CN216947301U - Elastic sheath-core hollow microporous untwisted composite filament - Google Patents
Elastic sheath-core hollow microporous untwisted composite filament Download PDFInfo
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- CN216947301U CN216947301U CN202220153221.2U CN202220153221U CN216947301U CN 216947301 U CN216947301 U CN 216947301U CN 202220153221 U CN202220153221 U CN 202220153221U CN 216947301 U CN216947301 U CN 216947301U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
- Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
Abstract
The utility model relates to a hollow microporous untwisted composite filament with an elastic sheath core, which can be used for manufacturing fiber nibs, water absorption rods, filter elements, filter materials, liquid storage materials and the like, and belongs to the technical field of composite fibers. The hollow microporous untwisted composite filament of the elasticated sheath core is formed by compounding a plurality of hollow untwisted filaments of the elasticated sheath core, the hollow untwisted filaments of the elasticated sheath core comprise an epidermal layer, an inner layer and a hollow core layer, the epidermal layer is coated outside the inner layer, and the hollow core layer is arranged in the middle of the inner layer. The skin layer and the inner layer are provided with microporous structures. The skin layer component is modified low-melting point Polyester (PET), Polyethylene (PE), polypropylene (PP) or low-melting point polylactic acid (PLA), and the melting point of the core layer is 250-260 ℃. The skin layer component accounts for 20-40% of the total weight, the inner layer component accounts for 80-60% of the total weight, and the hollowness of the hollow core layer accounts for 20-50% of the sectional area.
Description
Technical Field
The utility model relates to a hollow microporous untwisted composite filament with an elastic sheath core, which can be used for manufacturing fiber nibs, water absorption rods, filter elements, filter materials, liquid storage materials and the like, and belongs to the technical field of special composite fibers.
Background
The conventional untwisted polyester and stretch yarn or untwisted polypropylene filament is heated, cured and dried through plying, gumming, heating and drying to form a bar with capillary water absorption effect, and then the bar is cut off and polished to form the pen point and the water absorption rod.
At present, although the elastic sheath-core untwisted composite filament is available, the fiber nib and the water absorbing rod made of the elastic sheath-core untwisted composite filament have poor water guide performance, heavy weight and low raw material utilization rate.
Disclosure of Invention
Aiming at the defects, the utility model provides the elastic sheath-core hollow microporous untwisted composite filament. The utility model aims to produce a bar stock which can be heated and solidified without glue to form the same hardness, has excellent hydrophilicity, capillary water absorption, hollow microporous water absorption and liquid storage performance, can meet the requirement of subsequent polishing processing of the bar stock, does not stick to a polishing tool, particularly preferably modifies a high-crystalline low-melting-point PET (melting point is 190-210 ℃) or polypropylene PP (polypropylene) material and PE material with a melting point of 150 ℃, PTT, PLA and the like (as long as the melting point of a skin layer is more than 30 ℃ lower than that of a core layer) as the skin layer material of the fiber, uses conventional polyester PET, nylon PA, PLA and the like as the core layer material, firstly spins a low-melting-point skin-core composite pre-drawn filament (POY) on a POY composite spinning production line, then spins the POY on a double-twisting texturing device to carry out double-twisting texturing to form a non-twisting composite textured filament, and then warping and plying the filaments, passing through a heating pipe, heating and solidifying the filaments into bars, melting and solidifying the elastic composite filament skins in the heating process to bond the elastic composite filament skins, and forming a certain porosity at the bent and fluffy part of the untwisted elastic filaments so as to generate stable capillary water absorption and liquid storage effects. The purpose of product application is achieved.
The elastic sheath-core hollow microporous untwisted composite filament is realized by adopting the following technical scheme:
the utility model provides a shell core cavity micropore untwisted yarn complex filament that elasticizes, by many shell core cavity untwisted yarn complex constitutions that elasticizes, shell core cavity untwisted yarn that elasticizes constitute by epidermis, inlayer and cavity sandwich layer, the epidermis cladding is outside the inlayer, is equipped with the cavity sandwich layer in the middle part of the inlayer, has the micropore structure on epidermis and inlayer.
The inner layer is made of Polyester (PET), nylon or polylactic acid (PLA) (degradable material), and the melting point of the inner layer is 250-260 ℃.
The components of the skin layer are modified low-melting point Polyester (PET), Polyethylene (PE), polypropylene (PP) or low-melting point polylactic acid (PLA) (degradable materials), and the melting point of the skin layer is 150-210 ℃.
In the elastic sheath core hollow microporous untwisted composite filament, the surface layer component accounts for 20-40% of the total weight ratio, the inner layer component accounts for 80-60% of the total weight ratio, and the hollowness of the hollow core layer accounts for 20-50% of the sectional area.
The titer range of the elastic sheath-core hollow microporous untwisted composite filament is 167dtex to 660 dtex; the single titer (dpf) of the elastic sheath-core hollow microporous untwisted composite filament is 2-8 dtex.
The surface layer and the inner layer of the elastic sheath-core hollow untwisted composite filament are added with master batches with corresponding colors and corresponding functions according to requirements.
The surface layer and the inner layer selected for the elastic sheath-core hollow microporous untwisted composite filament can realize fiber bonding-grade solidification at the temperature of 140-220 ℃, and simultaneously have stable capillary water absorption, hydrophilicity, water absorption of the hollow microporous core layer and liquid storage performance.
A production method of a hollow microporous untwisted composite filament with an elastic sheath core comprises the following steps:
(1) the raw material of the surface layer is a low-melting-point layer, the drying temperature is 90-120 ℃, the drying time is 8-12 hours, and the water content is less than 50 ppm;
(2) drying the inner layer material to reduce the water content, wherein the water content is less than 30 ppm;
(3) assembling and preparing a composite assembly, namely mounting a sheath-core hollow composite spinneret plate on double-screw composite spinning equipment for spinning production, wherein the titer of a single filament is within the range of 2-4 dtex according to the specification of the filament to be produced and the final requirement;
(4) the skin layer components are melted and extruded by a first screw, enter a first metering pump for accurate metering and then enter a skin layer channel of the spinning assembly; the inner layer components are melted and extruded by a second screw, enter a second metering pump for accurate metering and then enter an inner layer channel of a spinning assembly, the two components are compounded into a melt with a sheath-core structure on a spinneret plate provided with a plurality of spinneret holes after passing through respective channels, and a plurality of nascent fibers with sheath-core hollow structures are obtained by extrusion through a sheath-core hollow compound spinneret plate; the obtained nascent fiber enters a side-blown cooling window for cooling and oiling, then enters a channel, is subjected to tension adjustment through a wire guide disc, and is wound through a high-speed winding device to prepare the POY sheath-core hollow composite fiber;
(5) the POY sheath-core hollow composite fiber is balanced for a certain time, is fed onto a double-twist texturing machine, is heated by a first hot box and a second hot box on the texturing machine, and is subjected to double-twist texturing compounding to form a textured sheath-core hollow microporous untwisted composite filament, wherein the drafting multiple during texturing is 1.6-1.8 times, and the texturing D/Y ratio is 1.5-3 and is controlled to meet the capillary requirement of a water absorption rod; the temperature of the first hot box and the second hot box on the texturing machine is set to be 120-150 ℃.
The hollow microporous untwisted composite filament with the elastic sheath core is applied to the manufacture of water absorption rods, filter elements, filter materials and liquid storage materials.
The method for manufacturing the water absorbing rod, the filter element, the filtering material and the liquid storage material by using the hollow microporous untwisted composite filament with the elastic sheath core comprises the steps of warping and plying the hollow microporous untwisted composite filament with the elastic sheath core, wherein the number of the plying is determined according to the diameters of the water absorbing rod, the filter element, the filtering material and the liquid storage material, the plying is performed by passing through a heating pipe and heating and solidifying the plying into a bar, the heating temperature is 160-230 ℃, the solidifying time is 30-120 seconds, the skins of the hollow untwisted composite filament with the elastic sheath core are melted and solidified to be mutually bonded in the heating process, the bent part of the untwisted elastic filament forms a certain porosity and the hollow core layer of the hollow microporous untwisted composite filament with the elastic sheath core, so that the stable capillary water absorbing effect and the liquid storage effect are generated, a fiber product manufactured by using the material not only has the stable capillary effect among fibers, but also has a plurality of micro micropores in each fiber, the water absorption effect is better, the weight of the product is only 40-60% of that of the common fiber, the various performances of the product are greatly improved, and the purpose of product application is achieved
The utility model relates to a hollow microporous untwisted composite filament with an elastic sheath core. The utility model aims to produce a bar material which does not need glue, can be heated and cured to form the same hardness, and the bar material needs to keep excellent hydrophilicity, capillary water absorbability, hollow core layer water absorbability and liquid storage performance, and simultaneously can meet the requirement of the subsequent polishing processing of the bar material and does not stick to a polishing tool. The inner layer component is terylene (PET), nylon or polylactic acid (PLA) (degradable material), and the melting point of the skin layer is 150-210 ℃. The skin layer component is modified low-melting point Polyester (PET), Polyethylene (PE), polypropylene (PP) or low-melting point polylactic acid (PLA) (degradable material), and the melting point of the inner layer is 250-260 ℃. The utility model particularly preferably modifies a high-crystalline low-melting-point PET (melting point is 190-210 ℃) or polypropylene PP (polypropylene) material with melting point of 150 ℃ as a skin layer material of the fiber, uses a conventional polyester PET as an inner layer material, firstly spins into low-melting-point sheath-core composite pre-drawn filament (POY) on a POY composite spinning production line, then spins on a double-twist texturing device, carries out double-twist texturing to form non-twist composite textured filament, then warps and plys the filament, passes through a heating pipe to carry out heating and thermosetting to form a bar stock, melts and solidifies the skin layers of the textured composite filament in the heating process to mutually bond, the non-twist textured filament fiber bends and fluffs to form a certain porosity, and stable capillary water absorption effect, hollow water absorption and liquid storage performance are generated, thereby achieving the purpose of product application.
The utility model relates to a production and application of an elastic sheath-core hollow microporous untwisted composite filament, which has no harmful substance in the whole production process, and the produced finished product is healthy and environment-friendly in the use process.
Drawings
The utility model will be further explained with reference to the drawings, in which:
FIG. 1 is a schematic representation of a cross-section of a single elasticized sheath-core hollow untwisted filament of an elasticized sheath-core hollow microporous untwisted composite filament of the present invention.
Detailed Description
Referring to the attached figure 1, the hollow microporous untwisted composite filament with the elastic sheath core is formed by compounding a plurality of hollow untwisted filaments with the elastic sheath core, the hollow untwisted filaments with the elastic sheath core are formed by a skin layer 1, an inner layer 2 and a hollow core layer 3, the skin layer 1 is coated outside the inner layer 2, and the hollow core layer 3 is arranged in the middle of the inner layer 2. The skin layer 1 and the inner layer 2 have a microporous structure.
The inner layer 2 is made of Polyester (PET), nylon or polylactic acid (PLA) (degradable material), and the melting point of the inner layer 2 is 250-260 ℃.
The components of the skin layer 1 are modified low-melting point terylene (PET), Polyethylene (PE), polypropylene (PP) or low-melting point polylactic acid (PLA) (degradable material), and the melting point of the skin layer 1 is 150-210 ℃.
In the elastic sheath core hollow microporous untwisted composite filament, the surface layer 1 accounts for 20-40% of the total weight ratio, the inner layer 2 accounts for 80-60% of the total weight ratio, and the hollowness of the hollow core layer 3 accounts for 20-50% of the sectional area.
The titer range of the elastic sheath-core hollow untwisted composite filament is 167dtex to 660 dtex; the single titer (dpf) of the hollow untwisted composite filament with the elastic sheath core is 2-4 dtex.
The surface layer 1 and the inner layer 2 are added with master batches with corresponding colors and corresponding functions according to requirements.
The surface layer 1 and the inner layer 2 selected for the elastic sheath-core hollow microporous untwisted composite filament can realize fiber viscosity-level solidification at the temperature of 140-220 ℃, and have stable capillary water absorption, hydrophilicity, water absorption of the hollow core layer 3 and liquid storage performance.
A production method of a hollow microporous untwisted composite filament with an elastic sheath core comprises the following steps:
(1) the raw material of the surface layer 1 is a low-melting-point layer, the drying temperature is 90-120 ℃, the drying time is 8-12 hours, and the water content is less than 50 ppm;
(2) drying the material of the inner layer 2 to reduce the water content, wherein the water content is less than 30 ppm;
(3) assembling and preparing a composite assembly, namely mounting a sheath-core hollow composite spinneret plate on double-screw composite spinning equipment for spinning production, wherein the titer of a single filament is within the range of 2-4 dtex according to the specification of the filament to be produced and the final requirement;
(4) the components of the epidermal layer 1 are subjected to melt extrusion by a first screw, enter a first metering pump for accurate metering and then enter an epidermal layer channel of the spinning assembly; the inner layer 2 component is melted and extruded by a second screw, enters a second metering pump for accurate metering and then enters an inner layer channel of a spinning assembly, the two components are compounded into a melt with a skin-core structure on a spinneret plate provided with a plurality of spinneret holes after passing through respective channels, and a plurality of nascent fibers with skin-core hollow microporous structures are obtained by extrusion through a skin-core hollow compound spinneret plate; the obtained nascent fiber enters a side-blown cooling window for cooling and oiling, then enters a channel, is subjected to tension adjustment through a wire guide disc, and is wound through a high-speed winding device to prepare the POY sheath-core hollow composite fiber;
(5) the POY sheath-core hollow microporous composite fiber is balanced for a certain time, is fed onto a double-twist texturing machine, is heated by a first hot box and a second hot box on the texturing machine, and is subjected to double-twist texturing compounding to form a textured sheath-core hollow microporous untwisted composite filament, wherein the drafting multiple during texturing is 1.6-1.8 times, and the texturing D/Y ratio is 1.5-3 and is controlled to meet the capillary requirement of a water absorption rod; the temperature of the first hot box and the second hot box on the texturing machine is set to be 120-150 ℃.
The hollow microporous untwisted composite filament with the elastic sheath core is applied to the manufacture of water absorption rods, filter elements, filter materials and liquid storage materials.
The method for manufacturing the water absorbing rod, the filter element, the filtering material and the liquid storage material by using the hollow microporous untwisted composite filament with the elastic sheath core comprises the steps of warping and plying the hollow microporous untwisted composite filament with the elastic sheath core, wherein the number of the plying is determined according to the diameters of the water absorbing rod, the filter element, the filtering material and the liquid storage material, the hollow microporous untwisted composite filament with the elastic sheath core passes through a heating pipe to be heated and solidified into a bar, the heating temperature is 160-230 ℃, the solidification time is 30-120 seconds, the cortex of the hollow microporous untwisted composite filament with the elastic sheath core is melted and solidified to be mutually bonded in the heating process, the bent part of the untwisted elastic filament forms a certain porosity and the hollow microporous core layer of the hollow untwisted composite filament with the elastic sheath core, the stable capillary water absorption effect and the liquid storage effect are generated, and the purpose of product application is achieved
Example (b):
the utility model provides a shell core cavity micropore untwisted yarn complex filament that adds bullet is become by many shell core cavity untwisted yarn complex constitutions that add bullet, shell core cavity untwisted yarn that adds bullet comprise epidermis 1, inlayer 2 and cavity sandwich layer 3, epidermis 1 cladding is outside inlayer 2, and inlayer 2 middle part is equipped with cavity sandwich layer 3. The skin layer 1 and the inner layer 2 have a microporous structure. The inner layer 2 component is Polyester (PET), the surface layer component is modified low-melting point Polyester (PET) or polypropylene (PP) material, the melting point of the surface layer is 150-210 degrees, and the melting point of the inner layer is 250-260 degrees.
The elastic sheath-core hollow microporous untwisted composite filament comprises 20-40% of the components of the surface layer and 80-60% of the components of the inner layer.
The surface layer material of the hollow microporous untwisted composite filament with the elastic sheath core is modified high-crystalline low-melting-point polyester PET, and the elastic sheath core can meet the elastic requirements.
The titer range of the elastic sheath-core hollow microporous untwisted composite filament is 167dtex to 660 dtex.
The hollow microporous untwisted composite filament with the elastic sheath core has to be 2-4 dtex of single fiber number (dpf).
The surface layer and the inner layer of the elastic skin-core hollow microporous untwisted composite filament can be added with master batches and anti-aging master batches with corresponding colors and corresponding functions according to requirements.
The surface layer and the inner layer selected for the elastic sheath-core hollow microporous untwisted composite filament can realize fiber viscosity-level solidification at the temperature of 140-220 ℃, and have stable capillary water absorption, hydrophilicity, water absorption of the hollow core layer 3 and liquid storage performance.
The melting point and hardness of the selected surface layer material of the hollow microporous untwisted composite filament with the elastic sheath core can well meet the requirements of polishing the rear part of the pen point.
A production method of an elasticated skin-core hollow microporous untwisted composite filament comprises the following steps:
the utility model is carried out on double-screw composite spinning equipment and a double-twisting-direction elasticizer, and the whole production process is as follows
1. Modification of the raw material of the surface layer 1, common modified low-melting-point polyester PET on the market cannot be elasticated, low-melting-point PET must be re-modified, a nucleating agent PPT plastic raw material is added to serve as the nucleating agent, re-modification is carried out, rapid crystallization can be carried out, then drying treatment is carried out on the modified raw material, the drying temperature is 80-100 ℃, and the drying time is 8-12 hours. The water content is less than 50 PPM; the addition amount of the PPT plastic raw material serving as the nucleating agent accounts for 5-20% of the total amount of the raw materials of the skin layer.
The polypropylene (PP) material was not treated.
2. Crystallizing and drying the material of the inner layer 2 by a conventional common method, wherein the water content is less than 30 PPM;
3. assembling and preparing a composite component, namely mounting a sheath-core hollow composite spinneret plate on double-screw composite spinning equipment, and selecting a spinneret plate with a certain hole number within the range of 2-4 dtex according to the specification of the yarn to be produced and the final single yarn fineness (dpf) to be met.
4. The components of the skin layer 1 are subjected to melt extrusion by a first screw, then enter a first metering pump for accurate metering and then enter a skin layer channel of a skin-core spinning assembly; and the inner layer 2 components are subjected to melt extrusion by a second screw, enter a second metering pump for accurate metering and then enter a core layer channel of a sheath-core spinning component, are compounded into fibers with a sheath-core structure on a spinneret plate provided with a plurality of spinneret holes after passing through respective channels, and are extruded by the spinneret plate to obtain a plurality of nascent fibers with the sheath-core structure. And the obtained nascent fiber enters a side-blowing cooling window for cooling and oiling, then enters a channel, is subjected to tension adjustment through a yarn guide disc, and is wound through a high-speed winding device to prepare the POY skin-core composite pre-drawn yarn.
The skin layer 1 component material and the inner layer 2 component material contain color master batches and functional master batches.
5. The POY skin-core composite pre-drawn yarns are balanced for a certain time, are heated by a first hot box and a second hot box on the texturing machine in a double-twist texturing direction to be textured and compounded to form textured skin-core hollow microporous untwisted composite filaments, the drafting multiple is 1.6-1.8 times during texturing, and the texturing B/Y ratio is 1.5-3 and is controlled to meet the capillary requirement of a water absorption rod. The temperature of the first hot box and the second hot box on the texturing machine is set to be 120-150 ℃.
An elastic sheath-core hollow microporous untwisted composite filament is used for making pen point, water-absorbing rod, filter core, filter material and liquid-storing material.
The method for manufacturing the fiber pen point, the water absorption rod, the filter element, the filtering material and the liquid storage material by adopting the hollow microporous untwisted composite filament with the elastic sheath core comprises the following steps:
warping and plying the hollow microporous untwisted composite filament with the elastic sheath core, wherein the number of the plied filaments is determined according to the diameters of the pen point, the water absorbing rod, the filter element, the filtering material and the liquid storage material, the filaments pass through a heating pipe to be heated and cured into the bar, the heating temperature is 160-230 ℃, the curing time is 30-120 seconds, the epidermis layers of the hollow microporous untwisted composite filament with the elastic sheath core are melted and cured and mutually bonded in the heating process, the bent parts of the untwisted elastic filaments form a certain porosity and a hollow core layer of the hollow untwisted composite filament with the elastic sheath core, and a stable capillary water absorption effect and a liquid storage effect are generated, so that the purpose of product application is achieved
The specific embodiments described herein are merely illustrative of the products of the utility model. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the utility model as defined in the appended claims.
Claims (5)
1. The hollow microporous untwisted composite filament yarn with the elastic sheath core is characterized by being formed by compounding a plurality of hollow untwisted filament yarns with the elastic sheath core, wherein the hollow untwisted filament yarns with the elastic sheath core are formed by a surface layer, an inner layer and a hollow core layer, the surface layer is wrapped outside the inner layer, the hollow core layer is arranged in the middle of the inner layer, and microporous structures are arranged on the surface layer and the inner layer.
2. The hollow microporous untwisted composite filament with the elastic sheath core according to claim 1, wherein the inner layer is made of Polyester (PET), nylon or polylactic acid (PLA), and has a melting point of 250-260 ℃.
3. The hollow microporous untwisted composite filament with the elastic sheath core according to claim 1, wherein the skin layer component is modified low-melting Polyester (PET), Polyethylene (PE), polypropylene (PP) or low-melting polylactic acid (PLA), and the melting point of the skin layer is 150-210 ℃.
4. The elastic sheath-core hollow microporous untwisted composite filament of claim 1, wherein: the skin layer component accounts for 20-40% of the total weight, the inner layer component accounts for 80-60% of the total weight, and the hollowness of the hollow core layer accounts for 20-50% of the sectional area.
5. The elastic sheath-core hollow microporous untwisted composite filament of claim 1, wherein: the titer range of the elastic sheath-core hollow microporous untwisted composite filament is 167dtex to 660 dtex; the single titer of the hollow untwisted composite filament of the elasticated sheath core is 2-4 dtex.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114182391A (en) * | 2022-01-20 | 2022-03-15 | 无锡盛烨特邦新材料科技有限公司 | Elastic sheath-core hollow microporous untwisted composite filament and production method and application thereof |
| CN116024698A (en) * | 2023-02-10 | 2023-04-28 | 无锡盛烨特邦新材料科技有限公司 | Three-layer co-extrusion multi-layer sheath-core untwisted composite filament, and production method and application thereof |
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2022
- 2022-01-20 CN CN202220153221.2U patent/CN216947301U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114182391A (en) * | 2022-01-20 | 2022-03-15 | 无锡盛烨特邦新材料科技有限公司 | Elastic sheath-core hollow microporous untwisted composite filament and production method and application thereof |
| WO2023138274A1 (en) * | 2022-01-20 | 2023-07-27 | 无锡盛烨特邦新材料科技有限公司 | Textured skin-core hollow microporous untwisted composite filament yarn, production method therefor, and application thereof |
| CN116024698A (en) * | 2023-02-10 | 2023-04-28 | 无锡盛烨特邦新材料科技有限公司 | Three-layer co-extrusion multi-layer sheath-core untwisted composite filament, and production method and application thereof |
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