JP7519399B2 - Remake Sheet - Google Patents

Description

The present invention relates to a remake sheet.

Conventionally, most remake sheets have been made by providing a foamed polyvinyl chloride resin layer on wallcovering base paper, and then laminating a film such as an ethylene-vinyl alcohol copolymer on top of that as a stain-prevention film.
However, in this case, a hot melt agent is required to laminate the film onto the resin layer, which causes a problem of poor workability in producing wallpaper.
Furthermore, such conventional remake sheets had problems such as the surface being easily scratched, color bleeding, low water repellency, and low antibacterial effect.

A conventional remake sheet can be a wallpaper sheet that includes a nonwoven substrate containing at least 50% by weight synthetic polymer fibers and a print applied onto a base coat layer, the nonwoven substrate including a base coat layer applied to and directly adhered to the front side of the nonwoven substrate, the base coat including an emulsion polymer pigment binder and a mineral pigment composition.

However, conventional wallpapers and remake sheets have a soft water-based undercoat layer near the surface, with the substrate underneath, which means that the surface has low water repellency, and the soft surface means it is easily scratched and prone to bleeding. In addition, the surface of the sheet that people come into contact with is prone to absorbing moisture, which can lead to the proliferation of microorganisms such as bacteria and fungi.

The object of the present invention is to provide a remake sheet that is resistant to scratches on the surface, is resistant to bleeding, has excellent water repellency, and/or has a high antibacterial effect.

As a result of extensive research into the above-mentioned problems, the inventors discovered that such problems could be solved by providing a layer containing a nonwoven polyester fiber fabric in the remake sheet, and forming a water-repellent layer by making part of the layer into a high-density fiber layer, thus completing the present invention.

That is, the present invention provides a remake sheet that includes a nonwoven fabric layer, an adhesive layer, and a water-repellent fiber layer between the nonwoven fabric layer and the adhesive layer, in which a surface print layer containing a pigment is formed on the upper layer side of the nonwoven fabric layer, and the nonwoven fabric layer is made of a polyester fiber nonwoven fabric.

The present invention provides a remake sheet that is less susceptible to scratches on the surface, is less susceptible to bleeding, has excellent water repellency, and/or has a high antibacterial effect.

FIG. 1 is a cross-sectional view of a remake sheet showing one embodiment of the present invention.

The remake sheet of one embodiment of the present invention is described in more detail below.

Various numerical values and ranges mentioned in this specification are intended to include the lower or upper limit numerical value itself, unless a special term such as "less than" or "more than/greater than" is used. In other words, for example, a numerical range such as 1 to 10 can be interpreted as including the lower limit of "1" and the upper limit of "10."

The present invention will be described in more detail below with reference to FIG. 1. However, this is merely one embodiment for the purpose of explaining the present invention, and the present invention is not limited to this embodiment.
In one form of the present invention, the remake sheet (10) comprises a nonwoven fabric layer (20), an adhesive layer (30) underlying the nonwoven fabric layer, and a water-repellent fiber layer (40) present between the nonwoven fabric layer (20) and the adhesive layer (30), and a surface print layer (50) to which ink is applied is present on the surface portion of the nonwoven fabric layer.
That is, the remake sheet of the present invention includes, from the side of the object to which the remake sheet is attached, an adhesive layer, a water-repellent fiber layer, and a nonwoven fabric layer, in that order, with the surface print layer located on the surface of the nonwoven fabric layer being the uppermost layer. The surface print layer is made of ink and is located on top of the nonwoven fabric layer, but a part of the ink may be present in the nonwoven fabric layer. That is, there is no clear boundary between the surface print layer and the nonwoven fabric layer, and a part of the surface print layer may be present in the nonwoven fabric layer.
In other words, in this specification, the layer located vertically distal from the surface of the object to which the remake sheet is applied is referred to as the upper layer, and the layer located proximal to the object surface is referred to as the lower layer.

[Nonwoven fabric layer]
The nonwoven fabric layer (20) included in the remake sheet of the present invention is made of a nonwoven substrate mainly containing synthetic fibers. That is, the nonwoven fabric layer may contain, for example, 50% by mass or more, 70% by mass or more, or 90% by mass or more of synthetic fibers relative to the mass of the entire nonwoven substrate. The nonwoven fabric layer may also have a density of usually 10 to 150 g/m ² , for example 20 to 100 g/m ² , or 50 to 100 g/m ² . If the density of the fibers constituting the nonwoven fabric layer is less than 10 g/m ² , the surface is easily scratched, the water repellency is reduced, and the antibacterial effect is reduced. The fiber length of the fibers in the nonwoven fabric layer is usually 0.1 to 20 mm, for example 1 to 10 mm, or 1 to 3 mm, and the average diameter of the fibers may be changed by adjusting the conditions in the manufacturing method of the nonwoven fabric layer, and may be usually 0.1 to 10 μm, for example 0.3 to 8 μm, 0.5 to 7 μm, or 1 to 5 μm. If the fiber length and average diameter of the fibers constituting the nonwoven fabric layer are not within these ranges, the surface will be easily scratched, the water repellency will decrease, and the antibacterial effect will be reduced.
The thickness of the nonwoven fabric layer in the remake sheet (thickness in the vertical direction of the cross section of the remake sheet) may be 0.01 to 3 mm, for example, 0.05 to 2 mm or 0.07 to 1.5 mm. If the thickness of the nonwoven fabric layer is not within the range of 0.01 to 3 mm, the surface is easily scratched, the water repellency is reduced, the antibacterial effect is reduced, and clear surface printing is difficult.

In one embodiment of the present invention, the synthetic fibers of the nonwoven fabric layer may be, for example, polyester-based fibers such as polyester, polyamide-based fibers such as nylon, polyurethane-based fibers such as polyurethane, polyvinyl alcohol-based fibers such as Vinylon, polyacrylonitrile-based fibers such as Exlan and Cashmilon, polyvinyl chloride-based fibers such as Tevilon and Environ, polypropylene-based fibers such as Bylen, polyethylene-based fibers such as polyethylene, and/or polystyrene-based fibers such as polystyrene.
Among them, the nonwoven fabric layer may be made of polyester fibers, and the polyester fibers may be produced by dehydration condensation of a polyhydric alcohol and a polycarboxylic acid. The polyhydric alcohol constituting the polyester fibers may be, for example, a polyhydric alcohol containing a linear and/or branched alkyl group having 1 to 20, 2 to 10, and/or 2 to 6 carbon atoms and, for example, 2 to 8, 2 to 6, and/or 2 to 4 hydroxyl groups. The polycarboxylic acid constituting the polyester fibers may be, for example, a polycarboxylic acid containing a linear and/or branched alkyl group or aryl group having 2 to 20 carbon atoms and, for example, 2 to 8, 2 to 6, and/or 2 to 4 carboxyl groups.
In one embodiment, the synthetic fibers of the nonwoven layer may be polyester fibers, such as polyethylene terephthalate (PET) fibers, polybutylene terephthalate (PBT) fibers, polypropylene fibers, polyamide fibers, nylon fibers, and/or polyethylene fibers, or a combination of two or more types of fibers.

The nonwoven layer may also contain natural fibers in an amount of 50% by mass or less based on the total weight of the fibers constituting the nonwoven layer. That is, the main fibers constituting the nonwoven layer are the synthetic fibers described above, but a certain amount of natural fibers may be included in addition to the synthetic fibers. Examples of natural fibers may include long fibers such as rayon, cotton, or wool; woody fibers such as those from deciduous or coniferous trees; and other cellulosics such as flax, esparto grass, milkweed, straw, jute, or bagasse, among others. When these fibers are included, they may generally be added to the nonwoven layer by co-production techniques. By including these natural fibers in the nonwoven layer, a carbon-free and environmentally friendly remake sheet can be obtained.

The nonwoven layers may be produced by a variety of methods, including, but not limited to, spunbond, dry-laid, wet-laid, meltblown, thermal-bonded, chemical-bonded, needle-punched, and hydroentangled. In a non-limiting example, a spunbond process, a polymeric composition is heated until molten and extruded through a spinneret containing a number of small orifices. As the polymeric composition exits the spinneret, it is quenched with air to produce fibers. The fibers may then be attenuated mechanically or by high velocity air pressure before being deposited on a moving belt or wire. Depending on the die type, the individual long fibers may be separated before being deposited on the forming belt. Spunbond fibers may also be electrostatically charged to the fiber bundle before printing. The fibers may be randomly deposited on the forming belt, or may be more or less oriented by mechanical or pneumatic devices. The fibers of the deposited nonwoven layers may be further bonded together by mechanical compression, thermal bonding, or chemical bonding.

In addition, an antibacterial agent may be kneaded into the fibers contained in the nonwoven fabric layer and/or the surfaces of the fibers may be coated with an antibacterial agent to impart antibacterial properties to the remake sheet. In addition, a functional agent such as a known water-repellent polymer may be kneaded into the fibers contained in the nonwoven fabric layer and/or the surfaces of the fibers may be coated with a functional agent such as a known water-repellent polymer to impart water repellency to the remake sheet.

The remake sheet of the present invention has a small average diameter of the fibers in the nonwoven fabric layer on the surface of the remake sheet and a very large specific surface area, so that the effects of functional agents such as antibacterial agents kneaded into and/or surface-coated on the sheet are fully exerted, resulting in a high antibacterial effect of the remake sheet. In addition, an antifungal agent may be kneaded into the fibers contained in the nonwoven fabric layer and/or coated on the surface of the fibers to impart antifungal properties to the remake sheet. Furthermore, both the antibacterial agent and the antifungal agent may be kneaded into the fibers contained in the nonwoven fabric layer and/or surface-coated.

[Adhesive layer]
Beneath the nonwoven fabric layer is an adhesive layer (30) that adheres the remake sheet to an object.
The adhesive layer is, for example, a layer that is usually made of a water-based adhesive, and may contain, for example, an emulsion polymer binder, but is not particularly limited.
The emulsion polymer may include any synthetic resin that is emulsion polymerized in an aqueous medium and may be stabilized with an emulsifier and/or a protective colloid.

Examples of polymers for use in the emulsion polymer may include, but are not limited to, acrylic monomers, including alkyl acrylate or alkyl methacrylate monomers; vinyl ester polymers, such as vinyl acetate, vinyl acetate ethylene copolymers, and polymers including VeoVa; styrenic polymers; and/or acrylamide polymers.

The emulsion polymer may be either a crosslinked or non-crosslinked polymer. The crosslinked polymer may include pre-crosslinked and/or post-crosslinked monomers. Examples of pre-crosslinked monomers may include those having two functional groups, such as divinylbenzene, allyl (meth or a)acrylate, diallyl phthalate, diallyl maleate, and/or triallyl cyanurate. Examples of post-crosslinked monomers may include N-methylol (meth or a)acrylamide and/or N-alkoxymethyl (meth or a)acrylamide compounds that react upon drying/curing. Specifically, they may include N-methylol acrylamide, N-methylol allyl carbamate, isobutoxymethyl acrylamide, n-butyoxymethyl acrylamide, and/or combinations thereof.

For example, the emulsion polymer may use silicon-based and/or epoxy compounds as crosslinkers, including gamma-acryl and gamma-methacryloxypropyl tri(alkoxy)silanes, gamma-methacryloxymethyl tri(alkoxy)silanes, gamma-methacryloxypropyl methyl di(alkoxy)silanes, vinyl alkyl di(alkoxy)silanes, vinyl tri(alkoxy)silanes, and/or combinations thereof. Epoxy silanes may be used as crosslinkers, as well as glycidyloxypropyl trimethoxy silane, and the like. Additionally, the emulsion polymer may include comonomers having epoxy groups that may be present in, for example, glycidyl acrylate, glycidyl methacrylate, allyl glycidyl ether, and/or vinyl glycidyl ether.
The adhesive layer constituting the remake sheet may usually be 0.01 to 1 mm, for example, 0.05 to 0.5 mm or 0.05 to 0.1 mm. If the thickness of the adhesive layer is less than 0.01 mm, the remake sheet will be easily peeled off from the object and the surface will be easily scratched. On the other hand, if the thickness of the adhesive layer exceeds 1 mm, the surface of the object to which it is attached will be bulky, and the remake sheet will be easily peeled off from the object.

[Water-repellent fiber layer]
Between the nonwoven fabric layer and the adhesive layer is a water-repellent fiber layer (40) that may contain high-density fibers. This water-repellent fiber layer prevents moisture from penetrating from the upper layer (or the surface of the remake sheet) of the remake sheet, and prevents the adhesive layer of the remake sheet from peeling off from the object due to a weakening of the adhesive strength of the remake sheet to the object. It also prevents water from seeping out of the adhesive layer to the surface print layer described below, and prevents the print from bleeding.

The fibers constituting the water-repellent fiber layer may be the same as the fibers constituting the nonwoven fabric layer described above. The fiber length of the fibers in the water-repellent fiber layer is usually 0.1 to 20 mm, for example 1 to 10 mm or 1 to 3 mm, and the average diameter of the fibers may be changed by adjusting the conditions in the manufacturing method of the nonwoven fabric layer, and may be usually 0.1 to 10 μm, for example 0.3 to 8 μm, 0.5 to 7 μm, or 1 to 5 μm. If the fiber length and average diameter of the fibers constituting the water-repellent fiber layer are not within these ranges, the surface will be easily scratched, the water repellency will decrease, and the antibacterial effect will be reduced. In addition, the water-repellent fiber layer may be manufactured by various methods like the nonwoven fabric layer, but may be manufactured by known methods such as spunbonding, dry method, wet method, meltblown method, thermal bond method, chemical bond method, needle punch method, and hydroentanglement method.
The thickness of the water-repellent fiber layer in the remake sheet (thickness in the vertical direction to the cross section of the remake sheet) may be 0.01 to 2 mm, for example 0.03 to 1 mm or 0.05 to 0.7 mm.
The fibers contained in this water-repellent fiber layer may be synthetic and/or natural fibers, as in the nonwoven fabric layer, and may be the same or different fibers as those in the nonwoven fabric layer. The fibers in the water-repellent fiber layer are made of fibers with a higher density than the nonwoven fabric layer, and may have a density of, for example, usually 1 to 200 kg/m ² , for example, 5 to 150 kg/m ² or 10 to 140 kg/m ^2. If the density of the fibers constituting the water-repellent fiber layer is less than 1 kg/m ² , water or dyes will easily penetrate from the upper nonwoven fabric layer to the lower adhesive layer, the remake sheet will easily peel off from the target, the surface will easily be scratched, the water repellency will decrease, and the antibacterial effect will decrease. On the other hand, if the density of the fibers constituting the water-repellent fiber layer exceeds 200 kg/m ² , the remake sheet will easily peel off from the target due to the increase in weight.
The surface of the fibers of the water-repellent fiber layer may be coated with a water-repellent agent such as a fluorine-based or silicone-based water-repellent agent.

In one embodiment, the nonwoven fabric layer and the water-repellent fiber layer may be integrally produced, for example, by passing a fiber web produced by a spunbonding method between two heated rolls set to the same or different surface temperatures.

Specifically, when passing between two heated rolls set to the same surface temperature, the fiber web is passed between a roll engraved with a concave-convex pattern on its surface and a roll with a flat surface (spacing between rolls: usually 0.05-0.5 mm, e.g. 0.07-0.3 mm or 0.08-0.2 mm, etc.) (fiber web feed rate: usually 20-35 m/min, e.g. 23-32 m/min, 25-30 m/min or 28-30 m/min, etc.) and compressed, so that the fiber web on the side of the fiber web in contact with the roll with the concave-convex surface is compressed into the concaves of the roll surface to form a high-density water-repellent fiber layer. On the other hand, the fiber web on the side of the fiber web in contact with the roll with the flat surface is uniformly pressured from the roller surface, so that a nonwoven fabric layer with a lower density is formed than on the side of the roll with the concave-convex surface. The water-repellent fiber layer formed on the side of the roll with the concave-convex surface has the concave-convex pattern engraved on its surface, and this concave-convex surface is in contact with the adhesive layer described below. The uneven surface increases the contact area between the adhesive in the adhesive layer and the water-repellent fiber layer, allowing the remake sheet to be firmly attached to the object.

In one embodiment, when polyethylene terephthalate fibers are used, for example, a fiber web having a thickness of 1 to 5 cm produced by a spunbond method may be passed between two rolls (distance between rolls: usually 0.05 to 0.5 mm, for example 0.07 to 0.3 mm or 0.08 to 0.2 mm, etc.) set to the same surface temperature of 150 to 215°C (fiber web feed speed: usually 20 to 35 m/min, for example 23 to 32 m/min or 25 to 30 m/min, 28 to 30 m/min, etc.) to integrally form a nonwoven fabric layer and a water-repellent fiber layer having a thickness of 0.02 to 5 mm.

The nonwoven fabric layer and water-repellent fiber layer may also be formed by passing a fiber web produced by, for example, a spunbond method between two heat rolls set to different surface temperatures. In this case, by applying pressure to the fiber web by passing it between rolls with flat surfaces, a high-density water-repellent fiber layer is formed on the hotter heat roll side because the fiber web is compressed at a high temperature, and a low-density nonwoven fabric layer is formed on the colder heat roll side because the fiber web is compressed to a smaller degree.

In one embodiment, when polyethylene terephthalate fibers are used, for example, a fiber web having a thickness of 1 to 5 cm produced by a spunbond method may be passed between a roll set at a surface temperature of 160 to 220° C. and a roll set at a different surface temperature of 150 to 215° C. (spacing between rolls: usually 0.05 to 0.5 mm, for example 0.07 to 0.3 mm or 0.08 to 0.2 mm, etc.) (fiber web feeding speed: usually 20 to 35 m/min, for example 23 to 32 m/min or 25 to 30 m/min, 28 to 30 m/min, etc.) to integrally form a nonwoven fabric layer and a water-repellent fiber layer having a thickness of, for example, 0.3 to 1.5 mm.
When the fiber web is passed through rolls set to the same or different surface temperatures, the compression ratio of the fiber web before and after passing through the rolls can usually be 6 to 170 times, for example 10 to 100 times or 20 to 50 times.
Therefore, the nonwoven fabric layer and the water-repellent fiber layer of the remake sheet of the present invention may be produced in a bonded state from a single fiber web produced in a single process.

[Surface print layer]
In addition, the upper layer of the nonwoven fabric layer (20) is coated with ink and dried to adhere closely to the fiber surface of the nonwoven fabric layer to form a surface print layer (40). The ink to be applied to the remake sheet of the present invention is not limited as long as it is a commonly used ink, and a normal ink used for fibers may be used.

[Other ingredients]
The nonwoven fabric layer, adhesive layer and water-repellent fiber layer of the remake sheet of the present invention may contain various additives within the scope of the present invention. Examples of the additives to be contained include flame retardants, release agents, weather resistance stabilizers, antioxidants, antistatic agents, heat stabilizers, lubricants, colorants, surfactants, reinforcing agents and/or fillers.

[Remake sheet]
The thickness of the remake sheet of the present invention may be usually in the range of 0.5 to 10 mm, for example, 1 to 7 mm, 2 to 5 mm. If the thickness of the remake sheet is less than 0.5 mm, it becomes difficult to print ink sufficiently, and the cushioning effect of the nonwoven fabric layer is reduced, which may cause damage to the object. On the other hand, if the thickness of the remake sheet exceeds 10 mm, the weight of the remake sheet becomes large, making it difficult to attach to the object, and it may be easily peeled off from the object due to its own weight.

In addition, in the remake sheet of the present invention, the thickness ratio of the nonwoven fabric layer to the water-repellent fiber layer may be nonwoven fabric layer:water-repellent fiber layer=300:1 to 1:200. If the thickness of the nonwoven fabric layer exceeds 300:1 relative to the water-repellent fiber layer, moisture will easily penetrate into the adhesive layer, making it easier for it to peel off from the target object, and bacteria and fungi will easily grow in the adhesive layer. If the thickness of the nonwoven fabric layer is less than 1:200 relative to the water-repellent fiber layer, the surface will be easily scratched and ink will not easily penetrate. In addition, the thickness ratio of the nonwoven fabric layer to the adhesive layer may be nonwoven fabric layer:adhesive layer=300:1 to 1:100. If the thickness of the nonwoven fabric layer exceeds 300:1 relative to the adhesive layer, the remake sheet will easily peel off from the target object. On the other hand, if the thickness of the nonwoven fabric layer exceeds 1:100 relative to the adhesive layer, the remake sheet may tear when peeled off from the object, leaving behind some of the sheet.

[Manufacturing method of remake sheet]
The restyling sheet of the present invention may be manufactured by combining the nonwoven fabric layer, the water-repellent fiber layer, and the adhesive layer in the same manner as in the conventional manufacturing methods of restyling sheets and wallpapers. For example, a composition constituting the adhesive layer may be prepared, and the nonwoven fabric substrate constituting the nonwoven fabric layer and the nonwoven fabric substrate constituting the water-repellent fiber layer may be bonded, entangled, pasted together, and/or assembled, and the prepared composition constituting the adhesive layer may be applied to one side of the water-repellent fiber layer, and then dried or covered with a protective paper.
Various patterns may be printed on the nonwoven fabric layer of the manufactured remake sheet by applying ink. When the ink dries, the printed layer forms the surface print layer of the remake sheet.
Furthermore, the surface print layer and a part of the upper layer of the nonwoven fabric layer may be heat-pressed together. The heat-pressed nonwoven fabric layer may be embossed by a known technique. The remake sheet having an embossed surface can exhibit water repellency.

As an example, a method for producing the remake sheet of the present invention will be described below, but the method for producing the remake sheet of the present invention is not limited thereto.
for example,
(1) Melting a polyester-based material;
(2) spinning the molten material by a spunbond process to produce a nonwoven web;
(3) The nonwoven fabric web is rolled between two heated rolls having the same or different temperatures to produce a nonwoven fabric layer and a water-repellent fibrous layer, wherein the nonwoven fabric layer has a lower fiber density than the water-repellent fibrous layer;
(4) A method for producing a remake sheet, which includes a step of applying an adhesive to the surface of a water-repellent fiber layer, can be mentioned.
In one embodiment, the manufacturing method may further include (5) embossing and thermocompressing the surface of the nonwoven fabric layer.

The remake sheets produced by this method have a surface that is less susceptible to scratches, is less susceptible to color bleeding, has excellent water repellency, and/or has a strong antibacterial effect.

In addition, the materials that can be used in this manufacturing method, the amounts or ratios of the materials, and the characteristics of each component part can be the same as those explained for the remake sheet above, so explanations will be omitted here.

Although one embodiment of the present invention has been described above, it is merely a typical example. Therefore, the present invention is not limited to these described embodiments, and those skilled in the art will easily understand that various aspects and modifications are possible.

[Remake Sheet A (Example)]
1. Pellets of 100% polyethylene terephthalate (melting point: 260° C., moisture content: ≦0.2% (wt/wt)) measuring 4×5×2 mm were fed into a heater and melted into a semi-liquid state. Thin fibers were extruded from a nozzle through a screen (hot air speed: 4.2 m/sec, nozzle swing speed: 0.55 m/min) and heated to bond the fibers together. The resulting nonwoven web was cooled with a fan and compressed by passing it between a roller having an uneven surface and a roller having a flat surface to more firmly bond the fibers together, thereby simultaneously producing a nonwoven layer and a water-repellent fiber layer (drum winding speed: 29 m/min).
2. The fabricated nonwoven layer was placed in a heat transfer machine and a heat transfer film (PET mixed with high temperature ink) was used to transfer a unique design pattern onto the nonwoven layer.
3. An adhesive was applied to the water-repellent fiber layer to form an adhesive layer, and at the same time, a peelable adhesive protective paper was attached to the adhesive layer side.
4. According to different size requirements, the dough was placed into computer die-cutting machine, and then folded or packed into finished products according to requirements.

[Remake Sheet B (Comparative Example)]
A base coat composition consisting of 63% by weight of flake clay (Imerys Astralplate ™), 16% by weight of calcined clay (Imerys Atex ™), 20% by weight of binder (NACRYLIC ™), 0.2% by weight of pigment dispersant (Also Alcosperse ™), 0.2% by weight of rheology modifier (Hercules CMC 7LT), 0.6% by weight of lubricant (Bercen Berchem ™), 0.008% by weight of defoamer (Cognis Foamaster ™) and 0.008% by weight of free alkali (aqueous ammonia) was applied to a spunbond PET substrate to produce remake sheet B.

[Test method]
[Snug test (resistance to scratches)]
The scratch resistance of the remake sheet was measured in accordance with JIS L1058 Standard Method A (ICI type Mace testing machine method).
Specifically, the test consisted of a mace (spike ball) consisting of a phosphor bronze ball with tungsten carbide nails set at equal intervals on a chain with one end fixed, a guide rod, and a rotating cylinder wrapped with a test piece of the manufactured remake sheet, and the test was conducted under the following conditions.
a) Mace: Diameter 31.8 mm, nail tip radius 0.127 mm, nail protrusion length 9.5 mm, mass (including nail mass) 160 g
b) Rotating cylinder: outer diameter 82 mm, width 210 mm, thickness of coating rubber 3 mm, rotation speed 60/min c) Remake sheet: thickness 7 mm, width 165 mm
d) Guide rod: outer diameter 10 mm, width 122 mm
e) Dimension from top of cylinder to center of guide rod: 60 mm

Two 200 mm x 330 mm remake sheet test pieces were taken from the manufactured remake sheet A and B samples (Example and Comparative Example, respectively), and were sewn cylindrically with the front side facing inward with sewing thread. Next, the cylindrically sewn test piece was turned over, the front side facing outward, and placed in a rotating cylinder with the seam open on both sides to smooth the seam, and a mace was carefully placed on the test piece and rotated 100 times.
After the test, the occurrence of snags or scratches on the remake sheet was visually evaluated according to the following criteria. The results for each sample are shown in Table 1.

Evaluation criteria: ⊚: Almost no snags and/or scratches are visually observed; ◯: Minor snags and/or scratches are visually observed; △: Significant snags and/or scratches are visually observed; ×: Fiber fuzzing and/or deep scratches on the sheet are visually observed

表１に示すとおり、本発明の表面に不織布層を備える本発明のリメイクシートＡでは、目視でほとんどスナッグや傷が認められなかった。一方、表面に下地被膜層を有するポリエチレンテレフタレート繊維のスパンボンド織物であるリメイクシートＢでは目視で目立つスナッグおよび／または傷が認められた。 ·result

As shown in Table 1, almost no snags or scratches were observed visually in the remake sheet A of the present invention having a nonwoven fabric layer on the surface of the present invention. On the other hand, noticeable snags and/or scratches were observed visually in the remake sheet B, which is a spunbonded fabric of polyethylene terephthalate fibers having a base coating layer on the surface.

[Color bleeding test (resistance to color bleeding)]
The evaluation of color bleeding of the remake sheet was carried out by the Daimaru method.
Specifically, test pieces were prepared by cutting out a portion of the remake sheet A of the present invention and the conventional remake sheet produced, and the lower end of the hanging test piece (the sample side of the composite test piece) was immersed in a dilute surfactant aqueous solution in a container. When this aqueous solution was sucked up from the lower end of the test piece to the upper side, the excess dye remaining in the dyed part was sucked up together with it.
After 2 hours, each test piece was removed from the aqueous solution. When the aqueous solution that had been absorbed to the center of the test piece dried, a "edge" was formed. The degree of contamination of this "edge" part was visually judged according to the following criteria.

Evaluation criteria: ◎: No visible staining; 〇: Slight visible staining; ×: Significant visible staining

表２に示すとおり、本発明の表面に不織布層を備える本発明のリメイクシートＡでは、目視で汚染が認められなかった。一方、表面に下地被膜層を有するポリエチレンテレフタレート繊維のスパンボンド織物であるリメイクシートＢでは軽微な汚染が認められた。 ·result

As shown in Table 2, no staining was observed by visual inspection in the remake sheet A of the present invention having a nonwoven fabric layer on the surface of the present invention. On the other hand, slight staining was observed in the remake sheet B, which is a spunbonded fabric of polyethylene terephthalate fibers having a base coating layer on the surface.

[Antibacterial Test]
The antibacterial test of the remake sheet was carried out in accordance with JIS Z 2801.
Test bacteria: Staphylococcus aureus (NBRC 12732)
・Escherichia coli (NBRC 3972)

(1) 0.4 mL of bacterial solution was dropped onto 5 cm square test pieces of remake sheets A and B and remake sheets A and B without added antibacterial agent, and then covered with a 4 cm square film.
(2) Each remake sheet was subjected to static culture at a temperature of 35±1°C and a relative humidity of 90% or higher for 24 hours.
(3) After static cultivation, the test bacteria on the remake sheet were washed and the number of live bacteria per ¹ cm2 was measured.
(4) The antibacterial activity value was calculated using the following formula, and the antibacterial properties were evaluated according to the following criteria.
R = Ut - At
(R: antibacterial activity value, Ut: average logarithm of viable bacteria count per ^cm2 after 24 hours for remake sheets without antibacterial agents, At: average logarithm of viable bacteria count per ^cm2 after 24 hours for remake sheets with antibacterial agents)

・High evaluation standard: ≧2.0
Low: <2.0

表４に示すとおり、本発明の表面に不織布層を備える本発明のリメイクシートＡでは撥水性が認められた。一方、表面に下地被膜層を有するポリエチレンテレフタレート繊維のスパンボンド織物であるリメイクシートＢは抗菌活性が低いことが示された。 ·result

As shown in Table 4, the remake sheet A of the present invention having a nonwoven fabric layer on the surface of the present invention was found to have water repellency. On the other hand, the remake sheet B, which is a spunbonded fabric of polyethylene terephthalate fibers having a base coating layer on the surface, was shown to have low antibacterial activity.

[Water repellency test]
The water repellency test of the remake sheet was carried out in accordance with JIS L 1092.
In detail, three remake sheet test pieces of approximately 200 mm x 200 mm were prepared, the test pieces were attached to a water repellency test device, and 250 ml of water was poured into a funnel on the top of the test device and sprayed onto the test pieces.
After spraying, the test specimen holder was removed from the stand and lightly placed against a hard object to remove water droplets.
The water repellency of the remake sheet after the test was visually judged according to the following criteria.
Evaluation criteria: ◎: No water is found on the surface. 〇: A small amount of water is found on the surface. ×: Wetness is found on the entire surface.

表３に示すとおり、本発明の表面に不織布層を備える本発明のリメイクシートＡでは撥水性が認められた。一方、表面に下地被膜層を有するポリエチレンテレフタレート繊維のスパンボンド織物であるリメイクシートＢでは表面全体に濡れが認められ、撥水性は認められなかった。 ·result

As shown in Table 3, water repellency was observed in the remake sheet A of the present invention having a nonwoven fabric layer on the surface of the present invention. On the other hand, in the remake sheet B, which is a spunbonded fabric of polyethylene terephthalate fibers having a base coating layer on the surface, wetting was observed on the entire surface, and water repellency was not observed.

These experimental results show that the remake sheet of the present invention, which includes a nonwoven fabric layer, an adhesive layer that contacts the object, and a water-repellent fiber layer between the nonwoven fabric layer and the adhesive layer, is less susceptible to scratches on the surface, is less susceptible to color bleeding, has excellent antibacterial properties, and/or is highly water-repellent.

The remake sheet of the present invention can be used in industries that require masking damaged surfaces such as furniture, exterior walls, bicycles, motorbikes, and cars, in order to restore damaged appearances.

10 Remake sheet 20 Nonwoven fabric layer 30 Adhesive layer 40 Water-repellent fiber layer 50 Surface print layer

Claims (6)

A remake sheet comprising a nonwoven fabric layer, an adhesive layer, and a water-repellent fiber layer between the nonwoven fabric layer and the adhesive layer, a surface print layer containing a pigment is formed on the upper layer side of the nonwoven fabric layer, the nonwoven fabric layer being made of a nonwoven fabric of polyethylene terephthalate fiber having a density of 10 to 150 g/ ^m2 , the nonwoven fabric layer and the water-repellent fiber layer being integrally formed, the polyethylene terephthalate fiber being a spunbonded polyethylene terephthalate fiber, the polyethylene terephthalate fiber having an average diameter of 0.1 to 10 μm, and the water-repellent fiber layer having an uneven shape imprinted on the surface of the water-repellent fiber layer on the adhesive layer side . The remake sheet according to claim 1 , characterized in that an antibacterial agent and/or an antifungal agent is kneaded into the polyethylene terephthalate fibers or is surface-coated therewith. The remake sheet according to claim 1, characterized in that the surface is resistant to scratches. The remake sheet according to claim 1, which is characterized by being less prone to color bleeding. The remake sheet according to claim 1, characterized by high water repellency. The remake sheet according to claim 1, characterized by its high antibacterial and antifungal effects.

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