JPH05147670A - System for manufacturing tetrapack - Google Patents

Abstract

PURPOSE:To enable a single process to be used for manufacturing various tetrapacks having tug strings attached at different positions which bear subtly on the effect on the extraction of their contents by using as preformed materials for bags sit sheets differing in position for attaching tug strings. CONSTITUTION:The subject relates to the manufacture of a tetrapack wherein a sheet for extraction 1 provided in a long, narrow cylindrical form is sealed and cut breadthways at regular intervals and fusion is effected in a manner that adjacent sealed lines cross each other perpendicularly. As a preformed material for a bag a unit sheet for extraction 5 is prepared; this unit sheet 5 is provided with a tug string 2 which has a thumbpiece 13 at the loose end and has its base end 3 attached to an edge 14, shaped like one of an envelope, and at an intermediate point between sealed lines 15, 15'. Variants of such a unit sheet are also formed, such as a unit sheet 9 having the base end 3 of a tug string 2 attached to the point 8 where a sealed line 15 meets the edge 14 of the unit sheet and one having the base end 3 attached to a point on a sealed line 15 (not shown in Diagram). These unit sheets for extraction 5, 9 can be handled by a single kind of process to produce three kinds of packs.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a bag making system for Tetra Pak for palatable beverages such as coffee and seasonings, and Tetra Pak in a deformed form after filling with coffee or the like when removing external force or immersing in hot water. Then, the present invention relates to a tetra pack having a function of restoring the shape before deformation.

[0002]

2. Description of the Related Art Conventionally, it has been known that when using Tetra Pak in which coffee, green tea or the like is enclosed, there are subtle differences in appearance, handling or extraction effect depending on the attachment position of the tag thread. Further, packs with different attachment positions of tag yarns are made in separate bag-making steps, and there is no known system capable of producing various packs having different attachment positions of tag yarns in the same bag-making step.

When a palatable beverage such as coffee or a seasoning is enclosed in a Tetra Pak and then to be packaged, it is usually folded flat and placed in a packaging bag. When the normal tetra-pack shape is maintained, when extracting coffee or the like enclosed inside, the inside of the pack is mixed with hot water, stirred, and the like, so that an excellent extraction effect is obtained.

However, after the coffee is usually enclosed,
In the process of storage and distribution, it is in a flat folded state. Therefore, when taken out at the time of use, it has a crushed shape, and the folded portion has many wrinkles. Alternatively, there is also a method of packaging by directly putting it in a flat outer bag without folding it into a fixed shape during outer packaging, but in this case, many irregular wrinkles are generated in the tetra pack and the shape of the pack is pressed flat. It has been crushed. Therefore, when used in this amount, the effect of packing in a tetragonal tetra pack cannot be sufficiently exerted.

However, until now, no effective solution has been known to solve these drawbacks.

[0006]

When making a Tetra Pak enclosing a palatable beverage such as coffee or a seasoning, various packs having different tag thread attachment positions may be made in the same pouch making step. The system and the Tetra Pak whose shape is crushed at the stage of storage and distribution after enclosing the contents or with many wrinkles, returns to the shape before deformation when immersed in hot water at the time of use, It is intended to provide a pack in which the extraction effect of Tetra Pak can be sufficiently exhibited.

[0007]

Means for Solving the Problems In order to produce various tetra packs having different attachment positions of tag yarns by a simple process, the present inventor has attached position of tag yarns to a sheet for extracting bag making raw materials, and As a result of studying the relationship between the shapes of Tetra Pak after bag making, we have developed a system that can be processed in the same bag making process simply by changing the attachment position of the tag yarn on the extraction sheet.

[0008] Further, when the Tetra Pak which has been crushed or has a large number of wrinkles at the stage of storage and distribution after enclosing the contents is immersed in hot water at the time of use, the shape before deformation is obtained. The present invention has been achieved as a result of an examination on a method of imparting a property that reverts to.

That is, an elongated envelope-shaped extraction sheet 1
Are sealed and cut in a line at right angles to the length direction at regular intervals, and the adjacent seal lines are orthogonal to each other. From the sheet 5 in which 3 is attached to the intermediate region 4 of the adjacent seal line of the extraction sheet 1, the tetra pack 10 in the shape in which the tag yarn is attached in the plane of the triangle forming the tetra pack, A sheet in which a base 7 is attached to a seal line 6, a tetra pack 11 having a shape in which a tag thread is attached to a ridge of a tetra pack, and a base of a tag thread is further attached to an intersection 8 between the seal line and an end of the sheet. The Tetra Pak is characterized in that three types of packs, namely, Tetra Pak 12 having a shape in which a tag thread is attached to the apex of the Tetra Pak can be manufactured by the same bag manufacturing process from 9 It is a bag system.

Further, in a tetra-pack in which a favorite beverage or seasoning is enclosed in a tetrahedron composed of an extraction sheet, at least one ridgeline or apex and the line connecting the bases thereof are made of an elastic material or deformed. Even if it is a tetra pack for a palatable drink or a seasoning, it is made of a material having a shape memory property that restores the shape before deformation when immersed in hot water.

Here, Tetra Pak is recently coffee,
It refers to a form in which the contents are packed into a tetrahedron, such as used in milk containers. The palatable beverages include coffee, black tea, cocoa, oolong tea, green tea, barley tea, kelp tea, and the like, and seasonings include bonito flakes, shiitake mushrooms, dashi kelp,
It includes dried sardines. The present invention will be described in detail below.

In the case of making a normal packaging bag, a long envelope-shaped extraction sheet is linearly sealed at regular intervals in a direction perpendicular to the lengthwise direction and at the same time cut at that portion. A flat bag is obtained. Usually, after sealing one side, the contents are inserted, and then the other side is sealed to be used as a flat bag. Also, in the case of making a bag in a tetra pack, in this step, one seal line is attached in the same manner as described above, and the other seal line is attached first so that an envelope-shaped sheet is sandwiched from both ends. If sealing is performed in a direction orthogonal to the seal line, that is, perpendicularly to the original sheet surface, a tetrahedral so-called tetrapack shape is obtained.

When a palatable beverage or seasoning is enclosed in a Tetra Pak for extraction and used, stirring and mating are performed inside the pack as compared with a normal flat bag, so that there is a considerable difference in the extraction effect and taste. There is a feature that cannot be obtained with a flat bag.
Further, when the tag yarn is attached in the triangular plane of the tetra pack, when it is attached to the ridgeline or to the apex of the back, there are subtle differences in handleability, extraction effect, taste and the like.

In the present invention, an elongated envelope-shaped extraction sheet is used as a material for making a Tetra Pak bag. The material of the extraction sheet is not particularly limited as long as it can be used for extraction of palatable beverages such as coffee, tea and green tea and seasonings,
A wide range of extraction sheets can be used. For example, it is a woven fabric, a knitted fabric, a non-woven fabric, a filter paper, a Japanese paper, or a laminated body thereof.

[0016] Tag yarns are usually attached to Tetra Pak for extracting palatable beverages and seasonings, but in the present invention, it is preliminarily set at a specific position of an elongated envelope-shaped extracting sheet to be supplied to the bag making process. By using three types of sheets with attached tag yarns, it is a system that enables bag making in multiple forms by attaching tag yarns to different parts of the tetra pack in the same manufacturing process.

Next, the construction and function of the bag making system of the present invention will be specifically described with reference to the drawings.

FIG. 1 is a front view of an embodiment of an extraction sheet used in the bag making system of the present invention. The extraction sheet 1 shows a state in which a tubular sheet is made into an envelope shape, and the base portion 3 of the tag yarn 2 having a knob 13 at the tip has an envelope end portion.
Above 14 is the shape 5 attached to the intermediate region 4 of the seal lines 15 and 15 '. Also, it is not always necessary to fix the tag thread and the knob to the sheet, but if not fixed it often causes troubles in the bag making process, so the tag thread should be brought into close contact with the sheet and the knob should be peeled off very easily. It is preferable to adhere to. When the knob is fixed to the sheet, the shape of the tag yarn may be the length direction of the extraction sheet, the right angle direction, or another direction.

The structure of the bag making process is not particularly limited, but for example, a system in which the extraction sheet flows in the up and down direction and the sealing portion is fused and cut at the same time by an ultrasonic fusing device is also possible. In such a device, two sealers are horizontally arranged with a constant space therebetween, and are at an angle so as to be orthogonal to each other. First, the portion of the seal line 15 on the sheet surface is sealed, the contents such as coffee and tea are inserted into the inside from the upper part, and then the contents are inserted, and the upper edge of the envelope-shaped sheet which is inflated to some extent is guided. By the mechanism, it is folded in the direction orthogonal to the above seal portion, and that portion 15 '
By sealing, a tetrapack-shaped package is obtained.

The Tetra Pak thus obtained is shown in FIG.
As shown in (1), the tag yarn has a shape that is attached within the surface of a triangle that forms a tetra pack. The attachment position of the tag yarn can be attached at any position in the plane of the triangle by appropriately selecting the 4 positions of the raw material extraction sheet. However, when the pack is attached to the center of the triangle, it has the best balance and is easy to handle when the pack is put in a cup, a pot or the like with a finger grip.

Next, the extraction sheet 7 shown in FIG. 3 has the same structure as the sheet 5 shown in FIG. 1 except that the attachment position of the base portion 3 of the tag yarn 2 to the sheet is different. In this sheet, the base 3 of the tag thread is attached at position 6 on the seal line 15.

When this extraction sheet is subjected to the same bag-making process as described above, the tag yarn has a shape attached to the ridgeline of the tetra pack as shown in FIG. As for the attachment position of the tag thread, the 6th position of the raw material extraction sheet is a seal line.
It can be attached at any position on the ridgeline by selecting it appropriately on 15. However, when it is attached to the center of the ridgeline, it is in the most balanced and easy-to-handle form when the pack is put in a cup, pot or the like by holding the knob with fingers.

Further, the extraction sheet 9 shown in FIG. 5 has the same structure as the sheet 5 shown in FIG. 1 except that the attachment position of the base portion 3 of the tag yarn 2 to the sheet is different. In this sheet, the base 3 of the tag thread is attached at the intersection 8 of the seal line 15 and the edge of the sheet.

When this extraction sheet is subjected to the same bag-making process as described above, the tag yarn has a shape attached to the apex of the tetra pack as shown in FIG. This is the most balanced form when you put the pack in a cup, pot, etc. with your fingers.

FIG. 2 shows a form corresponding to the case where the tag yarn is attached to an arbitrary position of the Tetra Pak, which is the most commonly used form. When the pack is dipped in a pot or the like by holding the tab of the tag thread with a finger, the resistance is the smallest and the dipping is easy. FIG. 4 shows a form in which the resistance is the same when the pack is put in a teapot or a coffee cup and moved up and down for extraction, and when it is raised and lowered. Figure 6
Is a form in which the pack is put in a teapot or the like and the resistance when moving up and down is large, and the resistance when lifting is small. Depending on the nature of the contents, a combination of these can give a subtle variety of tastes.

As described above, according to the present invention, by using the extraction sheet shown in FIGS. 1, 3 and 5 as a bag-making raw material, it is possible to carry out the same bag-making process as shown in FIGS. And three types of Tetra Pak shown in FIG. 6 can be made.

The invention described in claim 2 of the present application relates to a tetra pack having a property of returning to a pre-deformation shape when immersed in hot water when using a tetra pack having a deformed shape during storage and distribution. It is a thing.

When coffee, black tea, etc. are enclosed in a Tetra Pak and immersed in a teapot or the like, the extraction effect is superior to that of an ordinary flat pack, because stirring and mating are performed inside the Tetra Pak, but Since it has a bulky shape, it tends to be folded or crushed during the storage and distribution process, and therefore the effect of packaging in a square tetra pack cannot often be exerted during use.

According to the present invention, at least one ridgeline or apex and a line connecting the bottom and the line connecting at least one ridgeline or apex of a tetra-pack which is filled with a palatable beverage such as coffee or a seasoning and is composed of an extraction sheet is made of an elastic material. Alternatively, the pack is made of a material having a shape memory property, which is restored to the shape before the deformation even when it is deformed and immersed in hot water.

Here, the ridges and vertices of Tetra Pak may be any ridges or vertices. It may be applied to only one ridge line or a large number of ridge lines. Alternatively, it may be applied to one or many lines connecting the top of Tetra Pak and its bottom.

As a material having high elasticity, it can be widely used as long as it has a property of returning to a shape before deformation when an external force is removed, when the pack is folded or crushed. Examples thereof include synthetic fiber monofilaments having low hygroscopicity, such as thick polyester monofilaments, polypropylene monofilaments, nylon monofilaments, and rubbers having a glass transition point.

A thermoplastic elastomer having a plurality of glass transition points can be used as a material having a shape memory property, which is restored to its original shape when immersed in hot water even if it is once deformed. .. In the case of the present invention, among a plurality of glass transition points, the high temperature is 50 to 70 ° C.
Are preferred. Examples thereof include polynorbornene and styrene block copolymers.
Further, among the superabsorbent polymers, a polymer which is sensitive to heat and whose gel structure changes with temperature, a so-called thermoresponsive polymer can also be used, and examples thereof include N-acryloylpyrrolidine and N-isopropylacrylamide.

The form in which these polymers are applied to Tetra Pak is not particularly limited, but it is preferable to use a thick monofilament in which the polymer is fused and used on the line connecting the ridge line or apex of Tetra Pak to its bottom side.

FIG. 7 shows a form in which a polyester monofilament is fused to two ridgelines 16 and 17 of a tetra pack made of thin nylon gauze, and FIG. 8 shows a tetra pack made of thin polyester gauze. Two ridges
It shows a form in which polynorbornene rubber filaments having a high glass transition point of 65 ° C. are fused to 18 and 19 and a line 20 connecting the apex and the bottom thereof.

Whether using a highly elastic material, using a filament of a shape memory polymer, when the external force is removed during use or when immersed in hot water, the shape before deformation is easily recovered. Therefore, the effect as a tetra-pack type extraction pack can be sufficiently exhibited.
When a highly elastic material is used, when it is deformed by an external force, stress is applied to Tetra Pak, but in the case of a shape memory polymer, its plasticity deforms and stress does not occur, so that it can be used for packaging and transportation. It is preferable in handling at the distribution stage.

In any case, since it can be handled as a small form that is folded or crushed at the stage of storage and distribution, the economical efficiency can be significantly improved.

[0036]

According to the Tetra Pak bag making system of the present invention, three kinds of different Tetra Pak can be made in the same bag making step by using the bag making material sheets having different tag thread attachment positions. You can Further, when the deformed Tetra Pak is immersed in hot water, it returns to the shape before the deformation, and the effect of Tetra Pak can be sufficiently exhibited.

[Brief description of drawings]

FIG. 1 is a front view of an aspect of an extraction sheet used in the bag manufacturing system of the present invention.

FIG. 2 is a perspective view of an embodiment of Tetra Pak obtained by the bag making system of the present invention.

FIG. 3 is a front view of an aspect of an extraction sheet used in the bag manufacturing system of the present invention.

FIG. 4 is a perspective view of an embodiment of Tetra Pak obtained by the bag making system of the present invention.

FIG. 5 is a front view of one embodiment of an extraction sheet used in the bag making system of the present invention.

FIG. 6 is a perspective view of an embodiment of Tetra Pak obtained by the bag manufacturing system of the present invention.

FIG. 7 shows a perspective view of one embodiment of Tetra Pak having a shape recovery property of the present invention.

FIG. 8 shows a perspective view of one embodiment of the tetra-pack having shape recoverability of the present invention.

[Explanation of symbols]

1 Extractable sheet for bag-making raw material 2 Tag yarn 3 Base of tag yarn 4, 6, 8 Attachment position of base of tag yarn 5, 7, 9 Extraction sheet for bag-making raw material with tag yarn attached 10, 11, 12 Tetra Pak 13 Tag thread knob 14 Edge of extraction sheet for bag making material 15, 15 'Seal line 16, 17 Polyester monofilament 18, 19, 20 Polynorbornene rubber filament

Claims (2)

[Claims] 1. A tetrahedral sheet is formed by sealing and cutting a long, narrow envelope-shaped sheet for extraction 1 at regular intervals in a line at right angles to the length direction, and by making adjacent seal lines orthogonal to each other. Tag yarn 2 in the process of making a bag
From the sheet 5 in which the base 3 of the above is attached to the intermediate area 4 of the adjacent seal line of the extraction sheet 1, the tetra pack 10 in the shape in which the tag yarn is mounted in the triangular plane forming the tetra pack, From the seat 7 in which the base of the thread is attached on the seal line 6, the tetra pack 11 in the shape in which the tag yarn is attached to the ridge of the tetra pack, and the base of the tag yarn is attached to the intersection 8 of the seal line and the end of the sheet. From the seat 9, three types of packs, the Tetra Pak 12 in which the tag thread is attached to the top of the Tetra Pak,
The Tetra Pak bag-making system is characterized by being able to make bags in the same bag-making process. 2. A tetrahedron in which a favorite beverage or seasoning is enclosed in a tetrahedron composed of an extraction sheet, and at least one ridgeline or apex and a line connecting the bottom thereof are made of an elastic material or deformed. Even if it is soaked in hot water, it is made of a material having a shape memory property that restores the shape before deformation, and Tetra Pak for a palatable beverage or seasoning.