CN210301435U

CN210301435U - Composite core and paper diaper using same

Info

Publication number: CN210301435U
Application number: CN201920857403.6U
Authority: CN
Inventors: 赵明
Original assignee: Hangzhou Beigao Maternal And Infant Products Co ltd
Current assignee: Hangzhou Beigao Maternal And Infant Products Co ltd
Priority date: 2019-06-06
Filing date: 2019-06-06
Publication date: 2020-04-14
Anticipated expiration: 2029-06-06

Abstract

The utility model discloses a compound core and use panty-shape diapers of this compound core belongs to the panty-shape diapers field, has solved among the prior art core and has become easily to stick together, uses the problem of feeling poor. The water-absorbent resin composite core comprises water-absorbent resin and a core outer layer positioned outside the core, and also comprises a support middle layer and a fixing part for fixing the support middle layer, wherein the support middle layer is fluffy chemical fibers wound with each other, the water-absorbent resin is arranged on the support middle layer, the fixing part comprises an upper non-woven fabric and a lower non-woven fabric which are fixed on two pairs of side surfaces of the support middle layer, and the water-absorbent resin is uniformly fixed on the upper non-woven fabric and the lower non-; the paper diaper comprises a composite core body, an outer layer non-woven fabric and a breathable waterproof membrane which are coated outside the core body, a three-dimensional enclosure sheet fixed on the outer layer non-woven fabric, and a wearing part arranged on the three-dimensional enclosure sheet and used for wearing and fixing. The utility model discloses a fluffy chemical fiber improves the formability of compound sandwich layer, reduces the sandwich layer and splits into the possibility that sticks together, improves the use sense.

Description

Composite core and paper diaper using same

Technical Field

The utility model relates to a panty-shape diapers field, in particular to composite core and panty-shape diapers that use this composite core.

Background

With the development of economy and the improvement of quality of life, diapers that need to be changed and washed frequently have been gradually replaced with disposable diapers. The paper diaper is mainly used for babies, and provides convenience for the excretion of the babies and the care of the babies for adults, and the key technology of the water absorption core of the paper diaper is the core body.

The core of the paper diaper sold in the market at present is mostly formed by mixing wood fiber and water-absorbent resin, and the water-absorbent resin is distributed in the core in a flat mode. Because wood fiber's fibre intensity is low, the baby can often produce the kneading with ground, furniture or human body in the wearing process, and monoblock wood fiber breaks very easily and forms the fibre piece of polylith split to shift gradually, lead to the thickness of core uneven, become easily after absorbing the urine and stick together, the use feels poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming among the prior art core and becoming to stick together easily, use and feel poor not enough, and provide a compound core and use panty-shape diapers of this compound core, reached the core and be difficult to play to stick together, improve the effect of use sense.

The above technical purpose of the present invention can be achieved by the following technical solutions:

a composite core comprises water-absorbent resin, a core outer layer positioned on the outer side of the core, a support middle layer and a fixing part for fixing the support middle layer, wherein the support middle layer is fluffy chemical fibers wound with each other, and the water-absorbent resin is arranged between the support middle layer and the fixing part.

Adopt above-mentioned technical scheme, chemical fibre is the macromolecular compound that uses natural macromolecular compound or synthetic as the raw materials, and the fibre of making, chemical fibre's intensity is high, and there is the support middle level that the chemical fibre formed, when receiving the kneading, be difficult for producing self fracture to reduce the possibility that supports the middle level and be destroyed and shift in the core, reduce the thickness of core uneven and the easy possibility that becomes to stick together after absorbing the urine that leads to, improve the use sense. Meanwhile, the chemical fiber in the scheme is of a fluffy structure, so that the integral compressibility of the core body can be increased, and the hand feeling and the pressing feeling are improved; on the other hand, surplus space exists in the fluffy chemical fibers which are wound with each other, water absorption expansion space can be provided for the water absorbent resin, the water absorbent resin after expansion can be clamped between the fluffy chemical fibers which are wound with each other, positioning is realized, and the movement of the water absorbent resin is reduced. Finally, the chemical fiber has small water absorption, and is not easy to be compressed or lump when absorbing water, thereby improving the overall stability of the composite core body.

More preferably: the fixing part comprises an upper layer of non-woven fabric and a lower layer of non-woven fabric which are fixed on two pairs of side surfaces of the supporting middle layer.

Adopt above-mentioned technical scheme, will support the middle level and carry out shaping and fixed, protect supporting the middle level simultaneously, locate between upper non-woven fabrics and the lower floor non-woven fabrics with water absorbent resin clamp simultaneously, reduce the possibility that water absorbent resin dropped.

More preferably: the side surfaces of the upper non-woven fabric layer and the lower non-woven fabric layer, which are close to the supporting middle layer, are provided with first glue layers, the water-absorbing resin is uniformly fixed on the first glue layers, and the supporting middle layer is fixed on the first glue layers.

Adopt above-mentioned technical scheme, can only install partial water-absorbing resin in the fluffy support middle level, after water-absorbing resin is in large quantity, just drop from supporting the middle level easily, in order to guarantee water-absorbing resin's quantity and the water absorption degree of consistency of each part of core, with water-absorbing resin even bonding on first glue film. Meanwhile, the water-absorbent resin is granular, and gaps exist among the granules and can be bonded with the fibers of the support middle layer, so that the support middle layer and the water-absorbent resin are bonded.

More preferably: the supporting middle layer is made of ES fibers.

By adopting the technical scheme, after the ES fibers are subjected to hot air treatment, the fibers are mutually connected to form a fluffy fiber net. The ES fiber can be treated by hydrophilic oil agent or water-repellent oil agent before heat treatment to increase or decrease the hydrophilic group on the fiber surface. The ES fiber is mainly composed of PP or PET, the PP has good bending fatigue resistance, can be kneaded for many times, the integral stability of the composite core body is improved, the possibility of internal fracture of the support middle layer is reduced, and the use feeling is improved. The PET has good abrasion and friction resistance, high strength and light weight, when the PET is used for manufacturing the support middle layer, the kneading resistance of the composite core body is good, meanwhile, the fibers of the support middle layer are not easy to break, the possibility that the support middle layer moves to be lump in the core body is reduced, and the use feeling is improved. PP and PET's hydroscopicity is all very little, and prior art's wood fiber hydroscopicity is great, becomes easily to stick together and compress after absorbing water, and the scheme when compound core absorbs water, PP and PET can not produce because of absorbing water and compress into the deformation condition such as stick together, have improved the stability of compound core.

More preferably: a paper diaper comprises a composite core body, an outer layer non-woven fabric and a breathable waterproof membrane which are coated outside the core body, a three-dimensional enclosure sheet fixed on the outer layer non-woven fabric, and a wearing part arranged on the three-dimensional enclosure sheet and used for wearing and fixing; the outer-layer non-woven fabric and the breathable waterproof membrane are respectively arranged on two opposite sides of the composite core body, two side edges of the outer-layer non-woven fabric are fixed on the breathable waterproof membrane, and a second adhesive layer is arranged between the outer-layer non-woven fabric and the outer layer of the core body; the three-dimensional enclosure sheet extends from the outer layer non-woven fabric to one side far away from the breathable waterproof membrane.

Adopt above-mentioned technical scheme, the panty-shape diapers of compound core in this scheme of use, it can keep the stability of core internal material after rubbing many times, and core internal material is difficult for becoming to stick together, improves panty-shape diapers's use and feels. The outer-layer non-woven fabric prevents the composite core from being in direct contact with a baby, and simultaneously further protects the composite core, so that the composite core cannot be directly influenced when the baby rubs with the paper diaper; the outer non-woven fabric and the core body are bonded through the second glue layer, the possibility that the composite core body moves inside the paper diaper is reduced, and the overall stability of the paper diaper is improved. The breathable waterproof film prevents liquid from permeating from the paper diaper, ensures the breathability of the paper diaper and reduces the stuffy feeling of the paper diaper. The wearing part fixes the paper diaper outside the baby body to realize wearing.

More preferably: the outer non-woven fabric is fixed with upper non-woven fabric, and the upper non-woven fabric is hydrophilic non-woven fabric.

Adopt above-mentioned technical scheme, upper strata non-woven fabrics and skin direct contact, hydrophilic non-woven fabrics are better to the adsorption efficiency of urine, improve panty-shape diapers and to the absorption effect of urine.

More preferably: the wearing part comprises a magic hook sheet, one side of the breathable waterproof membrane, which is far away from the outer-layer non-woven fabric, is fixedly provided with a bottom-layer non-woven fabric, one end of the magic hook sheet is fixedly arranged between the outer-layer non-woven fabric and the bottom-layer non-woven fabric, and the other end of the magic hook sheet extends towards the outer side of the bottom-layer non-; the magic colludes piece and is provided with two, and is located the both sides of the same end of bottom non-woven fabrics length direction respectively.

Adopt above-mentioned technical scheme, collude the piece with the magic and bond outside bottom non-woven fabrics, realize that the wearing of panty-shape diapers is fixed. The magic colludes the piece and is provided with two for both sides are fixed even about, improve and dress fixed effect.

More preferably: the wearing portion further comprises a non-woven fabric sticking piece fixed on the bottom non-woven fabric far away from one side face of the composite core body, and the non-woven fabric sticking piece and the magic hook piece are located at two ends of the bottom non-woven fabric in the length direction respectively.

By adopting the technical scheme, the non-woven fabric has a plurality of fibers, the magic hook sheet can be tangled with the fibers on the non-woven fabric to realize fixation, and the fibers on the surface layer of the non-woven fabric can be fluffed after being bonded and torn for many times; if the magic colludes the piece and directly bonds with bottom non-woven fabrics, because the bottom non-woven fabrics is arranged in ventilative waterproofing membrane fixedly, if the magic colludes the piece and bonds many times and tear the back, bottom non-woven fabrics attenuation, then probably directly destroy ventilative waterproofing membrane, pose the threat to the waterproof nature of panty-shape diapers. So set up the non-woven fabrics in the bottom non-woven fabrics outer and treat the bonding piece, be used for the magic to collude the bonding of piece specially, reduce the influence to bottom non-woven fabrics and ventilative water proof membrane.

More preferably: the non-woven fabric sheet to be bonded comprises a support sheet, a third adhesive layer coated on the outer side surface of the support sheet, and non-woven fabric strips bonded on the third adhesive layer, wherein the non-woven fabric strips are uniformly arranged at intervals.

By adopting the technical scheme, the supporting sheet is a plastic film, is a flexible broken product with longer elongation rate, and provides tearing strength and support for the non-woven fabric strips; on the other hand, the non-woven fabrics strip is not direct to be covered on the support piece, but is provided with many at even interval, reduces the area covered of non-woven fabrics, guarantees under magic colludes piece and the non-woven fabrics strip bonding strength's the condition for the magic colludes the piece and tears more easily.

More preferably: the plurality of non-woven fabrics are wavy.

Adopt above-mentioned technical scheme, increase the length of non-woven fabrics to increase the area of non-woven fabrics strip on the backing sheet, can increase the magic and collude the bonding area of piece and non-woven fabrics strip, improve bonding strength.

To sum up, the utility model discloses following beneficial effect has:

1. by arranging the supporting middle layer and the fixing part which are made of the fluffy chemical fibers which are mutually wound, the possibility that the supporting middle layer is damaged and is displaced in the core body is reduced, the possibility that the core body is easy to lump after absorbing urine due to uneven thickness of the core body is reduced, and the use feeling is improved;

2. the water-absorbent resin and the support middle layer are fixed on the upper non-woven fabric layer and the lower non-woven fabric layer by arranging the first adhesive layer, so that the water-absorbent resin and the support middle layer are fixed;

3. treat the adhesion sheet through setting up the non-woven fabrics, be used for the magic to collude the bonding of piece specially, reduce the influence to bottom non-woven fabrics and ventilative water proof membrane.

Drawings

FIG. 1 is a schematic sectional view of example 1;

FIG. 2 is a schematic sectional view of example 2;

FIG. 3 is a schematic sectional view showing a part of the structure of example 2;

FIG. 4 is a schematic structural view of a partial structure of the outer nonwoven fabric;

FIG. 5 is a schematic structural view of a part of a structure of a nonwoven fabric sheet to be bonded.

Reference numerals: 1. a water-absorbent resin; 2. an outer layer of the core; 3. a support middle layer; 4. a fixed part; 41. an upper layer of non-woven fabric; 42. a lower layer of non-woven fabric; 43. a first glue layer; 5. outer layer non-woven fabric; 51. a second adhesive layer; 6. a breathable waterproof film; 7. a three-dimensional enclosure sheet; 71. a side panel; 72. a front waist panel; 73. a back waist panel; 74. side rubber bands; 75. waist rubber band; 76. the rubber band is prevented from leaking laterally; 8. a wearing portion; 81. a magic hook sheet; 82. non-woven fabric to-be-bonded sheets; 821. a support sheet; 822. a third adhesive layer; 823. a non-woven fabric strip; 9. an upper layer of non-woven fabric; 91. a protrusion; 10. a bottom layer of non-woven fabric.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example 1:

a composite core, as shown in figure 1, comprises an inner core and a core outer layer 2 wrapping the outer side of the inner core.

The inner core comprises a support middle layer 3, a fixing part 4 for fixing the support middle layer 3 and water-absorbing resin 1 arranged between the fixing part 4 and the support middle layer 3. The support middle layer 3 is a fluffy ES fiber net which is obtained by heat treatment of ES fibers.

The fixing portion 4 includes an upper layer nonwoven fabric 41 located above the support middle layer 3, an upper layer nonwoven fabric 41 located below the support middle layer 3, and a first adhesive layer 43 disposed on the side surfaces of the upper layer nonwoven fabric 41 and the lower layer nonwoven fabric 42 close to the support middle layer 3, and the water absorbent resin 1 is uniformly adhered to the first adhesive layer 43. The water-absorbent resin 1 does not cover the first adhesive layer 43 completely, and the exposed part of the first adhesive layer 43 is bonded and fixed with the support middle layer 3, so that the support middle layer 3, the water-absorbent resin 1 and the fixing part 4 are fixed. The core outer layer 2 is wrapped outside the upper layer non-woven fabric 41 and the lower layer non-woven fabric 42.

Because the water absorbent resin 1 is granular, gaps exist among the granules, and the water absorbent resin can be bonded with the ES fibers of the supporting middle layer 3, so that the bonding of the supporting middle layer 3 and the water absorbent resin 1 is realized.

In this embodiment, the core outer layer 2 is an SMS composite nonwoven fabric, and the upper layer nonwoven fabric 41 and the lower layer nonwoven fabric 42 are both spunlace nonwoven fabrics.

The implementation principle of the embodiment is as follows: the ES fiber is high in strength and not easy to break after being kneaded for many times, and meanwhile, the first glue layer 43 fixes the support middle layer 3, so that the possibility that the support middle layer 3 moves in the core outer layer 2 is greatly reduced, and the stability and the use feeling of the composite core are improved. On the other hand, the water-absorbent resin 1 is uniformly fixed to the fixing portion 4, and the water absorption uniformity of the composite core is ensured.

Example 2:

a diaper comprises, as shown in FIG. 2, example 1, an outer layer nonwoven fabric 5 and a breathable waterproof film 6 which are wrapped around the outside of a composite core, a three-dimensional protective sheet for preventing side leakage, and a wearing portion 8 for wearing and fixing.

As shown in fig. 3, the outer layer of nonwoven fabric 5 is located above the composite core, and the air-permeable waterproof membrane 6 is located below the composite core. The length directions of the outer layer non-woven fabric 5 and the breathable waterproof membrane 6 are parallel to the length direction of the composite core, and the widths of the outer layer non-woven fabric 5 and the breathable waterproof membrane 6 are larger than the span width of the composite core.

The lower surface of the outer non-woven fabric 5 is provided with a second adhesive layer 51, and the upper surface of the core outer layer 2 is bonded on the second adhesive layer 51; the upper surface of the outer layer non-woven fabric 5 is fixed with an upper layer non-woven fabric 9 which is in direct contact with the baby, the upper layer non-woven fabric 9 is bonded on the outer layer non-woven fabric 5 through hot air, and the upper layer non-woven fabric 9 is provided with a bulge 91 (see fig. 4). Two sides of the outer layer non-woven fabric 5 in the length direction are bonded and fixed on the upper surfaces of the breathable waterproof films 6 on two sides of the composite core in the length direction, and the lower surface of the breathable waterproof film 6 is bonded with a bottom layer non-woven fabric 10.

As shown in fig. 2, the three-dimensional containment sheet 7 includes two side sheets 71, a front waist sheet 72 integrally formed on the side sheet 71 to be fitted to the front waist of the infant, and a back waist sheet 73 integrally formed on the side sheet 71 to be fitted to the back waist of the infant.

One side edge of each of the two side pieces 71 is respectively bonded to the two side edges of the outer-layer non-woven fabric 5 in the length direction, the other side edge extends towards the upper-layer non-woven fabric 9, and the projection of the side piece 71 and the composite core body in the thickness direction of the composite core body is overlapped; the longitudinal direction of the side sheet 71 is parallel to the longitudinal direction of the base nonwoven fabric 10, and both ends of the side sheet 71 are bonded to the upper surfaces of the outer layer nonwoven fabric 5 and the base nonwoven fabric 10. Two side edge leakage-proof rubber bands 76 are fixed on the side edge of the side piece 71 close to the upper layer non-woven fabric 9, and two side edge rubber bands 74 are fixed on the side edge of the side piece 71 far away from the upper layer non-woven fabric 9; the side leakage preventing rubber strings 76 and the side rubber strings 74 are arranged in parallel to the length direction of the side sheet 71.

The front waist panel 72 is integrally formed at one end of the side panel 71 in the longitudinal direction, a front waist panel 72 is fixed to each side panel 71, and the front waist panel 72 extends outward from the outer side edge of the side panel 71 away from the composite core to the outside of the composite core. The back waist panel 73 is integrally formed at one end of the side panel 71 in the length direction where the front waist panel 72 is not disposed, a back waist panel 73 is fixed to each side panel 71, and the front waist panel 72 extends outward from the outer side edge of the side panel 71 away from the composite core to the outside of the composite core. The base nonwoven 10 extends away from the outer side edge of the composite core to coincide with the outer side edges of the front waist panel 72, the back waist panel 73 and the side panels 71.

The three-dimensional enclosure sheet 7, the upper non-woven fabric 9, the outer non-woven fabric 5, the breathable waterproof membrane 6 and the bottom non-woven fabric 10 are sequentially bonded, and a plurality of waist rubber bands 75 are bonded between the outer non-woven fabric 5 and the breathable waterproof membrane 6. Waist rubber band 75 sets up in the one end that outer non-woven fabrics 5 is close to back waist piece 73, and waist rubber band 75 perpendicular to lateral plate 71's length direction sets up, and the both ends of waist rubber band 75 length direction extend to back waist piece 73 place region.

The wearing part 8 comprises two magic hook sheets 81 fixed at the back waist sheet 73 and a non-woven fabric layer to be bonded on the outer surface of the bottom non-woven fabric 10. One end of each of the two magic hook sheets 81 is adhered between the back waist sheet 73 and the bottom non-woven fabric 10, and the other end extends to one side far away from the composite core body. As shown in fig. 5, the non-woven fabric layer to be bonded includes a support sheet 821, a third glue layer 822 disposed on two opposite sides of the support sheet 821, and a plurality of non-woven fabric strips 823 adhered to the layer to be bonded, the plurality of non-woven fabric strips 823 are uniformly and alternately disposed, and the non-woven fabric strips 823 are wave-shaped.

In this embodiment, the side sheet 71, the front waist sheet 72 and the back waist sheet 73 are all SMS composite non-woven fabrics; the outer layer non-woven fabric 5 and the upper layer non-woven fabric 9 are hydrophilic non-woven fabrics; the base nonwoven fabric 10 is a through-air nonwoven fabric, and is bonded to the front waist panel 72 and the back waist panel 73 through-air bonding.

The implementation principle of the embodiment is as follows: the diaper is put through the crotch of a baby, the back waist piece 73 is arranged at the back of the waist, the front waist piece 72 is arranged at the front waist, and the magic hook piece 81 is adhered to the non-woven fabric to-be-adhered piece 82 to finish the wearing. When the baby discharges liquid, the liquid is absorbed by the bulges 91, and the liquid which can not be absorbed by the single bulge 91 or the liquid which can not be absorbed in a certain time is guided to the rest bulges 91 and the periphery bulges 91 through the gaps between the bulges 91 for absorption, so that the absorption speed is improved. The projections 91 transmit liquid into the composite core, absorb water by the water-absorbent resin 1, and swell in the support middle layer 3.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. The utility model provides a composite core, includes absorbent resin (1) and is located the outer (2) of core outside the core, its characterized in that still includes and supports middle level (3), is used for fixed stay fixed part (4) of middle level (3), support middle level (3) for fluffy chemical fibre of intertwine, absorbent resin (1) sets up in supporting between middle level (3) and fixed part (4).

2. A composite core as claimed in claim 1, wherein said anchoring portion (4) comprises an upper layer of non-woven fabric (41) and a lower layer of non-woven fabric (42) anchored to the two opposite sides of the supporting middle layer (3).

3. A composite core as claimed in claim 2, wherein the upper layer nonwoven fabric (41) and the lower layer nonwoven fabric (42) are provided with a first adhesive layer (43) on the side adjacent to the support middle layer (3), the water-absorbent resin (1) is uniformly fixed on the first adhesive layer (43), and the support middle layer (3) is fixed on the first adhesive layer (43).

4. A composite core according to claim 1, characterised in that the supporting middle layer (3) is made of ES fibres.

5. A paper diaper, characterized by comprising the composite core body as claimed in any one of claims 1 to 4, further comprising an outer layer non-woven fabric (5) and a breathable waterproof membrane (6) which are coated outside the core body, a three-dimensional enclosure sheet (7) which is fixed on the outer layer non-woven fabric (5), and a wearing part (8) which is arranged on the three-dimensional enclosure sheet (7) and is used for wearing and fixing; the outer-layer non-woven fabric (5) and the breathable waterproof membrane (6) are respectively arranged on two opposite sides of the composite core body, two side edges of the outer-layer non-woven fabric (5) are fixed on the breathable waterproof membrane (6), and a second adhesive layer (51) is arranged between the outer-layer non-woven fabric (5) and the core body outer layer (2); the three-dimensional enclosure sheet (7) extends from the outer layer non-woven fabric (5) to one side far away from the breathable waterproof membrane (6).

6. A pant diaper according to claim 5, wherein the outer nonwoven (5) is provided with an upper nonwoven (9), the upper nonwoven (9) being a hydrophilic nonwoven.

7. The diaper according to claim 5, wherein the wearing portion (8) comprises a magic hook sheet (81), a bottom non-woven fabric (10) is fixed on one side of the air-permeable waterproof membrane (6) away from the outer non-woven fabric (5), one end of the magic hook sheet (81) is fixed between the outer non-woven fabric (5) and the bottom non-woven fabric (10), and the other end extends towards the outside of the bottom non-woven fabric (10); the magic hook pieces (81) are two and are respectively positioned on two sides of the same end of the bottom non-woven fabric (10) in the length direction.

8. The diaper according to claim 7, wherein the wearing portion (8) further comprises a non-woven fabric sticking-preventive sheet (82) fixed to a side of the bottom non-woven fabric (10) away from the composite core, the non-woven fabric sticking-preventive sheet (82) and the hook-and-loop fastener (81) being respectively located at both ends of the bottom non-woven fabric (10) in the length direction.

9. A pant diaper according to claim 8, wherein the non-woven fabric sheet (82) comprises a support sheet (821), a third glue layer (822) applied on the outer side of the support sheet (821), and non-woven fabric strips (823) adhered on the third glue layer (822), and the non-woven fabric strips (823) are uniformly and alternately arranged.

10. A pant diaper according to claim 9, wherein the non-woven strip (823) is wavy.