A kind of low temperature heat sealing polyolefin film and preparation method thereof
A low-temperature heat-sealing and polyolefin technology, applied in chemical instruments and methods, synthetic resin layered products, layered products, etc., can solve the problems of low initial sealing temperature and heat-sealing strength, and achieve ultra-low initial sealing temperature, High heat-sealing strength and the effect of improving processing fluidity
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Embodiment 1
[0046] A low-temperature heat-sealing polyolefin film, comprising a corona layer, a core layer and a heat-sealing layer from top to bottom; the corona layer is PP resin without processing aids, and the core layer is composed of: homopolymer Polypropylene 97.5wt%, blocking agent 0.1wt%, smooth agent 2.4wt%; Its composition of described heat-sealing layer is: PBE elastomer 70wt%, metallocene linear low density polyethylene 19wt%, LDPE 5wt%, Nano silicon dioxide 1.0wt%, smooth agent 5.0wt%.
[0047] The low-temperature heat-sealing polyolefin film, wherein, the ratio of each layer is: corona layer 8wt%, core layer 84wt%, heat-sealing layer 8wt%.
[0048] The preparation method of low-temperature heat-sealing polyolefin film as mentioned above, concrete steps are:
[0049] (1) The raw materials of corona layer, core layer and heat-sealing layer are measured according to the formula ratio and mixed evenly;
[0050] (2) Add the three mixed raw materials into the extruder of the co...
Embodiment 2
[0053] A low-temperature heat-sealing polyolefin film, comprising a corona layer, a core layer and a heat-sealing layer from top to bottom; the corona layer is PP resin without processing aids, and the core layer is composed of: homopolymer 98wt% polypropylene, 0.2wt% anti-blocking agent, 1.8wt% smoothing agent, the raw material composition of the heat-sealing layer is: 45wt% PBE elastomer, 49wt% metallocene linear low density polyethylene, 3wt% LDPE, nano Silicon dioxide 1.0wt%, slip agent 2.0wt%.
[0054] The low-temperature heat-sealed polyolefin film has a ratio of each layer: 10wt% of the corona layer, 80wt% of the core layer, and 10wt% of the heat-sealing layer.
[0055] The preparation method of low-temperature heat-sealing polyolefin film as mentioned above, concrete steps are:
[0056] (1) The raw materials of the three layers of corona layer, core layer and heat-sealing layer are measured according to the formula ratio and mixed evenly;
[0057] (2) Add the three mix...
Embodiment 3
[0060] A low-temperature heat-sealing polyolefin film, comprising a corona layer, a core layer and a heat-sealing layer from top to bottom; the corona layer is PP resin without processing aids, and the core layer is composed of: homopolymer 98.5wt% polypropylene, 0.3wt% anti-blocking agent, 1.2wt% slippery agent, the raw materials of the heat-sealing layer consist of: 45wt% PBE elastomer, 45wt% metallocene linear low-density polyethylene, 4wt% LDPE, Nano silicon dioxide 3.0wt%, smooth agent 3.0wt%.
[0061] The low-temperature heat-sealed polyolefin film has a proportion of each layer: 15wt% of the corona layer, 70wt% of the core layer, and 15wt% of the heat-sealing layer.
[0062] The preparation method of low-temperature heat-sealing polyolefin film as mentioned above, concrete steps are:
[0063] (1) The raw materials of the three layers of corona layer, core layer and heat-sealing layer are measured according to the formula ratio and mixed evenly;
[0064] (2) The three ...
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