A kind of ultrasonically-modified hydrophilic nonwoven cloth and preparation method thereof
Technical field
The present invention relates to the technical field of non-woven fabrics, particularly relate to a kind of ultrasonically-modified hydrophilic nonwoven cloth and preparation method thereof.
Background technology
Non-weaving cloth, is also called non-woven fabrics, and it is that one directly utilizes high polymer section, short fiber or filament fiber to become net by air-flow or machinery, then through water thorn, and acupuncture, or hot rolling is reinforced, and eventually passes the cloth without braiding of Final finishing formation.Compared with traditional woven fabric, there is the features such as technological process is short, speed of production is fast, output is high, cost is low, purposes is wide.It is widely used in the fields such as health care, home decoration, auto industry, garment accessories.Along with the raising of people's living standard and the enhancing of awareness of safety, the anti-flammability of non-woven fabrics more and more becomes the focus of people's concern.
The synthetic fibers such as terylene, polyamide fibre, polypropylene (PP) are the most important raw materials of non-weaving cloth.The hydrophilic nonwoven cloth of fiber composite is a kind of fiber composite textile cloth of environmental protection, and it has stronger suction-operated to glassware for drinking water, thus has larger market prospects.In prior art, the hydrophilic nonwoven cloth pliability of fiber composite is lower, water absorption rate is less.
Summary of the invention
In view of this, one aspect of the present invention provides a kind of ultrasonically-modified hydrophilic nonwoven cloth, and this hydrophilic nonwoven cloth has higher pliability and larger water absorption rate.
A kind of ultrasonically-modified hydrophilic nonwoven cloth, comprise two cloth covers, what at least one cloth cover was provided with that multiple through-thickness caves in rolls a little, described in roll hole be that transverse and longitudinal is staggered, every four are rolled the cloth face portion that hole surrounds and form the fluffy body relatively rolling the fluffy material that hole is protruded.
Wherein, described in roll a little for circular, its degree of depth is 1.20 ~ 1.30mm.
Wherein, adjacent two roll a little between spacing equal, be 6.4 ~ 6.6mm.
Wherein, described fluffy body is the square of band annular angle.
Wherein, the length of side of fluffy body is 6.5mm.
Wherein, comprise the first hypothallus, the second hypothallus and the plurality of layers of double group short fiber layers be arranged between described first hypothallus and the second hypothallus and multilayer retaining fibrous matrix layers, every layer of two group short fiber layers and every layer of retaining fibrous matrix layers are in being alternately distributed.
The present invention provides a kind of preparation method of ultrasonically-modified hydrophilic nonwoven cloth on the other hand, and the non-weaving cloth obtained by this preparation method has higher pliability and larger water absorption rate.
Manufacture the method as above-mentioned ultrasonically-modified non-weaving cloth, comprise the following steps:
(1) by short fiber be the surface that many networkings shape is overlying on non-woven base cloth;
(2) hot rolling is carried out to be combined into cloth to the non-woven base cloth through step (1);
(3) ultrasonic wave Final finishing means are carried out to the non-woven base cloth through step (2), reach the hydrophilic softness of cloth matter.
Wherein, the mode of many networkings shape compound is become by short fiber to be that the hot rolling of roll Double-mold-head is shaped described in step (1).
Wherein, described in step (2), the widest door width of hot rolling is 3500MM.Pick-up can be chosen as 50 ~ 70%.Hot rolling is not only the inside of fibre stuff press-in non-woven base cloth and removing excess fiber slurry." pick-up " refers to remove the percentage that excess fiber slurry accounts for fibre stuff altogether.In the present invention, can be formed when the most important effect of hot rolling is Tu Ci mechanism (being similar to drift etc.) the extruding non-woven base cloth by equipment of hot rolling (such as hot roll) and roll hole.The temperature of hot rolling is 160 ~ 180 DEG C.
Ultrasonic wave Final finishing is ultrasonic bonding compound, refer to the high pressure, the high-frequency signal that supersonic generator are produced 20KHz (or 15KHz), pass through energy converting system, signal is converted to high-frequency mechanical vibration, be added on non-woven fabrics, by surface and the temperature of the soldering opening being delivered to multi-ply fibrous structure layer is raised, when temperature reaches the fusing point of this non-woven fabrics in intermolecular friction, non-woven fabrics is melted rapidly, adhesion, just reach and perfectly weld compound.The technology that ultrasonic bonding compound is well-known in the art, in the present invention, ultrasonic bonding compound does not rely on specific technological parameter, can be the selection of this area routine.
Hydrophilic nonwoven cloth of the present invention comprises two cloth covers, and what at least one cloth cover was provided with that multiple through-thickness caves in rolls hole, described in roll hole be that transverse and longitudinal is staggered, every four are rolled the cloth face portion that hole surrounds and form the fluffy body relatively rolling the fluffy material that hole is protruded.Fluffy body in the present invention can make its pliability comparatively prior art greatly improve, simultaneously water absorption rate also increases greatly.
Accompanying drawing explanation
Fig. 1 is the top view of the hydrophilic nonwoven cloth of present pre-ferred embodiments.
Fig. 2 is the structural representation of the hydrophilic nonwoven cloth of present pre-ferred embodiments.
In figure, 11-roll hole; 12-fluffy body; 21-the first hypothallus; 22-the second hypothallus; 23-bis-groups short fiber layers; 24-retaining fibrous matrix layers.
Detailed description of the invention
Technical scheme of the present invention is further illustrated by detailed description of the invention below in conjunction with accompanying drawing.
In describing the invention, it will be appreciated that, term " longitudinal direction ", " transverse direction ", " on ", D score, "front", "rear", "left", "right", " vertically ", " level ", " top ", " end " " interior ", the orientation of the instruction such as " outward " or position relationship be based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limitation of the present invention.
In the description of this description, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
In describing the invention, unless otherwise prescribed and limit, it should be noted that, term " installation ", " being connected ", " connection " should be interpreted broadly, such as, can be mechanical connection or electrical connection, also can be the connection of two element internals, can be directly be connected, also indirectly can be connected by intermediary, for the ordinary skill in the art, the concrete meaning of above-mentioned term can be understood as the case may be.
As shown in Figure 1, be the top view of the hydrophilic nonwoven cloth of present pre-ferred embodiments.Hydrophilic nonwoven cloth of the present invention, comprises two cloth covers.What one or two cloth cover was provided with that multiple through-thickness caves in roll a little 11.Roll a little 11 in transverse and longitudinal staggered, every four roll a little 11 cloth face portion surrounded formed relatively roll a little 11 protrusions fluffy bodies 12.
Roll a little 11 for circular, its degree of depth is 1.20 ~ 1.30mm.Adjacent two spacing of rolling a little between 11 are equal, are 6.4 ~ 6.6mm.Based on the shape of rolling a little 11, accordingly, fluffy body 12 is square for band annular angle, and the length of side of fluffy body 12 is 6.5mm.The fluffy material that fluffy material adopts is the material of quality softness, can be fluffy fiber, such as PP.What deserves to be explained is, " degree of depth " refers to and the distance on the thickness direction of non-weaving cloth here.
As shown in Figure 2, be the structural representation of the hydrophilic nonwoven cloth of present pre-ferred embodiments.Hydrophilic nonwoven cloth comprises the first hypothallus 21, second hypothallus 22 and the plurality of layers of double group short fiber layers 23 that is arranged between described first hypothallus 21 and the second hypothallus 22 and multilayer retaining fibrous matrix layers 24, and every layer of two group short fiber layers 23 and every layer of retaining fibrous matrix layers 24 are in being alternately distributed.
Introduce the method for above-mentioned hydrophilic nonwoven cloth below, comprise the following steps: fibre stuff is passed through roll coater roller coat in the surface of non-woven base cloth by (1), be specially: after the slurry of short fiber being poured into the size barrel with agitating device, non-woven base cloth is passed through in pressure roller and sizing roller, the slurry in stock tank is transferred to Ji Bushang through screen frame by sizing roller; (2) non-woven base cloth is carried out the hot rolling of roll Double-mold-head, the door width of hot rolling is 3500MM, and hot-rolled temperature is 160 ~ 180 DEG C, and it is 50 ~ 70% that pick-up controls; (3) to non-woven base cloth ultrasonic wave Final finishing means, the hydrophilic softness of cloth matter is reached.
The transverse curvature degree 13.4mm of hydrophilic nonwoven cloth of the present invention, rupture strong longitudinal 25.92N, horizontal 16.40N, elongation at break longitudinal 102.75%, laterally 124.73%; Pliability compares with common soft cloth and doubles; Water absorption rate improves >=670% (water absorption rate being greater than below prior art 30g is not less than 500%); Outward appearance is bright-coloured, comfortable, evenly; Surface detail can be changeable.
Although number range (size, technological parameter) involved in the present invention does not list concrete numerical value in the above-described embodiments, as long as but those skilled in the art can imagine any numerical value fallen in this number range above-mentioned completely all can implement the present invention, certainly also comprise any combination of occurrence in some number ranges.Herein, for the consideration of length, eliminate the embodiment providing occurrence in certain one or more number range, this should not be considered as the insufficient disclosure of technical scheme of the present invention.
Morely employ the term representing structure although above, such as, " roll a little ", " fluffy body ", " two groups of short fiber layers " and " retaining fibrous matrix layers " etc., do not get rid of the possibility of other term of use.These terms are used to be only used to describe and explain essence of the present invention more easily; The restriction that they are construed to any one additional is all contrary with spirit of the present invention.
Below know-why of the present invention is described in conjunction with specific embodiments.These describe just in order to explain principle of the present invention, and can not be interpreted as limiting the scope of the invention by any way.Based on explanation herein, those skilled in the art does not need to pay performing creative labour can associate other detailed description of the invention of the present invention, and these modes all will fall within protection scope of the present invention.