CN103696086B - Production method for stationery clamp screen cloth - Google Patents
Production method for stationery clamp screen cloth Download PDFInfo
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- CN103696086B CN103696086B CN201310696729.2A CN201310696729A CN103696086B CN 103696086 B CN103696086 B CN 103696086B CN 201310696729 A CN201310696729 A CN 201310696729A CN 103696086 B CN103696086 B CN 103696086B
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Abstract
The invention relates to a production method for stationery clamp screen cloth. The production method for the stationery clamp screen cloth sequentially comprises the following steps of (1) a step of producing polyester slices, namely, enabling terephthalic acid and ethylene glycol with the mass ratio of 1 to 2.5 to be formed into raw materials, polymerizing the terephthalic acid and the ethylene glycol into polyester materials under the temperature of 285 DEG C, enabling the intrinsic viscosity of the polyester materials to be 1.1 and processing the polyester materials into polyester slices; (2) a step of producing yarns, namely, performing pre-crystallization on the polyester slices through a pre-crystallizer, pre-heating the polyester slices through a preheater, performing solid-phase polymerization on the polyester slices through a solid-phase polymerization reaction device, melting the polyester slices through a screw extruder and a heating device and drafting and forming silk strips through a drafting winding machine; (3) a step of forming the screen cloth, namely, producing into the screen cloth through warp yarns, weft yarns and binding yarns. The production method for the stationery clamp screen cloth has the advantages of being simple in technology, enabling operation to be easy and enabling produced screen cloth to be high in intensity and good in toughness.
Description
Technical field
The present invention relates to a kind of manufacture method of screen cloth, especially relate to a kind of manufacture method for the screen cloth in file, the produced screen cloth of this manufacture method is exclusively used in file.
Background technology
Screen cloth, also referred to as base cloth, grid cloth, its tool has been widely used, and has disclosed now the manufacture method of some screen cloths, if publication date is on December 07th, 2011, publication number is in the Chinese patent of CN102268817A, disclose a kind of PVC screen cloth and manufacture method thereof, the parts by weight of each component of this PVC screen cloth are: dioctyl phthalate 70 ~ 100 parts, PVC paste resin 100 parts, stabilizing agent 3 parts, CaCO
340 ~ 100 parts, thinner 0 ~ 5 part; In this manufacture method, the scraper adopted is scraper, when fabricbase is above it, disposable slurry unnecessary on fabricbase can be scraped totally, and make not remaining slurry inside hole, and high at slurry viscosity, when fabricbase is thickening, also can scrape off unnecessary slurry, do not need to adjust slurry and reach the thickness of needs, to reduce regulation time.
Such as, but because the purposes of screen cloth is different, comparatively large to the performance requirement difference of screen cloth, high for the screen cloth desired strength in file, good toughness, does not also have a kind of manufacture method for the screen cloth in file at present.
Summary of the invention
The object of the invention is to overcome above shortcomings in prior art, and provide a kind of technique simple, processing ease, the intensity of the screen cloth manufactured is high, the manufacture method for the screen cloth in file of good toughness.
The present invention's adopted technical scheme that solves the problem is: this is used for the manufacture method of the screen cloth in file, it is characterized in that: be made up of following steps successively:
(1) polyester slice manufacturing step: to be raw materials usedly made up of terephthalic acid (TPA) and ethylene glycol, the mass ratio of this terephthalic acid (TPA) and ethylene glycol is 1:2.5, described terephthalic acid (TPA) and ethylene glycol are at the temperature of 285 DEG C, aggregate into polyester thing, the inherent viscosity of this polyester thing is 1.1, then polyester thing is processed into polyester slice;
(2) yarn manufacturing step: this yarn manufacturing step is as follows successively:
A, employing pre-crystallizer carry out pre-crystallized to polyester slice, gas used is air, the temperature of this air is 180 DEG C, the holdup time of polyester slice is 20 minutes, after pre-crystallized, sloughed moisture content and the dust on polyester slice surface, and polyester slice is not hydrolyzed, and the inherent viscosity of polyester slice is constant;
B, employing preheater preheat polyester slice, gas used is nitrogen, the temperature of this nitrogen is 245 DEG C, the holdup time of polyester slice is 8 hours, and after preheating, the acetaldehyde in polyester slice drops to 1ppm, be stripped of the moisture of polyester slice inside, sloughed the dust on polyester slice surface completely, and polyester slice is not hydrolyzed, and the inherent viscosity of polyester slice is constant;
C, employing solid-phase polymerization device carry out solid phase to polyester slice, the holdup time of polyester slice is 20 hours, the temperature of solid phase is 260 DEG C, gas used is nitrogen, the initial temperature of this nitrogen is 65 DEG C, after solid phase, the acetaldehyde in polyester slice is less than 0.1ppm, and the inherent viscosity of polyester slice brings up to 1.3;
D, employing screw extruder and heater are by polyester slice melting, and the inlet temperature of screw extruder and outlet temperature are respectively 200 DEG C and 380 DEG C, and the extrusion capacity of screw extruder is 450kg/h, thus obtain the polyester fluid that may be used for spinning;
E, employing spinning machine carry out spinning to polyester fluid, under the promotion of pressure, polyester fluid is extruded and forms strand at the temperature of 315 DEG C, and adopt the cooling air that temperature is 30 DEG C, wind speed is 0.45m/s to cool strand, the speed of spinning is 2500m/min;
F, employing draw winder carry out drafting forming to strand, and be provided with drawing roller in draw winder used, the speed of drawing roller is 1500m/min, temperature is 70 DEG C, obtain intensity by drafting forming and be greater than 8N, and thickness is the yarn of 1000D, this yarn is used as warp thread and weft yarn;
(3) screen cloth forming step: adopt warp thread, weft yarn and tie up yarn and manufacture screen cloth, warp thread is all in vertical shape structure, the all horizontal structure of weft yarn, warp thread is connected by tying up yarn with weft yarn, the density of warp thread is per inch 4.5, the density of weft yarn is per inch 4.5, and the warp-wise of screen cloth and the intensity of broadwise are all greater than 92N.
Parameters in technique of the present invention organically combines, and make the screen cloth manufactured be exclusively used in file, the intensity of this screen cloth is high, good toughness, the intensity of warp-wise and broadwise is all greater than 92N, thus effectively can improve the intensity of file, extends the service life of file.
As preferably, in step of the present invention (2), the strand after counter extensioin sizing oils, to play lubrication and antistatic property.
The present invention compared with prior art, has the following advantages and effect: craft science, processing ease, high, the good toughness of screen cloth intensity manufactured, is exclusively used in file, and this screen cloth effectively can improve the intensity of file, extends the service life of file.
In polyester slice manufacturing step of the present invention, the mass ratio of terephthalic acid (TPA) and ethylene glycol is 1:2.5, and terephthalic acid (TPA) and ethylene glycol are at the temperature of 285 DEG C, and the inherent viscosity of polyester thing is 1.1.In yarn manufacturing step, adopt pre-crystallizer to carry out pre-crystallized to polyester slice, gas used is air, and the temperature of this air is 180 DEG C, and the holdup time of polyester slice is 20 minutes; Adopt preheater to preheat polyester slice, gas used is nitrogen, and the temperature of this nitrogen is 245 DEG C, and the holdup time of polyester slice is 8 hours; Adopt solid-phase polymerization device to carry out solid phase to polyester slice, the holdup time of polyester slice is 20 hours, and the temperature of solid phase is 260 DEG C, and gas used is nitrogen, and the initial temperature of this nitrogen is 65 DEG C; Adopt screw extruder and heater by polyester slice melting, the inlet temperature of screw extruder and outlet temperature are respectively 200 DEG C and 380 DEG C, and the extrusion capacity of screw extruder is 450kg/h; Adopt spinning machine to carry out spinning to polyester fluid, polyester fluid is extruded and forms strand at the temperature of 315 DEG C, and adopt the cooling air that temperature is 30 DEG C, wind speed is 0.45m/s to cool strand, the speed of spinning is 2500m/min; Adopt draw winder to carry out drafting forming to strand, the speed of drawing roller is 1500m/min, and temperature is 70 DEG C, obtains intensity be greater than 8N by drafting forming, and thickness is the yarn of 1000D.In screen cloth forming step, the density of warp thread is per inch 4.5, and the density of weft yarn is per inch 4.5, and the warp-wise of screen cloth and the intensity of broadwise are all greater than 92N.Above-mentioned technological parameter of the present invention is an organic whole, technological parameter in whole manufacture method just draws after paying creative work, just can obtain not by limited number of time test, these technological parameters organically combine, and work in coordination with and play a role, make the screen cloth manufactured be exclusively used in file, with strong points, can be good at meeting that file requirement of strength is high, the requirement of good toughness, effectively can improve the intensity of file, extend the service life of file.
Detailed description of the invention
Below by embodiment, the present invention is described in further detail, and following examples are explanation of the invention and the present invention is not limited to following examples.
Embodiment.
Be made up of polyester slice manufacturing step, yarn manufacturing step and screen cloth forming step successively for the manufacture method of the screen cloth in file in the present embodiment, these steps are specific as follows.
(1) polyester slice manufacturing step: to be raw materials usedly made up of terephthalic acid (TPA) and ethylene glycol, the mass ratio of this terephthalic acid (TPA) and ethylene glycol is 1:2.5, this proportioning science, rationally, is conducive to the toughness improving product.Terephthalic acid (TPA) and ethylene glycol, at the temperature of 285 DEG C, aggregate into polyester thing, and the inherent viscosity of this polyester thing is 1.1, then polyester thing is processed into polyester slice.
(2) yarn manufacturing step is as follows successively.
A, employing pre-crystallizer carry out pre-crystallized to polyester slice, gas used is air, the temperature of this air is 180 DEG C, the holdup time of polyester slice is 20 minutes, after pre-crystallized, sloughed moisture content and the dust on polyester slice surface, and polyester slice is not hydrolyzed, and the inherent viscosity of polyester slice is constant.
B, employing preheater preheat polyester slice, gas used is nitrogen, the temperature of this nitrogen is 245 DEG C, the holdup time of polyester slice is 8 hours, and after preheating, the acetaldehyde in polyester slice drops to 1ppm, be stripped of the moisture of polyester slice inside, sloughed the dust on polyester slice surface completely, and polyester slice is not hydrolyzed, and the inherent viscosity of polyester slice is constant.
C, employing solid-phase polymerization device carry out solid phase to polyester slice, the holdup time of polyester slice is 20 hours, the temperature of solid phase is 260 DEG C, gas used is nitrogen, the initial temperature of this nitrogen is 65 DEG C, after solid phase, the acetaldehyde in polyester slice is less than 0.1ppm, and the inherent viscosity of polyester slice brings up to 1.3.
D, employing screw extruder and heater are by polyester slice melting, and the inlet temperature of screw extruder and outlet temperature are respectively 200 DEG C and 380 DEG C, and the extrusion capacity of screw extruder is 450kg/h, thus obtain the polyester fluid that may be used for spinning;
E, employing spinning machine carry out spinning to polyester fluid, under the promotion of pressure, polyester fluid is extruded and forms strand at the temperature of 315 DEG C, and adopt the cooling air that temperature is 30 DEG C, wind speed is 0.45m/s to cool strand, the speed of spinning is 2500m/min.
F, employing draw winder carry out drafting forming to strand, and be provided with drawing roller in draw winder used, the speed of drawing roller is 1500m/min, temperature is 70 DEG C, obtain intensity by drafting forming and be greater than 8N, and thickness is the yarn of 1000D, this yarn is used as warp thread and weft yarn.The present invention also can counter extensioin sizing after strand oil, with play lubrication and antistatic property.
(3) screen cloth forming step: adopt warp thread, weft yarn and tie up yarn and manufacture screen cloth, warp thread is all in vertical shape structure, the all horizontal structure of weft yarn, warp thread is connected by tying up yarn with weft yarn, the density of warp thread is per inch 4.5, the density of weft yarn is per inch 4.5, and the warp-wise of screen cloth and the intensity of broadwise are all greater than 92N.
Of the present invention with strong points, purpose is clear and definite, manufacture a kind of screen cloth be exclusively used in file, high to meet file requirement of strength, the requirement of good toughness, polyester slice manufacturing step of the present invention, the technological parameter used in yarn manufacturing step and screen cloth forming step is an organic whole, technological parameter in whole manufacture method just draws after paying creative work, be exclusively used in file by the screen cloth of manufacture of the present invention, effectively can improve the intensity of file, improve the toughness of file, the service life of effective prolongation file.
Equipment used in the present invention is all same as the prior art or close, so place is no longer described relevant device.
Although the present invention with embodiment openly as above; but it is also not used to limit protection scope of the present invention; any technical staff being familiar with this technology, not departing from the change and retouching done in the spirit and scope of the present invention, all should belong to protection scope of the present invention.
Claims (2)
1. for a manufacture method for the screen cloth in file, it is characterized in that: be made up of following steps successively:
(1) polyester slice manufacturing step: to be raw materials usedly made up of terephthalic acid (TPA) and ethylene glycol, the mass ratio of this terephthalic acid (TPA) and ethylene glycol is 1:2.5, described terephthalic acid (TPA) and ethylene glycol are at the temperature of 285 DEG C, aggregate into polyester thing, the inherent viscosity of this polyester thing is 1.1dl/g, then polyester thing is processed into polyester slice;
(2) yarn manufacturing step: this yarn manufacturing step is as follows successively:
A, employing pre-crystallizer carry out pre-crystallized to polyester slice, gas used is air, the temperature of this air is 180 DEG C, the holdup time of polyester slice is 20 minutes, after pre-crystallized, sloughed moisture content and the dust on polyester slice surface, and polyester slice is not hydrolyzed, and the inherent viscosity of polyester slice is constant;
B, employing preheater preheat polyester slice, gas used is nitrogen, the temperature of this nitrogen is 245 DEG C, the holdup time of polyester slice is 8 hours, and after preheating, the acetaldehyde in polyester slice drops to 1ppm, be stripped of the moisture of polyester slice inside, sloughed the dust on polyester slice surface completely, and polyester slice is not hydrolyzed, and the inherent viscosity of polyester slice is constant;
C, employing solid-phase polymerization device carry out solid phase to polyester slice, the holdup time of polyester slice is 20 hours, the temperature of solid phase is 260 DEG C, gas used is nitrogen, the initial temperature of this nitrogen is 65 DEG C, after solid phase, the acetaldehyde in polyester slice is less than 0.1ppm, and the inherent viscosity of polyester slice brings up to 1.3dl/g;
D, employing screw extruder and heater are by polyester slice melting, and the inlet temperature of screw extruder and outlet temperature are respectively 200 DEG C and 380 DEG C, and the extrusion capacity of screw extruder is 450kg/h, thus obtain the polyester fluid that may be used for spinning;
E, employing spinning machine carry out spinning to polyester fluid, under the promotion of pressure, polyester fluid is extruded and forms strand at the temperature of 315 DEG C, and adopt the cooling air that temperature is 30 DEG C, wind speed is 0.45m/s to cool strand, the speed of spinning is 2500m/min;
F, employing draw winder carry out drafting forming to strand, and be provided with drawing roller in draw winder used, the speed of drawing roller is 1500m/min, temperature is 70 DEG C, obtain intensity by drafting forming and be greater than 8N, and thickness is the yarn of 1000D, this yarn is used as warp thread and weft yarn;
(3) screen cloth forming step: adopt warp thread, weft yarn and tie up yarn and manufacture screen cloth, warp thread is all in vertical shape structure, the all horizontal structure of weft yarn, warp thread is connected by tying up yarn with weft yarn, the density of warp thread is per inch 4.5, the density of weft yarn is per inch 4.5, and the warp-wise of screen cloth and the intensity of broadwise are all greater than 92N.
2. the manufacture method for the screen cloth in file according to claim 1, is characterized in that: in described step (2), and the strand after counter extensioin sizing oils, to play lubrication and antistatic property.
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| CN104831465B (en) * | 2015-05-06 | 2016-03-02 | 福建省晋江市华宇织造有限公司 | A kind of antibacterial warming composite functional screen cloth and manufacture method thereof |
| CN105040224A (en) * | 2015-07-08 | 2015-11-11 | 苏州煜伟纺织有限公司 | Method and device for preparing warp yarns |
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Address after: Tongxiang City, Jiaxing City, Zhejiang province 314503 Tu Dian Zhen Shuguang Road No. 28 Patentee after: ZHEJIANG MINGLONG FABRIC CO., LTD. Address before: Tongxiang City, Jiaxing City, Zhejiang province 314503 Tu Dian Zhen Shuguang Road No. 28 Patentee before: ZHEJIANG MINGLONG BASE FABRIC CO., LTD. |