EP1581696B1 - Fabrication d un voile en fibres de verre et de cellulose en milieu cationique - Google Patents

Fabrication d un voile en fibres de verre et de cellulose en milieu cationique Download PDF

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Publication number
EP1581696B1
EP1581696B1 EP04700461A EP04700461A EP1581696B1 EP 1581696 B1 EP1581696 B1 EP 1581696B1 EP 04700461 A EP04700461 A EP 04700461A EP 04700461 A EP04700461 A EP 04700461A EP 1581696 B1 EP1581696 B1 EP 1581696B1
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EP
European Patent Office
Prior art keywords
fibers
cellulose
dispersion
white water
cationic
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 - Lifetime
Application number
EP04700461A
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German (de)
English (en)
French (fr)
Other versions
EP1581696A1 (fr
Inventor
Michel Droux
Carl Desaint Jean
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.)
Saint Gobain Adfors SAS
Original Assignee
Saint Gobain Vetrotex France SA
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Publication of EP1581696A1 publication Critical patent/EP1581696A1/fr
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Anticipated expiration legal-status Critical
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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
    • D21H13/36—Inorganic fibres or flakes
    • D21H13/38—Inorganic fibres or flakes siliceous
    • D21H13/40—Inorganic fibres or flakes siliceous vitreous, e.g. mineral wool, glass 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
    • D04H1/4209—Inorganic fibres
    • D04H1/4218—Glass 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
    • 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

Definitions

  • the invention relates to a method of manufacturing in a cationic medium a web comprising glass fibers and cellulose fibers.
  • Sails comprising cellulosic fibers and glass fibers have both high tensile strength and high tear strength. This combination of properties makes this type of material an excellent candidate for shingle strengthening, often referred to as "Canadian shingles". These shingles are generally obtained by impregnating a fibrous structure like a veil by a tar or asphalt.
  • the term "veil” means a nonwoven consisting of fully dispersed filaments.
  • the webs of the present invention generally have a basis weight of from 20 to 150 g / m 2 and more particularly from 30 to 130 g / m 2 , for example about 100 g / m 2 .
  • WO 9913154 teaches a process for wet preparation of a glass / cellulose web comprising 5 to 15% binder. According to this document, the dispersion of the fibers is ensured in the presence of an anionic viscosity modifier (Nalco 2388) and a dispersant whose nature is not specified.
  • an anionic viscosity modifier NaC 2388
  • a dispersant whose nature is not specified.
  • WO 0111138 teaches a two-step preparation process comprising a first step of preparing a suspension comprising cellulose fibers and a cationic polymer, a second step of preparing a suspension comprising glass fibers, a dispersant and a Viscosity modifier, these two suspensions then being combined before passing on a training fabric.
  • This document does not teach anything about the ionic or non-ionic nature of the process water at the time of its passage on the training web.
  • the aqueous solution in which the fibers are dispersed is called process water.
  • process water The aqueous solution in which the fibers are dispersed.
  • the method according to the invention is particularly simple because it allows suspending in a single step and directly in the process water both glass fibers and cellulose fibers.
  • the manufacture of a continuous web involves the passage of a bed of dispersed fibers by a set of several successive devices in front of each apply to said fibers a particular treatment.
  • the fiber bed after its formation in a "training device”, then crosses if necessary a "binder removal device” and then a “steaming device”.
  • the transport of the bed through these devices is achieved through moving mats, the bed can usually be moved from one carpet to another.
  • the process water is cationic at least as soon as one begins to add fibers to it.
  • the process water as well as the dispersion containing it remains cationic at least until it passes over the forming web.
  • it is usually permanently cationic.
  • the process can be continuous, the process water being recycled and having a cationic character throughout its circulation loop.
  • the cationic character of the process water is at the origin of a favorable dispersion of the glass and cellulose fibers as soon as they are introduced into said water, until they pass on the forming fabric.
  • the maintenance of a cationic character of the process water does not exclude the presence in said water if necessary of anionic, nonionic or amphoteric (ie both cationic and anionic) ingredients. ) since overall, thanks to the presence of at least one other cationic ingredient, the overall cationic character of the process water is ensured.
  • the process water contains at least one cationic dispersant in an amount sufficient for the process water to be cationic.
  • the ionic character of the process water can be determined by potentiometric assay.
  • a particle charge detector such as that of the trademark Mütek PCD 03 and a titrator Mütek Titrator PCD-Two.
  • the principle of the method consists in neutralizing a determined volume (for example 10 ml) of the process water whose cationic character is to be determined by a measured volume of an anionic aqueous titrating solution.
  • titrant solution it is possible for example to use a solution of sodium polyethylene sulfonate ("Pes-Na"), for example at 10 -3 N.
  • Pes-Na sodium polyethylene sulfonate
  • the cationic nature of the process water can be expressed by the number of milliliters of Na-Na solution needed to neutralize 10 milliliters of process water.
  • the process water is cationic so that 10 ml of process water can be neutralized with 1 to 10 ml of anionic titrating solution at 10 -3 N and more preferably at 1.5 to 4 ml of said anionic titrant solution.
  • the process water is cationic from 1.10 -4 N to 1.10 -3 N and more preferably from 1.5 ⁇ 10 -4 N to 4.10 -4 N.
  • the fibers To be dispersed in water, the fibers must be able to remain in the individual state and not mix together in the process water. If we disperse in the water cut son, set of fibers, these son must be able to disintegrate in dispersion in the water.
  • the term "wire" means a set of contiguous filaments and more particularly comprising from 10 to 2000 fibers.
  • the fibers can be introduced into the process water in the form of yarns comprising more particularly 10 to 2000 fibers.
  • the glass fibers may have been sized during their manufacture, to be gathered, where appropriate, in the form of threads, in particular by sizing liquids comprising an organosilane and / or a tackifier ("film former"). It is preferable in this case not to dry the fibers before dispersing them in water, so as to prevent them from sticking together, which would hinder their dispersion in the form of individual filaments.
  • Cellulose fibers are usually obtained from wood pulp. This wood pulp is usually obtained from commercial cardboard sheets which are softened with water. This water used to soften the cardboard is then used to transport the pulp towards the installation for producing the dispersion. This water / pulp mixture generally contains just sufficient water to be able to convey the pulp by flow. This pulp / water mixture before reaching the dispersion medium generally contains 70 to 99% by weight of water and 1 to 30% by weight of cellulose.
  • the dispersion in the process water of the two types of fibers can be carried out, for example in a pulper.
  • This dispersion can be carried out initially in a pulper, for example with a proportion of fibers such that the sum of the fiberglass + cellulose fiber mass ranges from 0.01% to 0.5% by weight of the fiber. sum of the weight of the fibers and the process water.
  • the fiber / process water dispersion at the time of passing into the bed forming step on the forming wire is such that the sum of the mass of the fibers is 0.01 to 0.5% by weight of said dispersion and preferably 0.02 to 0.05% by weight of said dispersion.
  • the dispersion may experience a decrease in fiber concentration from the pulper to the bed-forming device.
  • the ratio of the mass of the glass fibers to that of the mass of the cellulose fibers is the same as that desired in the final veil.
  • the process water may include a thickener to increase the viscosity of the process water.
  • This thickener may be present in an amount of 0 to 0.5% by weight in the process water.
  • This thickener may for example be a hydroxyethylcellulose (for example Natrosol 250HHR from Hercules). Hydroxyethylcellulose is an anionic compound.
  • the process water generally comprises a cationic dispersant.
  • This cationic dispersant can generally be present in an amount of from 0 to 0.1% by weight in the process water.
  • This cationic dispersant can be, for example, guanidine or a fatty chain amine.
  • guanidine or a fatty chain amine.
  • the thickener is preferably introduced so that the process water has a viscosity at 20 ° C. of between 1 and 20 mPa.s and preferably of between 3 and 16 mPa.s.
  • the process water / fiber dispersion is agitated and then passed onto a permeable forming web, allowing process water to flow therethrough and retaining the fibers on its surface.
  • the process water can be aspirated to improve its evacuation.
  • the process water can be recycled to be mixed again with fibers.
  • the fibers thus form a bed on the surface of the forming fabric.
  • the dispersion does not comprise the binder or the precursor of the final binder, and this binder where this binder precursor is generally applied to the web in a device for applying the binder or its precursor placed between the binder stage and the binder. bed formation and the heat treatment stage.
  • the binder may be of the type commonly used in this type of embodiment.
  • it may be plasticized polyvinyl acetate (PVAc) or acrylic styrene or self-crosslinking acrylic or urea formalin or melamine formaldehyde. The excess binder can be sucked out through the forming fabric.
  • the heat treatment step is intended to evaporate water and perform any chemical reactions between the various constituents and / or to transform the binder precursor by binding and / or to give the binder its final structure.
  • the heat treatment can be performed by heating between 140 and 250 ° C and more generally between 180 and 230 ° C.
  • the duration of the heat treatment is generally from 2 seconds to 3 minutes and more generally from 20 seconds to 1 minute (for example 30 seconds at 200 ° C.).
  • the veil can be dried and heat-treated in a circulating hot air oven through the carpet.
  • FIG. 1 shows schematically an industrial process for the continuous preparation of a web according to the invention.
  • Glass fibers are introduced in (g) into a pulper and the cellulose fibers are introduced in (c) in the same pulper in the presence of process water and stirring to form a dispersion.
  • the mixture is then possibly discharged into a storage tank 2 through the pipe 3, the function of the storage tank being to increase the mixing time between the filaments and the process water.
  • This storage bin is optional.
  • the mixture is then passed through line 4 to line 5, which brings the flow of mixture from line 4 to a stream of recycled process water from headbox 6 ("head box"). ) at line 7. At this level, the fiber content in the fiber / process water mixture is greatly lowered.
  • Process water is drained at 14 and possibly aspirated at 15 through the forming fabric 8 and is recycled via line 17. This recycled water is then shared at 16, for example at about 10% for return to the pulper through the pipe 10 and for about 90% to return to the headbox 6 through the pipes 9, 7 and 5.
  • the circulation in the pipes is provided by the pumps 11, 12 and 13.
  • the pump It is called the main pump ("fan pump" in English).
  • the forming veil 18 then makes a "carpet jump" to the parboiling device 19 carrying out the heat treatment, and the final veil is wound in 20.
  • the invention allows the production of sails whose tear resistance may even be greater than 430 or even greater than 450 gf as measured by the ISO 1974 standard, and this while showing a high tensile strength, generally greater than 22 kgf as measured according to ISO 3342 adapted in that the width of the cutting template of the specimen is 50 mm and that the movement speed of the clamps is 50 mm / min ⁇ 5 mm / min.
  • the weight ratio glass / cellulose ranges from 2.4 / 97.5 to 14.6 / 85.3.
  • the viscosity of the process water is 15 mPa.s at 20 ° C before introduction of the cellulose and glass fibers.
  • this pre-dispersion is placed in a rectangular laboratory mold (30 cm ⁇ 30 cm) containing 25 liters of the process water. The water is then drained and the fiber mixture is recovered on a training fabric.
  • the web formed on the fabric passes over a suction slit where the excess process water is sucked.
  • the form is then impregnated with a binder (of urea-formaldehyde self-crosslinkable type) in aqueous dispersion by dipping between two forming webs.
  • the excess binder is removed by passing over a suction slot.
  • the resulting sheet is then dried and heat treated in a hot air oven 90 seconds at 200 ° C).
  • the invention leads to a web whose weight is 100 g / m 2 .
  • This veil has a high level of tear resistance.
  • the table below gives values of tensile strength and tear resistance as a function of the glass / cellulose mass ratio: Glass / cellulose 100/0 99/1 95/5 90/10 85/15 80/20 Tear (gf) 395 410 468 469 396 420 Traction (kgf) 24 24 24 23 22 20
  • Poly-DADMAC Poly diallyl dimethyl ammonium chloride
  • the viscosity of the process water is 2.6 mPa.s at 20 ° C before introduction of the cellulose and glass fibers.
  • this pre-dispersion is placed in a rectangular laboratory form (30 cm ⁇ 30 cm) containing 25 liters of the process water. The water is then drained and the fiber mixture is recovered on a training fabric.
  • the distribution of the fibers on the canvas is very bad. There is flocculation of all the fibers (glass and cellulose) due to the anionic character of the water of process.
  • the fibrous network comprises only reagglomerate fibers. It is possible to pass on a suction slot where the excess process water is sucked, to impregnate the fibers with a binder (of urea-formaldehyde self-crosslinkable type) in aqueous dispersion by dipping between two forming webs , evacuate the excess binder by passing it over a suction slit and dry and heat-treat the fibrous structure in a hot-air oven for 90 seconds at 200 ° C.
  • a binder of urea-formaldehyde self-crosslinkable type

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Paper (AREA)
  • Nonwoven Fabrics (AREA)
  • Glass Compositions (AREA)
  • Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
  • Laminated Bodies (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
  • Surface Treatment Of Glass Fibres Or Filaments (AREA)
EP04700461A 2003-01-08 2004-01-07 Fabrication d un voile en fibres de verre et de cellulose en milieu cationique Expired - Lifetime EP1581696B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0300125 2003-01-08
FR0300125A FR2849655B1 (fr) 2003-01-08 2003-01-08 Fabrication d'un voile en fibres de verre et de cellulose en milieu cationique
PCT/FR2004/000014 WO2004070112A1 (fr) 2003-01-08 2004-01-07 Fabrication d'un voile en fibres de verre et de cellulose en milieu cationique

Publications (2)

Publication Number Publication Date
EP1581696A1 EP1581696A1 (fr) 2005-10-05
EP1581696B1 true EP1581696B1 (fr) 2007-01-17

Family

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EP04700461A Expired - Lifetime EP1581696B1 (fr) 2003-01-08 2004-01-07 Fabrication d un voile en fibres de verre et de cellulose en milieu cationique

Country Status (17)

Country Link
US (2) US8157957B2 (ru)
EP (1) EP1581696B1 (ru)
JP (1) JP2006517621A (ru)
KR (2) KR101127969B1 (ru)
CN (1) CN100414040C (ru)
AT (1) ATE351943T1 (ru)
AU (1) AU2004209310A1 (ru)
BR (1) BRPI0406508A (ru)
CA (1) CA2512753C (ru)
DE (1) DE602004004362T2 (ru)
EA (1) EA007362B1 (ru)
FR (1) FR2849655B1 (ru)
MX (1) MXPA05006960A (ru)
NO (1) NO20053750L (ru)
NZ (1) NZ540530A (ru)
PL (1) PL214237B1 (ru)
WO (1) WO2004070112A1 (ru)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2837503B1 (fr) * 2002-03-20 2004-06-04 Saint Gobain Vetrotex Voile a liant fibre pvoh
US8080171B2 (en) * 2007-06-01 2011-12-20 Ocv Intellectual Capital, Llc Wet-laid chopped strand fiber mat for roofing mat
US7927459B2 (en) * 2007-09-17 2011-04-19 Ocv Intellectual Capital, Llc Methods for improving the tear strength of mats
US20090162609A1 (en) * 2007-12-21 2009-06-25 Lee Jerry Hc Cationic fiberglass size
DE102008002087A1 (de) * 2008-05-29 2009-12-03 Voith Patent Gmbh Anlage zur Herstellung einer Faserstoffbahn
CN105829606B (zh) 2013-12-19 2020-03-20 3M创新有限公司 使用可再循环的废水来制备适用于污染控制设备或挡火物中的非织造纤维材料
WO2020234736A1 (en) * 2019-05-21 2020-11-26 Minh Tam Do Multiple-layer composite board of discrete materials and plastic

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB753485A (en) * 1952-09-18 1956-07-25 Hawley Products Co Sheet material of fibrous cellulose and glass fibrous rovings
US4112174A (en) * 1976-01-19 1978-09-05 Johns-Manville Corporation Fibrous mat especially suitable for roofing products
US5445878A (en) * 1993-09-20 1995-08-29 Georgia-Pacific Resins, Inc. High tear strength glass mat urea-formalehyde resins for hydroxyethyl cellulose white water
US5837620A (en) * 1996-10-10 1998-11-17 Johns Manville International, Inc. Fiber glass mats and method of making
US5965638A (en) * 1997-09-08 1999-10-12 Elk Corporation Of Dallas Structural mat matrix
US6251224B1 (en) * 1999-08-05 2001-06-26 Owens Corning Fiberglass Technology, Inc. Bicomponent mats of glass fibers and pulp fibers and their method of manufacture
US6418811B1 (en) 2000-05-26 2002-07-16 Ross-Hime Designs, Inc. Robotic manipulator
US6488811B1 (en) * 2001-04-30 2002-12-03 Owens Corning Fiberglas Technology, Inc. Multicomponent mats of glass fibers and natural fibers and their method of manufacture
FR2836934B1 (fr) 2002-03-06 2004-05-07 Saint Gobain Vetrotex Mat de fils coupes par voie humide
FR2837503B1 (fr) 2002-03-20 2004-06-04 Saint Gobain Vetrotex Voile a liant fibre pvoh

Also Published As

Publication number Publication date
MXPA05006960A (es) 2005-08-16
KR20050096126A (ko) 2005-10-05
US8273214B2 (en) 2012-09-25
US20060113050A1 (en) 2006-06-01
US20120118521A1 (en) 2012-05-17
BRPI0406508A (pt) 2005-12-06
KR101127969B1 (ko) 2012-03-30
NZ540530A (en) 2008-10-31
DE602004004362D1 (de) 2007-03-08
EP1581696A1 (fr) 2005-10-05
FR2849655A1 (fr) 2004-07-09
AU2004209310A1 (en) 2004-08-19
DE602004004362T2 (de) 2007-08-23
NO20053750L (no) 2005-09-20
KR101236413B1 (ko) 2013-02-22
FR2849655B1 (fr) 2005-02-11
KR20120013995A (ko) 2012-02-15
ATE351943T1 (de) 2007-02-15
CN1723313A (zh) 2006-01-18
CA2512753A1 (fr) 2004-08-19
CN100414040C (zh) 2008-08-27
CA2512753C (fr) 2011-09-13
US8157957B2 (en) 2012-04-17
PL378340A1 (pl) 2006-03-20
EA007362B1 (ru) 2006-10-27
EA200501100A1 (ru) 2005-12-29
PL214237B1 (pl) 2013-07-31
JP2006517621A (ja) 2006-07-27
WO2004070112A1 (fr) 2004-08-19
NO20053750D0 (no) 2005-08-04

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