CN210657386U - Combined spunlace non-woven fabric for water absorption surface layer of personal hygiene care product and production device thereof - Google Patents
Combined spunlace non-woven fabric for water absorption surface layer of personal hygiene care product and production device thereof Download PDFInfo
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- CN210657386U CN210657386U CN201920988220.8U CN201920988220U CN210657386U CN 210657386 U CN210657386 U CN 210657386U CN 201920988220 U CN201920988220 U CN 201920988220U CN 210657386 U CN210657386 U CN 210657386U
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Abstract
The utility model relates to the technical field of spunlace nonwoven, and discloses a combined spunlace nonwoven fabric for a water absorption surface layer of personal hygiene care products and a production device thereof, wherein the spunlace nonwoven fabric comprises a first fiber layer and a second fiber layer; the first fiber layer contains hydrophilic fibers; the second fiber layer contains hydrophobic fibers; the fibers in the first fibrous layer are intertwined with the fibers in the second fibrous layer; a plurality of bulges and a plurality of through holes penetrating through the second fiber layer are distributed on the surface of the first fiber layer. The utility model is composed of double layers of fibers with different liquid absorption performances, wherein, the surface contacting with the skin of the human body has hydrophilicity, which keeps the softness and the skin-friendly performance of the surface layer not to be influenced; and the other side which is not contacted with the skin of the human body has hydrophobicity, so that the proportion of the hydrophilic fiber can be reduced, the liquid storage amount of the surface layer is reduced, the liquid absorbed by the first fiber layer can be accelerated to rapidly enter the diversion layer through the second fiber layer, and the dryness and the smoothness of the surface layer material are improved.
Description
Technical Field
The utility model relates to a water thorn non-woven technology field especially relates to a combination formula water thorn non-woven fabrics and apparatus for producing that is used for personal hygiene nursing materials to absorb water surface course.
Background
The existing spunlace non-woven fabric is mainly made by taking viscose, terylene and other textile fibers as raw materials, and forming a net through mechanical carding and high-pressure jet-flow net-spraying. Because the fibers are not rigidly extruded and damaged in the process of processing the fibers by adopting the spunlace process, the physical and mechanical properties of the fibers are not influenced, and the inherent softness of the fiber web is kept to the maximum extent, the spunlace nonwoven fabric is widely applied to the field of personal hygiene care.
The common personal sanitary nursing articles (such as sanitary towels, paper diapers and the like) usually comprise a surface layer, an inner absorption layer, an anti-seepage bottom film and the like, and materials of all layers are bonded by hot melt adhesive. The surface layer is the part directly contacted with the skin, the material is soft, and the material and the structure of the surface material directly influence the reverse osmosis effect of the personal hygiene nursing product, namely the dryness of the surface material.
The personal hygiene nursing articles can be divided from surface layer materials, and can be divided into dry and comfortable mesh materials, soft cotton materials and pure cotton materials at present. Wherein, the pure cotton material is made of 100% pure cotton spunlace non-woven fabric material on the surface layer of the personal hygiene care product. Because the pure cotton spunlace non-woven fabric is made of natural cotton fibers, the sanitary towel has the characteristics of softness, air permeability, skin friendliness, safety and the like, and is deeply loved by consumers.
Patent 201410553481.9 discloses a pure cotton sanitary towel, including top layer, absorption core and barrier layer, the top layer is cotton wool cloth cover top layer, it is the antibiotic pure cotton fine hair of pure cotton non-woven fabrics parcel to absorb the core, the barrier layer includes the PE membrane on upper strata and the pure cotton non-woven fabrics of lower floor, the lamination is in the same place at top layer, absorption core and the prevention of seepage end. The sanitary towel has the advantages of good skin affinity, high water absorption and durable antibacterial property, and the defects of the scheme are that the pure cotton non-woven fabric on the surface layer has high moisture absorption speed and liquid diffusion speed, is easy to generate wet feeling and is easy to breed bacteria.
The patent with the application number of 201611040223.6 discloses a sanitary napkin, which sequentially comprises an encapsulation film, a water absorption layer, a main absorption layer and a leakage-proof breathable bottom layer from top to bottom, wherein the encapsulation film, the water absorption layer, the main absorption layer and the leakage-proof breathable bottom layer are all made of natural organic cotton cloth, and the water absorption layer and the main absorption layer are coated by a side wall film and the leakage-proof breathable bottom layer to form a whole; a cross-shaped opening is formed in the middle of the water absorption layer close to the front, and a plurality of small negative ion chips are arranged at intervals in the middle rear part of the water absorption layer; the main absorption layer sequentially comprises a first absorption layer, a second absorption layer and a third absorption layer from top to bottom, the edges of the first absorption layer and the third absorption layer form an overlapping structure, and the left side and the right side of the third absorption layer are respectively provided with a main absorption layer side wing; the bottom surface of the leak-proof breathable bottom layer is provided with an adhesive layer, the adhesive layer comprises a plurality of adhesive dots, and packaging paper is attached to the lower portion of the adhesive layer. The scheme has the defects of large contact area between human skin and the surface layer of the sanitary towel, poor air permeability and easy generation of wet feeling.
Application number is 201720253697.2's patent discloses a prevent ventilative sanitary towel of edge leakage, which comprises a surface layer, the inside absorption inner core that is equipped with of surface layer, the interior from the top down of absorption inner core is bamboo fiber layer, the cotton layer of silk, absorbent resin layer and PE prevention of seepage bottom in proper order, absorb the inside a plurality of ventilative pillars that are equipped with of inner core, it is equipped with the blue core of water conservancy diversion to absorb the inner core surface, be equipped with the choked flow protecting groove around the absorption inner core, choked flow protecting groove both sides all are equipped with the backward flow groove, the surface layer both sides are equipped with the flap. The utility model discloses an increase ventilative pillar, when menstrual period women produced a large amount of sweat in the hot or motion of weather, can discharge the sweat through ventilative pillar, avoid because diseases such as eczema that the sweat can't discharge and lead to, still avoided because the pudendum bacterial growing's that can not effectively perspire and lead to problem, through the choked flow guard groove two and the backward flow groove that are equipped with, can prevent the side seepage effectively, even the side leakage also can flow back through the backward flow groove, can not outwards leak again. The technical scheme has the defects that the contact area of skin and the surface layer is large, moist feeling is easy to generate, and the air permeability is poor.
Because the cotton fiber is a porous substance and a plurality of hydrophilic groups (-OH) exist on cellulose macromolecules, the moisture absorption of the cotton fiber is good, and the moisture regain of the cotton fiber can reach about 8.5 percent under the common atmospheric condition. Therefore, for personal hygiene nursing products with hydrophilic materials (such as pure cotton spunlace fabric, viscose spunlace fabric, tencel spunlace fabric, bamboo fiber spunlace fabric and the like) adopted on the surface layer, when liquid permeates from the contact surface layer to the diversion layer and the absorption core material, the transverse wetting and diffusion are also included in the process of longitudinal permeation of the liquid. Above-mentioned process can make the wetted area grow of top layer contact surface, and great wetted area can make the dry and comfortable nature in material surface reduce, influences the comfort in the use, forms moist environment between moist top layer and the human body simultaneously, is favorable to breeding of bacterium more.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems that the surface layer of the existing personal hygiene nursing article taking hydrophilic materials as the surface layer is large in wetting area, easy to wet and easy to breed bacteria, the utility model provides a combined spunlace non-woven fabric for the water absorption surface layer of the personal hygiene nursing article and a production device thereof.
The utility model discloses a concrete technical scheme does: a combined spunlace nonwoven fabric for a water absorption surface layer of a personal hygiene care product comprises a first fiber layer and a second fiber layer which are overlapped and connected up and down; the first fiber layer contains hydrophilic fibers; the second fiber layer contains hydrophobic fibers; the fibers in the first fibrous layer are intertwined with the fibers in the second fibrous layer; a plurality of bulges and a plurality of through holes penetrating through the second fiber layer are distributed on the surface of the first fiber layer; the opening area of the through holes on the top surface of the first fiber layer is larger than that on the bottom surface of the second fiber layer.
Preferably, the aperture ratio of the through holes on the combined spunlace non-woven fabric is 8-45%; the bulges and the through holes are distributed in an alternative arrangement.
Preferably, the hydrophilic fiber in the first fiber layer is a plant fiber or a regenerated cellulose fiber.
Further preferably, the hydrophilic fiber in the first fiber layer is one or more of cotton fiber, hemp fiber, viscose fiber, Lyocell (Lyocell) fiber, Modal (Modal) fiber, bamboo pulp fiber, cuprammonium fiber and acetate fiber.
Preferably, the hydrophobic fibers in the second fibrous layer are synthetic fibers; the official moisture regain of the hydrophilic fibers in the first fiber layer is more than or equal to 7 percent; the official moisture regain of the hydrophobic fibers in the second fiber layer is less than or equal to 4.5 percent.
As a further preference, the hydrophobic fibers in the second fiber layer are one or more of Polyester (PET) fibers, Polyamide (PA) fibers, polypropylene (PP) fibers and polylactic acid (PLA) fibers.
Preferably, the hydrophobic fibers in the second fiber layer are ultrashort synthetic fibers with the length of 5-15 mm.
The fiber web made of the ultrashort synthetic fiber has good uniformity, is suitable for forming the fiber web with low gram weight, and is more favorable for the rapid penetration of liquid.
Preferably, the hydrophobic fibers in the second fiber layer are ultrashort synthetic fibers of biomass, and ultrashort polylactic acid fibers are more preferable.
Biomass fiber refers to fiber produced from an organism or an extract of an organism, that is, a fiber derived from renewable biomass produced by photosynthesis using the atmosphere, water, land, or the like. According to raw materials and production processes, biomass fibers can be divided into three major categories, namely biomass primary fibers, biomass regenerated fibers and biomass synthetic fibers. Synthetic fiber materials such as terylene, polypropylene fiber, hot melt fiber and the like used in the existing personal care products are not degradable and have high carbon emission, so that the requirements of sustainable development and low-carbon economy are not met, and the first fiber layer preferably adopts natural cotton fiber and the like in the technical scheme of the utility model, belonging to biomass protogenic fiber; the second fiber layer is preferably polylactic acid fiber, and belongs to biomass synthetic fiber. The two types of biomass fibers can be naturally degraded, meet the goal of national development strategy, conform to the social development trend and have good economic and social benefits.
Preferably, the second fiber layer contains low-melting-point super short fibers accounting for 3-20% of the total mass of the combined spunlace non-woven fabric.
After part of the low-melting-point ultrashort fibers are added into the second fiber layer, the low-melting-point ultrashort fibers are melted in the drying process, so that the fibers in the second fiber layer can be bonded with each other, the softness of the first fiber layer on the surface is not influenced, and the lasting and stable effect of the protruding effect on the surface of the first fiber layer is facilitated (the low-melting-point fibers play a shaping effect after being re-solidified).
Preferably, the low-melting-point super short fiber has a melting point of 105 to 140 ℃.
Preferably, the upper surface of the first fiber layer is provided with a water repellent layer, and the water wetting grade is 2-3.
The water repellent layer has the following functions: the first fiber layer has hydrophilicity, and is subjected to proper slight water repellent treatment on the surface of the first fiber layer, so that the outer surface of the fiber is wrapped with a layer of water repellent agent, and liquid can penetrate through the surface layer fiber and reach the flow guide layer and can not be absorbed and stored by the fiber in the first fiber net; especially, when the surface layer is extruded, the penetrated liquid can not reversely penetrate into the surface layer, thereby achieving the purpose of making the surface layer drier and more comfortable.
Preferably, the water repellent layer in the water repellent layer is a fluoride-containing water repellent. The reason is as follows: among various water repellent agents, the fluoride-containing water repellent agent has the best water and oil repellent effect, and has the advantages of good durability, simple process and convenient processing.
Preferably, the unit area mass of the combined spunlace non-woven fabric is 30-80 g/m2。
Adopt the utility model discloses above technical scheme's advantage as follows:
(1) when the surface layer of the personal care product made of the hydrophilic fiber is contacted with liquid, the surface layer is quickly adsorbed by the hydrophilic fiber in the surface layer and then permeates into the diversion layer and the absorption layer; along with the increase of the amount of the liquid, the hydrophilic fiber can generate larger swelling, and the swelling degree blocks the pore canal of the liquid which permeates from the surface layer to the diversion layer, so that the moisture absorption speed and the moisture diffusion speed are reduced. Because the liquid can not permeate the diversion layer quickly and can only be stored in the surface layer, people feel uncomfortable feeling of stuffiness and wetness when using the liquid. The utility model discloses in, because first fibrous layer surface is equipped with the through-hole, when liquid and surface course contact, not all liquid all are adsorbed by hydrophilic fiber, but during partial liquid can permeate the water conservancy diversion layer rapidly through the through-hole, because the fibre of second fibrous layer is hydrophobic nature, consequently can accelerate to permeate liquid to the water conservancy diversion layer, reduced the persistence of surface course liquid, improved the travelling comfort that nursing materials used.
In addition, most of the surface layer materials of the existing personal hygiene care products are single-layer same materials, such as spunlace nonwoven fabrics made of 100% cotton fibers. Due to the requirement of processing equipment on the lowest gram weight of the material, the using amount of the hydrophilic fiber cannot be reduced, so that the problems that the surface material has large liquid absorption amount, large wetting area, difficult liquid discharge and the like are caused; the utility model adopts a double-layer structure, which can reduce the amount of hydrophilic fiber and improve the dryness of the surface material.
Because the cotton fiber is a porous substance and a plurality of hydrophilic groups (-OH) exist on cellulose macromolecules, the cotton fiber has super-strong water absorption capacity, when the unit area is high in quality, the liquid absorption amount and the liquid storage amount of the surface layer material are increased, liquid cannot enter the diversion layer quickly, and the dryness of the surface layer material is reduced. Therefore, the surface layer material of the utility model is composed of double layers of fibers with different liquid absorption performances, wherein, the surface (the first fiber layer) contacting with the skin of the human body has hydrophilicity, which keeps the softness and the skin-friendly performance of the surface layer not to be influenced; and the other side (the second fiber layer) which is not contacted with the skin of the human body has hydrophobicity, and by adopting the double-layer arrangement, the proportion of the hydrophilic fiber can be reduced, the liquid storage amount of the surface layer is reduced, the liquid absorbed by the first fiber layer can be accelerated to rapidly enter the flow guide layer through the second fiber layer, and the dryness and the smoothness of the surface layer material are improved.
(2) When the personal sanitary nursing article is used, the surface layer material is directly contacted with the skin of a human body, and when the surface layer adopts the hydrophilic fiber material, liquid not only permeates from the surface layer to the flow guide layer and the absorption core, but also can generate transverse wetting and diffusion. Above-mentioned process can make the wetted area grow of top layer contact surface, and great wetted area can make the dry and comfortable nature in material surface reduce, influences the comfort in the use, forms moist environment between moist top layer and the human body simultaneously, is favorable to breeding of bacterium more. The utility model discloses technical scheme first fibrous layer has hydrophilicity to there are a plurality of archs and run through the through-hole at surface distribution. By adopting the arrangement, due to the action of the bulges and the through holes on the outer surface, the range of wetting and diffusion of the hydrophilic fiber in the first fiber layer after imbibing liquid is limited, and compared with the non-woven fabric with a flat surface, the wetting area of the surface layer is reduced, and the comfort of the material is improved;
(3) adopt the through-hole setting of infundibulate among this technical scheme, the effect lies in: the funnel-shaped through hole is arranged, so that liquid or human secretion can smoothly infiltrate downwards through the open hole. In addition, the funnel-shaped through hole can enable the lower end opening to be easily closed when the first fiber layer is pressed in use, so that a human body is prevented from being contacted with liquid or human secretion absorbed in the flow guide layer, and the moisture insulation effect of the non-woven fabric is improved. In a word, the funnel-shaped through holes are arranged on the surface, so that the contact area between the middle layer and the skin is reduced, and the personal care product has the characteristics of comfort, dryness and skin friendliness.
In summary, in the technical scheme of the application, the surface layer material adopts a double-layer structure, so that the using amount of the water-absorbent fibers is reduced, the liquid absorption amount of the surface layer is reduced, and the liquid permeation is accelerated; the contact area between the skin of the human body and the surface layer is reduced by the arrangement of the bulges on the surface of the first fiber layer; the arrangement of the conical through holes on the surface of the first fiber layer accelerates the permeation speed of surface layer liquid and prevents the liquid from reverse permeation. Through the synergistic effect of the technical characteristics, the problems that the personal hygiene care product taking the hydrophilic material as the surface layer has large surface layer wetting area, is easy to wet, is easy to breed bacteria and the like are solved.
The utility model also provides an apparatus for producing of above-mentioned combination formula water thorn non-woven fabrics, the device includes according to material direction of delivery in proper order: the device comprises a forming net which is conveyed in a circulating manner, a stripping device, a suction device, a spunlace net supporting curtain which is conveyed in a circulating manner, a spunlace drum, a plurality of cloth guide rollers, a conveying curtain and a dewatering device.
The forming net is obliquely arranged above the spunlace supporting net curtain; the stripping device is arranged at the bottom of the forming net. The pipetting device is arranged on the spunlace support screen; a pre-wetting roller and a plurality of flat net spunlace heads are sequentially arranged above the spunlace supporting screen along the conveying direction; and a plurality of circular drum spunlace heads are arranged on the outer side of the circumferential surface of the spunlace circular drum.
Preferably, the suction and moving device is a suction and moving roller provided with a vacuum suction opening.
Compared with the drying method, the vacuum suction dehydration method can avoid the material from being extruded and deformed, improve the thickness of the material to the maximum extent and ensure that the material has plump hand feeling.
The dehydration device is a vacuum suction device and is arranged below the conveying curtain.
The specification of the spunlace web supporting curtain is 90-100 meshes.
The utility model discloses the second fibrous layer adopts length to be 5 ~ 15 mm's ultrashort synthetic fiber, because ultrashort fiber length is shorter, consequently, when openly water thorn is carried out to the fibre web, under the impact of high-pressure rivers, cause the ultrashort fibre to receive the impact easily and see through water thorn support wire netting and run off, consequently, improve the density that water thorn held in the palm the wire netting, set up it into 90 ~ 100 meshes, can obviously reduce ultrashort fibrous loss, guarantee the normal clear of production.
Compared with the prior art, the beneficial effects of the utility model are that:
(1) the utility model discloses technical scheme is through a plurality of archs of combination formula water thorn non-woven fabrics surface distribution and a plurality of settings that run through the through-hole, has injectd the scope that takes place moist diffusion behind the fibre imbibition in the hydrophilicity top layer, compares with ordinary hydrophilicity top layer non-woven fabrics among the prior art, has reduced the moist area on top layer, has improved the material travelling comfort.
(2) The utility model discloses hydrophilic top layer is equipped with the through-hole among the technical scheme, and when liquid and top layer contact, partial liquid can permeate the water conservancy diversion layer rapidly through the through-hole for with liquid infiltration to the water conservancy diversion layer, reduced the persistence of surface course liquid, improved the travelling comfort that nursing materials used.
(3) The technical proposal of the utility model is that the surface layer material is composed of double layers of fibers with different liquid absorption performances, wherein, the surface (the first fiber layer) contacting with the skin of the human body has hydrophilicity, which keeps the softness and the skin-friendly performance of the surface layer not to be influenced; and the other side (the second fiber layer) which is not contacted with the skin of the human body has hydrophobicity, and by adopting the double-layer arrangement, the proportion of the hydrophilic fiber can be reduced, the liquid storage amount of the surface layer is reduced, the liquid absorbed by the first fiber layer can be accelerated to rapidly enter the flow guide layer through the second fiber layer, and the dryness and the smoothness of the surface layer material are improved.
In addition, according to the technical scheme, the low-melting-point super short fibers are added into the second fiber layer, so that the low-melting-point fibers are melted in the drying process of the material, and the fibers in the second fiber layer can be bonded with each other, so that the softness of the first fiber layer on the surface is not influenced, the lasting and stable effect of the protrusion on the surface of the first fiber layer is facilitated, and the dryness of the surface layer of the nursing article is further facilitated to be improved.
(4) In the preparation process of the product, the problem that the low-quantification wet-process fiber web (second fiber layer) cannot be smoothly transferred to a spunlace system due to low fiber web strength is solved by adopting the stripping device and the pipetting device, and the normal operation of production and processing is ensured.
(5) In the preparation of the product, the surface of the first fiber net forms a protruding effect through the spunlace jacquard circular drum, and then the cloth cover forms a through funnel-shaped through hole by utilizing mechanical punching, so that the protruding effect can be ensured to be obvious and lasting by adopting the preparation method; the pore-forming shape is regular, the edge is clear and beautiful, the liquid permeation speed is high, and the liquid reverse permeation is prevented. Mechanical punching is adopted to replace spunlace hole forming, the problems of water needle blockage, water and electric resource waste and the like in the spunlace hole forming preparation process are avoided, and the energy-saving and environment-friendly principle is met.
Drawings
Fig. 1 is a schematic top view of a first fiber layer of a combined spunlace nonwoven fabric according to embodiment 1 of the present invention;
FIG. 2 is a schematic cross-sectional view of a combined spunlace nonwoven fabric according to embodiment 1 of the present invention;
FIG. 3 is a schematic view of a combined spunlace nonwoven fabric production apparatus according to embodiment 1 of the present invention;
fig. 4 is a schematic cross-sectional structure diagram of the combined spunlace nonwoven fabric according to embodiment 5 of the present invention.
The reference signs are: the device comprises a first fiber layer 1, a second fiber layer 2, protrusions 3, through holes 4, a forming net 5, a stripping device 6, a pipetting device 7, a spunlace supporting net curtain 8, a spunlace round drum 9, a cloth guide roller 10, a conveying curtain 11, a dewatering device 12, a flat net spunlace head 13, a round drum spunlace head 14, a pre-wetting roller 15, a combined spunlace non-woven fabric 16 and a water repellent layer 17.
Detailed Description
The present invention will be further described with reference to the following examples.
General examples
A combination formula water thorn non-woven fabrics for personal hygiene nursing materials surface course that absorbs water, the unit area quality is 30 ~ 80g/m2. As shown in fig. 1-2, it comprises a first fiber layer 1 and a second fiber layer 2 which are connected by overlapping up and down; the first fiber layer contains 70-100 wt% of hydrophilic fibers; the second fiber layer contains 80-100 wt% of hydrophobic fibers; the fibers in the first fibrous layer are intertwined with the fibers in the second fibrous layer; a plurality of bulges 3 and a plurality of through holes 4 penetrating through the second fiber layer are distributed on the surface of the first fiber layer; the opening area of the through holes on the top surface of the first fiber layer is larger than that on the bottom surface of the second fiber layer.
Preferably, the aperture ratio of the through holes on the combined spunlace non-woven fabric is 8-45%; the bulges and the through holes are distributed in an alternative arrangement.
Preferably, the hydrophilic fiber in the first fiber layer is a plant fiber or a regenerated cellulose fiber. The hydrophobic fibers in the second fibrous layer are synthetic fibers.
Further preferably, the hydrophilic fiber in the first fiber layer is one or more of natural cotton fiber, hemp fiber, viscose fiber, Lyocell (Lyocell) fiber, Modal (Modal) fiber, bamboo pulp fiber, cuprammonium fiber and acetate fiber.
Preferably, the hydrophobic fibers in the second fiber layer are one or more of Polyester (PET) fibers, Polyamide (PA) fibers, polypropylene (PP) fibers and polylactic acid (PLA) fibers.
The official moisture regain of the hydrophilic fibers in the first fiber layer is more than or equal to 7 percent; the official moisture regain of the hydrophobic fibers in the second fiber layer is less than or equal to 4.5 percent.
Preferably, the hydrophobic fibers in the second fiber layer are ultrashort synthetic fibers with the length of 5-15 mm. It is further preferred that the hydrophobic fibers in the second fiber layer are ultrashort synthetic fibers of biomass, most preferably ultrashort polylactic acid fibers.
Preferably, the second fiber layer contains 3-20% of low-melting-point super short fibers in percentage by mass of the combined spunlace non-woven fabric, and the melting point of the low-melting-point super short fibers is 105-140 ℃.
Preferably, the upper surface of the first fiber layer is provided with a water repellent layer, and the water repellent grade is 2-3 grade; the water repellent agent of the water repellent layer is a fluoride-containing water repellent agent.
A preparation method of the combined spunlace non-woven fabric comprises the following steps:
1) feeding the raw materials of the second fiber layer into a discharge tank in proportion for fiber dispersion to prepare fiber slurry with the concentration of 0.1-1 wt%; removing impurities and fiber groups to make the fibers in the fiber slurry in a single fiber state.
2) Stirring and diluting the fiber slurry, then sending the fiber slurry into an inclined wire former through a slurry flushing pump, and preparing a second fiber layer after wire feeding, forming and dewatering; a second fibrous layer is placed on the forming wire.
3) The raw materials of the first fiber layer are fed in proportion and then are subjected to opening, mixing and carding processes in sequence to prepare the first fiber layer.
4) The first fibrous layer is introduced onto the hydroentangling web-supporting curtain, and the second fibrous layer is peeled off from the forming web and transferred onto the first fibrous layer, so that the two fibrous webs are superposed on the hydroentangling web-supporting curtain.
Wherein, air blown out from an air outlet transversely arranged on a stripping device arranged at the bottom of the forming net is used for forming a gap between the second fiber layer attached on the forming net and the forming net so as to separate the second fiber layer from the forming net; the wind pressure of the air outlet is 10-50 kPa.
5) The spunlace supporting curtain advances, prewetting, front spunlace and back spunlace are respectively carried out on the superposed fiber webs, the first fiber layer is connected with the second fiber layer through mutual entanglement of fibers, and a plurality of convex grains are formed on the surface of the first fiber layer through a spunlace circular drum. The pre-wet spunlace pressure is 10-20 bar; the front spunlace pressure is 50-100 bar; and the reverse spunlace pressure is 60-120 bar.
6) Removing water from the spunlaced material (vacuum suction), drying (hot air penetration type), mechanically perforating (adopting a conical pricking pin with a large upper part and a small lower part), and coiling to obtain the finished product.
Preferably, in the step 6), the water is removed from the spunlaced material, and the finished product is prepared after water repellent finishing, drying, mechanical punching and coiling.
Preferably, in the step 6), the water-repellent finishing is a foam water-repellent finishing.
As shown in fig. 3, a combined spunlace nonwoven fabric production device sequentially comprises the following components in the material conveying direction: a forming net 5 which is conveyed circularly, a stripping device 6, a suction device 7, a spunlace supporting net curtain 8 which is conveyed circularly, a spunlace circular drum 9, a plurality of cloth guide rollers 10, a conveying curtain 11 and a dewatering device 12.
The forming net is obliquely arranged above the spunlace supporting net curtain; the stripping device is arranged at the bottom of the forming net; the pipetting device is arranged on the spunlace support screen; a pre-wetting roller 15 and a plurality of flat net spunlace heads 13 are sequentially arranged above the spunlace supporting screen along the conveying direction; and a plurality of circular drum spunlace heads 14 are arranged on the outer side of the circumferential surface of the spunlace circular drum. The suction and moving device is a suction and moving roller provided with a vacuum suction opening; the dehydration device is a vacuum suction device and is arranged below the conveying curtain; the specification of the spunlace web supporting curtain is 90-100 meshes.
Example 1
As shown in figures 1-2, a combined spunlace nonwoven fabric for a water absorption surface layer of a personal hygiene care product comprises a first fiber layer and a second fiber layer which are overlapped and connected up and down; the first fiber layer contains 100% of cotton fibers by mass; the second fiber layer contains 100 mass percent of hydrophobic fibers; the fibers in the first fiber layer and the second fiber layer are mutually entangled; a plurality of bulges and a plurality of through holes penetrating through the second fiber layer are distributed on the surface of the first fiber layer; the opening area of the through holes on the top surface of the first fiber layer is larger than that on the bottom surface of the second fiber layer.
The aperture ratio of the through hole is 35%; the bulges and the through holes are distributed in an alternative arrangement; the official moisture regain of the hydrophilic fibers in the first fiber layer is 8.5%; the official moisture regain of the hydrophobic fibers in the second fiber layer is 0.5%; (ii) a The hydrophobic fibers in the second fiber layer are ultrashort polylactic acid fibers; the length of the ultrashort polylactic acid fiber is 10 mm; the second fiber layer contains low-melting-point super short fibers accounting for 5% of the total unit area by mass; the melting point of the low-melting-point super short fiber is 130 ℃. The unit area mass of the combined spunlace non-woven fabric is 40g/m2。
A preparation method of a combined spunlace non-woven fabric comprises the following steps:
(1) feeding the ultrashort synthetic fiber and the hot-melt ultrashort fiber into a discharge tank in proportion, and dispersing the fibers in the discharge tank to prepare fiber slurry with the concentration of 0.5%; removing impurities and fiber clusters in the fiber slurry to make the fibers in the slurry in a single fiber state.
(2) Stirring and diluting the fiber slurry, then sending the fiber slurry into an inclined wire former through a slurry flushing pump, and preparing a second fiber layer through the processes of wire feeding, forming, dewatering and the like; the second fibrous layer is disposed on the forming wire.
(3) After the hydrophilic fibers are fed in proportion, the first fiber layer is prepared by the processes of opening, mixing and carding in sequence.
(4) The first fiber layer is introduced onto the spunlace web-supporting curtain, the second fiber layer is peeled off from the forming net and transferred to the upper side of the first fiber layer, and the two fiber nets are overlapped on the spunlace web-supporting curtain.
(5) The spunlace supporting curtain advances, spunlace is respectively carried out on the front side and the back side of the superposed fiber web, the first fiber layer is connected with the second fiber layer through mutual entanglement of fibers, and a plurality of convex grains are formed on the surface of the first fiber layer through a spunlace circular drum.
(6) Removing water from the spunlaced material, drying, mechanically perforating, and coiling to obtain 40g/m2A combined spunlace non-woven fabric.
In the step (4), a stripping device is arranged below the forming net, and a gap is formed between the second fiber layer attached to the forming net and the forming net through air blown out from an air outlet transversely arranged on the stripping device so as to be separated; the air pressure of the air outlet of the stripping device is 30 kPa.
In the step (4), after the stripping device, a suction device is arranged above the second fiber layer, and the second fiber layer is smoothly transferred from the forming net to the first fiber layer on the spunlace supporting net curtain through the negative pressure suction effect of an air suction port on the suction device;
in the step (5), the superposed fiber web is pre-wetted by a pre-wetting roller, then a flat-screen spunlace head is adopted to perform multi-channel spunlace on the front surface of the superposed fiber web, and a round-drum spunlace head is adopted to perform multi-channel spunlace on the back surface of the superposed fiber web; wherein the pressure of the water stabs on the pre-wetting roller is 15 bar; the front spunlace pressure is 70 bar; the reverse hydroentangling pressure was 90 bar.
In the mechanical punching procedure in the step (6), the conical felting needles with large upper parts and small lower parts are adopted to form funnel-shaped through holes on the cloth surface. And (5) removing the moisture of the material by adopting a vacuum suction mode in the step (6). The drying mode in the step (6) is a hot air penetration type.
A combined spunlace nonwoven fabric production device for a water absorption surface layer of a personal hygiene care product sequentially comprises the following components in the material conveying direction: a forming net which is conveyed circularly, a stripping device, a transfer device, a spunlace net supporting curtain which is conveyed circularly, a spunlace drum, a plurality of cloth guide rollers, a conveying curtain and a dewatering device.
The forming net is obliquely arranged above the spunlace supporting net curtain; the stripping device is arranged on the inner side of the forming net; the transfer device is arranged on the outer side of the forming net and above the spunlace supporting net curtain after the stripping device; a plurality of flat net spunlace heads are arranged above the spunlace supporting screen; the spunlace circular drum is arranged on the outer side of the spunlace supporting screen, and a plurality of circular drum spunlace heads are arranged on the outer side of the circumferential surface of the spunlace circular drum;
a pre-wetting roller is arranged above the spunlace supporting screen behind the transfer device; the stripping device is a stripping device with an air blowing port; the transfer device is a transfer roller and adopts a vacuum suction mode; the dehydration device is a vacuum suction device and is arranged below the conveying curtain; the specification of the spunlace web supporting curtain is 95 meshes.
Example 2
A combined spunlace nonwoven fabric for a water absorption surface layer of a personal hygiene care product comprises a first fiber layer and a second fiber layer which are overlapped and connected up and down; the first fiber layer contains 80 mass percent of hydrophilic fibers and 20 mass percent of polyester fibers; the second fiber layer contains 90% of hydrophobic fibers and 10% of ultrashort viscose fibers by mass percentage; the fibers in the first fiber layer and the second fiber layer are mutually entangled; a plurality of bulges and a plurality of through holes penetrating through the second fiber layer are distributed on the surface of the first fiber layer; the opening area of the through holes on the top surface of the first fiber layer is larger than that on the bottom surface of the second fiber layer.
The aperture ratio of the through hole is 45%; the bulges and the through holes are distributed in an alternative arrangement; the official moisture regain of the hydrophilic fibers in the first fiber layer is 13%; the official moisture regain of the hydrophobic fibers in the second fiber layer is 0.4%; the hydrophilic fibers in the first fiber layer are viscose fibers; the hydrophobic fibers in the second fiber layer are synthetic fibers; the second fiber layer is ultra-short synthetic fiber;
the hydrophobic fibers in the second fiber layer are ultra-short polyester fibers; the length of the ultra-short polyester fiber is 15 mm; the second fiber layer contains 3% of low-melting-point super short fiber in percentage by mass of the total unit area; the melting point of the low-melting-point super short fiber is 140 ℃. The unit area mass of the combined biomass spunlace non-woven fabric is 80g/m2。
A preparation method of a combined spunlace non-woven fabric comprises the following steps:
(1) feeding the ultrashort synthetic fibers, the hot-melt ultrashort fibers and the ultrashort viscose fibers into a discharge tank in proportion, and dispersing the fibers in the discharge tank to prepare fiber slurry with the concentration of 1%; removing impurities and fiber clusters in the fiber slurry to make the fibers in the slurry in a single fiber state.
(2) Stirring and diluting the fiber slurry, then sending the fiber slurry into an inclined wire former through a slurry flushing pump, and preparing a second fiber layer through the processes of wire feeding, forming, dewatering and the like; the second fibrous layer is disposed on the forming wire.
(3) After the hydrophilic fiber and the polyester fiber are fed in proportion, the first fiber layer is prepared through the processes of opening, mixing and carding in sequence.
(4) The first fiber layer is introduced onto the spunlace web-supporting curtain, the second fiber layer is peeled off from the forming net and transferred to the upper side of the first fiber layer, and the two fiber nets are overlapped on the spunlace web-supporting curtain.
(5) The spunlace supporting curtain advances, spunlace is respectively carried out on the front side and the back side of the superposed fiber web, the first fiber layer is connected with the second fiber layer through mutual entanglement of fibers, and a plurality of convex grains are formed on the surface of the first fiber layer through a spunlace circular drum.
(6) Removing water from the spunlaced material, drying, mechanically perforating, and coiling to obtain 80g/m2A combined spunlace non-woven fabric.
In the step (4), a stripping device is arranged below the forming net, and a gap is formed between the second fiber layer attached to the forming net and the forming net through air blown out from an air outlet transversely arranged on the stripping device so as to be separated; the air pressure of the air outlet of the stripping device is 50 kPa.
In the step (4), after the stripping device, a suction device is arranged above the second fiber layer, and the second fiber layer is smoothly transferred from the forming net to the first fiber layer on the spunlace supporting net curtain through the negative pressure suction effect of an air suction port on the suction device;
in the step (5), the superposed fiber web is pre-wetted by a pre-wetting roller, then a flat-screen spunlace head is adopted to perform multi-channel spunlace on the front surface of the superposed fiber web, and a round-drum spunlace head is adopted to perform multi-channel spunlace on the back surface of the superposed fiber web; wherein the pressure of the water stabs on the pre-wetting roller is 20 bar; the front spunlace pressure is 100 bar; the reverse hydroentangling pressure was 120 bar.
In the mechanical punching procedure in the step (6), the conical felting needles with large upper parts and small lower parts are adopted to form funnel-shaped through holes on the cloth surface. And (5) removing the moisture of the material by adopting a vacuum suction mode in the step (6). The drying mode in the step (6) is a hot air penetration type.
Example 3
A combined spunlace nonwoven fabric for a water absorption surface layer of a personal hygiene care product comprises a first fiber layer and a second fiber layer which are overlapped and connected up and down; the first fiber layer contains 70 mass percent of hydrophilic fibers and 30 mass percent of polyester fibers; the second fiber layer contains 80% of hydrophobic fibers and 20% of ultrashort viscose fibers by mass percentage; the fibers in the first fiber layer and the second fiber layer are mutually entangled; a plurality of bulges and a plurality of through holes penetrating through the second fiber layer are distributed on the surface of the first fiber layer; the opening area of the through holes on the top surface of the first fiber layer is larger than that on the bottom surface of the second fiber layer.
The aperture ratio of the through hole is 8%; the bulges and the through holes are distributed in an alternative arrangement; the official moisture regain of the hydrophilic fibers in the first fiber layer is 10 percent; the official moisture regain of the hydrophobic fibers in the second fiber layer is 0.5%; the hydrophilic fiber in the first fiber layer is Lyocell (Lyocell) fiber; the hydrophobic fibers in the second fiber layer are synthetic fibers; the second fiber layer is ultra-short synthetic fiber;
the hydrophobic fibers in the second fiber layer are biomass ultrashort synthetic fibers; the hydrophobic fibers in the second fiber layer are ultrashort polylactic acid fibers; the length of the ultrashort polylactic acid fiber is 5 mm; the second fiber layer contains low-melting-point super short fibers accounting for 20% of the total unit area by mass; the melting point of the low-melting-point super short fiber is 105 ℃. The unit area mass of the combined biomass spunlace non-woven fabric is 30g/m2。
A preparation method of a combined spunlace non-woven fabric comprises the following steps:
(1) feeding the ultrashort synthetic fibers, the hot-melt ultrashort fibers and the ultrashort viscose fibers into a discharge tank in proportion, and dispersing the fibers in the discharge tank to prepare fiber slurry with the concentration of 0.1%; removing impurities and fiber clusters in the fiber slurry to make the fibers in the slurry in a single fiber state.
(2) Stirring and diluting the fiber slurry, then sending the fiber slurry into an inclined wire former through a slurry flushing pump, and preparing a second fiber layer through the processes of wire feeding, forming, dewatering and the like; the second fibrous layer is disposed on the forming wire.
(3) After the hydrophilic fiber and the polyester fiber are fed in proportion, the first fiber layer is prepared through the processes of opening, mixing and carding in sequence.
(4) The first fiber layer is introduced onto the spunlace web-supporting curtain, the second fiber layer is peeled off from the forming net and transferred to the upper side of the first fiber layer, and the two fiber nets are overlapped on the spunlace web-supporting curtain.
(5) The spunlace supporting curtain advances, spunlace is respectively carried out on the front side and the back side of the superposed fiber web, the first fiber layer is connected with the second fiber layer through mutual entanglement of fibers, and a plurality of convex grains are formed on the surface of the first fiber layer through a spunlace circular drum.
(6) Removing water from the spunlaced material, drying, mechanically perforating, and coiling to obtain a product with a density of 30g/m2A combined spunlace non-woven fabric.
In the step (4), a stripping device is arranged below the forming net, and a gap is formed between the second fiber layer attached to the forming net and the forming net through air blown out from an air outlet transversely arranged on the stripping device so as to be separated; the air pressure of the air outlet of the stripping device is 10 kPa.
In the step (4), after the stripping device, a suction device is arranged above the second fiber layer, and the second fiber layer is smoothly transferred from the forming net to the first fiber layer on the spunlace supporting net curtain through the negative pressure suction effect of an air suction port on the suction device;
in the step (5), the superposed fiber web is pre-wetted by a pre-wetting roller, then a flat-screen spunlace head is adopted to perform multi-channel spunlace on the front surface of the superposed fiber web, and a round-drum spunlace head is adopted to perform multi-channel spunlace on the back surface of the superposed fiber web; wherein the pressure of the water stabs on the pre-wetting roller is 10 bar; the front spunlace pressure is 50 bar; the reverse hydroentangling pressure was 60 bar.
In the mechanical punching procedure in the step (6), the conical felting needles with large upper parts and small lower parts are adopted to form funnel-shaped through holes on the cloth surface. And (5) removing the moisture of the material by adopting a vacuum suction mode in the step (6). The drying mode in the step (6) is a hot air penetration type.
Example 4
The present embodiment is different from embodiment 1 in that: the second fibrous layer does not contain low-melting-point ultra-short fibers.
Example 5
As shown in fig. 4, the present embodiment is different from embodiment 1 in that:
1. aiming at the combined spunlace non-woven fabric for the water absorption surface layer of the personal hygiene care product, the upper surface of the first fiber layer is provided with a water repellent layer 17, and the water wetting grade is 2-3 grade; the water repellent agent of the water repellent layer is a fluoride-containing water repellent agent.
2. Aiming at the preparation method of the combined spunlace non-woven fabric, in the step 6), the water of the spunlaced material is removed, and the finished product is prepared after foam water repellent finishing, drying, mechanical punching and coiling.
Comparative example 1 (Using Single layer hydrophilic fiber)
A spunlace nonwoven fabric is formed by mutually intertwining 100% of cotton fibers; the mass per unit area is 40g/m2. The spunlaceA plurality of bulges and a plurality of through holes are distributed on the surface of the non-woven fabric; the opening area of the through hole on the surface is larger than that on the bottom surface.
The aperture ratio of the through hole is 35%; the bulges and the through holes are distributed in an alternative arrangement; the official moisture regain of the cotton fiber is 8.5%.
Comparative example 2 (first fiber layer surface without design projection)
A combined spunlace non-woven fabric consists of a first fiber layer and a second fiber layer which are overlapped and connected up and down; the first fiber layer is made of 20g/m2The cotton fiber of (2); the second fiber layer is 18g/m2Ultra-short polylactic acid fiber of 2g/m2The low-melting point ultra-short fiber; the fibers in the first fiber layer and the second fiber layer are mutually entangled; a plurality of through holes penetrating through the second fiber layer are distributed on the surface of the first fiber layer; the opening area of the through holes on the top surface of the first fiber layer is larger than that on the bottom surface of the second fiber layer.
The aperture ratio of the through hole is 35%; the official moisture regain of the cotton fiber is 8.5 percent; the official moisture regain of the ultrashort polylactic acid fiber is 0.5%; the length of the ultrashort polylactic acid fiber is 10 mm; the melting point of the low-melting-point super short fiber is 130 ℃. The unit area mass of the combined spunlace non-woven fabric is 40g/m2。
COMPARATIVE EXAMPLE 3 (through hole not designed)
A combined spunlace non-woven fabric consists of a first fiber layer and a second fiber layer which are overlapped and connected up and down; the first fiber layer is made of 20g/m2The cotton fiber of (2); the second fiber layer is 18g/m2Ultra-short polylactic acid fiber of 2g/m2The low-melting point ultra-short fiber; the fibers in the first fiber layer and the second fiber layer are mutually entangled; a plurality of bulges are distributed on the surface of the first fiber layer.
The official moisture regain of the hydrophilic fibers in the first fiber layer is 8.5%; the official moisture regain of the hydrophobic fibers in the second fiber layer is 0.5%; the length of the ultrashort polylactic acid fiber is 10 mm; melting of the low-melting-point ultra-short fiberThe point was 130 ℃. The unit area mass of the combined spunlace non-woven fabric is 40g/m2。
Material dry property test comparative evaluation:
the test purpose is as follows: the materials of example 1 and example 5 are respectively tested with the materials of comparative example 1, comparative example 2 and comparative example 3, and the dryness of each material is evaluated by testing the penetration and rewet data of the materials.
The test method comprises the following steps: refer to the relevant provisions of appendix A and appendix B in GB/T30133-2013 general technical Specification for sanitary towel facing.
Dryness test report
And (3) evaluation of test results:
1. the infiltration amount indicates the mass of the test sample absorbing solution, and a larger value indicates a better conductivity of the material. As can be seen from the above table, the material of example 1 has higher penetration indexes than those of comparative examples 1, 2 and 3 by 1.1g, 0.5g and 0.8g, respectively. While example 5 was 0.3g higher than example 1.
2. The back-seepage quantity shows the quality of liquid which is absorbed by the tested sample and then back-seeps on the filter paper, and the smaller the numerical value, the better the back-seepage performance of the material. As can be seen from the above table, the material of example 1 has permeability indexes 1.3g, 0.7g and 0.6g higher than those of comparative examples 1, 2 and 3, respectively. Example 5 was 0.5g higher than example 1.
Material wettability test comparative evaluation:
the test purpose is as follows: the materials of example 1 and example 5 are respectively tested with the materials of comparative example 1, comparative example 2 and comparative example 3, and the wetting diffusion performance of each material is compared and evaluated by testing the wetting size data of the materials.
The test method comprises the following steps:
1. preparation of test solution: adding deionized water into a beaker, adding the red pigment into the water, and uniformly stirring to prepare a test solution;
2. cutting the chemical qualitative analysis filter paper into a plurality of pieces with the size of 200mm x 150mm, and stacking 2 pieces of filter paper on a test bench;
3. cutting a material to be tested into a plurality of rectangular test samples according to the dimensions of 150mm in a Machine Direction (MD) and 100mm in a Cross Direction (CD);
4. stacking 3 test samples on 2 pieces of chemical qualitative analysis filter paper;
5. accurately moving 1ml of test solution to the upper part 2-3 cm away from the surface of the test sample by using a pipette, dripping the test solution on the test sample, and naturally standing for 5 minutes;
6. taking out the top one of the 3 test samples in the stack and placing the top one on a piece of white paper;
7. measuring the coloring size of the red liquid on the uppermost sample, and selecting the largest coloring size in the Machine Direction (MD) or the Cross Direction (CD), namely the wetting size of the sample;
8.5 specimens were measured for each sample, and the arithmetic mean of the measurements of the 5 specimens was taken as its final test result to the nearest 0.1 mm.
Wettability test report
And (3) evaluation of test results:
the wetting size represents the degree of wetting of the skin material after absorption of liquid, and a smaller value indicates better wetting properties. As can be seen from the table above, the wettability index of the material of example 1 is 49.1%, 22.8%, 35% higher than that of the materials of comparative example 1, comparative example 2, and comparative example 3, respectively. While example 5 is 12.28% higher than example 1.
Can know by the contrast of above-mentioned data, the embodiment of the utility model provides a for each proportion, the performance is better, has also proven simultaneously the utility model discloses the design of hydrophilic hydrophobic double-deck fibrous layer + arch + through-hole can play the synergism, lacks a technical characteristic wantonly and just can directly bring the reduction by a wide margin on the performance, on this basis, can further improve product performance at first fibrous layer surface design water repellent layer.
The raw materials and the equipment used in the utility model are common raw materials and equipment in the field if no special description is provided; the methods used in the present invention are conventional methods in the art unless otherwise specified.
The above, only be the utility model discloses a preferred embodiment, it is not right the utility model discloses do any restriction, all according to the utility model discloses the technical entity all still belongs to any simple modification, change and equivalent transformation of doing above embodiment the utility model discloses technical scheme's protection scope.
Claims (9)
1. A combined spunlace nonwoven fabric for a water absorption surface layer of a personal hygiene care product is characterized in that: comprises a first fiber layer (1) and a second fiber layer (2) which are overlapped and connected up and down; the first fiber layer contains hydrophilic fibers; the second fiber layer contains hydrophobic fibers; the fibers in the first fibrous layer are intertwined with the fibers in the second fibrous layer; a plurality of bulges (3) and a plurality of through holes (4) penetrating through the second fiber layer are distributed on the surface of the first fiber layer; the opening area of the through holes on the top surface of the first fiber layer is larger than that on the bottom surface of the second fiber layer.
2. The combined spunlace nonwoven fabric for the water-absorbing surface layer of personal hygiene care products of claim 1, wherein the open area ratio of the through holes on the combined spunlace nonwoven fabric is 8-45%.
3. A combined hydroentangled nonwoven for the absorbent surface layer of personal care products according to claim 1 or 2, characterized in that said protrusions and through holes are distributed in an alternating arrangement.
4. The combination hydroentangled nonwoven fabric for a water-absorbent topsheet of a personal care product according to claim 1, wherein the hydrophilic fibers in the first fibrous layer are vegetable fibers, regenerated cellulose fibers; the hydrophobic fibers in the second fibrous layer are synthetic fibers.
5. The combined spunlace nonwoven fabric for the water absorbing surface layer of personal hygiene care products as claimed in claim 1 or 4, wherein the hydrophobic fibers in the second fiber layer are ultra-short synthetic fibers with a length of 5-15 mm.
6. The combination hydroentangled nonwoven for use in an absorbent topsheet of a personal care product according to claim 1 or 4, wherein the second fibrous layer comprises low-melting-point ultra-short fibers; the melting point of the low-melting-point super short fiber is 105-140 ℃.
7. The combined spunlace nonwoven fabric for the water absorbing surface layer of personal hygiene care products as claimed in claim 1, wherein the upper surface of the first fiber layer is provided with a water repellent layer, and the water absorption grade is 2-3.
8. A combined hydroentangled nonwoven production device for producing a combined hydroentangled nonwoven according to any one of claims 1 to 7, characterized in that: the production device comprises the following components in sequence according to the material conveying direction: a forming net (5) which is conveyed in a circulating way, a stripping device (6), a suction device (7), a spunlace supporting net curtain (8) which is conveyed in a circulating way, a spunlace drum (9), a plurality of cloth guide rollers (10), a conveying curtain (11) and a dewatering device (12);
the forming net is obliquely arranged above the spunlace supporting net curtain; the stripping device is arranged at the bottom of the forming net; the pipetting device is arranged on the spunlace support screen; a pre-wetting roller (15) and a plurality of flat net spunlace heads (13) are sequentially arranged above the spunlace supporting screen along the conveying direction; the outer side of the circumferential surface of the spunlace circular drum is provided with a plurality of circular drum spunlace heads (14).
9. The production apparatus as claimed in claim 8, wherein said suction and transfer means is a suction and transfer roller provided with a vacuum suction port; the dehydration device is a vacuum suction device and is arranged below the conveying curtain; the specification of the spunlace web supporting curtain is 90-100 meshes.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113576765A (en) * | 2021-08-10 | 2021-11-02 | 中天（中国）工业有限公司 | Multilateral leak-proof sanitary towel and forming process thereof |
| CN114411332A (en) * | 2021-12-17 | 2022-04-29 | 盐城宠佳科技有限公司 | Preparation process of surface layer material for pet urinal pad |
| CN114606792A (en) * | 2021-12-20 | 2022-06-10 | 杭州诺邦无纺股份有限公司 | High-flexibility dry degradable nonwoven material and preparation method thereof |
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2019
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113576765A (en) * | 2021-08-10 | 2021-11-02 | 中天（中国）工业有限公司 | Multilateral leak-proof sanitary towel and forming process thereof |
| CN113576765B (en) * | 2021-08-10 | 2022-07-26 | 中天（中国）工业有限公司 | Multilateral leak-proof sanitary towel and forming method thereof |
| CN114411332A (en) * | 2021-12-17 | 2022-04-29 | 盐城宠佳科技有限公司 | Preparation process of surface layer material for pet urinal pad |
| CN114606792A (en) * | 2021-12-20 | 2022-06-10 | 杭州诺邦无纺股份有限公司 | High-flexibility dry degradable nonwoven material and preparation method thereof |
| CN114606792B (en) * | 2021-12-20 | 2022-12-30 | 杭州诺邦无纺股份有限公司 | High-flexibility dry degradable nonwoven material and preparation method thereof |
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