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Dengan pesatnya perkembangan industri takeout, permintaan masyarakat terhadap kotak makan juga semakin meningkat, dan permintaan akan kotak makan juga semakin tinggi.
PP, also known as polypropylene, has certain mechanical and thermal properties and Gulungan lembaran PP is suitable for food packaging, so food boxes are usually made of polypropylene sheets.
In view of the poor insulation effect of existing food box made of lembaran polipropilen, the purpose is to propose a high-barrier PP multi-layer co-extrusion sheet, with the help of the insulation property of the first PP layer of EVOH high barrier sheet roll, the first adhesive layer of EVOH high barrier sheet rolland the insulation layer of EVOH high barrier sheet roll, to improve the insulation effect of high-barrier PP co-extrusion sheet.
The utility model relates to a high-barrier PP multi-layer co-extrusion sheet, including the first PP layer, which is characterized in that one side of the first PP layer is covered with an insulation layer, and the first adhesive layer is arranged between the insulation layer and the first PP layer. The thickness ratio of the first PP layer, the first adhesive layer and the insulation layer is 2:1:4.
By adopting the above technical scheme, the meal box made of the co-extrusion sheet is placed in the meal box, and the meal is insulated through the insulation layer, the first adhesive layer and the first PP layer.In addition, the first adhesive layer is set between the first PP layer and the insulation layer. Before the first PP layer of high barrier sheet roll and the insulation layer are squeezed together by co-extrusion, the staff can bond the first PP layer and the insulation layer together through the first adhesive layer.In this way, it greatly facilitates the production of the co-extrusion profile, improves the tightness of the first PP layer and the insulation layer after the co-extrusion, and improves the insulation effect of the co-extrusion sheet.
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