CN201770842U - Novel non-woven fabric - Google Patents

Abstract

The utility model discloses novel non-woven fabric which is flexible non-woven fabric formed by hot air; the surface comprises a plurality of hair fixing regions which are mutually connected, each hair fixing region consists of a flexible raised part and a depressed part arranged in a dot matrix, the depressed parts are arranged on the peripheries of the flexible raised parts, and the flexible raised parts are surrounded by the depressed parts arranged in the dot matrices; and the total area of the dot matrix depressed parts accounts for 5-25% of the total area of the non-woven fabric. The novel non-woven fabric takes the hot air non-woven fabric process as the basis and then carries out postprocessing and arrangement, and pattern shapes can be designed and replaced according to the requirements of customers and market demands, thereby greatly reducing hair feather on the surface of the hot air non-woven fabric, leading the non-woven fabric to have a concave-convex sense, further reducing the contact area between the surface layer material and a human body and increasing the comfortable feeling during the use by the human body.

Description

A kind of novel non-woven cloth

Technical field

The utility model relates to a kind of novel non-woven cloth, is specifically related to a kind of novel non-manufacturing cloth that is applied to the personal hygiene nursing materials.

Background technology

Thermal non-woven fabric is widely used in Ms's amenities and the baby diaper, usually be applied in top layer or two layers, it is absorb body fluids (menstruation discharge liquor, urine) rapidly, and it is imported the absorbent core of its lower floor as far as possible equably, like this, both keep skin dry and comfortable, prevented the lateral leakage of body fluid again.

The hot blast non-weaving cloth is a kind of in the thermal bonding technology, and it is because soft, fluffy, the user is felt comfortably cool and is widely used in the personal hygiene nursing materials.The hot blast non-weaving cloth adopts the bicomponent fiber of parallel construction or skin-core structure, through behind the carding, by the hot air composite fibre, after the PE fusion in the composite fibre, fiber overlaps mutually, forms to the non-weaving cloth of certain strength and extension property is arranged through supercooling.

Owing to be not subjected to pressurization in process, the elasticity of hot blast non-weaving cloth and bulkiness are better than the non-weaving cloth that other technologies are made far away.Yet the hot blast non-weaving cloth fluffs in the process that the ultimate consumer uses easily as the surfacing of personal hygiene nursing materials.This phenomenon is that the hot blast material is difficult to the problem of capturing and avoiding always.

The consumer is when using sanitary napkin or urine trousers, needed change once at least 2～3 hours, the athletic meeting of health makes between skin and the surface of sanitary material and rubs, and the soft fluffy of hot blast non-weaving cloth own, fixed fastness is not high, thereby the burr of staple fibre can stretch out under the effect of frictional force, makes surface of sanitary produce a large amount of filoplumes.Part consumer is because filoplume problem and allergy, and another part consumer thinks bad order, and burr can produce dislike.Thereby the fluffing of surfacing is one of main project of assessment of personal hygiene nursing materials and test.

At present, the post processing for the hot blast non-weaving cloth has been processed to form a lot of technologies in the world, characteristics is also arranged very much, as pressing, cotton ginning etc.But, aspect the flexibility after how keeping processing, often solve poorly.Through the hot blast cloth that plates, improved the fluffing problem really, but feel is stiff, can't use as surface layer.Through the hot blast cloth of cotton ginning, its technology and traditional hot rolling nonwovens process method are close, make the non-weaving cloth attenuation, and thickness can not meet the demands.

Tablet, fibre web or batts (do not comprise paper, woven fabric, tufteds, have the stitch bonded fabrics of stitching yarn and the felted terxture of wet method fulling milling) that the combination of the fiber that the term non-weaving cloth is meant orientation or random alignment in the literary composition by friction, obvolvent or bonding or these methods mutually combines and make.Used fiber can be natural fabric or chemical fibre; Can be staple fibre, long filament or the fibrous material that forms then and there.On macroscopic view, the manufacture craft process of non-weaving cloth generally can be divided into four processes: fiber is prepared; Become net; Reinforce; Back arrangement etc.Specifically, the processing technology of non-weaving cloth is divided into dry method, wet method and polymer and directly becomes three major types such as net method.Most widely used in the dry method is heat bonding moulding method, is divided into two kinds of hot rolling method and hot blast methods.

Hot rolling method non-weaving cloth is meant the thermoplasticity of utilizing synthetic fiber, makes fibre web be bonded into cloth by a pair of 130 ℃-150 ℃ high temperature roll through the high pressure hot melt of 2-50MPa.

Hot blast method non-weaving cloth be meant by temperature 130 ℃-140 ℃ hot-air penetrate evenly with the blast of 50-150Pa that fiber web makes bicomponent fiber partial melting with different melting points and adhesion-molded be non-weaving cloth.

The utility model content

The purpose of this utility model is the deficiency that exists at prior art, solve the existing hot blast non-weaving cloth problem of fluffing easily, a kind of geometry that makes the non-weaving cloth surface point, line, surface combination occur is provided, the moulding of cloth cover fiber structure bond is good, soft, thickness is up to standard and in use is difficult for producing the novel non-woven cloth of filoplume.

For realizing above-mentioned utility model purpose, the technical scheme that the utility model provides is:

A kind of novel non-woven cloth, described novel non-woven cloth is the flexible non-weaving cloth that hot blast is shaped, the surface of described non-weaving cloth is made up of a plurality of solid wool areas that are connected to each other, the depressed part of being arranged by flexible projection portion and dot matrix in described solid wool area is formed, described depressed part places the periphery of flexible projection portion, and the depressed part of arranging by dot matrix surrounds described flexible projection portion;

The gross area of described dot matrix depressed part accounts for 5～25% of the non-weaving cloth gross area.

The cup depth of the depressed part of described solid wool area is 0.2～2mm; The height of projection of the flexible projection portion of described solid wool area is 0.2～2mm.

Described solid wool area is shaped as a kind of or wherein combination of several shapes in triangle, quadrangle, pentagon, hexagon, pentalpha and the flower pattern.

The manufacture method of above-mentioned novel non-woven cloth, described non-weaving cloth enters the hot-rolling mill that has the texturing roller after being shaped through hot blast, high temperature squeezing action by the texturing roller on the described hot-rolling mill makes the surface of non-weaving cloth form the depressed part that plays the role of solid hair described non-weaving cloth extrusion modling;

The depressed part that described non-weaving cloth surface forms is corresponding with the protruding dot matrix that the texturing roller surface is carved with.

Described texturing roller comprises engraved roll and following engraved roll, and the protruding dot matrix that is used to form the non-weaving cloth surface depressions is carved with on the described engraved roll surface of going up.

The gross area of described protruding dot matrix account for the engraved roll external peripheral surface long-pending 5～25%.

The described heating-up temperature that goes up engraved roll is 100 ℃～150 ℃, and the extruding total pressure when described upward engraved roll and the extruding of following engraved roll is 2MPa～10MPa.

The preferred described heating-up temperature that goes up engraved roll is 120 ℃～150 ℃.

The scope that the temperature of described texturing roller is 120 ℃～150 ℃.

Be used for the equipment for producing novel non-woven cloth that said method is made, comprise hot blast non-weaving cloth production line, the output of described hot blast non-weaving cloth production line also is provided with the hot-rolling mill that has the texturing roller, described texturing roller comprises the last engraved roll of engagement, following engraved roll and the hydraulic means that is used to regulate relative distance between two engraved rolls, described two ends of going up engraved roll are installed on the bearing block on the hot-rolling mill fuselage, fixedly connected with hydraulic means by bearing block in following engraved roll both sides, the lifting of following engraved roll along with the lifting of hydraulic means, thereby reach the effect of relative distance between the engraved roll up and down of adjusting, the protruding dot matrix that is used to form the non-weaving cloth surface depressions is carved with on the described engraved roll surface of going up;

A described end of going up engraved roll and following engraved roll is provided with intermeshing transmission gear means, the described external heater of the other end of going up engraved roll.

Described heater comprises heater and the described heating oil pipe of going up engraved roll inside of access, and described heating oil pipe is connected with described heater, and described heating oil pipe is provided with temperature sensor.

Be provided with between described upward engraved roll and the following engraved roll and be used to keep engraved roll and the conforming micromatic setting of following engraved roll spacing.

Described micromatic setting is arranged on down on the bearing block of engraved roll one end, comprise the fixedly parallels that is fixed on the bearing block and the movable parallels that moves along fixing parallels mating surface, an end of described movable parallels by connecting rod be arranged on hot rolling fuselage release handle outward and link to each other.

One end of described fixedly parallels is provided with an inclined-plane, and an end of described movable parallels is provided with along the inclined-plane of described fixedly parallels one end and cooperates the cooperation inclined-plane that moves, and described connecting rod is fixed in the other end of movable parallels.

The described engraved roll of going up adopts stainless steel to make, and described engraved roll down adopts the cotton pulp material, forms through the high pressure compacting, and shore hardness is between 60～95HD.

The utlity model has following advantage:

Non-weaving cloth of the present utility model adopts the secondary hot rolling effect of hot-rolling mill, make the non-weaving cloth surface form a plurality of solid wool areas that are connected to each other, the depressed part of being arranged by flexible projection portion and dot matrix in described solid wool area is formed, described depressed part places the periphery of flexible projection portion, and the depressed part of arranging by dot matrix surrounds described flexible projection portion; Described depressed part can be used for the end of the staple fibre of fixing described non-weaving cloth, forms burr when being rubbed with the end that prevents described staple fibre.Because the gross area of dot matrix depressed part accounts for 5～25% of the non-weaving cloth gross area, the fiber of the flexible projection portion of solid wool area is fixed by depressed part, thereby has significantly reduced the formation of the filoplume on non-weaving cloth surface.Depressed part has also increased the degree of consolidation on non-weaving cloth surface.

The arrangement mode of novel non-woven cloth dot matrix projection of the present utility model can design difformity according to client and market demand, thereby produces variform solid wool area, to satisfy different needs.The utility model makes non-weaving cloth have concave-convex sense, thereby the contact area of surface material and human body is reduced, and has increased human body comfort in use.

Description of drawings

Fig. 1 illustrates the vertical view of the utility model novel non-woven cloth;

Fig. 2 illustrates the relative position schematic diagram of texturing roller;

Fig. 3 illustrates the schematic diagram of the utility model equipment for producing novel non-woven cloth;

Fig. 4 illustrates the structural representation of hot-rolling mill;

Fig. 5 is the I portion structural representation among Fig. 4.

The specific embodiment

Below in conjunction with accompanying drawing the specific embodiment of the present utility model is described in detail.

Novel non-woven cloth 1 of the present utility model illustrates with planar development in Fig. 1.This flower type is only as an example in the novel texturing non-weaving cloth.In the formal production process, can produce the texturing nonwoven fabric of different appearance effect according to design.In Fig. 1,2 indication equipment traffic directions.The utility model non-weaving cloth is made up of the hot blast non-weaving cloth of orientation on equipment traffic direction 2.Non-weaving cloth 1 forms the solid wool area of two different patterns respectively at equipment traffic direction 2, promptly the depressed part 3a that is arranged by 3b of flexible projection portion and dot matrix forms, described depressed part 3a places the periphery of the 3b of flexible projection portion, and by the depressed part 3a that dot matrix is arranged the described flexible projection 3b of portion is surrounded, depressed part 3a and the 3b of flexible projection portion form orthohexagonal solid wool area; Be nested in the flower pattern solid wool area that forms in the regular hexagon by depressed part 4a and the 4b of flexible projection portion.If go respectively to see by tow sides, then from the front, the front ridge forms a convex surface, forms uneven surface with depression position, front, and corresponding sees from the negative, and swell to reverse side at positive depression position, forms local convex surface.

The gross area of dot matrix depressed part 3a and depressed part 4a is different according to flower shape and pattern, totally accounts for 5～25% of non-weaving cloth 1 gross area.

The cup depth of depressed part 3a and depressed part 4a can be chosen between 0.2～2mm; The height of projection of lug boss 3b can be chosen between 0.2～2mm.

A kind of manufacture method of novel non-woven cloth, non-weaving cloth enters the hot-rolling mill that has the texturing roller after being shaped through hot blast, high temperature squeezing action by the texturing roller on the hot-rolling mill makes the surface of non-weaving cloth form the depressed part that plays the role of solid hair the non-weaving cloth extrusion modling.The lip-deep depressed part that plays the role of solid hair of non-weaving cloth is to form by the protruding dot matrix extruding non-weaving cloth on the last engraved roll.

Provide several concrete enforcement the utility model to make the method for non-weaving cloth below:

Method embodiment 1: the hot blast of non-weaving cloth is shaped, promptly the fibre web that on the equipment traffic direction, is orientated by air-heater 120 ℃ of temperature, typing first under the blast 2000Pa condition, the non-weaving cloth that hot blast is shaped is by having the hot-rolling mill of texturing roller then, temperature by the texturing roller is at 150 ℃, roller width of cloth total pressure is handled the non-weaving cloth that forms in the utility model under the 10MPa condition, following engraved roll is 95HD in hardness.

Method embodiment 2: the hot blast of non-weaving cloth is shaped, promptly the fibre web that on the equipment traffic direction, is orientated by air-heater 140 ℃ of temperature, typing first under the blast 500Pa condition, the non-weaving cloth that hot blast is shaped is by having the hot-rolling mill of texturing roller then, temperature by the texturing roller is at 100 ℃, roller width of cloth total pressure is handled the non-weaving cloth that forms in the utility model under the 2MPa condition, following engraved roll is 60HD in hardness.

Method embodiment 3: the hot blast of non-weaving cloth is shaped, promptly the fibre web that on the equipment traffic direction, is orientated by air-heater 130 ℃ of temperature, typing first under the blast 1000Pa condition, the non-weaving cloth that hot blast is shaped is by having the hot-rolling mill of texturing roller then, temperature by the texturing roller is at 130 ℃, roller width of cloth total pressure is handled the non-weaving cloth that forms in the utility model under the 5MPa condition, following engraved roll is 70HD in hardness.

Method embodiment 4: the hot blast of non-weaving cloth is shaped, promptly the fibre web that on the equipment traffic direction, is orientated by air-heater 135 ℃ of temperature, typing first under the blast 1250Pa condition, the non-weaving cloth that hot blast is shaped is by having the hot-rolling mill of texturing roller then, temperature by the texturing roller is at 140 ℃, roller width of cloth total pressure is handled the non-weaving cloth that forms in the utility model under the 6MPa condition, following engraved roll is 80HD in hardness.

Method embodiment 5: the hot blast of non-weaving cloth is shaped, promptly the fibre web that on the equipment traffic direction, is orientated by air-heater 130 ℃ of temperature, typing first under the blast 1500Pa condition, the non-weaving cloth that hot blast is shaped is by having the hot-rolling mill of texturing roller then, temperature by the texturing roller is at 120 ℃, roller width of cloth total pressure is handled the non-weaving cloth that forms in the utility model under the 4MPa condition, following engraved roll is 90HD in hardness.

The fiber that constitutes in the utility model is formed by fluffy, soft 1.7～3.3dtex two-component staple fiber heat bonding, verified, instantly engraved roll is when hardness is about 60HD～95HD, the flexibility of texturing product and decorative pattern definition just can obtain basic guarantee, and preferably hardness is chosen between 70HD～90HD.

The equipment that said method uses is shown in Fig. 4,5, and its outward appearance is consistent with the hot-rolling mill in the industry, the device with heat-conducting oil heating.Comprise hot blast non-weaving cloth production line, the output of hot blast non-weaving cloth production line also is provided with the hot-rolling mill with texturing roller, the texturing roller comprises engraved roll 19 and following engraved roll 20, last engraved roll is fixed on the fuselage of hot-rolling mill by bearing and bearing block 191, following engraved roll 20 is by bearing and bearing block 201 and 21 fastening linking to each other of hydraulic means, the synchronization lifting along with the pressure variation lifting of hydraulic means 21, thus the relative distance between the engraved roll up and down adjusted.Last engraved roll 19 adopts stainless steel to make, the steel rider body is silvery white in color, the protruding dot matrix that is used to form the non-weaving cloth surface depressions is carved with on the surface, and hydraulic means 21 can be used for controlling down moving of engraved roll 20, realizes regulating the relative distance that goes up between engraved roll 19 and the following engraved roll 20; Last engraved roll 19 and following engraved roll 20 are realized transmission, the external heater 22 of the opposite side of last engraved roll 19 by the transmission gear means 23 of a side.Heater 22 comprises heater 25 and inserts the heating oil pipe 24 of going up engraved roll 19 inside, heating oil pipe 24 is connected with described heater 25, heating oil pipe 24 is provided with temperature sensor 26, can carry out adjustment by temperature sensor 26 according to the condition of production.

Be provided with micromatic setting 27 between last engraved roll 19 and the following engraved roll 20, micromatic setting 27 is arranged on the bearing block 201, comprise that an end has the fixedly parallels 271 on the engraved roll end axis bearing 201 under being installed on inclined-plane, another has and cooperates the movable parallels 272 that moves with the inclined-plane, and the other end of movable parallels 272 links to each other by connecting rod 273 release handle 274 outer with being arranged on the hot rolling fuselage.During adjusting, by rotation release handle 274, make connecting rod 273 drive activity parallels 272 move horizontally with respect to fixing parallels 271, because fixedly parallels 271 and 272 end faces are the inclined-plane, thereby the horizontal displacement of movable parallels 272 is converted into the fixedly upper and lower displacement of parallels 271, reach the fine adjustment function, to keep the uniformity of engraved roll spacing up and down.

Following engraved roll adopts the cotton pulp material through the high pressure compacting, and shore hardness is between 60～95HD, and preferred hardness is between 70～90HD.Be characterized in: the product concave-convex sense of making is clearly demarcated, and stereoeffect is good, and lower roll does not need heating.

Last engraved roll 19 and following engraved roll 20 are meshing with each other by the texturing roller of two unlike materials and form, make the non-weaving cloth can be from being guided through the moulding of texturing roller between them, by the gears engaged Synchronous Transmission, the texturing device becomes clocklike lug boss and depressed part with the fiber draw of non-weaving cloth between the texturing roller.

Fig. 2 illustrates the relative position schematic diagram of texturing roller.ST1 represents that engraved roll is in relative relaxed state with following engraved roll, and D11 and D21 are respectively the diameter of engraved roll up and down, and S11 and S21 are respectively the diameter of engraved roll two ends power transmission shaft bearing up and down.ST2 represents to carry out the state that the texturing non-weaving cloth is produced when the hot blast non-weaving cloth through texturing roller zone.The diameter D12 of engraved roll and the D22 effect of being stressed is meshed overlapping up and down.Control the pressure load that is carried on the engraved roll by hydraulic means 21, make engraved roll generation engagement up and down, the setting pressure of hydraulic means is depended in depth of engagement interval.The processability of hot blast non-weaving cloth formation texturing non-weaving cloth depends on the depth of engagement and the engaging pressure between the engraved roll.But because usually the colored type after the moulding of cold conditions situation is not easy typing under the effect of tensile stress, the texturing non-weaving cloth is finalized the design therefore also need for the certain temperature of engraved roll, typical temperature is at 100 ℃～150 ℃, preferably 120 ℃～150 ℃ scope.

On structural design, the roll surface of engraved roll is designed to well-regulated lattice-like regular hexagon, and regular hexagon is continuous grain pattern, and embeds the flower pattern in the above.The roll surface salient point suppresses concave point on the hot blast non-weaving cloth, during the non-protuberance of roll surface position contact hot blast non-weaving cloth, with the filoplume pressing on non-weaving cloth surface.The hot blast non-weaving cloth surface that suppresses concave point has and the identical design in engraved roll surface.Owing to the fluffy softness of hot blast non-weaving cloth, after compacting, concave-convex sense appears in cloth cover simultaneously, not outwards swelled slightly by the part of hot pressing.

Fig. 3 illustrates the schematic diagram of equipment for producing novel non-woven cloth, also shown production procedure of the present utility model, nonwoven web 7 by bicomponent staple fiber combing moulding enters air-heater blast shaping roller 8 through the conveyer belt 5 that driven roller 6 drives, and form on roller 8 that bonding trend strengthens gradually arrange net 9, arrange net and 9 from the drive 10 of roller 8 output points the time, fully be bonded into hot blast non-weaving cloth 11, non-weaving cloth 11 is through transmission guide wheel 12,13 and 14 enter the texturing interval, and the pressure forming of engraved roll 15 and following engraved roll 16 and HEAT SETTING double action form texturing non-weaving cloth 17 and export through output guide wheel 18 on the process.

This texturing device can be worked under the Breadth Maximum of about 1600mm, because the texturing device is in line states with respect to the hot blast production line, the relative once hot blast non-weaving cloth of typing of hot blast non-weaving cloth that enters the texturing interval has more soft fluffy and powerful higher performance, and also keeping 40～60 ℃ bonding residuals temperatures before entering the texturing interval, after the texturing moulding, the powerful index that its intensity is strengthened and satisfies the demand, and its fluffy performance is better.

Engraved roll 20 down of the present utility model can adopt materials such as rubber, wood pulp, cotton pulp and animal fur; present embodiment only is illustrated the cotton pulp material; the following engraved roll of other material all belongs to conventional equivalent variations for those of ordinary skills, drops on equally within the protection domain of the present utility model.

The utility model also can have other variation; as well known to the skilled person; the foregoing description only plays the exemplary role in the above-mentioned utility model protection scope; for those of ordinary skills; also have a lot of conventional distortion and other embodiment in the protection domain that the utility model limited, these distortion and embodiment will be within the protection domains that the utility model awaits the reply.

Claims (3)

1. novel non-woven cloth, described novel non-woven cloth are the non-weaving cloth (1) that hot blast is shaped, and it is characterized in that:

The surface of described non-weaving cloth (1) is made up of the solid wool area that is connected to each other, the depressed part of being arranged by flexible projection portion and dot matrix in described solid wool area is formed, described depressed part places the periphery of flexible projection portion, and the depressed part of arranging by dot matrix surrounds described flexible projection portion;

The gross area of described dot matrix depressed part accounts for 5～25% of non-weaving cloth (1) gross area.

2. a kind of novel non-woven cloth according to claim 1 is characterized in that:

The cup depth of the depressed part of described solid wool area is 0.2～2mm; The height of projection of the flexible projection portion of described solid wool area is 0.2～2mm.

3. a kind of novel non-woven cloth according to claim 1 is characterized in that:

Described solid wool area is shaped as a kind of or wherein combination of several shapes in triangle, quadrangle, pentagon, hexagon, pentalpha and the flower pattern.

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