JPH09228122A - Interlining - Google Patents

Abstract

(57) [Summary] [Purpose] To provide an interlining material which does not cause widthning during production, is made of a homogeneous fiber web, is soft and stretchable, and does not easily cause a fastener phenomenon. [Constitution] A fiber web mainly composed of latently crimpable fibers,
An interlining material comprising a fiber web mainly composed of fibers other than the latently crimpable fibers laminated, the crimps of the latently crimpable fibers being expressed, and impregnated with a resin. .

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an interlining material, particularly an elastic interlining material used for clothes and the like.

[0002]

2. Description of the Related Art Conventionally, an interlining in which fibers are bonded with a resin has been used. However, when an attempt is made to obtain a resin having sufficient strength, the amount of resin increases, and the resin is applied to a large number of fiber intersections. There is a drawback that the texture becomes hard because the coating is formed.

As a remedy to this drawback, interlinings joined by forming a number of point-like heat-sealed portions on a fibrous web have been widely used. Since the interlinings are connected by the dot-shaped heat-sealing portions, even if the interlining is thin, soft and strong one can be obtained. However, this interlining has no stretch or stiffness because the fibers are fixed between the dot-shaped heat-sealed parts, and it does not follow the movement of the body or the stretch of the outer material sufficiently. There was a problem when used.

On the other hand, a highly crimped fiber is used as the constituent fiber of the interlining having the above-mentioned point-like heat-sealed portions, and the spring effect by crimping the fibers between the point-like heat-sealed portions is used. It has been proposed that an interlining material that gives elasticity and has elasticity. However, in this interlining, since the raw material fibers have been crimped in advance, when the fiber web is formed by the card machine, the fibers are entangled with each other to form a nip (ball with entangled fibers), It was difficult to form a uniform fibrous web due to poor compatibility.

Therefore, the present inventors have examined the use of latently crimpable fibers in place of the above highly crimped fibers. Since the latently crimpable fiber has the property of increasing the number of crimps when heated, it can be handled with a small number of crimps at the time of forming the fibrous web, so that a homogeneous fibrous web can be formed and the crimps can be expressed after the fibrous web is formed. It was possible to give stretchability to the interlining. However, when the latent crimpable fiber is used, there is another problem that the interlining shrinks as the crimp appears. In particular, the shrinkage in the width direction, that is, the so-called width-drawing, is a problem because the width required for the product cannot be obtained when manufactured by the existing production apparatus.

[0006] In particular, in the case of an interlining having a spot-like heat-sealed portion using latent crimpable fibers, when laminated with a hair core or the like, the fibers are entangled with the hair core or the like. There are problems that a fastener phenomenon occurs, workability of sewing work is deteriorated, and wrinkles are generated due to entanglement with the hair core after sewing.

[0007]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and does not cause widthning during manufacturing, is composed of a homogeneous fiber web, and is soft and stretchable. Therefore, it is an object of the present invention to provide an interlining material in which the fastener phenomenon does not easily occur.

[0008]

Means for Solving the Problems The above problems are caused by laminating a fiber web mainly composed of latently crimpable fibers and a fiber web mainly composed of fibers other than latently crimpable fibers according to the present invention. It is solved by the interlining material characterized in that the crimp of the latently crimpable fiber is developed and the resin is impregnated.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION The interlining of the present invention is manufactured because a fiber web mainly composed of latently crimpable fibers and a fiber web mainly composed of fibers other than latently crimpable fibers are laminated. Even when the crimp of the latently crimpable fiber is sometimes expressed, the width of the web is prevented by the action of the fiber web mainly composed of the fibers other than the latently crimpable fiber. In addition, since the latent crimpable fibers are crimped and impregnated with a resin, they are excellent in stretchability, have elasticity, and have a soft core even though they have a soft texture, and have a hair core. When used by stacking with, the fastener phenomenon is unlikely to occur and handling is excellent.

In the present invention, the fiber web mainly composed of latently crimpable fibers means a fibrous web containing at least 50% by weight of latently crimpable fibers. The fiber web mainly composed of latently crimpable fibers preferably contains 60% by weight or more of latently crimpable fibers, and may be 100% by weight of latently crimpable fibers.

The latently crimpable fiber used in the present invention is preferably a fiber which undergoes a large number of crimps, particularly coiled or spiral crimps, when heated. The latent crimpable fiber is one in which the number of crimps after expression is increased to at least twice the number of crimps at room temperature before expression when 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 the fibers are heated at 170 ° C. for 15 minutes without applying an external force.

As the latent crimpable fiber, a composite fiber in which two kinds of resins having different melting points are composited, or a fiber obtained by subjecting a part of the fiber to a specific heat history is used. As the conjugate fiber, for example, an eccentric core-sheath structure conjugate fiber or a side-by-side (bonding) type conjugate 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 are combined. Things can be used. In particular, the latently crimpable fiber composed of polyester-low melting point polyester is preferable because it has excellent heat resistance and stretchability after crimping. Also,
As a fiber obtained by subjecting a part of the fiber to a specific heat history, for example, a heat history is given by passing it while applying one side of a fiber made of a thermoplastic resin such as polyester, polyamide, or polyacrylic to a hot blade. Fiber etc. are used.

As the fibers other than the latently crimpable fibers, fibers which do not substantially increase the crimp by heating are used. For example, generally-used polyester fibers, nylon fibers, and polyolefin fibers are used. Fibers such as fibers, polyacrylic fibers, rayon fibers, cotton, and wool, and composite fibers that do not substantially increase the number of crimps by heating are used. Examples of such a composite fiber include a core-sheath composite fiber made of a combination of resins such as dyeable polyester-polyamide. The term "fibers that do not substantially increase the number of crimps due to heating" means that the number of crimps increases even if some increase in crimps occurs when the fibers are heated in a state where no external force is applied. It means that the amount is less than 50% of the original number of crimps.

In the present invention, the fiber web containing fibers other than latently crimpable fibers as a main component means a fiber web containing at least 50% by weight or more of fibers other than latently crimpable fibers. The fiber web mainly composed of fibers other than the latently crimpable fibers more preferably contains 60% by weight or more of fibers other than the latently crimpable fibers.

The fiber web mainly composed of fibers other than the latent crimpable fibers is laminated with the fiber web mainly composed of the latent crimpable fibers to produce a width during production of the fiber web mainly composed of the latent crimpable fibers. Although it acts to prevent pulling, it may reduce stretchability in the production direction depending on the fiber orientation of the fibrous web. Therefore, the latent crimpable fiber may be blended in the fiber web mainly containing fibers other than the latent crimpable fiber, if necessary. However, the amount of latently crimpable fibers is 40
It is desirable that the amount is not more than 30% by weight, more preferably not more than 30% by weight.

In the interlining of the present invention, a fiber web mainly composed of latently crimpable fibers and a fiber web mainly composed of fibers other than latently crimpable fibers are laminated. May be one, or may be two or more.

In particular, when it is strongly required to prevent the fastener phenomenon with the hair core or the like, the lower surface of the interlining which comes into contact with the hair core or the like (in the case of the adhesive interlining, the surface on which the adhesive resin is arranged) For the lower layer fibrous web forming the opposite surface), it is desirable to use a fibrous web mainly containing fibers other than the latently crimpable fibers. A fiber web mainly composed of fibers other than latently crimpable fibers has a large number of crimps such as a coil and a spiral obtained by expressing crimps of latently crimpable fibers which cause a fastener phenomenon. Since it does not contain much fiber, the fastener phenomenon is less likely to occur.

The fiber orientation of each fibrous web is not particularly limited, but the fibrous web mainly composed of latently crimpable fibers is a unidirectional web, and the fibrous web mainly composed of fibers other than latently crimpable fibers is crossed. It is preferable to consist of the web. Here, the unidirectional web refers to a fiber web in which the fibers constituting the fiber web are oriented substantially in one direction, and is produced, for example, by directly laminating fibers discharged from a card machine. In this case, the constituent fibers are generally oriented in the production direction. Further, the cross web means a fiber web in which the fibers constituting the fiber web are oriented in approximately two directions, and the two directions intersect each other. For example, the fibers from the card machine are cross-laminated by a cross wrapper or the like. It is manufactured by doing. In this case, the constituent fibers are generally oriented in the width direction. When the fibers of each fibrous web are oriented as described above, when the crimp of the latent crimpable fiber is expressed, even if the shrinkage occurs in the production direction, the shrinkage hardly occurs in the width direction, and the width reduction is performed. Can be prevented.

After laminating each fibrous web, the latent crimpable fibers are crimped by heating. As the heating means, there are a dryer, a heating roll, and the like, and in particular, the heating means arranged at regular intervals such as passing a laminated fibrous web between a pair of heating rolls having a predetermined interval. It is desirable to heat-treat the fibrous web while limiting the thickness of the fibrous web. By doing so, the crimp expression of the latently crimpable fibers in the fibrous web does not work in the direction of increasing the thickness, the fibers work more intertwined, and some strength is achieved without using other fiber bonding means. Laminated fibrous webs can be formed. The interval of the heating means is not particularly limited, but is preferably narrower than the thickness of the laminated fibrous web before passing through the heating means, and is preferably 0.1 to 1 mm, for example.

After this, the laminated fibrous web is impregnated with resin. The resin impregnation suppresses the fastener phenomenon which is considered to be caused by the fiber having a large number of coil-shaped or spiral-shaped crimps obtained by expressing the crimps of the latently crimpable fibers. The reason for this is not clear, but it is considered that this is because the resin coating is formed on the crimped portion of the fiber by impregnation with the resin and the entanglement with the fiber such as the hair core is prevented. As the resin to be impregnated, polyacrylic acid ester resin, polyurethane resin or the like is used. The resin is applied by impregnating the laminated fibrous web in solution, such as a resin emulsion, and drying. The resin is preferably impregnated from the lower surface of the interlining (in the case of the adhesive interlining, the surface opposite to the surface on which the adhesive resin is arranged). Further, the impregnation of the resin does not necessarily have to reach the entire interlining, and it is sufficient that at least the lower surface side of the interlining is impregnated with the resin.

The ratio of the amount of the resin adhered (the amount of the solid content adhered) to the weight of the fiber (fiber weight / resin weight) is 97/3 to 70.
It is desirable to be in the range of / 30. If the proportion of resin is less than this range, it becomes difficult to sufficiently suppress the fastener phenomenon, and if the proportion of resin is more than this range, the feel of the interlining material becomes hard. More preferable fiber weight / resin weight ratio is 95/5 to 80/2
0, and a particularly preferable fiber weight / resin weight ratio is 9
It is 0/10 to 82/18.

In the interlining of the present invention, the fibers are entangled by expressing the crimp of the latently crimpable fiber, in particular by expressing the crimp while controlling the thickness between heating rolls and the like. As described above, even if the amount of resin is reduced, sufficient strength can be imparted to the interlining, and since the amount of resin is small, the softness can be realized without impeding the elasticity of the interlining.

The interlining of the present invention is obtained by laminating a fiber web mainly composed of latently crimpable fibers and a fiber web mainly composed of fibers other than latently crimpable fibers, and then passing it between heating embossing rolls. Along with forming a point-like heat-sealed portion, the crimp of the latent crimpable fiber is expressed, or the fibers of the latent crimpable fiber are entangled with each other by hydroentangling and then the crimp of the latent crimpable fiber is expressed by the heating means. May be. Thus, by using the laminated web in combination with other fibrous web bonding methods such as thermal bonding or mechanical entanglement, the amount of resin impregnated can be reduced,
A strong, softer interlining material is obtained.

Further, the interlining of the present invention may be reinforced with a thread if necessary. For the thread, for example, it is desirable that the knitting structure by the thread is combined with the interlining by performing chain stitch or Denbi stitch on the interlining using a Russell knitting machine or a single-thread chain stitch sewing machine. . In this way, the reinforcement with the thread can be performed without hindering the elasticity of the interlining. In particular, when chain stitching is applied in the vertical direction (production direction) of the interlining, good stretchability is obtained up to the point where the stitches of the chain stitch are fully stretched, and at the point where the stitch is fully stretched, the yarn does not stretch and the form of the interlining. It is good because it works to stabilize. It should be noted that it is preferable to use, as the thread, a thread that can be stretched, such as a thread processed by the thread method, because the followability to the elongation of the interlining is further improved.

The interlining of the present invention may be used as an adhesive interlining by adhering an adhesive resin. As the adhesive resin, a polyamide resin, a polyester resin, a polyolefin resin, or the like may be used alone or in combination. The adhesive resin is used by arranging it in a suitable pattern such as dots or stripes on the surface of the interlining, but especially when it is provided in dots, the interlining expands and contracts even after bonding with the outer material. It is good because it is difficult to inhibit sex. The adhesion amount of the adhesive resin is not particularly limited because it varies depending on the type of interlining material and the type of surface material to be adhered, but is ^{2 to 20} g / m ² , and more preferably 3 to
A range of 15 g / m ² is preferred. If the amount is less than the above range, the adhesive force will be insufficient, and if the amount is more than the above range, the texture after adhesion to the surface material or the like will be hard and the resin may exude.

[0026]

【Example】

Example 1 Polyester having a fineness of 1.5 denier and a fiber length of 51 mm /
Low melting point polyester latent crimpable conjugate fiber 70% by weight,
Unidirectional fiber web consisting of 30% by weight of nylon / polyester core-sheath type composite fiber having a fineness of 1.2 denier and fiber length of 44 mm, and polyester / low melting point polyester latent crimping property having a fineness of 1.5 denier and fiber length of 51 mm After laminating 30% by weight of the composite fiber and 70% by weight of a nylon / polyester core-sheath type composite fiber having a fineness of 1.2 denier and a fiber length of 44 mm, a cross fiber web, a slit between rolls 0.5 mm, temperature 175 ° C. Was passed through a pair of heating rolls to develop the crimp of the latent crimpable conjugate fiber to form a laminated fiber web having a basis weight of 23 g / m ² . Next, this laminated fibrous web was impregnated with an acrylic acid ester resin emulsion solution and dried to obtain an interlining with a basis weight of 28 g / m ² . The fiber weight / resin weight was 82/18.
A polyamide resin (melting point: 115 ° C.) was applied in a dot shape at 10 g / m ² on the unidirectional fiber web side of the interlining to obtain an adhesive interlining. The number of dots attached is 37 / cm ²
Met.

Example 2 Polyester having a fineness of 1.5 denier and a fiber length of 51 mm /
Low melting point polyester latent crimpable conjugate fiber 70% by weight,
Unidirectional fiber web consisting of 30% by weight of nylon / polyester core-sheath type composite fiber having a fineness of 1.2 denier and fiber length of 44 mm, and polyester / low melting point polyester latent crimping property having a fineness of 1.5 denier and fiber length of 51 mm After laminating 30% by weight of the composite fiber and 70% by weight of a nylon / polyester core-sheath type composite fiber having a fineness of 1.2 denier and a fiber length of 44 mm, a cross fiber web, a slit between rolls 0.5 mm, temperature 175 ° C. The latent crimpable conjugate fiber was crimped by passing it through a pair of heating rolls to form a laminated fiber web having a basis weight of 19 g / m ² . Next, this laminated fibrous web was impregnated with an acrylic ester resin emulsion solution and dried to obtain an interlining having a basis weight of 22 g / m ² . The fiber weight / resin weight was 86/14.
The obtained interlining was subjected to 18-gauge chain stitch by using a polyester denier thread by 30-denier thread method by a Russell knitting machine (RS3MSU-V manufactured by Karlmeier Co., Ltd.) to be reinforced with the thread. A polyamide resin (melting point: 115
(° C) was applied in a dot shape at 10 g / m ² to obtain an adhesive interlining material. The number of dots deposited was 37 / cm ² .

Comparative Example 1 70% by weight of polyester fiber having a fineness of 1.5 denier and a fiber length of 47 mm, and a fineness of 1.2 denier and a fiber length of 38 mm
A fiber web having a basis weight of 23 g / m ² consisting of 30% by weight of the nylon / polyester core-sheath type composite fiber of Example ² was impregnated with an acrylic ester resin emulsion solution and dried to prepare an interlining having a basis weight of 29 g / m ² . A polyamide resin (melting point: 115 ° C.) was adhered to the interlining in a dot shape at 10 g / m ² to obtain an adhesive interlining. The number of dots attached is 37 /
cm ² .

Comparative Example 2 Unidirectional fiber web composed of 100% by weight of polyester fiber having a fineness of 1.5 denier and fiber length of 47 mm, and polyester fiber 1 having a fineness of 1.5 denier and fiber length of 47 mm
Laminated with a cross-woven fibrous web consisting of 00% by weight, temperature 1
By passing through a heating embossing roll at 90 ° C., an interlining with a basis weight of 25 g / m ² having a large number of dot-like heat-sealed parts was obtained.
A polyamide resin (melting point: 115 ° C.) was adhered to the interlining in a dot shape at 10 g / m ² to obtain an adhesive interlining. The number of dots attached was 37 / cm ² .

Comparative Example 3 Polyester having a fineness of 1.5 denier and a fiber length of 44 mm /
A fibrous web consisting of 100% by weight of the latently crimpable conjugate fiber having a low melting point is passed through a heating embossing roll at a temperature of 190 ° C. to develop the crimping of the latently crimpable conjugate fiber and to produce a large number of dot-like heat melts. 25g basis weight with a fitting
An interlining of / m ² was obtained. Note that when the latent crimpable conjugate fiber was crimped, about 25% width reduction occurred. Polyamide resin (melting point: 115 ° C) was applied to this interlining in a dot shape at 10 g /
m ^{2 was} adhered to obtain an adhesive interlining. The number of dots attached was 37 / cm ² .

When the number of crimps of the composite fiber used in each of the above Examples and Comparative Examples was measured for each fiber alone,
The number of crimps of the polyester / low-melting point polyester latent crimpable conjugate fiber at room temperature (20 ° C.) is 12 / inch, and is 17
The number of crimps after heating at 0 ° C for 15 minutes is 120 / inch, while the number of crimps of the nylon / polyester core-sheath type composite fiber at room temperature (20 ° C) is 11 / inch,
The number of crimps did not change even after heating at 0 ° C. for 15 minutes.

The adhesive interlining of each of the above Examples and Comparative Examples was subjected to a tensile / shear tester (KES-F manufactured by Kato Tech Co., Ltd.).
B1), pure bending tester (KES manufactured by Kato Tech Co., Ltd. KES
-FB2) was used for evaluation and shown in Table 1. In Table 1, EMT is the tensile elongation (unit:%) of the interlining alone at a constant load (50 g / cm), and B is the bending rigidity per unit length of the composite cloth in which the adhesive interlining and the outer material are adhered. (unit:
gf · cm ² / cm), G is the shear rigidity per unit width of the composite cloth in which the adhesive interlining and the outer material are adhered (unit: gf /
cm · degree). Each of the above-mentioned composite cloths was provided with an adhesive interlining material having a basis weight of 170 g / m ^{2 and made} of wool tropical, and a Reliant press machine at a temperature of 13
A product obtained by pressing and adhering for 10 seconds under the conditions of 0 ° C. and a pressure of 3 kg / cm ² was used.

Further, in order to investigate the fastener phenomenon of the adhesive interlining material, the fastener effect was measured by the following method and shown in Table 2. The fastener effect is that the adhesive interlining is adhered to the T / W tropical outer material and the adhesive interlining is placed on top, and an acrylic plate (length 15 cm, width 10 cm, weight 1
55 g) with a core (manufactured by Tokai Thermo Co., Ltd. product name: AL-
350) is placed so that the core touches the core ground, the acrylic plate is pulled in the horizontal direction, and the maximum stress immediately after the acrylic plate starts to move (force required to pull)
Then, the average stress after starting to move was measured and obtained.

[0034]

[Table 1]

[0035]

[Table 2]

As is clear from Tables 1 and 2, Example 1,
Compared with the interlinings of Comparative Examples 1 and 2, the interlining of No. 2 has elasticity, has a small bending rigidity and shearing rigidity, and has a soft texture, and has a fastener phenomenon as compared with the interlining of Comparative Example 3. Unlikely to occur.

[0037]

INDUSTRIAL APPLICABILITY The interlining of the present invention comprises a fiber web mainly composed of latently crimpable fibers and a fiber web mainly composed of fibers other than latently crimpable fibers, which are laminated. Since the crimp of the elastic fiber is developed and the resin is impregnated, it is excellent in stretchability and has elasticity, even though the texture is soft. In addition, there is no concern that a fastener phenomenon will occur when it is used by laminating it with a hair core and the like, and is excellent in handleability. Furthermore, an interlining having a uniform fibrous web structure can be easily produced without causing troubles such as width drawing during production.

Claims (5)

[Claims] 1. A fiber web mainly composed of latently crimpable fibers and a fiber web mainly composed of fibers other than latently crimpable fibers are laminated, and crimping of the latently crimpable fibers is exhibited. The interlining material is characterized by being impregnated with resin. 2. The fiber web mainly composed of latently crimpable fibers is a unidirectional web, and the fiber web mainly composed of fibers other than latently crimpable fibers is a crossed web. Interlining described in. 3. A fiber weight / resin weight ratio of 97/3 to 7
It is 0/30, The interlining of Claim 1 or Claim 2 characterized by the above-mentioned. 4. The lower layer comprises a fiber web mainly composed of fibers other than the latently crimpable fibers.
The interlining according to any one of 3 above. 5. The interlining according to claim 1, wherein the interlining is provided with a chain stitch.