CN213283818U - Paper diaper production device containing non-yarn-splitting multi-strand spandex yarn - Google Patents
Paper diaper production device containing non-yarn-splitting multi-strand spandex yarn Download PDFInfo
- Publication number
- CN213283818U CN213283818U CN202020596794.3U CN202020596794U CN213283818U CN 213283818 U CN213283818 U CN 213283818U CN 202020596794 U CN202020596794 U CN 202020596794U CN 213283818 U CN213283818 U CN 213283818U
- Authority
- CN
- China
- Prior art keywords
- yarn
- spinning
- strand
- spandex
- dividing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Absorbent Articles And Supports Therefor (AREA)
- Artificial Filaments (AREA)
Abstract
The utility model relates to a diaper production field discloses a diaper apparatus for producing that contains the stranded spandex yarn of not dividing the yarn, including stranded spandex yarn production unit and the yarn-non-woven fabrics compound unit of not dividing the yarn, the yarn-non-woven fabrics compound unit of not dividing the yarn includes two kinds of schemes: scheme one, the passive unwinding non-yarn-splitting mode: the non-yarn-splitting yarn-non-woven fabric composite unit sequentially comprises a yarn winding drum, a yarn guide wheel, an orientation groove and a single-head hot melt adhesive nozzle according to the yarn conveying direction; scheme two, the active unwinding non-yarn-dividing mode: the non-yarn-splitting yarn-non-woven fabric composite unit sequentially comprises a yarn winding drum, an unwinding roller, a yarn guide wheel, an orientation groove and a single-head hot melt adhesive nozzle according to the yarn conveying direction. The utility model discloses contain stranded side by side, thinner monofilament in the thick denier spandex yarn of production, be applied to back in the disposable diaper with it, it is bigger with the area of contact of skin, and the comfort is better. Meanwhile, the bonding strength between the yarns and the non-woven fabric is higher.
Description
Technical Field
The utility model relates to a disposable diaper production field especially relates to a disposable diaper apparatus for producing of stranded spandex yarn that contains not divides the yarn.
Background
The existing production technology of single-strand thick denier spandex yarn mainly comprises the following steps: the polyurethane solution from the polyurethane solution supply tank reaches a spinning position after being filtered by a solution filter; the yarn is precisely metered by a spinning metering pump at a spinning position, then is sprayed out to a spinning channel through a spinneret plate with a certain hole number, and after the solvent is removed by evaporation, the monofilament is false-twisted and clasped into a strand of yarn by a false twister. Then the strand of yarn passes through a feeding roller group, the yarn is wound on a bobbin through a spandex yarn winding machine after being oiled on a roller to form spandex yarn cakes, and only one strand of wrap-around spandex yarn is arranged on each spandex yarn cake.
The use technology of the single-strand coarse denier spandex yarn produced by the existing paper diaper mainly comprises the following steps: at present, each spandex yarn feeding position of a paper diaper machine is fed with one strand of spandex yarn, and each strand of spandex yarn corresponds to one glue sprayer. For example, a thicker 620Dtex yarn is adhered and sandwiched between two layers of non-woven fabric by glue, and the spandex yarn is tensioned to be attached to the skin of a baby after the diaper is put on a child. The thicker spandex yarn and the smaller contact area with the skin make the baby feel tight, so the paper diaper production tends to use the thinner spandex yarn. For example, 560 dtex spandex yarn is used instead of 620dtex yarn to make the diaper more flexible. But the proposal leads the baby to feel more comfortable, and simultaneously, the overall tension of the paper diaper is reduced, and the situation that the design requirement of the paper diaper cannot be met is also caused.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a paper diaper production device containing multi-strand spandex yarns without yarn splitting, the device of the utility model firstly produces thick denier spandex yarns containing multi-strand parallel and thinner monofilaments, and then is applied to the paper diaper to be bonded with non-woven fabrics, compared with the traditional single-strand thick denier yarns, the contact area with the skin is larger, and the comfortable sensation is better; meanwhile, the bonding strength between the yarns and the non-woven fabric is higher.
The utility model discloses a concrete technical scheme does:
the paper diaper production device comprises a multi-strand spandex yarn production unit and a non-yarn-dividing yarn-non-woven fabric composite unit, wherein the non-yarn-dividing yarn-non-woven fabric composite unit comprises two parallel schemes:
scheme one, the passive unwinding non-yarn-splitting mode: the non-yarn-splitting yarn-non-woven fabric composite unit sequentially comprises a yarn winding drum, a yarn guide wheel, a directional groove and a single-head hot melt adhesive nozzle according to the yarn conveying direction.
Scheme two, the active unwinding non-yarn-dividing mode: the non-yarn-splitting yarn-non-woven fabric composite unit sequentially comprises a yarn winding drum, an unwinding roller, a yarn guide wheel, an orientation groove and a single-head hot melt adhesive nozzle according to the yarn conveying direction.
The multi-strand spandex yarn production unit is used for producing thick denier spandex yarns containing parallel multi-strand yarns. The yarn is then bonded between two layers of nonwoven fabric by a non-split yarn-nonwoven fabric composite unit. In the utility model, the use of the heavy denier spandex yarn containing parallel multi-ply yarn has two modes: the passive unwinding non-yarn-dividing mode and the active unwinding non-yarn-dividing mode.
Passive unwinding non-yarn-splitting and active unwinding non-yarn-splitting modes: the situation that the spandex yarn of the diaper produced by the passive unwinding non-yarn-splitting mode and the active unwinding non-yarn-splitting mode is clamped between non-woven fabrics is shown in figures 8-9. Compared with one 620dtex or one 865dtex yarn (fig. 10-11) in the prior art, the two 310 dtex yarns or 3 288 dtex yarns have flatter yarn sections to be attached to the skin of the baby, have larger contact areas, and the pressure of the spandex yarn is dispersed and reduced. Pressure P of 620dtexNew∶PNew＝0.707POriginal sourceThe baby feels the paper diaper softer. The theoretical calculation of the pressure change felt by a 620dtex baby is as follows:
according to the formula A ═ pi R2，
In the formula:
Doriginal source-the diameter of the original 620dtex singles yarn;
DnewDiameter of each strand of the new 620dtex doubled yarn
Substituting formula (I) into formula (II) according to P ═ F/S
In the formula:
Poriginal source-the pressure felt by the original 620dtex single strand baby;
Pnew-pressure felt by the new 620dtex twins baby;
l-the length of the yarn section under consideration.
The pressure P of the 865dtex new technology is also calculatedNew：
The baby feels the paper diaper to be softer. Compared with single-strand thick denier yarns, the thick denier double-strand yarns and the thick denier double-strand yarns have more glue bonding areas, the glue bonding efficiency is improved, and the creep property of the disposable diaper is improved.
Preferably, the multi-strand spandex yarn production unit comprises a polyurethane solution supply tank, a solution filter, a spinning assembly, a false twister, a roller assembly and a winding mechanism which are connected in sequence.
The false twister bracket is positioned below the spinning assembly, at least two parallel false twisters are arranged on the false twister bracket, the false twisters generate vortex airflow, and the air outlets of the false twisters are along the direction of the yarns; and a yarn guide groove is arranged at any position among the false twister, the roller assembly and the winding mechanism.
Preferably, the spinning assembly comprises a spinning channel, and a spinning metering pump and a spinneret plate which are arranged in the spinning channel in sequence according to the material flow direction.
Preferably, a hot air circulation component is arranged in the spinning channel and is connected with a solvent recovery component arranged outside the spinning channel.
Preferably, the solvent recovery assembly comprises a solvent recovery buffer tank and a solvent storage tank which are sequentially connected with the hot air circulation assembly.
Preferably, the outer side of the spinning channel is provided with a heat-insulating jacket.
Preferably, the roller assembly comprises at least two feed rollers connected in series and a oiling roller arranged between two adjacent feed rollers.
Preferably, the thread guide groove is arranged behind the oiling roller.
The advantage of setting up the cohesion point after oiling lies in, if oiling again after plying, can lead to on the contact surface of adjacent single yarn can't fully oil.
Preferably, the thread guide groove is arranged between the feeding roller at the tail end and the winding mechanism.
Preferably, the thread guide groove is arranged between the feeding roller at the tail end and the previous feeding roller or oiling roller.
As described in the background, existing single strand heavy denier spandex yarns contain only one single yarn, and for added strength, thicker single yarns are typically used, such as 620 dtex. In the production of the paper diaper, the spandex yarn is laid between two layers of non-woven fabrics and then bonded by glue. When the diaper is worn on a child, the spandex yarn is tensioned and is attached to the skin of the baby. The thick spandex yarn and the small contact area with the skin can make the baby feel tight and have poor comfort. Therefore, the utility model discloses the spandex yarn that contains stranded (must be the side by side arrangement), thinner single yarn is adopted ingeniously to replace single strand coarse denier spandex yarn, can effectively increase the area of contact between yarn and the skin, not only can effectively promote the comfort, but also can increase the area of contact of glue and yarn simultaneously moreover to increase the joint strength of yarn and non-woven fabrics, and reducible glue quantity reduces the contact risk of glue and skin. It should be noted that the strands of the single yarn must be in side-by-side engagement rather than in twisted engagement, otherwise the contact area enhancement is insignificant.
The utility model discloses well stranded spandex yarn production unit's main technical essential lies in: the filaments from the spinneret are false twisted by a plurality of spray false twisters arranged in parallel on a false twister support, a plurality of filament bundles are collected, a plurality of parallel fine single yarns (for example, 16 filaments per bundle) are subjected to solvent removal, and then (for example, 16 filaments per bundle) are subjected to oiling and winding. Wherein in any process between the false twister and the winding, the single yarns are plied to be compounded into the coarse denier spandex yarn containing the parallel multi-strand yarns. That is to say, the utility model discloses earlier through with the monofilament respectively the cohesion for stranded single yarn, then with stranded single yarn cohesion for one strand, obtain the coarse denier spandex yarn that contains stranded yarn side by side.
The utility model discloses a multi-strand spandex yarn production unit except can effectively increasing the area of contact of yarn and non-woven fabrics, skin, its technological effect still lies in: when the monofilament is embraced into a plurality of strands of thin single yarns, the surface area of the monofilament is increased, so that the solvent is more easily volatilized under the action of hot air, the content of the solvent in a yarn product is reduced, the quality of the yarn can be improved, and the monofilament is safer to skin.
In the above device, the key points are: firstly, at least two parallel false twisters are arranged on a false twister bracket, the false twisters generate vortex air flow, and single yarns are respectively embraced into multi-strand single yarns under the action of multi-strand vortex air flow at air outlets of the false twisters along the yarn direction. And secondly, arranging a yarn guide groove at any position among the false twister, the roller assembly and the winding mechanism to hold a plurality of strands of single yarns into one strand. The utility model discloses only need on current production line reform transform a little can, with low costs, the practicality is strong.
Compared with the prior art, the beneficial effects of the utility model are that:
1) compare with the thick denier spandex silk of the same denier number, the utility model discloses when the thick denier spandex yarn that contains stranded yarn side by side of production is applied to the diaper production, has very big area of contact between yarn and the skin, and is less to the pressure of skin, can not cause excessive tight and tie, and because the single yarn is thinner, on the non-woven fabrics surface comparatively gently, the comfort is strong.
2) Compared with the coarse denier spandex yarn with the same denier number, the utility model discloses the coarse denier spandex yarn that contains side by side multistrand yarn has the lower unevaporated solvent (DMAc) residual content of coarse denier spandex yarn than the single strand, higher yarn elastic restoring force and higher yarn breaking strength, elongation at break. For example: the DMAc residual content, elastic recovery force, breaking strength and elongation at break data of the 620Dtex, 865Dtex multistrand yarn products and the single yarn products are compared in the detailed working section.
3) The double-strand or multi-strand spandex silk is used on a paper diaper production machine station which is produced in a passive unwinding mode without separation. But because the number of the spandex holding yarns is large, the spandex yarns have larger bonding area with glue, so that the yarns and the non-woven fabric are firmly bonded, and creep data is improved. For example: the creep data of spandex yarn after 620Dtex, 865Dtex multi-ply yarn products and single strand yarn products are used in diaper are compared and detailed in the examples section.
Drawings
FIG. 1 is a schematic view of a passively unwound non-split yarn-nonwoven composite unit according to example 1;
FIG. 2 is a schematic view of an actively unwinding non-split yarn-nonwoven composite unit of example 2;
FIG. 3 is a schematic view of a multi-strand spandex yarn production unit in example 1;
FIG. 4 is a schematic view of a multi-strand spandex yarn production unit in example 2;
FIG. 5 is a schematic view of a multi-strand spandex yarn production unit in example 3;
FIG. 6 is a schematic view of a multi-strand spandex yarn production unit in example 4;
FIG. 7 is a schematic representation of a unit for producing a single heavy denier spandex yarn of comparative example 1;
FIG. 8 is a schematic view showing the structure of the nonwoven fabric and the yarn in the disposable diaper obtained in example 1;
FIG. 9 is a schematic view showing the structure of the nonwoven fabric and the yarn in the disposable diaper obtained in example 3;
FIG. 10 is a schematic view showing the structure of the nonwoven fabric and the yarn in the disposable diaper obtained in comparative example 1;
FIG. 11 is a schematic view showing the structure of the nonwoven fabric and the yarn in the disposable diaper obtained in comparative example 2.
The reference signs are: the device comprises a polyurethane solution supply tank 1, a solution filter 2, a spinning assembly 3, a false twister bracket 4, a roller assembly 5, a winding mechanism 6, a yarn guide groove 7, a solvent recovery buffer tank 8, a solvent storage tank 9, a heat preservation jacket 10, yarns 11, non-woven fabrics 12, a spinning channel 31, a spinning metering pump 32, a spinneret plate 33, a hot air circulation assembly 34, a false twister 41, a feeding roller 51, an oiling roller 52, a yarn winding drum 100, a yarn guide wheel 101, a single-end hot melt adhesive nozzle 102, a directional groove 103 and an unwinding roller 104.
Detailed Description
The present invention will be further described with reference to the following examples.
General examples
A paper diaper production device containing non-yarn-splitting multi-strand spandex yarns comprises a multi-strand spandex yarn production unit and a non-yarn-splitting yarn-non-woven fabric composite unit.
The multi-strand spandex yarn production unit comprises a polyurethane solution supply tank 1, a solution filter 2, a spinning assembly 3, a false twister bracket 4, a roller assembly 5 and a winding mechanism 6 which are connected in sequence. The false twister bracket is positioned below the spinning assembly, at least two parallel false twisters 41 are arranged on the false twister bracket, the false twisters generate vortex airflow, and the air outlets of the false twisters are along the yarn direction; and a yarn guide groove 7 is arranged at any position among the false twister, the roller assembly and the winding mechanism.
Preferably, the spinning assembly comprises a spinning channel 31, and a spinning metering pump 32 and a spinneret 33 which are arranged in the spinning channel in sequence according to the material flow direction. And a hot air circulating component 34 is arranged in the spinning channel and is connected with a solvent recovery component arranged outside the spinning channel. The solvent recovery assembly comprises a solvent recovery buffer tank 8 and a solvent storage tank 9 which are sequentially connected with the hot air circulation assembly. And a heat-insulating jacket 10 is arranged on the outer side of the spinning channel. The roller assembly comprises at least two feed rollers 51 connected in series and a top-finish roller 52 arranged between two adjacent feed rollers.
The non-yarn-splitting yarn-non-woven fabric composite unit comprises two parallel schemes:
scheme one, the passive unwinding non-yarn-splitting mode: the device comprises, in sequence in the direction of yarn feed, a yarn drum 100, a yarn guide wheel 101, a directional slot 103 and a single-head hot melt adhesive nozzle 102.
Scheme two, the active unwinding non-yarn-dividing mode: the device comprises a yarn winding drum 100, an unwinding roller 104, a yarn guide wheel 101, an orientation groove 103 and a single-head hot melt adhesive nozzle 102 in sequence according to the yarn conveying direction.
Example 1
A method for producing a heavy denier spandex yarn containing side-by-side multistrand yarns comprises the following steps:
1) filtering the polyurethane solution, enabling the polyurethane solution to reach a spinning position, spraying the polyurethane solution from a spinneret plate after metering to form a plurality of monofilaments in a spinning channel, and carrying out cohesion on the plurality of monofilaments in the spinning channel into two strands of single yarns (310 dtex/16 f) under the action of vortex air flow sprayed by a false twister positioned below the spinning channel; the monofilaments and the single yarns are heated in the spinning shaft to volatilize the solvent.
2) The monofilament is output from the spinning channel and sequentially passes through a false twister, oiling, parallel plying and winding to obtain the coarse denier spandex yarn (620 dtex) containing parallel multi-strand yarn.
The upper production method is realized by a multi-strand spandex yarn production unit, as shown in fig. 3, which comprises a polyurethane solution supply tank 1, a solution filter 2, a spinning assembly 3, a false twister bracket 4, a roller assembly 5 and a winding mechanism 6, which are connected in sequence. The false twister bracket is positioned below the spinning assembly, two parallel false twisters 41 are arranged on the false twister bracket, the false twisters generate vortex airflow, and the air outlets of the vortex airflow face to monofilaments coming out of a spinneret plate along the yarn direction.
Specifically, the spinning assembly comprises a spinning channel 31, and a spinning metering pump 32 and a spinneret 33 which are arranged in the spinning channel in sequence according to the material flow direction. And a hot air circulating component 34 is arranged in the spinning channel and is connected with a solvent recovery component arranged outside the spinning channel. The solvent recovery assembly comprises a solvent recovery buffer tank 8 and a solvent storage tank 9 which are sequentially connected with the hot air circulation assembly. And a heat-insulating jacket 10 is arranged on the outer side of the spinning channel.
The roller assembly comprises three feed rollers 51 connected in series and a top-oiling roller 52 arranged between the first two adjacent feed rollers. A thread guide groove 7 is arranged between the two rear feeding rollers.
The application of the obtained spandex yarn in the production of the paper diaper adopts a passive unwinding non-yarn-splitting mode, and comprises the following steps: the yarn 11 containing parallel multi-ply yarn is conveyed between two layers of non-woven fabrics 12 to be arranged, and the yarn and the two layers of non-woven fabrics are bonded and fixed through glue. The resulting product structure is shown in fig. 8.
The above operation is performed by a non-splitting yarn-non-woven fabric composite unit, which, as shown in fig. 1, includes, in order in the yarn feeding direction, a yarn drum 100, a yarn guide roller 101, a directional groove 103, and a single-headed hot melt adhesive nozzle 102.
Example 2
A method for producing a heavy denier spandex yarn containing side-by-side multistrand yarns comprises the following steps:
1) filtering the polyurethane solution, enabling the polyurethane solution to reach a spinning position, spraying the polyurethane solution from a spinneret plate after metering to form a plurality of monofilaments in a spinning channel, and carrying out cohesion on the plurality of monofilaments in the spinning channel into two strands of single yarns (310 dtex/16 f) under the action of vortex air flow sprayed by a false twister positioned below the spinning channel; the monofilaments and the single yarns are heated in the spinning shaft to volatilize the solvent.
2) The monofilament is output from the spinning channel and sequentially passes through a false twister, oiling, parallel plying and winding to obtain the coarse denier spandex yarn (620 dtex) containing parallel multi-strand yarn.
The above production method is realized by a multi-strand spandex yarn production unit, as shown in fig. 4, comprising a polyurethane solution supply tank 1, a solution filter 2, a spinning assembly 3, a false twister bracket 4, a roller assembly 5 and a winding mechanism 6 which are connected in sequence. The false twister bracket is positioned below the spinning assembly, two parallel false twisters 41 are arranged on the false twister bracket, the false twisters generate vortex airflow, and the air outlets of the false twisters are along the yarn direction.
Specifically, the spinning assembly comprises a spinning channel 31, and a spinning metering pump 32 and a spinneret 33 which are arranged in the spinning channel in sequence according to the material flow direction. And a hot air circulating component 34 is arranged in the spinning channel and is connected with a solvent recovery component arranged outside the spinning channel. The solvent recovery assembly comprises a solvent recovery buffer tank 8 and a solvent storage tank 9 which are sequentially connected with the hot air circulation assembly. And a heat-insulating jacket 10 is arranged on the outer side of the spinning channel. The roller assembly comprises two feed rollers 51 connected in series and a top-oiling roller 52 arranged between the first two adjacent feed rollers. A thread guide groove 7 is arranged between the last feeding roller and the winding mechanism.
The application of the obtained spandex yarn in the production of the paper diaper adopts an active unwinding non-yarn-dividing mode, and comprises the following steps: the yarn 11 containing parallel multi-ply yarn is conveyed between two layers of non-woven fabrics 12 to be arranged, and the yarn and the two layers of non-woven fabrics are bonded and fixed through glue. The resulting product structure is shown in fig. 8.
The above operation is performed by a non-splitting yarn-non-woven fabric composite unit, as shown in fig. 2, which comprises, in order in the yarn feeding direction, a yarn winding drum 100, an unwinding roller 104, a yarn guide roller 101, a direction guide groove 103, and a single-headed hot melt adhesive nozzle 102.
Example 3
A method for producing a heavy denier spandex yarn containing side-by-side multistrand yarns comprises the following steps:
1) filtering the polyurethane solution, delivering the polyurethane solution to a spinning position, metering the polyurethane solution, spraying the polyurethane solution from a spinneret plate to form a plurality of monofilaments in a spinning channel, and holding the monofilaments in the spinning channel into a three-strand single yarn (288 dtex/16 f) under the action of vortex air flow sprayed by a false twister positioned below the spinning channel; the filaments and/or the single yarn are heated in the spinning shaft to evaporate the solvent.
2) The monofilament is output from the spinning channel and sequentially passes through a false twister, oiling, parallel plying and winding to obtain a coarse denier spandex yarn (865 dtex) containing parallel multi-strand yarn.
The upper production method is realized by a multi-strand spandex yarn production unit, as shown in fig. 5, which comprises a polyurethane solution supply tank 1, a solution filter 2, a spinning assembly 3, a false twister bracket 4, a roller assembly 5 and a winding mechanism 6, which are connected in sequence. The false twister bracket is positioned below the spinning assembly, three parallel false twisters 41 are arranged on the false twisters, the false twisters generate vortex airflow, and the air outlets of the false twisters are along the yarn direction.
Specifically, the spinning assembly comprises a spinning channel 31, and a spinning metering pump 32 and a spinneret 33 which are arranged in the spinning channel in sequence according to the material flow direction. And a hot air circulating component 34 is arranged in the spinning channel and is connected with a solvent recovery component arranged outside the spinning channel. The solvent recovery assembly comprises a solvent recovery buffer tank 8 and a solvent storage tank 9 which are sequentially connected with the hot air circulation assembly. And a heat-insulating jacket 10 is arranged on the outer side of the spinning channel. The roller assembly comprises three feed rollers 51 connected in series and a top-oiling roller 52 arranged between the first two adjacent feed rollers. A thread guide groove 7 is arranged between the two rear feeding rollers.
The application of the obtained spandex yarn in the production of the paper diaper adopts a passive unwinding non-yarn-splitting mode, and comprises the following steps: the yarn 11 containing parallel multi-ply yarn is conveyed between two layers of non-woven fabrics 12 to be arranged, and the yarn and the two layers of non-woven fabrics are bonded and fixed through glue. The resulting product structure is shown in fig. 9.
The above operation is performed by a non-splitting yarn-non-woven fabric composite unit, which, as shown in fig. 1, includes, in order in the yarn feeding direction, a yarn drum 100, a yarn guide roller 101, a directional groove 103, and a single-headed hot melt adhesive nozzle 102.
Example 4
A method for producing a heavy denier spandex yarn containing side-by-side multistrand yarns comprises the following steps:
1) filtering the polyurethane solution, delivering the polyurethane solution to a spinning position, metering the polyurethane solution, spraying the polyurethane solution from a spinneret plate to form a plurality of monofilaments in a spinning channel, and holding the monofilaments in the spinning channel into a three-strand single yarn (288 dtex/16 f) under the action of vortex air flow sprayed by a false twister positioned below the spinning channel; the filaments and/or the single yarn are heated in the spinning shaft to evaporate the solvent.
2) The monofilament is output from the spinning channel and sequentially passes through a false twister, oiling and parallel plying winding to obtain a coarse denier spandex yarn (865 dtex) containing parallel multi-strand yarn.
The upper production method is realized by a multi-strand spandex yarn production unit, as shown in fig. 6, which comprises a polyurethane solution supply tank 1, a solution filter 2, a spinning assembly 3, a false twister bracket 4, a roller assembly 5 and a winding mechanism 6, which are connected in sequence. The false twister bracket is positioned below the spinning assembly, three parallel false twisters 41 are arranged on the false twister bracket, the false twisters generate vortex airflow, and the air outlets of the false twisters are along the yarn direction.
Specifically, the spinning assembly comprises a spinning channel 31, and a spinning metering pump 32 and a spinneret 33 which are arranged in the spinning channel in sequence according to the material flow direction. And a hot air circulating component 34 is arranged in the spinning channel and is connected with a solvent recovery component arranged outside the spinning channel. The solvent recovery assembly comprises a solvent recovery buffer tank 8 and a solvent storage tank 9 which are sequentially connected with the hot air circulation assembly. And a heat-insulating jacket 10 is arranged on the outer side of the spinning channel. The roller assembly comprises two feed rollers 51 connected in series and a top-oiling roller 52 arranged between the first two adjacent feed rollers. A thread guide groove 7 is arranged between the last feeding roller and the winding mechanism.
The application of the obtained spandex yarn in the production of the paper diaper adopts an active unwinding non-yarn-dividing mode, and comprises the following steps: the yarn 11 containing parallel multi-ply yarn is conveyed between two layers of non-woven fabrics 12 to be arranged, and the yarn and the two layers of non-woven fabrics are bonded and fixed through glue. The resulting product structure is shown in fig. 9.
The above operation is performed by a non-splitting yarn-non-woven fabric composite unit, as shown in fig. 2, which comprises, in order in the yarn feeding direction, a yarn winding drum 100, an unwinding roller 104, a yarn guide roller 101, a direction guide groove 103, and a single-headed hot melt adhesive nozzle 102.
Comparative example 1
As shown in fig. 7, comparative example 1 differs from example 1 in that:
1) instead of looping the monofilaments separately into multiple strands of single yarns, all monofilaments are looped into one strand of yarn (620 dtex/32 f);
2) no hugging points are provided in the roller assembly.
The resulting product structure is shown in fig. 10.
Comparative example 2
Comparative example 2 differs from example 2 in that:
1) the single filaments are not respectively clasped into a plurality of strands of single yarns, but all the single filaments are clasped into one strand of yarn (865 dtex/48 f);
2) no hugging points are provided in the roller assembly.
The resulting product structure is shown in fig. 11.
Examples 1-4 and comparative examples 1-2 respectively prepared spandex yarns of different forms and sizes or produced diapers in different manners (only involving a step of bonding a nonwoven fabric to a yarn). Wherein:
a) passive unwinding non-yarn-splitting and active unwinding non-yarn-splitting modes: the situation that the spandex yarn of the paper diaper produced in the passive unwinding non-yarn-splitting mode and the active unwinding non-yarn-splitting mode is clamped between non-woven fabrics is shown as one strand of 620dtex yarn or one strand of 865dtex yarn in figures 10-11, two strands of 310 dtex yarns or 3 strands of 288 dtex yarns have smoother yarn sections which are attached to the skin of a baby, the contact area is larger, the pressure of the spandex yarn is also dispersed, and the pressure is reduced a little. Pressure P of 620dtexNew∶P New＝0.707POriginal sourceThe baby feels the paper diaper to be softer. The theoretical calculation of the pressure change felt by a 620dtex baby is as follows: according to the formula A ═ pi R2，
In the formula:
Doriginal source-the diameter of the original 620dtex singles yarn;
DnewDiameter of each strand of the new 620dtex doubled yarn
Substituting formula (I) into formula (II) according to P ═ F/S
In the formula:
Poriginal source-the pressure felt by the original 620dtex single strand baby;
Pnew-pressure felt by the new 620dtex twins baby;
l-the length of the yarn section under consideration.
The pressure P of the 865dtex new technology is also calculatedNew：
The baby feels the paper diaper to be softer. Compared with single-strand thick denier yarns, the thick denier double-strand yarns and the thick denier double-strand yarns have more glue bonding areas, the glue bonding efficiency is improved, and the creep property of the disposable diaper is improved.
In summary, the following steps:
1) compare with the thick denier polyurethane filament of the same denier number, the utility model discloses when being applied to the paper diaper production, the thick denier polyurethane filament yarn that contains stranded yarn side by side has very big area of contact between yarn and the skin, and is less to the pressure of skin, can not cause excessive tight and tie, and because the single yarn is thinner, comparatively mild on the non-woven fabrics surface, the comfort is strong.
2) Compared with the coarse denier spandex yarn with the same denier number, the utility model discloses the coarse denier spandex yarn that contains side by side multistrand yarn has the lower unevaporated solvent (DMAc) residual content of coarse denier spandex yarn than the single strand, higher yarn elastic restoring force and higher yarn breaking strength, elongation at break.
3) The double-strand or multi-strand spandex silk is used on a paper diaper production machine station which is produced in a passive unwinding mode without separation. But because the number of the spandex holding yarns is large, the spandex yarns have larger bonding area with glue, so that the yarns and the non-woven fabric are firmly bonded, and creep data is improved.
The raw materials and the equipment used in the utility model are common raw materials and equipment in the field if no special description is provided; the methods used in the present invention are conventional methods in the art unless otherwise specified.
The above, only be the utility model discloses a preferred embodiment, it is not right the utility model discloses do any restriction, all according to the utility model discloses the technical entity all still belongs to any simple modification, change and equivalent transformation of doing above embodiment the utility model discloses technical scheme's protection scope.
Claims (10)
1. The utility model provides a paper diaper apparatus for producing that contains not strand spandex yarn of dividing, includes the yarn-non-woven fabrics composite unit of strand spandex yarn production unit and not dividing, its characterized in that: the non-yarn-dividing yarn-non-woven fabric composite unit adopts a passive unwinding non-yarn-dividing mode or an active unwinding non-yarn-dividing mode:
the non-yarn-dividing yarn-non-woven fabric composite unit in the passive unwinding non-yarn-dividing mode sequentially comprises a yarn winding drum (100), a yarn guide wheel (101), an orientation groove (103) and a single-head hot melt adhesive nozzle (102) according to the yarn conveying direction;
the yarn-non-woven fabric composite unit for actively unwinding the non-divided yarns in the non-divided yarn mode sequentially comprises a yarn winding drum (100), an unwinding roller (104), a yarn guide wheel (101), an orientation groove (103) and a single-head hot melt adhesive nozzle (102) according to the yarn conveying direction.
2. The production device of claim 1, wherein: the multi-strand spandex yarn production unit comprises a polyurethane solution supply tank (1), a solution filter (2), a spinning assembly (3), a false twister bracket (4), a roller assembly (5) and a winding mechanism (6) which are connected in sequence;
the false twister bracket is positioned below the spinning assembly, at least two parallel false twisters (41) are arranged on the false twister bracket, the false twisters generate vortex airflow, and the air outlets of the false twisters are along the yarn direction; and a yarn guide groove (7) is arranged at any position among the false twister, the roller assembly and the winding mechanism.
3. The production apparatus as claimed in claim 2, wherein: the spinning assembly comprises a spinning channel (31), and a spinning metering pump (32) and a spinneret plate (33) which are arranged in the spinning channel in sequence according to the material flow direction.
4. The production apparatus according to claim 3, wherein: and a hot air circulation component (34) is arranged in the spinning channel and is connected with a solvent recovery component arranged outside the spinning channel.
5. The production apparatus according to claim 4, wherein: the solvent recovery assembly comprises a solvent recovery buffer tank and a solvent storage tank which are sequentially connected with the hot air circulation assembly.
6. The production apparatus according to claim 3, wherein: and a heat-insulating jacket (10) is arranged on the outer side of the spinning channel.
7. The production apparatus as claimed in claim 2, wherein: the roller assembly comprises at least two feed rollers (51) connected in series and a top-oiling roller (52) arranged between two adjacent feed rollers.
8. The production apparatus according to claim 7, wherein: the yarn guide groove (7) is arranged behind the oiling roller.
9. The production apparatus according to claim 8, wherein: the yarn guide groove (7) is arranged between the feeding roller at the tail end and the winding mechanism.
10. The production apparatus according to claim 8, wherein: the yarn guide groove (7) is arranged between the feeding roller at the tail end and the previous feeding roller or the oiling roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020596794.3U CN213283818U (en) | 2020-04-20 | 2020-04-20 | Paper diaper production device containing non-yarn-splitting multi-strand spandex yarn |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020596794.3U CN213283818U (en) | 2020-04-20 | 2020-04-20 | Paper diaper production device containing non-yarn-splitting multi-strand spandex yarn |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213283818U true CN213283818U (en) | 2021-05-28 |
Family
ID=75982466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020596794.3U Active CN213283818U (en) | 2020-04-20 | 2020-04-20 | Paper diaper production device containing non-yarn-splitting multi-strand spandex yarn |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213283818U (en) |
-
2020
- 2020-04-20 CN CN202020596794.3U patent/CN213283818U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101213558B1 (en) | A spinning method | |
| CN1141427C (en) | Method and apparatus for making core-spun yarn of steple-fibre covered filament | |
| CN106835412A (en) | The method and apparatus that a kind of electrostatic spinning nano fiber band twists into yarn | |
| CN101014733A (en) | Spun yarn, and method and apparatus for the manufacture thereof | |
| CN113943990B (en) | Core-spun spinning device and new-structure core-spun spinning method with completely wrapped macro cores | |
| CN106480556A (en) | A kind of long filament ring ingot compound spinning method of nano-micro scale reinforcing fiber resultant yarn | |
| EP3423618B1 (en) | A method for manufacturing a multi-ply separable filament yarns&multi-ply separable textured yarn | |
| CN107916480A (en) | A kind of composite yarn preparation facilities of preparation method and application this method of the blended composite yarn of nanofiber and general fibre | |
| JPS60209024A (en) | Production of core spun yarn | |
| CN206308457U (en) | A kind of nanofiber and general fibre blending composite yarn preparation facilities | |
| CN212655926U (en) | Production device of thick denier spandex yarn containing parallel multi-strand yarn | |
| CN213283818U (en) | Paper diaper production device containing non-yarn-splitting multi-strand spandex yarn | |
| US20200407889A1 (en) | Recycled separable multi-filament parallel yarns and woven fabric thereof | |
| CN105755617B (en) | A kind of production technology of AB bases yarn section coloured yarn | |
| WO2021048816A1 (en) | Recycled separable multi-filament parallel yarns and woven fabric thereof | |
| CN213465643U (en) | Paper diaper production device containing split-yarn multi-strand spandex yarn | |
| EP1723273B1 (en) | Process of making false twisted texturized monofilaments | |
| WO2006069642A1 (en) | Method and device for melt-spinning and texturing a plurality of multifilament threads | |
| CN111441120A (en) | Production method and application of heavy denier spandex yarn containing parallel multi-strand yarn | |
| JPH05247715A (en) | Method for direct spinning and drawing of combined filament yarn | |
| JP3170042B2 (en) | Composite yarn and method for producing the same | |
| CN110359150A (en) | A kind of Siro-spinning device and method across the online cored sub-micron fibers yarn of scale | |
| CN116446085B (en) | Production method of polyester FDY filament yarn composite wool-like yarn | |
| CN114808224B (en) | Spinning method for siro compact spinning large-difference-proportion short fiber sheath-core wrap yarn | |
| JP2869053B2 (en) | Filament web former and filament non-woven fabric manufacturing method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No.8, Chenghu Road, textile industrial park, Yaqian Town, Xiaoshan District, Hangzhou City, Zhejiang Province Patentee after: Hangzhou Qingyun New Material Co.,Ltd. Address before: No.8, Chenghu Road, textile industrial park, Yaqian Town, Xiaoshan District, Hangzhou City, Zhejiang Province Patentee before: Hangzhou Sunrise Spandex Co.,Ltd. |