JPH05185529A - Frp vessel - Google Patents

Abstract

PURPOSE:To improve the strength of a mouth piece of a lining liner and to contrive its weight-reduction without using metal reinforcement. CONSTITUTION:Fiber-reinforced resin layer 5 is provided on the outer periphery of lining liner 1. A mouth piece 6 is integrally formed on the opening part 2 of the lining liner 1. Screws are provided on both surfaces of inner and outer peripheries of the mouth piece 6. The elongated layer 5' of the fiber-reinforced resin containing the fiber in peripheral direction is provided on the outer periphery of the mouth part 6. The elongated layer 5' of the fiber-reinforced resin is continued onto the fiber-reinforced resin layer 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an FRP container used as a fluid storage tank or the like.

[0002]

2. Description of the Related Art FRP (fiber reinforced composite material) is lightweight, has a large specific strength (strength / density), has excellent fracture toughness, and can withstand a large temperature difference. Widely used as various structural materials and anticorrosion coating materials.

When a container such as a fluid storage tank is formed by winding the FRP, if the FRP materials are separated from each other to form a gap, the internal fluid leaks from the gap and the function as the container cannot be exerted. Conventionally, an inner liner made of metal or plastic is used, and the FRP material is wound around the outer periphery of the inner liner in multiple layers by the FW (Filament Winding) method.

An example of the FRP container manufactured by the above-mentioned molding method is shown in FIG. That is, the lining liner 1 that is a part of the container body is formed by blow molding a resin, and a lid is attached to the opening 2 provided at one end of the lining liner 1 or a pipe is connected. To form a base portion 6 adapted to receive the base portion 3 with a screw portion for fitting the base portion 3 into the base portion 6, and to reinforce the base portion 6 to the base portion 7. A metal cap 4 is fitted on the outer circumference of this portion, and the outer circumference of the lining liner 1 is
The fiber-reinforced resin layer 5 is provided so as to cover the outer peripheral portion of the cap 4 (actually 1-138724).
issue).

[0005]

However, in the case of the above-mentioned conventional FRP container, the shape of the range from the mouthpiece portion 6 which is weak in strength and easily deformed by the internal pressure to the root portion 7 is complicated, and the fiber reinforcement is difficult. Since it is difficult, the cap 4 made of metal is provided on the outer circumference of the mouthpiece 6 to reinforce the strength. However, depending on the strength of the metal, the weight becomes large and the FR
There is a problem that the advantages of the P container cannot be fully utilized.

[0006] Therefore, the present invention is intended to improve the strength of the periphery of the mouthpiece without depending on the metal reinforcement, and to reduce the weight.

[0007]

In order to solve the above-mentioned problems, the present invention provides a FRP container in which a fiber reinforced resin layer is covered on the outer periphery of a resin-lined liner which is a part of the container body. The mouth of the lining liner is integrally formed with a mouthpiece having threads formed on both inner and outer circumferences, and the outer periphery of the mouthpiece is
A fiber-reinforced resin extension layer containing circumferential fibers is provided so as to be continuous with the fiber-reinforced resin layer.

[0008]

Since the mouthpiece portion is reinforced by the fiber reinforced resin extension layer containing the circumferential fibers by utilizing the outer peripheral screw of the mouthpiece portion, the strength of the mouthpiece portion can be enhanced without relying on the metal reinforcement.

[0009]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 and 2 show an embodiment of the present invention. Similar to the FRP container shown in FIG. 3, the lining liner 1 having an opening 2 at one end as a container body has an outer periphery, In a structure in which the fiber reinforced resin layer 5 is covered, a mouthpiece portion 6 having threads formed on both inner and outer peripheral surfaces is integrally formed by blow molding in the opening 2 of the lining liner 1.
In addition, a fiber-reinforced resin extension layer 5 ′ that is continuous with the fiber-reinforced resin layer 5 is provided on the outer peripheral portion of the base 6.

More specifically, the lining liner 1 is formed by blow molding using a resin such as polyethylene. At this time, a screw 6a is engraved on the inner peripheral surface and a screw 6b is engraved on the outer peripheral surface. The base portion 6 is integrally molded,
A lid or the like can be attached to the inner peripheral screw 6a of the base portion 6. Further, the base portion 6 is provided with a fiber reinforced resin extension layer 5 '.
As shown in the enlarged view of FIG. 2, the FRP material (prepreg) 8 obtained by impregnating the reinforcing fibers with the matrix resin is entirely covered with the FRP material (prepreg) 8. After arranging one or two layers, the surface of the FRP material 8 is tightly wound by the circumferential fibers 9, and further, the outer circumference of the FRP material 8 fastened by the circumferential fibers 9 is
The FRP material 8 laminating process and the circumferential direction fiber 9 winding process similar to the above are repeated as many times as necessary, and the outer peripheral screw 6 of the base 6 is
After filling the valley portion of a, the FRP material 8 is laminated in layers to form a fiber-reinforced resin extension layer 5'having a required thickness. Further, the FRP material 8 is helically wound on the outer periphery of the base portion 7 of the base portion 6 to form the fiber reinforced resin layer 5 in a thicker shape. The fiber-reinforced resin layer 5 and the fiber-reinforced resin extension layer 5 '
Needless to say, the state is the state after the outer shape molding die is arranged on the outer side and is heated and pressed to be cured.

In the above structure, the mouthpiece 6 having the screws 6a and 6b provided on the inner and outer peripheral surfaces is integrally molded in the opening 2 of the liner 1 so that the lid can be attached by using the inner peripheral screw 6a. it can. Therefore, the metal base 3 as shown in FIG. 3 becomes unnecessary. Further, at this time, since the base 6 is made of resin, there is concern about the strength.
In the present invention, since the base portion 6 is reinforced by utilizing the outer peripheral screw 6b, the required strength can be secured.
That is, it has been difficult in the past to perform fiber reinforcement on a portion having a complicated shape such as the mouthpiece portion 6, but in the case of the present invention, the FRP material 8 is laminated on the outer peripheral screw 6b and the circumferential fiber 9 is formed. Since the fiber-reinforced resin extension layer 5 ′ is provided on the outer periphery of the mouthpiece portion 6 by performing the winding tightening, the mouthpiece portion 6 can be easily reinforced. Therefore,
The cap 4 as shown in FIG. 3 can be omitted.

The present invention is not limited to the above-mentioned embodiments, and it goes without saying that various modifications can be made without departing from the gist of the present invention.

[0014]

As described above, according to the present invention, in the FRP container in which the fiber reinforced resin layer is covered on the outer periphery of the resin liner liner which is the container body, the inner liner and the outer liner are provided in the opening of the liner liner. Since the base part with screws on both sides is integrally molded, the lid etc. can be directly attached by using the inner peripheral screw of the base part, and the circumferential fiber is included by using the outer peripheral screw of the base part. Since the mouthpiece part is reinforced by the fiber-reinforced resin extension layer, the strength in the vicinity of the mouthpiece part can be secured without asking the metal for the strength. Therefore, a lightweight FR
It exhibits an excellent effect that it can be a P container.

[Brief description of drawings]

FIG. 1 is a schematic diagram of a main part showing an embodiment of an FRP container of the present invention.

FIG. 2 is an enlarged view of a part II in FIG.

FIG. 3 is a schematic diagram showing an example of a conventional FRP container.

[Explanation of symbols]

 1 Inner Liner 2 Opening 5 Fiber Reinforced Resin Layer 5'Fiber Reinforced Resin Extension Layer 6 Clasp 6a, 6b Screw 9 Circumferential Fiber

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location B29C 67/14 U 7188-4F B65D 1/09 // B29K 23:00 105: 08 105: 22 B29L 9:00 4F 22:00 4F

Claims (1)

[Claims] 1. An FRP container comprising a resin-lined liner that is a part of a container body and a fiber-reinforced resin layer covering the outer periphery of the resin-lined liner. A cap having threads formed on both inner and outer peripheries of the opening of the liner. Part is integrally molded, and on the outer circumference of the base part,
FR in which a fiber-reinforced resin extension layer containing circumferential fibers is provided so as to be continuous with the fiber-reinforced resin layer
P container.