WO2009000346A1 - Procédé de formation de carbonate de calcium dans une suspension de fibres - Google Patents
Procédé de formation de carbonate de calcium dans une suspension de fibres Download PDFInfo
- Publication number
- WO2009000346A1 WO2009000346A1 PCT/EP2008/001386 EP2008001386W WO2009000346A1 WO 2009000346 A1 WO2009000346 A1 WO 2009000346A1 EP 2008001386 W EP2008001386 W EP 2008001386W WO 2009000346 A1 WO2009000346 A1 WO 2009000346A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pulp
- calcium carbonate
- reactor
- fibers
- calcium hydroxide
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 47
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 title claims abstract description 40
- 229910000019 calcium carbonate Inorganic materials 0.000 title claims abstract description 20
- 239000000725 suspension Substances 0.000 title claims description 23
- 239000000835 fiber Substances 0.000 claims abstract description 42
- 239000000920 calcium hydroxide Substances 0.000 claims abstract description 36
- 235000011116 calcium hydroxide Nutrition 0.000 claims abstract description 34
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 26
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims abstract description 23
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims abstract description 21
- 239000000126 substance Substances 0.000 claims abstract description 16
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 13
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 13
- 125000000129 anionic group Chemical group 0.000 claims abstract description 11
- 239000000945 filler Substances 0.000 claims abstract description 11
- 238000006243 chemical reaction Methods 0.000 claims abstract description 7
- 239000002245 particle Substances 0.000 claims abstract description 7
- 239000000203 mixture Substances 0.000 claims abstract description 6
- 239000004952 Polyamide Substances 0.000 claims abstract description 3
- 229920002472 Starch Polymers 0.000 claims abstract description 3
- 230000014759 maintenance of location Effects 0.000 claims abstract description 3
- 229920002647 polyamide Polymers 0.000 claims abstract description 3
- 150000003839 salts Chemical class 0.000 claims abstract description 3
- 239000008107 starch Substances 0.000 claims abstract description 3
- 235000019698 starch Nutrition 0.000 claims abstract description 3
- 238000011068 loading method Methods 0.000 claims description 17
- 230000008569 process Effects 0.000 claims description 15
- 238000004519 manufacturing process Methods 0.000 claims description 11
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 9
- 239000000292 calcium oxide Substances 0.000 claims description 9
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 9
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 5
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- 239000004571 lime Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 235000013336 milk Nutrition 0.000 claims description 4
- 239000008267 milk Substances 0.000 claims description 4
- 210000004080 milk Anatomy 0.000 claims description 4
- 238000004090 dissolution Methods 0.000 claims description 3
- 230000035515 penetration Effects 0.000 abstract description 2
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 239000000123 paper Substances 0.000 description 17
- 239000007787 solid Substances 0.000 description 5
- 239000007789 gas Substances 0.000 description 4
- 239000010893 paper waste Substances 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 241000196324 Embryophyta Species 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 239000000706 filtrate Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000013078 crystal Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000002657 fibrous material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000000376 reactant Substances 0.000 description 2
- 230000008719 thickening Effects 0.000 description 2
- 244000025254 Cannabis sativa Species 0.000 description 1
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 description 1
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 description 1
- 229920003043 Cellulose fiber Polymers 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 150000001447 alkali salts Chemical class 0.000 description 1
- 239000007900 aqueous suspension Substances 0.000 description 1
- 235000009120 camo Nutrition 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000011111 cardboard Substances 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 235000005607 chanvre indien Nutrition 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011487 hemp Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012764 mineral filler Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000011087 paperboard Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000013055 pulp slurry Substances 0.000 description 1
- 239000012495 reaction gas Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 1
- 229910021653 sulphate ion Inorganic materials 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/70—Inorganic compounds forming new compounds in situ, e.g. within the pulp or paper, by chemical reaction with other substances added separately
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
- D21H17/24—Polysaccharides
- D21H17/28—Starch
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/54—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen
- D21H17/55—Polyamides; Polyaminoamides; Polyester-amides
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/06—Paper forming aids
- D21H21/10—Retention agents or drainage improvers
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/16—Sizing or water-repelling agents
Definitions
- the invention relates to a method according to the preamble of claim 1.
- US 5,223,090 discloses a method employing fibrous material having elongated fibers with a cell wall surrounding a cavity, the fibers having a humidity sufficient to form a dewatered pulp slurry.
- the fibers have a moisture content corresponding to a proportion of 40 to 50% of the weight of the fibers.
- the water is essentially present inside the fibers and inside the fiber walls.
- calcium oxide or calcium hydroxide is added to the pulp so that at least part of the incorporated calcium oxide or calcium hydroxide is associated with the water present in the pulp.
- the fibrous cellulosic material is combined with carbon dioxide while being subjected to a shear mixing process to obtain a fibrous material having a substantial amount of calcium carbonate on the fiber surface in the hollow interior and within the fiber walls of the cellulose fibers.
- a method for loading a waste paper suspension which serves in particular to increase the whiteness of the - deinked or non-deinked - waste paper.
- a waste paper suspension is preferably introduced at a consistency of between 0.1 and 5% in a gas / liquid reactor. Downstream of this insertion then takes place the supply of a basic salt-containing liquid, in particular of calcium hydroxide, wherein the thus mixed components with a reaction gas, in particular carbon dioxide, are brought into contact, thereby precipitating the filler.
- the thus loaded waste paper suspension is then used for paper or board production.
- a particularly suitable gas / liquid reactor a mixing container is proposed in which gas bubbles are distributed in a liquid. Apparently, an unusually high degree of filling of the pulp (filler content several hundred percent of the fiber weight) is required to achieve the desired whiteness.
- a further method for loading a pulp suspension comprises the following steps: introduction of calcium hydroxide in liquid or dry form or of calcium oxide into the pulp suspension, thickening and heating of the pulp suspension, feeding of gaseous carbon dioxide in a crystallizer, precipitation of calcium carbonate by the carbon dioxide.
- Fiber loaded with calcium carbonate fiber loaded precipitate calcium carbonate
- the field of application of the invention extends to paper and pulp production and process technology, including the filler produced, and includes fields of application of all types of paper, including those resulting from their production, which have a filler content between 1% and 60%.
- the filler content may be between 5% and 50%.
- Loading has a positive effect on the processes in stock preparation, paper machine and / or further processing.
- a paper web made of loaded fibers is easier to dewater, for which reason e.g. the machine speed can be increased and / or the press section can be operated with a lower pressing pressure.
- a further advantage of the use of the technology according to the invention in the paper grades listed above is that they can also be further processed without problems in a calender.
- the fiber load can be used to increase the productivity of the paper machine and / or to make its production more cost-effective (by, for example, raw material energy cost reduction).
- the new process will increase the calcium hydroxide uptake of the fibers.
- electrical action of the added anionic substances a stronger connection to the fiber surfaces and / or a better penetration into the cavities can be achieved and also the production of calcium carbonate within the fibers ("lumen loading") can be increased.
- Lumen loading can be further intensified if, after addition to the pulp suspension, the anionic substances are removed by a special process step, e.g. Washing / thickening of the outer surfaces of the fibers are removed again, so that the charge setting of lumens and fiber outer surfaces is different.
- a special process step e.g. Washing / thickening of the outer surfaces of the fibers are removed again, so that the charge setting of lumens and fiber outer surfaces is different.
- the starting material for the loading process is an aqueous pulp suspension, in particular pulp suspension with 0.1 to 30% consistency. This is mixed with calcium oxide or hydroxide in liquid or solid form.
- the calcium hydroxide is suspended to a large extent in the form of fine solid particles and is brought into contact with the surface of the fibers. Because the Fibers have the form of at least one side open elongated hollow bodies, the calcium hydroxide can also penetrate into the interior of the fibers, the so-called lumen.
- additional calcium hydroxide or calcium oxide in aqueous and / or solid form may also be mixed into the reactor, e.g. be added as lime milk.
- the process temperature is between generation of the calcium carbonate + 15 0 C and 130 ° C, in particular between 20 ° and 60 ° C.
- the formation of the calcium carbonate is preferably carried out in a pressure range between 0.1 and 6 bar, in particular between 1 and 4 bar. There are also higher pressures, e.g. up to 20 bar possible.
- the average residence time of the substance in the reactor is between 60 seconds and 15 minutes, in particular between 5 and 10 minutes.
- the solids concentration of the pulp suspension provided for reaction with carbon dioxide is selected in a range from about 0.1 to about 40% and preferably in a range from about 0.5 to 30%.
- crystals of a rhombohedral form may be used Particle size fraction in a range of about 0.02 to about 5 microns are generated.
- crystals of a scalenohedral form or agglomerates having a respective length in a range from about 0.02 to about
- Fig. 1 is a plant diagram for illustrating the method according to the invention
- Fig. 2 system diagram for a varied method.
- a favorable embodiment of the method according to the invention is illustrated by means of a plant scheme.
- a pulp suspension 1 is formed in the pulper 10.
- the dissolution in pulper 10 should be so complete that practically all fibers are separated. Otherwise, it would be advisable to use a de-stuffer downstream of the pulper 10.
- a mixing vessel 2 with stirrer 28 serves to provide the fiber suspension 1 with calcium oxide or calcium hydroxide, e.g. as here in the form of milk of lime MOL, to mix and also to allow a defined residence time.
- the lime milk MOL is provided by a lime leaching device 3 and conveyed by a pump 11.
- the attachment of the added or formed calcium hydroxide to the fibers is favored by the addition of anionic substances, which is indicated with a chemical container 22 and corresponding dosage.
- the anionic substances are preferably added before the calcium oxide or hydroxide. They are composed in particular of salts, polyamides, retention aids or starch particles.
- a suitable reactor 5 is for example a closed container provided with a stirrer 27. Due to the movements of the contents, the reactants can easily come into contact.
- the loaded pulp then passes into a finishing unit, e.g. a storage tank 13. From there it is pumped for further processing, ultimately for the production of paper or cardboard.
- a finishing unit e.g. a storage tank 13.
- the plant scheme of Fig. 2 shows a variant of the method.
- the formation of the pulp suspension and its treatment with anionic substances can be carried out similarly as described in FIG.
- the addition of at least part of the milk of lime MOL into the pulper 10 is indicated here (dashed line). If the solution is dissolved in batch mode, the lime milk MOL can later be added to pulper 10 as the anionic substances.
- the mixture 7 enters the press 4, in which the consistency is set to a value, for example, is up to 30%.
- the pressed filtrate 14 flows into the press water tank 8 and can be conveyed via a filtrate pump 12 to the desired locations.
- a suitable reactor 6 is, for example, a closed screw conveyor, which is preferably operated so that it is filled to a maximum of 80% - VoI, preferably 50% -vol, with a moist solid, wherein the water volume of the pulp is included.
- the remaining volume in the reactor 6 is occupied by gas or steam or spray liquid. Due to the movements of the contents, the reactants can easily come into contact.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Paper (AREA)
Abstract
L'invention concerne un procédé de chargement de fibres avec des charges, notamment du carbonate de calcium. Selon ce procédé, de l'hydroxyde de calcium est mis en contact avec du dioxyde de carbone gazeux (CO2), p. ex. dans du lait de chaux (MOL), du carbonate de calcium étant formé par une réaction chimique. Avant cette réaction, la pénétration de l'hydroxyde de calcium dans les fibres est favorisée par l'ajout de substances anioniques, telles que notamment des sels, des polyamides, des agents de rétention ou des particules d'amidon ou un mélange de ces substances.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102007029686.1 | 2007-06-27 | ||
| DE200710029686 DE102007029686A1 (de) | 2007-06-27 | 2007-06-27 | Verfahren zum Bilden von Calciumcarbonat in einer Faserstoffsuspension |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2009000346A1 true WO2009000346A1 (fr) | 2008-12-31 |
Family
ID=39387111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2008/001386 WO2009000346A1 (fr) | 2007-06-27 | 2008-02-22 | Procédé de formation de carbonate de calcium dans une suspension de fibres |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE102007029686A1 (fr) |
| WO (1) | WO2009000346A1 (fr) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014174155A1 (fr) * | 2013-04-26 | 2014-10-30 | Wetend Technologies Oy | Procédé pour alimenter une composition de fabrication d'une bande fibreuse en charge, et papier ou carton |
| US9051689B2 (en) | 2010-08-20 | 2015-06-09 | Upm-Kymmene Corporation | Method for precipitating calcium carbonate |
| CN109072555A (zh) * | 2016-04-13 | 2018-12-21 | 德尔福特集团有限公司 | 具有针对脂肪的增强的抗性的用于食物的轻质包装纸 |
| US10646108B2 (en) | 2013-12-24 | 2020-05-12 | Motus Gi Medical Technologies Ltd. | Ancillary vacuum module usable with an endoscope |
| CN118580012A (zh) * | 2024-06-20 | 2024-09-03 | 华新水泥股份有限公司 | 一种绿色低碳的改性钢纤维及应用 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4925530A (en) * | 1985-12-21 | 1990-05-15 | The Wiggins Teape Group Limited | Loaded paper |
| US5223090A (en) * | 1991-03-06 | 1993-06-29 | The United States Of America As Represented By The Secretary Of Agriculture | Method for fiber loading a chemical compound |
| US5665205A (en) * | 1995-01-19 | 1997-09-09 | International Paper Company | Method for improving brightness and cleanliness of secondary fibers for paper and paperboard manufacture |
| DE10204254A1 (de) * | 2002-02-02 | 2003-08-14 | Voith Paper Patent Gmbh | Verfahren zur Aufbereitung von in einer Faserstoffsuspension enthaltenen Fasern |
-
2007
- 2007-06-27 DE DE200710029686 patent/DE102007029686A1/de not_active Withdrawn
-
2008
- 2008-02-22 WO PCT/EP2008/001386 patent/WO2009000346A1/fr active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4925530A (en) * | 1985-12-21 | 1990-05-15 | The Wiggins Teape Group Limited | Loaded paper |
| US5223090A (en) * | 1991-03-06 | 1993-06-29 | The United States Of America As Represented By The Secretary Of Agriculture | Method for fiber loading a chemical compound |
| US5665205A (en) * | 1995-01-19 | 1997-09-09 | International Paper Company | Method for improving brightness and cleanliness of secondary fibers for paper and paperboard manufacture |
| DE10204254A1 (de) * | 2002-02-02 | 2003-08-14 | Voith Paper Patent Gmbh | Verfahren zur Aufbereitung von in einer Faserstoffsuspension enthaltenen Fasern |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9051689B2 (en) | 2010-08-20 | 2015-06-09 | Upm-Kymmene Corporation | Method for precipitating calcium carbonate |
| WO2014174155A1 (fr) * | 2013-04-26 | 2014-10-30 | Wetend Technologies Oy | Procédé pour alimenter une composition de fabrication d'une bande fibreuse en charge, et papier ou carton |
| CN105339548A (zh) * | 2013-04-26 | 2016-02-17 | 芬兰温德造纸湿部技术公司 | 为制造纤维网的配料提供填料的方法以及纸或纸板 |
| US9708772B2 (en) | 2013-04-26 | 2017-07-18 | Wetend Technologies Oy | Method of providing fiber web making furnish with filler, and paper or paper board |
| US10646108B2 (en) | 2013-12-24 | 2020-05-12 | Motus Gi Medical Technologies Ltd. | Ancillary vacuum module usable with an endoscope |
| US11849921B2 (en) | 2013-12-24 | 2023-12-26 | Motus Gi Medical Technologies Ltd. | Ancillary vacuum module usable with an endoscope |
| CN109072555A (zh) * | 2016-04-13 | 2018-12-21 | 德尔福特集团有限公司 | 具有针对脂肪的增强的抗性的用于食物的轻质包装纸 |
| CN118580012A (zh) * | 2024-06-20 | 2024-09-03 | 华新水泥股份有限公司 | 一种绿色低碳的改性钢纤维及应用 |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102007029686A1 (de) | 2009-01-02 |
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