CH616366A5 - - Google Patents
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- Publication number
- CH616366A5 CH616366A5 CH896176A CH896176A CH616366A5 CH 616366 A5 CH616366 A5 CH 616366A5 CH 896176 A CH896176 A CH 896176A CH 896176 A CH896176 A CH 896176A CH 616366 A5 CH616366 A5 CH 616366A5
- Authority
- CH
- Switzerland
- Prior art keywords
- strip
- adhesive
- wires
- laminate
- paper
- Prior art date
Links
- 239000000853 adhesive Substances 0.000 claims description 102
- 230000001070 adhesive effect Effects 0.000 claims description 102
- 239000000123 paper Substances 0.000 claims description 72
- 239000002184 metal Substances 0.000 claims description 30
- 238000000034 method Methods 0.000 claims description 28
- 239000011111 cardboard Substances 0.000 claims description 19
- 238000004519 manufacturing process Methods 0.000 claims description 19
- 238000001816 cooling Methods 0.000 claims description 9
- 238000005520 cutting process Methods 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 7
- 239000011087 paperboard Substances 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 3
- 238000000151 deposition Methods 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 230000003014 reinforcing effect Effects 0.000 description 22
- 239000000203 mixture Substances 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 229920002472 Starch Polymers 0.000 description 5
- 230000002787 reinforcement Effects 0.000 description 5
- 239000008107 starch Substances 0.000 description 5
- 235000019698 starch Nutrition 0.000 description 5
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000010030 laminating Methods 0.000 description 3
- 239000008399 tap water Substances 0.000 description 3
- 235000020679 tap water Nutrition 0.000 description 3
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 3
- 229920002554 vinyl polymer Polymers 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- 102000011632 Caseins Human genes 0.000 description 1
- 108010076119 Caseins Proteins 0.000 description 1
- 239000004820 Pressure-sensitive adhesive Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 229910021538 borax Inorganic materials 0.000 description 1
- BECPQYXYKAMYBN-UHFFFAOYSA-N casein, tech. Chemical compound NCCCCC(C(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(CC(C)C)N=C(O)C(CCC(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(C(C)O)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(COP(O)(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(N)CC1=CC=CC=C1 BECPQYXYKAMYBN-UHFFFAOYSA-N 0.000 description 1
- 229940021722 caseins Drugs 0.000 description 1
- 235000021240 caseins Nutrition 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000007385 chemical modification Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 1
- 239000004328 sodium tetraborate Substances 0.000 description 1
- 235000010339 sodium tetraborate Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000013517 stratification Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B29/00—Layered products comprising a layer of paper or cardboard
- B32B29/02—Layered products comprising a layer of paper or cardboard next to a fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B29/00—Layered products comprising a layer of paper or cardboard
- B32B29/08—Corrugated paper or cardboard
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/28—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer comprising a deformed thin sheet, i.e. the layer having its entire thickness deformed out of the plane, e.g. corrugated, crumpled
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
-
- 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
- D21H27/30—Multi-ply
- D21H27/32—Multi-ply with materials applied between the sheets
- D21H27/34—Continuous materials, e.g. filaments, sheets, nets
-
- 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
- D21H27/30—Multi-ply
- D21H27/40—Multi-ply at least one of the sheets being non-planar, e.g. crêped
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2305/00—Condition, form or state of the layers or laminate
- B32B2305/08—Reinforcements
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
- Y10T156/10—Methods of surface bonding and/or assembly therefor
- Y10T156/1002—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
- Y10T156/1007—Running or continuous length work
- Y10T156/1016—Transverse corrugating
- Y10T156/1018—Subsequent to assembly of laminae
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
- Y10T156/10—Methods of surface bonding and/or assembly therefor
- Y10T156/1002—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
- Y10T156/1025—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina to form undulated to corrugated sheet and securing to base with parts of shaped areas out of contact
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
- Y10T156/10—Methods of surface bonding and/or assembly therefor
- Y10T156/1052—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
- Y10T156/1062—Prior to assembly
- Y10T156/1075—Prior to assembly of plural laminae from single stock and assembling to each other or to additional lamina
- Y10T156/1079—Joining of cut laminae end-to-end
Landscapes
- Laminated Bodies (AREA)
- Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
- Wrappers (AREA)
- Buffer Packaging (AREA)
- Making Paper Articles (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/599,142 US4203790A (en) | 1975-07-25 | 1975-07-25 | Method of forming wire reinforced corrugated board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH616366A5 true CH616366A5 (de) | 1980-03-31 |
Family
ID=24398405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH896176A CH616366A5 (de) | 1975-07-25 | 1976-07-13 |
Country Status (20)
| Country | Link |
|---|---|
| US (1) | US4203790A (de) |
| JP (1) | JPS5913983B2 (de) |
| AR (1) | AR208378A1 (de) |
| AT (1) | AT363310B (de) |
| AU (1) | AU502052B2 (de) |
| BE (1) | BE843900A (de) |
| BR (1) | BR7604726A (de) |
| CA (1) | CA1068204A (de) |
| CH (1) | CH616366A5 (de) |
| DE (1) | DE2632103C2 (de) |
| ES (1) | ES450084A1 (de) |
| FR (1) | FR2338138A1 (de) |
| GB (1) | GB1557212A (de) |
| HK (1) | HK24681A (de) |
| IT (1) | IT1066027B (de) |
| MX (1) | MX143106A (de) |
| NL (1) | NL174851C (de) |
| NZ (1) | NZ181434A (de) |
| SE (1) | SE429351B (de) |
| ZA (1) | ZA763591B (de) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4341579A (en) * | 1978-06-06 | 1982-07-27 | Chavannes Marc A | Wire reinforced corrugated board and method and apparatus for making same |
| US4358498A (en) * | 1980-09-24 | 1982-11-09 | Chavannes Marc A | Reinforced laminated and corrugated board-like structures and method for the manufacturing thereof |
| US4409274A (en) * | 1982-02-24 | 1983-10-11 | Westvaco Corporation | Composite material |
| DE3226907C2 (de) * | 1982-07-17 | 1986-08-07 | M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach | Falz- und Klebevorrichtung für eine Rollenrotationsdruckmaschine |
| DE19847177A1 (de) * | 1998-10-14 | 2000-04-20 | Dieter Bergmann | Karton |
| DE202013105317U1 (de) * | 2013-11-22 | 2014-11-24 | Mayr-Melnhof Karton Ag | Schichtstoff und Vorrichtung zur Herstellung eines Schichtstoffs |
| CN105780605A (zh) * | 2016-03-29 | 2016-07-20 | 浙江金卡达彩印包装有限公司 | 瓦楞纸纸箱及瓦楞纸板加工工艺 |
| US11267217B2 (en) | 2016-08-23 | 2022-03-08 | Marc-Andre Racine | System and method for bending a hollow core sheet using rods |
| CN106585033A (zh) * | 2016-12-08 | 2017-04-26 | 怀宁县天元纸业有限公司 | 一种瓦楞纸板 |
| CN106626552A (zh) * | 2016-12-08 | 2017-05-10 | 怀宁县天元纸业有限公司 | 一种瓦楞纸板 |
| CN111559121B (zh) * | 2020-04-23 | 2022-02-22 | 许昌华龙日清纸品有限公司 | 一种瓦楞纸箱的生产方法 |
| CN114986980A (zh) * | 2022-07-13 | 2022-09-02 | 乐亭县金正印刷包装制作有限公司 | 具有加强线的包装箱生产工艺 |
| CN115198569B (zh) * | 2022-07-28 | 2023-09-08 | 淮安鼎立包装有限公司 | 一种防爆多层纸板及其加工工艺 |
| CN116461154B (zh) * | 2023-04-13 | 2023-11-03 | 淮安市金福隆包装有限公司 | 一种在瓦楞纸和面纸中间加强力线的装置 |
Family Cites Families (31)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE164588C (de) * | ||||
| CH27393A (de) * | 1902-12-01 | 1904-01-15 | Oscar Hoffmann | Papier oder Pappe mit Verstärkungseinlagen |
| US958450A (en) * | 1908-07-24 | 1910-05-17 | Henry Robbins Wardell | Bituminous structural material. |
| CH51817A (de) * | 1910-04-22 | 1911-09-16 | Hermann Schlisske | Armierte Pappe |
| US1335058A (en) * | 1918-09-09 | 1920-03-30 | Paper Products Machine Company | Reinforced paper |
| US1464155A (en) * | 1921-10-06 | 1923-08-07 | Paper Products Machine Company | Composite fabric |
| DE483735C (de) * | 1926-05-27 | 1929-10-04 | Otto Engel | Verfahren zur Herstellung wasserdichter Stoffe ebenen oder auch wellenfoermigen Querschnitts |
| US2290386A (en) * | 1940-08-02 | 1942-07-21 | Walter R Schindler | Machine for manufacturing tying members |
| US2750030A (en) * | 1949-12-15 | 1956-06-12 | Permacel Tape Corp | Hyper-strength pressure-sensitive adhesive strapping tape |
| CH266611A (de) * | 1950-11-06 | 1950-02-15 | Schaefer Friedrich | Verfahren zur Herstellung von wenigstens zweilagigen Streifen aus Band, bei welchen Streifen zwischen zwei benachbarten Lagen ein Draht eingebettet ist. |
| US2763586A (en) * | 1952-12-23 | 1956-09-18 | Dayton Rubber Company | Composite sheet material |
| US2780572A (en) * | 1953-03-03 | 1957-02-05 | Arthur E Carlson | Method of making reinforced sheet material |
| US2826237A (en) * | 1955-08-09 | 1958-03-11 | Arthur E Carlson | Longitudinally reinforced backings and apparatus for producing the same |
| DE1511300A1 (de) * | 1957-11-10 | 1969-07-17 | Waldhof Zellstoff Fab | Verfahren zur Herstellung fadenverstaerkter laminierter Papiere |
| FR1195139A (fr) * | 1958-04-28 | 1959-11-16 | Matière souple telle que papier ou tissus | |
| FR74875E (fr) * | 1959-01-28 | 1961-03-03 | Matière souple telle que papier ou tissus | |
| US3188813A (en) * | 1961-03-23 | 1965-06-15 | Us Rubber Co | Article and process for wave damping |
| US3250655A (en) * | 1961-08-28 | 1966-05-10 | Adler Solomon | Method for producing non-woven fabric |
| AT253345B (de) * | 1962-10-18 | 1967-04-10 | Drahtwerke Roesler K G | Verfahren und Vorrichtung zur Herstellung einer mehrschichtigen bewehrten Materialbahn, vorzugsweise Papierbahn |
| BE638743A (de) * | 1963-10-15 | |||
| US3508992A (en) * | 1963-12-26 | 1970-04-28 | Sealed Air Corp | Method of making laminated material having cells between the layers |
| CH477902A (de) * | 1967-08-16 | 1969-09-15 | Sulzer Ag | Verfahren zur Herstellung von für Stoffaustauschkolonnen bestimmten Packungskörpern |
| US3591434A (en) * | 1967-08-21 | 1971-07-06 | Swirltex Inc | Bi-axial laminated non-woven fabric and method of manufacture |
| US3687764A (en) * | 1967-09-27 | 1972-08-29 | Ethyl Corp | Method for producing a multilayer reinforced plastic sheet material |
| NL6815758A (de) * | 1967-11-10 | 1969-05-13 | ||
| US3578544A (en) * | 1968-01-18 | 1971-05-11 | Phillips Petroleum Co | Reinforced microporous laminates |
| US3562083A (en) * | 1968-02-09 | 1971-02-09 | Fred E Schroder | Prestressed corrugated panel and method of making same |
| US3616133A (en) * | 1968-12-23 | 1971-10-26 | Kimberly Clark Co | Heavy-duty wipe |
| US3811987A (en) * | 1969-02-24 | 1974-05-21 | Cons Paper Ltd | Apparatus for bonding thermoplastic materials and products thereof |
| US3886019A (en) * | 1970-05-20 | 1975-05-27 | Alton Box Board Co | Method of making laminated corrugated paperboard |
| US3674620A (en) * | 1970-05-25 | 1972-07-04 | Butler Manufacturing Co | Reinforced plastic panel and method of making the same |
-
1975
- 1975-07-25 US US05/599,142 patent/US4203790A/en not_active Expired - Lifetime
-
1976
- 1976-01-01 AR AR263756A patent/AR208378A1/es active
- 1976-06-16 ZA ZA763591A patent/ZA763591B/xx unknown
- 1976-06-23 CA CA255,504A patent/CA1068204A/en not_active Expired
- 1976-06-29 NL NLAANVRAGE7607112,A patent/NL174851C/xx not_active IP Right Cessation
- 1976-07-08 BE BE168727A patent/BE843900A/xx not_active IP Right Cessation
- 1976-07-12 NZ NZ181434A patent/NZ181434A/xx unknown
- 1976-07-13 CH CH896176A patent/CH616366A5/fr not_active IP Right Cessation
- 1976-07-13 FR FR7621406A patent/FR2338138A1/fr active Granted
- 1976-07-14 DE DE2632103A patent/DE2632103C2/de not_active Expired
- 1976-07-14 AU AU15876/76A patent/AU502052B2/en not_active Expired
- 1976-07-15 AT AT0523276A patent/AT363310B/de not_active IP Right Cessation
- 1976-07-21 BR BR7604726A patent/BR7604726A/pt unknown
- 1976-07-23 IT IT50586/76A patent/IT1066027B/it active
- 1976-07-23 MX MX165631A patent/MX143106A/es unknown
- 1976-07-23 GB GB30722/76A patent/GB1557212A/en not_active Expired
- 1976-07-23 SE SE7608390A patent/SE429351B/xx unknown
- 1976-07-23 JP JP51088605A patent/JPS5913983B2/ja not_active Expired
- 1976-07-23 ES ES450084A patent/ES450084A1/es not_active Expired
-
1981
- 1981-06-04 HK HK246/81A patent/HK24681A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| AR208378A1 (es) | 1976-12-20 |
| DE2632103A1 (de) | 1977-02-10 |
| FR2338138A1 (fr) | 1977-08-12 |
| GB1557212A (en) | 1979-12-05 |
| NL174851B (nl) | 1984-03-16 |
| JPS5217997A (en) | 1977-02-10 |
| NL7607112A (nl) | 1977-01-27 |
| AU502052B2 (en) | 1979-07-12 |
| NL174851C (nl) | 1984-08-16 |
| ES450084A1 (es) | 1977-11-16 |
| MX143106A (es) | 1981-03-17 |
| SE7608390L (sv) | 1977-01-26 |
| DE2632103C2 (de) | 1983-11-17 |
| AU1587676A (en) | 1978-01-19 |
| ATA523276A (de) | 1980-12-15 |
| HK24681A (en) | 1981-06-12 |
| ZA763591B (en) | 1977-05-25 |
| JPS5913983B2 (ja) | 1984-04-02 |
| NZ181434A (en) | 1980-02-21 |
| US4203790A (en) | 1980-05-20 |
| SE429351B (sv) | 1983-08-29 |
| CA1068204A (en) | 1979-12-18 |
| IT1066027B (it) | 1985-03-04 |
| BR7604726A (pt) | 1977-08-02 |
| AT363310B (de) | 1981-07-27 |
| FR2338138B1 (de) | 1984-08-17 |
| BE843900A (fr) | 1976-11-03 |
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