JPH06125968A - Manufacture of infusion bag - Google Patents

Abstract

PURPOSE:To provide an infusion bag which is hard to be broken when it is suspended at a low cost by folding a sheet of thermoplastic resin, installing a mouth member at an end edge on the opposite side of a folded part, welding four sides of the sheet except for a thin width at the folded part, and forming a cylindrical suspension part at the folded part. CONSTITUTION:In manufacturing a infusion bag 1, a sheet of soft polyvinyl chloride, drawn in one surface, is two-folded with the drawn surface of the inner side, and a mouth member 2 to be an injection port 21 and a infusion port 22 is installed in an end edge on the opposite side of a folded part 11. Four sides of the sheet are welded by a high frequency welder or the like except for a thin width at the folded part 11. A frame of welded parts 12 is thus formed, and cylindrical suspension part (support part) 13 is formed at the folded part 11. Aperture ends 14 at both ends of the suspension part 13 are cut diagonally, thereby a support beam or the like can easily be inserted through it for using the infusion bag 1 suspended.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing an infusion bag for containing a medical fluid such as physiological saline and blood.

[0002]

2. Description of the Related Art A thermoplastic resin mouth member is attached to one opening of a thermoplastic resin cylindrical sheet, and both end openings are welded and sealed in a flat plate shape to a welded portion where the mouth member is not attached. As described in Japanese Utility Model Publication No. 3-57240, an infusion solution bag provided with a hanging hole that is reversed when drip is known, and two sheets are used instead of the cylindrical sheet. It is also known to form a bag by stacking the above, as described in Japanese Utility Model Publication No. 4-10834.

[0003]

However, in the above-mentioned infusion bag, when the suspension hole is hung by a hook during use, the entire load is applied to one point on the top of the suspension hole, so that the suspension hole is suspended from the suspension hole. There was a problem that it was easily damaged.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned conventional problems and to provide a method for manufacturing an infusion bag which is not easily damaged even when suspended.

[0005]

According to the method for producing an infusion bag of the present invention, a thermoplastic resin sheet is folded in two, and a mouth member is attached between the end edges on the side opposite to the bent portion to make the bent portion thin. It is characterized in that the four folds of a sheet that is folded in two with the width left are welded to form a tubular hanging portion at the bent portion.

The thermoplastic resin used in the production method of the present invention is not particularly limited, but it is preferable to use a transparent resin so that the color and the like of the contents can be visually recognized, and the plasticizer can be eluted in the infusion solution. An unplasticized soft vinyl chloride resin is preferably used.

The thermoplastic resin sheet used in the production method of the present invention is grained on one side and folded in two with the grained surface inside, but the contact surfaces do not stick to each other.
It is preferable because it can be easily separated, and it is easy to inject an infusion solution and to insert the supporting rod into the cylindrical hanging portion.

The tubular suspension part of the infusion bag manufactured by the manufacturing method of the present invention has a slanted open end so that the size of the open end can be increased to facilitate insertion of the support rod. preferable.

[0009]

According to the present invention, the thermoplastic resin sheet is folded in two, and the mouth member is attached between the end edges on the side opposite to the bent portion, and the folded portion is left in a narrow width and is folded in four. Welded,
Since the cylindrical hanging part is formed in the bent part, by inserting the support rod into the hanging part, the load of the infusion bag can be received not by the point but by the line, and the hanging hole is specially drilled. No process required.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side view showing an embodiment of an infusion solution bag manufactured by the manufacturing method of the present invention. Reference numeral 1 denotes an infusion bag. To manufacture the infusion bag 1, a soft polyvinyl chloride sheet having a thickness of 0.3 mm, which is grained on one side, is folded in two with the grained surface on the inside. Installs the mouth member 2 which contacts the inlet 21 and the outlet 22 between the opposite edges.
Next, four folds of the sheet folded in two with the bent portion 11 left narrow are welded in a flat plate shape for 3 seconds by a high-frequency welder to form a frame-shaped welded portion 12, and the bent portion 11 has a cylindrical shape. The bearing 13 is formed.

Next, the open ends 14 on both sides of the support portion 13 are cut off obliquely so that the support rod can be easily inserted.

[0012]

EFFECTS OF THE INVENTION Since the present invention is constructed as described above, an infusion bag which is not easily damaged even when suspended can be manufactured at low cost, and a special process for forming a suspension hole is required. do not do.

[Brief description of drawings]

FIG. 1 is a side view showing an example of an infusion bag manufactured by the manufacturing method of the present invention.

[Explanation of symbols]

 1 Infusion bag 2 Mouth member 11 Bending part 13 Bearing part

Claims (1)

[Claims] 1. A thermoplastic resin sheet is folded in two, a mouth member is attached between the edges on the side opposite to the bent portion, and the folded portion is folded in two, and the four edges of the sheet are welded together. Then, a method for manufacturing an infusion bag is characterized in that a tubular hanging portion is formed at the bent portion.