DK149869B - BICOMPONENT FILAMENTS BASED ON POLYETHYLENTE REPHTHALATE AND CIRCULAR POLYBUTYLENTE REPHTHALATE AND PROCEDURE FOR THEIR PREPARATION - Google Patents
BICOMPONENT FILAMENTS BASED ON POLYETHYLENTE REPHTHALATE AND CIRCULAR POLYBUTYLENTE REPHTHALATE AND PROCEDURE FOR THEIR PREPARATION Download PDFInfo
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- DK149869B DK149869B DK83777A DK83777A DK149869B DK 149869 B DK149869 B DK 149869B DK 83777 A DK83777 A DK 83777A DK 83777 A DK83777 A DK 83777A DK 149869 B DK149869 B DK 149869B
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- polybutylene terephthalate
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- polyethylene terephthalate
- rephthalate
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- 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
- D01F8/14—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyester as constituent
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- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
- Multicomponent Fibers (AREA)
- Artificial Filaments (AREA)
Description
o i 149869o in 149869
Den foreliggende opfindelse angår bikomponentfilamenter på basis af polyethylenterephthalat og tværbundet polybutylenterephthalat. Opfindelsen angår desuden en fremgangsmåde til fremstilling af disse bikomponent-5 filamenter.The present invention relates to bi-component filaments based on polyethylene terephthalate and cross-linked polybutylene terephthalate. The invention further relates to a process for producing these bicomponent filaments.
I bikomponentfilamenterne ifølge den foreliggende opfindelse har de to forskellige bestanddele begge en kontaktoverflade udadtil i hele filamenternes længde. De har altså side-ved-side struktur og ikke kerne-kappe struktur.In the bicomponent filaments of the present invention, the two different components both have an exterior contact surface throughout the length of the filaments. So they have side-by-side structure and not core-sheath structure.
10 I fransk patentskrift nr. 2.182.766 beskrives poly- ester-bikomponentfilamenter med permanent krusning og elasticitet. Den ene af komponenterne består af polyethylenterephthalat og den anden af tværbundet polybutylenterephthalat.French Patent Specification No. 2,182,766 describes polyester bicomponent filaments with permanent ripple and elasticity. One of the components consists of polyethylene terephthalate and the other of cross-linked polybutylene terephthalate.
Når det tværbundne polybutylenterephthalat i disse bikompo-15 nentfilamenter har en viskositet i smeltet tilstand på mellem 3500 og 5500 P ved 260°C, har bikomponentfilamenteme imidlertid en utilstrækkelig krusning og fremfor alt en utilstrækkelig krusningskraft.However, when the cross-linked polybutylene terephthalate in these bicomponent filaments has a molten state viscosity of between 3500 and 5500 P at 260 ° C, the bicomponent filaments have an insufficient ripple and, above all, an insufficient ripple.
I fransk patentskrift nr. 1.442.768 beskrives en 20 fremstilling af sammensatte filamenter, som har eller kan udvikle spiralkrusning, og som består af polyethylenterephthalat og polybutylenterephthalat.French Patent Specification No. 1,442,768 discloses a fabrication of composite filaments having or capable of developing spiral crushing consisting of polyethylene terephthalate and polybutylene terephthalate.
I fransk tillægspatentskrift nr. 50780/837555 beskrives en fremgangsmåde til fremstilling af sammensatte filamenter 25 ved hjælp af en anordning omfattende to plader, hvis perforeringer er forskudt på en sådan måde, at væskestrålerne er exentriske i forhold til hinanden.French Additional Patent Publication No. 50780/837555 describes a method of making composite filaments 25 by means of a device comprising two plates whose perforations are offset in such a way that the liquid jets are eccentric relative to each other.
I britisk patentskrift nr. 1.258.760 beskrives et mundstykke til fremstilling af bikomponentfilamenter. Dette 30 mundstykke omfatter en mundstykkeplade og en fordelingsblok omfattende to horisontale kanaler langs mundstykkets overflade, hvilke kanaler forbinder to sidebeholdere indeholdende den samme polymer med en mundstykkeåbning, og en vertikal kanal, der er smallere end de horison-35 tale kanaler, og som forbinder en central beholder indeholdende en anden polymer med samme mundstykkeåbning ved at strække sig vinkelret mod de horisontale kanaler og iBritish Patent Specification No. 1,258,760 discloses a nozzle for making bicomponent filaments. This mouthpiece comprises a mouthpiece plate and a distribution block comprising two horizontal channels along the surface of the mouthpiece which connect two side containers containing the same polymer with a mouthpiece opening and a vertical channel narrower than the horizontal channels connecting one central container containing a second polymer having the same nozzle opening by extending perpendicular to the horizontal channels and in
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2 149869 kontakt med en af disse kanalers vægge. I de fremstillede filamenters tværsnit udgør den centrale polymer kun en lille del af overfladen. I mellemrummet mellem fordelingspladen og mundstykket er den centrale polymer desuden ikke fuld-5 stændig omsluttet af den anden polymer, eftersom sidstnævnte ledes gennem to modstående horisontale kanaler, og eftersom den centrale polymer kommer i kontakt med en f.2 149869 contact with one of the walls of these channels. In the cross-section of the filaments made, the central polymer forms only a small part of the surface. In addition, in the space between the distribution plate and the nozzle, the central polymer is not completely enclosed by the second polymer, since the latter is passed through two opposite horizontal channels and as the central polymer comes into contact with a f.
af disse kanalers vægge.of the walls of these channels.
Det har været formålet med opfindelsen at tilveje-10 bringe bikomponentfilamenter med bedre krusningsegenskaber end de ovennævnte kendte filamenter.It has been the object of the invention to provide bicomponent filaments with better ripple properties than the aforementioned known filaments.
Opfindelsen angår således bikomponentfilamenter, hvis komponenter har forskellige krympningsegenskaber og udgøres af polyethylenterephthalat og tværbundet poly-15 butylenterephthaiat, hvor polybutylenterephthaiatkompo nenten har en viskositet i smeltet tilstand ved 260°C større end eller lig med 2000 P, hvilke bikomponente fil amenter er ejendommelige ved, at polybutylenterephthalatkomponenten, i tværsnit, er delvist omsluttet af polyethylenterephthalat- on komponenten. Det tværbundne polybutylenterephthalat har fortrinsvis en viskositet i smeltet tilstand ved 260°C større end eller lig med 4000 P.The invention thus relates to bicomponent filaments whose components have different shrinkage properties and are constituted by polyethylene terephthalate and crosslinked polybutylene terephthalate, wherein the polybutylene terephthalate component has a molten state viscosity at 260 ° C greater than or equal to 2000 P that the polybutylene terephthalate component, in cross section, is partially enclosed by the polyethylene terephthalate component. The crosslinked polybutylene terephthalate preferably has a molten state viscosity at 260 ° C greater than or equal to 4000 P.
Opfindelsen angår endvidere en fremgangsmåde til fremstilling af disse bikomponentfilamenter, hvis 25 komponenter har forskellige krympningsegenskaber, hvorved et polyethylenterephthalat og et tværbundet polybutylenterephthalat med en viskositet i smeltet tilstand ved 260°C på mindst 2000 P spindes samtidigt i smeltet tilstand i en anordning omfattende en dyseplade med et antal 30 boringer, der hver ender i en dyseåbning, og en fordeler-plade, der er anbragt oven for dysepladen og er gennemboret af en til fremførsel af tværbundet polybutylenterephthalat beregnet kanal for hver dysepladeboring, hvilken fremgangsmåde er ejendommelig ved, at hver kanal har en mindre 35 diameter end den tilsvarende dysepladeboring og er anbragt på decentreret måde i forhold til denne med en 3The invention further relates to a process for producing these bicomponent filaments, the components of which have different shrinkage properties, whereby a polyethylene terephthalate and a crosslinked polybutylene terephthalate having a molten state viscosity at 260 ° C of at least 2000 P are simultaneously spun in a molten state in a device comprising having a plurality of 30 bores each ending in a nozzle opening and a distributor plate disposed above the nozzle plate and pierced by a channel for conveying crosslinked polybutylene terephthalate for each nozzle plate bore, characterized in that each channel has a smaller diameter than the corresponding nozzle plate bore and is spaced apart in relation to this with a 3
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149889 afstand mellem boringens akse og kanalens akse, der mindst er lig med differensen mellem radierne, og at det gennem hver kanal fremførte tværbundne poly-butylenterephthalat i rummet mellem dysepladen og 5 fordelerpladen er fuldstændig omsluttet af polyethylen-terephthalatet.The distance between the axis of the bore and the axis of the channel, which is at least equal to the difference between the radii, and that the cross-linked polybutylene terephthalate passed through each channel in the space between the nozzle plate and the distributor plate is completely enclosed by the polyethylene terephthalate.
Med udtrykket "omsluttet" menes, at skillelinien mellem komponenten af polyethylenterephthalat (PET) og komponenten af tværbundet polybutylenterephthalat (PETR) er krum, idet 10 den konkave side vender mod PBTR-komponenten. Med udtrykket "delvis omsluttet" menes, at PBTR-komponenten danner en del af filamenternes omkreds, dvs. filamenterne har ikke en kerne-kappe-struktur, men en side-ved-side-struktur.By the term "enclosed" is meant that the dividing line between the component of polyethylene terephthalate (PET) and the component of cross-linked polybutylene terephthalate (PETR) is curved, with the concave side facing the PBTR component. By the term "partially enclosed" is meant that the PBTR component forms part of the perimeter of the filaments, i.e. the filaments do not have a core-sheath structure, but a side-by-side structure.
Den angivne placering af komponenterne i bikomponent-15 filamenterne ifølge opfindelsen indebærer altså, at komponenten med den største krympning, det tværbundne polybutylenterephthalat, som uafhængigt af fremstillingsmetoden vil være tilbøjeligt til at placere sig i det indre af den helix, som hvert filament danner, når krympningen udløses, ligeledes 20 i forhold til sin andel i høj grad er placeret i det indre af tværsnittet af hvert filament, hvilket bevirker en ny og overraskende effekt, nemlig at der ved udløsning af krympningen sker frigørelse af hele krusningspotentiellet, hvilket ved visse anvendelser, hvor volumenet af fibrene er af betydning, 25 især ved f.eks. isolering og polstring, gør det muligt at fremstille produkter, hvis krusning er meget voluminøs. Ikke blot forbedres krusningsfrekvensen, men halvafkrusningskraf-ten og halvgenkrusningskraften, der er et mål for krusningens stabilitet, forbedres også.Thus, the indicated location of the components of the bicomponent filaments of the invention implies that the component of greatest shrinkage, the crosslinked polybutylene terephthalate, which, independently of the manufacturing method, will tend to position within the helix formed by each filament when the shrink is triggered, likewise 20 relative to its proportion is largely located within the interior of the cross-section of each filament, causing a new and surprising effect, namely that upon release of the shrinkage, the entire ripple potential is released, which in some applications, wherein the volume of the fibers is significant, especially in e.g. insulation and padding, makes it possible to produce products whose ripple is very voluminous. Not only does the ripple frequency improve, but the half-ripple and half-ripple force, which is a measure of the ripple's stability, is also improved.
30 Polyethylenterephthalatet føres til mellemrummet mellem dysepladen og fordelerpladen på en hvilken som helst egnet måde, f.eks. ved hjælp af åbninger i fordelerpladen, hvorved disse åbninger har en større diameter end kanalerne til fremførsel af polybutylen-35 terephthalatet.The polyethylene terephthalate is passed to the space between the nozzle plate and the distributor plate in any suitable manner, e.g. by means of openings in the distributor plate, these openings having a larger diameter than the channels for conveying the polybutylene terephthalate.
Det i bikomponentfilamenterne ifølge opfindelsen anvendte polyethylenterephthalat har en viskositet i smeltet tilstand ved 290°C på mellem 1000 og 3000 P, fortrinsvis mellem 1500 og 2500 P.The polyethylene terephthalate used in the bicomponent filaments of the invention has a molten state viscosity at 290 ° C of between 1000 and 3000 P, preferably between 1500 and 2500 P.
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Polybutylenterephthalatet er tværbundet ved hjælp af polyfunktionelle forbindelser, der indeholder tre eller fire esterdannende grupper. Blandt disse forbindelser kan der nævnes trioler og tetraoler, såsom trimethylolpropan, 5 trimethylolethan, pentaerythritol og glycerol, trisyrer og tetrasyrer, såsom trimesinsyre, trimellitsyre og dens anhydrid, pyromellitsyre og dens anhydrid, polyphenoler, såsom floroglucinol og hydroxyhydroquinon, aminosyrer og syrealkoholer, såsom hydroxyisophthalsyre, aminoisophthal-10 syre, etc. Den anvendte mængde tværbindingsmiddel er mellem 0,20 og 0,60 molprocent, henført til antallet af terephthalat-enheder.The polybutylene terephthalate is crosslinked by polyfunctional compounds containing three or four ester forming groups. Among these compounds are triols and tetraols such as trimethylolpropane, trimethylolethane, pentaerythritol and glycerol, tris acids and tetraacids such as trimesic acid, trimellitic acid and its anhydride, pyromellitic acid and its anhydride, polyphenols such as floroglucinol, , aminoisophthalic acid, etc. The amount of cross-linking agent used is between 0.20 and 0.60 mole percent, due to the number of terephthalate units.
Polybutylenterephthalatets viskositet i smeltet tilstand ved 260°C er som nævnt større end eller lig med 15 2000 P, fortrinsvis større end 4000 P. Viskositeten kan gå op til høje værdier, såsom 10.000 P eller 12.000 P eller endnu højere. Jo højere viskositet det tvær-bundne polybutylenterephthalat har i smeltet tilstand, desto bedre er filamenternes krusningsegenskaber, 20 I fig. 1 på tegningen vises et tværsnit af et bikomponentfilament ifølge opfindelsen, hvor A er poly-butylenterephthalatøt, og B er polyethylenterephthalatet.As mentioned, the viscosity of the polybutylene terephthalate in the molten state at 260 ° C is greater than or equal to 15,000 P, preferably greater than 4000 P. The viscosity can go up to high values such as 10,000 P or 12,000 P or even higher. The higher the viscosity of the cross-linked polybutylene terephthalate in the molten state, the better the ripple properties of the filaments. 1 shows a cross section of a bicomponent filament according to the invention, where A is polybutylene terephthalate and B is the polyethylene terephthalate.
I fig. 2 vises til sammenligning et bikomponentfila-ment ifølge det franske patentskrift nr. 2.182.766, hvor 25 anordningen af de to faser A og B er omvendt.In FIG. In comparison, 2 shows a bicomponent filament according to French Patent Specification No. 2,182,766, wherein the arrangement of the two phases A and B is reversed.
Anordningen af de to faser A og B i fig. 1 indebærer, at polybutylenterephthalatfasen A med den kraftigste krympning er delvis omsluttet af polyethylenterephtha-latfasen B.The arrangement of the two phases A and B of FIG. 1 implies that the polybutylene terephthalate phase A with the strongest shrinkage is partially enclosed by the polyethylene terephthalate phase B.
30 De to tørre polymere smeltes hver for sig enten i smeltedigler eller i ekstruderingsmaskiner, hvorved polyethylenterephthalatet smeltes ved 275-300°C og det tværbundne polybutylenterephthalat ved 255-265°C.The two dry polymers are separately melted either in crucibles or in extrusion machines, whereby the polyethylene terephthalate is melted at 275-300 ° C and the cross-linked polybutylene terephthalate at 255-265 ° C.
De smeltede polymere pumpes hver for sig ved hjælp 35 af doseringspumper til det anvendte spindingsapparat.The molten polymers are separately pumped by means of metering pumps for the spinning apparatus used.
Forholdet mellem de to polymere kan variere mellem 149869 5 o 80:20 og 20:80. I praksis forholder det sig således, at selv om de to bestanddele føres til mundstykket i et forhold på 50:50/ får hvert filament ikke nødvendigvis et forhold mellem bestanddele på 50:50. Der optræder 5 nemlig på grund af strømningsfluktuationer og på grund af bevægeligheden mellem fordelingspladerne lette, men uundgåelige variationer i forholdet mellem komponenterne. De to polymere ekstruderes sammen gennem samme dyseåbning ved hjælp af et apparat som vist skematisk 10 i fig. 3.The ratio of the two polymers may vary between 80:20 and 20:80. In practice, although the two constituents are fed to the mouthpiece at a ratio of 50: 50 / each filament does not necessarily obtain a ratio of constituents of 50:50. Namely, 5 due to flow fluctuations and due to the movement of the distribution plates, slight but inevitable variations in the ratio of the components occur. The two polymers are extruded together through the same nozzle opening by means of an apparatus as shown schematically in FIG. Third
I fig. 3 vises i tværsnit de to polymerers strømning ifølge en udførelsesform for fremgangsmåden ifølge opfindelsen. Polybutylenterephthalatet strømmer i smeltet tilstand gennem en kanal 4 i en fordelerplade 1, 1 c strømmer derefter mod en skråkant 2 i en boring 3, gennem boringen 3 og endelig gennem en dyseåbning 5. Polyethylen-terephthalatet trænger gennem fordelerpladen via kanaler 6 og 7, strømmer gennem et mellemrum 8 mellem fordelerpladen 9 og en dyseplade 10, medens det fuldstæn- 20 digt og excentrisk omslutter polybutylenterephthalatet og strømmer derefter gennem boringen 3 og dyseåbningen 5.In FIG. 3 is a cross-sectional view of the flow of the two polymers according to an embodiment of the method according to the invention. The polybutylene terephthalate flows in a molten state through a channel 4 in a distributor plate 1, 1c then flows towards an inclined edge 2 in a bore 3, through the bore 3 and finally through a nozzle opening 5. The polyethylene terephthalate penetrates through the distributor plate via channels 6 and 7. through a gap 8 between the distributor plate 9 and a nozzle plate 10 while completely and eccentrically enclosing the polybutylene terephthalate and then flowing through the bore 3 and the nozzle opening 5.
Kanalen 4 gennem fordelerpladen 1 har mindre diameter end boringen 3, og kanalen 4 og boringen 3 er decentrerede i forhold til hinanden.The channel 4 through the distributor plate 1 has a smaller diameter than the bore 3, and the channel 4 and the bore 3 are centered relative to each other.
25 Åbningerne 4 og 3 kan endog være kraftigere decentrerede, forudsat at det smeltede polybutylenterephthalat kan strømme normalt langs en del af boringen 3's væg, især ved hjælp af skråkanten ved indløbet til boringen.The openings 4 and 3 may even be more strongly centered, provided that the molten polybutylene terephthalate can flow normally along part of the wall of bore 3, in particular by means of the inclined edge at the inlet to the bore.
Jo større decentreringen er, desto større dimensioner 30 har skråkanten fortrinsvis.The larger the centering, the larger the dimensions 30 preferably have the inclined edge.
Åbningerne i mundstykket kan have et tværsnit af forskellige velkendte former, f.eks. rundt, aflangt eller til og med flerfliget tværsnit.The openings in the nozzle may have a cross section of various well-known shapes, e.g. round, oblong or even multilangular cross-section.
Det har vist sig, at der ved fremgangsmåden 35 ifølge opfindelsen fås særligt gode resultater ved anvendelse af åbninger med rundt tværsnit. I dette tilfældeIt has been found that in the method 35 according to the invention, particularly good results are obtained by using apertures of round cross-section. In this case
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6 149869 er diameteren sædvanligvis mellem 0,20 og 0,90 mm, og antallet af åbninger er ikke begrænset. Det er muligt at tilvejebringe mange forskellige finheder ved meget forskellige hastigheder, f.eks. mellem 200 og 4000 5 m/min. eller højere. De fremstillede filamenter strækkes på sædvanlig måde ifølge en hvilken som helst kendt metode, kontinuerligt eller diskontinuerligt, hvorved strækningsgraderne sædvanligvis er mellem 1,2 og 5 gange. Strækningshastigheden kan variere stærkt, f.eks.The diameter is usually between 0.20 and 0.90 mm and the number of openings is not limited. It is possible to provide many different features at very different speeds, e.g. between 200 and 4000 5 m / min. or higher. The filaments made are stretched in the usual manner according to any known method, continuously or discontinuously, with the degree of stretching usually being between 1.2 and 5 times. The stretching speed can vary greatly, e.g.
10 mellem 500 og 4000 m/min.10 between 500 and 4000 m / min.
Efter fremkaldning af krusningen uden spænding på kendt måde, f.eks. ved hjælp af vanddamp eller varm luft, . udviser den fremstillede filament en spiralformet krusning, . der er karakteristisk for filamenter bestående af to bestanddele.After developing the ripple without tension in a known manner, e.g. using steam or hot air,. the filament produced exhibits a helical ripple,. which is characteristic of two-component filaments.
15 Filamentets krusnings egenskaber er udmærkede set fra alle syns punkter, især krusningsfrekvensen, halvafkrusningskraften, halvgenkrusningskraften og elasticitetsmodulet.The properties of the filament ripple are excellent from all points of view, especially the ripple frequency, half-crushing force, half-crushing force, and modulus of elasticity.
I de følgende udførelseseksempler bestemmes de forskellige egenskaber på følgende måde.In the following embodiments, the various properties are determined as follows.
20 Polymerens viskositet (P) i smeltet tilstand be stemmes i et Davenport ekstrusionsplastometer.The molten state viscosity (P) of the polymer is determined in a Davenport extrusion plastometer.
Strækbarheden E defineres på følgende måde: E (%) = -Α-~—L, x loo 25 1 hvor L er filamentets længde efter afkrusning med en spænding på 250 mp/dtex, og 1 er det. krusede filaments længde uden spænding.The extensibility E is defined as follows: E (%) = -Α- ~ —L, x loo 25 1 where L is the length of the filament after crushing with a voltage of 250 mp / dtex and 1 is it. rippled filament length without tension.
Krusningsfrekvensen er antallet af halvkrusninger 30 pr. cm afkruset filament.The ripple frequency is the number of half ripples 30 per cm crumpled filament.
Ud fra kraft-stræknings-diagrammet for intervallet 1 - L kan man på ordinaten aflæse halvafkrusningskraften og halvgenkrusningskraften ved E/2% på abscissen.From the force-stretch diagram for the interval 1 - L, the half-crushing force and the half-crushing force can be read on the ordinate at E / 2% on the abscissa.
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Eksempel 1-6Examples 1-6
Der fremstilles fire forskellige polymere.Four different polymers are prepared.
(A) Polyethylenterephthalat med et logaritmisk viskositetstal på 0,66 dl/g (målt ved 25°C i et ortho- 5 chlorphenolopløsning indeholdende 1 g polymer pr.(A) Polyethylene terephthalate with a logarithmic viscosity number of 0.66 dl / g (measured at 25 ° C in an orthochlorophenol solution containing 1 g polymer per
100 ml opløsning) og med en viskositet i smeltet tilstand ved 290°C på 2300 P.100 ml solution) and with a molten state viscosity at 290 ° C at 2300 P.
(B) Polybutylenterephthalat tværbundet med 0,3 mol-% trimethylolpropan, henført til antallet af 10 terephthaiatenheder. Viskositet i smeltet tilstand ved 260°C: 4000 P.(B) Polybutylene terephthalate crosslinked with 0.3 mole% trimethylol propane, attributed to the number of 10 terephthaiate units. Melted viscosity at 260 ° C: 4000 P.
(C) Polybutylenterephthalat tværbundet med 0,3 mol-% trimethylolpropan. Viskositet i smeltet tilstand ved 260°C: 8000 P.(C) Polybutylene terephthalate crosslinked with 0.3 mole% trimethylol propane. Melted viscosity at 260 ° C: 8000 P.
15 (D) Polybutylenterephthalat tværbundet med 0,3 mol-% trimethylolpropan. Viskositet i smeltet tilstand ved 260°C: 10000 P.(D) Polybutylene terephthalate crosslinked with 0.3 mole% trimethylol propane. Melted viscosity at 260 ° C: 10000 P.
Polymererne smeltes hver for sig, polymer A ved 280°C og polymerene B, C og D ved 245°C. Man spinder 20 derefter polymerparrene A-B, A-C og A-D i volumenforholdet 50:50 ved 275°C ved hjælp af en sådan anordning, som vises i fig. 3, hvorved kanalerne 4 har en diameter på 1,5 mm, boringen 3 har en diameter på 2,5 mm, kanalerne 6 og 7 har en diameter på 2,5 mm, afstanden mellem 25 kanalernes 4 akser og boringens 3 akser er 1 mm, og længden af skråkanten 2 er 0,75 mm. Dysepladen har 32 runde åbninger med en diameter på 0,50 mm. Polymer A ledes gennem kanalerne 6 og 7, og polymer B, C eller D ledes gennem kanalen 4.The polymers are melted separately, polymer A at 280 ° C and polymers B, C and D at 245 ° C. The polymer pairs A-B, A-C and A-D are then spun in the 50:50 volume ratio at 275 ° C by means of such a device as shown in FIG. 3, whereby the channels 4 have a diameter of 1.5 mm, the bore 3 has a diameter of 2.5 mm, the channels 6 and 7 have a diameter of 2.5 mm, the distance between the 25 axes of the 4 channels and the axes of the bore 3 is 1 mm and the length of the incline 2 is 0.75 mm. The die plate has 32 round openings with a diameter of 0.50 mm. Polymer A is passed through channels 6 and 7 and polymer B, C or D is passed through channel 4.
30 De fremkomne filamenter ledes over fødevalser med en hastighed på 550 m/min., hvilke valser holdes ved en temperatur på 90°C. Filamenterne ledes derefter over strækningsvalser med en hastighed på 2190 m/min., hvorved de strækkes ca. 4 gange, hvorpå de vindes op med 35 en hastighed på 2000 m/min. Filamenterne behandles derpå i afspændt tilstand i vanddamp (tryk 10 bar) ved en temperatur på 160°C.The resulting filaments are passed over food rolls at a speed of 550 m / min, which rolls are kept at a temperature of 90 ° C. The filaments are then passed over stretching rollers at a speed of 2190 m / min, stretching approx. 4 times, then winds up at a speed of 2000 m / min. The filaments are then treated in a relaxed state in water vapor (pressure 10 bar) at a temperature of 160 ° C.
149869 8149869 8
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De fremstillede filamenters egenskaber er angivet i nedenstående tabel (eksempel 1-3 ifølge opfindelsen).The properties of the filaments made are given in the following table (Examples 1-3 of the invention).
I sammenligningseksemplerne 4-6 spindes de samme tre polymerpar, dvs. A-B, A-C og A-D, på samme måde som 5 ovenfor, men under anvendelse af en anordning ifølge USA-patentskrift nr. 2.386.173. Denne anordning har en dyseplade forsynet med 32 runde åbninger med en diameter på 0,34 mm. De fremstillede filamenters egenskaber efter afspænding i vanddamp er angivet i nedenstående tabel.In Comparative Examples 4-6, the same three polymer pairs are spun, i.e. A-B, A-C and A-D, in the same manner as above, but using a device according to United States Patent No. 2,386,173. This device has a nozzle plate provided with 32 round openings with a diameter of 0.34 mm. The properties of the filaments produced after relaxing in water vapor are given in the table below.
1010
Eksempler iflg. opf. Sammenligningseksernpler 1 2 3 4 5 6 15 !Examples according to opf. Comparison Examples 1 2 3 4 5 6 15!
Polymerpar A-B A-C A-D A-B A-C A-DPolymer pairs A-B A-C A-D A-B A-C A-D
Krusningsfrekvens 16,3 20,3 26,3 14,9 15,7 19,1Ripple frequency 16.3 20.3 26.3 14.9 15.7 19.1
Strækbarhed E, % 7 10,7 22,5 12,3 15,6 27,9 20 Halvafkrusningskraft 141 214 310 68,5 86,3 122 p/texExtensibility E,% 7 10.7 22.5 12.3 15.6 27.9 20 Half-crush force 141 214 310 68.5 86.3 122 p / tex
Halvgenkrusnings- 104 158 185 51,7 60,9 70 kraft p/texSemi-ripple 104 158 185 51.7 60.9 70 power p / tex
Elasticitetsmodul, 168 207 212 162 184 185 p/tex 25Elastic modulus, 168 207 212 162 184 185 p / tex 25
Krympning i kogende 8,8 7,1 7,0 8,7 7,3 7,2 vand, % 30Shrinkage in boiling 8.8 7.1 7.0 8.7 7.3 7.2 water,% 30
Af forsøgsresultaterne fremgår det, at bikomponentfi-lamenterne ifølge opfindelsen udviser bedre krusningsfrekvens og fremfor alt bedre halvafkrusnings-r og halvgenkrusnings-kraft, hvilket viser, at de har en mere stabil krusning end 35 sammenligningsfilamenterne.From the test results, it can be seen that the bicomponent filaments of the invention exhibit better ripple frequency and, above all, better half-ripple and half-ripple force, showing that they have a more stable ripple than the comparative filaments.
Claims (4)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7605791A FR2342359A1 (en) | 1976-02-27 | 1976-02-27 | IMPROVED CRIMP POLYESTERS "BILAMES" YARNS |
| FR7605791 | 1976-02-27 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DK83777A DK83777A (en) | 1977-08-28 |
| DK149869B true DK149869B (en) | 1986-10-13 |
| DK149869C DK149869C (en) | 1987-06-29 |
Family
ID=9169810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK83777A DK149869C (en) | 1976-02-27 | 1977-02-25 | BICOMPONENT FILAMENTS BASED ON POLYETHYLENTE REPHTHALATE AND CIRCULAR POLYBUTYLENTE REPHTHALATE AND PROCEDURE FOR THEIR PREPARATION |
Country Status (14)
| Country | Link |
|---|---|
| JP (1) | JPS6055602B2 (en) |
| AR (1) | AR209878A1 (en) |
| BE (1) | BE851862A (en) |
| BR (1) | BR7701126A (en) |
| CA (1) | CA1060617A (en) |
| CH (1) | CH620251A5 (en) |
| DE (1) | DE2708238A1 (en) |
| DK (1) | DK149869C (en) |
| ES (1) | ES456230A1 (en) |
| FR (1) | FR2342359A1 (en) |
| IT (1) | IT1074550B (en) |
| LU (1) | LU76846A1 (en) |
| NL (1) | NL187125C (en) |
| SE (1) | SE424881B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2546537B1 (en) * | 1983-05-25 | 1985-08-16 | Rhone Poulenc Fibre | SEALING MEMBRANE AND ITS MANUFACTURING METHOD |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1599387A (en) * | 1967-12-21 | 1970-07-15 | ||
| FR2182766B1 (en) * | 1972-05-04 | 1974-07-26 | Rhone Poulenc Textile |
-
1976
- 1976-02-27 FR FR7605791A patent/FR2342359A1/en active Granted
-
1977
- 1977-02-21 NL NL7701840A patent/NL187125C/en not_active IP Right Cessation
- 1977-02-24 JP JP1876577A patent/JPS6055602B2/en not_active Expired
- 1977-02-24 ES ES456230A patent/ES456230A1/en not_active Expired
- 1977-02-24 BR BR7701126A patent/BR7701126A/en unknown
- 1977-02-25 DE DE19772708238 patent/DE2708238A1/en not_active Ceased
- 1977-02-25 SE SE7702128A patent/SE424881B/en not_active IP Right Cessation
- 1977-02-25 AR AR26668277A patent/AR209878A1/en active
- 1977-02-25 CA CA272,743A patent/CA1060617A/en not_active Expired
- 1977-02-25 CH CH240377A patent/CH620251A5/en not_active IP Right Cessation
- 1977-02-25 BE BE175292A patent/BE851862A/en not_active IP Right Cessation
- 1977-02-25 DK DK83777A patent/DK149869C/en not_active IP Right Cessation
- 1977-02-25 LU LU76846A patent/LU76846A1/xx unknown
- 1977-02-25 IT IT2072077A patent/IT1074550B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| BR7701126A (en) | 1977-10-18 |
| AR209878A1 (en) | 1977-05-31 |
| NL187125B (en) | 1991-01-02 |
| JPS6055602B2 (en) | 1985-12-05 |
| LU76846A1 (en) | 1977-07-07 |
| DK83777A (en) | 1977-08-28 |
| CH620251A5 (en) | 1980-11-14 |
| FR2342359A1 (en) | 1977-09-23 |
| IT1074550B (en) | 1985-04-20 |
| FR2342359B1 (en) | 1979-09-21 |
| SE424881B (en) | 1982-08-16 |
| JPS52107322A (en) | 1977-09-08 |
| DE2708238A1 (en) | 1977-10-27 |
| ES456230A1 (en) | 1978-01-16 |
| CA1060617A (en) | 1979-08-21 |
| DK149869C (en) | 1987-06-29 |
| NL187125C (en) | 1991-06-03 |
| SE7702128L (en) | 1977-08-28 |
| NL7701840A (en) | 1977-08-30 |
| BE851862A (en) | 1977-08-25 |
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| PBP | Patent lapsed |