CN116570432A

CN116570432A - Novel quick-drying absorbent core

Info

Publication number: CN116570432A
Application number: CN202310528017.3A
Authority: CN
Inventors: 陈汉河
Original assignee: Mega Soft China Co ltd
Current assignee: Mega Soft China Co ltd
Priority date: 2023-05-11
Filing date: 2023-05-11
Publication date: 2023-08-11

Abstract

The application relates to the field of disposable sanitary products, and provides a novel quick-drying absorbent core, which mainly solves the problem of low absorption speed of the absorbent core in the prior art.

Description

Novel quick-drying absorbent core

Technical Field

The application relates to the field of disposable sanitary products, in particular to a novel quick-drying absorbent core.

Background

The inventor applies for a patent application number 202211056278.1 in the year 08 and 30, and the patent name is a quick-drying absorbent core, which in detail discloses an absorbent core body, the absorbent core body is defined to extend along the length direction of the absorbent core body to be longitudinal direction, and extend along the width direction of the absorbent core body to be transverse direction, the absorbent core body comprises an upper layer non-woven fabric, a bulk non-woven fabric and a lower layer non-woven fabric, the upper surface and the lower surface of the bulk non-woven fabric are respectively provided with a high polymer water-absorbing resin material, the high polymer water-absorbing resin material is partially embedded in pores of the bulk non-woven fabric, the density of the high polymer water-absorbing resin material on the bulk non-woven fabric is reduced in a step shape from the longitudinal middle part to the longitudinal two ends of the bulk non-woven fabric, the upper layer non-woven fabric is compounded on the upper surface of the bulk non-woven fabric through sizing, the lower non-woven fabric is compounded on the lower surface of the bulk non-woven fabric through sizing, the transverse width dimension of the lower non-woven fabric is 8-25 mm larger than that of the bulk non-woven fabric, the transverse two sides of the lower non-woven fabric are folded upwards and inwards to be attached to the upper surface of the upper non-woven fabric and fixedly connected with the upper non-woven fabric and the bulk non-woven fabric through hot press or ultrasonic welding, the longitudinal two ends of the upper non-woven fabric are fixedly connected with the bulk non-woven fabric and the lower non-woven fabric through hot press or ultrasonic welding, the longitudinal middle part of the absorbent core body is pressed with two diversion trenches, the two diversion trenches are distributed side by side along the longitudinal direction, the longitudinal middle part of each diversion trench is fixedly connected with the upper non-woven fabric, the bulk non-woven fabric and the lower non-woven fabric through hot press or ultrasonic welding, the water absorption capacity of the absorbent core body is increased stepwise from one longitudinal end to the other longitudinal end and then reduced stepwise. The high-molecular water-absorbing resin materials are periodically added on the upper surface and the lower surface of the bulk non-woven fabric, so that the water absorption capacity of the prepared absorbent core body is increased stepwise from one longitudinal end to the other longitudinal end and then reduced stepwise, namely, the high-molecular water-absorbing resin content on two longitudinal sides of the absorbent core body is reduced, further, the cost is reduced, the high-molecular water-absorbing resin materials are partially embedded in the pores of the bulk non-woven fabric to be limited and fixed in the transmission shaking of the bulk non-woven fabric, meanwhile, the distribution characteristic of the high-molecular water-absorbing resin material content in the single absorbent core body is maintained, the high-molecular water-absorbing resin materials are intensively distributed in the longitudinal middle area of the absorbent core body, the preferential absorption effect is realized, the production cost is reduced while the absorption efficiency is improved, and the quick absorption effect is realized.

However, in actual use, it was found that after the user wears the diaper or pull-up diaper manufactured from the absorbent core, the urine input area of the user is located between the two guide grooves, and when urine is input, urine permeated from the upper nonwoven fabric is preferentially absorbed by the polymer water absorbent resin material in the area and swells, thereby squeezing the space, causing the urine conduction speed to be slowed down, and when the urine is conducted to the guide grooves, the urine is isolated from conduction due to the welding seam of the guide grooves, and only the conduction in the longitudinal direction of the absorbent core can be conducted; urine which is not permeated by the upper non-woven fabric flows into the diversion trench on the surface of the upper non-woven fabric and is diverted by the diversion trench, thereby influencing the absorption speed of the absorption core body, and the urine is tested in the current paper diaper national standard, for example, the test method used in the national standard of the people's republic of China GB/T28004.1-2021 or the national standard of the people's republic of China GB/T28004.2-2021, and the test result is not ideal.

Disclosure of Invention

Therefore, the application provides a novel quick-drying absorbent core body aiming at the problems, which mainly solves the problem of low absorption speed of the absorbent core body in the prior art.

In order to achieve the above purpose, the present application adopts the following technical scheme:

the utility model provides a novel quick-drying absorbent core that absorbs, includes the absorbent core body, and the definition extends to longitudinal direction along the length direction of absorbent core body, extends to transverse direction along its width direction, the absorbent core includes upper non-woven fabrics, the bulk non-woven fabrics, lower floor's non-woven fabrics, be equipped with first polymer water absorbent resin material between upper non-woven fabrics and the bulk non-woven fabrics, be equipped with second polymer water absorbent resin material between lower floor's non-woven fabrics and the bulk non-woven fabrics, upper non-woven fabrics is compounded in the upper surface of bulk non-woven fabrics through the sizing, lower floor's non-woven fabrics is compounded in the lower surface of bulk non-woven fabrics through the sizing, the transverse width dimension of lower floor's non-woven fabrics is 8mm ~ 25mm than the transverse width dimension of bulk non-woven fabrics, the transverse both sides of lower floor's non-woven fabrics upwards inwards fold and attach in the upper surface of upper non-woven fabrics to through thermocompression bonding or ultrasonic bonding and upper non-woven fabrics, the longitudinal both ends of upper non-woven fabrics pass through thermocompression bonding or ultrasonic bonding and bulk non-woven fabrics, lower floor non-woven fabrics fixed connection, the horizontal middle part of absorbent core body has a guiding groove, vertical guiding groove that is compounded in the upper portion, vertical guiding groove that is located in the upper portion, vertical portion V-shaped structure, vertical portion and V-shaped section, and vertical portion are located the vertical portion, and the vertical portion are located the vertical portion.

Further, the welding points in the diversion trenches are distributed in a row shape and are distributed along the length direction of the diversion trenches, the number of the welding points in the longitudinal diversion portion is three, and the number of the welding points in the diversion portion is two.

Further, three rows of welding points in the longitudinal flow guiding part are defined to be a first row of sewing units, a second sewing unit and a third sewing unit in sequence along the transverse distribution, and the welding points in the second sewing unit are staggered with the welding points in the first sewing unit and the third sewing unit.

Further, the welding points of the first sewing unit and the third sewing unit are fixedly connected with the upper non-woven fabric and the bulked non-woven fabric, and the welding points of the second sewing unit are fixedly connected with the upper non-woven fabric, the bulked non-woven fabric and the lower non-woven fabric.

Further, the first high molecular water-absorbing resin material is adhered to the lower surface of the upper layer non-woven fabric, and the second high molecular water-absorbing resin material is adhered to the upper surface of the lower layer non-woven fabric.

Furthermore, the welding point is of an O-shaped structure.

Further, the ratio of the transverse width dimension of the welding area to the transverse width dimension of the diversion trench is 3-4:6.

Further, the transverse width of the welding area is 6mm, and the transverse width of the diversion trench is 11mm.

Further, the ratio of the longitudinal length dimension of the diversion trench to the longitudinal length dimension of the absorbent core body is 0.6-0.8:1.

Further, the water absorption capacity of the absorbent core body is reduced in a step shape from the longitudinal middle part to the longitudinal two ends.

By adopting the technical scheme, the application has the beneficial effects that: the novel quick-drying absorbent core body is characterized in that the transverse middle part of the absorbent core body is provided with the diversion trench, so that urine of a user is input to the diversion trench, as the diversion trench is made of the high polymer water absorbent resin material, and the welding points are welded by ultrasonic waves for fixing the upper non-woven fabric, the bulked non-woven fabric and the lower non-woven fabric, the urine in the diversion trench is preferentially diffused and guided along the longitudinal direction of the diversion trench, the redundant urine overflows from the side surface of the diversion trench, the first high polymer water absorbent resin material and the second high polymer water absorbent resin material absorb the urine, moreover, the urine in the diversion trench is exuded outwards from the side wall of the diversion trench and absorbed by the first high polymer water absorbent resin material and the second high polymer water absorbent resin material at the periphery of the diversion trench, so that the urine can be preferentially guided, the diffusion range of the urine is improved, and the absorption speed is further improved, in addition, the diversion trench comprises a longitudinal diversion part with an I-shaped structure and a diversion part with a V-shaped structure arranged at the two longitudinal ends of the longitudinal diversion part, under the condition that urine is diverted to the tail end, the quantity of the diversion part is relatively small, a small quantity of urine can be diverted through the arrangement of the diversion part, the expansion thickness of the absorption core body in the area is balanced, the area can be relatively attached to the crotch of a user, the comfort of use is improved, meanwhile, the ratio of the transverse width dimension of a welding area to the transverse width dimension of the diversion trench is 3-4:6, on one hand, diversion and urine infiltration of the side face of the auxiliary diversion trench can be realized through the non-formed welding area, and because the area is compounded through glue spraying, under the condition that the absorption quantity is overlarge, the non-welding area is expanded, the expansion buffer space is realized, and the absorption quantity of urine is further improved, avoiding the side leakage.

Drawings

FIG. 1 is a schematic top view of an embodiment of the present application;

fig. 2 is a schematic perspective view of a flow guiding state of a longitudinal flow guiding portion according to an embodiment of the present application;

FIG. 3 is a schematic cross-sectional view of the structure at A-A in FIG. 1;

FIG. 4 is a process flow diagram of an absorbent core body in an embodiment of the present application;

FIG. 5 is a schematic perspective view of a welding mechanism according to an embodiment of the present application;

FIG. 6 is a schematic elevational view of a welding mechanism in accordance with an embodiment of the application;

FIG. 7 is a right side view of a welding mechanism according to an embodiment of the present application;

FIG. 8 is a schematic elevational view of another welding mechanism in accordance with an embodiment of the application;

fig. 9 is a schematic cross-sectional structure of a backup roll in an embodiment of the present application.

Detailed Description

The application will now be further described with reference to the drawings and detailed description.

The embodiment of the application comprises the following steps:

referring to fig. 1 and 3, a novel quick-drying absorbent core comprises an absorbent core body 600, which is defined to extend along the length direction of the absorbent core body 600 to be longitudinal direction and extend along the width direction to be transverse direction, the absorbent core 600 comprises an upper layer nonwoven fabric 610, a bulk nonwoven fabric 620 and a lower layer nonwoven fabric 630, a first high molecular water-absorbing resin material 640 is arranged between the upper layer nonwoven fabric 610 and the bulk nonwoven fabric 620, a second high molecular water-absorbing resin material 650 is arranged between the lower layer nonwoven fabric 630 and the bulk nonwoven fabric 620, the upper layer nonwoven fabric 610 is compounded on the upper surface of the bulk nonwoven fabric 620 by sizing, the lower layer nonwoven fabric 630 is compounded on the lower surface of the bulk nonwoven fabric 620 by sizing, the transverse width dimension of the lower layer nonwoven fabric 630 is 8 mm-25 mm larger than the transverse width dimension of the bulk nonwoven fabric 620, preferably 16mm, the two lateral sides of the lower non-woven fabric 630 are folded upwards and inwards to be attached to the upper surface of the upper non-woven fabric 610 and fixedly connected with the upper non-woven fabric 610 and the bulked non-woven fabric 620 through hot press or ultrasonic welding, the two longitudinal ends of the upper non-woven fabric 610 are fixedly connected with the bulked non-woven fabric 620 and the lower non-woven fabric 630 through hot press or ultrasonic welding, the lateral middle part of the absorbent core body 600 is pressed with a diversion trench 660, the diversion trench 660 is distributed along the longitudinal direction, the diversion trench 660 comprises a longitudinal diversion portion 661 and a diversion portion 662 arranged at the two longitudinal ends of the longitudinal diversion portion 661, the longitudinal diversion portion 661 is of a 'I' -shaped structure, the diversion portion 662 is of a 'V' -shaped structure, the bottom of the diversion trench 660 is provided with a welding point 670 through ultrasonic welding, the area where the welding point is distributed is a welding area 700, the ratio of the transverse width dimension of the welding area 700 to the transverse width dimension of the diversion trench 660 is 3-4:6, specifically 6:11, that is, the transverse width dimension of the welding area 700 is 6mm, the transverse width dimension of the diversion trench 660 is 11mm, the ratio of the longitudinal length dimension of the diversion trench 660 to the longitudinal length dimension of the absorbent core body 600 is 0.6-0.8:1, preferably, the ratio is 0.75:1.

The novel quick-drying absorbent core is characterized in that the transverse middle part of the absorbent core body 600 is provided with the diversion trench 660, so that urine of a user is input into the diversion trench 660, as the diversion trench 660 is not scattered with high polymer water absorbent resin materials, and the welding point 670 is welded by ultrasonic waves for fixing the upper layer non-woven fabric 610, the bulked non-woven fabric 620 and the lower layer non-woven fabric 630, the urine in the diversion trench 660 is preferentially diffused and guided along the longitudinal direction of the diversion trench 660, the redundant urine overflows from the side surface of the diversion trench 660, the first high polymer water absorbent resin materials 640 and the second high polymer water absorbent resin materials 650 are absorbed, moreover, the urine in the diversion trench 660 is exuded outwards from the side wall of the diversion trench 660 and is absorbed by the first high polymer water absorbent resin materials 640 and the second high polymer water absorbent resin materials 650 at the periphery side of the diversion trench, so that the urine can be preferentially guided, the spreading range of the urine is increased, the absorption speed is further increased, the diversion trench 660 comprises a longitudinal diversion part 661 with an I-shaped structure and a diversion part 662 with a V-shaped structure which is arranged at the two longitudinal ends of the longitudinal diversion part 661, under the condition that urine is diverted to the tail end, the urine quantity is relatively smaller, a small quantity of urine can be diverted through the arrangement of the diversion part 662, the expansion thickness of the absorbent core body of the area is balanced, the area can be relatively attached to the crotch of a user, the comfort of use is improved, meanwhile, the ratio of the transverse width dimension of the welding area 700 to the transverse width dimension of the diversion trench 660 is 3-4:6, on one hand, diversion can be realized through the welding area 700 which is not formed and urine on the side face of the auxiliary diversion trench 660 is oozed out, and because the area is compounded through glue spraying, under the condition that the absorption quantity is overlarge, the welding area is expanded, realize inflation buffer space, and then improve the absorption capacity of urine, avoid the condition of side leakage.

In this embodiment, referring to fig. 2, the welding points 670 in the diversion trench 660 are distributed in rows, and are arranged along the length direction of the diversion trench 660, the welding points 670 in the longitudinal diversion portion 661 are three rows, the welding points 670 in the diversion portion 662 are two rows, the three rows of welding points 670 in the longitudinal diversion portion 661 are defined to be a first row of stitching units 670a, a second stitching unit 670b and a third stitching unit 670c in sequence along the transverse direction, the welding points 670 in the second stitching unit 670b are staggered with the welding points 670 in the first stitching unit 670a and the third stitching unit 670c, the welding points 670 of the first stitching unit 670a and the third stitching unit 670c fixedly connect the upper layer nonwoven fabric 610 and the bulk nonwoven fabric 620, the welding points 670 of the second stitching unit 67b fixedly connect the upper layer nonwoven fabric 610, the bulk nonwoven fabric 620 and the lower layer 630, the welding points 670 are in an 'O' -shaped structure, so that when the welding points 670 realize the fixation of the upper non-woven fabric 610, the bulk non-woven fabric 620 and the lower non-woven fabric 630, urine can be infiltrated out through gaps between the welding points 670 to accelerate diffusion, the upper non-woven fabric 610 and the bulk non-woven fabric 620 are fixedly connected by the welding points 670 of the first stitching unit 670a and the third stitching unit 67c, the upper non-woven fabric 610, the bulk non-woven fabric 620 and the lower non-woven fabric 630 are fixedly connected by the welding points 670 of the second stitching unit 670b, the depths of the welding points 670 on the second stitching unit 670b and the welding points 670 on the first stitching unit 670a and the third stitching unit 670c are different, stepped distribution is realized, the difference in the extruded degree of the bulk non-woven fabric 620 is utilized, and in the urine infiltration process, the extruded depth of the bulk non-woven fabric 620 is different, the layered extravasation of urine is realized, and the first and second high molecular water-absorbent resin materials 640 and 650 are prevented from obstructing the subsequent diversion effect under the condition of absorption expansion, thereby improving the absorption speed of the absorbent core body 600.

In addition, referring to fig. 3, the first polymer absorbent resin material 640 is adhered to the lower surface of the upper non-woven fabric 610, the second polymer absorbent resin material 650 is adhered to the upper surface of the lower non-woven fabric 630, when the preparation is performed, the lower surface of the upper non-woven fabric 610 is firstly sized, then the first polymer absorbent resin material 640 is spread on the lower surface of the upper non-woven fabric 610, and gaps exist, so that the upper non-woven fabric 610 and the bulk non-woven fabric 620 can be pre-adhered, on one hand, the first polymer absorbent resin material 640 can be fixed to prevent the first polymer absorbent resin material 640 from deviating, and then the ultrasonic welding is performed, and the preparation mode of the lower non-woven fabric 630 and the second polymer absorbent resin material 650 is performed simultaneously, so that when the first polymer absorbent resin material 640 and the second polymer absorbent resin material 650 expand once for absorbing urine, the expansion is adhered to the upper non-woven fabric 610 and the lower non-woven fabric 630, and the bulk non-woven fabric 620 are extruded in opposite directions, so that a sufficient expansion space can be increased, the raised high polymer absorbent resin material can be saturated and absorbed water, and the middle part of the bulk non-woven fabric 620 can be provided with gaps, on the periphery side of the first polymer absorbent resin material 640 and the second absorbent resin material can be raised in the absorption rate of the second polymer absorbent resin material, and the second absorbent resin material can be increased once, and the speed of the urine can be increased when the second absorbent resin material is expanded.

Under the condition of through grooves, when a diaper or a pull-up diaper made of the absorbent core body 600 is worn, the middle part of the absorbent core body is in a sagging state generally due to the action of gravity, particularly after primary absorption, the diversion part 662 which is in a V-shaped structure on the diversion groove 660 is used for leading urine to the area, so that the expansion is uniform, the comfort is improved, and the reverse osmosis of the absorbent core body 600 attached to the crotch area is reduced by the arrangement that the water absorption capacity of the absorbent core body 600 is reduced in a step shape from the longitudinal middle part to the longitudinal two ends, so that the use comfort is further improved, meanwhile, the distribution characteristic of the content of the high-molecular water-absorbing resin materials in the single absorbent core body 600 is maintained, the high-molecular water-absorbing resin materials are intensively distributed in the longitudinal middle part area of the absorbent core body 600, the preferential absorption effect is realized, the production cost is reduced, the quick absorption effect is realized, the leakage of the high-molecular water-absorbing resin materials is reduced, and the good water absorption performance is kept.

The two lateral sides of the upper non-woven fabric 610 are provided with folds 680, the folds 680 include at least one folding unit with a Z-shaped structure, preferably one folding unit, the upper non-woven fabric 610 is glued and adhered to the bulky non-woven fabric 620, and the folds 680 are arranged on the upper non-woven fabric 610, so that the strength of adhesion between the folds 680 on the upper non-woven fabric 610 and the bulky non-woven fabric 620 is relatively low, and still there is adhesive connection, so that the upper non-woven fabric 610 at the folds 680 is stretched out from the bulky non-woven fabric 620 after the high-molecular water-absorbent resin material absorbs water and expands during the process of conveying the product line or after the absorbent core body 600 is molded, i.e. the upper non-woven fabric 610 and the bulky non-woven fabric 620 are separated from each other, so that a larger buffer space is increased for the high-molecular water-absorbent resin material, and the water-absorbent capacity and the water-absorbent efficiency are improved.

Referring to fig. 4, the preparation process of the absorbent core body comprises:

1) The upper nonwoven fabric 610 is unwound and conveyed, and the upper nonwoven fabric 610 extends in a longitudinal direction along the conveying direction of the upper nonwoven fabric 610 and extends in a transverse direction along the width direction thereof;

2) Forming folds 680 on the upper non-woven fabric by folding the plate, and then gluing the upper surface of the upper non-woven fabric 610;

3) Unwinding and conveying the bulky nonwoven 620;

4) The product obtained in the step 2 and the bulk non-woven fabric 620 enter a first concave-convex roller compounding device in a continuous conveying mode, a first high molecular water absorbing resin material 640 is added on the upper surface of the upper non-woven fabric 610 through the first concave-convex roller device, an upper groove is pressed, and then the bulk non-woven fabric 620 is compounded on the upper non-woven fabric 610;

5) Inverting the article of step 4 180 ° so that the lofty nonwoven 620 is facing the underside;

6) The lower nonwoven fabric 630 is unwound and conveyed, and the upper surface of the lower nonwoven fabric 630 is glued;

7) The product in the step 7 and the lower layer non-woven fabric 630 are fed into a second concave-convex roller compounding device in a continuous conveying mode, a second high molecular water absorbing resin material 650 is added on the upper surface of the lower layer non-woven fabric 630 through the second concave-convex roller device, a lower groove is pressed, and then the product in the step 7 is compounded on the upper layer non-woven fabric 610;

8) The lateral sides of the lower nonwoven fabric 630 are folded upward and inward so as to be attached to the lateral sides of the upper surface of the upper nonwoven fabric 610;

9) The two lateral sides of the product in the step 8 are respectively sewed in a twice pressing mode through an ultrasonic welding device, so that an upper groove and a lower groove of the product in the step 8 are pressed and fixed to form a diversion trench, and the two lateral sides and the longitudinal direction of the product in the step 8 are sewed and fixed at intervals;

10 The article of step 9 is slit to form individual absorbent core bodies 600.

It is noted that, in the step 9, the flow guiding groove 660 includes a longitudinal flow guiding portion 661 and a flow dividing portion 662 disposed at two longitudinal ends of the longitudinal flow guiding portion 661, the longitudinal flow guiding portion 661 is in an i-shaped structure, the flow dividing portion 662 is in a V-shaped structure, the bottom of the flow guiding groove 660 is welded with a welding point 670 by ultrasonic, a region where the welding point 670 is distributed is a welding area 700, the welding point 670 in the flow guiding groove 660 is distributed in a row and is distributed along the length direction of the flow guiding groove 660, the welding point 670 in the longitudinal flow guiding portion 661 is in three rows, the welding point 670 in the flow dividing portion 661 is in two rows, the three rows of welding points in the longitudinal flow guiding portion 661 are defined to be a first row of welding unit 670a, a second welding unit 670b and a third welding unit 670c in sequence along the transverse direction, and the welding point 670 in the second welding unit 670b is welded and fixed twice.

The structures of the first embossing roller composite device and the second embossing roller composite device are disclosed in patent application number 202222962098.1, which is filed by the inventor of 2022, 11 and 04.

Referring to fig. 5 to 9, the ultrasonic welding device includes two welding mechanisms, each welding mechanism includes a support frame 1, a welding roller 2, a bottom roller 3, a welding assembly 4, a first driving motor (not shown in the drawing), a second driving motor (not shown in the drawing), a support assembly 5, a pressing adjusting assembly 6 and a gap adjusting assembly 7, two axial ends of the welding roller 2 are disposed on the support frame 1 through a first bearing seat 10, a welding area 200 is disposed in the axial middle of the welding roller 2, the first driving motor is in transmission connection with the welding roller 2, one axial end of the bottom roller 3 is disposed on the support frame 1 through a second bearing seat 20 and is distributed on the lower side of the welding roller 2, the other axial side of the bottom roller 3 is provided with a welding matching area 300, the axial length of the welding area is smaller than the axial length of the welding matching area by two times, the welding assembly 4 is disposed on the bottom roller 3, the second driving motor is in transmission connection with the bottom roller 3 through a transmission assembly, the support assembly 5 is disposed on the support bearing seat 20 and is disposed on the two axial sides of the welding roller 3, the pressing adjusting assembly is disposed on the two axial sides of the support frame 3, and the pressing adjusting assembly is used for adjusting the gap adjusting assembly 7 is disposed on the two axial sides of the bottom roller 3.

The welding assembly 4 is not described in detail herein for the prior art; the transmission assembly is disclosed in patent application number 202222963979.5, entitled ultrasonic welding device.

The utility model discloses ultrasonic welding device, cooperate through two sets of welding mechanism, realize the separately welded seam of the horizontal both sides of absorbing core body, thereby adapt to the welding seam that absorbing core body thickness is great, the speed is faster, and the fastness of sewing up is good, absorbing core body's quality is high, and the axial length size of the welding area 200 that is less than the welding cooperation area 300 of twice through single welding mechanism, the axial length size of welding area 200 is greater than the setting of the axial length size of welding cooperation area 300, make the horizontal middle part region of absorbing core body can realize the welding, and weld twice, and then make the guiding gutter that horizontal middle part set up can weld the shaping, and weld firmly, simultaneously, this structure is used for the support rotation of foundation roller 3 through the supporting component 5 that sets up, prevent radial run-out in the high-speed rotation in-process of foundation roller 3, and guarantee foundation roller 3 and welding roller 2's packing force, make the quality of the welding seam of absorbing core body promote, compare traditional welding device, it has saved a foundation roller, and can guarantee the running stability of equipment, thereby reduced the manufacturing cost of equipment.

Specifically, the support assembly 5 includes two support rollers 51, two the support rollers 51 are located on the support frame 1, two the support rollers 51 distribute in the downside of the bottom roller 3, and along the axis symmetric distribution of the bottom roller 3, two the axis of the support rollers 51 is parallel with the axis of the bottom roller 3, when the bottom roller 3 is installed, the bottom roller 3 supports against on the two support rollers 51, each support roller 51 includes a shaft 511 truss on the support frame 1, a roller body 512 sleeved on the shaft 511 and a bearing 513 arranged between the shaft 511 and the roller body 512, two support rollers 51 are located on the downside of the bottom roller 3, and are symmetrically distributed along the axis of the bottom roller 3, when the bottom roller 3 is installed, the bottom roller 3 supports against on the two support rollers 51, and the welding roller 2 supports against on the bottom roller 3, so that the bottom roller 3 and the welding roller 2 and the two support rollers 51 form a triangle support structure, the stability of high-speed rotation of the bottom roller 3 is improved, the running speed of the device is improved, and the production efficiency is improved.

In this embodiment, the pressing adjusting assembly 6 includes a guide slot 61 disposed on the support frame 1 and distributed on two axial sides of the welding roller 2, an air cylinder 62 or a hydraulic cylinder disposed at an upper end of the support frame 1, preferably an air cylinder, a connection seat 63 disposed at an output end of the air cylinder 62 or the hydraulic cylinder, two first bearing seats 10 are respectively disposed in the two guide slots 61, two ends of the connection seat 63 are respectively connected with two first bearing seats 10, the air cylinder 62 drives the two first bearing seats 10 to move up and down synchronously through the connection seat 63, so as to adjust the pressing force of the welding roller 2 and the bottom roller 3, the gap adjusting assembly 7 includes an inclined surface 71 disposed on a lower end surface of the first bearing seat 10, a wedge block 72 disposed between the first bearing seat 10 and the second bearing seat 20, and an adjusting screw 73 rotatably disposed on the support frame 1, the adjusting screw 73 is in threaded connection with the wedge block 72, and drives the wedge block 72 to move by rotating the adjusting screw 73, and the inclined surface 71 on the first bearing seat 10 cooperates with the wedge block 72, so as to adjust the gap between the welding roller 2 and the bottom roller 3.

While the application has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the application as defined by the appended claims.

Claims

1. A novel quick-drying absorbent core is characterized in that: including the absorbent core body, the definition extends to longitudinal direction along the length direction of absorbent core body, extends to transverse direction along its width direction, the absorbent core body includes upper non-woven fabrics, bulk non-woven fabrics, lower floor's non-woven fabrics, be equipped with first polymer water absorbent resin material between upper non-woven fabrics and the bulk non-woven fabrics, be equipped with second polymer water absorbent resin material between lower floor's non-woven fabrics and the bulk non-woven fabrics, upper non-woven fabrics is compounded in the upper surface of bulk non-woven fabrics through the sizing, lower floor's non-woven fabrics is compounded in the lower surface of bulk non-woven fabrics through the sizing, lower floor's non-woven fabrics's transverse width size is 8mm ~ 25mm bigger than bulk non-woven fabrics's transverse width size, lower floor's non-woven fabrics's transverse both sides upwards inwards fold and attach in upper surface of upper non-woven fabrics to through hot press or ultrasonic welding and upper non-woven fabrics, bulk non-woven fabrics fixed connection, upper non-woven fabrics's longitudinal both ends pass through hot press groove or ultrasonic welding and bulk non-woven fabrics, lower floor's non-woven fabrics fixed connection, the transverse middle part of absorbent core body suppresses has a guiding groove, the guiding groove along longitudinal direction, guiding portion distributes through the vertical side and the vertical side that is the welding structure, the vertical side that the guiding portion is located the vertical side and the welding portion is the welding point that has the type of welding region, the welding region.

2. The novel quick-absorbent dry absorbent core of claim 1, wherein: the welding points in the diversion trenches are distributed in a row shape and are distributed along the length direction of the diversion trenches, the number of the welding points in the longitudinal diversion portion is three, and the number of the welding points in the diversion portion is two.

3. The novel quick-absorbent dry absorbent core of claim 2, wherein: the three rows of welding points in the longitudinal flow guide part are defined to be a first row of sewing units, a second sewing unit and a third sewing unit in sequence along the transverse distribution, and the welding points in the second sewing unit are staggered with the welding points in the first sewing unit and the third sewing unit.

4. A novel quick-absorbent dry absorbent core according to claim 3, characterized in that: the welding points of the first sewing unit and the third sewing unit are fixedly connected with the upper non-woven fabric and the bulked non-woven fabric, and the welding points of the second sewing unit are fixedly connected with the upper non-woven fabric, the bulked non-woven fabric and the lower non-woven fabric.

5. The novel quick-absorbent dry absorbent core according to any one of claims 1 to 4, characterized in that: the first high-molecular water-absorbing resin material is adhered to the lower surface of the upper non-woven fabric, and the second high-molecular water-absorbing resin material is adhered to the upper surface of the lower non-woven fabric.

6. The novel quick-absorbent dry absorbent core of claim 5, wherein: the welding point is of an O-shaped structure.

7. The novel quick-absorbent dry absorbent core of claim 6, wherein: the ratio of the transverse width dimension of the welding area to the transverse width dimension of the diversion trench is 3-4:6.

8. The novel quick-absorbent dry absorbent core of claim 7, wherein: the transverse width of the welding area is 6mm, and the transverse width of the diversion trench is 11mm.

9. The novel quick-absorbent dry absorbent core of claim 1, wherein: the ratio of the longitudinal length dimension of the diversion trench to the longitudinal length dimension of the absorbent core body is 0.6-0.8:1.

10. The novel quick-absorbent dry absorbent core of claim 1, wherein: the water absorption capacity of the absorbent core body is reduced in a step shape from the longitudinal middle part to the longitudinal two ends.