JP2003269614A - Liquid gasket, its manufacturing method and its use - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a liquid gasket to be easily mounted with uniform quality. <P>SOLUTION: The liquid gasket material 2 is formed in a sheet-like shape and the both sides are covered with a protection sheet 3. When the liquid gasket 1 formed like this is used, one protection sheet is removed and the face exposing the liquid gasket material 2 is attached to a sealing part 10A. Then, another side of the protection sheet 3B is removed, another sealing part 10B is abutted to the removed face and fastened with bolts 8 and nuts 9. If it is held in this state, the liquid gasket material 2 is dried and solidified in rubber-like and the sealing parts 10 is sealed. Since the thickness of the liquid gasket material 2 is constant, certain sealing quality is obtained irrespective of worker's level of skill. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid gasket that seals a pair of sealing parts connected to each other.

[0002]

BACKGROUND ART Conventionally, as a sealing material for sealing between fixing members such as flanges of pipe joints, a dry gasket composed of paper, a metal plate, a wood powder mixed resin plate, other materials, or a wet type has been used. Liquid gaskets and the like are known. For example, a dry gasket that seals the flange,
It is formed in a flange shape, sandwiched between a pair of flanges, and clamped from the outside of the flanges with clamps or bolts to seal between the flanges. In the case of a liquid gasket, apply the liquid gasket to one flange and tighten the clamp or bolt from the outside of the flange. Then, the liquid gasket is spread over the entire flange surface by being pressed against the flange surface. When the flange is held in a fastened state, the volatile solvent of the liquid gasket evaporates and solidifies into a rubber, sealing the flange.

[0003]

However, when the dry gasket is attached to the flange, the dry gasket is aligned with one flange with one hand, and the other gasket is held with the other hand while being held in that state. Hold the dry gasket by applying the flange. Since the dry gasket is clamped between the flanges and fixed with clamps or bolts from the outside of the flanges, the procedure is complicated and it is difficult for one operator to align the gaskets. Especially when a member such as a pipe having a flange is large, it is difficult to hold the flange when fixing with a clamp or the like.

When the liquid gasket is attached to the flange, the operator applies the liquid gasket housed in a tube or the like to one of the flanges. Requires skill. In addition, application may vary depending on the operator, and the quality of the seal may vary. Further, since the volatile solvent evaporates and dries when the liquid gasket is left as it is, it is necessary to assemble the other flange immediately after coating, and there is a problem that the assembly process has a low degree of freedom.

An object of the present invention is to provide a liquid gasket which is easy to mount and has uniform quality, a method for producing the same, and a method for using the same.

[0006]

Therefore, the liquid gasket according to claim 1 of the present invention is a sheet-shaped liquid gasket material, and a pair of protections provided on both sides of the liquid gasket material. And a seat. In the present invention of this configuration, since the liquid gasket material is formed in a sheet shape in advance, when using this, it is sufficient to remove the protective sheet of the liquid gasket and affix it to a sealing portion such as a flange, which is easy to install Since the thickness is formed in advance over the entire surface of the liquid gasket, the quality is uniform regardless of the skill of the operator. In addition, since the liquid gasket material is covered with a protective sheet, the volatile solvent in the liquid gasket material will not evaporate and the liquid gasket material will not dry, and it will be deformed and adhered well to the sealing area to seal. Good quality. As the protective sheet prevents drying, it is also suitable for long-term storage.

The liquid gasket according to a second aspect of the present invention is characterized in that, in the liquid gasket according to the first aspect, the shape of the liquid gasket is a shape of a sealing portion to be sealed with the liquid gasket. In the present invention having this configuration, since the liquid gasket is formed in the shape of the sealing portion, when using this, it is not necessary to arrange the shape simply by attaching it to the sealing portion, and the mounting is easy.
Further, when the liquid gasket is mounted, the surplus amount of the liquid gasket material is small, and the liquid gasket material does not excessively protrude from the sealing portion, and the finish is good.

A method of manufacturing a liquid gasket according to a third aspect of the present invention comprises a step of arranging a liquid gasket material between two protective sheets and a sheet for extending the liquid gasket material into a sheet shape from the outside of the protective sheet. And a shape forming step. In the present invention of this method, since the liquid gasket material is spread into a sheet in the sheet-forming step,
The liquid gasket material is adjusted to the desired thickness. Further, since the liquid gasket material is arranged between the protective sheets and then formed into a sheet shape, the liquid gasket material is prevented from sticking to the manufacturing apparatus during manufacturing or being dried and solidified,
The liquid gasket is well formed.

A method of manufacturing a liquid gasket according to a fourth aspect of the present invention is the method of manufacturing a liquid gasket according to the third aspect, wherein in the sheet-shaped forming step, the liquid gasket material and the protective sheet have a predetermined gap. It is characterized by comprising a rolling step of forming it to a predetermined thickness by passing it through. In the present invention of this method, since the liquid gasket material is formed into a sheet by rolling with a roller, the liquid gasket material is formed to a desired thickness, and
Since the liquid gasket material and the protective sheet are formed between the rollers to form a sheet, continuous production is possible.

The method for producing a liquid gasket according to a fifth aspect of the present invention is the method for producing a liquid gasket according to the third aspect, in which the sheet-like forming step comprises two steps of the liquid gasket material and the protective sheet having a flat surface. It is characterized by comprising a pressing step of forming a predetermined thickness by pressing a predetermined gap with a member. In the present invention of this method,
Since the liquid gasket material is formed into a sheet by pressing with two members having a flat surface, the liquid gasket is formed to a desired thickness by adjusting the predetermined gap.

A method for producing a liquid gasket according to a sixth aspect of the present invention is the method for producing a liquid gasket according to any one of the third to fifth aspects, wherein the liquid gasket is provided before or at the same time as the sheet forming step. It is characterized by comprising a vibrating step for applying vibration to the material. In the present invention of this method, since the liquid gasket material is formed into a sheet shape immediately after the vibration is applied or while the vibration is applied, the liquid gasket material easily extends in the sheet shape. Further, by this, in the sheet-shaped forming step, the tension of the protective sheet due to the resistance force of the liquid gasket material is relaxed, and the damage of the protective sheet is prevented.

The method for producing a liquid gasket according to claim 7 of the present invention is the method for producing a liquid gasket according to any one of claims 3 to 6, wherein the liquid gasket material is provided before the sheet-forming step. It is characterized by comprising a heating step for heating. In the present invention of this method, since the liquid gasket material is softened by heating the liquid gasket material, it becomes easier to form into a sheet shape in the sheet shape forming step.

The method for producing a liquid gasket according to claim 8 of the present invention is the method for producing a liquid gasket according to any one of claims 3 to 7, wherein the liquid gasket is predetermined after the sheet-forming step. It is characterized by including a cutting step of cutting into a shape of. In the present invention of this method, since the liquid gasket is cut into a predetermined shape in advance, the liquid gasket is adjusted to a desired shape according to the storage condition and the use condition. For example, if you cut the liquid gasket into a shape that fits your storage space, you can cut and use just the required size when using it.
Effective use of storage space. Alternatively, if the liquid gasket is cut into the shape of the sealing portion in advance, it is not necessary to cut the liquid gasket on the spot at the time of mounting, and the assembly process is simplified.

A method of using the liquid gasket according to claim 9 of the present invention is a method of using the liquid gasket according to claim 1 or 2 at a pair of sealing portions which are connected to each other. One of the protective sheets is peeled off from the liquid gasket, the surface of the liquid gasket on which one of the protective sheets has been peeled off is attached to one of the sealing parts, and then the other of the pair of protective sheets is peeled off from the liquid gasket, and the other protective sheet It is characterized in that the other side of the seal portion is brought into contact with the surface of the liquid gasket peeled off, and then the seal portion is sealed by fastening with a fastening member from both sides of the pair of seal portions.

According to the present invention of this method, when one surface of the liquid gasket from which the protective sheet has been peeled off is attached to the seal portion, the liquid gasket material adheres to the seal portion due to the adhesive force. Therefore, unlike the case of the dry gasket, it is not necessary to hold the liquid gasket with one hand when aligning the other seal portion, and the alignment is sure and the mounting is easy. Further, this makes it possible to support the member with both hands even when the member having the sealing portion is large, and the position alignment is reliable and easy.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a sectional view showing a sealed state of the pipe 6 of the present embodiment. In this figure, the pipe 6 is configured by joining two pipes 6 (6A, 6B), and flanges 7 (7A, 7B) are provided at these joining portions, respectively. Flange 7 (7
A, 7B) are opposed to each other at a sealing portion 10 (10A, 1A).
0B), and the liquid gasket 1 according to the present invention is interposed between them. Plural (four in the present embodiment) bolt holes 11 through which the fastening member penetrates are formed in the flange 7, and the liquid gasket 1 is deformed and adheres closely by being fastened by the bolt 8 and the nut 9 which are fastening members. Then, the seal portions 10A and 10B are sealed.

As shown in FIG. 2, the liquid gasket 1 mounted on the pipe 6 is used as the liquid gasket 1 before being used for the pipe 6, and the liquid gasket material 2 formed in a sheet shape. The seal portion 10 is provided with two protective sheets 3 (3A, 3B) provided on both sides (both sides) of the material 2.
It is formed so as to approximate the shape of. That is, the liquid gasket 1 is formed in a ring shape, the inner diameter portion thereof is the tube hole 5 corresponding to the tube 6, and the bolt 8 penetrates the portion of the tube 6 corresponding to the bolt hole 11. A through hole 4 is formed.

The liquid gasket material 2 is made of silicone rubber or
It is composed of a material containing chlorosulfonated polyethylene as a main component and a volatile solvent added thereto. In the uncured state, this is a paste or putty and has an adhesive property, but when exposed to air, the volatile solvent evaporates and cures at room temperature to form an elastic body. Protective sheet 3
(3A, 3B) is made of polyethylene, polypropylene, or other non-breathable material having a peeling property. The protective sheet 3 is provided on both sides of the liquid gasket material 2 in order to prevent the volatile solvent of the liquid gasket material 2 from volatilizing and curing.

Such a liquid gasket 1 is, for example,
It is manufactured as follows. FIG. 3 shows a manufacturing process of the liquid gasket 1 of this embodiment. In this figure, the manufacturing process includes an arrangement step A for supplying the liquid gasket material 2 between the pair of protective sheets 3 and a heating step B for heating the liquid gasket material 2 whose both sides (both sides) are protected by the protective sheet 3. And a rolling step C as a sheet-like forming step of forming the liquid gasket material 2 from the outside of the protective sheet 3 to a substantially uniform predetermined thickness, and rolling from the outside of the protective sheet 3 to the liquid gasket material 2 in the rolling step C. At the same time, a vibrating step D for applying vibration and a cutting step E for cutting the protective sheet 3 and the liquid gasket material 2 into a predetermined size are provided. The protective sheet 3 and the liquid gasket material 2 are carried by a carrying device such as a belt conveyor during each process, and the above-mentioned processing is performed.

In the arranging step A, two protective sheets 3 formed in a strip shape and wound in a roll are provided, and one protective sheet 3A is arranged on the downstream side of the other protective sheet 3B. A gasket material supply device 16 filled with the liquid gasket material 2 is arranged between the protective sheets 3A and 3B. In this arrangement step A, the upstream protective sheet 3B is arranged on a belt conveyor or the like, and the liquid gasket material 2 is supplied thereto from the gasket material supply device 16. Then, by arranging the other protective sheet 3A on the downstream side from above the liquid gasket material 2, the liquid gasket material 2 is covered with the pair of protective sheets 3, and the liquid gasket material 2 is covered with the pair of protective sheets 3, so-called sandwich. Insert it in the shape.

Here, the gasket material supplying device 16 stores, for example, the liquid gasket material 2 in a tank or the like and is naturally flown or pressurized, or a container or the like in which the liquid gasket material 2 is stored in a tubular container or the like. It is possible to adopt the one that is compressed and supplied from the outside. The shape and size of the liquid gasket material 2 to be supplied, the number of gasket material supply devices 16 and the like are the same as the size of the protective sheet 3 and the liquid gasket material 2.
It is appropriately determined depending on the material of the.

In the heating step B, a heating device 17 for heating the upper and lower sides of the liquid gasket material 2 and the protective sheet 3 is installed, and the liquid gasket material 2 is heated from the outside of the protective sheet 3 to soften the liquid gasket material 2. . Here, as the heating device 17, for example, a device in which heating wires or the like are arranged can be adopted.

In the rolling step C, a rolling device 18 provided with two rollers 19 having a predetermined gap is arranged, and the liquid gasket material 2 softened in the heating step B is rolled from the outside of the protective sheet 3. The roller 19 is set to a predetermined gap in advance, and the liquid gasket material 2 covered with the protective sheet 3 is passed between them to spread the liquid gasket material 2 on the entire surface of the protective sheet 3, and at the same time, to a predetermined gap. To the thickness of.

In the vibration step D, a vibration device 20 for vibrating the roller 19 is arranged, and vibration is applied to the liquid gasket material 2 during rolling by the roller 19 provided in the rolling device 18, so that the protective sheet 3 is exposed. The liquid gasket material 2 is easily extended. Here, the amplitude and frequency of vibration applied to the roller 19 are appropriately determined in consideration of the thickness of the liquid gasket material 2, the transport speed, and the like.

In the cutting step E, a cutting device 21 having a cutting blade is arranged to cut the liquid gasket material 2 and the protective sheet 3 into the shape of the sealing portion 10. Here, the cutting device 21 may be one having a cutting blade, one that uses a laser, one that uses heat, or one that punches into a shape similar to the sealing portion 10 using male and female dies. The liquid gasket 1 cut by the cutting step E is accumulated and stored in a storage space. After the cutting of the liquid gasket 1, the remaining sheets of the liquid gasket 1 are collected along a conveyance route different from the liquid gasket 1 after the cutting step E, and are discarded or reused.

When mounting such a liquid gasket 1 on the seal portion 10, the following procedure is performed. First, one protective sheet 3A is peeled off from the liquid gasket 1. The liquid gasket material 2 is exposed on the peeled surface. As shown in FIG. 4 (A), this surface is aligned and attached to the seal portion 10A of the one tube 6A.
Since the liquid gasket material 2 has an adhesive force, it adheres and adheres to the seal portion 10A. In this state, the other protective sheet 3B is attached to the liquid gasket material 2, and the liquid gasket material 2 is prevented from evaporating the volatile solvent by the protective sheet 3B and the seal portion 10A. Therefore, in this state, it is possible to suspend the work and leave it alone.

When the pipe 6 is assembled and joined at the seal portion 10, the other protective sheet 3B of the liquid gasket 1 attached to one pipe 6A is peeled off. The liquid gasket material 2 is exposed on the peeled surface, and the seal portion 10B of the other tube 6B is brought into contact with and closely adhered to this surface for alignment. Thereafter, the bolt 8 is penetrated from the outside of the flange 7 into the bolt hole 11 and the through hole 4 of the liquid gasket 1, and is tightened with the nut 9 from the opposite side as shown in FIG. 4 (B). Since the liquid gasket material 2 is in the form of paste or putty, the bolt 8 and nut 9
As shown in FIG. 1, it is thinly and uniformly extended between the seal parts 10 and is deformed so as to protrude from the gap of the seal part 10 inside the pipe 6 as tightened by the. At this time, if the liquid gasket material 2 squeezes out of the sealing portion 10, it may be wiped off.
In this way, by holding the pipe 6 in a fastened state, the volatile solvent in the liquid gasket material 2 is volatilized and solidified into a rubber, thereby completing the sealing.

According to this embodiment as described above, the following effects can be obtained. (1) That is, since the liquid gasket material 2 is formed in a sheet shape and the protective sheets 3 are provided on both sides, the protective sheet 3 is peeled off when the liquid gasket is used, and the sealing portion 1
If it is attached to No. 0, the liquid gasket material 2 comes into close contact with the relevant portion and it is not necessary to hold it by hand, so that it can be easily attached.
Further, since the liquid gasket 1 is formed in a sheet shape, the thickness can be adjusted in advance and the liquid gasket 1 can be formed uniformly over the entire surface, and the quality can be made uniform regardless of the skill of the operator. Furthermore, since the liquid gasket material 2 is covered with the protective sheet 3, the volatile solvent in the liquid gasket material 2 does not evaporate and solidify.
It can be deformed and adheres to to obtain good sealing properties.

(2) The liquid gasket 1 is the sealing portion 10
Since it is formed in the shape of, it is not necessary to cut the liquid gasket 1 when using it, and it can be easily installed. Further, if the thickness of the liquid gasket material 2 is set appropriately when the liquid gasket 1 is mounted, the excess amount is small, and the liquid gasket material 2 can be satisfactorily sealed without protruding from the sealing portion 10 more than necessary.

(3) In the disposing step A, the protective sheet 3
Since the liquid gasket material 2 is formed in a sheet shape after being placed in between, the liquid gasket material 2 does not adhere to the device such as the roller 19 and can be prevented from drying and solidifying during the manufacturing process. Can be formed into

(4) Since the rolling process C is provided in the manufacturing process, the protective sheet 3 and the liquid gasket material 2 are attached to the roller 1.
It can be adjusted to a desired thickness by passing it between 9 pieces. Further, the liquid gasket 1 can be continuously manufactured because it is formed into a sheet by passing between the rollers 19.

(5) In the vibration step D by the vibration device 20, the liquid gasket material 2 is formed into a sheet shape by vibrating the roller 19, so that the liquid gasket material 2 easily extends in a sheet shape. Further, in the rolling step C, the tension of the protective sheet 3 due to the resistance force of the liquid gasket material 2 is relieved, and the protective sheet 3 can be prevented from being damaged.

(6) Since the heating step B by the heating device 17 is provided before the rolling step C, the liquid gasket material 2 is softened by heating the liquid gasket material 2, and in the rolling step C, it is easier and more reliable. It can be formed into a sheet.

(7) Since the liquid gasket 1 is cut in advance into the shape of the sealing portion 10 by providing the cutting step E by the cutting device 21, the protective sheet 3 may be peeled off and attached to the sealing portion 10 when used. , Easy to install. Moreover, it is not necessary to cut the liquid gasket 1 at the time of mounting, and the assembly process can be simplified.

(8) According to the method of use as in this embodiment, since the liquid gasket 1 can be attached to the seal portion 10, the liquid gasket 1 is also attached to the seal portion 10A when the liquid gasket 1 is attached. Even when the parts 10B are aligned with each other, unlike the conventional dry gasket, it is not necessary to hold it with one hand, and the position can be surely aligned, so that it can be easily mounted. Especially when the pipe 6 is a large member,
Since the liquid gasket 1 adheres to the seal portion 10, the pipe 6 can be supported by both hands, and the alignment can be performed reliably and easily. Further, even if one of the protective sheets 3A is peeled off and left in the state of being stuck to the seal portion 10A, the other protective sheet 3B prevents the drying, so that the degree of freedom in the assembly process is increased.

It should be noted that the present invention is not limited to the above-described embodiments, and modifications, improvements, etc. within the scope of achieving the object of the present invention are included in the present invention. For example,
In the above-described embodiment, the sheet-like forming step is configured by the rolling step C by the roller 19, but the present invention is not limited to this, and pressing by pressing with two pressing members 24 having flat surfaces as shown in FIG. 5, for example. Step F may be provided.
In the pressing step F, the pressing device 23 including the two pressing members 24 whose planes face each other in parallel is arranged, and the pressing member 2
4 moves up and down to the predetermined gap and liquid gasket material 2
By pressing, the liquid gasket material 2 between the protective sheets 3 is formed to have a predetermined thickness. At this time, as shown in FIG. 5, the pressing member 24 may be provided with an inclined surface or the like so as to enlarge the entrance. In this case, since the surplus liquid gasket material 2 is gradually pushed out along the inclined surface in the inlet direction, the thickness of the liquid gasket material 2 in the outlet direction can be made uniform. Further, the pressing member 24 having an inclined surface may be used as a fixing member having a predetermined gap, and the liquid gasket material 2 and the protective sheet 3 may be passed between these pressing members 24 to form a predetermined thickness by squeezing. Good. At this time, the pressing member 2
The vibrating device 20 may be attached to 4 to vibrate the pressing member 24.

The liquid gasket 1 was cut into the shape of the sealing portion 10 in the cutting step E after being formed into a continuous strip-shaped sheet. For example, the sealing portion 10 was previously formed using a mold having the shape of the sealing portion 10. You may form in the shape of. In this case, one protective sheet 3A formed in the shape of the seal portion 10 is arranged in a mold having the shape of the seal portion 10, and the liquid gasket material 2 is supplied from above to arrange the other protective sheet 3B, It may be formed by pressing with a member having a flat surface such as a flat plate. According to this
Since the shape of the seal portion 10 can be formed without providing the cutting step E, the manufacturing process can be simplified.

The fastening members were the bolts 8 and the nuts 9, but the present invention is not limited to this, and the flanges 7 may be fixed by other fastening members such as clamps.

The heating step B and the vibration step D may be provided if necessary depending on the material of the liquid gasket material 2, the size of the protective sheet 3 and the like, and are not necessarily provided. Further, the cutting step E may be appropriately set as necessary, and when the cutting step E is not provided, for example, the liquid gasket 1 may be wound in a roll shape with a strip-shaped sheet and stored.

Although the shape of the liquid gasket 1 is formed in the shape of the seal portion 10 in the present embodiment, the shape is not limited to this, and the liquid gasket 1 is formed and stored in a large sheet, and only the necessary amount of the necessary amount is formed. You may cut and use. In this case, if the size of the sheet is set according to the storage space, the storage space can be effectively used. Alternatively, the liquid gasket 1 may be formed in a disc shape.
In this case, when the seal portion 10 is formed in a ring shape when it is attached to the flange 7 and peeled off, the central portion of the liquid gasket material 2 does not peel off from the protective sheet 3 and only the seal portion 10 has the liquid gasket material. 2 is attached. Alternatively, the liquid gasket 1 may be formed in an arbitrary shape such as a disc shape, and a dent in the shape of the seal portion 10 may be formed in advance. That is, if the protection sheet 3 is not cut from the top of the protection sheet 3 and only the liquid gasket material 2 inside is provided with a dent in the shape of the seal portion 10, when the seal portion 10 is pasted, the dent portion becomes liquid. The gasket material 2 is likely to be divided.

The shape of the protective sheet 3 does not have to be the same as the shape of the liquid gasket material 2. For example, the liquid gasket material 2 is formed into a ring shape in the shape of the seal portion 10,
The protective sheet 3 may be formed in a disc shape without the tube hole 5. This is prepared by, for example, supplying the liquid gasket material 2 in a ring shape on the protective sheet 3 in the arranging step A, and forming it to a predetermined thickness in the pressing step F or the like. In this case, the tube hole 5 of the liquid gasket material 2 is protected by the protective sheet 3 and is difficult to dry. Even when the one protective sheet 3A is peeled off and attached to the one seal portion 10A and then left as it is, the other protective sheet 3 closes the opening of the tube 6, so that intrusion of dust or foreign matter can be prevented. Also,
Since the liquid gasket material 2 is supplied only to the necessary parts,
Material waste can be minimized.

The shape of the liquid gasket 1 is the sealing portion 1
It may be larger or smaller than the zero shape. For example, when the end of the liquid gasket material 2 is dried without being protected by the protective sheet 3, the liquid gasket 1 is formed larger than the sealing portion 10 in advance, and after the sealing portion 10 is fastened with the fastening member. You can remove the dried part. Alternatively, since the liquid gasket material 2 protrudes from the seal part 10 by fastening the seal part 10 with a fastening member, if the liquid gasket 1 is formed in advance smaller than the seal part 10 in consideration of this, the protrusion can be reduced, It is not necessary or necessary to wipe off unnecessary parts after fastening.

The seal portion 10 is the joint surface of the flange 7 provided on the pipe 6, but is not limited to this, and may be the joint surface of the flange provided on the shaft, and is not limited to the flange, for example, an oil pan. And the joint surface with the crankcase,
It may be anywhere as long as it seals the fixing member.

The best configuration, method and the like for carrying out the present invention have been disclosed above, but the present invention is not limited thereto. That is, the invention is mainly illustrated and described with respect to particular embodiments, but without departing from the scope of the technical idea and object of the invention, the shape of the embodiments described above ,
Those skilled in the art can make various modifications in the material, quantity, and other detailed configurations. Therefore, the description limiting the shapes and materials disclosed above,
It is described as an example for facilitating the understanding of the present invention and does not limit the present invention.Therefore, the name of a member from which some or all of the limitations such as shape and material thereof are removed. The above description is included in the present invention.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a sealed state of a pipe according to an embodiment of the present invention.

FIG. 2 is a sectional perspective view showing a liquid gasket according to an embodiment of the present invention.

FIG. 3 is a schematic diagram showing a method for manufacturing a liquid gasket according to an embodiment of the present invention.

FIG. 4 is a perspective view showing a method of using the liquid gasket according to the embodiment of the present invention.

FIG. 5 is a schematic view showing a modified example of the method for manufacturing a liquid gasket according to the embodiment of the present invention.

[Explanation of symbols]

1 ... Liquid gasket, 2 ... Liquid gasket material, 3 (3
A, 3B) ... Protective sheet, 6 (6A, 6B) ... Tube, 7
(7A, 7B) ... Flange, 8 ... Fastening member bolt, 9 ... Fastening member nut, 10 (10A, 10
B) ... Sealing part, 19 ... Roller, 24 ... Pressing member, A
... Arrangement step, B ... Heating step, C ... Rolling step as sheet-like forming step, D ... Exciting step, E ... Cutting step, F ... Pressing step as sheet-like forming step, G ... Sheet-like forming step.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Hatsuo Ando             400 Yokokura Nitta 400, Oyama City, Tochigi Prefecture             In Lee P-A (72) Inventor Tatsuya Iwasaki             400 Yokokura Nitta 400, Oyama City, Tochigi Prefecture             In Lee P-A (72) Inventor Yasuomi Eto             400 Yokokura Nitta 400, Oyama City, Tochigi Prefecture             In Lee P-A

Claims (9)

[Claims] 1. A liquid gasket (1) comprising: a sheet-shaped liquid gasket material (2); and a pair of protective sheets (3) provided on both sides of the liquid gasket material (2). Liquid gasket (1) characterized in that 2. The liquid gasket (1) according to claim 1, wherein the shape of the liquid gasket (1) is the liquid gasket.
A liquid gasket (1) having a shape of a sealing portion (10) sealed by (1). 3. A method of manufacturing a liquid gasket (1), comprising: an arrangement step (A) of arranging the liquid gasket material (2) between two protective sheets (3), and the protective sheet (3). From the outside of the liquid gasket material
A method for producing a liquid gasket (1), comprising a sheet-like forming step (G) of extending (2) into a sheet. 4. The method for manufacturing a liquid gasket (1) according to claim 3, wherein the sheet-form forming step (G) is performed on the liquid gasket material.
(2) and a liquid gasket comprising a rolling step (C) of forming the protective sheet (3) between rollers (19) having a predetermined gap to form a predetermined thickness.
The manufacturing method of (1). 5. The method for producing a liquid gasket (1) according to claim 3, wherein the sheet-form forming step (G) is performed on the liquid gasket material.
(2) and a liquid gasket (1) comprising a pressing step (F) in which the protective sheet (3) is pressed to a predetermined gap by two flat members (24) to form a predetermined thickness. ) Manufacturing method. 6. The method for producing a liquid gasket (1) according to any one of claims 3 to 5, wherein the liquid gasket material (2) is vibrated before or at the same time as the sheet forming step (G). A method for producing a liquid gasket (1), which comprises a vibrating step (D) for giving 7. The method for producing a liquid gasket (1) according to any one of claims 3 to 6, wherein the liquid gasket material (2) is heated before the sheet-forming step (G). A method for producing a liquid gasket (1), comprising a heating step (B). 8. The method for producing a liquid gasket (1) according to claim 3, wherein the liquid gasket is provided after the sheet-forming step (G).
A method for producing a liquid gasket (1), comprising a cutting step (E) for cutting (1) into a predetermined shape. 9. A pair of sealing parts (1) for connecting the liquid gaskets (1) according to claim 1 or 2 to each other.
0), wherein one of the pair of protective sheets (3A) is peeled off from the liquid gasket (1), and one protective sheet (3) of the liquid gasket (1) is used.
The surface from which A) has been peeled off is attached to one (10A) of the sealing parts, and then the other (3B) of the pair of protective sheets is peeled off from the liquid gasket (1), and the other protective sheet (3B) is attached. The other side (10B) of the seal parts is brought into contact with the surface of the liquid gasket (1) that has been peeled off, and then the pair of seal parts (10) are fastened by fastening members (8, 9) from both sides, thereby Sealing part (10)
A method for using the liquid gasket (1), which is characterized in that the above-mentioned sealing is performed.