JP2001328626A - Spout mounting method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a spout mounting method in a paper container having a spout which can cope with the change in the size of a paper container body of the paper container and the spout. SOLUTION: In the method for mounting the spout comprising a cylindrical part and a flange part on the paper container, each spout adaptable to containers with different corner dimensions in the horizontal section of the paper container is also used for a spout delivery part to be mounted on the paper container by setting the diameter of an inwardly recessed portion of the flange to be <=20 mm, and the corner dimensions in the horizontal section of the paper container are in the range of 50×50 to 100×100.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for mounting a spout in a paper container with a spout capable of coping with a change in the size of the paper container.

[0002]

2. Description of the Related Art Paper containers are liquid containers because they have properties such as sealing properties, preservability of contents, self-sustainability, rigidity and self-sustainability, as well as being lighter than bottles as containers. It has been widely used as a packaging container for commodities. In particular, the gobel top type paper container is a container having a shape in which an upright portion and an inclined portion are formed on the upright portion, and is easy to hold.In addition, since the upright portion has a square cross section, it is easy to handle broken balls and the like in distribution. It is used for various purposes due to its high efficiency of stacking and packaging, and its convenience such as being able to be stored in the door pocket of a refrigerator at home or the like. Further, a spout is provided not only in the above-mentioned gobel top type paper container but also in the paper container, so that the contents can be easily dispensed (poured out) and reclosed. The spout (or sometimes referred to as a spout union) which is usually mounted on a paper container is attached to the spout body and the opening of the spout body,
The cap is made of a reclosable cap, the spout body is made up of a flange portion and a tube portion, and a screw for engaging with the cap is provided on the outer peripheral surface of the tube portion. Filling and packaging machine for paper containers, for example, when using a Goebel top type paper container as a container, apply a crease processing to the laminated packaging material,
Punched and tube-attached sleeve (tube-attached body)
After forming the bottom part, as shown in Fig. 3 (a), a spout is installed, <3>, and then the contents are filled <5>, and the upper part is hermetically sealed <6> to pack. Body. As described above, the spout is attached to a predetermined position in the paper container molding process. A typical joining method is to project the cylindrical portion of the spout (usually with a cap attached) from the spout mounting hole 7 provided in the paper container to the outside of the paper container, This is performed by heat-sealing the upper surface of the flange and the innermost layer of the paper container.

[0003]

SUMMARY OF THE INVENTION Such a paper container is
Depending on the quantity (contents) required by the purchaser, the type of content, and the method of use, even the same content can be 1,000ml and 2,0
Packaging using containers of different capacities, such as 00 ml, 720 ml, 900 ml and 1,800 ml, etc., has been increasing.
Without changing the horizontal cross-sectional shape and dimensions of the upright part of the paper container,
In some cases, only the height of the paper container may be changed, but in this case, the same spout should be installed. The outlet is often fitted with a spout of a shape and size suitable for the container shape of each volume. Filling and packaging machines for paper containers can often be used with different filling contents.For example, the horizontal cross section of the upright portion of the above-mentioned goebel top type paper container changes, so that a spout with a different shape or size is installed. May be. in this way,
When the paper container and the spout thereof are changed, when the filling and packaging machine for the paper container is also used, stabilization particularly at the time of mounting the spout becomes very problematic. At this time, in order to supply the spout from the tip of the parts feeder to the mounting hole provided in the paper container, the suction cup that fixes the spout to the delivery tool by vacuum was replaced as a type change part.
Although the stability of the movement of the spout to the suction cup is obtained, it takes time to replace the suction cup. An object of the present invention is to provide a spout-equipped paper container with a spout capable of coping with the size change of the spout and the spout.

[0004]

SUMMARY OF THE INVENTION The present invention relates to a method for mounting a spout comprising a cylindrical portion and a flange portion on a paper container, the spouts being adapted to containers having different horizontal cross-sectional angular dimensions in the paper container. The diameter of the recess on the inner surface of the flange.
A method for mounting a spout characterized by using a spout delivery portion to be mounted on a paper container by setting the length to 20 mm or less, wherein the horizontal dimension of the paper container is 50 × 50.
This includes the range of 100100 × 100.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION A method for mounting a spout according to the present invention will be described in more detail with reference to the drawings. FIG.
(A) is a perspective view showing a package, and (b) X shows an embodiment of a container with a spout according to the method for mounting a spout according to the present invention.
-It is X sectional drawing. (C) It is a conceptual diagram of spout mounting | wearing. 2A and 2B are diagrams for explaining the shape of the concave portion of the spout body. FIG. 2A is a cross-sectional view when an undercut is provided on the peripheral wall of the concave portion, and FIG. 2B is a cross-sectional view when no undercut is provided. is there. FIGS. 3A and 3B show sizes of the container with the spout according to the capacity, and show (a) an example of the dimensions of the paper container body, (b) a cross-sectional view taken along the line XX, and (c) an example of the dimensions of the spout. FIG. 4 is a view for explaining an embodiment of a method for mounting a spout according to the present invention.
(A) is a conceptual diagram showing a filling and packaging process, and (b) is a schematic enlarged view of a spout mounting portion.

When the size of the paper container is changed depending on the amount of contents to be filled in the paper container, the shape and size of the spout to be mounted on the paper container may be changed. For example, in the case of a gobel top type paper container, as shown in FIG. 3A, paper containers of various capacities are provided. For example,
The case (a) is a paper container for 2700 ml, and its upright section is square as shown in FIG. 3 (b), and one side of the square is 95 mm. The height of the entire paper container is 340mm
It is. Similarly, in the example of FIGS. 3A and 2B, similarly, a paper container for a capacity of 1800 ml and a paper container for 900 ml are illustrated. In each case, the length of one side of the square is 85 mm, and the height of the square is 85 mm. Depending on the size, there are 1800ml and 900ml. Further, FIG.
(A) and (c) show an example of a paper container for a small capacity, in which one side of a square is 70 mm. Thus, when filling the contents into paper containers having different cross-sectional sizes of the upright portions,
The same filling and packaging machine may also be used. In this case, parts may be replaced in the spout mounting device together with the bottom and top molded seals of the paper container. In particular, when the size of the spout changes, the spouts supplied from the parts feeder are received one by one,
The spout mounting portion to be inserted into the spout mounting hole provided in the paper container is, as shown in FIG.
The suction cup V provided with the spout assembly S supplied from the suction arm at the tip of the suction arm is connected to the inner surface of the flange portion 12 of the spout body 10 as shown in FIGS. Adhere the suction cup to the flat surface. Fig. 4 (b)
As shown in FIG. 5, the air outlet V is evacuated from the suction port T _O provided at the center of the suction cup V, the spout outlet assembly S is once taken up by the mounting arm R, returned to a predetermined position, and the paper container P _O housed in the mandrel.
Is raised, and the horizontal position of the spout S and the spout mounting hole 7 is matched, and the horizontal movement of the mounting arm R inserts the cylinder of the spout into the mounting hole of the paper container. The paper container holding the outlet S is returned to the mandrel again, and in the next step, <4> in FIG. The outer surface of the portion 12 and the inner surface resin of the paper container P _O are joined by heat fusion. The paper container equipped with the spout S is returned to the mandrel again, and the next step, FIG.
>, And then sent to the next step, FIG. 4 <6>, where the upper part is sealed by the upper molding and heat sealing plate HS to form a sealed packaging bag. Conventionally, when a spout combination S having a different size of the spout combination is mounted on a paper container, the suction port is replaced with a suction cup V suitable for the size, and the spout is attached, and the filling and packaging are performed. Was.

Accordingly, the present inventors have conducted intensive studies on a method of mounting spouts of different sizes without changing the spout mounting device of the paper container filling and packaging machine. By making the diameter of the recessed part 20 mm or less,
The object can be solved, and the present invention has been completed.

As shown in FIGS. 1 (c), 1 (d) and 1 (e), the outer edge of the suction cup is brought into close contact with the flat portion of the spout flange in order to evacuate the recess inside the spout. but is, in the formation of a vacuum system which forms during the transfer of the spout S, and the outer diameter D _V of said suction cup, the outer diameter D of the spout flange always required to be a D> D _V is there. Further, it should be understood the diameter d of the recessed portion of the outer diameter D _V and the flange of the suction cup flange is D _V> d. Further, specifically, in the delivery of the spout combination S using the suction cup V, the outer diameter of the suction cup is, for example, as shown in FIGS. is regulated by the flange size D2, the lower limit is defined by the diameter d ₁ of the recessed portion of the larger flange of the spout.

Generally, the outer diameter of the spout flange mounted on the small-volume paper container is smaller than the outer diameter of the spout mounted on the large-volume paper container. Also, the inside diameter of the small capacity spout is smaller than the inside diameter of the large capacity spout. Therefore, if the outer diameter of the suction cup is smaller than the outer diameter of the small-capacity spout and larger than the inner diameter of the large-capacity spout, there is no need to replace the suction cup, and the capacities in this range differ. Can also be used for a spout. The size of the spout cannot be largely changed due to design or functional issues. The size of the recessed portion of the flange portion is determined by the size of the opening portion, but it has not been considered much to make it as small as possible. As described above, even if the shape and size of the paper container body are changed depending on the content to be filled, even if the common device is used as is without exchanging parts of the spout mounting portion, the flange portion of the flange portion can be used. The spout can be stably mounted by defining the diameter of the recess.

Conventionally, as shown in FIG. 2A, a thin portion is provided on a bottom plate of the spout main body, and a finger ring connected to an area surrounded by the thin portion is provided. The undercut 18 was provided on the peripheral wall of the recess. By providing the undercut portion 18, the molded product is inserted into one of the molds when the male and female molds are released from the spout body at the time of molding and discharging the molded product in the molding process. To stabilize the release of the molded product from the mold. Therefore, by providing the undercut portion, the diameter d3 of the concave portion of the flange is large. Further, the thin portion may be broken by ultrasonic waves when the spout is attached to the paper container. In order to separate the thin portion and the flange portion as much as possible, the concave portion must be large as described above. Did not. Recently, by improving the mechanism for discharging the molded product from the molding die and improving the die, as shown in FIG. 2 (b), even if the diameter of the concave portion is located closer to the thin portion, The ultrasonic seal to the carton at the outlet is no longer disturbed. As a result, even if the shape of the thin portion is the same, the diameter can be made smaller than the diameter of the concave portion of the conventional spout body flange. Thus, even if the shape of the spout is diversified, the spout can be attached and used.

[0011] The inner diameter of the cylindrical portion of the spout body is equal to or slightly larger than the diameter of the recess.
There is no problem in discharging the contents even if the inner diameter of the cylindrical portion is 20 mm or less. Increasing the inner diameter of the cylindrical portion increases the outer diameter of the flange portion. For example, when the spout is mounted on the sloped panel of the gobel-top type paper container, the upper limit may be exceeded.

The method for mounting a spout according to the present invention is applicable to a spout to be mounted on a paper container having an upright horizontal cross section in the range of 50 mm × 50 mm to 100 mm × 100 mm. The vertical cross section of the upright portion does not necessarily have to be a square, and if it is not a square, its short side may be 50 mm or more and its long side may be 100 mm or less. In any case, if the length of one side of the upright portion horizontal cross section is less than 50 mm, or if it exceeds 100 mm, the shape and size of the applicable spout will be significantly changed, and it is difficult to use the present invention. .

The material of the laminate forming the paper container in the spout outlet mounting method of the present invention may be, for example, the outermost layer / paper layer /
The laminate may have a structure such as an adhesive layer / barrier layer / adhesive layer / innermost layer, and an intermediate layer may be provided between the barrier layer and the innermost layer. Further, the barrier layer or the intermediate layer may be formed of two or more layers. For example, when a specific layer structure is exemplified, (outside) LDPE25 / paper 280 /
It is like EMAA20 / VMPET12 / DL / S-PE40 (contents side). ｛Abbreviation LDPE: Low density polyethylene, EMAA
： Ethylene-methyl methacrylate copolymer, VMPET ：
Silica-deposited polyester film, DL: dry lamination, S-PE: metallocene resin, numbers after abbreviations
Indicates the thickness μm of each layer, except that paper is g / m ² ｝

It is desirable that the material of the spout combination is that the spout body and the cap are molded products using different resins having different rigidities in order to ensure the opening and closing of the cap. Furthermore, the spout body is required to be a resin that can be thermally bonded to the inner resin of the paper container. Examples of the material of the spout assembly include a combination in which the spout body is LDPE and the cap is PP.

In the spout mounting method of the present invention, the suction cup used for mounting the spout is made of synthetic rubber having good friction resistance and elasticity, such as SBR.

As long as the inner diameter of the content side of the outlet cylinder is 20 mm, there is no problem in dispensing the content. Generally, in paper containers,
When mounting the molding spout, the molding spout is supplied to the hopper of the parts feeder, and the direction of the spout is fixed in the parts feeder. ) Is sucked and fixed by the suction cup of the mounting portion, mounted at a predetermined position of the paper container, and the flange portion and the paper container are joined. The bonding at this time can use a method such as heat fusion, ultrasonic wave, or high frequency.

The concave portion inside the flange of the spout body is not necessarily a cylindrical portion, but is formed as a concave portion, and finally becomes an outflow path for the contents. As described above, according to the present invention, in order to attach the spout to the paper container, when sucking the inside of the flange, the outer diameter of the suction cup is kept constant, and even when the size of the spout changes. This method does not require replacement.

For example, when the size of the upright portion of the paper container is changed from 60 mm square to 85 mm square, in the filling and packaging machine, even if the mandrel of the paper container forming section is replaced, the size suitable for the paper container size is obtained. This eliminates the need to change the suction cup for attaching the spout to the paper container of each size, making it easy to change the model and stably inserting the paper container.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Regarding the method for mounting a spout according to the present invention, a spout combination of various sizes (pull ring type) under the conditions shown in the following examples and comparative examples is actually used for filling and packaging a gabelle top type paper container. Using a DLA2000 type machine (manufactured by D.N.K. Co., Ltd.), the spout mounting portion was attached to the spout without replacing parts. With the outer diameter of the suction cup set to 22 mm, the spout was attached and its stability was confirmed. [Example 1] Capacity 720 ml Outlet assembly Size of the flange part of the outlet body Outer dimension: 31.5 Φ Inner dimension (recess): 17.08 Φ Total height with cap fitted: 23.6 mm [Example 2] Capacity 1.800ml Flange size of the spout body Outer dimension: 35.0 Φ Inner dimension (recess): 18.17Φ Total height with cap: 24.7mm [Comparative example 1] Capacity 720ml Flange size of the spout body Outer dimension: 31.5Φ Inner dimension (recess): 20.41Φ Overall height with cap: 23.6mm [Comparative example 2] Capacity 1.800ml Size of flange of outlet body Outer dimension: 35.0Φ Inner dimension (recess ): 20.32 Φ Overall height with cap: 24.7mm

<Results> In each of Examples 1 and 2, the spout could be stably mounted, whereas in Comparative Examples 1 and 2, 1 to There was a 3% delivery error.

[0021]

According to the spout mounting method of the present invention,
When attaching spouts having different shapes and sizes to the paper container, it becomes possible to use the spouts at least in the filling and packaging machine without replacing at least the spout mounting device.
Moreover, the attachment of the spout to the paper container became extremely stable.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a container with a spout according to the spout mounting method of the present invention, (a) showing a package;
(B) It is a XX section sectional view. It is a conceptual diagram of (c) spout mounting | wearing, (d) side view of a mounting arm, (e) side view which shows the state which adsorbed the spout assembly.

FIGS. 2A and 2B are views for explaining the shape of a concave portion of a spout body, in which FIG. 2A is a cross-sectional view when an undercut is provided on a peripheral wall of the concave portion, and FIG. is there.

FIG. 3 is a diagram showing the size of the container with a spout according to the capacity thereof,
(A) Dimensional example of paper container body, (b) XX section view,
(C) An example of the dimensions of the spout is shown.

FIG. 4 is a view for explaining an embodiment of a method for mounting a spout according to the present invention, wherein (a) a conceptual diagram showing a filling and packaging step;
(B) It is a schematic enlarged view of a spout attachment part.

[Explanation of symbols]

P Container with a spout S Spout union (spout) 1 Paper container body 2 Front panel 3 Side panel 1 Slanted panel 2 Top seal 3 Bottom seal 4 Spout mounting hole 10 Spout main body 11 Tube section 12 Flange section 13 Bottom plate 14 Thin part 15 Pull ring 16 Depressed part 17 Screw 20 Cap 30 Filling and packaging machine 31 Spout mounting device 32 Filling part 33 Upper forming seal part R Mounting arm V Suction cup T Suction pipe T ₀ Suction port SH Shoot AV Anvil HH Ultrasonic oscillation NZ Filling nozzle AS Air cylinder HS Heat seal plate

Continuation of the front page (72) Inventor Kenichi Endo 1-1-1 Ichigaya-Kaga-cho, Shinjuku-ku, Tokyo F-term in Dai Nippon Printing Co., Ltd. (Reference) 3E060 AA05 AB03 BA01 BC01 BC04 CF06 DA25 EA03 3E084 AA05 AA12 AA34 AB01 BA03 CA01 CB01 CB02 CB04 CC03 DA01 DB12 DC03 EA01 EB01 EB02 EB04 FA09 FB01 FD13 GA01 GB01 GB08 GB12 GB17 KA14 KA15 KB01 LA03 LA07 LA17 LB02 LC01 LD01

Claims (2)

[Claims] 1. A method for attaching a spout comprising a cylindrical portion and a flange portion to a paper container, wherein each spout adapted to a container having a different horizontal cross-sectional angular dimension in the paper container is provided.
A method for mounting a spout, characterized in that the inner surface side recess of the flange has a diameter of 20 mm or less, so that a spout delivery portion to be mounted on a paper container can also be used. 2. The paper container according to claim 1, wherein said paper container is a goebel top type paper container, and said upright portion has a horizontal cross-section having an angular dimension of 50 × 50 to 50 × 50.
2. The method for mounting a spout according to claim 1, wherein the size is in a range of 100 × 100.