CN103451801B - Production process for double-covered broken spandex filament - Google Patents
Production process for double-covered broken spandex filament Download PDFInfo
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- CN103451801B CN103451801B CN201310373605.0A CN201310373605A CN103451801B CN 103451801 B CN103451801 B CN 103451801B CN 201310373605 A CN201310373605 A CN 201310373605A CN 103451801 B CN103451801 B CN 103451801B
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Abstract
The invention discloses a production process for a double-covered broken spandex filament, which includes the following steps: (1) covering: a spandex core is covered by a first layer of staple yarn; the spandex core which is already covered by the layer of staple yarn is covered by a second layer of staple yarn; in the process of covering, the twist of covering is controlled at 400T/m to 600T/m, and the drawing ratio of covering is controlled between 3.5 and 6; (2) underfed drawing: the covered yarn which is covered by the two layers is drawn for the second time, and the internal spandex core is pulled apart under control, while the outer layers of covering yarns are not pulled apart; the ratio of the second drawing is 1.15 to 1.3 times as high as the drawing ratio of covering. The spandex core is covered by the two layers of yarns in one step, the covering operation does not need to be repeated, and thereby the efficiency of production is greatly increased; since the core is irregularly pulled apart by the way of underfed drawing, the central spandex is broken by irregular distances, and as a result, certain parts have the spandex, while the other parts do not have the spandex. On the same core-spun filament, certain parts have elasticity, while the other parts do not have elasticity. Irregular folds can be formed on the surface of a fabric made of the core-spun filament.
Description
Technical field
The present invention relates to spandex to produce or spandex thread cladding process field, particularly relate to the production technology that disconnected ammonia silk is covered in a kind of double-contracting.
Background technology
Current domestic spandex core-covered silk (silk) fabric is all the fashion, and its kind mainly contains the cored silk of spandex filament and staple fibre and the large class of cored silk two of long filament.Main to select the outsourcing yarn of different fibrous raw material in the exploitation of product.Its core silk is continuous print spandex filament, and outsourcing staple fibre has cotton, polyester-cotton blend, terylene, polyamide fibre, acrylic fibers and wool fibre etc.; The chemical-fibres filaments of outsourcing has polyester filament, chinlon filament etc.Its middle spandex thread of spandex core-covered silk that common covering filament machine is produced is continuous print, and being embodied on cloth cover is smooth fabric springy, produces the technique of disconnected ammonia wrap yarn at present.
Summary of the invention
The object of the invention is to overcome above-mentioned the deficiencies in the prior art, providing a kind of double-contracting to cover the production technology of disconnected ammonia silk.
In order to realize foregoing invention object, the technical solution used in the present invention is:
A production technology for disconnected ammonia silk is covered in double-contracting, comprises the following steps:
1) coated: the fine yarn of ground floor to carry out to spandex core silk coated; The fine yarn of the second layer carries out to the coated spandex core silk crossing the fine yarn of one deck coated;
The coated twist of coated process control, at 400-600T/m, controls coated draft ratio between 3.5-5.5;
2) underfeed drawing-off: carry out second time drawing-off to the wrap yarn after double-coated, controls break inner spandex core silk and do not break external sheath silk;
The multiplying power of second time drawing-off is 1.15-1.3 times of coated draft ratio.
Wherein,
In step 1), when coated fine yarn is for long fibre, control the coated twist between 450T/m-550T/m;
When coated fine yarn is short fiber, control the coated twist between 500T/m-550T/m;
The coated fine yarn of ground floor for long fine, the coated fine yarn of the second layer be short fiber, or the coated fine yarn of ground floor be short fiber, the coated fine yarn of the second layer for long fine time, control the coated twist between 500T/m-600T/m.
Wherein, the spandex core silk that step 1) is selected is 40D spandex or 70D spandex;
When spandex core silk be 40D spandex, coated fine yarn for time long fine, control coated draft ratio between 4.0-5.5;
When spandex core silk be 40D spandex, coated fine yarn be short fiber time, control coated draft ratio between 3.5-4.5;
When spandex core silk be 40D spandex, the coated fine yarn of ground floor is long fiber, the coated fine yarn of the second layer is short fiber, or spandex core silk be 40D spandex, the coated fine yarn of ground floor be short fiber, the coated fine yarn of the second layer for time long fine, control coated draft ratio between 4.0-5.5;
When spandex core silk is 70D spandex, control coated draft ratio between 5-6.
Wherein, step 2) in control inner spandex core silk breakpoint be spaced apart 5cm-20cm.
Beneficial effect of the present invention is: disposable coated double-deck yarn, without the need to repeating coated operation, saving a large amount of manpower and cost, also greatly improving production efficiency, realizes the product quality that disposable double-contracting covers simultaneously and also more stablizes than twice; Break heart yearn brokenly by underfeed drawing-off, make middle spandex be the short-range disconnection of irregular length, forming some places has spandex, and some places do not have spandex.The flexible contraction of some places on same bar cored silk, some places do not have elastic shrinkage.With the fabric that this cored silk weaving becomes, cloth cover forms irregular fold.Its appearance style seemingly wrinkles non-wrinkle, and like numb non-fiber crops, affording food for thought, is the desirable fabric of women's dress spring and summer.
Detailed description of the invention
By describing technology contents of the present invention, structural feature in detail, being realized object and effect, be explained in detail below in conjunction with embodiment.
Covering filament is the core silk after drawing-off when passing the spindle with outsourcing gauze pipe, by a kind of spinning process of outsourcing silk by its uniform looping, has just drawn two large craft features of spinning covering filament here, i.e. draft ratio and coated density (i.e. the twist).
Draft ratio (representing with D/R), the i.e. ratio of the linear velocity of drawing rollers and the linear velocity of synchronization feeding roller, it sets according to the amount of elasticity of processing request.
The twist (representing with T/M), refers to the number of turns that on the core silk after drawing-off, every meter of outsourcing silk wraps up, is inversely proportional to spinning speed, be directly proportional to spindle speed, can express between them in order to lower relational expression: T/M=spindle speed/drawing-off linear velocity.
The present invention is the production technology that disconnected ammonia silk is covered in a kind of double-contracting, comprises the following steps: 1) coated: carry out the fine yarn of ground floor to spandex core silk coated; The fine yarn of the second layer carries out to the coated spandex core silk crossing the fine yarn of one deck coated; The coated twist of coated process control, at 400-600T/m, controls coated draft ratio between 3.5-5.5; 2) underfeed drawing-off: carry out second time drawing-off to the wrap yarn after double-coated, controls break inner spandex core silk and do not break external sheath silk; The multiplying power of second time drawing-off is 1.15-1.3 times of coated draft ratio.Disposable coated double-deck yarn, without the need to repeating coated operation, saving a large amount of manpower and cost, also greatly improving production efficiency, realizes the product quality that disposable double-contracting covers simultaneously and also more stablizes than twice; Break heart yearn brokenly by underfeed drawing-off, make middle spandex be the short-range disconnection of irregular length, forming some places has spandex, and some places do not have spandex.The flexible contraction of some places on same bar cored silk, some places do not have elastic shrinkage.With the fabric that this cored silk weaving becomes, cloth cover forms irregular fold.Its appearance style seemingly wrinkles non-wrinkle, and like numb non-fiber crops, affording food for thought, is the desirable fabric of women's dress spring and summer.
Draft ratio: in technique, the selection of disconnected ammonia wrap yarn draft ratio is crucial, specifically should test according to the fibrous raw material of spandex dawn number, elastic elongation performance and outer cladding and determine, generally can be lower than the elongation to break value of spandex by about 10%, principle is large as far as possible when not breaking spandex.
By test 40D spandex, the draft ratio of outsourcing long filament is selected between 4.0-5.5, short fiber is selected between 3.5-4.5, short fiber adds long filament double-contracting and overlays between 3.5-5.0 and select; 70D spandex is selected between 5 ~ 6.Domestic spandex due to elastic elongation lower, draft ratio should setting on the low side, and import elastomeric polyurethane fiber extends comparatively large, and draft ratio should higher setting, and this numerical value of different manufacturers also has larger difference.Namely the draft ratio of described first drawing-off structure is set as 3.5-6.Namely the spandex core silk that step 1) is selected is 40D spandex or 70D spandex; When spandex core silk be 40D spandex, coated fine yarn for time long fine, control coated draft ratio between 4.0-5.5; When spandex core silk be 40D spandex, coated fine yarn be short fiber time, control coated draft ratio between 3.5-4.5; When spandex core silk be 40D spandex, the coated fine yarn of ground floor be long fiber, the coated fine yarn of the second layer is short fiber, or spandex core silk be 40D spandex, the coated fine yarn of ground floor be short fiber, the coated fine yarn of the second layer for time long fine, control coated draft ratio between 4.0-5.5; When spandex core silk is 70D spandex, control coated draft ratio between 5-6.
Coverage degree (twist): mechanical wrap yarn also has an important technical parameter to be exactly the twist, the twist affects the quality of yarn, strength and elongation and bar evenness.Increase the twist, the cohesive force between outer wrapping fiber and spandex thread can be increased, wrap yarn brute force is improved.The twist is too low, and outer wrapping fiber is loose, affects covered effect, occurs dew core phenomenon, therefore mechanical coated time the twist should be higher.But the twist is too high, fabric feeling hardens, and drapability is poor.With the change of the dawn Buddhist nun number of yarn and the style of fabric, the general twist requires that difference will be adjusted accordingly.The percentage elongation of machine bag determined primarily of spandex core silk performance equally, and the twist is excessive, and outer layer fiber is coated too tight, and the elastic effect of spandex thread can not give full play on the contrary, and percentage elongation is declined.Along with the twist increases, bar evenness makes moderate progress.The twist is too small, and outer wrapping fiber is loose, and in spinning process, because the reason fibers such as friction are along yarn axis to can slightly move, Gu Tiaogan worsens to some extent.
According to our production practices, coated with long filament, no matter what composition twist is selected between 450T/m-550T/m, select between 500T/m-550T/m by the coated twist of short fiber, add with short fiber the twist that long filament double-contracting covers disconnected ammonia yarn and then select between 500T/m-600T/m.This product is that cotton adds polyester filament double-contracting and covers, and the twist selected by test is 570T/m.Namely be long filament on the spool of covering machine structure, the rotating speed of the spindle of described covering machine structure and the drawing-off linear velocity of the second drawing-off structure are than being 450-550; Be short fiber on the spool of covering machine structure, the rotating speed of the spindle of described covering machine structure and the drawing-off linear velocity of the second drawing-off structure are than being 500-550; For long filament adds short fiber on the spool of covering machine structure, the rotating speed of the spindle of described covering machine structure and the drawing-off linear velocity of the second drawing-off structure are than being 500-600.Namely, in step 1), when coated fine yarn is for long fibre, the coated twist is controlled between 450T/m-550T/m; When coated fine yarn is short fiber, control the coated twist between 500T/m-550T/m; The coated fine yarn of ground floor for long fine, the coated fine yarn of the second layer be short fiber, or the coated fine yarn of ground floor be short fiber, the coated fine yarn of the second layer for long fine time, control the coated twist between 500T/m-600T/m.
Underfeed drafting and snapping spandex, in technique, the selection of super drafting multiple is extremely important equally, and numerical value is generally the first time about 1.15 times of drafting multiple value determined above, and desirable drafting multiple should make to be interposed between 5cm-20cm between the breakpoint of spandex.Drafting multiple is too little, and spandex draws continuous or breakpoint is little, does not reach the due effect of disconnected ammonia wrap yarn fabric; Drafting multiple is too large, and will cause breakpoint interval too small, corrugation effect is bad, and fabric flexibility decrease, affects wearability.Be defined as about 1.15 times of first time drawing-off by the drafting multiple 40D testing this step, 70D is defined as about 1.18 times of first time drawing-off, is interposed between 7-18cm between the breakpoint of spandex, respond well after being made into fabric.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (4)
1. a production technology for disconnected ammonia silk is covered in double-contracting, it is characterized in that, comprises the following steps:
1) coated: the fine yarn of ground floor to carry out to spandex core silk coated; The fine yarn of the second layer carries out to the coated spandex core silk crossing the fine yarn of one deck coated;
The coated twist of coated process control, at 400-600T/m, controls coated draft ratio between 3.5-6;
2) underfeed drawing-off: carry out second time drawing-off to the wrap yarn after double-coated, controls break inner spandex core silk and do not break external sheath silk;
The multiplying power of second time drawing-off is 1.15-1.3 times of coated draft ratio.
2. the production technology of disconnected ammonia silk is covered in double-contracting according to claim 1, it is characterized in that,
Step 1) in, when the coated fine yarn of ground floor and the coated fine yarn of the second layer are long fibre, control the coated twist between 450T/m-550T/m;
When the coated fine yarn of ground floor and the coated fine yarn of the second layer are short fiber, control the coated twist between 500T/m-550T/m;
The coated fine yarn of ground floor for long fine, the coated fine yarn of the second layer be short fiber, or the coated fine yarn of ground floor be short fiber, the coated fine yarn of the second layer for long fine time, control the coated twist between 500T/m-600T/m.
3. the production technology of disconnected ammonia silk is covered in double-contracting according to claim 1, it is characterized in that, step 1) the spandex core silk selected is 40D spandex or 70D spandex;
When spandex core silk be 40D spandex, the coated fine yarn of ground floor and the coated fine yarn of the second layer be long fine time, control coated draft ratio between 4.0-5.5;
When spandex core silk be 40D spandex, the coated fine yarn of ground floor and the coated fine yarn of the second layer be short fiber time, control coated draft ratio between 3.5-4.5;
When spandex core silk be 40D spandex, the coated fine yarn of ground floor for long fine, the coated fine yarn of the second layer be short fiber, or spandex core silk be 40D spandex, the coated fine yarn of ground floor be short fiber, the coated fine yarn of the second layer for time long fine, control coated draft ratio between 4.0-5.5;
When spandex core silk is 70D spandex, control coated draft ratio between 5-6.
4. the production technology of disconnected ammonia silk is covered in double-contracting according to claim 1, it is characterized in that, step 2) in control inner spandex core silk breakpoint be spaced apart 5cm-20cm.
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| CN201310373605.0A CN103451801B (en) | 2013-08-24 | 2013-08-24 | Production process for double-covered broken spandex filament |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104652003A (en) * | 2015-03-05 | 2015-05-27 | 绍兴文理学院 | Production device for double covered yarns |
| CN106958067A (en) * | 2017-03-20 | 2017-07-18 | 四川润厚特种纤维有限公司 | A kind of composite covered yarn and preparation method thereof |
| CN107119377A (en) * | 2017-07-05 | 2017-09-01 | 杭州巨胜实业有限公司 | A kind of bloom elastic force motion easily tears cloth and preparation method thereof |
| CN109295580A (en) * | 2018-12-03 | 2019-02-01 | 四川润厚特种纤维有限公司 | Low bullet woolliness composite fibre wrap yarn of one kind and preparation method thereof |
| CN113832582A (en) * | 2021-08-26 | 2021-12-24 | 江阴市茂达棉纺厂有限公司 | Composite yarn and preparation and coloring method thereof |
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| CN101328637A (en) * | 2008-05-07 | 2008-12-24 | 鲁建国 | Dissimilar materials double-layer superpacket center thread and manufacturing method thereof |
| CN201343602Y (en) * | 2008-12-18 | 2009-11-11 | 杭州翔盛高强纤维材料股份有限公司 | Winding type anti-cutting wrap yarn |
| CN203080159U (en) * | 2013-03-01 | 2013-07-24 | 福州华冠针纺织品有限公司 | One-step double-coated covering silk machine |
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Patent Citations (6)
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| JP2002146642A (en) * | 2000-11-08 | 2002-05-22 | Aiki Seisakusho:Kk | Method for processing yarn and device therefor |
| CN1372027A (en) * | 2002-03-07 | 2002-10-02 | 薛元 | Method and apparatus for making core-spun yarn of steple-fibre covered filament |
| KR100811065B1 (en) * | 2007-03-15 | 2008-03-06 | 한국생산기술연구원 | High elastic core spun yarns using nylon or polyester dty, process for manufacturing the same and knitted fabrics using said core spun yarns |
| CN101328637A (en) * | 2008-05-07 | 2008-12-24 | 鲁建国 | Dissimilar materials double-layer superpacket center thread and manufacturing method thereof |
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| CN203080159U (en) * | 2013-03-01 | 2013-07-24 | 福州华冠针纺织品有限公司 | One-step double-coated covering silk machine |
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