A kind of vapor phase antirust film and preparation method thereof
A gas-phase anti-rust and anti-rust layer technology, used in chemical instruments and methods, synthetic resin layered products, layered products, etc., can solve problems such as unsatisfactory tensile strength, environmental pollution to humans and animals, and poor gas barrier properties.
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[0038] The present invention also provides a method for preparing a vapor phase antirust film, which is extruded by multi-layer co-extrusion equipment. The melt extrusion temperature of the first film layer is 160°C-210°C; the melt extrusion temperature of the second film layer is 160°C-210°C; the melt extrusion temperature of the first elastic layer is 160°C-200°C; the melt extrusion temperature of the barrier layer is 200°C-230°C; the melt extrusion temperature of the second elastic layer is 160°C-200°C °C; the melting extrusion temperature of the first anti-rust layer is 160 °C-210 °C; the melting extrusion temperature of the second anti-rust layer is 160 °C-210 °C.
[0039] In order to have a further understanding and recognition of the technical solution of the present invention, several preferred embodiments are listed to further describe it in detail.
Embodiment 1
[0041] Using multi-layer co-extruded high barrier film production equipment, after batching, premixing and process setting. Prepare the anti-rust film through a seven-layer co-extrusion die, from top to bottom in order from the first layer to the seventh layer, with a total thickness of 50 μm:
[0042] The first layer (first film layer) by weight, 50 parts of linear low-density polyethylene (LLDPE), 50 parts of low-density polyethylene (LDPE), 50 parts of metallocene polyethylene (mPE), and the layer thickness is 5 μm ; The melting and extrusion temperature of the first layer is preferably 160° C.;
[0043] The second layer (the second film layer) is by weight, 90 parts of low-density polyethylene (LDPE), 10 parts of metallocene polyethylene (mPE), and the layer thickness is 10 μm; the melting and extrusion temperature of the second layer are preferably 160°C;
[0044] The third layer (the first elastic layer) is composed of ethylene-vinyl acetate copolymer (EVA) resin with ...
Embodiment 2
[0050] Using multi-layer co-extruded high barrier film production equipment, after batching, premixing and process setting. Prepare the anti-rust film through a seven-layer co-extrusion die, from top to bottom in order from the first layer to the seventh layer, with a total thickness of 80 μm;
[0051] The first layer (the first film layer) is by weight, 45 parts of linear low-density polyethylene (LLDPE), 25 parts of low-density polyethylene (LDPE), 30 parts of metallocene polyethylene (mPE), and the thickness is 5 μm; The melting and extrusion temperature of one layer is preferably 180°C;
[0052] The second layer (second film layer) by weight, low density polyethylene (LDPE) 90 parts, metallocene polyethylene (mPE) 10 parts, thickness 20 μ m; The melting and extrusion temperature of the second layer is preferably 160 ℃;
[0053] The third layer (the first elastic layer) is composed of ethylene-vinyl acetate copolymer (EVA) resin with a thickness of 5 μm; the melting and e...
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Abstract
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