CN110552078A - Special-shaped cross section polyamide single fiber filament, covered yarn and sock leg - Google Patents
Special-shaped cross section polyamide single fiber filament, covered yarn and sock leg Download PDFInfo
- Publication number
- CN110552078A CN110552078A CN201810540479.6A CN201810540479A CN110552078A CN 110552078 A CN110552078 A CN 110552078A CN 201810540479 A CN201810540479 A CN 201810540479A CN 110552078 A CN110552078 A CN 110552078A
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- China
- Prior art keywords
- section
- fiber filament
- polyamide
- special
- single fiber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000004952 Polyamide Substances 0.000 title claims abstract description 45
- 229920002647 polyamide Polymers 0.000 title claims abstract description 45
- 239000000835 fiber Substances 0.000 title claims abstract description 29
- 230000000694 effects Effects 0.000 abstract description 5
- 230000002401 inhibitory effect Effects 0.000 abstract description 5
- 238000009987 spinning Methods 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 229920002292 Nylon 6 Polymers 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000004677 Nylon Substances 0.000 description 3
- 229920001778 nylon Polymers 0.000 description 3
- 229920002302 Nylon 6,6 Polymers 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000002074 melt spinning Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 229920000571 Nylon 11 Polymers 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41B—SHIRTS; UNDERWEAR; BABY LINEN; HANDKERCHIEFS
- A41B11/00—Hosiery; Panti-hose
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/253—Formation of filaments, threads, or the like with a non-circular cross section; Spinnerette packs therefor
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
- D01F6/60—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyamides
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
- D02G3/36—Cored or coated yarns or threads
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Socks And Pantyhose (AREA)
- Artificial Filaments (AREA)
Abstract
The invention discloses a polyamide single-fiber filament with a special-shaped cross section, wherein the titer of the single-fiber filament is 4.0-11.0 dtex; the cross section of the single fiber filament is flat, and the flatness of the flat is 2.0-4.5. After the polyamide single-fiber filament yarn is coated, the obtained coated yarn and the sock leg have good softness, high transparency and good skin-friendly feeling, and also have the effect of inhibiting the random reflection of light.
Description
Technical Field
The invention relates to a polyamide monofilament, a covering yarn and a sock leg, in particular to a polyamide monofilament with a special-shaped section and a flat cross section, a covering yarn containing the monofilament and a sock leg containing the covering yarn.
Background
Polyamide fibers and polyester fibers, which are synthetic fibers, have excellent mechanical and chemical properties, and are therefore widely used in clothing applications and industrial applications. In particular, polyamide fibers have unique flexibility and high strength, and have excellent properties in terms of color development during dyeing, heat resistance, moisture absorption, and the like, and therefore, are widely used for general clothing applications such as silk stockings, underwear, and sportswear.
Consumer demands for silk stockings are demanding comfort, smooth leg feeling, softness, and transparency.
Japanese laid-open patent publication No. 10-212601 discloses that a stocking is provided which has a good feel to the skin, a high transparency, and excellent durability by producing an extremely fine high-strength polyamide fiber by further heating and drawing a commercially available high-strength nylon yarn having an elongation of 38 to 40%. However, since the process of heating and stretching is performed, fuzz is generated at the time of additional stretching. Further, since the elongation of the obtained nylon yarn is less than 38%, there are problems such as poor high-order passability in the production process of a covered yarn and a silk stocking, poor quality of a silk stocking product, and the like.
Disclosure of Invention
The invention aims to provide a polyamide monofilament with a special-shaped cross section, which has good flexibility, high transparency, good skin-friendly feeling and the effect of inhibiting the random reflection of light, a covering yarn containing the monofilament, and a sock tube containing the covering yarn.
The technical solution of the invention is as follows:
the titer of the polyamide single-fiber filament with the special-shaped cross section is 4.0 to 11.0dtex, preferably 5.0 to 8.0 dtex; the cross section of the single fiber filament is flat, and the flatness of the flat is 2.0-4.5, preferably 2.5-3.5.
The parallelism of the two long sides of the flat shape is less than 0.600.
The invention also discloses a covered yarn containing the polyamide monofilament with the special-shaped cross section and a sock leg containing the covered yarn.
The cross section of the polyamide monofilament filament with the special-shaped section is flat, and the flatness and the fineness are further limited, so that the covered yarn and the leg of a sock containing the fiber have the characteristics of good flexibility, high transparency and good skin-friendly feeling, and simultaneously have the effect of inhibiting the light random reflection.
Drawings
Fig. 1 is a cross-sectional structure view of a polyamide monofilament filament with a profiled cross-section, wherein the first arc is two long sides parallel to each other, the third arc is two arcs tangent to the two long sides, the fifth arc is a short diameter between the two long sides, and the sixth arc is a long diameter.
Detailed Description
The cross section of the existing polyamide fiber is mostly round, triangular and football-shaped, although the elastic requirement can be met, the transparency of the manufactured covering yarn and the sock leg is not high, and the aesthetic feeling is influenced.
The invention provides a polyamide monofilament with a special-shaped section and high transparency, wherein the cross section of the polyamide monofilament is flat. The flatness of the polyamide single-fiber filament is 2.0-4.5, and the higher the flatness is, the better the transparency of a subsequent product is. However, when the polyamide monofilament has a flatness of more than 4.5, the yarn breakage is severe, and the spinning is difficult, and the production cannot be carried out. In order to ensure the productivity of the polyamide monofilament and obtain high transparency, the flatness of the polyamide monofilament is preferably 2.5-3.5.
Meanwhile, in order to obtain more excellent transparency, in a preferred embodiment of the present invention, the parallelism of the two long sides of the cross section of the polyamide monofilament is preferably 0.600 or less. That is, the distance between the two long sides of the cross section of the polyamide monofilament was kept constant. The smaller the parallelism, the better the transparency of the polyamide monofilament. If the value of the parallelism is too high, it means that the maximum value and the minimum value of the distance between the two long sides on the cross section of the polyamide monofilament are too different, and the transparency of the final polyamide monofilament becomes poor.
The monofilament fineness of the polyamide monofilament filament is 4.0-11.0 dtex. The smaller the filament number of the single filament, the softer the hand feeling of the polyamide single filament, and the higher the transparency; the larger the fineness of the monofilament, the poorer the hand feeling of the polyamide monofilament and the lower the transparency. In the invention, the filament number of the polyamide monofilament is preferably 5.0-8.0 dtex.
The type of the polyamide of the present invention is not particularly limited, and may be a conventional polyamide such as polycaprolactam (nylon 6), polyhexamethylene adipamide (nylon 66), nylon 1010, nylon 11, or the like.
When the special-shaped section polyamide single fiber filament is prepared, except for using the flat spinneret plate, other steps are the same as the common spinning steps. For example, the polyamide fiber filament of the present invention can be obtained by the steps of feeding → melting → spinning → cooling molding → oiling → stretching → winding, etc.
The invention also discloses a covered yarn which contains the polyamide monofilament with the special-shaped cross section. The method of making the covered yarn may be conventional.
The invention also discloses a sock leg, which contains the covering yarn. The manufacturing method of the sock leg can be a conventional method.
Through the design of the flatness of the cross section, the polyamide single fiber filament enables the subsequent product of the coated yarn and the leg of a stocking to have the advantages of good softness, high transparency and good skin-friendly feeling, and also has the effect of inhibiting the random reflection of light. Furthermore, the invention ensures that the subsequent product of the polyamide monofilament has more excellent transparency by limiting the parallelism of the two long sides on the cross section of the polyamide monofilament.
The test method related by the invention comprises the following steps:
(1) Flatness of
The flatness is expressed as a number obtained by dividing the maximum major axis by the maximum minor axis in the filament cross section.
(2) Degree of parallelism
The parallelism is expressed by a standard deviation STDEV of n short diameters between two parallel long sides in a single fiber filament cross section. The formula for the function STDEV is as follows:
Where x is the AVERAGE value of samples AVERAGE (number1, number2, …), and n is the sample size and the number of samples is not less than 10.
(3) Spinnability (broken thread)
the spinnability refers to the summary of broken filaments/floating filaments and filtration pressure conditions in the spinning process of the slices on a melt spinning machine; the specific characterization method is as follows (taking 10 winders for simultaneous production as an example): in the spinning process of 24 hours, if no broken yarn or floating yarn occurs, the spinnability is excellent, and the mark is very good; when 1-2 times of broken filaments/flying filaments appear in the spinning process within 24 hours, the spinnability is good, and the mark is O; when 3-5 times of broken filaments/floating filaments occur in the spinning process within 24 hours, the spinnability is medium, and the mark is delta; when 6 or more breaks/floats occurred during the spinning process for 24 hours, the spinnability was poor and marked as X.
(4) Fiber strength
The samples were measured on a tensile tester (AGS-J series manufactured by Shimadzu corporation) under the constant-speed elongation conditions in the standard test of JIS-L1013 (1999) 8.5.1. The length of the sample is 50cm, the stretching speed is 50 cm/min, the test times are 3 times, and the final result is averaged. When the fiber strength is more than 5.4cN/dtex, the fiber is judged as very good; when the fiber strength is 5.0 to 5.4 (not containing) cN/dtex, the fiber is judged as O; when the fiber strength is 4.6-5.0 (not containing) cN/dtex, the judgment is delta; when the fiber strength is less than 4.6cN/dtex, the judgment is X.
(5) Flexibility
The softness is determined by touching with hands and visually checking whether the texture of the silk stockings is clear. The specific method is that 10 persons are selected to touch and observe the test sample and then are scored, and the higher the score is, the better the flexibility is. The score is 10-9, and the product is judged as excellent; judging the score to be 8-7 minutes and judging the score to be O; judging the fraction to be delta when the fraction is 6-5 minutes; when the score is 5 points or less, the score is determined to be X.
(6) Transparency of
The transparency is determined by observing and comparing the silk stockings with the leg model by naked eyes. The specific method is that 10 persons are selected to observe the test sample and then are scored, and the higher the score is, the better the transparency is. The score is 10-9, and the product is judged as excellent; judging the score to be 8-7 minutes and judging the score to be O; judging the fraction to be delta when the fraction is 6-5 minutes; when the score is 5 points or less, the score is determined to be X.
(7) Optical random reflection
The divergence of the light was observed by the naked eye under the same light source condition. The specific method is that 10 persons are selected to observe the test sample and then are scored, and the higher the score is, the better the effect of inhibiting the light spurious reflection is. The score is 10-9, and the product is judged as excellent; judging the score to be 8-7 minutes and judging the score to be O; judging the fraction to be delta when the fraction is 6-5 minutes; when the score is 5 points or less, the score is determined to be X.
The present invention is further illustrated by the following specific examples.
Examples 1 to 7 and comparative example 1
Putting polycaprolactam (nylon 6) slices into a feed inlet of a melt spinning machine, and carrying out melting, spinning, cooling forming, oiling, stretching and winding to obtain the polyamide monofilament filament with the special-shaped section, wherein specific parameters and physical properties of the polyamide monofilament filament are shown in table 1.
Claims (6)
1. A profiled cross-section polyamide monofilament filament characterized in that: the fineness of the single fiber filament is 4.0-11.0 dtex; the cross section of the single fiber filament is flat, and the flatness of the flat is 2.0-4.5.
2. A profiled polyamide monofilament as claimed in claim 1, characterized in that: the parallelism of the two long sides of the flat shape is less than 0.600.
3. A profiled-section polyamide monofilament as claimed in claim 1 or 2, characterized in that: the fineness of the single fiber filament is 5.0-8.0 dtex.
4. A profiled-section polyamide monofilament as claimed in claim 1 or 2, characterized in that: the flatness of the flat shape is 2.5-3.5.
5. A covered yarn comprising the profiled polyamide monofilament of claim 1.
6. A sock leg containing the covered yarn of claim 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810540479.6A CN110552078A (en) | 2018-05-31 | 2018-05-31 | Special-shaped cross section polyamide single fiber filament, covered yarn and sock leg |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810540479.6A CN110552078A (en) | 2018-05-31 | 2018-05-31 | Special-shaped cross section polyamide single fiber filament, covered yarn and sock leg |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110552078A true CN110552078A (en) | 2019-12-10 |
Family
ID=68735120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810540479.6A Pending CN110552078A (en) | 2018-05-31 | 2018-05-31 | Special-shaped cross section polyamide single fiber filament, covered yarn and sock leg |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110552078A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07157902A (en) * | 1993-10-15 | 1995-06-20 | Toray Ind Inc | Panty hose and its production |
| JP2002146626A (en) * | 2000-11-02 | 2002-05-22 | Asahi Kasei Corp | Polyamide fiber |
| JP2003041445A (en) * | 2001-07-23 | 2003-02-13 | Toray Ind Inc | Covered elastic yarn and stockings using the same |
| JP2003293202A (en) * | 2002-03-29 | 2003-10-15 | Toray Ind Inc | Stocking |
| JP2005048309A (en) * | 2003-07-31 | 2005-02-24 | Toray Ind Inc | Polyamide fiber, polyamide woven fabric and textile product composed of the same |
| JP2006265810A (en) * | 2005-02-28 | 2006-10-05 | Toray Ind Inc | Stockings |
| JP2007092262A (en) * | 2005-09-30 | 2007-04-12 | Toray Ind Inc | Polyamide filament |
| JP2012162826A (en) * | 2011-02-07 | 2012-08-30 | Toray Ind Inc | Polyamide fiber having flat multi-lobe cross section |
| CN107075741A (en) * | 2014-11-12 | 2017-08-18 | 东丽株式会社 | Superfine high-tenacity polyamide multifilament and use its covering yarn, stocking, fabric |
| JP2018053405A (en) * | 2016-09-30 | 2018-04-05 | 東レ株式会社 | Flat cross section polyhexamethylene adipamide fiber and fiber product |
| CN208844231U (en) * | 2018-05-31 | 2019-05-10 | 东丽合成纤维（南通）有限公司 | A kind of odd-shaped cross section Polyamide filaments long filament, wrap yarn and the stocking leg |
-
2018
- 2018-05-31 CN CN201810540479.6A patent/CN110552078A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07157902A (en) * | 1993-10-15 | 1995-06-20 | Toray Ind Inc | Panty hose and its production |
| JP2002146626A (en) * | 2000-11-02 | 2002-05-22 | Asahi Kasei Corp | Polyamide fiber |
| JP2003041445A (en) * | 2001-07-23 | 2003-02-13 | Toray Ind Inc | Covered elastic yarn and stockings using the same |
| JP2003293202A (en) * | 2002-03-29 | 2003-10-15 | Toray Ind Inc | Stocking |
| JP2005048309A (en) * | 2003-07-31 | 2005-02-24 | Toray Ind Inc | Polyamide fiber, polyamide woven fabric and textile product composed of the same |
| JP2006265810A (en) * | 2005-02-28 | 2006-10-05 | Toray Ind Inc | Stockings |
| JP2007092262A (en) * | 2005-09-30 | 2007-04-12 | Toray Ind Inc | Polyamide filament |
| JP2012162826A (en) * | 2011-02-07 | 2012-08-30 | Toray Ind Inc | Polyamide fiber having flat multi-lobe cross section |
| CN107075741A (en) * | 2014-11-12 | 2017-08-18 | 东丽株式会社 | Superfine high-tenacity polyamide multifilament and use its covering yarn, stocking, fabric |
| JP2018053405A (en) * | 2016-09-30 | 2018-04-05 | 東レ株式会社 | Flat cross section polyhexamethylene adipamide fiber and fiber product |
| CN208844231U (en) * | 2018-05-31 | 2019-05-10 | 东丽合成纤维（南通）有限公司 | A kind of odd-shaped cross section Polyamide filaments long filament, wrap yarn and the stocking leg |
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