. A sealing and sealing device to be formed, is arranged to face the end surface of the packaging bag on which each ear-like seal portion is formed, and operates at the timing when the arrival of the packaging bag is detected by the detection means, and at one bag end surface, An adhesive applying device that applies an adhesive on the lower side of the ear-shaped seal part and an adhesive on the upper side of the ear-shaped seal part on the other bag end face, and on both sides along the transfer direction of the packaging bag. , A pair of bent bodies provided with a heating means, one of the bent bodies moving downward from above, and the other bent body moving downward from above, thereby performing a synchronous motion, Ear-shaped seal part A fold forming device that bends in different directions along the end surface of the packaging bag to which the adhesive is applied and that integrally bonds to the end surface of each ear-shaped seal portion, and in the transfer direction of the packaging bag. A pair of conveyor belts are arranged so as to be able to travel so as to oppose each other along the both sides, and the packaging bag is conveyed while holding both end surfaces of the pasted packaging bag with a pair of conveyor belts. The present invention is characterized in that the ear-shaped seal portion is configured by a conveying device that closely shapes both ends of the article.

Example Next, the packaging method according to the present invention will be described below in detail with reference to the accompanying drawings, in connection with an apparatus capable of suitably implementing the packaging method, with reference to a preferred example.

FIG. 1 is a perspective view showing a schematic configuration of an apparatus according to one embodiment for carrying out the packaging method according to the present invention, FIG. 2 is a perspective view of a heat-sealing body used in the apparatus, and FIG. a) to (f)
FIG. 4 is an explanatory view showing the packaging process over time when the method of the present invention is carried out by the apparatus shown in FIG. 1, FIG. 4 is a perspective view of a package obtained by the method of the present invention, and FIG. 4 is a sectional view taken along line AA of FIG.

The structure of an example of an apparatus for carrying out the method according to the present invention will be described. In the apparatus shown in FIG. 1 as a preferred embodiment, both side surfaces of a tubular body F filled with articles W at predetermined intervals are A gusset device 2 for performing gusset folding by folding inward toward the center of the feeding path of F, and a portion of the tubular body F located between the articles W and the articles W is partially sealed (16 ) And cutting the individual packaging bag F ₁
And the resulting packaging bag F ₁
Sealing device 20 for completely sealing (23) both ends of each
When a bonding agent applying device 26 for applying adhesive (29) on both end surfaces of the packaging bag F _1, folding the entire sealing portion 23 at the end surfaces of the packaging bag F ₁ and along a shape of the article W ( And a bending and forming device 32 for performing bonding),
A case will be mainly described in which the article W is basically formed of a carrier device 36, and in this embodiment, the article W is rectangular and tightly packed with respect to the longitudinal length of the article W.

First, the gusset device 2 is arranged on both sides of the feeding path of the tubular body F and has a pair of U-shapes that move toward and away from each other in a direction orthogonal to the feeding direction of the tubular body F. Of the gusset claws 4 and 4 that form the inside of the tubular body F filled with the article W, that is, both side surfaces between the articles W from the outside to the inside with the gusset claws 4 and 4. The gussets 6 are formed on the side surfaces of both ends of the tubular body F by being folded.

The end seal device 8 includes a pair of rotary heating seal bodies 10, 1 arranged vertically at a right angle to the feeding direction of the tubular body F.
This seal body 10 has a built-in heater and a cutting means. In addition, as shown in FIG. 2, a predetermined number of concave grooves 14 are provided at appropriate intervals on the sealing surface 12 of each heat-sealing body 10. Heat-sealed body 10, 10 having the sealing surface 12 configured as described above
Thus, when the intermediate portion between the articles W in the packaging bag F ₁ is sealed and cut, the partial seals 16 are provided at both ends of the packaging bag, and the ears 18 formed by the overlapping portions of the upper and lower packaging materials are formed. The packed packaging bag F ₁ is obtained.

The sealing / sealing device 20 is composed of a pair of heat-sealing members 22, 22 arranged in a vertical relationship on both sides along the transfer direction of the packaging bag F ₁ , respectively.
Has a built-in heater for heating. Then, by moving the respective heat-sealing members 22 so as to face each other up and down, and bringing the opposite sealing surfaces into contact with each other, the vicinity of the item W (item to be packaged) at both ends of the packaging bag F ₁ is The entire surface including the partially sealed portion 16 is sealed (23), thereby forming the ear-shaped seal portion 24.

An adhesive application device 26 is arranged on the downstream side of the sealing device 20. The adhesive applying apparatus 26 includes a pair of nozzles 28, 28 disposed in along connexion sides the transport direction of the packaging bag F _1, packaging bag F ₁ by the nozzle 28
The adhesive 29 is applied to both end surfaces of the (see FIG. 3 (c)).

Also in the vertical position of the transporting direction of the packaging bag F _1, have detection sensor 30 composed of a pair of the light emitting element 30a and the light receiving element 30b is disposed, so as to detect the arrival of the packaging bag F ₁ There is. The detection signal output from the sensor 30 upon detection of arrival of the packaging bag F ₁ is processed by an appropriate electric control circuit (not shown). Then, the adhesive application device 26 is set to operate by this detection signal.

On the downstream side of the adhesive applying device 26, a pair of folding bodies 34 arranged on both sides along the transfer direction of the packaging bag F ₁ ,
A bend forming device 32 constituted by 34 is provided. The bent bodies 34, 34 also have a built-in heater for heating, so that one bent body 34 moves downward from above and the other bent body 34 performs a synchronous motion of moving from below to above. . By this synchronous movement, the ear-shaped seal portions 24 are respectively folded on the end surface side of the packaging bag to which the adhesive 29 is applied, and are integrally bonded to the corresponding end surfaces.

Further, on the downstream side of the folding device 32, a carrying device 36 is provided.
Is provided. The carrying device 36 comprises a carrying belt 40 rotatably stretched around a pair of spaced apart pulleys 38, 38 which rotate around a vertical axis. The carrying belts 40, 40 are on both sides in the carrying direction of the packaging bag F _1. along opposite to the pair disposed, as shown in FIG. 1, and performs the transfer of the packing bag F ₁ while sandwiching the both end surfaces of the packaging bag F ₁ completing the lamination.

Operation of Embodiment Next, a case where the packaging method according to the present invention is carried out by using the apparatus configured as described above will be described. In FIG. 1, when the tubular body F arrives at the end seal device 8, the gusset claws 4 and 4 of the gusset device 2 advance in a direction in which they approach each other, and the article W and the article W of the tubular body F are separated from each other. Both side surfaces of the intermediate space portion are folded inward to form predetermined gussets 6 and 6. Further, when the end seal device 8 is activated and the tubular body F is completely sandwiched by the seal bodies 10 (sealing state), the folding is completed. Then, the gusset claws 4 and 4 are separated and retracted to their original positions to obtain the packaging bag F ₁ in which the gussets 6 and 6 are formed and the partial seal 16 is applied (see FIG. 3 (a)).

After that, the packaging bag F _{1 in} which the articles W are individually stored is transferred to the sealing and sealing device 20 arranged on the downstream side after the direction of 90 ° C. is changed horizontally with respect to the transfer direction as shown in FIG. In this sealing / sealing device 20, the two end ears 18, 18 of the transferred packaging bag F ₁ are squeezed by a pair of upper and lower heat-sealing members 22, 22 near the article W, respectively, and the partial seals 16, 16 are provided. Full seal including (23)
And thereby forming the ear-shaped seal portions 24, 24 (see FIG. 3 (b)).

Then, the optical axis is formed between the light emitting element 30a and the light receiving element 30b in the sensor 30, by the blocking packaging bag F _1, the arrival of the packing bag F ₁ is detected, the adhesive on the basis of the detection signal The applicator 26 operates to apply the adhesive 29 to both end faces of the packaging bag F ₁ through the nozzles 28, 28 (see FIG. 3 (c)). The adhesive 29 is applied to the upper side of the ear-shaped seal portion 24 on one end surface of the packaging bag F ₁ , and the ear-shaped seal portion 24 on the other end surface thereof.
Applied on the underside. In addition, the folding bodies 34, 34 in the folding and forming device 32, which have built-in heaters for heating, respectively, move up and down to fold one ear-shaped seal portion 24 of the packaging bag F ₁ upward and to open the other ear-shaped seal portion 24. Fold it down. As a result, each ear-shaped seal portion 24
Is securely bonded to the end surface of the packaging bag F ₁ by the already applied adhesive 29 (see FIG. 3 (d)).

Then, the pair of conveyor belts 40, 40 convey the packaging bag F ₁ while holding both end faces thereof under pressure, and the ear-shaped seal portions 24, 24 are in close contact with both end faces of the article W during the conveyance. At the same time, the product W is finished and shaped into a square along the outer shape (see FIG. 3 (e)). As a result, as shown in FIGS. 4 and 5, the ear-like seal portions 24 are attached to both end surfaces of the packaging bag F ₁ and the packaging body P in which the goods W are tightly enclosed is obtained. The package P obtained in this manner is conveyed to a predetermined processing location such as a boxing process or an overwrapping process (see FIG. 3 (f)).

FIG. 6 shows an example of an assembled state in which a predetermined number of the above-mentioned packages P are stacked and packed in a box or other overwrapping. That is, by bringing the end surfaces of the ear-shaped seal portion 24 of the packaging body P that are in different bending directions into contact with each other, a plurality of packaging bodies P can be formed without forming a gap between the adjacent packaging bodies P.
Can be compactly assembled. Moreover, the package P
It will be appreciated that since the product W is tightly enclosed in the package, the packing of the package P is refreshed and stable.

Although the nozzle ejection method has been described in this embodiment as the adhesive application means, a roller method, a spray method, or the like can be used as appropriate.

As the adhesive, hot melt, cold glue, a combination of these, and the like can be preferably used. As the application pattern of the adhesive, a dot shape, a line shape, or the like can be appropriately used.

Further, in the present embodiment, the type of the end seal device driven by the rotation system has been described, but other types such as a vertical movement system and a box motion system can also be used.

Further, although the end seal device incorporating the cutting means has been described, the seal device and the cutting device may be separately provided.

Further, as for the sealing and sealing device and / or the bending and forming device, the type which is driven by the vertical movement system has been described, but a device such as a box motion type or a vertical swinging open / close type can also be used.

Further, in the present embodiment, an example has been described in which the sealing and sealing device 20, the adhesive applying device 26, the fold forming device 32, and the conveying device 36 are sequentially arranged in parallel with respect to the feeding direction of the tubular body F. The devices 20, 26, 32, 36 may be sequentially arranged at right angles to the feeding direction of the tubular body F.

EFFECTS OF THE INVENTION According to the packaging method and the apparatus therefor of the present invention, it is possible to perform tight packaging in the lengthwise direction of the product, and it is possible to make a packaged product that looks good and the product value is significantly improved. To do. In addition, since the pair of heated seal bodies clamps the vicinity of the product at both ends of the packaging bag from above and below, it is possible to seal the air inside the bag while exhausting the air from the non-sealing part of the ear. It is possible to obtain a package having high tightness and close contact. Further, by bending the ear-like seal portion by the heated bending means, the ear-like seal portion can be easily bent, and the adhesive action of the adhesive and the heating action are combined to secure the seal portion to the bag end face. Lamination is done.

Furthermore, since the two ear-shaped seal portions of the packaging bag are bent in mutually different directions, when the predetermined number of packages are collected and packed in a box or other overwrapping, the end faces of the ear-shaped seal portions having different folding directions are different from each other. By assembling the packages so as to contact with each other, the aggregate of the packages becomes extremely compact, and the packing form is neat and stable. Therefore, there is an advantage that space saving and packaging cost reduction can be effectively realized in collective packaging.

[Brief description of drawings]

FIG. 1 is a perspective view showing a schematic configuration of a packaging apparatus as one embodiment for carrying out the packaging method according to the present invention, FIG. 2 is a perspective view of a heat-sealing body, and FIGS. 3 (a) to 3 (f). ) Is an explanatory view showing each step over time when the method according to FIG. 1 is carried out, FIG. 4 is a perspective view of a package obtained by the method according to the present invention, and FIG. FIG. 6 is a cross-sectional view taken along the line AA, and FIG. 6 is a perspective view showing an assembled state of the package obtained by the method according to the present invention.

Claims (2)

[Claims] 1. A gusset fold is made on both sides before and after sandwiching an article filled in a tubular body, and the fold-in portion is partially sealed in a direction orthogonal to the feeding direction of the tubular body. A wrapping method in which the ears are formed by cutting and the corresponding ears are closely adhered to both end surfaces of the obtained packaging bag, and the transfer direction of the packaging bag in which the ears are formed is horizontal. 90 ° C
The step of changing the direction, and by pressing the vicinity of the product at both ends of the packaging bag from above and below by a pair of heated sealing bodies to bring the two sealing surfaces into contact with each other, the partially sealed ears A step of sealing the entire part to form an ear-shaped seal part, and by detecting the arrival of the packaging bag, one bag end surface of the packaging bag is bonded to the lower side sandwiching the ear-shaped seal part. Apply the adhesive, and apply the adhesive to the other bag end face with the ear-shaped seal part sandwiched between them, and a pair of heated bending means, one from the top to the bottom and the other from the bottom to the top. A step of bending the ear-shaped seal portions in mutually different directions along the end surface of the bag coated with the adhesive and integrally adhering to the end surface by moving the end surfaces of the packaging bag in a pair. Conveying while holding the clamping pressure with the conveyor belt And a step of closely shaping the ear-shaped seal portion on both end surfaces of the article. 2. A pair of gusset claws, which are movable toward and away from each other in a direction orthogonal to a feeding direction of the tubular body, on both sides of the feeding path of the tubular body filled with the articles at predetermined intervals. ,
A gusset device that performs gusset folding by folding both side surfaces of the tubular body inward toward the center of the feeding path when the two gusset claws are moved toward each other toward the tubular body; A package including an end-seal device that partially seals a portion of the cylindrical body that faces between the articles in a direction orthogonal to the feeding direction of the tubular body and cuts to form individual packaging bags. In the device, on both sides along the transfer direction of the packaging bag, a pair of heat-sealing members respectively arranged in an upper and lower relationship are provided so as to be movable toward and away from each other, and the vicinity of the product at both ends of the packaging bag is provided. A sealing and sealing device that presses from above and below by a pair of heat-sealing members to bring both sealing surfaces into contact with each other, thereby sealing the partially-sealed ears entirely to form ears-shaped seals, Each of the packaging bags It is arranged so as to face the end face on which the ring-shaped seal part is formed, and operates at the timing when the arrival of the packaging bag is detected by the detection means, and at one bag end face, adhesive is applied to the lower side sandwiching the ear-shaped seal part. On the other end face of the bag, an adhesive applicator that applies an adhesive to the upper side of the ear-like seal portion is sandwiched, and a pair of bent bodies provided with heating means on both sides along the transfer direction of the packaging bag. , One of the folded bodies moves downward from above, and the other folded body moves upward from below to perform a synchronous movement, so that the binaural seal portions are covered with an adhesive-coated packaging bag. Bending and forming device that bends in different directions along the end face of the bag and integrally attaches to the end face of each ear-shaped seal part, and can be run opposite to both sides along the transfer direction of the packaging bag. Located in Conveying the packaging bag, which is equipped with a pair of conveyor belts, while sandwiching and holding both end surfaces of the laminated packaging bag with a pair of conveyor belts, and closely shaping the ear-like seal portion to both ends of the product. A packaging device characterized by being configured with a device.