JP2022012541A - Adhesive multiaxial nonwoven fabric and tile unit - Google Patents

Abstract

To provide an adhesive multiaxial nonwoven fabric that can bond a tile without applying adhesive separately and prevents strike-through of an adhesive resin.SOLUTION: An adhesive multiaxial nonwoven fabric includes a multiaxial nonwoven fabric and an adhesive resin portion provided in dots on at least one face of the multiaxial nonwoven fabric. An average yarn thickness T of the multiaxial nonwoven fabric is within the range of 50 to 500 μm. An average dot diameter D of the adhesive resin portion is within the range of 100 to 1500 μm. An average dot height H of the adhesive resin portion is within the range of 5 to 600 μm. An intersection contact rate C of the adhesive resin portion is within the range of 3.0 to 90.0%. The T, D, H and C satisfy the following formula (1): 0.65≤(D1/2×H1/2×(C/100))/T1/2≤30.30...(1)SELECTED DRAWING: Figure 1

Description

The present invention relates to an adhesive multi-axis nonwoven fabric and a tile unit.

An adhesive interlining in which an adhesive resin is adhered to a base cloth (mainly a woven fabric) in a dot shape is known (see, for example, Patent Document 1).

In addition, the tiles are unitized by laminating glass fiber yarns as warps, wefts, and diagonal yarns, and applying an adhesive to a multi-axis non-woven fabric in which the intersections of these yarns are fixed with a binder resin. Is known (see, for example, Patent Document 2).

Japanese Unexamined Patent Publication No. 2015-214764 Japanese Unexamined Patent Publication No. 2006-045971

The present inventors have found that if the adhesive resin is previously attached to the multi-axis nonwoven fabric in the form of dots, the step of applying the adhesive can be omitted and the tile unit can be configured using the multi-axis nonwoven fabric. rice field.

On the other hand, unlike woven fabrics, the present inventors have adhered to the multi-screw nonwoven fabric because the binder resin has already impregnated the threads, especially at the intersections of the threads constituting the multi-screw nonwoven fabric. We have found the inconvenience that resin strike-through is likely to occur. In addition, when a tile unit is composed of a multi-axis non-woven fabric and a plurality of tiles using a press machine, the multi-axis non-woven fabric unintentionally adheres to the press machine due to the influence of the adhesive resin that has run through. We have found that work efficiency can deteriorate.

The present invention has been made in view of the above circumstances, and provides an adhesive multi-axis nonwoven fabric capable of adhering tiles without separately applying an adhesive and preventing strike-through of the adhesive resin. The purpose is. Another object of the present invention is to provide a tile unit containing the adhesive multiaxial nonwoven fabric.

In order to achieve such an object, the adhesive nonwoven fabric of the present invention includes a nonwoven fabric and an adhesive resin portion provided in a dot shape on at least one surface of the nonwoven fabric, and is the nonwoven fabric. Is an adhesive multiaxial nonwoven fabric comprising a plurality of parallel first multifilament yarns and a plurality of crossed multifilament yarns intersecting the first multifilament yarn. The first multifilament thread and the plurality of crossed multifilament threads are fixed by an intersection fixing resin at least at their intersections, and the average thread thickness T of the multiaxial nonwoven fabric is 50 to 50. The average dot diameter D of the adhesive resin portion is in the range of 500 μm, the average dot diameter D of the adhesive resin portion is in the range of 100 to 1500 μm, the average dot height H of the adhesive resin portion is in the range of 5 to 600 μm, and the average dot height H of the adhesive resin portion is in the range of 5 to 600 μm. The intersection contact rate C is in the range of 3.0 to 90.0%, and the T, D, H and C satisfy the following formula (1).
0.65 ≤ (D ^1/2 x H ^1/2 x (C / 100)) / T ^1/2 ≤ 30.30
... (1)

The adhesive multiaxial nonwoven fabric of the present invention has excellent adhesiveness when the T, D, H and C are within the above-mentioned ranges and satisfies the above formula (1), and the back of the adhesive resin. It is prevented from coming off. In the adhesive multiaxial nonwoven fabric of the present invention, if the value of the above formula (1) is less than 0.65, sufficient adhesiveness cannot be provided. On the other hand, in the adhesive multiaxial nonwoven fabric of the present invention, if the value of the above formula (1) exceeds 30.30, strike-through of the adhesive resin cannot be sufficiently prevented.

The intersection contact rate of the adhesive resin portion can be calculated by the following method. First, the surface of the adhesive multiaxial nonwoven fabric of the present invention provided with the adhesive resin portion is observed with a microscope (manufactured by KEYENCE CORPORATION, model name: VHX-600) at a magnification of 20 times. Next, the total number of dot-shaped adhesive resins existing in the visual field is measured. Next, among the dot-shaped adhesive resins existing in the visual field, the number of dot-shaped adhesive resins that make even a slight contact with the intersection where two or more multifilament threads constituting the multiaxial nonwoven fabric intersect is measured. Next, the value of (the number of dot-shaped adhesive resins that come into contact with the intersection even slightly) / (total number of dot-shaped adhesive resins) × 100 is calculated. This value is calculated at at least five different observation points that do not overlap with each other, and the average is taken to calculate the intersection contact rate of the adhesive resin portion.

Further, in the adhesive multiaxial nonwoven fabric of the present invention, the T is in the range of 50 to 500 μm, the D is in the range of 100 to 1500 μm, the H is in the range of 50 to 550 μm, and the C is. However, it is preferable that T, D, H and C satisfy the following formula (2) in the range of 5.0 to 55.0%.
0.80 ≤ (D ^1/2 x H ^1/2 x (C / 100)) / T ^1/2 ≤ 21.90
... (2)

In the adhesive multiaxial nonwoven fabric of the present invention, the T is in the range of 50 to 500 μm, the D is in the range of 100 to 1500 μm, the H is in the range of 50 to 550 μm, and the C is in the range of 50 to 550 μm. When it is in the range of 5.0 to 55.0% and the T, D, H and C satisfy the above formula (2), it has excellent adhesiveness and more reliable strike-through of the adhesive resin. Is prevented.

Further, in the adhesive multiaxial nonwoven fabric of the present invention, the T is in the range of 50 to 350 μm, the D is in the range of 100 to 750 μm, the H is in the range of 50 to 350 μm, and the C is. However, it is preferable that T, D, H and C satisfy the following formula (3) in the range of 5.0 to 35.0%.
0.80 ≤ (D ^1/2 x H ^1/2 x (C / 100)) / T ^1/2 ≤ 10.70
... (3)

In the adhesive multiaxial nonwoven fabric of the present invention, the T is in the range of 50 to 350 μm, the D is in the range of 100 to 750 μm, the H is in the range of 50 to 350 μm, and the C is in the range of 50 to 350 μm. When it is in the range of 5.0 to 35.0% and the T, D, H and C satisfy the above formula (3), it has excellent adhesiveness and more reliable strike-through of the adhesive resin. It is possible to manufacture with more stable quality.

Further, in the adhesive multiaxial nonwoven fabric of the present invention, it is preferable that the multifilament yarn is a glass fiber yarn.

The adhesive multi-axis nonwoven fabric of the present invention has excellent mechanical strength and versatility because the multifilament yarn is a glass fiber yarn. Further, the fact that the multifilament yarn is a glass fiber yarn means that in the tile unit including the adhesive multi-axis nonwoven fabric of the present invention, the rigidity at the time of handling the tile unit is improved, and the heat resistance and dimensional stability at the time of manufacturing the tile unit are stable. Contributes to the improvement of properties and the weather resistance during tile unit construction.

Further, in the adhesive multi-axis nonwoven fabric of the present invention, the plurality of crossed multifilament yarns are obliquely crossed with the first multifilament yarn, and the first oblique multifilament yarn and the first diagonally crossed multifilament yarn. It is preferable that the yarn is composed of a plurality of second oblique multifilament yarns obliquely intersecting the first multifilament yarn from the direction opposite to the oblique multifilament yarn.

The adhesive multi-axis nonwoven fabric of the present invention is an adhesive three composed of the first multifilament yarn, the first oblique multifilament yarn, and the second oblique multifilament yarn. Since it is a non-woven fabric, the occurrence of twisting and deformation due to the oblique multifilament yarn is suppressed, and the productivity is excellent.

Further, in the adhesive multiaxial nonwoven fabric of the present invention, it is preferable that the plurality of crossed multifilament yarns are composed of a plurality of orthogonal multifilament yarns orthogonal to the first multifilament yarn.

The adhesive multi-screw nonwoven fabric of the present invention is an adhesive biaxial nonwoven fabric composed of the first multifilament yarn and the orthogonal multifilament yarn, and thus has particularly excellent productivity.

Further, in the adhesive multiaxial nonwoven fabric of the present invention, the plurality of crossed multifilament yarns are orthogonal to the first multifilament yarn, and the plurality of orthogonal multifilament yarns and the first multifilament yarn are obtained. A plurality of first oblique multifilament yarns obliquely intersecting with the first oblique multifilament yarn and a plurality of second oblique yarns obliquely intersecting the first multifilament yarn from the direction opposite to the first oblique multifilament yarn. It is preferably composed of multifilament threads.

The adhesive multiaxial nonwoven fabric of the present invention comprises the first multifilament yarn, the orthogonal multifilament yarn, the first oblique multifilament yarn, and the second oblique multifilament yarn. Since it is an adhesive quadriaxial non-woven fabric composed of the above, the occurrence of twisting and deformation is suppressed due to the oblique multifilament yarn, and the first Rigidity in the direction orthogonal to the longitudinal direction of the multifilament yarn of the above is improved.

The tile unit of the present invention includes the above-mentioned adhesive multi-axis nonwoven fabric of the present invention and a plurality of tiles.

The schematic diagram for demonstrating one aspect (adhesive triaxial nonwoven fabric) of the adhesive multiaxial nonwoven fabric of this invention. The schematic diagram for demonstrating another aspect (adhesive biaxial nonwoven fabric) of the adhesive multiaxial nonwoven fabric of this invention. The schematic diagram for demonstrating still another aspect (adhesive tetraaxial nonwoven fabric) of the adhesive multiaxial nonwoven fabric of this invention.

Next, embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

As shown in FIG. 1, in one embodiment, the adhesive multiaxial nonwoven fabric 1 of the present embodiment has a plurality of parallel first multifilament threads 2 and the first multifilament threads 2 obliquely. A plurality of intersecting first oblique multifilament threads 3 and a plurality of second oblique threads obliquely intersecting the first multifilament thread 1 from the direction opposite to the first oblique multifilament thread 3. It is composed of an interwoven multifilament thread 4 and an adhesive resin portion 5 provided in a dot shape on these multifilament threads. Here, the first oblique multifilament yarn 3 and the second oblique multifilament yarn 4 correspond to the crossed multifilament yarn intersecting with the first multifilament yarn 2. Further, the adhesive resin portion 5 has a first dot-shaped adhesive resin 51 that comes into contact with an intersection where two or more multifilament threads intersect and a second dot-shaped adhesive resin 52 that does not come into contact with the intersection. included.

As shown in FIG. 2, in another embodiment, the multi-axis nonwoven fabric 1 of the present embodiment has a plurality of parallel first multifilament threads 2 and a plurality of orthogonal to the first multifilament threads 2. It is composed of an orthogonal multifilament thread 6 and an adhesive resin portion 5 provided in a dot shape on these multifilament threads. Here, the orthogonal multifilament yarn 6 corresponds to a crossed multifilament yarn intersecting with the first multifilament yarn 2. Further, the adhesive resin portion 5 has a first dot-shaped adhesive resin 51 that comes into contact with an intersection where two multifilament threads intersect and a second dot-shaped adhesive resin 52 that does not come into contact with the intersection. included.

As shown in FIG. 3, in still another embodiment, the multi-axis nonwoven fabric 1 of the present embodiment is orthogonal to a plurality of parallel first multifilament threads 2 and the first multifilament thread 2. A plurality of orthogonal multifilament threads 6, a plurality of first oblique multifilament threads 3 obliquely intersecting the first multifilament thread 2, and the opposite of the first oblique multifilament thread 3. It is composed of a plurality of second oblique multifilament yarns 4 obliquely intersecting the first multifilament yarn 1 from the direction, and an adhesive resin portion 5 provided in a dot shape on these multifilament yarns. Will be done. Here, the first oblique multifilament thread 3, the second oblique multifilament thread 4, and the orthogonal multifilament thread 6 are crossed multifilament threads that intersect the first multifilament thread 2. Corresponds to. Further, the adhesive resin portion 5 has a first dot-shaped adhesive resin 51 that comes into contact with an intersection where two multifilament threads intersect and a second dot-shaped adhesive resin 52 that does not come into contact with the intersection. included.

In the adhesive multi-axis non-woven fabric 1 of the present embodiment, for example, glass fiber yarn, carbon fiber yarn, aramid fiber yarn, and vinylon fiber yarn can be used as the first multifilament yarn 2. It has excellent mechanical strength and versatility, and in tile units including multi-axis non-woven fabric, it improves rigidity when handling tile units, improves heat resistance and dimensional stability when manufacturing tile units, and when constructing tile units. As the first multifilament yarn 2, glass fiber yarn is preferable because it contributes to the improvement of weather resistance.

Examples of the glass fiber thread that can be used as the first multifilament thread 2 include a thread having an E glass fiber composition, a thread having a high-strength glass fiber composition, and a thread having an alkali-resistant glass fiber composition. The E glass fiber composition comprises 52 to 56% by mass of SiO ₂ , ₅ to 10% by mass of B2O3, ₁₂ to 16% by mass of _{Al2O3 ,} and CaO and MgO with respect to the total amount of glass fiber. 20 to 25% by mass in total, and 0 to 1% by mass in total of Na ₂ O, K ₂ O and Li ₂ O. Further, in the high-strength glass fiber composition, SiO ₂ is 57 to 70% by mass, Al ₂ O ₃ is 18 to 30% by mass, CaO is 0 to 13% by mass, and MgO is 5 to 5 to the total amount of glass fiber. It contains 15% by mass, Na ₂ O, K ₂ O and Li ₂ O in total of 0 to 1% by mass, TiO ₂ in 0 to 1% by mass, and B ₂ O ₃ in 0 to 2% by mass. Further, the alkali-resistant glass fiber composition is 54 to 65% by mass of SiO ₂ , 0 to 2% by mass of Al ₂ O ₃ and a total of CaO, MgO, SrO, BaO and ZnO with respect to the total amount of glass fibers. 0 to 10% by mass, Na ₂ O by 10 to 17% by mass, K ₂ O by 0 to 8% by mass, Li ₂ O by 0 to 5% by mass, TiO ₂ by 0 to 7% by mass, ZrO by 12 to 25 by mass. Contains% by mass. As the first multifilament yarn 2, a yarn having an E glass fiber composition is preferable because of its excellent versatility.

In the adhesive multiaxial nonwoven fabric 1 of the present embodiment, the first multifilament yarn 2 may be a yarn composed of a plurality of the same type or different types of multifilament yarns. When the first multifilament yarn 2 is composed of a plurality of multifilament yarns, the form may be a combined yarn or a combined twisted yarn.

In the adhesive multiaxial nonwoven fabric 1 of the present embodiment, the filament diameter of the filament constituting the first multifilament yarn 2 is, for example, 3 to 30 μm, preferably 4 to 24 μm, and more preferably. It is 5 to 18 μm.

In the adhesive multiaxial nonwoven fabric 1 of the present embodiment, the number of filaments focused in the first multifilament yarn 2 is, for example, 50 to 6000, preferably 100 to 5000, and more preferably. The number is 200 to 4000, 400 to 2000, and more preferably 500 to 1200.

In the adhesive multiaxial nonwoven fabric 1 of the present embodiment, the weight of the first multifilament yarn 2 is, for example, 1 to 10000 tex (g / 1000 m), preferably 3 to 5800 tex, and more preferably. It is 10 to 2500 tex, more preferably 30 to 1000 tex, particularly preferably 50 to 800 tex, and most preferably 100 to 500 tex.

In the adhesive multiaxial nonwoven fabric 1 of the present embodiment, the number of twists of the first multifilament yarn 2 is, for example, 0 to 500 T / m, preferably 0 to 300 T / m, and more preferably 0 to 300 T / m. , 0 to 200 T / m, more preferably 0 to 150 T / m, particularly preferably 0 to 100 T / m, and most preferably 0 to 50 T / m. When the first multifilament yarn 2 is a combined twist yarn, the number of twists of the first multifilament yarn 2 means the number of twists given at the time of combined twisting.

In the adhesive multiaxial nonwoven fabric 1 of the present embodiment, the yarn width of the first multifilament yarn 2 is, for example, 1.0 to 4.0 mm, preferably 1.5 to 3.5 mm. , More preferably 1.8 to 3.2 mm.

In the adhesive multiaxial nonwoven fabric 1 of the present embodiment, the plurality of first multifilament threads 2 are arranged in parallel at, for example, 2.0 to 25.0 threads / 25 mm, preferably 2.2 to 10. It is paralleled at 0 lines / 25 mm, and more preferably 2.5 to 6.0 lines / 25 mm.

In the adhesive multiaxial nonwoven fabric 1 of the present embodiment, the thread spacing of the adjacent first multifilament threads 2 is, for example, 1.0 to 20.0 mm, preferably 2.0 to 15.0 mm. It is more preferably 3.0 to 8.0 mm.

In the adhesive multiaxial nonwoven fabric 1 of the present embodiment, the first oblique multifilament yarn 3 can use a multifilament yarn having the same characteristics as the first multifilament yarn 2. The first oblique multifilament thread 3 may be the same thread as the first multifilament thread 2, or may be a different thread.

In the adhesive multiaxial nonwoven fabric 1 of the present embodiment, the first oblique multifilament yarn 3 is obliquely intersected with the first multifilament yarn 2, and the first oblique multifilament yarn is formed. The angle formed by the strip 3 and the first multifilament yarn 2 is, for example, 40 to 70 °, preferably 43 to 65 °.

In the adhesive multiaxial nonwoven fabric 1 of the present embodiment, the plurality of first oblique multifilament threads 3 are arranged in parallel at, for example, 1.4 to 14.0 threads / 25 mm, preferably 2.1 to 14.0. It is paralleled at 10.5 lines / 25 mm, more preferably 2.8 to 7.0 lines / 25 mm.

In the adhesive multiaxial nonwoven fabric 1 of the present embodiment, the thread spacing of the adjacent first oblique multifilament threads 3 is, for example, 1.5 to 20.0 mm, preferably 2.0 to 15. It is 0.0 mm, more preferably 3.0 to 9.5 mm.

In the adhesive multiaxial nonwoven fabric 1 of the present embodiment, the second oblique multifilament yarn 4 can use a multifilament yarn having the same characteristics as the first multifilament yarn 2. The second oblique multifilament thread 4 may be the same thread as the first multifilament thread 2 or may be a different thread.

In the adhesive multiaxial nonwoven fabric 1 of the present embodiment, the second oblique multifilament yarn 4 is oblique to the first multifilament yarn 2 from the direction opposite to the first oblique multifilament yarn 3. The angle formed by the second oblique multifilament yarn 4 and the first multifilament yarn 2 is, for example, 40 to 70 °, preferably 43 to 65 °. ..

In the adhesive multiaxial nonwoven fabric 1 of the present embodiment, the plurality of the second oblique multifilament threads 4 are arranged in parallel, for example, 1.4 to 14.0 threads / 25 mm, preferably 2. It is paralleled at 1 to 10.5 lines / 25 mm, and more preferably 2.8 to 7.0 lines / 25 mm.

In the adhesive multiaxial nonwoven fabric 1 of the present embodiment, the thread spacing of the second oblique multifilament threads 4 adjacent to each other is, for example, 1.5 to 20.0 mm, preferably 2.0 to 15. It is 0.0 mm, more preferably 3.0 to 9.5 mm.

In the adhesive multiaxial nonwoven fabric 1 of the present embodiment, the orthogonal multifilament yarn 6 can use a multifilament yarn having the same characteristics as the first multifilament yarn 2. The orthogonal multifilament thread 6 may be the same thread as the first multifilament thread 2, or may be a different thread.

In the adhesive multiaxial nonwoven fabric 1 of the present embodiment, the orthogonal multifilament threads 6 are arranged in parallel at, for example, 2.0 to 25.0 threads / 25 mm, preferably 2.2 to 10.0 threads / 25 mm. It is parallel, more preferably 2.5 to 6.0 lines / 25 mm.

In the adhesive multiaxial nonwoven fabric 1 of the present embodiment, the thread spacing of the adjacent orthogonal multifilament threads 6 is, for example, 1.5 to 20.0 mm, preferably 2.0 to 15.0 mm. , More preferably 3.0 to 9.5 mm.

In the adhesive multiaxial nonwoven fabric 1 of the present embodiment, the first multifilament yarn 2 and the crossed multifilament yarn (that is, the first oblique multifilament yarn 3 and the second oblique multifilament mulch). The filament threads 4 and the orthogonal multifilament threads 6) are fixed by the intersection fixing resin at least at these intersections. Further, the first multifilament thread 2, the crossed multifilament thread (that is, the first oblique multifilament thread 3, the second oblique multifilament thread 4, and the orthogonal multifilament). The thread 6) may be covered with the intersection fixing resin.

In the adhesive multi-axis non-woven fabric 1 of the present embodiment, the intersection fixing resin includes thermosetting resins such as thermosetting acrylic resin, vinyl acetate resin and polyurethane, and polyamide, polyester, ethylene vinyl acetate, polyurethane and polyethylene. , Polyurethane, Polyvinyl Chloride and other thermoplastic resins can be exemplified.

In the adhesive multiaxial nonwoven fabric 1 of the present embodiment, the average thread thickness T of the multiaxial nonwoven fabric is in the range of 50 to 500 μm. When the average thread thickness T is less than 50 μm, the adhesive multiaxial nonwoven fabric 1 of the present embodiment does not have sufficient mechanical strength and rigidity. On the other hand, if the average thread thickness T is more than 600 μm, the workability when the tile unit including the adhesive multiaxial nonwoven fabric 1 of the present embodiment is adhered to the wall surface may be deteriorated.

In the adhesive multiaxial nonwoven fabric 1 of the present embodiment, the average thread thickness T of the multiaxial nonwoven fabric is preferably in the range of 50 to 350 μm, and more preferably in the range of 70 to 300 μm.

For example, in the adhesive triaxial nonwoven fabric 1 of the present embodiment shown in FIG. 1, the average thread thickness T of the multiaxial nonwoven fabric can be calculated by the following method. First, regarding the three or more first multifilament threads 2, the threads do not intersect with the other threads in each thread, and the first and second dot-shaped adhesive resins 51 and 52 are not attached. The average thickness of the first multifilament yarn 2 is calculated by measuring the thicknesses of the three yarns using a micrometer and taking the average thereof. Next, for three or more first oblique multifilament threads 3, the thicknesses of the three threads that do not intersect with the other threads in each thread are measured using a micrometer. By taking the average, the average thickness of the first oblique multifilament yarn 3 is calculated. Next, for three or more second oblique multifilament threads 4, the thicknesses of the three threads that do not intersect with the other threads in each thread are measured using a micrometer. By taking the average, the average thickness of the second oblique multifilament yarn 4 is calculated. Next, the average thickness of the first multifilament thread 2, the average thickness of the first oblique multifilament thread 3, and the average thickness of the second oblique multifilament thread 4 are taken. Therefore, the average thread thickness T of the adhesive triaxial nonwoven fabric 1 of the present embodiment is calculated.

In the adhesive multiaxial nonwoven fabric 1 of the present embodiment, the adhesive resin portion 5 is provided in a dot shape on at least one surface of the multiaxial nonwoven fabric. More specifically, the adhesive resin portion 5 is on the first multifilament yarn 2 constituting the multiaxial nonwoven fabric, or the crossed multifilament yarn (that is, the first oblique multifilament yarn). 3. It is composed of a plurality of first and second dot-shaped adhesive resins 51 and 52 adhered on the second oblique multifilament yarn 4 and the orthogonal multifilament yarn 6).

In the adhesive multi-axis nonwoven fabric 1 of the present embodiment, the adhesive resin portion 5 is usually either a front surface or a back surface when the front surface and the back surface are set on one side of the multi-axis nonwoven fabric, that is, the multi-axis nonwoven fabric. Although it is provided on the surface, it may be provided on both surfaces of the multiaxial nonwoven fabric, that is, the front surface and the back surface.

The first and second dot-shaped adhesive resins 51 and 52 may be a single-layer adhesive resin having adhesiveness to the multiaxial nonwoven fabric and tiles, or may be adhesive to the multiaxial nonwoven fabric and have adhesiveness to the multiaxial nonwoven fabric. It may be composed of two layers of a lower layer adhesive resin adhering to the multifilament filaments constituting the above and an upper layer adhesive resin having adhesiveness to the tile and adhering to the surface of the lower layer adhesive resin. From the viewpoint of productivity of the adhesive multi-axis non-woven fabric, the first and second dot-shaped adhesive resins 51 and 52 are preferably single-layer adhesive resins. On the other hand, from the viewpoint of quality stability, it is preferable that the first and second dot-shaped adhesive resins 51 and 52 are composed of a lower layer adhesive resin and an upper layer adhesive resin.

The single-layer adhesive resin or the upper-layer adhesive resin is a thermoplastic resin or a mixture of a thermoplastic resin and a thermosetting resin, preferably a thermoplastic resin, and more preferably a melting point of 70 to 150 ° C. It is a thermoplastic resin, more preferably a thermoplastic resin having a melting point of 75 to 105 ° C., and most preferably a thermoplastic resin having a melting point of 80 to 95 ° C. The melting point of the thermoplastic resin can be measured according to JIS K 7121: 2012.

Examples of the single-layer adhesive resin or the upper-layer adhesive resin include polyamide, polyurethane, polyester, polypropylene, polyethylene, and modified ethylene-vinyl acetate copolymer resin.

Examples of the lower layer adhesive resin include polyurethane, acrylic resin, polyamide, polyester, polyethylene, ethylene vinyl acetate copolymer resin and the like.

In the adhesive multiaxial nonwoven fabric 1 of the present embodiment, the average dot diameter D of the adhesive resin portion 5 is in the range of 100 to 1500 μm. If the average dot diameter D is less than 100 μm, the adhesive multiaxial nonwoven fabric 1 of the present embodiment does not have sufficient adhesiveness. On the other hand, when the average dot diameter exceeds 1500 μm, the adhesive multi-screw nonwoven fabric 1 of the present embodiment loses flexibility and is difficult to handle.

In the adhesive multiaxial nonwoven fabric 1 of the present embodiment, the average dot diameter D of the adhesive resin portion 5 is preferably in the range of 100 to 750 μm, and more preferably in the range of 150 to 550 μm.

The average dot diameter D of the adhesive resin portion 5 can be calculated by the following method. First, the adhesive multiaxial nonwoven fabric 1 of the present embodiment is cut into a size of 100 mm × 150 mm using a cutting scissors. Next, the cut adhesive multi-axis nonwoven fabric 1 is placed on a frame of a microscope (manufactured by KEYENCE CORPORATION, model name: VHX-600), and the adhesive resin portion 5 is provided at a magnification of 100 times using the microscope. Observe the surface. Next, the diameters of each of the 50 or more first and second dot-shaped adhesive resins 51 and 52 are measured using the calculation software built in the microscope. Next, the average dot diameter D is calculated by obtaining the average value of the measured diameters. When the first and second dot-shaped adhesive resins 51 and 52 are composed of the lower layer adhesive resin and the upper layer adhesive resin, the dot diameter of the lower layer adhesive resin is measured and the average dot diameter D is calculated. do.

In the adhesive multiaxial nonwoven fabric 1 of the present embodiment, the average dot height H of the adhesive resin portion 5 is in the range of 5 to 600 μm. If the average dot height H is less than 5 μm, the adhesive multiaxial nonwoven fabric 1 of the present embodiment does not have sufficient adhesiveness. On the other hand, when the average dot height exceeds 600 μm, strike-through of the adhesive resin is likely to occur in the adhesive multiaxial nonwoven fabric 1 of the present embodiment.

In the adhesive multiaxial nonwoven fabric 1 of the present embodiment, the average dot height H of the adhesive resin portion 5 is preferably in the range of 50 to 550 μm, more preferably in the range of 50 to 350 μm, and more preferably 70 to 70. It is more preferably in the range of 230 μm.

The average dot height H of the adhesive resin portion 5 can be calculated by the following method. First, the adhesive multiaxial nonwoven fabric 1 of the present embodiment is cut along any one of the first multifilament threads 2 using cutting scissors. Then, along the other first multifilament thread 2 located at a position 20 to 30 mm away from the one first multifilament thread 2, the present embodiment is used with cutting scissors. The adhesive multiaxial non-woven fabric 1 of the above is cut. Next, the adhesive multiaxial nonwoven fabric 1 of the present embodiment having a width of 20 to 30 mm is cut to a length of 50 mm using a cutting scissors to obtain a measurement sample. Next, the measurement sample is placed on a frame of a microscope (manufactured by KEYENCE CORPORATION, model name: VHX-600), and the cut surface is observed at a magnification of 100 times using the microscope. Next, the heights of any 10 or more first and second dot-shaped adhesive resins 51 and 52 that did not have apex defects due to cutting were measured using the calculation software built into the microscope. , The average dot height of the thread is calculated by taking the average. Then, in the case of another crossed multifilament yarn (for example, when the adhesive multiaxial nonwoven fabric 1 of the present embodiment is the adhesive triaxial nonwoven fabric 1 shown in FIG. 1, the first oblique multifilament yarn 3 is used. And, for the second oblique multifilament yarn 4), the average dot height of the yarn is calculated in the same manner as in the first multifilament yarn 2. Next, the average dot height H is calculated by taking the average of the average dot heights of each thread. When the first and second dot-shaped adhesive resins 51 and 52 are composed of the lower layer adhesive resin and the upper layer adhesive resin, the total height of the lower layer adhesive resin and the upper layer adhesive resin is measured. , Calculate the average dot height.

In the adhesive multiaxial nonwoven fabric 1 of the present embodiment, the intersection contact rate C of the adhesive resin portion 5 calculated by the above method is in the range of 3.0 to 90.0%. If the intersection contact rate C is less than 3.0%, the adhesive multiaxial nonwoven fabric 1 of the present embodiment does not have sufficient adhesiveness. On the other hand, when the intersection contact rate exceeds 90.0%, strike-through of the adhesive resin is likely to occur in the adhesive multiaxial nonwoven fabric 1 of the present embodiment.

In the adhesive multiaxial nonwoven fabric 1 of the present embodiment, the intersection contact ratio C of the adhesive resin portion 5 is preferably in the range of 5.0 to 55.0%, preferably in the range of 5.0 to 35.0 μm. It is more preferably present, and even more preferably in the range of 6.0 to 27.0%.

In the above-mentioned method for calculating the intersection contact rate, when the first and second dot-shaped adhesive resins 51 and 52 are composed of the lower layer adhesive resin and the upper layer adhesive resin, the lower layer adhesive resin is multiaxial. A material that makes even a slight contact with the intersection of two or more multifilament threads constituting the nonwoven fabric is regarded as the first dot-shaped adhesive resin 51 that contacts the intersection of two or more multifilament threads.

In the adhesive multiaxial nonwoven fabric 1 of the present embodiment, the mass per unit area of the adhesive resin portion 5, that is, the total mass of the plurality of first and second dot-shaped adhesive resins 51 and 52 per unit area is For example, it is in the range of 2 to 40 g / m ² , preferably in the range of 3 to 30 g / m ² , more preferably in the range of 5 to 20 g / m ² , and even more preferably in the range of 7 to 15 g. It is in the range of / m ² .

In the adhesive multiaxial nonwoven fabric 1 of the present embodiment, the number of the plurality of first and second dot-shaped adhesive resins 51 and 52 is, for example, in the range of 3 to 100 / 25.4 mm, preferably. It is in the range of 12 to 50 pieces / 25.4 mm. When the first and second dot-shaped adhesive resins 51 and 52 are composed of the lower layer adhesive resin and the upper layer adhesive resin, the number of the first and second dot-shaped adhesive resins 51 and 52 is , Means the number of lower layer adhesive resins. Here, a plurality of upper layer adhesive resins may be provided on one lower layer adhesive resin.

The adhesive multiaxial nonwoven fabric 1 of the present embodiment is, for example, around a predetermined rotation axis on one surface of the multiaxial nonwoven fabric that can be manufactured by appropriately changing the design of the manufacturing apparatus described in Japanese Patent Application Laid-Open No. 2005-163220. It can be manufactured by adhering the single-layer adhesive resin in a dot shape using a cylindrical screen that rotates in a dot shape.

Here, a plurality of through holes for passing the single-layer adhesive resin are formed on the peripheral surface of the screen according to the number of dots. A squeegee for supplying the single-layer adhesive resin is provided in the screen. The single-layer adhesive resin supplied from the squeegee is extruded through the through hole of the screen and adheres to one surface of the multiaxial nonwoven fabric. The single-layer adhesive resin is transferred to the multi-screw nonwoven fabric that is sandwiched between the screen and the back roll and conveyed.

Further, after the lower layer adhesive resin is adhered to the multiaxial nonwoven fabric by the same method as the single layer adhesive resin, the upper layer adhesive resin powder is sprayed on one surface of the multiaxial nonwoven fabric to which the lower layer adhesive resin is transferred. The adhesive multiaxial nonwoven fabric 1 of the present embodiment can also be manufactured by adhering the upper layer adhesive resin on the surface of the lower layer adhesive resin portion.

In the adhesive multiaxial nonwoven fabric 1 of the present embodiment, the average thread thickness T of the multiaxial nonwoven fabric is in the range of 50 to 500 μm, and the average dot diameter D of the adhesive resin portion is in the range of 100 to 1500 μm. The average dot height H of the adhesive resin portion is in the range of 5 to 600 μm, the intersection contact rate C of the adhesive resin portion is in the range of 3.0 to 90.0%, and the T is. , D, H and C satisfy the following formula (1).
0.65 ≤ (D ^1/2 x H ^1/2 x (C / 100)) / T ^1/2 ≤ 30.30
... (1)

When the T, D, H and C satisfy the above formula (1), the adhesive multiaxial nonwoven fabric 1 of the present embodiment has excellent adhesiveness and prevents strike-through of the adhesive resin.

Here, the lower the value of T, the better the adhesiveness, but the more likely it is that the resin will strike through. The higher the value of D, the better the adhesiveness, but the more likely it is that the resin will strike through. The higher the value of H, the better the adhesiveness, but the more likely it is that the resin will strike through. The higher the value of C, the better the adhesiveness, but the more likely it is that the resin will strike through. The formula (1) expresses the equilibrium between the adhesiveness and the prevention of strike-through by using T, D, H and C having such a tendency.

In the adhesive multiaxial nonwoven fabric 1 of the present embodiment, the T is in the range of 50 to 500 μm, the D is in the range of 100 to 1500 μm, the H is in the range of 50 to 550 μm, and the C is. However, it is preferable that the content is in the range of 5.0 to 55.0% and the T, D, H and C satisfy the following formula (2).
0.80 ≤ (D ^1/2 x H ^1/2 x (C / 100)) / T ^1/2 ≤ 21.90
... (2)

The T is in the range of 50 to 500 μm, the D is in the range of 100 to 1500 μm, the H is in the range of 50 to 550 μm, and the C is in the range of 5.0 to 55.0%. And when the T, D, H and C satisfy the above formula (2), the adhesive multiaxial nonwoven fabric 1 of the present embodiment has excellent adhesiveness and strike-through of the adhesive resin. It is more reliably prevented.

In the adhesive multiaxial nonwoven fabric 1 of the present embodiment, the T is in the range of 50 to 350 μm, the D is in the range of 100 to 750 μm, the H is in the range of 50 to 350 μm, and the C is. However, it is preferable that the content is in the range of 5.0 to 35.0%, and the T, D, H and C satisfy the following formula (3).
0.80 ≤ (D ^1/2 x H ^1/2 x (C / 100)) / T ^1/2 ≤ 10.70
... (3)

The T is in the range of 50 to 350 μm, the D is in the range of 100 to 750 μm, the H is in the range of 50 to 350 μm, and the C is in the range of 5.0 to 35.0%. And when the T, D, H and C satisfy the above formula (3), the adhesive multiaxial nonwoven fabric 1 of the present embodiment has excellent adhesiveness and strike-through of the adhesive resin. It can be more reliably prevented and more stable in quality can be manufactured.

The weight per unit area of the adhesive multiaxial nonwoven fabric 1 of the present embodiment is, for example, 50 to 250 g / m ² , preferably 60 to 200 g / m ² , and more preferably 70 to 150 g / m. It is ² .

The thickness of the adhesive multiaxial nonwoven fabric 1 of the present embodiment is, for example, 100 to 700 μm, preferably 200 to 550 μm, and more preferably 300 to 450 μm.

The ratio of the total mass of the intersection fixing resin and the adhesive resin portion to the mass of the adhesive multiaxial nonwoven fabric 1 of the present embodiment is, for example, 1 to 40% by mass, preferably 3 to 30% by mass, and more. It is preferably 5 to 20% by mass. The ratio of the total mass of the intersection fixing resin and the adhesive resin portion to the mass of the multiaxial nonwoven fabric 1 of the present embodiment is JIS R 3420 when the multifilament yarn constituting the adhesive multiaxial nonwoven fabric 1 is an inorganic fiber yarn. : It can be measured as a strong heat loss according to 2013.

The adhesive multi-axis non-woven fabric 1 of the present embodiment can be suitably used for a tile unit, but other than that, it is also suitable for a reinforcing material for a non-woven fabric, a reinforcing material for a film, a reinforcing material for aluminum foil, and the like. Can be used.

The tile unit of the present embodiment includes the adhesive multi-axis nonwoven fabric 1 of the present embodiment and a plurality of tiles. The plurality of tiles are fixed on the multi-axis nonwoven fabric 1 of the present embodiment by the adhesive resin portion 5 of the adhesive multi-axis nonwoven fabric 1 of the present embodiment.

The plurality of tiles used in the tile unit of the present embodiment are not particularly limited, and tiles for building exterior walls and tiles for building interiors can be used. The number of tiles is, for example, 5 to 100.

Hereinafter, the present invention will be described in more detail with reference to examples. However, the present invention is not limited to these examples.

[Example 1]
In the above method, the first multifilament thread 2, the first oblique multifilament thread 3, and the second oblique multifilament thread 4 are all glass fiber threads, and the intersection fixing resin is used. 30 pieces / 25.4 mm through holes were randomly arranged on one surface of a multiaxial non-woven fabric (triaxial non-woven fabric) which is a thermosetting acrylic resin and has a mass of 87 g / m ² per unit area. Using a screen, a polyamide resin having a melting point of 90 ° C. is adhered in dots so that the mass per unit area is 12.2 g / m ² , and the adhesive multiaxial nonwoven fabric 1 (adhesiveness) of Example 1 is attached. Triaxial non-woven fabric) was obtained. With respect to the adhesive multiaxial nonwoven fabric 1 of Example 1, the average thread thickness T of the multiaxial nonwoven fabric, the average dot diameter D of the adhesive resin portion, the average dot height H of the adhesive resin portion, and adhesion are performed by the above-mentioned method. The intersection contact rate C of the resin portion was calculated, and the value of (D ^1/2 × H ^1/2 × (C / 100)) / T ^1/2 was calculated. The results are shown in Table 1.

[Example 2]
In the above method, the first multifilament yarn 2 and the orthogonal multifilament yarn 6 are both glass fiber yarns, the intersection fixing resin is polyamide, and the mass per unit area is 85 g / m ² . Using a screen in which 15 pieces / 25.4 mm through holes are randomly arranged on one surface of a certain multi-axis non-woven fabric (biaxial non-woven fabric), a polyamide resin having a melting point of 90 ° C. is added to the mass per unit area. The adhesive multiaxial non-woven fabric 1 (adhesive biaxial non-woven fabric) of Example 2 was obtained by adhering them in a dot shape so as to have a value of 10.0 g / m ² . With respect to the adhesive multiaxial nonwoven fabric 1 of Example 2, the average thread thickness T of the multiaxial nonwoven fabric, the average dot diameter D of the adhesive resin portion, the average dot height H of the adhesive resin portion, and adhesion are performed by the above-mentioned method. The intersection contact rate C of the resin portion was calculated, and the value of (D ^1/2 × H ^1/2 × (C / 100)) / T ^1/2 was calculated. The results are shown in Table 1.

[Example 3]
In the above method, the first multifilament thread 2, the first oblique multifilament thread 3, the second oblique multifilament thread 4, and the orthogonal multifilament thread 6 are all glass fiber threads. 40 pieces / 25.4 mm through holes are randomly formed on one surface of a multi-screw non-woven fabric (four-screw non-woven fabric) in which the intersection fixing resin is polyamide and the mass per unit area is 183 g / m ² . Using the arranged screen, a polyamide resin having a melting point of 90 ° C. was attached in a dot shape so that the mass per unit area was 12.2 g / m ² , and the adhesive multiaxial nonwoven fabric 1 of Example 3 was attached. (Adhesive tetraaxial non-woven fabric) was obtained. With respect to the adhesive multiaxial nonwoven fabric 1 of Example 3, the average thread thickness T of the multiaxial nonwoven fabric, the average dot diameter D of the adhesive resin portion, the average dot height H of the adhesive resin portion, and adhesion are performed by the above-mentioned method. The intersection contact rate C of the resin portion was calculated, and the value of (D ^1/2 × H ^1/2 × (C / 100)) / T ^1/2 was calculated. The results are shown in Table 1.

[Example 4]
In the above method, the first multifilament thread 2, the first oblique multifilament thread 3, and the second oblique multifilament thread 4 are all glass fiber threads, and the intersection fixing resin is used. 40 pieces / 25.4 mm through holes are arranged in a 60 ° staggered pattern on one surface of a multi-axis non-woven fabric (triaxial non-woven fabric) which is a thermosetting acrylic resin and has a mass of 100 g / m ² per unit area. Using the screen, a polyamide resin having a melting point of 90 ° C. was attached in dots so that the mass per unit area was 28.0 g / m ² , and the adhesive multiaxial nonwoven fabric 1 of Example 4 ( Adhesive triaxial non-woven fabric) was obtained. With respect to the adhesive multiaxial nonwoven fabric 1 of Example 4, the average thread thickness T of the multiaxial nonwoven fabric, the average dot diameter D of the adhesive resin portion, the average dot height H of the adhesive resin portion, and adhesion are performed by the above-mentioned method. The intersection contact rate C of the resin portion was calculated, and the value of (D ^1/2 × H ^1/2 × (C / 100)) / T ^1/2 was calculated. The results are shown in Table 1.

[Example 5]
In the above method, the first multifilament thread 2, the first oblique multifilament thread 3, the second oblique multifilament thread 4, and the orthogonal multifilament thread 6 are all glass fiber threads. 40 pieces / 25.4 mm through holes are arranged in parallel on one surface of a multi-axis non-woven fabric (four-axis non-woven fabric) in which the intersection fixing resin is polyamide and the mass per unit area is 183 g / m ² . Using the arranged screen, a polyamide resin having a melting point of 90 ° C. was attached in a dot shape so that the mass per unit area was 30.0 g / m ² , and the adhesive multiaxial nonwoven fabric 1 of Example 5 was attached. (Adhesive tetraaxial non-woven fabric) was obtained. With respect to the adhesive multiaxial nonwoven fabric 1 of Example 5, the average thread thickness T of the multiaxial nonwoven fabric, the average dot diameter D of the adhesive resin portion, the average dot height H of the adhesive resin portion, and the adhesion are performed by the above-mentioned method. The intersection contact rate C of the resin portion was calculated, and the value of (D ^1/2 × H ^1/2 × (C / 100)) / T ^1/2 was calculated. The results are shown in Table 1.

[Example 6]
In the above method, the first multifilament thread 2, the first oblique multifilament thread 3, and the second oblique multifilament thread 4 are all glass fiber threads, and the intersection fixing resin is used. 15 pieces / 25.4 mm through holes were randomly arranged on one surface of a multiaxial non-woven fabric (triaxial non-woven fabric) which is a thermosetting acrylic resin and has a mass of 100 g / m ² per unit area. Using a screen, a polyamide resin having a melting point of 90 ° C. is adhered in dots so that the mass per unit area is 13.0 g / m ² , and the adhesive multiaxial nonwoven fabric 1 (adhesiveness) of Example 6 is attached. Triaxial non-woven fabric) was obtained. With respect to the adhesive multiaxial nonwoven fabric 1 of Example 6, the average thread thickness T of the multiaxial nonwoven fabric, the average dot diameter D of the adhesive resin portion, the average dot height H of the adhesive resin portion, and adhesion are performed by the above-mentioned method. The intersection contact rate C of the resin portion was calculated, and the value of (D ^1/2 × H ^1/2 × (C / 100)) / T ^1/2 was calculated. The results are shown in Table 1.

[Comparative Example 1]
In the above method, the first multifilament thread 2, the first oblique multifilament thread 3, and the second oblique multifilament thread 4 are all glass fiber threads, and the intersection fixing resin is used. 40 pieces / 25.4 mm through holes were randomly arranged on one surface of a multi-screw non-woven fabric (triaxial non-woven fabric) which is a thermosetting acrylic resin and has a mass of 87 g / m ² per unit area. Using a screen, a polyamide resin having a melting point of 90 ° C. is attached in dots so that the mass per unit area is 6.0 g / m ² , and the adhesive multiaxial nonwoven fabric 1 (adhesiveness) of Comparative Example 1 is attached. Triaxial non-woven fabric) was obtained. Regarding the adhesive multi-axis nonwoven fabric 1 of Comparative Example 1, the average thread thickness T of the multi-axis nonwoven fabric, the average dot diameter D of the adhesive resin portion, the average dot height H of the adhesive resin portion, and the adhesion are performed by the above-mentioned method. The intersection contact rate C of the resin portion was calculated, and the value of (D ^1/2 × H ^1/2 × (C / 100)) / T ^1/2 was calculated. The results are shown in Table 2.

[Comparative Example 2]
In the above method, the first multifilament thread 2, the first oblique multifilament thread 3, and the second oblique multifilament thread 4 are all glass fiber threads, and the intersection fixing resin is used. Twenty pieces / 25.4 mm through holes were randomly arranged on one surface of a multi-screw non-woven fabric (triaxial non-woven fabric) which is a thermosetting acrylic resin and has a mass of 87 g / m ² per unit area. Using a screen, a polyamide resin having a melting point of 90 ° C. is attached in dots so that the mass per unit area is 15.0 g / m ² , and the adhesive multiaxial nonwoven fabric 1 (adhesiveness) of Comparative Example 2 is attached. Triaxial non-woven fabric) was obtained. Regarding the adhesive multiaxial nonwoven fabric 1 of Comparative Example 2, the average thread thickness T of the multiaxial nonwoven fabric, the average dot diameter D of the adhesive resin portion, the average dot height H of the adhesive resin portion, and the adhesion are performed by the above-mentioned method. The intersection contact rate C of the resin portion was calculated, and the value of (D ^1/2 × H ^1/2 × (C / 100)) / T ^1/2 was calculated. The results are shown in Table 2.

[Comparative Example 3]
In the above method, the first multifilament thread 2, the first oblique multifilament thread 3, and the second oblique multifilament thread 4 are all glass fiber threads, and the intersection fixing resin is used. 65 pieces / 25.4 mm through holes are arranged in a 60 ° staggered pattern on one surface of a multi-axis non-woven fabric (triaxial non-woven fabric) which is a thermosetting acrylic resin and has a mass of 87 g / m ² per unit area. Using the screen, a polyamide resin having a melting point of 90 ° C. was attached in dots so that the mass per unit area was 25.0 g / m ² , and the adhesive multiaxial nonwoven fabric 1 of Comparative Example 3 ( Adhesive triaxial non-woven fabric) was obtained. With respect to the adhesive multiaxial nonwoven fabric 1 of Comparative Example 3, the average thread thickness T of the multiaxial nonwoven fabric, the average dot diameter D of the adhesive resin portion, the average dot height H of the adhesive resin portion, and the adhesion by the above-mentioned method. The intersection contact rate C of the resin portion was calculated, and the value of (D ^1/2 × H ^1/2 × (C / 100)) / T ^1/2 was calculated. The results are shown in Table 2.

[Comparative Example 4]
In the above method, the first multifilament thread 2, the first oblique multifilament thread 3, the second oblique multifilament thread 4, and the orthogonal multifilament thread 6 are all glass fiber threads. 65 pieces / 25.4 mm through holes are arranged in parallel on one surface of a multi-axis non-woven fabric (four-axis non-woven fabric) in which the intersection fixing resin is polyamide and the mass per unit area is 183 g / m ² . Using the arranged screen, a polyamide resin having a melting point of 90 ° C. was attached in a dot shape so that the mass per unit area was 15.0 g / m ² , and the adhesive multiaxial nonwoven fabric 1 of Comparative Example 4 was attached. (Adhesive tetraaxial non-woven fabric) was obtained. With respect to the adhesive multiaxial nonwoven fabric 1 of Comparative Example 4, the average thread thickness T of the multiaxial nonwoven fabric, the average dot diameter D of the adhesive resin portion, the average dot height H of the adhesive resin portion, and the adhesion were carried out by the above-mentioned method. The intersection contact rate C of the resin portion was calculated, and the value of (D ^1/2 × H ^1/2 × (C / 100)) / T ^1/2 was calculated. The results are shown in Table 2.

[Reference Example 1]
Using a screen in which 40 pieces / 25.4 mm through holes are arranged in parallel on one surface of a glass fiber woven fabric having a mass of 50 g / m ² per unit area, using glass fiber threads as warp and weft. Then, the polyamide resin having a melting point of 90 ° C. was adhered in a dot shape so that the mass per unit area was 12.0 g / m ² , and the adhesive woven fabric of Reference Example 1 was obtained. In the adhesive woven fabric of Reference Example 1, the average thread thickness of the woven fabric was calculated as follows. First, for three or more warps, the thickness of the three warps that do not intersect with the warp and do not have adhesive resin attached is measured using a micrometer, and the average is taken to obtain the warp of the warp. Calculate the average thickness. Next, for three or more wefts, the average thickness of the wefts is calculated by measuring the three wefts that do not intersect with the warp using a micrometer and taking the average. Next, the average thread thickness T of the woven fabric is calculated by taking the average of the average thickness of the warp and the average thickness of the weft. Further, the average dot diameter D of the adhesive resin portion of the adhesive textile portion, the average dot height H of the adhesive resin portion, and the intersection contact rate C of the adhesive resin portion are calculated by the same method as that of the adhesive multiaxial nonwoven fabric 1. Then, the value of (D ^1/2 × H ^1/2 × (C / 100)) / T ^1/2 was calculated. The results are shown in Table 2.

[Evaluation of adhesiveness]
Cotton / polyester broad cloth (Nitto Boseki Co., Ltd.) on the surface provided with the adhesive multiaxial non-woven fabric 1 of Examples 1 to 6 and Comparative Examples 1 to 4 and the adhesive resin portion 5 of the adhesive fabric of Reference Example 1. (Manufactured by, product number: T68), and pressed using a press machine (manufactured by Asahi Textile Machinery Co., Ltd., model name: JR-900S) at 130 ° C., 3.0 kgf / cm ² , for 10 seconds. , A laminate was obtained. Then, the obtained laminate. It was cut to a width of 25.4 mm to obtain a test sample. With respect to the obtained test sample, the adhesive strength when T-type peeling was performed at a peeling speed of 100 mm / min was measured using a universal testing machine (manufactured by Shimadzu Corporation, model name: AG-I). "A" when the measured adhesive force is 300 cN / 25.4 mm or more, "B" when it is 50 cN / 25.4 mm or more and less than 300 cN / 25.4 mm, and "B" when it is less than 50 cN / 25.4 mm. It was evaluated as "C". The results are shown in Tables 1 and 2.

[Evaluation of resin strike-through prevention]
A cotton knit fabric (manufactured by Iida Textile Co., Ltd., product number: TX-10590) is laminated on both sides of the adhesive multiaxial nonwoven fabric 1 of Examples 1 to 6 and Comparative Examples 1 to 4 and the adhesive fabric of Reference Example 1. Then, a laminate was obtained by pressing with a press machine (manufactured by Kobe Electric Industrial Co., Ltd., model name: BP-V4812D) under the conditions of 150 ° C., 0.3 kgf / cm ² , and 30 seconds. Then, the obtained laminate. It was cut to a width of 25.4 mm to obtain a test sample. The obtained test sample is provided with an adhesive resin portion 5 when T-type peeling is performed at a peeling speed of 100 mm / min using a universal testing machine (manufactured by Shimadzu Corporation, model name: AG-I). The adhesive strength of the unexposed surface was measured. "A" when the measured adhesive force is 30 cN / 25.4 mm or less, "B" when it is over 30 cN / 25.4 mm and 50 cN / 25.4 mm or less, and "B" when it is over 50 cN / 25.4 mm. It was evaluated as "C". The results are shown in Tables 1 and 2. The high adhesive strength of the surface on which the adhesive resin portion 5 is not provided suggests that there is a strike-through adhesive resin in the adhesive multiaxial nonwoven fabric 1.

[Evaluation of quality stability]
After completely cleaning the guide roll located immediately after the screen, when the adhesive multi-axis nonwoven fabric 1 of Examples 1 to 6 is manufactured for 100 m, "A" is given when the guide roll is not dirty, and "A" is found when the guide roll is dirty. It was evaluated as "B". When the adhesive multi-screw nonwoven fabric 1 is manufactured with the guide rolls dirty, the stains adhere to the back surface of the adhesive multi-screw nonwoven fabric 1, resulting in poor appearance and adhesiveness. When the tile unit containing the multi-axis non-woven fabric 1 is adhered to the wall surface, the adhesiveness may decrease.

As shown in Tables 1 and 2, the average thread thickness T of the multiaxial nonwoven fabric is in the range of 50 to 500 μm, and the average dot diameter D of the adhesive resin portion is in the range of 100 to 1500 μm, and the adhesive is bonded. The average dot height H of the resin portion is in the range of 5 to 600 μm, the intersection contact rate C of the adhesive resin portion is in the range of 3.0 to 90.0%, and the T, D, H and C are The adhesive multiaxial nonwoven fabric 1 of Examples 1 to 6 satisfying the following formula (1) has excellent adhesiveness and prevents strike-through of the adhesive resin.
0.65 ≤ (D ^1/2 x H ^1/2 x (C / 100)) / T ^1/2 ≤ 30.30
... (1)

On the other hand, the adhesive multiaxial nonwoven fabric 1 of Comparative Examples 1 to 4 which does not satisfy the above formula (1) does not have sufficient adhesiveness or cannot sufficiently prevent strike-through of the adhesive resin.

Further, as shown in the adhesive woven fabric of Reference Example 1, when the woven fabric is provided with the dot-shaped adhesive resin portion 5 instead of the multiaxial non-woven fabric, the woven fabric is adhered even if the above formula (1) is not satisfied. The woven fabric has excellent adhesiveness and prevents strike-through of the adhesive resin.

[Example 7]
Eight tiles having a surface temperature of 90 ° C. were placed on the adhesive multiaxial nonwoven fabric 1 of Example 1 and pressure-bonded at 0.5 MPa. Even when the adhesive multi-axis non-woven fabric 1 to which the tiles were crimped was lifted vertically, all eight tiles were stably fixed.

[Example 8]
Eight tiles having a surface temperature of 100 ° C. were placed on the adhesive multiaxial nonwoven fabric 1 of Example 6 and pressure-bonded at 0.5 MPa. Even when the adhesive multi-axis non-woven fabric 1 to which the tiles were crimped was lifted vertically, all eight tiles were stably fixed. On the other hand, when eight tiles having a surface temperature of 90 ° C. are arranged and crimped at 0.5 MPa, when the pressure-bonded adhesive multi-axis nonwoven fabric 1 of the tiles is lifted vertically, some of the tiles are released. It peeled off.

[Comparative Example 5]
Eight tiles having a surface temperature of 100 ° C. were placed on the adhesive multiaxial nonwoven fabric 1 of Comparative Example 1 and pressure-bonded at 0.5 MPa. When the adhesive multi-axis non-woven fabric 1 crimped on the tile was lifted vertically, some of the tiles were peeled off.

As shown in Examples 7 and 8 and Comparative Example 5, the adhesive multiaxial nonwoven fabric 1 of this embodiment can be suitably used as a base material of a tile unit. As shown in Example 7, the adhesive multiaxial nonwoven fabric 1 of the present embodiment having the adhesive evaluation of "A" can adhere tiles at a lower temperature, and is particularly used as a base material of a tile unit. It can be suitably used.

1 ... Multiaxial non-woven fabric, 2 ... 1st multifilament thread, 3 ... 1st oblique multifilament thread, 4 ... 2nd oblique multifilament thread, 5 ... Adhesive resin part, 51 ... 1st Dot-shaped adhesive resin, 52 ... Second dot-shaped adhesive resin, 6 ... Orthogonal multifilament yarn.

Claims (8)

With multi-axis non-woven fabric,
An adhesive nonwoven fabric comprising an adhesive resin portion provided in a dot shape on at least one surface of the nonwoven fabric.
The multi-axis nonwoven fabric has a plurality of first multifilament threads arranged in parallel and
Includes a plurality of intersecting multifilament threads that intersect the first multifilament thread.
The plurality of first multifilament threads and the plurality of crossed multifilament threads are fixed by an intersection fixing resin at least at their intersections.
The average thread thickness T of the multiaxial nonwoven fabric is in the range of 50 to 500 μm.
The average dot diameter D of the adhesive resin portion is in the range of 100 to 1500 μm.
The average dot height H of the adhesive resin portion is in the range of 5 to 600 μm.
The intersection contact rate C of the adhesive resin portion is in the range of 3.0 to 90.0%.
An adhesive multiaxial nonwoven fabric, wherein the T, D, H and C satisfy the following formula (1).
0.65 ≤ (D ^1/2 x H ^1/2 x (C / 100)) / T ^1/2 ≤ 30.30
... (1) In the adhesive multiaxial nonwoven fabric according to claim 1, the T is in the range of 50 to 500 μm.
The D is in the range of 100 to 1500 μm.
The H is in the range of 50 to 550 μm.
The C is in the range of 5.0 to 55.0%.
An adhesive multiaxial nonwoven fabric, wherein the T, D, H and C satisfy the following formula (2).
0.80 ≤ (D ^1/2 x H ^1/2 x (C / 100)) / T ^1/2 ≤ 21.90
... (2) In the adhesive multiaxial nonwoven fabric according to claim 1, the T is in the range of 50 to 350 μm.
The D is in the range of 100 to 750 μm.
The H is in the range of 50 to 350 μm.
The C is in the range of 5.0 to 35.0%.
An adhesive multiaxial nonwoven fabric, wherein the T, D, H and C satisfy the following formula (3).
0.80 ≤ (D ^1/2 x H ^1/2 x (C / 100)) / T ^1/2 ≤ 10.70
... (3) The non-woven fabric according to any one of claims 1 to 3, wherein the multifilament yarn is a glass fiber yarn. The adhesive multiaxial nonwoven fabric according to any one of claims 1 to 4.
A plurality of first oblique multifilament yarns in which the plurality of crossed multifilament yarns obliquely intersect with the first multifilament yarns.
Adhesive multi-axis comprising a plurality of second oblique multifilament yarns obliquely intersecting the first multifilament yarn from the direction opposite to the first oblique multifilament yarn. Non-woven fabric. In the adhesive multiaxial nonwoven fabric according to any one of claims 1 to 4, the plurality of crossed multifilament threads are formed from a plurality of orthogonal multifilament threads orthogonal to the first multifilament thread. Adhesive multi-axis non-woven fabric characterized by becoming. The adhesive multiaxial nonwoven fabric according to any one of claims 1 to 4.
A plurality of orthogonal multifilament threads in which the plurality of intersecting multifilament threads are orthogonal to the first multifilament thread,
A plurality of first oblique multifilament yarns obliquely intersecting with the first multifilament yarn, and
Adhesive multi-axis comprising a plurality of second oblique multifilament yarns obliquely intersecting the first multifilament yarn from the direction opposite to the first oblique multifilament yarn. Non-woven fabric. A tile unit comprising the adhesive multiaxial nonwoven fabric according to any one of claims 1 to 7 and a plurality of tiles.

Images