Food or edible material: processes – compositions – and products – Processes – Packaging or treatment of packaged product
Patent
1984-04-03
1987-06-02
Weinstein, Steven
Food or edible material: processes, compositions, and products
Processes
Packaging or treatment of packaged product
53450, 53550, B65B 1106
Patent
active
046702792
DESCRIPTION:
BRIEF SUMMARY
The invention concerns a method of wrapping essentially flat products of the luxury-comestibles or foodstuffs industry, especially squares or bars of chocolate, in packaging foil or film and simultaneously discloses a device for carrying out the method. Machines called tubular machines, in which packaging film runs from a supply roll in the form of a web to which the pieces to be wrapped are conveyed one following another at an interval by pushers resting on a transport traveling in the same direction as the web of film, subsequent to which the film is wrapped around each individual piece and sealed at its longitudinal and transverse edges, have been employed up to now to package all types of packaged goods. The plastic films employed in this process must be especially rugged and pliable because they have to be drawn over shaping tools of the widest range of types during the operation. Considerable wrapping-material overlap must be provided in order to make the package conform with the requisite tightness standards. This leads to high material consumption and low machine output. Very thin aluminum foil, which is especially amenable to heat-sealing can hardly be employed. Still, metal foils of this type are just the materials that are particularly intended for packaging candy, especially squares or bars of chocolate.
The object of the present invention is to eliminate the aforesaid drawback and create a method and device that allow tubular packaging to be carried out, especially for the inner wrapping of flat articles like squares or bars of chocolate, without specially stressing the particular packaging foil and simultaneously reducing the consumption of packaging material.
Packages in which a longitudinal seam is produced at the narrow end are intended in particular to be manufactured and foils, especially thin metal foils amenable to heat sealing, that are not processed over the type of shaping shoulder ordinarily used in conventional tubular machines are employed, ensuring seams that are particularly tight.
This object is obtained in accordance with the invention in that the webs of foil are transported by means of an intermittently direct connection between foil web and pushers. The web of foil is preferably transported intermittently secured by the pushers that advance the pieces to be wrapped. The web of packaging foil, especially aluminum foil, is in accordance with the invention longitudinally shaped into a tube of wrapping material that has a U-shaped cross-section, that is open at one side, and that accommodates the pieces to be wrapped. The tube is grasped and entrained by conveyor belts rotating at about the same speed because at least one of two arms of the U-shaped tube of foil around the products and the pushers positioned between them is tensioned between and carried along by the pushers and pressure elements that act on the conveyor bands and travel along with them.
A special advantage is that the packaging foil, especially aluminum foil, is pulled off at the instant the products are supplied from where they are stored and is wrapped flat around the series of products in the shape of a U.
The device for carrying out the method just described is characterized by a tube former that forms the web of foil leaving the roll into a tube of foil with a U-shaped cross-section open at the side and extending around the products and that is located downstream of the point at which the products to be wrapped enter the system and of the point at which the web of foil flows into the system, with the transport, traveling along beside the tube of foil, having, first, pushers that project laterally into the opening in the tube and, second, a pressure device on at least on side of the tube of foil that travels along at the same speed as the pushers and presses one side of the tube against them.
A particular advantage is that the tube former operates in conjunction with a pair of conveyor belts that grasps the tube of foil with a U-shaped cross-section on both sides, with a pressure device traveling along on
REFERENCES:
patent: 2049756 (1936-08-01), Asmussen et al.
patent: 2484780 (1949-10-01), Clunan
patent: 2605597 (1952-08-01), Scheib
patent: 2959901 (1960-11-01), Conti
patent: 3001340 (1961-09-01), Gosman
patent: 3009298 (1961-11-01), Gerlach et al.
patent: 3024581 (1962-03-01), Cloud
patent: 3090174 (1963-05-01), Kraft
patent: 3189505 (1965-06-01), Sloan et al.
patent: 3229442 (1966-01-01), Gram
patent: 3295290 (1967-01-01), Billingsley et al.
patent: 3303630 (1967-02-01), Harm
patent: 3338021 (1967-08-01), Liedtke
patent: 3402524 (1968-09-01), Griner
patent: 3589091 (1971-06-01), Cloud
patent: 3807117 (1974-04-01), Abrams
patent: 3908333 (1975-09-01), Cavanna
patent: 4035984 (1977-07-01), Gerlach et al.
Fogiel Max
Otto Hansel GmbH
Weinstein Steven
LandOfFree
Method for wrapping essentially flat products of the luxury-item does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for wrapping essentially flat products of the luxury-item, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for wrapping essentially flat products of the luxury-item will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-612736