PP plastic beads are considered one of the best plastics on the market today. Has wide application in many different fields. So let's join giaphapdonggoi.net to learn about what is PP plastic? And what are their characteristics and applications? Through the following article.
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1. What is PP Plastic Granules?
PP resin is an acronym for Polypropylene which is a polymer that is the product of the polymerization of Propylene, formed from the distillation of petroleum.
PP granules
Properties of PP plastic granules:
Molecular formula: (C3H6)x
Density: Amorphous PP: 0.85 g/cm3
PP crystalline: 0.95 g/cm3
Elongation: 250 – 700 %
Tensile Strength: 30-40 N/mm2
Impact toughness: 3.28 – 5.9 kJ/m2
Melting point : ~ 165 °C
2. Characteristics of PP granules
PP plastic granules are white transparent, colorless, odorless, tasteless, non-toxic and impermeable to gases. When producing PP plastic beads, they are often mixed with coloring particles to produce finished products with more beautiful and eye-catching colors. When ignited, it will have a light green flame, have a plastic flow and have a rubber-like odor.
PP plastic has the highest thermal stability and can withstand temperatures higher than 100 degrees Celsius and melting temperature of 165 degrees Celsius. However, the sealing temperature of PP bags (140 degrees Celsius), is higher than PE – can cause leakage and damage to the outer structural graft, so PP is rarely used as the innermost layer to store products.
Resistant to oxygen, steam, grease and other gases.
It has high mechanical strength (tear strength and tensile strength), is quite rigid, not as flexible as PE plastic, does not stretch, is easily torn when there is a cut.
With high printing ability, clear print and ink storage because of its transparency and high surface gloss => this plastic bead is used for the production of all kinds of plastic packaging.
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3. PP plastic granules
Currently, on the market, there are 3 popular types of PP plastic beads:
3.1 Primary plastic granules
As plastic beads are made by separating from petroleum through the distillation process, being pure plastic beads without any additives, this plastic bead is a line of quality materials and has high use value.
3.2 Recycled PP plastic granules
Is a plastic resin that is regenerated from old plastic products such as packaging, carpets, membranes, stationery, other PP plastic parts such as: laboratory instruments, speakers, car interior parts, ... and with added ingredients. many additives.
Recycled PP plastic granules
3.3 PP spinning beads
Is a type of plastic beads with high mechanical strength, not stretched, melting temperature up to 100 degrees Celsius. It is very resistant to oxygen, water vapor and grease.
4. Application of PP . plastic beads
PP plastic is one of the safe and popular plastics on the market today. Therefore, PP plastic has many applications in the market:
PP plastic application
Hard and not flexible like other plastics, so it is used for spinning into woven yarns for packaging of woven products into food and grain packaging. With this feature, it is also produced into high-quality carpets.
Used as an outer coating to preserve products, to increase water repellency, air permeability, to create a natural gloss for products for easy printing and easy tearing to open the package.
Used as a cover for the outside of audio equipment or used in microwave ovens.
In addition, PP plastic beads belong to primary plastic beads, so it is very safe and durable, so we can come across products made from them such as water bottles, baby bottles, food storage boxes, food containers, etc. play for children, etc. And are widely used in the laboratory.
Hopefully the information that giaphapdonggoi.net provides above helps you better understand the concept, characteristics and application of PP plastic beads.
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