CN111358623B

CN111358623B - Light, thin and soft absorber and online integrated production method and application of absorber

Info

Publication number: CN111358623B
Application number: CN201811588875.2A
Authority: CN
Inventors: 卢青春; 霍毅松
Original assignee: Suzhou Kehua Juhui New Material Co ltd
Current assignee: Suzhou Baihan Weikang New Material Co ltd
Priority date: 2018-12-25
Filing date: 2018-12-25
Publication date: 2022-04-08
Anticipated expiration: 2038-12-25
Also published as: CN111358623A

Abstract

The invention discloses a light, thin and soft absorber, an online and finished product integrated manufacturing method and application thereof. The manufacturing method comprises the following steps: providing a fluffy material with gaps, and compounding the fluffy material with a liner material to form a composite absorption main body; applying a water absorbing material on at least one composite absorbing main body in an online broadcasting mode, wherein the water absorbing material is uniformly distributed on the surface and/or in the gaps of the fluffy material, and then combining the wrapping material with the water absorbing material; and respectively arranging a first surface layer and a second surface layer on the first surface and the second surface which are opposite to each other of the obtained composite absorption body to obtain the light, thin and soft absorption body. According to the invention, the thin and soft absorber is manufactured on the whole product in an online production mode, so that the thin and soft absorber can be manufactured on line, the effect of obviously reducing the overall cost is achieved, the distribution of various different types of water-absorbing materials is realized, the product performance is further improved, and the continuous and healthy development of the whole industry is facilitated.

Description

Light, thin and soft absorber and online integrated production method and application of absorber

Technical Field

The invention relates to a light and thin soft absorber, in particular to a method for manufacturing the light and thin soft absorber integrally with a finished product on line, and application of the light and thin soft absorber in products containing the absorber, such as baby diapers, paper diapers, pull-ups, adult incontinence products, women sanitary napkins, panty liners and the like.

Background

Conventionally, there have been known baby diapers, diaper pants, pull-ups, and the like, as well as adult incontinence products, sanitary napkins, panty liners, and the like, which are manufactured by mixing a water-absorbent polymer resin material with fluff pulp, cotton pulp, and the like, and consumers, particularly in the china and the northeast asia, have fed back that such a hybrid absorbent is too thick and hard at present, and even though manufacturers who produce such products have tried to increase the ratio of the polymer absorbent powder, the products are intended to be thin and soft, but are still far from the consumers' expectation.

At present, a plurality of manufacturers in China currently manufacture composite cores in an off-line mode, specifically, fluffy non-woven fabrics are used for replacing fluff pulp, then water absorbing powder is scattered on the fluffy non-woven fabrics, and then the non-woven fabrics are attached up and down to form a laminated structure so as to realize a thin and soft absorber. The product made by the method meets the demands of consumers on thinness and softness, and the machine speed is low due to the facts that the used fluffy cotton materials are low in strength, cannot run at a high speed, and have the problems of water absorption powder scattering and the like, and therefore production efficiency is low and production cost is too high; in addition, after the materials are compounded, the materials are kept fluffy to ensure the performance of the composite core body, so that the material package cannot be extruded, and the transportation cost is higher; and the water-absorbing powder particles are easy to shift in the fluffy non-woven fabric due to the shaking in the processes of factory transfer, transportation and cutting, so that the water-absorbing performance is not uniform in distribution and the problem of water-absorbing performance in use is brought. By combining the factors, the composite core body has the problems of overhigh cost and stable quality, the main cost increase comes from off-line processing cost, transportation cost and the like, the wider use of the composite core body is limited, and the functionality of sanitary products such as paper diapers and the like is reduced.

Disclosure of Invention

The invention mainly aims to provide a light, thin and soft absorber and an online integrated manufacturing method of the absorber and a finished product, so as to overcome the defects of the prior art.

Another object of the present invention is to provide the application of the light, thin and soft absorber.

In order to achieve the purpose, the technical scheme adopted by the invention comprises the following steps:

the embodiment of the invention provides an online and finished product integrated manufacturing method of a light, thin and soft absorber, which comprises the following steps:

providing a fluffy material with gaps, and compounding the fluffy material with a liner material to form a composite absorption main body;

applying a water absorbing material on at least one composite absorption main body by online broadcasting in an online production mode together with the sanitary care product, wherein the water absorbing material is uniformly distributed on the surface and/or in the gaps of the fluffy material, and then combining the water absorbing material with a wrapping material; and the number of the first and second groups,

and respectively arranging a first surface layer and a second surface layer on the first surface and the second surface of the obtained composite absorption main body to obtain a light, thin and soft absorption body, wherein the first surface and the second surface are oppositely arranged.

In some embodiments, the manufacturing method specifically includes: and by means of vacuum adsorption, oscillation, pressing or stamping, the water absorbing material is unreeled on line and is simultaneously scattered on one composite absorbing main body or between at least two composite absorbing main bodies, and the water absorbing material is uniformly distributed on the surface and/or in gaps of the fluffy material.

The embodiment of the invention also provides a light, thin and soft absorber manufactured by the method.

Further, the light, thin, soft absorbent body includes:

a first surface layer which is a front surface layer contacting the skin;

a second surface layer which is a back surface layer not contacting with the skin; and the number of the first and second groups,

the composite absorption body is arranged between the first surface layer and the second surface layer, the composite absorption body is provided with a first surface and a second surface, the first surface and the second surface are arranged oppositely, the first surface layer is attached to the first surface, the second surface layer is attached to the second surface, the composite absorption body comprises a fluffy material and a liner material which are mutually combined and provided with gaps, and water absorption materials are uniformly distributed on the surface of the fluffy material and/or in the gaps.

The embodiment of the invention also provides application of the light, thin and soft absorber in the field of preparing sanitary care products.

Correspondingly, the embodiment of the invention also provides a sanitary care product which comprises the light, thin and soft absorber.

Further, the sanitary care products include baby diapers, baby pull-ups, adult incontinence products, feminine sanitary napkins or pads, and the like, but are not limited thereto.

Compared with the prior art, the invention has the advantages that:

1) according to the method for manufacturing the light, thin and soft absorber integrally with the finished product on line, the thin and soft absorber is manufactured on the whole product in an on-line production mode, so that the thin and soft absorber can be manufactured on line, various different absorbing structures can be realized, the influence of external production and transportation conditions on the core body quality is avoided, the transportation cost is reduced, and the effect of remarkably reducing the overall cost is achieved;

2) the method for manufacturing the light, thin and soft absorber integrally with the finished product on line can improve the stability of the absorption performance of the product and realize various different water absorption powder scattering and distribution modes, thereby realizing the thinness and softness of the core body, obviously improving the performance and being beneficial to the continuous and healthy development of the whole industry.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the description of the embodiment or the prior art will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.

Fig. 1 is a schematic view of a bulky nonwoven fabric according to an exemplary embodiment of the present invention.

Fig. 2 is a schematic structural view of a media for combining lofty nonwoven fabrics with a cushioning material in an exemplary embodiment of the invention.

Fig. 3 is a schematic diagram of a structure of a gasket-like material in an exemplary embodiment of the invention.

Fig. 4 is a schematic structural view of a composite absorbent main body in which bulky nonwoven fabric and a cushion-like material are combined according to an exemplary embodiment of the present invention.

Fig. 5 is a schematic view of a method for applying vacuum adsorption spreading in an exemplary embodiment of the present invention, in which fluffy cotton is wound on a drum, and absorbent powder is adsorbed and spread on the fluffy cotton after passing through a forming cavity.

Fig. 6 is a schematic view of a method for applying water absorbent powder to fluffy cotton by oscillating water absorbent powder spreading in an exemplary embodiment of the present invention.

Fig. 7 is a schematic view of a method for spreading absorbent powder on fluffy cotton by stamping according to an exemplary embodiment of the present invention.

Fig. 8 is a schematic structural diagram of an absorber in an exemplary embodiment of the invention.

Fig. 9 is a schematic view of an absorber structure of a multilayer structure in an exemplary embodiment of the invention.

Detailed Description

As described above, in view of the defects of the prior art, the inventor of the present invention has made extensive studies and practices to provide a technical solution of the present invention, which is mainly to attach a carrier to fluffy cotton to enhance the strength of the fluffy cotton, while maintaining the fluffy characteristic of the fluffy cotton, and then to directly use the fluffy cotton in the production line of finished products such as baby diapers, paper diapers and pull-ups, adult incontinence products, sanitary napkins and pads, and to broadcast absorbent materials such as absorbent powder on line, and to realize various absorbent structures, thereby reducing transportation costs, improving the production efficiency of cores, and comprehensively reducing the production costs of products.

The technical solution, its implementation and principles, etc. will be further explained as follows.

In one aspect of the present invention, a method for manufacturing a light, thin and flexible absorbent body on-line and integrally with a finished product includes:

In some embodiments, the lofty material comprises a lofty nonwoven fabric, but is not limited thereto.

Further, the fluffy non-woven fabric can be 18-150 g/m in gram weight²Preferably 25 to 100g/m²Any type of nonwoven fabric.

In some embodiments, the liner-type material includes liner non-woven fabric or threads, that is, the fluffy non-woven fabric may be first combined with the liner non-woven fabric or threads, so as to increase the strength and effectively realize online high-speed unwinding.

Further, the non-woven fabric pad can be 6-80 g/m in gram weight²Especially 8 to 25g/m²Such as, but not limited to, spunmelt nonwoven (SMS), Spunbond (Spunbond), spunlace, or airlaid, etc.

In some embodiments, the method of making comprises: and compounding the fluffy material and the liner material by adopting a glue laminating, ultrasonic wave, hot pressing or cold pressing mode.

Further, the manufacturing method further comprises the following steps: and slitting the composite absorption main body.

Further, the width of cutting is 70-160 mm, and especially preferred is 80-120 mm.

Further, the slitting comprises integral slitting or offline individual slitting, wherein when the offline individual slitting is performed, the composite absorption main body is in a winding type package, a spindle type package or a box type package, particularly preferably in the box type package, and the box type package is more economical.

Further, the absorbent material includes, but is not limited to, SAP, i.e., absorbent polymer material, absorbent wood pulp-based material, and the like.

Further, the water absorbing material is preferably a powdery water absorbing powder.

Further, the online unreeling speed is 50-800 m/min, preferably 80-600 m/min.

Further, the water-absorbent polymer may be spread on the bulky nonwoven fabric in the form of a line, and 0.2g to 100g of the water-absorbent polymer per one sheet of the absorbent material may be realized.

Further, the absorbent material may be a layer of bulky material-dispersed water-absorbent material such as a water-absorbent polymer structure, or may be a layer of two or more layers of bulky material-dispersed water-absorbent polymer structures.

In a preferred embodiment, the manufacturing method comprises: adopt shale shaker formula dusting system will water-absorbing material unreels simultaneously in one on line or at least two in the combined absorption main part between the combined absorption main part, wherein, shale shaker formula dusting system includes: the device comprises a water absorbing material feeding mechanism, a weighing mechanism, a vibrating screen water absorbing material receiving mechanism and a vibrating dusting mechanism.

Further, the manufacturing method specifically comprises the following steps: and conveying the water absorbing material into a weighing mechanism by adopting a water absorbing material feeding mechanism, conveying the weighed water absorbing material into a vibrating screen water absorbing material receiving mechanism, and uniformly conveying the water absorbing material into a vibrating dusting mechanism, so that the water absorbing material is uniformly scattered on the surface and/or in gaps of the fluffy material.

Further, the running speed of the vibration dusting mechanism is 20-500 m/min, preferably 50-450 m/min.

Further, the vibration amplitude of the vibration dusting mechanism is 15-800 mm, preferably 30-300 mm, and the vibration frequency is 3-40 times per second, preferably 5-30 times per second.

In a preferred embodiment, the manufacturing method comprises: adopt vacuum adsorption formula dusting system will water-absorbing material unreels simultaneously in one on line or at least two on the compound absorbs the main part between the main part, wherein, vacuum adsorption formula dusting system includes: the water-absorbing material feeding mechanism, the weighing mechanism and the forming cavity forming mechanism are internally provided with vacuum adsorption.

Further, the manufacturing method specifically comprises the following steps: the water absorbing material feeding mechanism is adopted to convey the water absorbing material into the weighing mechanism, then the weighed water absorbing material is conveyed into the forming cavity forming mechanism, the composite absorbing main body moves around the forming cavity forming mechanism, and therefore the water absorbing material is uniformly adsorbed on the surface and/or in gaps of the fluffy material while being scattered into the forming cavity forming mechanism.

Further, the running speed of the vacuum adsorption type powder scattering system is 20-500 m/min, and preferably 50-450 m/min.

In a preferred embodiment, the manufacturing method comprises: adopt stamp formula dusting system will water-absorbing material unreels simultaneously in one on line or at least two on the compound absorbs the main part between the main part, wherein, stamp formula dusting system includes: water-absorbing material feeding mechanism, weighing mechanism and impression mechanism.

Further, the manufacturing method specifically comprises the following steps: and conveying the water absorbing material into a weighing mechanism by adopting a water absorbing material feeding mechanism, and conveying the weighed water absorbing material into a stamping mechanism, so that the water absorbing material is uniformly scattered on the surface and/or in gaps of the fluffy material.

Further, the running speed of the stamping mechanism is 20-500 m/min, preferably 50-450 m/min.

In one embodiment, the manufacturing method further comprises: before or after the water absorbing material is broadcast, C-shaped wrapping, O-shaped wrapping or surface attaching treatment is carried out on the water absorbing material by adopting a wrapping material.

Further, the wrapping material includes a hydrophilic non-woven fabric, but is not limited thereto.

In one embodiment, the first skin layer is a skin-contacting front layer and the second skin layer is a skin-noncontacting back layer.

Further, the first surface layer may include a spunmelt nonwoven fabric, a spunbond nonwoven fabric, a spunlace nonwoven fabric, a hot air nonwoven fabric, or a dust-free paper, but is not limited thereto, and the thickness of the first surface layer is 20 to 500 μm.

Further, the second surface layer may include a spunmelt nonwoven fabric, a spunbond nonwoven fabric, a spunlace nonwoven fabric, a hot air nonwoven fabric, or a dust-free paper, but is not limited thereto, and the thickness of the second surface layer is 20 to 500 μm.

In another aspect of the present invention, the present invention relates to a light, thin and flexible absorbent body manufactured by the above method.

Preferably, the light, thin, soft absorbent body includes:

a first surface layer which is a front surface layer contacting the skin;

Further, the water absorbing material is distributed on one composite absorption body or between at least two composite absorption bodies.

Further, the absorbent body includes a front sheet disposed on the skin-facing side, a back sheet disposed on the non-skin-facing side, and a composite absorbent body disposed between the front sheet and the back sheet; the absorber is light, thin and soft, and mainly comprises fluffy materials such as fluffy non-woven fabrics, so that the water-absorbing polymers can be spread on the absorber manufacturing equipment on line.

Further, the fluffy material and the liner material are compounded to realize online unreeling.

Further, the thickness of the light, thin and soft absorber is 0.1-15 mm, preferably 0.3-10 mm.

Correspondingly, the invention also provides application of the light, thin and soft absorber in the field of preparing sanitary care products.

Correspondingly, the invention further provides a sanitary care product which comprises the light, thin and soft absorber.

By the technical scheme, the fluffy cotton is attached with the carrier to enhance the strength of the fluffy cotton, the fluffy characteristic of the fluffy cotton is kept, and then the fluffy cotton is directly used in the production lines of finished products such as baby diapers, paper diapers, pull-ups, adult incontinence products, women sanitary napkins, pads and the like, and water absorbing materials such as water absorbing powder and the like are scattered on line, so that various different absorbing structures can be realized, the transportation cost is reduced, the production efficiency of the core body is improved, and the production cost of the product is comprehensively reduced.

The method for manufacturing the light, thin and soft absorber integrally with the finished product on line provided by the invention is to directly manufacture the absorbing core body on a production line of the sanitary product, thereby avoiding the influence of external production and transportation conditions on the quality of the core body, improving the stability of the absorbing performance of the product, and realizing various different water absorbing powder scattering and distribution modes, thereby realizing the thinness and softness of the core body and obviously improving the performance.

The technical solutions in the embodiments of the present invention will be described in detail below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

Referring to fig. 1-4, which are schematic structural views of a light, thin and soft absorbent body according to a preferred embodiment of the present invention, fig. 1 is a fluffy nonwoven fabric with a gram weight of 18 to 150g/m²Of 25 to 100g/m, in particular²The fluffy non-woven fabric is more economical and effective, loose connection exists between fibers on the fluffy non-woven fabric, and a gap is formed in the middle, so that water absorbing powder particles enter in a space, but the connection between the fibers is loose, so that the strength of the fluffy material is not large, fig. 2 shows a composite medium of the fluffy non-woven fabric and a liner material, which can be glue or other mechanical pressing, ultrasonic waves and other composite modes, fig. 3 shows the liner material, which can be various types of non-woven fabric materials, and is selected according to the product performance requirements, and fig. 4 shows the fluffy non-woven fabric and the liner material after being compounded.

The strength of the compounded material is greatly improved relative to fluffy non-woven cloth, so that the material can meet the requirement of deep processing on high-speed equipment.

The composite material can be packaged in a winding mode, a spindle mode, a box mode and the like.

In this embodiment, a method for manufacturing a light, thin and soft absorber on-line and integrally with a finished product includes the following steps:

1. slitting

The composite body of fluffy non-woven fabric and liner non-woven fabric or silk thread designed by the invention can be pre-cut into required width by a splitting machine according to production arrangement, and can also realize on-line splitting, namely, a splitting device at the front section of a paper diaper production line is directly split into small rolls with required size from a large roll, so that flexible core body width is provided for paper diaper design, and meanwhile, the splitting device can provide materials for a plurality of paper diaper production lines.

The method specifically comprises the following steps: the fluffy non-woven fabric on the mother roll is compounded with the liner non-woven fabric in a compounding mode of gluing or pressing, ultrasonic waves and the like, then different widths are cut according to the width of the required material, the commonly used width is 70-160 mm, the commonly used width is 80-120 mm, and the cutting can be realized on the absorber equipment as required to be integrally cut or be separately cut off line.

If slit separately off-line, the material can be wound differently: winding, spindles, boxes, etc., which are more economical.

2. Water-absorbing powder dusting process

The dusting process can be compatible with various different types of water-absorbing polymer materials and can be matched with different design requirements

2.1 vibrating screen dusting method

As shown in fig. 6, a vibration type absorbent powder spreading mode is introduced, and absorbent powder can be added to fluffy cotton in a vibration mode.

The length of the vibrating screen is designed by using vibrating screen type powder scattering equipment according to the running speed of the paper diaper equipment, and meanwhile, the vibration amplitude and frequency in production are controlled according to the amount of the water absorbing powder required to be added in the production of specific products, so that the addition amount of the water absorbing powder required by the specification is reached.

The vibrating screen type dusting equipment mainly comprises a water-absorbing polymer feeding mechanism, a weighing and conveying mechanism, a vibrating screen water-absorbing polymer receiving mechanism and a vibrating screen vibrating dusting mechanism.

The feeding mechanism conveys the water-absorbing polymer out of the packaging bag and prepares to enter the next weighing mechanism.

The weighing mechanism weighs the water-absorbing polymer conveyed by the feeding mechanism, the feeding mechanism stops feeding after the weight or the volume reaches a set value, and the weighing mechanism simultaneously conveys the polymer material to the vibrating screen receiving mechanism according to the amount required by the product specification and the speed of a machine. When the high molecular weight in the weighing mechanism approaches the lower limit, the feeding mechanism begins to re-feed the high molecular weight to the weighing mechanism.

The vibrating screen hydroscopic polymer receiving mechanism receives the hydroscopic polymers conveyed by the weighing mechanism and uniformly conveys the polymers to the vibrating dusting mechanism.

The vibrating powder scattering mechanism can be adjusted according to the width difference of the absorber, the speed is also adjusted according to the speed of the host machine, so that the quantitative high polymer requirement of the machine running direction area is met, and the uniform or local non-uniform configuration can be realized in the vertical direction.

The powder scattering mechanism can be matched with the equipment from low speed to high speed (20m/min to 500m/min), especially 50m/min to 450 m/min.

2.2 vacuum adsorption type dusting method

As shown in fig. 5, a vacuum adsorption broadcasting mode is introduced, wherein fluffy cotton is wound on a drum, and water-absorbing powder passes through a forming cavity and then is adsorbed and broadcasted on the fluffy cotton. This mode uses the design of shaping chamber, and whole system includes hydroscopicity polymer feed mechanism, weighs conveying mechanism, becomes constitutions such as shaping chamber forming mechanism, and fluffy non-woven fabrics is through encircleing the shaping chamber, receives the hydroscopicity polymer in the fluffy non-woven fabrics.

Weighing the water-absorbing polymer conveyed by the feeding mechanism by the weighing mechanism, stopping feeding by the feeding mechanism after the weight or the volume reaches a set value, and simultaneously conveying the polymer material to the forming cavity by the weighing mechanism according to the amount required by the product specification and the speed of a machine. When the high molecular weight in the weighing mechanism approaches the lower limit, the feeding mechanism begins to re-feed the high molecular weight to the weighing mechanism.

The fluffy non-woven fabrics and the liner non-woven fabrics after being compounded move around the forming cavity, vacuum adsorption is arranged in the forming cavity, and the quantitative macromolecules conveyed by the weighing mechanism are broadcasted and adsorbed on the fluffy non-woven fabrics through the movement in the forming cavity.

The shape, the length, the width and the like of the forming template in the forming cavity can be designed according to the product requirements.

The vacuum adsorption type dusting mode can be matched from low speed to high speed (20m/min to 500m/min), especially 50m/min to 450 m/min.

The molding equipment can be used for a cotton core molding system, and the scrappage of the equipment is reduced.

2.3 stamping type dusting method

As shown in fig. 7, a stamping method is described to spread the absorbent powder on the fluffy cotton. The mode adopts a stamping mode, and the whole system comprises a water-absorbing polymer feeding mechanism, a weighing and conveying mechanism, a stamping mechanism and the like.

The weighing mechanism weighs the water-absorbing polymer conveyed by the feeding mechanism, the feeding mechanism stops feeding after the weight or the volume reaches a set value, and the weighing mechanism simultaneously conveys the polymer material to the stamping mechanism according to the amount required by the product specification and the speed of the machine. When the high molecular weight in the weighing mechanism approaches the lower limit, the feeding mechanism begins to re-feed the high molecular weight to the weighing mechanism.

The stamping mechanism receives the water-absorbing polymer and broadcasts the quantitative polymer into the fluffy non-woven fabric by matching the machine speed.

The die printing mechanism can meet the product size requirement by replacing the die plate according to the design.

The overprint dusting can be matched from low to high speeds (20 to 500m/min), especially 50 to 450 m/min.

3. Package

Before or after the water-absorbing polymer broadcasting station, the hydrophilic non-woven fabric is used for wrapping the absorbing body in a C shape or an O shape or only adhering the surface of the absorbing body. Therefore, the water-absorbing polymer is wrapped in the core body, and the problem of leakage is avoided.

After the water-absorbing polymer is broadcast, the water-absorbing polymer is compounded with the hydrophilic non-woven fabric and wrapped, and the next process of the product is carried out.

4. Preparation of Disposable absorbent

After the water-absorbing polymer is broadcast and the core body is wrapped, the product is cut according to the design size of the product and is compounded with other materials of the disposable absorber, such as a skin-contacting front layer, a skin-non-contacting back layer and the like, and the preparation of the disposable absorber product is finished.

The technical solution of the present invention is further described in detail by the following examples. However, the examples are chosen only for the purpose of illustrating the invention and are not to be construed as limiting the scope of the invention.

Example 1

The specific manufacturing method comprises the following steps: as shown in fig. 4, the composite fluffy absorbent material is formed by combining three materials shown in fig. 1-3, the materials are cut into 80 mm corresponding widths, then the cut materials are conveyed to a production line of disposable absorbent products, the materials are unreeled by an unreeling mechanism of equipment, the materials can run at the same speed with other materials of a machine, the set speed can be 50 meters per minute, the unreeled materials surround a forming drum shown in fig. 5, the forming drum is attached with vacuums in different areas to assist in spreading the water-absorbent polymer material, the water-absorbent polymer material enters the forming drum through the upper layer of the forming drum, and enters the fluffy absorbent material shown in fig. 4 under the vacuum action of the different areas of the forming drum, so that the absorbent is formed, and the water-absorbent polymer material is set to be 0.2 gram per product.

After the absorber is formed by the forming drum, the absorber is compounded with wrapping non-woven fabrics, and the non-woven fabrics are wrapped by the C-shaped form, so that the water-absorbing polymer is prevented from leaking out of the absorber;

after being compositely wrapped with wrapping non-woven fabrics, the fabric is composited with the front surface layer and the back surface layer; the resulting absorber thickness was only 0.1 mm;

then the whole composite material is combined with other corresponding functional materials according to the product characteristics, so that the manufacturing of the disposable sanitary nursing product is completed;

the cost of this embodiment is reduced by 20% compared to using a prefabricated composite core.

Example 2

The specific manufacturing method comprises the following steps: as shown in fig. 4, the composite fluffy absorbent material is formed by combining three materials shown in fig. 1-3, the materials are cut into 120mm pieces with corresponding widths, then the cut materials are conveyed to a production line of disposable absorbent products, the materials are unreeled by an unreeling mechanism of equipment, the materials can run at the same speed with other materials of a machine, the set speed can be 100 m/min, the unreeled materials surround a forming drum shown in fig. 5, the forming drum is attached with vacuums in different areas to assist the scattering of the water-absorbent polymer material, the water-absorbent polymer material enters the forming drum through the upper layer of the forming drum, and enters the fluffy absorbent material shown in fig. 4 under the vacuum action of the different areas of the forming drum, so that the absorbent is formed, and the water-absorbent polymer material is set to be 100g per piece of product.

after being compositely wrapped with wrapping non-woven fabrics, the fabric is composited with the front surface layer and the back surface layer; the resulting absorber thickness was only 10 mm;

the cost of this embodiment is reduced by 28% compared to using a prefabricated composite core.

Example 3

The specific manufacturing method comprises the following steps: as shown in fig. 4, the composite fluffy absorbent material is made by combining three materials as shown in fig. 1-3, the composite fluffy absorbent material is cut into 70 mm corresponding width, then the cut material is put on a production line of disposable absorbent products, the material is unreeled by an equipment unreeling mechanism, the material can run at the same speed with other materials of a machine, the speed can be 400 m/min, the unreeled material is flatly paved below an oscillating type powder sprinkling mechanism shown in fig. 6, after the water-absorbing high polymer material is fed on the oscillating type powder sprinkling mechanism, the water-absorbing high polymer material is fed according to the addition amount, the discharge port of the oscillating mechanism sets the discharge amount according to the running speed of the machine, the amplitude and the frequency of the oscillating mechanism are set according to the product length and the machine speed, preferably the amplitude is 15mm, the frequency is 40 times per second, so that the corresponding amount of the water-absorbing high polymer material can be continuously and stably sprinkled into the fluffy absorbent material shown in fig. 4, the addition amount of the water-absorbing high polymer material is 10g per sheet of product,

after the fluffy absorbing material is added with the water-absorbing high polymer material through the oscillating mechanism, the fluffy absorbing material is compounded with the coated non-woven fabric material, and the material is wrapped by C so as to avoid the water-absorbing high polymer material from leaking;

after being compositely wrapped with wrapping non-woven fabrics, the fabric is composited with the front surface layer and the back surface layer; the resulting absorber had a thickness of 2.2 mm;

by comprehensive calculation, the manufacturing cost of the embodiment can be reduced by 22%.

Example 4

The specific manufacturing method comprises the following steps: as shown in fig. 4, the composite fluffy absorbent material is made by combining the three materials shown in fig. 1-3, cutting the materials into 160mm corresponding width, feeding the cut materials to the production line of the disposable absorbent product, unwinding the materials by the unwinding mechanism of the device, feeding the materials on the unwinding mechanism at the same speed as other materials of the machine, wherein the speed can be 400 m/min, the unwound materials are flatly paved below the oscillating powder spraying mechanism shown in fig. 6, feeding the water-absorbing polymer material on the oscillating powder spraying mechanism, feeding a fixed amount of the water-absorbing polymer material according to the addition amount, setting the discharge amount of the discharge port of the oscillating mechanism according to the running speed of the machine, setting the amplitude and frequency of the oscillating mechanism according to the product length and the machine speed, preferably setting the amplitude at 800mm, and the frequency at 3 times per second, thereby continuously and stably scattering the corresponding amount of the water-absorbing polymer material into the fluffy absorbent material shown in fig. 4, the addition amount of the water-absorbing high polymer material is 18 g per sheet of product,

after being compositely wrapped with wrapping non-woven fabrics, the fabric is composited with the front surface layer and the back surface layer; the resulting absorbent body had a thickness of only 3 mm;

by comprehensive calculation, the manufacturing cost of the embodiment can be reduced by 26%.

In conclusion, according to the technical scheme of the invention, the thin and soft absorber is manufactured on the whole product in an online production mode, so that the thin and soft absorber can be manufactured on line, the effect of obviously reducing the overall cost is achieved, the distribution of various types of water-absorbing materials is realized, the product performance is further improved, and the continuous and healthy development of the whole industry is facilitated.

In addition, the present inventors have also made experiments under other conditions and the like listed in the present specification with reference to the above embodiments, and have achieved similar technical effects to those of the foregoing embodiments.

It should be understood that the above-mentioned embodiments are merely illustrative of the technical concepts and features of the present invention, which are intended to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and therefore, the protection scope of the present invention is not limited thereby. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. An on-line and finished product integrated manufacturing method of a light, thin and soft absorber is characterized by comprising the following steps:

the method comprises the following steps of unreeling a water absorbing material on line and simultaneously broadcasting the water absorbing material on one or at least two composite absorbing main bodies in a vacuum adsorption, oscillation, pressing or stamping mode through a mode of online production together with a sanitary care product, and enabling the water absorbing material to be uniformly distributed on the surface and in gaps of a fluffy material, and then combining the water absorbing material with a wrapping material; and the number of the first and second groups,

respectively arranging a first surface layer and a second surface layer on the first surface and the second surface of the obtained composite absorption main body to obtain a light, thin and soft absorption body, wherein the first surface and the second surface are arranged oppositely;

the thin, light and soft absorbent body includes:

a first surface layer which is a front surface layer contacting the skin;

the composite absorption body is arranged between the first surface layer and the second surface layer, the composite absorption body is provided with a first surface and a second surface, the first surface and the second surface are arranged oppositely, the first surface layer is attached to the first surface, the second surface layer is attached to the second surface, the composite absorption body comprises a fluffy material and a liner material which are mutually combined and provided with gaps, and water absorption materials are uniformly distributed on the surface of the fluffy material and in the gaps.

2. The method of manufacturing according to claim 1, wherein: the fluffy material is fluffy non-woven fabric, and the gram weight of the fluffy non-woven fabric is 18-150 g/m²。

3. The method of manufacturing according to claim 2, wherein: the bulky non-woven fabric has a gram weight of 25-100 g/m²。

4. The method of manufacturing according to claim 1, wherein: the liner material is liner non-woven fabric or silk thread.

5. The method of manufacturing according to claim 4, wherein: grammage of the nonwoven fabric matIs 6 to 80g/m²。

6. The method of manufacturing according to claim 5, wherein: the gram weight of the non-woven fabric liner is 8-25 g/m²。

7. The method of manufacturing according to claim 4, wherein: the backing nonwoven fabric is selected from a spunmelt nonwoven fabric, a spunbond nonwoven fabric, a spunlace nonwoven fabric or a dust-free paper.

8. The method of manufacturing according to claim 1, comprising: and compounding the fluffy material and the liner material by adopting a glue laminating, ultrasonic wave, hot pressing or cold pressing mode.

9. The method of manufacturing of claim 1, further comprising: and cutting the composite absorption main body, wherein the cutting width is 70-160 mm.

10. The method of manufacturing according to claim 9, wherein: the width of cutting is 80 ~ 120 mm.

11. The method of manufacturing according to claim 9, wherein: the slitting is selected from integral slitting or offline independent slitting, and when the offline independent slitting is performed, the composite absorption main body is in a winding type package, a spindle type package or a box type package.

12. The method of manufacturing according to claim 11, wherein: the composite absorption main body is packaged in a box type.

13. The method of manufacturing according to claim 1, wherein: the water absorbing material is selected from absorbent polymer material and/or absorbent wood pulp material.

14. The method of manufacturing according to claim 13, wherein: the water absorbing material is in a powder shape.

15. The method of manufacturing according to claim 1, wherein: the online unreeling speed is 50-800 m/min.

16. The method of manufacturing according to claim 15, wherein: the online unreeling speed is 80-600 m/min.

17. The method of manufacturing according to claim 1, wherein: the mass of the water absorbing material scattered on each composite absorption main body is 0.2-100 g.

18. The method of manufacturing according to claim 1, comprising: adopt shale shaker formula dusting system will water-absorbing material unreels simultaneously in one on line or at least two in the combined absorption main part between the combined absorption main part, wherein, shale shaker formula dusting system includes: the device comprises a water absorbing material feeding mechanism, a weighing mechanism, a vibrating screen water absorbing material receiving mechanism and a vibrating dusting mechanism.

19. The manufacturing method according to claim 18, specifically comprising: conveying the water absorbing material into a weighing mechanism by using a water absorbing material feeding mechanism, conveying the weighed water absorbing material into a vibrating screen water absorbing material receiving mechanism, and uniformly conveying the water absorbing material into a vibrating dusting mechanism, so that the water absorbing material is uniformly scattered on the surface and in gaps of the fluffy material; the operation speed of the vibration dusting mechanism is 20-500 m/min, the vibration amplitude of the vibration dusting mechanism is 15-800 mm, and the vibration frequency is 3-40 times per second.

20. The method of manufacturing of claim 19, wherein: the operation speed of the vibration dusting mechanism is 50-450 m/min, the vibration amplitude of the vibration dusting mechanism is 30-300 mm, and the vibration frequency is 5-30 times per second.

21. The method of manufacturing according to claim 1, comprising: adopt vacuum adsorption formula dusting system will water-absorbing material unreels simultaneously in one on line or at least two on the compound absorbs the main part between the main part, wherein, vacuum adsorption formula dusting system includes: the water-absorbing material feeding mechanism, the weighing mechanism and the forming cavity forming mechanism are internally provided with vacuum adsorption.

22. The manufacturing method according to claim 21, specifically comprising: conveying the water absorbing material into a weighing mechanism by adopting a water absorbing material feeding mechanism, conveying the weighed water absorbing material into a forming cavity forming mechanism, and enabling the composite absorbing main body to move around the forming cavity forming mechanism, so that the water absorbing material is uniformly adsorbed on the surface and in gaps of the fluffy material while being broadcast into the forming cavity forming mechanism; the running speed of the vacuum adsorption type powder scattering system is 20-500 m/min.

23. The method of manufacturing of claim 22, wherein: the running speed of the vacuum adsorption type powder scattering system is 50-450 m/min.

24. The method of manufacturing according to claim 1, comprising: adopt stamp formula dusting system will water-absorbing material unreels simultaneously in one on line or at least two on the compound absorbs the main part between the main part, wherein, stamp formula dusting system includes: water-absorbing material feeding mechanism, weighing mechanism and impression mechanism.

25. The manufacturing method according to claim 24, specifically comprising: conveying the water absorbing material into a weighing mechanism by adopting a water absorbing material feeding mechanism, and conveying the weighed water absorbing material into a stamping mechanism, so that the water absorbing material is uniformly scattered on the surface and in gaps of the fluffy material; the running speed of the stamping mechanism is 20-500 m/min.

26. The method of manufacturing of claim 25, wherein: the running speed of the stamping mechanism is 50-450 m/min.

27. The method of manufacturing according to claim 1, comprising: before or after the water absorbing material is broadcast, C-shaped wrapping, O-shaped wrapping or surface attaching treatment is carried out on the water absorbing material by adopting a wrapping material; the wrapping material is hydrophilic non-woven fabric.

28. The method of manufacturing according to claim 1, wherein: the first surface layer is selected from spun-bonded non-woven fabric, spunlace non-woven fabric, hot-air non-woven fabric or dust-free paper.

29. The method of manufacturing according to claim 1, wherein: the thickness of the first surface layer is 20-500 mu m.

30. The method of manufacturing according to claim 1, wherein: the second surface layer is selected from spun-bonded non-woven fabric, spunlace non-woven fabric, hot-air non-woven fabric or dust-free paper.

31. The method of manufacturing according to claim 1, wherein: the thickness of the second surface layer is 20-500 mu m.

32. The method of manufacturing according to claim 1, wherein: the thickness of the light, thin and soft absorber is 0.1-15 mm.

33. The method of manufacturing of claim 32, wherein: the thickness of the light, thin and soft absorber is 0.3-10 mm.

34. Use of a thin, light and flexible absorbent body made by the method of any one of claims 1 to 33 in the field of the manufacture of sanitary care products.

35. Use according to claim 34, characterized in that: the sanitary care product is selected from baby diapers, baby pull-ups, adult incontinence products, feminine sanitary napkins or pantiliners.

36. A sanitary care product characterized by comprising a thin, flexible absorbent body made by the method of any one of claims 1-33.

37. The sanitary care article according to claim 36, wherein: the sanitary care product is selected from baby diapers, baby pull-ups, adult incontinence products, feminine sanitary napkins or pantiliners.