Paper-plastic container and production method thereof

Abstract

The invention discloses a paper-plastic container and a production method thereof. The paper-plastic container consists of an inner film layer, a paper layer, a printed layer and an outer film layer, and is characterized in that: the outer film layer is an extinction biaxially-oriented polypropylene (BOPP) layer; the printed layer is arranged on the inner side of the outer film layer; and the inner film layer is a polyethylene (PE) or polypropylene (PP) layer. The paper-plastic container and the production method thereof have the characteristics of paper surface film-coating uniformity, high anti-permeability, good printing effects, printed pattern drop resistance and no secondary pollution.

Description

technical field [0001] The invention belongs to the technical field of disposable containers, in particular to a paper-plastic container and a production method thereof. Background technique [0002] The current paper-plastic containers are made of two layers of coated film with a paper layer sandwiched between them, that is, the traditional coating process method is to soften the plastic and pour it on the paper. Because the surface of the paper is uneven, it is not easy to pour the plastic on the paper. The thickness will be uneven, which leads to the fact that there is no plastic on the surface of the paper, and the paper-plastic container produced by the laminating process has the problems of poor oxygen resistance and poor permeability resistance, and there will be paper in the container. When the inside or outside of the container is wet, the paper softens and the container loses its stiffness, which cannot guarantee the quality of the container; at the same time, most...

AI Technical Summary

Problems solved by technology

[0002] The current paper-plastic containers are made of two layers of coated film with a paper layer sandwiched between them, that is, the traditional coating process method is to soften the plastic and pour it on the paper. Because the surface of the paper is uneven, it is not easy to pour the plastic on the paper. The thickness will be uneven, which leads to the fact that there is no plastic on the surface of the paper, and the paper-plastic container produced by the laminating process has the problems of poor oxygen resistance and poor permeability resistance, and there will be paper in the container. When the inside or outside of the container is wet, the paper softens and the container loses its stiffness, which cannot guarantee the quality of the container; at the same time, most of the existing paper-plastic containers are printed on the surface or pasted with stickers. The effect is relatively poor, it is easy to fall off, the aesthetics is poor, and it is easy to cause secondary pollution to other containers during transportation and use; although there is currently a process for coating paper on paper, the existing coating layer and coating layer , PE layer, and PP layer cannot be combined to form a seal, which makes it impossible to produce paper-plastic containers by laminating process

Images