CN215051130U - Spunlace composite non-woven fabric with high liquid absorption and strong decontamination - Google Patents

Abstract

The utility model discloses a water thorn composite non-woven fabrics of strong decontamination of high imbibition, including first fibrous layer and second fibrous layer to form by first fibrous layer and the laminating of second fibrous layer, first fibrous layer is wet process oblique net shaping fiber network layer, and the second fibrous layer is for spunbonded web fiber network layer. The utility model discloses not only the friction adsorption power is high, and the imbibition is good, and the soil-release capability is strong to only needing in the production process to glue on line and can make, simple process is convenient, very big saving the energy consumption, reduced the material loss, reduction in production cost, simultaneously because glue the controllability of solidifying, the product characteristic can be according to the individualized customization of end user demand.

Description

Spunlace composite non-woven fabric with high liquid absorption and strong decontamination

Technical Field

The utility model relates to a water thorn non-woven fabrics technical field especially relates to a water thorn composite nonwoven fabric of high imbibition dirt removal by force.

Background

The existing PP spun-bonded composite wood pulp spunlace non-woven fabric is widely applied to the fields of industrial wiping materials, kitchen wiping materials, wet tissues and the like due to good wiping strength and good liquid absorption and decontamination capability. The production process mainly comprises two production processes, and the two production processes are both manufactured in an off-line secondary forming processing mode.

One process is to make PP spun-bonded cloth and wood pulp paper separately off-line, then to unwind by an unwinder, to laminate the two layers of materials, to entangle and reinforce them into a whole by a spunlace process, to make PP wood pulp spunlace cloth.

The other process is that the PP slices are firstly melted and extruded at high temperature by a screw extruder, filtered, metered, spun, cooled and drafted, laid into a net, thermally bonded and reinforced to form PP spunbonded fabric, and then coiled to be a package material. And secondly, wood pulp is broken into fibers and made into fiber suspension, the fiber suspension is conveyed to a wet forming machine to be dewatered to form a net, the rolled PP spun-bonded cloth is synchronously uncoiled through an uncoiler and conveyed to the upper layer or the lower layer of the wet net to be superposed with the wet net, and the PP spun-bonded cloth and the wet wood pulp layer are entangled, reinforced and compounded into a whole through a spunlace process to make the PP wood pulp spunlace cloth.

Application No. 201811459800.4 discloses a coarse grain wet process composite nonwoven fabric, which comprises a wet process wood pulp cellulose layer I, a wet process wood pulp cellulose layer II and a spun-bonded nonwoven fabric layer. The preparation method comprises the following specific steps of (1) enabling cellulose short fibers to enter a wet pulp distribution device through a pulp preparation system and then enter wet web forming equipment; (2) conveying the spun-bonded non-woven fabric to the front of wet-laid web by an unwinding device, and carrying out primary compounding with wet wood pulp; (3) the compounded wood pulp spun-bonded composite cloth is released by unwinding equipment to be conveyed to a wet-laid state for secondary wood pulp compounding to form a three-layer structure, and coarse grains are formed on the cloth surface through the arrangement of a spunlace process; (4) and (4) after dehydration and drying, winding and slitting to finish the production process of the coarse grain wet process composite non-woven fabric.

Application number 201410847273.X discloses a waterproof lock water microbubble facial mask non-woven fabrics of one side water absorption one side, characterized by: 5mm cellulose fiber with the fineness of less than or equal to 0.9 dtex is formed by spunlace compounding with a PP hydrophobic layer; the PP hydrophobic layer is PP spunbonded fabric, and each square meter of the PP hydrophobic layer is 5-15 g. The manufacturing method is characterized in that: the PP hydrophobic layer is covered on the wet fiber net after being uncoiled, the hydro-entangled head on the hydro-entangled machine carries out positive and negative multi-channel water pressure on the wet fiber net and the PP hydrophobic layer on the flexible trawl curtain, generally 2-5Mpa, the number of hydro-entangled channels is 5-7 low pressure increasing hydro-entangled, and the fine denier short fiber cellulose fiber in the hydro-entangled wet fiber net is directly entwined and clasped along with the traveling direction of the compact flexible trawl curtain, namely the moving process from an outlet of the compact flexible trawl curtain to a finished product area, the fine denier short fiber cellulose fiber in the compact flexible trawl curtain is sequentially raised from 2 Mpa to 5Mpa, so that the waterproof skin-adhering mask non-woven fabric with one water absorbing and permeating surface is formed.

The defects of the proposal are that off-line spunbonded fabric (or PP hydrophobic layer) unwinding equipment is adopted to unwind and convey the spunbonded fabric (or PP hydrophobic layer) to the wet-laid layer, and then the spunbonded fabric (or PP hydrophobic layer) is superposed with the wet-laid fiber layer and is combined into a whole through spunlace entanglement. The process can not adjust the bonding degree and the size of bonding points of the spunbonded fabric according to the characteristics of the final product and the process requirements, and the process adjustment is passive; in the process, due to the reason of thermal bonding and reinforcement of the spunbonded fabric, the structure of the spunbonded fabric is compact, wet fibers cannot completely and effectively penetrate into the internal structure of the spunbonded fabric, so that the entanglement and the compounding are insufficient, and the final product is easy to layer.

Application number 201810025487.7 discloses a wet-process multifunctional high-speed spunlace composite production line and spunlace non-woven fabrics obtained by production, the composite production line comprises a web forming device, a multi-stage spunlace device, a vacuum negative pressure suction device, a high-efficiency water rolling vehicle, a first-stage composite drying device, a flat-web spunlace device or a rotary drum spunlace device, a first flat calender, a rotary disc spray coating finishing device, a rotary disc spray dyeing device, a printing device, a second-stage drying device, a second flat calender, a third-stage drying device, a third flat calender and a post-finishing device which are sequentially arranged, and the composite production line further comprises a material returning and unwinding device or a spunbond fiber online web forming device. Paragraph 50 mentions that alternatively there is provided an in-line spunbonding device 16 downstream of the discharge of the web forming device 1 and downstream of the multi-stage hydroentangling device 2, the spunbond fiber in-line-laying apparatus provided herein can form a spunbond web in-line, in this particular embodiment using a spunbond filament polypropylene fiber in-line-laying apparatus, the spun-bonded polypropylene fiber net produced on line can be superposed with the fiber layer formed by the net forming device at the upper end, the spun-bonded fibers enter a subsequent multi-stage spunlace device together for spunlace composition, and are immediately subjected to composite spunlace with a fiber layer formed by a web forming device after the spun-bonded fibers are produced on line, compared with the material obtained by compounding the polypropylene cloth prepared by the traditional process with the fiber layer formed by the online web forming device through material returning and unreeling, the production cost of the product can be reduced, and the bulkiness of the composite product is more excellent.

The defects of the scheme are that the polypropylene spun-bonded fiber web is formed on line by utilizing the spun-bonded fiber online netting device, and the polypropylene spun-bonded fiber web is directly overlapped with the fiber layer formed by the netting device at the upper end up and down without consolidation and then enters the subsequent multi-stage spunlace device together for spunlace compounding. However, the polypropylene fiber does not absorb water basically because the moisture regain of the polypropylene fiber is 0 percent, and therefore cannot directly absorb the energy of the hydro-acupuncture for entanglement, and the hydro-entangled composite non-woven fabric obtained by the scheme is basically in a loose and fluffy state without a post-finishing mode and has no using strength, so that post-finishing processes such as flattening calendering, rotary disc spray coating finishing and the like are required for reinforcement. However, the flat calendering is basically realized in a whole-surface calendering way, so that the point bonding cannot be realized, the product thickness is reduced, and the product is relatively hardened. The coating finishing is not environment-friendly enough, and the mode can not obtain the characteristics of high dirt removing capacity and the like required by the optimal wiping material, but wastes the energy consumption of the spunlace.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least.

Therefore, the utility model discloses its technical scheme who solves technical problem and adopt is: a spunlace composite non-woven fabric with high liquid absorption and strong decontamination comprises a first fiber layer and a second fiber layer, wherein the first fiber layer and the second fiber layer are laminated to form the spunlace composite non-woven fabric, the first fiber layer is a wet-method inclined-net forming fiber net layer, the second fiber layer is a spunbonded web fiber net layer, the first fiber layer is made of 20-100% by mass of wood pulp fibers and 0-80% by mass of cellulose fibers, the second fiber layer is made of 100% by mass of synthetic fibers, thermal bonding areas and non-bonding fluffy areas are distributed in the second fiber layer, fibers of the first fiber layer penetrate into the non-bonding fluffy areas at the corresponding positions of the second fiber layer and are mutually entangled with fibers of the second layer, a plurality of through holes penetrating through the first fiber layer are further distributed on the surface of the first fiber layer, a plurality of point-like raised grains or stripe-like raised grains are further distributed on the surface of the first fiber layer, or a block-shaped raised texture.

Preferably, a plurality of exposed fibers formed by the first fiber layers in an inserting mode are distributed on the surface of the second fiber layer, and the exposed fibers are mainly distributed in a plush shape.

Preferably, the beating degree of the wood pulp in the first fiber layer is 10-20 DEG SR, the cellulose fiber in the first fiber layer is one or any combination of natural cotton fiber, viscose fiber, lyocell fiber and bamboo fiber, the fineness of the cellulose fiber in the first fiber layer is 0.3-3.5 dtex, and the length of the cellulose fiber in the first fiber layer is 3-15 mm.

Preferably, the synthetic fibers in the second fiber layer are one or any combination of polypropylene fibers, polyester fibers and polylactic acid fibers, the synthetic fibers in the second fiber layer are filaments, and the second fiber layer is consolidated through heat bonding to form a plurality of uniform and separate consolidation points.

Preferably, the shape of the consolidation point is circular, oval, diamond, square, rectangle, hexagon, rice grain, strip, cross.

Preferably, the maximum diagonal length of the consolidation point is 0.1-10 mm, and the area ratio of the consolidation point is 10-40%.

Preferably, the total area of the through holes of the first fiber layer is 5-40% of the area of the top surface of the first fiber layer.

Preferably, the first fiber layer is an online wet inclined-wire-forming fiber mesh layer, the second fiber layer is an online spun-bonded web-forming fiber mesh layer, and the unit area mass of the high-liquid-absorption strong-decontamination spunlace composite non-woven fabric is 25-120 g/square meter.

The utility model has the advantages that:

1. the beating degree of the wood pulp in the first fiber layer is 10-20 degrees SR, the appropriate beating degree can smoothly dehydrate during inclined net dehydration forming, and the higher the beating degree is, the poorer the dehydration effect is, so that the processing speed and the net forming uniformity are influenced; the appropriate beating degree reflects the fibrillation degree of the wood pulp, the more sufficient fibrillation is, the more hydrogen bonds among fibers are, the higher the dry strength of the final product is, and the more the wood pulp is difficult to fall off to form flocs;

2. the second fiber layer is consolidated by thermal bonding, the shape, size and consolidation degree of consolidation points can be adjusted, if the second fiber layer is not consolidated at all, a loose fiber net structure is presented, no bonding points exist, and the fibers of the first fiber layer can be completely covered, interpenetrated, implanted and filled in the second fiber layer, so under the condition of the same fiber mass ratio, the wiping friction force is smaller, the using strength is extremely low, the wiping requirement cannot be met, therefore, the second fiber layer is not adopted, if the second fiber layer is consolidated by slight thermal bonding, or the maximum diagonal length of the consolidation points is less than 0.3mm, the consolidation ratio area ratio is 10-20%, most of the fibers present a non-consolidation fluffy state, the fibers of the first fiber layer can be interpenetrated, implanted and filled in the second fiber layer, the second fiber layer also provides a certain strength, and the strength is superior to the completely non-consolidation state, if the second fiber layer is consolidated through conventional heat bonding, the maximum diagonal length of the consolidation point is 0.3-1.5 mm, the area percentage of the consolidation rate is 20-40%, the second fiber layer provides better strength, but the quantity of the fibers of the first fiber layer inserted into the second fiber layer is reduced, more through holes are formed, the wiping friction force is enhanced, stubborn stains can be effectively removed, when the consolidation shape is a rice grain shape, a long strip shape or a cross shape, the maximum diagonal length is not more than 10mm, the consolidation rate area is not more than 25%, otherwise, the softness of a final product can be influenced, the utility model discloses the second fiber layer is consolidated through heat bonding, the shape and the size of the consolidation point and the design with adjustable consolidation degree can adjust the consolidation degree according to the final use scene and performance requirements, and the product characteristics have pertinence;

3. because the second fiber layer has a thermal bonding and consolidation area and a non-consolidation fluffy area, the fibers of the first fiber layer are inserted into the non-consolidation fluffy area of the second fiber layer under the action of water jet and are entangled with the fibers of the second fiber layer, but because the thermal bonding and consolidation area of the second fiber layer is compact and firm, the fibers of the first fiber layer which is originally positioned at the upper layer of the thermal bonding and consolidation area can not enter the thermal bonding and consolidation area of the second fiber layer, but the fibers are displaced into the nearby non-consolidation fluffy area under the action of water power, so that through holes are formed on the surface of the first fiber layer, the roughness of the surface is increased by the through holes, the wiping friction is increased, the dirt removing and holding capacity is improved in the wiping process, the smaller the area ratio of the through holes is, the lower the friction is, and the liquid absorption is stronger;

4. because a plurality of punctiform raised grains, or stripe-shaped raised grains, or block-shaped raised grains are distributed on the surface of the first fiber layer, the grains effectively increase the specific surface area of the first fiber layer, increase the friction force and improve the wiping effect;

5. because the surface of the second fiber layer is distributed with a plurality of exposed fibers formed by the first fibers in an interpenetration mode, the exposed fibers are distributed mainly in an end head plush shape, the slippery feeling of the surface (spun-bonded surface) of the second fiber layer can be effectively reduced, the adsorbability is improved, and the liquid absorption capacity and the decontamination capacity are improved;

6. when the raw material of the first fiber web layer contains cellulose fibers, the fineness is 0.3-3.5 dtex, the length is 3-15 mm, compared with wood pulp fibers, due to the fact that the fiber length is long and the length-diameter ratio is large, good dispersion and forming can be achieved only by highly diluting a fiber suspension, the forming concentration is generally 0.02-0.05%, a sufficient space can be kept in a suspension state when the cellulose fibers are laid on a net by adopting an inclined net former to prevent flocculation, the inclined net former has the dewatering capacity of a flat net paper machine which is 5-7 times of the length, the dewatering requirement of extremely low concentration can be met, in addition, fibers are deposited on the net by the inclined net former through the vacuum suction effect during forming, the fiber arrangement has no obvious directionality during forming, and the difference of the longitudinal and transverse strengths of the manufactured first fiber layer is small.

To sum up, the utility model discloses not only adsorption affinity is strong, and the imbibition ability is good, and the detergency also very high-efficient moreover to only needing in the production process to glue on line and can make, simple process is convenient, very big saving the energy consumption reduce cost.

Description of the drawings:

fig. 1 is a schematic cross-sectional structure of the present invention;

fig. 2 is a schematic top view of the first fiber layer with dotted protrusions according to the present invention;

fig. 3 is a schematic top view of the striped protrusions of the first fiber layer of the present invention;

FIG. 4 is a schematic top view of the first fibrous layer of the present invention;

in the figure, a first fiber layer 1, a second fiber layer 2, a through hole 3 and a projection 4.

Detailed Description

The present invention is further illustrated by the following examples, but is not limited to the contents of the specification.

Example (b): referring to fig. 1 to 4, a spunlace composite nonwoven fabric with high liquid absorption and strong stain removal performance comprises a first fiber layer 1 and a second fiber layer 2, and is formed by overlapping the first fiber layer 1 and the second fiber layer 2, the first fiber layer 1 is a wet inclined-net formed fiber net layer, the second fiber layer 2 is a spunbonded fiber net layer, the first fiber layer 1 is made of 20 to 100 mass percent of wood pulp fibers and 0 to 80 mass percent of cellulose fibers, the second fiber layer 2 is made of 100 mass percent of synthetic fibers, thermal bonding and non-bonding fluffy regions are distributed in the second fiber layer 2, fibers of the first fiber layer 1 penetrate into the non-bonding fluffy regions at corresponding positions of the second fiber layer 2 and are mutually entangled with fibers of the second fiber layer 2, a plurality of through holes 3 penetrating through the first fiber layer 1 are further distributed on the surface of the first fiber layer 1, the surface of the first fiber layer 1 is also distributed with a plurality of punctiform bulges 4 grains, or stripe-shaped bulges 4 grains, or block-shaped bulges 4 grains.

The surface of the second fiber layer 2 is distributed with a plurality of bare fibers formed by the first fiber layer 1 in an inserting way, and the bare fibers are mainly distributed in a plush shape.

The beating degree of wood pulp in the first fiber layer 1 is 10-20 DEG SR, the cellulose fiber in the first fiber layer 1 is one or any combination of natural cotton fiber, viscose fiber, lyocell fiber and bamboo fiber, the fineness of the cellulose fiber in the first fiber layer 1 is 0.3-3.5 dtex, and the length of the cellulose fiber in the first fiber layer 1 is 3-15 mm.

The synthetic fiber in the second fiber layer 2 is one or any combination of polypropylene fiber, polyester fiber and polylactic acid fiber, the synthetic fiber in the second fiber layer 2 is filament, and the second fiber layer 2 is consolidated through heat bonding to form a plurality of uniform and separate consolidation points.

The shape of the consolidation point is round, oval, diamond, square, rectangle, hexagon, rice grain, strip and cross.

The maximum diagonal length of the fixed point is 0.1-10 mm, and the area ratio of the fixed point is 10-40%.

The sum of the areas of the through holes 3 of the first fiber layer 1 is 5-40% of the area of the top surface of the first fiber layer 1.

The first fiber layer 1 is a fiber net layer formed by an online wet inclined net, the second fiber layer 2 is a fiber net layer formed by an online spun-bonded net, and the unit area mass of the spunlace composite non-woven fabric with high liquid absorption and strong stain removal is 25-120 g/square meter.

It is to be understood that the above-described embodiments of the present invention are merely examples provided for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. Not all embodiments are exhaustive. All obvious changes or variations led out by the technical scheme of the utility model are still in the protection scope of the utility model.

Claims (8)

1. The utility model provides a compound non-woven fabrics of water thorn of high imbibition dirt removal, includes first fibrous layer and second fibrous layer to form its characterized in that by first fibrous layer and the laminating of second fibrous layer: the first fiber layer is a wet inclined net forming fiber net layer, the second fiber layer is a spun-bonded web forming fiber net layer, thermal bonding areas and non-bonding fluffy areas are distributed in the second fiber layer, fibers of the first fiber layer penetrate into the non-bonding fluffy areas at the corresponding positions of the second fiber layer and are mutually entangled with the fibers of the second layer, a plurality of through holes penetrating through the first fiber layer are further distributed on the surface of the first fiber layer, and a plurality of point-like raised grains, or stripe-like raised grains, or block-like raised grains are further distributed on the surface of the first fiber layer.

2. A high liquid absorbency high stain release hydroentangled composite nonwoven fabric according to claim 1, wherein: and a plurality of exposed fibers formed by the first fiber layers in an interpenetration mode are distributed on the surface of the second fiber layer, and the exposed fibers are mainly distributed in a plush shape at the end.

3. A high liquid absorbency high stain release hydroentangled composite nonwoven fabric according to claim 1, wherein: the wood pulp beating degree in the first fiber layer is 10 ~ 20 SR, the cellulose fiber fineness in the first fiber layer is 0.3 ~ 3.5dtex, the cellulose fiber length in the first fiber layer is 3 ~ 15 mm.

4. A high liquid absorbency high stain release hydroentangled composite nonwoven fabric according to claim 1, wherein: the synthetic fibers in the second fiber layer are filaments, and the second fiber layer is consolidated through heat bonding to form a plurality of uniformly distributed consolidation points.

5. The high liquid absorbency high stain release hydroentangled composite nonwoven fabric according to claim 4, wherein: the shape of the consolidation point is circular, oval, rhombic, square, rectangular, hexagonal, rice grain-shaped, long strip-shaped or cross-shaped.

6. A high liquid absorbency high stain release hydroentangled composite nonwoven fabric according to claim 5, wherein: the maximum diagonal length of the fixed point is 0.1-10 mm, and the area ratio of the fixed point is 10-40%.

7. A high liquid absorbency high stain release hydroentangled composite nonwoven fabric according to claim 1, wherein: the sum of the areas of the through holes of the first fiber layer is 5-40% of the area of the top surface of the first fiber layer.

8. A high liquid absorbency high stain release hydroentangled composite nonwoven fabric according to claim 1, wherein: the first fiber layer is a fiber net layer formed by an online wet inclined net, the second fiber layer is a fiber net layer formed by an online spun-bonded net, and the unit area mass of the high-liquid-absorption strong-decontamination spunlace composite non-woven fabric is 25-120 g/square meter.

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