EP0132110B1 - Verfahren zur Herstellung von Verbundfäden - Google Patents

Verfahren zur Herstellung von Verbundfäden Download PDF

Info

Publication number
EP0132110B1
EP0132110B1 EP84304721A EP84304721A EP0132110B1 EP 0132110 B1 EP0132110 B1 EP 0132110B1 EP 84304721 A EP84304721 A EP 84304721A EP 84304721 A EP84304721 A EP 84304721A EP 0132110 B1 EP0132110 B1 EP 0132110B1
Authority
EP
European Patent Office
Prior art keywords
composite
net
component
sheath
low melting
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.)
Expired
Application number
EP84304721A
Other languages
English (en)
French (fr)
Other versions
EP0132110A3 (en
EP0132110A2 (de
Inventor
Masahiko Matsuno
Katsuhiro Shishikura
Kunio Gohda
Isao Fujimura
Taizoh Sugihara
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JNC Corp
Original Assignee
Chisso Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Chisso Corp filed Critical Chisso Corp
Publication of EP0132110A2 publication Critical patent/EP0132110A2/de
Publication of EP0132110A3 publication Critical patent/EP0132110A3/en
Application granted granted Critical
Publication of EP0132110B1 publication Critical patent/EP0132110B1/de
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
    • D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
    • D01F8/06—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyolefin as constituent
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
    • D01D5/30—Conjugate filaments; Spinnerette packs therefor

Definitions

  • This invention relates to a process for producing composite monofilaments (hereinafter abbreviated to "composite MF”) having heat-adhesive properties and excellent strengths. More particularly it relates to a process for producing composite MF of polyolefin resins having heat-adhesive properties and excellent strengths, obtained by using a low melting polylefin resin component on the sheath side and a high melting polypropylene (hereinafter abbreviated to "high melting PP”) components on the core side, and melt-extruding these components through a sheath-and-core type spinneret, followed by cooling, solidifying and stretching.
  • composite MF composite monofilaments
  • high melting PP high melting polypropylene
  • monofilaments as a single component obtained by melt-extruding a polyolefin resin, followed by cooling and then stretching are superior in mechanical strengths, chemical strengths, corrosion resistance, water resistance, mold-ability, etc.; hence they have been fabricated into ropes, materials of fishing such as fishermen's nets, nets for land such as insect screening, windbreak net, golf net, light-shielding net, filter, sheet for public works, etc, and the resulting products have been widely used.
  • MF monofilaments
  • the strength of each MF in the longitudinal direction and that in the lateral direction are both 0.26 5 N/tex (3g/d) or more
  • the strength of each MF of the above particular nets in the longitudinal and that in the lateral direction are both 0.13 2 N/tex (1.5 g/d) or less, that is, extremely lower; thus a problem has been raised that the particular nets could have been applied only to extremely limited uses such as use for packaging simple, light-weight goods.
  • USA-A-4285748 there is disclosed a nonwoven fabric formed from self-bonded sheath/core composite polyolefin filaments.
  • the sheath:core ratio is from 5:55 to 30:70 but we have found that for composite filament suitable for making nets the sheath:core ratio should be from 30:70 to 60:40 to give acceptable spinnability and stretchability and adequate backing force.
  • the thickening and draw ratio of 'composite filaments suitable for making nets should be from 100 to 1000 denier (11.1 to 111.1 tex) and from 6 to 9 respectively, in contrast to a thicker of 10 to 20 denier (1.11 to 2.27 tex) and a draw ratio of 2 to 6 specified in US-A-4285748.
  • the object of the present invention is to provide a process for producing composite MF having heat-adhesive properties, superior strengths, no curl and no peeling between the layers thereof.
  • the present invention resides in a process for producing a composite MF having heat-adhesive properties and superior strengths which comprises subjecting a low melting polyolefin resin having a melting point of 135°C or lower, selected from high density polyethylene homopolymer (HDPE) or copolymer composed mainly of ethylene, linear chain low density polyethylene (LLDPE) homopolymer, low melting polypropylene (PP) homopolymer or copolymer composed mainly of propylene and mixtures of the foregoing, and a high melting polypropylene homopolymer or copolymer composed mainly of propylene having a melting point of 150°C or higher, to a sheath-and-core type composite spinning using the former low melting polyolefin resin as the sheath component and the latter high melting polypropylene homopolymer or copolymer composed mainly of propylene as the core component, into an unstretched monofilament, the melt flow index ratio of the former low melting polyolefin
  • HDPE and polypropylene used in the present invention
  • homopolymer of ethylene or propylene is not only used, but also copolymers of ethylene with propylene, butene-1, etc. composed mainly of ethylene or copolymers of propylene with ethylene, butene-1, etc. composed mainly of propylene may be preferably used.
  • added additives which are usually added to polyolefin resins, such as stabilizers, e.g. antioxidant, ultraviolet absorber, etc., coloring agent, lubricant, antistatic agent, delustering agent, etc.
  • mixing may be carried out employing a conventional means such as extruder, Banbury @ mixer, tumbler mixer, Henschel° mixer, etc. and in a conventional manner.
  • composite extrusion method and apparatus although known techniques may be employed such as composite extrusion by means of two extruders and composite spinnerets of side-by- side or sheath-and-core type, it is preferred in the present invention to employ composite spinnerets of sheath-and-core type which is advantageous in the aspects of spinning, stretching stability and peel resistance of the boundary surface layer between the sheath component and the core component of stretched composite MF.
  • the high melting PP and the low melting PP are based on MFR measured according to ASTMS D 1238 (L), and HDPE and LLDPE are based on MI measured according to ASTM D 1238 (E).
  • the melt flow index (MFR) of the high melting PP used on the core side of the composite MF may be in the range of 0.3 to 15 which has been used for ordinary MF, but its melting point is required to be 150°C or higher, and as for the FR ratio of the low melting polyolefin resin component on the sheath side to the high melting PP on the core side, when the ratio is in the range of 1.5 to 7, the effectiveness of the present invention is remarkable. If the melting point of the core component is lower than 150°C, its strength as a basic performance of the core component is reduced, and also its shrink properties increase so that when a net prepared by knitting or weaving the above composite MF is subjected to heat set, shrink-deformation is notable.
  • the FR ratio is lower than 1.5, spinning and stretching properties are unstable and the resulting net is inferior in heat-adhesive properties. If is is higher than 7, the fluidity of the sheath component in the nozzle is different from that of the core component therein, and also there occurs a large stress strain due to the difference in the crystallization behaviour between the two components or the difference in the volume shrinkage between the two components during the process from molten state to cooling and solidification, so that extruded unstretched MF bends or curls at the exit of the nozzle to make spinnability inferior. Further since the difference between the stretching stress applied to the sheath and core components increases; hence stretching troubles such as stretching breakage, curling of stretched MF, etc. are liable to occur.
  • the low melting polyolefin resin used as the sheath component constitutes a component by which adhesive properties due to heat-melt adhesion are imparted to composite MF, and the effectiveness is fully exhibited by single use of HDPE, LLDPE or a low melting PP, but even when two or more kinds thereof are used in admixture, the same effectiveness as in the single use is exhibited. In this case, as for the combination of the components, combinations of polymers having similar fluidities are preferred. When a low melting point PP is used as the sheath component, its melting point is necessary to be 135°C or lower.
  • the melting point of the low melting polyolefin resin is preferably 80°C or higher and more preferably 100°C or higher.
  • the composite ratio of the sheath component to the core component is preferably in the range of 30:70 to 60:40. If the sheath comoponent is less than 30%, spinnability and stretchability are liable to be inferior, and also since the amount of the heat-adhesive component of the composite MF is reduced, the bonding force at the adhesion part of the mesh of the net becomes weak. On the other hand, if the core component is less than 40%, the strength of the core component as a basic element of the role thereof is reduced.
  • the stretching in the present invention general apparatus and process for stretching may be employed which have been employed for ordinary MF.
  • the stretch ratio is suitably in the range of 6 to 9 times the original length.
  • composite MF since its strength is structurally somewhat lower than that of ordinary MF, if the ratio is lower than 6 times, its strength is low, while if it exceeds 9 times, its strength is sufficient, but due to the fact that composite MF is poor in the compotability of polymers at the boundary surface thereof, the difference in stretchability between the sheath component and the core component becomes remarkable so that troubles such as turnover or peel of the sheath component occur during the stretching step and also it is liable to curl after stretching, which causes troubles of bad take-up during the take-up step such as bad take-up shape or getting out of take-up shape.
  • the composite MF of the present invention may usually be preferably used in a thickness of 11.1 to 111.1 tex (100 to 1,000 d).
  • the composite MF obtained according to the present invention retains strength characteristics similar to those of ordinary MF and is at the same time provided with heat-adhesive properties.
  • the net-form product having its mesh part bonded together by heat-adhesion obtained by subjecting a net-form material prepared by knitting or weaving the above composite MF, to heat treatment by way of a general means such as heating roll, heating calendar, hot air, steam treatment, etc., retains strengths similar to those of net-form products consisting of ordinary MF and hardly causes mesh deformation.
  • melt-extrusion was carried out at an extrusion temperature on the core side of 260°C, at an extrusion temperature on the sheath side of 240°C and at a composite spinneret temperature of 260°C, followed by spinning through cooling to obtain an unstretched composite filamant of sheath-and-core type having a composite ratio of 50:50, which was then stretched to 5 to 10 times by means of a wet type, heat stretching apparatus to obtain various kinds of composite MF of 50 tex (450 d).
  • PP having a m.p. of 161°C and a MFR of 3.1 spun was carried out under the same conditions as in Example 1 to obtain various unstretched composite filaments of sheath-and-core type, which were then stretched by means of a wet type, heat stretching apparatus to obtain composite MFs of 50 tex (450 d).
  • the spinnability and stretchability of the resulting composite MFs and evaluations of the heat-adhesive properties and the residual strength of net-form products prepared from the above composite MFs in the same manner as in Example 1 are shown in Table 3.
  • composite MFs were prepared under the same conditions as in Example 1.
  • the heat-adhesive properties and the residual strength of net-form properties and the residual strength of met-form products prepared from the above composite MFs were evaluated. The results are shown in Table 4.
  • a PP having a m.p. of 161°C and a MFR of 3.1 was used as a core component, and three kinds of mixed resins obtained by mixing the respective two of HDPE, LLDPE or a PP of m.p. 128°C in a ratio of 1:1 by means of a Henschel mixer, followed by extruding and granulating the mixtures by means of an extruder having a bore diameter of 40 mm were used as a sheath component, respectively. Evaluation was made as in Example 1. The results are shown in Table 5.
  • PPs having similar MFRs and various melting points were used as core component, and HDPE, LLDPE or a PP of m.p. 128°C was singly used as a sheath component. Evaluation was made as in Example 1. The results are shown in Table 6.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Multicomponent Fibers (AREA)
  • Treatment Of Fiber Materials (AREA)

Claims (5)

1. Ein Verfahren zum Herstellen eines monofilen Verbundfadens mit einer Dicke von 11.1 bis 111.1 tex mit den Verfahrensschritten: man unterwirft ein niederschmelzendes Polyolefinharz mit einem Schmelzpunkt von 135°C oder geringer, ausgewählt aus einem Polyäthylenkomopolymerisat hoher Dichte oder einem Copolymerisat im wesentlichen aud Äthylen, linearkettigem Polyäthylenkompolymerisat hoher Dichte, nieder schmelzendem Polypropylenkomopolymerisat oder einem Copylymerisat im wesentlichen aus Propylen und Mischungen des Voranstehenden, und ein hoschmelzendes Polypropylen-Homopolymerisat oder -Copolymerisat im wesentlichen aus Propylen mit einem Schmelzpunkt von 150°C oder höher einem Mantel-und-Kern-Verbundspinnvorgang, wobei das erstere niederschmelzende Polyole-finharz als Mantelkomponente und das letztere hochschmelzende Polypropylen-/Compolymerisat oder -Copolymerisat als Kernkomponente benutzt wird, man bildet hierbei zunächst ein ungestrecktes Monofilament, wobei das Schlemzflußindexverhältnis der ersteren niederschmelzenden Polyolefinharzkomponente zur letzteren hochschmelzenden Polypropylenkomponente im Bereich von 1.5 zu 7 und das Verbundverhältnis in Bereich 30:70 bis 60:40 liegen, und streckt den ungestreckten Verbundfaden auf das 6- bus 9-Fache seiner ursprünglichen Länge.
2. Ein Verfahren nach Anspruch 1, wobei das niederschmelzende Polyolefinharz und/oder das hochschmelzende Polypropylen ein Homopolymerisat ist.
3. Ein Verfahren nach Anspruch 1 oder 2, wobei der Schmelzpunkt des niederschmelzenden Polyolefinharzes 80° oder höher ist.
4. Ein Netz aus monofilen Verbundfäden, die ihrerseits nach einem der Ansprüche 1, 2 oder 3 hergestellt sind.
5. Ein Netz nach Anspruch 4, wobei das Netz durch Weben, Stricken oder Wirken der monofilen Verbundfäden erzeugt und dann das netzförmige Produkt einer Wärmebehandlung unterworfen wird.
EP84304721A 1983-07-14 1984-07-11 Verfahren zur Herstellung von Verbundfäden Expired EP0132110B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP58128666A JPS6021908A (ja) 1983-07-14 1983-07-14 複合モノフイラメントの製造法
JP128666/83 1983-07-14

Publications (3)

Publication Number Publication Date
EP0132110A2 EP0132110A2 (de) 1985-01-23
EP0132110A3 EP0132110A3 (en) 1985-06-05
EP0132110B1 true EP0132110B1 (de) 1988-01-07

Family

ID=14990434

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84304721A Expired EP0132110B1 (de) 1983-07-14 1984-07-11 Verfahren zur Herstellung von Verbundfäden

Country Status (4)

Country Link
EP (1) EP0132110B1 (de)
JP (1) JPS6021908A (de)
KR (1) KR870000442B1 (de)
DE (1) DE3468448D1 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5336552A (en) 1992-08-26 1994-08-09 Kimberly-Clark Corporation Nonwoven fabric made with multicomponent polymeric strands including a blend of polyolefin and ethylene alkyl acrylate copolymer
US5382400A (en) 1992-08-21 1995-01-17 Kimberly-Clark Corporation Nonwoven multicomponent polymeric fabric and method for making same
US5405682A (en) 1992-08-26 1995-04-11 Kimberly Clark Corporation Nonwoven fabric made with multicomponent polymeric strands including a blend of polyolefin and elastomeric thermoplastic material
US5643662A (en) 1992-11-12 1997-07-01 Kimberly-Clark Corporation Hydrophilic, multicomponent polymeric strands and nonwoven fabrics made therewith
US6500538B1 (en) 1992-12-28 2002-12-31 Kimberly-Clark Worldwide, Inc. Polymeric strands including a propylene polymer composition and nonwoven fabric and articles made therewith
WO2019119736A1 (zh) * 2017-12-19 2019-06-27 广东蒙泰高新纤维股份有限公司 一种高强度双组份皮芯结构复合长丝及其制备方法

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61194221A (ja) * 1985-02-18 1986-08-28 Chisso Corp 弾性複合繊維およびこれを用いた布
JPH0819570B2 (ja) * 1986-09-12 1996-02-28 チッソ株式会社 熱接着性複合繊維及びその製造方法
JPS63266688A (ja) * 1987-04-24 1988-11-02 Hitachi Ltd 磁気記録装置
JPS63280543A (ja) * 1987-05-13 1988-11-17 Nec Corp 通信制御装置
JPS643549U (de) * 1987-06-29 1989-01-10
JPS6426754A (en) * 1987-07-22 1989-01-30 Showa Denko Kk Cloth for shrink packaging
JPH0529886Y2 (de) * 1987-07-24 1993-07-30
JPH0192415A (ja) * 1987-10-02 1989-04-11 Unitika Ltd 熱接着繊維及びその不織布
DE3813773A1 (de) * 1988-04-23 1989-11-02 Henkel Kgaa Waschmittelerzeugnis
DK245488D0 (da) * 1988-05-05 1988-05-05 Danaklon As Syntetisk fiber samt fremgangsmaade til fremstilling deraf
JPH07103507B2 (ja) * 1988-08-23 1995-11-08 ユニチカ株式会社 熱接着性長繊維からなる不織布
JP2612350B2 (ja) * 1989-11-27 1997-05-21 宇部日東化成 株式会社 伸縮性複合繊維
JPH06330444A (ja) * 1993-05-21 1994-11-29 Ube Nitto Kasei Co Ltd ポリプロピレン繊維系マット
JP3814289B2 (ja) * 1997-03-25 2006-08-23 三井化学株式会社 結束材
JP2003518205A (ja) 1999-12-21 2003-06-03 キンバリー クラーク ワールドワイド インコーポレイテッド 細いデニールの多成分繊維
JP6743266B1 (ja) * 2019-12-25 2020-08-19 宇部エクシモ株式会社 黒色合成繊維糸
CN114150411A (zh) * 2021-10-26 2022-03-08 浙江龙仕达科技股份有限公司 一种高强度复合包芯纱的制备方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5212830B2 (de) * 1972-11-25 1977-04-09
JPS5386836A (en) * 1976-12-29 1978-07-31 Chisso Corp Crimpless, hot melt conjugate fiber and its production
US4285748A (en) * 1977-03-11 1981-08-25 Fiber Industries, Inc. Selfbonded nonwoven fabrics
JPS53147816A (en) * 1977-05-24 1978-12-22 Chisso Corp Hot-melt fiber of polypropylene
JPS6024205B2 (ja) * 1979-04-11 1985-06-12 チッソ株式会社 難燃性複合繊維とその製造方法
JPS5658009A (en) * 1979-10-09 1981-05-20 Chisso Corp Preparation of flame-retardant composite fiber
JPS607722B2 (ja) * 1980-08-20 1985-02-26 チッソ株式会社 難燃性の複合繊維及びその製造方法
JPS57101023A (en) * 1980-12-10 1982-06-23 Daiwa Spinning Co Ltd Sheath-core composite polyolefin fiber containing inorganic material and its preparation

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5382400A (en) 1992-08-21 1995-01-17 Kimberly-Clark Corporation Nonwoven multicomponent polymeric fabric and method for making same
US5418045A (en) 1992-08-21 1995-05-23 Kimberly-Clark Corporation Nonwoven multicomponent polymeric fabric
US5336552A (en) 1992-08-26 1994-08-09 Kimberly-Clark Corporation Nonwoven fabric made with multicomponent polymeric strands including a blend of polyolefin and ethylene alkyl acrylate copolymer
US5405682A (en) 1992-08-26 1995-04-11 Kimberly Clark Corporation Nonwoven fabric made with multicomponent polymeric strands including a blend of polyolefin and elastomeric thermoplastic material
US5425987A (en) 1992-08-26 1995-06-20 Kimberly-Clark Corporation Nonwoven fabric made with multicomponent polymeric strands including a blend of polyolefin and elastomeric thermoplastic material
US5643662A (en) 1992-11-12 1997-07-01 Kimberly-Clark Corporation Hydrophilic, multicomponent polymeric strands and nonwoven fabrics made therewith
US6500538B1 (en) 1992-12-28 2002-12-31 Kimberly-Clark Worldwide, Inc. Polymeric strands including a propylene polymer composition and nonwoven fabric and articles made therewith
WO2019119736A1 (zh) * 2017-12-19 2019-06-27 广东蒙泰高新纤维股份有限公司 一种高强度双组份皮芯结构复合长丝及其制备方法

Also Published As

Publication number Publication date
EP0132110A3 (en) 1985-06-05
JPS633969B2 (de) 1988-01-27
KR850001316A (ko) 1985-03-18
DE3468448D1 (en) 1988-02-11
JPS6021908A (ja) 1985-02-04
KR870000442B1 (ko) 1987-03-10
EP0132110A2 (de) 1985-01-23

Similar Documents

Publication Publication Date Title
EP0132110B1 (de) Verfahren zur Herstellung von Verbundfäden
DE60313305T2 (de) Reversible, thermofixierte, elastische fasern, herstellungsverfahren und daraus hergestellte artikel
US4420534A (en) Conductive composite filaments and methods for producing said composite filaments
US4457973A (en) Conductive composite filaments and methods for producing said composite filaments
US4477516A (en) Non-woven fabric of hot-melt adhesive composite fibers
US5032442A (en) Fibrillated weatherproof webs having network structure, nonwoven fabrics made from the webs, and processes for the production of the webs and nonwoven fabrics
US3900652A (en) Male piece of the velvet type fastener
US20170354907A1 (en) Woven geotextile filtration fabrics including core-sheath spun yarns
DE3315360A1 (de) Schmelzklebende fasern
JPH03220308A (ja) 解繊維とその製造方法およびこの解繊維を用いた解繊維集合体とその製造方法
DE2739782A1 (de) Verfahren zur herstellung eines steifen, durchlaessigen stoffes und die nach diesem verfahren hergestellten stoffe
JPH02160945A (ja) 接着処理されていない仕上処理布帛
US4297413A (en) Concentric composite conjugate yarns and a process for manufacturing same
JPH0346303B2 (de)
JP2003089942A (ja) ネット状物
US20200030728A1 (en) Woven geotextile filtration fabrics including core-sheath spun yarns
JPS633968B2 (de)
JP2000144562A (ja) 被覆合成繊維糸条によるメッシュ体
JPH0151570B2 (de)
JPH0641648B2 (ja) 潜在嵩高性マルチフイラメントの製造法及びその紡糸口金
WO2020203286A1 (ja) 延伸複合繊維、不織布及び延伸複合繊維の製造方法
JP4081338B2 (ja) ポリプロピレン系流体撹乱加工繊維及びその製造方法
EP1860214B1 (de) Reversible thermofixierte elastische Fasern, Herstellungsverfahren und daraus hergestellte Artikel
JPH0433977A (ja) 粘着テープ用基布及びその製造方法
JPS6078733A (ja) ポリオレフインタ−ポリン

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19840719

AK Designated contracting states

Designated state(s): DE FR GB SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Designated state(s): DE FR GB SE

17Q First examination report despatched

Effective date: 19860220

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB SE

REF Corresponds to:

Ref document number: 3468448

Country of ref document: DE

Date of ref document: 19880211

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
EAL Se: european patent in force in sweden

Ref document number: 84304721.8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19970702

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19970709

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19970716

Year of fee payment: 14

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980711

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980712

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19980711

EUG Se: european patent has lapsed

Ref document number: 84304721.8

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990331

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20010702

Year of fee payment: 18

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030201