Improvement of reciprocating equipment for the hot

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Improvement of reciprocating equipment for dairy packaging

with the improvement of people's living standards, dairy products are welcome for their rich nutritional value and health care functions. As an integral part of dairy products, dairy packaging has a profound impact on the development of dairy industry

promote quality and technological innovation

in the past 25 years, dairy packaging in Mexico, Canada, Britain, Australia and South Africa has changed from paper and glass products to plastic packaging. In the United States, the vast majority of HDPE liquid milk packages with a capacity of 0.5 to 1 gallon are processed using a bottle blowing system

processing advantages improve productivity

compared with ordinary shuttle machine (reciprocating equipment), uniloy Milacron's recip series bottle blowing machine has low production cost, high mold cavity number and short production cycle. For example, the circulation time of HDPE bottles with a volume of less than 1 liter is controlled within 5~6s, which greatly improves the output of the whole equipment. The capacity of the equipment is shown in Table 1

working principle

the working principle of the system is that the screw rotates continuously in the plasticization process. When the system needs blank after a cycle, the screw blank injection technology replaces the traditional blank extrusion technology. At the same time, the equipment also adopts a simple and unique mode locking structure and a full closed-loop computer control system

scope of application

in addition to high-density polyethylene (HDPE), the raw materials for this equipment include low-density polyethylene (LDPE), polypropylene (PP) and polyvinyl chloride (PVC). The products produced by Jinan testing machine are widely used in the packaging of liquid milk, seasoned milk, soymilk, liquid fermented milk, fruit juice, water drinks and tea drinks

n2n production mode

recip reciprocating series equipment can support the simultaneous extrusion of two preforms on one die in a neck to neck manner, thereby doubling the output and improving production efficiency. In this way, users can get double product output without increasing the equipment model. This production method is applied to the packaging bottle without handle, with a volume of 50~1000 ml. before the production (3) the bottle out of the limit position must be sterile products, and the filling operation can be carried out directly. The position of the bottle mouth can be placed in the center of the bottle top or in the upper corner according to the different needs of users

at the same time, this series of bottle blowing machines can provide a complete set of production systems or some equipment according to the different requirements of users. The complete set of systems includes bottle blowing equipment, molds, trimming system, crushing system, cooling and transmission system, etc

market prospect

the market competition is becoming more and more fierce, that is, the percentage of the minimum cross-sectional area of the test bar after breaking to the reduction of the original cross-sectional area. Many companies also have higher and higher requirements for dairy packaging. For example, many dairy products rich in vitamins in the market require an isolation layer inside the packaging bottle wall in order to prevent their nutrients from being damaged by light, sunlight and so on. For example, the middle is an isolation layer, and the inner and outer layers are ordinary layers; In addition, in order to save costs, the middle layer is made of recycled materials. All of these require that the production and packaging equipment can be compatible with multi-layer coextrusion technology. Recip reciprocating series is also meeting the market demand, and it is expected to realize three-layer co extrusion soon

at present, the output of many domestic customers cannot reach the maximum capacity of recip reciprocating series equipment, which causes a waste of resources and limits the development space of this equipment in China. Uniloy Milacron has begun to produce and launch small equipment to meet the production needs of domestic small and medium-sized customers, and gradually develop the production technology of PET materials

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