Wide advantages and applications of PVC shrink film

          The production process of PVC shrink film is not complicated. The common production line is generally composed of a rolling machine, a printing machine, a back coating machine and a cutting machine. The film with a thickness of only 0.3mm to 0.7mm is produced mainly through the direct stirring of the rolling machine, the rotation of the roller and the high-temperature rolling. At the same time, the color is printed on the front of the film by the printing machine, and a back coating is attached to the back of the film by the back coating machine. Don't underestimate this back coating, it is an important guarantee of high-quality performance of PVC film. The back coating is composed of special materials, which is a kind of high-energy affinity agent. It is because of this back coating that PVC film can be tightly fused with medium-density board or other boards, and can not be glued for ten or even fifteen years. However, the problem of ordinary adhesive film is that it can't solve the problem of film shedding. Because the whole production process is carried out at high temperature (the temperature in the rolling machine reaches 220 degrees), this makes PVC film have high light resistance and fire resistance.

Five advantages of PVC shrink film widely used:

• 1. Strong cold resistance: Even at minus 50 degrees Celsius, its physical properties will not change, so it is suitable for packaging and transportation of frozen food.

• 2. The materials used in heat shrinkable film are green packaging materials.

• 3. Low packaging cost, good quality and low price.

• 4. Good flexibility: Avoid the impact of external forces on the packaged goods, and play a role in protecting the packaged goods.

• 5. High shrinkage rate: The shrinkage rate of PVC shrink film is up to 75%, which is suitable for the collective packaging of multiple items and convenient for transportation. And can meet the requirements of different commodities on contractility.

           PVC is suitable for the packaging needs of products in various industries. It can be packaged in single pieces or small collections, or in large pallets. It can be used for heat-shrinkable packaging of stationery, toys, textiles, paper products, beverages, medicines, tongue-and-groove flooring, hardware and electrical appliances, etc.

           Now the use of PVC shrink film can be said to be very popular. It is widely used in the packaging of hotel products and food, as well as some common sports equipment, electronic appliances, daily necessities, handicrafts, health products and other medicines. It is mainly for the packaging of the whole product, which has a good guarantee for its aesthetics.

           PVC film is a widely used film material at present. Its price is low, its temperature contraction range is wide, and its requirements for heat sources are not high. The main processing heat sources are hot air, infrared rays or the combination of the two. However, PVC is difficult to recycle, and toxic gas is produced when burning, which is not conducive to environmental protection. The shrinkage rate is high, and the articles can be tightly wrapped after thermal contraction. If the PE through bag (the opening at both ends of the bag) is made, after thermal contraction, the articles can be lifted at both ends of the opening, which can bear the weight of 15KG and is convenient to carry.

           PVC shrink film is used for the sale and transportation of various products, and its main function is to stabilize, cover and protect products. Shrinkage film needs to have high puncture resistance, good shrinkage and corresponding shrinkage stress. In the process of shrinkage, the film can not produce holes. Because shrink film is often used outdoors, it is necessary to add UV anti-ultraviolet agent.

           Shrinkage film has high puncture resistance, good shrinkage and some shrinkage stress. It is mainly used in the sales and transportation process of various products to stabilize, cover and protect products. Shrinkage packaging not only looks beautiful, but also plays the role of moisture-proof, dust-proof, looseness-proof, theft-proof and aggregation.

Wide application of PVC shrink film;

           The production of shrink film usually adopts extrusion blow molding or extrusion casting method to produce thick film, and then it is stretched longitudinally and transversely at a high elastic state temperature above the softening temperature and below the melting temperature, or stretched in one direction only, while the other direction is not stretched. The former is called biaxial stretch shrink film, while the latter is called unidirectional shrink film. When in use, when the temperature is higher than or close to the stretching temperature, the packaged goods can be bound with reliable contraction force.

           Advantages of heat shrinkable film packaging: cement bags can be transported in stacks without wooden or metal pallets, saving pallets and turnover costs. It can store cement piles arbitrarily, and it is not afraid of wind, frost, rain and dew immersion, so as to ensure that the cement quality will not change in some period. It can be placed in the open air, stacked on the stack, without warehouse or tarpaulin, saving the area and capital. It is convenient for lifting or forklift loading and unloading, and it is suitable for both land and water, especially for waterway transportation, and it is convenient for lifting in ship warehouse. The damage is greatly reduced. In China, the amount of cement lost in transportation is about 5-10% due to the damage of paper bags, and there is almost no loss in heat-shrinkable packaging.

            At present, PVC heat shrinkable film has been widely used in various industries and plays a very important role in people's lives. Don't look at its small thin layer, but it has great uses. Heat shrinkable film is a packaging film made of PVC resin as the main raw material and processed by special technology, which is characterized by heat shrinkage.

            PVC heat-shrinkable film is used as the packaging of many products because of its easy deformation. For example, the packaging of stationery, the packaging of beverage bottles and some tableware in our daily life are all made of PVC heat-shrinkable film. Generally, they have strong elastic force, which can wrap goods well, effectively prevent goods from being damaged, and avoid the looseness and deformation of goods caused by lax packaging. This advantage makes PVC heat-shrinkable film deform differently according to different needs of customers. Meet their different needs.

PVC shrink film is an excellent film packaging material, which has the following advantages:

• (1) Excellent transparency, which enables customers to directly see the packaged products, which is convenient for customers to select products;

• (2) It is close to the product shape, and can be applied to the packaging of products of various shapes, with a wide range of packaging contents;

• (3) Excellent anti-theft and dustproof;

• (4) various products can be packaged in a heat-shortened packaging bag, so that a single small product can be avoided from being thrown away, and it is convenient for customers to carry it;

• (5) Different resins and formulas can be used to produce environmentally-friendly shortening films with different mechanical strength and functions, which can be used not only for inner packaging with low strength and small product weight, but also for transportation packaging (outer packaging) for mechanical products and building materials for containers with high demand strength.