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The essence of this issue is about the dimensional stability of the film at high temperatures.

LD PACK’s packaging with MDOPE is used high density polyethylene (HDPE) as the main raw material, which has good temperature resistance and good dimensional stability.

       Due to the regional and seasonal differences in the sales of packaging bags, and some packaging bags need to be frozen and refrigerated at low temperatures (generally, the storage conditions at -30°C ~ -20°C are called cryopreservation, while at -5°C The storage condition of ~0°C is called refrigerated storage), and cold resistance (low temperature resistance) is a key characteristic of the packaging material at this time.

Abstract: PVA coating can make the materials perform good barrier to O2, N2, CO2 and other gas or small molecule volatiles. This article mainly introduces the application characteristics and development prospects of PVA coating in PE//PE mono-material packaging.

Gravure printing, abbreviated as gravure, features thick ink layers, vibrant colors, high saturation, high print durability, stable print quality, and fast printing speed. Therefore, gravure printing has always been the primary printing method in the domestic flexible packaging printing industry.

 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: