摘要:
A gluing device including a guide roller to guide the tail of the log; on the guide roller, retaining elements to engage and retain the tail on the guide roller; a gluing member, to apply a glue to the tail retained on the guide roller. There are also provided embossing members, arranged and controlled to emboss a portion of the tail of the log. The gluing member applies the glue to embossing protrusions formed by the embossing members.
摘要:
A method for bonding the tail of a convolutely wound log to the body is provided. The method comprises the use of a nonadhesive phase-change material to mechanically bond the tail to the wound log. The nonadhesive phase-change material is heated to an amorphous state prior to its application. Once applied to the wound log, the nonadhesive phase-change material mechanical bonds with the tail and wound log and as heat is lost, changes to a non-amorphous state. The mechanical bond can be selectively reversed through the application of a strength degradation accelerator.
摘要:
A gluing mechanism and method is used to dispense glue onto predetermined positions at a gluing side of a long tape of tissue paper when the tissue paper is feeding through a winding machine. The gluing mechanism includes a glue dispensing roller oriented towards and located at a predetermined distance from the gluing side of the tissue paper; at least one gluing member located near a predetermined feeding path of the tissue paper to orient toward a contact side of the tissue paper opposite to the gluing side, and including a pivot end and an action end. A driving mechanism is connected to the pivot end of the gluing member for driving the gluing member to turn about the pivot end, so as to move the action end of the gluing member to a glue dispensing position oriented toward the glue dispensing roller or away from the glue dispensing position.
摘要:
The device comprises a system for unwinding a portion of the web material from the log R, and a system for rewinding the tail end on the log after application of an adhesive. Moreover, a folding member 21 is provided, to fold the tail end and form a fold of web material defining a portion for gripping and detaching the folded loose end from the roll.
摘要:
Easy starting rolls of perforated tissue product which have a reduced tendency to ply separate are formed with an adhesively secured doubled over tail tab folded against the roll. The strength and location of the bonds are controlled by controlling the penetration of the adhesive into the tissue. The dry tensile strength of the projecting folded over tail tab exceeds 400 g/in and the caliper thereof exceeds one mil The adhesive bonds are spaced away from lines of perforation joining sheets in the initial sheets of the roll.
摘要:
A device for distributing glue on an end edge of a log, on a log or on a core for logs comprising a feed surface (16) of logs or cores (15) towards a glue distribution area, wherein the device comprises a container (13) containing glue (12), wherein disposed inside the container (13) is a fixed blade (18) with one free end (22) facing upwards at the level of an interrupted section (19) of the feed surface (16) on which the logs or cores (15) travel, one behind another, the fixed blade (18) being associated with a plate (27) movable from the bottom upwards, and vice versa, which conveys the glue (12) to the level of an upper free end (22) of the fixed blade (18), discharges it on the free end (22) and returns towards the bottom of the container (13), the moving plate (27) having, at an upper end thereof, an area to collect glue (28, 29) in the container (13) and to discharge glue on the fixed blade when it is taken to the level of the upper end (22) of the fixed blade (18).
摘要:
Easy starting rolls of perforated tissue product which have a reduced tendency to ply separate are formed with an adhesively secured doubled over tail tab folded against the roll. The strength and location of the bonds are controlled by controlling the penetration of the adhesive into the tissue. The dry tensile strength of the projecting folded over tail tab exceeds 400 g/3″ and the caliper thereof exceeds one mil The adhesive bonds are spaced away from lines of perforation joining sheets in the initial sheets of the roll.
摘要:
A gluing unit for one terminal edge of a log and a method applicable inside a machine for the realisation of a log, in which the logs (14) coming from a rewinding machine are fed towards a gluing unit (11) comprising in sequence a lower unwinding roller (16), and a upper feeder belt (17, 26), and immediately downstream of the unwinding roller (16) at least one section of a sloping plane surface (21, 23) of a pre-established length, followed by a vacuum suction roller (24) above which is positioned an upper roller (25), and then a glue distributor (27), an element (19) being envisaged above the unwinding roller (16) which blows on a terminal edge (29) of the log (14) and underneath a photocell (20) to detect the final edge (21), an evacuation surface (34) for the glued log being envisaged, wherein the log fed by the unwinding roller (16) is placed with the position of the free end out of alignment by an angle (α) according to the log diameter and the pre-established length of the sloped surface section (21, 23) so that the log in this position, rolls down the sloped surface (21, 23) to position itself on the suction roller (24) with its free end of the final edge (29) placed exactly in correspondence with the contact zone with the suction roller (24).
摘要:
The present invention relates to a system and method for transferring tissue reels. The system preferably incorporates nozzles that spray an adhesive directly onto moving tissue paper substrate, as opposed to applying adhesive directly to the reel, independent of machine speeds and basis weights of the substrate. Alternatively, the system of the present invention may also apply adhesive directly to the new reel as opposed to the tissue paper substrate. In the preferred embodiment, the new core or reel is brought up to substantially equivalent speed as the moving tissue paper substrate and placed into contact with the moving web of tissue. When the new reel is in place, the valves are activated thereby spraying adhesive across the width of moving tissue. The newly coated substrate sticks substantially immediately to the new core and cleanly tears away from the completed roll.