The hottest multifunctional equipment and material

Multifunctional equipment and materials lead the development of film

film is the most widely used form in the packaging industry. Because of the variety of materials that can be used, it can be made into general film, shrink film, stretch film, single-layer or multi-layer... Therefore, the development of film in the world continues to grow. In recent years, China's packaging industry has developed rapidly, and the demand for film is also increasing. How suppliers provide equipment and materials suitable for domestic use will be a future research topic

at present, whether it is materials and processes, joining DOP from a small feeding port or the market, it is required to change the operating environment and scope of the stiffness testing machine: many new technologies. Idle Keji, manager of the film production line Department of Mitsubishi Heavy Industries (Shanghai) Co., Ltd., said that all film manufacturers hope to bring more new products to the market. He believes that general purpose films will grow at a steady rate, but those high value-added films will be the focus of future development, and shrink label films (PET and PS) for PET bottles are one of them. Since the PET bottle Market in China is growing by more than 30% every year, and the shape design of PET bottles is becoming more and more complex to attract consumers, shrink film is the best choice to achieve close label

PVC materials are mainly used in China's shrinking label film market. However, with the requirements of environmental protection and the establishment of regulations, the amount of PVC may be gradually reduced, which provides development space for pet and PS shrink labels

in terms of material formulation, SML pointed out that raw material suppliers have provided some opportunities for processors in recent years. This is that the smooth layer and bonding layer use raw materials with the same brand as the core layer, but a small proportion of concentrated additives (generally 10% - 30% of the base layer) are added to the bonding layer. Similarly, a certain proportion of concentrated additives (up to 50% of the base course) are added to the smooth layer. At this time, the same large material station can be used to store and optimize the main raw materials, while the additives are directly stored in the original small packaging bags. Therefore, manufacturers can reduce the diversity of raw materials and get better prices and business conditions by virtue of their large-scale raw material orders

biaxially stretched film has many advantages and is popular in the market. Among them, the consumption of BOPP is the largest. At present, the global demand for BOPP film has reached 3.6 million tons. We believe that the trend will continue to decline in the next 10 years, and the growth rate will obviously maintain 5% - 7%. In the past few years, China has invested heavily in BOPP production lines, resulting in oversupply. He believes that the price of BOPP film will remain low for a period of time after 2005. However, driven by the 2008 Olympic Games, the demand for BOPP film will rise by more than 15%. By 2010, the demand is expected to reach 2million tons. At the same time, special films such as BOPET and BOPA will also increase production in the coming year, so the price will be reduced, which may replace some BOPP applications to a certain extent

traditional films are processed by blowing or extrusion, but the use of cast film (CPP) has increased in recent years. Idle Keji pointed out that 28% of the sealing films in BOPP and BOPET are made of CPP. Due to the cost, most sealing films and general-purpose films are made by blowing process. However, he also saw that as more overseas manufacturers invest in China's food industry, more high-quality films may be needed, and the use of casting technology will greatly expand at that time

in a few years, blown film will still dominate the market, but suppliers must add more value to the film in order to maintain market share. Mitsubishi cooperates with Shikoku kakoh, a Japanese blown film manufacturer, to jointly produce high-functional multi-layer (more than 7 layers) food packaging films and medical films. Mitsubishi provides high barrier multi-layer blown film equipment

Windm? ller H? Lscher (w h) believes that the ratio of global film blowing and casting devices is maintained at 10:1, or even 15:1. If the annual output is calculated, the ratio is between 7:1. With 3-layer coextrusion film as the mainstream configuration, and equipped with thickness control and quantitative feeding system, the investment of layer film line is also gradually increasing

the company believes that China's demand for high-quality films is increasing year by year, which is related to the rapid growth of automatic filling and packaging machinery in China, such as equipment packaging films and forming filling sealing films with milk travel ranges of less than 400mm. In order to ensure the smooth operation of these automatic packaging machines, improve the output and reduce the scrap rate, it is necessary to be equipped with bubble cooling and reverse extraction devices. In addition, barrier films are increasingly used in 5, 7 and 9-layer cast films and blown film production lines, especially in food and pharmaceutical packaging. At present, infusion bags are hot in China; High tech films with high definition, low gel, good tolerance and scratch free (such as LCD screens) are also the future development direction

for the development trend of thin film, in addition to equipment technology and film functions, SML believes that reducing costs is also something that film manufacturers must face up to in the future. An important factor in reducing costs is to reduce product thickness. From 1975 to 2003, the average thickness of the stretched winding film has been reduced from 30 ü m to 20 ü m, while the stretching rate has increased from 50% to 300%. This is due to the development of new materials, such as metallocene materials, which provide higher tensile strength and elongation

the market demand for stretch wrapping film is increasing year by year. At the recent International Conference on stretch wrap film held in Germany, most participants believed that the current annual growth rate of the market demand was 5%-7%, while the demand of the European market in 2004 was 1million tons, of which the manual stretch film accounted for 40%, the medium stretch film accounted for 48%, and the high stretch film accounted for 12%. Its thickness is generally between 12 ü m and 50 ü M