CN103948471B - The manufacture method of absorptive core, absorptive core former and absorptive core - Google Patents
The manufacture method of absorptive core, absorptive core former and absorptive core Download PDFInfo
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- CN103948471B CN103948471B CN201410176570.6A CN201410176570A CN103948471B CN 103948471 B CN103948471 B CN 103948471B CN 201410176570 A CN201410176570 A CN 201410176570A CN 103948471 B CN103948471 B CN 103948471B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
- A61F13/534—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/15577—Apparatus or processes for manufacturing
- A61F13/15707—Mechanical treatment, e.g. notching, twisting, compressing, shaping
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/15577—Apparatus or processes for manufacturing
- A61F2013/15821—Apparatus or processes for manufacturing characterized by the apparatus for manufacturing
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
- A61F2013/530131—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium being made in fibre but being not pulp
- A61F2013/530379—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium being made in fibre but being not pulp comprising mixtures of fibres
- A61F2013/530423—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium being made in fibre but being not pulp comprising mixtures of fibres having different densities
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- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Heart & Thoracic Surgery (AREA)
- Epidemiology (AREA)
- Biomedical Technology (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Absorbent Articles And Supports Therefor (AREA)
Abstract
The present invention relates to absorbent article and automated production equipment manufacture field, disclose a kind of absorptive core, comprise absorptive core top layer, absorptive core intermediate layer and absorptive core bottom, the tightness degree of described absorptive core intermediate layer and absorptive core bottom is greater than the tightness degree on absorptive core top layer.The invention also discloses the former and manufacture method that manufacture above-mentioned absorptive core.In the top layer of absorptive core of the present invention, intermediate layer, bottom, the gathereding degree of fluff pulp fibers is to fine and close by relative loose, density gradient formula designs, can absorb body fluid fast, and ooze under being beneficial to liquid, effectively reducing absorbent article leakage of body fluid may.This structure of absorptive core during fabrication, is effectively avoided polymeric absorbent resin particle to block forming screens, is saved cleaning, safeguards forming screens time and cost, improves absorptive core shaped device production efficiency further.
Description
Technical field
The present invention relates to the manufacture method that absorbent article and automated production equipment manufacture field, particularly a kind of absorptive core, absorptive core former and absorptive core.
Background technology
The liquid permeability top layer that the absorbent article such as sanitary towel, diaper is generally used with contact skin by main, non-skin contact the layer of structure such as liquid-tight bottom, absorptive core layer between liquid permeability top layer and liquid-tight bottom used and form.Wherein absorptive core layer mainly has the function of absorption, storage, pinning body fluid, is the key structure level weighing absorbent article absorbent properties quality.
Absorptive core layer is generally designed with structure distribution according to a certain percentage by hygroscopicity fibre and polymeric absorbent resin particle, at present, the fine molding mode of common absorbent cores volume is primarily of following two kinds: (1) upper strata: hygroscopicity fibre (or simultaneously containing a small amount of polymeric absorbent resin), intermediate layer: hygroscopicity fibre/polymeric absorbent resin particle Homogeneous phase mixing, bottom: hygroscopicity fibre, carry out long-pending fine molding with three-decker distribution, be commonly called as " sandwich " mixed type absorptive core.(2) upper strata: hygroscopicity fibre/polymeric absorbent resin Homogeneous phase mixing, lower floor: hygroscopicity fibre, substantially with single layer structure Homogeneous phase mixing distribution design, forms " evenly " mixed type absorptive core by long-pending fibre.
Above two kinds of long-pending fine molding modes have a common ground, polymeric absorbent resin particle (or a small amount of polymeric absorbent resin particle) is all contained on the upper strata of absorptive core substantially, by following benefit from the instructions for use of the absorbent article such as sanitary towel, diaper: in the top layer of (1) absorptive core, to mix with hygroscopicity fibre containing a small amount of polymeric absorbent resin particle and have certain promotion to absorbent article is dry-ness; (2), along with the development of the absorbent article such as sanitary towel, diaper ultrathin typeization, in absorptive core, the ratio of SAP has exceeded 50%, even reach 60-70%, a certain amount of polymeric absorbent resin particle is contained on absorber top layer, favourable guarantee is provided to intermediate layer or lower floor's hygroscopicity fibre/polymeric absorbent resin particle Homogeneous phase mixing, if whole polymeric absorbent resin particles is all distributed in intermediate layer or lower floor, expand after adding the imbibition of polymeric absorbent resin particle, the probability producing " gel blockage " increases greatly.
But, this brings new problem also to the fine shaped device of absorbent cores volume, because absorptive core top layer is normally formed by the bottom demoulding in the fine screen cloth shaping mould of absorbent cores volume, if screen cloth shaping mould bottom contains a certain amount of polymeric absorbent resin particle, easily cause in polymeric absorbent resin to leak in screen cloth and run off, and have a sizable part to be trapped on forming screens, cause the waste of hydroscopic high-molecular resin on the one hand, increase production cost; Cause hydroscopic high-molecular resin to block the mesh of forming screens on the other hand, not only affect the molding of absorptive core, and bring certain difficulty to the cleaning of screen cloth.Although by changing the design of forming screens, can such as change the bore size of forming screens, percent opening and absorption negative pressure of vacuum value.But these can not solve the problem such as leakage, waste of polymeric absorbent resin particle completely.As everyone knows, in piece of paper diaper product, the weight of polymeric absorbent resin particle accounts for whole diaper product weight about 30%, if in piece of paper diaper product, often waste 0.1g polymeric absorbent resin particle, calculate with the baby paper diaper production equipment that an output is 500 slices/minute, namely can be diaper manufacturer every year to save polymeric absorbent resin particle and increase consumption: 0.1g × 500 slice/minute × 60 minutes × 24 hours × 350 days=25200kg, cause the leakage of polymeric absorbent resin particle therefrom, waste can not be ignored.
In addition, absorptive core primarily of through pulverizing Time of Fluff Slurry single fiber and polymeric absorbent resin particle in long-pending fine chamber, rely on assembly drum negative-pressure adsorption in space screen net forming mould, then the absorptive core of certain three-dimensional thickness is formed through the demoulding, due to the fluff pulp fibers of adsorbing bottom shaping mould, the atmospheric pressure value just having started to be subject to is more stable, the absorptive core of molding is finer and close, more up, i.e. shaping mould upper strata, while absorption, be subject to the impact of Time of Fluff Slurry/polymeric absorbent resin layer thicknesses that shaping mould gathers above, the absorptive core compactness on shaping mould upper strata is poor, and each layer of structure of the absorptive core formed after the demoulding presents: upper strata is finer and close, lower floor loosely, from the angle absorbing body fluid speed, be unfavorable for the quick absorption of liquid like this, body fluid absorption is excessively slow, ooze under being unfavorable for liquid, the probability increasing leakage of body fluid just strengthens.Thus affect the use of absorbent article.
Summary of the invention
The object of the invention is to solve the problems of the technologies described above, the manufacture method of absorptive core, absorptive core former and absorptive core is provided, to reducing the leakage possibility of absorptive core top layer polymeric absorbent resin particle, and absorptive core shaped device production efficiency can be improved.
The technical scheme that the present invention takes is:
A kind of absorptive core; comprise absorptive core top layer, absorptive core intermediate layer and absorptive core bottom; it is characterized in that; described absorptive core top layer is a certain amount of fluff pulp fibers and a small amount of polymeric absorbent resin particle mixture; described absorptive core intermediate layer is the mixture of a large amount of fluff pulp fibers and a large amount of polymeric absorbent resin particle; described absorptive core bottom is a certain amount of fluff pulp fibers, and the tightness degree of described absorptive core intermediate layer and absorptive core bottom is greater than the tightness degree on absorptive core top layer.
Further, the density of described absorptive core intermediate layer and absorptive core bottom is 1.0-2.5g/cm
3, the density on absorptive core top layer is 0.5-1.8g/cm
3.
Further, the thickness of described absorptive core top layer and absorptive core bottom is all less than the thickness in absorptive core intermediate layer, the weight on described absorptive core top layer is the 5-20% of whole absorptive core weight, the weight in described absorptive core intermediate layer is the 60-90% of whole absorptive core weight, and the weight of described absorptive core bottom is the 5-20% of whole absorptive core weight.
Further, the top layer of described absorptive core and the clad of bottom are an entirety, are formed through the coated PUR bonding of doubling.
Further, the top layer of described absorptive core and the clad of bottom are two-layer up and down, and the side of levels clad is bonded by PUR.
A kind of former of absorptive core, it is characterized in that, comprise long-pending fine chamber, long-pending fine drum, gear unit, clad material supply unit, buanch unit and backer roll unit, described long-pending fibre drum is divided into high air draught district, low air draught district and blowing district, described long-pending fibre drum is provided with shaping mould, the rear end in described long-pending fine chamber is arranged on the side of the shaping mould in described high air draught district, seal between the shaping mould in described long-pending fine chamber and described high air draught district, the front end in described long-pending fine chamber arranges fluff pulp fibers conveyer device, polymeric absorbent resin particle feed dissemination apparatus and tongue component, described polymeric absorbent resin particle feed dissemination apparatus is positioned at the front of described tongue component in described long-pending fibre drum rotation direction, described fluff pulp fibers conveyer device is positioned at the upper end of described tongue component, described long-pending fine chamber is by the molding on the shaping mould of described long-pending fibre drum of absorptive core material, after described long-pending fibre drum rotates clockwise and joins with described clad material supply unit under motor drives, the core material demoulding on described shaping mould transports at described clad material supply unit and scribbles on the clad material of PUR, after the compacting of described backer roll unit, absorptive core is formed again after described core material is turned over turnback by described buanch unit.
Further, described buanch unit is several transferring rollers, several transferring rollers described make the transmission direction of described core material reverse, the upper-lower position of core material is made to realize 180 degree of upsets, vacuum tank transporter, absorptive core pressue device and absorptive core packing unit is also provided with between described long-pending fibre drum and described buanch unit, after described vacuum tank transporter and absorptive core pressue device carry out preliminary consolidation to core material, then through described absorptive core packing unit, described clad material is carried out packing to described core material.
Further, described buanch unit is vacuum transfer drum, and described vacuum transfer roller makes the transmission direction of described core material reverse, makes the upper-lower position of core material realize 180 degree of upsets, described clad material supply unit is two, is separately positioned on the both sides of described vacuum transfer drum.
Further, described backer roll unit is made up of upper and lower two rollers, and top roll circumferential surface is coated with elastomer, and the circumferential surface of lower roll is rustless steel, and up-down rollers can be heated, heating temperature range 50--250 DEG C.
Further, the quantity of described tongue component is 1 to 2, and described tongue component can swing in certain amplitude.
Further, described clad material supply unit is provided with PUR applying unit, described PUR applying unit is coated with PUR on the upper strata of clad material.
Further, described long-pending fibre drum arranges barometric control unit.
Utilize the former of absorptive core to manufacture a method for absorptive core, comprise the steps:
(1) vacuum is inhaled to the high air draught district of described long-pending fibre drum, low air draught district, air pressure is applied to the blowing district of described long-pending fibre drum;
(2) long-pending fine drum is driven to rotate, by clad material supply unit input coating layer material; Described fluff pulp fibers conveyer device and polymeric absorbent resin particle feed dissemination apparatus export Time of Fluff Slurry and water absorbing resin particle; Described Time of Fluff Slurry adsorbs into core material with polymeric absorbent resin particle on the shaping mould in high air draught district, is sent to blowing district by low air draught district;
(3) core material on shaping mould is blown out the demoulding on coating layer material by the air pressure in described blowing district;
(4) described buanch unit overturns described core material;
(5) described backer roll unit forms absorptive core to core material compacting.
Further, described clad material supply unit is one, before described step (4), also comprise the step of described coating layer material being carried out to PUR bonding, packing.
Further, described clad material supply unit is two, while described step (4), carries out PUR bonding to two coating layer materials.
The invention has the beneficial effects as follows:
(1) in absorptive core top layer, in fluff pulp fibers, Homogeneous phase mixing has a certain amount of polymeric absorbent resin particle, ensure absorbent article use dry-ness while, the leakage greatly reducing absorptive core top layer polymeric absorbent resin particle may;
(2) this structure of absorptive core during fabrication, effectively avoids polymeric absorbent resin particle to block forming screens, save cleaning, safeguard forming screens time and cost, improves absorptive core shaped device production efficiency further;
(3) in the top layer of absorptive core, intermediate layer, bottom, the gathereding degree of fluff pulp fibers is to fine and close (namely low-density is to high density) by relative loose, density gradient formula designs, body fluid can be absorbed fast, and ooze under being beneficial to liquid, effectively reducing absorbent article leakage of body fluid may.
Accompanying drawing explanation
Accompanying drawing 1 is the cross section structure schematic diagram of the embodiment one of absorptive core of the present invention;
Accompanying drawing 2 is the cross section structure schematic diagram of the embodiment two of absorptive core of the present invention;
Accompanying drawing 3 is the structural representation of the embodiment one of former of the present invention;
Accompanying drawing 4 is the structural representation of the embodiment two of former of the present invention.
Being labeled as in accompanying drawing:
1. absorptive core; 2. absorptive core top layer;
3. absorptive core intermediate layer; 4. absorptive core bottom;
101. fluff pulp fibers; 102. absorb resin particle;
103. clad; 104. clad lower floors;
105. clad upper stratas; 11. long-pending fine chambeies;
12. belt unit; 13. polymeric absorbent resin particle feed dissemination apparatus;
14. tongue component; 15. shaping moulds;
16. long-pending fine drums; 17. barometric control units;
18. vacuum tank transporters; 19. presser unit;
20. packing unit; 21. transferring rollers;
22. backer roll unit; 23. clad material supply units;
24. PUR unit; 25. transfer drums;
26. heat-sealing rollers.
Detailed description of the invention
Elaborate below in conjunction with the detailed description of the invention of accompanying drawing to the manufacture method of absorptive core of the present invention, absorptive core former and absorptive core.
The embodiment one of absorptive core
See accompanying drawing 1, the structure of absorptive core 1 is mainly divided into three levels, the thin skin layer that absorptive core top layer 2 is made up of with a small amount of polymeric absorbent resin particle 102 Homogeneous phase mixing a certain amount of fluff pulp fibers 101, absorptive core intermediate layer 3 is made up of a large amount of fluff pulp fibers 101 and a large amount of polymeric absorbent resin particle 102 and evenly mixes the intervening slab formed, the thin bottom that absorptive core bottom 4 is made up of a certain amount of fluff pulp fibers 101.
The tightness degree that tightness degree is less than absorptive core intermediate layer 3, the fluff pulp fibers 101 of bottom 4 is combined with polymeric absorbent resin particle 102 Homogeneous phase mixing that wherein fluff pulp fibers 101 on absorptive core top layer is combined with polymeric absorbent resin particle 102 Homogeneous phase mixing.That is: absorptive core intermediate layer 3, bottom 4 be greater than absorptive core top layer 2 in conjunction with tightness degree.
The thickness on absorptive core top layer 2 is less than the thickness in absorptive core intermediate layer 3, and the thickness of absorptive core bottom 4 is less than the thickness in absorptive core intermediate layer 3; The weight on absorptive core top layer 2 is the 5-20% of whole absorptive core 1 weight, and the weight in absorptive core intermediate layer 3 is the 60-90% of whole absorptive core 1 weight, and the weight of absorptive core bottom 4 is the 5-20% of whole absorptive core 1 weight.
Absorptive core top layer 2 and absorptive core bottom 4 are carried out coated, clad 103 is an entirety, and clad 103 upper strata is coated with PUR, and, PUR bonding (figure do not mark) coated through doubling is formed.Absorptive core 1 is processed again, becomes the absorbent article finished product such as diaper, sanitary towel.
The embodiment two of absorptive core
The embodiment one of the present embodiment and absorptive core 1 is basically identical, its difference is the difference of clad 103, absorptive core top layer 2 covers clad upper strata 105, absorptive core bottom 4 covers clad lower floor 104, clad upper strata 105 and clad lower floor 104 are adhesively fixed (figure does not mark) by PUR with absorptive core top layer 2 and absorptive core bottom 4, and clad upper strata 105 and clad lower floor 104 overlapping sideways region all bond with PUR.
Absorptive core former embodiment one
Absorptive core former comprises long-pending fine chamber 11, long-pending fine drum 16, gear unit, clad material supply unit 23, buanch unit and backer roll unit 22 etc., gear unit selects belt unit 12 to carry out transmission, three districts are divided in long-pending fine drum 16, be respectively high air draught district (A district), low air draught district (B district) and blowing district (C district), long-pending fine drum 16 arranges barometric control unit 17, for regulating the air pressure in A, B, C district.Long-pending fine drum 16 is provided with shaping mould 15, the rear end in long-pending fine chamber 11 is arranged on the side of the shaping mould 15 in high air draught district, amass and seal between fine chamber 11 and the shaping mould 15 in high air draught district, the front end in long-pending fine chamber 11 arranges fluff pulp fibers conveyer device, polymeric absorbent resin particle feed dissemination apparatus 13 and tongue component 14, polymeric absorbent resin particle feed dissemination apparatus 13 is positioned at the front of tongue component 14 in long-pending fine drum 16 rotation direction, fluff pulp fibers conveyer device is positioned at the upper end of tongue component 14, tongue component 14 can be designed to one or two, arrange near the one or both sides near long-pending fine chamber 11 wall, thus long-pending fine chamber 11 is divided into two or three parts, absorptive core top layer 2 is adjusted by tongue component 14 pendulum angle, intermediate layer 3, the proportional amount of the polymeric absorbent resin of each layer of structure of bottom 4, in addition, the distribution situation of polymeric absorbent resin at each layer of structure can be carried out by regulating the distance at discharging gate and long-pending Xian Qiang 11 center in polymeric absorbent resin particle feed dissemination apparatus 13.
Long-pending fine chamber 11 rotates clockwise, the molding on the shaping mould 15 in long-pending fine drum 16 corresponding A district successively of absorptive core material, in the B district of correspondence by belt unit pressure holding, by the C district stripping forming of correspondence, long-pending fine drum 16 is after under motor drives, (figure does not indicate) and clad material supply unit 23 are joined, the core material demoulding on shaping mould 15 transports at clad material supply unit 23 and is coated with on the clad material of PUR, again after core material is turned over turnback by buanch unit, after backer roll unit 22 compacting, form absorptive core.Buanch unit is several transferring rollers 21, and it is reverse that several transferring rollers 21 make the transmission direction of core material transfer to, makes the upper-lower position of core material realize 180 degree of upsets.
Clad material supply unit 23 is provided with PUR unit 24, and PUR unit 24 is coated with PUR on clad material, PUR be used for clad material side between and bond between clad material and core material.
Vacuum tank transporter 18, absorptive core 1 presser unit 19 and absorptive core packing unit 20 is also provided with between long-pending fine drum 16 and transferring roller 21, after vacuum tank transporter 18 and absorptive core presser unit 19 pairs of core materials carry out preliminary consolidation, then through absorptive core packing unit 20, clad material is carried out packing to core material.Export coated good absorptive core through transferring roller 21 and be delivered to next manufacturing process through one group of backer roll unit 22 again, wherein backer roll unit 22 is made up of upper and lower two rollers, top roll circumferential surface is coated with elastomer, lower roll circumferential surface is through the metal steel rider of special handling, and up-down rollers can be heated, heating temperature range 50--250 DEG C.
The present embodiment is for the manufacture of absorptive core first embodiment.
The work process of the present embodiment is, first, the Time of Fluff Slurry single fiber that process is pulverized and polymeric absorbent resin particle, in long-pending fine chamber, rely on assembly drum negative-pressure adsorption fluff pulp fibers and polymeric absorbent resin particle to form two-layer or three-decker state according to predetermined design at space screen net forming mould.Before and after the process completing pressurization, cladding process, by certain to turn to, absorptive core carries out the upset of 180 degree by buanch unit, namely long-pending fine drum space screen net forming mould bottom is as the bottom of final absorptive core, long-pending fine drum space screen net forming mould intermediate layer is as the intermediate layer of final absorptive core, and long-pending fine drum space screen net forming mould top layer is as the top layer of final absorptive core.
The manufacture method step of the present embodiment is as follows:
(1) vacuum is inhaled to the high air draught district of long-pending fine drum 16, low air draught district, air pressure is applied to the blowing district of long-pending fine drum 16;
(2) drive long-pending fine drum 16 to rotate, input clad 103 material by clad material supply unit 23; Fluff pulp fibers conveyer device and polymeric absorbent resin particle feed dissemination apparatus 13 export Time of Fluff Slurry and water absorbing resin particle 102; Time of Fluff Slurry adsorbs into core material with water absorbing resin particle 102 on the shaping mould 15 in high air draught district, is sent to blowing district by low air draught district;
(3) core material on shaping mould 15 is blown out the demoulding on clad material by the air pressure in blowing district;
(4) by core material through vacuum tank delivery unit 18 and absorptive core presser unit 19 preliminary consolidation;
(5) core material through packing unit 20 by coated for clad 103 material;
(6) transferring roller 21 pairs of core materials overturn;
(7) the 22 pairs of core material compactings of backer roll unit form absorptive core 1.
Absorptive core former embodiment two
The present embodiment is the different of buanch unit from the difference of absorptive core former embodiment, its buanch unit is vacuum transfer drum 25, the inside convulsion of vacuum transfer drum 25 makes it form vacuum, by the core material absorption on vacuum transfer drum, vacuum transfer drum 25 makes the transmission direction of core material reverse, the upper-lower position of core material is made to realize 180 degree of upsets, clad material supply unit 23 is two, be separately positioned on the both sides of vacuum transfer drum 25, two clad material supply units 23 carry clad material upper strata 105 and clad material lower floor 104 respectively, two clad material supply units 23 supporting PUR unit 24 separately, the bonding for two cladding materials being carried out bond and between core material and two cladding materials of two PUR unit 24.
The present embodiment is for the manufacture of absorptive core second embodiment.
In the present embodiment, identical with the process of absorptive core former embodiment one before the core body demoulding, through the absorptive core of long-pending fine shaping and demoulding molding, the upper layer packets clad material 105 applying PUR with upstream is transmitted by vacuum and shifts absorptive core top layer 2 that drum 25 transmits and to bond compound, and the lower floor's clad material 104 applying PUR is shifted absorptive core lower floor 4 that drum 25 transmits and to bond compound with being transmitted by vacuum, then do compaction treatment through one group of backer roll 22 further to coated good absorber 1.The circumferential surface of the top roll of backer roll is coated with one deck elastomer, the lower roll circumferential surface of backer roll selects the metal steel rider through special handling, and the up-down rollers of backer roll can be heated, the temperature range of heating is at 50-250 DEG C, for ensureing that upper strata clad material 105 and lower floor's clad material 104 both sides are wrapped up tight, hot pressing week envelope can be carried out further by a pair heat-sealing roller 26 to upper and lower coating layer material 105 and 104.
The manufacture method step of the present embodiment is as follows:
(1) vacuum is inhaled to the high air draught district of long-pending fine drum 16, low air draught district, air pressure is applied to the blowing district of long-pending fine drum 16;
(2) drive long-pending fine drum 16 to rotate, input coating layer material 104 and 105 by clad material supply unit 23; Fluff pulp fibers conveyer device and polymeric absorbent resin particle feed dissemination apparatus 13 export fluff pulp fibers 101 and polymeric absorbent resin particle 102; Fluff pulp fibers 101 adsorbs into core material with polymeric absorbent resin particle 102 on the shaping mould 15 in high air draught district, is sent to blowing district by low air draught district;
(3) core material on shaping mould 15 blows out on two coating layer materials by the air pressure in blowing district;
(4) shift drum 25 pairs of core materials to overturn;
Bonded by PUR unit 24 between (5) two clad materials;
(6) backer roll unit 22 pairs of core material compactings form absorptive core 1 by heat-sealing roller 26 pairs of coating layer material hot pressing week envelope.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (15)
1. an absorptive core; comprise absorptive core top layer, absorptive core intermediate layer and absorptive core bottom; it is characterized in that: described absorptive core top layer is a certain amount of fluff pulp fibers and a small amount of polymeric absorbent resin particle mixture; described absorptive core intermediate layer is the mixture of a large amount of fluff pulp fibers and a large amount of polymeric absorbent resin particle; described absorptive core bottom is a certain amount of fluff pulp fibers, and the tightness degree of described absorptive core intermediate layer and absorptive core bottom is greater than the tightness degree on absorptive core top layer.
2. absorptive core according to claim 1, it is characterized in that: the thickness of described absorptive core top layer and absorptive core bottom is all less than the thickness in absorptive core intermediate layer, the weight on described absorptive core top layer is the 5-20% of whole absorptive core weight, the weight in described absorptive core intermediate layer is the 60-90% of whole absorptive core weight, and the weight of described absorptive core bottom is the 5-20% of whole absorptive core weight.
3. absorptive core according to claim 1, is characterized in that: the density of absorptive core intermediate layer and absorptive core bottom is 1.0-2.5g/cm
3, the density on absorptive core top layer is 0.5-1.8g/cm
3.
4. absorptive core according to any one of claim 1 to 3, is characterized in that: the top layer of described absorptive core and the clad of bottom are an entirety, is formed through the coated PUR bonding of doubling.
5. absorptive core according to any one of claim 1 to 3, is characterized in that: the top layer of described absorptive core and the clad of bottom are for two-layer up and down, and the side of levels clad is bonded by PUR.
6. the former of the absorptive core according to any one of claim 1 to 5, it is characterized in that: comprise long-pending fine chamber, long-pending fine drum, gear unit, clad material supply unit, buanch unit and backer roll unit, described long-pending fibre drum is divided into high air draught district, low air draught district and blowing district, described long-pending fibre drum is provided with shaping mould, the rear end in described long-pending fine chamber is arranged on the side of the shaping mould in described high air draught district, seal between the shaping mould in described long-pending fine chamber and described high air draught district, the front end in described long-pending fine chamber arranges fluff pulp fibers conveyer device, polymeric absorbent resin particle feed dissemination apparatus and tongue component, described polymeric absorbent resin particle feed dissemination apparatus is positioned at the front of described tongue component in described long-pending fibre drum rotation direction, described fluff pulp fibers conveyer device is positioned at the upper end of described tongue component, described long-pending fine chamber is by the molding on the shaping mould of described long-pending fibre drum of absorptive core material, after described long-pending fibre drum is joined with described clad material supply unit under the driving of described gear unit, the core material demoulding on described shaping mould transports at described clad material supply unit and scribbles on the clad material of PUR, after the compacting of described backer roll unit, absorptive core is formed again after described core material is turned over turnback by described buanch unit.
7. the former of absorptive core according to claim 6, it is characterized in that: described buanch unit is several transferring rollers, several transferring rollers described make the transmission direction of described core material reverse, the upper-lower position of core material is made to realize 180 degree of upsets, vacuum tank transporter is also provided with between described long-pending fibre drum and described buanch unit, absorptive core pressue device and absorptive core packing unit, after described vacuum tank transporter and absorptive core pressue device carry out preliminary consolidation to core material, through described absorptive core packing unit, described clad material is carried out packing to described core material again.
8. the former of absorptive core according to claim 6, it is characterized in that: described buanch unit is vacuum transfer drum, described vacuum transfer drum makes the transmission direction of described core material reverse, the upper-lower position of core material is made to realize 180 degree of upsets, described clad material supply unit is two, is separately positioned on the both sides of described vacuum transfer drum.
9. the former of absorptive core according to claim 6, it is characterized in that: described backer roll unit is made up of upper and lower two rollers, the circumferential surface of described top roll is coated with elastomer, the circumferential surface of described lower roll is rustless steel, described up-down rollers can be heated, heating temperature range 50-250 DEG C.
10. the former of the absorptive core according to any one of claim 6 to 8, is characterized in that: the quantity of described tongue component is 1 to 2, and described tongue component can swing in certain amplitude.
The former of 11. absorptive cores according to any one of claim 6 to 8, it is characterized in that: on described clad material supply unit, be provided with PUR applying unit, described PUR applying unit is coated with PUR on clad material upper strata.
The former of 12. absorptive cores according to any one of claim 6 to 8, is characterized in that: on described long-pending fibre drum, arrange barometric control unit.
13. 1 kinds of methods utilizing the former of absorptive core as claimed in claim 6 to manufacture absorptive core, is characterized in that: comprise the steps:
(1) vacuum is inhaled to the high air draught district of described long-pending fibre drum, low air draught district, air pressure is applied to the blowing district of described long-pending fibre drum;
(2) long-pending fine drum is driven to rotate, by clad material supply unit input coating layer material; Described fluff pulp fibers conveyer device and polymeric absorbent resin particle feed dissemination apparatus export Time of Fluff Slurry and polymeric absorbent resin particle; Described fluff pulp fibers adsorbs into core material with polymeric absorbent resin particle on the shaping mould in high air draught district, is sent to blowing district by low air draught district;
(3) core material on shaping mould is blown out the demoulding on coating layer material by the air pressure in described blowing district;
(4) described buanch unit overturns described core material;
(5) described backer roll unit forms absorptive core to core material compacting.
14. methods according to claim 13, is characterized in that: described clad material supply unit is one, before described step (4), also comprise the step of described coating layer material being carried out to packing.
15. methods according to claim 13, is characterized in that: described clad material supply unit is two, while described step (4), carry out PUR bonding to two coating layer materials.
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| WO2019069384A1 (en) * | 2017-10-03 | 2019-04-11 | 花王株式会社 | Method for manufacturing absorbent body |
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