JP2555708B2 - Material having nap structure and method for producing the same - Google Patents

Description

TECHNICAL FIELD The present invention relates to a method for producing a napped material having a large number of fine fiber naps on the surface of the material.

[Prior Art] Conventionally, napped fabrics are excellent in aesthetic appearance, glossiness, and deep-coloring property. Therefore, not only in the field of clothing but also in the field of decoration such as wall coverings, furniture and vehicles. Widely used for various materials such as upholstery materials.

In addition, in recent years, by utilizing the surface slimy property and surface swaying property uniquely brought by fine fiber napped groups such as several denier or less, it is also applied as a marine material excellent in biofouling prevention property, that is, an adhesion prevention material for algae, shellfish, etc. Is being done.

Furthermore, it has been found that such a peculiar phenomenon that the resistance becomes smaller at the interface between the fine napped fiber and the liquid or gas is exhibited, and the material or the drag that brings about the stable running effect of the object in the liquid and the gas. It is also being used as a material that brings about a reduction effect.

These are all considered to be due to phenomena peculiar to the napped group of fine fibers such as several denier or less, that is, fluctuation due to choke mark effect, air vibration effect described later, air mark effect, etc. .

Such an air mark effect and an air vibration effect can be said to be hardly noticeable even when tested with a commercially available napped fabric, that is, velvet, velvet, velveteen, etc., and it is particularly used in the present invention. It is found in ultrafine raised woolen fabrics of 1 denier or less, natural chinchilla fur, and natural nutria fur.

However, in order to obtain a napped structural material having ultrafine naps on the surface which is excellent in such an air mark effect and an air vibration effect, the ultrafine napped fabric is directly attached to the material base using an adhesive or the like. Since the roots of the napped hair are firmly adhered and fixed because the resin, resin, etc. permeates to the inside of the cloth and passes through the back (because it penetrates from the back of the cloth to the napped side of the front side), the ultrafine fibers are naturally used for napped hair Since the peculiar phenomenon of the important point, that is, the swaying effect and the fluctuation effect, the air mark effect and the air vibration effect described above disappears or is reduced, the algae-preventing function, the shell-repelling function, and the drag-reducing function as described above are eliminated. There is an inconvenience that it will not be obtained. Also,
For decorative items such as upholstered fabric, surface effect and softness,
There is an inconvenience that the high-class feeling is lost.

Further, in order to prevent the adhesive or the resin from seeping into the napped cloth, for example, a method of adhering it to the material substrate using a double-sided adhesive tape is conceivable. However, such a method naturally causes the adhesive strength and the durability to increase. There is a problem and it is not preferable.

[Problems to be Solved by the Invention] In view of the problems of the prior art as described above, an object of the present invention is to provide excellent surface characteristics such as air marks and air vibration effects, which are the greatest features of ultrafine standing blankets. To obtain a material having a raised fiber structure, more specifically, to make good use of an ultrafine fiber raised fabric, to obtain a large number of ultrafine fiber raised fibers without actually impairing the air mark, the air vibration effect and the like. It is intended to provide a method for constructing a napped material having a strong surface.

[Means for Solving the Problems] The present invention has the following configuration to achieve the above object.

That is, a napped cloth (A) having a large number of ultrafine fiber naps having a weaving degree of 1 denier or less on the surface, and a base part comprising a ground yarn layer and a backing layer containing low melting point fibers (C), and a film sheet. (B) and the low melting point fiber (C) contained in the backing layer of the napped fabric are heat-bonded to form a laminate, and the film sheet (B) side of the laminate is the material substrate (D). ), And a method for producing the material having a napped structure.

[Operation] The present invention will be described in more detail.

The napped cloth (A) in the present invention is a pile cloth having a large number of ultrafine fiber naps on one surface, and its cloth structure is not particularly limited, but for example, velveteen, napped yarn, Warp yarns that form the base of the fabric,
A napped woven fabric made of weft is a typical one. On the other hand, a ground vertical double napped knit is a typical woven fabric. Further, as the method for forming the napped cloth, various forming methods can be adopted, and for example, various methods such as a single pile, a double pile, a double velvet, and a chinchilla weave can be used.

In the method for producing a material having a napped structure according to the present invention, in the napped cloth (A) as described above, the back surface side of the cloth, that is, the non-napped surface, that is, the base portion is formed with the ground yarn layer and the low melting point fiber (C). The backing layer is exposed from the backing layer on the back side of the napped fabric, and the backing layer is exposed on the back side of the napped fabric. On the back side, the film sheet (B)
Are laminated and heated and pressed to form a laminate of the fabric (A) and the sheet (B) by melt heat bonding of the low melting point fiber (C), and the film sheet (B) side of the laminate is a material substrate (D). )
No.2 for manufacturing materials with napped structure
There is a feature of.

The low melting point fiber (C) is 40 ° C higher than the melting point of the napped fiber.
It is preferable to use fibers having a low melting point as described above, and as the low melting point fibers, the following types of fibers are preferably used. That is, copolymers made of polyamide-based polymers such as nylon-12, 6, 66, 610, copolymers made of polyester-based polymers such as polybutylene terephthalate (PBT), isophthalic acid, polytetramethylene glycol (PTMG), and Copolymers of polyester-based and polyamide-based polymers such as PBT and nylon-12 are generally usable, but are not limited thereto. When the melting point of the low melting point fiber (C) is lower than the melting point of the napped fiber by 40 ° C. or less, the melt thermal adhesiveness is generally small, and the napped fiber is melted when the thermocompression bonding temperature is raised to increase the adhesive strength. Or, as a result, the roots of the naps are fixed and the whole naps tend to harden, which is not preferable.

The napped fabric (A) that can be used in the present invention will be described with reference to the drawings, taking a pile woven fabric as an example. A typical configuration of a conventional pile woven fabric is shown, for example, in the organization diagrams of FIGS. 3 and 4. As described above, the pile systems P ₁ and P ₂ that form the napped surface of the fabric, and the ground warp yarns 1 and 2 that form the base portion,
3, 4 and the ground weft a that forms the texture points with the pile system
It is a general woven fabric that has been conventionally known that a vertical double-pile woven fabric is woven according to the above-mentioned method, and the pile yarn is cut by the knife 5 in the middle of the double woven fabric. Since the adhesive or resin used for attaching the napped cloth to the film sheet or the material substrate penetrates to the napped portion or passes through the back, the surface characteristics of the ultrafine napped cloth are impaired.

On the other hand, in the pile woven fabric according to the present invention, as shown in the woven structure diagrams of FIGS. 1 and 2, the pile yarn is structured as the ground warp yarn and / or the ground weft yarn, and the back surface of the woven fabric is The pile yarn is attached to the film sheet by providing the yarns (lining yarns) G ₁ and G ₂ that cover the direct exposure of the pile yarns, and by including this low-melting fiber. In, it is not necessary to use an adhesive or a resin, and since it becomes possible to attach by a thermocompression bonding treatment at a temperature higher than the melting point of the low melting point fiber,
It is possible to apply the extra fine napped fabric without impairing the surface characteristics thereof. The above-mentioned backing yarn forms a backing layer on the surface layer of the fabric surface. Further, by forming the napped fabric as a backing structure in this way, the following accompanying effects can be obtained at the same time.

That is, the occurrence of fuzz fleeting, which was caused in large quantities during the processing after forming the napped fabric, particularly by the rubbing action in a dyeing machine or the like, or during wearing, can be substantially completely prevented. The napped cloth used in the method for producing a napped material is often a long pile product having a nap length of 4 mm or more, but conventionally, in such a long pile woven fabric, back fluff generation and hair removal are originally Although remarkable, they can be suppressed almost satisfactorily according to the present invention.

The nap length of the napped fabric (A) varies depending on the single fiber weaving degree of the nap, but the range of 0.5 mm to 45 mm is preferable, and the most preferable range is 1 mm to 20 mm. If it exceeds 45 mm, it becomes difficult to form a pile woven or knitted fabric, but if fluff is also formed by a flocking method such as electrostatic flocking or tufting, the fibers will collapse and it will be difficult to fluff. Furthermore, the naps and the naps are easily entangled with each other, and it is difficult to obtain the smoothness of the surface required in the present invention, which is not preferable. For naps less than 0.5 mm, it is difficult to form naps with either woven or knitting or electrostatic flocking, and even when ultrafine fibers are used for the naps, the naps tend to rise and the naps tend to stand up It is not preferable because it has a rough feeling and it is difficult to obtain a smooth surface.

As the fiber-forming polymer constituting the napped fibers, polyethylene terephthalate or a copolymer thereof (for example, a copolymerization component such as 5-sodium sulfoisophthalic acid) polybutylene terephthalate, or a polyester such as a copolymer thereof, Nylon 6, 11, 12,
Polyamides represented by 66, 610, etc. and their copolymers, acrylic polymers, polyurethane, polyethylene, ultra high molecular weight polyethylene, polypropylene and their copolymers, polyvinyl alcohol, rayon, etc. Polymers may be applied, and a polymer may be appropriately selected from these depending on the specific application.

In the present invention, in order to favorably obtain the air mark effect, the air vibration effect, and the fluffing of the naps caused by these effects, the anti-algae property due to the fluctuation phenomenon, the anti-shell property, and the effect of reducing the drag force of the liquid / gas interface, etc. It is important to use a monofilament having a single fiber fineness of 1 denier or less. If the single fiber fineness exceeds 1 denier, the effect of the present invention cannot be sufficiently obtained, which is not preferable. A single fiber fineness of 0.5 denier or less is preferably used, and an ultrafine fiber having a single fiber fineness of 0.1 denier or less is particularly preferably used. As a method for producing ultrafine fibers having a single fiber fineness of 1 denier or less, for example, a method of obtaining ultrafine fibers from ultrafine fiber-generating composite fibers is preferable. More specifically, while using fibers such as peelable and splittable conjugate fibers, peeling by a suitable chemical or physical method adapted to the fibers, a method of obtaining split ultrafine fibers to obtain ultrafine fibers, Alternatively, various methods such as a method of obtaining an ultrafine fiber by performing an ultrafine treatment by removing one component of the conjugate fiber, a method of using an elution-type conjugate fiber, etc. are preferably used as appropriate.

When the napped fabric is attached to the intended material substrate, the napped fabric is directly attached to the material substrate, so that thermocompression bonding from the material substrate side is substantially impossible. Therefore, it is necessary to perform thermocompression bonding treatment from the napped surface of the napped fabric, but with such a treatment method, the pile is inevitably worn out, or depending on the type of material substrate, thermocompression bonding treatment is impossible. There is also. Therefore, there is no choice but to adopt a method of using an adhesive or a resin. However,
When an adhesive or a resin is used, it may be sufficient to penetrate into the napped cloth depending on the type. Therefore, in order to prevent this adhesive or resin from penetrating into the napped cloth, The film sheet (B) layer is provided on the raised surface side.

The film sheet (B) laminated with the napped cloth,
It is a film made of polyester, aromatic sulfide (PPS), polypropylene, polyethylene, polyamide, vinyl chloride, polystyrene, etc., or a copolymer thereof, and these biaxially stretched films are preferable in terms of strength and durability. The thickness is preferably in the range of 10 to 100 μm, and when it is less than 10 μm, the problem that the elongation of the laminate becomes large occurs, and conversely the thickness is 100 μm.
If it exceeds m, the laminate tends to be hard and the handling tends to be poor.

Furthermore, the use of a hot-melt type film sheet (B) obtained by laminating a low melting point adhesive layer on a film is preferable in order to further enhance the adhesive effect by thermocompression bonding. In that case, the adhesive is , Specifically, copolyester type, polyester ether type,
Acrylic acid-based, methacrylic acid-based, urethane-based, epoxy-based, polyamide-based, and glycidyl methacrylate copolymer-based materials can be used.

Next, the following (1) and (2) will be described with respect to a typical example of a method of laminating thermo-compression bonding of a napped cloth (A) and a film sheet (B).
However, the present invention is not limited to these. That is, (1) a biaxially stretched nylon film (B) is overlaid on the non-napped surface of a napped fabric (A) using a low melting point fiber (C) made of a nylon copolymer as a backing layer, and a heating roll and non-heating are used. A method of thermocompression-bonding a pair of rolls composed of rolls so that the film side is in contact with the heating roll part to obtain a laminate. (2) Melt extrusion lamination of a low melting point copolyester on one side of a polyester biaxially stretched film Then, a hot-melt type film sheet (B) provided with an adhesive layer having a low melting point is obtained. On this adhesive layer surface, a non-napped surface of a napped cloth (A) using a low melting point fiber (C) made of a polyester copolymer as a backing layer is overlaid, treated by the same method as the above (1), and napped cloth And a film sheet.

As a method of adhering the film sheet and the napped cloth, the method of heat-bonding the low-melting-point fibers used in the backing layer of the napped cloth by heat fusion under pressure is the most workable and adhesive. It is also preferable because it is excellent, and this can be carried out by, for example, a calendar device, an iron press device, etc., but is not limited to these methods.

The method for adhering the laminate obtained from the napped cloth and the film thus obtained to the above-described material substrate is a general adhesive, for example, polyester-based, epoxy-based, acrylic-based, polyamide-based, silane. It is advisable to apply various kinds of treating agents such as type, rubber type, urea type and melamine type, resin coating agents and the like to the film (B) side and / or the material substrate side and adhere them. In consideration of workability, it is common to appropriately apply these adhesives to the surface of the material substrate and bond the laminate.

However, what should be noted here is to select an adhesive that does not cause the film to dissolve due to the solvent contained in the adhesive. If you choose the adhesive wrongly,
Since the film tears or dissolves, the adhesive penetrates into the base of the napped fabric and affects the desired nap fluttering of the present invention, the weaving phenomenon, the air mark and the air vibration effect described above. Will affect
As a result, the effect of the present invention is lost.

In the present invention, the material substrate to which the laminated body of the napped fabric and the film sheet is attached refers to the following. In other words, (1) wall surfaces and bases of chairs in the field of industrial equipment construction, (2) fishery materials such as buoys and signs in the field of marine products, equipment materials such as ships, hulls, and harbors, and sea. Interior and exterior surfaces of various water related equipment such as pipes, distribution channels, distribution grooves, etc., which are distributed in rivers, lakes and marshes, harbors, etc. (3) In the marine leisure equipment field, Outer wall surfaces such as water slides, boats / yachts, surf / windsurf boards, water skis / jet skis, etc. And many others.

EXAMPLES Next, the present invention will be described by way of examples, but the present invention is not particularly limited by these examples, but rather brings about the following application development.

The method of measuring the characteristic value and the method of evaluating the effect used in the description are as follows.

(1) Air mark effect: When air is blown onto the surface of the napped fabric attached to the material substrate and the air blowing port or the fabric is relatively moved, whether or not there is a trace of the air blown It was judged with the naked eye. Of course, you can erase it with your hand.

(2) Air vibration effect: When air is blown to one point toward the naps on the surface of the napped fabric attached to the material substrate, the naps spread in all directions,
At that time, the degree of the phenomenon in which the standing hair clearly sways like a vibration and flutters was visually judged.

(3) Adhesive strength: The end face of the laminate is immersed in an organic solvent such as ethyl acetate or chloroform to prepare a sample in which the interface between the film sheet and the cloth is peeled off. The sample is vacuum dried to completely remove the organic solvent, and a test piece for measuring the adhesive strength is prepared.

The adhesion between the cloth and the fill sheet is measured by the method specified in JIS K 6854-1977. The size of the test piece is 2.5 cm in width x 12 cm in length, the peeling speed is 20 cm / min, and the peeling is performed. The angle was 180 °.

Those that seemed to have no problem in strength were rated as O, those that seemed to have some problems were rated as Δ, and those that seemed to have problems at all were rated as X.

(4) Adhesion durability: Width 2.5 using a Scott type tester described in JIS L 1096
A test piece of cm x length 12 cm was rubbed 100 times, and this was used as a test piece for measuring the adhesive force, and the adhesive force of the rubbed portion of the test piece was measured. The adhesion durability of the test piece without rubbing was 80% or more, the adhesion durability was ○, 80 to 50% was Δ, and less than 50% was X.

(5) Judgment Judgment: An excellent method for attaching the ultrafine raised woolen fabric to the material substrate was evaluated as ◯, and a method having a problem was evaluated as x.

Example 1 Sea-island type composite fiber in which the island component is polyethylene terephthalate and the sea component is polystyrene (16 islands, island-to-sea ratio: 80: 2)
0) 75 denier, 18 filament yarn is used as pile yarn, 75 denier, 36 filament yarn is used as ground warp yarn, and 70 denier made of nylon copolymer,
A 10-filament low-melting point yarn (melting point 100 ± 5 ° C.) was used for the ground vertical lining yarn, and a napped fabric having a napped length of 6 mm was manufactured by the double velvet mechanism with the woven structure shown in FIGS. 1 and 2. . The fineness is 46 yarns / in for pilate and 92 for ground warp
Book / in, ground weft thread was 102 thread / in, vertical backing thread was 92 thread / in.

The fabric was treated with trichloroethylene to remove the sea component of the pile yarn, and an ultrafine fiber nap with a single yarn fineness of 0.2 denier was obtained.

The non-napped surface of the napped fabric thus obtained is overlaid on a separately prepared 25 μm-thick polyester film sheet, and 16
The calender roll device heated to 0 ° C. was fed so that the film sheet portion was in contact with the heated roll side, and subjected to thermocompression treatment at a pressure of ² Kg / cm ² to obtain a laminate.

Furthermore, commercially available water-soluble epoxy (“Denacol” EX313,
Apply Nagase Sangyo Co., Ltd. on a plastic plate (3.8g)
/ m ² ), and the film surface of the laminate was pressed onto it, dried and adhered to obtain a napped material.

The results of evaluation of the adhesive strength, the adhesive durability, and the air mark and air vibration characteristics of the napped material in the thus obtained laminate are as shown in Table 1. It can be seen that a napped structure material can be obtained in which surface effects such as softening and softness are not impaired, and the adhesive strength of the laminate, the adhesive durability, and the adhesive properties of the entire material are good.

Furthermore, the back surface of the napped cloth of the film sheet adhesive is also uniform without the occurrence of back fluff such as split ends,
It has been considered that such an effect also facilitates the close contact between the non-napped surface of the napped fabric and the film sheet, leading to an improvement in adhesive strength.

Example 2 As the napped fabric (A), the fabric obtained in Example 1 was prepared, and as the film sheet (B), a low melting point copolyester (melting point) was used as an adhesive on one side of the polyester biaxially stretched film. A hot-melt type film sheet (thickness: 38 μm) obtained by melt-extruding a blend of 80 wt% of polyethylene and 20 wt% of polyethylene was prepared.

Next, the non-napped surface of the napped fabric (A) is overlapped with the adhesive layer side surface of the film sheet (B), and the calender roll device heated to 160 ° C. is supplied so that the film surface side is in contact with the heating roll. Then, thermocompression bonding was performed to obtain a laminate.

Further, in the same manner as in Example 1, a commercially available water-soluble epoxy was used, and the film surface of the laminate was pressed onto a plastic flat plate, dried and adhered to obtain a napped material.

The results of evaluation of the adhesive strength, the adhesive durability, and the air mark and air vibration characteristics of the napped material in the thus obtained laminate are as shown in Table 1. According to the present invention, the surface peculiar to the ultrafine napped group is unique. It was confirmed that an excellent napped structure which does not impair the effect and has no problem in adhesive strength and adhesive durability can be obtained.

Comparative Example 1 A napped fabric having the same woven structure as in Example 1 except that the vertical lining structure was not used, and a film sheet were prepared.

Then, a synthetic rubber adhesive "Segment quick-drying G (manufactured by Cemedine Co., Ltd.) was applied to the back surface of the napped cloth to adhere the napped cloth and the film sheet, and was pressed and dried to obtain a laminate. The amount of the adhesive applied was 111 g / m ² .

Further, in the same manner as in Examples 1 and 2, using a commercially available water-soluble epoxy, the film surface of the laminate was pressed on a plastic flat plate, dried and bonded to obtain a napped material.

The results of evaluating the adhesive strength, adhesive durability, and air mark and air vibration characteristics of the napped material in the thus obtained laminate are as shown in Table 1. Both the adhesive strength and the adhesive durability of the laminate are somewhat problematic. When something happens,
Furthermore, the napped surface is rough due to the penetration of the adhesive into the fabric,
Further, the air vibration effect and the air mark effect peculiar to the ultrafine napped yarn were insufficient.

[Effects of the Invention] According to the method of the present invention as described above, a two-layer structure of a base portion of a napped fabric, a ground yarn layer and a backing layer is used, and a low melting point fiber is used for the backing layer, and non-napped By sticking the laminate on which the surface is laminated and thermo-compression bonded to the material substrate (1) There is no penetration of adhesive or resin or back-through, and the touch of naps, air vibration, air mark effect is not impaired, Moreover, the napped fabric can be firmly attached to the material substrate.

(2) Due to the lining structure, the occurrence of back fluff of the ultrafine napped yarn can be prevented, and a uniform cloth back surface is obtained. Along with this, the adhesiveness to the film and the material substrate is improved, so that a material having a strong napped structure can be obtained.

(3) By using the laminated body of the napped cloth and the film, the cloth can be attached to the material base with good workability without wrinkling or tarring.

(4) Taking advantage of the above effects, the napped material of the present invention is used as a building material for wall coverings, upholstery materials, materials for reducing the drag between objects and liquids, or preventing the adhesion of algae and shellfish. Whether it is fresh water, seawater, or brackish water, it can be used for pumping, draining, and distributing water, such as pipe lines and groove linings, ship hull surfaces, boats / yachts, surf boards / windsurf boards, etc. Surfaces, grooves, inner walls of pipes and pipes that deliver liquids, swimsuits, pedestal surfaces of excavation platforms for underwater gas and oil, pier surfaces, underwater cable surfaces, etc. It can be effectively applied.

[Brief description of drawings]

FIG. 1 and FIG. 2 show a typical raised fabric which can be used in the method for producing a material having a raised structure of the present invention.
It is a pipe weave organization chart explaining an example of an embodiment. FIG. 3 and FIG. 4 are pile weave structure diagrams for explaining a typical example of a conventional napped fabric in comparison with FIGS. 1 and 2. 1, 2, 3, 4: Ground warp thread 5: Knife a to l: Ground weft thread P ₁ , P ₂ : Vertical pile thread G ₁ , G ₂ : Ground vertical backing thread

Claims (7)

(57) [Claims] 1. A napped fabric (A) having a large number of ultrafine fiber naps having a fineness of 1 denier or less on the surface and a base portion comprising a ground yarn layer and a backing layer containing low melting point fibers (C). And the film sheet (B) are heat-bonded by the low melting point fibers (C) contained in the backing layer of the napped fabric to form a laminate, and the film sheet (B) side of the laminate is further attached. A method for producing a material having a napped structure, which is characterized in that it is attached to a material substrate (D). 2. The film sheet (B) has a thickness of 10 to 100 μm.
The method for producing a material having a napped structure according to claim 1, wherein the material has a napped structure. 3. A napped structure according to claim (1) or (2), wherein the napped fabric (A) has a napped length of 0.5 mm or more and 45 mm or less. Material manufacturing method. 4. The low melting point fiber (C) has a melting point of 40 ° C. or more lower than the melting point of the napped fiber, wherein (1), (2) or () A method for producing a material having a napped structure according to the item 3). 5. The film sheet (B) is a hot-melt type having an adhesive layer having a low melting point on the surface thereof, which is (1), (2) and (). A method for producing a material having a napped structure according to item 3) or (4). 6. A napped cloth (A) having a large number of ultrafine fiber naps having a fineness of 1 denier or less on the surface and a base part comprising a backing layer containing a ground yarn layer and a low melting point fiber (C). A laminate in which the film sheet (B) and the low melting point fiber (C) contained in the backing layer of the napped fabric are heat-bonded. 7. A material having a napped structure, characterized in that a material substrate (D) is attached to the film sheet (B) surface side of the laminate according to claim (6).