A kind of flexible color printing composite packaging material and its production process

Abstract

The invention belongs to the technical field of a packaging material, and particularly relates to a flexible color printing composite packaging material and a production process thereof. The flexible color printing composite packaging material consists of a PE (polyethylene) printing film layer, a printing pattern layer, an adhesive layer and a milky white PE film layer which are sequentially distributed, and the packaging material is characterized in that patterns are printed on the inner surface of a transparent film through an internal printing way, the safety risk of the ink pollution can be thoroughly prevented, the printing saturation and fineness can be improved, and the reliable sealing strength is also realized under the high-speed packaging condition. The production process comprises the steps of film production, printing, compounding, curing, coiling and the like. Two layers of PE are compounded, a corona layer and a printing layer are compounded between the two PE layers, the inner surface and the outer surface of the packaging material are respectively a heat sealing layer, so that a good heat sealing property under the high-speed packaging condition can be guaranteed. The printing ink is compounded in the material, the ink is not contacted with exterior, the ink dropping risk and the product pollution risk can be completely prevented, and sanitation and safety can be realized.

Description

technical field [0001] The invention belongs to the technical field of packaging materials, and in particular relates to a flexible color printing composite packaging material and a production process thereof. Background technique [0002] Taking diapers as an example, the existing packaging materials are basically single-layer milky white PE film, and the pattern is printed (surface printed) on the corona surface of the single-layer film, and then coated with varnish to protect the printed pattern. The disadvantages of this film are mainly manifested in: [0003] 1) This kind of packaging bag is packaged in the form of sandwiching the bottom. In order to be beautiful and easy to carry, the four corners of the package are made by clamping the edge. Heat sealing is also carried out at the clamping edge. When heat sealing at the clamping edge, it is external to external, that is, the corona surface is heat sealed to the corona surface. Moreover, there are patterns printed o...

AI Technical Summary

Problems solved by technology

Moreover, there are patterns printed on the corona surface, so when the bag-making speed is fast, false seals and poor heat seals are prone to occur.

[0004] 2) Because the corona surface is eagerly cut at the included corner, in order to improve its sealing strength as much as possible, therefore, the surface cannot print patterns at the included corner where heat sealing is required

[0006] 4), single appearance, high production consumption, fading and fading, low packaging efficiency