Innovation

 Sealing strength is an important indicator for packaging materials. For any kind of flexible packaging materials, packaging bags must be made to pack various commodities, and the packaged commodities must be sealed by heat sealing or bonding to achieve the purpose of packaging.The seal must have a certain strength to be able to withstand the pressure of a certain content to ensure that the product does not crack during circulation.

The colors given by designers are always PANTONE color code on paper or the CYMK color code on paper. As a matter of fact, intaglio printing sometimes cannot print the colors exactly just like the ones given by designers, because reverse printing is often for plastic printing while surface printing for paper printing, and their base color are different.

Seal failure occurs when certain factors prevent the areas that should have been joined through heat sealing from properly bonding. The common causes of seal failure are as follows:

Abstract: After stretching process, the PE film has greatly improved the tensile strength, straightness, light transmittance, haze, barrier properties. This article introduces three type PE stretched films with different processes, including casting MDOPE film, blow MDOPE film and BOPE film.

CPP film is a non - tensile, non - directional polypropylene film, comparing with polyethylene, CPP film have below characteristics:

Printing serves as the primary means for communication between products packaged in composite flexible packaging and consumers. The main printing methods for flexible packaging are gravure printing and flexographic printing.

1. Manufacturing technique of multi-layer co-extruded film

Generally speaking, multi-layer co-extruded technology is to melt and extrude different resin raw materials with different functions by 5 or more extruders, integrating advantages of various materials. It helps to control cost effectively and adjust the film structure based on demand with wide application scope.