Methods and apparatus for introducing air-entrainable material into a channel or recess

(19)

(11)

EP 0 841 444 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	18.11.1998 Bulletin 1998/47

(43)	Date of publication A2:
	13.05.1998 Bulletin 1998/20

(21)	Application number: 97308886.7

(22)	Date of filing: 05.11.1997

(51)	International Patent Classification (IPC)⁶: E04F 21/08

(84)	Designated Contracting States:
	AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
	Designated Extension States:
	AL LT LV MK RO SI

(30)

Priority:

07.11.1996 GB 9623201
22.04.1997 GB 9708117

(71)	Applicant: Excel Industries Limited
	Gwent NP3 5SD (GB)

(72)	Inventor:
	Leaver, Roger John Monmouth, Gwent NP5 3HT (GB)

(74)	Representative: Newell, William Joseph et al
	Wynne-Jones, Lainé & James 22 Rodney Road Cheltenham Gloucestershire GL50 1JJ Cheltenham Gloucestershire GL50 1JJ (GB)

(54)	Methods and apparatus for introducing air-entrainable material into a channel or recess

(57) A method of introducing insulating material or other air-entrainable material into an open recess or channel e.g. in a panel frame 59, includes applying to said recess or channel a filling head means 54 having a cover plate means 74 associated therewith, thereby temporarily to cover said recess locally to define a local cavity. A blown mixture of air and insulating material or other air-entrainable material is introduced into the cavity from the filling head means whilst leakage of the insulating material or other air-entrainable material is prevented. This is typically achieved by providing an extended cover plate such that the accumulated friction between the air-entrainable material and the cover plate and the walls of the recess is sufficient to prevent or substantially reduce leakage. The recess or channel is caused to move relative to said filling head means 54, progressively to fill said recess or channel.

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