Method for mfg. sub light smooth type aluminium plastic compound band
A technology of aluminum-plastic composite belt and production method, which is applied in the direction of chemical instruments and methods, belts, synthetic resin layered products, etc., can solve the problems of high production cost, air leakage, water seepage, etc., and achieve low production cost and reduce production cost , good moisture-proof performance
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Embodiment 1
[0048] The manufacture process of the present invention is as follows:
[0049] 1. Select an aluminum foil with a thickness of 0.12mm±0.005mm as the aluminum base tape, and perform the pre-treatment of casting coating compounding according to the flow chart in Figure 1.
[0050] The process of composite pre-treatment is: firstly, the aluminum base strip roll is opened, then the aluminum base strip L is flattened, and then preheated, the base strip is preheated by an oil heating roller or an electric heating roller, and the temperature is 90-220 ℃.
[0051] 2. Matte smooth extrusion compounding of aluminum base tape and plastic, referring to Figure 2, the compounding process is as follows:
[0052] (1) The aluminum base strip L enters between the first composite pressure roller 1 and the first composite roller 3 .
[0053] The surface of the first composite rubber roller 1 is made of non-metallic material, made of fluoroplastics with a Shore hardness of 40-95, and the first c...
Embodiment 2
[0064] Select aluminum foil with a thickness of 0.10±0.005mm as the aluminum base strip, and make the aluminum-plastic composite strip according to the process of Example 1, wherein:
[0065] The first compound pressing roller 1 adopts non-fluorine plastic roller, so Teflon tape must be pasted on both ends of the non-fluorine rubber roller to prevent the subsequent plastic melt from sticking to both ends of the rubber roller, so as to ensure the normal progress of subsequent rolling and heat sealing .
[0066] When rolling heat sealing, set the working surface temperature of the heat sealing area between the first composite pressure roller 1 and the first composite roller 3 to be 155-290°C, and the outer surface of the composite roller is surface-treated so that the roughness is Ra1.6-25μm, The pressure between the two rollers is 0.12-1.3Mpa. The plastic mold adopts a 2-layer co-extrusion mold. The plastic grade: 0910 resin is used. The melt temperature is 180-305°C, which can...
Embodiment 3
[0069] Select the aluminum foil with a thickness of 0.08 ± 0.005mm as the aluminum base strip, and proceed according to the process of Example 1, wherein:
[0070] The first composite pressing roller 1 adopts a fluoroplastic roller.
[0071] When rolling heat sealing, set the working surface temperature of the heat sealing zone between the first composite pressure roller 1 and the first composite roller 3 to be 140-285°C, and the pressure between the two rollers to be 0.11-0.12Mpa. The outer surface of the composite roller is treated to a roughness of Ra1.6-25μm
[0072] The plastic mold adopts a 3-layer co-extrusion mold, the plastic is 30707 grade, and the melt temperature is 185-310°C, which can form a 3-layer plastic film on one side of the aluminum base tape.
[0073] During the post-heating treatment, the temperature of the tape surface is controlled between the Vicat softening point of the plastic and the melting point of the plastic, that is, 84-102°C, and finally a m...
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