The method of making blanks for packages with sealed edges

 

The method of making blanks for packages with sealed edges involves the application of continuous fabric of thermoplastic material of the outer layer and the inner insulating layer, passing outward from one edge of the blade and forming a fixed strip. The strip is bent over the edge of the leaf material and compacted to the outer layer. After that, the cloth is cut into sheets. The sheet is transported further in the manufacturing process with a certain interval between sheets. On the sheets put two pieces of plastic foil - exterior painting and interior painting. Canvas plastic foil is applied so that they pass outward from one edge to form two strips. Each strip is then bent around the edge and seal. The leaves are again separated from one another in the gap and turn 90orelative to the direction of the canvas. Strips formed in the gap, bend toward the inner side of the sheet and seal to the inner layer. The remaining edges of the sheet thus compacted. The sheet again turn 90orelative to the direction of the canvas, bend together and seal the seams in the longitudinal direction to form Sanam process for harvesting for the package, which has an effective protection against environmental moisture. The method also enables the manufacture of blanks for packages with higher stability. 4 C.p. f-crystals, 8 ill.

The present invention relates to a method of manufacturing blanks for packages with sealed edges.

Conventional disposable throw away the package or carton for liquids is manufactured from a packaging laminate with a Central layer of paper or cardboard, which cause the various layers of thermoplastic. Such packages for liquids can be produced directly from a continuous web of material, and cut sheets of material.

The present invention relates to blanks for packages made of sheet material, therefore this description will be shown only the handling of such blanks.

The sheet of material compacted by sealing seams in the longitudinal direction to form a sleeve. At one end of the sleeve to form the top or, alternatively, the bottom of the package and fill the sleeve intended content. After that, the remaining end of the sleeve to form the bottom or top of the package, respectively. The sleeve may be molded in a package that has the form perial will be formed and filled with the intended contents, carefully perform an operation on the protection of the edge or edges of the sheet which are in contact with the contents of the package, so that the Central layer of paper or cardboard could not absorb contained in it liquid and, thus, destroy the package. In the production of blanks for packages of sheets of material to protect the edges of the plastic material, it is necessary to perform "procedure", i.e. milled part of the Central layer in order executed thus a thinner portion of the sheet can be bent to form a protection for the edges. "Seizure" is a relatively expensive and require precision process.

However, the outer edges of the finished disposable package which does not come into contact with the contents of the package, still remain unprotected, and the Central layer when the outer contact with the liquid to absorb the liquid by absorption. For disposable packages of the above type, which are largely exposed to the liquid or the processing of which requires a high level of stability, it may be necessary to protect all edges of the sheet which form the blank for the package.

From the patent Sweden 380196 known method of manufacturing billets Etiony layer and an inner insulating layer, passing outward from one edge of the blade to education enshrined strips, the strip is bent over the sheet edges and seal to the outer layer.

The technical result of the present invention is to provide a method of manufacturing a blank for the package with effective protection from the environment and ensuring the stability of the package.

This technical result is achieved in that in the method of making blanks for packages with sealed edges, where the continuous cloth material is applied outer thermoplastic layer and an inner insulating layer, passing outward from one edge of the blade to education enshrined strips, the strip is bent over the sheet edges and seal to the outer layer according to the invention then the fabric is cut into sheets, which moves forward with a certain interval between sheets, the sheets put two continuous web of plastic foil, one outer sheet and the inner one canvas, each leaf foil passes outward from one edge of the sheets to form the two strips, each of which bend and seal around the edges, the sheets again separated from one another in the center between TLD is duck and consisting of an outer sheet and an inner leaf of a plastic foil, bend over the second edge and the fourth edge of the sheet toward the inner side of the sheet, the sheet re-turn on the 90orelative to the direction of the canvas and finally bend together and seal the seams in the longitudinal direction.

On the outer canvas plastic foil can cause the printed text.

The outer canvas plastic foil can be painted.

The outer canvas plastic foil can be metalize.

On the outer canvas plastic foil there is no printed text and the outer side of the blank for the package can provide a decorative pattern after repeated separation of the sheets from each other.

The preferred embodiment of the present invention will be described in more detail below with specific reference to the accompanying drawings, which depict the following: Fig. 1 depicts a flow chart of the method of making blanks for packages c, sealed edges; Fig. 2-8 - various kinds of on the side, partially in section, of the packaging material at various stages of the method of manufacture.

For the manufacture of blanks for package 1 in accordance with the present invention using canvas 2 material factory manufacturer who's packages. Canvas 2 material factory, which in Fig. 1 shows in the form of a bobbin 3, shown in cross section in Fig.2. Canvas 2 material represents the Central layer 4 made of paper or cardboard. On the outer side of the Central layer 4 is applied thermoplastic layer 5, such as, for example, polyethylene. On the inner side of the Central layer 4 is applied insulating layer 6, which may be either a layer of polyethylene, or a layer 6 shown in Fig.2, consisting of a layer 7 of polyethylene, a layer 8 of aluminum foil and an additional layer 9 polyethylene.

The inner insulating layer 6 is applied on the canvas 2 material so that a portion of the insulating layer 6 is held outward from the edge of the canvas 2 and forms a fixed strip 10. This is carried out so that the wide canvas of the material divided by the length of the narrower part of the cloth 2, which moves forward in parallel and with a certain interval with respect to each other. Split parallel blade 2 is applied protective cover insulating layer 6 over the entire width of all parts of the canvas. The protective insulating layer 6 is then cut along one longitudinal edge of each respective side of the blade 2, so that each part of the canvas 2 has sasiela to the outer layer 5. This surgery is performed on the workstation 11 the flowsheet shown in Fig.1. Canvas 2 material will thus have a view in cross-section, as shown in Fig.3. All layers of plastic deposited on the Central layer 4 using this method are extremely thin relative to the Central layer 4, so the image in Fig.2-8 cannot be considered correct size and accurate in scale.

After that, the canvas 2 share material on the sheet 12 of material of equal size. The sheet 12 of material thus represents a rectangular piece of cloth 2 material with four edges 13, 14, 15, 16. The first flange 13 is already sealed by bending over the fixed strips 10. The division of the canvas 2 material on the sheet 12 of material is carried out on the workstation 17. Further, the sheet 12 of material advance in the manufacturing process with a certain spacing 18 between them. On the workstation, 17 may accordingly be bent sheet 12, i.e., on the sheet 12 by means of the bending tool perform the fold lines so that the sheet 12 can continue in the process to more easily bend in the finished package.

The sheet 12 of material, spaced at intervals of 18 th 21, and another continuous canvas 22 plastic foil forming the outer layer 23. The inner layer 21 preferably consists of a film of polyethylene. Canvas 22 plastic foil may consist of oriented polypropylene. The outer layer 23 may be a film, which is applied or not printed, the film can also be dyed or metallized. The application of the outer layer 23 with a pre-made printing has advantages for maintaining an exact match, because it is easier to adapt pre-printed decorative pattern the pattern to the lines of fold, as the sheet 12 of material can be easily displaced relative to each other and relative to the outer sheet 22 of a plastic foil, provided with a decorative pattern.

The blade 20, 22 of a plastic foil is applied with an offset relative to the sheet 12 of material, and in relation to each other so that the inner layer 21 passes outward from the first edge 13 of the sheet for formation of the strips 34, and the outer layer 23 is held outward from the third edge 15 of the sheet material for the formation of the strips 35, as shown in Fig.4. On the workstation 24 two strips 34, 35, consisting of layers 21, 23, bend around each respective edges 13, 15. The sheet 12 of material b protected by the surrounding plastic layer.

On the workstation 25 cloth formed from two sheets 20, 22 of plastic films and sheet 12 of material enclosed in the plastic between the blades 20, 22 films, re-divided into individual sheets 12 material. At the next station 26 of the sheet 12 of material turn 90orelative to the direction of the canvas. In Fig.6 shows a sectional sheet 12 of material which is rotated 90o.

When the sheet 12 of material on the workstation 25 again separated from adjacent, this separation is produced in the interval between 18 sheets of 12 material. The result is the formation of two strips 27, 28, passing outward from the second edge 14 and the fourth edge 16 of the sheet 12 of material. Both canvases 20, 22 of the plastic foil can be sealed to each other before separating on the workstation 25, or, alternatively, the blade 20, 22 can be sealed and free relative to each other. During the surgery Department has a certain adhesion between the blades 20, 22 films, despite the fact whether they were pre-sealed with one another or not.

The sheet 12 of material in this position may be printed decorative pattern on the workstation 29. The operation of printing on this last stage of the process ishot customers, wish often to change a decorative pattern. At this stage it is possible to print a decorative pattern, which does not need to maintain an exact match.

After that, the strips 27, 28 bend over each of the respective edges 14, 16 toward the inner side of the sheet 12 of material that execute on the workstation 30. The sheet 12 of material now has a view in section, shown in Fig. 7. At this stage all four edges 13, 14, 15, 16 of the sheet 12 of material are sealed by covering and protective plastic layer.

The sheet 12 of material then turn 90orelative to the direction of the band which performed on the workstation 31. Now the sheet 12 of material with sealed edges bend predetermined bend lines on the workstation 32, and finally on the workstation 33 compacted in the longitudinal direction of the seams of the sheet 12 of material to form the finished sleeve, finished blank for a package 1. Seal seams in the longitudinal direction is produced by means of a seam between the first edge 13 and a third edge 15 of the sheet material. Seal the seam in the longitudinal direction shown in section in Fig.8.

As is evident from the preceding description, the present izobretali for the package, which has an effective protection against environmental moisture, when the packages are exposed to adverse conditions. The method in accordance with the present invention also facilitates the manufacture of blanks for packages with higher stability. The method in accordance with the present invention also eliminates the need for expensive "procedure".

The present invention can not be considered limited to those described and shown in the drawings, it may be many modifications, without departing from the range of the attached claims.

Claims

1. The method of making blanks for packages with sealed edges, where the continuous cloth material is applied outer thermoplastic layer and an inner insulating layer, passing outward from one edge of the blade to education enshrined strips, the strip is bent over the sheet edges and seal to the outer layer, characterized in that then the fabric is cut into sheets, which moves forward with a certain interval between sheets, the sheets put two continuous web of plastic foil - one outer sheet and the inner one canvas, and each is try and condense around the edge, the leaves are again separated from one another in the center between the two sheets and turn on the 90orelative to the direction of the line, then strips formed in the gap and consisting of an outer sheet and an inner leaf of a plastic foil, bend over the second edge and the fourth edge of the sheet toward the inner side of the sheet, the sheet re-turn on the 90orelative to the direction of the canvas and finally bend together and seal the seams in the longitudinal direction.

2. The method according to p. 1, characterized in that on the outer canvas plastic foil applied in advance of the printed text.

3. The method according to p. 1, characterized in that the outer canvas plastic foil paint.

4. The method according to p. 1, characterized in that the outer canvas plastic foil metallizer.

5. The method according to p. 1, characterized in that on the outer canvas plastic foil there is no printed text and the outer side of the blank for the package provide a decorative pattern after repeated separation of the sheets from each other.

 

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