Recycling fluoroplastics processing, also known as fluoroplastics molding processing, is a general term for various processes that convert synthetic resins or fluoroplastics into fluoroplastics products. It is a large production sector in the fluoroplastics industry. With ethylene as the main raw material, propylene, 1-butene, hexene as copolymer, under the action of catalyst, using slurry polymerization or gas phase polymerization process, the obtained polymer through flash evaporation, separation, drying, granulation and other processes, to obtain uniform particles of the finished product. Examples include sheet extrusion, film extrusion, tube or profile extrusion, blow molding, injection molding and rotational molding. Here to introduce you to the processing method of fluorine plastic products:

1. Extrusion: The grades used for extrusion production generally have a melt index of less than 1 and a medium to broad MWD. During processing, a low MI results in a suitable melt strength. The broader MWD grades are more suitable for extrusion because they have higher production speeds, lower die pressures and a reduced tendency to melt fracture.

2. blow molding: more than 1/3 of fluoroplastics sold in the United States are used for blow molding purposes. These range from bottles for bleach, motor oil, detergent, milk and distilled water to large refrigerators, car fuel tanks and canisters. The characteristics of blow molding grades, such as melt strength, ES-CR and toughness, are similar to those used in sheet and thermoforming applications, so similar grades can be used.

3. injection molding: Fluoroplastics have countless applications, ranging from reusable thin-walled beverage cups to 5-GSL cans, consuming 1/5 of domestically produced fluoroplastics. The general melt index of injection molding grade is 5~10, and there are lower fluidity grades with toughness and higher fluidity grades with processability. Uses include thin-walled packaging for daily necessities and food; tough, durable food and paint cans; and high environmental stress cracking resistance applications such as small engine fuel tanks and 90-gal trash cans.

4. rotational molding:Recycling fluoroplasticsThe material used in this processing method is generally crushed into powder material, which is melted and flowed in the thermal cycle. Two types of plastics are used in rotomoulding: general-purpose and cross-linkable. General-purpose grade MD plastics/fluoroplastics usually have a density range from 0.935 to 0.945g/cc, have a narrow MWD, make the product have high impact and minimum warpage, and their melt index range is generally 3-8. Higher MI grades are generally not suitable because they do not have the desired impact and environmental stress crack resistance of rotomoulded articles.

High-performance rotomolding applications take advantage of the unique properties of their chemically crosslinkable grades. These grades in the first stage of the molding cycle, good flow, and then cross-linked to form its excellent resistance to environmental stress cracking, toughness. Abrasion resistance and weather resistance. The only crosslinkable plastic is suitable for large containers, ranging from 500-gal storage tanks for transporting various chemicals to 20,000-gal agricultural storage tanks.

5. film: plastic film processing generally with ordinary blown film processing or extrusion processing method. Most plastics are used for films, general-purpose low-density fluoroplastics or linear low-density fluoroplastics are available. Fluoroplastic film grades are generally used where superior stretchability and excellent barrier properties are required. For example, fluoroplastic films are commonly used in commodity bags, grocery bags, and food packaging.

This article comes from:www.tflpfa.com