JP2001301778A - Container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a container to be manufactured by minimizing as far as possible the quantity of scrap cut pieces as industrial wastes generated out of an inflation tube, easily recognizable in use and scarcely generating errors in use. SOLUTION: The bag-shaped container 1 is formed by heat sealing at least a given position in the width direction of the inflation tube 2 composed of a flexible plastic formed continuously into a cylindrical shape and cutting off a heat sealing zone 3 in the width direction to form an upper section and a bottom section of the container separated each other, and the heat sealing zone 3 on the bottom side of the container 1 is formed into an almost recessed shape having a recess facing downward, and the recess is left as it is as an unsealed section 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a container formed from a continuously formed inflation tube at a reasonable cost by minimizing material waste.

[0002]

2. Description of the Related Art In recent years, a bag-shaped container formed from a continuously formed tubular inflation tube (hereinafter simply referred to as "tube") has been widely adopted in the pharmaceutical industry and the like. For example, a bag-shaped container described in JP-A-5-104662 corresponds to this. In these containers, when heat-sealing a predetermined portion of the inflation tube in the width direction of the tube, first, an unsealed portion is formed so as to be formed across the entire width in the width direction by being sandwiched between the heat-sealed regions. Thereafter, a predetermined portion of the unsealed portion and the heat-sealed area is cut into a predetermined shape so that the rough shape of the upper portion of the bag-shaped container formed into a shape having a neck portion and the rough shape of the container bottom portion are simultaneously formed. . Further, a hard plastic port is fitted into the unsealed portion (opening) for forming the neck at the upper portion of the container formed by cutting, and this is welded to the unsealed portion, and a lid or the like is attached to the port opening. It is provided as a finished product of a bag-shaped container that can be opened freely.

[0003]

However, in the container described in Japanese Patent Application Laid-Open No. 5-104662, when a tube is cut as shown in FIG. 2, a neck portion which is a part of the container is left as an unsealed portion. Since a port is inserted and welded into the container to complete the container, it is unavoidable that a large amount of chip removal occurs at the time of cutting.
Therefore, not only will that part be wasted tube material, but if these are discarded as they are as chips,
There was a problem that environmental pollution was newly concerned. Conventionally, a container having a shape in which the bottom of the container is entirely heat-sealed has been widely used in medical sites and the like, and the shape of the container has few features. Has the drawback that the container is easily confused and misused. In view of the above, the present invention provides a container which can be manufactured by continuously reducing the cut-away portion to be discarded and reducing the problem of environmental pollution when continuously manufacturing a bag-shaped container from an inflation tube. The object of the present invention is to provide a container which can be used less at medical sites and the like.

[0004]

In order to solve the problems of the above-mentioned conventional container, the container of the present invention is provided with at least a predetermined position in the width direction of a soft plastic inflation tube which is continuously formed into a cylindrical shape. In a bag-shaped container which is heat-sealed and cut off the heat-sealing area in the width direction and cut off and formed as an upper part and a bottom part of the container, the heat-sealing area on the bottom side of the container has a substantially concave shape with a downward depression. In addition, the container is characterized in that the hollow is formed as an unsealed portion. At this time, both sides of the inflation tube may be heat-sealed, or a substantially cylindrical port may be fitted and welded at a predetermined position in the upper heat-sealing area. By forming in this way, it is possible to suppress the generation of pinholes that occur on both sides of the container during storage and transportation of the container after manufacturing, and also to make it easy to fill and extract liquid chemicals and foods. Suitable containers can be used.

Next, the operation of the container of the present invention will be described with reference to the schematic manufacturing steps. The heat sealing member is pinched by moving the heating seal member closer to the inflation tube fed between the opposed heat sealing members, and heat sealing is performed in the width direction of the tube and on both sides thereof. At this time, the plane shape of the holding surface of the heat seal member in the tube width direction is previously made concave, and the subsequent cutting is performed at a position crossing the unsealed portion (dent) of the heat seal area heat-sealed in the concave shape. . That is, by performing the cutting process as described above, the heat sealing area in the width direction is formed as the upper portion and the bottom portion of another bag-shaped container, and is separated at the cutting position. At this time, the heat seal area serving as the bottom of the container is formed in a substantially concave shape with a downward dent, the dent remains as it is as an unsealed part, and the entire area of the bottom is easily heat-sealed with a special shape that is not heat sealed. Formed as a container. Further, an unsealed portion having a width equal to the width of the unsealed portion at the bottom of the container is formed at the cutting position of the heat seal region which is the upper portion of the container. Since the unsealed portion at the upper portion of the container is formed as an opening communicating with the inner cavity of the container, the unsealed portion can be used as a filling / discharging port for the container-stored articles. In addition, the opening can be provided as a container having a function as a filling / discharging port of the container storage article further enhanced by fitting and welding a hard cylindrical port or the like.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to embodiments shown in the drawings. FIG. 1 shows a bag-shaped container 1 according to the present invention.
1A shows a state in which a predetermined portion (both sides and width direction) of the inflation tube 2 is heat-sealed, and FIG. 1B shows a state after perforation, cutting, and shaping.
FIG. 1C shows the state after completion, and FIG.
Is the enlarged plane. As shown in FIG.
After cutting along the line XX in (A), each bag-shaped unfinished container is cut off at four corners in an arc shape and shaped, so that the cut pieces are extremely small chips in the forming process. 6 occurs at the time of shaping. Further, as shown in FIG. 1 (C), the bag-like container 1 after completion has heat-sealed areas 31 and 3 on both sides and upper and lower ends.
A port 4 made of a hard resin cylinder is fitted and welded to the unsealed portion (opening) 7 of the shoulder portion 8 of the upper seal region 32 of the upper seal region 32. Holes 5 and 5 for hanging and using the bag-shaped container 1 are drilled at predetermined positions. The container 1 of this embodiment has a width 12
The heat seal area 31 is formed to have a shape of 0 mm and a side length of about 200 mm, and furthermore, has a concave heat seal area 31 which is recessed downward at the bottom thereof. In the embodiment of the container of the present invention, the heat sealing areas 3 and 3 are also provided on both sides of the bag-shaped container 1 because pinholes are easily generated on both sides of the container 1 during storage and transportation after completion. This is to prevent it. Further, a scale and a required display are printed on the surface of the container 1 in an area surrounded by a broken line in FIG.

FIG. 2 shows the state of the molding process of the conventional bag-shaped container 1 with the same reference numerals assigned to the same portions for comparison with the container 1 according to the present invention. (A) '
2B shows a state where the width direction of the inflation tube 2 is heat-sealed, and FIG.
FIG. 2C 'shows the completed state. As shown in FIG. 2 (A) ′, in the conventional molding of the container 1, first, only the width direction of the inflation tube 2 is heat-sealed. At this time, heat-sealed areas 3 and 3 are formed, and the unsealed portion 7 is a tube 2 between the heat-sealed areas 3 and 3.
Is formed over the entire width in the width direction. Therefore, cutting and shaping after heat sealing are shown in FIG.
As shown in ′, the cutting is performed by cutting the unsealed portion 7 into a predetermined shape so that the neck portion 9 is formed in the cut bag, so that a large amount of cut pieces 6 are naturally generated and discarded. Are generated in large quantities. In addition, as shown in FIG. 2C ', the conventional bag-shaped container 1 after completion does not have the bottom unsealed region 7 of the container 1 of the present invention formed in the bottom heat-sealed region 31, and the shoulder portion 8 The port 4 made of a hard resin cylinder is fitted into the protruding neck 9 and is welded integrally with the neck 9 of the bag. As described in the above embodiment, the container of the present invention can suppress the generation of cut pieces to a very small amount as compared with the conventional container when manufacturing the container, and heat seals the bottom which is not provided in the conventional container. This is a container having an unsealed portion in an easily distinguishable shape.

[0008]

According to the container of the present invention, a substantially concave heat-sealed area is formed at the bottom of the container, and the concave portion is formed as an unsealed portion. The cutting of the inflation tube can be easily performed by simply cutting off the unsealed portion, and the amount of cut pieces generated at the time of cutting can be reduced. Therefore, manufacturing costs such as material costs can be reduced. Also, since the amount of chips to be discarded is reduced, it can be provided as a container with less problems associated with industrial waste treatment. Furthermore, when used, the hollow portion is formed at the bottom edge of the seal, so that it can be easily distinguished from other containers, and an excellent effect of preventing misuse due to confusion can be obtained.

[Brief description of the drawings]

1 (A), 1 (B), and 1 (C) are a plan view of a tube and a plan view of a finished product, showing one step in manufacturing a container of the present invention.

FIGS. 2 (A) ′, (B) ′, and (C) ′ are a plan view of a tube and a plan view of a completed product of a conventional container, showing a process of manufacturing a conventional container.

FIG. 3 is an enlarged plan view showing a finished product of one embodiment of the container of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bag-shaped container 2 Inflation tube 3 Heat seal area 4 Port 5 Hole 6 Chip (cut piece) 7 Unseal part 8 Shoulder 9 Neck 31 Bottom heat seal area 32 Upper heat seal area 33 Port heat seal area

Claims (4)

[Claims] At least a predetermined position in the width direction of a soft plastic inflation tube which is continuously formed into a cylindrical shape is heat-sealed, and the heat-sealing area in the width direction is cut to form a cutout as an upper part and a bottom part of a container. A container characterized in that the heat-sealed area on the bottom side of the container has a substantially concave shape with a downward depression, and the depression is left as an unsealed portion. 2. The container according to claim 1, wherein both sides of said inflation tube are heat-sealed. 3. The container according to claim 1, wherein a substantially cylindrical port is fitted and welded at a predetermined position in a heat sealing area on an upper side of the container. 4. The container according to claim 1, wherein the container is filled with a drug solution and the opening of the port is sealed.