Online MDO manufacturing method of bottled beverage self-adhesive label film

Abstract

The invention relates to an online MDO manufacturing method of a bottled beverage self-adhesive label film. The method comprises the steps that corona treatment is conducted on the lower surface of a printing surface layer; the printing ink is sprayed to the lower surface of the printing surface layer through printing equipment, and drying is conducted; a plurality of hoppers are arranged in front of an extruder, raw materials are added into the hoppers according to the sequence of the printing surface layer, a blocking layer and an adhesive layer, after the raw materials are evenly mixed, resin of the layers is melted at the melting temperature ranging from 160 DEG C to 280 DEG C and then is extruded into flow channels corresponding to the hoppers, a blank pipe is extruded out of the extruder, and the blank pipe is cooled through upward blowing or downward blowing operation; the cooled blank pipe is heated again to be at the preheating temperature, and the heated blank pipe is pulled to an MDO device to be longitudinally stretched; and a film which is longitudinally stretched is heated again to be at the shaping temperature, and the film is subjected to shaping treatment, so that a self-adhesive label film finished product is obtained.

Description

technical field [0001] The invention relates to the technical field of beverage packaging, in particular to an online MDO preparation method of self-adhesive label film for bottled beverages. Background technique [0002] Bottled beverages, such as bottled water, fruit juice or carbonated beverages, are popular because of their portability and variety of tastes. Portable bottled beverages generally have a capacity of 330ml to 600ml, and most of the packaging bottles used are square and round. ;In the middle of the packaging bottle, there is usually a label. The square packaging bottle has four horizontal planes, and the label setting is more convenient. The heat shrinkable film is used to print the label on the bottle. The label film is set on the packaging bottle and then shrinks after being heated by a heat shrinking machine. The label will be perfectly attached to the bottle body of the packaging bottle; It is also more complicated, and the equipment cost is also higher....

AI Technical Summary

Problems solved by technology

[0002] Bottled beverages, such as bottled water, fruit juice or carbonated beverages, are popular because of their portability and variety of tastes. Portable bottled beverages generally have a capacity of 330ml to 600ml, and most of the packaging bottles used are square and round. ;In the middle of the packaging bottle, there is usually a label. The square packaging bottle has four horizontal planes, and the label setting is more convenient. The heat shrinkable film is used to print the label on the bottle. The label film is set on the packaging bottle and then shrinks after being heated by a heat shrinking machine. The label will be perfectly attached to the bottle body of the packaging bottle; It is also more complicated and the equipment cost is relatively high

[0003] In order to save costs, many round packaging bottles, such as Coca-Cola's soft drinks, still use self-adhesive label films or heat-seal label films, such as Chinese invention patent applications: highly versatile labels, especially for beverage bottles, etc. A highly versatile label (application publication number: CN106536361A) discloses a label, the label includes a label body (2), the label body is provided as a double layer, and is adapted to define at least one area (3), the area (3) can be separated from the label body (2) Removed and adapted to define a drinking glass, the region (3) of the label body (2) adapted to define a drinking glass has heat-sealed side edges (7, 8) adapted to define a drinking glass The side edges (7, 8) are located inside relative to the break line (4). The two side edges of the label used on the glass overlap each other, and the label can be sealed by heat sealing it with heat sealing equipment. Set on the glass; but this kind of label is more suitable for relatively regular beverage bottles, and it is more rigid. When the shape of the bottle is irregular, the fit is not good. Only the two side edges of the label after heat sealing There is relative movement between the bottles, which is easy to cause damage during storage and transportation

[0004] There is also a self-adhesive label film as shown in Chinese invention patent: label and labeling method (authorized announcement number: CN1675057B), which includes a polymer surface material layer (11), and is lined with a nanoporous layer below the surface material ( 12), and the adhesive layer (16) lining below the nanoporous layer or comprising a polymer surface material layer (11), the nanoporous layer (12) positioned below the surface material, positioned above the surface material (11) or A metal layer (13) beneath the facestock (11) between the facestock and the nanoporous layer (12); these labels can be attached to glass, plastic or metal substrates using a water-based adhesive in contact with the nanoporous layer In general, the bonding strength is good, and the tensile strength is also high, but the production cost is relatively high, and the production process is relatively complicated, which is not suitable for bulk consumer goods

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