Recently, the United States has reached an agreement with 21 other countries to adopt a more stringent standard in the field of automobile door locks. U.S. officials have always been looking forward to having a unified new standard of car safety implemented globally. The implementation of this new standard for door locks may be the first step they hope.
This new standard is planned to be signed recently in Geneva. It was part of an agreement reached at the United Nations in 1998 that aims to establish a globally harmonized standard, rather than individual countries.
China, Japan, and EU member states all plan to sign this agreement.
According to this agreement, all signatory states must take all measures to implement the standards. Once the standard is adopted, the signatory states will require that all vehicles sold be manufactured strictly in accordance with this standard. For many countries, the new standard for door locks is the first update since the 1970s. The new standard requires that the doors of all cars must pass tests to ensure that the doors do not open due to impact during a collision.
U.S. officials said most of the doors will meet this standard, but the sliding doors on minivans and some vans need to make some changes. To meet this new standard, automakers may install a lock on the sliding door so that the cost of each door will increase by approximately $7.
After the agreement is signed, the U.S. National Highway Traffic Safety Administration will allow automakers and other parties to evaluate the agreement and make comments, and hopes to implement it in 2008.
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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