DE1635714A1 - Verfahren und Vorrichtung zur Herstellung von Faserstoff - Google Patents
Verfahren und Vorrichtung zur Herstellung von FaserstoffInfo
- Publication number
- DE1635714A1 DE1635714A1 DE19681635714 DE1635714A DE1635714A1 DE 1635714 A1 DE1635714 A1 DE 1635714A1 DE 19681635714 DE19681635714 DE 19681635714 DE 1635714 A DE1635714 A DE 1635714A DE 1635714 A1 DE1635714 A1 DE 1635714A1
- Authority
- DE
- Germany
- Prior art keywords
- fibers
- gas
- fiber
- linen
- binder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims description 42
- 238000004519 manufacturing process Methods 0.000 title claims description 21
- 239000000835 fiber Substances 0.000 claims description 161
- 239000011230 binding agent Substances 0.000 claims description 72
- 239000000463 material Substances 0.000 claims description 45
- 238000007493 shaping process Methods 0.000 claims description 34
- 239000002657 fibrous material Substances 0.000 claims description 20
- 238000007667 floating Methods 0.000 claims description 19
- 238000004049 embossing Methods 0.000 claims description 16
- 229920003043 Cellulose fiber Polymers 0.000 claims description 11
- 238000011282 treatment Methods 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 239000000725 suspension Substances 0.000 claims description 8
- 239000004753 textile Substances 0.000 claims description 8
- 238000003825 pressing Methods 0.000 claims description 5
- 229920002472 Starch Polymers 0.000 claims description 4
- 239000008107 starch Substances 0.000 claims description 4
- 235000019698 starch Nutrition 0.000 claims description 4
- 239000004816 latex Substances 0.000 claims description 3
- 229920000126 latex Polymers 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 229920000881 Modified starch Polymers 0.000 claims description 2
- 235000019426 modified starch Nutrition 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims 1
- 239000004744 fabric Substances 0.000 claims 1
- 239000000047 product Substances 0.000 description 49
- 239000007789 gas Substances 0.000 description 25
- 239000004033 plastic Substances 0.000 description 16
- 229920003023 plastic Polymers 0.000 description 16
- 239000000243 solution Substances 0.000 description 9
- 230000015572 biosynthetic process Effects 0.000 description 6
- 239000001257 hydrogen Substances 0.000 description 6
- 229910052739 hydrogen Inorganic materials 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 238000001035 drying Methods 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 3
- 239000000123 paper Substances 0.000 description 3
- 230000000717 retained effect Effects 0.000 description 3
- 239000012209 synthetic fiber Substances 0.000 description 3
- 229920002994 synthetic fiber Polymers 0.000 description 3
- 239000002250 absorbent Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005686 electrostatic field Effects 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- 239000011152 fibreglass Substances 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000032258 transport Effects 0.000 description 2
- JIGWWGDIEUWCOR-UHFFFAOYSA-N 3-(1,4-diazabicyclo[3.2.2]nonan-4-yl)-6-fluorodibenzothiophene 5,5-dioxide Chemical compound C1=C2S(=O)(=O)C=3C(F)=CC=CC=3C2=CC=C1N1CCN2CCC1CC2 JIGWWGDIEUWCOR-UHFFFAOYSA-N 0.000 description 1
- 241000380131 Ammophila arenaria Species 0.000 description 1
- 241000554155 Andes Species 0.000 description 1
- 229910000906 Bronze Inorganic materials 0.000 description 1
- 244000025254 Cannabis sativa Species 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 244000269722 Thea sinensis Species 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000006664 bond formation reaction Methods 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000013065 commercial product Substances 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000000249 desinfective effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- -1 e.g. Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000011094 fiberboard Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000003906 humectant Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 239000001254 oxidized starch Substances 0.000 description 1
- 235000013808 oxidized starch Nutrition 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/58—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
- D04H1/64—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives the bonding agent being applied in wet state, e.g. chemical agents in dispersions or solutions
- D04H1/645—Impregnation followed by a solidification process
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/425—Cellulose series
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/58—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
- D04H1/64—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives the bonding agent being applied in wet state, e.g. chemical agents in dispersions or solutions
- D04H1/68—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives the bonding agent being applied in wet state, e.g. chemical agents in dispersions or solutions the bonding agent being applied in the form of foam
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
- D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
- D04H1/732—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged by fluid current, e.g. air-lay
-
- 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
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
-
- 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
- D21H5/00—Special paper or cardboard not otherwise provided for
- D21H5/26—Special paper or cardboard manufactured by dry method; Apparatus or processes for forming webs by dry method from mainly short-fibre or particle material, e.g. paper pulp
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Nonwoven Fabrics (AREA)
Applications Claiming Priority (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DK6667 | 1967-01-05 | ||
| DK6767 | 1967-01-05 | ||
| DK6567 | 1967-01-05 | ||
| DK9767 | 1967-01-06 | ||
| DK43267A DK147323B (da) | 1967-01-25 | 1967-01-25 | Fremgangsmaade til fremstilling af et ark- eller baneformet fibermateriale |
| DK62367 | 1967-02-03 | ||
| DK126467 | 1967-03-10 | ||
| DK135367 | 1967-03-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1635714A1 true DE1635714A1 (de) | 1971-05-06 |
Family
ID=27570783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19681635714 Pending DE1635714A1 (de) | 1967-01-05 | 1968-01-03 | Verfahren und Vorrichtung zur Herstellung von Faserstoff |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US3575749A (en, 2012) |
| JP (1) | JPS5540695B1 (en, 2012) |
| BE (1) | BE708994A (en, 2012) |
| DE (1) | DE1635714A1 (en, 2012) |
| FI (1) | FI48206C (en, 2012) |
| FR (1) | FR1559034A (en, 2012) |
| NL (1) | NL6800222A (en, 2012) |
| NO (1) | NO126335B (en, 2012) |
| SE (1) | SE340264B (en, 2012) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109972283A (zh) * | 2017-12-28 | 2019-07-05 | 安徽省卓创信息科技服务有限公司 | 一种仿丝棉的制备方法 |
Families Citing this family (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3598680A (en) * | 1968-04-18 | 1971-08-10 | Int Paper Co | Tandem air former |
| US4157236A (en) * | 1977-02-28 | 1979-06-05 | Beloit Corporation | Electrostatic dry former |
| US4377440A (en) * | 1978-05-25 | 1983-03-22 | Stein Gasland | Process for manufacturing of formed products |
| US4268235A (en) * | 1979-12-21 | 1981-05-19 | American Can Company | Apparatus for the manufacture of fibrous webs |
| US4335066A (en) * | 1979-12-21 | 1982-06-15 | Kimberly-Clark Corporation | Method of forming a fibrous web with high fiber throughput screening |
| US4366111A (en) * | 1979-12-21 | 1982-12-28 | Kimberly-Clark Corporation | Method of high fiber throughput screening |
| US4445949A (en) * | 1981-07-07 | 1984-05-01 | Dayco Corporation | Method of making a fiber-loaded polymeric sheet |
| US4636418A (en) * | 1984-05-17 | 1987-01-13 | James River Corporation | Cloth-like composite laminate and a method of making |
| US4634621A (en) * | 1984-05-17 | 1987-01-06 | The James River Corporation | Scrim reinforced, cloth-like composite laminate and a method of making |
| US4637949A (en) * | 1984-07-03 | 1987-01-20 | James River Corporation | Scrim reinforced, flat cloth-like composite laminate and a method of making |
| US4806190A (en) * | 1985-04-16 | 1989-02-21 | James River-Norwalk, Inc. | Method and apparatus for forming reinforced dry laid fibrous webs |
| US5023126A (en) * | 1987-10-02 | 1991-06-11 | Fort Howard Corporation | Composite towels and method for making composite towels |
| US5128082A (en) * | 1990-04-20 | 1992-07-07 | James River Corporation | Method of making an absorbant structure |
| US5266250A (en) * | 1990-05-09 | 1993-11-30 | Kroyer K K K | Method of modifying cellulosic wood fibers and using said fibers for producing fibrous products |
| WO1995012020A1 (en) * | 1993-10-28 | 1995-05-04 | KRØYER, Ingelise | Process for the production of a fibrous sheet material |
| US6569274B1 (en) | 1997-05-07 | 2003-05-27 | Air Products And Chemicals, Inc. | Sealable nonwoven web |
| US5961763A (en) * | 1997-05-07 | 1999-10-05 | Air Products And Chemicals, Inc. | Sealable nonwoven web |
| MXPA05003973A (es) * | 2002-10-15 | 2005-06-22 | Celli Nonwovens Spa | Dispositivo para conformar en seco una tela de fibras. |
| US8592329B2 (en) | 2003-10-07 | 2013-11-26 | Hollingsworth & Vose Company | Vibrationally compressed glass fiber and/or other material fiber mats and methods for making the same |
| DE102004009556A1 (de) * | 2004-02-25 | 2005-09-22 | Concert Gmbh | Verfahren zur Herstellung einer Faserbahn aus Cellulosefasern in einem Trockenlegungsprozess |
| US7886411B2 (en) * | 2007-07-06 | 2011-02-15 | Jezzi Arrigo D | Apparatus for the uniform distribution of fibers in an air stream |
| US8122570B2 (en) * | 2007-07-06 | 2012-02-28 | Jezzi Arrigo D | Apparatus and method for dry forming a uniform non-woven fibrous web |
| FI20095800A0 (fi) | 2009-07-20 | 2009-07-20 | Ahlstroem Oy | Nonwoven komposiittituote, jolla on korkea selluloosapitoisuus |
| CN102599633A (zh) * | 2011-12-15 | 2012-07-25 | 广东省金叶烟草薄片技术开发有限公司 | 一种干法再造烟叶的原料添加方法 |
| CN110998024A (zh) | 2017-06-02 | 2020-04-10 | 普乐模塑纤维技术私人有限责任公司 | 用于由绒毛浆材料制造3-维成形产品的方法以及这样的产品 |
| SE542866C2 (en) | 2018-04-04 | 2020-07-21 | Stora Enso Oyj | Method for manufacturing a dry-laid mat for thermoforming |
| EP4021702A1 (en) * | 2019-08-30 | 2022-07-06 | PulPac AB | A method for producing cellulose products and a rotary forming mould system |
| EP4178876A4 (en) | 2020-07-09 | 2024-08-14 | Stora Enso Oyj | 3D-SHAPED PACKAGING PRODUCT FROM AN AIR-LAID BLANK |
| SE546124C2 (en) | 2020-08-24 | 2024-05-28 | Stora Enso Oyj | Air-laid blank and a method of producing a three-dimensional shaped product from said air-laid blank |
| US20240359896A1 (en) * | 2023-04-28 | 2024-10-31 | Apple Inc. | Variably compressed fiber packaging and dry molding fiber process |
-
1967
- 1967-12-29 SE SE18119/67A patent/SE340264B/xx unknown
-
1968
- 1968-01-03 DE DE19681635714 patent/DE1635714A1/de active Pending
- 1968-01-03 FR FR1559034D patent/FR1559034A/fr not_active Expired
- 1968-01-04 NO NO6827A patent/NO126335B/no unknown
- 1968-01-04 US US695688A patent/US3575749A/en not_active Expired - Lifetime
- 1968-01-04 FI FI680022A patent/FI48206C/fi active
- 1968-01-05 NL NL6800222A patent/NL6800222A/xx unknown
- 1968-01-05 BE BE708994D patent/BE708994A/xx unknown
- 1968-01-05 JP JP68445A patent/JPS5540695B1/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109972283A (zh) * | 2017-12-28 | 2019-07-05 | 安徽省卓创信息科技服务有限公司 | 一种仿丝棉的制备方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| SE340264B (en, 2012) | 1971-11-15 |
| JPS5540695B1 (en, 2012) | 1980-10-20 |
| US3575749A (en) | 1971-04-20 |
| FI48206C (fi) | 1974-07-10 |
| BE708994A (en, 2012) | 1968-05-16 |
| NO126335B (en, 2012) | 1973-01-22 |
| FI48206B (en, 2012) | 1974-04-01 |
| NL6800222A (en, 2012) | 1968-07-08 |
| FR1559034A (en, 2012) | 1969-03-07 |
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