DE1504122A1 - Process and device for the continuous production of foils, in particular from thermosetting synthetic resins - Google Patents

Description

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Dr.lOnCRiiOS.Or.-l: ig.LOTT :: i!: Ss

Frankfurt u.M. · LictvtiitisteinstruJoiJ

Dipl.Ing. Joftsef DEMETER, Budapest III., Csillaghegy, György ut 3 »Hungary

Method and device for the continuous production of films, in particular from thermosetting synthetic resins

Various processes are already known for producing synthetic resin films from a melt, without solvents, such as rolling, drawing through a wide-mouthed extruder, blowing Equipment that serves to participate in the trade is, however, only suitable for processing thermoplastics.

The present invention has for its purpose, also from thermosetting synthetic resins such as phenol, cresol, melamine, spoxi and the like to produce foils. The thermosetting Kunet resins undergo a chemical transformation on the action of heating, the degree of which depends on the duration and temperature of the heat treatment.

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YoIi · are produced from a thermosetting synthetic resin, so the following requirements must be met, taking into account the inevitable v, arm from β action

a) The thermosetting synthetic resin may only be used for a short period kept at the temperature necessary for the manufacture of the foil. Phase "A", so soluble and easy to focus on.

b) In the production of the thermosetting synthetic resin films, there must be jade cords of synthetic resin in the interest chemical homogeneity of the film to be produced is kept at the same temperature for an equally long period.

Of the previously known methods, these two requirements can be met by the wide-mouthed pulling out and are not met by the blowing, since the resin particles through the extruder too slowly and in particular flow through during different times. Rolling is the process of sucking films made from thermosetting synthetic resins therefore not feasible because the latter adhere strongly to the waI-aenoberfläah © and only by scraping off can be separated from it

These difficulties are caused by the Invention resolved «that the synthetic resin between two heatable rollers or between the heatable rods of one Remnants or grids passed through and melted, then into a closed one! heated tree headed by there through a gap of adjustable width hindu ine free · left and possibly nooh duroh before cooling Stretching is thinned

The «facility for the implementation of the

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ten process is characterized by Ewel, the breadth of the the film produced is the same length as the heatable rotating enamel " walsen »which have a feed device sound adjustable front * · heating temperature and adjustable supply upstream and a collecting trough old controllable heating let down, with the upper bands of the collecting trough have scrapers in contact with the Schmmlswalsen and the uanuaelrinne at its deepest point with a continuous longitudinal gap of adjustable width is provided.

In the case of a more formal design of this device, one of the width is used instead of the SchmelswalEon the film that divides repentance is equally long «controllable Schmolcrost, to which an intake device is more variable Carrier speed connected upstream and a collecting belt of controllable heating naohgssohalte is, with above the Uafangs Ass Rest ** a cooled lane opposite the grate heat-insulated 1st and the collecting channel at its lowest point a continuous longitudinal gap adjustable Width reserved.

Further elements of the invention are illustrated in FIG Drawings described in more detail, which illustrates three types of construction dsr device according to the invention eohematisoh.

Fig. 1 shows a simple outline in section e.tttr au dsr her »ue dividing en foil.

fl4 · 2 represents one modification of the design aaoh fjLft X Aar «

flg. 3 shows one of Aritt's variants, bsi which the rotating ßohmelswalsen according to pages 1 and 2 by a fixed

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standing red or a grille to be replaced «

4 is a section perpendicular to Hg * 5.

In fig «1 bind only the main parts of the facility shown. The length of the Schaolgwalsen 1 is equal to the Width of the film to be created · The two upper edges a collecting channel 3, the length of which is the width of the iu erseugenden Foil corresponds, Bind equipped each with a Rakelmeeeer 2 »who are in contact with the orphans and the same long as these are · at the collecting gutter 3 leave a gap at the bottom 4, which is the same length as the chins and the width is adjustable melted synthetic resin continuously "in the form of a film ina free flow out"

The Kunsthar "5 is applied to SWEi hei" bareι rotating Sohmeliwaisen 1, the temperature depending on the desired temperature dee Kunstharses worked up can be controlled arbitrarily · Controlled are further rotation "SSHL, U.9T Abet and 6 to su Hull and the direction of rotation der Sohmelswalsen · Kunathars, cold or preheated to any desired temperature, is added to Sohmelswslsen in the form of powder, granulate, block or Sohmelse. If necessary, the art «ha» 5 can be used against the Schmelswelsen etc. with the help of a feed device with adjustable speed. whose surface vergesohosea *

That with the Sohmelswalsen 1 la contact advised lunethmrs sohmilst van the warmth of the orphans and remains aa the surface of which adhere, so that the cohesive layer is formed auroh the rotating orphans kontlmuierlloh - β.B. at dsa la Flg. 1 illustrated sense of rotation over dta gap 6 - read

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Inside the Alone 3 is promoted. Here is the clinging Harssechlcht from the surface of the melt rollers Squeegee marker 2 separated · The separated synthetic resin collects aich in the heated back 3 and then flows after filling the gutter under the pressure of the etetig ankoiuaendan newer Resin amounts through the gap 4 inö free. By gushing out the gap 4 with a steady flow of wind leaf-shaped synthetic resin layer is replaced by otr. position to the polie designed to be stronger than usual

The strength of the stepping out through gap 4 Synthetic layer k & jon through Aonderuu, the width of the gap 4 to be enat'vllt aer Kundtharaeciilciit the following possibilities are available to disposal. Will be changed

α) the output speed aee ^ unsthurses 5 »

b) the temperature of the melting rollers 1 and / or the Collecting channel 3,

c) the feed temperature of the synthetic resin,

d) the width of the gap 6 between the melt whales 1,

e) the speed of the melting scales 1

In order to ensure the homogeneity of the ixd ei; jiunatharzachicht too. increase, curuien the melting rollers 1 are driven at different speeds, furthermore one can accommodate in the collecting channel 5 & in Filtsr and a heatable torpedo

Si · Homogeneity and at the same time the $ 9 time unit processed out lets aioh duroh increase the training of the facility vegetables 71g »2. Hler is in the gutter

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5 a pair of rollers 10 housed, the rollers of each other - * ■ touch and go around the indicated arrows »This The design has the following advantages: As a result of the friction on the rollers 1 and 10, that which emerges through the gap 4 Synthetic resin very homogeneous and on the other hand form the calibration touching »alzen 10 a gear pump with an infinite amount Teeth * as a result of this gear pump «- the one with A finite number of teeth could be formed - arises barely 0 a very high pressure, so also with spool 4 a very high outflow & eschwindigkölt I can also use a filter and use an inclined torpedo

In room 8 of the oamutelrlnne 3 you can also use the wall doctor blades in contact with the groove or scraping be arranged in the longitudinal direction of the gutter alch move back and forth, scraping off the adhering synthetic resin from there and preventing it from being deposited

In the setup described is one task the Schmeläwaleen the heating of the synthetic resin on the Desired temperature · Anate parts of the Uchmelewalzen can also a host or itter according to fig. 3 for heating the good " can be used · The length dta * irritated gutter 12 is the same the width of the film to be produced. At their lowest point an adjustable gap Id is formed .. Aa upper widths The rope of the gutter 12 is a red 15 'with transverse trees provided, this grate can also be heated. At the channel 12 is a heat insulating plate 14 and a cooled one on this Frame 1? attached. The geitüolte frame β bags the middle Carrier 11 from the Kunathar «feeding device 9, which the Kunet

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hare 5 naoh down, against which Ro et I ¹ J hin re rs eh. praises.

The working method of the installation lot the following * The Kunatharc block 5 "which length corresponds to the width of the foil to be produced" is moved downwards by the feeding device at the prescribed speed "The block comes to lie on the inclined grate 15" and is melted on the surface " Daa gosohmolaene synthetic resin penetrates through the opal te dea Uo3tee 15 hinduroh into the interior 16 of the secret collectors 12. Here it gradually fills up the volume of the chins and then also the space 17, which forms between the bloom 5, the upper surface of the booklet 15 and the cooled frame 13. Bas ia Hau »17 near the top penetrating molten hair solidifies« followed by cooling through the lower surface of the cooled frame 13, so that it cannot penetrate into the gap between the resin block 5 and the frame 13 Room 17 solidifying material creates a seal that blocks the “veg” from above. In the channel 16 that is in this way, the flareblook progressing downward under the action of the feeding device 9 brings about a pressure on which the molten hair flows continuously through the upalt 18 in the form of a foil into the open. The strength of the emerging poIit is clearly boatiomted by the width dta gap 18 and dia auatrittagesohwin4i (r) ceit by the Bawtgungagaaohpe of the liarsblook 5 advanced by the feeding device 9. The harsfalia emerging from the gap 18 can still be dux oh btra ver

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The temperatures of channel 12 and Eostee 15 can be set independently of each other to the value because it corresponds to the properties of the resin to be processed The advancing speed of the feeding device 9 is bark. big adjustable

The feeding device 9 can be designed in various ways, but it can have a toothed pair of wheels on both sides or they can be connected to one another by a drive caterpillar chain. In the case of synthetic resins of low compressive strength, such as phenol-kreeol resins, one can generally use such resin blocks, the contact surface of which with anu task valve 9 is designed like a rack. If the interlocking of the feed rollers 9 has the same module as the toothing of the resin block, it is possible to achieve non-slip dosing with a maximum Eresa force corresponding to the strength of the resin. With these embodiments, the process of the resin block can be changed without any subscription to the production

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Claims (4)

. Patent claims * 1. A method for the continuous production of foils, in particular au.3 WärnehärtixaeiL liunatharzen »characterized in that the ο da» i'unathara between two curable Valaon or zvjioclicn don audible otäbuii of a float and then geochmolaeix, then in. A closed, heatable headed room van _t there by a controllable L> palt into the open ^ elaasea tuid gc & obGikn- · jfalls before his Afcicühlung by Ströclrun ^ far-or verdüimt \ vill. 2 * Information on carrying out the procedure according to IvJrC-V) IOb. 1, ~ «k t- η η ζ υ i η ο t through ζν» ώΙ, the width of the horzuetoiie ^ dx-n Folio equals lan ^ e, heiiib.rs and rotatinga ochraolKwalaen (1), denon. ..- in © Au.? _t ; subscription device from re {jolburex Vorvväriaun.-Qtuiiiperutur and. ro ^ olbarsr Zuloitunge- ^ söcliv-iiidi'jküit vox ^ switches \ ι · .Ά oine üaraiaelriiiLne (O) with adjustable IToizung Nachga-sehaltot iut, wobui diü upper hand dor seed gutter nit <iun "fchnii-lBwalzcn: : Berlihrmi <; stand-ίο Abechaber (2) auiwoiijt una dio Sammelriimo to ilirer tiofaten point with α ciurolilaufunden in M LängBapalt (4) rg ^ llm-cr Breif-t vnro '^ iub Höu. 5 »-ilnrichtunii according to Anapruch 2, thereby ^ 3 i; e η η is characterized, DAAs Schcielatemperatur, l'rohzaiil, the direction of rotation and gfi enaeitigcu ^ ¹ ^ chmclzwalzen distance of the (l) adjustable aind. 4. f.inrlclifeung according to claim 2 and 3 »thereby β ek e Ii α ζ ο i ο h η et, duea in the Sanuaelrinnc (8) a adjustable ^^ izable torpedo uiid «housed in filter Bind · 9 0 9 a-1 9 A1 2 3 k BAD ORIGINAL 5 «Device according to one of the claims? -4 * g β · identifies, dui'Ch saw ei, arranged in the iJaiiuaelrinne (8), in contact with each other along an ISraei ^ ends, standing-, Gegonuinandar rotioronue, equal to the Oammelrinne ^ e smooth-surfaced scales (10), old, viii® have adjustable ir ^ length and their speed can be changed. 6 «, iüiiirrichtung according to claim 5, characterized £, eke η η ζ α 1 ο η χι et that di - luautolf läohan dor ., Alz ^ n (10) ifiit Yermüinmi &'- m anagobildat, diö- mi einanuor jcüiomsn · T. device according to uineiii dor claims 2-6, ^ ek ο η η. ίί ο i c Ii no t through in dor üaBim.jlri-.no (B) in the clitun ^ bin and her rate aboohabor for α ie Imionder riawmulrirme 8, "iinrichtung- aur Durcliführun ^ · clew Verf according to claim 1, c ο ka η η ss e 1 ch η α t durca the width of the animal to be produced. Foil equal to lan ^ on, tar gehoiaten ochmelz'OBt (3.5), dom όϊι \ ϊ .titni-fmorvor (9) variable MitnohiriurigngescmVindi ^ l:,.: lt before ^ ₁ ί.ε, ehalt and cine Saajnelrinno (16) is followed by adjustable heating, whereby above the üzafangs of the Rootei ·. a cooled tap ( 13) opposite the Raat v.ärmöisolierend is attached and the ίϊαΐωιο! Channel at its tiofston ίίtolle ü continuous longitudinal gap (18) has a controllable width BATH ORIGINAL • 10 - 909811/123 4