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Functional PE film escorts resistant media flexible packaging

Jiangmen Pengjiang District Hualong Packaging Materials Co., Ltd. Wei Hongmei

 

Resistant to media soft packaging is mainly used to package soft packaging, such as pesticides, chemical reagents, etc., which are different from ordinary solids and liquids, such as toxic, corrosive, easily polluting, strong acid, strong alkali and spicy.  In this type of packaging, the functional PE film acts as a primary medium.

Jiangmen Pengjiang Hualong Packaging Materials Co., Ltd. has been focusing on the development of various functional PE films for 25 years. Some functional PE films have been widely used in dielectric flexible packaging.  In general, the ability of flexible packaging to adapt to content is related to the packaging structure and the properties of the layers.  Among them, the degree of resistance of the PE film to the medium is mainly determined by the heat seal strength and the peel strength.  Let's take the pesticide emulsion film as an example to analyze the characteristics and functions of Hualong functional PE film in terms of medium resistance.

First, pesticide emulsion packaging

When it comes to media-resistant packaging, the first thing that comes to mind is the soft packaging of pesticides.  At present, China is the world's second largest producer of pesticides, 70% of which is liquid dosage form. Faced with such a huge number, the packaging form of pesticides has become a hot spot in the packaging industry.

At present, China's pesticide packaging mainly includes three types of packaging such as glass bottles, plastic bottles and plastic bags.  However, glass bottles or plastic bottles obviously have more defects than soft bags.  Such as: 1. Glass bottles are easily damaged during transportation, and plastic bottles are susceptible to leakage due to extrusion deformation.  2. Glass bottles are not easy to recycle, and discarded debris is easy to cause harm to people.  3. The bottle label is easy to fall off or wear, which is inconvenient for the user.  4. High packaging costs and large equipment investment.

In contrast, the outstanding advantages of the flexible packaging of pesticides are as follows: 1. The bag form of different specifications is made according to the user's requirements, which is convenient for one-time use.  2. The printing and printing adopts the printing method, and the surface is marked with the use method, and the text or the pattern is not damaged.  3. Low packaging cost and small investment in packaging machinery.  4. The plastic packaging capacity is large and easy to transport.

(1) Packaging structure and raw material selection:

The choice of composite material is a key element in meeting packaging requirements.

1. Composite structure: PET/AL/PE

a. The polyester has high mechanical strength, strong strength and impact resistance, and is particularly excellent in strength after biaxial stretching.  Secondly, the polyester has good acid and alkali corrosion resistance, can withstand various organic solvents, is not easy to dissolve, and has good air tightness.

b. Pesticides are usually composed of a highly corrosive volatile solvent such as xylene and are volatile.  Therefore, the barrier layer is made of aluminum foil, which can function as a light-shielding, gas-blocking, moisture-blocking, etc., and is an important substrate and an excellent barrier layer in flexible packaging.

c. Due to the characteristics of the contents, the heat sealing material of the product must have certain chemical resistance, and the modified pesticide emulsifiable PE film has good impact strength and rigidity, wear resistance, stress resistance and chemical resistance. Therefore, it is most suitable.

(2) Comparison of heat sealing strength and peel strength of ordinary PE film and pesticide EC film:

Heat seal strength comparison

 

The peel strength varies according to the composite structure, conditions, and process of each manufacturer. Therefore, the aging test should be performed according to the actual situation, which is subject to the test results.  From the effect of many years of use, the pesticide emulsion PE film provided by Hualong Packaging meets the packaging of various solvent-based pesticides.

 

(3) Comparison of aging test between ordinary PE film and pesticide emulsifiable PE film:

 

 

The peel strength varies according to the composite structure, conditions, and process of each manufacturer. Therefore, the aging test should be performed according to the actual situation, which is subject to the test results.  From the effect of many years of use, the pesticide emulsion PE film provided by Hualong Packaging meets the packaging of various solvent-based pesticides.

(4) Customer feedback

A well-known pesticide emulsifiable soft packaging manufacturer in the Pearl River Delta often encountered an important customer of Jiangmen Hualong's pesticide emulsifiable PE film. The heat seal was unstable when the pesticide was filled. It was necessary to adjust the equipment from time to time and affect the production speed.  After using the pesticide emulsifiable PE film provided by Jiangmen Hualong, a stable heat seal was achieved, which greatly increased the production speed. Therefore, the pesticide factory designated the customer to use Jiangmen Hualong's pesticide emulsifiable PE film.  At the same time, from the use effect of many emulsifiable packaging customers for many years, the pesticide emulsifiable PE film of Jiangmen Hualong Packaging has good solvent-based pesticides, especially for solvent-based pesticides with strong solubility and strong corrosive benzene-containing components. Anti-leakage effect.

In short, Jiangmen Hualong's medium-resistance PE film has stable performance. Through reasonable packaging structure design, it can protect the medium-resistant flexible packaging and bring more value to customers.

Founded in 1990, Hualo PE Film is a professional manufacturer of Polyethylene film, Transparent PE Film, laminating PE Film.Contact us john@hualongco.com    


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