EP 0282563 A4 19890904 - APPARATUS FOR HEAT SEALING SHEETS OF THERMOPLASTIC MATERIAL BETWEEN TWO ELECTRODES.

Title (en)

APPARATUS FOR HEAT SEALING SHEETS OF THERMOPLASTIC MATERIAL BETWEEN TWO ELECTRODES.

Title (de)

VORRICHTUNG ZUM HEISSVERSIEGELN VON THERMOPLASTBLATTMATERIAL ZWISCHEN ELEKTRODEN.

Title (fr)

APPAREIL DE SCELLAGE A CHAUD DE FEUILLES EN MATIERE THERMOPLASTIQUE ENTRE DEUX ELECTRODES.

Publication

EP 0282563 A4 19890904 (EN)

Application

EP 87906336 A 19870908

Priority

BE 217136 A 19860909

Abstract (en)

[origin: WO8801933A1] An apparatus for impulse sealing thermoplastic sheets (4, 5). The apparatus includes two electrodes (1, 2), at least one of which is movable (1) and at least one of which has a deformable head. The deformable head includes a flexible tube (9) housed in a cavity (8) of one of the electrodes. Compressed air controls the deformation of the tube. A protective strip (13) overlays the deformable head and may be advanced when necessary to provide a new protective cover for the flexible tube (9).

IPC 1-7

B29C 65/02; B29C 65/18; B31F 5/00

IPC 8 full level

B29C 65/00 (2006.01); B29C 65/04 (2006.01); B29C 65/22 (2006.01); B29C 65/38 (2006.01)

CPC (source: EP)

B29C 65/04 (2013.01); B29C 66/00441 (2013.01); B29C 66/1122 (2013.01); B29C 66/4312 (2013.01); B29C 66/73921 (2013.01); B29C 66/81422 (2013.01); B29C 66/81455 (2013.01); B29C 66/8322 (2013.01); B29C 66/8511 (2013.01); B29C 65/38 (2013.01); B29C 65/7891 (2013.01); B29C 66/71 (2013.01); B29C 66/8122 (2013.01); B29C 66/83221 (2013.01); B29C 66/9241 (2013.01); B29L 2031/7128 (2013.01)

Citation (search report)

[X] GB 2056907 A 19810325 - POHLIG HECKEL BLEICHERT
[X] US 3826702 A 19740730 - CHAPMAN H
[X] US 2960147 A 19601115 - WESLEY FERRELL
[X] FR 1164707 A 19581014
[X] DE 2255762 A1 19730530 - ELWIS INGF
[Y] US 3473995 A 19691021 - SCHOTT CHARLES M JR
[Y] US 3524783 A 19700818 - SUTHERLAND DONALD
[Y] US 4080229 A 19780321 - WILLIAMS DENNIS M
[Y] DE 2743494 B1 19781026 - STIEGLER MASCHF FELIX
[X] PATENT ABSTRACTS OF JAPAN, vol. 10, no. 273 (M-518)[2329], 17th September 1986; & JP-A-61 098 528 (TOYOTA MOTOR CORP.) 16-05-1986
See references of WO 8801933A1

Designated contracting state (EPC)

CH DE FR GB LI

DOCDB simple family (publication)

WO 8801933 A1 19880324; AU 598600 B2 19900628; AU 8031387 A 19880407; BE 905400 A 19870309; EP 0282563 A1 19880921; EP 0282563 A4 19890904; JP H01500813 A 19890323

DOCDB simple family (application)

US 8702201 W 19870908; AU 8031387 A 19870908; BE 217136 A 19860909; EP 87906336 A 19870908; JP 50578487 A 19870908