JPS6054711A - Preparation of membrane separation device utilizing hollow yarn - Google Patents

Abstract

PURPOSE:To prepare a hollow yarn type membrane separation device in a short time and easily without causing damage on the fiber bundle by winding previously a sheet to a bundle of hollow yarn bundled at both ends and loading the sheet in a case, and then drawing out the sheet alone from the case. CONSTITUTION:A sheet 8 is wound on a bundle of hollow yarn bundled by binding both ends of many number of single yarn with a tape 4 to provide a bundle of yarn 9 wound on a sheet wherein an end of the yarn bundle protrudes 13 from another end of the sheet 8 and another end of the sheet 8 protrudes 11 from another end 3 of the yarn bundle 1. Then, the yarn bundle 9 wound on the sheet is inserted to a case 6 from the protruded part 11 of the sheet through an end of the case 2 of the hollow yarn type membrane separation device. Further, the protruded part of the yarn bundle 13 is held by a holding mechanism 14 and the protruded part 11 of the sheet is held by a holding mechanism 15, and the sheet is pulled in the direction of arrow mark D to draw out the sheet 8 alone; thus, the hollow yarn bundle 1 is loaded in the case 2.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a hollow fiber membrane separation device, and more specifically, a method for manufacturing a hollow fiber fiber bundle for liquid dialysis in a hollow fiber membrane separation device such as a hollow fiber hemodialysis device. This relates to the method of loading the case. The conventional method will be described using FIGS. 1 to 3. 1 to 3 are longitudinal sectional views of the hollow fiber type hemodialysis device manufacturing process.

When loading the yarn bundle 1 into the case 2, tie one end 3 of the yarn bundle 1 with a string or tape 4, and tie the string or tape 4.
Leave the tied end 5 at least t for the length of the case 2, and pass this end 5 through the cylindrical case 6f in advance as indicated by the arrow A.
By pulling the yarn bundle 1 in the direction of the case 2,
The inside of the tank was loaded.

However, in this method, the end 5 of the string or tape 4
When pulling, as shown in Figure 2, the string or tape 4 that bound the thread bundle 1 is not perpendicular to the inner circumferential surface 7f of the case 2, and the knot 6 at the end 3 gets stuck. There is a problem that not only the ends 6 of the yarn bundle 1 may become uneven, but also the part 1' of the yarn bundle 1 may rub against the edge of the case and become disordered or cause single thread breakage. Ta.

As mentioned above, if the yarn bundle 1 is disturbed or a single fiber is broken, the inside of the hollow fibers can be cleaned smoothly in the subsequent process. Not only is this not possible, but in the case of a hollow fiber type hemodialysis device, blood clogs and leaks occur, so that it cannot be used as a product at all.

Therefore, the work of inserting the yarn bundle 1 into the case 2 requires a high degree of skill on the part of the craftsman, and even so, the defective rate is high and productivity is significantly hindered.

Therefore, the inventor of the present invention solved the drawbacks of the conventional method described above, and provided a method to efficiently load a bundle of yarns into a case in a short time without damaging or cutting each single yarn forming a light beam. As a result of our study, we found that the above purpose can be effectively achieved by wrapping a sheet around a yarn bundle in advance, loading it into the case, and then pulling out only the sheet from the case.
・We have discovered that this can be achieved and have arrived at the present invention.

That is, when loading hollow fibers into the case of a hollow fiber type membrane separator, the present invention provides a hollow fiber bundle with both ends bundled together with a sheet wider than the outer circumference of the fiber bundle, and a sheet that is wider than the outer circumference of the fiber bundle. The yarn bundle is wound in a convergent direction such that one end in the longitudinal direction protrudes from one end of the sheet and the other longitudinal end of the sheet protrudes from the other end of the yarn bundle. Then, the sheet-wrapped yarn bundle is sorted and wound to form a bundle of yarn consisting of a sheet protruding part, a sheet winding part, and a yarn bundle protruding part in the length direction, and the sheet protruding part side of the sheet-wrapped yarn bundle is sequentially inserted into the case from one end of the case. After loading the sheet-wrapped yarn bundle into the case, grip the yarn bundle protrusion on the yarn bundle insertion side of the case, and pull the sheet protrusion protruding from the other end of the case. The present invention provides a method for manufacturing a hollow fiber membrane separation device, which is characterized in that only sheets are pulled out.

The present invention will be described in detail below with reference to the drawings.

Figures 4 to 9 show an example of the process of manufacturing a hollow fiber hemodialysis device using the method of the present invention, and Figure 4 is a plan view of a hollow fiber bundle placed on a sheet. , FIG. 5 is a plan view of a state in which a sheet is wound around a hollow fiber bundle, and FIG. 6 is a sectional view taken along line Vl-Vl' of a portion of FIG. 7 and 8 are longitudinal cross-sectional views showing how the sheet-wrapped hollow fiber bundle shown in FIGS. 5 and 6 is inserted into the case, and FIG. FIG. 7 is a longitudinal cross-sectional view showing a state in which only the sheets are pulled out after inserting the bundle into the case.

As shown in FIG. 1, a yarn bundle 1 whose ends 3 and 3' are bound with tape 4° 4' is placed on a sheet 8.

In this case, one end 10 in the length direction of the sheet 8 is
The yarn bundle 1 is placed so that one end 5j of the yarn bundle 1 also protrudes, and the other end 3' of the yarn bundle 1 projects more than the other end 10' of the sheet 8. Therefore, the width of the sheet (BB' in FIG. 4) needs to be larger than the outer circumference of the yarn bundle 1.

Next, the sheet 8 is moved in the direction of convergence of the yarn bundle 1 (B-).

B′ direction] e is wound as shown in FIGS. 5 and 6,
A substantially cylindrical sheet-wrapped hollow fiber fiber bundle (hereinafter referred to as a sheet-wound fiber bundle) 9 is formed, the length direction of which consists of a sheet protrusion 11, a sheet winding portion 12, and a yarn bundle protrusion 13.

At this time, the sheet overlapping part of the sheet winding thread bundle is required t
The sheet may be glued accordingly, or the sheet may be gripped by the yarn bundle gripping mechanism 14, which will be described below, while being wound. By winding the sheet-wrapped yarn bundle 9 and the yarn bundle 1e made of large hollow fibers, the diameter of the yarn bundle 1 was reduced and the yarn bundle itself was fixed in the length direction. This allows it to be inserted into the case 2 very easily.

Insertion of the sheet-wound thread bundle 9 into the case 2 is performed as follows. For example, as shown in FIG. 7, the case 2 is supported horizontally, the end 3 of the sheet-wrapped thread bundle 9 held by the thread bundle gripping mechanism 14 is inserted into one end of the case 2, and the thread bundle gripping mechanism 14 is Move in the direction of arrow C. When the sheet winding yarn bundle 9 is inserted into the case 2 for more than about half of its longitudinal length, the sheet winding yarn bundle 9 is moved by once moving the yarn bundle gripping mechanism 14 in the direction of arrow C. Push it into the case 2 to complete loading and bring it into the state shown in Figure 8.

In this state #Af, only the thread bundle protrusion 13 of the sheet-wrapped thread bundle 9 is gripped by the thread bundle gripping mechanism 14, so the sheet protrusion at the other end as shown in FIG. 11 is gripped by the sheet gripping mechanism 15, and by pulling and moving it in the direction of the arrow t, only the sheet 8 is pulled out from the case 2.

like this? Due to this rubbing, the yarn bundle 1 is efficiently loaded into the case 2 without scratching the edges or inner wall of the case 2, causing damage or unevenness, and efficiently producing high-quality products. It can be manufactured as follows.

Note that the gripping portion of the yarn bundle protrusion 13 by the yarn bundle gripping mechanism 14 when pulling out the 1fiJ sheet 8 is a portion that will be cut and removed in the subsequent process, and the portion used for the final product of yarn bundle 1° is the case. It is desirable that all the interior filling parts be the sheet wrapping part 12. This is due to the friction between the case 2 and the hollow fibers forming the yarn bundle 1 that occurs when the yarn bundle 1 is inserted into the case 2f, and the hollow fibers that tend to occur when the yarn bundle 1 is gripped by the yarn bundle gripping mechanism 14). This is to eliminate defective parts of the hollow fibers due to deformation, etc., and obtain an extremely high-quality hollow fiber membrane separation device.The device obtained in this way is particularly prone to blood clogs and leaks in the case of hollow fiber hemodialysis devices. It has excellent performance without causing any problems.

The gripping force of the yarn bundle 1 by the yarn bundle gripping mechanism 14f is such that the sheet-wrapped yarn bundle 9 is held within the case 6f? - When inserting, it is sufficient that the sheet-wrapped thread bundle 9 moves sufficiently within the case 6; if it is gripped too tightly, it may cause problems such as deforming the hollow fibers □ forming the thread bundle 1. Undesirable. Further, the gripping force of the yarn bundle protrusion 13 by the yarn bundle gripping mechanism 14 when only the sheet 8 is pulled out from the case 6 is sufficient to the extent that the hollow fibers forming the yarn bundle 1 are not disturbed.
Particularly when a part to be used in a product must be gripped, it is desirable to grip the hollow fiber with a weak force that does not deform the hollow fiber.

It is preferable that the yarn bundle gripping mechanism 148 and the sheet gripping mechanism 15 be automatic devices such as robots, but they may be manually operated by an operator.

The sheet used in the method of the present invention is made of parchment paper, polypropylene film, polyester film, etc., and the surface of the sheet is particularly matted or coated with an antistatic agent, and the yarn bundle and inner periphery of the case are It is recommended that the frictional resistance with the surface is reduced because the hollow fibers will not be disturbed or damaged, and the work propulsion speed can be significantly improved.

As explained above, according to the present invention, when loading a bundle of hollow fibers into a case, there is no disturbance of the hollow fibers or breakage of single fibers caused by friction between the hollow fibers and the case. A hollow fiber type membrane separation device is obtained, and (e) in the case of a hollow fiber type hemodialysis device, no leakage occurs even if blood clogs.

In addition, the task of loading the hollow fiber bundle into the case becomes extremely simple, and anyone can do it in a short time without requiring highly skilled personnel, which also significantly reduces production costs. be able to.

[Brief explanation of drawings]

1 to 3 are longitudinal sectional views showing the manufacturing process of a conventional hollow fiber hemodialysis device. Figures 4 to 9 show the process of manufacturing a hollow fiber hemodialysis device using the method of the present invention, Figures 4z and 5 are plan views, and Figure 6 is a Vl-Vl' in Figure 5. Cross section, 7th
Figures 8 and 8 are longitudinal sectional views showing the state in which the sheet-wrapped hollow fiber bundle is inserted into the case, and Figure 9 shows the state in which only the sheet is pulled out after inserting the sheet-wrapped hollow fiber bundle into the case. FIG. 1.1' ... Hollow fiber bundle 2 ... Case 3.3' ... End 4 Mountain Tape 6 ... Inside the case 7 ... Inner peripheral surface 8 ・1 Sheet 9 ... Sheet Wrapped hollow fiber bundle 10.10'... End portion 11... Sheet protrusion 12... Note winding part 13... Yarn bundle protrusion 14... Yarn bundle gripping mechanism 15...・Sheet gripping mechanism patent applicant Toshi Co., Ltd. Figure 1

Claims (1)

[Claims] When loading hollow fibers into the case of a hollow fiber membrane separator, a sheet wider than the outer circumference of the fiber bundle is inserted into the bundle of hollow fibers, which are bundled at both ends, in the length direction of the fiber bundle. Wound in the direction of convergence of the yarn bundle such that one end of the sheet protrudes from one end of the sheet and the other longitudinal end of the sheet protrudes from the other end of the yarn bundle, A sheet-wrapped thread bundle is formed in the length direction from a sheet protruding part, a sheet winding part, and a thread bundle protruding part, and the sheet-wrapped thread bundle is successively inserted into the case from one end of the case on the sheet protruding part side,
m After loading the sheet-wrapped yarn bundle into the case, grasp the yarn bundle protrusion on the yarn bundle insertion side of the case, and pull the sheet protrusion protruding from the other end of the case. 1. A method for manufacturing a hollow fiber membrane separation device characterized by pulling out.