CN202055098U - Four fleeting coated top liner production device - Google Patents

Abstract

The utility model discloses a four-fold net coated kraftboard production equipment, which comprises a four-fold net forming device, a pressing device, a front drying device, a film transfer sizing machine, and a post drying device sequentially installed on a frame , Hard calendering device, curtain coating machine, drying device after curtain coating, blade coating machine, drying device after blade coating, soft calendering device, cooling device, coiling and forming device. The utility model combines the respective advantages of the three coating methods, and can achieve a good coating effect under the premise of low coating amount, so that the coating layer is relatively uniform, the surface smoothness is high, and the surface of the surface layer is glued. It also improves the ink absorption uniformity of the kraft cardboard, so as to ensure a good printing effect of the kraft cardboard and meet the needs of high-quality packaging and printing.

Description

Four-fold wire coated kraft cardboard production equipment

technical field

The utility model relates to papermaking equipment, in particular to a production equipment for coating kraft cardboard.

Background technique

Kraft linerboard is generally made of waste paper or wood pulp as raw materials. It is generally divided into bottom layer and surface layer or bottom layer, core layer and surface layer. It has low cost and high strength, but its surface is rough and its printability is poor. At present, in order to save costs, many commodity packaging generally use kraft cardboard as packaging materials. However, with the improvement of people's living standards and the pursuit of packaging quality, the use of kraft cardboard can no longer meet the needs of some exquisite and high-end products. the

Coated kraft linerboard is increasingly becoming a widely used packaging material due to its high strength, high whiteness on one side and good printing performance. Coated kraft cardboard usually includes a surface layer, a lining layer and a bottom layer, and then coats the paint on the surface layer. Due to the layered structure, the surface layer, the lining layer, and the bottom layer can use different fiber slurries. For example, primary wood pulp can be used for the surface layer, and secondary fiber pulp can be used for the remaining layers. Therefore, the production cost of coated kraftboard is low, and the pollution load of pulping is small, which is very suitable for my country's national conditions of lack of natural wood resources. At present, although there are many production equipments for the production of coated kraftboard, there are different problems such as low production efficiency, high production cost, poor coating effect and poor product quality.

Invention content

The technical problem to be solved by the utility model is to provide a four-ply screen coated kraft liner production equipment with low coating amount, high surface smoothness and excellent printability in view of the deficiencies in the prior art.

For solving the problems of the technologies described above, the technical solution of the utility model is:

Four-fold wire coated kraftboard production equipment, including four-fold wire forming device, pressing device, front drying device, film transfer sizing machine, post drying device, hard calendering device, curtain installed on the frame in sequence Coating machine, drying device after curtain coating, blade coating machine, drying device after blade coating, soft calendering device, cooling device, coiling and forming device.

Wherein, the pressing device includes two straight-through shoe pressing devices.

The front drying device is a drying cylinder, and the drying cylinder includes three single-hanging arrangement drying cylinders and four double-hanging arrangement drying cylinders.

As a preference, the curtain coating machine includes two curtain coating devices.

Owing to adopting above-mentioned technical scheme, the beneficial effect of the utility model is:

The coating equipment of the present invention includes a film transfer sizing machine, a curtain coater and a scraper coater. After sizing or coating the raw cardboard, there is a smooth sizing layer or coating on the surface. The fabric layer, after two-curtain coating, is then coated with a doctor blade, combining three coating methods: film transfer sizing or coating with good covering performance, and curtain coating with good uniformity and no damage to paper. Mechanical damage, and the advantages of good surface smoothness of knife coating can achieve good coating effect under the premise of low coating amount, so that the coating layer is relatively uniform, the surface smoothness is high, and the surface of the surface layer is sizing It also improves the ink absorption uniformity of the kraft cardboard, so as to ensure a good printing effect of the kraft cardboard and meet the needs of high-quality packaging and printing.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Accompanying drawing is the structural representation of the utility model embodiment.

In the figure, 1. Four-fold mesh forming device; 2. Pressing device; 3. Front drying device; 4. Film transfer sizing machine; 5. Post drying device; 6. Hard calendering device; 7. Curtain coating Fabric machine; 8. Drying device after curtain coating; 9. Blade coater; 10. Drying device after blade coating; 11. Soft calendering device; 12. Cooling device; 13. Coiling device .

Detailed ways

As shown in the accompanying drawings, the four-fold wire coated kraft cardboard production equipment includes a four-fold wire forming device 1 installed on the frame in sequence, and a pressing device 2. The pressing device 2 includes two straight-through shoe presses. , front drying device 3, film transfer sizing machine 4, post drying device 5, hard calendering device 6, curtain coater 7, curtain coating post drying device 8, blade coater 9, Drying device 10 after blade coating, soft calendering device 11 , cooling device 12 , winding forming device 13 .

Example 1

Four-fold wire coated kraftboard production equipment, including a four-fold wire forming device 1 sequentially installed on the frame, a pressing device 2, the pressing device 2 includes two straight-through shoe press devices, and a front drying device 3 , the front drying device 3 is a drying cylinder, and the drying cylinder includes three single-hanging arrangement drying cylinders and four double-hanging arrangement drying cylinders, a film transfer sizing machine 4, a post-drying device 5, a hard calendering device 6. Two-curtain curtain coating machine 7, drying device after curtain coating 8, blade coating machine 9, drying device after blade coating 10, soft calendering device 11, cooling device 12, coiling Forming device 13.

The working principle of the utility model is as follows: the prepared bottom layer slurry, core layer slurry, liner layer slurry and surface layer slurry are respectively compounded by a four-fold wire forming device 1 to make base cardboard, and the base cardboard is pressed The two straight-through shoe presses of device 2 press to remove moisture, and the pressed cardboard is dried by the front drying device 3 and firstly passed through the film transfer sizing machine 4 for double-sided sizing or bottom sizing and surface layer coating. Then go through a hard calendering device 6 to carry out hard calendering, after passing through the curtain coater 7 to carry out two curtain type curtain coatings, after the curtain coating, the drying device 8 is dried, and then coated with a doctor blade. The machine 9 performs a doctor blade coating, and after the doctor blade coating, the drying device 10 is dried, and finally the soft calendering device 11 performs soft calendering, and after being cooled by the cooling device 12, it is coiled and formed on the coiling forming device 13 .

Claims (4)

1. The four-fold wire coated kraftboard production equipment is characterized in that it includes a four-fold wire forming device, a pressing device, a front drying device, a film transfer sizing machine, a post drying device, Hard calendering device, curtain coater, drying device after curtain coating, blade coater, drying device after blade coating, soft calendering device, cooling device, coiling and forming device. 2. The four-fold wire coated kraftboard production equipment according to claim 1, characterized in that: said pressing device comprises two straight-through shoe presses. 3. The four-fold wire coated kraft cardboard production equipment as claimed in claim 1, characterized in that: the front drying device is a drying cylinder, and the drying cylinder includes three single-hanging drying cylinders and four double-hanging drying cylinders. Hang and arrange drying cylinders. 4. The four-fold screen coated kraft cardboard production equipment as claimed in claim 1, characterized in that: the curtain coater comprises two curtain coaters.

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