EP1448816A1 - Fibres thermoplastiques thermosoudables a base de polypropylene, procede de fabrication de telles fibres et non-tisse obtenu par thermoliage de telles fibres - Google Patents
Fibres thermoplastiques thermosoudables a base de polypropylene, procede de fabrication de telles fibres et non-tisse obtenu par thermoliage de telles fibresInfo
- Publication number
- EP1448816A1 EP1448816A1 EP02787568A EP02787568A EP1448816A1 EP 1448816 A1 EP1448816 A1 EP 1448816A1 EP 02787568 A EP02787568 A EP 02787568A EP 02787568 A EP02787568 A EP 02787568A EP 1448816 A1 EP1448816 A1 EP 1448816A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fibers
- constituent
- polypropylene
- temperature
- thermobonding
- 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
Links
Classifications
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—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 welding together the fibres, e.g. by partially melting or dissolving
-
- 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
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/44—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds
- D01F6/46—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds of polyolefins
-
- 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
- D04H1/54—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 welding together the fibres, e.g. by partially melting or dissolving
- D04H1/542—Adhesive fibres
- D04H1/544—Olefin series
-
- 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
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2913—Rod, strand, filament or fiber
- Y10T428/2929—Bicomponent, conjugate, composite or collateral fibers or filaments [i.e., coextruded sheath-core or side-by-side type]
- Y10T428/2931—Fibers or filaments nonconcentric [e.g., side-by-side or eccentric, etc.]
-
- 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
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2913—Rod, strand, filament or fiber
- Y10T428/2973—Particular cross section
- Y10T428/2978—Surface characteristic
-
- 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
- Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
- Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
- Y10T442/637—Including strand or fiber material which is a monofilament composed of two or more polymeric materials in physically distinct relationship [e.g., sheath-core, side-by-side, islands-in-sea, fibrils-in-matrix, etc.] or composed of physical blend of chemically different polymeric materials or a physical blend of a polymeric material and a filler material
-
- 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
- Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
- Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
- Y10T442/69—Autogenously bonded nonwoven fabric
Definitions
- the present invention relates to thermosealable thermoplastic fibers 5 based on polypropylene, usable for the manufacture of nonwoven by thermobonding, especially in the sanitary-sanitary sector. It also relates to a process for manufacturing such fibers and to a nonwoven obtained by thermobonding said fibers.
- Polyolefin fibers in particular polypropylene fibers,
- polyolefin fibers are used pure or mixed with other fibers in the manufacture of products from the textile sector proper, such as lingerie, sportswear and carpets or even the industrial sector such as geotextiles or filters or the hygienic-sanitary sector such as
- Polypropylene fibers are generally produced according to the technique of melt spinning, which consists in melting the polymer, with different additives, in an extruder at high temperature and in passing the molten material thus obtained through the holes of a die, a metering pump to maintain a constant pressure during melt spinning
- the hot filaments leaving the die are cooled by an air flow and subjected to various operations, in particular drawing and cut to give fibers with desirable mechanical and cohesive characteristics.
- thermobonding The manufacture of nonwovens from polypropylene fibers is done by various techniques including thermobonding. According to this technique, the polypropylene fibers in the form of a sheet are hot pressed so as to obtain inter-fiber bonds thanks to the localized and surface fusion of the fibers in the welding zones.
- the first type of fiber in particular known from the documents US.4,473,677, US.5,985,193 and WO.99 / 55942, these are two-component fibers. They are obtained by the use of two extruders, each being supplied independently with a specific polymer, the two polymers in question having slightly different melting temperatures. During the thermobonding operation, it is the melting of the component having the lowest temperature which makes it possible to obtain the bond between the fibers.
- the drawback of this first type of fiber comes in particular from the relatively high manufacturing cost due to the special spinning installation o which is made necessary for this co-extrusion.
- the second type of fiber notably known from documents US.5.985.193 and WO.99 / 55942, it is also bi-component or bi-component fibers which consist of a mixture of polymer obtained directly in a single extruder.
- the fiber structure is irregular, one of the components forming islands in the other component, the dimensions of said islands being a function of the miscibility of the two components.
- fibers having 0 superficially degraded skin are commonly referred to as skin fibers. They are obtained under special conditions of the spinning and cooling process which lead to thermooxidative molecular degradation at the periphery of the fibers, the skin being formed by the surface layer of polymer thus degraded.
- the cohesion of the fibers between them is obtained by the melting of the polymer constituting the degraded skin, the latter having a lower melting temperature than that of the non-degraded polymer constituting the core of the fiber. .
- fibers with degraded skin have a certain number of drawbacks. Without this phenomenon being clearly explained, it can be seen that the fibers comprising a degraded skin have a less soft touch, a harder hand. This inconvenience is further increased when it is a question of assessing the softness of the nonwoven obtained with these fibers with degraded skin, because in the welding zones the inter-fiber bonds are themselves rigid, being formed by the degraded polymer.
- thermo-oxidative molecular degradation it is necessary to work with a high extrusion temperature, which results in a higher energy consumption.
- the object of the present invention is to propose new thermosealable thermoplastic fibers based on polypropylene, which can be used for the manufacture of nonwoven by thermobonding, in particular but not exclusively in the hygienic-sanitary field, which overcomes the aforementioned drawbacks of the three types of polypropylene fibers offered so far.
- the fibers of the present invention which, in a characteristic manner, have a homogeneous structure in cross section, having no degraded skin on the surface, which are heat-weldable under a given pressure and at a given temperature which is lower than the melting temperature, thanks to internal heating under the effect of said pressure.
- the cohesion of the fibers between them is not obtained thanks to a portion of polymer which has a lower melting temperature.
- the fibers have a completely homogeneous structure throughout their cross section, comprising neither degraded skin on the surface, nor islands, nor two separate components. Their macromolecular composition is determined so that an internal heating occurs when they are compressed under a given pressure, this internal heating allowing them to be heat sealable under said pressure and at a given pressure which is lower than their melting temperature.
- the fibers of the invention are composed of a first constituent with high criticality and at least a second constituent, compatible with the first, and whose crystallinity is less than that of the first constituent.
- the presence of the second constituent, with lower crystallinity, constitutes a certain molecular disorder in the crystalline phase, which facilitates the initiation of a molecular slip during the compression of the fibers during the phase known as plastic phase.
- the plastic behavior of polypropylene allows it to resist high deformations, which can go up to 6OO to 7OO%, and to keep its shape after deformation in a relatively stable manner. During the compression process, polypropylene goes through two phases, an elastic phase and a plastic phase.
- the polypropylene cools slightly.
- molecular sliding occurs which propagates through the mass of the polypropylene.
- the molecular friction thus created generates heat which raises the temperature of the fiber.
- this increase in temperature can cause the polypropylene to melt.
- the first constituent is a crystalline polypropylene homopolymer and the second constituent is a copolymer of propylene and at least one other monomer chosen from ethylene, butene and ⁇ -olefins whose carbon chain comprises at least five carbon atoms.
- the relative proportions, by weight, of the first and second constituents are from 20 to 99% for the first constituent and from 80 to
- this process implements spinning conditions which avoid ther ⁇ io-oxidative molecular degradation at the periphery of the fibers during spinning.
- these particular conditions first of all, the presence of a large amount of antioxidant additive and especially a quantity of primary antioxidant of between 350 and 100 ppm is retained. 5
- the amount of primary antioxidant is generally less than 350 ppm.
- a primary antioxidant is an additive that protects the polymer against the action of oxygen at high temperatures. It is preferably chosen from stereo-hindered phenols and from ⁇ o lactones. Other additives are also used such as primary antioxidants which are additives intended to protect the polymer at high manufacturing temperatures, in the absence of oxygen. These include organic phosphite.
- both secondary antioxidants and primary antioxidants are used.
- additives can also be used, such as antacid agents chosen, for example, from stearates, especially calcium or zinc, which are used to avoid corrosion phenomena.
- Additives can also be used to protect the polymer at storage temperatures for extended periods of time (shelf life). These additives are generally chosen from phenols and from stereo-hindered amines.
- the applicant has found that it is essential to optimize the stability of the polymer to oxygen, at high temperatures, by using a sufficient quantity of primary antioxidant, in order to remain below the threshold d 'initiation of thermo-oxidative degradation during spinning and thus avoiding the formation of degraded skin on the surface of the fiber.
- rapid cooling is carried out, immediately at the outlet of the die, for example by blowing an air flow at a temperature between 16 and 26 ° C., this blowing being directed directly onto the spindle or onion of polymer forming at the outlet of the hole in the die.
- this air flow has a humidity rate which is between 30 and 80%.
- This process consists in thermoliering said sheet according to welding zones by compressing the fibers in these welding zones at a temperature below their melting temperature and at a pressure which is determined so as to obtain, during their plastic deformation, a internal heating causing the fibers to merge in the weld zones.
- the nonwoven which is obtained by thermobonding the fibers according to the invention is characterized in that, in the weld zones, the weld points are presented as a multi-layered or laminated polymer (polymer laminate).
- the welding points comprise inter-fiber links in the form of filaments or membranes and have a white appearance. It should be noted that the optical transparency of the solder points can only be observed for a homogeneous polymer of very small thickness, less than a micrometer, without elements of the filament or membrane type and without microbubbles of air. This configuration of the multi-layer polymer type soldering points makes it possible to obtain a nonwoven having good resistance. mechanical.
- the feel of the nonwoven obtained is particularly soft. i o This is explained by the perfectly smooth surface condition both of the fibers themselves and also of the inter-fiber bonds. It should be noted that the temperature and compression conditions during thermobonding are such that they do not cause any thermo-oxidative degradation at the surface of the inter-fiber bonds.
- the nonwoven obtained according to the invention has
- FIG. 1 represents a view of the external surface of a fiber of the invention
- Figure 2 shows a cross-sectional view of the fiber in Figure
- FIG. 3 represents a view of the external surface of a fiber having a heart-skin structure
- FIG. 4 shows a cross-sectional view of the fiber of Figure 3
- FIG. 5 represents a diagram of a device allowing the implementation of the method of the invention
- 6 shows an enlargement in front view of the cooling zone of the device of Figure 5
- Figure 7 shows a sectional view of Figure 6
- Figures 8 and 9 show in more detail the adjustable fins of the cooling system.
- Table 1 shows the variation in the melting temperature of a mixture of a polypropylene homopolymer (HP554N produced by the company Basell) and a copolymer of polypropylene and polyethylene (RCXP 2130 produced by the company Basell).
- the melting temperature was determined to be the temperature corresponding to the peak of enthalpy of fusion measured by differential thermal analysis.
- the device used is the "DSC 700" manufactured by the company Polymer Lab. The heating rate is 3 ° C / min.
- the melting temperature of the mixture is lower than that of the polymer, which is an indication of the formation of a disorder on the molecular scale.
- This disorder can be observed on X-rays. It can result either from the limited displacement of certain atoms with respect to the crystallographic planes, or from a dilation or compression of the inter-planar distances, or from a decrease or an increase in the concentration electronic on certain crystallographic planes. Without the Applicant being bound by this explanation, it seems that the plastic weldability properties of the fibers are favored by this last factor which comes in the above example from the presence of methyl groups polypropylene which modify the stereographic position inside the crystal structure.
- the antioxidant composition added to the polymer blend is very important in order to avoid the formation of degraded skin which is harmful to the tactile and mechanical properties of the nonwoven obtained from the fibers.
- the concentration of antioxidant composition is of the order of 500 ppm-2000 ppm.
- Table 2 below gives three examples of compositions which are preferably incorporated into the polymer mixture cited as an example.
- the stability to oxygen and to high temperatures of the mixture obtained is measured by the TOSI method (Thermal Oxidation Stability Index) F. Polato: Consicacade privata, Nov. 30.1998.
- This method assumes that the MFR is an indicator as a first approximation of the average molecular weight by mass Mw of the polymer. It consists in evaluating the molecular degradation of the polymer maintained at constant temperature in a closed cell for a defined time, in the absence of oxygen, and in extruding it several times at high temperature in the presence of oxygen from the air. Table 2
- MFR melting flow rate (abbreviated as MFR) originating from the polymer determined according to standard ASTM D-1238 (Condition L; 230/2016);
- condition L (condition L; 230 / 2.16) after two heatings at 290 ° C for 6 min in the presence of oxygen.
- Composition 1 is a composition of Composition 1:
- Prevented stereo phenol chosen from C.A.S. Nos. 6683-19-8, 27676-62-6 and
- Composition 2 is a composition of Composition 2:
- Lactone C.A.S. N ° s 18131-48-7 / photo stabilizer congested stereo amine / organic phosphites chosen from CAS N ° 31570-04-4, 119345-01-6
- Composition 3 is a composition of Composition 3:
- Prevented stereo phenol chosen from C.A.S. Nos. 6683-19-8, 27676-62-6 and
- a cooling device comprising air flows which are turned towards the beams or segments leaving the die, which has the effect of reducing the hot contact time of fiber with oxygen from the ambient atmosphere and increase the stability of the molten polymer column.
- Figure 1 shows that the surface of the fiber obtained by the method of the invention is perfectly smooth and Figure 2 shows that in cross section, this fiber is perfectly homogeneous. Its cross section does not in fact report any ring structure.
- FIG. 3 shows that the external surface of a fiber with a heart-skin structure is irregular.
- Figure 4 there is an external skin referenced P and a heart referenced C surrounded by this skin.
- Figures 5 to 9 show an embodiment of a device for implementing the process for manufacturing a fiber according to the invention.
- FIG. 5 represents a die 1 equipped with an air cooling system 2.
- the air intake is effected by the tube 2a placed below the spinning head.
- the fibers F which are extruded pass in front of fins 3 which will be more fully described with reference to FIGS. 8 and 9.
- the cooling air is conveyed through filters 6 at the level of the extrusion head 4.
- the air flow is directed via the fins 3.
- the heated air is evacuated.
- the air represented by the arrows passes between the fins 3 which are pivotally mounted on a frame 5.
- Each fin 3 is pivotally mounted by means of a pivot 3a on the frame 5.
- the cooling air represented by the arrows is directed by the fins 3 and comes to cool the onion of polymer O which forms at the level of the extrusion head 4.
- the heated air is then evacuated.
- the cooling air is at a temperature between 16 ° C and 26 ° C and has a humidity level between 30% and 80%.
- the sheet of fibers is brought to a temperature below the softening temperature of the polymeric material which constitutes said fibers and compressed strongly in certain areas so as to cause in the fibers located in said areas the phenomenon of creep (initiation and propagation of a molecular slip) previously exposed.
- the plastic phase of the deformation of the fibers under the effect of compression, there is an internal heating in the fibers, which raises the temperature thereof to the melting temperature.
- This fusion combined with compression causes the creation of weld points of a multilayer or laminated, homogeneous and transparent polymer structure.
- the heating temperature of the fibers is around 140 ° C - 145 ° C for 10 x 10 "3 seconds, which corresponds to the contact time of the fibers with the compression rollers of the thermobonding installation. in use is calculated so as to obtain maximum cohesion of the nonwoven obtained.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Nonwoven Fabrics (AREA)
- Artificial Filaments (AREA)
- Multicomponent Fibers (AREA)
- Laminated Bodies (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0114275 | 2001-11-05 | ||
FR0114275A FR2831895B1 (fr) | 2001-11-05 | 2001-11-05 | Fibre notamment utilisee pour la fabrication de non tisses et procede pour l'obtention d'une telle fibre |
PCT/EP2002/012331 WO2003040443A1 (fr) | 2001-11-05 | 2002-11-05 | Fibres thermoplastiques thermosoudables a base de polypropylene, procede de fabrication de telles fibres et non-tisse obtenu par thermoliage de telles fibres |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1448816A1 true EP1448816A1 (fr) | 2004-08-25 |
EP1448816B1 EP1448816B1 (fr) | 2008-07-16 |
Family
ID=8869066
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02787568A Expired - Lifetime EP1448816B1 (fr) | 2001-11-05 | 2002-11-05 | Fibres thermoplastiques thermosoudables a base de polypropylene, procede de fabrication de telles fibres et non-tisse obtenu par thermoliage de telles fibres |
Country Status (7)
Country | Link |
---|---|
US (1) | US7494947B2 (fr) |
EP (1) | EP1448816B1 (fr) |
AT (1) | ATE401437T1 (fr) |
DE (1) | DE60227692D1 (fr) |
DK (1) | DK1448816T3 (fr) |
FR (1) | FR2831895B1 (fr) |
WO (1) | WO2003040443A1 (fr) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10161063B2 (en) * | 2008-09-30 | 2018-12-25 | Exxonmobil Chemical Patents Inc. | Polyolefin-based elastic meltblown fabrics |
US8664129B2 (en) * | 2008-11-14 | 2014-03-04 | Exxonmobil Chemical Patents Inc. | Extensible nonwoven facing layer for elastic multilayer fabrics |
US20100266824A1 (en) * | 2009-04-21 | 2010-10-21 | Alistair Duncan Westwood | Elastic Meltblown Laminate Constructions and Methods for Making Same |
US20100266818A1 (en) * | 2009-04-21 | 2010-10-21 | Alistair Duncan Westwood | Multilayer Composites And Apparatuses And Methods For Their Making |
US9168718B2 (en) | 2009-04-21 | 2015-10-27 | Exxonmobil Chemical Patents Inc. | Method for producing temperature resistant nonwovens |
US9498932B2 (en) * | 2008-09-30 | 2016-11-22 | Exxonmobil Chemical Patents Inc. | Multi-layered meltblown composite and methods for making same |
KR101348060B1 (ko) | 2009-02-27 | 2014-01-03 | 엑손모빌 케미칼 패턴츠 인코포레이티드 | 다층 부직 동일-공정계 라미네이트 및 이의 제조 방법 |
US8668975B2 (en) * | 2009-11-24 | 2014-03-11 | Exxonmobil Chemical Patents Inc. | Fabric with discrete elastic and plastic regions and method for making same |
US9314993B2 (en) * | 2013-03-15 | 2016-04-19 | National Nonwovens Inc. | Composites and articles made from nonwoven structures |
US9314995B2 (en) | 2013-03-15 | 2016-04-19 | National Nonwovens Inc. | Composites comprising nonwoven structures and foam |
EP3600876A4 (fr) | 2017-03-27 | 2021-04-21 | Sellars Absorbent Materials, Inc. | Matériau stratifié absorbant |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4115620A (en) * | 1977-01-19 | 1978-09-19 | Hercules Incorporated | Conjugate filaments |
US4296022A (en) * | 1980-06-04 | 1981-10-20 | Chevron Research | Polypropylene blend compositions |
JPS62156310A (ja) * | 1985-12-28 | 1987-07-11 | Ube Nitto Kasei Kk | ポリプロピレン系接着性繊維 |
EP0552013B1 (fr) * | 1992-01-13 | 1999-04-07 | Hercules Incorporated | Fibre thermoliable pour tissus non-tissés à ténacité élevée |
IT1264841B1 (it) * | 1993-06-17 | 1996-10-17 | Himont Inc | Fibre adatte per la produzione di tessuti non tessuti con migliorate caratteristiche di tenacita' e sofficita' |
SG50447A1 (en) * | 1993-06-24 | 1998-07-20 | Hercules Inc | Skin-core high thermal bond strength fiber on melt spin system |
US5460884A (en) * | 1994-08-25 | 1995-10-24 | Kimberly-Clark Corporation | Soft and strong thermoplastic polymer fibers and nonwoven fabric made therefrom |
US5714256A (en) * | 1995-01-27 | 1998-02-03 | Kimberly-Clark Worldwide, Inc. | Method of providing a nonwoven fabric with a wide bonding window |
US6116683A (en) * | 1997-05-19 | 2000-09-12 | Maier; Dillon | Bicycle touring seat |
US6444774B1 (en) * | 1997-10-10 | 2002-09-03 | Exxonmobil Chemical Patents, Inc. | Propylene polymers for fibers and fabrics |
JP2002542403A (ja) * | 1999-04-15 | 2002-12-10 | バセル テクノロジー カンパニー ビー.ブイ. | プロピレンのランダムコポリマーからなる熱接着可能ポリオレフィン繊維 |
-
2001
- 2001-11-05 FR FR0114275A patent/FR2831895B1/fr not_active Expired - Lifetime
-
2002
- 2002-11-05 WO PCT/EP2002/012331 patent/WO2003040443A1/fr active IP Right Grant
- 2002-11-05 US US10/494,238 patent/US7494947B2/en not_active Expired - Fee Related
- 2002-11-05 DE DE60227692T patent/DE60227692D1/de not_active Expired - Lifetime
- 2002-11-05 DK DK02787568T patent/DK1448816T3/da active
- 2002-11-05 EP EP02787568A patent/EP1448816B1/fr not_active Expired - Lifetime
- 2002-11-05 AT AT02787568T patent/ATE401437T1/de not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO03040443A1 * |
Also Published As
Publication number | Publication date |
---|---|
FR2831895A1 (fr) | 2003-05-09 |
WO2003040443A1 (fr) | 2003-05-15 |
EP1448816B1 (fr) | 2008-07-16 |
DK1448816T3 (da) | 2008-11-17 |
FR2831895B1 (fr) | 2007-10-26 |
US20040248491A1 (en) | 2004-12-09 |
DE60227692D1 (de) | 2008-08-28 |
ATE401437T1 (de) | 2008-08-15 |
US7494947B2 (en) | 2009-02-24 |
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