WO1989004247A1 - Process for producing reinforced thermoplastic sheets and related apparatus - Google Patents
Process for producing reinforced thermoplastic sheets and related apparatus Download PDFInfo
- Publication number
- WO1989004247A1 WO1989004247A1 PCT/IT1988/000080 IT8800080W WO8904247A1 WO 1989004247 A1 WO1989004247 A1 WO 1989004247A1 IT 8800080 W IT8800080 W IT 8800080W WO 8904247 A1 WO8904247 A1 WO 8904247A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- threads
- die
- coated
- movable means
- thermoplastic sheets
- Prior art date
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
- 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
- B29C70/50—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
- B29C70/504—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC] using rollers or pressure bands
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B15/00—Pretreatment of the material to be shaped, not covered by groups B29B7/00 - B29B13/00
- B29B15/08—Pretreatment of the material to be shaped, not covered by groups B29B7/00 - B29B13/00 of reinforcements or fillers
- B29B15/10—Coating or impregnating independently of the moulding or shaping step
- B29B15/12—Coating or impregnating independently of the moulding or shaping step of reinforcements of indefinite length
- B29B15/122—Coating or impregnating independently of the moulding or shaping step of reinforcements of indefinite length with a matrix in liquid form, e.g. as melt, solution or latex
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B15/00—Pretreatment of the material to be shaped, not covered by groups B29B7/00 - B29B13/00
- B29B15/08—Pretreatment of the material to be shaped, not covered by groups B29B7/00 - B29B13/00 of reinforcements or fillers
- B29B15/10—Coating or impregnating independently of the moulding or shaping step
- B29B15/12—Coating or impregnating independently of the moulding or shaping step of reinforcements of indefinite length
- B29B15/14—Coating or impregnating independently of the moulding or shaping step of reinforcements of indefinite length of filaments or wires
-
- 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
- B29C48/05—Filamentary, e.g. strands
-
- 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
- B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
- B29C48/156—Coating two or more articles simultaneously
-
- 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
- B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
- B29C48/335—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles
-
- 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
- B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
- B29C48/154—Coating solid articles, i.e. non-hollow articles
-
- 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
- B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
- B29C48/34—Cross-head annular extrusion nozzles, i.e. for simultaneously receiving moulding material and the preform to be coated
-
- 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
- B29C48/345—Extrusion nozzles comprising two or more adjacently arranged ports, for simultaneously extruding multiple strands, e.g. for pelletising
Definitions
- the invention concerns a process for producing reinforced thermoplastic sheets, particularly sheets reinforced with long or continuous fibres.
- the object of the invention is to provide a process and an apparatus for producing, in less time than s required by traditional processes, reinforced thermoplastic sheets having good characteristics of resistance in every direction
- the outlet holes of the die plate are eccentric with respect to the axis of the single threads; air jets are provided which influence the outgoing threads; the die plate or the movable means have an oscillatory movement.
- composition of the sheet provision may be made to add molten plastics at the pressing or calendering stage. Sheets of coating material can also be added.
- the plastics-coated threads of reinforcement material are prepared by passing the threads of reinforcement material (for example glass fibres) in die plates through which molten plastics is injected and thus surrounds said threads, embedding them in the plastics.
- reinforcement material for example glass fibres
- the apparatus for producing reinforced plastic sheets with the process according to the invention comprises a group of die-plates 5. for the production of the individual coated threads, said group being disposed upstream of a movable means for receiving and removing said coated threads, while a pressing and/or sizing means is provided downstream of said movable means.
- a blower is placed at the exit of at least some of the d e plates, in order to ensure that 10. the threads are arranged at random on the movable means.
- the disorderly arrangement of the threads can be eased by the fact that the die plate has eccentric outlets with respect to the axis of the single threads produced.
- the movable means may be a thermostated rotating roller. In this 15. case the same roller can then cooperate with another thermostated roller forming a calendering arrangement.
- the die plate and/or movable means have an oscillatory movement.
- the proposed invention provides a material which has a uniform 20. resistance in all directions and which can therefore be pressed like a metallic sheet.
- Fig. 1 shows a schematic side view of an apparatus for producing reinforced thermoplastic sheets
- Fig. 2 shows a sectional view of an enlarged detail of the apparatus in figure 1.
- Figure 1 shows an apparatus comprising a group 5 of die-plates that are connected to an extruder 4. Beneath the group 5 a rotating roller 1 is disposed which is in such a position as to receive, and then transversally move, the mass of plastic-coated threads 10. The roller 1 is adjacent to a second counter-rotating roller 2, which in 10. turn is also adjacent, in a substantially diametrically opposite area, to a third roller 3 rotating in the same direction as roller 1.
- the group 5 is made up of a series of die-plates 6 of the type illustrated in figure 2. Each die-plate comprises a tubular member 7
- the tubular member 7 forms a pin 7' that is surrounded by the plastics coming from a frustoconical duct 8. The plastics adhering under pressure to the thread 9 will carry it along with it creating a coated thread 10.
- the passage 7 ' is slightly eccentric with respect
- the group 5 produces a whole series of coated threads 10 that are deposited at random on the roller 1 (figure 1).
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Reinforced Plastic Materials (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT22573A/87 | 1987-11-09 | ||
IT22573/87A IT1223090B (en) | 1987-11-09 | 1987-11-09 | PROCEDURE FOR PRODUCING REINFORCED THERMOPLASTIC SHEETS AND RELATED EQUIPMENT |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1989004247A1 true WO1989004247A1 (en) | 1989-05-18 |
Family
ID=11197988
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IT1988/000080 WO1989004247A1 (en) | 1987-11-09 | 1988-11-07 | Process for producing reinforced thermoplastic sheets and related apparatus |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0395676A1 (en) |
AU (1) | AU2626888A (en) |
IT (1) | IT1223090B (en) |
WO (1) | WO1989004247A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0373115A1 (en) * | 1988-12-09 | 1990-06-13 | Soplar Sa | Extrusion head |
EP0478258A2 (en) * | 1990-09-25 | 1992-04-01 | Sumitomo Rubber Industries Limited | Method and apparatus for fabricating a rubberised steel cord reinforced sheet |
WO1998027250A2 (en) * | 1996-12-17 | 1998-06-25 | Imab Stiftung | Reinforced plastic foil |
DE10127076A1 (en) * | 2001-06-02 | 2003-03-06 | Hartmut Ortlieb | Woven or knitted fabric or yarn arrangement consists of plastic-coated threads or yarns useful for special containers or bags |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1088931A (en) * | 1964-01-10 | 1967-10-25 | Ici Ltd | Continuous filament nonwoven materials |
LU57487A1 (en) * | 1967-12-07 | 1969-03-13 | ||
US3993726A (en) * | 1974-01-16 | 1976-11-23 | Hercules Incorporated | Methods of making continuous length reinforced plastic articles |
FR2443325A1 (en) * | 1978-12-04 | 1980-07-04 | Ppg Industries Inc | PROCESS FOR OBTAINING A LAMINATED SHEET OF THERMOPLASTIC RESIN REINFORCED WITH GLASS FIBERS |
FR2548084A1 (en) * | 1983-06-28 | 1985-01-04 | Ato Chimie | Process for manufacturing composite articles and composite articles obtained |
-
1987
- 1987-11-09 IT IT22573/87A patent/IT1223090B/en active
-
1988
- 1988-11-07 AU AU26268/88A patent/AU2626888A/en not_active Abandoned
- 1988-11-07 EP EP88909607A patent/EP0395676A1/en not_active Withdrawn
- 1988-11-07 WO PCT/IT1988/000080 patent/WO1989004247A1/en not_active Application Discontinuation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1088931A (en) * | 1964-01-10 | 1967-10-25 | Ici Ltd | Continuous filament nonwoven materials |
LU57487A1 (en) * | 1967-12-07 | 1969-03-13 | ||
US3993726A (en) * | 1974-01-16 | 1976-11-23 | Hercules Incorporated | Methods of making continuous length reinforced plastic articles |
FR2443325A1 (en) * | 1978-12-04 | 1980-07-04 | Ppg Industries Inc | PROCESS FOR OBTAINING A LAMINATED SHEET OF THERMOPLASTIC RESIN REINFORCED WITH GLASS FIBERS |
FR2548084A1 (en) * | 1983-06-28 | 1985-01-04 | Ato Chimie | Process for manufacturing composite articles and composite articles obtained |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0373115A1 (en) * | 1988-12-09 | 1990-06-13 | Soplar Sa | Extrusion head |
EP0478258A2 (en) * | 1990-09-25 | 1992-04-01 | Sumitomo Rubber Industries Limited | Method and apparatus for fabricating a rubberised steel cord reinforced sheet |
EP0478258A3 (en) * | 1990-09-25 | 1992-04-29 | Sumitomo Rubber Industries Limited | Method and apparatus for fabricating a rubberised steel cord reinforced sheet |
US5171502A (en) * | 1990-09-25 | 1992-12-15 | Sumitomo Rubber Industries Ltd. | Method and apparatus for fabricating a rubberized wire sheet |
WO1998027250A2 (en) * | 1996-12-17 | 1998-06-25 | Imab Stiftung | Reinforced plastic foil |
WO1998027250A3 (en) * | 1996-12-17 | 1998-09-03 | Imab Stiftung | Reinforced plastic foil |
DE10127076A1 (en) * | 2001-06-02 | 2003-03-06 | Hartmut Ortlieb | Woven or knitted fabric or yarn arrangement consists of plastic-coated threads or yarns useful for special containers or bags |
Also Published As
Publication number | Publication date |
---|---|
EP0395676A1 (en) | 1990-11-07 |
IT8722573A0 (en) | 1987-11-09 |
AU2626888A (en) | 1989-06-01 |
IT1223090B (en) | 1990-09-12 |
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