DE1913185A1 - LONG PLASTIC PRODUCT CONTAINING FIBRILLES AND METHOD FOR MANUFACTURING THE SAME - Google Patents

Description

DR .. ELISABETH JUNG, DR. VOLKER VOSSIUS, DIPL.-ING. GERHARD COLDEWEY

PATENT LAWYERS 8 MÖNCHEN 23 · S I E G ES ST R ASSE 2β ■ TELEPHONE 345087 · TELEGRAM ADDRESS; INVENT7M0NCHEN

1913 185 March 14th. 1969

AKU 1191 (My / ho / Hu)

ALQEMEBB KUHSStXJMI UIIS U.V. Arnheici, Holland

Long plastic product and process containing glasses on the production of the same

Priority 16 * Has «1968, Holland Blackbird ^ Er <,: 68-03777

The invention consists of a long "fibril-evolving" plastic product and a method for hearing division of the same and relates in particular to tine foil or polecat _f itlctn cunning, IPaotn or staff "saber consists of the invention" B € # """ Tti · product from aindeatsns at two different "Polycieriesstta, of which" at least one "forms a basic measure""in another Pol-yaeriaat Ib 9ors a very great view! rm is fibrlllen endless least a hundred "

809841 / 1BT7

(fiber-reinforced or fibril-containing fibers from the laid-open Dutch patent applications 66-12628 and 67-12079 known

Gen & S of the charge has now inclined that a fibrillan-containing substance of the above-mentioned kind, which eleven by the fact that the fibrils are essentially thread-shaped and see at different points tides' the transverse path of the eye in superimposed layers at different angles Longitudinal axis of the plastic product is tapered, particularly well suited for special applications. If the basic material is made of polypropylene and the fibrils are made of the relatively strong 6-polyamide, there was ¹ , one containing fibrils Polypropylene or polyethylene film can be obtained, which is in all directions with Polyactidfihrlllen gXaiohaao '.

Such a film has a greater strength and consistency than a film made of dor Srjßdroase "ttesteht"

Since the product in accordance with the invention is marked, the »r Sfitse Winkel« sweep the length of the Pibyill * © dir Uiagsaohat the product via the cross-way d ··

slowly m ~ or abnianat. (If so, the discovery of the P3O4 «kt advantageously also aue» d «i sharp angles as well as the longitudinal neceses of the ilterilli vaA of the product "see from 0 ° ~ 90 ° changes ₀ Iu" to **

g is the #stirk «a9v fibrils longer than 5 m, in front of «Tv 3cl« iner than do

The Sriinduag see also on Fsservli «ee _p

Game consisting of a plastic product gea & i 4-pack one,

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The invention also relates to a process sum 'manufacturing a plastic products of the above mentioned type, in which a current "consisting of at least" white polymers "which aind arranged in sswei layers _f a treatment in the" terworfexi wired through which a multi-layered existing current wixtf formed which, during sr maintains its continuity in the flow direction either in a direction transverse jbu seiUweiee the layers at least once every f iiarillenbildende leilstrtfme whose Querahmeseungen * the layers lie in the Grüßanordnung the starch in situ? divided or under the influence of U. & T surface tension spontaneously fevered wijsfr tt & d 4er I is then "pressed through an extrusion opening". Mee / proceed ». _f is characterized in that the resulting gefaeerte folymerisat8t ^ om _r is before it is pressed by the Extrudieröffmmg, vevaetsst in rotation · acc the Erfincumg the angular velocity of the rotating Polyaeriaatstroas changes in the radial Richtimgο The above-mentioned spontaneous fibrillation can be obtained ,, when the multi-layer poly *? . merisatstrom gives a correspondingly long dwell time "Advantageously, the rotating, fixed! polymer satetrome has the shape of a Völlayliadere, with the torque acting on the wall surface of the same" ^:

The method ge ^ & AESS he invention may also be effectively carried out when the rotating _f gefaeerte Polymsrisatstromi annular shape and has BreMeraft acts on the inner surface or the outer surface of this annular stream. In addition, the inner surface and the outer surface of the toroidal currents can advantageously also be rotated in opposite directions.

J «according to the desired end product, the fibrous« earieatstrom after the lottering through a circle-shaped or tin * ring-shaped opening or through a straight base . be developed »

9841/1517

Fiber fleeces, thread fleece and yarns can according to the invention be produced in a relatively simple manner by the The matrix is completely or partially removed from the fibrils, β · Β · with the help of a solvent

The invention is explained in more detail below with reference to schematic drawings of several exemplary embodiments

Figo.l shows an apparatus for producing hoses according to the invention;

Fig. 2 shows, on a different scale, a section along the line II-II in Fig. 1;

3 shows a representation of the structure on a different scale a hose produced with the device according to FIG. 1; Fig. 4 shows an apparatus for producing bars

according to the invention; .

Fig. 5 shows a representation of the structure on a different scale a rod produced with the device according to FIG. 4; 6 shows an apparatus for producing films or sheets according to the invention;

FIG. 7 shows, on a different scale, an illustration of the structure of a plate produced with the device according to FIG. 6; Fig. Β shows another one. Embodiment of an apparatus for producing hoses according to the invention; F.igo 9 shows, on a different scale, a representation of the construction of a tube _{β made with the device according to FIG}

In the device shown in Fig. 1, there are two different dene molten polymers fed under pressure through lines 3 and 4 in the direction indicated by the arrows, separate pumps 1 and 2 are used for the two polymers. The two polymers combine in channel 5, through which they fllieeeeno side by side. The channel 5 includes an extended area in which a first mixer 6 with stationary guide parts in the Dutch patent

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103 356 is arranged in the mixer 6 the beginning stream consisting of two layers (namely one layer of each polymer) is repeatedly expanded and in divides a stream consisting of many layers with, for example, a total of more than a thousand parallel layers. Immediately after leaving the mixer 6, there will be many Layers existing main stream in a second mixer 7 of the same type passed. The mixer 7 is, however, to his Longitudinal axis rotated at an angle of 90 with respect to the first mixer 6, so that the layer structure formed in the second mixer perpendicular to the layer structure formed in the first mixer 6 runs o The number of leaders, which increases the number Layers determined «can often be smaller in the second mixer 7 than in the first mixer 6 "

The effect produced by the second mixer is; that a second layer structure is superimposed on the layer structure formed in the first mixer 6. In the second mixer 7, the layers formed by the first mixer 6 are split up perpendicular to their planes, so that individual liquid flows are formed which, under the influence of surface tension and viscous forces in the spinning mass, do not reunite to form layers that stick together when they pass the second mixer 7 have gone through. After leaving the second mixer, the liquid mass flows through a line 8 into a housing 9 in the seal indicated by the arrows. Beyond the second mixer, the liquid polymer stream consists of a basic mass or a basic structure 10 of one polymer in which a large number of endless liquid threads or fibrils 11 are embedded ₃ which extend in the longitudinal direction of the flowing spinning mass (see Fig. 2) "

It should also be pointed out that the flow of fibrous or fibril-containing liquid shown in FIG. 2 is on the other hand can also be obtained in such a way that one consisting of many layers Main atom immediately after leaving the first Mixer 6 instead of a second mixer 7 through a gauze .packing directed

becomes, in which the βinsaInen layers in fibril-forming Flüeelgkeltsatrtime are split up »Bas exemplary embodiments in which a cooking package is used is not shown in the drawings, but is from the above-mentioned laid-open Dutch patent application 66-12628 to eich known *

After leaving the line 8 of the Pibrillen containing flü88ige Polymerisatstrom flows into an annular space 12 in the housing 9 »This annular space is limited 13 on one side of the fixed wall of the housing and on the other side of a core 'of the through dan arrow indicated direction is rotated «The ring taura 12 opens into a ssweitan annular space 14t which ends in an annular opening 15» through which a tubular «« plastic product 16 is extruded. The structure of this product is on an enlarged scale and partially in section in Pig, 3 shown in perspective o The inner side of the ring-shaped liquid flow in the tree 12 is only in contact with the calibrating core 15 "so that there is a speed gradient across the cross-section of the liquid flow in such a way that the inside of the ring-shaped liquid flow has practically the same area" catch speed is communicated »like the circumferential surface of the dre the relatively viscous Henden core 13o The outside, ¹ annular Flüssigkeitsetromes is in contact with the oretfesten wall of the housing 9 _S so that the peripheral speed at the outside of the annular fluid stream is "Surprisingly, it has geteigt practically equal to zero" that, as a result of the above Speed differences in the liquid polymer mass, the fibrils in the extruded tube 16, depending on their position in the superimposed layers, extend at different angles to the longitudinal axis 17 of the tube. In a perspective and partially sectioned area of the tube 16 in FIG. 3, the position of the fibrils in relation to the longitudinal axis 1? shown at three points 18, 19 and 20 of the Seiaauehwand «η the layers 18, 19 and 20 are the

Angle oC between the longitudinal axis of the thread-like fibrils and the longitudinal axis of the tube 16 is approximately 80 °, 50-60 ° or 30 °, while on the outer surface of the tube 16 the angle between the fibrils and the longitudinal axis of the tube is approximately 0 °. On the inside, the fibrils are at an angle of approximately 90 ° to the longitudinal axis of the tube ₀ Over the entire wall thickness of the tube 16, the above-mentioned angle changes slowly from 0 ° to 90 ° ο

In connection with the Figo 1 and 3, the production of a thick-walled hose has been described, however, Ea is clear, it is dasβ possible to produce similarly thin-walled Foliensehläu- like before, which are inflated after leaving a narrow Sxtrudieröffnung to a larger diameter can o

4 shows a device for producing a plastic rod 21, the same reference numerals being used for corresponding parts. This device also comprises an annular rotating zone 12 ₀ . the rod 21 being extruded through a circular opening 22o also in this ^. "—'-— ^ S":? I? the cross-section of the rod 21 to lie the thread-like fibrixia at different angles to the longitudinal axis of the rod "

5 shows a rod 21 with layers 23, 24, 25 and 26, which are shown in the partial section _o The corresponding angles in these layers are about 70-80 ° _p 50-60 °, 30 ° and 15 ° ₉ during the V. The angle on the outer surface of the rod is practically 0 ° »

6 shows a device for producing a plastic plate or sheet 27, the same reference numerals being used again for corresponding parts. This device also comprises an annular rotating zone 12 _c

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. - θ · ■

Fibrous polymer atetrome through a constriction 28 into a slowly widening space 29s which ends in an elongated gap through which the film 27 is extruded η Here, too, the thread-like fibrils lie across the cross-section of the film 27 at different angles along the longitudinal axis of the shape ₀ % to Beiepiel in the layers 30, 31 * 32, 33 and 34 (flee Figure "7) be the Viinkel between the Fibril1en and the length axis of the web about 15 ° _P to 50 °" 90 ° _t 50 ° or * 15 °, while the corresponding fisiteel on the underside and on the top be about 0 °

Figc θ shows a device for producing a plastic pipe 35 or a film tube ^ with the same again Reference signs for corresponding parts are used »Here the liquid flow in the rotating zone 12 on both sides of the Annular space rotated in opposite directions »namely i through the core 13 in one direction and through the wall 36 in 1 in the other direction »In the direction of the current behind the turning one 12 becomes a tube-like product 35 by an annular one Orifice 37 extruded "The wall 36 is functional driven and stored in a sealing manner in the housing 9 »Also hler. The thread-like fibrils extend over the cross section of the tube 35 at different angles to the longitudinal direction of the tube .

Fig. 9 shows, on an enlarged scale, a cross-section through a hose produced with the device according to 43 away, as roughly indicated by line 42. Between the inner and outer surface of the rotating liquid, a kind of neutral layer 44 forms in which the speed of rotation is practically zero Longitudinal direction of the tube 3 £ so that it is ^{approximately 0 ° in the neutx 4} alen layer and then

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on either side of this layer from about 0 ° to about 90 ° in increases in the directions indicated by arrows 45 and 46 O

Se should be mentioned "that as Polymerisatbestandteile be used various materials könnenο The Srundmasse or the basic structure may be, for example, _e det made of polystyrene, made of polypropylene, polyethylene or a polyamide, and the Pibrlllen example, a polyamide or a polyester USAGE"

Claims (1)

Claims 1o Long "fibrils containing plastic product, particularly a foil or plate ,, a tube, thread or rod made of at least two different polymers, one of which forms at least one of a Gruftdmaasa _T in represents another polymer endless in the form of a very large number of at least one hundred fibrils is included, characterized _e in that the fibrils (11) are thread-shaped and located at different points across the cross section of the product away in overlying layers (18-20; 23-26; 30 34; 44) at different angles to the longitudinal axis ( 17) of the plastic products (16; 21; 27; 35) extend * 2 ·. Product according to claim 1, characterized in that the cross-section of the product acute angle between the longitudinal axis of the fibrils and the longitudinal axis (17) of the product gradually increases or decreases * 3 ι product according to claim 2 _t characterized in that the acute angle sswischen the longitudinal axis of the fibrils and the longitudinal axis of the product (17) changes from 0 ° - 90 ° «, .4 »Product according to one or more of the preceding claims, characterized in that the Thickness of the fibrils (11) is less than 5 / U, preferably even smaller than i / U 5 «fiber fleeces or thread fleeces, characterized in that they are made of a plastic product according to one or more of the preceding claims are made « ο ο ι 6 c yarns f. Thus known leaned "that egg" from a plastic product according to one or more of Claims 1 to 4 made and » 7 π Process for the production of a plastic product according to one or more of the preceding claims «in which a stream * which consists of at least two polymers« which are arranged in sv / ei layers is subjected to a treatment, by means of which a stream consisting of many layers is formed, the _s v / hile "r maintains its continuity in 8trÖmungerichtung, in the direction transverse au layers temporarily at least once in Pibrillen forming rope currents" whose transverse dimensions divided in the order of the thickness of the layers in lie situ "or under the influence of the surfaces tension is spontaneously fiberized and is then pressed through an extrusion opening, characterized by the fact that the resulting fiber polymer is set in rotation before it is pressed through the extrusion opening (15i 22s 37) ο 8 ο method according to claim 7 “dadt * rcL gskennzei Ch = net that the angular velocity of the rotating polymer! - satstrom changed in the radial direction 9 ο method according to claim 7 or 6 _r characterized in that the rotating t gefaeerte Polymerisatstrom has the shape of a solid cylinder "wherein the same, the rotational force on the wall surface acts (Figo 4) = 1oo method Naeh claim 7 or 8 characterized geke _P η η - ■ - records "that the rotating fibrillated polymer stream annularly ^ 11c method according to claim 10 _P thereby geke η η Sf. eic; h η et "that the torque acts on the inside or on the outside of the annular flow" 9098A1 / 1517 12c method according to claim 10 »thereby g · k e η η« Rewards that the inner surface and the outer surface dee toroidal currents rotated in opposite directions become (Pig «8), 13ο Method according to one or more of claims 7 to 12, characterized in that, after rotating, the fibrous polymeric breath stream is shaped through an extrusion opening (22) with a circular cross-section ₀ 14 ° The method according to one or more of claims 7 to 12, characterized in that the fed After rotating, the polymer stream is forced through an annular extrusion opening (15) « 15 * ~ Method according to one or more of claims 7 to 12, characterized in that the fibrous polymer stream is pressed after rotating through an extrusion opening which has the shape of a straight sole (Pig ".6), 16 ο Process for the production of fleeces or yarns according to Claim 5 bsw «6, characterized in that that the orund mass is completely or partially, for example is removed from the pibrils with the help of a solvent » 909841/1517 " L β β r «β i t e