GB1103123A - Process for the production of shaped articles from highly polymeric materials - Google Patents
Process for the production of shaped articles from highly polymeric materialsInfo
- Publication number
- GB1103123A GB1103123A GB2071466A GB2071466A GB1103123A GB 1103123 A GB1103123 A GB 1103123A GB 2071466 A GB2071466 A GB 2071466A GB 2071466 A GB2071466 A GB 2071466A GB 1103123 A GB1103123 A GB 1103123A
- Authority
- GB
- United Kingdom
- Prior art keywords
- melt
- extruder
- particulate material
- polyethylene terephthalate
- terephthalate
- 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.)
- Expired
Links
Classifications
-
- 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
- C08J11/00—Recovery or working-up of waste materials
- C08J11/04—Recovery or working-up of waste materials of polymers
- C08J11/06—Recovery or working-up of waste materials of polymers without chemical reactions
-
- 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
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
-
- 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
-
- 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
-
- 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
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Polyesters Or Polycarbonates (AREA)
Abstract
1,103,123. Extruding polyethylene terephthalate &c. E.I. DU PONT DE NEMOURS & CO. 10 May, 1966 [10 May, 1965], No. 20714/66. Headings B5A and B5B. In a process for extruding highly polymeric material susceptible to hydrolytic and oxidative degradation such as linear polyesters, polycarbonates and in particular polyethylene terephthalate, the polymer in undried particulate form is fed from feeder 19 to extruder 12, which may be a heated twin-screw extruder, to join similar material in melt form which is moving through the extruder in an oxygenfree environment. As shown, blended melt thereafter passes through a filter 13 to a nozzle 14 and the extrudate, which may be a film, is received on a quenching device 15. An oxygen-free environment within extruder 12 is achieved either by applying vacuum to vent 22 or by circulation of a dry inert gas such as nitrogen. According to the invention, degradation, measurable as a decrease in intrinsic viscosity, is further prevented by the flow of melt through the extruder which is derived either from source 10, which may be a continuous polymerization unit or batch autoclave, or from initial melting of particulate material. In either case part of the melt is recycled via conduit 16. With such recycling, polymer from source 10 may only be used initially with subsequent 100% use of particulate material. The particulate material is preferably reclaimed waste and is not necessarily identical to the melt. A further feeder 21 is provided so that additives such as fillers, pigments, metallic particles, delusterants, anti-static agents and flame-retardants may be introduced. Seven examples are given and in one of these the particulate material differs from the melt, viz. a copolyester of ethylene terephthalate/neopentyl terephthalate is added to polyethylene terephthalate. Additives specifically mentioned are silicon dioxide, aluminium powder and a green pigment. Several examples relate to the production of film which may or may not be subsequently stretched.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US45430365A | 1965-05-10 | 1965-05-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1103123A true GB1103123A (en) | 1968-02-14 |
Family
ID=23804102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2071466A Expired GB1103123A (en) | 1965-05-10 | 1966-05-10 | Process for the production of shaped articles from highly polymeric materials |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE680720A (en) |
| DE (1) | DE1554852A1 (en) |
| GB (1) | GB1103123A (en) |
| LU (1) | LU51065A1 (en) |
| NL (1) | NL6606342A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4812413B1 (en) * | 1970-06-16 | 1973-04-20 | ||
| CN112313054A (en) * | 2018-07-03 | 2021-02-02 | 下一代回收机有限公司 | Method for producing a polycondensate melt from a primary material and a secondary material |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL8800904A (en) * | 1988-04-08 | 1989-11-01 | Reko Bv | PROCESS FOR PROCESSING A THERMOPLASTIC POLYCONDENSATION POLYMER |
| DE19722278A1 (en) * | 1997-05-28 | 1998-12-03 | Zimmer Ag | Degassing of hydrolysis sensitive polymers |
-
1966
- 1966-05-09 BE BE680720D patent/BE680720A/xx unknown
- 1966-05-09 DE DE19661554852 patent/DE1554852A1/en active Pending
- 1966-05-10 NL NL6606342A patent/NL6606342A/xx unknown
- 1966-05-10 LU LU51065A patent/LU51065A1/xx unknown
- 1966-05-10 GB GB2071466A patent/GB1103123A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4812413B1 (en) * | 1970-06-16 | 1973-04-20 | ||
| CN112313054A (en) * | 2018-07-03 | 2021-02-02 | 下一代回收机有限公司 | Method for producing a polycondensate melt from a primary material and a secondary material |
| US11472064B2 (en) | 2018-07-03 | 2022-10-18 | Next Generation Recyclingmaschinen Gmbh | Method for producing a polycondensate melt from a first partial melt stream and a second partial melt stream, with increasing or reducing an intrinsic viscosity of the second partial melt |
Also Published As
| Publication number | Publication date |
|---|---|
| LU51065A1 (en) | 1966-11-10 |
| DE1554852A1 (en) | 1970-02-12 |
| NL6606342A (en) | 1966-11-11 |
| BE680720A (en) | 1966-11-09 |
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