PP bag with OPP bag what is the difference?
PP bag with OPP bag what is the difference? PP chemical name: PP. English name: Polypropylene (PP) PP crystalline polymer, commonly used plastic PP in the light, only 0.91 g\/cm3 density (smaller than water).
In the general plastic, P P had better heat resistance, resistance its thermal deformation temperature is 80-80 ℃, can in the boiling water.
PP has good stress cracking resistance, high bending fatigue life, commonly known as & other;Twist and rubber & throughout;.The comprehensive performance of PP is better than that of PE material.PP products light weight, good toughness, good chemical resistance.
PP disadvantages: low dimensional accuracy, insufficient rigidity, poor weather resistance and easy generation & other;Copper pollution & throughout;After, after it has shrinkage, demoulding, easy to aging, crisp, easy to deformation.
in daily life, the commonly used preservation box is made into PP material.
OPP is oriented polypropylene, O should this mainly refers to the production process.
OPP: orientation, stretching polypropylene, is one of the types of polypropylene and two-way polypropylene (BOPP), OPP main products:
OPP tape: with polypropylene film as the backing material, with high tensile force, qualitative light, non-toxic, tasteless, environmental protection, wide use range, etc.
OPP bottle: light weight, low cost, improve transparency, good heat resistance, suitable for use in hot filling.In recent years, the bidirectional polypropylene (OPP) transparent bottle became the generation of the selected
PP bag with OPP bag difference: PP plastic bags in blown film compared the transparent plastic bag belong to the kind. More than commonly used in the packaging of the products. OPP bag brittle hard, bright degree is high, if there is no gap is hard to tear, but have a bit gap need not use what can tear strength, processing technology adopted eagerly sealing machine, seal cutting edge I wish I had not adjusted the seal cutting machine, or is there is something wrong with the raw material is easy to burst open, but most are special requirements for loading goods, general is no problem, cut the CA - 210 color analyzer sealing side has two forms, one is the line cut line sealing, the other is a kind of explosion-proof cut edge sealing, when in fact two ways to make all the same, but is the knife with the knife, OPP bag process, in general, to cutting and appropriate specifications, then will do the printing printing, no printing if it directly frilled edge, according to the requirements of the order and the viscose with white pearl film, then placed a period of time, will be able to direct seal cutting, then punch, according to the requirements of and packaging for shipment.Like a greeting card, the applicable scope of the OPP bag accessories, leather goods, clothing and so on all to often can see the sign of the OPP bag.