(19)
(11) EP 0 261 929 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
22.03.1989 Bulletin 1989/12

(43) Date of publication A2:
30.03.1988 Bulletin 1988/13

(21) Application number: 87308377.8

(22) Date of filing: 22.09.1987
(51) International Patent Classification (IPC)4: B65B 7/16, B65B 55/14
(84) Designated Contracting States:
AT BE CH DE ES FR GB IT LI LU NL SE

(30) Priority: 23.09.1986 GB 8622906
09.10.1986 GB 8624210

(71) Applicant: KEYES (U.K.) LIMITED
Skelmersdale Lancashire (GB)

(72) Inventor:
  • Jones, Arthur Neville
    Jordans Buckinghamshire (GB)

(74) Representative: Thiemann, Peter Albert William et al
LLOYD WISE, TREGEAR & CO. Norman House 105-109 Strand
London WC2R 0AE
London WC2R 0AE (GB)


(56) References cited: : 
   
       


    (54) Improvements in or relating to packaging


    (57) A process is disclosed for packaging a food product in a container (1) formed of or lined with a heat-resistant thermoplastics. The container is closed by sealing to the container a lidding material (12) which is permeable to water and gas but impermeable to bacteria, such as so-called "medical paper". The food product can then be sterilized or pasteurised by heat-treatment and the lidding material is then covered by a barrier layer which is impermeable to moisture or permits controlled moisture permeability. The lidding material and barrier material are applied by heat-sealing techniques and the final package may be irradiated to sterilize the head space between the lidding and barrier layers.







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