CN101555635A - Low-melting point hot adhesion fiber and method for producing same - Google Patents
Low-melting point hot adhesion fiber and method for producing same Download PDFInfo
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- CN101555635A CN101555635A CNA2009100296334A CN200910029633A CN101555635A CN 101555635 A CN101555635 A CN 101555635A CN A2009100296334 A CNA2009100296334 A CN A2009100296334A CN 200910029633 A CN200910029633 A CN 200910029633A CN 101555635 A CN101555635 A CN 101555635A
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Abstract
The invention relates to a method for producing low-melting point hot-adhesion fiber, in particular to low-melting point co-polyamide and a method for producing hot adhesion fiber, belonging to the field of chemical engineering, textile and chemical fiber. According to the technical scheme provided by the invention, the hot adhesion fiber is made of linear co-polyamide (buyable) with the melting point being 80 to 150 DEG C and has good spinning performance, wherein, the co-polyamide is mainly formed by co-polymerizing lactam, aliphatic amino acid, aliphatic diamine and aliphatic dibasic acid on the basis of the conventional method, particularly, the co-polyamide with the melting point being 80 to 150 DEG C mainly comprises the following components by the general structural formula: {[CO(CH2)x CONH(CH2)y NH]m[CO(CH2)z NH]n}, wherein, x, y and z are random integers from 4 to 18; and m and n are positive integers. The invention can simplify the production process, reduce the product cost and improve the product quality.
Description
Technical field
The present invention relates to a kind of production method of low-melting point hot adhesion fiber, the production method of specifically a kind of low-melting-point copolyamides and heat bonding filament fiber thereof the invention belongs to chemical industry, weaving, chemical fibre field.
Technical background
Heat-bondable fiber has the characteristics similar to chemical adhesive, but than chemical adhesive environmental protection more, more easy-to-use.The current raw material that is used to produce low-melting point hot adhesion fiber mainly contains: TPO such as PE, PP, EVA etc., this series products uses in the nonwoven fabric series products in a large number, wherein EVA is main is to use with the form of hot melt adhesive, this series products is because its molecule Semi-polarity group is less, its bonding strength is lower, fastness to washing is poor, so at bonding of textiles, particularly seldom use in yarn bonding.Be exactly low-melting point polyester class heat-bondable fiber and low melting point polyamide class heat-bondable fiber in addition, these two kinds of fibers all adopt its copolymer to produce, molecule Semi-polarity group is more relatively, its heat bonding intensity and washing fastness all are better than polyolefin product, and wherein especially with polyamide-based low-melting point hot adhesion fiber, since its bonding strength height, good toughness, characteristics such as washability is good receive praises from customers.But these low-melting fibers adopt composite spinning technology more, complex manufacturing, and the production cost height, in use, because the existence of core, fiber is hot melt fully, influences the cohesiveness of product; Particularly for polyamide-based product, what produced during coiling is loose, has a strong impact on ordinary production, generally adopts secondary typing processing, complex process, and yield rate is low, inefficiency, production cost height.
Summary of the invention
The objective of the invention is to design a kind of low-melting point hot adhesion fiber and production method thereof, with simplified processing process, reduce product cost, improve the quality of products.
According to technical scheme provided by the invention, described low-melting point hot adhesion fiber is a kind of filament fiber that is formed at 80～150 ℃ copolyamide melt-spinning by fusing point.
The line density of the tow of described filament fiber is at 20～250dtex, and the intensity of filament fiber is at 〉=1.5cN/dtex, and the percentage elongation of filament fiber is 30～150%, and the fusing point of filament fiber is at 80～150 ℃.
Described copolyamide is a kind of a kind of copolyamide that forms with lactam, the acid of aliphatic amido, aliphatic diamine and aliphatic dibasic acid copolymerization; The fusing point of described copolyamide is at 80～150 ℃;
The general structure of described copolyamide is:
{[CO(CH
2)
xCONH(CH
2)
yNH]
m[CO(CH
2)
zNH]
n}，
X wherein, y, z are the arbitrary integers in 4～18, m, n are positive integers.
The production method of described low-melting point hot adhesion fiber is characterized in that:
Copolyamide carried out 8～24 hours vacuumize under 50～100 ℃ temperature;
After melt extruding,,, and then enter second drawing roller of 2000～5000m/min through dried copolyamide by first drawing roller of 300～2500m/min through the spinnerets ejection;
Through the filamentary tow of carrying out between two drawing roller forming after 1.5～4.5 times the drawing-off, final winding speed is at 2000～5000m/min; The temperature of two drawing roller is controlled at 50～100 ℃.
The raw material of binder fiber of the present invention has adopted a kind of fusing point at 80～150 ℃ linear copolyamide, and this linear copolyamide can outsourcing, and has good spinning technique performance.
Different for low-melting point hot adhesion fiber according to its fusing point of difference of application scenario, mostly at 80～150 ℃.Fusing point is lower than 80 ℃, and its adhesive fastness is not enough, easily produces and peels off, and serviceability is limited; Fusing point is higher than 150 ℃, must carry out high temperature adhesives, and energy consumption is big, process equipment is limited to some extent, so made its fusing point of low-melting point hot adhesion fiber of the present invention preferably is controlled at 90～130 ℃ at 80～150 ℃.
The used copolyamide of the present invention needs vacuumize before carrying out spinning, its vacuum drying temperature is controlled at 60～100 ℃, vacuum 〉=0.1Mpa, and formed copolyamide section at 8～24 hours drying time.
Copolyamide section after vacuumize, carry out melt spinning at 180～250 ℃, the fibre bundle of ejection direct admission velocity after cooling off, oiling is first drawing roller of 300～2500m/min, and then enter second drawing roller of 2000～5000m/min, be to carry out 1.5～4.5 times drawing-off between 50～100 ℃ two drawing roller in temperature, through the filamentary tow that forms after the drawing-off, finally under the speed of 2000～5000m/min, batch.
With respect to product and technology in the past, the low-melting point hot adhesion fiber of being produced by the present invention does not need to adopt composite spinning equipment, need not carry out the processing of secondary drafting forming in addition yet, technological process is simple, production cost is lower, and it is lower to use processing temperature, and unwinding is used more convenient, bonding intensity is better, can be widely used in all kinds of FANCY YARNS,, keep the shape of yarn with the twist of anchor yarns, to prevent that yarn from scattering and the generation of filoplume or drop, as yarn such as mop, woollen blanket; As all kinds of sewing threads, as lose sewing up of pinprick, in case feather gets out; Can be used for the fixedly local shape of clothes, and the closing in of knitwear; The bonding road, back of being convenient to that is used for fibre bundle processes, as glass fibre, optical fiber, and the fixing and unidirectional cloth of tow such as carbon fiber, basalt fibre.
The specific embodiment
Embodiment 1. is with polycaprolactam (PA6), and to obtain fusing point be 105 ℃ copolyamide for raw material carries out copolymerization for nylon 12 (PA12) and polyhexamethylene adipamide (PA66).Section is carried out 24 hours vacuumize at 52～80 ℃ under the-0.1Mpa; Melt spinning is carried out in section after drying under 180～200 ℃, afterwards by first drawing roller of speed at 800m/min, under 75 ℃, carry out 3.5 times of drawing-offs, after 2700m/min batch, obtain the low-melting point hot adhesion fiber that line density is 110dtex/36f, the fusing point of fiber is at 105 ℃, and the intensity of fiber reaches 3.2cN/dtex, and the elongation of fiber rate is 75%.
Embodiment 2. is with polycaprolactam (PA6), and to obtain fusing point be 112 ℃ copolyamide for raw material carries out copolymerization for polydecamethylene adipamide (PA610) and nylon 12 (PA12).Section is carried out 24 hours vacuumize at 55～80 ℃ under the-0.1Mpa; Melt spinning is carried out in section after drying under 190～205 ℃, afterwards by first drawing roller of speed at 800m/min, under 78 ℃, carry out 3.6 times of drawing-offs, after 2800m/min batch, obtain the low-melting point hot adhesion fiber that line density is 110dtex/36f, the fusing point of fiber is at 112 ℃, and the intensity of fiber reaches 3.3cN/dtex, and the elongation of fiber rate is 62%.
Claims (5)
1, a kind of low-melting point hot adhesion fiber is characterized in that: a kind of filament fiber that is formed at 80～150 ℃ copolyamide melt-spinning by fusing point.
2, low-melting point hot adhesion fiber as claimed in claim 1, it is characterized in that: the line density of the tow of described filament fiber is at 20～250dtex, the intensity of filament fiber is at 〉=1.5cN/dtex, and the percentage elongation of filament fiber is 30～150%, and the fusing point of filament fiber is at 80～150 ℃.
3, low-melting point hot adhesion fiber as claimed in claim 1 is characterized in that: described copolyamide is a kind of a kind of copolyamide that forms with lactam, the acid of aliphatic amido, aliphatic diamine and aliphatic dibasic acid copolymerization; The fusing point of described copolyamide is at 80～150 ℃;
The general structure of described copolyamide is:
{[CO(CH
2)
xCONH(CH
2)
yNH]
m[CO(CH
2)
zNH]
n}，
X wherein, y, z are the arbitrary integers in 4～18, m, n are positive integers.
4, as the production method of low-melting point hot adhesion fiber as described in the claim 1～3, it is characterized in that:
Copolyamide carried out 8～24 hours vacuumize under 50～100 ℃ temperature;
After melt extruding,,, and then enter second drawing roller of 2000～5000m/min through dried copolyamide by first drawing roller of 300～2500m/min through the spinnerets ejection;
Through the filamentary tow of carrying out between two drawing roller forming after 1.5～4.5 times the drawing-off, final winding speed is at 2000～5000m/min;
The temperature of two drawing roller is controlled at 50～100 ℃.
5, as the method for low-melting point hot adhesion fiber as described in the claim 4, it is characterized in that: described copolyamide is a kind of linear copolyamide that mainly forms with lactam, the acid of aliphatic amido, aliphatic diamine and aliphatic dibasic acid copolymerization; The fusing point of described copolyamide is at 80～150 ℃; The general structure of described copolyamide is:
{[CO(CH
2)
xCONH(CH
2)
yNH]
m[CO(CH
2)
zNH]
n}，
X wherein, y, z are the arbitrary positive integers in 4～18, m, n are positive integers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100296334A CN101555635B (en) | 2009-03-30 | 2009-03-30 | Method for producing low-melting point hot adhesion fiber |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100296334A CN101555635B (en) | 2009-03-30 | 2009-03-30 | Method for producing low-melting point hot adhesion fiber |
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| Publication Number | Publication Date |
|---|---|
| CN101555635A true CN101555635A (en) | 2009-10-14 |
| CN101555635B CN101555635B (en) | 2011-08-24 |
Family
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|---|---|---|---|
| CN2009100296334A Active CN101555635B (en) | 2009-03-30 | 2009-03-30 | Method for producing low-melting point hot adhesion fiber |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102560706A (en) * | 2012-02-29 | 2012-07-11 | 瑞安市瑞邦针纺科技有限公司 | Preparation method of low-melting-point hot-melting tynex |
| CN102808236A (en) * | 2012-08-10 | 2012-12-05 | 江苏省纺织研究所有限公司 | Low-melting-point heat-bonding compound conductive fiber and production method thereof |
| CN104313721A (en) * | 2014-11-06 | 2015-01-28 | 湖北省宇涛特种纤维股份有限公司 | Low-melting-point heat-bonded polyamide fiber filament, and preparation method therefor |
| JP2016113730A (en) * | 2014-12-16 | 2016-06-23 | 日本エステル株式会社 | Polyamide high orientation non-stretched yarn and manufacturing method therefor |
| CN112981584A (en) * | 2019-12-12 | 2021-06-18 | 东丽纤维研究所（中国）有限公司 | Nylon fiber |
-
2009
- 2009-03-30 CN CN2009100296334A patent/CN101555635B/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102560706A (en) * | 2012-02-29 | 2012-07-11 | 瑞安市瑞邦针纺科技有限公司 | Preparation method of low-melting-point hot-melting tynex |
| CN102808236A (en) * | 2012-08-10 | 2012-12-05 | 江苏省纺织研究所有限公司 | Low-melting-point heat-bonding compound conductive fiber and production method thereof |
| CN104313721A (en) * | 2014-11-06 | 2015-01-28 | 湖北省宇涛特种纤维股份有限公司 | Low-melting-point heat-bonded polyamide fiber filament, and preparation method therefor |
| CN104313721B (en) * | 2014-11-06 | 2016-03-16 | 湖北省宇涛特种纤维股份有限公司 | A kind of low-melting point hot adhesion polyamide fiber long filament and preparation method thereof |
| JP2016113730A (en) * | 2014-12-16 | 2016-06-23 | 日本エステル株式会社 | Polyamide high orientation non-stretched yarn and manufacturing method therefor |
| CN112981584A (en) * | 2019-12-12 | 2021-06-18 | 东丽纤维研究所（中国）有限公司 | Nylon fiber |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101555635B (en) | 2011-08-24 |
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