JPH08309849A - Backing carving roll - Google Patents

Abstract

PURPOSE: To provide a backing carving roll capable of preventing the deformation of shift preventing projections caused by air contained in the resin constituting a backing layer. CONSTITUTION: A backing carving roll 21 can form a backing layer having shift preventing projections on the rear surface of a mat thereof by bonding the semi-gelled resin R applied to the rear surface of the mat under pressure and consists of an outer wall part 22 having a large number of the molding holes 25 corresponding to the shift preventing projections on the rear surface of the mat provided thereto and an inner wall part 23 having the grooves 26 communicating with the bottom parts of the molding holes 25 provided in the peripheral surface thereof.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a backing engraving roll capable of forming a backing layer having protrusions for preventing displacement on the back surface of a mat by pressing a semi-gelled resin applied on the back surface of the mat. . More specifically, the present invention relates to a backing engraving roll capable of preventing deformation of a deviation preventing projection due to air contained in a resin forming a backing layer.

[0002]

2. Description of the Related Art Conventionally, as a backing engraving roll capable of forming a backing layer having a protrusion for preventing deviation on the back surface of a mat by press-bonding a semi-gelled resin applied on the back surface of the mat, as shown in FIG. Roll 1 as shown in
In some cases, a large number of molding concave portions 2 corresponding to the protrusions on the back surface of the mat for preventing displacement are provided.

[0003]

However, in this engraving roll for backing, when the semi-gelled resin applied to the back surface of the mat is pressure-bonded, air is contained in the resin that has entered the molding recess. In some cases, the presence of this air causes a problem that the resin cannot enter the molding concave portion without a gap and the deviation preventing projection cannot be accurately molded.

A first object of the present invention is to provide an engraving roll for backing which can prevent the deformation of the protrusion for preventing misalignment due to air contained in the resin constituting the backing layer.

Further, since the applied semi-gelled resin is pressure-bonded to the engraving roll for backing, there is a drawback that the tip of the deviation preventing projection is easily deformed when the mat is peeled off from the roll.

A second object of the present invention is to provide an engraving roll for backing which can prevent the deformation of the deviation preventing projection which occurs when the mat is peeled off from the roll.

[0007]

In order to achieve the above object, the invention according to claim 1 has a protrusion for preventing displacement on the back surface of the mat by pressing a semi-gelled resin applied on the back surface of the mat. A backing engraving roll capable of forming a backing layer, wherein an outer wall portion provided with a large number of molding holes corresponding to the protrusions for preventing deviation on the back surface of the mat and a groove communicating with the bottom portion of the molding hole are formed on the peripheral surface. The gist is a backing engraving roll, which is characterized in that it comprises an inner wall portion provided.

The gist of the invention according to claim 2 is that the engraving roll for backing is characterized in that an air vent passage having a diameter smaller than that of the bottom of the molding hole is formed in the bottom of the molding hole of the outer wall portion.

A third aspect of the present invention is a backing engraving roll capable of forming a backing layer having a protrusion for preventing deviation on the back surface of a mat by pressing a semi-gelled resin applied on the back surface of the mat. There, an outer wall portion having a large number of molding holes corresponding to the protrusions for preventing displacement on the back surface of the mat, an inner wall portion having a groove communicating with the molding holes on the peripheral surface, and a cooling portion for cooling the inner wall portion. The gist is a backing engraving roll characterized by comprising

According to a fourth aspect of the present invention, there is provided a backing engraving roll characterized in that the cooling portion is a drum in which a gap is provided inside the inner wall portion to form a water passage between the cooling portion and the inner wall portion. I made it the summary.

A fifth aspect of the present invention has as its gist a backing engraving roll characterized in that an air vent passage having a smaller diameter than the bottom of the molding hole is formed in the bottom of the molding hole of the outer wall portion.

[0012]

In the engraving roll for backing according to claim 1, the semi-gelled resin is applied to the back side of the mat,
When this is pressed against an engraving roll for backing, the resin will enter a large number of molding holes corresponding to the protrusions on the back surface of the mat for preventing the deviation provided on the outer wall portion. At this time, the air contained in the resin moves through the groove communicating with the bottom of the molding hole provided in the peripheral surface of the inner wall to the molding hole in which the resin does not enter, and is discharged to the outside.

In the backing engraving roll of the second aspect, since the air vent passage having a smaller diameter than the bottom of the molding hole is formed in the bottom of the molding hole of the outer wall portion, the projection having the small diameter is formed at the tip. It is possible to mold the deviation prevention projections that it has.

In the engraving roll for backing according to the present invention, when the semi-gelled resin is applied to the back side of the mat and the engraving roll for backing is pressure-bonded thereto,
The resin will enter into a large number of molding holes corresponding to the protrusions for preventing displacement on the back surface of the mat provided on the outer wall portion. At this time,
The air contained in the resin moves through the groove communicating with the bottom of the molding hole provided in the peripheral surface of the inner wall to the molding hole in which the resin does not enter, and is discharged to the outside.

Also, in this engraving roll for backing, since the inner wall portion is cooled from the inside by the cooling portion, the resin that has entered the molding hole, especially the resin at the bottom of the molding hole, is cooled. It becomes hard and can prevent deformation of the tip of the misalignment prevention projection when the mat is peeled off from the roll.

At the same time, in this engraving roll for backing, the resin at the bottom of the molding hole is cooled and becomes hard and closes the bottom of the molding hole, so that the resin can be prevented from entering the groove communicating with the molding hole. It has become.

In the engraving roll for backing according to a fourth aspect of the present invention, the inner wall is formed by flowing water through a water passage formed between the drum and the inner wall portion provided with a gap inside the inner wall portion. The part is cooled, and along with this, the resin in the bottom of the molding hole is cooled and hardened.

In the engraving roll for backing according to the present invention, since the air vent passage having a diameter smaller than that of the molding hole bottom portion is formed in the molding wall bottom portion of the outer wall portion, a small diameter projection is formed at the tip. The tip of the displacement prevention projection can be molded without being deformed.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A backing engraving roll of the present invention will be described in detail below with reference to an embodiment shown in the drawings. As shown in FIG. 1, the backing layer 3 having the deviation preventing protrusions 2 on the back surface of the mat 1 is formed by forming the mat 1 into a number of molding holes 15 corresponding to the pressure roll 12 and the deviation preventing protrusions 2 on the back surface of the mat 1. When it is passed between the engraving roll 21 for backing and the engraving roll 2 for backing, a resin in a semi-gelled state is applied from the T die 14 of the extruder 13 to the back surface of the mat 1.
It can be carried out by pressing it onto No. 1 and then cooling it with a cooling roll 16.

Engraving roll 2 for backing shown in FIGS.
Reference numeral 1 denotes an outer wall portion 22, an inner wall portion 23, and a drum 2 as a cooling portion.
4 and. The outer wall portion 22 is provided with a large number of forming holes 25. The molding hole 25 is formed in a shape corresponding to the deviation preventing projection 2 of the backing layer 3 formed on the back surface of the mat 1, and the groove 26 of the inner wall portion 23 described later is provided on the bottom portion.
Is in communication with. Further, the molding holes 25 are provided in the outer wall portion 22 in an arrangement corresponding to the protrusions 2 for preventing deviation on the back surface of the mat 1. The shape and the arrangement of the molding holes 25 are arbitrary, and may be appropriately determined in consideration of the mat design, displacement prevention effect, and the like. Further, an air vent passage 27 having a diameter smaller than that of the bottom of the molding hole 25 is formed at the bottom of the molding hole 25.
A so-called two-step protrusion, which is a displacement preventing protrusion having a small diameter protrusion at its tip, can be molded.

An inner wall portion 23 is arranged inside the outer wall portion 22. A groove 26 communicating with the bottom of the molding hole 25 is provided on the peripheral surface of the inner wall portion 23. As shown in FIGS. 4 and 5, the semi-gelled resin R is applied to the back surface of the mat 1. When this is pressed against the engraving roll 21 for backing, the air contained in the resin R that has entered the molding hole 25 of the outer wall portion 22 passes through the air vent passage 27 as shown by the arrows in FIGS. 4 and 5. It reaches the groove 26 of the inner wall portion 23, moves to the molding hole 25 in which the resin R has not entered, and is discharged to the outside. In this embodiment, the inner wall 22 is provided in a striped pattern on the peripheral surface, but it may be provided in a grid pattern. In this case, it becomes easier to discharge the air.

The inner wall portion 23 is cooled by the cooling portion. The cooling unit in this embodiment is
The drum 24 is arranged inside the inner wall portion 23 with a gap and forms a water passage W with the inner wall portion 23. As shown in FIGS. 2 and 3, a pipe 28 extending from one end side to the other end side of the roll 21 is arranged in the drum 24, and a water injection pipe (not shown) is provided at one end side of the pipe 28. It is designed to be connected. A plurality of water discharge holes 29 are formed near the other end of the pipe 28.
The water discharged from 9 reaches the one end side of the roll 21 through the water passage W formed between the drum 24 and the inner wall portion 23, and is drained from the drain port 30.

As shown in FIGS. 4 and 6, the inner wall portion 23 is cooled in the process in which water passes through the water passage W to the one end side of the roll 21, and accordingly the forming hole 25 is formed.
The resin R in the air vent passage 27 provided at the bottom is cooled and hardened to form a deviation preventing projection having a small diameter projection at the tip.

In this embodiment, the drum 24, which is arranged with a gap inside the inner wall portion 23 and forms the water passage W between the inner wall portion 23 and the inner wall portion 23, is used as the cooling portion. It is also possible to fill the inside with water or draw a refrigerant pipe from the air conditioner into the roll 21 and apply cold air to the inside of the inner wall portion 23 to cool it. The cooling medium may be a refrigerant pipe that draws in.

The present invention is not limited to the one described in the above embodiment. For example, as shown in FIG. 7, without forming an air vent passage at the bottom of the molding hole 25,
The bottom of the molding hole 25 may be directly communicated with the groove 26 of the inner wall portion 23, or the like, and may be freely changed within the range described in the claims.

[0026]

In the engraving roll for backing according to the first aspect, when the semi-gelled resin is applied to the back side of the mat and the engraving roll is pressure-bonded to the engraving roll for backing, the resin is formed in the forming hole. The air contained in the resin that has entered moves through the groove communicating with the bottom of the molding hole provided on the inner wall peripheral surface to the molding hole where resin has not entered, and is discharged to the outside. The presence of the resin does not allow the resin to enter into the molding hole without a gap, and thus the problem that the deviation preventing projection cannot be accurately molded does not occur.

In the engraving roll for backing according to the second aspect, since the air vent passage having a smaller diameter than the bottom of the molding hole is formed in the bottom of the molding hole of the outer wall, the projection has a small diameter at the tip. It is possible to accurately form the deviation preventing projection without deformation.

In the engraving roll for backing according to claim 3, when the semi-gelled resin is applied to the back surface of the mat and the engraving roll for backing is pressure-bonded to the backing engraving roll,
The air contained in the resin that has entered the molding hole moves to the molding hole where the resin has not entered, through the groove that communicates with the bottom of the molding hole provided on the inner wall peripheral surface, and is discharged to the outside. Therefore, due to the presence of air, there is no problem that the resin cannot enter the molding hole without a gap and the deviation preventing projection cannot be accurately molded.

Further, in this backing engraving roll, the inner wall portion is cooled from the inside by the cooling portion, so that the resin that has entered the molding hole, especially the resin at the bottom of the molding hole, is cooled. It becomes hard and it is possible to prevent the tip of the displacement preventing projection from being deformed when the mat is peeled off from the roll.

At the same time, in this engraving roll for backing, the resin at the bottom of the molding hole is cooled and hardened, and the bottom of the molding hole is closed, so that the resin can be prevented from entering the groove communicating with the molding hole. It is possible to prevent the occurrence of a defective shape of the deviation preventing projection due to the intrusion of the resin into the groove.

In the backing engraving roll of claim 4, the inner wall is formed by flowing water through a water passage formed between the drum and the inner wall, which are arranged with a gap inside the inner wall. Since the part is cooled and the resin in the bottom of the molding hole is cooled and hardened accordingly, effective cooling can be performed with a simple configuration.

In the engraving roll for backing according to the fifth aspect, since the air vent passage having a smaller diameter than that of the bottom of the molding hole is formed in the bottom of the molding hole of the outer wall portion, the projection having the small diameter is formed at the tip. Accurate molding can be performed without deforming the tip of the deviation preventing projection.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing a pressure roll, an engraving roll, and a cooling roll for forming a backing layer having a protrusion for preventing displacement on the back surface of a mat.

FIG. 2 is a partially cutaway perspective view showing an engraving roll for backing of the present invention.

FIG. 3 is a front view in which a part of the engraving roll for backing is also broken.

FIG. 4 is an enlarged sectional view of an essential part of the engraving roll for backing.

FIG. 5 is a schematic diagram showing an air discharge state when a semi-gelled resin is applied to the back surface of the mat and pressure-bonded to the engraving roll for backing.

FIG. 6 is an enlarged cross-sectional view of a main part when a semi-gelled resin is applied to the back surface of the mat and pressure-bonded to the engraving roll for backing.

FIG. 7 is an enlarged cross-sectional view of essential parts when a resin in a semi-gelled state is applied to the back surface side of the mat and the resin is pressure-bonded to a backing engraving roll of another mode.

FIG. 8 is an enlarged cross-sectional view of a main part when a semi-gelled resin is applied to the back surface of the mat and pressure-bonded to a conventional engraving roll for backing.

[Explanation of symbols]

 22 ... Outer wall portion 23 ... Inner wall portion 24 ... Drum 25 ... Molding hole 26 ... Groove 27 ... Air vent passage

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshiko Yamada 51, Yurakucho, Kasamatsu-cho, Hashima-gun, Gifu Prefecture

Claims (5)

[Claims] 1. A backing engraving roll capable of forming a backing layer having protrusions for preventing deviation on the back surface of the mat by pressing a semi-gelled resin applied on the back surface of the mat. An engraving roll for backing, comprising: an outer wall portion having a large number of forming holes corresponding to the deviation preventing projections, and an inner wall portion having a groove communicating with the bottom of the forming holes on the peripheral surface. 2. The engraving roll for backing according to claim 1, wherein an air vent passage having a diameter smaller than that of the bottom of the molding hole is formed in the bottom of the molding hole of the outer wall portion. 3. A backing engraving roll capable of forming a backing layer having a protrusion for preventing deviation on the back surface of the mat by pressing a semi-gelled resin applied on the back surface of the mat. The outer wall portion having a large number of forming holes corresponding to the deviation preventing projections, the inner wall portion having a groove communicating with the forming holes on the peripheral surface, and the cooling portion for cooling the inner wall portion. Engraving roll for backing. 4. The engraving roll for backing according to claim 3, wherein the cooling section is a drum which is arranged inside the inner wall section with a gap therebetween to form a water passage between the cooling section and the inner wall section. 5. The engraving roll for backing according to claim 3, wherein an air vent passage having a diameter smaller than that of the bottom of the molding hole is formed in the bottom of the molding hole of the outer wall portion.