EP0024703A1 - Procédé pour la préparation de matériaux pour filtre - Google Patents

Procédé pour la préparation de matériaux pour filtre Download PDF

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Publication number
EP0024703A1
EP0024703A1 EP80105000A EP80105000A EP0024703A1 EP 0024703 A1 EP0024703 A1 EP 0024703A1 EP 80105000 A EP80105000 A EP 80105000A EP 80105000 A EP80105000 A EP 80105000A EP 0024703 A1 EP0024703 A1 EP 0024703A1
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EP
European Patent Office
Prior art keywords
substrate
solvent
radiation
irradiation
resin
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.)
Granted
Application number
EP80105000A
Other languages
German (de)
English (en)
Other versions
EP0024703B2 (fr
EP0024703B1 (fr
Inventor
Manfred Römer
Werner Zeh
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.)
Morton Thiokol GmbH
Original Assignee
Morton Thiokol GmbH
Duerr GmbH
Duerr Anlagenbau GmbH
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6079047&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0024703(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Morton Thiokol GmbH, Duerr GmbH, Duerr Anlagenbau GmbH filed Critical Morton Thiokol GmbH
Priority to AT80105000T priority Critical patent/ATE3072T1/de
Publication of EP0024703A1 publication Critical patent/EP0024703A1/fr
Application granted granted Critical
Publication of EP0024703B1 publication Critical patent/EP0024703B1/fr
Publication of EP0024703B2 publication Critical patent/EP0024703B2/fr
Expired legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M14/00—Graft polymerisation of monomers containing carbon-to-carbon unsaturated bonds on to fibres, threads, yarns, fabrics, or fibrous goods made from such materials
    • D06M14/18—Graft polymerisation of monomers containing carbon-to-carbon unsaturated bonds on to fibres, threads, yarns, fabrics, or fibrous goods made from such materials using wave energy or particle radiation
    • D06M14/20—Graft polymerisation of monomers containing carbon-to-carbon unsaturated bonds on to fibres, threads, yarns, fabrics, or fibrous goods made from such materials using wave energy or particle radiation on to materials of natural origin
    • D06M14/22—Graft polymerisation of monomers containing carbon-to-carbon unsaturated bonds on to fibres, threads, yarns, fabrics, or fibrous goods made from such materials using wave energy or particle radiation on to materials of natural origin of vegetal origin, e.g. cellulose or derivatives thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
    • B05C9/08—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation
    • B05C9/12—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation the auxiliary operation being performed after the application
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
    • B05C9/08—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation
    • B05C9/14—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation the auxiliary operation involving heating or cooling
    • 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
    • D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
    • D21H25/04—Physical treatment, e.g. heating, irradiating
    • D21H25/06—Physical treatment, e.g. heating, irradiating of impregnated or coated paper

Definitions

  • Nonwoven or paper substrates treated in this way have improved mechanical properties and improved chemical resistance compared to the untreated substrates. They can be used in various fields and are particularly suitable, for example, as filter fleeces or filter papers and for the production of filter materials, such as oil and air filters for motor vehicles.
  • filter fleeces have been impregnated with uncrosslinked phenolic resins, which were then crosslinked or hardened at elevated temperature.
  • Such a procedure has various disadvantages, which are mainly due to the complex hardening process.
  • hardening must take place at high temperatures in the range of 160 to 180 ° C.
  • hardening zones of 30 to 50 m in length and residence times of 60 to 80 minutes are required, which leads to a high energy expenditure, a high outlay on equipment and one severe environmental pollution due to the phenolic resin vapors released during the condensation.
  • the invention is therefore based on the object of providing an economical process for covering nonwoven and paper substrates with resins, which can be carried out with low energy expenditure and with little expenditure on apparatus and leads to end products with superior properties.
  • various polymers can be crosslinked by high-energy radiation, for example by UV radiation, ⁇ , ⁇ and V radiation. Such crosslinking reactions have hitherto been used, for example, in the curing of paints.
  • electron beam curing can also be applied to the coating of nonwoven and paper substrates, it also being possible to achieve partial coating while maintaining a residual permeability of the treated substrates.
  • the invention therefore relates to a method for producing paper or nonwoven substrates covered with resins, by impregnating the substrates with a resin and / or monomer and then curing.
  • the method according to the invention is characterized in that the substrate is impregnated with a solution or dispersion of at least one resin and / or monomer curable by electron radiation and the curing is effected by electron radiation. The solvent is removed before curing.
  • the substrate to be treated is first impregnated with a solution or dispersion, preferably a solution, a resin or monomers in a suitable inert organic liquid.
  • Compounds curable by electron radiation are suitable as monomers or resins.
  • Particularly suitable monomers are polyacrylated and / or polymethacrylated polyols, polyacrylated polyols being preferred because of the higher reaction rate.
  • hydroxyl groups of the polyols mentioned can be wholly or partially esterified by acrylic acid and / or methacrylic acid.
  • usable monomers according to the invention are trimethylolpropane triacrylate, hexanediol diacrylate, pentaerythritol tetraacrylate, pentaerythritol triacrylate, hexane-1,6-diol diacrylate, Diäthylenglykoldiacrylat, Triäthylenglykoldiacrylat, Tetraäthylenglykoldiacrylat, tripropylene glycol diacrylate, 2-Hydroxäthylacrylat, 2-hydroxypropyl acrylate, and Hexandiolmonoacrylat Butandiolmonoacrylate and the corresponding methacrylates or mixed acrylate Methacrylates.
  • the monomers can be used alone or in a mixture, if appropriate with high or low molecular weight prepolymers.
  • Particularly suitable monomers are pentaerythritol triacrylate or pentaerythritol acrylate mixtures with an average degree of esterification of 3 to 3.3 and with a viscosity of 600 to 1200 mPa.s (measured at 20 ° C. with the Brookfield viscometer, type RVT).
  • Suitable resins are high or low molecular weight resins or oligomers which are soluble in the inert organic liquids used. Examples of this are soluble polyurethane acrylates formed from the aforementioned hydroxy-functional acrylate monomers.
  • the molecular weight of such resins or oligomers is preferably in the range from 800 to 8000 and their viscosities go from 1000 to 50,000 mPa.s.
  • the content of acrylic and / or methacrylic unsaturated monomer units is, for example, 2-6 per molecule.
  • Resins of this type are produced by customary procedures, for example as described in DE-OS 25 30 896 and DE-OS 25 42 314.
  • a polyol is reacted with a diisocyanate.
  • the free NCO group content is then saturated with hydroxy-functional acrylate or methacrylate monomers.
  • the person skilled in the art can select amounts and reaction conditions such that the desired molecular weights and the desired content of acrylic and / or methacrylic unsaturated monomer units are achieved.
  • the viscosities can be varied, for example, by appropriate dilution of the resins with monomers.
  • the following raw materials can be used as starting materials for the polyurethane acrylates which can be used, for example, as resins or oligomers:
  • Suitable inert organic liquids for dissolving or dispersing the monomers or resins are customary inert organic solvents, such as aliphatic alcohols with, for example, 1 to 6 carbon atoms, in particular methanol and ethanol, aliphatic ketones with, for example, 3 to 6 carbon atoms, in particular dimethyl ketone and methyl ethyl ketone, and esters, in particular Alkyl acetate, for example with 1 to 4 carbon atoms in the alkyl part, for example Methyl acetate and ethyl acetate.
  • solvents can be used either alone or as a mixture.
  • the monomer and / or resin is used in the solvent to impregnate the nonwoven or paper substrates in concentrations of 1.0 to 50% by weight, based on the sum of the weight of monomers and / or resin and solvent.
  • the solutions thus contain 1.0 to 50 parts by weight of monomer and / or resin and 99 to 50 parts by weight of solvent. Preferred ranges are 2.0 to 40 parts by weight of monomer and / or resin and 98.0 to 60 parts by weight of solvent. For example, 10, 20, 30, 40 or 50 parts by weight of monomer and / or resin and 90, 80, 70, 60 or 50 parts by weight of solvent can be used.
  • concentration of the monomer and / or resin in the Ultimately, solvent depends on the desired degree of coverage of the substrate with the monomer or resin.
  • the substrate to be treated can be impregnated in any way with the solution or the dispersion of the monomer and / or resin in the solvents mentioned. Dipping treatment is preferably carried out. After the immersion treatment, the substrate passes through a draining zone and a drying zone, in which temperatures of approximately 120 to 140 ° C. are maintained, depending on the solvent. The solvent is recovered in the pure state from the drying zone and can be used again for the same purpose or for other purposes.
  • the amount of resin or monomer remaining on the substrate is independent of the immersion time in the solution and depends only on the concentration of the solution used.
  • concentration of the solution used therefore depends on the desired degree of coverage or the desired properties, such as the degree of permeation of the nonwoven or filter material to be produced, within the ranges specified above.
  • preferred ranges for the coating are 5 to 45% by weight, in particular 5 to 40% by weight, for example 10 to 25% by weight or 15, 25 or 45% by weight, based on the mass of the substrate.
  • the following resin / oligomer concentrations generally give the following assignments (measured as an increase in nonwoven mass in%):
  • nonwoven or paper materials pretreated in this way are stable in storage.
  • treated nonwoven or paper webs can be transported and stored in the form of rolls. Even if such rolls are stored in a side-by-side form for longer periods before crosslinking, no tendency of the impregnated material to migrate due to gravity is observed, rather the applied uncured monomer or resin remains distributed evenly over the substrate.
  • the materials hardened according to the invention are particularly easy to process. For example, they can be easily processed into folded forms, whereby the tendency to form fractures is reduced in comparison with the products treated and hardened conventionally with phenolic resins. In addition to the improved mechanical and chemical resistance, this also prevents the formation of unwanted dusts. In addition to the resulting cleaning problems, such dusts also pose a health risk during processing, since phenolic products are to be considered as carcinogenic substances.
  • the nonwoven or paper materials impregnated according to the invention are finally hardened before or after a possible finishing treatment.
  • the unsaturated acrylic resin is cured by radical chain polymerization, which leads to chain growth with a high three-dimensional degree of branching.
  • the substrates subjected to the impregnation, draining and drying treatment are subjected to a short-term irradiation with high-energy jets of a low dose.
  • Electron or ⁇ radiation is preferably used for this purpose.
  • the radiation can be generated by conventional electron sources.
  • one or more multi-stage electron accelerators are used. It has proven to be particularly advantageous to carry out the hardening process using the inventive device described below.
  • acceleration voltages of approximately 150 to 500 kV have proven to be suitable.
  • acceleration voltages of 200 kV or Be use acceleration voltages from 150 to 200 kV with good success.
  • the penetration depth of the electron radiation depends on the specific weight of the impregnated substrate, that is to say on substrate + impregnated monomer and / or resin.
  • an electron voltage of 150 to 180 kV is sufficient to penetrate into a substrate impregnated according to the invention with a specific weight of 1 to a depth of approximately 120 ⁇ m to 160 ⁇ m.
  • the curing speed depends on the radiation dose used. In general, dosages from 0.1 to about 16 Mrad, preferably 0.1 to 10 Mrad, and particularly preferably from 1 to about 10 or from 4 to 8 Mrad have been found to be satisfactory for achieving favorable production speeds.
  • the substrate impregnated according to the invention is guided past a window in a web shape under an inert gas, such as nitrogen, for example, from which the electron beam emerges.
  • an inert gas such as nitrogen, for example.
  • the distance of the substrate from the exit window is generally 10 to 50 mm.
  • the method according to the invention can be applied to all customary nonwoven and paper materials.
  • cellulose-based and plastic-based nonwoven and paper materials can be coated with resins.
  • Filters are suitable, for example Papers based on cellulose or plastic and nonwoven materials based on cellulose and plastic, such as those used for the production of oil filters in the automotive industry, air filters in the carburetor or automotive industry, or technical filters for a wide variety of purposes, for example for hydraulic systems, and other technical Purposes such as air conditioners can be used.
  • the method according to the invention has proven to be particularly favorable when applied to products with a cellulose content or based on cellulose. A lignin content in the cellulose does not interfere.
  • a particular advantage that arises when using materials based on pure cellulose is that the products obtained remain practically white, so that when the finished products are used as filter materials, there is an indicator effect on possible contamination of the filter.
  • Such an indicator effect is not possible with conventional coating with phenolic resins, since white coloring is not retained with phenolic resins, but discoloration to a dark brown color occurs.
  • the procedure according to the invention makes it possible, depending on the amount of coverage of the substrates used with resins, to produce completely impregnated impermeable products up to products which, depending on the starting substrate used and the amount of partial coverage, have a controllable residual permeability and thus, for example, as filter materials for a wide variety of purposes , for example as an oil or air filter in the motor vehicle industry and as a filter for other technical purposes, such as hydraulic systems or air conditioning systems can find.
  • the substrates according to the invention prove to be resistant to mechanical, chemical and temperature influences.
  • the polymerized impregnating resins are present as resits, ie they are insoluble in organic solvents and no longer meltable, which is advantageous, for example, for use in motor vehicles at high engine temperatures.
  • the process according to the invention is characterized above all by the lower energy consumption, ie by the elimination of high curing temperatures and by the reduction in the outlay on equipment (no longer long furnace channels are required) and by the increased throughput speed.
  • the lower energy consumption ie by the elimination of high curing temperatures and by the reduction in the outlay on equipment (no longer long furnace channels are required) and by the increased throughput speed.
  • Further advantages are that the soaked intermediate products obtained are stable in storage and are not subject to mass migration.
  • the solvents used can be easily recovered and can be used for a wide variety of purposes.
  • the products obtained are particularly stable and are not subject to discoloration.
  • the thermal stress on the substrates is eliminated in the method according to the invention. It is therefore possible to use more sensitive substrates than before. Changes in the nonwoven materials used due to the ionizing effect of the electron beams were not found.
  • the shortest treatment time with a small space requirement of the system required for the method according to the invention results if at least the removal of the solder detergent and the electron beam irradiation of the substrate - optionally also the impregnation or coating with the solvent or with a solution of impregnation and solvent - is carried out in successive operations with the substrate strip preferably running continuously.
  • the invention relates to a device for carrying out the method according to the invention.
  • multi-part - housing assembly A is a supply or storage chamber or station for a material strip or substrate f to be treated, e.g. a roll of a nonwoven or paper filter material wound on a supply roll 10, B an immersion bath for soaking the substrate with an impregnating agent dissolved in a solvent or, if the material tape f is already coated with impregnating agent, with the solvent, C a Chamber for removing the solvent again using one or more nozzles 11, D an irradiation housing part containing the irradiation device 12 with electron accelerator 13, scanner 14 and irradiation channel 15 and E an outlet chamber or station for the treated material or substrate band f.
  • a material strip or substrate f to be treated e.g. a roll of a nonwoven or paper filter material wound on a supply roll 10
  • B an immersion bath for soaking the substrate with an impregnating agent dissolved in a solvent or, if the material tape f is already coated with impregnating agent, with the solvent
  • C
  • the material strip f running off the supply roll 10 at a certain speed is continuously passed through the housing parts or chambers or stations A to E.
  • the substrate is first impregnated with the radiation-crosslinkable impregnating agent, for example an acrylic resin, dissolved in a suitable solvent.
  • the solvent has the task of that To allow penetration of the impregnant into the 'substrate and thus fulfill a transport function for the impregnating agent.
  • the further impregnated substrate in chamber C is then freed from the solvent again by blowing through nozzles 11, for example hot air nozzles, which can be supplied by a blower arranged in or on the housing assembly, if necessary after passing through a drip zone. It can therefore be passed immediately thereafter through the radiation channel 15 of the radiation housing part D filled with an inert gas, for example nitrogen, in which the impregnating agent is crosslinked by electron radiation and the substrate is thereby hardened and stiffened.
  • an inert gas for example nitrogen
  • Electron irradiation with an acceleration voltage of 150 to 200 kV has proven to be particularly economical for the aforementioned purpose.
  • large-area irradiation with a beam region widened in the running direction and fanned out in the scanner 14 is provided.
  • a running speed of the material band f of, for example, 30 to 60 m / sec can be achieved.
  • This radiation is generally sufficient to achieve a penetration depth with a crosslinking of, for example, 120 to 160 g / m 2 in the impregnated layer.
  • Simple paths of the substrate strip f through the chambers B, C and E are shown in the schematic drawing. Additional routes can be used to extend these paths as required.
  • the invention is also not necessarily limited to the fact that the material or substrate band only contains the impregnating agent using a solvent in immersion bath B or in another suitable application device is soaked or coated. If the material or substrate tape that is wound onto the supply roll 10 or that is supplied in some other way is already externally coated with an impregnating agent, the immersion bath B may need only contain the required solvent. If the tape is already fed in a state in which it has already been treated with a dissolved impregnating agent, the immersion bath B can also be omitted entirely. A and / or B can also form part of the common housing assembly.
  • a filter paper was treated under the following conditions:
  • a product which can be used as a filter material and has no discoloration is obtained.
  • the times for dipping, draining, and evaporating are laboratory values that can be shortened in industrial practice.
  • the flask is equipped with a condenser (water-cooled), a stirrer with a patent plug, which allows the flask to be covered with nitrogen during the manufacturing process (due to the NCO / water reaction), and a thermometer for temperature control.
  • a condenser water-cooled
  • a stirrer with a patent plug, which allows the flask to be covered with nitrogen during the manufacturing process (due to the NCO / water reaction)
  • a thermometer for temperature control.
  • NCO target 6.24% ⁇ 0.1%.
  • the temperature is now kept at 75 ° C. for 3 hours.
  • NCO target 0.00%
  • item 4 is added and mixed thoroughly. After mixing, the reactor contents are cooled to approx. 40 ° C and the resin is filled.

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  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Paper (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Filtering Materials (AREA)
  • Reinforced Plastic Materials (AREA)
EP80105000A 1979-08-22 1980-08-22 Procédé pour la préparation de matériaux pour filtre Expired EP0024703B2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80105000T ATE3072T1 (de) 1979-08-22 1980-08-22 Verfahren und vorrichtung zur herstellung von filtermaterialien.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2933998A DE2933998C2 (de) 1979-08-22 1979-08-22 Verfahren und Vorrichtung zur Herstellung eines imprägnierten Papier- oder Vliessubstrats
DE2933998 1979-08-22

Publications (3)

Publication Number Publication Date
EP0024703A1 true EP0024703A1 (fr) 1981-03-11
EP0024703B1 EP0024703B1 (fr) 1983-04-13
EP0024703B2 EP0024703B2 (fr) 1986-07-30

Family

ID=6079047

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80105000A Expired EP0024703B2 (fr) 1979-08-22 1980-08-22 Procédé pour la préparation de matériaux pour filtre

Country Status (7)

Country Link
EP (1) EP0024703B2 (fr)
JP (1) JPS5663097A (fr)
AT (1) ATE3072T1 (fr)
BR (1) BR8005295A (fr)
DE (1) DE2933998C2 (fr)
FI (1) FI66942C (fr)
YU (1) YU205780A (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2156830A (en) * 1984-03-05 1985-10-16 British Library Board Treatment of archival material
GB2180248A (en) * 1985-09-12 1987-03-25 British Library The Treatment of archival material
EP1264930A1 (fr) * 2001-06-08 2002-12-11 The Procter & Gamble Company Fibres cellulosiques comprenant des résines activables par radiation
WO2007006292A3 (fr) * 2005-07-12 2007-04-19 Mahle Int Gmbh Moyen de filtrage conçu pour des applications techniques, et son procede de production
EP2350386A4 (fr) * 2008-10-03 2015-08-12 Filsen Pty Ltd Procédé pour fabriquer un matériau en feuille
CN106012674A (zh) * 2008-04-30 2016-10-12 希乐克公司 纸产品以及用于制造该产品的方法和系统
AU2015215953B2 (en) * 2008-10-03 2016-11-17 Filsen Pty Ltd Method for manufacturing sheet material

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3020333C2 (de) * 1980-05-29 1983-12-29 MD-Verwaltungsgesellschaft Nicolaus & Co-GmbH & Co KG, 8000 München Verfahren zur Herstellung von porösem Papier
DE3711807A1 (de) * 1987-04-08 1988-10-27 Bausch & Co Viktor Verfahren zum impraegnieren von flaechigen faserstoffen
DE102007019946A1 (de) * 2007-04-27 2008-10-30 Elringklinger Ag Flachdichtung und Verfahren zur Herstellung einer Flachdichtung
JP5444358B2 (ja) * 2007-10-05 2014-03-19 フィルセン プロプライエタリー リミテッド シート材の製造方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR66034E (fr) *
DE2029145A1 (de) * 1969-06-13 1970-12-23 Conservatome, Courbevoie (Frankreich) Verfahren zum Härten von Lacken und Farben durch Bestrahlung und Vorrichtung zur Durchführung des Verfahrens
DE2150374A1 (de) * 1970-10-09 1972-09-07 Berger Jenson & Nicholson Ltd Verfahren zum Haerten von Acrylharzen
FR2241384A1 (fr) * 1973-05-30 1975-03-21 Commissariat Energie Atomique
US4091167A (en) * 1973-09-21 1978-05-23 Rengo Co., Ltd. Method for preparing paper board having improved wet compression strength

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE520401A (fr) * 1952-06-03
BE606332A (fr) * 1959-04-01 1900-01-01

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR66034E (fr) *
DE2029145A1 (de) * 1969-06-13 1970-12-23 Conservatome, Courbevoie (Frankreich) Verfahren zum Härten von Lacken und Farben durch Bestrahlung und Vorrichtung zur Durchführung des Verfahrens
DE2150374A1 (de) * 1970-10-09 1972-09-07 Berger Jenson & Nicholson Ltd Verfahren zum Haerten von Acrylharzen
FR2241384A1 (fr) * 1973-05-30 1975-03-21 Commissariat Energie Atomique
US4091167A (en) * 1973-09-21 1978-05-23 Rengo Co., Ltd. Method for preparing paper board having improved wet compression strength

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2156830A (en) * 1984-03-05 1985-10-16 British Library Board Treatment of archival material
GB2180248A (en) * 1985-09-12 1987-03-25 British Library The Treatment of archival material
GB2180248B (en) * 1985-09-12 1989-11-29 British Library The Treatment of archival material by graft polymerisation with monomers
EP1264930A1 (fr) * 2001-06-08 2002-12-11 The Procter & Gamble Company Fibres cellulosiques comprenant des résines activables par radiation
WO2002101139A1 (fr) * 2001-06-08 2002-12-19 The Procter & Gamble Company Fibres cellulosiques comprenant des resines activables par rayonnement
US6887347B2 (en) 2001-06-08 2005-05-03 The Procter And Gamble Company Cellulose fibers comprising radiation activatable resin formalities
WO2007006292A3 (fr) * 2005-07-12 2007-04-19 Mahle Int Gmbh Moyen de filtrage conçu pour des applications techniques, et son procede de production
CN106012674A (zh) * 2008-04-30 2016-10-12 希乐克公司 纸产品以及用于制造该产品的方法和系统
CN106012674B (zh) * 2008-04-30 2018-10-16 希乐克公司 纸产品以及用于制造该产品的方法和系统
EP2350386A4 (fr) * 2008-10-03 2015-08-12 Filsen Pty Ltd Procédé pour fabriquer un matériau en feuille
AU2015215953B2 (en) * 2008-10-03 2016-11-17 Filsen Pty Ltd Method for manufacturing sheet material

Also Published As

Publication number Publication date
ATE3072T1 (de) 1983-04-15
EP0024703B2 (fr) 1986-07-30
EP0024703B1 (fr) 1983-04-13
FI66942B (fi) 1984-08-31
BR8005295A (pt) 1981-03-04
DE2933998A1 (de) 1981-03-12
DE2933998C2 (de) 1987-05-27
JPS5663097A (en) 1981-05-29
FI66942C (fi) 1984-12-10
FI802612A7 (fi) 1981-02-23
YU205780A (en) 1983-02-28

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