BR102015015317B1 - PROCESS FOR THE MANUFACTURING OF PLASTIC PACKAGING WITH STICK CLOSURE FOR WRAPPING MISCELLANEOUS PRODUCTS - Google Patents

Abstract

plastic packaging with adhesive closure to wrap various products and the process for their manufacture. in the form of plastic film (1) with variable length and width, as well as its ends having adherent means (2-3) cooperating for final closure, which can be used to wrap various products and raw materials, especially those of serial production, such as: bales in general, coils of various materials, household appliances, electronic devices and components, furniture, boxes, suitcases, paintings or engravings (works of art), mattresses, grouped cushions, channels and conductors in bars, grouping of electrical wires in rolls, fabric reels, various packaging (bottles and jars), food boxes (packaging); Furthermore, said film (1) or packaging (6) is prepared in a reel (12) with several units interconnected temporarily by cooperating breakable sections so that each unit can be unrolled and wrap a certain product and, in the end operation, the next unit remains in position to perform a new wrap.

Description

Field of Invention.

[01] More particularly, the present invention refers to a process for manufacturing packaging in the form of plastic film with variable length and width, as well as its ends have cooperating sticky means for final closure.

[02] The resulting packaging, only by varying dimensions, can be used as a wrapping for various products and raw materials, especially those of serial production, such as: bales in general, reels of various materials, appliances, appliances and electronic components, furniture, boxes, suitcases, pictures or prints (works of art), mattresses, grouped pillows, channels and conductors in bars, grouping of electrical wires in rolls, fabric coils, various containers (bottles and jars), boxes (packaging) of food.

[03] Therefore, with the present process, the packaging in question constitutes a plastic film wrapping capable of wrapping (wrapping) any product regardless of the format, wrapping it with one, two or several turns and, at the end, the end of the film is fixed by adhesive layer, stabilizing the entire package.

State of the art.

[04] Currently there are practically two more adopted ways to wrap a product or several products at once using plastic films, in which the first is known as "heat shrink or heat shrink" film, while the second is known as "plastic film" simply. The first wraps the product with some slack and, after applying heat, the film dents against the product. In the second way, the film is actually very thin and fits over the product easily. Logically, there are many variations for the material in both cases, depending on the product to be wrapped.

[05] On the other hand, there are other plastic film processes with variable thicknesses prepared in rolls used to wrap different products and, in this case, the film is unrolled and cut to the desired length with a manual knife, as well as its final closing is performed with adhesive tape at several points, including longitudinally to consolidate the package. There is no doubt that this way of wrapping articles presents some efficiency, however some disadvantages are noticed, mainly the lack of control over the amount of film used (usually more than necessary). As the cut is not regular and the width of commercial tapes is narrow, you need to pass several adhesive tapes to hold all the edges of the irregular cut, and to consolidate the wrapping, pass other adhesive tapes in the longitudinal direction. Another disadvantage is that all the film tensioned during the wrapping process is lost when cutting with the stylet, causing the wrapping to be unpacked and difficult to finish.

Purposes of the Invention.

[06] In view of the above circumstances and with the aim of overcoming them, the present process was created, resulting in packaging in the form of plastic film with technical characteristics completely different from the state of the art, that is: - each packaging is a film pre-prepared plastic with width and length according to the product to be wrapped; - each unit has a strip for wrapping consolidation; - each package or film is pre-cut with precision and the closing adhesive already positioned and without the need for removal of the protective liner; - several packages are interconnected to each other and are prepared in rolls with several units; - when removing a unit from the roll, its separation occurs by means of a transversal weakened line easily breakable at the desired moment, leaving it ready to be used the next unit;

[07] - the package is ready in less time, looking much better and without wasting material; and

[08] - the packaging thus prepared in roll is possible to be defined in advance with many variations in the plastic film, in the dimension, in the type of adhesive used, as well as the customization of the plastic film, all of this according to the product. be wrapped up.

Description of the drawings.

[09] For a better understanding of the present Invention, a detailed description is given below, referring to the attached drawings, where all figures are schematic and do not follow a scale, logically for better visualization and understanding of the parts that form the packaging and its obtaining process, with: FIGURES 1 to 8 representing views and enlarged schematic details highlighting this packaging; and FIGURES 9 to 17 show other views and enlarged schematic details, but highlighting the packaging manufacturing process.

Detailed description of the invention.

[10] According to these illustrations and their details, more particularly figures 1 to 6, the present invention, PROCESS FOR THE MANUFACTURING OF PLASTIC PACKAGING WITH STICK-UP CLOSURE FOR WRAPPING MISCELLANEOUS PRODUCTS, designed to define interconnected packages prepared in a coil, comprising, as shown in figure 1: - a thermoplastic film (1), continuous, with width and length matching the product to be packaged; - having a first transverse band of glue with high adhesion power (2); - a tape low adhesion adhesive with silicone back (3); - a distance (4) between the high adhesion adhesive strip (2) and the silicone adhesive tape (3); - cross section (5) exactly in the middle of the distance (4), this cut that separates the wrapping parts or wrapping packages themselves (6), the same, from the continuous film (1); - the continuity of the plastic film (1) and keeping the packages (6) interconnected with each other , as shown in figures 2 and 3, the ends ties with the glue strip (2) and with silicone adhesive tape (3) are opposed and joined together forming a separable flap (7) with an extreme volute (8) in the transverse section that sets the distance (4) and, in this point, the cross-section (5) is made by removing said volute (8); - a transverse point of separation between the formed packages (6), as shown in figures 4 and 5, by applying a transverse tape (9) that , in turn, has at least one breakable or weakened centerline (10), longitudinal, dividing it into two parts (11A) and (11B), which are respectively glued to the ends of the two adjacent packages (6), joining -the ones immediately before the separable flap (7) of the glued sections (2) and (3); and - as shown in figure 6, preparation in coils (12) of packages (6) interconnected between, and for that, before being prepared in coils, see figures 7 and 8, each flap (7) is rolled and flattened .

[11] In this way, a certain amount of wrapping packages (6) is prepared in a coil (12). Thus, when the first one is pulled and the product is wrapped, in the end the unit breaks through the weakened point (10) and, at the same time, exposes the high-adhesion glue strip (2) to finish the wrapping and, with that, , the following packaging for use is also positioned.

[12] The PROCESS for manufacturing the PLASTIC PACKAGING WITH A TICK-UP CLOSURE FOR WRAPPING MISCELLANEOUS PRODUCTS described above is schematically illustrated in figures 9 and 10, where it is verified that it is performed by a programmable equipment with various information that varies according to the characteristics of the packaging (6) to be processed, as, as already mentioned, there is a considerable range of sizing of the plastic film and the details added to it, however, the process is the same and comprises the following steps: - preparation of a plastic film master reel (1) in a known uncoiler; - the plastic film (1) is continuously pulled by pairs of positioning rollers (13) and (14), passing before a series of guide rollers (15) and a accumulator (16) and, thus, said plastic film (1) is spread over tables (17) and (18), where it arrives already adjusted in width as a function of side trimming knives (19); - between the positioning rollers (13 ) and (14) is di A spray station (20) is placed, which applies, on the upper side of the plastic film (1), the transversal strip of glue with high adhesion power (2) and, after that, the adhesive tape with a silicone back is also applied (3 ) of low adhesion, with the spacing between these two glue bands being foreseen (4); - formation of the temporary flap (7), seen in figures 11 and 12, where it is verified that this step is carried out by folding the spacing ( 4) in a closed "V" shape and temporary bonding between the sticky parts (2) and (3), and for this purpose, this region is forced downwards by means of a transverse ruler (21) forcing the spacing (4) by between a pair of winder rollers (22) and, at this time, control devices combine rotations at different speeds and directions between all the rollers involved in the process so that the plastic film can be moved to perform the spacing fold (4) by between the winder rollers (22) until its ferrule (8) is positioned at under said winder rolls (22); - separation of the plastic film (1) on the separable flap (7) below the winder rolls (22) by performing the cross section (5) by a knife and, at this point, the ferrule is removed (8) and the packages (6) are separated before and after such cutting operation; - winding the separable flap (7), as shown in figures 13 and 14 on one of the winding rollers (22) forming a small coil;- application of the breakable transversal tape (9), whose halves (11A-11B) delimited by the breakable line (10) are glued, respectively, on the adjacent ends of the two packages (6), joining them immediately before the separable flap (7) rolled up of the glued sections (2) and (3); - flattening of the separable flap (7) already rolled up, as shown in figures 15 and 16 and, for this purpose, the corresponding roller (22) is transversely displaced to be removed from the rolled flap and , then one of the tables is moved and an actuator (24) performs the flattening; - prep plowing the packages (6) onto reels (12), as shown in Figure 17 and, to do so, once again, all the rollers involved are synchronized to move the plastic film to the rewinder (25) and, before this, sensors and a perforating line (26) determines the end of the rewinding that ends the quantity of packages (6) for each coil (12).

[13] From the above, it is noted that the described packaging and its process of obtaining, add advantageous details in relation to the state of the art, as the film (1) that forms the packages is supplied in a roll, with width and predetermined length for the product to be wrapped, with a predetermined length of the adhesive strip (2) for wrapping consolidation. The film is pre-cut with precision and the closing adhesive is already in place, without the need to remove the protective liner. The wrapping is done in less time, looking much better and without wasting material.

[14] In this way, the main objective of the invention was to define a film reel to wrap serial products, which allows great productivity for wrapping, film economy, and great facility for wrapping consolidation and obtaining good presentation. This was possible due to the fact that the film is already cut to the length necessary to make the wrapping, has a lightly adhesive end of the film, a weakened tape joining the two adjacent films, where the breaking strength is adequate for each type of wrapping, and an edge band with high adhesion adhesive that is wound with the end of the next wrapping film, which, as the wrapping is completed, progressively unrolls and adheres to the wrapping without losing the tension given during handling to wrap. At the end of the wrapping, the end of the next wrapping is ready to start a new wrapping.

[15] As stated before, the plastic film (1) is subject to many variations, notably with regard to material and dimensioning, as said film can be made of different polymeric materials, notably polyolefins, even thus, it is also possible to use other materials prepared in very malleable films, such as those obtained from cellulose (paper) or even hybrid films that combine organic materials with synthetic materials, for example, laminated with plastic and paper.

[16] On the other hand, it is also known that the adhesive parts that make up the package can use different materials, also defined according to the final purpose of the package. The high adhesion glue placed at the closing end of the wrapping can be hot glue applied directly on the film, or a double-sided tape with adequate adhesiveness, its liner being removed at the time of application. The adhesive tapes that can be adopted are already known and the existing variety allows a choice for each case or to better meet the final purpose of the package.

[17] With regard to the equipment used to carry out the process, it is noteworthy that its characteristics vary considerably according to the dimension and materials used to manufacture the packaging, as well as the number of units completed in the rewinding. Logically, the same equipment has resources to handle the manufacture of a certain range of packages, that is, in possession of the information on the desired wrapping film, the equipment is programmed according to the total length of each segment, number of segments per roll, length of the adhesive strip, exchange of the embrittlement disk of the final tensioning tape and other adjustments inherent to each package to be produced.

Claims (1)

1) PROCESS FOR THE MANUFACTURING OF PLASTIC PACKAGING WITH A STICKY CLOSURE FOR WRAPPING MISCELLANEOUS PRODUCTS, designed to define packages from a continuous plastic film, with cross sections (5) that result in individual packages (6), with width and length corresponding to the product to be packaged, as it also has the upper side extremized by a first transversal strip of glue with high adhesion power (2) and an equally transversal adhesive tape with low adhesion power and with a silicone back (3); cooperators for fixing the ends after the wrapping (6) has been rolled up to the product to be wrapped; characterized in that it comprises the following steps: - preparation of a plastic film master reel (1) in a known uncoiler; - the plastic film (1) is continuously pulled by pairs of positioning rollers (13) and (14), passing before, by a series of guide rollers (15) and by an accumulator (16) keeping said plastic film (1) extended on tables (17) and (18), where its width is adjusted by side trimming knives (19) ;- between the positioning rollers (13) and (14) there is a spray station (20) which applies, on the upper side of the plastic film (1), the transversal strip of glue with high adhesion power (2) and, after that, adhesive tape with low-adhesion silicone back (3) is also applied, with spacing (4) between these two bands of adhesive being provided; - formation of the temporary flap (7) carried out by folding the spacing (4) in closed "V" and temporary bonding between sticky parts (2) and (3), where such region is forced down by by means of a transverse ruler (21) guiding the spacing (4) between a pair of winder rollers (22) and, at this time, control devices combine rotations at different speeds and directions between all the rollers involved in the process moving the plastic film to perform the folding of the spacing (4) between the winding rollers (22) until its ferrule (8) is positioned below said winding rollers (22); - separation of the plastic film (1) on the separable flap (7) below the winding rollers (22) by making a cross-section (5) by a knife and, at this point, the ferrule (8) is removed and the packages (6) are separated before and after such cutting operation; - winding of the separable flap (7) on one of the winding rollers (22) forming a small coil; - application of the breakable transversal tape (9), whose halves (11A-11B) delimited by the breakable line (10) are glued, respectively, on the adjacent ends of the two packages (6) joining those immediately before the peelable flap (7) rolled up of the glued sections (2) and (3); - flattening the separable flap (7) by means of the corresponding roller (22) which is transversely displaced to be removed from the rolled flap and, in then, one of the tables is moved and an actuator (24) performs the flattening; e- preparation of the packages (6) in reels (12) and, for that, once again, all the rollers involved are synchronized to move the plastic film to the rewinder (25) and, before this, sensors and a perforating line (26) determine the end of the rewind that ends the quantity of packages (6) for each coil (12).

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