JPH10119152A - Pressure contact belt for corrugation processing and production of corrugated article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pressure contact belt for corrugation processing that is difficult to cause troubles even when used under a very severe condition of corrugation processing and which has a long service life and a method for manufacturing a corrugated article by using the pressure contact belt so provided. SOLUTION: A belt made of a cylindrical seamless woven cloth for press contacting a sheet to be processed to a corrugated roll in corrugation processing. Threads 1 in a width direction of the belt comprise yarns including a heat- resistant rigid yarn A, and threads 2 in a circumferential direction of the belt comprise yarns including a heat-resistant high strength yarn B. In addition, in weaving the weave comprising longitudinal an transverse threads comprising the belt is integrated and the belt surface is made non-tacky by heat processing yarns F of a fluorine system resin used as a part of the width directions threads 1 and/or the circumferential direction threads 2 at a temperature higher than the fusion point of the fluorine system resin threads after weaving. A corrugated article is manufactured by pressure contact of a sheet to be processed to a corrugated roll of a corrugator using this pressure contact belt.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressing belt for pressing a sheet to be processed to a step roll during corrugating. The present invention also relates to a method for manufacturing a corrugated product using the pressure contact belt.

[0002]

2. Description of the Related Art When manufacturing corrugated cardboard by corrugating, the core is fed to a pair of corrugated step rolls, and the corrugated board is processed. The corrugated portion of the corrugated core is glued and the liner is applied. A method of bonding by pressing and pressing with a press roll is adopted (hereinafter, referred to as a press roll method).

Recently, a method in which a belt is pressed into contact with a step roll on the side to be pasted, and a liner is fed between the step roll and the belt from above a stepped core to bond them together. (Referred to as a pressure contact belt system).

The latter pressure contact belt system is disclosed in JP-A-59-124842, JP-A-4-305443, JP-A-5-329966, and JP-A-6-83.
No. 60, JP-A-6-55675, JP-A-6-55675
297614, JP-A-6-305060,
This is disclosed in JP-A-7-125114.

As a belt used in the pressure contact belt system, Japanese Patent Laid-Open Publication No. Hei 7-60877 uses a seamless endless canvas core in both the longitudinal and width directions of the belt, and a heat-resistant elastomer layer is provided on the surface side thereof. There is shown a wide belt having a structure in which a surface canvas having elasticity in the longitudinal direction of the belt covered with a coating layer having excellent releasability is laminated. The layer structure at this time is
"Skin canvas / heat-resistant elastomer layer / canvas core". The vertical and horizontal cords constituting the canvas core are aromatic polyamide fiber yarns or polyetheretherketone fiber yarns. The outer canvas is a woven fabric using an aromatic polyamide fiber yarn and a urethane elastic fiber as a vertical cord, an aromatic polyamide fiber yarn, a nylon fiber yarn or a polyester fiber yarn as a horizontal cord, or an aromatic polyamide fiber yarn. This is a knitted fabric made of knitted fabric. There is also a statement that the release coating layer covering the surface of the skin is preferably composed of a blend of a heat-resistant elastomer and a powdery fluororesin.

Although there is no description about corrugating, for example, Japanese Unexamined Utility Model Publication No. Hei 6-63536 discloses a conveyor belt used in a paper feeding process.
A heat-resistant fiber base material is impregnated with fluororesin, dried and sintered, and a reinforcing layer formed on this reinforcing layer and a base fabric knitted with heat-resistant fibers is impregnated with fluororesin, dried, sintered and stretched. A heat-resistant laminated conveyor belt having a wear-resistant layer provided with a property is shown. The fluororesin to be impregnated is, according to the embodiment, a dispersion of polytetrafluoroethylene (PTFE).

[0007]

The pressure contact belt for corrugating is used in a high-temperature environment, is used for high-speed running, applies an extremely large tensile force, and has a large vibration.
The object to be pressed has irregularities and is used under extremely severe conditions such that the belt is likely to be wrinkled in the width direction of the belt, and the glue used for bonding is attached.

Conventionally, steel belts have been used as corrugating belts by the press-contact belt method. However, there is a risk of causing human injury when the belt is cut at an infrequent frequency. Occasionally, damage to the apparatus is large, and steel belts are inherently limited in terms of flex fatigue resistance.

The wide belt disclosed in Japanese Patent Application Laid-Open No. 7-60877 has been proposed to solve the problems of the steel belt, but has a fundamental problem that the life is considerably short.

The heat-resistant laminated conveyor belt disclosed in Japanese Utility Model Laid-Open Publication No. 6-63536 has a problem that even if it is used for corrugating, it is easily damaged and its life is considerably short. In addition, using a dispersion of polytetrafluoroethylene (PTFE) as a fluororesin, impregnating and drying a heat-resistant fiber base material or a base fabric woven with knitted heat-resistant fibers,
Although sintering is performed, the process is extremely complicated as described below due to the nature of the dispersion.

That is, the PTFE dispersion is an aqueous colloidal suspension containing a nonionic surfactant, and this dispersion is immersed in a cloth such as a glass cloth, a carbon fiber cloth, or an aromatic polyamide fiber cloth. It is known that a tape for electrical insulation or non-adhesion can be obtained by repeating the operation of drying and firing (sintering). In this dispersion processing of PTFE, if a thick coating is applied at one time, drying causes mud cracks. Therefore, the adhesion amount per application is limited to about 20 μm or less in the thickness of the resin after baking, and the immersion-drying-firing is 5 to 10 μm. (Usually 7 to 8 times) to obtain a desired thickness. However, such a large number of operations requires a great deal of labor, time and heat energy, which causes a significant decrease in productivity and causes an increase in cost.

Under such a background, the present invention provides a pressure contact belt for corrugating, which does not cause trouble and has a long service life despite being used under extremely severe conditions of corrugating. It is another object of the present invention to provide a method for manufacturing a corrugated product using the pressure contact belt.

[0013]

The corrugating press-contact belt of the present invention is a belt made of a tubular seamless woven fabric for pressing a sheet to be processed on a step roll at the time of corrugating, and is a belt in the width direction of the belt. The traveling yarn (1) is composed of a yarn including a heat-resistant rigid yarn (A), and is a traveling yarn in the circumferential direction of the belt.
(2) is composed of a yarn containing heat-resistant high-strength yarn (B), and a fluorine-based yarn used as a part of the width-direction running yarn (1) and / or the circumferential direction running yarn (2) during weaving. Resin thread
(F) The heat treatment at or above the melting point after weaving is such that the vertical and horizontal structures constituting the belt are integrated and the belt surface is non-adhesive.

The method for producing a corrugated product of the present invention comprises:
A corrugated product is manufactured by pressing a sheet to be processed onto a corrugator step roll using the above-mentioned pressing belt.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail.

In the pressure contact belt according to the present invention, the width direction running yarn (1) heading in the width direction of the belt is formed of a yarn including a heat resistant rigid yarn (A). The lateral rigidity of the belt can be ensured by the heat-resistant rigid yarn (A). In this case, it is preferable to use a fluorine resin yarn (F) together with the heat resistant rigid yarn (A) as described later. In addition, other heat-resistant yarns can be used as long as the gist of the present invention is not impaired.

On the other hand, the circumferential running yarn (2) heading in the circumferential direction of the belt is made of a yarn including a heat-resistant high-strength yarn (B). The heat-resistant high-strength yarn (B) ensures the tensile strength in the circumferential direction of the belt. In this case, it is preferable to use a fluorine resin yarn (F) together with the heat-resistant high-strength yarn (B) as described later. In addition, other heat-resistant yarns can be used together as long as the gist of the present invention is not impaired.

The heat-resistant high-strength yarn (B) of the circumferential length running yarns (2) has a well-balanced arrangement of S-twisted yarn and Z-burning yarn in order to prevent meandering during belt running. Desirably. When the S-twisted yarn is represented by S and the Z-burning yarn is represented by Z, the arrangement in a well-balanced manner is, for example, SZS
.., SSZZSSZZ..., And other various variations. When the fluororesin thread (F) is used in combination, the fluororesin thread (F) may be cut into these arrangements regularly (every other or every second thread).

Examples of the heat-resistant rigid yarn (A) include metal fibers (stainless steel fibers, shape memory alloys, etc.),
Examples include yarns made of ceramic fibers, glass fibers, carbon fibers, aramid fibers, polyetheretherketone fibers, polyamideimide fibers, polyimide fibers, polybenzimidazole fibers, liquid crystal polyester fibers, and the like. The heat-resistant rigid yarn (A) may be made of short fibers or long fibers, and if it is made of long fibers, it may be either a monofilament or a multifilament. . Further, a slit yarn obtained by slitting a film may be used.

Examples of the heat-resistant high-strength yarn (B) include, for example,
Examples include yarns made of metal fibers (stainless steel fibers, shape memory alloys, etc.), ceramic fibers, carbon fibers, aramid fibers, polyetheretherketone fibers, polyamideimide fibers, polyimide fibers, polybenzimidazole fibers, liquid crystal polyester fibers, and the like. it can. The heat-resistant high-strength yarn (B) is preferably made of a long fiber, and may be a monofilament or a multifilament. Further, a slit yarn obtained by slitting a film may be used.

As described above, since the heat-resistant rigid yarn (A) and the heat-resistant high-strength yarn (B) are often common, those having properties suitable for their respective roles are selected and used.

In the present invention, when weaving, the width direction running yarn (1) and / or the circumferential direction running yarn (2) are used.
As part of this, a thread (F) of a fluororesin is used.

As the fluororesin thread (F), a single thread of a fluororesin, a covering thread obtained by covering a heat-resistant thread with a single thread of a fluororesin, or a single thread of a fluororesin is used as a heat-resistant thread. And an appropriate number ratio. Here, the single thread of the fluorine-based resin is preferably a film thread obtained by slitting a film of the fluorine-based resin, but is not necessarily limited to the film thread, and any thread such as a yarn or a round thread can be used. . Examples of the heat-resistant yarn are the above-mentioned heat-resistant rigid yarn (A), heat-resistant high-strength yarn (B), and other heat-resistant yarns.

The fluorine resin yarn (F) is preferably a tetrafluoroethylene homo or copolymer yarn. The homo- or copolymer of tetrafluoroethylene is polytetrafluoroethylene (PTFE),
Examples thereof include a tetrafluoroethylene-hexafluoropropylene copolymer (FEP) and a tetrafluoroethylene-perfluoroalkylvinyl ether copolymer (PFA).

In the case of a covering yarn, the covering with a single fluororesin yarn may be performed so as to completely cover the heat-resistant yarn or may be performed so as to cover with a gap like a decorative yarn. . The covering can also be performed in multiple layers, such as first covering a film thread of FEP or PFA having good adhesiveness, and then covering a PTFE film thread thereon.

The production of a belt made of tubular seamless woven fabric is as follows.
It is desirable to use the following method. That is, the circumferential running yarn (2) which has been warped in advance into a helical shape is added to the width running yarn.
(1) is inserted. In the last stage of weaving, it is difficult to make an opening, so that weaving may be completed at the end by hand if necessary. If a seamless belt is manufactured by using this weaving method, the ear tissue will not be frayed.

A belt made of a tubular seamless woven fabric can also be manufactured by a bag weaving method. That is, if weaving is performed by a bag weaving method using a warp and a weft, a seamless (seamless) tubular woven fabric can be manufactured. Bag weaving is a method of arranging warp into front warp and back warp, and forming a single ring by reciprocating the weft two times to form a tubular shape sequentially. Done. When the weaving method is adopted, the warp during weaving becomes the widthwise running yarn (1) of the seamless belt, and the weft during weaving becomes the circumferentially running yarn (2) of the seamless belt. If the obtained tubular bag fabric is cut in the radial direction,
A seamless belt having the desired dimensions can be obtained. In this case, fraying may occur from the cut end. Therefore, measures such as ear clinging and attachment of a reinforcing cloth or a reinforcing sheet are taken at the cut end as necessary.

When a seamless belt is woven using the width direction running yarn (1) and the belt circumferential direction running yarn (2), the texture is plain weave, oblique weave (twill),
A satin weave structure, a change weave structure thereof, or the like can be used. By using an appropriate weave structure, the number of fluororesin threads (F) exposed on the surface side of the belt can be increased.

After weaving, the fluorine resin yarn (F) used as a part of the width direction running yarn (1) and / or the circumferential length running yarn (2) is subjected to a heat treatment at a temperature not lower than its melting point. As a result, the fluororesin yarn (F) flows to integrate the vertical and horizontal structures constituting the belt, and the belt surface becomes non-adhesive. For example, when the fluororesin yarn (F) is a raw film yarn that is an unfired PTFE yarn, the raw film yarn is fired to become a fired yarn, and the vertical and horizontal textures are fused together, Further, at least the surface of the belt becomes a layer obtained by melting and firing a fluororesin.

The temperature of the heat treatment varies depending on the type of the fluorine-based resin. For example, when the fluorine-based resin is PTFE, about 350 to 400 ° C. is appropriate. It can also be.

Other layers can be added to the belt having the above-described structure, if necessary. For example, a fluororesin film layer can be provided on at least one of the front and back surfaces of the belt at an appropriate stage. Further, at an appropriate stage, the belt can be impregnated with a curable resin such as a polyimide-based resin prepolymer from the back side and cured by curing.

In the present invention, the pressure contact belt is used as a belt for pressing a sheet to be processed on a step roll during corrugating, that is, as a belt for bonding a liner from above the stepped core.

The dimensions of the pressure contact belt vary depending on the dimensions of the corrugator step rolls and the space between the rolls.
For example, the width is about 1600 to 3000 mm and the circumference is 20
In most cases, it is about 00 mm or more.

FIG. 1 is a schematic diagram showing an example of a corrugator for producing cardboard. (4) is one stage roll,
(5) is the other roll, (6) is the gluing device, (7) is the core, and (8) is the liner. Pressure contact belt (3) of the present invention
1 is pressed against one of the step rolls (4) via the center core (7) and the liner (8) after the step processing.

<Function> In the pressure contact belt obtained in this manner, the vertical and horizontal structures constituting the belt are integrated by the flow of the fluororesin thread (F) during the heat treatment, and the surface of the belt is reduced. It is non-adhesive and makes the most of the role and durability of the heat-resistant rigid yarn (A), heat-resistant high-strength yarn (B) and fluororesin yarn (F) used in weaving. Therefore, this pressure contact belt is extremely tough and, despite being used under extremely severe conditions for corrugating, hardly causes troubles such as cutting, breakage, wrinkling and meandering, and has a long life. In addition, there is little adhesion of the glue used during the corrugating, and it is easy to remove the glue that has adhered.

[0036]

The present invention will be further described with reference to the following examples.

Example 1 FIG. 2 is an explanatory view showing an example of a pressure contact belt according to the present invention before heat treatment.

As the belt running yarn in the circumferential direction (2), S-twisted and Z-twisted aramid fiber multifilament yarns as examples of heat-resistant high-strength yarns (B), and fluororesin yarns
As an example of (F), PTFE raw tape yarn (raw film yarn) was used. When the S-twisted aramid fiber multifilament yarn is S, the Z-twisted aramid fiber multifilament yarn is Z, and the raw tape yarn of PTFE is F, so that the above-mentioned yarn is repeated in the arrangement unit of SZFSZF.
It was warped like a scallop.

As the widthwise running yarn (1) of the belt, a stainless steel yarn (monofilament yarn or multifilament yarn) as an example of a heat-resistant rigid yarn (A) and a yarn (F) of a fluororesin as an example. A PTFE raw tape yarn (raw film yarn) was prepared.

The above-mentioned raw tape yarn of PTFE is made of PT
The FE fine powder absorbs white oil to form a paste, then extruded into a round bar or sheet to form a preform, and then rolls the preform using a roll before the solvent evaporates, to obtain a raw tape. And the raw tape is slit into a narrow width to form a thread.

The widthwise running yarn (1) was weft-inserted into the circumferential running yarn (2) which had been warped in advance in the manner described above, and woven into a twill or plain weave. The last step, which was difficult to open, was to finish the weaving by hand. As a result, a belt made of tubular seamless woven fabric having a width of 2500 mm and a circumference of 3000 mm was obtained (see FIG. 2). In this belt, since both ear portions have a structure in which the widthwise running yarn (1) inserted into the back is folded back, no fraying occurs.

The belt was baked by heating at 370 to 380 ° C. in a furnace while being held in tension by being suspended between rolls. By firing, PTFE in the woven structure
The raw tape yarn was fired and the raw tape yarn was melt-flowed to fuse the yarns in the vertical and horizontal directions with each other, and a seamless belt was obtained in which the gap and the surface side of the yarn structure were covered with the fired PTFE film.

If necessary, a polyimide resin (Pyre-ML, a linear unsaturated polyimide manufactured by DuPont) is applied to the back side of the seamless belt and impregnated, and then cured to form a reinforcing layer. It can also be formed.

The belt obtained as described above was extremely tough against pulling, had favorable width rigidity, had high heat resistance, and was non-adhesive.

This belt was used as a pressure contact belt for pressing a sheet to be processed on a step roll at the time of corrugating (a pressure contact belt for bonding a liner from above a stepped core) as shown in FIG. When the corrugated cardboard was manufactured, smooth press-bonding could be performed, and the service life of the belt was much longer than the press-contact belt used in the market.

Example 2 Heat-resistant high-strength yarn (2) was used as the running yarn in the circumferential direction of the belt.
A polyetheretherketone fiber multifilament yarn as an example of (B) and a PTFE raw tape yarn as an example of a fluorine resin yarn (F) were used. When the S-twisted polyetheretherketone fiber multifilament yarn is S, the Z-twisted polyetheretherketone fiber multifilament yarn is Z, and the PTFE raw tape yarn is F, the above-mentioned yarns are arranged in SFZFSFZF... The warp was warped so that the unit would repeat.

As the widthwise running yarn (1) of the belt, a stainless steel yarn (monofilament yarn or multifilament yarn) as an example of a heat-resistant rigid yarn (A) and a fluorine resin yarn (F) as an example. A PTFE raw tape yarn was spirally wound and covered.

Thereafter, weaving and heat treatment (firing) were carried out in the same manner as in Example 1 to obtain a pressure contact belt having a width of 2000 mm and a circumference of 2500 mm. This pressure contact belt had the same excellent quality as in Example 1, and was able to stably produce corrugated cardboard.

Example 3 Heat-resistant and high-strength yarn (2) was used as the running yarn in the circumferential direction of the belt.
(B) Using an aramid fiber multifilament yarn as an example, the S-twisted aramid fiber multifilament yarn is S, the Z-twisted aramid fiber multifilament yarn is Z,
When the PTFE raw tape yarn is F, these yarns are S
The warps were warped so that the array units of ZFSZF... Were repeated.

As the widthwise running yarn (1) of the belt, a stainless steel yarn (monofilament yarn or multifilament yarn) as an example of the heat-resistant rigid yarn (A) and a fluororesin yarn (F) as an example of the fluororesin yarn (A) are used. What covered the tape thread of PFA or FEP was prepared.

Hereinafter, weaving (plain weaving) is performed in the same manner as in Example 1.
Is performed, and a PFA or FEP film layer is provided on the surface side of the obtained seamless belt while rolling.
Heat treatment was performed at a temperature equal to or higher than the melting point of FA or FEP. As a result, a pressure contact belt having a width of 3000 mm and a circumference of 3500 mm was obtained. This pressure contact belt had excellent quality as in Example 1, and was able to stably produce corrugated cardboard.

Example 4 Stainless steel yarn (multifilament yarn) as an example of a heat-resistant rigid yarn (G) and a fluororesin are used as warp yarns (to be the widthwise running yarns (1) of the belt) during bag weaving and weaving. As the yarn (F), a twisted yarn having a ratio of 2: 1 with a raw tape yarn of PTFE was used.

As the weft (to be the running yarn (2) in the circumferential direction of the belt) at the time of the weaving by the bag weaving, an S-twisted aramid fiber multifilament yarn as an example of the heat-resistant high-strength yarn (B) and Z
A twisted aramid fiber multifilament yarn alternately aligned was used.

Using the above-mentioned warp and weft yarns, a tubular seamless woven fabric having a width of 2500 mm and a circumference of 3000 mm was woven by a bag weaving method. PTF of seamless woven fabric after weaving
After the raw tape thread of E is impregnated with kerosene once, the roll is pressure-bonded while suspended between the rolls, and the shape is adjusted.
Naturally dried. This was cut in the radial direction to a width of 1600 to 3000 mm, and the cut end was wrapped with PTFE raw tape thread.

PF was applied to the surface side of the obtained seamless belt.
A film layer of A or FEP was provided while rolling, and then heat-treated at a temperature of 360 to 380 ° C. The obtained pressure contact belt had excellent quality according to Example 1, and corrugated board could be manufactured stably.

[0056]

As described in the section of operation, in the pressure contact belt of the present invention, the fluorine-based resin
(F) flows and the vertical and horizontal structures of the belt are integrated and the belt surface is non-adhesive.The heat-resistant rigid yarn used for weaving (A) and the heat-resistant high-strength yarn (B) In addition, the role and characteristic of the thread (F) of the fluororesin are utilized to the maximum.

Therefore, this pressure contact belt is extremely tough, and it is hard to cause troubles such as cutting, breakage, wrinkling, meandering, etc. and has a long service life despite being used under extremely severe conditions for corrugating. is there. In addition, there is little adhesion of the glue used during the corrugating, and it is easy to remove the glue that has adhered.

[Brief description of the drawings]

FIG. 1 is a schematic view showing an example of a corrugator for producing corrugated cardboard.

FIG. 2 is an explanatory diagram showing an example of a pressure contact belt according to the present invention before heat treatment.

[Explanation of symbols]

 (A) ... heat-resistant rigid yarn, (B) ... heat-resistant high-strength yarn, (F) ... fluororesin yarn, (1) ... widthwise running yarn, (2) ... circumferential direction running yarn, (3 )… Press-contact belt, (4)… one-stage roll, (5)… the other-stage roll, (6)… Gluing device, (7)… Center, (8)… Liner

[Procedure amendment]

[Submission date] January 22, 1997

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0028

[Correction method] Change

[Correction contents]

When a seamless belt is woven using the width direction running yarn (1) and the belt circumferential direction running yarn (2), the weave is a plain weave structure, an oblique weave (twill weave) structure, and a satin weave. The weaving structure can be a suitable weaving structure, so that the fluororesin thread (F) exposed on the surface side of the belt can be increased. Weave density is moderate to fine
Sparse ones can be selected as appropriate.

Claims (9)

[Claims] 1. A belt made of a tubular seamless woven fabric for pressing a sheet to be processed on a step roll at the time of corrugating, wherein a running yarn (1) in a width direction of the belt is a heat-resistant rigid yarn.
(A), the yarn running in the circumferential direction of the belt (2)
Is a yarn containing a heat-resistant and high-strength yarn (B), and a fluororesin yarn used as a part of the width-direction running yarn (1) and / or the circumferential direction running yarn (2) during weaving. (F) A pressure contact belt for corrugating, characterized in that the heat treatment at or above the melting point after weaving integrates the vertical and horizontal structures constituting the belt and makes the belt surface non-adhesive. 2. The heat-resistant and high-strength yarn (B) of the circumferential running yarns (2) is one in which S-twisted yarn and Z-burning yarn are arranged in a well-balanced manner. Pressing belt. 3. The fluororesin thread (F) may be a single thread of a fluororesin, a covering thread obtained by covering a heat-resistant thread with a single thread of a fluororesin, or a single thread of a fluororesin. The pressure contact belt according to claim 1, wherein the press contact belt is a twisted yarn twisted with a yarn. 4. The pressing belt according to claim 3, wherein the single thread of the fluororesin is a film thread obtained by slitting a film of the fluororesin. 5. The thread (F) of a fluororesin is a homo- or copolymer thread of tetrafluoroethylene.
5. The pressure contact belt according to any one of items 3 and 4. 6. The tetrafluoroethylene homo- or copolymer is polytetrafluoroethylene (PTFE),
The pressure contact belt according to claim 5, wherein the pressure contact belt is a tetrafluoroethylene-hexafluoropropylene copolymer (FEP) or a tetrafluoroethylene-perfluoroalkylvinyl ether copolymer (PFA). 7. The press-contact belt according to claim 1, wherein the seamless belt is produced by weft-inserting the width-direction running yarn (1) into the warp-shaped warp-direction running yarn (2). 8. The pressure contact belt according to claim 1, wherein the seamless belt is manufactured by a weaving method. 9. A corrugated product produced by pressing a sheet to be processed on a corrugator step roll using the pressure contact belt according to any one of claims 1 to 8. Production method.