EP3246447B1 - Non-tissé constitué de filaments continus - Google Patents

Non-tissé constitué de filaments continus Download PDF

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Publication number
EP3246447B1
EP3246447B1 EP17171592.3A EP17171592A EP3246447B1 EP 3246447 B1 EP3246447 B1 EP 3246447B1 EP 17171592 A EP17171592 A EP 17171592A EP 3246447 B1 EP3246447 B1 EP 3246447B1
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EP
European Patent Office
Prior art keywords
polypropylene
spunbonded
filaments
polyolefin
component
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.)
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Application number
EP17171592.3A
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German (de)
English (en)
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EP3246447A1 (fr
Inventor
Sebastian Sommer
Rise Hansen MORTEN
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.)
Reifenhaeuser GmbH and Co KG Maschinenenfabrik
Fibertex Personal Care AS
Original Assignee
Reifenhaeuser GmbH and Co KG Maschinenenfabrik
Fibertex Personal Care AS
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
Priority to PL19177272T priority Critical patent/PL3569753T3/pl
Priority to PL17171592T priority patent/PL3246447T3/pl
Priority to DK19177272.2T priority patent/DK3569753T3/da
Priority to EP19177272.2A priority patent/EP3569753B1/fr
Priority to PL17193288T priority patent/PL3296438T3/pl
Application filed by Reifenhaeuser GmbH and Co KG Maschinenenfabrik, Fibertex Personal Care AS filed Critical Reifenhaeuser GmbH and Co KG Maschinenenfabrik
Priority to EP17193288.2A priority patent/EP3296438B1/fr
Priority to DK17193288.2T priority patent/DK3296438T3/da
Publication of EP3246447A1 publication Critical patent/EP3246447A1/fr
Application granted granted Critical
Publication of EP3246447B1 publication Critical patent/EP3246447B1/fr
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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
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/005—Synthetic yarns or filaments
    • D04H3/007—Addition polymers
    • 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
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/14—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic yarns or filaments produced by welding
    • D04H3/147—Composite yarns or filaments
    • 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
    • D01D5/08—Melt spinning methods
    • D01D5/098—Melt spinning methods with simultaneous stretching
    • D01D5/0985—Melt spinning methods with simultaneous stretching by means of a flowing gas (e.g. melt-blowing)
    • 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
    • D01F1/00—General methods for the manufacture of artificial filaments or the like
    • D01F1/02—Addition of substances to the spinning solution or to the melt
    • D01F1/10—Other agents for modifying properties
    • 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
    • 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
    • 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
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/16—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic filaments produced in association with filament formation, e.g. immediately following extrusion
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2321/00—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D10B2321/02—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins
    • D10B2321/022—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins polypropylene

Definitions

  • the invention relates to a spunbonded nonwoven of continuous filaments of thermoplastic material, wherein the filaments are formed as a multi-component filaments with core-shell configuration, in particular as bicomponent filaments with core-shell configuration.
  • the spunbonded nonwovens have endless filaments.
  • Such continuous filaments differ because of their quasi-endless length of staple fibers having much smaller lengths of, for example, 10 to 60 mm.
  • Spunbonded fabrics of the type mentioned are known from practice in different embodiments. In such spunbonded fabrics, a high strength or high tensile strength is generally desirable. For many applications, the spunbonded nonwovens should also have a smooth, soft feel. A soft grip of the spunbonded fabric on the one hand and a high strength or tensile strength of the spunbonded fabric on the other hand is often not satisfactorily achievable in the combination. Above all, a soft grip can not be realized simultaneously with a high productivity or plant productivity.
  • Polypropylene spunbonded nonwovens have long been known and are characterized by a good running behavior on the associated system. In particular, relatively few soiling occur.
  • these spunbonded fabrics are not particularly soft and the possibilities for improving the softness - for example, through finer fibers - are limited and often not economical.
  • the use of a lubricant to increase the softness of the spunbond web is possible but does not alter the relatively high flexural stiffness of the filaments and thus can not provide a satisfactory soft spunbonded web.
  • the use of such a lubricant has the disadvantage that the lubricant during the spinning process from the Filament melt or diffused out of the initially hot filaments and polluted the system, so that the productivity is ultimately lowered.
  • polypropylene blends have been introduced, for example blends of homo-polypropylene and polypropylene-based copolymers such as Random CoPP. These blends give soft filaments, which are usually characterized by a rather blunt grip, which in turn requires the use of additional lubricants. These soft polypropylene blends have a disadvantageously reduced strength. In addition, the pollution problems described above are also present here.
  • a homo-polypropylene core improves the strength and soft polypropylene blends or the use of polypropylene copolymer in the shell increase the softness of the filaments or the spunbonded nonwoven.
  • the respective filament surfaces are also relatively blunt. This requires the use of a lubricant, which in turn brings the above-mentioned problems associated with contamination with it.
  • a combination of a so-called jumbo roll winder and a roll-over cutting machine is used since it is no longer possible to wind up directly at these high production speeds.
  • the jumbo rolls are stored temporarily, with this period take quite several hours can.
  • an incorporated lubricant can migrate to the surface of the filaments, so that the filaments or the spunbonded web become smoother and thus the rolling behavior deteriorates.
  • the invention is the technical problem of specifying a spunbonded fabric of the type mentioned above, that is characterized both by a smooth soft grip and by a sufficient strength that is simple and efficient to produce and in particular a evaporation of plasticizing additives or evaporation of lubricants can be largely avoided.
  • the invention teaches a spunbonded nonwoven fabric made of thermoplastic material, wherein the filaments are formed as multi-component filaments with core-sheath configuration, in particular as bicomponent filaments with core-sheath configuration, wherein the filaments contain at least one lubricant, wherein the lubricant is present exclusively or at least 90 wt .-%, preferably at least 95 wt .-% in the core component, wherein the mass ratio between the core component and the shell component 50:50 to 90: 10, preferably 60:40 to 85:15, preferably 65:35 to 80:20 and more preferably 65:35 to 75:25, and wherein the proportion of the lubricant - based on the total filament - 250 to 5500 ppm, preferably 500 to 5000 ppm, preferably 700 to 3000 ppm and particularly preferably 700 to 2500 ppm.
  • the surface of the spunbonded fabric is harder in the period up to 150 minutes after spunbonding, in particular by more than 3%, preferably by at least 3.2%, preferably by at least 3.3% and in particular by is at least 3.5% harder than the surface of a comparison spunbond fabric otherwise prepared under the same conditions with a homogeneous distribution of the lubricant with respect to the filament cross section and wherein the surface of the spunbonded web after 96 hours the same degree of hardness or softness or about the same degree of hardness or Softness as the comparative spunbonded, wherein the degrees of hardness then differ preferably by a maximum of 3%, preferably by a maximum of 2.9% and in particular by a maximum of 2.8%.
  • the shell component is free of lubricant or formed substantially free of lubricant.
  • the coat can serve as a migration brake for the existing lubricant in the core.
  • the fact that the surface of the spunbonded fabric is harder than the surface of a comparative spunbonded fabric in the period up to 150 minutes after the production of spunbonded nonwoven fabric means in particular that it is at least one point in time within the first 150 minutes after spunbonding production where this tolerance limit is exceeded.
  • it may take, for example, 120 minutes until the tolerance limit is exceeded.
  • the tolerance limit may already be exceeded or exceeding the tolerance limit is given over the entire period or substantially over the entire period.
  • the migration speeds are relevant depending on the jacket raw material or depending on the shell portion of the filament.
  • the selected period up to 150 min. On the one hand, it is adapted to the measuring device described below and, incidentally, it also takes into account typical times from which the jumbo rolls can be rolled over. A hardness measurement directly in the course of spinning is not possible with the chosen method. It is within the scope of the invention that such a measurement about 15 min. lasts and therefore can not run continuously. However, the mentioned period can not be too long so that it can still serve as a decision-making aid during production. Overall, this period allows the decision regarding the spinning behavior (system cleanliness) and the winding behavior.
  • the degree of hardness of the spunbonded nonwoven surface on the nonwoven surface by means of a TSA measuring device is determined as the volume at the peak maximum of the volume / frequency spectrum at about 6550 Hz.
  • This TSA meter outputs the product property as "TS7" value.
  • the TS7 value correlates with the softness of the web.
  • a spunbond of rough / dull filaments has a higher TS7 value than a comparable spunbond of smoother / softer filaments.
  • the measurement of the degree of hardness or the volume takes place in the period up to 150 minutes after spunbonding on the surface of the spunbonded nonwoven.
  • spunbonding is meant filing the filaments after their spinning on the tray or on the Ablagesiebband.
  • the measurement is thus carried out in the period up to 150 minutes after this filing of the filaments on the tray or on the Ablagesiebband. It is within the scope of the invention that this measurement takes place after all Vorverfest Trents- and / or consolidation measures, which are performed on the nonwoven - in particular on the tray or on the Ablagesiebband.
  • This is in particular also a solidification by means of a calender with a gravure roll.
  • the measurement of the degree of hardness is thus carried out after these solidifications, but with the proviso that it is carried out in a period of up to 150 minutes after filing of the filaments on the tray or on the Ablagesiebband.
  • the measurement of the degree of hardness prior to winding of the spunbonded on a roll or after winding the spunbonded on a roll but always with the proviso that this measurement is carried out in a period up to 150 minutes after Filamentablage.
  • This sound frequency spectrum is dependent on the overall structure of the nonwoven surface and the amplitude of the volume depends inter alia on the height of the nonwoven structure and on the degree of hardness of the nonwoven surface or the filament surfaces. Properties such as surface topology in the range below 1000 Hz and softness in the range around 6550 Hz become apparent.
  • the TS7 value is used as a characteristic measurement of the degree of hardness in the context of the invention. The percentages given above on differences in the degree of hardness thus relate to this value.
  • the volume or the degree of hardness of the reference web is set equal to 100% and it is determined in relation to the volume or the degree of hardness of the spunbonded nonwoven invention, the percentage deviation.
  • the filaments are preferably placed on a tray, in particular on a filter belt, stored. It is within the scope of the invention that the measurement of the degree of hardness on the surface of the spunbonded non-woven, which faces away from the tray or the Ablagesiebband. If the nonwoven web or the spunbonded nonwoven is solidified by means of a calender with gravure roll, the measurement of the degree of hardness is advantageously carried out on the surface of the spunbonded nonwoven, which faces the gravure roll and preferably it is the surface of the spunbonded by the tray or facing away from the storage screen belt.
  • the spunbonded nonwoven on the one hand and the comparative nonwoven on the other hand are produced under the same conditions, in particular produced with the same system or spunbond system, and are deposited on the same tray or the same filing screen belt. Furthermore, it is within the scope of the invention that the spunbonded fabric on the one hand and the comparative nonwoven fabric on the other are solidified in the same way, in particular solidified with the same calender or the like, and that the filaments of the spunbond fabric on the one hand and the comparison fabric on the other hand have the same denier.
  • Raw material mixtures which are preferably compatible in each case can be used in the core component and / or in the shell component.
  • Core-sheath configuration means in the context of the invention that the sheath component completely or substantially completely surrounds the core component.
  • the continuous filaments of the spunbonded nonwoven preferably have a denier of 1.0 to 2.5 denier and more preferably a titer of 1.2 to 2.2 denier.
  • the core-shell configuration may be an eccentric core-shell configuration.
  • a spiral-crimped filament Preferably then results by suitable choice of raw materials or plastic components, a spiral-crimped filament.
  • the core component and / or the shell component at least 90 wt .-%, preferably at least 95 wt .-% and preferably at least 96 wt .-% of at least one component from the group "polyolefin, polyolefin copolymer, mixture of polyolefin and polyolefin Copolymer "on.
  • the core component and / or the shell component at least 90 wt .-%, preferably at least 95 wt .-%, and preferably at least 96 wt .-% of at least one component selected from the group "polypropylene, polypropylene copolymer, mixture of polypropylene and polypropylene copolymer ".
  • the core component and / or the shell component consists essentially of a polyolefin and / or substantially of a polyolefin copolymer and / or substantially of a mixture of polyolefin and polyolefin copolymer.
  • the core component and / or the sheath component consists essentially of a polypropylene and / or substantially of a polypropylene copolymer and / or essentially of a mixture of a polypropylene and a polypropylene copolymer.
  • the restriction "essentially” in the embodiment variants described above takes account of the fact that additives, in particular the lubricant and optionally an additive which reduces the migration speed of the lubricant, are or are contained in the core component and / or shell component.
  • the proportion of the additives (lubricant, optionally the migration rate of the lubricant reducing additive and any other additives, such as color additives) - based on the total filament - a maximum of 10 wt .-%, preferably at most 8 wt .-%, preferably at most 6% by weight and very preferably at most 5% by weight.
  • the polypropylene copolymer used in the context of the invention is, moreover, designed according to an expedient embodiment as an ethylene-propylene copolymer. Empfohlene endeavor, the ethylene-propylene copolymer used has an ethylene content of 1 to 6%, preferably from 2 to 6%.
  • the preferably used polypropylene copolymer have a melt flow rate (MFI) of 19 to 70 g / min, in particular from 20 to 70 g / min, preferably from 25 to 50 g / min. It has been found that the polypropylene copolymer has a molecular weight distribution or molecular weight distribution (M w / M n ) of from 2.5 to 6, preferably from 3 to 5.5 and very preferably from 3.5 to 5.
  • a recommended embodiment of the invention is characterized in that the core component consists essentially of a homo-polyolefin, in particular substantially of a homo-polypropylene. It has been proven that the core component at least 80 wt .-%, preferably at least 85 wt .-%, preferably at least 90 wt .-% and particularly preferably at least 95 wt .-% of homo-polyolefin, in particular homo-polypropylene has ,
  • a recommended embodiment is further characterized in that the sheath component consists essentially of a polyolefin copolymer, in particular substantially of a polypropylene copolymer and / or substantially of a mixture of a polyolefin or homo-polyolefin with a polyolefin copolymer, in particular essentially consists of a mixture of a polypropylene or homopolymer polypropylene with a polypropylene copolymer.
  • the substances specified below are used as lubricants.
  • a lubricant at least one fatty acid derivative and preferably at least one substance from the group "fatty acid ester, fatty acid, fatty acid amide" used.
  • a recommended embodiment of the invention is characterized in that as a lubricant at least one stearate - in particular glycerol monostearate - and / or a fatty acid amide such.
  • the use of distearylethylenediamide is possible.
  • the erucic acid amide product SL05068PP from Constab is used according to a proven embodiment variant.
  • a variant of the invention is characterized in that both the core component and the sheath component of the endless filaments of the spunbonded nonwoven according to the invention consist of a homo-polyolefin, preferably of a homo-polypropylene, or essentially consist of.
  • the mass ratio between the core component and the shell component is suitably 40:60 to 90:10 and preferably 67:33 to 75:25. It is recommended that the at least one lubricant be admixed only with the core component or that the lubricant be at least 95% by weight, preferably at least 98% by weight, in the core component.
  • a proportion or an average proportion of the lubricant from 250 to 5000 ppm and preferably from 1000 to 5000 ppm are present.
  • a higher shell portion of the filaments with core-sheath configuration hinders the migration of the lubricant from the core more effectively, on the other hand, for the final effect, the lubricant content in the core must continue to rise.
  • limits of the core share down z. B. given by the extruder used or by the recycling of a recyclate in the core.
  • a further embodiment of the invention is characterized in that the core component consists of a homo-polyolefin, in particular a homo-polypropylene or consists essentially and that the shell component of a mixture of a homo-polyolefin, in particular a homo-polypropylene and a polyolefin copolymer, in particular a polypropylene copolymer is or consists essentially.
  • the homo-polyolefin, in particular the homo-polypropylene in the core component is identical to the homo-polyolefin or homo-polypropylene in the sheath component.
  • the proportion of homo-polyolefin, in particular homo-polypropylene in the shell component is 40 to 90 wt .-%, preferably 70 to 90 wt .-% and preferably 75 to 85 wt .-% (based on the shell component).
  • the proportion of the polyolefin copolymer or of the polypropylene copolymer in the shell component is from 50 to 10% by weight, preferably from 30 to 10% by weight and preferably from 25 to 15% by weight (based on the shell component).
  • the polyolefin copolymer used here in particular the polypropylene copolymer has a melt flow rate (MFI) of 5 to 30 g / 10 min, preferably from 5 to 25 g / 10 min.
  • the melt flow rate (MFI) is measured in the context of the invention, in particular according to ISO 1133 and that for polypropylene and polypropylene copolymer at 230 ° C and 2.16 kg.
  • the polyolefin copolymer or the polypropylene copolymer preferably has an ethylene content of from 2 to 20%, preferably from 4 to 20%.
  • the polyolefin copolymer or polypropylene copolymer of this embodiment is preferably characterized in terms of carbon atoms by an average C2 content in the range of 2 to 6%.
  • the polypropylene copolymer used is preferably Exxon Vistamaxx 3588 and / or Exxon Vistamaxx 6202 or a polypropylene having similar properties.
  • the polypropylene copolymer is mixed as described above with the homo-polyolefin or homo-polypropylene for the shell component. Preferred data for the homo-polypropylene are listed below.
  • the spunbonded nonwoven according to the invention can be carried out in view of the thermoplastic used with a recycled recyclate.
  • the recycled stream is used exclusively or primarily for the core component.
  • a recirculated recycled material loaded with lubricant is then returned only to the core component and it is ensured that the jacket component remains free of lubricant or essentially free of lubricant.
  • copolymer is then also converted into the core component. Nonetheless, the jacket remains free of lubricant or substantially free of lubricant.
  • a homo-polypropylene is used in the context of the invention, it is preferably a homo-polypropylene having the following properties.
  • the melt flow rate (MFI) is suitably 17 to 37 g / 10 min, preferably 19 to 35 g / 10 min.
  • the homo-polypropylene is recommended to have a narrow molecular weight distribution in the range of 3.6 to 5.2, in particular in the range of 3.8 to 5 on. The measurement of the molecular weight distribution has already been specified above.
  • At least one of the following products is used as homo-polypropylene: Borealis HF420FB (MFI19), HG455FB (MFI25), HG475FB (MFI25), Basell Moplen HP561R (MFI25) and Exxon 3155 PP (MFI35).
  • homo-polypropylene and / or polypropylene copolymer in particular ethylene-propylene copolymer and / or mixtures thereof are used both for the core component and for the shell component.
  • the PP materials have proven particularly useful in the context of the invention.
  • a spunbonded nonwoven according to the invention is produced by a spunbond process.
  • first multicomponent filaments or bicomponent filaments with core-sheath configuration are wound as endless filaments by means of at least one spinnerette and then these endless filaments are cooled in at least one cooling device and then the endless filaments pass through a stretching device for drawing the filaments.
  • the drawn filaments are deposited on a tray, in particular on a Ablagesiebband as spunbonded.
  • a particularly recommended embodiment of the invention in this context is characterized in that the unit of the cooling device and the drafting device is designed as a closed unit, wherein apart from the supply of cooling air in the cooling device takes place no further air supply into the closed unit.
  • This closed embodiment has proven particularly useful in the context of the invention in the production of a spunbonded fabric according to the invention.
  • At least one diffuser is arranged between the stretching device and the tray or the Ablagesiebband.
  • the continuous filaments emerging from the drawing device are passed through this diffuser and then deposited on the tray or on the filing screen belt.
  • a recommended embodiment of the invention is characterized in that between the drawing device and the tray at least two Diffusers, preferably two diffusers in the filament flow direction are arranged one behind the other.
  • at least one secondary air inlet gap for the entry of ambient air is present between the two diffusers.
  • the embodiment with the at least one diffuser or with the at least two diffusers and the secondary air inlet gap has also proven particularly suitable with regard to the production of the spunbonded nonwovens according to the invention.
  • the preconsolidation or solidification of the spunbonded fabric expediently takes place with at least one calender.
  • two interacting calender rolls are preferably used.
  • at least one of these calender rolls is designed to be heated.
  • the embossing surface of the calender is expediently 8 to 20%, for example 12%.
  • the degree of softness in a spunbonded nonwoven according to the invention, on the one hand, and a comparative nonwoven, on the other hand, is determined, the same preconsolidation or solidification of the spunbonded nonwoven takes place in both nonwovens.
  • the invention is based on the finding that the spunbonded nonwovens according to the invention have an optimally smooth, soft feel and nonetheless high strength. This results in soft spunbonded nonwovens with good tensile strength. This is especially true for the preferred use of the polypropylene or polypropylene copolymers for the core component and / or shell component of the continuous filaments of the spunbonded nonwoven according to the invention. It is also essential that, compared to known solutions, the evaporation of lubricant from the filaments can be effectively reduced, thereby avoiding undesirable deposits in the system. Thus The cleanliness of the system can be increased compared to the known measures and thereby the efficiency and availability of the system can be increased. In particular, the system runtime can be increased.
  • the invention is also based on the finding that an inhomogeneous introduction of the lubricant into the filaments effectively contributes to the solution of the technical problem according to the invention.
  • a comparable strength of the nonwovens can be achieved in comparison with the measures known from practice in the production of the spunbonded nonwovens according to the invention and in particular during the consolidation of the spunbonded nonwovens at lower energy consumption. Due to the high strength of the spunbonded fabric achieved according to the invention, material can also be saved in the production of the continuous filaments, in particular in comparison to other combinations of raw materials, such as PP / PE. Furthermore, in the production of the spunbonded nonwovens according to the invention, a simple recycling of the components into the production process can take place.
  • Subsequently spunbonded bicomponent filaments of core-sheath configuration were prepared by the spunbond process described above. Homo-polypropylenes and polypropylene copolymers were used as material for the two components (core and sheath).
  • the deposited on the Ablagesiebband spunbonded in all embodiments solidified with a calender engraved with U5714A (12% imprint area, round engraving points, 25 Fig / cm 2 ).
  • the fineness of the filaments of all examples was about 1.6 to 1.8 denier. All samples were produced with a spinning system at the same or similar throughputs.
  • Homo-polypropylene monocomponent filaments (Borealis HG455FB with MFI25) were prepared. The calendering was carried out at a surface temperature of the calender rolls of about 148 ° C. The spunbonded web produced has good strength, but in comparison to the following embodiments, but no satisfactory soft grip.
  • a bicomponent spunbonded spunbonded web was produced, with both the core component and the jacket component consisting of homo-polypropylene (Borealis HG455FB with MFI25) containing 8% of a polypropylene from Idemitsu "L-MODU X901S" as a soft additional polypropylene.
  • the mass ratio between the core component and the shell component was 70:30.
  • Only in the core was the lubricant SL05068PP from Constab based on erucic acid amide. The content of the lubricant was 2000 ppm with respect to the entire filament.
  • the spunbonded web was calendered at a calender roll surface temperature of about 142 ° C. The spunbonded web produced from these continuous filaments exhibited a smooth, soft feel after one day of deposition.
  • the bicomponent filaments of this spunbonded web contained homopolypropylene (Basell Moplen HP561R with MFI25) in both the core component and the shell component with 10% by weight of a soft additive copolypropylene (Exxon Vistamaxx VM 6202).
  • the mass ratio between the core component and the shell component was also 70:30 here.
  • SL05068PP from Constab based on erucic acid amide was again used as the lubricant.
  • This lubricant was contained only in the core and the content of the lubricant was 2500 ppm based on the entire filament.
  • the calendering of the spunbonded fabric was carried out at a surface temperature of the calender rolls of 132 ° C.
  • the handle of the produced filament had to be classified as blunt at first, after a day of storage a smooth, soft handle appeared. This shows the delayed migration of the lubricant.
  • the bicomponent filaments of this spunbonded web contained homo-polypropylene (Borealis HG475FB) in the core and polypropylene copolymer (Basell Moplen RP248R with MFI 30) in the shell.
  • the mass ratio between the core component and the shell component was 70:30.
  • the polypropylene copolymer of the shell contains a nucleating agent and an antistatic agent.
  • the calendering of the spunbonded fabric took place at a surface temperature of the calender rolls of 121.degree.
  • the handle of the produced spunbonded fabric had initially to be classified as blunt, after a day of storage, a smooth, soft feel of the fleece was established. This in turn shows a delayed migration of the lubricant or antistatic here.
  • the core component of the bicomponent filaments of this spunbonded web was homo-polypropylene (Borealis HG475FW with MFI25) and the shell component was polypropylene copolymer (Basell Moplen RP248R with MFI30).
  • the mass ratio between the core component and the shell component was 50:50.
  • the polypropylene copolymer contained a nucleating agent and an antistatic agent.
  • the solidification was carried out with calender rolls with a surface temperature of 121 ° C.
  • the handle of the spunbonded fabric was initially dull and after a day's storage time then turned a smooth, soft handle. This again shows the delayed migration of the stearate used as lubricant.
  • there is a reduced strength of the nonwoven fabric see Table below), which is due to the larger proportion of polypropylene copolymer compared to the homo-polypropylene.
  • the bicomponent filaments of this spunbonded fabric had homo-polypropylene (Borealis HG475FB with MFI25) in the core and polypropylene copolymer in the shell.
  • the mass ratio of the core component to the shell component was 70:30.
  • the polypropylene copolymer used is comparable to the copolymer Moplen RP248R, but has no nucleating agent and no antistatic agent.
  • Hardening of the spunbonded web was carried out with calender rolls having a surface temperature of 121 ° C. Even after three-day storage time, the spunbonded fabric produced in this way did not reach the smooth, soft feel of embodiment 3. This shows that the use of polypropylene copolymer alone is not sufficient and a migrating lubricant is required for realizing the properties according to the invention.
  • the spunbonded nonwovens of the embodiments 3 to 5 were solidified at a significantly lower calender than in Comparative Example V. Nevertheless, comparable strengths are observed, so that the energy expenditure in the production of spunbonded nonwoven fabric according to embodiments 3 to 5 could be reduced.
  • the lower calender temperature supports the soft grip and thus allows a reduction in the additional lubricant to be added.
  • This embodiment relates to the difference in the degree of hardness or in relation to the hardness measurements listed. Measurements of the degree of hardness were carried out on a spunbonded fabric S1 according to the invention and on a comparative nonwoven fabric V1 with a commercially available measuring device TSA (Tissue Softness Analyzer) from Emtec, Leipzig, Germany. The measuring method has already been explained above.
  • the measuring head was pressed onto the nonwoven surface with a force of 100 mN. It was measured here on the spunbonded surface facing away from the filing screen belt.
  • the measuring head was equipped with eight rotating or rotatable measuring sheets and the speed during the measurement was 2 / sec.
  • the spunbond of the invention and the reference fleece each a volume / frequency spectrum was recorded and in each case the volume of the peak maximum (TS7 value) was determined at 6550 Hz. In each case 5 individual measurements were averaged.
  • the two spunbond webs were made with the same spunbond apparatus, pre-consolidated in the same manner (ie, under the same conditions of calender consolidation), and both spunbonded webs had filaments of the same denier of 1.8 deniers. The difference between the filaments of the two spunbonded nonwovens was the distribution of the lubricant in the polymer melt as it exited the spinning plate before spinning to the respective filament.
  • the filaments consisted of a homogeneous mixture of homo-polypropylene and polypropylene copolymer.
  • the raw materials for the bicomponent filaments were chosen analogously to the above exemplary embodiment 2, the lubricant proportion based on the total filament was 2000 ppm and a calender engraving "U2888" with 19% surface area was used.
  • the content of the core was 50% (mass ratio between core component and shell component 50:50).
  • To the core component of the bicomponent filaments were correspondingly added 4000 ppm of lubricant.
  • As comparison fleece V1 a spunbonded fabric with filaments of the same components was used, but the lubricant was distributed homogeneously at 2000 ppm over the filament cross section.
  • volume values were determined for three times, namely 15 minutes, 2 hours and 96 hours after the filaments had been deposited on a support belt.
  • Volume values for the spunbonded fabric S1 according to the invention and for the comparative nonwoven fabric V1 are shown in the following table: L (dBV 2 rms) in % S1 V1 S1 V1 15 minutes 4.31 3.98 108.2 100 2 hours. 4.42 4.16 106.3 100 96 hours 3.93 3.84 102.2 100
  • the single figure shows the volume values TS7 (in dBV 2 rms) of the peak maximum at 6550 Hz as a function of the time of measurement.
  • the TS7 value is displayed, which was determined 15 minutes after the filament deposit, and to the right is the TS7 value, which was determined 2 hours after the filament deposit.
  • the TS7 value which was determined 4 days or 96 hours after filament storage.
  • the solid line characterizes the TS7 values for the spunbonded fabric S1 according to the invention and the dashed line shows the TS7 values for the comparative nonwoven fabric V1.
  • the spunbonded fabric S1 according to the invention initially (after 15 minutes and after 2 hours) has a significantly higher volume level and thus a lower degree of softness or higher degree of hardness than the comparative nonwoven fabric V1.
  • the comparison fleece however, there is a relatively rapid migration, so that here already relatively high degrees of softness or low degrees of hardness can be achieved.
  • the increase in the curve between 15 minutes and 2 hours for both spunbonded fabrics is explained by the first postcrystallization of the polypropylene blend which stiffens the filaments. This shape of the curves may seem like typically apply to this combination of raw materials.
  • the winding behavior is positively influenced.
  • the volume value of the spunbonded fabric according to the invention is more than 3% higher than the volume value of the comparative nonwoven fabric V1 within the first 150 minutes after the filament deposition, and the degree of firmness of the spunbonded fabric S1 according to the invention is correspondingly higher than 3% higher than the degree of hardness of the reference web V1.
  • the finished spunbonded fabrics have become softer, independent of any subsequent post-crystallization, which proves the effect and meaning of the lubricant.
  • the raw material combination was chosen according to Embodiment 5, but with a lubricant.
  • the core used was a homopolypropylene Moplen HP561R and in the jacket the random CoPP with MFR 30 from Example 5.
  • a core-sheath ratio of 70:30 was set and the same calender temperature was used as in Embodiment 6.
  • 2900 ppm of lubricant were metered in only in the core.
  • fleece V2 in each case 2,000 ppm of lubricant were added both in the core and in the sheath.
  • the deposited spunbonded fabric is softer (lower in TS7 value) than the newly produced spunbonded fabric.
  • the following table shows the TS7 relation of spunbonded fabrics S according to the invention to comparative nonwovens V (embodiments 6 and 7) after 15 minutes, 2 hours and 96 hours, and the strength values after production and the basis weights of the spunbonded nonwovens. Strengths and basis weights were determined according to the methods described above, using a peel rate of 200 mm / min for the strength measurement.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Multicomponent Fibers (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

Claims (9)

  1. Filé-lié composé de filaments continus en matière thermoplastique, les filaments continus étant conçus sous la forme de filaments multi-composants présentant une configuration âme-enveloppe, notamment sous la forme de filaments bicomposants présentant une configuration âme-enveloppe, les filaments contenant au moins un lubrifiant, le lubrifiant étant présent exclusivement ou à raison d'au moins 90 % en poids, de préférence d'au moins 95 % en poids dans le composant de l'âme, le rapport en masse entre le composant de l'âme et le composant de l'enveloppe étant de 50 : 50 à 90 : 10, de préférence de 60 : 40 à 85 : 15, de manière préférentielle, de 65 : 35 à 80 : 20 et de manière particulièrement préférentielle, de 65 : 35 à 75 : 25 et la part en lubrifiant (rapportée à l'ensemble du filament) étant de 250 à 5500 ppm, de préférence de 500 à 5000 ppm, de manière préférentielle, de 700 à 3000 ppm et de manière particulièrement préférentielle, de 700 à 2500 ppm.
  2. Filé-lié selon la revendication 1, le rapport en masse entre le composant de l'âme et le composant de l'enveloppe étant de 67 : 33 à 73 : 27 et de manière préférentielle, de 70 : 30 respectivement d'environ 70 : 30.
  3. Filé-lié selon l'une quelconque des revendications 1 ou 2, le composant de l'âme et/ou le composant de l'enveloppe comportant au moins 90 % en poids, de préférence au moins 95 % en poids et de manière préférentielle, au moins 96 % en poids d'au moins un composant du groupe « polyoléfine, copolymère de polyoléfine, mélange de polyoléfine et de copolymère de polyoléfine.
  4. Filé-lié selon l'une quelconque des revendications 1 à 3, le composant de l'âme et/ou le composant de l'enveloppe comportant au moins 90 % en poids, de préférence au moins 95 % en poids et de manière préférentielle, au moins 96 % en poids d'au moins un composant du groupe « polyoléfine, copolymère de polyoléfine, mélange de polyoléfine et de copolymère de polyoléfine.
  5. Filé-lié selon l'une quelconque des revendications 1 à 4, le composant de l'âme étant constitué, respectivement étant essentiellement constitué d'une homo-polyoléfine, notamment d'un homo-polypropylène ou le composant de l'âme comportant au moins 80 % en poids, de préférence au moins 85 % en poids, de manière préférentielle, au moins 90 % en poids de manière particulièrement préférentielle, au moins 95 % en poids de l'homo-polyoléfine, notamment de l'homo-polypropylène
  6. Filé-lié selon l'une quelconque des revendications 1 à 5, le composant de l'enveloppe étant constitué ou étant essentiellement constitué d'un copolymère de polyoléfine, notamment d'un copolymère de polypropylène et/ou d'un mélange d'une polyoléfine avec un copolymère de polyoléfine, notamment d'un polypropylène avec un copolymère de polypropylène.
  7. Filé-lié selon l'une quelconque des revendications 1 à 6, le copolymère de polyoléfine, notamment le copolymère de polypropylène présentant une distribution du poids moléculaire ou une distribution de la masse moléculaire (Mw/Mn) de 2,5 à 6, de manière préférentielle, de 3 à 5,5 et manière très préférentielle, de 3,5 à 5.
  8. Filé-lié selon l'une quelconque des revendications 1 à 7, en tant que lubrifiant étant mis en oeuvre au moins un dérivé d'acide gras et de manière préférentielle, au moins une substance du groupe « ester d'acide gras, alcool d'acide gras, amide d'acide gras ».
  9. Filé-lié selon l'une quelconque des revendications 1 à 8, en tant que lubrifiant étant mis en oeuvre au moins un stéarate et/ou au moins un érucamide et/ou au moins un amide d'acide oléique.
EP17171592.3A 2016-05-18 2017-05-17 Non-tissé constitué de filaments continus Active EP3246447B1 (fr)

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PL17171592T PL3246447T3 (pl) 2016-05-18 2017-05-17 Włóknina typu spunbond z filamentów ciągłych
DK19177272.2T DK3569753T3 (da) 2016-05-18 2017-05-17 Fremgangsmåde til fremstilling af filterdug af endeløse filamenter
EP19177272.2A EP3569753B1 (fr) 2016-05-18 2017-05-17 Procédés de production de non-tissés de filaments continus
PL17193288T PL3296438T3 (pl) 2016-05-18 2017-05-17 Włóknina otrzymana metodą spod filiery z włókien ciągłych
PL19177272T PL3569753T3 (pl) 2016-05-18 2017-05-17 Sposób wytwarzania włókniny typu spunbond z filamentów ciągłych
EP17193288.2A EP3296438B1 (fr) 2016-05-18 2017-05-17 Non-tissé constitué de filaments continus
DK17193288.2T DK3296438T3 (da) 2016-05-18 2017-05-17 Filterdug af endeløse filamenter

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DE102016109115.4A DE102016109115A1 (de) 2016-05-18 2016-05-18 Spinnvlies aus Endlosfilamenten

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EP19177272.2A Division EP3569753B1 (fr) 2016-05-18 2017-05-17 Procédés de production de non-tissés de filaments continus
EP19177272.2A Division-Into EP3569753B1 (fr) 2016-05-18 2017-05-17 Procédés de production de non-tissés de filaments continus
EP17193288.2A Division EP3296438B1 (fr) 2016-05-18 2017-05-17 Non-tissé constitué de filaments continus
EP17193288.2A Division-Into EP3296438B1 (fr) 2016-05-18 2017-05-17 Non-tissé constitué de filaments continus

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ES2911184T3 (es) * 2019-07-30 2022-05-18 Reifenhaeuser Masch Dispositivo y procedimiento para producir un material no tejido
JP2022117962A (ja) * 2021-02-01 2022-08-12 ライフェンホイザー・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング・ウント・コンパニー・コマンデイトゲゼルシャフト・マシイネンファブリーク スパンボンド不織布積層体及びスパンボンド不織布積層体の製造方法
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MX371463B (es) 2020-01-27
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EP3296438B1 (fr) 2020-04-01
MY198845A (en) 2023-10-02
MY198846A (en) 2023-10-02
MX2018012969A (es) 2019-03-28
EP3569753A1 (fr) 2019-11-20
BR112018072335A2 (pt) 2019-02-19
ES2751134T3 (es) 2020-03-30
AR110601A1 (es) 2019-04-17
EP3569753B1 (fr) 2022-02-16
ES2911262T3 (es) 2022-05-18
US20190194826A1 (en) 2019-06-27
EP3246447A1 (fr) 2017-11-22
CN109154117B (zh) 2021-08-03
ZA201906809B (en) 2021-03-31
KR102396246B1 (ko) 2022-05-09
WO2017198730A1 (fr) 2017-11-23
ZA201806891B (en) 2019-12-18
EP3296438A1 (fr) 2018-03-21
CN113062050A (zh) 2021-07-02
DE102016109115A1 (de) 2017-11-23
JP2020117852A (ja) 2020-08-06
CN109154117A (zh) 2019-01-04
US11788208B2 (en) 2023-10-17
DK3569753T3 (da) 2022-04-04
MY189928A (en) 2022-03-22
KR20210075215A (ko) 2021-06-22
JP7066769B2 (ja) 2022-05-13
DK3296438T3 (da) 2020-06-02
ES2796629T3 (es) 2020-11-27
JP2019516874A (ja) 2019-06-20
PL3246447T3 (pl) 2020-02-28
PL3296438T3 (pl) 2020-09-21
PL3569753T3 (pl) 2022-06-20
JP2022081627A (ja) 2022-05-31
CN113062050B (zh) 2022-12-16
KR102335064B1 (ko) 2021-12-03
JP2020117853A (ja) 2020-08-06

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