GB1515439A - Production of diffusing discs using sheets of glass fibre-filled thermoplastics - Google Patents

Production of diffusing discs using sheets of glass fibre-filled thermoplastics

Info

Publication number
GB1515439A
GB1515439A GB28246/76A GB2824676A GB1515439A GB 1515439 A GB1515439 A GB 1515439A GB 28246/76 A GB28246/76 A GB 28246/76A GB 2824676 A GB2824676 A GB 2824676A GB 1515439 A GB1515439 A GB 1515439A
Authority
GB
United Kingdom
Prior art keywords
glass fibre
sheets
production
filled thermoplastics
diffusing discs
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
Application number
GB28246/76A
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.)
Bayer AG
Original Assignee
Bayer AG
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 Bayer AG filed Critical Bayer AG
Publication of GB1515439A publication Critical patent/GB1515439A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
    • 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
    • B29C70/06—Fibrous reinforcements only
    • B29C70/10—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres
    • B29C70/12—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of short length, e.g. in the form of a mat
    • 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
    • B29D11/00—Producing optical elements, e.g. lenses or prisms
    • B29D11/00605—Production of reflex reflectors

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Composite Materials (AREA)
  • Manufacturing & Machinery (AREA)
  • Ophthalmology & Optometry (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Pens And Brushes (AREA)
  • Braking Arrangements (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Reinforced Plastic Materials (AREA)

Abstract

1515439 Light diffusing discs BAYER AG 7 July 1976 [12 July 1975] 28246/76 Heading F4R [Also in Division C3] Light diffusing discs are made from thermoplastic sheet material having a thickness between 30 Ám. and 1,000 Ám. and a glass fibre content between 20% and 30% by weight.
GB28246/76A 1975-07-12 1976-07-07 Production of diffusing discs using sheets of glass fibre-filled thermoplastics Expired GB1515439A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2531240A DE2531240C2 (en) 1975-07-12 1975-07-12 Process for the production of diffusing light disks

Publications (1)

Publication Number Publication Date
GB1515439A true GB1515439A (en) 1978-06-21

Family

ID=5951383

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28246/76A Expired GB1515439A (en) 1975-07-12 1976-07-07 Production of diffusing discs using sheets of glass fibre-filled thermoplastics

Country Status (13)

Country Link
JP (1) JPS5211046A (en)
AT (1) AT354905B (en)
BE (1) BE843908A (en)
CA (1) CA1068034A (en)
CH (1) CH602314A5 (en)
DE (1) DE2531240C2 (en)
DK (1) DK146776C (en)
FR (1) FR2318020A1 (en)
GB (1) GB1515439A (en)
IT (1) IT1062602B (en)
NL (1) NL185068C (en)
NO (1) NO144623C (en)
SE (1) SE7607826L (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0118951A1 (en) * 1983-03-07 1984-09-19 Koninklijke Philips Electronics N.V. Projection screen
EP1268623A1 (en) * 2000-02-09 2003-01-02 Lexalite International Corporation Lighting fixture employing a partially reflective partially transmittive polymeric reflector
US9334385B2 (en) 2007-09-12 2016-05-10 Bayer Materialscience Ag Thermoplastic comprising metal identification platelets

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2721885C3 (en) * 1977-05-14 1981-12-24 Bayer Ag, 5090 Leverkusen Manufacture of lens diffusers
GB1585338A (en) * 1977-05-14 1981-02-25 Bayer Ag Use of sheets of thermoplastic filled with glass beads for the manufacture of light diffuser plates
JPS57133149A (en) * 1981-02-12 1982-08-17 Idemitsu Kosan Co Ltd Polycarbonate resin composition
DE4424106A1 (en) 1994-07-08 1996-01-11 Bayer Ag Laminates
DE102008051409A1 (en) 2008-10-11 2010-04-15 Bayer Materialscience Ag security element

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1245938B (en) * 1963-11-30 1967-08-03
US3291868A (en) * 1964-07-20 1966-12-13 Owens Corning Fiberglass Corp Production of polarizing elements
DE1544920A1 (en) * 1965-10-08 1969-07-24 Bayer Ag Translucent plastics for lighting purposes
DE1729529A1 (en) * 1968-02-23 1972-02-10 Bayer Ag Process for the production of glass fiber reinforced thermoplastics
DE2118597A1 (en) * 1970-04-21 1971-11-11 Joergensen, Knud, Frederikshavn (Dänemark); r Translucent material

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0118951A1 (en) * 1983-03-07 1984-09-19 Koninklijke Philips Electronics N.V. Projection screen
EP1268623A1 (en) * 2000-02-09 2003-01-02 Lexalite International Corporation Lighting fixture employing a partially reflective partially transmittive polymeric reflector
EP1268623A4 (en) * 2000-02-09 2009-04-29 Spectrus Inc Lighting fixture employing a partially reflective partially transmittive polymeric reflector
US9334385B2 (en) 2007-09-12 2016-05-10 Bayer Materialscience Ag Thermoplastic comprising metal identification platelets

Also Published As

Publication number Publication date
DK146776C (en) 1984-07-16
DE2531240C2 (en) 1984-07-26
AT354905B (en) 1979-02-11
NO144623C (en) 1981-10-07
NO762255L (en) 1977-01-13
BE843908A (en) 1977-01-10
NO144623B (en) 1981-06-29
CH602314A5 (en) 1978-07-31
NL185068C (en) 1990-01-16
FR2318020A1 (en) 1977-02-11
ATA504076A (en) 1979-06-15
FR2318020B1 (en) 1982-05-21
DK146776B (en) 1984-01-02
JPS5211046A (en) 1977-01-27
JPS5629241B2 (en) 1981-07-07
SE7607826L (en) 1977-01-13
DK313376A (en) 1977-01-13
NL185068B (en) 1989-08-16
DE2531240A1 (en) 1977-01-27
NL7607643A (en) 1977-01-14
IT1062602B (en) 1984-10-20
CA1068034A (en) 1979-12-11

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years

Effective date: 19960706