摘要:
Laser apparatus for longitudinally slitting and welding a collapsed tube of polyethylene film comprises a laser having a guide (27) directing the laser beam at the film as it passes over a roller (13). The middle section of the roller is a hollow quartz cylinder (40) which absorbs laser energy passing through the film and enhances cutting and welding efficiency. A jet (80) of air is directed at the film immediately in front of the focus (60) of the laser to flatten the film on the cylinder (40) and disperse any smoke.
摘要:
Sufficient strength of a joint portion is secured in a tire configured by joining together plural tire structuring members formed from a thermoplastic material. A welding thermoplastic material 43 that has been melted is extruded towards joining locations on two tire halves 17A formed from a first thermoplastic material that have been aligned so as to face each other and abut, such that the one tire half 17A and the other tire half 17A are welded together with the welding thermoplastic material 43. Degradation of the thermoplastic material forming the tire halves 17A is suppressed since the tire halves 17A are not themselves melted, and sufficient strength of the joint portion is secured.
摘要:
The bonding device (1) includes a base portion (2), the nozzle (10) discharging adhesive, an upper roller (12) and a lower roller (18) that clamp and feed an upper sheet (C2) and a lower sheet (C1), a lower feed arm (7) rotatably supporting the lower roller (18), a lower roller base (35) holding the lower feed arm (7), and an adjustment mechanism (700) that adjusts an attachment position of the lower roller base (35). The adjustment mechanism (700) includes a first shaft portion (71) extending from a fixing face of the base portion in a perpendicular direction, and a rotating member (73) having a first hole portion (738), into which the first shaft portion (71) is inserted, extending in parallel to the perpendicular direction, and being capable of rotating around a rotation axis that is eccentric with respect to the first shaft portion (71). The distance between the upper sheet (C2) and the nozzle (10) does not change as a result of the lower roller base (35) moving in the up-down direction.
摘要:
In an embodiment, a long reinforcing material-attached profile strip (100) in which joint portions are formed at both side edge portions and to which a reinforcing material continuously formed in the longitudinal direction is attached is supplied, and mutually adjacent joint portions are joined to each other, thereby producing a spiral pipe (S). A curl-forming apparatus (3) includes a sending roller for the reinforcing material-attached profile strip (100) and a curl guide. Using the curl-forming apparatus (3), adjacent parts of the reinforcing material-attached profile strip (100) are subjected to plastic deformation to form spirals by being provided with arc-like curls having a radius of curvature substantially similar to or not greater than the radius of curvature of the spiral pipe (S). Accordingly, the spiral pipe (S) can be produced while suppressing the action of a restoring force that restores the reinforcing material-attached profile strip (100) to its original radius of curvature.
摘要:
The bonding device (1) includes a discharge outlet (65), an upper roller (12), and a lower roller (18). The discharge outlet discharges the adhesive. The upper roller is disposed above a cloth (C1) and a tape (C2), at a position at which the tape overlays the cloth, and comes into contact with the tape. The lower roller is disposed below the cloth and the tape so as to face the upper roller, and comes into contact with the cloth. The upper roller and the lower roller feed the tape and the cloth. The discharge outlet faces an outer circumferential face of the upper roller at a position further to an upstream side, in a feed direction of the tape, than a pressure bonding point at which the upper roller and the lower roller operate in coordination with each other to pressure-bond the cloth and the tape.
摘要:
What are described and claimed are a process and a device for producing bags (2, 2'), the walls of which contain stretched polyolefin material, - in which at least one thermally induced joining process is effected by heating at least some of the material (2, 2', 3, 3') to be joined with a stream of hot air (18), - which (18) is produced by firstly guiding air past one or more heating devices (16, 21) and then conducting it onto the material (2, 2', 3, 3') to be joined. It is considered novel and inventive that the stream of air (18) is guided past at least one heating device (16, 21) in pulsating fashion.
摘要:
Sufficient strength of a joint portion is secured in a tire configured by joining together plural tire structuring members formed from a thermoplastic material. A welding thermoplastic material 43 that has been melted is extruded towards joining locations on two tire halves 17A formed from a first thermoplastic material that have been aligned so as to face each other and abut, such that the one tire half 17A and the other tire half 17A are welded together with the welding thermoplastic material 43. Degradation of the thermoplastic material forming the tire halves 17A is suppressed since the tire halves 17A are not themselves melted, and sufficient strength of the joint portion is secured.