Package making – Methods – Applying a partial cover
Patent
1996-08-07
1998-07-07
Johnson, Linda
Package making
Methods
Applying a partial cover
53441, 53556, 53586, B65B 5300, B65B 2712
Patent
active
057750580
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention pertains to a process and a device for packing pressed bales of fibrous materials, especially cut or a strand-like textile fibers, in a baling press with one or more elastic packing material blanks placed around the pressed bale with a overlap, wherein the pressed bale is under a high pressing pressure and the packing material blanks are connected to one another by bonding and/or melting.
BACKGROUND OF THE INVENTION
Such a packing process as well as a packing device in conjunction with a baling press have been known from DE-A-19 51 113. The bale is packed in the baling press with two bags, which are placed over each other with an overlap and are welded together in the overlapping areas. The packing bags are pliable and are stretchable to absorb the expansion pressure of the material. If the expansion of the bale becomes too high, the bale is additionally provided with a tightening strap or a cording which absorbs the forces. The one-layer plastic bags are connected to one another by a welding device arranged on the press box with extending welding dies. The overlapping area is located at the lower pressing or cording plate, which is used as an opposite pole or abutment for the welding process. Due to this manner of overlapping, in which the lower bag is turned over in the rearward direction, the packaging is loosely in contact with the bale. The bale will somewhat expand when the pressure is released, and it will completely fill the package and tighten it only then. The overlapping area now moves upward and is subjected to shear by the expansion forces. Without additional strapping and cording, the prior-art packing technique is suitable only for relatively low pressing and expansion forces as well as for slightly compacted pressed bales.
Similar processes and devices are also shown in DE-A-40 15 642, DE-A-40 15 643, DE-A-29 11 958, and DE-A-29 48 237. In these cases, highly compacted pressed bales of fibrous materials, especially cut or strand-like textile fibers, are packed in a baling press with one or more elastic packing material blanks and subsequently provided with a tightening strap made of metal or plastic strips. The tightening strap secures the package and the pressed bale. In the case of three-film packing, the packing material blank intended as a body belt is pulled off from a film roll in the length needed and is welded together at the ends to form a closed ring around the pressed bale. However, there is only a loose connection, which is fixed by the tightening straps, between the body belt and the packing material blanks acting as the cover or bottom.
The tightening straps have the drawback that they make the further processing of the pressed bales difficult. The tightening strips are cut off or severed in another manner with a suitable tool. This involves the risk that the pressed bale will be damaged. On the other hand, there is a certain risk of accident for the operators during the opening of the tightening strips.
DE-A 41 21 573 teaches a wrapping for solid bodies, which consists of a plurality of layers of roll film, which are connected to one another by an adhesive layer. The roll films are paper or stretch films, which do not withstand a higher load and are unsuitable for packing highly compacted and expanding pressed bales. Moreover, the winding technique cannot be used in the case of a pressed bale if the latter is held between two press dies during the packing process.
SUMMARY AND OBJECTS OF THE INVENTION
The object of the present invention is therefore to show a possibility of improved packing of pressed bales.
According to the invention, a process is provided for packing pressed bales of fibrous material, especially cut or strand-like textile fibers. A baling press is employed for forming pressed bales. One or more elastic packing material blanks are pressed around the pressed bale with an overlap wherein the pressed bale is under a high pressing pressure. Packing material blanks are connected to one another by bonding and/or m
REFERENCES:
patent: 2322298 (1943-06-01), Johnstone
patent: 2545243 (1951-03-01), Rumsey
patent: 3867806 (1975-02-01), Lancaster et al.
patent: 4244471 (1981-01-01), Plante
patent: 4418114 (1983-11-01), Briggs et al.
patent: 4691497 (1987-09-01), Lancaster
patent: 4914892 (1990-04-01), Saito et al.
patent: 5125210 (1992-06-01), Lang et al.
patent: 5351461 (1994-10-01), Fandard et al.
patent: 5369935 (1994-12-01), Lang et al.
patent: 5477658 (1995-12-01), Berger et al.
Autefa Maschinenfabrik GmbH
Johnson Linda
LandOfFree
Process and device for packing pressed bales as well as packing does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process and device for packing pressed bales as well as packing , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process and device for packing pressed bales as well as packing will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1194057