What is the qualified range of impact strength in the physical performance testing of blow molded products in Dalian?

The production process of blow molded products in Dalian. According to the performance requirements of the product, select suitable plastic raw materials such as polyethylene, polypropylene, polycarbonate, etc., and perform pre-treatment such as drying and mixing to ensure the quality and uniformity of the raw materials. Heating and melting plastic raw materials through extruders or injection machines, and then extruding or injecting them into tubular or other shaped blanks. Place the billet into the blow molding mold, and after the mold is closed, compressed air is introduced into the billet through a blowing system to expand and form the billet inside the mold, fitting the inner wall of the mold and forming the desired product shape. The formed product is cooled and shaped inside the mold, and then the mold is opened to release the product from the mold.

Many everyday items are also blow molded products, such as plastic toys, plastic chairs, plastic trash cans, plastic flower pots, etc. They provide convenience for people's lives with their rich shapes, diverse colors, and practical functions. In the industrial field, blow molded products also have important applications, such as industrial pipelines, water storage tanks, floating balls, etc. These blow molded industrial products have good wear resistance, high pressure resistance, and aging resistance, and can be used for a long time in harsh industrial environments.

What is the qualified range of impact strength in the physical performance testing of blow molded products in Dalian?

The qualified range of impact strength for blow molded products varies depending on the material, product type, and application scenario. The following are some examples of the qualified range of impact strength for common blow molded product materials:

Polyamide 6 (PA6)

No gap: 50-70kJ/m ².

There is a gap: 20-40kJ/m ².

Polycarbonate (PC)

The impact strength of blow molded materials such as Lexan PC 153 can reach over 690J/m. The impact strength of different types of PC materials may vary, but overall they are relatively high and can generally withstand large impact forces without breaking.

Polyethylene (PE)

Low density polyethylene (LDPE): The impact strength without notches is usually between tens to hundreds of J/m ², while the impact strength with notches is relatively low, usually around 10-30 J/m ².

High density polyethylene (HDPE): The impact strength without notches is generally around 20-60J/m ², while the impact strength with notches may be around 5-15J/m ².

Polypropylene (PP)

The non notched impact strength of ordinary PP blow molded products is generally between 20-50J/m ², while the notched impact strength may be between 5-10J/m ². After toughening modification, the impact strength of PP material will be significantly improved, and the impact strength without notches can reach over 80J/m ².

The blow molding process is relatively simple, with high production efficiency and the ability to produce on a large scale, reducing the production cost of individual products. Meanwhile, blow molded products are usually lighter in weight, which can save transportation costs. Products of various shapes, sizes, and wall thicknesses can be manufactured according to different mold designs to meet the needs of different application scenarios, with strong design flexibility.

The stretch blow molding process combines the advantages of extrusion blow molding and injection blow molding, and is suitable for producing high-strength hollow products. The process involves first producing a preform through extrusion or injection molding, and then performing biaxial stretching and blow molding under heating. Stretch blown products have excellent mechanical properties and transparency, and are widely used in fields such as beverage bottles and food packaging.