Tel: +86 188 2689 9458
source:other news release time:2022-11-22 Hits:
Polyethylene film (PE for short) is a thermoplastic polymer polymerized from ethylene. It has excellent mechanical strength, dielectric property and moisture resistance, and can maintain flexibility and chemical stability at low temperatures. The polyethylene film is colorless, tasteless, odorless, non-toxic and translucent. It does not react with moisture, grease, compounds, etc. It is insoluble in most solvents at room temperature and can withstand a low temperature of - 70 degrees. Good fusion, good permeability to oxygen and carbon dioxide, poor permeability to water vapor.
PE film can generally be divided into:
The density of low density polyethylene (LDPE) is about 0.92g/cm2; The transparency and heat sealing of LDPE film are good, which can prevent water and moisture; However, the tensile strength is low, the tensile elongation is large, and it is easy to wrinkle.
The density of medium density polyethylene (MDPE) is about 0.93 ~ 0.94g/cm2; The properties are between high-density and low-density polyethylene.
The density of high density polyethylene (HDPE) is 0.94-0.965g/cm2; The heat resistance and mechanical strength of high-density pe film are better than those of low-density pe film, and the tensile elongation is small. the film thickness is generally above 0.03 mm, but the transparency is poor.
Generally speaking, with the increase of density, the mechanical properties and barrier properties will be improved accordingly, and the heat resistance and health will be good. Polyethylene with the same density has different properties due to different film forming processes. This is because the salivation method can cool quickly, with low crystallinity, high transparency and low turbidity, but the molecular arrangement tends to be irregular, so the barrier is small, that is, the transmissivity is large, the elongation is low, and the tear resistance is poor.
Untreated pe film is difficult to print. This is because polyethylene is non-polar, chemically stable, insoluble in most solvents, has weak adsorption on ink, and is not firm after the printing is dried. Therefore, it is necessary to make printability treatment on pe film before or during printing.
Read recommendations:
smart food Snack food bag distributors
Popular recommendation
BIB Bag-in-box dispenser with butterfly valve vitop for drinking water wine juice
Pouch with handle
Custom Special Shaped Super Pouch Aluminum Foil 1.5L 3L 5L Stand Up Drink Juice Liquid Pouch With Va
aluminium spout pouch Production
customization Pouch with Handle
bag in box packaging wholesale
Pouch with handle wholesale
eco friendly spout pouches manufacturer
eco friendly spout pouches wholesaler
packaging spout pouch custom
What are the benefits of vacuum rice packaging?
What are the advantages of plastic packaging bags
How to customize the packaging bag
Paper packaging
Is it normal for frozen food packaging bags to bulge?
The development trend of domestic food packaging.vanishing coff packaging bag Processing
A bag is a bag used to pack various articles
juice bag in box Factory.Classification of liquid packaging bags
How to Improve the Market Competitiveness of Food Packaging Bag Manufacturers
What are the advantages of liquid chemical packaging bags in transportation?
Three -layer cowhide paper bag manufacturers
What kind of bacteria is flatulence in food packaging bags generally?mylar bags custom printed
What is the barcode on the product packaging bag.recyclable spout pouches wholesaler
Have you ever cared about the quality of shopping plastic bags?Top-line packaging flexible packaging
What are the types of packaging bags
PET food bag manufacturer.Production process of octagonal sealed food packaging bags
The manufacturer tells you the precautions for using composite food vacuum bags.food packaging produ
Applicable products for sterile liquid packaging bags..stand up pouch with spout packaging
Characteristics of various food packaging materials
Advertising bag classification.bag in box direct sales