JPH11200106A - Brassiere cup material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prepare a brassiere cup material capable of making a beautiful bust silhouette and excellent in air permeability, shaperetaining properties, washing handling ability, pleasant texture and wearing feeling by constructing of a specific 3 layer structural body. SOLUTION: This brassiere material consists of a three layer structural body (preferably, having 2-6 mm thickness and 4-13% degree of fiber loading) comprising two knitted fabrics in two sides and connecting yarns having 4-7 denier monofilament and 20-50 denier degree of fineness. It is preferable to use cellulose-based long fibers having 50-150 denier as yarns of at least one knitted fabric of the skin side in two knitted fabrics in the two sides.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a brassiere cup material. More specifically, a three-layer knitted fabric,
The present invention relates to a bra cup material that has a shape retention and a voluminous feel that allows the bust to withstand the external pressure of washing and the like, and that can be worn comfortably while suppressing stuffiness and sweat during summer wear.

[0002]

2. Description of the Related Art Conventionally, in order to give a brassier cup material a sense of volume, a nonwoven fabric formed by laminating short fibers or the like is laminated to form a pad material, and a knitted fabric such as a tricot is laminated as a surface material by sewing. What was used is used. However, when a conventional nonwoven fabric is used as a pad material, heat, sweat or water vapor generated from the body accumulates in the laminated portion of the nonwoven fabric, and gives a wearer an uncomfortable feeling such as stuffiness especially in summer. In addition, since the nonwoven fabric is laminated, there is a problem that the cup loses its shape when rubbed by washing or the like. That is, there was no brassier material which had both the shape-retaining property and the contradictory functions of volume and wear.

Japanese Patent Application Laid-Open No. 1-177211 discloses that the upper part of the cloth constituting the cup is formed of transparent cloth, the lower part including the nipple is formed of non-transparent cloth, and the upper part is formed of non-transparent cloth. Brassieres have been proposed which are formed using a fabric obtained by knitting and weaving the fabric and the lower fabric as an integral fabric.However, it is possible to prevent the nipple from being transparent when worn and to reduce the sewing process and sewing cost. However, the feeling of wearing and the shape retention were not sufficient, and there was a problem that the feeling of stuffiness and wetness occurred, and the shape retention of the bust portion was low and insufficient.

[0004]

SUMMARY OF THE INVENTION The present invention solves the above problems, and when used as a brassiere cup material, has excellent shape retention and voluminousness of the bust portion, and does not lose its shape even after repeated washing. Good handling for washing, and radiating heat generated from the body, and sweat, water vapor generated from the body are quickly absorbed, absorbed, and radiated.
An object of the present invention is to provide a brassiere cup material in which discomfort such as stuffiness and wetness is improved.

[0005]

Means for Solving the Problems The inventors of the present invention have conducted intensive studies in order to develop a brassiere cup material excellent in wearing feeling and shape retention properties. It has been found that a three-layer structure knitted fabric composed of connecting yarns connecting knitted fabrics is suitable for the purpose, and the present invention has been completed based on this finding.

[0006] That is, the present invention is a brassiere cup material having a three-layer structure including two front and back knitted fabrics and a connecting yarn for connecting the two knitted fabrics. The three-layer structure composed of the two knitted fabrics and the connecting yarns connecting the two knitted fabrics according to the present invention is manufactured by a knitting machine having two needle beds. In knitting and warp knitting, it refers to a three-layer knitted fabric obtained by a double Russell knitting machine or a double tricot knitting machine. Means

As the three-layer structure used in the present invention, a three-layer structure using a double Russell knitting machine is the most inexpensive and can be easily produced. In the present invention, the brassier cup material is composed of a three-layer knitted fabric, and the constituent yarns (knitting yarns) of the knitted fabric of each layer include polyester fibers, polyamide fibers, cellulose-based regenerated fibers, polyacrylonitrile fibers, Examples thereof include natural fibers such as cotton, silk, and wool, and mixed fibers thereof, and are not particularly limited.

[0008] Polyester or other synthetic fibers are preferred in consideration of the shape retention, volume, washing handleability, and durability of the bra cup material. However, in consideration of the wearing comfort such as sweat absorption, moisture absorption and heat dissipation during perspiration, a bra is preferred. Preferably, at least the skin side yarn of the cup material uses cellulosic long fibers. It is preferable that the cellulosic long fiber used in the present invention has a fineness of 50 to 150 denier. If the fineness of the cellulosic long fiber is less than 50 denier, knitted fabric properties such as knitting properties and strength are reduced. On the other hand, if the fineness is greater than 150 denier, the texture of the knitted fabric becomes hard, and it becomes difficult to use it as a brassier cup material. Such cellulosic long fibers are excellent in hygroscopicity, water absorption, and heat dissipation, so when wearing a bra having a bra cup material using cellulosic long fibers on the skin side, sweat or water vapor generated from the body Can be quickly sucked up and removed from the skin. Sweat, water vapor, and heat are passed through the intermediate layer made of the connecting yarn and released to the outside from the surface layer.There is no discomfort such as stuffiness or wetness, and there is a sense of contact cooling when worn. It has a moderate feeling of shinyari, so it feels cool and comfortable when worn at high temperatures such as in summer. Furthermore, it has good sliding with the skin, is easy to put on, has good touch, the surface of the knitted fabric is glossy and rich in aesthetics. Excellent wearing feeling and appearance quality.

As the cellulosic long fiber used in the present invention, cupra, viscose rayon, polynosic rayon and the like can be mentioned, but cupra is particularly preferred.
The number of single yarns (filaments) and the cross-sectional shape are not particularly limited. The connecting yarn of the three-layer knitted fabric used for the brassiere cup material of the present invention preferably has a single yarn fineness of 4 to 7 denier and a fineness of 20 to 50 denier. If the single yarn fineness is less than 4 denier, the compression recovery property tends to be small and the shape retention property is poor. If it exceeds 7 denier, not only the repulsion is large and there is a rough and hard feeling, but also the ends of the single yarns are irritating to the skin, causing discomfort such as tingling. on the other hand,
If the fineness is less than 20 denier, knitting becomes poor and the knitted fabric strength is low. On the other hand, if it exceeds 50 denier, the surface roughness of the knitted fabric becomes large.

The thickness of the three-layer knitted fabric used for the brassiere cup material of the present invention is 2 to 6 mm, and the fiber filling rate is 4 to 13%.
It is preferred that If the thickness is less than 2 mm, a good voluminous feeling cannot be imparted to the brassiere cup material, and the bust cannot be beautifully shaped. If it exceeds 6 mm, the cushioning property is excellent,
It becomes bulky and gives too much volume to the bust, thus losing the natural bulge of the bust. If the fiber filling ratio is smaller than 4%, the density of the front and back knitted fabric becomes coarse,
Therefore, the density of the connecting yarn connecting the front and back knitted fabric also becomes coarse,
The spacing between the front and back knitted fabrics cannot be maintained, and a sufficient volume feeling cannot be obtained. In addition, when it exceeds 13%, the density of the front and back knitted fabric becomes dense, and the density of the connecting yarn also becomes dense, so that the space necessary for smoothly radiating the heat generated from the body to the outside is reduced, Poor ventilation, heat build-up, and poor wearing feeling.

The connecting yarns may be arranged at an angle or intersect in an X-shape as long as the spacing between the front and back knitted fabrics is maintained and the softness is not impaired. Further, the connecting yarn may form a loop stitch in the front and back two-layer knitted fabric, or may be hooked with a tack structure to the front and back two-layer knitted fabric.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in more detail with reference to Examples and Comparative Examples. Physical property evaluation was obtained by the following method. (1) Heat dissipation The entire hot plate is 12 cm square, of which the measuring hot plate is 10 cm
Using a thermolab II (manufactured by Kato Tech Co., Ltd.) having a guard hot plate with a width of 1 cm around the corner, a 15 cm square back side of the sample (bra cup The surface that will be the human body side) is placed in contact with it, and a 3 mm thick styrofoam frame with a 15 cm square hole and a 10 cm square hole in the center is placed and fixed with drafting tape (Nichiban Co., Ltd.) from above. Read the appropriate scale value from the wind speed scale and the calibration curve calibration table of the wind speed so that the wind speed becomes 0.2 m / sec, and adjust the scale to that value.
The required heat amount W1 (W / m ² ·
° C).

Next, a filter paper of 10 cm square is placed on a hot plate at 30 ° C. at the center of the hot plate, and 2.5 ml of water is impregnated into the entire filter paper. A 15 cm square back side of the sample is placed on top of it, and a foaming styrofoam frame similar to that described above is placed thereon, and a drafting tape (Nichiban Co., Ltd.) is placed from above.
And fix the wind speed from the wind speed scale and wind speed calibration curve calibration table.
The appropriate scale value was read so as to be 2 m / sec, and the scale was adjusted to that value, and the required heat amount W2 (W / m ² · ° C.) when the hot plate was kept at 30 ° C. was measured.

W1 represents the amount of heat radiation when the skin is dry, that is, not sweating, and W2 is the amount of heat radiation when the skin is wet, that is, sweating. It is. In order to eliminate discomfort such as stuffiness and heat buildup during wearing, W1 is preferably at least 32 W / m ² · ° C, and W2 is preferably at least 52 W / m ² · ° C. (2) Contact cold / hot sensation Accurate and rapid thermophysical property measurement device (KES-F7-Thermolab 2 manufactured by Kato Tech Co., Ltd.) under an environment of 20 ° C and 65%
Sample (7c) on a copper plate (heat storage plate) that stores heat
m × 7 cm), and the peak value (maximum heat flow rate Qmax) of the amount of heat transferred to the sample is measured. Set the heat source plate (5cm × 5cm) to room temperature plus 10 ℃,
It is brought into contact with a heat storage plate (3 cm x 3 cm) to give heat.

Next, the sample is placed on a styrene foam sample table (10 cm × 10 cm), a heat storage plate is quickly placed thereon, the Qmax value is read, and the Qmax value is calculated from the average value of the three measurement samples by the following equation. I do. The set pressure at this time is 10 g / cm ² . There is a contact sensation larger the peak value, is to have a cooling sensation when worn 100W / m ² ·
sec.

Contact cold / hot feeling = Qmax × 10000/10
(W / m^Two・ ℃) (3) Thickness Use KES-FB3 compression tester manufactured by Kato Tech Co., Ltd.
And place the sample in an area of 2 cm ^TwoBetween copper plates with a circular surface (compression
Compress at a speed of 20 μm / sec) and compressive force P = 6.0 g
/ Cm^TwoMeasure the thickness of the sample at. (4) Fiber filling ratio Calculated by the following formula.

Fiber filling rate (%) = weight / ｛(thickness × (ratio
Weight a × mixture ratio a + specific gravity b × mixture ratio b + ‥‥)｝ 100 (5) Air permeability JIS-L-1096, 1018 Air permeability test method (Method A)
(Air volume) according to the Frazier tester. Stuffy
100cc / cm to eliminate feeling and heat buildup^Two/ S
ec or more is preferable. (6) Pilling JIS-L-1076 Pilling test method A method (ICI
Ring test method). (7) Dryability The sample (15 cm × 15 cm) was immersed in water for 30 minutes, and then centrifuged.
After water (centrifugal dehydrator 3500 rpm × 5 minutes), 20 ° C.
Hang it in a 65% RH environment and measure the change in water content over time.
The time it takes for the water content to reach equilibrium, ie
The time required for drying was measured. (8) The maximum humidity in the bra cup is 30 ° C and 65% rh environment, manufactured by Kyoto Electronics Industry Co., Ltd.
Using a thermal manikin, a bra
The humidity in the rajer cup was measured. Thermal mannequin
The chest skin temperature was set to 30 ° C and the chest of the thermal manikin.
Cup-shaped moisture absorption conditioned at 30 ° C and 100% RH
Attach the filter paper and make a bra cup on it
Sample and brassier lace
And remove the humidity sensor
It was attached to the center of the inside of the cap. More thermal mannequin
To wear a 100% polyester long sleeve blouse
Measure the change over time of the humidity inside the rajer cup and determine the maximum humidity.
I asked. (9) Feel using KES-SE surface property tester manufactured by Kato Tech Co., Ltd.
Sample and artificial leather (lamousse, suede type)
Is measured. Load is 25g / cm^TwoIt is.
Excellent feel when the surface friction coefficient is 0.75 or less
Having. (10) Volume sense Use KES-FB3 compression tester manufactured by Kato Tech Co., Ltd.
And place the sample in an area of 2 cm ^TwoBetween copper plates with a circular surface (compression
Compression at a speed of 20 μm / sec)
The amount of shrinkage and compression recovery were measured. Have a sense of volume
For compression, the compression stiffness is 0.8 or more and the compression work is 1.5 g
fcm / cm^TwoBelow, 65% or more of compression recovery is preferred.
New (11) Shape retention The sample is sewn into a brassiere cup and brassiere lace
(With the cup removed from the commercial product)
JIS-L-0217 Product washing test method (household laundry
Evaluation was carried out according to the mechanical method 103). Changes due to washing (income
○ without shrinkage, wrinkles, shape loss, change in hand
Those that have changed, those that do not withstand wearing
It evaluated as x.

[0018]

Example 1 A double raschel knitting machine having two rows of needle beds of 24 gauge was used, and one fiber yarn was formed on the front and back knitted fabrics.
A 20-denier 60-filament cupra fiber was used, and two 30-denier 6-filament polyester fibers were drawn together as a connecting yarn to prepare a 3 mm-thick three-layer knitted fabric. After hot water relaxing treatment of the obtained knitted fabric at 60 ° C. for 10 minutes, presetting is performed at 180 ° C. for 30 seconds.
After applying the water-absorbing finish and the soft finish,
A final set of 30 seconds was performed. Table 1 shows the results.
Shown in

[0019]

Example 2 A 3 mm-thick knitted fabric having a thickness of 3 mm in the same manner as in Example 1, except that a mixed yarn of polyester and cotton 80 / -S twin yarn was used for the fiber yarn forming the back layer knitted fabric. Created the earth. Finishing was performed in the same manner as in Example 1. Table 1 shows the results.

[0020]

Example 3 The same method as in Example 1 except that a 50-denier, 30-filament, polyester fiber W-shaped cross section was used for the fiber yarn forming the knitted fabric of the back layer, and the thickness was 2 mm.
The three-layer structure knitted fabric was made. Finishing was performed in the same manner as in Example 1. Table 1 shows the results.

[0021]

Comparative Example 1 A method similar to that of Example 1 except that 30 denier and 24 filament cupra fibers were used for the fiber yarn forming the knitted fabric of the back layer, and 10 denier monofilament polyester fiber was used for the connecting yarn. Produced a three-layer knitted fabric having a thickness of 3 mm. Finishing was performed in the same manner as in Example 1. Table 1 shows the results.

[0022]

Comparative Example 2 The same procedure as in Example 1 was carried out except that the fiber yarns forming the knitted fabric of the back layer were made of 250 denier 60 filament cupra fiber and the connecting yarn was made of 75 denier 30 filament polyester fiber. 8mm thick by method
The three-layer structure knitted fabric was made. Finishing was performed in the same manner as in Example 1. Table 1 shows the results.

[0023]

[Comparative Example 3] When knitting a smooth structure of 50-denier 30-filament polyester fiber using a 32-gauge double circular knitting machine, another guide is installed at the same yarn feeder, and only a 50-denier 30-filament cupra is provided on the dial side. The fibers were fed, and the polyester fiber and the cupra fiber were plated and knitted to prepare a three-layer knitted fabric having a polyester surface and a cupra inside. Finishing was performed in the same manner as in Example 1. Table 1 shows the results.

[0024]

[Comparative Example 3] A nonwoven fabric formed by laminating polyester short fibers is used as a pad material, and a tricot knitted fabric of a blend of polyester and cotton is used on the skin side, and a lace fabric made of 100% nylon is used on the outside. Was used.

[0025]

[Table 1]

[0026]

The brassiere cup material of the present invention positively dissipates heat generated from the body, has a cool feeling of contact, has high air permeability, and has a low maximum humidity in the brassiere, as compared with conventional ones. It is comfortable and has a refreshing feeling with less stuffiness and heat. Furthermore, since it has good drying properties, it has excellent washing handling properties, and since it has excellent touch, volume and shape retention, it is possible to create a comfortable wearing feeling and a beautiful bust silhouette.

Claims (3)

[Claims] 1. A brassiere cup material having a three-layer structure comprising two front and back knitted fabrics and a connecting yarn for connecting the two knitted fabrics. 2. The brassiere cup material according to claim 1, wherein 50 to 150 denier cellulosic long fiber is used as the yarn on at least the skin side of the two knitted fabrics. 3. A three-layer knitted fabric comprising 4 to 7 denier single yarn fibers and a 20 to 50 denier fineness as a connecting yarn, and the three-layer knitted fabric has a thickness of 2 to 6 mm.
The brassiere cup material according to claim 1, wherein the fiber filling ratio is 4 to 13%.