JP2009191385A - Wadding fiber, and method for producing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide wadding fibers hardly making the shape of a resin appear in a face side fabric without causing unevennesses on the surface of the face side fabric, having excellent appearance of the face side fabric, capable of maintaining a high-class feeing, and having excellent heat retaining properties even after lamination onto the face side fabric in relation to the wadding fibers used by lamination onto the face side fabric. <P>SOLUTION: The wadding fibers have a dense fiber layer in which constituent fibers having 0.5-3 dtex average fineness are bound, and a thermoplastic resin having a melting point of 150°C or less, irregularly sticks to one of the surfaces of the dense fiber layer. The wadding fibers have 2-30 mm thickness. Furthermore, a method for producing the wadding fibers includes a step of smoothing at least the one surface of a dense fiber web having an average fineness of constituent fibers of 0.5-3 dtex by heat-pressing, and forming a smooth surface, a step of coating the one of the surfaces with a dispersion of the thermoplastic resin having a melting point of 150°C or less by spraying, and a step of binding the constituent fibers of the dense fiber web. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a filling cotton used by being attached to a front fabric. In detail, for example, it is used for clothing that requires heat retention, such as winter sports wear or pants, general winter clothes, work clothes, etc., and particularly suitable for parts such as collars, sleeve belts, box pockets, plackets, etc. It relates to the filling cotton used.

  2. Description of the Related Art Conventionally, in clothing items that require heat retention, such as winter sports wear and winter clothes, an inner cotton pad that imparts heat retention has been used by bonding it to a front fabric. In particular, for the parts such as a collar, a sleeve belt, a box pocket, and a placket, a cotton pad is used by adhering it to the front fabric to facilitate the sewing work.

  As such a filling cotton, for example, a bulky nonwoven fabric in which a polyester fiber or the like is bonded with an acrylic binder has been used. Since such a nonwoven fabric is bulky and contains a large amount of air, it has excellent heat retention. However, in recent years, there has been a demand for materials that can handle not only high-quality materials but also thin outer fabrics for such clothing, and in particular, the beauty of the silhouette that can be seen from the exterior as well as excellent heat retention. There is also a need for excellent high quality clothing.

  For example, in Patent Document 1, a web layer in which the thickness when containing water is 30% or less of the original thickness and the thickness when containing water are the original thicknesses. In addition, there is described an interlining cotton having a dense layer on a surface formed by laminating a web layer that is 50% or more of the above and applying an aqueous adhesive. This insert cotton has a dense non-woven fabric layer formed on the surface of the insert cotton, so that it is excellent in abrasion, dry cleaning and washing properties, and also has no bulkiness when worn and is bulky. Because the dense layer does not escape the warm air that is held in the air, it has excellent heat retention. Moreover, since it has a dense layer on the surface, it has excellent strength and shape retention, so it is excellent in sewing workability. Further, it is described that there is an effect that the surface roughness does not occur even when laminated on a thin and soft surface fabric.

  However, this gazette does not describe a specific technique for laminating the outer fabric. Therefore, as a technique for laminating such a surface fabric, a low melting point thermoplastic resin powder is made into a paste on a base fabric constituting the adhesive core, which is generally used in an adhesive core, and a hole is formed. When the technology for printing in a dot shape using an open screen is applied to the above-mentioned dense layer, the phenomenon that the dot shape appears on the surface fabric occurs, resulting in irregularities on the surface of the surface fabric and poor appearance. There was a problem that the sense of quality was impaired. Further, when dry cleaning or washing is repeated, there is a problem that unevenness becomes more and more clear.

Japanese Patent Publication No. 4-9139 (Claims)

  The present invention relates to such a conventional technique with respect to the interlining cotton used by being bonded to the outer fabric, and even after being bonded to the outer fabric, the shape of the resin hardly appears on the outer fabric, and the surface of the outer fabric is uneven. There are provided a cotton pad and a method for producing the same, in which the appearance of the surface fabric is excellent and the high-quality feeling can be maintained, and the heat retaining property is also excellent.

  Means for solving the above-mentioned problem is that in the invention of claim 1, it has a dense fiber layer in which constituent fibers having an average fineness of 0.5 to 3 dtex are bonded, and one of the dense fiber layers It is a padded cotton characterized by irregularly adhering a thermoplastic resin having a melting point of 150 ° C. or less on the surface, and a thickness of 2 to 30 mm. In addition, it is possible to provide a center-filled cotton that does not easily show the shape of the resin, has no irregularities on the surface of the surface fabric, can maintain the appearance of the surface fabric, has a high-class feeling, and is excellent in heat retention. .

  In the invention of claim 2, a dense fiber layer composed of constituent fibers having an average fineness of 0.5 to 3 dtex, an average fineness of 0.6 to 8 dtex, and an average fineness of constituent fibers of the dense fiber layer A coarse fiber layer made of constituent fibers having a high average fineness, the constituent fibers of the coarse fiber layer are bonded, and a thermoplastic resin having a melting point of 150 ° C. or lower is not present on the surface of the dense fiber layer. It is a cotton padded cotton that adheres to the rules and has a thickness of 2 to 30 mm, and is composed of a dense fiber layer and a coarse fiber layer. After that, the resin shape hardly appears on the surface fabric, the surface of the surface fabric does not appear uneven, and the appearance of the surface fabric is excellent and can maintain a high-class feeling, and the coarse fiber layer is bulky. The advantage of more excellent heat retention, the dense fiber layer and coarse It may have to share a role in the 維層.

  In invention of Claim 3, the constituent fiber of the said dense fiber layer and / or the said coarse fiber layer is couple | bonded with the thermosetting resin, It is the insertion cotton of Claim 1 or 2 characterized by the above-mentioned. There is an advantage that it is particularly excellent in dry cleaning resistance and washing resistance.

  In the invention of claim 4, the surface of the dense fiber layer is a smooth surface by heat processing, and the thermoplastic resin adheres irregularly to the smooth surface. Since the surface of the dense fiber layer is a smooth surface by heat processing, there is an advantage that unevenness is not easily generated on the surface fabric. Moreover, since the density of the dense fiber layer is high on the surface and the adhesion amount of the thermoplastic resin is also large on the surface, there is an advantage that it can be reliably bonded to the surface fabric.

  The invention according to claim 5 is characterized in that the constituent fibers of the dense fiber layer and / or the coarse fiber layer include crimped fibers and / or heat-adhesive fibers in which crimps of latent crimpable fibers are expressed. The surface-filled cotton according to any one of claims 1 to 4, wherein due to the presence of latent crimpable fibers and / or heat-bondable fibers, the surface can be easily processed by thermal processing during the production process of the center-filled cotton of the present invention. There is an advantage that a smooth surface can be obtained. In addition, the presence of crimped fibers and / or heat-bonding fibers has an advantage of keeping the thickness of the filling cotton bulky. Moreover, there exists an advantage that fibers can be reliably fixed by presence of a heat bondable fiber.

  In the invention of claim 6, among the resin lumps made of thermoplastic resin attached to the surface of the dense fiber layer, the number of resin lumps whose size falls within the range of 30 to 500 μm is the total number of 70. The inside-filled cotton according to any one of claims 1 to 5, wherein the size of the resin mass is smaller than the resin mass obtained by printing in a dot shape, but too small Therefore, there is an advantage that it is excellent in adhesiveness with the surface fabric and is not likely to be uneven due to the resin lump, and can be securely bonded to the surface fabric.

  In invention of Claim 7, the said thermoplastic resin contains a polyamide-type resin and a polyester-type resin, It is the inside insertion cotton in any one of Claims 1-6, Adhesive strength with a surface fabric However, since a slightly inferior polyester-based resin is mixed, there is an advantage that it has a temporary adhesion function of peeling off from the outer fabric during dry cleaning.

  In the invention of claim 8, the thermosetting resin is obtained by applying an emulsion of a thermosetting resin by spraying and thermosetting by heat processing, and the thermoplastic resin is obtained by spraying a dispersion of a thermoplastic resin. The center-filled cotton according to any one of claims 3 to 7, which has been applied and heat-melted by heat processing, and is applied by spraying both a thermosetting resin and a thermoplastic resin. Since there exists, there exists an advantage that it is excellent in bulkiness. Further, since the thermoplastic resin is applied by spraying, there is an advantage that the thermoplastic resin is reliably and irregularly attached. Moreover, there exists an advantage that the magnitude | size of the resin lump is smaller than the resin lump obtained by printing in a dot shape by apply | coating by spray.

  The invention according to claim 9 is characterized in that the insert cotton is a temporary adhesive type insert cotton having a function of adhering to a surface material by melting of a thermoplastic resin at the time of sewing and then peeling from the surface material at the time of washing. Item 9. A filling cotton according to any one of Items 1 to 8.

  In the invention of claim 10, a step of smoothing at least one surface of the dense fiber web by forming a dense fiber web having an average fineness of the constituent fibers of 0.5 to 3 dtex by heat pressing; and A process comprising: applying a dispersion of a thermoplastic resin having a melting point of 150 ° C. or less to the one surface by spraying; and bonding the constituent fibers of the dense fiber web. It is a manufacturing method, and the centering cotton of this invention can be manufactured.

  In the invention of claim 11, the step of bonding the constituent fibers of the dense fiber web includes a step of spraying a thermosetting resin emulsion on the other surface of the dense fiber web by spraying, and the thermosetting by heat processing. It is a manufacturing method of the filling cotton according to claim 10, characterized in that it comprises a step of thermosetting a functional resin to bond the constituent fibers of the dense fiber web. Can be manufactured well.

  In the invention of claim 12, the dense fiber web having an average fineness of the constituent fibers of 0.5 to 3 dtex and the average fineness of the constituent fibers of 0.6 to 8 dtex and being greater than the average fineness of the dense fiber web A step of laminating a coarse fiber web having a high average fineness to form a laminated web; a step of smoothing the surface of the dense fiber web by heat pressing the laminated web to form a smooth surface; and A step of applying a dispersion of a thermoplastic resin having a melting point of 150 ° C. or less by spraying, a step of thermally melting the thermoplastic resin by heat processing and attaching it to the smooth surface, and a constituent fiber of the laminated web And a step of bonding, characterized in that it comprises a method for producing a pledget, and a pledget having a coarse-dense structure, which is a preferred form of the present invention, can be produced. There is.

  In a thirteenth aspect of the present invention, the step of bonding the constituent fibers of the laminated web includes a step of spraying an emulsion of a thermosetting resin on the coarse fiber web side, and a step of applying the thermosetting resin by heat processing. The method for producing the center-filled cotton according to claim 12, wherein the method comprises a step of thermosetting and bonding the constituent fibers of the laminated web. Inserted cotton can be produced efficiently.

  Even after being bonded to the surface fabric by the center-filled cotton of the present invention and its manufacturing method, the shape of the resin is difficult to appear on the surface fabric, the surface of the surface fabric is not uneven, and the appearance of the surface fabric is excellent and high-class feeling. In addition, it is possible to provide a cotton pad with excellent heat retention.

  Hereinafter, preferred embodiments of the filling cotton and the method for producing the same according to the present invention will be described in detail. In addition, description of the manufacturing method of the filling cotton of this invention is demonstrated in description of the filling cotton of this invention.

  The center-filled cotton according to the first invention has a dense fiber layer to which constituent fibers having an average fineness of 0.5 to 3 dtex are bonded, and a melting point of 150 ° C. on one surface of the dense fiber layer. The following thermoplastic resin is irregularly attached and has a thickness of 2 to 30 mm.

  The center-filled cotton according to the second invention has a dense fiber layer composed of constituent fibers having an average fineness of 0.5 to 3 dtex, an average fineness of 0.6 to 8 dtex, and the constituent fibers of the dense fiber layer. A coarse fiber layer composed of constituent fibers having an average fineness higher than the average fineness, the constituent fibers of the coarse fiber layer are bonded, and the surface of the dense fiber layer has a melting point of 150 ° C. or less. This is a cotton pad with a plastic resin adhering irregularly and a thickness of 2 to 30 mm.

  In the following description, matters common to the form of the centering cotton according to the first invention and the form of the centering cotton according to the second invention will be described as the form of the centering cotton of the present invention.

  The form of the interlining cotton of the present invention is preferably in the form of a non-woven fabric to which constituent fibers are bonded, and can be a non-woven fabric conventionally used as an interlining cotton. After forming a dense fiber web and / or a coarse fiber web (hereinafter sometimes simply referred to as a fiber web) by a dry method, it is formed by bonding with a binder made of a thermosetting resin or a thermoplastic resin. However, it is possible to use other fiber bonding methods such as a fiber bonding method or a water flow or needle entanglement method, which can be formed by appropriately combining these methods. Is possible. Among these, the method of applying and bonding the binder by spraying can bond the fiber web in a bulky state, and therefore, it is a preferable manufacturing method because it is possible to form a cotton pad with better heat retention. Moreover, by inserting the fiber web with a thermosetting resin, it is possible to form a filling cotton that is particularly excellent in dry cleaning resistance and washing resistance, which is a preferable manufacturing method.

  The fibers constituting the nonwoven fabric include synthetic fibers such as polyester, polyamide, polyolefin, and acrylic, and these can be applied in combination of one or more. Moreover, it can be set as the filling cotton which is excellent in rebound resilience and bulkiness retention property using the fiber which has a spiral wound.

  Moreover, it is preferable that the fiber which comprises the said nonwoven fabric contains the crimped fiber and / or thermoadhesive fiber in which the crimp of the latent crimpable fiber was expressed. The presence of the latently crimpable fiber and / or the heat-adhesive fiber has an advantage that the surface of the dense fiber layer can be easily made smooth by heat processing during the production process of the center-filled cotton of the present invention. In addition, the presence of the crimped fiber has an advantage of keeping the thickness of the filling cotton bulky. Moreover, there exists an advantage that fibers can be reliably fixed by presence of a heat bondable fiber. The crimped fibers in which the crimps of the latent crimpable fibers are expressed are preferably contained in an amount of 5 to 100% by mass, more preferably 10 to 100% by mass, based on the entire constituent fibers. It is more preferable that 30-100 mass% is contained. In addition, when the constituent fibers are bonded by a thermosetting resin, if the content of the heat-adhesive fiber exceeds 30% by mass, the texture of the interlining cotton may become too hard. Is preferably contained in an amount of 5 to 30% by mass, more preferably 5 to 20% by mass, and still more preferably 5 to 15% by mass. Further, when the constituent fibers are bonded only by the heat-adhesive fibers, the heat-adhesive fibers are preferably contained in an amount of 5 to 100% by mass, and contained in an amount of 5 to 70% by mass with respect to the entire constituent fibers. It is more preferable that 5-50 mass% is contained.

  In the center-filled cotton according to the second invention, the dense fiber layer contains 5 to 100% by mass of the crimped fibers in which the crimps of the latent crimpable fibers are expressed with respect to the entire constituent fibers of the dense fiber layer. It is preferably contained, more preferably 10 to 100% by mass, and even more preferably 30 to 100% by mass. The coarse fiber layer preferably contains 0 to 30% by mass of crimped fibers in which the crimps of the latent crimpable fibers are expressed with respect to the entire constituent fibers of the coarse fiber layer. More preferably, it is contained in an amount of 5% by mass, and more preferably 5-15% by mass. When the constituent fibers of the dense fiber layer and / or the coarse fiber layer are bonded by a thermosetting resin, the dense fiber layer has thermoadhesive fibers on the entire constituent fibers of the dense fiber layer. It is preferable that 5-30 mass% is contained with respect to it, it is more preferable that 5-20 mass% is contained, and it is still more preferable that 5-15 mass% is contained. Moreover, it is preferable that 0-10 mass% of heat bondable fibers are contained in the said coarse fiber layer with respect to the whole constituent fiber of a coarse fiber layer. In addition, when the constituent fibers of the dense fiber layer and the coarse fiber layer are bonded only by the heat-adhesive fiber, the heat-adhesive fiber constitutes the constituent fiber of the dense fiber layer or the coarse fiber layer. It is preferable that 5-100 mass% is contained with respect to the whole fiber, It is more preferable that 5-70 mass% is contained, It is still more preferable that 5-50 mass% is contained.

  The latent crimpable fiber is preferably a fiber that generates a large number of crimps, particularly coiled or spiral crimps, when heated. The latent crimpable fibers are those in which the number of crimps after expression increases to at least twice the number of crimps at room temperature before expression in the state where no external force is applied when the optimum crimp expression condition is selected. Desirably, for example, it is preferable that the number of crimps of 10 to 20 pieces / inch at room temperature increases to about 40 to 200 pieces / inch when heated for 15 minutes at 170 ° C. with no external force applied by the fiber alone.

  As such latent crimpable fibers, composite fibers in which two kinds of resins having different melting points are combined are used. As the composite fiber, for example, an eccentric core-sheath composite fiber or a side-by-side (bonding) type composite fiber is preferably used. As a combination of resins having different melting points, various synthetic resins such as polyester-low melting point polyester, polyamide-low melting point polyamide, polyester-low melting point polyamide, polyester-polypropylene, polypropylene-low melting point polypropylene, polypropylene-polyethylene were combined. Things are applicable. In particular, latent crimpable fibers made of polyester-low-melting polyester are preferable because they are excellent in heat resistance and stretchability after the occurrence of crimping.

  Further, the heat-adhesive fiber is not particularly limited as long as it has a low melting point component on at least the surface of the fiber, and (1) an embodiment consisting of only one fusion component, (2) one or more resins There are modes in which the components are coated with a fusion component (core-sheath type or sea-island type), or modes in which one or more resin components and a fusion component are arranged next to each other (side-by-side type, etc.). The fiber having a low melting point component is a resin in which the melting point of the resin component having the lowest melting point among the resin components constituting the thermal adhesive fiber is the lowest melting point among the resin components constituting the other fibers. The fiber is lower than the melting point of the component, and in this case, it is preferably 20 ° C. or more, more preferably 30 ° C. or more, and still more preferably 40 ° C. or more. The melting point in the present invention refers to a temperature giving an extreme value of a melting absorption curve obtained by heating from room temperature at a temperature rising temperature of 20 ° C./min using a differential calorimeter. Specifically, a combination of various synthetic resins such as polyester-low melting point polyester, polyamide-low melting point polyamide, polyester-low melting point polyamide, polyester-polypropylene, polypropylene-low melting point polypropylene, polypropylene-polyethylene is applicable. is there. In particular, a heat-bondable fiber made of polyester-low-melting polyester is preferable because it is excellent in heat resistance and durability.

  In the center-filled cotton of the present invention, the constitution of the constituent fibers is not particularly limited as long as the average fineness of the constituent fibers constituting the dense fiber layer is 0.5 to 3 dtex, for example, the average fineness is 0.5 to 3 dtex. A fiber layer having a multilayer structure in which a fiber layer A in the range of 5 and a fiber layer B having an average fineness outside the range of 0.5 to 3 dtex are laminated, and the fiber layer in which the fiber layer A and the fiber layer B are combined The present invention is also applicable when the average fineness of the entire constituent fibers is 0.5 to 3 dtex. In addition, as a preferable aspect, the average fineness of the constituent fibers constituting the dense fiber layer is 0.5 to 3 dtex, preferably 0.7 to 3 dtex, and 0.8 to 3 dtex. Preferably, it is 0.9 to 2.7 dtex. If it is less than 0.5 decitex, the fiber becomes too thin, and there is a problem that the constituent fibers in the central part are not sufficiently bonded by the thermosetting resin, and if it exceeds 3 decitex, the fiber becomes too thick and flexible. There is a problem that the heat retention effect is lowered.

  In addition, as a method of calculating the average fineness, the fineness of each fiber is a decitex, b decitex, c decitex, etc., and the content ratio of each fiber is a ′ mass%, b ′ mass%, c ′ mass% ·・ ・ Then, the relational expression of (a ′ / a) + (b ′ / b) + (c ′ / c)... = (100 / x) is established, and the average fineness x is obtained from this relational expression. Can do.

  In the center-filled cotton according to the second invention, the above-mentioned dense fiber layer and the constituent fibers having an average fineness of 0.6 to 8 dtex and higher than the average fineness of the constituent fibers of the dense fiber layer. And a coarse fiber layer. Thus, by being composed of a dense fiber layer and a coarse fiber layer, even after the dense fiber layer is bonded to the surface fabric, the shape of the resin hardly appears on the surface fabric, and the surface of the surface fabric is uneven. It does not occur, and has the advantage that the appearance of the face fabric is excellent and a high-class feeling can be maintained. In addition, the coarse fiber layer has the advantage that it is excellent in bulkiness and exhibits better heat retention, and since the role can be shared between the dense fiber layer and the coarse fiber layer, it has more functionality. It can be a rich cotton filling.

  The more preferable lower limit of the average fineness of the constituent fibers of the coarse fiber layer is preferably 1 dtex or more, more preferably 1 dtex or more, and even more preferably 1.5 dtex or more. . Further, a more preferable upper limit value is preferably 6 dtex or less, more preferably 4 dtex or less, and further preferably 3 dtex or less.

  Moreover, it is preferable that the ratio of the mass of the constituent fiber of the said dense fiber layer and the mass of the constituent fiber of the said coarse fiber layer is 10 / 90-60 / 40, and it is 15 / 85-50 / 50. More preferably, it is further preferably 20/80 to 40/60.

  In the center-filled cotton of the present invention, it is preferable that the surface of the dense fiber layer is a smooth surface by heat processing, and the thermoplastic resin adheres irregularly to the smooth surface. Such a smooth surface can be obtained, for example, by forming a fiber web containing latent crimpable fibers and / or heat-adhesive fibers in the constituent fibers and heat-pressing the fiber web. . The surface of the dense fiber layer is fluffy at the time when the dense fiber layer is formed, but the surface of the dense fiber layer is a smooth surface by heat processing, so that there is an advantage that unevenness is not easily generated on the surface fabric. is there. Further, since the density of the constituent fibers of the dense fiber layer is increased on the surface and the amount of the thermoplastic resin attached is also increased on the surface, there is an advantage that it can be reliably bonded to the surface fabric.

  As a method of the heat press, for example, there is a method achieved by heating a pair of smooth metal or resin rolls and passing the fiber web under pressure between the pair of rolls. . Further, there is a method in which the fiber web is sandwiched between two belt conveyors and smoothed while moving the belt conveyor under heating.

  In the center-filled cotton of the present invention, constituent fibers are bonded and a thermoplastic resin having a melting point of 150 ° C. or lower is irregularly adhered to at least one surface. More specifically, in the center-filled cotton according to the first invention, the constituent fibers of the dense fiber layer are bonded and a thermoplastic resin having a melting point of 150 ° C. or less adheres irregularly to at least one surface. ing. In addition, in the center-filled cotton according to the second invention, the constituent fibers of the coarse fiber layer or the constituent fibers of both the coarse fiber layer and the dense fiber layer are bonded and the surface of the dense fiber layer has a melting point of 150. Thermoplastic resin below ℃ adheres irregularly.

  The constituent fibers of the dense fiber layer and / or the coarse fiber layer are preferably bonded by a thermosetting resin. Examples of the thermosetting resin include acrylic, ethylene-vinyl acetate copolymer systems, and polyacetic acid. A vinyl type, a polyvinyl chloride type, a synthetic rubber type, a polyurethane type, or those obtained by adding a crosslinking agent to these are preferred. Among these, acrylic resins are particularly preferable because they are excellent in adhesiveness and water resistance with polyester fibers suitable as constituent fibers, can form a flexible resin film, and do not impair the texture.

  The thermosetting resin can be formed, for example, by applying an emulsion of a thermosetting resin to a fiber web by a spray method, an impregnation method, and the like, and then curing by heating. Among these application methods, the spray method is a preferable application method because it can form a bulky cotton with high bulkiness and excellent heat retention. The adhesion amount of the thermosetting resin is preferably 3 to 30% by mass, more preferably 4 to 20% by mass, and 5 to 15% by mass with respect to the entire filling cotton. Further preferred.

  The thermoplastic resin is not particularly limited as long as the melting point is 150 ° C. or lower, and a resin that melts by heating, such as polyester, polypropylene, and polyamide, is preferable. Among these, the polyamide-based resin is particularly preferable because it has excellent adhesion to, for example, taffeta, twill, satin, shantung, and high-density fabric as a surface material, and is excellent in washing resistance after bonding.

  In addition, when the insert cotton of the present invention is formed as a so-called temporary adhesive type insert cotton having a function of adhering to the outer surface by melting of a thermoplastic resin during sewing and then peeling from the outer surface at the time of washing, It is preferable that the plastic resin includes a polyamide-based resin and a polyester-based resin. In this case, since a polyester resin having a slightly inferior adhesive force with the outer fabric is mixed, there is an advantage that the temporary bonding function is surely provided. The mass ratio of the polyamide-based resin and the polyester-based resin is preferably 40 to 90/10 to 60, more preferably 50 to 80/20 to 50, and more preferably 60 to 90. More preferably, it is 80 / 20-40.

  The thermoplastic resin may be formed, for example, by applying a dispersion liquid in which a thermoplastic resin is dispersed in the form of fine particles to a fiber web by a spray method, an impregnation method, etc., and then melting and adhering to the constituent fibers by heating. it can. Among these application methods, the spray method is a preferable application method because it can be applied intensively to the surface of the interlining cotton and can be easily and irregularly attached. Here, the irregular is a state in which a large number of dot-like shapes having a predetermined size and positional relationship are repeatedly printed and adhered to the surface of the cotton pad, as in the case of printing using a screen. Unlike FIG. 1, as shown in FIG. 1, a state where the film is attached in such a manner that the film is stretched at a random size around the intersection of the fibers of the constituent fibers in the vicinity of the inner cotton pad surface, A state where the fiber is randomly attached to a random spot in a random size. The adhesion amount of the thermoplastic resin is preferably 1 to 15% by mass, more preferably 1.5 to 12% by mass, and more preferably 2 to 10% by mass with respect to the entire filling cotton. Is more preferable.

  In addition, in the centering cotton of the present invention, among the resin lump made of a thermoplastic resin attached to the surface of the centering cotton, the number of resin lumps whose resin lump size falls within the range of 30 to 500 μm is the whole. It is preferably 70% or more of the number, and when the size of the resin lump is in this range, the size of the resin lump is smaller than the resin lump obtained by printing in a dot shape, but is not too small. Since it is moderate, it has an advantage that it is excellent in adhesiveness with the surface fabric, and is less likely to be uneven due to the resin lump, and can be securely bonded to the surface fabric. In addition, it is more preferable that the number of resin lumps whose size falls within the range of 30 to 500 μm is 80% or more of the total number, and the size of the resin lumps whose size falls within the range of 30 to 500 μm More preferably, the number is 90% or more of the total number.

  The size of the resin mass is the line segment crossing the image of the film-like resin straddling two or more fibers in the image of 100 or more resin masses existing in an arbitrary section of the micrograph. The longest line segment is defined as the apparent major axis, the line segment perpendicular to the major axis at the midpoint of the apparent major axis is defined as the apparent minor axis, and then the apparent major axis length and apparent minor axis length It shall be expressed by the average of the length. If there is a hole in the film-like resin, determine the apparent major axis and the apparent minor axis as described above, and then determine the portion of the hole from the apparent major axis or apparent minor axis length. Subtracting the length of the line across the line to obtain the length of the substantial major axis or the length of the minor axis, and then expressing the average of the length of the major major axis and the minor axis And

  As a specific example of the method for producing the center-filled cotton of the present invention, as described above, a step of applying a thermoplastic resin dispersion on the surface of the dense fiber web, and thermosetting on the other surface or the coarse fiber web side. It is preferable to include both steps with a step of applying an emulsion of a water-soluble resin, but it is possible to make various forms of insert cotton by combining both steps. For example, after a step of applying an emulsion of a thermosetting resin to the entire dense fiber web by impregnation and fixing after drying, a dispersion of a thermoplastic resin is applied to one surface of the dense fiber web by spraying. It is possible to take a step of attaching after drying. Also, after the step of applying a dispersion of thermoplastic resin to the surface of the dense fiber web by spraying and adhering it after drying, the emulsion of the thermosetting resin is applied to the other surface or the side of the coarse fiber web by spraying. Then, it is possible to take a process of drying and curing. The latter method using double-sided spraying is a more preferable method because the thermoplastic resin can easily adhere to the surface of the dense fiber web and the size of the resin mass can be reduced. In addition, since the latter method by the double-sided spray is applied to the inner cotton pad according to the first invention having the dense fiber layer, the thermoplastic resin is adhered to one surface of the dense fiber layer. In the other surface, the thermoplastic resin is not substantially adhered, and the center-filled cotton in the form in which the thermosetting resin is fixed is obtained. In addition, the latter method by the double-sided spray is applied to the filling cotton according to the second invention having the dense fiber layer and the coarse fiber layer, so that the thermoplastic resin adheres to the surface of the dense fiber layer. The thermoplastic resin is not substantially adhered to the surface of the coarse fiber layer, and the center-filled cotton in the form in which the thermosetting resin is fixed can be obtained. As a result, the effect as the filling cotton according to the second invention "because it is composed of a dense fiber layer and a coarse fiber layer, the shape of the resin on the face fabric even after the dense fiber layer is bonded to the face fabric Are not likely to appear, the surface of the surface fabric does not have irregularities, and the appearance of the surface fabric is excellent and can maintain a high-class feeling, and the coarse fiber layer is excellent in bulkiness and exhibits better heat retention Can be shared by the dense fiber layer and the coarse fiber layer. ”Can be obtained more remarkably.

  As described above, either of the two steps can be the other step, but a more preferable manufacturing method is to smooth the surface of the fiber web by smoothing the surface of the fiber web by heat pressing. There is a method in which a thermoplastic resin coating step is subsequently performed after the forming step, followed by a thermosetting resin coating step. By such a method, there is an advantage that a thermoplastic resin can be applied without impairing the smooth surface.

The thickness of the center-filled cotton of the present invention needs to be 2 to 30 mm, preferably 3 to 25 mm, more preferably 3 to 20 mm, and still more preferably 4 to 20 mm. When the thickness is less than 2 mm, the heat retention effect is inferior, and when it exceeds 30 mm, the film becomes too thick and has a problem that the style is also inferior when worn on the surface. The thickness is expressed as a thickness under a pressure of 0.5 gf / cm ² .

The surface density of the cotton placed in the present invention is preferably 10 to 200 g / ^{m 2,} more preferably from 20 to 100 g / ^{m 2,} and still more preferably from 30 to 80 g / ^{m 2} .

  The above-described middle-filled cotton of the present invention is preferably produced by the following method of producing the middle-filled cotton of the present invention.

  For the center-filled cotton according to the first invention, “a dense fiber web having an average fineness of constituent fibers of 0.5 to 3 dtex is smoothed by heat pressing at least one surface of the dense fiber web. Including a step of forming a smooth surface, a step of spraying a dispersion of a thermoplastic resin having a melting point of 150 ° C. or less on the one surface, and a step of bonding the constituent fibers of the dense fiber web. It is desirable to manufacture by the manufacturing method of the filling cotton characterized by these.

  For the center-filled cotton according to the second invention, “a dense fiber web having an average fineness of constituent fibers of 0.5 to 3 dtex, an average fineness of constituent fibers of 0.6 to 8 dtex, and the above A process of forming a laminated web by laminating coarse fiber webs having an average fineness higher than the average fineness of the dense fiber web, and smoothing the surface of the dense fiber web with a heat press to form a smooth surface. A step of applying a dispersion of a thermoplastic resin having a melting point of 150 ° C. or less to the smooth surface by spraying; a step of thermally melting the thermoplastic resin by heat processing and attaching the thermoplastic resin to the smooth surface; And a step of bonding the constituent fibers of the laminated web.

  Examples of the present invention will be described below, but these are only suitable examples for facilitating understanding of the invention, and the present invention is not limited to the contents of these examples.

(Thickness measurement method)
Four square test pieces of 25 cm in length and 25 cm in width are collected from an arbitrary position with respect to the sample for evaluation. Next, these test pieces are stacked and placed on a measuring table having a smooth upper surface, and a pressure plate having a square of 25 cm x 25 cm and having a mass of 312.5 g is placed on the four test pieces. Is placed so as to overlap with the test piece and pressed so that the load becomes 0.5 g / cm ² . Next, at the four corners of the test piece in this state, the thickness of the test pieces in a total of eight places is measured, two places on each side of the test piece. In addition, the said thickness records the measured value to the first decimal place as a value represented with the average value per test piece.

(Sample preparation method for initial adhesion test)
Ginadesine (surface density 105 g / m ² , thickness 0.28 mm), which is a relatively thin outer material, is prepared as the outer material. The test piece collected from the sample for evaluation and the surface material are overlapped so that the surface to which the thermoplastic resin is attached is inside, and a roller press is used under the conditions of a temperature of 130 ° C., a pressure of 0.29 MPa, and a press time of 10 seconds. Use and bond to create a test sample for initial adhesion.

(Sample preparation method for adhesion test after dry cleaning)
The above-mentioned initial adhesion test sample is subjected to dry cleaning using “Parklen” by a commercial dry cleaner, and after dry cleaning (hereinafter, sometimes referred to as DC post-adhesion). Create test samples for The dry cleaning conditions are 400 g total mass of load cloth and test piece, main wash 6 min, drainage 1.5 min, drainage 2 min, deceleration 0.5 min, 60 ° C. drying 10.5 min and deodorization 2 min 1 The cycle is repeated three times.

(Measurement method of adhesive strength)
The adhesive strength test is performed on the above-described test sample in accordance with JIS L1089 “Test method for adhesive cloth for clothing”. The measurement condition is that a sample of 5 cm in width is cut out from a test sample in a vertical direction and a horizontal direction in three pieces, left in a standard state (temperature 20 degrees, relative humidity 65%) for 12 hours or more, and then the distance between chucks is 20 mm. The tensile tester (Orientec Co., Ltd., Tensilon) set to 1 is used to measure the stress when the sample and the outer material are sandwiched between separate chucks and peeled to 60 mm in the length direction at a pulling speed of 300 mm / min. In the measurement, if the sample breaks in less than half of the sample, the maximum stress value is the adhesive strength, and if the sample breaks in more than half of the sample, the average value of the stress Is the adhesive strength.

(Sample preparation method for surface roughness, resin image, per resin, and exudation)
Ginadesine (surface density 105 g / m ² , thickness 0.28 mm), which is a relatively thin outer material, is prepared as the outer material. The test piece collected from the sample for evaluation and the surface material are overlapped so that the surface to which the thermoplastic resin is attached is inside, and a roller press is used under the conditions of a temperature of 130 ° C., a pressure of 0.29 MPa, and a press time of 10 seconds. Use and bond to make a test sample of "Surface roughness, resin image, per resin, and exudation".

(Evaluation method of surface roughness)
The test sample is visually observed from the surface side, and whether or not the unevenness on the surface of the surface is visible is evaluated as follows as a criterion.
Unevenness on the surface of the surface is inconspicuous ...
Unevenness on the surface of the surface is slightly noticeable ... △
Unevenness on the surface of the outer material is clearly visible ... ×

(Evaluation method of resin reflection)
The test sample is visually observed from the front side, and whether or not the particulate adhesive resin is noticeable is evaluated as follows as a criterion.
Adhesive resin is inconspicuous ... ○
Adhesive resin is slightly noticeable ... △
Adhesive resin clearly stands out ... ×

(Evaluation method per resin)
In a state where the test sample is manually pulled in the bias direction, the test sample is visually observed from the surface side, and whether or not the particle shape of the adhesive resin appears on the surface is evaluated as described below.
The particle shape of the adhesive resin is inconspicuous ...
The particle shape of the adhesive resin is slightly noticeable ...
The particle shape of the adhesive resin is clearly visible ... ×

(Exudation)
The test sample is visually observed from the front side, and whether or not there is a oozing is evaluated as follows as a criterion.
No exudation ... ○
There is a oozing ... ×

Example 1
A dense fiber having a surface density of 55 g / m ² consisting of 66% by mass of polyester fiber (fineness = 1.9 decitex, fiber length = 51 mm) and 34% by mass of polyester fiber (fineness = 6.6 decitex, fiber length = 51 mm). A fiber web was prepared by a carding machine.
Next, the surface temperature of a pair of smooth metal heat rolls is heated to 90 ° C., and a hot press treatment is performed by passing the dense fiber web under pressure between the pair of heat rolls, The surface of the dense fiber web was formed smoothly.
Next, a dispersion prepared in advance, that is, a dispersion in which a polyamide resin (melting point = 120 ° C.), which is a thermoplastic resin, and a polyester resin (melting point = 120 ° C.) are dispersed in the form of fine particles (solid content concentration 7 %, Solid mass ratio: polyamide resin / polyester resin = 70/30) on one surface of the dense fiber web so that the surface density is 2 g / m ² (dry solid content). The flat spray nozzle A manufactured by the company was applied by a spray method, and then the dense fiber web was dried using a dryer.
Next, the emulsion liquid prepared in advance, that is, the emulsion liquid (solid content concentration 4%) of the acrylic resin (Tg = −5 ° C.) which is a thermosetting resin is applied to the other surface of the dense fiber web. The density is 3 g / m ² (dried solid content) by spraying using a flat spray nozzle B manufactured by Spraying System Japan, and then using a dryer on this dense fiber web. Then, drying and curing were performed to obtain a filling cotton.
The average fineness of the constituent fibers of the middle-filled cotton dense fiber layer was 2.5 dtex. Further, the surface density of the filled cotton was 60 g / m ² and the thickness was 6.0 mm. Further, in the resin lump made of thermoplastic resin adhering to the surface of the inner cotton pad, the number of resin lump having a resin lump size in the range of 30 to 500 μm was about 83% of the total number. It was. Moreover, the initial adhesive strength was 0.45 N / 5 cm, and the adhesive strength after dry cleaning was 0.00 N / 5 cm. Further, evaluation of surface roughness, resin image, per resin and exudation was as shown in Table 1.

(Example 2)
Instead of the dense fiber web of Example 1, 30% by mass of polyester fiber (fineness = 0.8 dtex, fiber length = 35 mm) and 30% by mass of polyester fiber (fineness = 1.1 dtex, fiber length = 38 mm) Highly crimped polyester fiber (fineness = 1.7 dtex, fiber length = 44 mm) formed from two types of polyester resin components and exhibiting spiral crimps, and a core sheath having a low melting point component in the sheath Except that a dense fiber web having a surface density of 55 g / m ² consisting of 5% by mass of a type composite polyester fiber (fineness = 2.2 decitex, fiber length = 51, melting point of sheath component about 110 ° C.) was prepared by a card machine In the same manner as in Example 1, a cotton pad was obtained.
The average fineness of the constituent fibers of the dense cotton layer of the middle-filled cotton was 1.1 dtex. Further, the surface density of the filled cotton was 60 g / m ² and the thickness was 6.0 mm. Further, in the resin lump made of thermoplastic resin adhering to the surface of the inner cotton pad, the number of resin lump whose resin lump size falls within the range of 30 to 500 μm is about 86% of the total number. It was. Moreover, the initial adhesive strength was 0.82 N / 5 cm, and the adhesive strength after dry cleaning was 0.00 N / 5 cm. Further, evaluation of surface roughness, resin image, per resin and exudation was as shown in Table 1.

(Example 3)
Polyester fiber (fineness = 1.45 dtex, fiber length = 51 mm) 40% by mass and high crimped polyester fiber (fineness = 3.3 dtex) formed from two types of polyester resin components and exhibiting spiral crimps (Fiber length = 51 mm) 20% by mass and latent crimped fiber (fineness = 2.2 dtex, fiber length = 51 mm) in which side-by-side polyester and modified polyester are arranged and configured in a side-by-side manner, areal density of 40 g / the dense fiber web of m ² was prepared by a carding machine.
Next, the surface temperature of a pair of smooth metal heat rolls is heated to 170 ° C., and a hot press treatment is performed by passing the dense fiber web under pressure between the pair of heat rolls, The crimped fibers contained in the dense fiber web were crimped to strengthen the entanglement between the fibers, and the surface of the dense fiber web was formed smoothly.
Next, a dispersion prepared in advance, that is, a dispersion in which a polyamide resin (melting point = 120 ° C.), which is a thermoplastic resin, and a polyester resin (melting point = 120 ° C.) are dispersed in the form of fine particles (solid content concentration 7 %, Solid mass ratio: polyamide resin / polyester resin = 70/30) on one surface of the dense fiber web so that the surface density is 2 g / m ² (dry solid content). The flat spray nozzle A manufactured by the company was applied by a spray method, and then the dense fiber web was dried using a dryer.
Next, an emulsion solution prepared in advance, that is, an emulsion solution (solid content concentration 7%) of an acrylic resin (Tg = −34 ° C.) that is a thermosetting resin is applied to the other surface of the dense fiber web. The density is 3 g / m ² (dried solid content) by spraying using a flat spray nozzle B manufactured by Spraying System Japan, and then using a dryer on this dense fiber web. Then, drying and curing were performed to obtain a filling cotton.
The average fineness of the constituent fibers of the middle-filled cotton dense fiber layer was 1.9 dtex. Further, the surface density of the filled cotton was 45 g / m ² and the thickness was 3.0 mm. Further, in the resin lump made of thermoplastic resin attached to the surface of the inner cotton pad, the number of the resin lump whose size falls within the range of 30 to 500 μm is about 85% of the total number. It was. Moreover, the initial adhesive strength was 0.35 N / 5 cm, and the adhesive strength after dry cleaning was 0.00 N / 5 cm. Further, evaluation of surface roughness, resin image, per resin and exudation was as shown in Table 1.

Example 4
Highly crimped polyester fiber (fineness = 2.2 decitex, fiber length = 51 mm) 80% by mass formed from two types of polyester resin components and exhibiting spiral crimps, and spiral formed from two types of polyester resin components Highly crimped polyester fiber (fineness = 3.3 decitex, fiber length = 51 mm) 10% by weight, and latent crimped fiber (fineness = 2) in which the polyester and modified polyester are arranged in a side-by-side manner. A crude fiber web having a surface density of 25 g / m ² consisting of 10% by weight (.2 dtex, fiber length = 51 mm) was prepared by a card machine.
Next, 40% by mass of polyester fibers (fineness = 1.45 dtex, fiber length = 51 mm) and high-crimped polyester fibers (fineness = 3.3) formed from two types of polyester resin components and exhibiting spiral crimps. Area density consisting of 20% by mass of decitex, fiber length = 51 mm) and 40% by weight of latent crimped fiber (fineness = 2.2 decitex, fiber length = 51 mm) in which side-by-side polyester and modified polyester are arranged and configured. A dense fiber web of 15 g / m ² was prepared by a carding machine, and was laminated on the aforementioned coarse fiber web to form a laminated web.
Next, the surface temperature of a pair of smooth metal heat rolls is heated to 170 ° C., and a heat press treatment is performed by passing the laminated web under pressure between the pair of heat rolls. The latent crimped fibers contained in the dense fiber web were crimped to strengthen the entanglement between the fibers, and the surface of the dense fiber web was formed smoothly.
Next, a dispersion prepared in advance, that is, a dispersion in which a polyamide resin (melting point = 120 ° C.), which is a thermoplastic resin, and a polyester resin (melting point = 120 ° C.) are dispersed in the form of fine particles (solid content concentration 7 %, Solid mass ratio: polyamide resin / polyester resin = 70/30) on the surface of the dense fiber web so that the surface density is 2 g / m ² (dry solid content). Coating was performed by a spray method using a flat spray nozzle A manufactured by the company, and then the laminated web was dried using a dryer.
Next, the emulsion liquid prepared in advance, that is, the emulsion liquid (solid content concentration 7%) of acrylic resin (Tg = −34 ° C.) which is a thermosetting resin is applied to the surface of the coarse fiber web. It apply | coats by the spray method using the flat spray nozzle B by the spraying system Japan company so that it may become 3 g / m < ² > (dry solid content), Then, it dries with a dryer with respect to this lamination | stacking web. Curing was performed to obtain a filling cotton.
The average fineness of the entire constituent fibers of the middle cotton is 2.0 dtex, the average fineness of the constituent fibers of the dense fiber layer is 1.9 dtex, and the average fineness of the constituent fibers of the coarse fiber layer is 2.3 dtex. Met. Further, the surface density of the filled cotton was 45 g / m ² and the thickness was 4.5 mm. In addition, among the resin lumps made of the thermoplastic resin attached to the surface of the dense fiber layer of the inner cotton pad, the number of resin lumps whose size of the resin lumps falls within the range of 30 to 500 μm is about the total number. 83%. Moreover, the initial adhesive strength was 0.30 N / 5 cm, and the adhesive strength after dry cleaning was 0.00 N / 5 cm. Further, evaluation of surface roughness, resin image, per resin and exudation was as shown in Table 1. Moreover, the photograph which image | photographed the surface of the dense fiber layer with the microscope picture is shown in FIG.

(Comparative Example 1)
Instead of the dense fiber web of Example 1, 40% by mass of polyester fiber (fineness = 1.9 decitex, fiber length = 51 mm) and 60% by mass of polyester fiber (fineness = 6.6 decitex, fiber length = 51 mm) In the same manner as in Example 1 except that a dense fiber web having a surface density of 55 g / m ² was prepared by a carding machine, a cotton pad was obtained.
The average fineness of the constituent fibers of the middle-filled cotton dense fiber layer was 3.3 dtex. Further, the surface density of the filled cotton was 60 g / m ² and the thickness was 6.0 mm. Further, in the resin lump made of thermoplastic resin adhering to the surface of the inner cotton pad, the number of resin lump whose resin lump size falls within the range of 30 to 500 μm is about 80% of the total number. It was. The initial adhesive strength was 0.40 N / 5 cm, and the adhesive strength after dry cleaning was 0.00 N / 5 cm. Further, evaluation of surface roughness, resin image, per resin and exudation was as shown in Table 1.

(Comparative Example 2)
Instead of the dense fiber web of Example 1, 40% by mass of polyester fiber (fineness = 1.9 decitex, fiber length = 51 mm) and 60% by mass of polyester fiber (fineness = 6.6 decitex, fiber length = 51 mm) A dense fiber web having a surface density of 55 g / m ² was prepared by a card machine, and the dispersion of the thermoplastic resin of Example 1 was applied by a spray method using a flat spray nozzle C instead of the flat spray nozzle A. A cotton pad was obtained in the same manner as in Example 1 except that. The flat spray nozzle C is a nozzle having a larger discharge amount than the flat spray nozzle A.
The average fineness of the constituent fibers of the middle-filled cotton dense fiber layer was 3.3 dtex. Further, the surface density of the filled cotton was 60 g / m ² and the thickness was 6.0 mm. Further, in the resin lump made of thermoplastic resin adhering to the surface of the inner cotton pad, the number of resin lump whose size falls within the range of 30 to 500 μm is about 55% of the total number. The number of resin lumps whose size exceeds 500 μm was about 36% of the total number. The initial adhesive strength was 0.25 N / 5 cm, and the adhesive strength after dry cleaning was 0.00 N / 5 cm. Further, evaluation of surface roughness, resin image, per resin and exudation was as shown in Table 1.

(Comparative Example 3)
Instead of the laminated web of Example 4, a cored cotton was obtained in the same manner as in Example 4 except that the laminated web described below was used.
Highly crimped polyester fiber (fineness = 2.2 decitex, fiber length = 51 mm) 20% by mass formed from two types of polyester resin components and exhibiting spiral crimps, and spiral formed from two types of polyester resin components Highly crimped polyester fiber (fineness = 6.6 decitex, fiber length = 51 mm) 70% by mass expressing the crimps of the mold, and latent crimped fiber (fineness = 2) arranged side by side with polyester and modified polyester A crude fiber web having a surface density of 25 g / m ² consisting of 10% by weight (.2 dtex, fiber length = 51 mm) was prepared by a card machine.
Next, 55% by mass of polyester fibers (fineness = 6.6 decitex, fiber length = 51 mm) and high-crimped polyester fibers (fineness = 3.3) formed from two types of polyester resin components and exhibiting spiral crimps. Area density comprising 5% by mass of decitex (fiber length = 51 mm) and 40% by weight of latent crimped fibers (fineness = 2.2 decitex, fiber length = 51 mm) in which side-by-side polyester and modified polyester are arranged and configured. A dense fiber web of 15 g / m ² was prepared by a carding machine, and was laminated on the aforementioned coarse fiber web to form a laminated web.
The average fineness of the entire constituent fibers of the middle cotton is 3.9 dtex, the average fineness of the constituent fibers of the dense fiber layer is 3.6 dtex, and the average fineness of the constituent fibers of the coarse fiber layer is 4.1 dtex. Met. Further, the surface density of the filled cotton was 45 g / m ² and the thickness was 7.0 mm. In addition, among the resin lumps made of the thermoplastic resin attached to the surface of the dense fiber layer of the inner cotton pad, the number of resin lumps whose size of the resin lumps falls within the range of 30 to 500 μm is about the total number. 79%. The initial adhesive strength was 0.27 N / 5 cm, and the adhesive strength after dry cleaning was 0.00 N / 5 cm. Further, evaluation of surface roughness, resin image, per resin and exudation was as shown in Table 1.

(Table 1)

  As can be understood from Table 1 above, the middle-filled cotton of Examples 1 to 4 has no surface roughness compared to Comparative Examples 1 to 3, and there is no resin, so it was bonded to the surface fabric. Later, the shape of the resin did not easily appear on the surface fabric, the surface of the surface fabric did not have irregularities, and the inner surface was excellent in the appearance of the surface fabric and maintained a high-class feeling.

It is an example of the microscope picture which image | photographed the inside insertion cotton of this invention from the dense surface layer side.

Claims (13)

  It has a dense fiber layer in which constituent fibers having an average fineness of 0.5 to 3 dtex are bonded, and a thermoplastic resin having a melting point of 150 ° C. or less adheres irregularly to one surface of the dense fiber layer. An inside cotton pad having a thickness of 2 to 30 mm.   A dense fiber layer composed of constituent fibers having an average fineness of 0.5 to 3 dtex, and a constituent fiber having an average fineness of 0.6 to 8 dtex and an average fineness higher than the average fineness of the constituent fibers of the dense fiber layer And a constituent fiber of the coarse fiber layer is bonded, and a thermoplastic resin having a melting point of 150 ° C. or lower is irregularly attached to the surface of the dense fiber layer, An inside cotton pad having a thickness of 2 to 30 mm.   3. The center-filled cotton according to claim 1 or 2, wherein constituent fibers of the dense fiber layer and / or the coarse fiber layer are bonded by a thermosetting resin.   The surface of the dense fiber layer is a smooth surface by heat processing, and the thermoplastic resin is irregularly attached to the smooth surface. Put cotton.   The constituent fibers of the dense fiber layer and / or the coarse fiber layer include crimped fibers and / or heat-bondable fibers in which crimps of latent crimpable fibers are expressed. Filled cotton.   Among the resin lumps made of thermoplastic resin attached to the surface of the dense fiber layer, the number of resin lumps whose size falls within the range of 30 to 500 μm is 70% or more of the total number. Filling cotton according to any one of claims 1 to 5.   The center-filled cotton according to any one of claims 1 to 6, wherein the thermoplastic resin includes a polyamide-based resin and a polyester-based resin.   The thermosetting resin is a thermosetting resin emulsion that is applied by spraying and heat-cured by heat processing. The thermoplastic resin is heat-processed after a dispersion of the thermoplastic resin is applied by spraying. The center-filled cotton according to any one of claims 3 to 7, which is heat-melted.   9. The temporary insertion type intermediate insertion cotton having a function of adhering to a surface material by melting of a thermoplastic resin when sewing and then peeling from the surface material at the time of washing. Filled with cotton.   A step of smoothing at least one surface of the dense fiber web by heat pressing a dense fiber web having an average fineness of the constituent fibers of 0.5 to 3 dtex, and a melting point on the one surface A method for producing a filling cotton comprising: a step of applying a dispersion of a thermoplastic resin at 150 ° C. or less by spraying; and a step of bonding constituent fibers of the dense fiber web.   The step of bonding the constituent fibers of the dense fiber web includes a step of spraying a thermosetting resin emulsion on the other surface of the dense fiber web, and thermosetting the thermosetting resin by heat processing. The method for producing the center-filled cotton according to claim 10, further comprising a step of bonding constituent fibers of the dense fiber web.   A dense fiber web having an average fineness of constituent fibers of 0.5 to 3 dtex, and a coarse fiber having an average fineness of constituent fibers of 0.6 to 8 dtex and higher than the average fineness of the dense fiber web A step of laminating a web to form a laminated web, a step of smoothing the surface of the dense fiber web by heat pressing the laminated web to form a smooth surface, and heat having a melting point of 150 ° C. or less on the smooth surface. A step of applying a dispersion of a plastic resin by spraying, a step of thermally melting the thermoplastic resin to adhere to the smooth surface by heat processing, and a step of bonding constituent fibers of the laminated web. A method for producing a filling cotton characterized by the above.   The step of bonding the constituent fibers of the laminated web includes the step of spraying a thermosetting resin emulsion on the coarse fiber web side by spraying, and the thermosetting resin is thermoset by heat processing to form the laminated web. The method for producing the center-filled cotton according to claim 12, further comprising a step of bonding the constituent fibers.

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