CN115154053B - Paper diaper buckling device and corresponding cotton core independent forming process thereof - Google Patents
Paper diaper buckling device and corresponding cotton core independent forming process thereof Download PDFInfo
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- CN115154053B CN115154053B CN202210801181.2A CN202210801181A CN115154053B CN 115154053 B CN115154053 B CN 115154053B CN 202210801181 A CN202210801181 A CN 202210801181A CN 115154053 B CN115154053 B CN 115154053B
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- disc
- extrusion
- bottom die
- rotary disc
- rotating
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Classifications
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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
- A61F13/45—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 shape
- A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
- A61F13/496—Absorbent articles specially adapted to be worn around the waist, e.g. diapers in the form of pants or briefs
-
- 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
- A61F13/15617—Making absorbent pads from fibres or pulverulent material with or without treatment of the fibres
-
- 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
- A61F13/15666—Wrapping formed fibrous webs or pads, e.g. the pads being formed by uniting pad pieces cut from fibrous webs
-
- 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
- A61F13/53—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
- A61F13/535—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 inhomogeneous in the plane of the pad, e.g. core absorbent layers being of different sizes
- A61F13/536—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 inhomogeneous in the plane of the pad, e.g. core absorbent layers being of different sizes having discontinuous areas of compression
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C19/00—Other disintegrating devices or methods
- B02C19/16—Mills provided with vibrators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
- B29C59/02—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing
-
- 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
- A61F2013/15861—Apparatus or processes for manufacturing characterized by the apparatus for manufacturing for bonding
- A61F2013/15869—Apparatus or processes for manufacturing characterized by the apparatus for manufacturing for bonding with ultrasonic energy
-
- 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
- A61F2013/530481—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 superabsorbent materials, i.e. highly absorbent polymer gel materials
Abstract
The invention relates to the technical field of paper diaper production equipment, in particular to a paper diaper buckling device and a corresponding cotton core independent forming process thereof.
Description
Technical Field
The invention relates to the technical field of paper diaper production equipment, in particular to a paper diaper buckling device and a corresponding cotton core independent forming process thereof.
Background
The paper diaper is internally provided with a water absorption layer which is made of a high water absorption material (macromolecule SAP for short) as a main material, has good water absorption and water storage performance, can keep the lower body of the baby dry and comfortable, and enables the baby to keep a sound sleep all night, commonly known as 'diaper'.
The absorbent core of panty-shape diapers usually adopts behind the fluff pulp mixture to form through non-woven fabrics parcel surface, because the core directly adopts the non-woven fabrics cladding to not carry out the compaction behind the mould wheel in process of production, consequently its absorptivity is relatively poor for the core hydroscopicity after some extrusion stereotypes, in addition because absorbent resin powder easily appears gathering the condition of reunion in the fluff pulp content, and in the content easy running reunion in the non-woven fabrics, it is big to lead to the unsmooth degree of fluctuation in core absorbent rear surface, make the snugness of fit worsen, if can solve this technical problem will have positive meaning to the user experience who improves panty-shape diapers.
Disclosure of Invention
The invention aims to provide a paper diaper mold buckling device to solve the problems in the background technology.
The extrusion device comprises an extrusion box with an opening in the bottom surface, and an iron plate, iron sand and an elastic skin which are sequentially arranged in the extrusion box from top to bottom, a fixed-position air disc is arranged in the extrusion plate, the rotary disc is arranged right below the extrusion plate and is connected with a rotating device capable of driving the rotary disc and the extrusion plate to rotate, a bottom die is arranged on the side surface of the rotary disc, the electromagnet is arranged in the rotary disc and is adjacent to the rotary disc, and the ultrasonic vibration device is arranged in the rotary disc and is connected with a transducer of the ultrasonic vibration device and the bottom die.
Preferably, the bottom die is symmetrically arranged on the side surface of the rotating disc and has a rotationally symmetrical shape, and the cross section of the bottom die is in an arc shape.
Preferably, the surface of the elastic skin is provided with a polytetrafluoroethylene coating.
Preferably, the extrusion device is rotated to the bottommost position to correspond to the bottom die position.
Preferably, a pressure relief valve is arranged on the side surface of the pressure plate.
In addition, the invention also provides a cotton core independent forming process, and the cotton core forming process uses the equipment.
From the above description of the structure of the present invention, compared with the prior art, the present invention has the following advantages:
according to the paper diaper buckling device and the corresponding cotton core independent forming process thereof, an uncut core body passes through a pressurizing disc and a rotating disc by virtue of conveying equipment, gas enters the pressurizing disc from a gas disc to expand an elastic corrugated pipe, an extrusion device moves outwards and a bottom die are respectively positioned at two sides of the core body, then an electromagnet starts to attract an iron plate and iron sand to stretch the elastic corrugated pipe, and the extrusion device is tightly propped against the bottom die at the moment; the air disc generates high-frequency impact when air is fed, the high-frequency impact acts on the core body through the extrusion device to shake and disperse resin powder agglomerated in the core body, and in addition, because the iron sand is powdery and amorphous, the elastic skin can be driven to enter the bottom die under the action of the electromagnetic magnetic force, so that clear patterns with strong stereoscopic impression can be formed; the ultrasonic vibration device is started to enable the non-woven fabric on the bottom surface of the core body and the bottom die to generate violent friction and be locally melted, the melted non-woven fabric can be combined with fluff pulp and resin particles to avoid the phenomenon that the surface of the core body is uneven due to the fact that the content of the core body runs, and meanwhile the surface of the core body is shaped to avoid the disappearance of extruded patterns; after the processing is finished, the electromagnet is turned off, the magnetism disappears, the extrusion device resets under the elastic effect, then the air disc inhales air to enable the extrusion device to return to the extrusion disc, and the rotating device drives the pressurizing disc and the rotating disc to rotate to process the core body at the next station.
According to the invention, the iron sand is attracted by magnetic force to be matched with the elastic skin, so that clear patterns with strong three-dimensional sense can be pressed on the surface of the core body, the surface of the core body can not be cracked, in addition, the problems of uneven distribution of resin powder in the core body and uneven core body can be solved, the magnetic iron sand core has practical significance and popularization value, and good economic benefit can be expected to be generated.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. In the drawings:
FIG. 1 is a schematic cross-sectional configuration of the present invention;
FIG. 2 is a schematic view of the structure of the portion A in FIG. 1;
in the figure: the device comprises a pressurizing disc-1, an elastic corrugated pipe-11, an air disc-12, an extrusion device-2, an extrusion box-21, an iron plate-22, iron sand-23, an elastic skin-24, a rotating disc-3, a bottom die-31, an electromagnet-4 and an ultrasonic vibration device-5.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described 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 of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Examples
Combine fig. 1-2, a panty-shape diapers detain mould device, including pressurization dish 1, extrusion device 2, rotary disk 3, electro-magnet 4 and ultrasonic vibration device 5, pressurization dish 1 side equidistance is provided with several and the elasticity bellows 11 and the relief valve that is linked together rather than, and elasticity bellows 11 one end links to each other the other end with pressurization dish 1 and links to each other with extrusion device 2, extrusion device 2 includes bottom surface open-ended extrusion box 21 and from top to bottom sets gradually iron plate 22, iron sand 23 and the elastic skin 24 in extrusion box 21, is provided with rigidity's air dish 12 in the pressurization dish 1, rotary disk 3 sets up under pressurization dish 1 and rotary disk 3 and pressurization dish 1 all with can drive it and realize pivoted rotating device and link to each other, and rotary disk 3 side-mounting has die block 31 and electro-magnet 4 to set up rather than adjacent in rotary disk 3, and die block 31 symmetry sets up to be that the rotary symmetry form and die block 31 cross-section is personally submitted the arc form in the rotary disk 3 side, and extrusion device 2 just corresponds with die block 31 position when rotatory to bottommost, ultrasonic vibration device 5 sets up in 3 and ultrasonic vibration device's transducer links to link to each other with die block 31.
The air dish 12 is a component that is connected to an air inlet device to generate high frequency air flow impact in the prior art, and is connected to an external air inlet device in the embodiment.
The ultrasonic vibration device 5 and the rotating device refer to devices capable of generating ultrasonic vibration and driving the component to rotate, which belong to the prior art, and therefore, the detailed structure and working principle thereof need not be further described and can be known by those skilled in the art.
The elastic skin 24 is a skin layer made of an elastic material, a polytetrafluoroethylene coating is arranged on the surface of the elastic skin, the polytetrafluoroethylene has an extremely low surface friction coefficient, and the elastic skin is arranged to reduce the friction force between the elastic skin 24 and the bottom die 31.
The control mode of the invention is realized by an external controller, the control circuit of the controller can be realized by simple programming of technicians in the field, the supply of the power supply also belongs to the common knowledge in the field, and the invention is mainly used for protecting mechanical devices, so the control mode and the circuit connection are not explained in detail in the invention.
The working principle of the invention is as follows: the uncut core body passes through the space between the pressurizing disc 1 and the rotating disc 3 by means of conveying equipment, gas enters the pressurizing disc 1 from the gas disc 12 to expand the elastic corrugated pipe 11, the extruding device 2 moves outwards and the bottom die 31 is respectively positioned at two sides of the core body, then the electromagnet 4 starts the attraction iron plate 22 and the iron sand 23 to stretch the elastic corrugated pipe 11, and at the moment, the extruding device 2 tightly props against the bottom die 31; the air disc 12 generates high-frequency impact when air is fed, the high-frequency impact acts on the core body through the extrusion device 2 to shake and disperse resin powder agglomerated in the core body, and in addition, because the iron sand 23 is powdery and amorphous, the elastic skin 24 can be driven to enter the bottom die 31 under the action of the magnetic force of the electromagnet 4, so that clear patterns with strong stereoscopic impression are formed; the ultrasonic vibration device 5 is started to enable the non-woven fabric on the bottom surface of the core body and the bottom die 31 to generate violent friction and be locally melted, the melted non-woven fabric can be combined with fluff pulp and resin particles to avoid uneven surface of the core body caused by running of the content of the core body, and meanwhile, the surface of the core body is shaped to avoid disappearance of extruded patterns; after the processing is finished, the electromagnet 4 is closed, the magnetism disappears, the extrusion device 2 resets under the elastic action, then the air disc 12 sucks air to enable the extrusion device 2 to return to the extrusion disc, and the rotating device drives the pressurizing disc 1 and the rotating disc 3 to rotate to process the core body at the next station.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a panty-shape diapers detain mould device which characterized in that:
comprises a pressure plate (1), an extrusion device (2), a rotating disc (3), an electromagnet (4) and an ultrasonic vibration device (5);
a plurality of elastic corrugated pipes (11) communicated with the pressure plate (1) are arranged on the side surface of the pressure plate (1) at equal intervals, one end of each elastic corrugated pipe (11) is connected with the pressure plate (1), the other end of each elastic corrugated pipe is connected with the extrusion device (2), the extrusion device (2) comprises an extrusion box (21) with an opening in the bottom surface, and an iron plate (22), iron sand (23) and an elastic skin (24) which are sequentially arranged in the extrusion box (21) from top to bottom, and a fixed-position air disc (12) is arranged in the pressure plate (1);
the rotary disc (3) is arranged right below the pressurizing disc (1), the rotary disc (3) and the pressurizing disc (1) are both connected with a rotating device capable of driving the rotary disc (3) to rotate, a bottom die (31) is installed on the side face of the rotary disc (3), and the electromagnet (4) is arranged in the rotary disc (3) and is adjacent to the rotary disc;
the ultrasonic vibration device (5) is arranged in the rotating disc (3) and the transducer of the ultrasonic vibration device is connected with the bottom die (31).
2. The mold fastening device for paper diapers as claimed in claim 1, wherein: the bottom die (31) is symmetrically arranged on the side surface of the rotating disc (3) and is in a rotational symmetry shape, and the cross section of the bottom die (31) is in an arc shape.
3. The mold fastening device for paper diapers as claimed in claim 1, wherein: the surface of the elastic skin (24) is provided with a polytetrafluoroethylene coating.
4. The mold fastening device for paper diapers as claimed in claim 1, wherein: the extrusion device (2) is just corresponding to the position of the bottom die (31) when rotating to the bottommost position.
5. The mold buckling device for disposable diapers according to claim 1, wherein: a pressure relief valve is arranged on the side surface of the pressure adding plate (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210801181.2A CN115154053B (en) | 2022-07-08 | 2022-07-08 | Paper diaper buckling device and corresponding cotton core independent forming process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210801181.2A CN115154053B (en) | 2022-07-08 | 2022-07-08 | Paper diaper buckling device and corresponding cotton core independent forming process thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115154053A CN115154053A (en) | 2022-10-11 |
| CN115154053B true CN115154053B (en) | 2023-03-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210801181.2A Active CN115154053B (en) | 2022-07-08 | 2022-07-08 | Paper diaper buckling device and corresponding cotton core independent forming process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115154053B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0425428A2 (en) * | 1989-10-25 | 1991-05-02 | Hoechst Aktiengesellschaft | Method for preparation of sodium silicates |
| JPH0955020A (en) * | 1995-08-14 | 1997-02-25 | Sanyo Electric Co Ltd | Rotary table driving device having magnetic force attraction type disk holding-down mechanism |
| CN107280862A (en) * | 2017-07-28 | 2017-10-24 | 广东佰分爱卫生用品有限公司 | A kind of method that rationing-cutting type ultrasonic bonds production not discontinue does not act the paper diaper core body that sticks together |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206108371U (en) * | 2016-09-26 | 2017-04-19 | 深圳市引升自动化设备有限公司 | Automatic material sucking disc device of receiving of iron core |
| CN214679189U (en) * | 2020-08-15 | 2021-11-12 | 福建省时代天和实业有限公司 | Seepage-proofing diaper |
-
2022
- 2022-07-08 CN CN202210801181.2A patent/CN115154053B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0425428A2 (en) * | 1989-10-25 | 1991-05-02 | Hoechst Aktiengesellschaft | Method for preparation of sodium silicates |
| JPH0955020A (en) * | 1995-08-14 | 1997-02-25 | Sanyo Electric Co Ltd | Rotary table driving device having magnetic force attraction type disk holding-down mechanism |
| CN107280862A (en) * | 2017-07-28 | 2017-10-24 | 广东佰分爱卫生用品有限公司 | A kind of method that rationing-cutting type ultrasonic bonds production not discontinue does not act the paper diaper core body that sticks together |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115154053A (en) | 2022-10-11 |
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