NO139645B - PROCEDURE FOR TREATING A NEEDLE FELT WHICH COMPLETES IN WHOLE OR IN PART OF THERMOPLASTIC FIBERS - Google Patents
PROCEDURE FOR TREATING A NEEDLE FELT WHICH COMPLETES IN WHOLE OR IN PART OF THERMOPLASTIC FIBERS Download PDFInfo
- Publication number
- NO139645B NO139645B NO743970A NO743970A NO139645B NO 139645 B NO139645 B NO 139645B NO 743970 A NO743970 A NO 743970A NO 743970 A NO743970 A NO 743970A NO 139645 B NO139645 B NO 139645B
- Authority
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- Norway
- Prior art keywords
- felt
- fibers
- wadding
- felt according
- completes
- Prior art date
Links
- 239000000835 fiber Substances 0.000 title claims description 19
- 238000000034 method Methods 0.000 title description 5
- 229920001169 thermoplastic Polymers 0.000 title 1
- 239000004416 thermosoftening plastic Substances 0.000 title 1
- 239000004744 fabric Substances 0.000 claims description 15
- 229920002994 synthetic fiber Polymers 0.000 claims description 9
- 239000004952 Polyamide Substances 0.000 claims description 7
- 229920002647 polyamide Polymers 0.000 claims description 7
- 239000012209 synthetic fiber Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- 210000002268 wool Anatomy 0.000 claims description 5
- 239000000853 adhesive Substances 0.000 claims description 4
- 230000001070 adhesive effect Effects 0.000 claims description 4
- 229920000728 polyester Polymers 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 239000004033 plastic Substances 0.000 claims description 2
- 229920003023 plastic Polymers 0.000 claims description 2
- 239000011347 resin Substances 0.000 claims 1
- 229920005989 resin Polymers 0.000 claims 1
- 239000010410 layer Substances 0.000 description 14
- 238000001035 drying Methods 0.000 description 8
- 229920001131 Pulp (paper) Polymers 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- OEPOKWHJYJXUGD-UHFFFAOYSA-N 2-(3-phenylmethoxyphenyl)-1,3-thiazole-4-carbaldehyde Chemical compound O=CC1=CSC(C=2C=C(OCC=3C=CC=CC=3)C=CC=2)=N1 OEPOKWHJYJXUGD-UHFFFAOYSA-N 0.000 description 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 239000004640 Melamine resin Substances 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
- D04H1/44—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling
- D04H1/46—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
- D04H1/48—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres in combination with at least one other method of consolidation
- D04H1/485—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres in combination with at least one other method of consolidation in combination with weld-bonding
-
- 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
- D04H1/44—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling
- D04H1/46—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
- D04H1/48—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres in combination with at least one other method of consolidation
-
- 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
- D04H1/44—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling
- D04H1/46—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
- D04H1/48—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres in combination with at least one other method of consolidation
- D04H1/482—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres in combination with at least one other method of consolidation in combination with shrinkage
-
- 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
- D04H1/55—Polyesters
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Nonwoven Fabrics (AREA)
Description
Filt for papirmaskiner og lignende. Felt for paper machines and the like.
Filter som anvendes i papirindustrien blir som kjent inndelt i våtfilter og torkefilter. Våtfiltene er slike som tjener som filtermateriale og bærer for det våte og relativt svake papir-(masse-)ark gjennom pressene, mens torkefilten har som oppgave å oke kontakttrykket mellom papir og torkesylinder i maskinens torke-parti. Filters used in the paper industry are, as is known, divided into wet filters and dry filters. The wet felts are those that serve as filter material and carry the wet and relatively weak paper (pulp) sheet through the presses, while the drying felt has the task of increasing the contact pressure between paper and drying cylinder in the drying part of the machine.
Våtfiltenes virkemåte er vel etter moderne oppfatning vesentlig forskjellig i begynnelsen og slutten av maskinens presse-parti. I begynnelsen av pressepartiet er arket ennu ganske vått og der er betydelige vannmengder som overfores fra papir-(masse-)banen til filten og som skal fjernes fra filten. Det er særlig på disse steder onskelig at filtene er hva man kaller åpne, dvs<*>, ikke byr for stor motstand mot vanntransporten gjennom filten hhv. langs filten. According to modern opinion, the way the wet felts work is significantly different at the beginning and end of the machine's pressing part. At the beginning of the press section, the sheet is still quite wet and there are significant amounts of water which are transferred from the paper (pulp) web to the felt and which must be removed from the felt. It is particularly desirable in these places that the felts are what is called open, i.e.<*>, do not offer too much resistance to the transport of water through the felt or along the felt.
Torkefiltens funksjon er, som tidligere nevnt, å oke kontakttrykket og dermed varmeoverforingen mellom torkesylinder og papir-(masse-)banen. Imidlertid stilles der også andre krav til en torke- The function of the drying felt is, as previously mentioned, to increase the contact pressure and thus the heat transfer between the drying cylinder and the paper (pulp) web. However, there are also other requirements for a drying
filt, nemlig at den skal muliggjore borttransport av damp og vann fra papirbanen samt at den skal medvirke til at torkeforlopet skjer så okonomisk som mulig. Ifolge undersøkelser som er utfort i Sverige, er det, i det minste under bestemte forutsetninger, en fordel om filten er åpen. felt, namely that it should enable steam and water to be transported away from the paper web and that it should contribute to the drying process being as economical as possible. According to research carried out in Sweden, there is, at least under certain conditions, an advantage if the blanket is open.
Ved konvensjonell fremstilling av våtfilt for papirmaskiner In the conventional production of wet felt for paper machines
og lignende, dvs. filt av i hovedsaken ull som veves og siden valkes and the like, i.e. mainly felt from wool that is woven and then carded
til en mer eller mindre fUtlignende struktur, kommer kravet om åpenhet alltid til å kollidere med kravet om markeringsfrihet, dvs. en jevn overflate som ikke etterlater for tydelige avtrykk på papirbanen, samt om styrke og stabilitet. Ved anvendelse av en mindre del syntetiske fibre i blandingen kan man delvis tilfredsstille kravet om styrke, men da en andel syntetiske fibre nedsetter valkingsevnen, kan man ikke oke innholdet av syntetiske fibre over et visst nivå, forskjellig for forskjellige filttyper. Den lenge kjente teknikk med gjennomstikning av et vattlag til en grunnvev gir en mulighet for å fremstille en filt-lignende struktur uten at varen valkes. Man kan med denne teknikk fremstille filt med et overflatelag av syntetiske fibre som tilfreds-stiller i hvert fall de fleste krav til markeringsfrihet, samtidig som filten gjores sterk og stabil. Selv kravet til god åpenhet til-fredsstilles i stor utstrekning. to a more or less foot-like structure, the requirement for transparency always comes into conflict with the requirement for freedom of marking, i.e. a smooth surface that does not leave too obvious imprints on the paper web, as well as for strength and stability. By using a smaller proportion of synthetic fibers in the mixture, the requirement for strength can be partially satisfied, but as a proportion of synthetic fibers reduces the wicking ability, the content of synthetic fibers cannot be increased above a certain level, which differs for different felt types. The long-known technique of piercing a wadding layer into a ground fabric provides an opportunity to produce a felt-like structure without the product being warped. With this technique, felt can be produced with a surface layer of synthetic fibers that satisfies at least most requirements for freedom from marking, while also making the felt strong and stable. Even the requirement for good transparency is largely relaxed.
Man kan imidlertid med de utforelser som hittil er kjent One can, however, with the embodiments that are known up to now
ikke oke åpenheten i så hby grad som det i visse tilfelle kunne være onskelig uten skadelig virkning enten av markeringen eller av styrken og stabiliteten. do not increase the transparency as much as in certain cases might be desirable without detrimental effect either to the marking or to the strength and stability.
på samme måte gjelder for torkefilt som normalt fremstilles the same applies to drying felts that are normally produced
av ull, bomull eller syntetiske fibre, at åpenheten ved normal utfo- of wool, cotton or synthetic fibres, that the transparency in normal
relse begrenses av kravet til styrke og stabilitet. safety is limited by the requirement for strength and stability.
Foreliggende oppfinnelse har til formål å skaffe en filt, The object of the present invention is to provide a felt,
hvis åpenhet er ualminnelig stor samtidig som dens styrke, stabilitet og markeringsfrihet er normal eller bedre enn for kjente filter. Denne • filt består av en grunnvev med på sidene ved en stikningsoperasjon anbragte vattlag. Oppfinnelsen utmerker seg ved at grunnveven er vevet av plastmonofilamenter. En vevning av momofilamenter kan fremstilles meget glissen, men allikevel på grunn av momofilamentenes stivhet være whose openness is unusually large at the same time that its strength, stability and freedom of marking are normal or better than for known filters. This • felt consists of a base fabric with wadding layers placed on the sides by a stitching operation. The invention is distinguished by the fact that the ground fabric is woven from plastic monofilaments. A weave of momofilaments can be made very slippery, but still because of the stiffness of the momofilaments
tilfredsstillende formstabil. Mest fordelaktig er monofilamenter av polyamidtypen og på dens to sider anbringes vattlag som festes til grunnveven ved en stikningsoperasjon. satisfactorily dimensionally stable. The most advantageous are monofilaments of the polyamide type and on its two sides a wadding layer is placed which is attached to the ground tissue by a stitching operation.
Fortrinnsvis anvendes som grunnvev en vev av polyamid-monofilamenter med 8-10 tråder pr. cm. Monofilamentets diameter i en slik vev er passende 0,45 - 0,50 mm. Dette valg av tetthet er i hovedsaken basert på fremstillingstekniske grunner og er ikke vesentlig for oppfinnelsen, som tillater meget store variasjoner av dukens egenskaper. Preferably, a weave of polyamide monofilaments with 8-10 threads per cm. The diameter of the monofilament in such a weave is suitably 0.45 - 0.50 mm. This choice of density is mainly based on manufacturing technical reasons and is not essential for the invention, which allows very large variations of the fabric's properties.
Vattlagene består fortrinnsvis av syntetiske fibre, men kan også være blandinger av ull og syntetiske fibre. Særlig passende er syntetiske fibre av polyamid-, polyester- og polyakryltypen. The batting layers preferably consist of synthetic fibres, but can also be mixtures of wool and synthetic fibres. Synthetic fibers of the polyamide, polyester and polyacrylic type are particularly suitable.
En spesiell fordel fås hvis man anvender vatt som inneholder fibre med lavere klebetemperatur enn hovedmassen fordi disse fibre etter stikningsoperasjonen ved oppvarming under trykk kan brin-ges til delvis å smelte og binde sammen fibrene i vattlaget. A special advantage is obtained if wadding containing fibers with a lower adhesive temperature than the main mass is used, because after the stitching operation these fibers can be caused by heating under pressure to partially melt and bind together the fibers in the wadding layer.
Tegningen viser skjematisk et eksempel på en filt ifolge oppfinnelsen. Fig. 1 viser filten i perspektiv og fig. 2 et tverrsnitt gjennom samme. The drawing schematically shows an example of a felt according to the invention. Fig. 1 shows the felt in perspective and fig. 2 a cross section through the same.
Den i perspektiv på fig. 1 viste filt kan tenkes fremstilt med grunnvev 1 av monofilament, såsom polyamidfilamenter. Grunnveven 1 er lagt åpen på figurens venstre side, på midtpartiet er den ene sides vattlag 2 delvis stukket ned gjennom grunnveven 1 og på fig. 2 er den motsatte sides vattlag 3 stukket inn i de ovrige lag. Stikningsmaskinen kan hensiktsmessig være utstyrt med spesielle nåler som ikke i alvorlig grad skader grunnveven 1. The perspective of fig. The felt shown in 1 can be thought of as being produced with a base fabric 1 of monofilament, such as polyamide filaments. The ground fabric 1 is laid open on the left side of the figure, in the middle part the wadding layer 2 on one side is partially pushed down through the ground fabric 1 and in fig. 2, the opposite side's wadding layer 3 is inserted into the other layers. The stitching machine can suitably be equipped with special needles that do not seriously damage the underlying tissue 1.
Gjennomstikningsoperasjonen kan foregå på forskjellige måter avhengig av maskintypen. Med en enkeltvirkende stikningsmaskin går man slik frem at man på grunnveven 1 legger et vattlag 2, hvis fibre ved hjelp av nåleoperasjon delvis fores ned i og gjennom grunnveven 1, hvoretter filten vendes og et vattlag 3 anbringes på grunnvevens annen side (fig. 2). Fibrene i dette vattlag 3 fores på samme måte delvis ned i og gjennom de ovrige lag. The piercing operation can take place in different ways depending on the type of machine. With a single-action stitching machine, one proceeds in such a way that a wadding layer 2 is placed on the base fabric 1, the fibers of which are partly fed down into and through the base fabric 1 by means of a needle operation, after which the felt is turned over and a wadding layer 3 is placed on the other side of the base fabric (fig. 2) . The fibers in this wadding layer 3 are lined in the same way partly down into and through the other layers.
Der finnes også såkalte dobbeltvirkende maskiner, på hvilke man samtidig kan utfore stikning fra grunnvevens 1 begge sider. På en viss type av slike maskiner er det mulig samtidig å belegge grunnvevens 1 to sider med vatt og ved stikning feste dem til grunnveven 1 på samme måte som angitt ovenfor. There are also so-called double-acting machines, on which stitching can be carried out from both sides of the base fabric 1 at the same time. On a certain type of such machine, it is possible to simultaneously coat two sides of the ground fabric 1 with wadding and, by stitching, attach them to the ground fabric 1 in the same way as indicated above.
Uansett hvilken maskintype man anvender, kan det være hensiktsmessig og i visse tilfelle nodvendig å la filten passere et antall ganger gjennom stikningsmaskinen uten å tilfore ny vatt. En slik fremgangsmåte har nemlig til folge at vatten festes bedre og der blir mindre fare for at fibrene skal losne. En ytterligere for- Regardless of which type of machine is used, it may be appropriate and in some cases necessary to let the felt pass through the stitching machine a number of times without adding new wadding. Such a method has the result that the water adheres better and there is less risk of the fibers coming loose. A further for-
sterkning av fibrenes binding kan bevirkes ved folgende kjente metoder: strengthening of the fibres' bond can be effected by the following known methods:
a) Vattlaget består helt eller delvis av fibre med en latent krympe- a) The batting layer consists wholly or partly of fibers with a latent shrink-
evne som ut loses av en varmebehandling. Graden av sammenbinding ability that is released by a heat treatment. The degree of interconnection
kan varieres enten ved blanding av krympbare eller ikke krympbare can be varied either by mixing shrinkable or non-shrinkable
fibre eller ved valg av fibre med forskjellig krympbarhet. fibers or by choosing fibers with different shrinkability.
b) Vattlaget består av en blanding av fibre med forskjellig klebetemperatur. Ved innblanding av 5 - 15 % av en fiber med relativt b) The batting layer consists of a mixture of fibers with different adhesive temperatures. By mixing 5 - 15% of a fiber with relatively
lav klebetemperatur, såsom fibre av polyvinylklorid, sampolymerer av vinylklorid med vinylidenklorid, vinylacetat eller akrylnitril low adhesive temperature, such as fibers of polyvinyl chloride, copolymers of vinyl chloride with vinylidene chloride, vinyl acetate or acrylonitrile
eller fibre av en annen art som er fremstilt spesielt for formålet, or fibers of another kind which have been specially prepared for the purpose,
i en vatt av f.eks. polyamid- eller polyesterfibre, kan man frem- in a wad of e.g. polyamide or polyester fibres, it is possible to produce
stille en fiberblanding, hvor fibrene etter en varmebehandling still a fiber mixture, where the fibers after a heat treatment
under trykk delvis sammenbindes ved "sveising". under pressure are partially joined by "welding".
c) Ved impregnering av filten med en herdbar eller selvherdende har- c) When impregnating the felt with a hardenable or self-hardening har-
piks. Som eksempel kan anfbres melaminharpiks, f.eks. 20 % i vann-opplosning, og epoxyharpiks, f.eks. 5 - 10 % i et organisk opplos-ningsmiddel. pix. Melamine resin can be used as an example, e.g. 20% in water solution, and epoxy resin, e.g. 5 - 10% in an organic solvent.
Passende vattvekt er 100 - 500 g/m 2 på o hver side av grunn- Suitable wadding weight is 100 - 500 g/m 2 on o each side of the base
veven. I vattlaget kan der inngå ullfibre. the tissue. Wool fibers may be included in the wadding.
Claims (7)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI3505/73A FI53464C (en) | 1973-11-13 | 1973-11-13 | FRAMEWORK FOR FRAMSTAELLNING AV EN OVAEVD FIBERMATERIALBANA |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| NO743970L NO743970L (en) | 1975-06-09 |
| NO139645B true NO139645B (en) | 1979-01-08 |
| NO139645C NO139645C (en) | 1979-04-25 |
Family
ID=8508514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO743970A NO139645C (en) | 1973-11-13 | 1974-11-05 | PROCEDURE FOR TREATING A NEEDLE FELT WHICH COMPLETES IN WHOLE OR IN PART OF THERMOPLASTIC FIBERS |
Country Status (16)
| Country | Link |
|---|---|
| JP (1) | JPS5218305B2 (en) |
| AT (1) | AT342880B (en) |
| BE (1) | BE822093A (en) |
| CA (1) | CA1012744A (en) |
| CH (2) | CH586774B5 (en) |
| CS (1) | CS190452B2 (en) |
| DD (1) | DD116274A5 (en) |
| DE (1) | DE2453626C3 (en) |
| DK (1) | DK140506B (en) |
| FI (1) | FI53464C (en) |
| FR (1) | FR2250846B1 (en) |
| GB (1) | GB1482675A (en) |
| IT (1) | IT1033609B (en) |
| NL (1) | NL7414347A (en) |
| NO (1) | NO139645C (en) |
| SE (1) | SE413415B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2999079B2 (en) * | 1992-10-30 | 2000-01-17 | 松下電工株式会社 | Deburring device |
| FR2723525B1 (en) | 1994-08-12 | 1996-10-31 | Elysees Balzac Financiere | BODY OF ALVEOLAR MATERIAL, COMBINATION OF CLEANING AND / OR SCOURING, PROCESSES FOR THEIR PREPARATION |
-
1973
- 1973-11-13 FI FI3505/73A patent/FI53464C/en active
-
1974
- 1974-10-22 SE SE7413271A patent/SE413415B/en not_active IP Right Cessation
- 1974-10-30 CH CH1451674A patent/CH586774B5/xx not_active IP Right Cessation
- 1974-10-30 CH CH1451674D patent/CH1451674A4/xx unknown
- 1974-11-04 NL NL7414347A patent/NL7414347A/en unknown
- 1974-11-05 NO NO743970A patent/NO139645C/en unknown
- 1974-11-11 CS CS747662A patent/CS190452B2/en unknown
- 1974-11-12 BE BE7000579A patent/BE822093A/en not_active IP Right Cessation
- 1974-11-12 CA CA213,428A patent/CA1012744A/en not_active Expired
- 1974-11-12 JP JP49129624A patent/JPS5218305B2/ja not_active Expired
- 1974-11-12 DD DD182318A patent/DD116274A5/xx unknown
- 1974-11-12 DE DE2453626A patent/DE2453626C3/en not_active Expired
- 1974-11-13 AT AT907074A patent/AT342880B/en not_active IP Right Cessation
- 1974-11-13 IT IT83426/74A patent/IT1033609B/en active
- 1974-11-13 GB GB49179/74A patent/GB1482675A/en not_active Expired
- 1974-11-13 FR FR7437477A patent/FR2250846B1/fr not_active Expired
- 1974-11-13 DK DK591074AA patent/DK140506B/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| FR2250846A1 (en) | 1975-06-06 |
| DK591074A (en) | 1975-07-07 |
| CS190452B2 (en) | 1979-05-31 |
| DK140506C (en) | 1980-02-11 |
| DE2453626C3 (en) | 1978-04-27 |
| CH1451674A4 (en) | 1976-10-29 |
| DE2453626B2 (en) | 1977-09-01 |
| BE822093A (en) | 1975-05-12 |
| NL7414347A (en) | 1975-05-15 |
| FR2250846B1 (en) | 1980-03-07 |
| SE7413271L (en) | 1975-05-14 |
| DE2453626A1 (en) | 1975-05-15 |
| AT342880B (en) | 1978-04-25 |
| NO139645C (en) | 1979-04-25 |
| JPS5077667A (en) | 1975-06-25 |
| CH586774B5 (en) | 1977-04-15 |
| NO743970L (en) | 1975-06-09 |
| FI53464C (en) | 1978-05-10 |
| JPS5218305B2 (en) | 1977-05-20 |
| DK140506B (en) | 1979-09-17 |
| CA1012744A (en) | 1977-06-28 |
| DD116274A5 (en) | 1975-11-12 |
| FI53464B (en) | 1978-01-31 |
| ATA907074A (en) | 1977-08-15 |
| GB1482675A (en) | 1977-08-10 |
| FI350573A (en) | 1975-05-14 |
| IT1033609B (en) | 1979-08-10 |
| SE413415B (en) | 1980-05-27 |
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