Abstract

The invention relates to a winding machine for winding material (4) to be wound, comprising at least one winding spindle (1), a drive unit (3) for driving the winding spindle (1), an oscillating device arranged upstream of the winding spindle, a dancer roller (5) that can be displaced counter to the force of a spring (9), and a device for determining a signal proportional to the tension in the material (4) to be wound that is supplied, wherein a control device (17) for controlling the rotation speed of the winding spindle (1) is provided, to which the signal proportional to the tension in the material (4) to be wound that is supplied is fed as an actual value, and which interacts with the drive unit (3) in order to keep the tension in the material (4) to be wound at a predefined intended value. The device for determining a signal proportional to the tension in the material (4) to be wound that is supplied comprises a force measuring device (11) which is designed to measure the spring force of the spring (9).

IPC Classes  ?

• B65H 59/40 - Applications of tension indicators
• B65H 59/38 - Adjusting or controlling tension in filamentary material, e.g. for preventing snarlingApplications of tension indicators by regulating speed of driving mechanism of unwinding, paying-out, forwarding, winding, or depositing devices, e.g. automatically in response to variations in tension
• B65H 59/36 - Floating elements compensating for irregularities in supply or take-up of material

Abstract

In the case of a woven fabric (1) for the manufacture of bags consisting of polymeric tapes, more particularly polyolefin, polypropylene, polyethylene (HDPE) or polyethylene terephthalate tapes, which are preferably monoaxially oriented, the fabric being provided with a coating, the coating is formed by a nonwoven polymeric web, more particularly a polyolefin or polypropylene web (3).

IPC Classes  ?

• B32B 5/26 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by the presence of two or more layers which comprise fibres, filaments, granules, or powder, or are foamed or specifically porous one layer being a fibrous or filamentary layer another layer also being fibrous or filamentary
• B65D 65/40 - Applications of laminates for particular packaging purposes

Abstract

The invention relates to a device for feeding granulate and filler material to an extruder screw (11) of an extruder. A cyclone (12) with an inlet opening for introducing a delivery flow of pneumatically delivered filler material and with an outlet opening (16) for discharging the filler material which has been separated from the delivery flow, a feed funnel (1) for the fresh granulate, and a mixing section (9) are provided, the separated filler material and the fresh granulate from the feed funnel (1) being fed to said mixing section. The cyclone (12) is arranged at least partly in the feed funnel (1) and is coaxial to same such that the outlet opening (16) of the cyclone (12) dips into a feed funnel (1) outlet region (6) which surrounds the outlet opening (16) in an annular manner, wherein a stuffing screw (19) passes axially through the outlet opening (16) of the cyclone (12) and at least partly protrudes into the mixing section (9), which axially adjoins the outlet opening (16).

IPC Classes  ?

• B29C 47/10 - Feeding the material to the extruder
• B29B 7/66 - Recycling the material
• B29C 47/08 - Component parts, details or accessories; Auxiliary operations
• B29C 31/02 - Dispensing from vessels, e.g. hoppers
• B29B 17/00 - Recovery of plastics or other constituents of waste material containing plastics

Abstract

In a method for continuously coating a web of woven fabric on both sides, wherein the web of woven fabric is conveyed in a conveying segment by means of rolls, wherein the web of woven fabric, after a first partial circulation around a coating roller, is guided into a redirecting device comprising two rods arranged at a right angle to each other and the web of woven fabric thus redirected is fed again to the coating roller at a lateral offset and in the same direction of motion as in the first partial circulation for a second partial circulation, the web of woven fabric is guided between the two rods of the redirecting device arranged at a right angle to each other by means of a further roll or rod, which is arranged transversely to the direction of motion of the web of woven fabric.

IPC Classes  ?

• B05C 9/04 - Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by groups , or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material to opposite sides of the work
• B65H 23/32 - Arrangements for turning or reversing webs

Abstract

The invention relates to a bobbin (1) which comprises a bobbin housing (8) and a strip or thread-shaped material (5) which is wound thereon in a plurality of layers, at least one marking (MA; ME), which is in the form of a significant modification of the laying angle (f), is provided in order to display properties of the winding material (5). The invention also relates to a device which is used to identify the properties of winding material (5) on said type of bobbin (1). Said bobbin is associated with a rotational speed sensor (3). An output signal (6) of the rotational speed sensor is guided to a calculating unit (10) and the fluctuations of the output signal of the rotational speed sensor (3) according to the detection characteristics of the calculating unit, which occur when the winding material (5) is wound, produce an output signal (11) during unwinding in the region of the marking, whereas traditional rotational speed signals from non-marked areas of the winding material of the bobbin are processed by the calculating unit (10) in such a manner that no active output signal (11) is emitted.

IPC Classes  ?

• B65H 54/34 - Traversing devicesPackage-shaping arrangements for laying subsidiary winding, e.g. transfer tails
• B65H 63/08 - Warning or safety devices for use when unwinding, paying-out, forwarding, winding, coiling, or depositing filamentary material, e.g. automatic fault detectors or stop-motions responsive to delivery of a measured length of material, completion of winding of a package, or filling of a receptacle
• B65H 67/08 - Automatic end-finding and material-interconnecting arrangements

Goods & Services

Machines, in particular machines for the manufacture and processing of packaging, including sacks and bags of plastic or textile. Packaging material, in particular sacks and bags of plastic, not included in other classes. Plastics in extruded form for use in manufacture, in particular of woven plastics; flexible pipes, not of metal. Nets, tarpaulins, sacks and bags (not included in other classes). Textiles and textile goods, not included in other classes.