JPH03275408A - Production of packing bag, packer and apparatus - Google Patents

Abstract

PURPOSE:To protect a packed form of articles from deforming and provide a high grade appearance, by sticking a surface reinforced sheet having required appropriate characteristics to a specified plane to form a packing bag to contain goods and pack them. CONSTITUTION:A roll of film 3 is fed by a continuous feed roller 4 and a specified length of the film 3 is unfolded by means of the first feed roller 7 for constant size and treated for a preliminary adhesion of the surface reinforced sheet 10 after the halt and then transferred to the forming direction after the preliminary adhesion of the surface reinforced sheet to heat seal by a vertical heater 27 to form a flat tube. Next, the surface reinforced sheet 10 is finally attached to the winding up film 3 by compressing the heater 30 for finally sticking the surface reinforced sheet to stick a bottom sealing part by a bottom seal heater 31 to separate every bag by upper and lower cutter blades 32, 33 to feed it into the mandrel 34 of a charging part 11 of contents and stretch the corners of the bottom. The measured goods are charged and the fitting disc 35 of the mandrel is intermittently rotated to the arrow direction in turns and the motion is repeated. Gazette bags with a square bottom filled with goods are separated from the mandrel 34 and upper gazette sealing is carried out.

Description

[Detailed Description of the Invention] Industrial Application Fields This invention is aimed at packaging sea bream for consumers (= packaging materials made from various paper, synthetic resin, etc. films among the products provided). This relates to a technical field in which products in a packaging form called flexible packaging retain their shape immediately after packaging until they are provided to consumers, which is difficult due to the nature of the packaging material.

<Conventional technology> After various products such as sweets and foods are produced, they are often weighed and packaged in units of price or weight and provided to consumers, and the style and form vary depending on each product. Although there are different types of packaging called flexible packaging, various types of paper or materials that prevent moisture absorption, oxygen and other gases, or light such as ultraviolet rays from transmitting are used to protect the product.ζ: Purpose ( = A film-like material made by laminating a single synthetic resin film with corresponding characteristics or a combination of these is used, and depending on the product, it is usually a packaging machine C: A packaging bag is formed and the price or weight unit set in it. (=After the products are placed and sealed, a predetermined number of products are packed into shipping containers such as cardboard cases and shipped as one unit to retailers.

<Problems to be solved by the invention> When packaging products using this flexible packaging film, the packaging can be used automatically (if the production scale is small enough to
In cases where the quantity of products is small, and the contents are relatively high-class and can be sold at a relatively high price, a bag-making specialist will make stamp ink pouches, four-sided seals, gusseted bags, etc. according to the product size. In some cases, a packaging bag is purchased, the product is placed inside, and the product is sealed and sold.

However, with this method, the packaging bag has a good finish, but since it is made into a bag, it is difficult to handle when transporting or bulk packaging, so in most cases, a roll of flexible packaging film is made into a bag after the product is produced. A method of packaging is used.

This rolled-up flexible packaging film (hereinafter referred to as "rolled film")
'r) to automatically package the product C: When packaging the product Content: The shape of the product is well-organized and tied, or even if the shape is irregular, if it is placed in a thin plastic or other container in advance, it will be horizontal. Using a packaging machine, the product is sent from the top, with the product name, pattern, etc. printed on the outside surface C; covered, and the vertical and horizontal edges are glued to the throat and groove of each bag, which are set, and then separated and individually packaged. It is also frequently used because it is fast and efficient, but it is not suitable for packaging mass-produced snacks, etc., which are called para-products (: is not suitable and a different method is used.

Since these so-called bulk products are irregular in shape, a vertical packaging machine is usually used, and the loaded film is shaped into a cylindrical or rectangular tube using a former cylinder, etc. Glue both longitudinal ends to form a tube and glue the back and lower part, put the desired amount of product inside, feed the bag at a predetermined pitch, and then glue the top of the bag and then the bottom of the packaging bag at the same time to form the adhesive surface. Sea bream packaging is carried out by cutting off the middle of the sea bream and repeating this process.

With this vertical packaging machine, the rolled film is wrapped in a cylindrical shape, which is called a pillow type, and when laid flat, it becomes pillow-like.The shape does not change in that state, but the packaging film softens when handled. Due to their structure, they are easily deformed and displayed in stores (= They are often displayed vertically for space efficiency reasons. Therefore, C: they deform,
In addition, cardboard cases, etc. &: Delivery unit (2) When packing a predetermined number of products, the space between the pillow-type packaged products (: Also, the contact area with the cardboard case (= there is a lot of space that cannot be filled, and the storage efficiency is not good.

In addition, packaging bags made of packaging film in the shape of a rectangular tube are used together with packaging called gazette type packaging, which is similar to this type of packaging. It is comparatively well-organized, easy to pack into multi-pole cases, and has a higher storage efficiency than the pillow type.
Furthermore, in order to give this type of product a sense of luxury, bag-making and packaging machines of the type used by bag-making companies that integrate the product filling section into the bag-making section have come into use. In the case of gusset-type packaging, the reinforcing material at the four corners was ensured (twice), and the shape immediately after packaging became even more regular.

Ta.

However, after these products are delivered to the store (2)
= When displaying (: Also, due to frequent handling such as rearranging the products, the shape that had been maintained until then may become distorted each time when consumers touch the products with their hands while deciding on the products when purchasing.) In particular, products packaged using a bag-forming and packaging machine initially have more corner reinforcements than products packaged using a vertical packaging machine.
There have always been problems such as Nipinholes are formed and moisture is absorbed through the holes, and even if there is no such hole, the product may break, reducing the value of the product.

<Purpose of the Invention> The purpose of the invention of this application is to create a pillow-type packaging 52 which utilizes the packaging technology based on the above-mentioned conventional method (:) to prevent deformation, and which has certain merits such as low packaging cost and easy handling of the packaging machine. However, it is also possible to reduce logistics costs by improving the storage efficiency in delivery containers, and also to reduce logistics costs (by adopting square tube or square tube gusset packaging formats, which are also effective for automating the tying of double-corrugated cardboard cases, etc.) It prevents the deformation that occurs due to packaging in cardboard cases, display at retail stores, and handling by consumers during product selection, and maintains the shape immediately after packaging. Even if a flexible packaging film is used, the outer periphery of the packaging bag is processed so that it retains its shape immediately after packaging, so that the packaging form of the produced and packaged product is not consumed by consumers. The purpose of this product is to prevent the product from losing its shape even after being handled a little roughly (=to provide novel and luxurious packaging for the product).

Ru.

<No means for solving the problem> In line with the above-mentioned purpose, the structure of this application, which is summarized in the above-mentioned claims, uses a roll-shaped packaging film to solve the above-mentioned problem. In the case of bag making and packaging for products in ζ-, conventional methods of handling or handling have been used to prevent the shape from deforming immediately after packaging. Efforts have been made to strengthen the reinforcing material at the hem, or to glue several threads of reinforcing material at the butt part.

However, even if this corner part is strengthened, it is not possible to prevent the product from being pushed out and deformed. Since there was a limit to the possibility of pinholes, the reinforcing material in the corner parts was appropriate (two lines, and in addition, the surface part C: before making the bag with an appropriate material considering the product content) 4:, Packaging Film 6 2 packages Al 2 Separate - 2 prepared and mounted A stiff and adhesive surface reinforced sheet with a predetermined width ζ: a predetermined width prepared and mounted bag dimensions C: corresponding length Either the bag is cut and glued in synchronization with the bag making and packaging process of the packaging machine, or the C part is partially glued before bag making, and the product is fully glued after bag making, and then the product is filled and sealed for packaging. Then, material C to be bonded and reinforced; therefore, it may be a little difficult to bond in some places, but we will deal with it each time, and even in pillow-type packaging, for example, the reinforcement mentioned above can be applied to a part of the front side of the packaging bag. It is possible to do so by taking technical measures to ensure that the double-convex packaging of soft packaging films such as diagonal cylindrical or gusseted bags maintains the shape immediately after packaging.

<Example> Next 4: An example of the present invention will be described below with reference to the drawings.

The same features in the figures will be described using the same reference numerals.

. FIRST EMBODIMENT FIG. 1 shows a first embodiment of the present invention, which is a schematic plan view of a square-bottom gusset bag type packaging machine that includes Yokoya's bag-making department (two parts followed by a filling and packaging part). Figure 2 also shows a side view, in which the loaded roll film 3 is placed at a predetermined position in the bag making section 2 of the packaging machine 1 by a continuous feed roller 4, and a step roller 5 is moved while adjusting the feed length. After that, the roll-up film 3c2 is developed in prescribed figures 6, 8, 10, etc. +
:The pitch of each bag is indicated by Target (: Registration mark reading device 64 that is printed for positioning and reads this mark = Subsequently, the signal 1: 1
The first fixed-size feed roller 7, which feeds the length of the bag, is driven and stopped in synchronization with the second fixed-size feed roller 8, intermittently (=feeding, with the initial continuous feed roller 4) according to the set packaging speed. The slack caused by the connection ζ2 is adjusted and absorbed by the step roller 5 mentioned above.

In order to maintain the shape of the square bottom gusset bag 9 shown in FIG. The surface reinforced sheet 10, which was determined by taking into consideration the nature of the product, the degree of shape retention, the difficulty of the bag-making method, etc., is rolled up and placed in the same packaging machine 1 (two racks).

This surface-reinforced sheet 10 is used for reinforcing the surface by gluing the inner surface of the square-bottomed gusset bag 9 for packaging products. For adhesion of each part of the pick-up film 3, it is common to use a thermal adhesive that can be instantaneously bonded with a heat sealer for adhering each part of a normal packaging bag, and the surface reinforced sheet 10 of this embodiment is also I will use adhesive to explain.

During packaging, as mentioned above, the winding film 3 mounted on the packaging machine is continuously and smoothly adjusted to the packaging speed using the continuous feed roller 4 to the required size. The length of one bag is fed out intermittently by the operation of each part of the packaging machine (: synchronously), and the slack in the meantime is adjusted appropriately by the step roller 5 as described above.

The first foot size feed roller 7 is at the same speed as the second size feed roller 8, and its drive is stopped at the same time. After the film 3 is made into bags, the product filling section 11 (= reliably feeds the product).

When the winding film 3 is fed a predetermined length by the first fixed length feed roller 7 and stopped, the surface reinforced sheet 10 is preliminarily bonded in the next step. The width and rows corresponding to the surfaces to be strengthened in the feeding direction of the square bottom gusset bag 9 are also determined with mutual spacing, and based on this, the packaging machine 1 (= mounted and prepared) is prepared as a roll. Hold sheet size feed roller 12C for each row
: Figure 6 (Feeding directions shown in 2)
, i will be described later in the horizontal direction, but slightly in front of the 1st line, c, d
Between d and e, between f and g, and between g and h, send the m line to a slightly forward position.

On top of each row is a surface reinforced sheet 10 (=corresponding forming C during bag making: a surface or dot shape that does not peel off or hinder its operation C: a preparation shown in Fig. 3 I for adhesion). Adhesive heater 13, 3 sets of 1 bag of upper blade 14 and lower blade 15 of the holding sheet cutting cutter for cutting each side into two pieces to a predetermined length (2 pieces) are prepared as a surface reinforced sheet preliminary adhesion unit. As shown in FIG. 3, when the surface-reinforced sheet 10 is fed to the predetermined position mentioned above and stopped, the first part of the bonding process is performed.
Setsu) 17, m.

2nd set of n-linked bonds H8, 3rd set of n, o-linked bonds 1
9 are individually dimensioned, and the first set 17
is lowered, and the horizontal one line side between c, e, f, h and i is attached to the first side of the pre-bonding unit 16, and g 17 is pre-bonded by operating the air cylinder 20 etc., and at the same time c m s
The upper blade 14 of the cutter attached at the predetermined position of *
and the lower blade 15, and when the first set 17 is finished, the first set 17 returns to its old position, and during that time the surface reinforced sheet 10 is cut by a predetermined number of millimeters, but for the reason described later, the surface reinforced sheet is fixed. The size feed roller 12 is reversed and retracted by a predetermined slight size, and at the same time (the two preliminary adhesive units 16 are
(As shown, move the second set 1B forward by a distance of Q shown in Figure 3, IC = Figure 3, in the direction of movement of the position where the two-sided reinforced sheet 10 is to be bonded). After the operation is completed, the second set 1 is dimensioned as described above.
8, operate the air cylinder 20', etc., glue the preliminary adhesive heater 13', the upper blade 14' and the lower blade 15' of the cutter (: glue the horizontal m, ljl sides, cut the n line side, and glue the surface reinforced sheet again. The fixed size feed roller 12 is reversed to slightly retract the surface reinforced sheet 10, and at the same time the surface reinforced film preliminary adhesion unit 1 is
6 to a predetermined position at a distance R shown in FIG. 3 I in comparison with FIG.
A control device (not shown) operates to pre-glue the preliminary gluing heater 13'' and cutter's upper blade 14' and lower blade 15' (two horizontal rrts* and simultaneously cut the 4:0411Ill). 1 of the packaging
Preliminary bonding is first performed at high speed when the intermittent operation of the cycle is stopped, as shown in FIG.

In addition, at that time, Enbetsu (two cut and pre-glued holding sheets 1-1)
For example, when the length of the sheet is relatively long, for example between m and n in this case, it may be better to increase the number of preliminary gluing locations so that twisting etc. do not occur during the bag making process.

When the preliminary adhesion of the surface reinforced sheet 10 to a predetermined location is completed in this way, that part is attached to the forming part 2 in the next cycle.
Sent in one direction, here (: is forming plate 2
2 is installed, and from this C unit, the winding film 3 is placed on the forming plate 22 (2) with the surface reinforcing sheet 10 pre-adhered to the predetermined location on the surface after bag making. The width of the roller 24.24 is 69g as shown in Fig. 6 from the second roller 25.25i, and the forming plate 22 is wrapped between the width of d and the width of g and i, and then the paper gathering spatula 26 .26, align the surfaces between a and b and between 11, and in that state turn it to one side and in the next cycle press the vertical heater 27 from above by driving the actuator (not shown) and heat seal it. Now, the winding film 3 is formed into a flat tube with a width of dlg.

Continuing to follow the packaging cycle, the gusset guide rollers 28 and 28 were adjusted to match the dimensions e and f shown in Figure 6 (Fig. A gusset tube is formed using the gusset folding discs 29 and 29, and then (the double-sided reinforced sheet weighted heater 30 is driven by an actuating device (not shown) to press down and press a predetermined portion, and the double-sided reinforced sheet 10 is wound. Take-off film 6≦
Two pieces are attached, and then the bottom seal part is bonded using the bottom seal heater 31 by driving an actuating device (not shown).
For each bag, the cutter upper blade 32 is separated from the lower blade 33 by operating an air cylinder 32' or the like, and the mandrel 34 (2) of the product filling section 11 is fed and installed using a feeding device (not shown), and the bottom part is cornered. (Heating the heat sealing part at the double bottom sealing position on the bottom surface with a heater (not shown) so that the two bottoms are in close contact with each other, then folding the bottom surface to form a square bottom (: displaying the product in an upright position after soaking and packaging) A measuring device (not shown) was used to measure a predetermined amount from the rear upper part to make it easier to use.
This operation is repeated by rotating intermittently in the direction of the arrow in accordance with the packaging cycle of the packaging machine, and the filled square bottom gusset bag is subsequently removed from the mandrel 34 and the upper part is gusset sealed in the next step (not shown). Packaging is complete.

Figure 5 is similar to Figure 6 (=expanded and marked in the figure).
The surface reinforcing sheet 10 can be bonded to the flat surface forming the outer periphery of the entire surface (This is an example in which the surface reinforcing sheet 10 is bonded to the surface forming the outer periphery of the surface reinforcing sheet 10. These are determined by considering the adhesive surface, its material, thickness, workability during bag making, cost, etc.

It is also necessary to consider the area size of the surface to which the text reinforcement sheet 10 is to be adhered, and it is okay to close the butt part of each surface, but as mentioned earlier, is it better to separate it a little during packaging work? For the two-pronged final product,
Since there are fewer problems such as pinholes occurring in that part when handling it at the time of handling, in this embodiment, the surface reinforcing sheet 10 that is slightly narrower in the width direction is adhered, and the preliminary adhesive unit 16 is moved and the holding sheet is attached. We have explained the method of moving the fixed size feed roller 12 in the reverse direction to move it slightly away from the corner part, and we have also explained the basics of the simplest C2 method for the bag making section for this square bottom gusset packaging. In remote villages, products are highly structured such as rapid cooling after thermal bonding, and by adopting them as necessary, it is possible to package products with a well-defined shape. This is a plan view of the part shown in the arrow direction in Figure 2 + 2A, A...HoH in the bagging process, and the capital letters indicate the common parts in Figures 2 and 4.

This is an indication.

An example of adhering the adhesive surface and the remaining portion (two-sided reinforced sheet 10) of the square-bottomed gusset packaging bag 9 described above has been described, but as mentioned above, considering the content product, workability, and cost, two similar examples were prepared. The outer circumference between horizontal m and n and n, whose development is shown in Fig. 8, are
The form shown in Fig. 7, in which the surface reinforcing sheet 10 is adhered to the bottom of the o-wall, is also the vertical direction shown in Fig. 10 as a third similar embodiment.

The product is packaged in a shape added to that shown in FIG. 9, in which a surface reinforcing sheet 10 is adhered in the horizontal direction between 1 and 0 between 0, e and f, h and i.

Second Embodiment FIG. 11 shows a second embodiment of the present invention, in which a vertical packaging machine is used to package a square tube-shaped (two-packed product).

Fig. 12 is an exploded view of this packaging bag, and Fig. 13 is a perspective view of the vertical packaging machine 36 for adhering the reinforced sheet 10 to the roll-up film 3 and filling and packaging the product. .

The products that are packed using the vertical packaging machine 36 are thought to be the most common type of flexible packaging. Special products (Nigazette Tacker - 37 etc. are installed and shaped into rectangular tubes by heat-sealing, which takes time and effort to install, and which belong to the same category) The film 3 is wrapped around the rectangular cylinder 38 (2 times) and the corners of the four sides (2) are shaped by running a grooved roller (not shown) or the like, or by forming the corners with a former 5.
Before making it into a rectangular tube shape in step 9 (the part that will become the corner after making the second bag ≦
; After applying creasing with a creasing roller, use the former 39
, After forming a rectangular cylinder shape with the rectangular cylinder 38, the back pasted portions between a and b in Fig. 12 and between 1 and 5 are bonded using a vertical heater 40, and the bottom of the gap is sealed at o. A product weighed using a measuring device (not shown) installed in the bag is fed from the supply hopper 42, and the part between 0 and 1, which will be the bottom of the next bag, is placed in the gusset.

The product is molded using a car 37, heat-sealed and sealed using a horizontal heater 40 as described above, and then cut at the center of the heat-sealed portion using a cutter 43 attached to the center of the horizontal heater 42 to complete individual packaging.

In this state, pack it into a shipping container such as a cardboard case (2) and store it at the store (2). Even when attaching, the corner portion leaves only linear marks and the shape retention is lost and the shape collapses and deforms, so as shown in FIG. As shown in the figure, make the slope as high as possible from the highest position, and then
4, a surface-reinforced sheet adhesive part 45 is installed in front of the feed-out former 39, and the surface-reinforced sheet 10 mounted in a predetermined row with a predetermined width is set to the surface-reinforced sheet size in the same manner as the winding film 3 of the vertical packaging machine 36. In this embodiment, the feed roller 12 is fed to a predetermined position and the pre-gluing unit 16 is straddled in the same manner as described in the first embodiment. At the same time, the upper blade 14' and the lower blade 15' (two to a predetermined length, It operates in synchronization with the packaging cycle of the packaging machine, cuts the surface reinforced sheet 10 into a predetermined position for each bag (preliminarily adheres it, passes through 7 omer 39 parts, and then forms it into a rectangular cylinder 38 with a rectangular cylinder 38. The product is packaged in a packaging bag which has been formed into a tube (two sheets) and adhered using the adhesive heater 30, and which has been surface-reinforced in the same manner as described above.

As mentioned above, FIG. 11 shows a packaging bag made according to the second embodiment, and its surface reinforcement is as shown in FIG.
X'le% eI f % flh By taking into consideration the material, structure, etc. of the film 6 and the surface reinforcing sheet 10, and selecting the mounting dimensions and parts, it is possible to maintain the corresponding shape depending on the product content.

Third Embodiment FIG. 17 shows a third embodiment of the present invention in which a vertical packaging machine is used and the front ζ two-sided reinforced sheet 10 of a pillow-type packaging bag is used.
Examples of adhesive bonding are as follows.

Figure 17 shows packaging for snacks and other products that are mass-produced using the vertical packaging machine 36 and for which shape retention is not a particular problem (2. Pillow-shaped packaging, as mentioned above, is the most commonly used type). Figure 18C shows a packaged product in the form of Figure 18C;
The roll-up film 3 is shown in an unfolded state, and is placed at a predetermined position for each size of one bag, for example, between e and f in the vertical direction, and m in the horizontal direction.
, 11, the product is packaged with the surface reinforced sheet 10 bonded between them.

As mentioned above, the surface reinforced sheet 10 is bonded in the same way as in the second embodiment (2) As shown in FIG. Same as in the embodiment C: The winding film feeding belt 41 is mounted and the winding film 3 is schematically shown (2) The product packaging speed of the vertical packaging machine 36 (2) The speed of product packaging of the vertical packaging machine 36 (2) Intermittent in synchronization C: The speed of the product packaging for one bag Length feeding As mentioned earlier, the surface reinforced sheet 10 is placed in front of the former 69 (= similar to the second embodiment (= provided surface reinforced sheet adhesive part 4
5) Preliminarily adhere to the predetermined position (2) in the same way as in the second embodiment, and then press the wrapping cycle of the packaging machine 36 (2).
1- Feed the film into a cylindrical shape so as to wrap around the outer periphery of the cylindrical cylinder 46, then align the spaces a and b and the spaces i and 1 of the winding film 3 with the vertical heater 40C. Products are put into this from the supply hopper 42 at the top, and the space between the top of the bag and the bottom of the next bag is heat-sealed and bonded by a horizontal heater 43 (:), and at the same time the center part cutter 44
is operated to separate each bag in the horizontal direction and complete round packaging.

Regarding the surface reinforcement of this pillow packaging bag, in this embodiment, only the front side is reinforced, but if the width is increased by one sheet, the surface reinforcement sheet 10 is pre-glued in advance. When forming a cylindrical tube, wrinkles may occur in the former 39 part, which may result in the formation of a cylindrical tube (2 problems are likely to occur, so there is a restriction on the width of the tube). Example (Two square cylinders similar to each other) Since the repillow type can be made into different shapes, the shape and physical properties of the contents, the area and shape of the holding sheet 10, and its material cost are similar to other examples. It is only necessary to make an appropriate decision after taking into consideration the following: This embodiment (=Even the surface reinforcement shown in this example has the effect of maintaining the shape compared to the conventional product (2).

Furthermore, the first embodiment (two square bottom gusset bag forms) and the square cylindrical bag form shown in the second embodiment (when packaging two products C:
Predetermined position of the winding film 3.

In particular, when adhering the surface reinforced sheet 10 between the two widths m and n, it is important to maintain the shape (depending on the degree of stiffness of the material, excessive force may be applied to each part, so C:
Double-sided reinforced sheet 0 must be selected with safety and hygiene in mind if the product is food, and it is important to carefully select its material, pre-adhesion, heavy adhesion, positioning method, etc., but when making bags ( 2. Approximately the center of the rolled film (2 is a relatively close part (2 is relatively C: it does not require too much force, so even if you focus on strengthening the surface of this part, the shape will be maintained (: there is an effect, Fig. 14 (2 m,
Transversely between n (= surface reinforced sheet 1 as shown by cutting)
0 is made slightly wider than the longitudinal e and f dimensions, and after temporarily gluing it during bag making, bend the e side in the d direction and the f side in the g direction into a C-shaped shape, and then permanently glue it to make the bag. Take C: From
It is also possible to use fewer materials and have a more uniform shape.

Also, FIG. 15 is a cross-cutting diagram between m and n of a square-bottomed gusset or square-tubular packaging bag as described above. Third embodiment≦2 can also be applied, but the adhesive side of the main adhesive heater 30, the adhesive side of the main adhesive heater 30, the molding cylinder 3
8, or in some cases 46, both sides of the opposing sides (= heat-deformable surface-reinforced sheet 1 with matching uneven patterns engraved)
If it is 0, the pattern can be left. - In Figure 15, a zigzag shape is shown except for the corner parts, but it can also be made into any shape such as a wave shape or a diamond lattice shape. It is also possible to add a specific pattern.

Fig. 16 shows an example in which one surface reinforced sheet 10 is glued crosswise between the same <m and n. When making bags in the width direction (because there is a two-dimensional difference, the resulting dimensional difference is not glued on the inside (: an example is shown in which the bags are made with the corners sticking out), but in the bag making section With the method of making bags using a mandrel, there is no need to worry about this.
It is possible to bond the winding film 3 to the inner side and the surface reinforced sheet 10 to the entire surface, although this is not shown in the drawings. Similarly, it is possible, effective, and possible to mechanically (automatically bond) printed surface-reinforced sheets to maintain the shape of the packaging bag immediately after packaging and prevent it from deforming.

<Effects of the invention> Due to its simplicity and low cost, flexible packaging films have traditionally been used to package foods, especially confectionery, in large quantities and provided to consumers. Most of them are pillow-type, and there are a large number of similar products (: once they are on the market, it becomes difficult to differentiate them, and some of them are packaged in the shape of square tubes or square-bottom gussets, but the packaging material itself is soft and has a stiff back. Because there is no cardboard box for shipping (it is good, but products sold in large quantities at stores) lose their shape every time they are handled, so the effectiveness of the effort was questionable.

The next higher level of packaging is to make a paper box printed with coated cardboard or the like, and then attach an inner bag to fill and package the product, or to package the product in a pillow, rectangular tube, gusset bag, etc. Items are placed inside a paper box (two knots, glued together, and wrapped in a carton), which results in a considerable increase in cost compared to soft packaging (= soft packaging), which was difficult to adopt for mass-market products or mass-produced products due to cost considerations. By using a flexible packaging film based on the present invention, and bonding the surface that forms the outer periphery of the packaging film with a prepared surface reinforcing sheet, it is possible to use either a horizontal or vertical packaging machine. Also, the shape is a pillow square tube,
Although there are some restrictions on the square bottom gusset shape, it is easier to maintain the shape immediately after packaging, and consumers (:
The feeling of a decline in product value due to = will be greatly reduced.

Especially (two-sided bottom gusset bag ≦2 is effective and flexible packaging film (
It is thought to be positioned between conventional packaging using paper boxes and carton packaging using paper boxes, but the cost is low and it is possible to give a sense of luxury, and it also has the effect of being useful for sales promotion.

Furthermore, as a result of the strengthened outer circumferential surface of the packaging bag, it is easier to stack even side-shaped packaging than before, which has the excellent effect of promoting labor-saving and rationalization by automating the packaging of cardboard boxes for delivery.

[Brief explanation of drawings]

The drawings are mode diagrams of an embodiment of the invention of this application, and FIG. 1 is an overall schematic plan view of a horizontal packaging machine shown in the first embodiment;
Figure 2 is the same side view as Figure 1, No. 51s 3L 3
Figure 1 is an enlarged view explaining the operation of the main parts of the preliminary adhesion unit in order, 4A, 4A, and aB. 4c, 41), 4B, 4F, 4G, 4B are shown in Figure 2 3-
Figure 2 shows the changes in the shape of the packaging bag shown during the bag-making process. Figure 5 is a perspective view of the packaging bag made in the first embodiment, Figure 6 is a developed plan view showing the state of adhesion of the roll-up film C used on two sides: the surface reinforced sheet, and Figure 7 is the same. A perspective view of a packaging bag according to the first embodiment, with the content shown in FIG. 5 modified by 1s, and FIG. The method is the same as in the first embodiment, but the method shown in FIGS. 5 and 7C; 10
The figure shows a plan development view showing the state of adhesion of the surface-reinforced sheet to the roll-up film used for this, FIG. 11 is a perspective view of a packaging bag made from this second embodiment C; and FIG. C: Winding film used C: A flat development view showing the adhesion status of the bonded surface-reinforced sheet. Figure 13 is a schematic diagram of the operation of the vertical packaging machine that uses this method to form and package products and use two sides. FIGS. 14, 15, and 16, which are explanatory perspective views, are the inner surface C of the packaging bag shown in the first and second embodiments: enlarged cross-sectional explanatory views showing different adhesion states of the adhered holding sheets; 1st
Figure 7 is a perspective view of a pillow-type packaging (2) packaging bag in which the present invention is implemented, Figure 18 is a plan development view showing the adhesion of the roll-up film and surface reinforcing sheet used for this, and Figure 19 is this C. It is a schematic side view of a vertical packaging machine to be used. 1... Horizontal packaging machine, 3... Winding film, 9... Square gusset bag, 10... Holding sheet, 16 ...Surface reinforced sheet preliminary adhesion unit, 50...
Surface reinforced sheet main adhesive heater 34...Product filling section mandrel, 36...Vertical packaging machine, 38... Square cylindrical cylinder 39... Former 46... Cylindrical cylinder A-H...・Horizontal packaging machine ζ: Alphabets (capital letters) during the bag-making process. Notes on the arrows of changes in the shape of the winding film and surface reinforced sheet, a, b-xi, j... manufacturing in the width direction of the end-of-life film. Portion after bag making, k, l to o, k... Portion after bag making with length of one bag of roll-up film, X-Y... Length of one bag of roll-up film, i9ro →,
W... Outer surface forming the packaging bag (: corresponding surface reinforced sheet to be bonded, Q, R... Distance the unit moves during preliminary bonding of the holding sheet.

Claims (5)

[Claims] (1) When packaging a product, a single layer or laminated packaging material with packaging suitability is rolled up to a specified width and prepared separately for each size of one bag, with surface reinforcement having the required suitability. A packaging bag characterized by adhering a sheet to a predetermined size on a predetermined surface to form a packaging bag, placing a product inside the bag, sealing it, and packaging it individually, which maintains its shape immediately after packaging and prevents it from deforming. bag making and packaging equipment and methods. (2) Each surface of the outer periphery of the packaging bag, which is formed by applying surface-reinforced sheets to prevent deformation, is divided into dimensions that allow bag making to be carried out without any trouble, and surface-reinforced sheets are adhered to predetermined surfaces. An apparatus and method for making and packaging packaging bags according to claim 1. (3) When the packaging bag is protected from deformation by a surface-reinforced sheet, and the surfaces adjacent to each other on the outer circumferential surface of the packaging bag form corner portions, the surface-reinforced sheet is bonded across multiple surfaces of the packaging bag. An apparatus and method for making and packaging packaging bags according to claim 1, characterized in that: (4) In a packaging bag in which surface reinforcement is applied to a predetermined position on the outer circumferential surface of a winding packaging film to prevent the film from deforming, the pattern or drawing pattern is set in a predetermined portion of the surface reinforcement sheet made of the selected material. An apparatus and method for making a packaging bag, characterized in that the packaging bag is filled with and glued together. (5) In a bag-forming and packaging machine that uses a mandrel to form bags, after adhering a surface-strengthening film to the side to be surface-reinforced, the bag is formed into a shape that matches the mandrel to prevent it from deforming. Bag making method using roll-up film.