JP3241517B2 - Composite nonwoven fabric and interlining using the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composite nonwoven fabric useful as a base material for clothing interlining, medical cataplasms, bandages and the like.

[0002]

2. Description of the Related Art There are various materials such as interlining for clothes which can follow moderate elongation of a surface material and cataplasms which can follow bending and stretching of arms and feet. The price is too high for woven and knitted fabrics using
Non-woven fabrics using fibers with latent crimpability and the like have high elasticity, but have the disadvantage of insufficient strength.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide a stretchable nonwoven fabric which can freely design stretch characteristics as desired in a distribution stage or a processing stage and can impart a proper strength. It is.

[0004]

SUMMARY OF THE INVENTION The present invention relates to a composite nonwoven fabric obtained by, for example, chain-stitch knitting a latent crimped yarn as a warp knitting yarn on a nonwoven fabric. It is a composite nonwoven fabric in which latent crimped yarn is knitted as a yarn. The method for producing a composite nonwoven fabric of the present invention is as follows: a latently crimped yarn is laid on the nonwoven fabric as a warp knitting yarn, for example, after chain stitch knitting, in the warp direction by steam or the like.
For example, after performing a heat shrinkage treatment of about 40% or more, heat setting is performed while applying a tension of less than 40% in the vertical direction. Can be obtained. This elastic composite nonwoven fabric further
Post-processing such as dyeing processing, dot processing of an adhesive resin, and slit processing may be performed.

[0005] The nonwoven fabric used in the present invention may be manufactured by any known web forming method such as a dry method, a wet method, and a melt spinning method. Any method such as a hydroentanglement method may be used, but a heat-sealed nonwoven fabric or a nonwoven fabric entangled with a water stream obtained by bonding a web of a dry method by a point-like heat fusion method from the viewpoint of a texture suitable for interlining of clothes, etc. Particularly preferred.

The latently crimped yarn used as the warp knitting yarn of the present invention is a bonded type or core-sheath composed of components having different molecular weights, melting points, crystallinities, etc., even if the resin is a different component or the same component. It is preferable to use a yarn composed of a conjugated fiber of the type, which is crimped by heat shrinkage treatment with steam or the like, in particular, a yarn having a loop-shaped crimp and having elasticity.

The heat shrink treatment is preferably carried out at 80 to 150 ° C. by dry heat, hot water, steam treatment or the like.
Steaming at 120 ° C. is particularly preferred. Heat setting, when applying tension, there are tenter method, cylinder method, etc., pass the composite non-woven fabric through the nip rolls before and after that, the speed of the nip roll 1.0-2.0 times the former with respect to the former, More preferably, 1.0-1.
It is particularly preferred that it be 5 times. The heat setting is preferably performed at 110 to 260 ° C.,
It is particularly preferred to carry out at 00 ° C. When a large tension is not applied at the time of heat setting, a stretchable nonwoven fabric having a large stretchability is obtained, which is suitable for a poultice, a bandage, and the like.

Before and after the heat shrinking or heat setting treatment, the material may be treated with a softening agent such as silicon or a water repellent such as a fluorine resin. The heat-set composite nonwoven fabric can be dot-processed with a thermoplastic adhesive such as polyamide or polyester at 3 to 25 g / m ² , particularly 5 to 15 g / m ² , if necessary. This stretchable composite nonwoven fabric is superior in stretchability, soft feeling, versatility, etc. as compared with a conventional nonwoven fabric having a warp knit without crimping. No vertical or horizontal streaks. The degree of elasticity can be controlled by the conditions of heat shrinkage and heat setting during production. In addition, the advantage in the process is higher than that in the case where the actual crimped yarn is used, and various elasticity can be obtained by using the heat-shrinkable composite non-woven fabric under the heat setting conditions later. In addition, as a base material such as a poultice, a crimp is developed after applying the agent to a material that does not exhibit crimp, and a stretchable cataplasm can be obtained.

Next, the present invention will be specifically described with reference to examples.

【Example】

Example 1 65% by weight of 6 nylon fibers (melting point: 215 ° C.) having a fineness of 1.2 denier and a fiber length of 47 mm, and a fineness of 1.3 denier,
Polyester fiber with a fiber length of 38 mm (melting point 265 ° C) 3
5% by weight and carding to produce a web. This web was partially heat-sealed in a dot-like manner by an embossing roll at a temperature of 220 ° C. to produce a heat-sealed nonwoven fabric having a basis weight of 25 g / m ² . A 30 denier polyester latently wound knitting yarn is wrapped on this nonwoven fabric by a Russell knitting machine (Karlmeier R).
Using S3MSU-V), 18-gauge chain stitch knitting was performed to prepare a composite nonwoven fabric having a basis weight of 33 g / m ² .

Example 2 The nonwoven fabric of Example 1 was subjected to a steam treatment at 110 ° C. for 5 seconds to be contracted by 40% in the longitudinal direction, thereby producing a stretchable composite nonwoven fabric having a basis weight of 47 g / m ² .

Example 3 The stretchable composite nonwoven fabric prepared in Example 2 was heat-set at 160 ° C. for 1.5 minutes while applying a nip roll speed of 1.3 times and applying a tension of 30% to give a basis weight of 3
An elastic composite nonwoven fabric of 5 g / m ² was produced.

Example 4 The stretchable composite nonwoven fabric of Example 3 was subjected to dot processing with a low-melting polyamide at 335 / inch ² at 11 g / m ² to prepare an adhesive interlining having a basis weight of 46 g / m ² . The physical properties of the adhesive interlining are as shown in Table 1.

[0013]

[Table 1] The physical properties of the interlining were evaluated by the KES test method. EMT
Is the tensile elongation at constant load (unit:%), B is the bending stiffness per unit length (unit: gf · cm ₂ / c)
m) and G are shear stiffness per unit width (unit: gf / c)
m · degree). Note that KES
In (1), the interlining alone was evaluated, and its EMT was the elongation under a load of 50 g. In KES (2), the EMT was evaluated using a composite cloth of interlining and a surface material (wool tropical).
Elongation under a load of 00 g.

Example 5 A composite nonwoven fabric was produced in the same manner as in Example 1 except that denbitch stitch knitting was performed instead of chain stitch knitting. This composite nonwoven fabric was subjected to a steam treatment at 110 ° C. for 5 seconds to shrink it by 20% in the vertical direction, thereby producing a stretchable nonwoven fabric having a basis weight of 51 g / m ² . The stretchable composite nonwoven fabric was heat-set at 160 ° C. for 1.5 minutes while increasing the nip roll speed by 1.1 times and applying 10% tension, and the basis weight was 39 g.
/ M ² was prepared. Dot processing of this stretchable composite nonwoven fabric with a low-melting polyamide is performed at 335
/ Inch square, 12 g / m ² , to produce an adhesive interlining with a basis weight of 51 g / m ² . Table 2 shows the physical properties of the obtained adhesive interlining.

[0015]

[Table 2]

Example 6 A polyester fiber having a fineness of 0.8 denier and a fiber length of 38 mm (melting point: 265 ° C.) was carded to produce a web. The web is entangled by hydroentanglement, and the basis weight is 25 g.
/ M ² was prepared. Using a Russell knitting machine (RS3 MSU-V, manufactured by KARL MAYER), a 30 denier polyester latently knitted yarn is knitted on this nonwoven fabric in an 18-gauge chain stitch manner using a Russell knitting machine to obtain a basis weight of 33 g / m ^2. Was prepared. This composite nonwoven fabric is subjected to a steam treatment at 110 ° C. for 5 seconds, and is subjected to 40 mm in the longitudinal direction.
% Shrinkage to produce an elastic composite nonwoven fabric having a basis weight of 47 g / m ² . The stretchable composite non-woven fabric is applied with a nip roll speed of 1.3 times and a tension of 30%.
Heat setting was performed at 0 ° C. for 1.5 minutes to produce a stretchable composite nonwoven fabric having a basis weight of 35 g / m ² . This stretchable composite nonwoven fabric was subjected to dot processing with a low-melting polyamide at 335 / inch ² at 11 g / m ² to produce an adhesive interlining with a basis weight of 46 g / m ² . The physical properties of the adhesive interlining are as shown in Table 3.

[0017]

[Table 3]

COMPARATIVE EXAMPLE 1 The composite nonwoven fabric of Example 1 was used without tension,
This was heat-set at 0 ° C. for 1.5 minutes to produce a composite nonwoven fabric having a basis weight of 33 g / m ² . Dot processing was performed on this composite nonwoven fabric in the same manner as in Example 4 to produce an adhesive interlining having a basis weight of 44 g / m ² . Table 4 shows the physical properties of the obtained interlining.

[0019]

[Table 4]

Comparative Example 2 Density stitch knitting of Example 5 was carried out, and this composite nonwoven fabric was heat-set at 160 ° C. for 1.5 minutes without steam treatment and without tension during heat setting to obtain a basis weight of 37 g / m 2. A composite nonwoven fabric of No. ² was produced. Dot processing was performed on this composite nonwoven fabric in the same manner as in Example 4 to obtain a basis weight of 4
An adhesive interlining of 8 g / m ² was produced. Table 5 shows the physical properties of the obtained adhesive interlining.

[0021]

[Table 5] Comparative Example 3 The hydroentangled nonwoven fabric of Example 6 was subjected to chain stitch knitting, and this composite nonwoven fabric was heat-set at 160 ° C. for 1.5 minutes without steam treatment and without tension during heat setting, and the basis weight was 33 g. / M ² was prepared. Dot processing was performed on this composite nonwoven fabric in the same manner as in Example 4 to produce an adhesive interlining having a basis weight of 44 g / m ² . Table 6 shows the physical properties of the obtained bonded interlining.

[0022]

[Table 6]

As is apparent from the above results, the same HM
Comparing Example 4 with Comparative Example 1, the EMT representing the elongation of the interlining was such that when the interlining alone was used, the base fabric was broken in the horizontal direction and measurement was impossible, but the EMT in the vertical direction was not measured. It becomes clear that elongation was increased. Further, in the case of the composite cloth with wool tropical, the EM of
It can be seen that T increased in the vertical direction and the elongation was given. It can be seen that a certain degree of elongation was also given in the lateral direction. In Example 4, the B value representing the bending of the interlining is smaller in the vertical direction for both the interlining simple substance and the composite cloth, but is larger in the horizontal direction. Further, the G value representing the shear of the interlining is smaller in the vertical and horizontal directions in the interlining single and composite in Example 4;
You can see that it has become soft. K of Example 5 in which denvis stitch was inserted, Example 6 in which chain stitch was inserted in the base fabric of the water entanglement, and Comparative Examples 2 and 3 corresponding thereto.
When the ES (interlining + wool tropical) is compared, it can be seen that it became soft as in the case of Example 1.

[0024]

According to the present invention, a stretchable nonwoven fabric having excellent texture, surface smoothness, and stretchability can be obtained. In particular, since the stretchable effect is large, moldability and shape retention are excellent. In addition, the composite nonwoven fabric can be freely manufactured according to the purpose because the elasticity can be freely controlled by appropriately designing the conditions such as the heat shrinkage treatment condition or the tension at the time of heat setting. Not only at the maker stage but also at the processing stage of the user, it is possible to obtain a stretchable nonwoven fabric having the characteristics desired by the user. When the stretchable composite nonwoven fabric of the present invention is used as an interlining, drapeability is high and low modulus (5 to 15%)
And the knitting yarn has an excellent effect of increasing strength and excellent surface abrasion. When used as a pulp material, it has high elasticity and a soft texture, so that it has a high ability to follow the movement of the skin, which is preferable.

──────────────────────────────────────────────────続 き Continuation of the front page (51) Int.Cl. ⁷ Identification symbol FI // D06C 7/02 D06C 7/02 (56) References JP-A-4-185747 (JP, A) JP-A-4-102413 (JP, A) JP-A-61-89366 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) D04H 1/00-18/00 D05C 1/00-17/02 D04B 21 / 00-21/20

Claims (5)

(57) [Claims] Claims: 1. A composite nonwoven fabric which has no weft in the nonwoven fabric and has a latently crimpable warp knitting yarn.
After the heat shrinkage in the vertical direction,
Heat set with tension less than shrinkage
A stretchable composite non-woven cloth characterized by: 2. The heat shrinkage of not less than 20%.
The stretchable composite nonwoven fabric according to claim 1. 3. A latently crimpable yarn is warp knitted on a non-woven fabric without a weft, and subjected to a heat shrink treatment in the warp direction, and then in the warp direction.
A method for producing a stretchable composite nonwoven fabric, wherein heat setting is performed while applying a tension less than the shrinkage ratio of the heat shrinkage treatment . 4. The heat shrinkage of not less than 20%.
The method for producing a stretchable composite nonwoven fabric according to claim 3 . 5. An interlining made of the stretchable composite nonwoven fabric according to claim 1 or 2 .