GB1417749A - Plural mould process for producing non-uniform pellicles - Google Patents

Plural mould process for producing non-uniform pellicles

Info

Publication number
GB1417749A
GB1417749A GB3374273A GB3374273A GB1417749A GB 1417749 A GB1417749 A GB 1417749A GB 3374273 A GB3374273 A GB 3374273A GB 3374273 A GB3374273 A GB 3374273A GB 1417749 A GB1417749 A GB 1417749A
Authority
GB
United Kingdom
Prior art keywords
plates
uniform
pattern
pellicles
passage
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
GB3374273A
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.)
Union Carbide Corp
Original Assignee
Union Carbide Corp
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 Union Carbide Corp filed Critical Union Carbide Corp
Publication of GB1417749A publication Critical patent/GB1417749A/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
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00—Producing optical elements, e.g. lenses or prisms
    • B29D11/00009—Production of simple or compound lenses
    • 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
    • B29D11/0074—Production of other optical elements not provided for in B29D11/00009- B29D11/0073

Landscapes

  • Engineering & Computer Science (AREA)
  • Ophthalmology & Optometry (AREA)
  • Health & Medical Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Polymerisation Methods In General (AREA)
  • Polyoxymethylene Polymers And Polymers With Carbon-To-Carbon Bonds (AREA)
  • Physical Vapour Deposition (AREA)
  • Moulding By Coating Moulds (AREA)

Abstract

1417749 Films; non-uniform cross-section UNION CARBIDE CORP 16 July 1973 [17 July 1972] 33742/73 Heading B5B [Also in Division C3] In a process for producing pellicles of non- uniform thickness on the surfaces of mould plates positioned with respect to each other to form a passage therebetween, there is provided a pattern of non-uniform pressure within the passage and/or a pattern of non-uniform temperature on the surface of the plates so that a stream of vapours of p-xylylene monomer directed through the passage is caused to condense and polymerize on at least one of the surfaces in response to the pattern of pressure and/or temperature, to produce on at least one of the surfaces a pellicle of non-uniform thickness, the pattern of the non-uniform thickness in the pellicles being directly proportional to the pattern of the pressure and/or temperature. The non-uniform pressure pattern is primarily created by the configuration of the passage between the plates. One or more of the plates may be rotated. The monomer vapour is obtained by pyrolysis of the p-xylylene; a specific material used is chloro-p-xylylene. Specific arrangements of circular mould plates are shown in Figs. 2, 3 and 4, the pellicles obtained when the plates are rotated have sections as shown in Figs. 2A, 3A and 4A and when the plates are stationary the sections are as shown in Figs. 2B, 3B and 4B.
GB3374273A 1972-07-17 1973-07-16 Plural mould process for producing non-uniform pellicles Expired GB1417749A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US27241972A 1972-07-17 1972-07-17

Publications (1)

Publication Number Publication Date
GB1417749A true GB1417749A (en) 1975-12-17

Family

ID=23039722

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3374273A Expired GB1417749A (en) 1972-07-17 1973-07-16 Plural mould process for producing non-uniform pellicles

Country Status (6)

Country Link
JP (1) JPS5237479B2 (en)
BE (1) BE802393A (en)
FR (1) FR2192903B1 (en)
GB (1) GB1417749A (en)
IT (1) IT991217B (en)
NL (1) NL7309873A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1100615A (en) * 1974-06-29 1981-05-05 Kazuo Totani Liquid crystal electro-optical device
EP1672394B1 (en) * 2004-12-16 2007-04-18 Ecole d'Ingénieurs ARC Method for producing a device having a plastic membrane and device so manufactured

Also Published As

Publication number Publication date
JPS4944044A (en) 1974-04-25
NL7309873A (en) 1974-01-21
FR2192903B1 (en) 1976-06-18
JPS5237479B2 (en) 1977-09-22
IT991217B (en) 1975-07-30
DE2335436B2 (en) 1976-05-06
DE2335436A1 (en) 1974-01-31
BE802393A (en) 1974-01-16
FR2192903A1 (en) 1974-02-15

Similar Documents

Publication Publication Date Title
ES424113A1 (en) Process and method in printing
ES427476A1 (en) Process for preparing a synthetic wood
BE824360A (en) PROCESS FOR MANUFACTURING COMPOSITE STRUCTURES CONSTITUTED BY CELLULOSIC AND POLYMERIC MATERIALS
ES269534U (en) Friction element such as a brake pad
AR202137A1 (en) METHOD FOR PRODUCING A PRODUCT OF GLASS FIBERS AND THE PRODUCT SO OBTAINED
ES418673A1 (en) Composite articles based on heat-resistant resins
JPS54126263A (en) Continous manufacturing of synthetic resin plate
GB1417749A (en) Plural mould process for producing non-uniform pellicles
ES226096U (en) Mobile geometrical form
CH551824A (en) PROCESS FOR FORMING A COMPOSITE MATERIAL OF METAL AND CARBON FIBERS, PRODUCT OBTAINED BY THIS PROCESS AND USE OF THE PRODUCT.
MX162317A (en) CONTINUOUS MANUFACTURING PROCEDURE OF PLATES AND / OR PIECES OF MOLDING OF HYDRAULIC FRAGRED MASSES WITH FIBERS
GB1359002A (en) Process and apparatus for the manufacture of a mat of fibres of thermoplastic material
GB1447145A (en) Method and plant for the production of wall panels
GB1509619A (en) Apparatus for moulding sweetmeats
ES425484A1 (en) Producing products from dry particulate material and a liquid
JPS5234757A (en) Character plate and process for the fabrication thereof
FR2286702A1 (en) Injection moulding article of different materials - by injecting through separate nozzles at independently controlled pressures
JPS52122069A (en) Production of waveguide type band-pass filter
ES379348A1 (en) Procedure for manufacturing wooden sheets. (Machine-translation by Google Translate, not legally binding)
JPS5215632A (en) Process for producing split yarns
JPS53129254A (en) Production of mar-proof synthetic resin molded product
JPS54130667A (en) Breaker plate of extruder
JPS5764515A (en) Continuous molding of glass fiber reinforced laminated plate having uneven pattern on surface
JPS5677905A (en) Disk record
JPS52101021A (en) Piano frame

Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee