CN104862825A - Major diameter core-sheath composite monofilament and production method thereof - Google Patents
Major diameter core-sheath composite monofilament and production method thereof Download PDFInfo
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- CN104862825A CN104862825A CN201510317007.0A CN201510317007A CN104862825A CN 104862825 A CN104862825 A CN 104862825A CN 201510317007 A CN201510317007 A CN 201510317007A CN 104862825 A CN104862825 A CN 104862825A
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- type composite
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- 239000002131 composite material Substances 0.000 title claims abstract description 41
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 18
- 229920000728 polyester Polymers 0.000 claims abstract description 30
- 239000000463 material Substances 0.000 claims abstract description 25
- 238000002844 melting Methods 0.000 claims abstract description 6
- 230000008018 melting Effects 0.000 claims abstract description 6
- 238000004804 winding Methods 0.000 claims abstract description 4
- 239000011162 core material Substances 0.000 claims description 10
- 230000001054 cortical effect Effects 0.000 claims description 10
- -1 polyethylene terephthalate Polymers 0.000 claims description 10
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 9
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 9
- 238000009998 heat setting Methods 0.000 claims description 4
- 229920001707 polybutylene terephthalate Polymers 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- 229920002215 polytrimethylene terephthalate Polymers 0.000 claims description 3
- 238000009987 spinning Methods 0.000 claims description 3
- 230000004048 modification Effects 0.000 claims description 2
- 238000012986 modification Methods 0.000 claims description 2
- 239000010410 layer Substances 0.000 abstract description 38
- 238000012216 screening Methods 0.000 abstract description 11
- 239000012792 core layer Substances 0.000 abstract description 9
- 238000001816 cooling Methods 0.000 abstract 2
- 238000001035 drying Methods 0.000 abstract 1
- 238000001125 extrusion Methods 0.000 abstract 1
- 238000010035 extrusion spinning Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 14
- 230000008569 process Effects 0.000 description 9
- 241000238631 Hexapoda Species 0.000 description 6
- 239000002994 raw material Substances 0.000 description 3
- 241000607479 Yersinia pestis Species 0.000 description 2
- 238000012271 agricultural production Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000012958 reprocessing Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229920002292 Nylon 6 Polymers 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229920006334 epoxy coating Polymers 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
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- Multicomponent Fibers (AREA)
Abstract
The invention provides a major diameter core-sheath composite monofilament and a production method thereof. The major diameter core-sheath composite monofilament comprises a sheath layer, and a core layer, the sheath layer covers the core layer; the sheath layer and core layer are prepared from polyester; the melting point of the sheath layer polyester is 20-120 DEG C lower than that of the core layer polyester. The production method comprises the following steps: S101: selecting core layer material, selecting sheath layer material and drying respectively; S102, carrying out melt extrusion on the core layer material and sheath layer material through different screws and passing a metering pump, and carrying out extrusion spinning through a sheath-core composite spinneret plate; S103, cooling the extruded monofilament; S104, stretching the cooling monofilament; S105: winding the stretched monofilament. According to the major diameter core-sheath composite monofilament and the production method thereof, the polyesters of two different melting points are adopted as the sheath layer and the core layer of the monofilament, the firm combination of the sheath layer and the core layer can be realized, the grid points can be easily adhered and firmer during window screening processing.
Description
Technical field
The present invention relates to a kind of monofilament, particularly relate to a kind of major diameter core-skin type composite monofilament and production method thereof.
Background technology
In the environment such as modern house office hotel, in order to mosquito-proof insect protected, window is all installed window screening, common are stainless steel window screening the most, epoxy coating window screening, the stealthy window screening of glass fibre plain weave etc.In addition, in order to prevent insect pest to the infringement of crops in agricultural production process, insect protected gauze can be adopted.Above-mentioned window screening and insect protected gauze, the comfortable and agricultural production of the life for people is provided convenience, but by the restriction of gauze material, has various defect in its use procedure.
The cost compare of stainless steel window screening is high, and cannot realize invisible telescoping; The glass fibre chip of the aging rear generation of fibre-glass screen netting has harm to human body; General agriculture insect protected gauze, in use can produce the slippage of network intertwined point, mesh is out of shape, insect pest still can enter infringement.For above-mentioned situation, market is to a kind of low cost, collapsible, and the gauze that mesh can be fixed needs more and more stronger.A kind of is raw material with polymer filament, can meet that above-mentioned functions requires simultaneously gauze arise at the historic moment.
Chinese patent CN1037412255A discloses a kind of polytrimethylene terephthalate monofilament, the gauze that this monofilament is made into, and in Post isothermal treatment process, effectively cannot realize the bonding of mesh point.Chinese patent CN102864522A and CN104195671A discloses the core-sheath monofilament of a kind of PP/PET and PA6/PET, but because the compatibility of the polymer of PP and PET, PA6 and PET is bad, in use easily there is the stripping of cortex, the gauze mesh point bonding be made into by this monofilament to be realized simultaneously, need higher temperature.
Summary of the invention
Provide hereinafter about brief overview of the present invention, to provide about the basic comprehension in some of the present invention.Should be appreciated that this general introduction is not summarize about exhaustive of the present invention.It is not that intention determines key of the present invention or pith, and nor is it intended to limit the scope of the present invention.Its object is only provide some concept in simplified form, in this, as the preorder in greater detail discussed after a while.
The object of this invention is to provide a kind of major diameter core-skin type composite monofilament and production method thereof, the monofilament grid spot gluing solved as gauze material in background technology is comparatively difficult, and cortex such as easily to peel off at the problem.
The invention provides a kind of major diameter core-skin type composite monofilament, comprise cortex and sandwich layer, the coated described sandwich layer of described cortex, described cortex and described sandwich layer are polyester, and the fusing point of described cortex polyester is lower than the fusing point 20 ~ 120 DEG C of described sandwich layer polyester.
Present invention also offers a kind of production method of major diameter core-skin type composite monofilament, comprise step:
S101: choose inherent viscosity be the poliester chip of 0.6 ~ 1.2dl/g as core material, choose with its inherent viscosity difference be the polyester slice of 0.2 ~ 0.7dl/g as cortical material, be dried to below moisture 100ppm respectively;
S102: described core material is melt extruded respectively by different screw rods from described cortical material, according to certain mass percent by measuring pump, the core-sheath spinnerets extruding spinning in described measuring pump;
S103: the monofilament extruded is cooled by the liquid cools tank that temperature is 150 ~ 230 DEG C;
S104: cooled monofilament is stretched, stretching ratio is 4 ~ 8 times;
S105: the monofilament after stretching is carried out HEAT SETTING, reels subsequently.
Major diameter core-skin type composite monofilament provided by the invention and production method thereof by the polyester material of use two kinds of different melting points as the cortex of monofilament and sandwich layer, by the process of specific process step and corresponding temperature etc., the combination achieving this major diameter core-skin type composite monofilament cortex and sandwich layer is more firm, and mesh point is more prone to bonding and more firm in the process being processed into window screening.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the flow chart of major diameter core-skin type composite monofilament production method in the present invention.
Detailed description of the invention
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.The element described in an accompanying drawing of the present invention or a kind of embodiment and feature can combine with the element shown in one or more other accompanying drawing or embodiment and feature.It should be noted that for purposes of clarity, accompanying drawing and eliminate expression and the description of unrelated to the invention, parts known to persons of ordinary skill in the art and process in illustrating.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite not paying creative work, all belongs to the scope of protection of the invention.
Embodiment one:
The invention provides a kind of major diameter core-skin type composite monofilament, comprise cortex and sandwich layer, the coated described sandwich layer of described cortex, described cortex and described sandwich layer are polyester, and the fusing point of described cortex polyester is lower than the fusing point 20 ~ 120 DEG C of described sandwich layer polyester.
Major diameter core-skin type composite monofilament provided by the invention is by using the polyester material of different melting points as cortex and sandwich layer, and the fusing point of cortex is arranged lower, when being processed into window screening, the material of cortex is more prone to melt, and the connection between mesh point is more prone to.
Optionally, described cortex and described sandwich layer mass percent are 20:80 ~ 60:40.
Further, described cortex and described sandwich layer mass percent are cortex in the present invention and sandwich layer mass percent is 30:70 ~ 50:50; Cortex in the present invention and sandwich layer need to ensure above-mentioned mass percent, and the composite monofilament produced thus can ensure the demand of reprocessing more.
Optionally, the fusing point of described cortex polyester is 150 ~ 230 DEG C.
Optionally, the material of described cortex polyester be following any one: polyethylene terephthalate, polytrimethylene terephthalate, polybutylene terephthalate (PBT), modification polyethylene terephthalate containing the 3rd comonomer.Above-mentioned material all can select the cortex into major diameter core-skin type composite monofilament, and sandwich layer polyester also can be polyethylene terephthalate, only needs the fusing point of fusing point and cortical material to ensure the difference of 20 ~ 120 DEG C.
Optionally, the inherent viscosity of described sandwich layer polyester is 0.6 ~ 1.2dl/g, and the inherent viscosity of described cortex polyester is greater than the inherent viscosity of described sandwich layer polyester, and inherent viscosity difference is 0.2 ~ 0.7dl/g.Current composite monofilament mediopellis ratio is easier to peel off, come off with sandwich layer, the polyester of center core layer material of the present invention has certain inherent viscosity, and by the inherent viscosity of described cortical material design differ 0.2 ~ 0.7dl/g with the inherent viscosity of described core material, ensure that composite monofilament mediopellis material difficult drop-off, service time is longer.
Optionally, the cross section of described major diameter core-skin type composite monofilament is for circle and diameter is 0.08 ~ 0.8mm, and described sandwich layer cross section is circular, and the cross section of described major diameter core-skin type composite monofilament is concentric circles or off-centre operation in the cross section of described sandwich layer.In the present invention, composite monofilament is circular cross-section, and by the coated sandwich layer of cortex, the cross section of sandwich layer is because circular.
Major diameter core-skin type composite monofilament provided by the invention in use cortex difficult drop-off, service time is long, and the mesh point contacted with each other is more firm, and its fracture strength is 3.5-6.0cN/dtex, and elastic extension is 10 ~ 25%.
Embodiment two:
As shown in Figure 1, present invention also offers a kind of production method of major diameter core-skin type composite monofilament, comprise step:
S101: choose inherent viscosity be the poliester chip of 0.6 ~ 1.2dl/g as core material, choose with its inherent viscosity difference be the polyester slice of 0.2 ~ 0.7dl/g as cortical material, be dried to below moisture 100ppm respectively;
S102: described core material is melt extruded respectively by different screw rods from described cortical material, according to certain mass percent by measuring pump, the core-sheath spinnerets extruding spinning in described measuring pump;
S103: the monofilament extruded is cooled by the liquid cools tank that temperature is 150 ~ 230 DEG C;
S104: cooled monofilament is stretched, stretching ratio is 4 ~ 8 times;
S105: the monofilament after stretching is carried out HEAT SETTING, reels subsequently.
The present invention obtains composite monofilament by above-mentioned raw material and production stage, the material that cortex and sandwich layer adopt fusing point different respectively, ensure that the connection in the manufacturing process of window screening between mesh point is more easy and firm; And the inherent viscosity of cortex and core material also differs 0.2 ~ 0.7dl/g, ensure that the strong bonded of cortex and sandwich layer, cortex can not come off from sandwich layer easily, longer service life, and its fracture strength is 3.5-6.0cN/dtex, elastic extension is 10 ~ 25%.
Optionally, the temperature of melting described in step S102 is: 200 ~ 290 DEG C; The mass percent of described cortical material and described core material is 20:80 ~ 60:40.
Further, described cortex and described sandwich layer mass percent are cortex in the present invention and sandwich layer mass percent is 30:70 ~ 50:50; Cortex in the present invention and sandwich layer need to ensure above-mentioned mass percent, and the composite monofilament produced thus can ensure the demand of reprocessing more.
Optionally, be stretched as hot water described in step S104 to stretch or hot blast stretching; Described hot water draft temperature is: 80 ~ 95 DEG C, and described hot blast draft temperature is: 150 ~ 230 DEG C.Cooled monofilament needs by stretching step to reach the specification of needs, such as diameter, elongation at break, elastic extension etc.
Optionally, described winding speed is 80 ~ 200m/min.Carrying out stretching and major diameter core-skin type composite monofilament after HEAT SETTING needs to be wound up, unaffected in order to ensure other performances of this monofilament, winding speed need control at 80 ~ 200m/min.
The present invention obtains major diameter core-skin type composite monofilament by above-mentioned raw material and production stage, the combination achieving this major diameter core-skin type composite monofilament cortex and sandwich layer is more firm, and mesh point is more prone to bonding and more firm in the process being processed into window screening.
State in each embodiment on the invention, the sequence number of embodiment and/or sequencing are only convenient to describe, and do not represent the quality of embodiment.The description of each embodiment is all emphasized particularly on different fields, in certain embodiment, there is no the part described in detail, can see the associated description of other embodiments.
Although last it is noted that described the present invention and advantage thereof in detail above, be to be understood that and can carry out various change when not exceeding the spirit and scope of the present invention limited by appended claim, substituting and converting.And scope of the present invention is not limited only to the specific embodiment of process, equipment, means, method and step described by description.One of ordinary skilled in the art will readily appreciate that from disclosure of the present invention, can use perform the function substantially identical with corresponding embodiment described herein or obtain and its substantially identical result, existing and that will be developed in the future process, equipment, means, method or step according to the present invention.Therefore, appended claim is intended to comprise such process, equipment, means, method or step in their scope.
Claims (10)
1. a major diameter core-skin type composite monofilament, is characterized in that, comprises cortex and sandwich layer, the coated described sandwich layer of described cortex, and described cortex and described sandwich layer are polyester, and the fusing point of described cortex polyester is lower than the fusing point 20 ~ 120 DEG C of described sandwich layer polyester.
2. major diameter core-skin type composite monofilament according to claim 1, is characterized in that, described cortex and described sandwich layer mass percent are 20:80 ~ 60:40.
3. major diameter core-skin type composite monofilament according to claim 1, is characterized in that, the fusing point of described cortex polyester is 150 ~ 230 DEG C.
4. major diameter core-skin type composite monofilament according to claim 1, it is characterized in that, the material of described cortex polyester be following any one: polyethylene terephthalate, polytrimethylene terephthalate, polybutylene terephthalate (PBT), modification polyethylene terephthalate containing the 3rd comonomer.
5. major diameter core-skin type composite monofilament according to claim 1, it is characterized in that, the inherent viscosity of described sandwich layer polyester is 0.6 ~ 1.2dl/g, and the inherent viscosity of described cortex polyester is greater than the inherent viscosity of described sandwich layer polyester, and inherent viscosity difference is 0.2 ~ 0.7dl/g.
6. major diameter core-skin type composite monofilament according to claim 1, it is characterized in that, the cross section of described major diameter core-skin type composite monofilament is for circle and diameter is 0.08 ~ 0.8mm, described sandwich layer cross section is circular, and the cross section of described major diameter core-skin type composite monofilament is concentric circles or off-centre operation in the cross section of described sandwich layer.
7. a production method for major diameter core-skin type composite monofilament as claimed in claim 1, is characterized in that, comprise step:
S101: choose inherent viscosity be the poliester chip of 0.6 ~ 1.2dl/g as core material, choose with its inherent viscosity difference be the polyester slice of 0.2 ~ 0.7dl/g as cortical material, be dried to below moisture 100ppm respectively;
S102: described core material is melt extruded respectively by different screw rods from described cortical material, according to certain mass percent by measuring pump, the core-sheath spinnerets extruding spinning in described measuring pump;
S103: the monofilament extruded is cooled by the liquid cools tank that temperature is 150 ~ 230 DEG C;
S104: cooled monofilament is stretched, stretching ratio is 4 ~ 8 times;
S105: the monofilament after stretching is carried out HEAT SETTING, reels subsequently.
8. the production method of major diameter core-skin type composite monofilament according to claim 7, is characterized in that, the temperature of melting described in step S102 is: 200 ~ 290 DEG C; The mass percent of described cortical material and described core material is 20:80 ~ 60:40.
9. the production method of major diameter core-skin type composite monofilament according to claim 7, is characterized in that, is stretched as hot water and stretches or hot blast stretching described in step S104; Described hot water draft temperature is: 80 ~ 95 DEG C, and described hot blast draft temperature is: 150 ~ 230 DEG C.
10. the production method of major diameter core-skin type composite monofilament according to claim 7, is characterized in that, described winding speed is 80 ~ 200m/min.
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| CN201510317007.0A CN104862825B (en) | 2015-06-10 | 2015-06-10 | Major diameter core-skin type composite monofilament and its production method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106592015A (en) * | 2016-11-21 | 2017-04-26 | 厦门安踏体育用品有限公司 | Polyester fiber manufacturing method, polyester fibers, shell fabric and clothing |
| CN108441985A (en) * | 2018-03-29 | 2018-08-24 | 南通新帝克单丝科技股份有限公司 | Major diameter L-PET monofilament and preparation method thereof |
| CN110685027A (en) * | 2019-09-04 | 2020-01-14 | 苏州大学 | Method for preparing polymer optical fiber |
| CN113151913A (en) * | 2021-05-03 | 2021-07-23 | 晋江市成东纺织有限公司 | Bi-component composite monofilament and preparation method thereof |
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| CN113151913A (en) * | 2021-05-03 | 2021-07-23 | 晋江市成东纺织有限公司 | Bi-component composite monofilament and preparation method thereof |
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| CN104862825B (en) | 2017-10-27 |
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Effective date of registration: 20180209 Address after: 226000 zhxi industrial and Trade Park in Gangzha District, Nantong, Jiangsu Patentee after: Nantong new silk monofilament Polytron Technologies Inc Address before: 226600 Gangzha District, Nantong City, Jiangsu Province, Tiansheng Hong Kong Street, Gangzha industrial and Trade Park, Nantong Xin Di kmonwire Polytron Technologies Inc Patentee before: Ma Haiyan |
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Denomination of invention: Major diameter core-sheath composite monofilament and production method thereof Effective date of registration: 20180409 Granted publication date: 20171027 Pledgee: Nantong Zhonghe Company limited by guarantee Pledgor: Nantong new silk monofilament Polytron Technologies Inc Registration number: 2018980000048 |
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Date of cancellation: 20190523 Granted publication date: 20171027 Pledgee: Nantong Zhonghe Financing Guarantee Group Co., Ltd. Pledgor: Nantong new silk monofilament Polytron Technologies Inc Registration number: 2018980000048 |
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