CN113186651A - Nonwoven fabric structure and method for producing same - Google Patents

Nonwoven fabric structure and method for producing same Download PDF

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Publication number
CN113186651A
CN113186651A CN202110117511.1A CN202110117511A CN113186651A CN 113186651 A CN113186651 A CN 113186651A CN 202110117511 A CN202110117511 A CN 202110117511A CN 113186651 A CN113186651 A CN 113186651A
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CN
China
Prior art keywords
nonwoven fabric
fabric structure
fibers
layer
fiber
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Pending
Application number
CN202110117511.1A
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Chinese (zh)
Inventor
朱宰亨
李商洙
康宅均
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LG H&H Co Ltd
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LG Household and Health Care Ltd
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Publication of CN113186651A publication Critical patent/CN113186651A/en
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    • 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
    • D04H1/44—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling
    • D04H1/46—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
    • D04H1/492—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres by fluid jet
    • 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
    • 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
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G13/00—Mixing, e.g. blending, fibres; Mixing non-fibrous materials with fibres
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G15/00—Carding machines or accessories; Card clothing; Burr-crushing or removing arrangements associated with carding or other preliminary-treatment machines
    • 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
    • D04H1/407—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 containing absorbing substances, e.g. activated carbon
    • 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
    • D04H1/42—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 characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/425—Cellulose series
    • 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
    • D04H1/42—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 characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/425—Cellulose series
    • D04H1/4258—Regenerated cellulose series
    • 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
    • D04H1/42—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 characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4326—Condensation or reaction polymers
    • D04H1/4334—Polyamides
    • 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
    • D04H1/42—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 characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4326—Condensation or reaction polymers
    • D04H1/435—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
    • D04H1/42—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 characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4374—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 characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece using different kinds of webs, e.g. by layering webs
    • 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
    • D04H1/42—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 characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
    • 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
    • D04H1/44—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling
    • D04H1/46—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
    • D04H1/498—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres entanglement of layered webs
    • 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
    • B32B2262/0276—Polyester 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
    • B32B2262/0276—Polyester fibres
    • B32B2262/0284—Polyethylene terephthalate [PET] or polybutylene terephthalate [PBT]
    • 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
    • B32B2432/00—Cleaning articles, e.g. mops, wipes
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2509/00—Medical; Hygiene
    • D10B2509/02—Bandages, dressings or absorbent pads
    • D10B2509/026—Absorbent pads; Tampons; Laundry; Towels

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Nonwoven Fabrics (AREA)

Abstract

The present invention relates to a nonwoven fabric structure and a method for manufacturing the same, wherein the nonwoven fabric structure comprises a 1 st fiber and a 2 nd fiber, the 1 st fiber comprises one or more components selected from the group consisting of rayon, cellulose, polyester, and polyamide, and the 2 nd fiber is a bicomponent fiber comprising synthetic resin components having different heat shrinkages.

Description

Nonwoven fabric structure and method for producing same
Technical Field
The present invention relates to a nonwoven fabric structure and a method for producing the same, and more particularly, to a nonwoven fabric structure having excellent dust-adsorbing and dust-capturing properties and a method for producing the same.
Background
Non-woven fabrics are those in which a network of fibers is bonded by chemical or mechanical means, rather than by weaving or knitting the fibers. Nonwoven fabrics have various physical properties depending on their constituent components, and have various textures by effectively adjusting their surface properties. The nonwoven fabric includes a space for communicating with an external substance such as air, fluid including water, etc. by entangling fibers in the interior thereof, and according to such characteristics, the nonwoven fabric is used as a charging material or itself can be used as a catching material, and also as a base material for cleaning hygiene and cleaning.
In the case of a conventional wet nonwoven fabric product used as a wet wipe, a cleaning cloth, or a wiping cloth, dust on the surface to be applied cannot be well adsorbed, or the wet nonwoven fabric product itself has a poor trapping ability, and there is a problem that the trapped dust falls off from the surface of the product again.
In order to solve such problems, products have been developed in which a dust adsorption area on a surface of a nonwoven fabric is increased by manufacturing the nonwoven fabric using ultrafine fibers (microfibers), forming embossments on the manufactured nonwoven fabric, or the like. In such products, the dust adsorption performance is slightly improved, but such performance has not reached a significant level, and the problem of falling of the captured dust and recontamination of the cleaning surface is caused because the capturing performance is still insufficient.
Disclosure of Invention
Problems to be solved by the invention
The present invention has been made to solve the above-described problems of the conventional art, and an object of the present invention is to provide a nonwoven fabric structure having various structures having both a dust adsorbing function and a dust capturing function, and a method for manufacturing each nonwoven fabric structure.
Means for solving the problems
The present invention provides a nonwoven fabric structure comprising 1 st fibers and 2 nd fibers, wherein the 1 st fibers comprise one or more components selected from the group consisting of rayon, cellulose, polyester, and polyamide, and the 2 nd fibers are bicomponent fibers comprising synthetic resin components having different heat shrinkages.
Specifically, the nonwoven fabric structure includes: a 1 st layer comprising the 1 st fiber; and a 2 nd layer including the 2 nd fibers, wherein the 1 st layer is laminated on at least one surface of the 2 nd layer, and the 1 st layer and the 2 nd layer are bonded by a water-jet punching process.
Specifically, the 2 nd layer has a larger surface roughness (roughness) than the 1 st layer.
Specifically, the center line surface unevenness R of the 1 st layer and the 2 nd layeraThe ratio is 1: 1.1 to 1: 5.
specifically, the ten-point average unevenness R of the 1 st layer and the 2 nd layerzThe ratio is 1: 1.1 to 1: 5.
specifically, the nonwoven fabric structure has a single-layer structure formed by producing a nonwoven fabric web in which the 1 st fibers and the 2 nd fibers are mixed by a spunlace process.
Specifically, in the above nonwoven fabric mesh, the ratio of 1: 1 to 3: 2, the 1 st fibers and the 2 nd fibers are mixed in a weight ratio.
Specifically, in the above-mentioned hydroentangling step, water is sprayed at a pressure of 40bar to 60bar from a nozzle having a hole with a diameter of 0.09mm to 0.5mm and arranged at intervals of 0.3mm to 0.6 mm.
Specifically, in the bicomponent fiber, synthetic resin components having different heat shrinkage rates are arranged in a sheath-core structure, and the core is arranged at an eccentric position of the sheath.
Specifically, the bicomponent fiber includes two or more synthetic resin components selected from the group consisting of polyethylene, polypropylene, polyethylene terephthalate, polytrimethylene terephthalate, poly-1, 4-cyclohexanedimethylene terephthalate, and nylon.
Further, the present invention provides a method for manufacturing a nonwoven fabric structure, comprising the steps of: (1) a step of forming a fiber network including 1 st fibers and 2 nd fibers, the 1 st fibers including one or more components selected from the group consisting of rayon, cellulose, polyester, and polyamide, and the 2 nd fibers being bicomponent fibers including synthetic resin components having different heat shrinkages from each other; 2) performing a hydroentangling process on the fiber mesh formed in the step (1) to form a nonwoven fabric structure; and (3) drying the nonwoven fabric structure formed in the above step (2) at 120 to 200 ℃.
Specifically, the step (1) includes the steps of: carding the 1 st fiber to form a 1 st mesh; carding the 2 nd fiber to form a 2 nd mesh; and laminating the 1 st mesh to at least one surface of the 2 nd mesh.
Specifically, the step (1) includes the steps of: mixing the 1 st fibers and the 2 nd fibers; and carding the mixed fibers to form a fiber mesh.
Specifically, the ratio of 1: 1 to 3: 2, the 1 st fibers and the 2 nd fibers are mixed in a weight ratio.
Specifically, in the method for producing a nonwoven fabric structure, in the spunlace step, water is sprayed at a pressure of 40bar to 60bar from a nozzle having a hole with a diameter of 0.09mm to 0.5mm and arranged at an interval of 0.3mm to 0.6 mm.
Specifically, in the method for producing a nonwoven fabric structure, the bicomponent fibers are formed by arranging synthetic resin components having different heat shrinkages in a sheath-core structure, and the core is arranged at an eccentric position of the sheath.
Specifically, in the method for producing a nonwoven fabric structure, the bicomponent fiber includes two or more synthetic resin components selected from the group consisting of polyethylene, polypropylene, polyethylene terephthalate, polypropylene terephthalate, 1, 4-cyclohexanedimethylene terephthalate, and nylon.
Effects of the invention
A nonwoven fabric structure according to an embodiment of the present invention includes an adsorption layer that can adsorb foreign substances such as dust and a trap layer that traps the adsorbed foreign substances such as dust, and keeps the adsorbed dust from falling off the structure while improving the dust adsorption performance.
In the nonwoven fabric structure according to one embodiment of the present invention, the adsorption layer provides soft erasability, and the capturing layer provides capturing power to dust and simultaneously forms a rough surface to provide a scrubbing effect to a surface of an object.
The nonwoven fabric structure of one embodiment of the present invention has a single-layer structure, and has both a function of adsorbing foreign matter such as dust and a function of capturing dust, thereby improving dust adsorption performance while keeping adsorbed dust from falling off from the structure.
The method for manufacturing a nonwoven fabric structure according to an embodiment of the present invention provides a nonwoven fabric structure without using a binder through a hydroentangling process, and the manufactured nonwoven fabric structure has the adsorption and trapping effects as described above.
Drawings
Fig. 1 (a) and (b) are cross-sectional views of bicomponent fibers used in a nonwoven fabric structure according to an embodiment of the present invention.
Fig. 2 is a conceptual view of a nonwoven fabric structure according to an embodiment of the present invention.
Fig. 3 is a conceptual view of a nonwoven fabric structure according to an embodiment of the present invention.
Fig. 4 is a conceptual diagram illustrating a process for manufacturing a nonwoven fabric structure according to an embodiment of the present invention.
Fig. 5 is a conceptual diagram illustrating a process for manufacturing a nonwoven fabric structure according to an embodiment of the present invention.
Fig. 6 is a scanning electron microscope image of a skin layer of a bicomponent fiber contained in a nonwoven fabric structure according to an embodiment of the present invention.
Fig. 7 is a photograph comparing bulkiness (bulkiness) when pressure is applied in a state where (a) a nonwoven fabric structure according to an example of the present invention and (b) a nonwoven fabric structure according to a comparative example are laminated in 15 sheets.
Fig. 8 is a 3D depth-synthesized image of (a) one surface of a structure of example 1 of the present invention and (b) one surface of a structure of comparative example 1.
Fig. 9 shows (a) a scanning electron microscope image, (b) an optical microscope image, which confirms the dust capturing performance of the nonwoven fabric structure according to the embodiment of the present invention, (c) a scanning electron microscope image, and (d) an optical microscope image, which confirms the dust capturing performance of the nonwoven fabric structure according to the comparative example.
Fig. 10 is an image for confirming the erasability of (a) a nonwoven fabric structure according to an example of the present invention and (b) a nonwoven fabric structure according to a comparative example.
(symbol description)
A: component B of component 1: component 2
1,2: nonwoven fabric structure
10: layer 1, 20: layer 2
30: hybrid nonwoven web
100, 200: non-woven fabric manufacturing device
110, 210: 1 st fiber supply part
120, 220: 2 nd fiber supply part
130, 230: carding machine
140, 240: water flow connector
150, 250: drying machine
160, 260: calender
170, 270: bobbin winder
Detailed Description
The objects, certain advantages and novel features of the invention will be apparent from the following detailed description and preferred embodiments. However, these examples are for illustrative purposes of the present invention, and the scope of the present invention is not limited to these examples. In describing the present invention, when it is determined that the detailed description of the related known technology makes the gist of the present invention unclear, the detailed description thereof will be omitted.
Hereinafter, high pressure (high pressure), low pressure (low pressure), high temperature and low temperature are relative terms, and do not represent absolute values.
Next, the roughness of the nonwoven fabric structure was measured as the unevenness of the surface of the nonwoven fabric structure, and the Center line surface unevenness (Ra) and Ten point average unevenness (Ten point height of irregular matters, R) were measuredz) Quantified as one or more roughnesses. Center line surface irregularity RaThe calculated average roughness is represented by a value obtained by dividing the sum of absolute values of distances from respective positions of the cross section of the object surface to the assumed center line by the number of the positions. Ten point average roughness RzThe average value of the distances between the highest 5 peaks and the lowest 5 valleys of a cross section from the object surface with respect to the assumed center line is shown.
Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Fig. 1 is a conceptual diagram showing a cross section of a bicomponent fiber used in a nonwoven fabric structure according to an embodiment of the present invention, and fig. 2 and 3 are conceptual diagrams showing a nonwoven fabric structure according to any one of the embodiments of the present invention.
A nonwoven fabric structure according to an embodiment of the present invention includes a 1 st fiber and a 2 nd fiber, the 1 st fiber includes one or more components selected from the group consisting of rayon, cellulose, polyester, and polyamide, and the 2 nd fiber is a bicomponent fiber including synthetic resin components having different heat shrinkages.
Referring to fig. 1, the bicomponent fiber is a fiber including two kinds of synthetic resin components different from each other, and preferably, the two kinds of synthetic resin components have different heat shrinkages when exposed to a predetermined temperature.
The bicomponent fiber is configured by two kinds of synthetic resin components different from each other in a sheath-core (sheath-core) structure. Specifically, the 1 st component a located in the core portion is disposed at an eccentric position of the 2 nd component B located in the sheath portion. The 1 st component a may be disposed at the eccentric position of the 2 nd component B, and may be formed to contact the edge of the 2 nd component B as shown in fig. 1 (a), but is not limited thereto, and may be disposed at a predetermined distance from the edge of the 2 nd component B as shown in fig. 1 (B). The 1 st component a and the 2 nd component B are components having different heat shrinkage rates when exposed to a predetermined temperature, but do not necessarily mean that the specific component has a high heat shrinkage rate, and the heat shrinkage rate of the 1 st component a located in the core may be larger, or the heat shrinkage rate of the 2 nd component B located in the sheath may be larger.
By disposing the core at the eccentricity of the sheath, as the bicomponent fiber is exposed to a prescribed temperature, the shrinkage of a relatively greater length value is excited by the component having a relatively greater thermal shrinkage rate, whereby at least a part of the entire bicomponent fiber is deformed into a folded or wound form. The heat shrinkage as described above is generated according to the difference in melting point of the individual components. That is, shrinkage of the fiber is excited in the bicomponent fiber according to partial melting and hardening of the sheath or core. Such deformation of the bicomponent fiber stimulates changes in the surface roughness (rou ghnesss) of the fiber network or nonwoven fabric including the bicomponent fiber, and in the bulkiness of the nonwoven fabric.
The 1 st component A and the 2 nd component B constituting the bicomponent fibers are synthetic resin components selected from the group consisting of polyethylene, polypropylene, polyethylene terephthalate, polypropylene terephthalate, poly-1, 4-cyclohexanedimethylene terephthalate and nylon.
Referring to fig. 2, a nonwoven fabric structure 1 according to an embodiment of the present invention may have a multilayer structure in which a 1 st layer 10 including 1 st fibers and a 2 nd layer 20 including 2 nd fibers are laminated, and the 1 st layer 10 is laminated on at least one surface of the 2 nd layer 20.
The 1 st fibers are included in an amount corresponding to 60 to 100% by weight of the 1 st layer 10 as a whole. Preferably, layer 110 is composed of only fibers 1. The 2 nd fibers are included in an amount corresponding to 60% to 100% by weight of the entire 2 nd layer 20. Preferably, the 2 nd layer 20 is composed of only the 2 nd fibers. The diameter of the 1 st fiber is smaller than the diameter of the 2 nd fiber.
For example, the nonwoven fabric structure 1 of the present embodiment is a nonwoven fabric structure having a two-layer structure in which the 1 st layer 10 made of only the 1 st fibers and the 2 nd layer 20 made of only the 2 nd fibers are laminated.
The 1 st layer 10 is laminated on at least one side of the 2 nd layer 20, but is not limited thereto. In a modified example of the present embodiment, the 1 st layer is laminated so as to cover at least a part of any one surface of the 2 nd layer or so as to cover all of any one surface of the 2 nd layer and cover only a part of the other surface (not shown).
The 1 st layer 10 and the 2 nd layer 20 are bonded by a spunlace process. In the present invention, the water jet (water jet) is a process of spraying water jet (water jet) to one or more fiber lattices to induce entanglement of fibers constituting the fiber lattices, thereby bonding the fibers inside the fiber lattices or between other fiber lattices. Therefore, the nonwoven fabric structure of the present embodiment is formed by spraying water jets onto at least one surface and bonding the two layers in a state where the layer 110, which is a fiber mesh formed of the 1 st fibers, and the layer 2, which is a fiber mesh formed of the 2 nd fibers, are laminated.
In the water jet step, water is sprayed at a pressure of 40 to 60bar from nozzles having a diameter of 0.09 to 0.5mm and arranged at intervals of 0.3 to 0.6 mm. Preferably, the diameter of the hole of the nozzle for spraying water is 0.09mm to 0.3mm, and the water spraying pressure is 45bar to 55 bar. In the water jet punching step, water is sprayed to both surfaces of the stacked fiber mesh to bond the fiber mesh. The diameter of the nozzle holes for spraying water to both sides and the nozzle arrangement interval and spraying time are the same or different from each other.
In the nonwoven fabric structure of the present example, the 1 st layer 10 and the 2 nd layer 20 are bonded by the hydroentangling step, and have a suitable hardness (stiffness) suitable for wiping the surface of the object to be wiped for adsorbing dust. The hardness of the nonwoven fabric structure was evaluated by detecting the bending length of the cantilever beam type. For example, in the nonwoven fabric structure of the present embodiment, the average value of the folding lengths in the MD direction and the CD direction is 5 or more. When the average value is 5 or more, the form of the structure can be stably maintained even when wiping a hard surface to be wiped, and when the average value is less than 5, the safety of the form required for adsorbing and capturing dust such as permanent deformation of appearance accompanying wiping cannot be secured. Preferably, the nonwoven fabric structure has an average value of 5 to 10, and most preferably an average value of 7 to 10.
The nonwoven fabric structure of the present example was obtained by subjecting the nonwoven fabric structure to a drying or heating step after the hydroentangling step. The heat shrinkage is excited by heating at least one surface of the nonwoven fabric structure to a predetermined temperature, thereby causing the components of the bicomponent fibers to differ from each other. This changes the shape and properties of the surface of the 2 nd layer 20 in the nonwoven fabric structure. The 2 nd layer 20 is deformed to have a relatively greater surface roughness than the 1 st layer 10 as the bicomponent fibers included in the 2 nd layer 20 are bent or entangled. Therefore, the nonwoven fabric structure 1 of the present embodiment has the 2 nd layer 20 having a larger surface roughness than the 1 st layer 10.
Additionally, the 2 nd layer 20 forms a channel inside, through which foreign substances such as fluid or dust can communicate, as the bending or entanglement of the bicomponent fiber occurs. With such a configuration, foreign substances such as air, water, and dust are captured or adsorbed in the 2 nd layer 20 and then flow into the inside of the passage to be captured or retained.
For example, the center line surface unevenness R of the 1 st and 2 nd layers 10 and 20aIs 1: 1.1 to 1: 5 ratio, ten point average roughness R of the 1 st and 2 nd layers 10, 20zIs 1: 1.1 to 1: 5 in the ratio of (A) to (B). Center line surface irregularity RaOr ten point average unevenness RzIs less than 1: 1.1, the dust adsorbing and capturing effect of the 2 nd layer 20 cannot be sufficiently ensured, and when the ratio is more than 1: 1.5, the problem arises that the holding force of the adsorbed state is lowered. Preferably, the center line surface unevenness R of the 1 st and 2 nd layers 10 and 20aIs 1: 1.2 to 1: 4 ratio, ten point average roughness R of the 1 st and 2 nd layers 10, 20zIs 1: 1.2 to 1: 4 in the same ratio. More preferably, the center line surface irregularities R of the 1 st and 2 nd layers 10, 20aIs 1: 1.5 to 1: 4 ratio, ten point average roughness R of the 1 st and 2 nd layers 10, 20zIs 1: 1.5 to 1: 4 in the same ratio. Most preferably, layer 1 and layer 10Center line surface irregularity R of layer 220aIs 1: 2 to 1: 3, ten point average unevenness R of the 1 st and 2 nd layers 10 and 20zIs 1: 2 to 1: 3, in the same ratio.
In the nonwoven fabric structure 1 of the present embodiment as described above, the 1 st layer 10 has a relatively low roughness, and thus the 1 st layer 10, which is relatively soft, serves as an adsorption layer for providing adsorption of fine particles such as dust by static electricity, and when the 2 nd layer 20 is in a dry (dry) state, adsorbs dust by triboelectric force, or in a wet (wet) state, the adsorption of dust is achieved by at least one of the viscosity of the cleaning liquid to be impregnated, a surfactant, surface tension, and capillary phenomenon, and the adsorption layer serves as a trap layer for trapping adsorbed substances by the formation of a channel structure. In addition, the layer 2 is configured to have relatively greater roughness, and provides a scrubbing effect of removing stains or contaminants by physical force by allowing a user to scrub the surface of the object with a relatively rough surface.
For example, the user rubs the surface of the object with the 2 nd layer 20 of the nonwoven fabric structure 1 to physically remove stiff stains and the like, and reciprocates the 1 st layer 10 on the surface of the object to adsorb dust, fragments of stains broken by the above-mentioned scrubbing, and dust, thereby newly providing a space for trapping the dust adsorbed by the 2 nd layer 20.
Referring to fig. 3, the nonwoven fabric structure according to one embodiment of the present invention is a single-layer nonwoven fabric structure used to produce a nonwoven fabric mesh 30 formed by mixing the 1 st fibers and the 2 nd fibers by a spunlace process.
In the following, the nonwoven fabric structure 2 will be described, and the description of the parts overlapping with the nonwoven fabric structure 1 of fig. 2 may be replaced by the above-described examples.
The nonwoven fabric mesh 30 is formed by mixing the 1 st and 2 nd fibers, and after the respective fibers are individually woven, they are mixed in a carding process, or the 1 st and 2 nd fibers may be mixed together and woven, and then carded. The nonwoven fabric grid 30 is woven from 1: 1 to 3: 2 to mix the 1 st and 2 nd fibers.
For example, the nonwoven fabric structure 2 of the present embodiment is a single-layer nonwoven fabric structure composed of a nonwoven fabric lattice 30 in which the 1 st fibers and the 2 nd fibers are mixed at a predetermined ratio.
The nonwoven fabric web 30 formed by mixing the 1 st fibers and the 2 nd fibers is subjected to a water jet process to induce bonding between fibers in the nonwoven fabric web, thereby forming one structure. In the nonwoven fabric structure 2 of the present embodiment, one structure is formed by spraying water jets onto at least one surface of the nonwoven fabric mesh 30 formed by mixing the 1 st fibers and the 2 nd fibers.
The nonwoven fabric structure of the present example was obtained by subjecting the nonwoven fabric structure to a drying or heating step after the hydroentangling step. Thereby, the roughness of at least one surface of the nonwoven fabric structure 2 is deformed to be rougher than before drying or heating.
The nonwoven fabric structure 2 of the present embodiment is formed as a single-layer structure including the 1 st fibers and the 2 nd fibers, and is used as an adsorption layer for adsorbing fine particles such as dust by triboelectricity or at least one of viscosity of an immersed cleaning liquid, a surfactant, surface tension, and capillarity in a wet (wet) state in the case of a dry (dry) state such as the 2 nd layer 20 of the nonwoven fabric structure 1 of the above-described embodiment, and a trapping layer for trapping adsorbed substances by a channel structure formed by deformation of the 2 nd fibers. The nonwoven fabric structure 2 has a relatively high roughness of at least a part of any one surface relative to the rest thereof according to a change in conditions of a drying or heating process, and thus provides a scrubbing effect of removing stains or contaminants by a physical force when a user scrubs a surface to be cleaned with a relatively rough surface.
For example, the user rubs the surface of the object with either one of the surfaces of the nonwoven fabric structure 2 to physically remove stiff stains and the like, and adsorbs and captures dust and fragments of stains broken by the rubbing or the like.
Fig. 4 and 5 are conceptual views each showing a manufacturing process of a nonwoven fabric structure according to any one of the embodiments of the present invention.
Referring to fig. 4, a nonwoven fabric manufacturing apparatus 100 for performing a manufacturing process of a nonwoven fabric structure 1 according to an embodiment of the present invention is provided.
The nonwoven fabric manufacturing apparatus 100 includes a carding machine 130, a water flow coupling machine 140, a dryer 150, a calender 160, a winder 170, and the like.
The 1 st fiber supply unit 110 and the 2 nd fiber supply unit 120 supply the 1 st fiber and the 2 nd fiber, respectively, to the nonwoven fabric manufacturing apparatus 100. Each supply section supplies each fiber in a woven state to the carding machine 130, but is not limited thereto.
The carding machine 130 is a device for unwinding the received individual fiber winding and adjusting the fiber direction, and may be, for example, a flat card, a roller card, a combo card, but is not limited thereto. A carding machine (not shown) is included at the rear end of the carding machine 130 to produce carded fibers into a web form. The mesh of the 1 st fiber and the mesh of the 2 nd fiber passing through the comb 130 are arranged to be stacked on each other and supplied to the water current combiner 140.
The water jet coupler 140 moves the stacked meshes, and sprays water jets on at least one surface of the meshes to perform a water jet punching process. In the present embodiment, the water flow coupler 140 sprays water at a pressure of 40 to 60bar by respective nozzles having a diameter hole of 0.09 to 0.5mm and arranged at intervals of 0.3 to 0.6 mm. The nonwoven fabric structure 1 has a double structure in which the 1 st layer 10 and the 2 nd layer 20 are joined together by the water flow joining unit 140, and is then supplied to the dryer 150.
The dryer 150 is a member that dries water sprayed when water flows are combined, but is not limited thereto, and the 2 nd layer 20 may be deformed by additional heating to change the surface properties of the 2 nd layer 20. The shrinkage of the 1 st component a and the 2 nd component B in the 2 nd fiber, i.e., the bicomponent fiber, of the 2 nd layer 20 passing through the dryer 150 is different, thereby exciting the bending or twisting of the bicomponent fiber and increasing the surface roughness of the 2 nd layer 20. The nonwoven fabric structure 1 having passed through the dryer 150 is supplied to a calender 160.
The calender 160 calenders the manufactured nonwoven fabric structure 1 by one or more rolls. The rollers may perform the functions of pressing, heating, or pressing and heating, and only one pair of rollers is illustrated in the figure, but a plurality of rollers or a pair of rollers may be arranged. The roller is disposed in a form of, for example, an L-shape, a Z-shape, an inverted L-shape, etc., which are well known in the art, but not limited thereto. The calender 160 may form a texture or an impression of a desired shape on the surface of the nonwoven fabric structure 1. The deformation of the 2 nd layer 20 in the dryer 150 described above can also occur in the calender 160. The nonwoven fabric structure 1 passed through the calender 160 is supplied to the winder 170 and is formed into a curled state.
A method for manufacturing the nonwoven fabric structure 1 using the apparatus described above will be described based on the contents of the nonwoven fabric manufacturing apparatus 100 according to the present embodiment described above.
The method for manufacturing the nonwoven fabric structure 1 includes the following steps (1) to (3): (1) a step of forming a fiber mesh including a 1 st fiber including one or more components selected from the group consisting of rayon, cellulose, polyester, and polyamide, and a 2 nd fiber that is a bicomponent fiber including synthetic resin components having different heat shrinkages; (2) a step of forming a nonwoven fabric structure by performing a hydroentangling process on the fiber web formed in the step (1); and (3) drying the nonwoven fabric structure formed in the step (2) at 120 to 200 ℃.
(1) The step is a step of supplying the 1 st fiber and the 2 nd fiber to the nonwoven fabric manufacturing apparatus 100. Therefore, the (1) step further comprises: a step of carding 130 the 1 st fibers to form a 1 st cell, a step of carding 130 the 2 nd fibers to form a 2 nd cell, and a step of laminating the 1 st cell on at least one surface of the 2 nd cell.
(2) The step is a step of spraying water jets by passing the laminated mesh through the water current combiner 140. The nozzle for water jet spraying and the spraying conditions of water are the same as described above.
(3) The step of drying the nonwoven fabric structure 1 is a step of exciting the deformation of the bicomponent fiber of the 2 nd layer by passing through at least one of the dryer 150 and the calender 160.
A nonwoven fabric manufacturing apparatus 200 for performing the manufacturing process of the nonwoven fabric structure 2 according to one embodiment of the present invention will be described with reference to fig. 5.
The nonwoven fabric manufacturing apparatus 200 includes a carding machine 20, a water current combiner 240, a dryer 250, a calender 260, a winder 270, and the like. Next, a nonwoven fabric manufacturing apparatus 200 and a method of manufacturing a nonwoven fabric structure 2 by using the nonwoven fabric manufacturing apparatus 200 will be described, and portions overlapping with the manufacturing apparatus 100 and the method of the nonwoven fabric structure 1 of fig. 4 will be omitted from description and replaced with the above-described examples.
The 1 st fiber supply unit 210 and the 2 nd fiber supply unit 220 may supply the 1 st fiber and the 2 nd fiber to the nonwoven fabric manufacturing apparatus 200, respectively, and the 1 st fiber and the 2 nd fiber may be mixed before being supplied to the apparatus. The method or apparatus is not limited as long as uniform mixing of the 1 st fiber and the 2 nd fiber is ensured. The mixed 1 st and 2 nd fibers are supplied to the carding 230.
The carding unit 230 forms a fiber web in a mixed form of the 1 st fiber and the 2 nd fiber, and supplies this to the water current combiner 240.
The water jet combiner 240 performs a water jet process by spraying water jets to at least one surface of the fiber mesh. The nonwoven fabric structure 2 is formed into a single-layer structure by passing through the water flow coupling device 240, and then supplied to the dryer 250 and the calender 260.
The 2 nd fiber included in at least one surface of the nonwoven fabric structure 2 is deformed by passing through the dryer 250 and the calender 260, and a surface having uniform roughness or different roughness for each portion is formed in the nonwoven fabric structure 2 having a single-layer structure according to the drying or heating temperature or the adjustment of the portion. The nonwoven fabric structure 2 passed through the calender 260 is supplied to the winder 270 to be curled.
Based on the contents of the nonwoven fabric manufacturing apparatus 200 of the present embodiment, a method for manufacturing the nonwoven fabric structure 2 by using the above apparatus will be described.
The method for manufacturing the nonwoven fabric structure 2 includes the following steps (1) to (3): (1) a step of forming a fiber mesh including a 1 st fiber including one or more components selected from the group consisting of rayon, cellulose, polyester, and polyamide, and a 2 nd fiber being a bicomponent fiber including synthetic resin components having different heat shrinkages; (2) a step of forming a nonwoven fabric structure by performing a hydroentangling process on the fiber web formed in the step (1); and (3) drying the nonwoven fabric structure formed in the step (2) at 120 to 200 ℃.
(1) The step is a step of mixing the 1 st fibers and the 2 nd fibers and supplying them to the nonwoven fabric manufacturing apparatus 200. Therefore, the step (1) includes a step of mixing the 1 st fibers and the 2 nd fibers and a step of carding 230 the mixed fibers to form a fiber mesh. In the step (1), the above-mentioned 1 st fiber and the above-mentioned 2 nd fiber are mixed in a ratio of 1: 1 to 3: 2 by weight ratio.
(2) The step is a step of spraying water jets by passing the laminated mesh through the water current combiner 240. The nozzle for performing the water jet spraying and the spraying conditions of the water are the same as in the above case.
(3) The step of drying the nonwoven fabric structure 2 is a step of exciting the deformation of the bicomponent fiber included in the nonwoven fabric structure 2 by passing through at least one of the dryer 250 and the calender 260.
Next, more specific examples of the present invention will be described based on the contents of the above examples. In the examples and comparative examples, in the case of the nonwoven fabric structure impregnated with the components, 10L of purified water at 25 ℃ was placed in a water tank having a size of 600 × 600 × 300mm, and the nonwoven fabric structure was completely immersed in water and left to stand for 1 hour, and then dried in a constant temperature dryer at 50 ℃ for 12 hours, followed by detection.
EXAMPLE 1 nonwoven Fabric Structure having two-layer Structure
A layer 1 (basis weight 25gsm) composed of 100% of the rayon fiber was produced by weaving and carding the rayon fiber 2de, and a layer 2 (basis weight 35gsm) composed of 100% of the biconstituent fiber was produced by weaving and carding the biconstituent fiber 6 de. The bicomponent fiber is obtained by placing polypropylene at the core position as the 1 st component and polyethylene at the sheath position as the 2 nd component. In the state where the layer 1 was laminated on one surface of the layer 2, water jet joining was performed by spraying water jets of 50bar to both surfaces through a water jet joining device having a nozzle hole size of 0.12mm and an interval between nozzles of 0.48 mm. The bonded nonwoven fabric structures were heated and dried at 130 ℃ to produce a nonwoven fabric structure having a two-layer structure.
Fig. 6 shows an image of the surface of the 2 nd layer of the nonwoven fabric structure produced by scanning electron microscope observation. The bicomponent fibers constituting the 2 nd layer are partially melted and then hardened together with other fibers, thereby forming channels in the 2 nd layer, thereby increasing bulkiness.
Example 2 nonwoven Fabric Structure of Single-layer Structure
And (3): 2 weight ratio the same rayon and biconstituent fibers as used in example 1 were mixed to produce a fibrous web having a basis weight of 60 gsm. The water jet bonding was performed by spraying water jets of 50bar to both sides through a water jet bonder having a nozzle hole size of 0.12mm and a space between nozzles of 0.48 mm. The bonded nonwoven fabric structures were heated and dried at 150 ℃ to produce a nonwoven fabric structure having a single-layer structure.
Comparative example 1 rayon nonwoven fabric of single layer Structure
A single-layer structure fiber mesh (basis weight 60gsm) composed of 100% of the above rayon fibers was prepared by opening and carding the rayon fibers 2 de. The fiber lattices were water-flow-bonded under the same conditions as in the examples, and the bonded nonwoven fabric structure was heated and dried at 150 ℃.
Comparative example 2 nonwoven Fabric having Single-layer Structure
As comparative example 2, a commercially available double effect cleaning cloth product of 3M company was used. Comparative example 2 is a nonwoven fabric structure having a single-layer structure (basis weight of 125gsm) composed of ultrafine fibers.
Comparative example 3 nonwoven Fabric having Single-layer Structure
And (3) adding the following components in percentage by weight of 2: 3 weight ratio the same rayon fibers and polyethylene terephthalate fibers as in comparative example 1 were mixed to produce a fiber mesh having a basis weight of 60 gsm. The fiber lattices were subjected to water flow bonding under the same conditions as in the examples, and the bonded nonwoven fabric structure was heated and dried at 150 ℃.
Comparative example 4 nonwoven Fabric having double layer Structure
And (3) adding the following components in percentage by weight of 2: the same rayon fibers and polyethylene terephthalate fibers as in comparative example 1 were mixed at a weight ratio of 3, and the mixture was carded to produce a 1 st layer (basis weight of 30gsm), and the polypropylene fibers were woven and carded to produce a 2 nd layer (basis weight of 30gsm) composed of 100% polypropylene fibers. In a state where the 1 st layer was laminated on one surface of the 2 nd layer, water flow bonding was performed under the same conditions as in the above example, and the bonded nonwoven fabric structure was heated and dried at 150 ℃.
Comparative example 5 nonwoven Fabric having double layer Structure
Rayon fiber 2de was woven and carded to produce a 1 st layer (basis weight 25gsm) composed of 100% of the above rayon fibers and a 2 nd layer (basis weight 35gsm) composed of 100% of a slurry prepared by a dust-free (airlad) process in which air was used instead of water. In a state where the 1 st layer was laminated on one surface of the 2 nd layer, water flow bonding was performed under the same conditions as in the above example, and the bonded nonwoven fabric structure was heated and dried at 150 ℃.
Experimental example 1 confirmation of bulkiness (bulkiness) of nonwoven Fabric Structure
The bulkiness of the nonwoven fabric structures manufactured in example 1 and comparative example 1 was confirmed. Nonwoven fabric structures of the same thickness obtained in example 1 and comparative example 1 were prepared and 15 sheets were stacked, and weights of the same weight were placed on the nonwoven fabric structures to compare the degrees of compression.
As shown in fig. 7, the nonwoven fabric of example 1 was compressed to a small degree for the same weight, which is consistent with the result of the increased bulkiness of the through-channels confirmed in fig. 6 in the interior of the nonwoven fabric structure of example 1.
Experimental example 2 confirmation of roughness (roughness) of nonwoven Fabric Structure
The unevenness R of the center line surface of the nonwoven fabric structures prepared in example 1 and comparative example 1 was confirmedaAnd ten points average unevenness RzComparative analysis was performed on the roughness of each structure. Nonwoven fabric structures having a size of 5.78mm in lateral length and 5.78mm in vertical width were prepared, and 3D depths were detected as a total x48 magnification using DSXP LFL3.6X as an objective lens for olympus dsx110-MSD to prepare a profile. Any 6 regions P1-P6 are selected from the configuration file shown in FIG. 8, and the surface unevenness R of the center line is derivedaAnd ten points average unevenness RzAnd is shown in table 1 below.
[ Table 1]
Figure BDA0002920891170000141
In general, the surface unevenness R of the center line of either surface of the nonwoven fabric structureaWhen the thickness is 50 μm or more, the effect of adsorbing and capturing dust is excellent, and when the substrate is provided with the 1 st layer as an adsorbing layer and the 2 nd layer as a capturing layer, the surface unevenness R of the 1 st layer and the 2 nd layer at the center line isaThe ratio is 1: 1.1 to 1: 1.5, layer 1 and layer 2 Ten-Point average roughness RzThe ratio is 1: 1.1 to 1: 1.5, the adsorption effect and the capturing effect were excellent.
As is clear from Table 1, the nonwoven fabric structure of example 1 of the present invention has the average surface irregularity R of the center line of 53 μm or more in the 2 nd layeraCenter line surface unevenness R of the 1 st and 2 nd layersaRatio and ten point mean roughness RzThe ratios are respectively 1: 2 to 1: 3 range. In contrast, comparative example 1 having a single-layer structure failed to ensure sufficient center line surface unevenness R for dust adsorption and trappinga。
Experimental example 3 bending length (Ben) of nonwoven Fabric Structureding length) confirmation
The bending lengths of the nonwoven fabric structures prepared in example 1 and comparative example 1 were compared and analyzed. 5 nonwoven fabric structures each having a lateral length of 2.5cm and a vertical width of 15cm were prepared, dried in a constant temperature dryer at 50 ℃ for 12 hours, and then pushed in the MD (machine direction) direction and the CD (cross direction) direction in accordance with the cantilever beam (cantilever) method of ISO9073-7 standard until reaching inclined surfaces of 41.5 degrees, respectively, to detect average bending lengths, which are shown in table 2.
[ Table 2]
Example 1 Comparative example 1
MD Direction 9.5cm 3.5cm
CD orientation 7.5cm 4.0cm
Average 8.5cm 3.75cm
The average value of the average folding length in the MD and CD directions of the nonwoven fabric structure of example 1 of the present invention is 5 or more, and the form safety required for dust adsorption is excellent, whereas the average value of the nonwoven fabric structure of comparative example 1 is less than 5, and the safety is insufficient when the nonwoven fabric structure is placed on a surface of an object and wiped.
Experimental example 4 dust trapping rate analysis of nonwoven Fabric Structure
The dust capture rates of the nonwoven fabric structures prepared according to example 1 and comparative examples 1 to 5 were compared and analyzed. First, nonwoven fabric structures each having a width of 10cm in the lateral direction and a width of 10cm in the vertical direction were prepared, and the nonwoven fabric structures were allowed to absorb water so as to have a water content of 250% with respect to the weight of the nonwoven fabric structures. As standard dust, iron powder (ion powder, 200mesh, average particle diameter 1.27 μm) was prepared and 0.01g was applied to the surface of the object to be detected. The total weight of the dust captured was measured and the capture rate was calculated by reciprocating the wet nonwoven fabric structure 5 times using a rubbing tester (rubbing tester) while maintaining the load of 0.5kg on the surface to be coated with the iron powder (the area of the object was 10cm in lateral length and 15cm in vertical width). In the case of the nonwoven fabric structure having a two-layer structure, the flexible surface (layer 1) was used as the application surface, and the results are shown in table 3 below.
[ Table 3]
Figure BDA0002920891170000151
As can be seen from table 3, the nonwoven fabric structure of example 1 of the present invention achieved a dust trapping rate of 90% or more. In contrast, the rayon fiber having a 100% applied surface in comparative example 1 had no difference in composition from the applied surface in example 1, but had a trapping rate of about 70%, and the trapping rate of about 70% was exhibited in comparative example 2, which is a commercially available microfiber nonwoven fabric. Such a difference is generated by trapping the adsorbed dust in the channel inside the 2 nd layer provided as the trapping layer in embodiment 1.
In comparative example 3, when rayon and polyethylene terephthalate were simply mixed, not only was the adsorption force low, but also the final dust trapping rate was less than 50%.
In comparative examples 4 and 5, although the nonwoven fabric structure had the 2 nd layer, when the channel could not be formed inside because the bicomponent fiber was not included, the performance of trapping the adsorbed dust could not be sufficiently provided.
The above experimental results demonstrate the dust trapping effect of the nonwoven fabric structure having the 2 nd layer comprising the bicomponent fibers as the trapping layer.
In addition, images obtained by observing the nonwoven fabric structures of example 1 and comparative example 1 after capturing dust according to the above experiment using a scanning electron microscope and an optical microscope were compared. Referring to fig. 9, in the nonwoven fabric structures of (a) and (b) example 1, catching regions are uniformly formed from the Rayon layer (layer 1) to the bicomponent fiber layer (layer 2), while in the nonwoven fabric structures of (c) and (d) comparative example 1, dust catching regions are formed only in a part of the Rayon layer. Such microscope images for each nonwoven fabric structure can support the roughness identified in table 1 above and the results of table 3, as well as the importance of the capture rate when forming the capture layer using bicomponent fibers.
Experimental example 5 scrubbing experiment Using nonwoven Fabric Structure
The nonwoven fabric structures prepared according to example 1 and comparative example 1 were used to perform a scrub test on contaminants. Wet nonwoven fabric was prepared by the same procedure as in experimental example 4, and 2g of coffee was applied to the surface of the object in a circle having a diameter of 0.5cm and dried to form a stain. The visual inspection and the residual weight were measured by performing 30 round trips using a friction tester under the same conditions as in experimental example 4.
Fig. 10 is an image of spots obtained after 30 round trips using (a) the nonwoven fabric structure of example 1 and (b) the nonwoven fabric structure of comparative example 1. As a result of weight measurement of the remaining stains, 80% or more of the stains were removed in the case of the nonwoven fabric structure of example 1, and less than 20% of the stains were removed in the case of the nonwoven fabric structure of comparative example 1.
The above experimental results show that the nonwoven fabric structure having the 2 nd layer including the bicomponent fiber to increase the surface roughness has a sufficient scouring effect on contaminants on the surface of the object.
The present invention is not limited to the above-described embodiments, and a combination of the above-described embodiments or a combination of at least one of the above-described embodiments and a known technique may be implemented as still another embodiment.
The present invention has been described in detail with reference to the specific embodiments, but the present invention is not limited thereto, and those skilled in the art can modify or improve the present invention within the technical spirit of the present invention.
It is intended that all such and all such modifications and variations of the present invention be included within the scope of the invention, which is to be understood in light of the above teachings and is not to be limited thereto.

Claims (17)

1. A nonwoven fabric structure comprising 1 st and 2 nd fibers, characterized in that,
the 1 st fiber includes one or more components selected from the group consisting of rayon, cellulose, polyester, and polyamide,
the 2 nd fiber is a bicomponent fiber including synthetic resin components having different heat shrinkages from each other.
2. The nonwoven fabric structure according to claim 1,
the nonwoven fabric structure includes:
a 1 st layer comprising the 1 st fiber; and
a 2 nd layer comprising the 2 nd fiber described above,
the 1 st layer is laminated on at least one surface of the 2 nd layer, and the 1 st layer and the 2 nd layer are bonded by a water jet punching process.
3. The nonwoven fabric structure according to claim 2,
the 2 nd layer has a surface roughness greater than that of the 1 st layer.
4. The nonwoven fabric structure according to claim 3,
the center line surface unevenness (R) of the 1 st and 2 nd layersa) The ratio is 1: 1.1 to 1: 5.
5. the nonwoven fabric structure according to claim 3,
ten point average unevenness (R) of the 1 st and 2 nd layersz) The ratio is 1: 1.1 to 1: 5.
6. the nonwoven fabric structure according to claim 1,
the nonwoven fabric structure has a single-layer structure formed by producing a nonwoven web by a spunlace process, the nonwoven web being formed by mixing the 1 st fibers and the 2 nd fibers.
7. The nonwoven fabric structure according to claim 6,
in the non-woven fabric grid, the ratio of 1: 1 to 3: 2, the 1 st fibers and the 2 nd fibers are mixed in a weight ratio.
8. The nonwoven fabric structure according to claim 2 or 6,
in the above-mentioned hydroentangling step, water is sprayed at a pressure of 40 to 60bar from a nozzle having a hole with a diameter of 0.09 to 0.5mm and arranged at an interval of 0.3 to 0.6 mm.
9. The nonwoven fabric structure according to claim 1,
in the bicomponent fiber, synthetic resin components having different heat shrinkages are arranged in a sheath-core structure, and the core is arranged at an eccentric position of the sheath.
10. The nonwoven fabric structure according to claim 1,
the bicomponent fiber includes two or more synthetic resin components selected from the group consisting of polyethylene, polypropylene, polyethylene terephthalate, polytrimethylene terephthalate, poly-1, 4-cyclohexanedimethylterephthalate, and nylon.
11. A method for manufacturing a nonwoven fabric structure, comprising the steps of:
(1) a step of forming a fiber network including 1 st fibers and 2 nd fibers, the 1 st fibers including one or more components selected from the group consisting of rayon, cellulose, polyester, and polyamide, and the 2 nd fibers being bicomponent fibers including synthetic resin components having different heat shrinkages from each other;
(2) performing a hydroentangling process on the fiber mesh formed in the step (1) to form a nonwoven fabric structure; and
(3) drying the nonwoven fabric structure formed in the above step (2) at 120 to 200 ℃.
12. The method of manufacturing a nonwoven fabric structure according to claim 11,
the step (1) comprises the following steps:
carding the 1 st fiber to form a 1 st mesh;
carding the 2 nd fiber to form a 2 nd mesh; and
the 1 st mesh is laminated to at least one surface of the 2 nd mesh.
13. The method of manufacturing a nonwoven fabric structure according to claim 11,
the step (1) comprises the following steps:
mixing the 1 st fibers and the 2 nd fibers; and
the mixed fibers are carded to form a fiber mesh.
14. The method of manufacturing a nonwoven fabric structure according to claim 13,
mixing the raw materials in a ratio of 1: 1 to 3: 2, the 1 st fibers and the 2 nd fibers are mixed in a weight ratio.
15. The method of manufacturing a nonwoven fabric structure according to claim 12 or 13,
in the above-mentioned hydroentangling step, water is sprayed at a pressure of 40 to 60bar from a nozzle having a hole with a diameter of 0.09 to 0.5mm and arranged at an interval of 0.3 to 0.6 mm.
16. The method of manufacturing a nonwoven fabric structure according to claim 11,
in the bicomponent fiber, synthetic resin components having different heat shrinkages are arranged in a sheath-core structure, and the core is arranged at an eccentric position of the sheath.
17. The method of manufacturing a nonwoven fabric structure according to claim 11,
the bicomponent fiber includes two or more synthetic resin components selected from the group consisting of polyethylene, polypropylene, polyethylene terephthalate, polytrimethylene terephthalate, poly-1, 4-cyclohexanedimethylterephthalate, and nylon.
CN202110117511.1A 2020-01-29 2021-01-28 Nonwoven fabric structure and method for producing same Pending CN113186651A (en)

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KR10-2020-0010648 2020-01-29

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