Protective film and preparation method and application thereof
A technology of protective film and protective layer, applied in the direction of film/sheet adhesive, adhesive type, polyurea/polyurethane adhesive, etc. To avoid problems such as obvious printing, to avoid sticking and anti-warping, to avoid the effect of yellowing, and to resist nail printing
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[0029] see figure 2 On the other hand, the present invention also provides a method for preparing the protective film 1 as described above, the method comprising the following steps:
[0030] S1: Provide a protective layer;
[0031] S2: forming a hardened layer on the protective layer;
[0032] S3: forming a first substrate layer on the hardened layer;
[0033] S4: forming a photocurable adhesive layer on the first substrate layer;
[0034] S5: forming a second substrate layer on the photocurable adhesive layer;
[0035] S6: forming an organic silica gel layer on the second substrate layer;
[0036] S7: forming a release layer on the organic silica gel layer;
[0037] Wherein, the photocurable adhesive layer 14 contains acrylic acid monomers or acrylic oligomers with a functionality greater than or equal to 6.
[0038] In steps S1-S7, the forming method can be realized by using conventional coating, compounding, curing and other processes.
[0039] see image 3 A prot...
Embodiment 1
[0042] like Figure 1 to Figure 3 As shown, a protective film 1 of this embodiment has a multilayer structure, including a protective layer 1, a hardened layer 12, a first substrate layer 13, a photocurable adhesive layer 14, a second substrate layer 15, organic silica gel Layer 16, release layer 17.
[0043] The photocurable adhesive layer 14 has a thickness of 30um, 50 parts of hydroxyl-containing acrylic resin masterbatch, 2 parts of hexamethylene diisocyanate curing agent, 50 parts of dipentaerythritol hexaacrylate, 2-hydroxy-2-methyl-1 - 1 part of phenylacetone, 30 parts of solvent ethyl ester.
[0044] The first substrate layer 13 is an SRF film with a thickness of 55um, a transmittance of 90.2%, a haze of 0.7%, and a phase difference φ>8000.
[0045] The second substrate layer 15 is an aliphatic TPU film with a thickness of 25um, a Shore hardness of 65D, a transmittance of 91.2%, and a haze of 0.5%.
[0046] The hardened layer 12 is a fluorine-containing acrylic hard...
Embodiment 2
[0052] like Figure 1 to Figure 3 As shown, a protective film 1 of this embodiment has a multilayer structure, including a protective film layer 1, a hardened layer 12, a first substrate layer 13, a photocurable adhesive layer 14, a second substrate layer 15, an organic Silica gel layer 16, release layer 17.
[0053] The photocurable adhesive layer 14 has a thickness of 50um and includes 50 parts of hydroxyl-containing acrylic resin masterbatch, 100 parts of 15-functionality polyester acrylate, 3 parts of isophorone diisocyanate curing agent, 1-hydroxycyclohexylphenylmethanol 2 parts of ketone, 30 parts of solvent toluene.
[0054] The first base material layer 13 is a PET film with a thickness of 50 um and an alignment angle of 45°, with a transmittance of 90.3% and a haze of 0.9%.
[0055] The second substrate layer 15 is an aliphatic TPU film with a thickness of 35um, a Shore hardness of 70D, a transmittance of 91.2%, and a haze of 0.5%.
[0056] The hardened layer 12 is...
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Abstract
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