Steaming and boiling-resistant multi-layer composite aluminum-foil paper and production method thereof

Abstract

The invention belongs to the technical field of aluminum foil materials, and particularly relates to steaming and boiling-resistant multi-layer composite aluminum foil paper and a production method thereof. According to the steaming and boiling-resistant multi-layer composite aluminum-foil paper provided by the invention, a waterproof film layer, a first bonding layer, a paperboard layer, a second bonding layer, an aluminum foil layer and a resin layer are sequentially arranged from outside to inside, and structural reinforcing strips are arranged in the second bonding layer and the resin layer, so that the purpose that a meal box made of the multi-layer composite aluminum-foil paper is resistant to steaming and boiling and high in structural strength is achieved. The invention further provides a production method of the steaming and boiling-resistant multi-layer composite aluminum foil paper, and the purposes that the fixing positions of the structural reinforcing strips are reasonable and effective and the whole production method is simple and efficient are achieved in the mode that the second bonding layer and the resin layer are jointly, independently and adjustably dried and cured through a single-side blowing type electric heating machine.

Description

technical field [0001] The invention belongs to the technical field of aluminum foil materials, and in particular relates to a cooking-resistant multilayer composite aluminum foil paper and a production method thereof. Background technique [0002] Aluminum foil paper refers to a packaging material whose main structure is aluminum foil. It is often used in the field of food packaging, and the more common ones are heatable food lunch boxes, such as airplane meals. It is precisely because of this purpose that the aluminum foil paper is required to have the characteristics of retort resistance, and to meet the requirements of the specific use environment, which cannot be satisfied by a single layer of aluminum foil, so the composite aluminum foil material appears. [0003] The existing composite aluminum foil paper, its layer structure mainly includes a cardboard layer, glue layer, aluminum foil layer and resin layer, wherein the cardboard layer is used for printing, printing o...

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Problems solved by technology

[0003] The existing composite aluminum foil paper, its layer structure mainly includes cardboard layer, glue layer, aluminum foil layer and resin layer, wherein the cardboard layer is used for printing, printing or decoration, and the resin layer is used for direct contact with food. After all, if aluminum foil Direct contact with food will affect the taste of food

[0004] However, in the process of production and use of the existing composite aluminum foil paper, it is found that there are still many problems: first, the structural strength of the lunch box made of the existing composite aluminum foil paper is insufficient, and the lunch box is under relatively small pressure. It will be flattened, and if it is used again, the indentation is more likely to be bent and deformed; second, in the production process of the existing composite aluminum foil paper, both the glue layer and the resin layer need to be heated and cured, and if the introduction of reinforced The structural strength of the composite aluminum foil lunch box has higher requirements for the above-mentioned heating and curing operation, which cannot be satisfied by the existing ordinary heating equipment

[0009] However, the drying device in this utility model patent cannot dry both sides together, the overall drying speed is not enough, and the drying operation is not comprehensive enough. If the speed is not enough to cause the settlement of the reinforced part, the position of the reinforced part will be off, and the structural strength improvement of the above-mentioned aluminum foil composite paper by the reinforced part will not be obvious in the end.

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