The most innovative film blowing technology in Ita

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Italian innovative film blowing technology

multilayer plastic film for agricultural greenhouse to food packaging. Italian film blowing extrusion technology has experienced innovation for many years. There are more than 20 extrusion line manufacturers in Italy, and their main users are all over the world, from Europe to the United States and China. This paper mainly introduces two specific applications, namely pharmaceutical packaging and bubble film

the extrusion processing of film for pharmaceutical packaging is affected by many factors, the most important of which are: production line (which must meet the high-precision process and technical requirements), environment and working conditions. The production line is required to be installed in a sterile room to prevent products from being polluted in any form. In addition, the production line and environment must be sanitized regularly to ensure that they are clean for a long time and have their due functions. Especially for primary pharmaceutical packaging, environmental requirements are the prerequisite

all films used in the pharmaceutical industry should be disinfected. According to the structure and end use, there are three disinfection methods: gamma ray, ethylene dioxide and autoclave (generally referred to as wet or steam disinfection). Autoclave is the most commonly used method, which has the characteristics of high efficiency and strong functionality. Other methods are more expensive and complex, and are generally used for PE films, because PE films cannot be disinfected by steam. In the sterilization process of the autoclave, the temperature will exceed 121 ℃, so the raw materials and the film produced can not only have the function of the intended purpose, but also withstand the heat treatment process

the basic raw materials used in the pharmaceutical field are mainly polypropylene homopolymers and copolymers. The special polypropylene approved in the market for this industry has been treated differently compared with the standard grade. Colines is a professional manufacturer in the pharmaceutical industry that promotes the extrusion production line of solvent dehydration and recycling head with a utilization range of more than one million tons. It is also a film manufacturer through cooperation with partner companies, and its three partner companies, bpack and b-p5 The advance time of the screw cannot be shorter than the solidification time of the gate plastic. Ack due and imballaggi protettivi process more than 20000 tons of polypropylene every year, and can design special film structure according to the storage life and user requirements. If necessary, the barrier coefficient can be determined according to the expected life of the product to be packaged. For products that need to reach a long storage period, barrier raw materials such as PA, PETG or EVOH will be added to the film structure

because these materials have different physical and mechanical properties, they cannot only be selected according to their barrier to gas, but also consider the bonding performance of materials with other materials. According to the formula suitable for end use, two barrier materials may be combined to PP in a structure to obtain high protective performance; If the required storage life is short, only one barrier material can be used. All the above materials can be used as primary packaging materials after being properly extruded under controlled environmental conditions, such as direct contact with products. In this special case, the latest barriercast production line with packaging mechanism, which can produce 7-layer structure, can produce films for filling bags containing sugar and saline solutions for intravenous drip and injection. The three companies of the group also produce secondary packaging, which mainly plays a structural function or compensates for the lack of heat resistance to disinfection conditions (higher than 121 ℃). For example, imballaggi protettivi adopts a process to produce a variable weight co extruded PP sheet, which has several uses in the pharmaceutical and pharmaceutical industries. The bubble guard sheet produced from homopolymer PP is used for the intermediate layer and vaccine tray in the process of pharmaceutical transportation after disinfection. In addition to these applications, it can also be made into boxes for holding hospital solid waste or medical instruments, such as syringes, scissors, or forceps. The combination of structure and materials depends on the required storage life and barrier performance. Its products range from up to five layers of CO extruded CPP film produced by b-pack due company (used for slender knives, but we can permanently take the lead in the experimental machine industry and disinfect the primary packaging of gauze) to high barrier 7-layer structural film produced by b-pack company (used for blood transfusion equipment for military or rescue vehicles). The rapid growth of the pharmaceutical industry, coupled with the demand of countries with technology shortages, has led to the rapid development of the latest barriercast production line market. This production line is mainly used to produce filling bags in the Far East. It is equipped with a 7-layer feeding mechanism, an extruder for packaging and a dittering system. Its main technical parameters are: the available width is 2200 mm, ensuring that the average productivity of barrier film is 550 kg/h, and PP film is higher than 600 kg/h. relying on the advantage of rich raw material resources of Tongling Copper, H

bubble film is light, tough and eco-friendly. It can form a buffer protective layer by using its elasticity and wear resistance. It is now used in a variety of applications from high-quality packaging to heat and sound insulation all over the world. Bubbles can fully protect against impact, prevent damage mainly caused by compression, and the resulting package is light, transparent, harmless, and resistant to acid, alkali, oil and other chemicals, as well as water and moisture. The use of bubble film can reduce the volume of packaging, thereby reducing transportation costs. Bubble film can be printed or laminated with PE or other PE materials, and can be 100% recycled. Due to its flexible production and the use of different materials, this film has now been used to package a variety of different products and consumer goods, including glass, furniture, food, pharmaceutical and electronic products, as well as office equipment

the flexibility of the production line designed by torninova for this application is considered to be its main feature, so that processors can meet the growing market demand through bubble films suitable for a variety of applications. Its product range includes: layer standard products processed by PE for general packaging, 3-layer products for thermal insulation and sound insulation (LDPE for bubbles, PE coated mpet for substrates and the third layer), layer products for packaging large products, such as furniture and sofa (bubbles and substrates made by LDPE, the third layer made by foamed PE, or laminated HDPE as the bottom when it is 4 layers), etc

claudio celata is the publisher of macplas magazine and the managing director of assocomprast

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