PVC shrinkable film is a thermoplastic film which is stretched and oriented in the production process and shrinkable by heat in the use process. The heat shrinkability of film was applied as early as 1936. At first, rubber film was mainly used to shrink and package perishable food. Nowadays, heat shrinkable technology has been developed to almost package all kinds of goods with plastic shrinkable film. In addition, shrink packaging is also used to make shrink labels and shrink bottle caps, so that containers that are not easy to print or have complex shapes can be labeled. Recently, new application fields have been developed. Production technology and features the production of packaging film usually adopts extrusion blow molding or extrusion tape casting to produce thick film, and then conduct longitudinal and transverse stretching at a high elastic temperature above the softening temperature and below the melting temperature, or only stretch and orient in one direction and not in the other direction. The former is called biaxial tensile shrinkage film, The latter is called unidirectional contraction membrane. When in use, when it is greater than or close to the tensile temperature, the packaged goods can be wrapped with reliable shrinkage force.
PVC heat shrinkable film is mainly used for food and beverage. Based on the principle that PVC shrinkable film is non-toxic and pollution-free, it is used for external packaging. It has elegant appearance, smooth, transparent, strong toughness and good sealing. It is also used for quality assurance, fresh preservation, dust prevention, moisture-proof, loss prevention and pollution prevention. It has excellent functions and is deeply loved by manufacturers. PVC heat shrinkable film is not only used in food, but also in cosmetics. PVC heat shrinkable film has an ideal packaging effect for high-grade cosmetics. Therefore, PVC heat shrinkable film plays an indispensable role in our daily life.
PVC heat shrinkable film is used as the packaging of many products because it is easy to deform. For example, the packaging of stationery, the outer packaging of beverage bottles and some tableware are made of PVC heat shrinkable film. They generally have strong elastic force and can wrap goods well, which can effectively prevent goods from being damaged, It also avoids the looseness and deformation of goods caused by lax packaging. This advantage makes PVC heat shrinkable film can be deformed according to different needs of customers. Meet their different needs.
Strong oxidation resistance. Now many industries are applied, such as the packaging of sterilized tableware in many catering industries, the anti-oxidation internal packaging of handicrafts, the inner bag of toys and so on, which play a great role in various fields, which is a magical role.
With the development of shrink film market, the homogenization of shrink film products is becoming more and more obvious, and the difference between shrink films produced by various shrink film manufacturers is becoming smaller and smaller. Therefore, increasing efforts in shrink film packaging can highlight the product theme and attract consumers. In the segmented shrink film market, PVC shrink films that meet the market needs of different similar shrink films are designed, which more reflects the ability of a manufacturer in market promotion. Under the background that environmental protection has become the industry, more and more manufacturers choose low-carbon and environmental protection packaging methods and materials by increasing R & D technology. Well known manufacturers in the industry have put forward the slogan of packaging environmental protection, used new technologies and materials, introduced cleaner production mechanism, and (economic model) production mode and product structure based on green and environmental protection, low energy consumption, low pollution and low emission, so as to reduce carbon emission and realize sustainable economic development. With the widespread use of PVC shrink film in daily life, manufacturers should meet the requirements of simplicity, practicality, green and environmental protection from the beginning of packaging design.
One of the biggest characteristics of PVC shrink film packaging. With the help of the super winding force and retraction of the film, the product is compactly and fixedly bound into a unit, so that the scattered small parts become a whole. Even in an adverse environment, the product has no looseness and separation, and there is no sharp edge and viscosity, so as to avoid damage.
