Package making – Methods – Applying a partial cover
Patent
1998-02-10
1999-08-03
Johnson, Linda
Package making
Methods
Applying a partial cover
53430, 53118, 53587, 533893, B65B 1104
Patent
active
059309806
DESCRIPTION:
BRIEF SUMMARY
The present invention concerns a method for producing round bales of straw or of like material with film wrapping. It has become a widely used practice to keep straw in the outdoors in the form of bales, in that rows of bales are either covered by a film or are made up of bales provided with a film wrapping for weather protection. Bales to be used as fodder are injected with ammonia and are completely wrapped up, either individually or collectively in a kind of film tube, which requires a relatively expensive apparatus.
However, much of the straw is used as bedding for livestock, and it is sufficient that these bales are wrapped with film around their circumference. This may be effectuated with a perceptibly simplified wrapping apparatus. Moreover, it is also so that round bales for that use are commonly produced by use of baling presses, which are far cheaper than more industrial presses, which mostly are rented through machine pools and used for the production of the larger "big bales" in a round or box-shaped form for ensiling or for different industrial purposes.
More and more it is realized, that the gathering in of straw from the field is becoming so expensive, that soon it will be more profitable just to plough down the straw since it may no longer be burned. This is also the case with straw for bedding, where it is decisively necessary to minimize the gathering costs. As mentioned here, it is true that comparatively inexpensive baling presses and wrapping apparatuses may be used, but the combined costs for the machinery and the expendables belonging thereto, namely binder twine for the round baler and wrapping film for the wrapping apparatus, are very straining for the profitability.
By the present invention it is realized, that these conditions may be perceivably bettered by the fact, that it has been found possible to provide the relevant, conventional round bale presser with a comparatively uncomplicated device, which instead of winding twine around the single finished round bale may wrap the bale up with a length of packing film in such a way that the film wrapping will serve both as a structural stabilization of the round bale and as the required packing of it. Thereby it is not only achieved, that the expendable constituted by the twine may be completely avoided, but also that the use of a separate wrapping apparatus may be abandoned entirely, because its functions are taken over by the combined effect of the film supply device and the baling press itself.
Thereby it is achievable that the relatively simple baler may readily deliver round bales in the shape of already stabilized and relevantly packed items, which in this way may be placed side by side, forming a mainly weatherproof row of protected single bales.
The baling presses in question works in a way, that by driving over the field they continuously collect loose straw by means of a pick-up cylinder, which presses the straw towards a set of running, elastically tightened belts, which yield inwardly as more straw is supplied; a continuously supplied layer of straw will thereby be wound up against the action of the elastic force of the belts, which at last run in an almost closed loop around the produced round bale. Just before it reaches the desired size there is supplied a free end of a twine to the inlet, which twine in this way will be embedded between the hitherto periphery of the bale and the straw layer succeedingly wound up on it. Following less than a further turn of the bale the hauling of the baling press is stopped, while the said belts continue to turn the bale, whereby the bale through 10-15 revolutions is winded with twine from a spool of binder twine, in that the twine spool hereby is displaced sidewardly, so that the winding takes place from edge to edge of the bale's peripheral area. Thereafter the twine is cut off, the twine being selfkeeping after the last several windings, and the bale is delivered to the ground by opening the belt system.
By the invention it is realized that it will be possible to substitute the twi
REFERENCES:
patent: 3407565 (1968-10-01), Bender et al.
patent: 4296595 (1981-10-01), Meiners
patent: 4407113 (1983-10-01), Core
patent: 4569439 (1986-02-01), Freye et al.
patent: 5079898 (1992-01-01), Springs et al.
Patent Abstract of Japan, vol. 14, No. 480, C-771, Abstract of JP A 2-200117 (Takakita Co. Ltd.), Aug. 8, 1990.
Johnson Linda
Safran David S.
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