JPS60225559A - Transfusion bag and its production - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) 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 into a bag shape, are gradually becoming popular as an alternative to 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 bags, eliminate the possibility of poor bonding around the spout, and eliminate the possibility of bonding defects in the vicinity of 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 invention of Section 1 of the present application seals side plates made of soft plastic sheets in a bag shape by making the seam line at the bottom of the side plate diagonally asymmetrical, and the seam line at the bottom of one side plate A pouring spout is provided protrudingly in a part of the corner on the downward side, and a hanging part is provided transparently in a part of the diagonal corner of the spout on both side plates, and The invention of Section 2 of the present application relating to the manufacturing method is to join spout ports at predetermined intervals to the end portions of a soft plastic sheet, and then connect the soft plastic sheet to another soft plastic sheet along the seam line of the bottom part diagonally passing the spout ports. A bag-like body with an open mouth is formed by continuously attaching the bag to a part of the corner on the downward side, and after filling the content liquid, seal the mouth and part of the corner diagonally to the spout. It is characterized by having a transparent hanging part.

(Example) Next, the present invention will be explained in detail with reference to illustrated examples.As shown in Figs. It is made by sealing two side plates (1) and (2) made of soft plastic sheets with excellent sealing properties into a bag shape.It is also possible to make a two-sheet bag using only the two side plates, but as shown in the figure. This is a three-sheet bag that uses two side plates (11, (2) and a bottom plate (3) made of the same material. The bottom plate (3) is made of a rectangular flat sheet. with side plates (1) on both sides, (
2) It can be folded flat when attached to the lower part, but when filled with liquid, its weight causes the lower part to bulge outward as shown in Figures 1 and 2, allowing it to stand on its own. It is the form. In the illustrated three-sheet bag, the bottom seam line (4) is formed between the side plates (11, (2) and the bottom plate (3), and as illustrated, it runs diagonally asymmetrically from one side to the other. It is formed by letting.

A spout (5) made of a rubber material or an elastic plastic material is protruded from a part of the corner where the bottom seam line (4) of one side plate (11) is on the downward side.

The spout (5) has a flat joint (6) at its base, and this 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 at the tip of the cylindrical main body. Further, a bead-shaped annular projection αω 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 projection αω. A hanging part (11) that passes through both side plates (11, (2)) is transparently provided in a part of the diagonal corner of this spout (5). This is a part for hanging from a stand-type hanging fixture, and its shape can be arbitrary.

Next, the method for manufacturing an infusion bag of the present invention will be explained with reference to FIG. 4, which shows the manufacturing process of a two-sheet bag. In addition to providing transparent holes (21) at intervals, the spout (5) equipped with the above-mentioned joint portion (6) is aligned with the through hole (21) and bonded by heat sealing, high frequency sealing, adhesive, etc. Join by any method. Alternatively, the through hole (21
) The spouts (5) are directly joined at predetermined intervals without forming any holes. If the through hole (21) is not formed, even if the joint (6) and the soft plastic seam (20) are incompletely joined, there is an advantage that contamination of the contents from the outside can be prevented. be. Next, a soft plastic sheet (22) of the same width is superimposed on the back side of this soft plastic sheet (20), and both sides and the bottom are pasted together by an appropriate method such as heat sealing or high frequency sealing. At this time, the bottom seam line (4) is moved asymmetrically obliquely with respect to the center line of the infusion bag, and the spout (5) is placed in a part of the corner on the downward side of the oblique lower seam line (4). position. The manufacturing method for the three-sheet bag shown in Fig. 5 is almost the same as the manufacturing method for the two-sheet bag described above, but the spout (
A soft plastic sheet (22) of the same width is superimposed on the back side of the soft plastic sheet (20) to which 5) is joined, and a soft plastic sheet 1- (23) is further added to form the bottom plate (3). They are different in that they are overlapped and bonded to the bottom surface. At this time, as shown in the diagram, 3
Diagonal bottom seam line (4) of two soft plastic sheets (22) opened at an angle of approximately 120 degrees
After forming the bottom plate, it is appropriate to bend the soft plastic sheet (23) that serves as the bottom plate in two from the center line and join both sides. In this way, after a bag-like body (24) with only the mouth open as shown in Fig. 6 is continuously formed, a liquid such as a medicinal solution is filled from the mouth, and finally the mouth is sealed. At the same time, a hanging part (11) is transparently provided in a part of the corner diagonally to the spout (5). Note that cutting into individual pieces is performed either before or after the mouth sealing process. In any of the manufacturing processes explained above, the spout (5) and the soft plastic seam (20
) and each soft plastic sheet (20), (
Since the bonding between 22) and (23) is performed on a flat surface, a reliable bond is obtained and there is no corrosion caused by poor bonding.

(Function) The infusion bag configured in this way has no joint defects, so there is no risk of contamination of the contents, and the infusion bag has a transparent hanger provided at a part of the diagonal corner of the spout (5). beneath(
11) is engaged with the hanging fitting and hung diagonally, and the spout (5) protruding from a part of the corner where the bottom seam line (4) of one side plate (1) is on the downward side is cut out. Part (8
) and insert the infusion needle into the rubber stopper (9), the side plates (11,
(2) is pressurized by atmospheric pressure and allows the content liquid to flow out smoothly without introducing outside air into the interior using an air needle. In addition, since the seam line (4) at the bottom is asymmetrically inclined toward the spout (5), it is possible to minimize the amount of remaining liquid. After being used, the two side plates (1) and (2) are in 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 risk of joint failure, and the bottom seam line can be made asymmetrical. Since a spout is provided protruding from a part of the downward corner of the diagonal, the amount remaining during infusion can be kept to a minimum. Further, according to the method of the present invention, the above-mentioned infusion nozzles 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 notonogs of this type.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway perspective view showing an embodiment of the invention of the present cylinder 1, Fig. 2 is a partially cutaway side view, Fig. 3 is a front view, and Fig. 4 is the invention of the present cylinder 2. 5 is a process explanatory diagram showing another embodiment, and FIG. 6 is a process explanatory diagram showing another embodiment.
It is a process explanatory diagram which shows the post-process of a figure. (1), C2>: side plate, (4); seam line, (5
): Pour spout, (11): Hanging part. // Figure 2 Figure 3 /l Figure 4

Claims (1)

[Claims], ■, Side plate (11, (
2) is sealed in a bag shape with the bottom seam line (4) diagonally running asymmetrically, and a part of the corner where the bottom seam line (4) of one side plate (1) is on the downward side is sealed. A spout (5) is provided protrudingly, and both side plates (1) and (2)
There is a hanging part (1) in a part of the diagonal corner of the spout (5).
1) An infusion bag characterized by being transparent. 2. After joining the spout at a predetermined interval to the end of the soft plastic sheet, connect the soft plastic sheet to another soft plastic sheet at the corner that is on the down side of the seam line of the discharge part diagonally passing through the spout. A bag-like body with an open mouth is formed by continuously attaching the bags to each other, and after filling the contents with the liquid, seal the mouth, and provide a transparent hanging part in a corner diagonally to the spout. A method for manufacturing an infusion bag, characterized by: