PVC Shrink Film bag is the most commonly used heat shrinkable material in heat seal packaging. Through hot air blowing, the high-transparency heat-shrinkable film can cling to the surface of the item, so as to improve the product grade, prevent dust and moisture, and let the item show a new perfect packaging effect. Heat shrinkable film packaging, the operation method is simple and easy to learn. Heat shrinkable film is used for sales and transportation of various products, its main role is to stabilize, cover and protect products. The heat-shrinkable film must have high puncture resistance, good shrinkage and certain shrinkage stress.
Easy to use and high working efficiency: Due to the green and environmentally friendly stretch film, pre-stretching technology is used, it is quite labour-saving to use, and there is no special packaging machine and special packaging venue, which can be operated by men, women and children. Under the same weight, the length of each roll of this environmentally friendly stretch film is more than double the length of each roll of ordinary stretch film, which can reduce the frequency of film roll replacement during packaging, and in terms of transportation, packaging and distribution Can also save costs. Due to the unique properties of PVC (rainproof, fire-resistant, anti-static, easy to form) and the low input and high output of PVC, it is widely used in the building materials industry and packaging industry. Therefore, Heat Shrinkable Films has high transparency, good gloss and shrinkage. High rate and other characteristics.
PVC Shrink Film
When the PVC Shrink Film factory produces shrink film, the PVC shrink film supplier recommends that you pay attention to the following:
1. The die head must be cleaned, and no scorched plastic can fall into it. If the naked eye can find it, it must be removed immediately.
2. The paper tube must be aligned, not long and short.
3. When packing, be careful not to collide, resulting in quality problems such as cracked edges.
4. Minimize the appearance of wrinkles on the surface and white compact lines in the middle, so as not to affect the appearance.
5. The trim should be cut neatly, and the unevenly stretched film cannot be shipped as a finished product.
With the development of the shrink film market, the homogeneity of shrink film products is becoming more and more obvious, and the difference between the shrink films produced by various shrink film manufacturers is getting smaller and smaller. Therefore, more effort on shrink film packaging can highlight product themes and attract consumers. In the subdivided shrink film market, the design of PVC shrink films that meet the needs of different similar shrink film markets reflects the market promotion skills of a manufacturer. With environmental protection becoming the background of the industry, more and more manufacturers choose low-carbon and environmentally friendly packaging methods and packaging materials by increasing R&D technology. Well-known manufacturers in the industry have adopted the slogan of packaging environmental protection, using new technologies and new materials, introducing a clean production mechanism, and based on green, environmentally friendly (economic mode) production methods and product structures based on low energy consumption, low pollution, and low emissions, thereby reducing carbon emissions and achieve sustainable economic development. With the widespread use of PVC shrink film in daily life, manufacturers should meet the requirements of simplicity, practicality, environmental protection and environmental protection from the beginning of packaging design.
The permeation performance and separation performance of PVC heat shrinkable film are related, which is the main symbol of the processing capacity of the separated medium. Generally speaking, it is hoped that the greater the flux of the separation membrane, the better after the required separation rate is achieved. The permeability depends firstly on the chemical properties of the PVC heat shrinkable film material and the morphological structure of the separation membrane; the operating factors also have a greater influence, which varies with the potential difference of the separation process (such as pressure difference, concentration difference, potential difference, etc.) Increased and increased, the effect of the colour tone of the membrane on the membrane transmission performance is much greater than the separation performance. Many membrane separation processes have a linear relationship with the pressure difference within a certain range.
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