JP4128153B2 - Packaging bag manufacturing method - Google Patents

Description

The present invention, snacks, etc., bulky lightweight is most often used for the packaging of products, the vertical filling packaging machine used in the packaging called pillow type which is similar to the shape of the pillow based, a portion of this The present invention relates to a method for manufacturing a packaging bag in which the shape of a square-bottomed gusset type packaging bag that is filled and packaged by remodeling, replacing parts, attaching an attachment, and the like is further improved.

Conventionally, this kind of product, even friendly hygiene, moisture, ultraviolet light, oxygen and other also unitary synthetic resin film or the like corresponding to each object in order to prevent spoilage caused by, formed by combining plural laminated packaging The material is used, the bag size and shape are determined according to the sales price, content, etc., and this is designed to attract consumers' interest with illustrations and photos along with necessary items such as product names, raw materials used, and trader names. and was mounted on the packaging machine as a colorful winding shaped printed long, facing or overlapping twofold clad the predetermined width of the film both end faces to via formation after cylinder first rectangular tube with former, or envelopes a tubular heat sealed in a manner referred to as tension, while forward in the length of one bag of, a front width sandwiched by a heat sealer from around folding inward in the width direction equal intervals both sides held pressed A bottom seal is formed to form the bottom, and the top seal is placed on the top of the package to be dropped in the rectangular cylinder and the bottom seal is placed on the bottom of the next bag. A horizontal heater that incorporates a cutter that cuts and separates packaging bags that have been packaged , and then simultaneously heat-seal and separate them, and the packaging bags are sent to the next process, such as corrugated cardboard packaging. According to the bag size, etc., filling and packaging are repeated according to the packaging machine program set in the other, and production is performed.

However , the gusset type packaging has a very bad storage efficiency in the delivery container such as the cardboard case that the producer uses to pack and deliver a predetermined quantity unit to the dealer because of the shape of the pillow type packaging. or stacking it is can not be exhibited to independence, the problem of the degree is also low, such as to draw the attention of consumers to the extent that the exhibition in Motareai to the front support in the back is made, it has been made to some extent of improvement, still insufficient in, efforts to allow the exhibition which is self-supporting in the well-equipped appearance has also been made now.

As part of this , the corners of the square tube forming the barrel of the gusset bag are formed into a rectangular tube shape with a former, and the ridge line is pressed at room temperature or to some extent with a metal plate with irregularities. , stamped Yamasen, and engraved the valley achieve edging tetrahedral after square tube formation the object of the hot plate to give a Orikuse the corner of the square tube-shaped cylinder after square tube formation, or mounting a hot roller Then, you can use a method such as making a square and adjusting the finished shape of the packaging bag as much as possible, or going further and changing the width dimension of the front and back sides to about a few millimeters in the vertical direction, folding back and heating the front and back sides There is also an increasing number of forms referred to as hem with seals and adhesion, and crease-like formations . By this method , the shape of the body is considerably improved and the bottom is formed with a flat bottom, but there is a difference in the hardness of the packaging material, so it is difficult to maintain the shape of the bottom or to stand alone. And further improvement is awaited.

In addition, as a completely different method , there is a case in which preferential shapes are prioritized and products are packaged by purchasing a packaging bag made in advance by a supplier using a dedicated bag making machine. Although it can be considered for products with relatively high unit prices for packaging contents and high-mix low-volume production, it is common for mass-produced products to be filled and packaged from a take-up film mounted on a packaging machine in terms of cost and efficiency. is there.
Utility Model Registration No. 3094949 Japanese Patent Laid-Open No. 10-203538

Furthermore, at the lower part of each surface constituting the body portion of the vertical tubular tube with a hem in the vertical direction, a folding fold is first applied to the winding film, and then a rectangular tube is formed to provide a folding fold around the periphery. There is also a packaging bag in which the bottom is formed by heat-sealing and bonding a separately prepared film to the bottom of the lower end of each surface in order to form the bottom on the square tube with hem, Although this kind of product has been devised, it has become possible to obtain the expected shape, but the equipment is complicated in order to obtain the expected shape, and a dedicated bag making machine is required, increasing bag costs, filling packaging A decline in the efficiency of time is inevitable . This application aims at providing the manufacturing method of the packaging bag which can be filled and packaged based on the present packaging machine.

In order to achieve the above object, as means for realizing the production of the gusset type square bottom bag of the present invention, folding folds are attached in the vertical direction of each surface corner forming the body portion, and the folding folds are also formed at the lower end of the rectangular tube surface. Although an object of the present invention to perform the formation of with a flat bottom, the bottom of the moth zero Tsu door bag, referred to as a packaging bag with heme with the current of the folded folds, although the folds of the extension of the body portion is formed, The bottom seal is made in the center and the width dimension before and after it is made flat, and the folding folds are only on both sides and are parallel to the bottom surface, so that they are folded in a plane to form a flat bottom. In addition, the lower end of the front and rear surfaces is not particularly done because it is difficult to emphasize the cornering in a state where it is simply bent .

On the other hand , in the present application, when the folding fold G is formed in the vertical direction shown in FIGS. 8 and 9 on the four circumferences of the lower ends of the front , rear, left and right, it is newly added with the folding fold portion D of the trunk portion. interfere with each other who is attempting fold section G, and local tensile or become part occurs fit or worse wrinkles, if forcibly performed, pinholes and are likely to malfunction occurs in tear.

As a way to solve this, pre-folds the range generated hinder to perform addition the processing to the height of the fold portion provided around the lower end, the sealing of gas peptidase Ttotaipu is made at top seal portion in addition There is a part not related to the shape even if the part is not attached, and the range is considered according to the shape and size of the bag and is not attached to the unnecessary range . Thereby , the interference at the time of the above-described folding fold formation is eliminated . Flat bottom working bottom to perform together with the longitudinal direction of the folded creasing is packaging folds the bottom forming the lower end of the square tube forming a cylinder to form a square tube-shaped film, both the reference and pre-preliminarily folded the fold portion Formed, then heat-sealed to provide a full-fledged crease part, and a lift equipped with a crease attachment plate and a heat sealer to form a crease part of four circumferences in a predetermined dimension, while lowering the part together with the lift part of the crease part In addition to completing the formation, the contents are charged and filled, top sealed, and then cut. The packaged packaging bag is sent to the next process as described above, and the same cycle is repeated for the next packaging bag. as a result of the continuation of the production, enough shape're stable packaging bag efficiently it can be manufactured to be self-supporting during the exhibition of over-the-counter.

Or as described in detail, the final bag size that further improved packaging arrangement of gusset type which has improved several problems of pillow type packaging of other similar method be selected, or the like as appropriate to the packaging film It can be carried out relatively easily with a machine, and the method of the present invention is not limited to lightweight and bulky products, but can be used in a wide range of fields, enabling independent display with extremely high reliability, and among many similar products It is highly effective in increasing the level of attention and promoting sales.

Incidentally, the embodiments of the present invention has been described in the butt seam clad manner the back upholstery, choosing the position if envelope-clad type, Ki de also be carried out at the corner of the packaging bag, thus at the bottom seal portion formation of folds of the present invention for forming the bottom reduce the number of layers of packaging film even easier, exits from the bottom be adhered with a hot-melt or the like shaping or bottom so as to be parallel to the bottom of a conventional bottom seal portion In addition, what tends to be unstable is inevitably stored in the recess, so that the independence is stable, and storage efficiency when storing a predetermined amount in a distribution container for logistics. The shipping cost including mokama containers is also reduced, and the containers are stored in a neat shape in the container, so they are out of shape when they are put out of the container and displayed due to impact, vibration, etc. during distribution. But rather the shape is in place Effect also.

In addition, the production of the packaging bag of the present invention, but it is no better to be completely installed a new dedicated packaging machine at a cost, a conventional gusset vertical pillow packaging machine, which also used to enable you as a base Former, cylinder, etc. need to be replaced according to bag size, but it can be said that it can be realized at low cost by adding or replacing parts in the main part.

Next, embodiments of the invention, which are the same as those corresponding parts, figure intricate parts and that a substantially mesoscopic avoid line, there is a part where the mounting part is also over several views, FIGS. 1 to 13 This is explained as follows.

FIG. 1 and FIG. 2 are schematic perspective views of a vertical packaging filling machine for producing a packaging bag with creases formed around the trunk and lower bottom according to the present invention, and each surface of the trunk of the packaging bag shown below In FIG. 8, there is a degree of freedom in the ridgeline of FIG. 8, but as an example, a parallel folded fold D, and a flat folded bottom D ′ formed from the bottom to the top shown in FIG. In the form of a packaging machine that manufactures a packaging bag A formed by forming and applying a folding fold G in the direction, the main body is a packaging film B prepared in a wound form based on the dimensions determined according to the selling price and the weight of the contents As shown in FIG. 3 (X), the horizontal cross sections of X to X, Y to Y, and Z to Z in FIG. 1 are provided via a step roller 2 , a film feed roller 3 , and a guide roller 4. , Formed into a square cylinder shape by the former 5, and then the square cylinder cylinder 6 shown in (Y) In this embodiment, the predetermined widths at both ends of the packaging film B in a state of surrounding the periphery are described by facing palms, but the front and rear surfaces shown in FIG. When the wrapping film mounted on the wrapping machine is fed forward downward as the wrapping progresses, the folding crease guide 8 provided at a predetermined position above the square cylinder forming cylinder 6 While passing, it folds into a pleated shape with a predetermined size, presses in a shape that sandwiches the folded portion formed by the fold sealer 9 located under the fold sealer, heat seals, and the back heater J is simultaneously formed by the operation of the vertical heater 7, It is formed together with a direction fold D or D ′.

The rectangular tube C with the folds D or D 'turned back in the vertical direction and back-fitted J is further fed down and passes through the lower end of the square tube forming cylinder 6 to form the bottom and further feed down. The content product is filled, and the top seal E at the top and the bottom seal F at the bottom of the next bag are simultaneously heat-sealed and sealed with a horizontal heater 12 incorporating a cutter 11 in the middle . When the sealing by the horizontal heater 12 is completed, the packaging bag A, which is cut by operating the cutter 11 to complete the packaging of the product, is further lowered and sent to the next process such as packing in a cardboard case for delivery . In addition , the heat seal by the horizontal heater 12 is arranged above the horizontal heater 12 below the square cylinder forming cylinder 6, a bottom folding plate 13, also called a gusset tacker, and a gusset folding similarly arranged below the horizontal heater 12. The plate 14 is actuated so that the bottom of the next bag becomes a flat bottom just before the horizontal seal, and the generation of wrinkles or the like is prevented in the top seal portion of the packaging bag A filled with the content product. These series of operations previously film feed size standards dimension reference of the packaging bag A, the heaters, cutter actuation distance other operating components, timing, etc. Operation Ki not a preparative also Purokuramu set in advance packaging machine Is done.

The bottom bottom is formed as follows. When the predetermined operation is performed by the horizontal heater 12 described above, the bottom seal F follows the operation of the gusset bottom folding plate 13 at the bottom of the packaging bag, which is filled with the content product next. Since a flat bottom is formed at the bottom, a fold G is formed at this portion . The lower end of the bottom folds at that time is made to match the lower end of the rectangular tube forming the cylinder 6, M size 4 shown in While operating in a front view in detail in a side view so the same in a side view, which will be described later figures Vertical The N dimension of the part where the folds are folded in the direction indicates the length required to apply the bottom seal together with the top seal and the bottom at the top of the vertical fold, and M + N is the required pitch for one bag. In addition, there is a part that shows just before and after the operation while avoiding the complication of the lines of the figure in a part of the side view, but the front and rear bottom crease forming plate 15 and the right and left bottom folds shown in FIGS. The lift 18 equipped with the forming plate 16 and the bottom corner forming plate 17 cuts the packaging bag A that has been filled and packed with the product, then loads and descends it, sends it to the next process, and then raises it again. Raise to the lower end of cylinder forming cylinder 6 In FIG. 6, just before the upper surface abuts the upper surface in the state in which the width of the front and rear bottom crease forming plate 15 is reduced in (d) in FIG. Although the interval is widened, the bottom fold forming position is held at the lower end of the above-described bottom folded fold G, and the width is widened by attaching the left and right bottom fold forming plates 16 with a slight time difference between the front and rear bottom fold forming plates 15. The belt 18 is brought into contact with the inner surface of the square cylinder forming cylinder 6 and folded, and the feed belt 20 is driven to feed downward, and the lift 18 is lowered in synchronization with this.

At that time, when the bottom crease forming portion G descends and leaves the lower end of the square tube forming cylinder 6, the front and rear left and right bottom crease forming plates 15 and 16 shown in FIGS. 4 to 7 and FIGS. Widening to the specified bottom bottom dimension, the corner forming plate 17 moves to the missing corner and forms the entire inner surface of the bottom bottom folding fold, making it possible to fold and square each part more reliably. operational features lift 18 and against the plate 15, 16 and 17 plates, pressed with incorporated bottom creasing heater 19 together with the measuring instrument (not shown) to the packaging machine 1 of the top ho Tsu par 21 therebetween A horizontal heater 12 that is charged and filled with a weighed product is placed in a predetermined position, and a top seal E is applied to the top of the bag and a bottom seal F is applied to the bottom of the next bag as described above. Cut the wrapped packaging bag A with cutter 11 That. The separated packaging bag A is further lowered in a state where it is loaded on the lift 18 and is sent to the next process by being brought down at a position where it is sent to the next process . For example, when it is transferred to the conveyor 23, the lift 18 rises again, repeats the above-described operation, fills and packs the product, and continues production.

  This packaging bag is characterized by manufacturing a packaging bag having folded folds D or D ′ at each corner in the longitudinal direction of the body portion and a folded fold G portion at the bottom as described above. Depending on the product to be used, depending on the desired shape, physical properties of the packaging film, etc., it may be necessary to fold back only at the bottom, but when applying crease G to the bottom together with the trunk, the corners of the packaging film are arranged in the vertical direction. Since the folded folds are formed, the inner circumferential length thereof becomes shorter according to the width of the folds formed from the time of the initial square tube formation. After that, a fold G is attached to the bottom.

When applying creases in the vertical direction, the outer circumference of the square tube forming cylinder 6 must be within the inner dimensions after the crease part crease, so that the bottom crease uses the lower end of the square tube formation cylinder 6 as a jig, Since it is necessary to have the dimensions before the folds are provided in the longitudinal direction of the trunk part, first, the folding folds are provided in the longitudinal direction of the trunk part, and then L slightly below the lower end of the crease part D formed in consideration of the bag size and the like. Until the position shown in FIG. 4A, the corners of the four sides of the square tube are cut off from the lower end of the square tube forming cylinder 6, and a bending method is selected by selecting, for example, a highly elastic material in the outer direction along the line L at the upper part of the cut position, or The part is machined and hinged, and a spring is attached to the swinging system, etc., so that it always spreads wider than the cross-sectional dimension of the bag and the roller 22 that regulates the widening width is attached to each surface and pushed back. Bottom Hold the fixed width folds forming position, form the folds and feed each widening restriction roller 22 on the inside so that it does not become an obstacle when feeding down the pitch of one bag to perform the next operation. When it is finished, it returns to the original crease formation position . The details are as shown in FIG. 7 (a), while the downward feeding of the rectangular tube-shaped film C having a crease in the body portion is made as shown in FIG. 5 is expanded to the position shown in FIG. 5 (b), as shown in FIG. 6, the lift 18 is lifted to form the bottom fold G and the lower bottom H is squared down. Continue with the packaging.

In the process of packaging with the packaging bag of the present invention, the lift 18 descends and rises, and an important action is performed in the process, but the above-described lift loaded with the packaging bag A filled and packaged in order to increase the efficiency of the crease operation at the bottom. Prior to performing a full-fledged folding operation on the lower part of the next packaging bag that has already been formed at that time, after 18 is lowered and sent to the next process and then rises again, FIGS. Since the lower end of the square cylinder forming cylinder 6 and the lower end of the formed flat bottom crease part G coincide with each other, the preliminary folding apparatus shown in FIG. 24 takes into account the physical properties of the packaging material for each surface, and supports the approximate L-shaped metal piece 25 whose length is narrower than the inner width of the folds to be formed by the main holding arm 26, and the angle is over 90 ° by the parallel link mechanism. With rolling arm 27 link to rotate When the packaged packaging bag A is cut and lowered while being loaded on the lift 18, the approximate L-shaped metal piece 25 moves the main holding arm 26 away from the packaging bag so that the position of the folded back of the packaging film B does not shift. The pre-folding device 25 is clamped and fixed at the lower end of the square cylinder forming cylinder 16 . During the process, the packaging film B is rubbed with parts, and care must be taken not to damage the part. Therefore, the sliding movement is horizontal when there is no problem due to the physical properties of the packaging film B, and the horizontal movement when there is a problem with the packaging film. Raise slightly afterwards or make the angle of its inner surface 90 ° or more, etc., and contact the inner corner with the folded part of the corner bottom formed at the lower end of 6 of the square cylinder forming cylinder between the outer surfaces After that, the rolling arm 27 is rotated inward until the other surface of the approximate L-shaped metal piece 25 comes into contact with the inner surface of the square cylinder forming cylinder 6, and FIG. Fig. 2 shows the state after the operation, and the preliminary folding device is used after the lower bottom portion that has been formed so as to be lowered below the square tube forming cylinder 6 is generally housed in the concave shape inside the square tube forming cylinder 6. 25 returns to the old position, After that, the shape is adjusted by the bottom fold forming plates 15, 16, 17 provided on the lift 18 that has been lifted, and the following is as described above. The time is shortened as much as possible, and the total time is shortened so that the overlap does not cause a reduction in packaging capacity, and sometimes the square tube forming cylinder is moved up or down by the width when the bottom folded fold surface is bonded. Considering the method of feeding the packaging film in the form of a tube and measuring the capacity, we set up a program with consideration given to a little capacity, and the physical properties such as thickness, strength and flexibility of the packaging film are also appropriate. The product is manufactured by manufacturing the packaging bag of the present application by selecting a high material.

The perspective view which shows the state which cut the packaging bag which the packing packaging completion | finish by the vertical packaging machine which manufactures the folding bag with a folding crease around the trunk | drum and lower bottom periphery of the square-tube square bottom bag of invention of this application. The perspective view which shows the state which sealed the upper part with a horizontal heater after filling a packaging bag with goods with a vertical packaging machine. X, Y, and Z of a figure are horizontal sectional views of X to X, Y to Y, and Z to Z of the packaging machine of FIG. The schematic of the front view of the formation means of the packaging bag of this invention. Explanatory drawing of the side view of the formation means of the packaging bag of this invention. Explanatory drawing of the side view of the formation means of the packaging bag of this invention. Explanatory drawing of the side view of the formation means of the packaging bag of this invention. Explanatory drawing which shows the relationship between the folding fold at the bottom part by this invention, the packaging bag which carried out the folding crease which differs in the ridgeline of a trunk | drum, and a crease lift. Explanatory drawing which shows the relationship between the folding fold at the bottom part by this invention, the packaging bag which carried out the folding crease which differs in the ridgeline of a trunk | drum, and a crease lift. Explanatory drawing which shows the positional relationship of an operation | movement before operation | movement of the raising / lowering lift with a bottom fold. Explanatory drawing of operation | movement of the preliminary | backup folding performed before the folding crease formed in a bottom part. Explanatory drawing of operation | movement of the preliminary | backup folding performed before the folding crease formed in a bottom part. Explanatory drawing before and behind operation | movement of a preliminary folding apparatus.

Explanation of symbols

1-Vertical automatic packaging machine, 2-step roller, 3-film feed roller, 4-guide roller, 5-former, 6-cube cylinder, 7-vertical heater, 8-fold guide, 9-fold Sealer, 10-Presser roller, 11-Cutter, 12-Horizontal heater, 13-Bottom folding plate, 14-Gazette folding plate, 15-Front and rear bottom crease forming plate, 16-Left and right lateral fold forming plate, 17-Bottom corner forming plate , 18-fold lifting lift, 19-bottom heater, 20-feed belt, 21-hopper, 22-widening restriction roller, 23-conveyor, 24-bottom fold pre-folding device, 25-approximate L-shaped hardware, 26 -Main holding arm, 27-Rolling arm, 28-Linking link A-Packaging bag, B-Packaging film, C-Square tube, D-Body parallel fold, D '-Body taper fold, E- Top seal, F-bottom seal, G-bottom folding folds, H-bottom bottom, J-backed, L-cylinder bottom widening operation base, M-longitudinal folding fold length, N-vertical folds top seal And the length required to form the bottom.

Claims (3)

A rectangular bag-shaped packaging bag formed by a packaging film mounted on a packaging machine, wherein a folding fold is provided at the lower end of each of the front, back, left and right surfaces, and a flat bottom is formed on the inner upper portion of the folding fold. Because
A crease lift (18) including a crease forming plate (15, 16) with respect to the bottom of the square tubular packaging bag in a state of surrounding a square tubular forming cylinder (6) for forming the square tubular packaging bag. ) To position the crease forming plates (15, 16) in the inner space of the square cylinder forming cylinder (6),
After the first step, the crease forming plate (15, 16) is widened and brought into contact with the inner surface of the square cylinder forming cylinder (6), and a portion (G) to be the folded fold portion is folded. Two steps,
A method for manufacturing a packaging bag. After the second step, the square tubular packaging bag and the crease lift (18) are lowered with respect to the square tubular forming cylinder (6) to fold the folded folded fold of the square tubular packaging bag. A third step of further widening the crease forming plate (15, 16) after the portion (G) to be a part has separated from the lower end of the rectangular tube forming cylinder (6);
After the third step, heat seal adhesion of the portion (G) that becomes the folded fold portion by the heater (19) with the fold forming plate (15, 16) as a backing plate, and a fourth step;
The manufacturing method of the packaging bag of Claim 1 further equipped with these. The crease lift (18) includes front and rear crease formation plates (15), left and right crease formation plates (16), and a corner formation plate (17).
In the widening in the third step, the front and rear crease formation plates (15) and the left and right crease formation plates (16) are widened to a predetermined lower bottom dimension, and the corners are formed in the missing corners. Move the plate (17),
The manufacturing method of the packaging bag of Claim 2.

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