JP2000129222A - Preparation of surface-covered product and sheet for producing surface-covered product - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for smoothly producing a surface-covered product by winding a sheet in the form of a tape in convolutions around an object such as a roll to effect bonding without using a liquid adhesive and an adhesive tape with a release sheet and, in addition, without requiring corrective operations such as reapplication of the sheet, crease elimination and deaeration. SOLUTION: A method for producing a surface-covered product comprises the step A of spirally winding a substrate sheet 1 formed of a water permeable sheet 1a of a polymer or a laminated material obtained by laminating a water permeable backing material on the back of the substrate sheet which is in the state overlaid with a water-sensitive material layer 2 which exhibits adhesion by water imparted thereto around an object 0 in such a manner that the water- sensitive material layer comes to the inside and the step B of effecting bonding between the object 0 and the substrate sheet 1 by imparting water to the outside surface of the wound substrate sheet 1 in convolutions to allow the water- permeable material layer 2 positioning in the inside to exhibit adhesion by the water permeated through the substrate sheet 1 and subsequently drying the surface-covered product.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a surface coating in which a tape-like sheet is wound and adhered to an object such as a roll without using a liquid adhesive or an adhesive tape with a release sheet. , And a sheet therefor.

[0002]

2. Description of the Related Art In order to prevent slippage, a tape is spirally wound around a roll such as a steel roll. As the tape at this time, for example, a polyvinyl chloride or polyurethane is laminated on a woven fabric, and cut into a predetermined width (for example, 30 to 60 mm) to obtain a long tape (for example, 100 to 120 meters). Things are used.

[0003] When using this tape, first clean the surface of the roll, apply a liquid adhesive while rotating the roll, dry for a predetermined time, and then apply the adhesive again from above I do. Then, the tape is spirally wound while applying tension while rotating the roll in a state where the adhesive is semi-dried.

Instead of applying a liquid adhesive to the roll, a method of spirally winding a tape base such as an adhesive tape on which a pressure-sensitive adhesive (adhesive) layer is provided in advance on a tape base is also considered. Can be The surface of the pressure-sensitive adhesive layer of the adhesive tape must be protected by a release sheet such as release paper before the distribution process and before use.

[0005]

The method of applying a liquid adhesive to a roll and spirally winding the tape on the liquid requires manual labor, requires skill in uniform application of the adhesive, and winding. Since it takes time to start and it takes time to completely cure the adhesive, the roll with the tape wound spirally can be used only after leaving it for a few days and aging it sufficiently. There is a problem that it takes time and effort to peel off the adhesive.

A method of spirally winding an adhesive tape provided with a pressure-sensitive adhesive layer on a tape base in advance in a spiral manner is to spirally wind the roll so that there is no gap and edges do not overlap. It's not easy. This is because if a gap or a layer is formed in the middle of winding, the applied adhesive tape cannot be shifted anymore, so it has to be rewound again and restarted from the beginning. In addition, although the release sheet is expensive, it is peeled and discarded at the time of use, so that the tape cost is considerably high, and disposal of the peeled release sheet is also expensive. A method of releasing the back surface of the tape base without using a release sheet is also conceivable.However, at that time, after the tape is wrapped around a roll, the back surface of the tape appears, so the purpose itself of winding the tape to prevent slippage is Will be spoiled. In addition, when the adhesive tape is wide, wrinkles may be generated or air may be caught at the time of sticking, but there is also a problem that it is difficult to extend the wrinkles or remove the air.

Under such a background, the present invention does not use a liquid adhesive or an adhesive tape with a release sheet, and does not require a re-attachment operation, such as removal of wrinkles or air bleeding, and a roll or the like. PROBLEM TO BE SOLVED: To provide a method for smoothly producing a surface coating body in which a tape-like sheet is wound and adhered to an object of the present invention, and a sheet (tape) suitable therefor
The purpose is to provide.

[0008]

Means for Solving the Problems The method for producing a surface-coated body of the present invention comprises a laminate comprising a polymer water-permeable sheet (1a) or a water-permeable backing material (1b) laminated on the back side thereof. The base material sheet (1) is coated on the inner surface with a water-sensitive material layer that exhibits adhesive strength by applying water.
(A) spirally winding the object (O) with the water-sensitive material layer (2) inside, with (2) layered, and the wound base sheet Water is applied to the outer surface of (1), and the water permeated through the base sheet (1) expresses the adhesive force of the water-sensitive material layer (2) located on the inner side, and then is dried to obtain the target. It is characterized by comprising a step B for achieving adhesion between the object (O) and the base sheet (1).

The sheet for producing a surface-coated body of the present invention comprises a base sheet (1) made of a polymer water-permeable sheet (1a) or a laminate obtained by laminating a water-permeable backing material (1b) on the back side. ) Has a structure in which a water-sensitive material layer (2) is laminated on the inner surface.

[0010]

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

<< Process for Producing Surface-Coated Body >><StepA> Step A consists of a polymer-permeable sheet (1a) or a laminate in which a water-permeable backing (1b) is laminated on the back side thereof. Substrate sheet (1)
With the water-sensitive material layer (2) that expresses adhesive strength by applying water overlaid on the inner surface, and with the water-sensitive material layer (2) inside, the object (O ) Is a step of spirally winding.

The base sheet (1) is made of a polymer water-permeable sheet (1a) as described above, or a water-permeable backing material (1b) is laminated on the back side of the water-permeable sheet (1a). It consists of a laminated material. The surface of the water-permeable sheet (1a) can have any smoothness or roughness depending on the purpose.

As the polymer water-permeable sheet (1a), a rubber, elastomer or resin sheet having open cells is preferably used as long as it has the required strength. Here, examples of the rubber include natural rubber and various synthetic rubbers. Examples of the elastomer include polyurethane elastomers, and examples of the resin include soft polyvinyl chloride, ethylene-vinyl acetate copolymer, and polyvinyl formal. The water-permeable resin sheet (1a) is required to have necessary strength.

Particularly preferred as the polymer water-permeable sheet (1a) are rubbers and elastomers having a structure in which at least one of the front and back surfaces is formed in a skin layer having micropores and the inside is formed in a sponge layer. Or a sheet of resin, especially a flexible polyurethane foam.

Examples of the water-permeable backing material (1b) include nonwoven fabric, woven fabric, cloth, knitted fabric, paper and the like. The laminate is made of a polymer water-permeable sheet on a water-permeable backing (1b).
(1a) Forming the polymer layer after casting or coating the polymer liquid for forming, or a polymer water-permeable sheet (1a) and a water-permeable backing material (1b), using an adhesive Alternatively, it can be obtained by laminating by thermal means without losing water permeability (for example, by point bonding or point fusion).

The above-mentioned base material sheet (1) has a water-sensitive material layer (2) layered on its inner surface (the inner surface at the time of winding), and (2) is spirally wound around the object (O) such that is positioned inside.

The water-sensitive material layer (2) is a layer of a material that exhibits an adhesive force when water is applied, that is, gels or gelatinizes easily upon contact with water (including steam). A layer of material having properties. A typical example of such a material layer is a layer of a fiber material or a resin. Among these, an example of the layer of the fiber material is a non-woven fabric made of a water-soluble fiber,
Examples of resin layers, such as woven fabrics, knitted fabrics, and yarns, are water-soluble or water-dispersible powder or solution coat layers and thin films.

Among the above-mentioned fiber materials, water-soluble synthetic fibers (eg, polyvinyl alcohol-based fibers) and water-soluble natural fibers (eg, alginic acid-based fibers) are used. Non-woven fabrics, woven fabrics, knitted fabrics, yarns, etc., made of fibers obtained by subjecting (a) to cooling gel spinning are particularly preferred. In such fibers, both the surface layer and the central part of the fiber cross section are uniform,
This is because they are excellent in strength, water solubility, and adhesiveness.

Examples of the resin include water-soluble or water-dispersible synthetic resins such as polyvinyl alcohol and sodium polyacrylate, and natural resins such as alginic acid, gum arabic, dextrin and glue.

Water-sensitive material layer for base sheet (1)
The superimposed layer of (2) may be simply superimposed, or both layers may be laminated in advance.

The object (O) may be a cylinder or a column, and its cross section may be any shape such as a circle, an ellipse, an oval, a hexagon, an octagon, and a rounded rectangle. container,
In some cases, a housing, a cabinet, and the like can also be handled as the cylindrical body or the pillar body described here. The material of the object (O) is arbitrary such as metal, plastics, concrete, glass, ceramics, wood / bamboo, paper (paper tube, etc.).

From the viewpoint of application, the object (O) is particularly important in the form of rolls. Examples of the rolls include paper, film, cloth (woven fabric, non-woven fabric, knitted fabric, etc.), foil, thin plate, and various types of rolls. A typical example is a roll for continuously handling or transporting articles or the like, and a roll used as a core material is also exemplified. In addition to rolls, shafts, shafts, bats, grips, and building pillars are also important.

When the substrate sheet (1) is spirally wound around the object (O), it is usual to employ a winding method in which there is no gap and the edges do not overlap. is there. However, depending on the application, it may be wound around a roll so as to leave a certain gap, or wound around the roll so that tape edges overlap.

The above-mentioned substrate sheet (1)
(O) to adjust the surface properties,
Or, it is useful as a sheet for decoration and replacement when the effect is reduced by use.

For example, when the object (O) is a roll, typical examples of the adjustment of the surface properties include non-slip or slip control of an object running on a roll, protection of an object running on a roll, and a roll. Rust prevention, physical protection, abrasion resistance, strength improvement, heat resistance improvement, stain resistance, cushioning, water repellency, oil repellency, non-adhesiveness, flatness, rough surface And the like.

<Step B> In step B, water is applied to the outer surface of the base sheet (1) wound as described above, and the base sheet (1) is positioned inside by the water permeated through the base sheet (1). In this step, the adhesion between the object (O) and the base sheet (1) is achieved by developing the adhesive force of the water-sensitive material layer (2) and then drying.

[0027] Water penetration includes water application, watering, water spraying,
This can be achieved by immersion in water or contact with steam. The water temperature or the steam temperature can be set appropriately.

<< Sheet for Surface Coating Production >> As described above, the superposition of the water-sensitive material layer (2) on the base material sheet (1) may be a simple superposition, but is previously laminated. It is easier to wind. Therefore, the sheet for producing the surface covering body is made of a polymer water-permeable sheet (1a) or the inside of a base sheet (1) made of a laminate obtained by laminating a water-permeable backing material (1b) on the back side. It is preferable that the surface has a structure in which a water-sensitive material layer (2) is laminated on the surface. In this case, when the water-sensitive material layer (2) is a fiber material layer, for example, the inside surface of the base sheet (1) is wetted with water and then excess water is added as necessary. This can be achieved simply by wiping, bringing the fiber material into contact with its wet surface, and allowing it to air dry. Water sensitive material layer
When (2) is a resin layer, for example, a base sheet
This can be achieved by forming a coating layer or a thin film of a water-soluble or water-dispersible powder or liquid on the inner surface of (1) by any method.

The sheet for producing a surface coating has a width of, for example, 10 to 200 mm and a length of several tens of meters to several hundreds.
It is often used in the market in the form of a long meter and wound in a roll.

<Action> In the present invention, in the step A, a base sheet (1) comprising a polymer water-permeable sheet (1a) (or a laminate obtained by laminating a water-permeable backing material (1b) on the back surface side) is used. With the water-sensitive material layer (2) that expresses adhesive strength by applying water on the inner surface thereof, and with the water-sensitive material layer (2) inside, Since it is wound spirally in (O), there is no need to use a liquid adhesive or an adhesive tape with a release sheet, and there is no need for any retouching, wrinkle removal, air bleeding, or any other corrective operation. Not using a liquid adhesive means that the operation is significantly easier. Not using an adhesive tape that is difficult to re-attach means that the operation is remarkably easy, and is also advantageous in terms of material cost because an expensive release sheet is not used.

In the step B, water is applied to the outer surface of the wound base sheet (1), and the water-sensitive material layer (2) positioned inside by the water permeated through the base sheet (1). Since the adhesive force is developed and then dried, the adhesion between the object (O) and the base sheet (1) is intended, so that this step is also easy to operate, regardless of the need for skill. The desired surface coating can be easily obtained.

[0032]

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

Example 1 FIG. 1 is a perspective view showing an example of a sheet for producing a surface covering according to the present invention.

As a polymer water-permeable sheet (1a), a flexible polyurethane foam having a thickness of 1.2 mm having a structure in which both front and back surfaces are formed in a skin layer having micropores and the inside is formed in a sponge layer was prepared. Was used as a substrate sheet (1).

As the water-sensitive material layer (2), a non-woven fabric having a basis weight of 50 g / m ² made of fibers obtained by subjecting a polyvinyl alcohol-based polymer to solvent wet cooling gel spinning (“Kuraron K- II WN type ”).

After wetting one side of the base sheet (1) with water, the water-sensitive material layer (nonwoven fabric) is placed on the wet surface.
(2) was contacted and air-dried. This gives (1) / (2)
(Sheet for producing a surface-coated body) was obtained, which was cut into a width of 38 mm to form a tape.

FIG. 2 is a perspective view showing the stage of step A in the method for producing a surface coating according to the present invention.

The tape (sheet) shown in FIG. 1 was spirally wound while rotating an iron roll (a surface of which had been rust-proofed) as an example of the object (O). At this time, care was taken that there was no gap between the tapes to be wound and that the edges did not overlap, but no adhesive was applied to the roll, and the tape did not have a pressure-sensitive adhesive layer So, re-paste as usual, remove wrinkles,
There is no need to perform any operation such as removing the trapped air.

FIG. 3 is a perspective view showing the stage of step B in the method for producing a surface coating according to the present invention.

After step A, when water was applied to the outer surface of the wound tape, the water immediately penetrated through the base sheet (1), and the water-sensitive material layer (nonwoven fabric) ( 2) was dissolved to form a gel, and an adhesive force was developed.
By allowing this to air dry, adhesion between the object (O) and the base sheet (1) was achieved. Since the base sheet (1) had open cells, drying was easy.

The surface-coated body (coating roll) thus obtained can be used as a roll for continuously handling and transporting paper, film, cloth and the like. When replacing the tape that has been worn or damaged due to use, the coated tape may be peeled off while rotating the roll, a new tape may be wound, and the tape may be adhered in the same manner as described above.

The adhered tape could be peeled off with an appropriate force, and no trace of glue remained on the roll side at that time. After the tape was peeled about half the length of the roll, the tape was wound again around the roll, water was applied thereto, and the roll was dried. As a result, the same coated roll as the first roll was obtained again. Such peeling-rewinding-water application was repeated 10 times or more, but the adhesive strength and peeling strength were not always changed.

Example 2 FIG. 4 is a perspective view showing another example of the sheet for producing a surface covering according to the present invention.

When producing the water-permeable sheet (1a) made of the flexible polyurethane foam of Example 1, the resin liquid is cast onto the water-permeable backing material (1b) made of non-woven fabric or woven cloth (cloth), and then coated. By forming the resin layer into a foam, a base sheet (1) having a layer configuration of (1a) / (1b) and a thickness of 1 mm was obtained. The water-permeable sheet (1a) of the base sheet (1) had a structure in which the free surface at the time of casting was formed in a skin layer having micropores, and the inner and lower surfaces were formed in a sponge layer.

After one side of the base sheet (1) was wetted with water, the water-sensitive material layer (nonwoven fabric) (2) of Example 1 was brought into contact with the wet side and air-dried. As a result, (1) /
(2), more specifically, a sheet (sheet for producing a surface coating) having a layer structure of (1a) / (1b) / (2) was obtained.
It was cut into a width of 0 mm to form a tape.

Using the tape thus obtained, winding on a roll, application of water, and drying were performed in the same manner as in Example 1. As a result, a coated roll having the same properties as in Example 1 was obtained. Was done.

Example 3 One surface of a base sheet (1) comprising a water-permeable sheet (1a) made of a flexible polyurethane foam was coated with polyvinyl alcohol having a saponification degree of 88 mol% to form a water-sensitive material layer ( Example 2 was repeated except that 2) was formed,
A surface coating was produced.

[0048]

According to the present invention, there is no need to use a liquid adhesive or an adhesive tape with a release sheet, and it is not necessary to perform a re-attachment operation, a wrinkle removal operation, an air release operation, or the like.
It is possible to smoothly produce a surface covering body in which a tape-like sheet is wound and adhered to an object such as a roll, and it is extremely advantageous in that no skill is required, the number of work steps, and the work cost.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of a sheet for producing a surface coating according to the present invention.

FIG. 2 is a perspective view showing a stage of a process A in the method for producing a surface covering of the present invention.

FIG. 3 is a perspective view showing a stage of a step B in the method for producing a surface covering according to the present invention.

FIG. 4 is a perspective view showing another example of the sheet for producing a surface covering according to the present invention.

[Explanation of symbols]

(1) ... base sheet, (1a) ... water-permeable sheet, (1b) ... water-permeable backing material, (2) ... water-sensitive material layer, (O) ... object

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4J004 AA04 AA08 AA10 AC00 CA02 CA06 CB01 CB02 CB04 DB01 GA01 4J040 BA141 BA161 BA191 DD021 DF011 JA09 JA14 JB04 LA11 MA02 MA04 MA05 MA06 MA08 MA09 MA10 MA12 MB03 MB04 MB06 MB10 NA05 NA12 PA12

Claims (7)

[Claims] A base sheet (1) made of a polymer water-permeable sheet (1a) or a laminate obtained by laminating a water-permeable backing material (1b) on the back side of the base sheet (1). A water-sensitive material layer (2) that exhibits adhesive strength when water is applied, and the water-sensitive material layer (2)
Is wound inside the object (O) in such a manner that the inside of the base sheet (1) is spirally wound, and water is applied to the outer surface of the wound base sheet (1) to form the base sheet (1). From the step B, the adhesiveness of the water-sensitive material layer (2) located on the inner side is developed by the water that has penetrated therethrough, and then the object (O) is bonded to the base sheet (1) by drying. A method for producing a surface coating, comprising: 2. The method according to claim 1, wherein the polymer water-permeable sheet (1a) is a sheet of rubber, elastomer or resin having open cells. 3. A rubber or elastomer sheet having a structure in which a water-permeable sheet (1a) made of a polymer is formed on a skin layer having micropores on at least the surface side of the front and back surfaces, and the inside is formed on a sponge layer. The method according to claim 1, wherein 4. The method according to claim 1, wherein the water-sensitive material layer (2) is a layer of a fiber material or a resin that exhibits an adhesive force when water is applied. 5. The method according to claim 1, wherein the water-sensitive material layer (2) is a fibrous material made of fibers obtained by subjecting a water-soluble polymer to cold gel spinning. 6. The method according to claim 1, wherein the object (O) is a cylinder or a column. 7. A base material sheet (1) made of a polymer water-permeable sheet (1a) or a laminate obtained by laminating a water-permeable backing material (1b) on the back side of the sheet, A sheet for producing a surface covering having a structure in which a sensitive material layer (2) is laminated.