JP2000168805A - Bag-like container having spout, and its manufacture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily take out the liquid content, and to easily pour and shift it to another specified container by providing a three-dimensional tubular spout which communicates with a bag-like container body in a flat seal part area formed at least on one end part of the bag-like container body. SOLUTION: A bag-like container A is provided with at least a flat seal part 2 on an upper end part 1d of a container body 1 provided with right and left end closing parts 1a, 1b and a lower end closing part 1c. The flat seal part 2 is a thermally-fused sealed area, the seal part is flat in shape over the whole area, and a three-dimensional tubular spout part 3 to communicate with a content storage part inward of the container body 1 is provided in the sealed area. The flat seal part 2 is formed so as to seal the container body 1 along an upper end part of the container body 1, and easily tearable in the longitudinal direction of the flat seal part 2. For example, a notch 2a (notched part) is provided on one end or both ends in the longitudinal direction of the flat seal part 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bag-like container provided with a flat sealing portion for sealing at least at one end of a bag-like container body, the bag-like container having a spout at the flat sealing portion.

[0002]

2. Description of the Related Art In general, a bag-like container body is formed by folding one or two rectangular flexible plastic films into two or three or two, and then folding the two or three into three open ends. Of the two parts, the overlapping inner surface (sealant layer) of the two overlapping ends (upper end or lower end and one side end, or the upper end or lower end and the back end), or a two-sided two-sided Are formed in a bag-like shape by flattening the inner surface (sealant layer) of the three overlapping ends (heat sealant layer) of the open ends by heat and pressure with a seal bar, etc. It is. Further, one of two open ends of the cylindrical film is flatly heat-sealed and sealed to form a bag.

In the filling and packaging using the bag-shaped container body, predetermined contents are filled from an unsealed portion (opening) at the other end, and the unsealed portion of the container body is sealed with a seal bar or the like. The package is sealed in a sealed state by applying heat and pressure in a flat shape and heat sealing.

[0004] A packaging form using such a bag-shaped container body is generally called a pillow packaging (other name). In addition to this, for example, two rectangular flexible plastic films are superposed on each other. On the inner surface of the superposed film, a two-fold film folded into the container main body from a portion corresponding to the lower end flat seal portion of the bag-shaped container main body is provided, and the left and right ends and the lower end of the superposed film are provided. There is also a standing pouch or the like formed in a bag shape by flattening heat sealing.

[0005] In such a conventional bag-shaped container, for example, in the area of the flat seal portion obtained by heat-sealing sealing of the overlapping end portion performed in forming the bag-shaped container body, or after filling the contents. A non-seal portion is provided in a region of the flat seal portion obtained by heat sealing (final seal) processing of the unsealed portion to communicate in the direction of the contents storage portion of the container. A notch (notch portion) having an easy tearing property in a crossing direction, a half-cutting part, or the like is subjected to a process of imparting an easy-opening property such that the sheet can be easily cut open.

[0006]

The above-mentioned bag-like container is used as a container for packaging small-sized sachets such as soy sauce, sauce, kneaded spices and soup stock, and the container is opened. By tearing the flat seal portion, which is a portion, in the easy tearing direction and opening the non-seal portion communicating with the direction of the contents storage portion of the container that intersects the direction, the non-seal portion is used as a spout. Things can be poured out.

However, the non-seal portion as the spout of the conventional bag-shaped container is formed after opening the non-seal portion because the non-seal portion is simply provided in the flat seal portion region. Since the spout keeps the same flat shape as before opening, it has disadvantages such as difficulty in taking out contents such as liquid, and difficulty in pouring when transferring to another predetermined container.

According to the present invention, the flat seal portion of the bag-shaped container is cut off to open the non-sealed portion, and the non-sealed portion communicating in the direction of the contents storage portion of the container formed in the region is spouted. Another object of the present invention is to make it easy to take out a content such as a liquid and to pour it when transferring to another predetermined container.

[0009]

According to a first aspect of the present invention, there is provided a bag-like container having a bag-like container body having a sealing flat seal portion formed at least at one end of the bag-like container body. A bag-shaped container having a spout, characterized by further comprising a tube-shaped three-dimensionally formed spout portion communicating with the inside of the bag-shaped container body.

[0010] Next, according to a second aspect of the present invention, a laminated film in a region to be heat-sealed at one end of a bag-shaped container main body before or after filling contents is softened by a predetermined heating means. While being preheated to the temperature, it is loaded on the opposing inner surfaces of the pair of seal blocks cooled by the cooling water facing away and pressed against, and immediately air suction is performed inside the suction space on the opposing inner surfaces of the pair of seal blocks. To a negative pressure, and the softened laminated film facing the suction space is vacuum-adsorbed to the inner surface of the suction space to be cooled and solidified, and then the heating and pressurizing seal bar is operated to apply a voltage to the suction space. A bag having a three-dimensionally formed tubular spout that communicates toward the inside of the bag-shaped container body in the flat seal portion by heat-sealing the laminated film other than the portion facing the portion. A method for producing a bag-like container with a spout and forming a container.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a bag-like container having a spout according to the present invention is shown in FIG. 1 (a). Its right side view, shown in
This will be described in detail below with reference to the upper side view shown in FIG. 1C and the LL cutting sectional view of the bag-shaped container A shown in FIG. 1D.

The bag-shaped container A of the present invention has a
a, 1b, and at least a flat seal portion 2 is provided at an upper end portion 1d of a bag-shaped container body 1 having a lower end closing portion 1c.

The flat seal portion 2 at the upper end is a region that is heat-sealed and sealed by heat and pressure using a seal bar or the like. The seal portion has a flat shape over the entire region. In the seal area of the seal portion 2, there is provided a spout portion 3 formed into a tubular three-dimensionally formed shape and communicated with the inside of the content storage portion of the bag-shaped container body 1 toward the inside of the bag-shaped container body 1.

The flat seal portion 2 is formed along the upper end of the bag-shaped container main body 1 so as to hermetically seal the bag-shaped container main body 1, and easily tears in the longitudinal direction of the flat seal portion 2. I can do it.

For example, as the flexible plastic film material forming the bag-shaped container body 1, a stretched film stretched in a uniaxial direction matching the easy tearing direction may be used, or the flat seal portion 2 may be used as shown in the drawing.
A notch 2a (notch) is provided at one or both ends in the longitudinal direction of the flat seal portion 2 or a half-cutting portion (cutting line) is provided in a direction matching the easy tearing direction, so that the flat seal portion 2 can be easily formed in the longitudinal direction. It can be torn.

The tubular spout 3 formed in the sealing area of the flat seal portion 2 is provided so as to intersect the direction in which the flat seal portion 2 can be easily torn, and FIG. The flat seal portion 2 of the container A shown in FIG.
When the container A is torn in the direction, the spout 3 in the region of the flat seal portion 2 is opened in a three-dimensional cylindrical shape as shown in FIG. The seal is opened with the wearing seal maintained.

Since the spout 3 of the bag-shaped container of the present invention is formed into a cylindrical shape in the area of the flat seal portion 2, the cut-out section of the spout 2 formed by tearing and opening is formed. As shown in FIG. 1 (d), the shape is in an open state such as a circular cylindrical shape (or an elliptical cylindrical shape), so that contents such as liquid can be easily taken out, and can be easily poured when transferred to another predetermined container or the like. There are advantages.

The form of the bag-shaped container A of the present invention is as follows.
A flat seal portion 2 is formed at at least one end of the flat seal portion 2, and a spout 2 intersecting with the tearing direction of the flat seal portion 2 is formed in a region of the flat seal portion 2. It is formed in a three-dimensional cylindrical shape so as to communicate with the contents storage portion of the main body 1.

FIGS. 2A to 2E show the closed form of the left and right end closing portions 1a and 1b and the lower end closing portion 1c of the container body 1 other than the flat seal portion 2 in the bag-shaped container A of the present invention. It is a front view showing an example. The present invention is not limited to the following embodiment.

FIG. 2A shows a bag-like container A in which the left and right end closing portions 1a and 1b and the lower end closing portion 1c of the container body 1 are formed by flat seal portions 4, 5 and 6.

FIG. 2B shows the left end closing portion 1 of the container body 1.
a is constituted by a fold of a two-fold film, and two sides of a right end closing portion 1b and a lower end closing portion 1c are flat seal portions 5 and 6.
Is a bag-shaped container A constituted by:

FIG. 2C shows a bag-shaped container A in which the left and right end closing portions 1a and 1b of the container body 1 are formed by folding a cylindrical film, and the lower end closing portion 1c is formed by a flat seal portion 6. It is.

FIG. 2D shows that the left and right end closing portions 1a and 1b of the container body 1 are formed by folding a three-fold film, and the three-fold film is overlapped at the center (joint overlap portion).
Is a bag-shaped container A constituted by a back seal portion 7 and a lower end closing portion 1c constituted by a flat seal portion 6.

FIG. 2 (e) shows a rectangular flexible plastic film folded in two or two laminated layers into the inner surface of the film from the portion corresponding to the flat seal portion 6 at the lower end of the bag-shaped container body. The left and right end portions and the lower end portion of the inner surface of the two-fold film and the two-fold bottom film 8 are superimposed flat and heat-sealed to form a bag. Bag A in the form of a standing pouch,
Left and right end closing portions 1a and 1b of the container body 1 are flat seal portions 4,
5, the lower end closing portion 1c is constituted by flat seal portions 6, 6 at the overlapping portions of the lower ends of the two-ply film and the two-fold bottom film 8, respectively. Is a bag-like container A which is separated from each other and is capable of standing.

FIG. 3 shows an example of a heat sealing means for forming a flat seal portion 2 provided with a three-dimensional cylindrical spout portion 3 at at least one end of a bag-like container having a spout according to the present invention. This is described below.

As shown in the side view of FIG. 3A, the heat-sealing means includes seal blocks 11, 11 which are opposed to each other and are movably mounted in a separating / contacting direction, and a support frame F for supporting the seal blocks. , F.

As shown in the side view of FIG. 3A and the front view (inner view) of FIG. 3B, each of the opposing seal blocks 11 has a flat seal And a seal bar 12 for heating and pressing to form
(Such as a high-frequency heating sealing method, an ultrasonic heating sealing method, and an electric heating heater heating sealing method).
Heats the heat-sealed portion of the film material used for the bag-shaped container body 1 to the melting temperature of the film material.

A part of the same opposing inner surface of each of the seal blocks 11 is provided with a concave suction concave portion 13 for forming the spout 3 into a three-dimensional cylindrical shape by a vacuum forming method. When the blocks 11 are brought into contact with each other, the suction concave portion 1
A cylindrical space that is closed on one side is formed by 3 and 13.

Inside each of the seal blocks 11,
Air flow path 1 for air suction communicating with the suction concave portion 13
4 and the inside of the suction concave portion 13 becomes negative pressure by suction suction from the air outlet portion 14a side.

In the interior of each of the seal blocks 11, the vicinity of the suction concave portion 13 is cooled to room temperature or a temperature lower than the softening temperature (glass transition point) of the film material used for the bag-shaped container body 1. Cooling means 16 is provided.

The seal blocks 11 facing each other,
11 is mounted and supported by shafts 21, 21 slidable in the horizontal direction with respect to the support frames F 1, F, respectively, and is prevented from falling off from the support frames F, F by stoppers 22 attached to the ends of the shafts 21, 21. Elastic members 23, 23 (pressing members at the time of heat sealing) are attached to the shafts 21, 21, respectively.
1 and 11 are biased in directions approaching each other.

In the present invention, one of the seal blocks 11, 11 may be fixedly attached to and supported by the support frame F, and the shaft 21, the stopper 2,
2. The elastic member 23 and the like can be omitted.

One or both of the support frames F are movable by a predetermined actuator (not shown) such as an air cylinder (hydraulic cylinder) or a rack and pinion gear. The opposing inner surfaces of the opposing seal blocks 11, 11 can be separated, approached or contacted (pressed).

FIG. 4 shows another example of the heat fusion means.
As shown in the side view of (a) and the front view (inner view) of FIG. 4 (b), the heating and pressurizing seal provided on substantially the entire lower surface of the opposing inner surface of each opposing seal block 11 is provided. A non-heated portion 15 which is a non-heated area without the seal bar 12 is provided along the lower end of the bar 12, and when the flat seal portion 2 is formed, the non-heated portion 15 causes the superposed film to be flat-sealed portion 2. Only the pressing and holding may be performed in order to fix and hold along the lower end of the.

The method of forming a three-dimensional cylindrical spout in the area of the flat seal portion of the bag-shaped container A having the spout according to the present invention is shown in the side sectional views of FIGS. 5 (a) to 5 (d). This will be described according to the process chart.

First, a region to be heat-sealed at the upper end 1d of the superposed film of the bag-shaped container body 1 is heated to a softening temperature by a predetermined heating means (not shown). continue,
As shown in FIG. 5 (a), immediately before the filling of the contents or after filling, the upper end 1d of the superposed film of the bag-like container body 1 is filled.
The area to be heat-sealed is mounted on the opposing inner surfaces of the sealing blocks 11 and 11 facing each other.

Subsequently, as shown in FIG. 5 (b), the seal blocks 11, 11 are relatively approached to each other, and the upper end 1d of the superposed film of the bag-shaped container body 1 is sealed.
The inner surfaces 1 and 11 are pressed and pressed against each other.

Subsequently, as shown in FIG. 5 (c), the area to be heat-sealed at the upper end 1d of the superposed film of the bag-like container body 1 heated to the softening temperature is sealed with sealing blocks 11 and 11. In a state in which the suction concave portions 13 and 13 are pressed against each other, the air in the suction concave portions 13 and 13 is sucked from the air flow path 14 by a predetermined vacuum means (not shown).
3 is set to a negative pressure, and the superposed film of the upper end 1d of the bag-shaped container body 1 at the portion facing the suction concave portion 13 is cooled at a predetermined cooling temperature (e.g.
(5 ° C. to 25 ° C., about 25 ° C. to 30 ° C.) is vacuum-adsorbed to the inner surface of the suction concave portion 13 of the seal block 11 and solidified by cooling.

Subsequently, the seal bar 12 for heating and pressurizing (high-frequency heating sealing method, ultrasonic heating sealing method, etc.) is operated by applying a voltage, so that the bag-shaped container body 1 other than the portion opposed to the suction concave portion 13 is formed. Laminated film upper end 1
The flat seal portion 2 is formed by heat-sealing the area to be heat-sealed in d.

[0040]

According to the bag-like container having the spout of the present invention, the spout is formed by cutting and opening the spout since the spout is cylindrically formed in the area of the flat seal portion 2. The open cross-section of the cut section is secured, such as a circular cylinder (or an elliptical cylinder), so it is easy to take out the contents such as liquid from the bag-shaped container, and pour when transferring to another predetermined container. There are effects such as easy.

[Brief description of the drawings]

1 (a) is a front view of a bag-like container having a spout according to the present invention, (b) is a side view thereof, (c) is a top view thereof, and (d).
Is a top cross-sectional view of the bag-like container in a state where the bag-like container has been cut open.

FIGS. 2A to 2E are front views showing various sealing forms of a bag-like container having a spout according to the present invention.

FIG. 3 (a) is a side view of a heat sealing means used for forming a flat seal portion of a bag-like container having a spout and a spout portion of the present invention, and FIG. FIG. 4 is a front view of one seal bar of the fusing unit.

FIG. 4 (a) is a side view showing another example of the heat-sealing means of the flat seal part of the bag-like container having the spout and the heat-sealing means used for molding the spout part of the present invention. b) is a front view of one seal bar of the heat sealing means.

FIG. 5 is a process diagram for explaining a step of forming a heat-sealing seal of the flat seal portion of the bag-like container having a spout and a process of forming the spout.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Bag-shaped container main body 1a, 1b, 1c ... End closing part 1
d top end 2 flat seal 2a notch 3 three-dimensional cylindrical spout 4, 5, 6 flat seal 7 back seal 8 bottom film 11 seal block 12 seal bar 13 suction Recessed part 14 ... Air flow path 15 ... Non-heating part 16 ... Cooling means A ... Bag-shaped container F ... Support frame

Claims (2)

[Claims] 1. A bag-shaped container having a flat seal portion for sealing formed at least at one end of a bag-shaped container body, wherein a tubular solid body communicating with the interior of the bag-shaped container body is formed in the flat seal portion region. A bag-like container having a spout, comprising a molded spout. 2. A cooling method in which a superposed film in an area to be heat-sealed and sealed at one end of a bag-shaped container body before or after filling of contents is preheated to a softening temperature by a predetermined heating means, while being opposed to each other. The pair of seal blocks cooled by water are loaded on opposing inner surfaces of the pair of seal blocks and pressed against each other. Immediately, the inside of the suction space on the opposing inner surfaces of the pair of seal blocks is made to have a negative pressure by air suction to oppose the suction space. The overlapped film that has been softened at the part to be vacuum-adsorbed to the inner surface of the suction space is solidified by cooling, and then the sealing bar for heating and pressurizing is operated to apply voltage to remove the overlapped film other than the part facing the suction space. A heat-sealing seal to form a bag-like container having a tubular three-dimensionally formed spout port communicating with the inside of the flat-shaped seal portion toward the inside of the bag-shaped container body; Method for manufacturing a bag-like container with a mouth.