MX9602229A - Metodo y aparato para producir una hoja de poliester altamente orientada. - Google Patents
Metodo y aparato para producir una hoja de poliester altamente orientada.Info
- Publication number
- MX9602229A MX9602229A MX9602229A MX9602229A MX9602229A MX 9602229 A MX9602229 A MX 9602229A MX 9602229 A MX9602229 A MX 9602229A MX 9602229 A MX9602229 A MX 9602229A MX 9602229 A MX9602229 A MX 9602229A
- Authority
- MX
- Mexico
- Prior art keywords
- pair
- polyester sheet
- opposed rollers
- rollers
- downstream
- Prior art date
Links
Classifications
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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
- 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
- B29C43/24—Calendering
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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
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
-
- 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
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
- B29C55/04—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique
- B29C55/06—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique parallel with the direction of feed
-
- 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
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
- B29C55/04—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique
- B29C55/06—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique parallel with the direction of feed
- B29C55/065—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique parallel with the direction of feed in several stretching steps
-
- 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
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
- B29C55/18—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets by squeezing between surfaces, e.g. rollers
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- 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
- B29D7/00—Producing flat articles, e.g. films or sheets
- B29D7/01—Films or sheets
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2007/00—Flat articles, e.g. films or sheets
- B29L2007/007—Narrow strips, e.g. ribbons, tapes, bands
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
Un método y aparato para producir una hoja de poliéster altamente orientada que consta de un procedimiento de traccion en dos etapas. La primera etapa de traccion es ejecutada dentro de un conjunto de rodillos de laminado y estiramiento de tipo "cero-hueco", que consta de una pareja de rodillos opuestos que definen una abertura entre ellas, y en que los rodillos son girados en direcciones opuestas a diferentes velocidades de superficie lineal de tal manera que entre los mismos se define una predeterminada proporcion de traccion. La hoja de poliéster amorfo es conducida a través de la abertura de pasada de los rodillos opuestos, y como resultado del laminado y del estiramiento simultáneos de la hoja de poliéster se transforma el poliéster amorfo en poliéster cristalino como resultado de una cristalizacion inducida por orientacion. La hoja de poliéster cristalino es calentada a un nivel por encima de la temperatura de transicion a vidrio (Tg) inmediatamente corriente abajo de la abertura definida entre la pareja de rodillos opuestos, y un conjunto de bridas de salida está dispuesto corriente abajo de la pareja de los rodillos opuestos. Los rodillos del conjunto de bridas giran a velocidades de superficie lineal que son mayores que la velocidad de superficie lineal del ejemplar corriente abajo de la pareja de rodillos opuestos de tal manera que se define una segunda proporcion de traccion con respecto al citado ejemplar corriente abajo de la pareja de rodillos opuestos. El calentamiento de la hoja de poliéster cristalino facilita su estiramiento adicional dentro de la segunda etapa de traccion del aparato, siendo la proporcion de traccion general del orden de 6:1 Se logra así un poliéster altamente orientado que posee valores de fuerza tensil del orden de 7,000 kgs/cm2 así como valores de modulo del orden de 210,000 a 350,000 kgs/cm2.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08485538 | 1995-06-07 | ||
US08/485,538 US5695709A (en) | 1992-10-09 | 1995-06-07 | Method and apparatus for producing highly oriented polyester sheet |
Publications (2)
Publication Number | Publication Date |
---|---|
MX9602229A true MX9602229A (es) | 1997-10-31 |
MXPA96002229A MXPA96002229A (es) | 1998-07-03 |
Family
ID=
Also Published As
Publication number | Publication date |
---|---|
TW325435B (en) | 1998-01-21 |
EP0747200A3 (en) | 1997-04-02 |
CA2176640A1 (en) | 1996-12-08 |
KR970000508A (ko) | 1997-01-21 |
CN1140653A (zh) | 1997-01-22 |
US5695709A (en) | 1997-12-09 |
EP0747200A2 (en) | 1996-12-11 |
JPH08336891A (ja) | 1996-12-24 |
AU5475496A (en) | 1996-12-19 |
IL118108A0 (en) | 1996-09-12 |
AU682634B2 (en) | 1997-10-09 |
KR0185183B1 (ko) | 1999-05-15 |
NZ286727A (en) | 1998-04-27 |
TR199600409A2 (tr) | 1996-12-21 |
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