Special PE-coated paper and preparation method thereof
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A technology of coated paper and aluminized film, applied in the field of papermaking, can solve the problems of rough surface, poor bonding ability, single color, etc., and achieve the effect of clear lines, no scalding, and bright color.
Inactive Publication Date: 2014-11-19
GUANGZHOU HENGRUI NON WOVEN FABRIC
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Problems solved by technology
In the traditional method of making coated paper, polyethylene is directly coated on the surface of the substrate, resulting in a thicker polyethylene forest film layer, and the bonding ability between the polyethylene coating layer and the substrate is poor. , the obtained coated paper has low peel strength, poor stability and single color
[0003] The color layer of the existing colored coated paper is made of dyed colored base paper, but due to the problems of poor color and gloss in the dyed base paper, the surface color of the produced coated paper is not bright enough, and the surface is rough , poor wear resistance
[0004] Generally speaking, the coated paper currently on the market has the following deficiencies: 1. The surface color is not bright enough; 2. The surface is rough and the wear resistance is poor; 3. The peeling strength is low; 4. The breaking strength is poor
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Embodiment 1
[0026] (1) Select suitable materials: use 80G×1.61M kraft paper as the base, low-density polyethylene (hereafter referred to as PE material, MFR index is 6-8), and the PET film is internally colored and aluminized, and the thickness of the film is ×The width is 0.012MM×1.61M.
[0027] (2) Put the selected PE material into the hopper of the coating machine, and initially melt the PE material through 6 barrel areas to increase its fluidity: the first area of the barrel is 178°C, the second area of the barrel is 281°C, and the barrel area is 281°C. The temperature in the third zone is 283°C, the fourth zone of the barrel is 313°C, the fifth zone of the barrel is 319°C, and the sixth zone of the barrel is 321°C. The temperature is on the rise.
[0028] (3) Filter the melted PE material through the filter screen area, and use a 200-mesh filter element to filter, and the temperature of the filter screen area is 323 °C.
[0029] (4) After the PE material is filtered through the ...
Embodiment 2
[0044] (1) Select suitable materials: use 80G×1.61M kraft paper as the base, say that the MFR index of PE material is 6-8, and the OPP film adopts internally colored aluminized film, and the thickness×width of the film is 0.012MM×1.61M Specification.
[0045] (2) Put the selected PE polyethylene material into the hopper of the laminating machine, and initially melt the PE material through 6 barrel zones to increase its fluidity: the first zone of the barrel is 178°C, the second zone of the barrel is 282°C, The temperature in the third zone of the barrel is 283°C, the fourth zone of the barrel is 312°C, the fifth zone of the barrel is 314°C, and the sixth zone of the barrel is 315°C. The temperature is on the rise.
[0046] (3) Filter the melted PE material through the filter screen area, and use a 200-mesh filter element to filter, and the temperature of the filter screen area is 316 degrees.
[0047] (4) After the PE material is filtered through the filter, the non-melting i...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract
The invention discloses special PE-coated paper and a preparation method thereof. The PE-coated paper adopts kraft paper as a base and adopts low-density polyethylene as a bonding medium, and an aluminum laminated film and the kraft paper are bonded together; the preparation method comprises the following steps: arranging the aluminum laminated film at a front station, arranging the kraft paper at a rear station, and arranging the low-density polyethylene at a middle station, melting at 175-330 DEG C in a machine barrel, filtering by a filter, casting a PE film through a high-temperature casting manner of a die head at 310-330 DEG C, bonding the aluminum laminated film and the kraft paper by the cast PE film, and pressing, carrying out knurling and shaping instantly by a refrigerating knurling roll and a refrigerating silicone rubber roll. When the prepared special PE-coated is slightly torn in different environments of 0-35 DEG C, no layering phenomenon occurs to an aluminum layer, a color layer, a PE layer, a film layer and a kraft paper layer, the film surface color is permanent, the problems of obvious color blackspot and color fading due to high temperature are avoided, and the finished product has no color loss when being wiped by solution.
Description
technical field [0001] The invention belongs to the technical field of papermaking, and in particular relates to a special coated paper and a preparation method thereof. Background technique [0002] Coated paper is widely used in the fields of packaging and printing because of its good oil-proof and waterproof properties. In the traditional method of making coated paper, polyethylene is directly coated on the surface of the substrate, resulting in a thicker polyethylene forest film layer, and the bonding ability between the polyethylene coating layer and the substrate is poor. , the peel strength of the coated paper obtained is low, poor in stability, and single in color. [0003] The color layer of the existing colored coated paper is made of dyed colored base paper, but due to the problems of poor color and gloss in the dyed base paper, the surface color of the produced coated paper is not bright enough, and the surface is rough , poor wear resistance. [0004] In gene...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information
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