Domestic large bag of methods and equipment selection – packaging, packaging equ
With China's sustained economic development, large-scale production enterprises increased, how to meet the various sectors of the 25-50kg bags packaging equipment at home a large demand is placed in the packaging machinery industry in front of new topics. It is true that a large packaging items since ancient times, the last of the baskets, sacks, boxes and Plastic Bags of cement Paper bags Belong to the large packing containers, but the modern large-scale production, higher update packaging requirements. Basically, there are six functional index:
1, high speed and efficiency: to satisfy more than 20 tons per hour, packing materials and continuous production.
2, fastness: packaging bag can withstand the tensile impact strength of gravity, the pressure in the stacking and transportation of the impact.
3, sealing: Due to the different packaging materials, have different sealing requirements, in particular, powder or toxic substances, for fear of contaminated items seal performance requirements.
4, moisture, mold performance: easy to damp or moldy materials, airtight packaging materials have special requirements.
5, Environmental protection Requirements: environmental protection to human survival is the consensus of the world, on the level of environmental protection is a measure of the degree of civilization of a country signs; therefore requested the bags must be biodegradable recyclable material, to ease the pollution of the environment .
6, easy to dismantle performance: modern large-scale industrial production necessary requirement for high efficiency, large bags of packing most of the early processing of raw material or product, it needs to meet the bags easy to dismantle, easy dumping requirements.
Reform and opening up, China has introduced a number of complete sets of equipment, which also comes with a high speed and efficiency of automatic packaging machines, depending on the need to meet these functional requirements, and most of the use of biodegradable and environment-friendly packaging materials. These devices mostly from Japan, Germany, the United States and other countries, most of the market share in China. 10 years they have developed a more rational development of a variety of packaging methods and equipment for packaging machinery industry in China has provided valuable experience and draw inspiration.
Recent years, a general increase in domestic industry awareness of the importance of packaging, which is gratifying; but the packaging industry is the lack of big bags and packaging equipment selection guidance, fell behind the market demand. Buying is often purchased by map, select the introduction of similar equipment, imported equipment is expensive, however, by the state-funded enterprise investment or purchase of imported equipment in the past most of some technology projects or small and medium enterprises had to feel powerless and frustrated; other is export business, foreign made packaging requirements or provide sample bags, due to lack of information, companies everywhere looking to meet foreign requirements. Most users are commissioned by the Shang Dynasty to the supply of ancillary equipment, equipment supply company, however, lack of professional Shopping guide guide, also struggle to find. This paper packaging on the big bags and equipment selection, and briefly explain the development trend and exploration.
Types of domestic and foreign large bag
1, heavy-duty automatic heat sealing plastic packing bags. The so-called heavy-duty plastic bags is packing 25-50kg of the material, single-layer 0.2-0.5mm thick bags of PE, PP plastic bags or aluminum, paper-plastic compound bags.
Good sealing of such bags, composite bags preferred, sealing process is relatively simple. As the thick film has a certain fastness, plastic composite bags are sealed shading effects, and new packaging equipment also has the exhaust through the exhaust of the packaging bag in the process of stacking and transportation pressure, impact resistance, also applies to flat bag and seal bag fold M. However, stacking and handling should be avoided and sharp contacts, should also pay attention to recycling bags to avoid white pollution.
2, fold and bag mouth closure automated packaging automated packaging with suture. Type of packing plastic bag, fold the bag first and then suture; or Kraft paper Bags bags wrapped in wrinkled tape saddle, and then suture in two ways. The two ways of packaging a certain fastness, removed bags of convenient, low cost; apply to coarse particles, sealed packaging materials required is not very high. Whether bags or kraft paper bags and fabrics are not easily degradable composite materials, environmental management has not adopted a strict state.
3, bag sealing suture automatic packaging. Such packaging kraft paper bags kraft paper bags or multi-layer production, the first suture bag and then wrapped in thermal sol saddle folded paper tape, seal pinhole, both enhance the sealing of the fastness, but also to seal the requirements, if an prevent leakage of the material also lined with plastic bag; or lined with plastic bags before sealing, then wrapped in folded paper tape stitched saddle-shaped fold, to seal the result. Such packaging materials stacking according to degree, transportation, warehousing and other conditions selected layers kraft paper bags, and have the corresponding types of packaging machine. Such packaging, sealed by the exhaust after the high impact resistance strength, excellent sealing performance.
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