JP2004203033A - Sleeve for press roll and sleeve-equipped press roll - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sleeve for a press roll which, being a specific sleeve, is fitted onto the outside of the press roll to protect its surface and thus enables to prevent the generation of damages on a corrugated roll (and the press roll), to attain a salient reduction of noise and vibration, and to prevent a press mark from being impressed on the liner surface of a corrugated board, which can be removed and attached to the press roll if the sleeve is injured, and which can improve the production speed of the corrugated board, as well as to provide a sleeve-equipped press roll. <P>SOLUTION: The sleeve 1, cylindrical, is provided which is used after fitted to the press roll. The sleeve 1 is composed of the main layer 11 which is cylindrical and consists of a composite material in which a fibrous reinforcing material is bound by a matrix resin. On the peripheral surface of the main layer 11, a first cover layer 12 is provided, and on the inner surface side, a second cover layer 13 is provided. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

  The present invention relates to a sleeve (a tubular structure having a shape like a paper tube) which is fitted around a press roll (particularly, a corrugator press roll). The present invention also relates to a sleeve-mounted press roll equipped with such a sleeve.

  When manufacturing corrugated cardboard using a corrugator, which is a corrugated cardboard manufacturing apparatus, the core is supplied to a pair of corrugated rolls that mesh with each other, and the corrugated core is subjected to corrugating, and the corrugated top of the corrugated corrugated core (ridge portion) is glued. In addition, a method is adopted in which the core and the liner are pasted together between the step roll and the press roll while the liner supplied from the other side is abutted against the glued core (see FIG. 8).

  In many cases, a pair of step rolls are arranged vertically and diagonally or diagonally up and down, and there are two forms of press rolls, one is arranged on the upper step roll side and the other is arranged on the lower step roll side. . In some cases, two press rolls are arranged on the paper supply side and the paper discharge side with respect to the step roll on the bonding side.

  The corrugator step roll and press roll are both made of metal, and the diameters of the step roll and the press roll may be the same or different.

The step roll and the press roll are opposed to each other while maintaining a slight gap. At that time, a device for adjusting the gap between the step roll and the press roll has been proposed. That is, Japanese Patent Application Laid-Open No. 9-207249 (Patent Document 1) discloses a technique for setting each gap between a step roll and a press roll in accordance with a combination of a core and a liner to simplify work and improve efficiency. Have been. Japanese Patent Application Laid-Open No. 8-52824 (Patent Document 2) also discloses a technique similar to that of Patent Document 1.
JP-A-9-207249 JP-A-8-52824

  Corrugator step rolls and press rolls are used under extremely severe conditions, such as being used in a high-temperature environment, subjected to high-speed rotation, and having a large vibration.

  However, since both the corrugator's step roll and press roll are made of metal, they are considerably affected by metal collisions or impacts caused by vibration during operation and high-speed rotation (although the core and liner are interposed). Inevitably, vibration and noise are generated, and pressing lines called press marks are likely to be formed on the liner surface of the cardboard. Further, both the step roll and the press roll are easily damaged, and it is not easy to repair the damage particularly on the step roll side. Therefore, the life of the step roll in contact with the press roll is naturally limited.

  The device for adjusting the gap between the step roll and the press roll as in the above-mentioned Patent Documents 1 and 2 is to solve such a problem, but the device and the control mechanism are complicated. Inevitable.

  Another problem when manufacturing corrugated cardboard with a corrugator is that the bonding between the core and the liner is done by line contact at the top of the stepped core, so the holding time during bonding is instantaneous. Therefore, in order to ensure the bonding between the core and the liner, there is a restriction that the production speed of the cardboard cannot be increased beyond a certain limit. Therefore, it is strongly desired that productivity can be further improved by overcoming such restrictions.

  If the above-mentioned problems can be solved at once by finding a simple means from another viewpoint, its usefulness will be immeasurable.

  Under such a background, the present invention protects the surface of a corrugator press roll by externally attaching a sleeve having a specific structure to the corrugator press roll, thereby preventing damage to the step roll (and the press roll). In addition to this, the noise and vibration are significantly reduced, the press mark on the liner surface of the cardboard is also prevented, and when the sleeve is damaged, it can be attached to and detached from the press roll in a short time. To provide a press roll sleeve that does not hinder production, and that can also increase the corrugated cardboard production speed beyond conventional limits, and to provide a press roll equipped with such a sleeve. The main purpose is to do so.

  The sleeve for a press roll of the present invention is a cylindrical sleeve (11) for external fitting and use on a press roll (2), and the cylindrical sleeve (1) is fiber-reinforced by a matrix resin. It is characterized by being constituted by a cylindrical main layer (11) made of a composite material to which materials are bonded. In this case, the first cover layer (12) may be provided on the outer peripheral surface of the main layer (11), the second cover layer (13) may be provided on the inner peripheral surface side of the main layer (11), or the main layer (11) may be provided. A cushion layer (14) (or a third cover layer (15) and a cushion layer (14)) can be provided between the first cover layer and the second cover layer (13).

The sleeve-mounted press roll of the present invention is
A cylindrical sleeve (11) for external fitting and use on the press roll (2), which is externally fitted to the press roll (2) in an unfixed state, and
The cylindrical sleeve (1) is characterized by comprising a cylindrical main layer (11) made of a composite material in which a fiber reinforcement is bonded by a matrix resin.

  According to the present invention, the cylindrical sleeve (1) having the above specific structure is externally fitted to the press roll (2) in a non-fixed state.

  Therefore, even when used as a press roll used under severe conditions such as a corrugator, damage to the step roll (and the press roll) can be prevented, noise and vibration are significantly reduced, and the liner surface of the cardboard is reduced. Is also prevented from being pressed.

  Even when the sleeve is damaged, it can be attached to and detached from the press roll in a short time, so that there is no hindrance to the production of cardboard.

  When the cushion layer (14) is provided, the required bonding time is increased even when the rotation speed of the step roll and the press roll is increased, because the holding time for bonding the core and the liner is longer. Therefore, the production speed of the corrugated cardboard can be improved as compared with the conventional case, and the productivity is increased.

  Hereinafter, the present invention will be described in detail.

<Sleeve for press roll>
(Layer composition of sleeve (1))
The sleeve for a press roll of the present invention is a cylindrical sleeve (1) to be fitted to a metal press roll (2) for external use.

  This cylindrical sleeve (1) is composed of a cylindrical main layer (11) made of a composite material in which a fiber reinforcement is bonded by a matrix resin.

  It is preferable that a first cover layer (12) is provided on the outer peripheral surface of the cylindrical main layer (11). Preferably, a second cover layer (13) is provided on the inner peripheral surface side of the cylindrical main layer (11).

  Furthermore, a cushion layer (14) is provided between the main layer (11) and the second cover layer (13), or a third layer is provided between the main layer (11) and the second cover layer (13). It is also preferable that the cover layer (15) and the cushion layer (14) are provided in this order.

That is, the cylindrical sleeve (1)
1. Main layer (11),
2. First cover layer (12) / main layer (11),
3. First cover layer (12) / main layer (11) / second cover layer (13),
4. First cover layer (12) / main layer (11) / cushion layer (14) / second cover layer (13),
5. First cover layer (12) / main layer (11) / third cover layer (15) / cushion layer (14) / second cover layer (13),
6. Main layer (11) / second cover layer (13),
7. Main layer (11) / cushion layer (14) / second cover layer (13),
8. Main layer (11) / third cover layer (15) / cushion layer (14) / second cover layer (13)
And the like. It should be noted that addition of another layer as needed does not hinder the present invention unless the gist of the present invention is impaired.

(Main layer (11))
The main layer (11) has a cylindrical shape and is made of a composite material in which a fiber reinforcing material is bonded by a matrix resin.

  Matrix resins include thermosetting resins such as epoxy resin, unsaturated polyester resin, vinyl ester resin, polyimide resin, phenol resin, melamine resin, urea resin, furan resin, silicon resin, polyurethane resin, bismaleimide resin, and oxazolein resin. Resins or cold-setting resins. In particular, an epoxy resin is important, and then an unsaturated polyester resin is important.

  Examples of the matrix resin include various types of resins including fluorine resins, polyamides, polycarbonates, polypropylenes, polyethylenes, polyacetals, polystyrenes, ABS resins, methacrylic resins, polyethylene terephthalates, polyphenylene ethers, polyphenylene sulfides, polysulfones, and polyether ether ketones. Thermoplastic resins can also be used.

As fiber reinforcing materials, carbon fiber, boron fiber, alumina fiber, silica fiber, silicon carbide fiber, glass fiber, metal fiber, polyparaphenylene benzobisoxazole fiber, aramid fiber, polybenzimidazole fiber, polyether ether ketone fiber, Inorganic, carbonaceous and organic fibers (fibers such as polyamideimide fibers, polyimide fibers, liquid crystal polyester fibers, fluororesin fibers, ultrahigh molecular weight polyethylene fibers, polyolefin fibers, polyester fibers, polyamide fibers, acrylic fibers, and vinylon fibers) ). Various whiskers can also be used. It is preferable to select a fiber reinforcing material having a necessary strength and a necessary heat resistance (for example, 180 ° C. or higher, and more preferably 200 ° C. or higher).

  In the case where the sleeve (1) is externally fitted to the press roll of the corrugator, at least a part of the fiber reinforcement in the main layer (11) is made of heat conductive material such as carbon fiber or metal fiber (particularly copper wire). It is desirable to use a high quality material.

  Depending on the type of fiber reinforcing material, it is also preferable to perform a surface treatment such as borane treatment, silane treatment, aminosilane treatment, ozone treatment, oxygen oxidation treatment, plasma treatment, or ultraviolet treatment.

  These fiber reinforcements are particularly preferably rovings, continuous strand mats, roving cloths, yarns, mats, Sudare rovings, etc. made of monofilament yarns or multifilament yarns made of long fibers. A suitable number of these yarns are aligned or twisted, and further re-aligned or re-twisted to form a cord, or a braid thereof is preferably used. Further, a spun yarn, a woolen yarn, a covering yarn (a core yarn in which another yarn or a slit yarn is spirally wound), a film split yarn, a split fiber yarn, or the like may be used.

  The fiber reinforcing material in the cylindrical main layer (11) may be a single layer (single layer) or a multilayer (two or more layers). The fiber reinforced material in each layer may be formed into a seamless (that is, seamless) cylindrical shape by a bag weaving method or a circular knitting method. It may be made into a shape.

  When focusing on each layer, the fiber reinforced material has a main skeleton of filaments running in the length direction of the cylinder (for example, those in which the main filaments are running and arranged in a slender shape in the length direction of the cylinder), or Conversely, it is preferable that the main skeleton has a cylindrical filament running in the circumferential direction (for example, the main filament is helically wound and arranged in a cylindrical circumferential direction). The sub-lines are arranged in a running manner in the other direction (orthogonal direction, oblique direction, random direction) from the main lines. In addition, the main line may run in a cylindrical oblique direction.

  When the fiber reinforcement is formed in multiple layers, it is also preferable to change the running of the main filament in each layer.

  As a method for forming the cylindrical main layer (11), a method of forming a cylindrical shape with a fiber reinforcing material and then impregnating or impregnating the matrix resin, or applying a matrix resin to the fiber reinforcing material, impregnating or impregnating the cylindrical resin, and forming the cylindrical shape. And the like. In this case, a mold for forming a cylindrical shape may be coated with a surface resin in advance.

  In addition, impregnate and laminate the matrix resin with the fiber reinforcement on the mold (or use a prepreg), cover the surface with a film, depressurize and adhere the film to the laminated surface, pressurize at atmospheric pressure and remove A method of foaming, a method of impregnating and laminating a matrix resin in a fiber reinforcing material on a mold (or using a prepreg), covering a bag, pressurizing and heating the whole including the mold in a steam autoclave, After setting the reinforcing material and pouring the matrix resin, closing the mold and curing, placing the fiber reinforcement in the mold, sucking up the matrix resin, injecting the matrix resin, impregnating the matrix resin A method of forming into a cylindrical shape using a prepreg made of fiber reinforced material, while spraying a cut fiber reinforced material (by applying electrostatic coating technology Possible) how to continue to a cylindrical shape initially, it is also possible to employ various molding methods applicable to molding of a fiber-reinforced resin.

(First cover layer (12))
The first cover layer (12) is a layer provided on the outer peripheral surface of the cylindrical main layer (11). This first cover layer (12) is also preferably made of a composite material in which a fiber reinforcement is bonded by a matrix resin. At this time, the same matrix resin and fiber reinforcement as those described in the description of the main layer (11) are used. It is desirable to select at least a part of the fiber reinforcing material having a necessary strength and a necessary heat resistance.

  In many cases, the fiber reinforcing material constituting the first cover layer (12) is preferably a filamentous entangled body such as a nonwoven fabric, a woven fabric, or a knitted fabric.

  The first cover layer (12) constitutes the outermost layer of the sleeve (1) and protects the main layer (11). It is often designed to have properties such as heat resistance, heat resistance, surface smoothness, and adhesive adhesion prevention properties.

(Second cover layer (13))
The second cover layer (13) is a layer provided on the inner peripheral surface side of the cylindrical main layer (11). In many cases, the fiber reinforced material constituting the second cover layer (13) is preferably a filament entangled body such as a filament, a nonwoven fabric, a woven fabric, or a knitted fabric. Since the second cover layer (13) is located at the innermost part of the sleeve (1) and protects the main layer (11), the strength may not be so severe.

  This second cover layer (13) is also preferably made of a composite material in which a fiber reinforcing material is bonded by a matrix resin. At this time, the same matrix resin and fiber reinforcement as those described in the description of the main layer (11) are used. It is desirable to select at least a part of the fiber reinforcing material having a necessary strength and a necessary heat resistance.

  The second cover layer (13) constitutes the innermost layer of the sleeve (1), and comes into contact with the surface of the press roll (2), and the sleeve (1) is fitted to the press roll (2) in an unfixed state. Since it is mounted, it is desirable that it be formed to be easily slippery. For this reason, the second cover layer (13) made of a wire entangled body is made to have a slippery property by, for example, being made of a composite material in which a fiber reinforcing material is bonded by a matrix resin containing fluorine-based resin particles. It is desirable to form.

(Cushion layer (14))
The cushion layer (14) is a layer provided as needed between the cylindrical main layer (11) and the second cover layer (13).

  As the cushion layer (14), for example, a sheet layer of a heat-resistant rubber or elastomer or a layer of a heat-resistant foam is used.

(Third cover layer (15))
When the cushion layer (14) is provided between the cylindrical main layer (11) and the second cover layer (13) as described above, the third cover layer (15) It is a layer provided as needed between the cushion layer (14).

  This third cover layer (15) is also preferably made of a composite material in which a fiber reinforcement is bonded by a matrix resin. At this time, the same matrix resin and fiber reinforcement as those described in the description of the main layer (11) are used. It is desirable to select at least a part of the fiber reinforcing material having a necessary strength and a necessary heat resistance.

(Main layer (11), first cover layer (12), second cover layer (13), third cover layer (15))
The main layer (11), the first cover layer (12), the second cover layer (13), and the third cover layer (15) are separately formed, and each has a cylindrical shape having various layer configurations as described above. The sleeve (1) may be shaped, but if these layers are sequentially formed, the distinction between the layers may not be clear, for example, the entire layer may be regarded as the main layer (11). is there. Even in such a case, there is no problem, and it can be said that that is a preferable embodiment.

(Surface hardness and rigidity of sleeve (1))
It is preferable that at least the surface of the outermost layer among the layers constituting the sleeve (1) has a certain hardness or more (for example, the hardness is 70 degrees or more, particularly about 70 to 85 degrees). Further, it is preferable that the entire sleeve (1) is made as rigid as possible.

<Sleeve-mounted press roll>
In the sleeve-mounted press roll of the present invention, the above-mentioned press roll sleeve (1) is externally fitted to the press roll (2) in a non-fixed state. The non-fixed state is used to easily attach and detach the sleeve (1) to and from the press roll (2).

  As the press roll (2), a press roll for unwinding a roll of paper, a sheet, a web, etc. wound in a roll form, and a press roll for a cutting device for continuously slitting while unrolling them. At first, there are various types, and it is particularly important to use a press roll of a corrugator which is a corrugated cardboard manufacturing apparatus.

  It is preferable that the press roll (2) is provided with a regulating means (2a) for restricting the axial movement of the sleeve (1) externally fitted thereto. One example of the restricting means (2a) is a flange.

  The press roll (2) is usually made of metal. However, in the present invention, an elastic roll may be used as the press roll (2). One example of such a roll is a heat resistant fluoro rubber. When a roll having elasticity is used as a press roll (2) and the outermost layer of the sleeve (1) with a high surface hardness as described above is fitted over the press roll (2), the press roll (2) does not bite into the step roll In this way, the core and the liner can be stuck at high speed and reliably, and noise can be effectively prevented.

  The press roll (2) is a fixed or rotating roll, and is capable of supplying a fluid such as air between the roll and the sleeve (1) externally fitted thereto. Good. At this time, the sleeve (1) can freely rotate with respect to the press roll (2) via the fluid.

  As described above, when the press roll (2) is a fixed or rotating roll and fluid is supplied between the press roll (2) and the sleeve (1) externally fitted thereto. When the press roll (2) is used as a press roll for pressing a corrugator corrugator, which is a corrugated cardboard manufacturing apparatus, for example, the following troubles may occur. That is, the fluid supplied between the press roll (2) and the sleeve (1) externally fitted thereto is pressed at the contact point (P) between the press roll (2) and the step roll (3). In some cases, the fluid escapes from the pressed portion and the cushioning property of the fluid cannot be sufficiently obtained.

  Therefore, when there is a possibility that such a trouble may occur, the outer peripheral side of the press roll (2) on which the sleeve (1) is fitted and fitted, and the press roll (2) and the step roll (3) are It is preferable that auxiliary rolls (7), (7) are provided at both sides of the contact point (P) to suppress the fluid from escaping from the pressed point due to the pressure at the contact point (P).

  Next, the present invention will be further described with reference to examples.

Example 1
FIG. 1 is a perspective view schematically showing an example of a skeleton made of a fiber reinforcing material in a main layer (11) of a cylindrical sleeve (1). In FIG. 1, the fiber reinforced material has a configuration in which the fiber is woven in a slender shape such that the running direction of the fiber is, for example, a cylindrical length direction. In order for the main filament to run in the cylindrical length direction, as a weaving method, a sudare weaving method using a main filament as a warp and a sub-filament as a weft, a bag weaving method, a scab weaving method, and the like can be adopted. . It is also preferable to use a knitted fabric in addition to a woven fabric. For example, if a knitted fabric is formed by a circular knitting method, a cylindrical skeleton that expands and contracts in the radial direction and the length direction can be obtained.

FIG. 2 is a schematic cross-sectional view in the circumferential direction of the skeleton made of the fiber reinforced material of FIG. 1 and shows a case of a single layer. In FIG. 2, black circles, white circles, and circles with dots indicate different types of fiber reinforcing materials, and are selected from, for example, carbon fiber, polyparaphenylene benzobisoxazole fiber, aramid fiber, copper wire, and the like. Fiber material (filaments, aligned products, twisted products,
Re-twisted products). It is preferable that at least a part of the fiber reinforcing material is made of a material having high thermal conductivity such as a copper wire or carbon fiber (shown by a black circle). In addition, it is also preferable to use a twisted product or a retwisted product (shown by circles with scattered points) in which at least a part of the fiber material is combined with a fiber material of a material having high thermal conductivity.

3 to 7 are schematic sectional views in the circumferential direction showing examples of the cylindrical sleeve (1). 3 to 7 have the following layer configuration. In any case, the respective layers are integrally formed by the used matrix resin so as not to cause delamination. In these figures, the matrix resin is indicated by hatching.
Figure 3: Main layer (11)
Figure 4: First cover layer (12) / main layer (11)
Figure 5: First cover layer (12) / main layer (11) / second cover layer (13)
Figure 6: First cover layer (12) / main layer (11) / cushion layer (14) / second cover layer (13)
Figure 7: First cover layer (12) / main layer (11) / third cover layer (15) / cushion layer (14) / second cover layer (13)

The main layer (11) is made of a composite material using the fiber reinforcement of FIG. 1 with an epoxy resin or an unsaturated polyester resin as a matrix resin.

The first cover layer (12) and the third cover layer (15) are a non-woven fiber reinforced material partially using a fiber material of a material having high thermal conductivity (the material used in the main layer (11)). And a composite material using an epoxy resin or an unsaturated polyester resin as a matrix resin.

The second cover layer (13) is a nonwoven fabric-like fiber reinforced material partially using a fiber material of a material having high thermal conductivity (the material is the same as that used in the main layer (11)), It is composed of a composite material using an epoxy resin or an unsaturated polyester resin blended with fluorine resin (polytetrafluoroethylene) particles as a matrix resin.

The curing of the matrix resin in the main layer (11), the first cover layer (12), the second cover layer (13), and the third cover layer (15) is performed by curing the epoxy resin by heating and curing the unsaturated polyester resin. In this case, the curing is performed by ordinary temperature curing or heat curing.

The cushion layer (14) is composed of a heat-resistant rubber / elastomer sheet layer.

The cylindrical sleeve (1) having the above layer configuration is rigid, and the outermost layer has a surface hardness of 70%.
It is about 85 degrees.

FIG. 8 is a schematic diagram showing an example of a corrugator for manufacturing corrugated cardboard. (3), (3) are a pair of step rolls, (4) is a gluing device, (5) is a finger, (6) and (6) are guide rolls, (M)
Is a core, and (L) is a liner. In actual equipment, besides, liner pre-heater,
A core preheater and a winding roll are provided.

FIG. 9 is a front view of a press roll (2) on which a sleeve (1) is fitted. The press roll (2) has a flange (2a) as shown in the figure, and prevents the sleeve (1) externally fitted and mounted in the flange (2a) from moving in the axial direction.

Example 2
In the first embodiment, as the main layer (11) of the cylindrical sleeve (1), the main layer (11) has a configuration in which the running direction of the main filament is woven in a slender shape so as to be in the length direction of the cylinder. In Example 2, a prepreg obtained by impregnating a matrix resin into a fiber reinforced material and primary curing was used,
It was wound in different directions such as a first layer, a second layer, and an n-th layer to form a cylindrical shape.
With respect to the layers other than the main layer (11), a cylindrical sleeve (1) having a structure according to FIGS.

Example 3
In Example 3, the elastic roll made of fluororubber having excellent heat resistance was used.
Used as a press roll (2). Sleeve with high surface hardness of outermost layer as described above
When (1) is fitted over the outside, the press roll (2) is securely bonded to the core and liner at high speed while preventing the press roll (2) from biting into the step roll, and noise is effectively prevented. You.

Examples 4 to 6
FIGS. 10, 11 and 12 are sectional views showing another example of the press roll (2) having the sleeve (1) fitted to the outside.

In FIG. 10, a number of small holes are provided in a rotary metal press roll (2). The air supplied into the press roll (2) is drawn out from the small hole between the press roll (2) and the sleeve (1) and plays a role of an air cushion.

In FIG. 11, a number of small holes are provided in a fixed metal press roll (2). The air supplied into the press roll (2) is drawn out from the small hole between the press roll (2) and the sleeve (1) and plays a role of an air cushion. FIG. 11 (2b) shows a slit groove for air release.

In FIG. 12, a number of small holes are provided in a fixed metal press roll (2). The air supplied into the press roll (2) is drawn out from the small hole between the press roll (2) and the sleeve (1) and plays a role of an air cushion.

Example 7
FIG. 13 is a sectional view showing still another example of the press roll (2) in which the sleeve (1) is externally fitted.

In this embodiment, in the embodiment of FIG. 10 or FIG. 11, the above-mentioned press roll (2) and the outside thereof are located at both sides of the contact point (P) between the press roll (2) and the step roll (3). Auxiliary rolls (7) and (7) are provided to suppress the fluid supplied between the sleeve and the fitted sleeve (1) from escaping from the pressed portion by pressing at the contact portion (P). is there.

The press roll equipped with the above-mentioned sleeve is a press roll for unwinding a roll of paper, sheet, web, etc. wound in a roll shape, and a press roll for a cutting device for continuously slitting while unwinding them. And various other types, but it is particularly useful as a press roll for pressing a corrugator corrugator roll (3) as a corrugated cardboard manufacturing apparatus.

FIG. 3 is a perspective view schematically showing an example of a skeleton made of a fiber reinforcing material in a main layer (11) of a cylindrical sleeve (1). FIG. 2 is a schematic cross-sectional view of a skeleton of the fiber reinforced material of FIG. 1 in a circumferential direction, showing a case of a single layer. FIG. 2 is a schematic sectional view in the circumferential direction showing an example of a cylindrical sleeve (1). FIG. 2 is a schematic sectional view in the circumferential direction showing an example of a cylindrical sleeve (1). FIG. 2 is a schematic sectional view in the circumferential direction showing an example of a cylindrical sleeve (1). FIG. 2 is a schematic sectional view in the circumferential direction showing an example of a cylindrical sleeve (1). FIG. 2 is a schematic sectional view in the circumferential direction showing an example of a cylindrical sleeve (1). It is the schematic diagram which showed an example of the corrugator for cardboard manufacture. FIG. 3 is a front view of a press roll (2) on which a sleeve (1) is externally fitted. FIG. 9 is a cross-sectional view showing another example of the press roll (2) on which the sleeve (1) is externally fitted. FIG. 9 is a cross-sectional view showing another example of the press roll (2) on which the sleeve (1) is externally fitted. FIG. 9 is a cross-sectional view showing another example of the press roll (2) on which the sleeve (1) is externally fitted. FIG. 8 is a cross-sectional view showing still another example of the press roll (2) in which the sleeve (1) is externally fitted.

Explanation of reference numerals

(1) ... Sleeve,
(11)… Main layer,
(12) ... first cover layer,
(13) The second cover layer,
(14)… Cushion layer,
(15) ... third cover layer,
(2)… Press roll,
(2a)… Flange, (2b)… Slit groove,
(3) ... corrugated roll,
(4)… Gluing device,
(5) ... finger,
(6)… guide roll,
(7)… Auxiliary roll,
(M) ... core,
(L)… liner
(P)… the contact point between the press roll (2) and the step roll (3)

Claims (11)

  A cylindrical sleeve (11) for external fitting to a press roll (2) for use, wherein the cylindrical sleeve (1) is made of a composite material in which a fiber reinforced material is bonded by a matrix resin. A press roll sleeve, comprising a cylindrical main layer (11). On the outer peripheral surface of the cylindrical main layer (11), a first cover layer (12) made of a composite material in which a fiber reinforcement is bonded by a matrix resin is provided, and
The sleeve for a press roll according to claim 1, wherein a second cover layer (13) is provided on an inner peripheral surface side of the cylindrical main layer (11).   A cushion layer (14) is provided between the main layer (11) and the second cover layer (13), or a third cover layer (3) is provided between the main layer (11) and the second cover layer (13). 3. The sleeve for a press roll according to claim 2, wherein said cushion layer and said cushion layer are provided in this order.   The press roll sleeve according to claim 1, wherein at least a part of the fiber reinforcement in the main layer (11) is made of a fiber reinforcement made of a material having high thermal conductivity.   The press roll sleeve according to claim 2, wherein at least a part of the fiber reinforced material in the first cover layer (12) is made of a fiber reinforced material having a high heat conductivity. A cylindrical sleeve (11) for external fitting and use on the press roll (2), which is externally fitted to the press roll (2) in an unfixed state, and
The sleeve-mounted press roll, wherein the cylindrical sleeve (1) is constituted by a cylindrical main layer (11) made of a composite material in which a fiber reinforcement is bonded by a matrix resin.   The sleeve-mounted press roll according to claim 6, wherein the press roll (2) is a press roll of a corrugator that is a corrugated cardboard manufacturing apparatus.   7. The press roll according to claim 6, wherein the press roll (2) is provided with restricting means (2a) for restricting the axial movement of the sleeve (1) fitted over the press roll (2).   7. The sleeve-mounted press roll according to claim 6, wherein the press roll (2) is made of metal or a roll having elasticity.   7. The press roll according to claim 6, wherein the press roll is a fixed or rotating roll and fluid can be supplied between the press roll and the sleeve fitted over the press roll. Press roll with sleeve. The press roll (2) is a press roll that presses toward a corrugator corrugator roll (3) that is a corrugated cardboard manufacturing device,
The press roll (2) is a fixed or rotating roll, and is capable of supplying a fluid between the press roll (2) and a sleeve (1) externally fitted thereto; and
The outer peripheral side of the press roll (2) on which the sleeve (1) is fitted, and the press roll (2) and the step roll (3) are placed on both sides of the contact point (P) between the press roll (2) and the step roll (3). Auxiliary roll (7) for suppressing the fluid supplied between (2) and the sleeve (1) externally fitted thereto from escaping from the pressed location by the pressure at the contact location (P). 7. The sleeve-mounted press roll according to claim 6, further comprising (7).