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PE stretch film viscosity debugging method

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  PE stretch film viscosity debugging method The  pe stretch film  uses the film's super winding force and retractability to bundle the product into a unit compactly and firmly, without any looseness and separation, and without sharp edges and stickiness, even in unfavorable environments. Damage to the packaging. So how should the viscosity of PE stretch film be debugged?   The debugging method of PE stretch film viscosity: A high-quality stretch film should have the characteristics of high transparency, high longitudinal elongation, high yield point, high transverse tear strength, and good puncture performance. The application field is limited since the general single-layer casting cannot achieve single-sided adhesion. Single-layer and double-layer casting are not as extensive as three-layer casting in material selection. The formula cost is also high, so the structure of the three-layer co-extrusion is still ideal. In recent years, with the development of materials...
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Quality specification for stretch film

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  Quality specification for stretch film What are the quality specifications of the stretch film? For the products to be packaged, the   stretch fil m  can play the role of moistureproof, dustproof, etc. They can be packaged together to avoid product clutter, so for the sake of safety, we also An in-depth understanding of the general usage standards for the product is required.   Stretch film is mainly used for packaging, which can achieve the effect of dustproof and moistureproof and protect the product. It has a variety of excellent properties because, during production, its material and production technology are all with a guarantee.   1. Excessively reducing the surface folds at both ends and the white pressed lines at both ends will lead to poor quality of the stretch film.   2. If the cutting is not flat, it cannot be shipped as a finished product for a long time, including when shipping, both ends should be flat, and the edge material should be cut f...
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Factors affecting viscosity of PE stretch film

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  With the wide application of   PE stretch film   in the logistics industry, PE stretch film is a popular packaging material nowadays. The stickiness of PE stretch film, if the stickiness of PE stretch film is good, the packaged products will be stronger and stronger, reducing damage caused by external factors. So what factors will affect the viscosity of the PE stretch film?   The factors that affect the viscosity of the PE stretch film are as follows: 1. Whether the self-adhesiveness is good;   2. How to obtain the viscosity of the PE stretch film itself;   3. The temperature of the cooling roll.   There are many materials for the production of PE stretch film, which mainly depend on the application field of the product. Therefore, if you want to control the viscosity of the PE stretch film, you can work hard on the material. Not all C4-LLDPE can be matched with PE stretch film. C6 and C8 materials are often used because of their ease of processing,...
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How to do if the stretch film tension is not uniform?

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  How to do if the stretch film tension is not uniform? The  stretch film  is dust-proof and moisture-proof, effectively protecting the goods while packaging the goods. It is an environmentally friendly packaging material. We will encounter uneven tension of the stretch film during use. Today, I will introduce how to solve the uneven tension of the stretch film.   Stretch film tension and equipment display tension have different meanings. Therefore, different equipment display tensions should be set for different types and thicknesses of stretch films. The surface tension of the stretched film depends on the free energy of the plastic film, and the surface energy of the stretched film depends on the film's molecular structure.   One: Non-polar polymer, surface free energy is negligible. The wet surface tension is low, the after-sales service of the Haier washing machine is generally about 30 dyne/cm. Theoretically, if the surface tension of the object is less th...
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How to identify the quality of PE stretch film?

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  How to identify the quality of PE stretch film? In recent years, the application of  PE stretch film  in product packaging has become more and more extensive, so the number of consumers buying is also increasing. PE stretch film is a new generation of environmentally friendly packaging materials used. There are more and more pe stretch film manufacturers, and the pe stretch film materials used by enterprises in the competition are different. They will inevitably encounter some quality problems. We can identify the quality of PE stretch film through the following aspects.   1. Look at the transparency and measure the tensile strength: First, pull it apart from the length direction of the pe stretched film, and then pull it apart from the horizontal direction. A stretched film with good stretchability has a strong impact force. The stretch rate of pe stretch film with good quality can reach 100%-300%.   The casting production method has developed from single-lay...
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Will the transverse stretch of the stretched film damage the

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  Will the transverse stretch of the stretched film damage the film? Nowadays,  stretch film  has been widely used in our work. Stretch ratio is a very important process parameter. Whether it is longitudinal stretch ratio or transverse stretch ratio, it has a serious impact on BOPP performance. So what effect does the transverse stretch of the stretched film have on the film?   In the process of producing stretched film, in order to adjust the process conditions and change the film function in time, people will make the width of the two guide rails after the transverse stretching of the tenter and the width of the two guide rails before stretching (or the corresponding clamping mouth) The ratio of the width of the film is called the transverse stretch ratio of the film. The transverse stretching of the film is mainly carried out in the stretching zone. The transverse stretch ratio of the biaxially oriented polypropylene (BOPP) film is 7 to 9 times.   The transve...
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PE stretch film can be used as cling film?

  PE stretch film can be used as cling film? Now in our lives, we often see  PE stretch film  and cling film. Many people will wonder, can PE stretch wrap film be used as a cling film? Both are transparent films in appearance, and both can be used at the same time. Used to bandage items. As a result, many consumers have no in-depth knowledge of PE stretch film and cling film, which makes it difficult to distinguish. Today we will take a look together:   Cling film is a kind of stretch film, but because it does not need as high self-adhesive performance as stretch film, the amount of polyisobutylene used will be less. Polyisobutylene is mainly used to increase product flexibility and self-adhesiveness.   Cling film is a kind of plastic packaging products commonly used for fresh food. At present, the main cling films on the market are: one is polyethylene. This material is mainly used for food packaging, such as fruits, vegetables, etc., including those purchased ...
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