Recently, it is reported that at the "Michigan-Guangdong Exchange Forum", the two provinces signed a friendly provincial agreement for one year, and will continue to strengthen cooperation in the future, especially in the automotive industry, it is expected to set up the country's first automatic driving test base in Guangzhou. .
Definition of Blow molding
Blow molding is a common process for production of hollow containers, ranging from commodity products such as soda or water bottles to highly engineered products such as gas tanks and electrical enclosures. The two most common types of blow molding are extrusion blow molding and injection blow molding with many variants related to handling of the parison and molds.
Blow molding processes:
Three main types of blow molding
l Extrusion Blow Molding
u Take melted plastic
u Extrude the parison with compressed air into the mold
u Features two variations: continuous and intermittent
l Blow Molding
u Produce small medica and single-serve bottles
u Large quantities of hollow glass and plastic objects
u Via pin to blow air into mold to inflate and cool the product
u Restriction on the bottle design, only allowing a champagne base to be made for carbonated bottles.
Injection stretch molding
Injection stretch molding is suitable for cylindrical, rectangular, or oval bottles and has two different main methods, notably the single-stage and two-stage processes
With the single-stage method,
the same machine is used to both preform manufacture and bottles blow the object. This method is highly suitable for low volumes and short runs
In the case of the two-stage process,
the plastic is first molded into a [preform" using the Injection Molding process. The [preforms" are then packaged and fed after cooling into a reheat stretch blow molding machine. While a high capital cost and a large floor footprint are necessary, injection stretch molding can produce very high volumes and feature minimal restrictions on bottle design. The bottles can also be a completed item for a third party to blow
Materials: PE, PVC, PC, PP, PS
Applications:
l To produce bottle-shaped, hollow thin-wall molding products and bulky products, such as seasoning, water bottles, cleaning agents, shampoo and other packaging supplies
l And produce trash cans, gasoline cans, and even the capacity of up to a ton of chemical barrels and fishing products transport boxes
Advantages
l Thin wall forming products, materials and cost saving
l Low cost of mold, rich mold materials
l Can produce large, complex shape hollow products
Disadvantages
l Low dimensional accuracy
l Thickness of the forming product wall is difficult to control and easy to have uneven problem
l Product surface is prone to flow marks, rough but not delicate
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According to Michigan Governor Rick Snyder, Michigan had the highest unemployment rate in the United States, but in June this year, its unemployment rate had fallen to 3.8%, the lowest in 17 years. Continuous tax reforms and policy optimization have also attracted more capital to the state of Michigan. Michigan's venture capital firm currently has $1.7 billion in asset management, a 45% increase over the past five years, and its economy ranks first in the US in terms of business growth.
In May of last year, Michigan signed a friendly provincial agreement with Guangdong. Following the establishment of the Shenzhen Innovation Center in Shenzhen in Michigan, Michigan will continue to strengthen cooperation in Guangdong's trade and investment. Especially in the automotive industry, Guangdong and Michigan are expected to further deepen cooperation. From a supply chain perspective, Michigan's automotive research accounted for 76% of the nation's automotive research and development investment, especially in smart travel and driverless technology. The automobile industry in Guangzhou is also quite strong, and there is a lot of cooperation and communication with the United States. For example, Guangzhou GAC and the US JAC cooperate, Guangzhou Automobile will participate in the Detroit Auto Show every year. Rick Snyder specifically mentioned that there is a self-driving test base called Mcity project in Michigan, covering 35 acres. He revealed that Guangzhou is currently negotiating a project similar to Mcity, the first in the country. The autopilot test base is expected to settle in Yangcheng.