CN113981614B - High-elasticity disposable non-woven fabric underpants and preparation method thereof - Google Patents
High-elasticity disposable non-woven fabric underpants and preparation method thereof Download PDFInfo
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- CN113981614B CN113981614B CN202111471486.3A CN202111471486A CN113981614B CN 113981614 B CN113981614 B CN 113981614B CN 202111471486 A CN202111471486 A CN 202111471486A CN 113981614 B CN113981614 B CN 113981614B
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- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 239000004745 nonwoven fabric Substances 0.000 title abstract description 38
- -1 polypropylene Polymers 0.000 claims abstract description 51
- 239000004744 fabric Substances 0.000 claims abstract description 34
- 239000004750 melt-blown nonwoven Substances 0.000 claims abstract description 29
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 27
- 229920000570 polyether Polymers 0.000 claims abstract description 27
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 26
- 229920002635 polyurethane Polymers 0.000 claims abstract description 25
- 239000004814 polyurethane Substances 0.000 claims abstract description 25
- 239000004743 Polypropylene Substances 0.000 claims abstract description 19
- 229920001155 polypropylene Polymers 0.000 claims abstract description 19
- 239000002202 Polyethylene glycol Substances 0.000 claims abstract description 18
- 229920001223 polyethylene glycol Polymers 0.000 claims abstract description 18
- KKEYFWRCBNTPAC-UHFFFAOYSA-L terephthalate(2-) Chemical compound [O-]C(=O)C1=CC=C(C([O-])=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-L 0.000 claims abstract description 17
- 239000000843 powder Substances 0.000 claims abstract description 16
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 13
- 239000002994 raw material Substances 0.000 claims abstract description 9
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 30
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 30
- 229920000728 polyester Polymers 0.000 claims description 29
- 239000000835 fiber Substances 0.000 claims description 22
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 claims description 20
- 239000004594 Masterbatch (MB) Substances 0.000 claims description 17
- 239000000203 mixture Substances 0.000 claims description 17
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical group N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 claims description 16
- 239000007822 coupling agent Substances 0.000 claims description 16
- 239000003999 initiator Substances 0.000 claims description 15
- 238000002156 mixing Methods 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- DKMROQRQHGEIOW-UHFFFAOYSA-N Diethyl succinate Chemical compound CCOC(=O)CCC(=O)OCC DKMROQRQHGEIOW-UHFFFAOYSA-N 0.000 claims description 11
- 238000001035 drying Methods 0.000 claims description 11
- 238000005098 hot rolling Methods 0.000 claims description 11
- 235000011037 adipic acid Nutrition 0.000 claims description 10
- 239000001361 adipic acid Substances 0.000 claims description 10
- 238000004026 adhesive bonding Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 5
- 238000000151 deposition Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000005406 washing Methods 0.000 claims description 5
- 239000011265 semifinished product Substances 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims description 2
- 238000007493 shaping process Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 14
- 238000010521 absorption reaction Methods 0.000 description 16
- 229920003225 polyurethane elastomer Polymers 0.000 description 10
- 238000011084 recovery Methods 0.000 description 10
- 238000012360 testing method Methods 0.000 description 9
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 6
- 238000007664 blowing Methods 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- 239000002131 composite material Substances 0.000 description 6
- 238000004132 cross linking Methods 0.000 description 5
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 4
- 230000009471 action Effects 0.000 description 4
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 239000002270 dispersing agent Substances 0.000 description 4
- 229920001971 elastomer Polymers 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000009958 sewing Methods 0.000 description 4
- 239000007864 aqueous solution Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- 238000002791 soaking Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000009987 spinning Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000000806 elastomer Substances 0.000 description 2
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- AHAREKHAZNPPMI-UHFFFAOYSA-N hexa-1,3-diene Chemical compound CCC=CC=C AHAREKHAZNPPMI-UHFFFAOYSA-N 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- LRDFRRGEGBBSRN-UHFFFAOYSA-N isobutyronitrile Chemical compound CC(C)C#N LRDFRRGEGBBSRN-UHFFFAOYSA-N 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000005060 rubber Substances 0.000 description 2
- 230000028327 secretion Effects 0.000 description 2
- 210000004243 sweat Anatomy 0.000 description 2
- 238000001291 vacuum drying Methods 0.000 description 2
- LLLVZDVNHNWSDS-UHFFFAOYSA-N 4-methylidene-3,5-dioxabicyclo[5.2.2]undeca-1(9),7,10-triene-2,6-dione Chemical compound C1(C2=CC=C(C(=O)OC(=C)O1)C=C2)=O LLLVZDVNHNWSDS-UHFFFAOYSA-N 0.000 description 1
- 239000005062 Polybutadiene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical group OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 235000010290 biphenyl Nutrition 0.000 description 1
- 239000004305 biphenyl Substances 0.000 description 1
- 229920001400 block copolymer Polymers 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N phenylbenzene Natural products C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920000909 polytetrahydrofuran Polymers 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 238000006276 transfer reaction Methods 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/542—Adhesive fibres
- D04H1/55—Polyesters
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41B—SHIRTS; UNDERWEAR; BABY LINEN; HANDKERCHIEFS
- A41B17/00—Selection of special materials for underwear
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41B—SHIRTS; UNDERWEAR; BABY LINEN; HANDKERCHIEFS
- A41B9/00—Undergarments
- A41B9/02—Drawers or underpants for men, with or without inserted crotch or seat parts
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41B—SHIRTS; UNDERWEAR; BABY LINEN; HANDKERCHIEFS
- A41B9/00—Undergarments
- A41B9/04—Knickers for ladies, with or without inserted crotch or seat parts
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/88—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds
- D01F6/92—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of polyesters
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/56—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving in association with fibre formation, e.g. immediately following extrusion of staple fibres
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Artificial Filaments (AREA)
- Manufacturing Of Multi-Layer Textile Fabrics (AREA)
Abstract
The application discloses disposable non-woven fabrics pants of high elasticity includes the pants body by melt-blown non-woven fabrics preparation, melt-blown non-woven fabrics is made by the raw materials of following parts by weight: 40-65 parts of modified polyethylene glycol terephthalate; 15-25 parts of polypropylene; 10-28 parts of polyether polyurethane; 2-8 parts of calcium carbonate powder; 2-5 parts of a compatilizer; also discloses a preparation method of the high-elasticity disposable non-woven fabric underpants, which comprises the following steps: the melt-blown non-woven fabric prepared by the raw materials is cut and glued to prepare the high-elasticity disposable non-woven fabric underpants. Through adopting above-mentioned technical scheme, this disposable non-woven fabrics pants have the effect that elasticity is good.
Description
Technical Field
The application relates to the field of non-woven fabric products, in particular to high-elasticity disposable non-woven fabric underpants and a preparation method thereof.
Background
The non-woven fabric is a product similar to cloth and formed by taking chemical fibers as basic raw materials and carrying out chemical or hot melt adhesion. The non-woven fabric is a non-woven fabric formed by directly utilizing high polymer master batches, short fibers or filaments to carry out air flow or mechanical net formation on the fibers, then carrying out spunlace, melt-blowing, spun-bonding and the like, and finally carrying out later-stage finishing.
Underpants include anter, back part and end shelves, and when the non-woven fabrics was used for preparing disposable underpants, adoption was sewed up or the bonded mode is connected between anter, back part and the end shelves, then all sews up the rubber band at disposable underpants's opening periphery, and the shrink through the rubber band is adjusted disposable underpants's waist opening scope and shank opening scope.
In view of the above-mentioned related technologies, the non-woven fabric material does not have vertical and horizontal elasticity, so that the disposable non-woven fabric underpants can be in a bulked state when worn, and cannot be fit with the curve of the human body, and the wearing effect is not good.
Disclosure of Invention
In order to make the non-woven fabric underpants fit the human body curve, the application provides high-elasticity disposable non-woven fabric underpants and a preparation method thereof.
The application provides a disposable non-woven fabrics pants of high elasticity adopts following technical scheme:
in a first aspect, the application discloses high-elasticity disposable non-woven fabric underpants, which comprise an underpants body prepared from melt-blown non-woven fabric, wherein the melt-blown non-woven fabric is prepared from the following raw materials in parts by weight:
40-65 parts of modified polyethylene glycol terephthalate;
15-25 parts of polypropylene;
10-28 parts of polyether polyurethane;
2-8 parts of calcium carbonate powder;
2-5 parts of a compatilizer.
By adopting the technical scheme, under the action of the compatilizer and the calcium carbonate powder, the modified polyethylene glycol terephthalate, the polypropylene and the polyether polyurethane are blended to obtain the blend, and the melt-blown non-woven fabric prepared by the blend through the melt-blowing process has high elasticity, good tensile property and good moisture absorption effect.
The polyether polyurethane takes polytetrahydrofuran as a soft segment, the soft segment accounts for about 40 percent of the polyurethane, and the polyether polyurethane has good elasticity and elongation; the polyether polyurethane forms hydrogen bonds after contacting with water, so that good moisture absorption performance is obtained, and when the polyether polyurethane is applied to preparing disposable underpants, sweat, secretion and other liquids secreted by a human body can be quickly absorbed.
Preferably, the preparation steps of the modified polyethylene terephthalate are as follows: firstly, adding polyethylene glycol terephthalate into a reactor, then heating to a reaction temperature, adding an initiator, diethyl succinate and water for mixing, washing with water after the reaction is finished, and then placing in an oven for drying.
By adopting the technical scheme, the polyethylene glycol terephthalate is modified by the initiator and the diethyl succinate, and then the polar group (-COOH) is introduced, so that the modified polyethylene glycol terephthalate is easier to contact with the compatilizer, the calcium carbonate powder and the like in a crosslinking manner, the blending reaction with polypropylene and polyether polyurethane is easier, and the moisture absorption performance of the non-woven fabric is further improved.
Preferably, the mass ratio of the polyethylene terephthalate to the initiator to the diethyl succinate is 100: (0.2-5): (5-15).
Under the condition of the mixture ratio, the initiator promotes macromolecular chains of the polyethylene glycol terephthalate to generate active centers, and the diethyl succinate is grafted and the polyethylene glycol terephthalate is subjected to graft copolymerization through chain transfer reaction, so that the hydrophobic property of the polyethylene glycol terephthalate is improved. The grafted polyethylene terephthalate not only introduces oxygen atoms with large electronegativity to form hydrogen bonds with water molecules, but also destroys the regularity of the original structure, is beneficial to the combination of the water molecules, and thus improves the moisture absorption performance of the non-woven fabric.
Preferably, the initiator is azobisisobutyronitrile, or a mixture of azobisisobutyronitrile and adipic acid.
Preferably, the initiator is a mixture of azodiisobutyronitrile and adipic acid, and the weight part ratio of the azodiisobutyronitrile to the adipic acid in the initiator is 1 (1-2).
By adopting the technical scheme, the azodiisobutyronitrile can be decomposed to generate the isobutyronitrile free radicals, and the free radicals can capture hydrogen atoms on a polyethylene glycol terephthalate skeleton to form active points, thereby being beneficial to the introduction of active groups. When the adipic acid and the azodiisobutyronitrile are initiated, the concentration of the azodiisobutyronitrile is well controlled, so that the number of the isobutyronitrile free radicals is controlled, grafting can be promoted, the content of polar groups is increased by adding the adipic acid, combination of water molecules is facilitated, and the moisture absorption performance of the non-woven fabric is further improved.
Preferably, the compatilizer is SEBS-g-MAH or a mixture of SEBS-g-MAH and a coupling agent.
By adopting the technical scheme, the SEBS-g-MAH is a thermoplastic block copolymer which takes polystyrene as a tail end section and takes an ethylene-butylene copolymer obtained by hydrogenation of polybutadiene as a middle elastic block, when the SEBS-g-MAH is distributed in a mixture of polypropylene, modified polyethylene terephthalate and polyether polyurethane, a sea-island structure is formed, the dispersion performance is good, the connection effect among the polypropylene, the modified polyethylene terephthalate and the polyether polyurethane is good, the structural strength of the obtained mixture is higher, and the crosslinking performance is better. When the blend is subjected to external force, the polyether polyurethane elastomer and the styrene elastomer are used as stress concentrators to absorb most of energy, so that the blend has good toughness.
When the compatilizer is a mixture of SEBS-g-MAH and a coupling agent, the coupling agent contains oleophilic and hydrophilic groups, and the coupling agent and the SEBS-g-MAH have a synergistic effect, so that the crosslinking effect among polypropylene, modified polyethylene terephthalate and polyether polyurethane can be further improved, and the polyether polyurethane elastomer and the styrene elastomer can be more uniformly and stably distributed in the blend; meanwhile, the polar group in the coupling agent can endow the non-woven fabric with higher polarity, so that the moisture absorption performance of the non-woven fabric is improved.
Preferably, the SEBS-g-MAH and the coupling agent have the mass part ratio of (5-7): (1-2).
By adopting the technical scheme, the compatilizer prepared by the proportion has good compatibility between the SEBS-g-MAH and the coupling agent and good dispersibility in high polymer. When the mass part ratio of the SEBS-g-MAH to the coupling agent is 5: (1-2), the dispersing ability of the compatibilizer in the polymer is more excellent.
Preferably, the melt-blown nonwoven fabric is prepared by the following steps:
1) firstly, polypropylene and a compatilizer are blended at high temperature, then modified polyethylene terephthalate, polyether polyurethane and calcium carbonate powder are added for melt blending and melt extrusion to obtain polyester master batches, and then melt-blown molding is carried out to obtain polyester fibers;
2) depositing, bonding and cooling the polyester fibers on a receiving device to obtain a semi-finished product;
3) and carrying out hot rolling and shaping treatment on the semi-finished product to obtain the melt-blown non-woven fabric.
By adopting the technical scheme, after the polypropylene and the compatilizer are blended, the polypropylene is
Preferably, the polyester master batch is dried and then subjected to melt-blowing treatment, the drying temperature is 105-115 ℃, and the drying time is 25-40 min.
By adopting the technical scheme, the polypropylene and the compatilizer are subjected to first-step blending crosslinking, and then the modified polyethylene terephthalate, the polyether polyurethane and the calcium carbonate powder are introduced for blending, so that molecular chains among the raw materials in the obtained polyester fiber contain a large amount of polar groups, and the polyester fiber is easy to react with water molecules, thereby improving the moisture absorption performance of the polyester fiber.
In a second aspect, the application also provides a method for preparing underpants of high-elasticity disposable non-woven fabric, which is prepared by cutting and gluing the melt-blown non-woven fabric.
By adopting the technical scheme, the disposable underpants are produced and prepared in a gluing mode, the processing dependence is small, the processing steps are few, the processing time is short, and the processing efficiency is high.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the melt-blown non-woven fabric prepared by blending the modified polyethylene glycol terephthalate, the polypropylene and the polyether polyurethane has the characteristics of high elongation at break, high elasticity and good moisture absorption performance;
2. the polyethylene glycol terephthalate is modified by the substances containing polar groups, so that the polyethylene glycol terephthalate is easy to react with calcium carbonate powder and a compatilizer, is easy to react with polypropylene and polyether polyurethane, and further improves the moisture absorption performance of the non-woven fabric.
Drawings
Fig. 1 is a schematic structural diagram of the present application.
Description of reference numerals:
1. an underpants body; 11. a front panel; 12. a rear panel; 13. a bottom rail; 2. and (4) elastic bands.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples.
Some of the raw materials in the examples of this application are shown in the table below, and the rest are commercially available.
Table 1 raw material table
Example 1
A preparation method of high-elasticity melt-blown non-woven fabric comprises the following steps:
1. preparation of modified polyethylene terephthalate:
firstly, adding 10kg of polyethylene terephthalate into a reactor, heating to 70 ℃, adding 0.02kg of azodiisobutyronitrile, adding 0.2mol/L of acetone aqueous solution, soaking for 1h, then adding 0.5kg of diethyl succinate into the solution, reacting for 1h, washing with water, then taking out the polyethylene terephthalate, and placing the polyethylene terephthalate in an oven at 100 ℃ for drying for 20min to obtain the modified polyethylene terephthalate.
2. Preparation of melt-blown nonwoven fabric:
(1) firstly, blending 1.5kg of polypropylene and 0.2kg of SEBS-g-MAH at 125 ℃, wherein the rotating speed is 120rpm, reacting for 10min, sending into an extruder, adding 4kg of modified polyethylene terephthalate, 1kg of polyether polyurethane and 0.2kg of calcium carbonate powder, carrying out melt blending, extruding and granulating to obtain polyester master batch, wherein the temperature is 220 ℃, and the rotating speed of a screw is 120 rpm;
(2) melt-blowing and spinning the prepared polyester master batch through a screw extruder, cooling and solidifying the polyester master batch into fiber filaments through a surrounding cold air medium, depositing the fiber filaments on a receiving device, and forming a multilayer composite fiber web through the self-bonding action;
(4) and carrying out hot rolling reinforcement treatment on the multilayer composite fiber web to obtain the melt-blown non-woven fabric, wherein the hot rolling treatment temperature is 170 ℃, the pressure is 5MPa, and the hot rolling time is 15 s.
Example 2
A preparation method of high-elasticity melt-blown non-woven fabric comprises the following steps:
1. preparation of modified polyethylene terephthalate:
firstly, adding 10kg of polyethylene terephthalate into a reactor, heating to 75 ℃, adding 0.25kg of azodiisobutyronitrile, adding 0.2mol/L of acetone aqueous solution, soaking for 1h, then adding 1kg of diethyl succinate into the solution, reacting for 1h, washing with water, then taking out the polyethylene terephthalate, and placing in an oven at 90 ℃ for drying for 30min to obtain the modified polyethylene terephthalate.
2. Preparation of melt-blown nonwoven fabric:
(1) firstly, blending 2kg of polypropylene and 0.3kg of SEBS-g-MAH at 120 ℃, wherein the rotating speed is 125rpm, reacting for 12min, then sending into an extruder, adding 5.5kg of modified polyethylene terephthalate, 2kg of polyether polyurethane and 0.5kg of calcium carbonate powder, carrying out melt blending, extruding and granulating to obtain polyester master batch, wherein the temperature is 225 ℃, and the rotating speed of a screw is 120 rpm;
(2) melt-blowing and spinning the prepared polyester master batch through a screw extruder, cooling and solidifying the polyester master batch into fiber filaments through a surrounding cold air medium, depositing the fiber filaments on a receiving device, and forming a multilayer composite fiber web through the self-bonding action;
(3) and carrying out hot rolling reinforcement treatment on the multilayer composite fiber web to obtain the melt-blown non-woven fabric, wherein the hot rolling treatment temperature is 165 ℃, the pressure is 5MPa, and the hot rolling time is 15 s.
Example 3
A preparation method of high-elasticity melt-blown non-woven fabric comprises the following steps:
1. preparation of modified polyethylene terephthalate:
firstly, adding 10kg of polyethylene terephthalate into a reactor, heating to 80 ℃, adding 0.5kg of azodiisobutyronitrile, adding 0.2mol/L of acetone aqueous solution, soaking for 1h, then adding 1.5kg of diethyl succinate into the solution, reacting for 1h, washing with water, then taking out the polyethylene terephthalate, and placing the polyethylene terephthalate in an oven at 95 ℃ for drying for 25min to obtain the modified polyethylene terephthalate.
2. Preparation of melt-blown nonwoven fabric:
(1) firstly, blending 2.5kg of polypropylene and 0.5kg of SEBS-g-MAH at 125 ℃ at the rotating speed of 120rpm, reacting for 10min, feeding into an extruder, adding 6.5kg of modified polyethylene terephthalate, 2.8kg of polyether polyurethane and 0.8kg of calcium carbonate powder, carrying out melt blending, extruding and granulating to obtain polyester master batch, wherein the temperature is 210 ℃, and the rotating speed of a screw is 120 rpm;
(2) melt-blowing and spinning the prepared polyester master batch through a screw extruder, cooling and solidifying the polyester master batch into fiber filaments through a surrounding cold air medium, depositing the fiber filaments on a receiving device, and forming a multilayer composite fiber web through the self-bonding action;
(3) and carrying out hot rolling reinforcement treatment on the multilayer composite fiber web to obtain the melt-blown non-woven fabric, wherein the hot rolling treatment temperature is 180 ℃, the pressure is 5MPa, and the hot rolling time is 15 s.
Example 4
The difference from example 2 is that the initiator added in step 1 is a mixture of azoisobutyronitrile and adipic acid, wherein the mass part ratio of the azoisobutyronitrile to the adipic acid is 1: 1.
Example 5
The difference from the example 2 is that the initiator added in the step 1 is a mixture of azoisobutyronitrile and hexadiene diacid, wherein the mass part ratio of the azoisobutyronitrile to the hexadiene diacid is 1: 2.
Example 6
The difference from the example 2 is that the compatilizer added in the step 2 is SEBS-g-MAH and a coupling agent (YY-5021 high-activity powder coupling dispersant), and the mass part ratio of the SEBS-g-MAH to the coupling agent is 5: 2.
Example 7
The difference from the embodiment 2 is that the compatilizer added in the step 2 is SEBS-g-MAH and a coupling agent (YY-5021 high-activity powder coupling dispersant), and the mass part ratio of the SEBS-g-MAH to the coupling agent is 7: 1; meanwhile, the polyester master batch obtained in the step (1) is dried and then melt-blown spun, and the method specifically comprises the following steps: and (3) placing the prepared polyester master batch in a vacuum drying oven, and drying at 105 ℃ for 40 min.
Example 8
The difference from the embodiment 4 is that the compatilizer added in the step 2 is SEBS-g-MAH and a coupling agent (YY-5021 high-activity powder coupling dispersant), and the mass part ratio of the SEBS-g-MAH to the coupling agent is 5: 1; meanwhile, the polyester master batch obtained in the step (1) is dried and then melt-blown spun, and the method specifically comprises the following steps: and (3) placing the prepared polyester master batch in a vacuum drying oven, and drying for 25min at the temperature of 115 ℃.
Comparative example 1
The difference from example 1 is that the polyethylene terephthalate added is not modified.
Comparative example 2
The difference from example 3 is that polyester polyurethane is used as polyurethane.
Application example
Referring to fig. 1, a disposable non-woven pants was manufactured from a non-woven fabric cloth prepared in each example or comparative example of the present application by cutting and hot press-bonding with a polyurethane adhesive. The disposable non-woven underpants comprise an underpants body 1 and an elastic band 2. The underwear body 1 comprises a front piece 11, a rear piece 12 and a crotch 13, the bottoms of the front piece 11 and the rear piece 12 are connected through the crotch 13, the upper side edges of the front piece 11 and the rear piece 12 are connected, and the front piece 11, the rear piece 12 and the crotch 13 form the main body of the underwear body 1.
The upper side edges of the front sheet 11 and the back sheet 12 are connected by gluing or sewing to form a ring-shaped waistline portion, and the elastic bands 2 are connected by gluing or sewing to the waistline portion to make the waistline portion elastic; the bottom edges of the front piece 11 and the back piece 12 are respectively connected with the two ends of the crotch part 13 in a gluing or sewing mode, then the crotch part 13, the front piece 11 and the back piece 12 respectively form leg surrounding parts positioned at the two sides of the underwear body 1, and the elastic bands 2 are also connected at the leg surrounding parts in a gluing or sewing mode, so that the leg surrounding parts have elasticity.
Performance test
1) Mechanical Property test
The non-woven fabric cloth applies tensile load to the test sample at the speed of 3mm/min by using a XWW-10A type universal tensile testing machine according to the GB/T1040.3-2006 standard until the test sample is broken, 10 parallel samples are tested in each mode, and after one highest value and one lowest value are removed, an average value is taken and filled into the following table.
2) Moisture absorption test
Moisture permeability is tested by GB/T21655.1-2008 for moisture absorption performance, 10 parallel samples are tested in each type, and an average value is taken after one highest value and one lowest value are removed and is filled in the following table.
TABLE 2 test results
As can be seen from the above examples and performance test data, the melt-blown nonwoven fabric prepared by the examples of the present application has tensile breaking strength of more than 1.0cN/dtex, elongation at break of more than 280%, and elastic recovery of more than 95%; the melt-blown non-woven fabric cloth prepared by the comparative example has the tensile breaking strength of below 1.0cN/dtex, the breaking elongation of below 250% and the elastic recovery of below 80%, and the melt-blown non-woven fabric prepared by the embodiment of the application can be judged to have better breaking strength and rebound resilience through the tensile property and the elastic recovery of the cloth.
According to the test data of the example 1 and the comparative example 1, the tensile breaking strength of the melt-blown non-woven fabric prepared by grafting and modifying polyethylene glycol terephthalate with diethyl succinate is 1.1cN/dtex, the breaking elongation reaches 283.1%, the elastic recovery reaches 95%, and the moisture absorption reaches 221.4%; the melt-blown non-woven fabric prepared from unmodified local ethylene terephthalate has the tensile breaking strength of 1.0cN/dtex, the elongation at break of 195.2%, the elastic recovery of 80% and the hygroscopicity of 116.5%. It is visible to adopt the diethyl succinate to modify the ethylene glycol ester of local diphenyl dicarboxylic acid, introduce polar group to promoted the absorption effect of this non-woven fabrics to the hydrone in the use, moisture absorption performance improves greatly promptly, is favorable to the application of this non-woven fabrics in disposable pants, and this disposable pants are good to the absorption effect of sweat, secretion, improve the comfort level of dress.
According to the test data of example 3 and comparative example 2, it is known that the elastic recovery of the nonwoven fabric is greatly affected by using the polyether polyurethane elastomer and the polyester polyurethane elastomer. When the polyether polyurethane elastomer is adopted, the elastic recovery rate of the prepared non-woven fabric reaches 95.5%, and when the polyester polyurethane elastomer is adopted, the elastic recovery rate of the prepared non-woven fabric reaches 55%. Therefore, the non-woven fabric prepared from the polyether polyurethane elastomer can obtain better elasticity, the disposable underpants prepared from the non-woven fabric are closer to the human body curve when in use, the deformation can be carried out according to people with different shapes, and the wearing comfort is high. The main difference between the polyester type polyurethane elastomer and the polyether type polyurethane elastomer is that the relative content of the soft segment and the hard segment is different, namely the polyurethane elastomer with the soft segment being polyether is adopted to improve the elastic recovery rate of the non-woven fabric.
According to the test data of the embodiment 2 and the embodiments 4 to 5, when the initiator of the modified polyethylene terephthalate is adjusted, more-H in the polyethylene terephthalate is grafted by-COOH in the modification process along with the increase of the content of the polar group (-COOH), so that the content and the distribution of the polar group in the non-woven fabric are improved, and the moisture absorption performance of the non-woven fabric is further improved.
According to the test data of the embodiment 2 and the embodiments 6 to 8, after the components of the compatilizer are adjusted from SEBS-g-MAH to SEBS-g-MAH and YY-5021 high-activity powder coupling dispersing agent, the compatibility among polypropylene, modified polyethylene terephthalate and calcium carbonate is improved, the blending effect is good, the crosslinking effect among the raw materials in the polyester master batch is improved, and the tensile strength and the elastic recovery rate of the non-woven fabric are further improved.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (9)
1. The high-elasticity disposable non-woven underwear is characterized by comprising an underwear body (1) made of melt-blown non-woven fabric, wherein the melt-blown non-woven fabric is made of the following raw materials in parts by weight:
40-65 parts of modified polyethylene glycol terephthalate;
15-25 parts of polypropylene;
10-28 parts of polyether polyurethane;
2-8 parts of calcium carbonate powder;
2-5 parts of a compatilizer;
the preparation steps of the modified polyethylene glycol terephthalate are as follows: firstly, adding polyethylene glycol terephthalate into a reactor, then heating to a reaction temperature, adding an initiator, diethyl succinate and water for mixing, washing with water after the reaction is finished, and then placing in an oven for drying.
2. The highly elastic disposable nonwoven undergarment according to claim 1, wherein: the mass ratio of the polyethylene glycol terephthalate to the initiator to the diethyl succinate is 100: (0.2-5): (5-15).
3. The highly elastic disposable nonwoven undergarment according to claim 2, wherein: the initiator is azodiisobutyronitrile or a mixture of azodiisobutyronitrile and adipic acid.
4. The highly elastic disposable nonwoven undergarment according to claim 3, wherein: the initiator is a mixture of azodiisobutyronitrile and adipic acid, and the weight part ratio of the azodiisobutyronitrile to the adipic acid in the initiator is 1 (1-2).
5. The highly elastic disposable nonwoven undergarment according to claim 1, wherein: the compatilizer is SEBS-g-MAH or a mixture of SEBS-g-MAH and a coupling agent.
6. The highly elastic disposable nonwoven undergarment according to claim 5, wherein: the SEBS-g-MAH and the coupling agent have the mass part ratio of (5-7): (1-2).
7. The highly elastic disposable nonwoven undergarment according to claim 1, wherein: the preparation steps of the melt-blown non-woven fabric are as follows:
1) firstly, polypropylene and a compatilizer are blended at high temperature, then modified polyethylene terephthalate, polyether polyurethane and calcium carbonate powder are added for melt blending and melt extrusion to obtain polyester master batches, and then melt-blown molding is carried out to obtain polyester fibers;
2) depositing, bonding and cooling the polyester fibers on a receiving device to obtain a semi-finished product;
3) and carrying out hot rolling and shaping treatment on the semi-finished product to obtain the melt-blown non-woven fabric.
8. The highly elastic disposable nonwoven undergarment according to claim 7, wherein: the polyester master batch and the polyurethane master batch are dried and then subjected to melt-blown treatment, the drying temperature is 105-115 ℃, and the drying time is 25-40 min.
9. A method for making highly elastic disposable non-woven underpants, characterized in that the underpants are made of the melt-blown non-woven fabric of any one of claims 1 to 8 by cutting and gluing.
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Address after: 5 / F, No. 121, simingyuan, industrial concentration zone, Tong'an District, Xiamen City, Fujian Province, 361000 Patentee after: Xiamen Youpai New Life Technology Co.,Ltd. Address before: 361100 5th floor, No. 121 Siming Park, industrial concentration zone, Tong'an District, Xiamen City, Fujian Province Patentee before: XIAMEN FREEGO NONWOVEN PRODUCTS Corp. |