CN102864522B - Large-diameter PP-PET (polypropylene-polyethylene terephthalate) sheath-core composite monofilament and production method thereof - Google Patents
Large-diameter PP-PET (polypropylene-polyethylene terephthalate) sheath-core composite monofilament and production method thereof Download PDFInfo
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- CN102864522B CN102864522B CN201210372663.7A CN201210372663A CN102864522B CN 102864522 B CN102864522 B CN 102864522B CN 201210372663 A CN201210372663 A CN 201210372663A CN 102864522 B CN102864522 B CN 102864522B
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Abstract
The invention discloses a large-diameter PP-PET (polypropylene-polyethylene terephthalate) sheath-core composite monofilament and a production method thereof. The monofilament is characterized in that the polymer is PP and PET blended polyester; the mass ratio of PP to PET is (20:80) to (60:40); the diameter of the monofilament is 0.2-1mm; the strength of the monofilament is not less than 3.5CN/dtex; and the elongation at break is 15-25%. The production method comprises the steps of melt extrusion, cooling, drawing and heat setting, wherein a liquid cooling method is adopted in the step of cooling. The production method is simple in process and is convenient to operate; and the formed fibers have the characteristics of high tenacity, high roundness, high uniformity and the like and have wide range of application.
Description
Technical field
The present invention relates to a kind of major diameter PP-PET core-skin type composite monofilament and production method thereof.
Background technology
, there is defect at aspect of performances such as intensity, extension at breaks in existing monofilament, affects service behaviour and the scope of application.
Summary of the invention
The object of the present invention is to provide a kind of major diameter PP-PET core-skin type composite monofilament and production method thereof of favorable working performance.
Technical solution of the present invention is:
A kind of major diameter PP-PET core-skin type composite monofilament, it is characterized in that: polymer is polypropylene, polyethylene terephthalate blending polyester, and the mass ratio of polypropylene and polyethylene terephthalate is 20:80 ~ 60:40, polypropylene is cortex, polyethylene terephthalate is sandwich layer, filament diameter is 0.2 ~ 1mm, filament strength >=3.5CN/dtex, and elongation at break is 15 ~ 25%.
The production method of described major diameter PP-PET core-skin type composite monofilament, comprise composite spinning, cooling, stretching, HEAT SETTING step, it is characterized in that: cooling employing liquid cooling method, to directly enter liquid feeding tank from the polymer melt of spinneret component ejection, carry out liquid cools moulding, and the forward and backward Wound-up roller in liquid case carries liquid outlet tank to enter postorder operation; Forward and backward Wound-up roller is positioned in same level, distance between forward and backward Wound-up roller is 50 ~ 120cm, wherein in liquid case, the temperature of liquid is 30 ~ 60 ℃, and spinneret component spray silk end is 5cm with the distance of liquid case liquid level, and the roller in liquid case and the distance of liquid level are 30 ~ 80cm; Liquid in liquid case is circulation fluid, and the flow of circulation fluid is 25 ~ 250kg/h, and the liquid in liquid case is water, triethylene glycol liquid or paraffin liquid, the tensile stress≤critical tensile stress of monofilament; One-level hot water draft temperature is 80 ~ 98 ℃, and secondary hot blast draft temperature is 140-180 ℃, and total stretching ratio is 4.0 ~ 6.0 times; Heat setting temperature is 160 ~ 180 ℃.
Technique of the present invention is simple, easy to operate, and the fiber of moulding has the features such as high-tenacity, high roundness, high uniformity, and the scope of application is wide.
Below in conjunction with drawings and Examples, the invention will be further described.
Fig. 1 is the cooling device schematic diagram of one embodiment of the invention.
The specific embodiment
A kind of major diameter PP-PET core-skin type composite monofilament, polymer is polypropylene, polyethylene terephthalate blending polyester, and the mass ratio of polypropylene and polyethylene terephthalate is 20:80 ~ 60:40, polypropylene is cortex, polyethylene terephthalate is sandwich layer, filament diameter is 0.2 ~ 1mm, filament strength >=3.5CN/dtex, and elongation at break is 15 ~ 25%.
The production method of described major diameter PP-PET core-skin type composite monofilament, comprise composite spinning, cooling, stretching, HEAT SETTING step, cooling employing liquid cooling method, to directly enter liquid feeding tank 2 from the polymer melt of spinneret component 1 ejection, carry out liquid cools moulding, and the forward and backward Wound-up roller in liquid case 3,4 carries liquid outlet tank to enter postorder operation; Forward and backward Wound-up roller is positioned in same level, distance between forward and backward Wound-up roller is 50 ~ 120cm, wherein in liquid case, the temperature of liquid is 30 ~ 60 ℃, and spinneret component spray silk end is 5cm with the distance of liquid case liquid level, and the roller in liquid case and the distance of liquid level are 30 ~ 80cm; Liquid in liquid case is circulation fluid, and the flow of circulation fluid is 25 ~ 250kg/h, and the liquid in liquid case is water, triethylene glycol liquid or paraffin liquid, the tensile stress≤critical tensile stress of monofilament; One-level hot water draft temperature is 80 ~ 98 ℃, and secondary hot blast draft temperature is 140-180 ℃, and total stretching ratio is 4.0 ~ 6.0 times; Heat setting temperature is 160 ~ 180 ℃.
Claims (1)
1. the production method of a major diameter PP-PET core-skin type composite monofilament, comprise composite spinning, cooling, stretching, HEAT SETTING step, it is characterized in that: polymer is polypropylene, polyethylene terephthalate blending polyester, and the mass ratio of polypropylene and polyethylene terephthalate is 20:80～60:40, polypropylene is cortex, and polyethylene terephthalate is sandwich layer, and filament diameter is 0.2～1mm, filament strength >=3.5cN/dtex, elongation at break is 15～25%;
Cooling employing liquid cooling method, directly enters liquid feeding tank from the polymer melt of spinneret component ejection, carries out liquid cools moulding, and the forward and backward Wound-up roller in liquid case carries liquid outlet tank to enter postorder operation; Forward and backward Wound-up roller is positioned in same level, distance between forward and backward Wound-up roller is 50～120cm, wherein in liquid case, the temperature of liquid is 30～60 ℃, and spinneret component spray silk end is 5cm with the distance of liquid case liquid level, and the roller in liquid case and the distance of liquid level are 30～80cm; Liquid in liquid case is circulation fluid, and the flow of circulation fluid is 25～250kg/h, and the liquid in liquid case is triethylene glycol liquid, the tensile stress≤critical tensile stress of monofilament; One-level hot water draft temperature is 80～98 ℃, and secondary hot blast draft temperature is 140-180 ℃, and total stretching ratio is 4.0～6.0 times; Heat setting temperature is 160～180 ℃.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210372663.7A CN102864522B (en) | 2012-09-29 | 2012-09-29 | Large-diameter PP-PET (polypropylene-polyethylene terephthalate) sheath-core composite monofilament and production method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210372663.7A CN102864522B (en) | 2012-09-29 | 2012-09-29 | Large-diameter PP-PET (polypropylene-polyethylene terephthalate) sheath-core composite monofilament and production method thereof |
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| Publication Number | Publication Date |
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| CN102864522A CN102864522A (en) | 2013-01-09 |
| CN102864522B true CN102864522B (en) | 2014-04-23 |
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| CN201210372663.7A Active CN102864522B (en) | 2012-09-29 | 2012-09-29 | Large-diameter PP-PET (polypropylene-polyethylene terephthalate) sheath-core composite monofilament and production method thereof |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103993383B (en) * | 2013-12-31 | 2018-01-12 | 江苏德力化纤有限公司 | One kind imitates numb core-skin composite fiber and preparation method thereof |
| CN103993384B (en) * | 2013-12-31 | 2017-11-14 | 江苏德力化纤有限公司 | One kind imitates numb FDY fiber and preparation method thereof |
| CN103938294A (en) * | 2014-04-04 | 2014-07-23 | 吉林省华纺纤维制造有限公司 | Method for preparing polypropylene/polyethylene terephthalate (PP/PET) composite short fiber without any smell |
| CN103911685A (en) * | 2014-04-29 | 2014-07-09 | 厦门怡龙谷新材料科技有限公司 | Novel composite monofilament with skin core structure and large diameter, as well as manufacturing method and application thereof |
| CN104878475A (en) * | 2015-06-10 | 2015-09-02 | 马海燕 | Large-diameter sheath-core type composite monofilament and production method thereof |
| CN112575396B (en) * | 2020-12-22 | 2022-06-28 | 南通新帝克单丝科技股份有限公司 | High-dpf polyester industrial yarn and production method thereof |
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| CN101161874A (en) * | 2006-10-10 | 2008-04-16 | 马海燕 | Core-skin type paper making modeling net filament |
| CN101974794A (en) * | 2010-10-26 | 2011-02-16 | 马海燕 | Large-diameter high-strength polymer hot melting monofilament and production method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3342573B2 (en) * | 1994-05-19 | 2002-11-11 | ユニチカ株式会社 | Composite fiber suitable for safety net |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101161874A (en) * | 2006-10-10 | 2008-04-16 | 马海燕 | Core-skin type paper making modeling net filament |
| CN101974794A (en) * | 2010-10-26 | 2011-02-16 | 马海燕 | Large-diameter high-strength polymer hot melting monofilament and production method thereof |
Non-Patent Citations (3)
| Title |
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| JP特开平7-316927A 1995.12.05 |
| 马海燕等.高特PET-PBT共混单丝的结构与性能.《功能高分子学报》.2011,第24卷(第2期),第178-179第2.2-2.3节. |
| 高特PET-PBT共混单丝的结构与性能;马海燕等;《功能高分子学报》;20110630;第24卷(第2期);第178-179第2.2-2.3节 * |
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Owner name: NANTONG NTEC SPECIAL FIBER CO., LTD. Free format text: FORMER OWNER: MA HAIYAN Effective date: 20150106 |
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Effective date of registration: 20150106 Address after: 226000, Gangzha District, Jiangsu City, Gangzha province Nantong port industrial and Trade Park Patentee after: Nantong new silk monofilament Polytron Technologies Inc Address before: 226000, Gangzha District, Jiangsu City, Nantong province Nantong Gangzha economic and Trade Zone, the new emperor textile fiber Chemical Co., Ltd. Patentee before: Ma Haiyan |