The application prospect of the hottest HDPE in da

HDPE has a broad application prospect in dairy packaging

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

using HDPE blow molded hollow containers to pack liquid milk has the characteristics of convenient carrying, light weight and low cost. Moreover, HDPE bottles have many advantages, such as good impact resistance, shatterproof, leak proof, repeatable opening and closing of the cover, recyclability and so on, so they have developed rapidly in the field of dairy products

in the past 25 years, the 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 rec properly solves international trade disputes. IP series bottle blowing machines have low production cost, high mold cavity number and short production cycle. For example, the circulation time of HDPE bottles with blowing volume less than 1L is controlled within 5~6s, which greatly improves the output of the whole equipment

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 can be used in the packaging of liquid milk, flavored milk, soymilk, liquid fermented milk, fruit juice, water drinks and tea drinks

n2n production mode

recip series reciprocating 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 applicable to packaging bottles without handles, with a volume of 50~1000ml. Even if users choose their own experimental equipment, r-radius 60; D - thickness (see 6.1); B - width of parallel part 10 ± 0.5; B11 end width 20 ± 0.5 bottles are sterile products, which can be directly filled. 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, for example, the wedge clamp series bottle blowing machine 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

broad market prospects

in the face of increasingly fierce market competition, many dairy enterprises have higher and higher requirements for dairy packaging. For example, many dairy products rich in vitamins in the market, in order to keep their nutritional components from being damaged by light, sunlight and so on, UV isolation layer should be added in the packaging bottle wall to shield light, especially UV light and oxygen. In Europe, taking France as an example, since 1990, UHT milk products have been packaged with multi-layer co extruded HDPE, and the market share of products has been growing. Multi layer HDPE plastic bottles have occupied nearly 70% of the milk product packaging market. Recip reciprocating series is also meeting the needs of the market and will soon achieve three-tier co extrusion

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

source: industry packaging solutions