DE2162174A1 - Laminated panels - with surface layers of plastic made by moulding additional flow channels in core - Google Patents
Laminated panels - with surface layers of plastic made by moulding additional flow channels in coreInfo
- Publication number
- DE2162174A1 DE2162174A1 DE19712162174 DE2162174A DE2162174A1 DE 2162174 A1 DE2162174 A1 DE 2162174A1 DE 19712162174 DE19712162174 DE 19712162174 DE 2162174 A DE2162174 A DE 2162174A DE 2162174 A1 DE2162174 A1 DE 2162174A1
- Authority
- DE
- Germany
- Prior art keywords
- flow channels
- core
- surface layers
- additional flow
- plastic made
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
Classifications
-
- 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
- B29D99/00—Subject matter not provided for in other groups of this subclass
- B29D99/001—Producing wall or panel-like structures, e.g. for hulls, fuselages, or buildings
- B29D99/0021—Producing wall or panel-like structures, e.g. for hulls, fuselages, or buildings provided with plain or filled structures, e.g. cores, placed between two or more plates or sheets, e.g. in a matrix
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- 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
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/42—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
- B29C70/46—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using matched moulds, e.g. for deforming sheet moulding compounds [SMC] or prepregs
- B29C70/48—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using matched moulds, e.g. for deforming sheet moulding compounds [SMC] or prepregs and impregnating the reinforcements in the closed mould, e.g. resin transfer moulding [RTM], e.g. by vacuum
-
- 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
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
- B29C70/546—Measures for feeding or distributing the matrix material in the reinforcing structure
- B29C70/547—Measures for feeding or distributing the matrix material in the reinforcing structure using channels or porous distribution layers incorporated in or associated with the product
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Laminated Bodies (AREA)
Abstract
Description
3 e s c h r e i b u n g des "Verfahrens zur Herstellung von Verbundelementen mit Deckschichten aus härtbaren Kunststoffen durch Anbringung zusätzlicher Fliesakanälen mit 4 Patentansprüchen.3 e s c h r e i b u n g of the "Process for the production of composite elements with cover layers made of hardenable plastics by attaching additional tile channels with 4 claims.
Zweck der Erfindung ist es, ebene oder verformte Verbundelemente rationell herzustellen.The purpose of the invention is to rationalize flat or deformed composite elements to manufacture.
Derartige Elemente werden zur Zeit nach folgenden Verfahren hergestellt: 1) Nassbeschichtungsverfahren, bei welchem die Herstellung der Deckschichten gleichzeitig die Verklebung mit den Kernlagen bewirkt.Such elements are currently manufactured using the following processes: 1) Wet coating process, in which the production of the top layers at the same time causes the adhesion to the core layers.
Dieses Verfahren ist unterteilt in: 1 a) Verwendung geschnittener und/oder gewebter Glasfasern mit flüssigen, härtbaren Kunststoffen. So erfolgt die Aushärtung bei Raumtemperatur oder durch Zuführung von Wärme.This procedure is divided into: 1 a) Using cut and / or woven glass fibers with liquid, hardenable plastics. This is how the Curing at room temperature or by applying heat.
1 b) Verwendung von Glasfasern, welche mit härtbaren Kunst stoffen vorimprägniert sind. Die Aushärtung erfolgt durch Zuführung von Wärme.1 b) Use of glass fibers, which materials with curable plastic are pre-impregnated. The hardening takes place through the application of heat.
2) Klebverfahren, wobei die Deckschichten vorfabriziert werden und zu einem späteren Zeitpunkt mit den Kernlagen verklebt werden.2) Bonding process, whereby the cover layers are prefabricated and to be glued to the core layers at a later point in time.
38 Scbäumverfahren, wobei die vorfabrizierten Deckschichten durch das AuSbringen flüssiger Schaumsysteme durch die Aushärtung derselben miteinander verbunden werden.38 foaming process, whereby the prefabricated cover layers through the application of liquid foam systems by curing them together get connected.
4) Handauflegeverfahren, bei welchem die Kernlagen manuell mit verstärkten, härtbaren Kunststoffen beschichtet werden.4) Hand lay-up process, in which the core layers are manually reinforced with hardenable plastics are coated.
5) lnjektionsverfahren, wobei die Kernlage mit dem trockenen Verstärkungsmaterial ummantelt st. Nachdem diese Kernlage in eine mehrteilige, allseits geschlossene Form eingebracht ist, wird der flüssige, härtbare Kunststoff durch eine oder mehrere Düsen unter Druck in die Form injiziert.5) Injection process, with the core layer with the dry reinforcement material encased st. After this core situation in a multi-part, closed on all sides Form is introduced, the liquid, curable plastic is through one or more Nozzles injected into the mold under pressure.
6) Vakuum-Injektionsverfahren, unterscheidet sich von Nr. 5 dadurch, dass an der--oberen Formseite Vakuum angelegt wird und die Injektion an der unteren Seite erfolgt - Bild 1 -Bei vorgenannter Erfindung wird im Prinzip von dem unter 6) genannten Verfahren ausgegangen.6) Vacuum injection method, differs from No. 5 in that that vacuum is applied to the upper side of the mold and the injection to the lower Page takes place - Figure 1 - In the above-mentioned invention is in principle of the below 6) was assumed.
Der wesentliche Unterschied, welcher den wirtschaftlichen Vorteil der Erfindung deutlich macht liegt darin, dass bei dem unter 6) genannten Verfahren die Tränkungsgeschwindigkeit mit zunehmender Tränkungshdhe abnimmt. Dies ist darauf zuückzuführen, dass das Verstärkungsmaterial (z.B. Glasfasermatten) dem relativ hochviskosen, härtbaren Kunststoff Reibungswiederstand entgegensetzt. So beträgt die Tränkungszeit für eine cB.The main difference, which is the economic advantage the invention makes it clear that in the method mentioned under 6) the impregnation speed decreases with increasing impregnation height. This is upon it attributable to the fact that the reinforcement material (e.g. glass fiber mats) is relative to the highly viscous, hardenable plastic opposes frictional resistance. So amounts the soaking time for a cB.
1 mm starke Beschichtung bei Verwendung einer 450 gr/m2 schweren handelsüblichen Glasfasermatte und einem Tränkweg von 2200 mm bei einer Viskosität des-verwendeten, ungesättigten Polyesterharzes von 800 cP/200C, 34 Minuten.1 mm thick coating when using a 450 g / m2 commercially available Glass fiber mat and an impregnation path of 2200 mm with a viscosity of the used, unsaturated polyester resin of 800 cP / 200C, 34 minutes.
Als Kornmaterial war Sperrholz von 19,mm Stärke eingesetzt Gegenüber diesem Verfahren hat die Erfindung den Vorteil, dass durch die Anbringung von Fliesskanälen in das Kernmaterial parallel zur Fliessrichtung die Tränkúngszeit wesentlich reduziert wird, - Bild 2 - . So wird die Tränkungszeit bei gleichen Bedingungen auf 8 Minuten reduziert, wenn Fliesskanäle von 1,5 x 1,5 mm im Abstand von 80 mm angebracht werden. Da die Härtungszeit z.-B-. bei ungesättigten Polyesterharzen bei Raumtemperatur doppelt so lange ist wie die Verarbeitungszeit, ergibt sich aus vorgenannten Beispielen folgender Zeitaufwand: 1. Ohne Fliesskanäle: Ver'arbeitungszeit: 34 Minuten Härtungszeit: 70 Minuten Entformzeit (EZ>: 104 Minuten 2. Mit Fliesskanälen: Verarbeitungszeit: 8 Minuten Härtungszeit: 16 Minuten Entformzeit (EZ): 24 Minuten Diese Werte haben nur Gültigkeit bei vorgenannter Anordnung, da die freiwerdende Exothermwärme bei Sperrholz als Kernmaterial und einer Beschichtungsstärke von ca. 1 mm abgeleitet wird und djas,ha,lb die Härtungszeit kaum positiv beeinflusst wird. Durch veränderte Schichtstärken und Kernmaterialien mit anderen Wärmeleitzahlen ändern sich auch die Entformzeiten.Plywood with a thickness of 19 mm was used as the grain material The invention has the advantage of this method that by attaching of flow channels in the core material parallel to the direction of flow is the soaking time is significantly reduced - Fig. 2 -. So the soaking time will be under the same conditions Reduced to 8 minutes if flow channels of 1.5 x 1.5 mm at a distance of 80 mm be attached. Since the hardening time e.g. with unsaturated polyester resins is twice as long as the processing time at room temperature, results from The above-mentioned examples take the following time: 1. Without flow channels: Processing time: 34 minutes curing time: 70 minutes demoulding time (EZ>: 104 minutes 2. With flow channels: Processing time: 8 minutes. Curing time: 16 minutes. Demoulding time (EZ): 24 minutes These values are only valid with the aforementioned arrangement, since the one that is released Exothermic heat with plywood as the core material and a coating thickness of approx. 1 mm is derived and djas, ha, lb the curing time is hardly influenced positively. Due to changed layer thicknesses and core materials with different thermal conductivity values the demolding times also change.
Da vorgenanntes- Beispiel für das Rauptverwendungsgebiet wie Containerwände und dächer, utzfahrzeugaufbauten sowie grossformatige Schalungselemente typisc' ist, mäss auch die in' dem Beispiel angeführte Entformzeit miteinander verglichen werden: Entformzeit 1. : Entformzeit 2. = = 104 2 24 Minuten Der Vorteil der Erfindung ist also darin zu sehen, dass bei der gleichen Anzahl von Vorrichtungen und Formen die vielfache Kapazität möglich ist.The aforementioned example for the main area of use such as container walls and roofs, commercial vehicle superstructures and large-format formwork elements typically is, the demolding times given in the example must also be compared with one another will: Demolding time 1.: Demolding time 2. = = 104 2 24 minutes Der The advantage of the invention is therefore to be seen in the fact that with the same number of Devices and forms the multiple capacity is possible.
Da die Anbringung der Fliesskanäle bei Verwendung einer sogenannten "Vielblatt-Kreissäge" nicht aufwendig ist, die Verbin dung zwischen Kernmaterial und Deokschichten durch die mechanische Verankerung Jedoch wesentlich verbessert wird, ergibt sich auch hierdurch ein zusätzlicher Vorteil für die Errindung.Since the attachment of the flow channels when using a so-called "Multi-blade circular saw" is not expensive, the connec tion between the core material and de-icing layers due to the mechanical anchoring, however, significantly improved This also results in an additional advantage for the invention.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19712162174 DE2162174A1 (en) | 1971-12-15 | 1971-12-15 | Laminated panels - with surface layers of plastic made by moulding additional flow channels in core |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19712162174 DE2162174A1 (en) | 1971-12-15 | 1971-12-15 | Laminated panels - with surface layers of plastic made by moulding additional flow channels in core |
Publications (1)
Publication Number | Publication Date |
---|---|
DE2162174A1 true DE2162174A1 (en) | 1973-06-28 |
Family
ID=5828037
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19712162174 Pending DE2162174A1 (en) | 1971-12-15 | 1971-12-15 | Laminated panels - with surface layers of plastic made by moulding additional flow channels in core |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE2162174A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0343736A2 (en) * | 1988-05-23 | 1989-11-29 | Shell Internationale Researchmaatschappij B.V. | Process for reducing mould cycle time |
EP0348831A2 (en) * | 1988-06-29 | 1990-01-03 | Weigel, Angela | Method and apparatus for producing moulded parts from curable plastic material |
EP0517416A1 (en) * | 1991-06-01 | 1992-12-09 | British Aerospace Public Limited Company | Resin flow in the manufacture of fibre reinforced composite structures |
EP0909845A1 (en) * | 1997-08-04 | 1999-04-21 | Toray Industries, Inc. | A woven carbon fiber fabric, a fiber reinforced plastic molding obtained by using the woven fabric, and a production method of the molding |
-
1971
- 1971-12-15 DE DE19712162174 patent/DE2162174A1/en active Pending
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0343736A2 (en) * | 1988-05-23 | 1989-11-29 | Shell Internationale Researchmaatschappij B.V. | Process for reducing mould cycle time |
EP0343736A3 (en) * | 1988-05-23 | 1991-10-09 | Shell Internationale Researchmaatschappij B.V. | Process for reducing mould cycle time |
EP0348831A2 (en) * | 1988-06-29 | 1990-01-03 | Weigel, Angela | Method and apparatus for producing moulded parts from curable plastic material |
EP0348831A3 (en) * | 1988-06-29 | 1991-07-24 | Weigel, Angela | Method and apparatus for producing moulded parts from curable plastic material |
EP0517416A1 (en) * | 1991-06-01 | 1992-12-09 | British Aerospace Public Limited Company | Resin flow in the manufacture of fibre reinforced composite structures |
EP0909845A1 (en) * | 1997-08-04 | 1999-04-21 | Toray Industries, Inc. | A woven carbon fiber fabric, a fiber reinforced plastic molding obtained by using the woven fabric, and a production method of the molding |
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