(19)
(11) EP 0 328 823 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
10.01.1990 Bulletin 1990/02

(43) Date of publication A2:
23.08.1989 Bulletin 1989/34

(21) Application number: 88311844.0

(22) Date of filing: 14.12.1988
(51) International Patent Classification (IPC)4: E06B 3/66
(84) Designated Contracting States:
CH DE FR GB IT LI SE

(30) Priority: 14.12.1987 US 132557

(71) Applicant: LAUREN MANUFACTURING COMP.
New Philadelphia, OH 44663 (US)

(72) Inventor:
  • Reichert, Gerhard
    Ottawa, Ontario K2A 2A8 (CA)

(74) Representative: Smith, Philip Antony et al
REDDIE & GROSE 16 Theobalds Road
London WC1X 8PL
London WC1X 8PL (GB)


(56) References cited: : 
   
       


    (54) Multiple-layer sealed glazing unit


    (57) A hollow-profile spacer 30A has faces 27 which engage the glazing panes and can be bent to form a rectangular frame. The inner face 32 is perforated at 29 to allow dessicant material within the hollow profile to absorb moisture from within the space between the glazing panes.
    The spacer is roll-formed from a flat strip of oriented thermoplastic material whose edges are welded together along the line 28. The material is highly-oriented in the longitudinal direction 34 which improves strength, stiffness and dimensional stability in this direction. It also reduces thermal conduct­ivity in the transverse direction 33. The sheet may be biaxially oriented so that it has dead bend properties both parallel (34) and normal (33) to the longitudinal axis of the spacer.
    Alternatively the orientation of the material is achieved by drawing in the course of producing the spacer by extrusion.







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