EP 0380127 A3 19910821 - THERMOSEALING PAPER FOR TEA BAGS, AND PROCESS FOR MAKING THE SAME
Title (en)
THERMOSEALING PAPER FOR TEA BAGS, AND PROCESS FOR MAKING THE SAME
Publication
Application
Priority
DE 3902298 A 19890126
Abstract (en)
[origin: EP0380127A2] The teabag paper comprises a first phase of natural fibres in a proportion of 60 - 85 % by weight and a second phase of heat-sealable synthetic fibres in the remaining proportion of 15 - 40 % by weight. The second phase penetrates the first phase in such a manner that both sides of the paper are heat-sealable, the weight per unit area of the paper being between 10 and 15 g/m<2>. The teabag paper has improved tea diffusion and can be processed in special, fast, automatic tea packing machinery due to the heat-sealability on both sides.
IPC 1-7
IPC 8 full level
D21F 11/04 (2006.01); D21H 11/12 (2006.01); D21H 13/10 (2006.01); D21H 13/14 (2006.01); D21H 13/16 (2006.01); D21H 25/04 (2006.01)
CPC (source: EP)
D21F 11/04 (2013.01); D21H 11/12 (2013.01); D21H 13/10 (2013.01); D21H 13/14 (2013.01); D21H 13/16 (2013.01)
Citation (search report)
- [YD] WO 8101429 A1 19810528 - DEXTER CORP [US]
- [Y] GB 1411776 A 19751029 - MITSUBISHI PAPER MILLS LTD
- [Y] DATABASE WPIL, no.88-224417 Derwent Publications Ltd., London & JP-A-63159599 (KURARAY KK)
- [A] DATABASE WPIL, no.88-107752 Derwent Publications Ltd., London, & JP-A-63055074 (ASAHI CHEMICAL IND KK)
Designated contracting state (EPC)
AT BE CH DE ES FR GB IT LI NL
DOCDB simple family (publication)
EP 0380127 A2 19900801; EP 0380127 A3 19910821; EP 0380127 B1 19931215; AT E98720 T1 19940115; DE 3902298 C1 19900823; DE 59003814 D1 19940127; ES 2048329 T3 19940316
DOCDB simple family (application)
EP 90101601 A 19900126; AT 90101601 T 19900126; DE 3902298 A 19890126; DE 59003814 T 19900126; ES 90101601 T 19900126