Polyester film for being adhered to surface of metal thin plate and manufacture method thereof
A technology of polyester film and metal sheet, which is applied in the field of polyester film, can solve the problems of low molecular migration substances harming the safety of packaged food, delamination and shedding, etc., and achieves the effects of high mechanical strength, excellent barrier performance and low cost.
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Embodiment 1
[0013] Raw material formula:
[0014] Modified polyester bright slices: isophthalic acid modified polyethylene terephthalate, the molar ratio of isophthalic acid is 9%,
[0015] Additive slice: SiO 2 The mass fraction of the powder is 2500ppm, and the matrix is the above-mentioned polyethylene terephthalate modified with isophthalic acid.
[0016] The modified polyester bright slices and additive slices were prepared according to the above formula, and the modified polyester bright slices and additive slices were dried on a fluidized bed at a drying temperature of 135° C. for 4 hours.
[0017] Raw material testing:
[0018] The melting point of the modified polyester bright slice is 210°C-230°C, the glass transition temperature is 60°C-80°C, and the SiO in the additive slice 2 The powder is 2500ppm.
[0019] To make the film:
[0020] After fully mixing 70 parts of modified polyester chips and 30 parts of additive chips, they are extruded through a single-screw extruder...
Embodiment 2
[0024] Raw material formula:
[0025] Modified polyester bright slices: isophthalic acid modified polyethylene terephthalate, the molar ratio of isophthalic acid is 12%,
[0026] Additive slice: SiO 2 The mass fraction of the powder is 3500ppm, and the matrix is the above-mentioned polyethylene terephthalate modified with isophthalic acid.
[0027] The modified polyester bright slices and additive slices were prepared according to the above formula, and the modified polyester bright slices and additive slices were dried on a fluidized bed at a drying temperature of 135° C. for 4 hours.
[0028] Raw material testing:
[0029] The melting point of the modified polyester bright slice is 210°C-230°C, the glass transition temperature is 60°C-80°C, and the SiO in the additive slice 2 The powder is 3500ppm.
[0030] To make the film:
[0031] The manufacturing process is the same as in Example 1.
[0032] Performance Testing:
[0033]
Embodiment 3
[0035] Raw material formula:
[0036] Modified polyester bright slices: isophthalic acid modified polyethylene terephthalate, the molar ratio of isophthalic acid is 15%,
[0037] Additive slice: SiO 2 The mass fraction of the powder is 4000ppm, and the matrix is the above-mentioned polyethylene terephthalate modified with isophthalic acid.
[0038] The modified polyester bright slices and additive slices were prepared according to the above formula, and the modified polyester bright slices and additive slices were dried on a fluidized bed at a drying temperature of 135° C. for 4 hours.
[0039] Raw material testing:
[0040] The melting point of the modified polyester bright slice is 210°C-230°C, the glass transition temperature is 60°C-80°C, and the SiO in the additive slice 2 The powder is 4000ppm.
[0041] To make the film:
[0042] The manufacturing process is the same as in Example 1.
[0043] Performance Testing:
[0044]
[0045]
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Abstract
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