Manufacturing container or tube from paper; or other manufacturi – Bending – Pulling over an edge
Patent
1994-05-13
1996-05-21
Lavinder, Jack W.
Manufacturing container or tube from paper; or other manufacturi
Bending
Pulling over an edge
493460, 493461, B31F 114, B31F 100, B65H 2310, B65H 1600
Patent
active
055184928
DESCRIPTION:
BRIEF SUMMARY
This invention relates to a ribbon curling and shredding device, and particularly to a device suitable for curling and for shredding polypropylene ribbon at a rapid rate and for mass production.
Hand-held ribbon curling and shredding devices are known and are used for curling the ends of polypropylene ribbon ties. Typically such ribbon is used for tying up a gift parcel and, after making the final knot, the free ends of the ribbon are curled. Such curling makes an attractive flower like addition and has the advantage of hiding the ribbon knot.
In use the devices imposes a permanent shear stress on one side of the ribbon, the amount of stress determining whether the curls are loose or tight.
A disadvantage of prior devices is that if the user is inexperienced or makes a mistake, the ribbon may be imprecisely curled or accidentally stressed on both sides. This often results in having to tie the parcel again in order to obtain two fresh ends with which to apply the curling device.
Optionally such curling devices may include one or more shredding blades which slice the ribbon lengthwise. The shredding blades increase the number of curly ends and are usually applied to the ribbon after it has been drawn across a curling edge.
To overcome the aforementioned problems the present invention provides means for curling and/or shredding continuous lengths of polypropylene ribbon, the treated ribbon being pulled tight for wrapping and tying parcels and the free ends automatically adopting a curled form without any additional operation. Alternatively, plain uncurled ribbon could be used to tie a parcel, and curled ribbon be tucked under the knot to provide an attractive feature which hides the knot; two or more colours may be used.
According to the invention there is provided a ribbon curling device comprising in sequence means for delivering a supply of unstressed curlable ribbon, curling means for said ribbon, and drive means for drawing said ribbon across said curling means. Preferably the device includes shredding means downstream of said curling means.
Such a device is capable of curling and shredding ribbon at rates which are suitable for mass production. Curled and shredded ribbon produced in this way may be used in individual strands for parcel tying and the like, or used in place of shredded tissue as a stuffing material for boxes or bags. A mass of curled and shredded ribbon may also be used for rapid balloon decoration, thereby avoiding the rather tedious curling and shredding of individual ribbon strands.
Alternatively the device may be used as a table top attachment in shops to provide a readily supply of curled and shredded ribbon.
Preferably said drive means comprises a train of wheels, the wheels imposing a tractive effort on said ribbon. In a preferred embodiment the train comprises three wheels, the ribbon being guided between said first and second wheels, around said second wheel and between said second and third wheels. In this preferred embodiment said second wheel is driven by a motor, and said first and third wheels are idlers. Alternatively the tractive device may comprise adjacent belts or wheels in pressing contact and between which the ribbon is squeezed.
The drive means are typically driven by electric motor so that in a shop installation the assistant may produce the required amount of curled ribbon, with or without shredding, at the touch of a button. Such drive means may be driven in response to a coin-operated device or other money payment system.
The device may include drive wheels having adjacent tracks for different ribbon colours and selectively engageable by clutch means to a tractive device such as an electric motor.
The size of the curling and shredding device is determined by the volume and speed of ribbon to be curled and shredded. It is envisaged that an in-store device might measure for example 400 mm.times.150 mm.times.150 mm. Larger machines for continuous mass production of curled and shredded ribbon are also envisaged.
Preferably the device includes means to vary the approa
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Day Christopher W.
Lavinder Jack W.
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