Diatomite-containing plastic packaging film for selectively absorbing ethylene, and preparation method
A technology of diatomite and packaging film, which is applied in the field of plastic packaging film for selectively adsorbing ethylene and its preparation, can solve the problems of poor safety, poor adsorption effect, poor performance, etc. low performance effect
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[0029] Example 1
[0030] a. Add cuprous chloride to water to make a dispersion, deposit it firmly in the pores of diatomaceous earth through spray deposition, then mix it with olivine powder, and add it to the emulsion, stir evenly, freeze-dry, and make a network Modified diatomite protected by chemical coating;
[0031] b. Mix the modified diatomaceous earth obtained in step a with the matrix resin of the adsorption layer, heat to melt and cast to form a film to obtain an adsorption layer film;
[0032] c. From bottom to top, the foamed shockproof layer, the porous ultrafiltration membrane, the adsorption layer film, and the PET base material layer are bonded and combined to form a plastic packaging film that selectively adsorbs ethylene.
[0033] In step a, the latex liquid is a polyacrylic resin latex liquid with a solid content of 25 wt%; in step b, the matrix resin of the adsorption layer is polypropylene; the bonding compound is an amino resin binder;
[0034] In step a, 7 parts...
Example Embodiment
[0036] Example 2
[0037] a. Add cuprous chloride to water to make a dispersion, deposit it firmly in the pores of diatomaceous earth through spray deposition, then mix it with olivine powder, and add it to the emulsion, stir evenly, freeze-dry, and make a network Modified diatomite protected by chemical coating;
[0038] b. Mix the modified diatomaceous earth obtained in step a with the matrix resin of the adsorption layer, heat to melt and cast to form a film to obtain an adsorption layer film;
[0039] c. From bottom to top, the foamed shockproof layer, the porous ultrafiltration membrane, the adsorption layer film, and the PET base material layer are bonded and combined to form a plastic packaging film that selectively adsorbs ethylene.
[0040] In step a, the latex liquid is a polyacrylic resin latex liquid with a solid content of 25% by weight; in step b, the matrix resin of the adsorption layer is polyvinyl chloride; the bonding compound is an amino resin binder;
[0041] In ste...
Example Embodiment
[0043] Example 3
[0044] a. Add cuprous chloride to water to make a dispersion, deposit it firmly in the pores of diatomaceous earth through spray deposition, then mix it with olivine powder, and add it to the emulsion, stir evenly, freeze-dry, and make a network Modified diatomite protected by chemical coating;
[0045] b. Mix the modified diatomaceous earth obtained in step a with the matrix resin of the adsorption layer, heat to melt and cast to form a film to obtain an adsorption layer film;
[0046] c. From bottom to top, the foamed shockproof layer, the porous ultrafiltration membrane, the adsorption layer film, and the PET base material layer are bonded and combined to form a plastic packaging film that selectively adsorbs ethylene.
[0047] In step a, the latex liquid is a polyacrylic resin latex liquid with a solid content of 25% by weight; in step b, the matrix resin of the adsorption layer is polylactic acid; the bonding compound is an amino resin binder;
[0048] In step a...
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