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3 thoughts on “What are the different materials for making bags and OPP?”
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Why do I always admit wrong
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In terms of touch, OPP will appear more crispy and hard, and PP is more soft
The transparency, OPP transparency is better, the transparency of PP is slightly worse, and now the transparency of PP is also a bit high. It can be close to OPP
PP chemical name: polypropylene English name: (PP for short). The so -called PP bag is a plastic bag made of polypropylene as a material. It is generally used in color printing, plastic printing technology, bright color, and generally weave bags. kind. It is non -toxic, tasteless, smooth and transparent. It is easy to burn, the flame situation is melting, yellow and blue, less smoke after fire, and continues to burn. It is mostly used in the packaging of various industries such as cosmetics, food, toys, clothing, stationery, electronics, and hardware products. PP is a crystal -shaped high polymer. The PP in plastic is the lightest, and the density is only 0.91g/cm3 (smaller than water). In general plastic, the heat resistance of PP is the best, and its thermal deformation temperature is 80-100 ° C, which can be cooked in boiling water. The material of the material is transparent, excellent quality, and good toughness. Because of its hard and crisp material, it determines that it is only suitable for packaging and unsuitable bearing.
but PP also has certain disadvantages: low size accuracy, insufficient rigidity, poor weather resistance, and "copper harm". It has a post -contraction phenomenon. After the mold is processed, it is easy to aging, brittle, and deformation.
oPP chemical name: Direct polypropylene English name: Oriented (OPP for short), o is Oriented, the meaning of direction, two -way polypropylene (BOPP) is sometimes collectively referred to as OPP. OPP is a targeted stretch polypropylene film, which has the characteristics of high transparency and brittle. The folding side of the OPP single -sided side seal the edge of the side and the tongue of the open tongue has a self -stick seal. After folding your tongue, you can use it for easy use, beautiful and generous, and widely use in clothing, food, printing, stationery, cosmetics, paper and other industries. Various patterns and butterfly holes and airplane holes can also be printed according to customer needs.
PP Chemical Name: Polypropylene English Name: (PP) PP is a crystalline high polymer. The PP is the lightest in plastic, and the density is only 0.91g/cm3 (smaller than water). In general plastic, the heat resistance of PP is the best, and its thermal deformation temperature is 80-100 ° C, which can be cooked in boiling water. PP has a good resistance to crackedness, with high bending fatigue life, commonly known as "folding glue". The comprehensive performance of PP is better than PE material. PP products are light quality, good toughness, good chemical resistance. The disadvantages of PP: low size accuracy, insufficient rigidity, poor weathering, and "copper harm" easily. It has a post -contraction phenomenon. After the mold is removed, it is easy to aging, brittle, and deformation. In daily life, the commonly used fresh -keeping box is made of PP material. OPP is the directional polypropylene. O should mainly refer to the production process!
opp: Direction, extended polypropylene, is a type of polypropylene
and two -way polypropylene (BOPP)
OPP Main Product:
opP tape: with polypropylene film as a substrate material With the advantages of high -resistant tensile strength, light quality, non -toxic and tasteless, environmental protection, wide range of use, NOPP bottle: light weight, low cost, improved transparency, good heat resistance, suitable for heat irrigation. In recent years, the two -way polypropylene (OPP) transparent bottle has become the selection of the PET bottle
OPP membranes have higher tensile stretching, tightness, transparency, gloss, printing performance, etc. than ordinary PP membranes, etc. The price is naturally higher, and the specifications are different. The sealing of the OPP membrane is more than double the traditional membrane, so that the moisturizing and freshness of its products are stronger, and the preservation time is longer.
PP bag is a plastic bag made of polypropylene as a material. It is generally used in color printing, plastic printing technology, bright color, and generally weave bags. In addition One. It is non -toxic, tasteless, smooth and transparent. It is easy to burn, the flame situation is melting, yellow and blue, less smoke after fire, and continues to burn. It is mostly used in the packaging of various industries such as cosmetics, food, toys, clothing, stationery, electronics, and hardware products. The color is transparent, excellent quality, and good toughness, because of its hard and crisp material, it determines that it is only suitable for packaging and unsuitable load.
OPP is a targeted stretch polypropylene film, which has the characteristics of high transparency and brittle. The folding side of the OPP single -sided side is sealing the side and the tongue is sticking to the tongue. After the protective skin, the tongue can be folded firmly. It is convenient, beautiful and generous, and is widely used in clothing, food, printing, stationery, cosmetics, paper and other industries. Various patterns and butterfly holes and airplane holes can also be printed according to customer needs.
PP bag and OPP bag: PP rubber bag belongs to the more transparent one in the plastic bag of the film. Generally, there are more outsourced packages for products. OPP rubber bag has crispy texture and high brightness. If there is no gap, it is difficult to tear, but there is a gap that you can tear it out without any strength. It is easy to explode when there is a problem with the raw material, or if there is a problem with the raw materials, but if the general items are not specially required, there are generally no problems. There are two forms of the sealing edge. , The other is to prevent explosion -proof edges. In fact, the two methods are the same when they are produced, but because of the positive and anti -knife, the process process of OPP rubber bags. Generally speaking If you are printed, you can print it. If you do n’t print it, you will directly fold it. Add sticky glue and white pearl film according to the requirements of the order. Then you can cut it directly, then punch the hole according to the customer's requirements, and then pack it out. goods. The application range of OPP rubber bags is like greeting cards, jewelry, leather goods, clothing, etc. The traces of OPP rubber bags are often seen.