SE429315B - DEVICE FOR EXTRUDING A THERMOPLAST EXISTING MULTILAYER WRAP - Google Patents

DEVICE FOR EXTRUDING A THERMOPLAST EXISTING MULTILAYER WRAP

Info

Publication number
SE429315B
SE429315B SE8105700A SE8105700A SE429315B SE 429315 B SE429315 B SE 429315B SE 8105700 A SE8105700 A SE 8105700A SE 8105700 A SE8105700 A SE 8105700A SE 429315 B SE429315 B SE 429315B
Authority
SE
Sweden
Prior art keywords
channel
supply channel
core layer
plastic
cover layer
Prior art date
Application number
SE8105700A
Other languages
Swedish (sv)
Other versions
SE8105700L (en
Inventor
A W Thiel
Original Assignee
Bellaplast Gmbh
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
Application filed by Bellaplast Gmbh filed Critical Bellaplast Gmbh
Publication of SE8105700L publication Critical patent/SE8105700L/en
Publication of SE429315B publication Critical patent/SE429315B/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/305—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets
    • B29C48/307—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets specially adapted for bringing together components, e.g. melts within the die
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B29C48/21—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/304—Extrusion nozzles or dies specially adapted for bringing together components, e.g. melts within the die
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/06—Rod-shaped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Laminated Bodies (AREA)

Description

l5 81 ÛSTÜÛ-Z formig förankring i bärarskiktet, men icke bildningen av från var- andra åtskilda remsor på flerskiktsbanan; Slutligen är det känt att framställa tvåfärgiga strängar av plast medelst strängpressningsförfarandet genom sektorsprutning (tyska nytto- > modellansökan l9 34 336). Denna sektorsprutning sker emellertid på en i förväg framställd fast kärna, exempelvis en elektrisk ledare, och sprutningen är icke kopplad till någon i förväg företagen fonnning av den genom sektorsprutning uppbyggda strängen för bildning av en fler- skiktsfolie. 3 Till grund för uppfinningen ligger uppgiften-att åstadkomma en anordning för strängpressning av en av termoplaster bestående flerskiktsfolie med Vett kärnskikt och ett remsformigt täckskikt, där anordningen gör det möjligt att åstadkomma en billig framställning av en sådan flerskikts- folie avsedd för breda användningsområden, i synnerhet då de olika skikten i flerskiktsfolien består av plaster med huvudsakligen samma eller liknande kemisk sammansättning och i huvudsak skiljer sig från var- andra genom sina tillsatser av mjukgörare, färgämnen eller liknande. l5 81 ÛSTÜÛ-Z shaped anchoring in the carrier layer, but not the formation of strips separated from each other on the multilayer web; Finally, it is known to produce two-color strands of plastic by the extrusion process by sector spraying (German utility> model application 19 34 336). However, this sector spraying takes place on a pre-produced solid core, for example an electrical conductor, and the spraying is not connected to any pre-formed formation of the strand constructed by sector spraying to form a multilayer foil. The object of the invention is to provide a device for extruding a multilayer film consisting of thermoplastics with a white core layer and a strip-shaped cover layer, the device making it possible to provide a cheap production of such a multilayer film intended for wide applications, in in particular when the different layers in the multilayer foil consist of plastics with essentially the same or similar chemical composition and mainly differ from each other by their additives of plasticizers, dyes or the like.

Denna uppgift löses enligt uppfinningen genom att tillförselkanalen för det remsformigt utbildade täckskiktet uppvisar avbrutna partier vid be- gränsade periferiavsnitt.This object is solved according to the invention in that the supply channel for the strip-shaped formed cover layer has interrupted portions at limited peripheral sections.

Medelst denna anordning är det möjligt att på ett billigare och enklare sätt genom samextrudering framställa flerskiktsfolier av termoplaster, vilka uppvisar ett täckskikt med jämna, från varandra avgränsade remsor, som sträcker sig i foliens längdriktning, varvid dessa remsor bildar en jämn yta med de icke täckta områdena av folien. Z För att förankra det remsformigt utbildade täckskiktet i flerskiktsfoliens kärnskikt kan_tillförselkanalen vid sina kantområden i anslutning till de avbrutna partierna uppvisa utvidgningar längs spruthuvudet, varvid ut- vidgningarna är orienterade i sprutriktningen för plasten i kärnskiktet och sträcker sig bakåt. _15 8105700-2 Ett utföringsexempel på anordningen enligt uppfinningen beskrivs närmare i anslutning till två figurer, där fig. l schematiskt visar ett axiellt snitt genom anordningen och fig. 2 visar i förstorad skala ett delsnitt II-II i fig. l.By means of this device it is possible in a cheaper and simpler way by co-extrusion to produce multilayer foils of thermoplastics, which have a cover layer with smooth, spaced-apart strips extending in the longitudinal direction of the foil, these strips forming a smooth surface with the uncovered ones. the areas of the foil. Z In order to anchor the strip-shaped cover layer in the core layer of the multilayer foil, the supply channel at its edge areas adjacent to the interrupted portions may have extensions along the spray head, the extensions being oriented in the spray direction of the plastic in the core layer and extending rearwards. An embodiment of the device according to the invention is described in more detail in connection with two figures, where Fig. 1 schematically shows an axial section through the device and Fig. 2 shows on an enlarged scale a partial section II-II in Fig. 1.

Mellan en sprutmaskin 2 och ett brett spaltmunstycke l är en styrdorn 3 anordnad, i vilken förlöper axiellt en cylindrisk styrkanal 9 för plasten för ett kärnskikt 5. Kring dornen 3 är anordnat en runtomgående ringkanal 6, vilken mynnar vid omkretsen eller periferin av styrkanalen 9 via ett antal tillförselkanaler 7, som är anordnade inom begränsade 'periferiavsnitt och åtskilda från varandra genom avbrutna partier 4.Between a spraying machine 2 and a wide gap nozzle 1 a guide mandrel 3 is arranged, in which extends axially a cylindrical guide channel 9 for the plastic for a core layer 5. Around the mandrel 3 a circumferential annular channel 6 is arranged, which opens at the circumference or periphery of the guide channel 9 via a number of supply channels 7, which are arranged within limited peripheral sections and separated from each other by interrupted portions 4.

Ringkanalen 6 är förbunden med en vid sidan anordnad sprutmaskin 8 för en andra plast för ett täckskikt l0. Den termoplast, som lämnar sprutmaskinen 2 och som förflyttas genom styrdornen 3 i styrkanalen 9, beläggs därigenom remsformigt med den från ringkanalen 6 och tillförsel- kanalerna 7 utträdande plasten, exempelvis glasklar polystyren av standardtyp.The ring channel 6 is connected to a spraying machine 8 arranged next to it for a second plastic for a cover layer 10. The thermoplastic which leaves the spraying machine 2 and which is moved through the guide mandrel 3 in the guide channel 9, is thereby coated in a strip-shaped manner with the plastic emerging from the ring channel 6 and the supply channels 7, for example glass-clear polystyrene of standard type.

Medelst anordningen är det möjligt att anbringa minsta möjliga mängder av glasklar polystyren av standardtyp med förhöjd ytglans på remsformiga periferiavsnitt av kärnskiktet 5. Tjockleksvariationerna kan ligga inom området l:l0, vilket emellertid icke har något som helst ofördelaktigt inflytande pâ den tekniska kvaliteten för den erhållna flerskiktsfolien.By means of the device it is possible to apply the smallest possible amounts of glass-clear polystyrene of standard type with elevated surface gloss to strip-shaped peripheral sections of the core layer 5. The thickness variations can be in the range l: 10, which, however, has no adverse effect on the technical quality of the obtained multilayer foil.

För att tanda remsorna av täckskiktet l0 vid kärnskiktet 5 uppvisar till- förselkanalerna 7 vid de kantomrâden som är belägna intill de avbrutna partierna 4 utvidgningar 7', belägna längs styrdornen 3 (spruthuvudet) och riktade i sprutriktningen för plasten i kärnskiktet 5 och sträckande sig bakåt. De från utvidgningarna 7' kommande förtjockade remsorna för täckskiktet 10 intrycks i plaststrängen för kärnskiktet 5 och bildar därigenom en tandning, genom vilken täckskiktet l0 förankras i kärn- skiktet 5, så att en jämn sidoavslutning av de pålagda remsorna garante- ras, även då dessa utdras sidledes i det breda spaltmunstycket l och de- formeras i huvudsakligen plana ytor vid ovansidan och undersidan av den framställda flerskiktsfolien “81eE15'{ÛG-2 Utöver av ovanstående beskrivning framgår uppfinningen även av efter- föïjande patentkrav.In order to tooth the strips of the cover layer 10 at the core layer 5, the supply channels 7 at the edge areas located adjacent to the interrupted portions 4 have extensions 7 ', located along the guide mandrel 3 (spray head) and directed in the spray direction of the plastic in the core layer 5 and extending rearwardly. . The thickened strips of the cover layer 10 coming from the extensions 7 'are pressed into the plastic string of the core layer 5 and thereby form a toothing, through which the cover layer 10 is anchored in the core layer 5, so that a smooth side end of the applied strips is guaranteed, even when these is extended laterally in the wide gap nozzle 1 and is deformed into substantially flat surfaces at the top and bottom of the produced multilayer film '81eE15' {ÛG-2. In addition to the above description, the invention also appears from the appended claims.

Claims (2)

eiosvoo-2 PATENTKRAVeiosvoo-2 PATENTKRAV 1. Anordning för extrudering av en av termoplaster bestående fler-l skiktsfolie med ett kärnskikt (5) och ett kärnskiktet åtminstone delvis omslutande täckskikt (10), i synnerhet en folie för fort- satt bearbetning genom varmformning, varvid anordningen har en kanal med ett cirkelformigt till elliptiskt tvärsnitt, vilken kanal övergår i ett brett spaltmunstycke (1) och där en tillför- selkanal (9) med cirkulärt till elliptiskt tvärsnitt för plasten i kärnskiktet och en huvudsakligen ringformig tillförselkanal (7) för plasten i täckskiktet mynnar axiellt i kanalen, varvid sistnämnda tillförselkanal bildar sned vinkel med extrusions- riktningen, k ä n n e t e c k n a'd därav, att den ringformade tillförselkanalen (7) för det remsformigt utbildade täckskiktet är sammansatt av ett antal i den ringformade tillförselkanalens (7) omkretsriktning anordnade delkanaler åtskilda av nellanlig- gande väggpartier (4).Device for extruding a multilayer film consisting of thermoplastics with a core layer (5) and a core layer at least partially enclosing cover layer (10), in particular a film for further processing by hot forming, the device having a channel with a circular to elliptical cross-section, which channel merges into a wide gap nozzle (1) and where a supply channel (9) with circular to elliptical cross-section for the plastic in the core layer and a substantially annular supply channel (7) for the plastic in the cover layer opens axially in the channel, wherein the latter supply channel forms an oblique angle with the direction of extrusion, characterized in that the annular supply channel (7) for the strip-shaped cover layer is composed of a number of sub-channels arranged in the circumferential direction of the annular supply channel (7). wall sections (4). 2. Anordning enligt patentkrav 1, k ä n n e t e c k n a d därav, att den ringformade tillförselkanalen (7) i anslutning till väggpartierna (4) uppvisar mot kärnskiktet riktade fördjupningar (7'), varvid fördjupningarna är anordnade i plastens sprutrikt- ning och sträcker sig uppströms från den ringformade tillförsel- kanalens (7) övergång i kanalen med cirkulärt till elliptiskt tvärsnitt.Device according to claim 1, characterized in that the annular supply channel (7) in connection with the wall portions (4) has depressions (7 ') directed towards the core layer, the depressions being arranged in the spray direction of the plastic and extending upstream from the transition of the annular supply channel (7) in the channel with circular to elliptical cross-section.
SE8105700A 1969-09-25 1981-09-28 DEVICE FOR EXTRUDING A THERMOPLAST EXISTING MULTILAYER WRAP SE429315B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1948442A DE1948442C3 (en) 1969-09-25 1969-09-25 Method and device for extruding a composite film made of thermoplastics

Publications (2)

Publication Number Publication Date
SE8105700L SE8105700L (en) 1981-09-28
SE429315B true SE429315B (en) 1983-08-29

Family

ID=5746440

Family Applications (2)

Application Number Title Priority Date Filing Date
SE8105701A SE429316B (en) 1969-09-25 1981-09-28 PROCEDURE AND DEVICE FOR CO-EXTRUSION OF A MULTILAYER COAT WITH A CORE LAYER AND A TEAM LAYER COVERING THAT THAT COAT BEATED BY THERMOPLASTER
SE8105700A SE429315B (en) 1969-09-25 1981-09-28 DEVICE FOR EXTRUDING A THERMOPLAST EXISTING MULTILAYER WRAP

Family Applications Before (1)

Application Number Title Priority Date Filing Date
SE8105701A SE429316B (en) 1969-09-25 1981-09-28 PROCEDURE AND DEVICE FOR CO-EXTRUSION OF A MULTILAYER COAT WITH A CORE LAYER AND A TEAM LAYER COVERING THAT THAT COAT BEATED BY THERMOPLASTER

Country Status (3)

Country Link
DE (1) DE1948442C3 (en)
FR (1) FR2063013A1 (en)
SE (2) SE429316B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2311164A1 (en) * 1972-06-19 1974-01-17 Welex Inc METHOD AND DEVICE FOR MANUFACTURING MULTIPLE LAYERED FILMS
DE2753103A1 (en) * 1977-11-29 1979-06-07 Roehm Gmbh METHOD AND DEVICE FOR THE PRODUCTION OF A FILM-COATED HOLLOW PROFILE STRAND FROM PLASTIC
US5190711A (en) * 1988-06-09 1993-03-02 American National Can Company Methods for processing polymers
DE68927200T2 (en) * 1988-06-09 1997-04-24 American National Can Co Process for producing multilayer film materials, process for processing polymers, extrusion device, polymeric film material and packaging produced therewith

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4165210A (en) * 1964-03-09 1979-08-21 National Distillers And Chemical Corporation Laminated products, and methods and apparatus for producing the same
US3479425A (en) * 1965-07-22 1969-11-18 Dow Chemical Co Extrusion method
FR1489598A (en) * 1965-08-19 1967-07-21 Dow Chemical Co Method and apparatus for extruding a composite film
US3334382A (en) * 1965-08-30 1967-08-08 Dow Chemical Co Extrusion adapter
FR1495368A (en) * 1966-09-30 1967-09-15 Crown Zellerbach Corp Multi-layer thermoplastic films

Also Published As

Publication number Publication date
SE8105700L (en) 1981-09-28
DE1948442B2 (en) 1975-05-15
SE8105701L (en) 1981-09-28
DE1948442A1 (en) 1971-04-01
SE429316B (en) 1983-08-29
FR2063013A1 (en) 1971-07-02
DE1948442C3 (en) 1981-02-05
FR2063013B1 (en) 1975-01-10

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