| (19) |
 |
|
(11) |
EP 0 479 404 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
29.04.1992 Bulletin 1992/18 |
| (43) |
Date of publication A2: |
|
08.04.1992 Bulletin 1992/15 |
| (22) |
Date of filing: 21.03.1991 |
|
| (51) |
International Patent Classification (IPC)5: C11D 17/04 |
|
| (84) |
Designated Contracting States: |
|
CH DE ES FR GB IT LI NL SE |
| (30) |
Priority: |
03.10.1990 GB 9021516
|
| (71) |
Applicants: |
|
- UNILEVER PLC
London EC4P 4BQ (GB)
GB
- UNILEVER N.V.
NL-3013 AL Rotterdam (NL)
CH DE ES FR IT LI NL SE
|
|
| (72) |
Inventors: |
|
- Savill, Derek Guy,
Unilever Research
Wirral,
Merseyside L63 3JW (GB)
- Wagner, John Duncan,
Unilever Research
Wirral,
Merseyside L63 3JW (GB)
|
| (74) |
Representative: Fransella, Mary Evelyn et al |
|
Unilever PLC
Patent Division
Colworth House
Sharnbrook
Bedford MK44 1LQ
Bedford MK44 1LQ (GB) |
|
| |
|
| (54) |
Packaging film and sachet product |
(57) A composite packaging film, capable of dispersing in lightly agitated water substantially
without visible residues, comprises a continuous water-soluble base film, for example,
polyvinyl alcohol, carrying on one or both surfaces a discontinuous, at least partially
non-particulate layer of a second plastics material less water-soluble than the base
film material, for example, nitrocellulose. The discontinuous layer may be applied
by gravure printing.
The composite film is advantageously used for packaging detergents or other washing,
cleaning or laundry treatment products in water-soluble sachets having reduced tackiness
when handled with wet hands.