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The difference between PE plastic bag and PP plastic bag PO plastic bag

The difference between PE plastic bag and PP plastic bag PO plastic bag

  • Categories:Company News
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  • Time of issue:2021-01-19 15:45
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(Summary description)PE and PP are the English abbreviations of raw materials. The chemical name of PE is linear polyethylene, which is divided into two types. One is high-density linear polyethylene, which we usually call PO---HDPE, and the other is low-density Linear polyethylene is what we usually call PE---LDPE. In fact, this low-density linear polyethylene is also divided into two types, LDPE and LLDPE (we will call them the main material and the auxiliary material respectively, but for plastic bags When the two are used together). The chemical name of PP is polypropylene, and there is no more detailed distinction. When signing the contract, there are three kinds of raw materials: LDPE/LLDPE/PP. The finished product is PE plastic bag (PO plastic bag is Without export name) and PP plastic bags.

The difference between PE plastic bag and PP plastic bag PO plastic bag

(Summary description)PE and PP are the English abbreviations of raw materials. The chemical name of PE is linear polyethylene, which is divided into two types. One is high-density linear polyethylene, which we usually call PO---HDPE, and the other is low-density Linear polyethylene is what we usually call PE---LDPE. In fact, this low-density linear polyethylene is also divided into two types, LDPE and LLDPE (we will call them the main material and the auxiliary material respectively, but for plastic bags When the two are used together). The chemical name of PP is polypropylene, and there is no more detailed distinction. When signing the contract, there are three kinds of raw materials: LDPE/LLDPE/PP. The finished product is PE plastic bag (PO plastic bag is Without export name) and PP plastic bags.

  • Categories:Company News
  • Author:
  • Origin:
  • Time of issue:2021-01-19 15:45
  • Views:
Information
PE and PP are the English abbreviations of raw materials. The chemical name of PE is linear polyethylene, which is divided into two types. One is high-density linear polyethylene, which we usually call PO---HDPE, and the other is low-density Linear polyethylene is what we usually call PE---LDPE. In fact, this low-density linear polyethylene is also divided into two types, LDPE and LLDPE (we will call them the main material and the auxiliary material respectively, but for plastic bags When the two are used together). The chemical name of PP is polypropylene, and there is no more detailed distinction. When signing the contract, there are three kinds of raw materials: LDPE/LLDPE/PP. The finished product is PE plastic bag (PO plastic bag is Without export name) and PP plastic bags.
 
The raw materials of bubble bags and bone bags are all PE materials, which are synthetic materials of LDPE and LLDPE. Plastic bags used in general factories are also PE plastic bags, such as electronics factories, electrical appliances factories, hardware factories, plastic factories, clothing factories, Shoe factory etc.
 
The application of PE plastic bags is very wide. The film used by farmers in spring plowing is also PE material. PE plastic bags look transparent, feel very smooth, have little soft noise and have good toughness (this is LLDPE at work).
 
The PP plastic bags are mostly used for gift packaging, as well as the sale of finished clothing. The new clothes we buy are packaged in plastic bags and have a double-sided adhesive seal. They are usually PO plastic bags. PP plastic bags are very transparent. It feels slippery to the touch, but it is very hard, loud and brittle. Fold it in half and there will be creases. Folded PE plastic bags will not. Because of the good transparency, it looks high-grade when packaging gifts .
 
PP plastic bags are very similar to PO plastic bags, but the transparency is not as good as PO, so PP plastic bags have more advantages than PO plastic bags. In the past, PP materials are more expensive than PE materials. In the past two years, due to the rising oil prices, The cost of our plastic bags has also risen a lot. But I don't know why, PE material is more tightly sold than PP material, and the price has exceeded the price of PP material.
 
As for the PO plastic bag, it also has its particularity. It can be very thin and thin. According to our current mastering technology, 1 silk can be produced, while the thinnest PE and PP can only be 2 silks, PP even Not yet, this PO price advantage is even more obvious. However, the PO plastic bag is almost white, and the use is relatively small.

More information

Due to the moisture absorption of nylon film and the series of adverse consequences caused by moisture absorption, there are certain requirements for the environment of paper-plastic packaging manufacturers. Generally, it should be stored at about 23°C, ±3°C, and the dry humidity difference is ideal within the range of 60%RH±5%RH. The nylon membrane cannot be placed directly on the floor or in the open air to avoid moisture absorption. The difference between dry and wet in the production environment generally does not exceed 75% RH. If it reaches 80% RH, production should be stopped (especially compound production) to avoid bad causes. If the task must be put into production, exhaust fans and dehumidifiers can be added to the production site to enhance indoor air circulation and reduce the humidity of the production environment to below 70%RH for reproduction. In short, when the humidity exceeds 70%RH, you must use it with caution. When the temperature is low or the humidity is too high, you must turn on the preheating equipment of the printing and laminating machine, first preheat the nylon film, and dry it on the surface of the nylon film. In order to facilitate the smooth progress of printing and composite production; at the turn of winter and spring, due to large temperature changes, when using mixed solvents, pay attention to effective adjustments with changes in temperature to prevent solvents from evaporating too fast or residual solvents. More quality accidents.
In addition to containing and sealing the product, a packaging bag is more important to isolate the product from the outside world to protect the product. In addition, the molecular interaction between the packaging material itself and the product causes the product to deteriorate, which has become a problem that the packaging bag manufacturer needs to solve. This article focuses on explaining how we solved this problem. Packaging bag manufacturers generally use PE material film in direct contact with the product. So, what is a PE material film?
Plastic packaging bag manufacturers tell us that we need to pay more attention to the later stage of manufacturing products, because the product will over-harden if you are not careful. This phenomenon occurs because the proportion of ingredients has not been properly handled. Today we will understand how to prevent it. The appearance of hardening.
Will the vacuum food packaging bag wrinkle? How to solve it? 1. Replace the qualified film. 2. Adjust the position of the film so that it does not deflect during the conveying process. 3. Adjust the amount of glue applied and apply glue evenly. 4. Adjust the process parameters to make the adhesive fully dry and reduce the residual amount of solvent. 5. The composite film should be fully cooled before rewinding. 6. Adjust compound pressure. 7. Adjust the tension of unwinding and rewinding to match the tension of each part. 8. Adjust the parallelism of each guide roller. 9. Clean the surface of each guide roller and replace the damaged guide roller to ensure that the surface of the guide roller is flat, smooth and clean.
Among the applied materials of plastic packaging bags, there are often three-layer, five-layer, seven-layer, and nine-layer composite films. What is the difference between different layers of composite film? 5 layer and 3 layer comparison
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