JPH0141334B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an infusion bag made of a soft plastic sheet used for infusing medicine, blood, etc. into the human body, and a method for manufacturing the same.

(Prior art) Infusion bags, which are made by joining two soft plastic sheets together into a bag shape, are gradually becoming popular in place of infusion bottles because they do not require the use of pneumatic needles during infusion. Infusion bags are made by sandwiching a plastic cylinder between two soft plastic sheets to form a spout, so they cannot be joined on a flat surface, resulting in poor bonding around the spout. There was a drawback that this was likely to occur.

(Problems to be Solved by the Invention) The problem to be solved by the present invention is to solve the above-mentioned drawbacks of the conventional infusion bag, eliminate the risk of poor bonding around the spout, The first and second inventions of the present application provide a structure of an infusion bag and a method of manufacturing the same for this purpose.

(Means for Solving the Problem) The first invention of the present application is composed of three sheets of soft plastic sheets, a side plate and a bottom plate, and the bottom seam line formed between the side plate and the bottom plate is asymmetric. In addition to sealing it diagonally into a bag shape, a spout is provided protruding from the corner where the bottom seam line of one side plate is on the downward side, and a spout is provided at the diagonal corner of the spout on both side plates. The second invention of the present application relating to the method for manufacturing the suspension part is characterized in that the hanging part is transparent, and the second invention of the present application relates to the method of manufacturing the same, after joining the spout at a predetermined interval to the end part of the soft plastic sheet forming the side plate. The soft plastic sheet is continuously connected to the other soft plastic sheet forming the other side plate and the soft plastic sheet forming the bottom plate by positioning the spout at a corner part on the down side of the seam line of the bottom part which runs diagonally. A bag-like body made of three sheets with an open mouth is formed by pasting them together on a flat surface, and after filling the bag with liquid, the mouth is sealed and a hanging part is transparently provided at the corner diagonally to the spout. It is characterized by:

Embodiments Next, the present invention will be explained in detail with reference to illustrated embodiments.As shown in FIGS. Two side plates 1 made of highly durable soft plastic sheets,
2 and a bottom plate 3 are sealed into a bag-like three-sheet bag. The bottom plate 3 is made of a rectangular flat sheet, and can be folded into a flat shape when its both sides are joined to the lower part of the side plates 1 and 2, but when filled with the inner solution, the weight of the bottom plate
As shown in the figures and FIG. 2, the lower part bulges outward and becomes self-supporting. In the illustrated three-sheet bag, the bottom seam line 4 is formed between the side plates 1, 2 and the bottom plate 3, and is formed in an asymmetrical oblique manner from one side to the other as shown. A spout 5 made of rubber or elastic plastic is protrudingly provided at the corner of the bottom of one side plate 1 where the seam line 4 is on the downward side. The spout 5 has a planar joint 6 at its base, and the joint 6 is joined to the side plate 1 by heat sealing, high frequency sealing, or adhesive. A cutout 8 with a tension knob 7 is formed. Further, a bead-shaped annular protrusion 10 is formed on its outer periphery to provide rigidity, and a rubber stopper 9 for penetrating an infusion needle is inserted in advance inside the bead-shaped annular protrusion 10. A hanging part 11 is transparently provided at a diagonal corner of the spout 5, passing through both side plates 1 and 2. The hanging part 11 is a part for hanging the infusion bag from a hanging fixture in a hospital room, etc., and can have any shape.

Next, the method for manufacturing the infusion bag of the present invention will be explained with reference to FIG. 4. First, through holes are formed at predetermined intervals in the end portion of a roll-shaped soft plastic sheet 20, and then the above-mentioned joints are formed. 6 is aligned with the through hole and bonded by any method such as heat sealing, high frequency sealing, bonding with adhesive, etc. Or soft plastic sheet 2
The spout 5 is directly joined at a predetermined interval without forming a through hole in the end portion of the 0. If a through hole is not formed, temporarily connect the joint 6 and the soft plastic sheet 2.
Even if the bonding with 0 is incomplete, there is an advantage that contamination of the content liquid from the outside can be prevented. Next, a soft plastic sheet 22 of the same width is superimposed on the back surface of this soft plastic sheet 20, and a soft plastic sheet 23 for forming the bottom plate 3 is further superimposed on the bottom surface, and both sides and the bottom are heat-sealed and high-frequency Attach using an appropriate method such as a sticker. At this time, the soft plastic sheets 20, 23 and the soft plastic sheet 2
The bottom seam line 4 formed between the two and position.

In addition, in the above-mentioned joining process, three soft plastic sheets 20, 22, 23 are used as shown in the figure.
After opening the bottom at an angle of approximately 120 degrees and forming the diagonal bottom seam line 4 on a flat surface, the soft plastic sheet 23 that became the bottom plate was bent in two from the center line to join both sides. It is appropriate to do so. In this way, after the bag-like body 24 with only the mouth open as shown in FIG. A hanging part 11 is transparently provided at a corner part diagonally to the spout 5. Note that cutting into individual pieces is performed either before or after the mouth sealing process. In the manufacturing process described above, the spout 5 and the soft plastic sheet 20 are joined together, and the soft plastic sheets 20, 22, 23 are joined on a flat surface. There is no consideration whatsoever.

(Function) The infusion bag configured in this way has no connection defects, so there is no risk of contamination of the contents, and the hanging part 11 provided transparently at the diagonal corner of the spout 5 is used. At the same time, the cutout 8 of the spout 5 protruding from the corner where the seam line 4 at the bottom of one side plate 1 is on the downward side is removed, and the rubber stopper 9 is attached to the hanging fitting. When used by piercing the infusion needle into the infusion needle, the side plates 1 and 2 made of soft plastic sheets are pressed by atmospheric pressure, allowing the contents to flow out smoothly without introducing outside air into the interior using the air needle. be. In addition, since the seam line 4 at the bottom is disposed asymmetrically and obliquely toward the spout 5 side, it is possible to minimize the amount of remaining liquid in the container. Afterwards, the two side plates 1 and 2 are brought into close contact with each other and become almost planar, so they can be disposed of or stored in a small space.

(Effects of the Invention) As is clear from the above description, in the present invention, all parts are joined on a flat surface, so there is no possibility of joint failure, and the bottom seam line is asymmetrically inclined. A spout is provided protruding from the corner on the downward side of the bag, so the remaining amount during infusion can be kept to a minimum, and unlike the conventional 2-sheet bag, this bag has 3 sheets. Therefore, the internal capacity can be greatly increased, it can be used for a long time, and there is also the effect of reducing the work of replacing the infusion bag. Further, according to the method of the present invention, the above-mentioned infusion bags can be manufactured continuously without bonding defects, and the manufacturing cost can be reduced. As described above, the present invention has extremely great practical value as it solves the problems of conventional infusion bags of this type.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway perspective view showing an embodiment of the first invention of the present application, FIG. 2 is a partially cutaway side view, and FIG.
The figure is a front view, FIG. 4 is a process explanatory diagram showing an embodiment of the second invention of the present application, and FIG. 5 is a process explanatory diagram showing a process after the process shown in FIG. 4. 1, 2: Side plate, 3: Bottom plate, 4: Seam line,
5: spout, 11: hanging part.

Claims (1)

[Claims] 1. Side plates 1 and 2 made of soft plastic sheets.
and a bottom plate 3, the side plates 1,
The bottom seam line 4 formed between the bottom plate 2 and the bottom plate 3 is asymmetrically obliquely sealed to form a bag-like seal. A spout 5 is provided protrudingly,
Furthermore, the infusion bag is characterized in that hanging parts 11 are transparently provided at the diagonal corners of the spout 5 of the side plates 1 and 2. 2. After spouting spouts are joined at predetermined intervals to the end portions of the soft plastic sheet forming the side plate, the soft plastic sheet is connected to another soft plastic sheet forming the other side plate and the soft plastic sheet forming the bottom plate. A bag-like body consisting of three sheets with an open mouth is formed by positioning the spout at the corner on the downward side of the seam line at the bottom of the diagonal part and continuously pasting them together on a flat surface to form a bag-like body consisting of three sheets with an open mouth. A method for manufacturing an infusion bag, characterized by sealing the opening after filling and providing a hanging part at a corner diagonally opposite the spout.