CPE (chlorinated polyethylene) thin film and production method thereof
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A production method and film technology, applied in the field of packaging materials, can solve the problems of easy formation of scale, affecting heat transfer of cooling rolls, poor cooling effect of cooling rolls, etc., and achieve the effects of simple production process, avoiding heat transfer, and easy operation
Inactive Publication Date: 2017-12-15
CHONGQING RUITING PLASTIC
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Problems solved by technology
However, due to the long-term storage of water in the cavity of the cooling roll, scale is easily formed on the inner wall of the cooling roll, and the existence of scale seriously affects the heat transfer between the cooling roll and water, resulting in poor cooling effect of the cooling roll
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Embodiment 1
[0032] A CPE film, the CPE film is composed of the following raw materials in parts by mass: 60 parts of chlorinated polyethylene, 5 parts of aluminum foil, 15 parts of plasticizer, 3 parts of heat stabilizer, 6 parts of chlorinated paraffin, 6.4 parts of antimony trioxide 5.7 parts of magnesium hydroxide, 3.2 parts of tricresyl phosphate, 1.8 parts of antioxidant, 6 parts of aramid fiber.
[0033] A kind of production method of CPE film, comprises the following steps:
[0034] (1) Preparation of materials for the production of CPE film:
[0035] (2) Mixing and feeding: Mix the materials in step (1) evenly, and then transport the materials to the extruder;
[0036] (3) Extrusion plasticization: heating, heating up to 156°C at a heating rate of 30°C / h, and keeping it for 15 minutes; plasticizing; pressurizing;
[0037] (4) Casting: using T-type head for casting;
[0038] (5) Cooling: Cooling adopts a cooling device, such as figure 1 , figure 2As shown, the cooling device ...
Embodiment 2
[0044] The difference between this example and Example 1 is that the CPE film is composed of the following raw materials in parts by mass: 60 parts of chlorinated polyethylene, 5.9 parts of aluminum foil, 16 parts of plasticizer, 2.5 parts of heat stabilizer, and 6.2 parts of chlorinated paraffin , 6 parts of antimony trioxide, 5 parts of magnesium hydroxide, 3.5 parts of tricresyl phosphate, 2 parts of antioxidant, 4 parts of aramid fiber.
Embodiment 3
[0046] The difference between this example and Example 1 is that the CPE film is composed of the following raw materials in parts by mass: 60 parts of chlorinated polyethylene, 5 parts of aluminum foil, 16 parts of plasticizer, 3 parts of heat stabilizer, and 6.3 parts of chlorinated paraffin , 7 parts of antimony trioxide, 5.3 parts of magnesium hydroxide, 3 parts of tricresyl phosphate, 1.4 parts of antioxidant, and 8 parts of aramid fiber.
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Abstract
The invention belongs to the technical field of packaging materials, and particularly discloses a CPE (chlorinated polyethylene) thin film and a production method thereof. The CPE thin film is prepared from the following raw materials in parts by mass: 60 parts of CPE, 4 to 7 parts of aluminum foil, 12 to 18 parts of plasticizer, 1 to 5 parts of heat stabilizer, 2 to 3 parts of composite flame-retardant agent, 1 to 3 parts of antioxidant, and 4 to 10 parts of aramid fiber. The production method of the CPE thin film comprises the following steps of (1) preparing of materials; (2) mixing and charging of the materials; (3) extruding and plasticizing; (4) flow-casting; (5) cooling: adopting a cooling device, and utilizing compressed air to blow and attach the flow-casting material onto a cooling roll to cool; (6) thickness measuring and controlling; (7) corona treating; (8) slicing; (9) drawing and coiling. The CPE thin film produced by the method has the advantages that the cooling effect of the CPE thin film is good, and the low quality of the thin film due to nonuniform cooling and overhigh cooling temperature can be avoided.
Description
technical field [0001] The invention belongs to the technical field of packaging materials, in particular to a CPE film and a production method thereof. Background technique [0002] CPE film is an unstretched chlorinated polyethylene film made by casting method. This product has the characteristics of light weight, high transparency, strong mechanical adaptability and moisture resistance, and is widely used in the packaging field. [0003] In the production process of CPE film, it needs to go through steps such as batching-mixing-extrusion plasticization-casting-cooling-corona-slitting, among which batching and cooling have an important impact on the performance of CPE film. The cooling temperature of the CPE film needs to be controlled within a certain range. Uneven cooling and high cooling temperature will cause the internal stress concentration of the CPE film and make it easy to tear. At present, the cooling of CPE film is usually carried out in the way of cooling roll...
Claims
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