CN115195238A - Composite elastic non-woven fabric and production process thereof - Google Patents

Composite elastic non-woven fabric and production process thereof Download PDF

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Publication number
CN115195238A
CN115195238A CN202210868740.1A CN202210868740A CN115195238A CN 115195238 A CN115195238 A CN 115195238A CN 202210868740 A CN202210868740 A CN 202210868740A CN 115195238 A CN115195238 A CN 115195238A
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China
Prior art keywords
woven fabric
elastic
woven fabrics
woven
composite elastic
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李志辉
许良
陈新卓
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Liangzi Jinzhou Tianjin Non Woven Co ltd
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Liangzi Jinzhou Tianjin Non Woven Co ltd
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Priority to CN202210868740.1A priority Critical patent/CN115195238A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/022—Non-woven fabric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/28—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer comprising a deformed thin sheet, i.e. the layer having its entire thickness deformed out of the plane, e.g. corrugated, crumpled
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/08—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer the fibres or filaments of a layer being of different substances, e.g. conjugate fibres, mixture of different fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • B32B5/265—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary characterised by one fibrous or filamentary layer being a non-woven fabric layer
    • B32B5/266—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary characterised by one fibrous or filamentary layer being a non-woven fabric layer next to one or more non-woven fabric layers
    • B32B5/268—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary characterised by one fibrous or filamentary layer being a non-woven fabric layer next to one or more non-woven fabric layers characterised by at least one non-woven fabric layer that is a melt-blown fabric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0223—Vinyl resin fibres
    • B32B2262/023—Aromatic vinyl resin, e.g. styrenic (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0253—Polyolefin fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0261—Polyamide fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0292—Polyurethane fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/14—Mixture of at least two fibres made of different materials
    • B32B2262/144—Non-woven fabric

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention discloses a composite elastic non-woven fabric and a production process thereof, and relates to the technical field of non-woven fabrics. The composite elastic non-woven fabric comprises an outer layer non-woven fabric, an intermediate layer material and an inner layer non-woven fabric, wherein the intermediate layer material is a melt-blown elastic fiber web material, and the outer layer non-woven fabric and the inner layer non-woven fabric are both fixedly connected with the intermediate layer material through fixing points. The production process of the composite elastic non-woven fabric comprises the steps of preparing an intermediate layer material by a melt-blowing method, then carrying out transverse/longitudinal mechanical stretching on the composite elastic non-woven fabric, and compounding the three materials by using compounding equipment to form the composite elastic non-woven fabric. The composite elastic non-woven fabric produced by the production process has good elasticity and air permeability, high use comfort and high efficiency in the production process.

Description

Composite elastic non-woven fabric and production process thereof
Technical Field
The invention relates to the technical field of non-woven fabrics, in particular to a composite elastic non-woven fabric and a production process thereof.
Background
The non-woven fabric has the characteristics of flexibility, light weight, air permeability, moisture resistance and low price, and is widely applied to many fields. However, the conventional non-woven fabric is limited by lack of good elasticity, and cannot meet more use requirements of users, such as the elastic waistline of a diaper, and the non-woven fabric with elasticity, which can fit with a human body and does not limit the movement of the human body, is required.
The utility model patent of the current grant publication number CN213006857U discloses a high elasticity non-woven fabric, its technical scheme is: comprises an upper surface layer and a lower surface layer which are composed of non-woven fabrics, and an intermediate layer which is composed of a thermoplastic elastomer film; the upper surface layer and the lower surface layer are processed into a wave-shaped structure through indentation, and are bonded with the middle layer.
By adopting the technical scheme, when the thermoplastic elastomer film is stretched and elastically deformed, the non-woven fabrics at two sides can be stretched, and more allowance is provided for keeping the non-woven fabrics stable. However, the thermoplastic elastomer film has very poor air permeability, and when the film is used by being attached to a human body, moist air cannot be discharged in time, so that a user feels uncomfortable.
Disclosure of Invention
One of the objectives of the present invention is to provide a composite elastic nonwoven fabric, which uses an elastic fiber web to replace a thermoplastic elastomer film to provide elasticity to the composite elastic nonwoven fabric, and the air permeability is significantly improved, so as to improve the comfort of the user.
The technical purpose of the invention is realized by the following technical scheme:
the utility model provides a compound elasticity non-woven fabrics, includes outer non-woven fabrics, intermediate layer material and nexine non-woven fabrics, outer non-woven fabrics and nexine non-woven fabrics are wavy uplift structure, the intermediate layer material is for melting the elastic fiber net material of spouting, outer non-woven fabrics and nexine non-woven fabrics all pass through the consolidation point with the intermediate layer material and consolidate.
Through adopting above-mentioned technical scheme, the flexible scope of this compound elasticity non-woven fabrics can be provided to the wave uplift structure on outer non-woven fabrics and the nexine non-woven fabrics to because the intermediate level material uses the melt-blown method to make, consequently it has better gas permeability, and the travelling comfort is better when laminating human skin uses.
The invention is further configured to: the middle layer is made of an elastic fiber disordered net, the elastic fiber is a continuous elastic long fiber, the elastic long fiber is made of a styrene block copolymer, the diameter of the elastic long fiber is 5-40 micrometers, and the gram weight of the elastic long fiber is 40-100 grams per square meter.
By adopting the technical scheme, the elastic long fiber made of the styrene block copolymer has good elasticity and can provide better air permeability.
The invention is further configured to: elastic short fibers are mixed in the material of the intermediate layer.
By adopting the technical scheme, the elastic short fiber can play a role in reinforcing the elastic long fiber, so that the overall elasticity and the tensile capacity are improved.
The invention is further configured to: the outer layer non-woven fabric and the inner layer non-woven fabric are both made of non-woven fabrics with good elongation.
By adopting the technical scheme, the material can better protect the middle layer material by selecting the outer layer non-woven fabric and the inner layer non-woven fabric.
Another object of the present invention is to provide a process for producing a composite elastic nonwoven fabric, which is capable of mechanically stretching the composite elastic nonwoven fabric to improve softness and bulkiness thereof and improve comfort.
The technical purpose of the invention is realized by the following technical scheme:
the production process of the composite elastic non-woven fabric comprises the following steps of unreeling an inner layer non-woven fabric and an outer layer non-woven fabric, then obtaining elastic long fibers by a melt-blowing method, receiving the elastic long fibers by a receiving device in an auxiliary mode, thereby forming a middle layer material formed by melt-blowing elastic fiber net materials, then carrying out transverse/longitudinal mechanical stretching on the obtained complex, then compounding the three to form the composite elastic non-woven fabric by using compounding equipment, and finally, when the composite elastic non-woven fabric is rolled, the middle layer material in the composite elastic non-woven fabric is restored under the elastic action, so that the outer layer non-woven fabric and the inner layer non-woven fabric can deform to form a wavy raised structure.
Through adopting above-mentioned technical scheme, after mechanical stretching, local deformation extension phenomenon can appear in nexine non-woven fabrics or outer non-woven fabrics, and this kind of phenomenon can make the fibre of nexine non-woven fabrics or outer non-woven fabrics fluffier and more comfortable, and can make this compound elasticity non-woven fabrics have great elasticity.
The invention is further configured to: the compounding mode of the inner layer non-woven fabric, the middle layer material and the outer layer non-woven fabric is ultrasonic compounding.
Through adopting above-mentioned technical scheme, ultrasonic wave complex has advantages such as efficient, the energy consumption is low, fuse intensity height, can effectively improve this compound elasticity non-woven fabrics's bulk strength.
The invention is further configured to: when the elastic long fiber is sprayed out of the melt-blowing die head, the elastic short fiber is fed to the outlet of the melt-blowing die head, and the elastic short fiber and the elastic long fiber are formed together to form the interlayer material.
By adopting the technical scheme, the elastic short fibers and the elastic long fibers can be molded together, so that the fusion property and the distribution uniformity of the elastic short fibers and the elastic long fibers can be ensured.
The invention is further configured to: the receiving device is a single roller type receiving device, the inner layer non-woven fabric is tightly attached to the surface of the roller type receiving device under the suction effect of the roller type receiving device, so that the elastic long fibers are directly formed into a net on the surface of the inner layer non-woven fabric, and after the mechanical stretching is carried out, the outer layer non-woven fabric is covered above the middle layer material.
Through adopting above-mentioned technical scheme, the air current flows to its inboard from the outside of drum-type receiving arrangement, and the back is hugged closely on drum-type receiving arrangement surface to the inner non-woven fabrics on the one hand, can keep the planarization of its surface, and on the other hand the air current is by the refrigerated effect, can make the elastic long fiber who jets out cool off fast. The inner nonwoven fabric receives the long elastic fibers ejected from the nozzle, and prevents the long elastic fibers from adhering to the receiving device when the receiving device receives the long elastic fibers. After mechanical stretching is carried out, the outer-layer non-woven fabric is covered on the intermediate layer material, so that the overall elasticity and tensile strength of the composite elastic non-woven fabric can be guaranteed, better softness and fluffiness can be guaranteed, and better use comfort is kept.
The invention is further configured to: the receiving device is two connected and counter-rotating drum-type receiving devices, the inner layer non-woven fabric and the outer layer non-woven fabric are clamped between the two drum-type receiving devices, and the elastic long fibers are sprayed between the inner layer non-woven fabric and the outer layer non-woven fabric and are extruded by the drum-type receiving devices to form a net.
Through adopting above-mentioned technical scheme, nexine non-woven fabrics and outer non-woven fabrics together carry out mechanical stretching along with the intermediate layer material, can extend effectively to obtain local deformation extension, improve the fluffy degree of nexine non-woven fabrics and outer non-woven fabrics, improve use comfort.
In conclusion, the beneficial technical effects of the invention are as follows:
(1) The elastic fiber net is used for replacing a thermoplastic elastomer film to provide elasticity for the composite elastic non-woven fabric, meanwhile, the air permeability is obviously improved, and the comfort level of a user is improved;
(2) The receiving device does not receive and form the intermediate layer material, but receives and forms the intermediate layer material by utilizing the inner layer non-woven fabric or the inner layer non-woven fabric and the outer layer non-woven fabric, so that the intermediate layer material is prevented from being adhered to the receiving device, the process flow is simplified, and the production efficiency is improved;
(3) And stretch lining non-woven fabrics or lining non-woven fabrics and outer non-woven fabrics together with the intermediate level material, effectively improved the elasticity performance of this elasticity non-woven fabrics to utilize the local deformation extension that forms on the lining non-woven fabrics to improve the compliance and the fluffy degree of lining non-woven fabrics, improve the comfort level of this compound elasticity non-woven fabrics.
Drawings
FIG. 1 is a schematic structural diagram of a composite elastic nonwoven fabric according to an embodiment of the present invention;
FIG. 2 is a schematic view of a process for producing a composite elastic nonwoven fabric according to a second embodiment of the present invention;
FIG. 3 is a schematic view of a process for producing a composite elastic nonwoven fabric according to a third embodiment of the present invention;
FIG. 4 is a schematic cross-sectional view of a nonwoven fabric produced by the production process according to the second embodiment of the present invention, wherein the material of the intermediate layer has a cross-sectional structure;
FIG. 5 is a schematic cross-sectional view of a nonwoven fabric produced by the production process according to the second embodiment of the present invention, wherein the material of the intermediate layer has a cross-sectional structure;
fig. 6 is a schematic cross-sectional view of an interlayer material of a nonwoven fabric produced by the production process in the third embodiment of the present invention.
Reference numerals are as follows: 1. outer layer non-woven fabric; 2. an interlayer material; 3. an inner layer of non-woven fabric; 4. fixing a node; 5. blowing a cotton machine; 6. a drum-type receiving device; 7. a melt-blowing die; 8. a first stretching toothed roller; 9. a spreader roll; 10. compounding equipment; 11. winding a finished product; 12. a second stretching toothed roller; 13. and (4) mechanically stretching the roller.
Detailed Description
The present invention will now be described more fully hereinafter with reference to the accompanying examples.
The first embodiment is as follows:
referring to the attached figure 1, the composite elastic non-woven fabric comprises an outer layer non-woven fabric 1, an intermediate layer material 2 and an inner layer non-woven fabric 3.
The outer layer nonwoven fabric 1 and the inner layer nonwoven fabric 3 both use nonwoven fabrics with good elongation, and in this embodiment, are specifically parallel polypropylene bicomponent spunbond nonwoven fabrics with a grammage of 15-18 g per square meter. The parallel polypropylene bi-component spun-bonded non-woven fabric has the characteristics of high strength, high temperature resistance, aging resistance, high elongation, good stability and good air permeability, so that the outer non-woven fabric 1 and the inner non-woven fabric 3 can achieve the effects of air permeability and protection of the middle layer material 2. In addition, fine denier carded short fiber hot air non-woven fabric with a gram weight of 10-20 g/m or short fiber hot rolled non-woven fabric with a gram weight of 15-20 g/m can be selected. The outer layer non-woven fabric 1 and the inner layer non-woven fabric 3 are both in a wavy bulge structure and are positioned on two sides of the middle layer material 2.
The middle layer material 2 is a melt-blown elastic fiber net material, the middle layer material 2 is a non-deformation straight structure, and the outer layer non-woven fabric 1 and the inner layer non-woven fabric 3 are both fixedly connected with the middle layer material 2 through fixing points 4. The intermediate layer material 2 is a web of elastic fibers that are a continuous elastic long fiber and an elastic short fiber mixed in the elastic long fiber. The elastic long fiber is made of styrene block copolymer, the diameter distribution of the elastic long fiber is 5-40 microns, and the gram weight of the elastic long fiber is 40-100 grams per square meter; the elastic short fiber is self-crimping polycaprolactam-polyurethane eccentric sheath-core composite short fiber.
The working principle of the embodiment is as follows: the wavy bump structures on the outer layer non-woven fabric 1 and the inner layer non-woven fabric 3 can provide the stretching range of the composite elastic non-woven fabric, and the middle layer material 2 is made by a melt-blowing method, so that the composite elastic non-woven fabric has good air permeability and is more comfortable when being attached to human skin. The self-crimping polycaprolactam-polyurethane eccentric sheath-core composite short fiber has good elasticity and wear resistance, and the elastic short fiber can play a role in reinforcing the elastic long fiber, so that the overall elasticity and tensile strength are improved.
Example two:
referring to the attached figure 2, the production process of the composite elastic non-woven fabric comprises the following steps:
at first use unwinding device to unreel inlayer non-woven fabrics 3 and outer non-woven fabrics 1, make inlayer non-woven fabrics 3 and outer non-woven fabrics 1 pass through receiving arrangement after unreeling, in this embodiment, receiving arrangement is two drum-type receiving arrangement 6 that meet mutually and reverse rotation, and inlayer non-woven fabrics 3 is by the centre gripping between two drum-type receiving arrangement 6 with outer non-woven fabrics 1, and drum-type receiving arrangement 6 is prior art, does not do too much to describe herein. Under the negative pressure suction effect of the roller type receiving device 6, the inner layer non-woven fabric 3 and the outer layer non-woven fabric 1 are respectively attached to the surfaces of the corresponding roller type receiving devices 6. The elastic long fiber is sprayed to the upper side of the inner layer non-woven fabric 3 by a melt-blowing method, and when the elastic long fiber is sprayed out by the melt-blowing die head 7, the elastic short fiber is fed to an outlet of the melt-blowing die head 7 by a cotton blowing machine 5, so that the elastic short fiber is formed between the inner layer non-woven fabric 3 and the outer layer non-woven fabric 1 along with the elastic long fiber to form the middle layer material 2. The cotton blowing machine 5 is prior art and will not be described in any greater detail herein. The cross section of the interlayer material 2 obtained in the above manner has a U-shaped or V-shaped structure, as shown in fig. 4 and 5.
And then, simultaneously mechanically stretching the inner-layer non-woven fabric 3, the outer-layer non-woven fabric 1 and the middle-layer material 2, wherein the mechanical stretching mode is transverse stretching, the transverse stretching equipment is mainly a transverse expander, and the transverse expander comprises three mutually meshed first stretching toothed rollers 8, and the transverse expander has the function of transversely extending the composite elastic non-woven fabric and enabling the surface of the composite elastic non-woven fabric to be wrinkled through mutual engagement between the first stretching toothed rollers 8 so as to improve the flexibility of the composite elastic non-woven fabric. The fabric spreading machine further comprises a spreading roller 9, wherein the surface of the spreading roller 9 is provided with threads in opposite rotating directions, and the effect of spreading is achieved by utilizing the friction between the composite elastic non-woven fabric and the spreading roller 9.
Then, the three materials are compounded by using the compounding device 10 to form the final compound elastic non-woven fabric, wherein the compounding mode used in the embodiment is ultrasonic compounding. In addition to ultrasonic compounding, hot pressing, gluing and the like can be adopted for compounding. Finally, the stretching effect on the composite elastic non-woven fabric is removed, and the intermediate layer material 2 in the composite elastic non-woven fabric recovers under the elastic effect.
In this embodiment, because the elasticity of nexine non-woven fabrics 3 and outer non-woven fabrics 1 is not as good as intermediate layer material 2, consequently receiving horizontal stretching back, nexine non-woven fabrics 3 all has local deformation extension phenomenon with outer non-woven fabrics 1, and this kind of deformation extension phenomenon can not influence this compound elasticity non-woven fabrics's overall structure, but can increase nexine non-woven fabrics 3 and outer non-woven fabrics 1's fluffy degree and compliance, improves this compound elasticity non-woven fabrics's use comfort level. Therefore, after the intermediate layer material 2 is restored, the outer layer nonwoven fabric 1 and the inner layer nonwoven fabric 3 are formed into a wavy ridge structure without being restored. And finally, rolling the composite elastic non-woven fabric to obtain a finished product winding 11.
If the long elastic fiber is directly received by the receiving device, the long elastic fiber sticks to the receiving device and is difficult to be peeled. In this embodiment, the inner layer nonwoven fabric 3 and the outer layer nonwoven fabric 1 are used as substrates to receive the elastic long fibers obtained by melt blowing, so that the number of processing steps for the intermediate layer material 2 can be reduced, and the production efficiency can be effectively improved.
Example three:
referring to fig. 3, a process for producing a composite elastic nonwoven fabric is different from the second embodiment in that the receiving device is a single roller-type receiving device 6, and the inner layer nonwoven fabric 3 passes through the upper side of the roller-type receiving device 6 after the inner layer nonwoven fabric 3 is unreeled. The surface of the roller type receiving device 6 is in a negative pressure state, and the airflow flows from the outer side of the roller type receiving device 6 to the inner side of the roller type receiving device, so that on one hand, the inner layer non-woven fabric 3 is tightly attached to the surface of the roller type receiving device 6, the smoothness of the surface of the roller type receiving device can be kept, and on the other hand, the airflow has a cooling effect, and the ejected elastic long fibers can be rapidly molded. The cross section of the interlayer material 2 obtained in the above manner has a diagonal structure, as shown in fig. 6.
When the intermediate layer material 2 is mechanically stretched next, the mode of the mechanical stretching is longitudinal stretching. The longitudinal stretching device mainly comprises two second stretching toothed rollers 12 which are meshed with each other, two pairs of the second stretching toothed rollers 12 are arranged so as to longitudinally stretch the inner layer non-woven fabric 3 and the middle layer material 2 twice, and the longitudinal stretching device has the function of longitudinally stretching the inner layer non-woven fabric 3 and the middle layer material 2 through mutual meshing of the second stretching toothed rollers 12, so that the inner layer non-woven fabric 3 forms a local deformation and elongation phenomenon, and the flexibility of the inner layer non-woven fabric 3 is improved. Two mechanical stretching rollers 13 are also included, the function of which is to take advantage of the difference in linear speed between the two mechanical stretching rollers 13 to achieve stretching of the elastic material. The transverse stretching or the longitudinal stretching can be selected according to actual conditions in the production process.
And finally, after the inner layer non-woven fabric 3 and the middle layer material 2 are stretched, covering the outer layer non-woven fabric 1 on the middle layer material 2, compounding the inner layer non-woven fabric 3 and the middle layer material 2 by using a compounding device 10, and finally, removing the stretching effect, and rolling the composite elastic non-woven fabric to obtain a finished product winding 11.
The longitudinally stretched middle layer material 2 will produce longitudinal extension, and the inner layer non-woven fabric 3 will produce local deformation and elongation in the process. After the composite process is completed and the stretching effect on the composite elastic non-woven fabric is removed, the middle layer material 2 can be recovered to the original length, the inner layer non-woven fabric 3 can not be recovered to the original length due to the local deformation and elongation, the elongation is plastic, however, the softness and the bulkiness of the inner layer non-woven fabric 3 are greatly improved, and the use comfort level is improved. Because outer non-woven fabrics 1 is that just compound going after inner non-woven fabrics 3 and intermediate layer material 2 receive stretching, consequently outer non-woven fabrics 1 can form wavy uplift this moment, and outer non-woven fabrics 1's overall structure is comparatively accomplished, can undertake bigger dynamics of dragging. Compare in embodiment two, the compound elasticity non-woven fabrics that this embodiment obtained also can bear bigger dynamics of dragging when possessing superb gas permeability, comfort level, and intensity is higher, and the comprehensive properties is better.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims (9)

1. The utility model provides a compound elasticity non-woven fabrics, includes outer non-woven fabrics (1), intermediate level material (2) and nexine non-woven fabrics (3), its characterized in that: outer non-woven fabrics (1) and nexine non-woven fabrics (3) are wavy uplift structure, intermediate level material (2) are the melt-blown elastic fiber net material, outer non-woven fabrics (1) and nexine non-woven fabrics (3) all pass through consolidation point (4) with intermediate level material (2) and consolidate.
2. The composite elastic nonwoven fabric according to claim 1, characterized in that: the middle layer material (2) is a disordered net of elastic fibers, the elastic fibers are continuous elastic long fibers, the elastic long fibers are made of styrene block copolymers, the diameter distribution of the elastic long fibers is 5-40 microns, and the gram weight of the elastic long fibers is 40-100 grams per square meter.
3. A composite elastic nonwoven fabric as defined in claim 2, wherein: elastic short fibers are mixed in the middle layer material (2).
4. The composite elastic nonwoven fabric according to claim 1, characterized in that: the outer layer non-woven fabric (1) and the inner layer non-woven fabric (3) both use non-woven fabrics with good elongation.
5. A process for producing a composite elastic nonwoven fabric, for producing the composite elastic nonwoven fabric of claim 1, characterized in that: unreel nexine non-woven fabrics (3) and outer non-woven fabrics (1), later utilize the melt-blown method to obtain the elasticity long fiber, utilize receiving arrangement auxiliary reception elasticity long fiber, thereby form intermediate level material (2) that constitute by the melt-blown elasticity fiber web material, later carry out horizontal/fore-and-aft mechanical stretching to the complex body that obtains, later use set composite (10) to compound the compound elasticity non-woven fabrics of formation of three, when carrying out the rolling to compound elasticity non-woven fabrics at last, intermediate level material (2) among the compound elasticity non-woven fabrics recover under the elasticity effect, then outer non-woven fabrics (1) and nexine non-woven fabrics (3) all will take place to deform and become wavy uplift structure.
6. The process for producing a composite elastic nonwoven fabric according to claim 5, wherein: the inner layer non-woven fabric (3), the middle layer material (2) and the outer layer non-woven fabric (1) are compounded by ultrasonic waves.
7. The process for producing a composite elastic nonwoven fabric according to claim 5, wherein: when the elastic long fibers are ejected from the melt-blowing die head (7), the elastic short fibers are fed to the outlet of the melt-blowing die head (7) and are formed together with the elastic long fibers to form the intermediate layer material (2).
8. The process for producing a composite elastic nonwoven fabric according to claim 5, wherein: the receiving device is a single roller type receiving device (6), the inner layer non-woven fabric (3) is tightly attached to the surface of the roller type receiving device (6) under the suction effect of the roller type receiving device (6), so that the elastic long fibers are directly formed into a net on the surface of the inner layer non-woven fabric (3), and after the mechanical stretching is carried out, the outer layer non-woven fabric (1) is covered above the middle layer material (2).
9. The process for producing a composite elastic nonwoven fabric according to claim 5, wherein: the receiving devices are two connected and reversely rotating drum-type receiving devices (6), the inner-layer non-woven fabric (3) and the outer-layer non-woven fabric (1) are clamped between the two drum-type receiving devices (6), and the elastic long fibers are sprayed between the inner-layer non-woven fabric (3) and the outer-layer non-woven fabric (1) and are extruded by the drum-type receiving devices (6) to form a net.
CN202210868740.1A 2022-07-22 2022-07-22 Composite elastic non-woven fabric and production process thereof Pending CN115195238A (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101166859A (en) * 2005-04-25 2008-04-23 花王株式会社 Nonwoven stretch fabric and process for producing the same
CN101195282A (en) * 2007-12-04 2008-06-11 东华大学 Elastic laminated product and manufacturing technology thereof
CN103276535A (en) * 2013-06-19 2013-09-04 天津泰达洁净材料有限公司 Double-component melt-blown non-woven material and manufacturing method thereof
CN108712976A (en) * 2016-03-11 2018-10-26 3M创新有限公司 vehicle sound absorbing member
CN112760827A (en) * 2020-12-10 2021-05-07 佛山市南海必得福无纺布有限公司 Production line and production method of water-absorbing core body composite non-woven fabric
CN216507288U (en) * 2021-11-30 2022-05-13 广东必得福医卫科技股份有限公司 Production equipment of one-way elastic non-woven fabric

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101166859A (en) * 2005-04-25 2008-04-23 花王株式会社 Nonwoven stretch fabric and process for producing the same
CN101195282A (en) * 2007-12-04 2008-06-11 东华大学 Elastic laminated product and manufacturing technology thereof
CN103276535A (en) * 2013-06-19 2013-09-04 天津泰达洁净材料有限公司 Double-component melt-blown non-woven material and manufacturing method thereof
CN108712976A (en) * 2016-03-11 2018-10-26 3M创新有限公司 vehicle sound absorbing member
CN112760827A (en) * 2020-12-10 2021-05-07 佛山市南海必得福无纺布有限公司 Production line and production method of water-absorbing core body composite non-woven fabric
CN216507288U (en) * 2021-11-30 2022-05-13 广东必得福医卫科技股份有限公司 Production equipment of one-way elastic non-woven fabric

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