IT1103150B - PROCEDURE FOR PRODUCING THERMOPLASTIC SHEETS THAT SPREAD LIGHT - Google Patents
PROCEDURE FOR PRODUCING THERMOPLASTIC SHEETS THAT SPREAD LIGHTInfo
- Publication number
- IT1103150B IT1103150B IT49314/78A IT4931478A IT1103150B IT 1103150 B IT1103150 B IT 1103150B IT 49314/78 A IT49314/78 A IT 49314/78A IT 4931478 A IT4931478 A IT 4931478A IT 1103150 B IT1103150 B IT 1103150B
- Authority
- IT
- Italy
- Prior art keywords
- procedure
- thermoplastic sheets
- producing thermoplastic
- spread light
- spread
- 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
- B29C70/58—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising fillers only, e.g. particles, powder, beads, flakes, spheres
- B29C70/585—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising fillers only, e.g. particles, powder, beads, flakes, spheres incorporation of light reflecting filler, e.g. lamellae to obtain pearlescent effet
-
- 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
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/54—Accessories
- G03B21/56—Projection screens
- G03B21/60—Projection screens characterised by the nature of the surface
- G03B21/62—Translucent screens
-
- 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
- B29K2709/00—Use of inorganic materials not provided for in groups B29K2703/00 - B29K2707/00, for preformed parts, e.g. for inserts
- B29K2709/08—Glass
-
- 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
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0018—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular optical properties, e.g. fluorescent or phosphorescent
- B29K2995/0031—Refractive
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Ophthalmology & Optometry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Optical Elements Other Than Lenses (AREA)
- Laminated Bodies (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19772721885 DE2721885C3 (en) | 1977-05-14 | 1977-05-14 | Manufacture of lens diffusers |
DE19772755088 DE2755088A1 (en) | 1977-12-10 | 1977-12-10 | Thermoplastic sheet material contg. glass beads - used to make light diffusing plate |
Publications (2)
Publication Number | Publication Date |
---|---|
IT7849314A0 IT7849314A0 (en) | 1978-05-12 |
IT1103150B true IT1103150B (en) | 1985-10-14 |
Family
ID=25772023
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT49314/78A IT1103150B (en) | 1977-05-14 | 1978-05-12 | PROCEDURE FOR PRODUCING THERMOPLASTIC SHEETS THAT SPREAD LIGHT |
Country Status (8)
Country | Link |
---|---|
JP (1) | JPS53141642A (en) |
CH (1) | CH635440A5 (en) |
DK (1) | DK209878A (en) |
FR (1) | FR2390265B1 (en) |
GB (1) | GB1585338A (en) |
IT (1) | IT1103150B (en) |
NL (1) | NL7805193A (en) |
SE (1) | SE7805406L (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2539491Y2 (en) * | 1991-10-09 | 1997-06-25 | 惠和商工株式会社 | Light diffusion sheet material |
JPS6177802A (en) * | 1984-09-26 | 1986-04-21 | Teijin Chem Ltd | Molding for light diffusion and transmission |
JPH0963329A (en) * | 1995-08-30 | 1997-03-07 | Minnesota Mining & Mfg Co <3M> | Reflection sheet for liquid-crystal backlight |
US9359489B2 (en) | 2011-08-08 | 2016-06-07 | Covestro Deutschland Ag | Polymer composition having a filler content and coextruded sheet obtainable therefrom |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR959731A (en) * | 1950-04-04 | |||
FR1098128A (en) * | 1954-01-07 | 1955-07-18 | Method and device for combined images | |
GB1436696A (en) * | 1971-12-23 | 1976-05-19 | Bakelite Xylonite Ltd | Sheet materials |
DE2359060B2 (en) * | 1973-11-27 | 1978-03-02 | Alkor Gmbh, 8000 Muenchen | Matt and scratch-resistant films or sheets and processes for their manufacture |
DE2531240C2 (en) * | 1975-07-12 | 1984-07-26 | Bayer Ag, 5090 Leverkusen | Process for the production of diffusing light disks |
DE2534188C2 (en) * | 1975-07-31 | 1990-08-23 | Basf Ag, 6700 Ludwigshafen | Molded parts with smooth surfaces made of glass fiber reinforced plastics |
-
1978
- 1978-05-10 GB GB18675/78A patent/GB1585338A/en not_active Expired
- 1978-05-11 SE SE7805406A patent/SE7805406L/en unknown
- 1978-05-12 NL NL7805193A patent/NL7805193A/en not_active Application Discontinuation
- 1978-05-12 DK DK209878A patent/DK209878A/en not_active Application Discontinuation
- 1978-05-12 IT IT49314/78A patent/IT1103150B/en active
- 1978-05-12 JP JP5572578A patent/JPS53141642A/en active Pending
- 1978-05-12 FR FR7814327A patent/FR2390265B1/fr not_active Expired
- 1978-05-16 CH CH530478A patent/CH635440A5/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
NL7805193A (en) | 1978-11-16 |
IT7849314A0 (en) | 1978-05-12 |
DK209878A (en) | 1978-11-15 |
FR2390265B1 (en) | 1983-02-25 |
CH635440A5 (en) | 1983-03-31 |
FR2390265A1 (en) | 1978-12-08 |
JPS53141642A (en) | 1978-12-09 |
GB1585338A (en) | 1981-02-25 |
SE7805406L (en) | 1978-11-15 |
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