An improved rotary cutter for a web material is proposed. It has a pair of rolls adapted to rotate synchronously in opposite directions and an axially elongated knife secured to each roll to extend axially. A plurality of rolling bodies are arranged around each roll to bear the shock upon cutting. Different means for preventing the knives from hitting the rolling bodies are proposed. This arrangem...

Procédé de couplage d'un polymère vivant contenant des unités (meth)acryliques terminales vivantes qui comprend les étapes de:
(i) polymérisation anionique à l'aide d'un système initiateur constitué par un amorceur fonctionnel et un ligand afin d'obtenir un polymère vivant contenant des unités (meth)acryliques terminales vivantes;
(ii) réaction avec un composé aldéhyde de formule: <...

LA INVENCION SE REFIERE A UN SISTEMA DE MANDO Y A UNA INSTALACION PARA LA SOLDADURA POR LASER DE CHAPAS Y BANDAS EN UN PROCEDIMIENTO DE PASO CONTINUO. SE DESCRIBEN ELEMENTOS DE MANDO Y UNA INSTALACION CON LOS CUALES SE OBTIENE UNA COSTURA DE SOLDADURA DE ALTA CALIDAD, COMO SE APLICA P. EJ. EN LA CONSTRUCCION DE CARROCERIAS DE AUTOMOVILES. ESTA INSTALACION PERMITE UNIR POR SOLDADURA CHAPAS, RECUBIE...

Heat-sealable films formed of a polybutylene terephthalate resin composition including between 50 and 95% by weight of a polybutylene terephthalate base resin having an intrinsic viscosity of 0.7 or greater, and between 5 and 50% by weight of a polycarbonate resin having an intrinsic viscosity of 0.4 or greater melt blended with the polybutylene terephthalate base resin.

PURPOSE:To produce an arom. hydrocarbon from a hydrocarbon at a high yield and with good efficiency by depositing platinum to L-type zeolite subjected to a halogen treatment as a catalyst for production of aromatic groups. CONSTITUTION:About 0.1-5wt.%, more preferably 0.3-1.5wt.% platinum is deposited on the L-type zeolite such as fluorine-contg. compd. or chlorine-contg. compd. as the catalyst fo...

PURPOSE:To effectively bring the starting end face of an apex into coincidence with the rear end face and to eliminate the excess or insufficiency of rubber at a joint by holding the rear end of the apex by a chuck, rotating the chuck along a circular arc protruding downward, adhering it to the outer surface of the remaining bead apex, and adhering the starting end face to the rear end face of the...

The invention relates to a device for opening and closing a parasol or the like. The invention also concerns a parasol or the like equipped with such a device, characterised in that it comprises an automatic control member 1 for opening and closing the parasol, this member being integral with the stop 11 of the parasol and comprising means 5, 7, 8, 9 forming a gearing, which means engage with a ra...

Autonomous electrical hair-dryer consisting of a base (1) connected to the electric mains and of an actual portable hair-dryer (3) which can be fitted into the said base (1), characterised in that the actual hair-dryer (3) comprises:   - a heat reserve (9), the heating of which takes place outside the periods of use when the hair-dryer (3) is positioned on its base (1),   - an electrical energ...

UN CONJUNTO DE ROPA DE CAMA PARA EVITAR PROBLEMAS DE ALERGIA CAUSADAS POR EL ASMA, POR EJEMPLO, COMPRENDE UNA BARRERA PERMEABLE (12) TAL COMO UNA CAPA DE TEXTIL MICROPOROSA LA CUAL PUEDE USARSE PARA CUBRIR UN COLCHON O SIMILAR.; A bedding system for use where mite-allergy is a problem causing e.g. asthma comprises a permeable mite barrier (12) such as microporous or vapour permeable coated fabric ...

EL PROCEDIMIENTO DE FILTRACION DE AIRE EN UN APARATO CON EL CICLOFILTRO CONSISTE EN EFECTUAR, EN LA PARTE BAJA EN FORMA DE FALDA (16) DEL CARTUCHO FILTRANTE (4), UNA REDUCCION DE LA VELOCIDAD DE ASCENSO DEL AIRE A FILTRAR. EL CARTUCHO FILTRANTE (4) COMPORTA, EN SU FALDA (16), PERFORACIONES (15) QUE PERMITEN INCREMENTAR LA SUPERFICIE DE ENTRADA DE AIRE EN FILTRAR, REDUCIENDO ASI LA VELOCIDAD DE ASC...

The automatic transmission of the invention comprises a mechanical countershaft transmission 11, gear synchronizer 22, 23 and clutch 12 which have been automated by the addition of electro-mechanical and pneumatic operators 15, 18, 21 and an analog and digital electronic control system 24. The electronic control system receives operator commands regarding the mode of transmission operation (either...

La presente invención se refiere a un compuesto estructural, caracterizado porque comprende: una matriz de resina de fluoropolímero reforzada con fibras de filamentos contínuos.; A composite comprising a fluoropolymer resin matrix reinforced with continuous filament aligned fibers for use in corrosive high temperature environments.

A sheet formed of a polyblend comprising, on a weight basis, a) 30 to 90% polyvinyl butyral containing about 11 to 30 % hydroxyl groups and b) 70 to 10% thermoplastic polyurethane which is the reaction product of: i) polyether polyol or a mixture of polyether polyol and polyester polyol; and ii) aliphatic diisocyanate, aromatic diisocyanate or a mixture of aliphatic and aromatic diisocyanates; the...

A two stage polymerization process for preparing a vinyl acetate emulsion copolymer containing a monomer which is normally incompatible with vinyl acetate. In the first stage the vinyl acetate, desirably ethylene and, optionally, an active crosslinking comonomer and/or latent crosslinking comonomer are free radical polymerized in the presence of a stabilizing system to yield a first stage polymer ...

The invention concerns a structure for the manual acceleration in a vehicle comprising a steering wheel (1; 101; 102), a manual acceleration element (9; 109; 209'), a hub (4; 104; 204) integral with said steering wheel (1; 101; 102) and coupled to the steering column, a system comprising at least one rod element (8; 108; 208) and at least one bearing element (2; 102; 202) slidably coupled each oth...

The invention relates to the reading of optical disks in which the recording is performed in volume in separate layers. Reading a bit recorded within the layers gives a signal with a background noise from all the adjacent bits illuminated by the read beam. In order to eliminate this background noise, the read beam is modulated in position about the bit to be read, either horizontally or vertically...

A curable or polymerizable epoxy resin based composition characterized in that its curing system combines synergistic amounts of (i) at least one imidazole which, on its own, is able to cause the polymerization of epoxy resin only at a temperature higher than about 75 DEG C; and (ii) at least one polyamine compound which, on its own, enables epoxy resin polymerization at a temperature lower than ...

The present invention relates to a method for forming a barrier or filling with self-foaming phenolic resins, especially in the mining field. Method, characterised in that it consists in mixing two components, namely a foaming resin comprising sodium bicarbonate as foaming (pore-forming) agent and a catalyst containing, in particular, sulphonic acids, in order to produce, even at low temperature, ...

The invention relates to a device for entering information relating to a batch containing one or more payment orders, especially universal payment slips, and one or more payment documents, especially cheques, by digitising the latter. It comprises first and second digitising means, first and second transport means enabling the payment orders and payment documents to be conveyed past the first and ...