Co extrusion blow molding machine is mainly composed of five parts: feeding, plastic parison extrusion, mold closing and blowing, cooling, mold opening and trimming.

1. Blow molding machine loading

The blow molding machine is fed by its own automatic feeding system, which sucks plastic particles into the feeder. They are melted at high temperatures and fed into the blow molding machine head.

2. Plastic parison extrusion

The blow molding machine head is a key part to control the number of layers of blow molding products and the size of blow molding. Sometimes there are differences in details inside the machine head for products made of different materials.

After the molten plastic parison is extruded, it is extruded through the die like toothpaste; and the plastic parison flows down slowly like a cylindrical dough.

3. Mold blowing

When the parison reaches the bottom, the upper and lower splints will slide and close, and air will be blown into the parison to quickly blow up the parison; allowing the parison to fill the entire mold.

4. Cooling

After air blowing, the parison is still at high temperature and unshaped. If it is not cooled, it will collapse and it is quickly cooled with cooling water to quickly cool and shape the plastic product.

5. Mold trimming

Extrusion blow molding machine when the plastic product is cooled and shaped, the mold can be opened; and the top mechanical splint will clamp the plastic product with scraps, and then cut the scraps to become the final product.

About Suzhou Bestar Blow Molding Machinery Co., Ltd:

Beier Group and Bestar company are same owner And Bestar has been established for more than 19years. Bestar provides customers high efficiency, innovative, energy saving blow molding machinery solutions. Bestar blow molding machines sold to more than 60 countries.

Series blow molding machine is used for blowing 100ml-1250L HDPE PE PP products like milk bottles, daily chemical packaging bottles, jerry cans, pesticide bottles / medicine bottles and stacking barrels.

Please write your machine inquire Email, Phone Number and Company Name here, we will respond within 12h. Or you can directly contact us: Email: sales@bestarmachinery.com or at Whatsapp/Wechat +86 18862609888.