IT201800006605A1 - Process for the production of a corrugated profile sheet in thermoplastic material and relative equipment. - Google Patents
Process for the production of a corrugated profile sheet in thermoplastic material and relative equipment. Download PDFInfo
- Publication number
- IT201800006605A1 IT201800006605A1 IT102018000006605A IT201800006605A IT201800006605A1 IT 201800006605 A1 IT201800006605 A1 IT 201800006605A1 IT 102018000006605 A IT102018000006605 A IT 102018000006605A IT 201800006605 A IT201800006605 A IT 201800006605A IT 201800006605 A1 IT201800006605 A1 IT 201800006605A1
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- Italy
- Prior art keywords
- corrugated
- profile
- sheet
- process according
- polymer
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 27
- 238000004519 manufacturing process Methods 0.000 title claims description 15
- 239000012815 thermoplastic material Substances 0.000 title claims description 15
- 239000000463 material Substances 0.000 claims description 13
- 238000001125 extrusion Methods 0.000 claims description 6
- 229920000642 polymer Polymers 0.000 claims description 6
- 235000013311 vegetables Nutrition 0.000 claims description 4
- 239000004757 mineral textile Substances 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 230000000295 complement effect Effects 0.000 claims description 2
- 239000002861 polymer material Substances 0.000 claims description 2
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 229920001971 elastomer Polymers 0.000 claims 1
- 239000005060 rubber Substances 0.000 claims 1
- 230000004927 fusion Effects 0.000 description 2
- 239000012768 molten material Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000379 polypropylene carbonate Polymers 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/22—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
- B29C43/224—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length having a profiled section, e.g. tubes, rods
- B29C43/226—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length having a profiled section, e.g. tubes, rods having a corrugated section
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D16/00—Producing articles with corrugations
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Description
"Procedimento per la produzione di una lastra a profilo grecato in materiale termoplastico e relativa apparecchiatura" "Process for the production of a corrugated profile sheet in thermoplastic material and related equipment"
Il presente trovato riguarda un procedimento per la produzione di una lastra a profilo grecato in materiale termoplastico e relativa apparecchiatura. Più particolarmente, il trovato riguarda un procedimento per la produzione di una lastra 3D a profilo grecato in materiale termoplastico . The present invention relates to a process for the production of a sheet with a corrugated profile in thermoplastic material and relative apparatus. More particularly, the invention relates to a process for the production of a 3D sheet with a corrugated profile made of thermoplastic material.
Sono note tecnologie per la produzione di materiali in lastra che possono servire per produrre pannelli e simili. Technologies are known for the production of sheet materials which can be used to produce panels and the like.
I materiali in lastra vengono prodotti con processi di produzione che prevedono un estrusore con ad esempio una testa speciale da cui il materiale esce già con il profilo desiderato, ma non con un profilo grecato; il materiale passa poi ad una stazione di calibrazione per raffreddamento e stabilizzazione. The sheet materials are produced with production processes that provide for an extruder with for example a special head from which the material already comes out with the desired profile, but not with a corrugated profile; the material then passes to a calibration station for cooling and stabilization.
I materiali utilizzabili sono polipropilene e policarbonato, ma, come detto, non è possibile ottenere un profilo grecato, ma semplicemente un profilo con due strati esterni e nervature longitudinali interne. The materials that can be used are polypropylene and polycarbonate, but, as mentioned, it is not possible to obtain a corrugated profile, but simply a profile with two external layers and internal longitudinal ribs.
Sono inoltre noti procedimenti per ottenere lastre corrugate con profilo ondulato o a greca con un processo di produzione che consiste nel formare una lastra con testa piana e cilindri calandra; successivamente la lastra viene passata al processo di piegatura con rulli o calibro che vanno a formare il profilo desiderato. Methods are also known for obtaining corrugated sheets with a corrugated or fret profile with a production process which consists in forming a sheet with a flat head and calender cylinders; subsequently the sheet is passed to the bending process with rollers or calipers that form the desired profile.
In tutti i processi noti, tuttavia, le lastre con profilo grecato sono realizzate mediante successive fasi di lavorazione e solo con alcuni particolari materiali termoplastici. In all known processes, however, the sheets with corrugated profile are made by means of successive processing steps and only with some particular thermoplastic materials.
Compito precipuo del presente trovato è quello di realizzare un procedimento per la produzione di una lastra a profilo grecato in materiale termoplastico, mediante sostanzialmente una singola fase di processo. The aim of the present invention is to provide a process for the production of a sheet with a corrugated profile in thermoplastic material, substantially by means of a single process step.
Nell’ambito di questo compito, uno scopo del presente trovato è quello di realizzare un procedimento per la produzione di una la lastra a profilo grecato in materiale termoplastico mediante il quale si possano impiegare materiali termoplastici caricati e non, oltre che materiali ignifughi . Within this aim, an object of the present invention is to provide a process for the production of a corrugated profile sheet in thermoplastic material through which loaded and unloaded thermoplastic materials can be used, as well as fireproof materials.
Un altro scopo del presente trovato è quello di realizzare un procedimento per la produzione di una lastra a profilo grecato in materiale termoplastico, in cui la lastra possa essere accoppiata a film superiori e inferiori, sintetici vegetali o minerali, per formare un pannello. Another object of the present invention is to provide a process for the production of a sheet with a corrugated profile in thermoplastic material, in which the sheet can be coupled to upper and lower films, synthetic vegetable or mineral, to form a panel.
Un ulteriore scopo del presente trovato è quello di realizzare un'apparecchiatura per la produzione di una lastra a profilo grecato in materiale termoplastico. A further object of the present invention is to provide an apparatus for the production of a sheet with a corrugated profile in thermoplastic material.
Non ultimo scopo del presente trovato è quello di realizzare un procedimento per la produzione di una lastra a profilo grecato in materiale termoplastico, che sia di elevata affidabilità, di relativamente semplice realizzazione ed a costi competitivi . Not least object of the present invention is to provide a method for producing a corrugated profile sheet in thermoplastic material which is highly reliable, relatively simple to manufacture and at competitive costs.
Questo compito, nonché questi ed altri scopi che meglio appariranno in seguito, sono raggiunti da un procedimento per la produzione di lastra a profilo grecato in materiale termoplastico, comprendente le fasi che consistono nel: This task, as well as these and other purposes which will appear better below, are achieved by a process for the production of a corrugated profile sheet in thermoplastic material, comprising the steps which consist in:
alimentare materiale in polimero da un estrusore mono-vite o bi-vite ad una testa di estrusione; feeding polymer material from a single-screw or twin-screw extruder to an extrusion head;
convogliare il materiale in uscita da detta testa ad almeno una coppia di cilindri calandra, caratterizzato dal fatto che detti cilindri calandra sono sagomati sulla loro superficie esterna in modo da definire rispettivamente un profilo a sagoma grecata femmina e un profilo complementare a sagoma grecata maschio, per la formazione, direttamente nel momento del passaggio del materiale fuso nello spazio tra detti cilindri, di una lastra grecata, in seguito ad un'azione meccanica di schiacciamento. conveying the material outgoing from said head to at least one pair of calender cylinders, characterized by the fact that said calender cylinders are shaped on their external surface so as to define respectively a profile with a female corrugated shape and a complementary profile with a male corrugated shape, for the formation, directly at the moment of the passage of the molten material in the space between said cylinders, of a corrugated plate, following a mechanical crushing action.
Ulteriori caratteristiche e vantaggi del trovato risulteranno maggiormente dalla descrizione di forme di realizzazione preferite, ma non esclusive, del procedimento secondo il trovato, illustrate a titolo indicativo e non limitativo negli uniti disegni, in cui: Further characteristics and advantages of the invention will become clearer from the description of preferred but not exclusive embodiments of the method according to the invention, illustrated by way of non-limiting example in the accompanying drawings, in which:
la figura 1 illustra in vista in alzato frontale un'apparecchiatura per realizzare il procedimento secondo il trovato; Figure 1 is a front elevation view of an apparatus for carrying out the method according to the invention;
la figura 2 illustra in vista schematica laterale l'apparecchiatura per realizzare il procedimento secondo il trovato; Figure 2 is a side schematic view of the apparatus for carrying out the method according to the invention;
la figura 3 illustra una prima forma di realizzazione del profilo dei cilindri calandra con una lastra da essi realizzata; Figure 3 illustrates a first embodiment of the profile of the calender rolls with a plate made therefrom;
la figura 4 illustra una seconda forma di realizzazione del profilo dei cilindri calandra con una lastra da essi realizzata; Figure 4 illustrates a second embodiment of the profile of the calender rolls with a plate made therefrom;
la figura 5 illustra in vista in sezione trasversale un esempio di lastra grecata ottenibile con il procedimento secondo il trovato; Figure 5 is a cross-sectional view of an example of a corrugated sheet obtainable with the method according to the invention;
la figura 6 illustra in vista in pianta un esempio di lastra grecata con nervature trasversali; Figure 6 is a plan view of an example of a corrugated sheet with transverse ribs;
la figura 6a illustra in vista prospettica la lastra grecata di figura 6; figure 6a is a perspective view of the corrugated plate of figure 6;
la figura 7 illustra in vista in sezione trasversale la lastra grecata della figura 6 con nervature trasversali; Figure 7 is a cross-sectional view of the corrugated plate of Figure 6 with transverse ribs;
la figura 8 illustra in vista in sezione trasversale un esempio di lastra grecata accoppiata a tessuti sintetici, vegetali o minerali ; Figure 8 is a cross-sectional view of an example of a corrugated sheet coupled with synthetic, vegetable or mineral fabrics;
la figura 9 illustra in vista in sezione trasversale un esempio di lastra grecata accoppiata ad un film; Figure 9 is a cross-sectional view of an example of a corrugated sheet coupled to a film;
la figura 10 illustra in vista in sezione trasversale un esempio di lastra grecata accoppiata con due lastre per ottenere un pannello strutturale ; Figure 10 is a cross-sectional view of an example of a corrugated sheet coupled with two sheets to obtain a structural panel;
la figura 11 illustra in vista in sezione trasversale un esempio di lastra grecata doppia incollata nel mezzo e con nervature trasversali; la figura 12 illustra in vista in sezione trasversale un esempio di lastra grecata doppia incollata nel mezzo e con nervature trasversali, accoppiata a due lastre per ottenere un pannello strutturale . Figure 11 is a cross-sectional view of an example of a double corrugated sheet glued in the middle and with transverse ribs; Figure 12 is a cross-sectional view of an example of a double corrugated sheet glued in the middle and with transverse ribs, coupled to two sheets to obtain a structural panel.
Con riferimento alle figure, il procedimento secondo il trovato è realizzato mediante un’apparecchiatura che prevede l'impiego di una testa di estrusione 1, tradizionale, alimentata da un estrusore che può essere mono-vite o bi-vite, in grado di processare tutti i tipi di materiali poliolef ini-termoplastici caricati e non -elastomeri- e anche derivati da PFU. Il materiale che fluisce dalla testa 1 viene convogliato tra almeno una coppia di cilindrici calandra 2 e 3. With reference to the figures, the method according to the invention is carried out by means of an apparatus which provides for the use of a traditional extrusion head 1 fed by an extruder which can be single-screw or twin-screw, capable of processing all the types of filled and non-elastomeric polyolef ini-thermoplastic materials and also derived from ELTs. The material flowing from the head 1 is conveyed between at least one pair of cylindrical calender 2 and 3.
Opportunamente, la lastra o foglia che fuoriesce dalla coppia di cilindri calandra 2 e 3, indicata dal numero dì riferimento 4, esce con un profilo grecato/ondulato, in virtù del fatto che i cilindri 2 e 3 sono sagomati sulla loro superficie esterna per produrre un'azione meccanica di schiacciamento che permette di ottenere direttamente un profilo grecato liscio o con nervature trasversali. Conveniently, the plate or sheet that emerges from the pair of calender cylinders 2 and 3, indicated by the reference number 4, comes out with a corrugated / corrugated profile, by virtue of the fact that the cylinders 2 and 3 are shaped on their external surface to produce a mechanical crushing action that allows to directly obtain a smooth corrugated profile or with transversal ribs.
Così, ad esempio, il cilindro superiore 2 può essere sagomato con profilo a sagoma grecata femmina (20), mentre il cilindro inferiore 3 può essere sagomato con profilo a sagoma grecata maschio (30). In tal modo, nello spazio che si crea tra i due cilindri 2 e 3 viene fatto passare il materiale fuso proveniente dalla testa di estrusione 1 che subisce quindi uno schiacciamento meccanico dovuto all'azione dei due cilindri con profili grecati/ondulati. Thus, for example, the upper cylinder 2 can be shaped with a female corrugated profile (20), while the lower cylinder 3 can be shaped with a male corrugated profile (30). In this way, the molten material coming from the extrusion head 1 is made to pass into the space created between the two cylinders 2 and 3, which then undergoes a mechanical crushing due to the action of the two cylinders with corrugated / corrugated profiles.
Ciò che si ottiene è quindi la lastra 4 con un profilo che può essere ad esempio una sagoma grecata 5 (figura 5), oppure una sagoma grecata 6 (si veda la figura 7), con nervatura trasversale 7 e 8 che può essere sulla parte inferiore (7) e/o sulla parte superiore (8) per rinforzare strutturalmente e dare stabilità dimensionale. What is obtained is therefore the plate 4 with a profile which can be for example a corrugated shape 5 (figure 5), or a corrugated shape 6 (see figure 7), with a transverse rib 7 and 8 which can be on the part lower (7) and / or on the upper part (8) to structurally reinforce and give dimensional stability.
La sagoma grecata 5 così ottenuta può essere accoppiata direttamente con tessuti sintetici, vegetali o minerali. La figura 8 illustra con il numero di riferimento 10 e il numero 11 due strati accoppiati alla greca 5. The corrugated shape 5 thus obtained can be directly coupled with synthetic, vegetable or mineral fabrics. Figure 8 illustrates with the reference numerals 10 and 11 two layers coupled to the fret 5.
Il profilo grecato 5 può essere inoltre accoppiato con un film 12 per ottenere un prodotto simile al cartone ondulato (si veda la figura 9). The corrugated profile 5 can also be coupled with a film 12 to obtain a product similar to corrugated cardboard (see Figure 9).
Ancora, la greca 5 può essere accoppiata con due lastre 13 e 14, figura 10, disposte esternamente, per ottenere un pannello strutturale . Furthermore, the corrugation 5 can be coupled with two plates 13 and 14, figure 10, arranged externally, to obtain a structural panel.
Oppure, figura 11, si possono accoppiare due profili grecati 5 con nervature trasversali, 6 superiore e 7 inferiore, incollate per fusione fra loro nel mezzo, 14, ottenuti per estrusione diretta. Or, figure 11, it is possible to couple two corrugated profiles 5 with transversal ribs, 6 upper and 7 lower, glued by fusion to each other in the middle, 14, obtained by direct extrusion.
Infine, figura 12, si può avere una sagoma grecata doppia, 5 incollata per fusione nel mezzo, 14, con nervature trasversali, accoppiate a due lastre, per ottenere un pannello strutturale. Finally, figure 12, there can be a double corrugated shape, 5 glued by fusion in the middle, 14, with transversal ribs, coupled to two sheets, to obtain a structural panel.
Si è in pratica costatato come il procedimento secondo il presente trovato assolva pienamente il compito nonché gli scopi prefissati, in quanto permette di ottenere, in modo diretto, una lastra grecata o ondulata (o corrugata) ottenuta mediante passaggio di un polimero fuso nello spazio che si crea tra i cilindri opportunamente sagomati, in modo da esercitare l’azione meccanica di schiacciamento . In practice it has been found that the method according to the present invention fully achieves the intended aim and objects, since it allows to obtain, in a direct way, a corrugated or corrugated (or corrugated) sheet obtained by passing a molten polymer into the space which it is created between suitably shaped cylinders, so as to exert the mechanical crushing action.
Il trovato così concepito è suscettibile di numerose modifiche e varianti, tutte rientranti nell'ambito delle allegate rivendicazioni. The invention thus conceived is susceptible of numerous modifications and variations, all of which are within the scope of the attached claims.
Inoltre, tutti i dettagli potranno essere sostituiti da altri elementi tecnicamente equivalenti . Furthermore, all the details can be replaced by other technically equivalent elements.
In pratica, i materiali impiegati, nonché le dimensioni e le forme contingenti, potranno essere qualsiasi a seconda delle esigenze e dello stato della tecnica. In practice, the materials used, as well as the contingent shapes and dimensions, may be any according to requirements and to the state of the art.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT102018000006605A IT201800006605A1 (en) | 2018-06-25 | 2018-06-25 | Process for the production of a corrugated profile sheet in thermoplastic material and relative equipment. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT102018000006605A IT201800006605A1 (en) | 2018-06-25 | 2018-06-25 | Process for the production of a corrugated profile sheet in thermoplastic material and relative equipment. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| IT201800006605A1 true IT201800006605A1 (en) | 2019-12-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT102018000006605A IT201800006605A1 (en) | 2018-06-25 | 2018-06-25 | Process for the production of a corrugated profile sheet in thermoplastic material and relative equipment. |
Country Status (1)
| Country | Link |
|---|---|
| IT (1) | IT201800006605A1 (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2518164A (en) * | 1946-07-02 | 1950-08-08 | Leonard S Meyer | Apparatus for producing composite sheet material |
| US3193434A (en) * | 1961-07-12 | 1965-07-06 | Alexander C H Weiss | Decorative architectural panels and method of producing same |
| US3682736A (en) * | 1968-07-18 | 1972-08-08 | Susumu Akamatsu | Method for the continuous manufacture of corrugated cardboards of synthetic resin |
| JPS58224262A (en) * | 1982-06-22 | 1983-12-26 | Yamakin Kogyo Kk | Solar heat energy absorbing panel |
| US4499040A (en) * | 1981-04-20 | 1985-02-12 | Nissen Chemical Industries Co., Ltd. | Production of stamped plastic sheet |
| EP0459223A2 (en) * | 1990-05-31 | 1991-12-04 | BASF Structural Materials, Inc. | Continuous process for the preparation of thermoplastic honeycomb |
| DE19541547A1 (en) * | 1995-11-08 | 1997-05-15 | Interplast Kunststoffe Gmbh | Synthetic profiled barrier sheets for walls of buildings |
| WO2002102592A1 (en) * | 2001-06-15 | 2002-12-27 | Ole-Bendt Rasmussen | Laminates of films and methods and apparatus for their manufacture |
| US20050200062A1 (en) * | 2004-03-12 | 2005-09-15 | Dow Global Technologies, Inc. | Impact absorption structure |
| US20100227116A1 (en) * | 2007-10-17 | 2010-09-09 | Onera | Three-dimensional sheet structure, method for making same, and sandwich-type structural material comprising such structure |
| DE102009018131A1 (en) * | 2009-04-14 | 2010-11-11 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Producing a three-dimensional structural element, comprises spraying a material of the three-dimensional structural element onto a shaping device for forming the three-dimensional structural element in a powdered manner |
| US20150004371A1 (en) * | 2013-06-28 | 2015-01-01 | Noble Environmental Technologies Corporation | Composite structural panels and components |
-
2018
- 2018-06-25 IT IT102018000006605A patent/IT201800006605A1/en unknown
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2518164A (en) * | 1946-07-02 | 1950-08-08 | Leonard S Meyer | Apparatus for producing composite sheet material |
| US3193434A (en) * | 1961-07-12 | 1965-07-06 | Alexander C H Weiss | Decorative architectural panels and method of producing same |
| US3682736A (en) * | 1968-07-18 | 1972-08-08 | Susumu Akamatsu | Method for the continuous manufacture of corrugated cardboards of synthetic resin |
| US4499040A (en) * | 1981-04-20 | 1985-02-12 | Nissen Chemical Industries Co., Ltd. | Production of stamped plastic sheet |
| JPS58224262A (en) * | 1982-06-22 | 1983-12-26 | Yamakin Kogyo Kk | Solar heat energy absorbing panel |
| EP0459223A2 (en) * | 1990-05-31 | 1991-12-04 | BASF Structural Materials, Inc. | Continuous process for the preparation of thermoplastic honeycomb |
| DE19541547A1 (en) * | 1995-11-08 | 1997-05-15 | Interplast Kunststoffe Gmbh | Synthetic profiled barrier sheets for walls of buildings |
| WO2002102592A1 (en) * | 2001-06-15 | 2002-12-27 | Ole-Bendt Rasmussen | Laminates of films and methods and apparatus for their manufacture |
| US20050200062A1 (en) * | 2004-03-12 | 2005-09-15 | Dow Global Technologies, Inc. | Impact absorption structure |
| US20100227116A1 (en) * | 2007-10-17 | 2010-09-09 | Onera | Three-dimensional sheet structure, method for making same, and sandwich-type structural material comprising such structure |
| DE102009018131A1 (en) * | 2009-04-14 | 2010-11-11 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Producing a three-dimensional structural element, comprises spraying a material of the three-dimensional structural element onto a shaping device for forming the three-dimensional structural element in a powdered manner |
| US20150004371A1 (en) * | 2013-06-28 | 2015-01-01 | Noble Environmental Technologies Corporation | Composite structural panels and components |
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