JPH0460100A - Package body for ground reinforcing stiffener and manufacture thereof - Google Patents

Abstract

PURPOSE:To improve the efficiency of production and unify the mixing of two liquids by injecting raw material liquids A, B in an outer bag and an inner bag laminated with an aluminum foil and a synthetic resin film, and fastening them at the preset length to manufacture a package body of a ground reinforcing stiffener. CONSTITUTION:A lengthy sheet 21 for an outer bag 2 and a lengthy sheet 31 for an inner bag 3 laminated with an aluminum foil and a synthetic resin film are continuously fed, side edge sections 22 and side edge sections 32 are pressed and heat-melted respectively by pressing rolls 11, 12 to form bag bodies 23, 33, the first and second raw material liquids A, B for generating hard foam polyurethane are injected into the bag bodies 23, 33, and they are fastened with fastening tools 5 at the preset length to continuously manufacture a package body 1. When the package body 1 is to be used for the ground reinforcing construction method, terminal sections of the outer bag 2 and the inner bag 3 are concurrently broken with the tip of a rotating core material 54, and the raw material liquids A, B are uniformly mixed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a curing agent package for reinforcing the ground around a tunnel or the like, and a method for manufacturing the same.

[Conventional technology]

In the construction of mine shafts, railway/road tunnels, etc. (hereinafter simply referred to as mine shafts), the construction method shown in Figure 3 is used to reinforce the ground around the shafts. In this construction method, holes 52 with an inner diameter of about 42 mm and a length of about 1800 mm are drilled radially in the ground 51 around the tunnel 50 at appropriate intervals, and in the depths of the holes 52 are formed raw materials for producing hard polyurethane foam as a hardening agent. Insert the liquid package 53. Then, a core material 54 made of wood or iron is inserted into the hole 52 and rotated to tear the bag of the packaging body 53, and the two raw materials are mixed to produce foamed polyurethane.
2 is filled with a core material 54 and polyurethane foam 55, thereby reinforcing the ground.

Conventionally, the curing agent package used in this construction method is shown in FIG. 4(a) or 4(a).

A package 61 shown in FIG. 2A is a package in which a storage bag 62 for liquid A (polyol) and a storage bag 63 for liquid B (incyanate) are placed side by side and packaged in a packaging bag 64.

In addition, the package 65 shown in FIG.
6 contains a storage bag 67 for liquid B.

[Problem that the invention attempts to solve]

However, the above-mentioned conventional packaging has the following problems in terms of manufacturing and usage of the packaging.

The package 61 shown in FIG. 4(a) has two storage bags 62 and 63 packed in parallel, so the package 61 has an oval cross section and is inserted into a hole 52 with a circular cross section around the tunnel. In order to do this, each storage bag must be made small in diameter and made long, which results in a large number of voids when inserted deep into the tunnel hole 52. Furthermore, due to the core material 54, when the storage bag is torn, the two bags may not be torn at the same time, and the two liquids may not mix uniformly.

The package 65 shown in FIG.
The packaging work of enclosing the liquid in the storage bag 67 is troublesome, and the manufacturing efficiency of the package is low. In addition, both storage bags 66,
67 are difficult to tear at the same time, there is a drawback that the two liquids are not mixed uniformly, and there is also a drawback that the outer bag, which is torn first, tends to get entangled with the core material 54.

An object of the present invention is to provide a package in which both storage bags enclosing two raw material liquids are torn at the same time so that the two liquids are mixed uniformly, and to efficiently manufacture this package.

[Means to solve the problem]

The packaging body of the curing agent for ground reinforcement of the present invention consists of an exterior package containing a first raw material solution for producing rigid polyurethane foam and an interior package containing a second raw material solution, and each end of the exterior package and the interior package are tightened at the same location.

In addition, the method for producing the above-mentioned package includes continuously feeding a first elongated sheet in which aluminum foil and synthetic resin film are laminated, and heat-sealing the side edges to each other to form an exterior. A 20th elongated sheet laminated with a synthetic resin film and a synthetic resin film is continuously fed toward the inside of the exterior, and the side edges are heat-sealed to form an interior. This method involves simultaneously injecting one raw material liquid into the exterior and a second raw material liquid into the interior, while tightening the same parts of the exterior and interior at predetermined lengths.

[Effect]

In the package of the present invention, the exterior and interior are tightened at the same location at both ends, and when the package is torn by the core material in the hole drilled around the tunnel, the exterior and interior are torn at the same time.

Moreover, in the manufacturing method of the present invention, the formation of the exterior and interior and the supply of the raw material liquid to the same grade are performed continuously, and the package is continuously manufactured.

〔Example〕

FIG. 1 is a perspective view showing a package according to an embodiment of the present invention.

The package 1 consists of an exterior 2 and an interior 3. The exterior 2 has a polyol sealed therein as a raw material liquid A, and the interior 3 has incyanate sealed therein as a raw material liquid B. Each end portion 4 of the exterior 2 and interior 3 is tightened at the same location by a tightening tool 5.

The size of the package 1 is approximately 32 mm in outer diameter and approximately 4 mm in length.
00mm. Approximately 200 cc of raw material liquids A and B are sealed in the exterior 2 and interior 3, respectively.

The exterior packaging 2 and interior packaging 3 have a thickness of approximately 30 mm to prevent the raw material liquid from seeping out of the bag and from absorbing moisture in the outside air.
μm polyethylene film 6, approximately 9 μm thick aluminum foil 7, and approximately 15 μm thick polyester film 8
It is manufactured from laminated sheets.

When this package 1 is used in the ground reinforcement method shown in Figure 13, the ends of the exterior 2 and interior 3 are simultaneously torn at the tip of the rotating core material 54, and the raw materials A and B are mixed uniformly. .

FIG. 2 is a diagram for explaining a method of manufacturing the package 1 shown in FIG. 1.

The package 1 continuously supplies a long sheet 21 for the exterior 2 and a long sheet 31 for the interior 3, and the side edges 22
The bags 23 and the bags 33 are formed by heat-sealing the two sides and the side edges 32 while pressing each other with the pressure rolls 11 and 12, and at the same time, the bags 23 and the bags 33 are coated with a material for producing hard polyurethane foam. While injecting the first raw material liquid A and the second raw material liquid B, each predetermined length is tightened by the tightening tool 5, thereby being continuously manufactured.

As explained in FIG. 1, the long sheets 21 and 31 are
It is made by laminating polyethylene film 6, aluminum foil 7, and polyester film 8, and is a long sheet with a width corresponding to the outer circumferential length of each bag body 23 and 33. Although the mechanism for continuously supplying the long bags (21 and 31) and the mechanism for forming them into a cylinder are not shown, these mechanisms are similar to conventionally known manufacturing methods for manufacturing a single long bag. It can be constructed by applying a lid.

〔Effect of the invention〕

In the package of the hardening agent for soil reinforcement of the present invention, both ends of the outer package and the inner package containing the respective raw material liquids are tightened at the same point, so that the package is secured by the core material in the hole drilled around the tunnel. When it is torn, the exterior and interior are torn at the same time, and the two raw material liquids are evenly mixed. Furthermore, the exterior and interior parts will not become entangled with the core material after being torn.

Further, according to the method for manufacturing a package of the present invention, the formation of the exterior and interior and the supply of the raw material liquid to the interior are performed continuously,
Since the packages are manufactured continuously, the packages can be manufactured extremely efficiently.

[Brief explanation of drawings]

FIG. 1 is a partially cross-sectional front view of a package according to an embodiment of the present invention, and FIG. 2 is a diagram for explaining a method of manufacturing the package. FIG. 3 is a diagram for explaining a construction method for reinforcing the ground around a mine shaft, and FIG. 4 is a diagram showing an example of a conventional packaging body. 1: Packaging body 2: Exterior 3: Interior 4: Terminating part 5: Tightening tool 5: Polyethylene film 7: Aluminum I 8: Polyester film 11.12: Pressure roll 21.31: Long sheet 22. 32: Side edge Parts 23, 33: Bag body 50: Mine shaft 5
1. Ground 52: Hole 54: Core material 61.65 + packaging 64: Packaging bag 53: packaging 55; polyurethane foam 62, 63, 66, 67: storage bag

Claims (1)

[Scope of Claims] 1. Consisting of an exterior sealed with a first raw material solution for producing rigid polyurethane foam and an interior sealed with a second raw material solution, each end of the exterior and interior is tightened at the same location. Packaging of curing agent for ground reinforcement. 2. The first laminated aluminum foil and synthetic resin film
While continuously feeding the long sheet, the side edges are heat-sealed to form an exterior, and a second long sheet laminated with aluminum foil and synthetic resin film is directed toward the inside of the exterior. While continuously feeding, the side edges are thermally fused together to form the interior, and while simultaneously injecting the first raw material liquid for producing rigid polyurethane foam into the exterior and the second raw material liquid into the interior, A method for manufacturing a package of a hardening agent for ground reinforcement, which is characterized by tightening the exterior and interior at the same location for each predetermined length.