Abstract: A wrapping method comprises the prior stretching of a film wherein the prior stretching of the film advantageously includes a step of paying out the film from a feed reel, a stretching step, and a step of winding the stretched film onto a mandrel or a take-up reel in readiness for subsequent use. The film of the present invention is previously stretched under a large amount of tension, is released, and is then wound under moderate tension, under which the film is allowed to relax. The present invention is applicable to preparing film for wrapping loads that are optionally palletized and suitable for being put into place either manually, or mechanically.

Abstract: A wrapping method comprises the prior stretching of a film. The prior Stretching of the film advantageously includes a step of paying out the film from a feed reel, a stretching step, and a step of winding the stretched film onto a mandrel or a take-up reel in readiness for subsequent use. The film of the present invention is previously stretched under a large amount of tension, is released, and is then wound under moderate tension, under which the film is allowed to relax. The present invention is applicable to preparing film for wrapping loads that are optionally palletized and suitable for being put into place either manually, or mechanically.

Abstract: A wrapping method comprises the prior stretching of a film wherein the prior stretching of the film advantageously includes a step of paying out the film from a feed reel, a stretching step, and a step of winding the stretched film onto a mandrel or a take-up reel in readiness for subsequent use. The film of the present invention is previously-stretched under a large amount of tension, is released, and is then wound under moderate tension, under which the film is allowed to relax. The present invention is applicable to preparing film for wrapping loads that are optionally palletized and suitable for being put into place either manually, or mechanically.

Abstract: A machine for winding film, a method of manufacturing spools of pre-stretched film, and spools of pre-stretched film obtained as a result, are disclosed. The method of winding spools of pre-stretched stretchable film includes importing oscillation to the film with a component perpendicular to the axis of the film. For example, during pre-stretched and winding of the film on a take-up spool, a feed spool, i.e. a spool from which the stretchable film for stretching is taken, is caused to oscillate, and/or the take-up core is caused to oscillate. This ensures that successive layers of film are offset, in particular at the margins of the film. Spools of film obtained in this way do not have portions of extra thickness and lower tension at the margins as is the case prior art spools of pre-stretched film.

Abstract: A method and a machine for wrapping loads of items grouped together in a bundle that may be palletized or otherwise, by means of a stretchable film put into place around the bundle and, where appropriate, a pallet, after the film has been pre-stretched and paid out from a spool or the like on which it is stored in the pre-stretched state with an elongation value of about 150% to 500% and a tension, after relaxation, lying in the range 2 to 7, and preferably in the range 2 to 3 daN/mm.sup.2 of film section per turn.

Abstract: The present invention relates to a pre-stretched film, and to apparatus and a method of applying outer packaging to packages and to loads, optimized as a function of the structure and in particular the shape of the package or the load, in particular a palletized load, and also as a function of the transport and handling that the package or the load must be capable of withstanding without the outer packaging being dislocated. According to the invention, a stretchable film is stretched over at least one roller having a diameter that varies along its axis of rotation so as to form parallel longitudinal zones in the film that have different degrees of stretching. These zones make it possible, in particular, to track the external outlines of objects to be packaged and/or to provide locally-reinforced bonding, or on the contrary to present surfaces that are more relaxed. The present invention applies in particular to packaging and grouping together loads that may optionally be palletized.

Abstract: The present invention relates mainly to an optimized method of applying an outer wrapping to a load, in particular a palettized load, and to transporting the load as wrapped by said method.A method of the invention includes the following steps:a) determining the forces that the load must be capable of withstanding and the resulting maximum acceptable deformations;b) selecting a general outer wrapping configuration as a function of the load to be wrapped, the method of transport, of handling, and/or of storage for the load, and also the available wrapping machines; andc) determining the disposition of the film to be implemented using the minimum quantity of film to achieve wrapping having the configuration as determined in step b) and capable of withstanding without dislocation or unacceptable deformation the stresses as determined in step a).

Abstract: A method and a an apparatus for the exterior packaging of a palletized load supported by a platform (2) and by at least two lateral sliding supports (11, 12) contiguous with two longitudinal edges (7) of a lower face (3) of the deck (2) of the palletized load (1)is disclosed. The lower face (3) has two transverse sides (6) for taking up the load by means of a handling device. The method includes a preliminary step of covering the palletized load with a film (20) made of a heat-shrinkable material, followed by a step of heat-shrinking the material. According to the invention, the heat-shrinking step involves, on the one hand, shrinking a return portion (23) of the film beneath the lower faces (9) of the lateral sliding supports (11, 12) and conforming the film (20) along the transverse sides (6) in order to conform the lower edge of the film so as to be substantially level with the platform (2)with is a central region (26).

Abstract: Method and installation for packaging a palletizable load (20), in which the constituent elements (21) of the load (20) are positioned on the pallet in several levels or layers of palletization by a palletization member, wherein :a sheet (9) of a material having non-slip properties is inserted between each level of palletization; andthe peripheral strapping of the load is carried out by a microcreped stretchable paper tape.

Abstract: A method and apparatus for wrapping the sides and covering the top of a load. The apparatus comprises of a reel of wrapping film and a load support that can be rotated relative to each other about an axis that is coincident with the vertical axis of the load to thereby wrap the sides of the load. The film reel and the load support are further pivotable relative to each other about a second axis that is orthogonal to the load axis as well as slidable relative to each other along this second axis to thereby cover the top face of the load.

Abstract: The invention relates to a strip having a longitudinal reinforcement; a packaging method comprising such a strip; an installation and a machine for implementing the packaging method and a device for the production of such a strip. This flexible strip (1), which is more specifically applicable to the construction of packaging, constituted more specifically by a plastic film, of the integrally produced type, wherein it possesses at least one longitudinal zone of reinforcement (2) constituted, at least in part, by N longitudinal zones of folding (3a, 3b, 3N) of the strip (1), adjacent to one another, overlapping one another at least substantially flatly, at least in part, in a single longitudinal region of the strip (1), N being a positive integer at least equal to two.