Light and thin TPU multi-layer effect color-changing car cover and preparation process thereof
A preparation process, light and thin technology, applied in the direction of film/sheet release coating, coating, pressure-sensitive film/sheet, etc., can solve the problems of poor durability of protective film, insufficient film material, glue residue, etc. The effect of smoothing, good modulus and strength, low yellowing index
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preparation example Construction
[0046] A preparation process for light and thin TPU multi-layer effect color-changing car clothing is characterized in that it comprises the following steps:
[0047] (1) Forming the TPU substrate layer: configuring raw materials, the raw material components include polyether-polyester copolymer with a hardness of 80-95A or 80-90 parts of thermoplastic aliphatic polyurethane elastomer with a hardness of 85-95A, slip agent 1 ~7 parts, 0.5~2 parts of transparent masterbatch, all raw materials are melted and extruded into a film forming process to obtain a TPU substrate layer with a thickness of 120um;
[0048] (2) Form the upper or lower multi-layer effect color-changing layer: configure raw materials, the raw material components include 50-60 parts of solid resin, 30-60 parts of dimethylformamide, 5-40 parts of methyl ethyl ketone, solid pigment 1-40 parts, 0.5-10 parts of functional material powder, 0.5-5 parts of wetting accelerator to form a composite layer. After the raw ma...
specific Embodiment approach
[0061] Such as figure 1 Shown is a structural schematic diagram of one of the TPU effect color-changing car clothing protective films provided by the present invention, including a TPU base material layer, and a release protective layer, a multi-functional protection layer, and a multi-functional protective film are sequentially arranged on the upper surface of the TPU base material layer layer, multi-layer effect color change layer, glue layer and anti-adhesive layer are arranged sequentially from top to bottom on the lower surface of the TPU substrate layer.
[0062] In a preferred embodiment of the present invention, the release protective layer is a random copolymerized PET film with a thickness of 50um, which has the functions of isolation, antifouling, dustproof and stretchable coverage, and protects the multifunctional protective layer before use. . The multi-functional protective layer is a polyacrylate system coating with a thickness of 10um, which can increase the h...
Embodiment 1
[0086] This program provides a manufacturing process of coral blue single-color-changing light and thin TPU effect color-changing car clothing, as follows:
[0087] First form the TPU substrate layer, raw material formula: 89 parts of thermoplastic aliphatic polyurethane elastomer system, 3 parts of slip agent, 2 parts of transparent masterbatch. Mix the raw materials of the TPU substrate layer evenly and dry them in a blower dryer at 80°C for 2 hours. After the temperature of each zone of the barrel of the compound extruder rises to 165°C in the first zone of the barrel, 170°C in the second zone of the barrel, and 170°C in the second zone of the barrel, Zone 180°C, screen change zone 1 zone 160°C, screen change zone 2 zone 180°C, die head 1 zone 180°C, die head 2 zone 180°C, die head 3 zone 180°C, die head connection zone 180°C, machine head The temperature of the mold is raised to 210°C, and then the raw material particles are added for melting and plasticizing, extrusion an...
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Abstract
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