PP Woven Bag Roll is a roll-shaped woven bag made of polypropylene (PP) material, which is widely used for packaging, storing, transporting and protecting various items.
Materials used to make PP Woven Bag Roll
PP Woven Bag Roll is mainly made of polypropylene (PP), a thermoplastic polymer whose molecular structure is composed of carbon and hydrogen elements.
Chemical properties of polypropylene: Polypropylene is a stable polymer, which is mainly polymerized from propylene monomer. This material has good chemical stability, high resistance to acids and alkalis, and is corrosion-resistant, allowing the PP Woven Bag Roll to maintain stable performance under various environmental conditions.
High temperature resistance: Polypropylene has a high melting point, allowing the
PP Woven Roll to maintain structural stability in high temperature environments. This feature is especially important for packaging items that need to be transported under high temperature conditions, ensuring that the packaging material can still perform its function under extreme temperatures.
Lightweight and High Strength: Polypropylene is a lightweight material with high strength and rigidity. This feature makes PP Woven Bag Roll lighter than some other packaging materials, helping to reduce transportation costs and improve packaging efficiency.
Easy to process and form: Polypropylene has good processability and is easy to form into roll woven bags through extrusion, blow molding and other processes. This processing convenience makes the production process more efficient and can meet the needs of mass production.
Recyclability: Polypropylene is a recyclable plastic material that can be recycled and reused through appropriate recycling processes. This has positive significance for reducing environmental burden and promoting sustainable development.
The production process of PP Woven Bag Roll
The production process of
PP Woven Bag Roll involves multiple steps, including raw material preparation, extrusion molding, weaving, printing, cutting and rolling.
Raw material preparation: The first step in making PP Woven Bag Roll is to prepare polypropylene (PP) particles as raw materials. These particles are melted and mixed at high temperatures to form a melt that can be used for subsequent extrusion molding. The selection and pre-processing of raw materials are critical to the quality and performance of the final product.
Extrusion Molding: In this stage, molten polypropylene is extruded through an extrusion machine to form a flat sheet film. This film will become the basis of the PP Woven Bag Roll. During the extrusion process, the thickness and other physical properties of the film can be adjusted by controlling the temperature and pressure of the extruder.
Braiding: The extruded film enters the braiding machine and undergoes a cross-braiding process to form a braided structure. During the weaving process, the fibers in the vertical and horizontal directions are cross-woven together, which enhances the overall strength and durability of the PP Woven Bag Roll. The tightness of the weave structure and the tensile strength of the fibers also affect the performance of the final product.
Printing: On the basis of the completed weaving, various patterns, text or logos can be added through the printing process. Printing not only adds beauty to the PP Woven Bag Roll, but can also be used for product identification, advertising and other purposes. The printing process usually uses flexographic printing or screen printing technology.
Cutting: The woven and printed film is cut by a cutting machine to form a single roll-shaped woven bag. The precision and manner of cutting affects the shape and size of the final bag, ensuring the product meets design requirements.
Rolling: The cut single roll woven bag is rolled into a roll by a rolling machine for easy storage and transportation. The coiling machine is usually able to adjust the diameter and tightness of the roll to accommodate PP Woven Bag Roll with different specifications and requirements.
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