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Detailed explanation of PE materials commonly used in food packaging

Detailed explanation of PE materials commonly used in food packaging

  • Categories:Company News
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  • Time of issue:2021-01-19 15:55
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(Summary description)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?

Detailed explanation of PE materials commonly used in food packaging

(Summary description)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?

  • Categories:Company News
  • Author:
  • Origin:
  • Time of issue:2021-01-19 15:55
  • Views:
Information
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?
 
PE, full name Polyethylene, is the simplest polymer organic compound and the most widely used polymer material in the world today. It is also the most widely used and most used film type in the packaging industry. PE protective film uses special polyethylene (PE) plastic film as the base material, and is divided into high-density polyethylene protective film, medium-density polyethylene and low-density polyethylene according to the density.
 
The biggest advantage of PE protective film is that the protected product is not polluted, corroded, scratched during production, transportation, storage and use, and protects the original smooth and shiny surface, thereby improving the quality and market competitiveness of the product. .
 
According to the viscosity, it is mainly divided into: ultra low viscosity protective film, low viscosity protective film, medium and low viscosity protective film, medium viscosity protective film, high viscosity protective film, ultra high viscosity protective film
 
1. Ultra-low viscosity protective film (ie, slight bottom adhesion):
 
Characteristics: Thickness (≥0.03m±0.003), width (≤1.3), height (100-1500), base material (PE), peel strength (≤5g/cm), temperature resistance (60), elongation (> 400)
 
Purpose: Easy to use, easy to stick and tear, no glue residue, suitable for organic plates, instruments, displays, glass lenses, plastic lenses, etc.
 
2. Low viscosity protective film
 
Characteristics: Thickness (≥0.03m±0.003), width (≤1.3), height (100-1000), base material (PE), peel strength (10-20g/cm), temperature resistance (60), elongation ( >400)
 
Uses: Stable adhesion, good adhesion, good peeling performance, no glue residue, suitable for steel mirror plates, titanium metal, smooth plastic plates, silk screens, nameplates, etc.
 
3. Medium and low viscosity protective film
 
Features: Thickness (≥0.03m±0.003), width (≤1.3), height (100-1000), base material (PE), peel strength (30-50g/cm), temperature resistance (60), elongation ( >400)
 
Uses: Stable adhesion, good adhesion, good peeling performance, no residual glue phenomenon, suitable for furniture Polaroid board, stainless steel board, ceramic tile, marble, artificial stone, etc.
 
4. Medium adhesive protective film
 
Characteristics: Thickness (≥0.05±0.003), width (≤1.3), height (100-1000), base material (PE), peel strength (60-80g/cm), temperature resistance (60), elongation (> 400)
 
Uses: Stable adhesion, good adhesion, good re-peeling performance, no glue residue, suitable for surface protection of fine-grained matte boards and general hard-to-stick materials.
 
5. High viscosity protective film
 
Characteristics: Thickness (≥0.05±0.003), width (≤1.3), height (100-800), base material (PE), peel strength (80-100g/cm), temperature resistance (60), elongation (> 400)
 
Uses: Stable adhesion, good adhesion, good peeling performance, no residual glue phenomenon, suitable for fine grain frosted board, aluminum-plastic board, difficult-to-stick plastic board, etc.
 
6. Ultra-high viscosity protective film
 
Characteristics: Thickness (≥0.04±0.003), width (≤1.3), height (100-800), base material (PE), peel strength (above 100g/cm), temperature resistance (60), elongation (>400) )
 
Uses: Very high viscosity, water-based acrylic is used as pressure-sensitive adhesive, which is convenient to use, easy to stick and tear, and no glue residue. It is suitable for hard-to-stick materials such as rough grain aluminum plates.

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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