EP0165981A1 - Feuille de plastique avec surface a brillant nacre et procede de fabrication - Google Patents

Feuille de plastique avec surface a brillant nacre et procede de fabrication

Info

Publication number
EP0165981A1
EP0165981A1 EP85900449A EP85900449A EP0165981A1 EP 0165981 A1 EP0165981 A1 EP 0165981A1 EP 85900449 A EP85900449 A EP 85900449A EP 85900449 A EP85900449 A EP 85900449A EP 0165981 A1 EP0165981 A1 EP 0165981A1
Authority
EP
European Patent Office
Prior art keywords
polycarbonate
screw
polymethyl methacrylate
extruder
plastic film
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.)
Withdrawn
Application number
EP85900449A
Other languages
German (de)
English (en)
Inventor
Johannes Matthiesen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MATTHIESEN Gerda
Original Assignee
MATTHIESEN Gerda
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by MATTHIESEN Gerda filed Critical MATTHIESEN Gerda
Publication of EP0165981A1 publication Critical patent/EP0165981A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
    • C08L33/04—Homopolymers or copolymers of esters
    • C08L33/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, which oxygen atoms are present only as part of the carboxyl radical
    • C08L33/10—Homopolymers or copolymers of methacrylic acid esters
    • C08L33/12—Homopolymers or copolymers of methyl methacrylate
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates
    • 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
    • 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
    • B29K2069/00—Use of PC, i.e. polycarbonates 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

Definitions

  • the invention relates to new plastic films with a mother-of-pearl glossy surface souia to a process for their production.
  • DE-AS 16 94 748 a content of 0.5 to 10% of non-porous, crystalline silica plastic films are known which, by means of this filler additive, have the desired degree of gloss / opacity / used, for example, for blueprint paper. Transparency. From DE-AS 11 67 232 it is known to use glass platelets of certain small thickness and length as mother-of-pearl pigments in plastic moldings. The trade also offers specific pearlescent and mother-of-pearl pigments that can be used for plastic molding compounds.
  • films and sheets are required that, in addition to good mechanical properties such as resistance to fracture and cracking and good elastic properties, must have very good resistance to heat and weathering.
  • Polycarbonates are thermoplastic materials that largely meet these requirements and that have already been improved with regard to one or the other property by adding other plastics.
  • Plastic molding compositions are already known which contain acrylic acid ester polymers or copolymers in addition to polycarbonate.
  • DE-OS 23 03 190 suggests modified polycarbonate resin compositions which, to improve mechanical properties, in particular the impact strength of the polycarbonate plastic compositions, contain an addition of 1 to 20% of rubber-like polyalkylacrylate elastomers.
  • DE-OS 23 20 786 also describes polycarbonate resin compositions with increased impact strength, which have an addition of 3 to 35% by weight of a polyacrylate elastomer.
  • From DE-PS 22 64 268 polycarbonate molding compositions are known, their melt viscosity is reduced and their pressing and molding properties are improved by the fact that in the molding composition 0.01 to 50 wt .-%. are present on a special acrylic polymer with 90-75% by weight methyl methacrylate units and 10-25% by weight alkyl acrylate units.
  • both constituents, the polycarbonate and the acrylic copolymers are present in single phase, dissolved in one another, and crystal-clear plates and articles are obtained therefrom.
  • the invention has for its object to provide a plastic film which, in addition to excellent mechanical properties, high abrasion resistance and very good resistance to weathering, keeps its own pearlescent surface gloss unchanged over a practically unlimited period of use.
  • Claims 4 and 5 claim a method for producing films according to the invention.
  • the starting components, the PMMA and the PC are mixed thoroughly with one another in the desired proportion in the form of commercially available granules.
  • a premix can be made in a paddle or paddle mixer.
  • the thoroughly dried and premixed material is then subjected to a melt mixing process at temperatures between 260 and 300 ° C in the extruder and very quickly sent through the extruder with the highest possible mixing intensity.
  • the mix remains two-phase despite the practically molecular-disperse mixing; one phase is finely divided in the other phase, and if the plasticized mass is removed by the extrusion tool, for example a slot die, the film is obtained in which the components form a kind of solidified emulsion.
  • films according to the invention have pearl mother-of-pearl shine and, if the mix additionally contains a commercially available soluble, transparent coloring dye, show a pearlescent-like bright color that is always clearly recognizable from all viewing angles. There is no glare even from extreme angles and the color is always silky.
  • the polymethyl methacrylates and polycarbonates which can be used for the purposes of the invention are commercial products which are supplied as granules.
  • the materials to be mixed according to the invention must be dry.
  • the usual commercial granules are therefore carefully pre-dried so that any residual moisture that may be present is removed from the material, otherwise there is a risk that the finished films will have bubbles or other defects.
  • the extruder is expediently provided with a degassing device.
  • Soluble, transparent coloring dyes can be added to the mix for coloring. Depending on the color and color density, it is advisable to add about 1.2 to 1.5% by weight of dye. Such dyes are expediently used which show good lightfastness. Dyes of this type are available as commercial products. There are already colored granules on the market; they can be processed in the same way as undyed granules. For example:
  • PMMA Polymethyl methacrylate
  • PC polycarbonate
  • Makrolon 3103 commercial product Makrolon 3103 from Bayer
  • the screw cylinder of the extruder had heating and cooling devices and at the end of the cylinder opposite the filling funnel a wide injection head or a slot nozzle as an extrusion tool, which is followed by the cooling device, smoothing and take-off rolls, winding or cutting and stacking device in the usual way. Because of the slight transverse shrinkage of the film, a slot die with a slot width of 550 mm was used, so that the width of the finished film was slightly more than 500 mm.
  • the screw barrel was heated to and maintained at a temperature of 280 ° C and the processed material was passed through the extruder at a throughput rate which precluded burning of the material by overheating and at a peripheral speed of the screw of about 40 m / min.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)

Abstract

Feuille de plastique avec surface à brillant nacré, formée de polycarbonate et de polyméthacrylate de méthyle sans charge.
EP85900449A 1983-12-24 1984-12-22 Feuille de plastique avec surface a brillant nacre et procede de fabrication Withdrawn EP0165981A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3347328 1983-12-24
DE3347328A DE3347328C2 (de) 1983-12-24 1983-12-24 Kunststoff-Folie mit perlmuttartig glänzender Oberfläche, sowie Verfahren zu deren Herstellung und Verwendung

Publications (1)

Publication Number Publication Date
EP0165981A1 true EP0165981A1 (fr) 1986-01-02

Family

ID=6218309

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85900449A Withdrawn EP0165981A1 (fr) 1983-12-24 1984-12-22 Feuille de plastique avec surface a brillant nacre et procede de fabrication

Country Status (4)

Country Link
EP (1) EP0165981A1 (fr)
AU (1) AU3832185A (fr)
DE (1) DE3347328C2 (fr)
WO (1) WO1985002855A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4745029A (en) * 1986-10-06 1988-05-17 General Electric Company Transparent blends of polymethyl methacrylate and BPA polycarbonate
AU8218787A (en) * 1987-01-02 1988-07-07 Mobil Oil Corp. Method for making turbid and pearlescent polymer films from incompatible polymer mixtures
DE4040203A1 (de) * 1990-12-15 1992-06-17 Roehm Gmbh Eingetruebte kunststoffelemente
CN109054252B (zh) * 2018-08-10 2021-01-26 广东金斯迪新材料科技有限公司 一种汽车膜及其制备方法
CN113150332B (zh) * 2021-01-23 2024-01-09 南昌诚鑫包装有限公司 一种幻彩珠光聚乙烯膜的制造方法
CN114393758B (zh) * 2022-01-18 2024-01-26 北京华夏理想证章有限公司 一种压铸仿真翠玉纹理帽徽制备方法
CN114773819B (zh) * 2022-03-28 2023-09-26 上海金发科技发展有限公司 一种pc/abs复合材料及其制备方法和应用

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2798258A (en) * 1953-03-18 1957-07-09 British Celanese Process of extruding sheets
NL280374A (fr) * 1961-07-03 1900-01-01
GB1182807A (en) * 1967-08-03 1970-03-04 Ici Ltd Thermoplastic Polymeric Compositions
DE1964882B2 (de) * 1968-12-27 1972-01-27 Hitachi Chemical Co , Ltd , Tokio Verfahren zur herstellung von beschreib und bedruckbaren folien aus synthetischen harzen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8502855A1 *

Also Published As

Publication number Publication date
DE3347328A1 (de) 1985-07-04
WO1985002855A1 (fr) 1985-07-04
AU3832185A (en) 1985-07-12
DE3347328C2 (de) 1997-05-15

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB LI LU NL SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19851127

RIN1 Information on inventor provided before grant (corrected)

Inventor name: MATTHIESEN, JOHANNES