Package making – Closing packages and filled receptacles – Including provision for pleat of cover overhang
Patent
1996-11-12
1998-06-30
Coan, James F.
Package making
Closing packages and filled receptacles
Including provision for pleat of cover overhang
53370, 533704, 156184, 156187, B65B 5110, B65B 2514, B65B 5122
Patent
active
057716595
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention concerns an apparatus for use in plastics sheet wrapping of web-shaped material rolled up on a plastics-containing core tube having substantially the same length as the width of the web-shaped material, the apparatus including closing parts which are adapted to grip and gather the excess plastics sheet parts which extend beyond the rolled-up web-shaped material at at least one end.
2. The Prior Art
Owing to considerations of space and to facilitate handling of the web-shaped material, core tubes having substantially the same length as the width of the rolled-up web-shaped material are used today. So far, the end closing of the plastics sheet package around the web-shaped material has been made manually in practice by taping, plugging and subsequent fixing with staples, respectively, interiorly in the core tube. These methods are difficult and cumbersome to perform and provide no real certainty that the package will be hermetically tight. The consequence is therefore frequently transport damage, in particular in case of wrapped web-shaped material, such as carpet materials which are placed in their full length on the platform of a truck, where dirt and water are sucked up at the tailboard during driving. A tight end closure is therefore absolutely necessary. Heavy web-shaped materials, such as carpet materials, where a roll can weigh up to 600 to 700kg, also make particularly great requirements with respect to a strong end closure which remains tight with certainty during transport and handling, where the tube frequently "sinks" into the material and thus subjects the end closure to a great load.
GB 2 043 021 discloses an apparatus of the type mentioned in the opening paragraph. However, in this apparatus it is a requirement that the core tube is considerably longer than the width of the rolled-up, web-shaped material for the provision of an asserted tight end closure by heat fusion. However, the apparatus cannot be used commercially in practice owing to the protruding core tube which occupies unacceptably much space during storage and transport.
Thus, so far it has not been possible to obtain both a tight package, which is important to avoid ingress of dust, dirt and moisture, in particular during transport on the platform of trucks, and a wrapping method which leaves the interior of the tube freely accessible for fork-lift trucks having rods in connection with wrapping of rolled-up, web-shaped material on core tubes which have substantially the same length as the width of the web-shaped material.
Finally, it should be mentioned that the manual closing does not enable direct recycling owing to the different materials materials used (tape, plug and staples.
SUMMARY OF THE INVENTION
The apparatus of the present invention is characterized in that it includes welding means which are adapted to weld gathered plastics sheet material parts along the annular end face on the adjacent end of the core tube. This ensures that a tight and strong package is provided with certainty, while the interior of the tube is freely accessible to carpet rods, forks on fork-lift trucks, etc.
In use, the closing parts of the apparatus are joined around the excess plastics sheet parts which are subsequently kept together at the end of the core tube with or without engagement of the closing parts. The welding head is then driven forwards, and the plastics sheet parts are welded to the end face of the core tube.
The invention can provide the advantage that the tube appears without excess plastics sheet parts, while a neat end closure is obtained.
The invention may be used to special advantage when both core tube and package are made of the same plastics material, e.g., polyethylene, which simplifies the recycling process considerably.
BRIEF DESCRIPTION OF THE DRAWING
The invention will be explained more fully below with reference to the drawing, in which
FIG. 1 is a lateral view of an apparatus according to the invention containing a web-shaped material,
REFERENCES:
patent: 3875723 (1975-04-01), Sundin
patent: 4517790 (1985-05-01), Kreager
patent: 4534151 (1985-08-01), Schneck et al.
patent: 4716709 (1988-01-01), Lamb, Sr. et al.
patent: 4933041 (1990-06-01), Wildmoser
patent: 5013193 (1991-05-01), Rabo et al.
patent: 5016430 (1991-05-01), Itoh et al.
patent: 5058360 (1991-10-01), Yamazaki et al.
patent: 5071501 (1991-12-01), Doi et al.
Campen A/S
Coan James F.
Kim Gene L.
LandOfFree
Apparatus to weld a wrapping sheet to the core of a warpped roll does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus to weld a wrapping sheet to the core of a warpped roll, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus to weld a wrapping sheet to the core of a warpped roll will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1847959