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China, Chinese PUR Shape Mould Tooling for Polyurethane Foam Making1 Industrial Products Supplier Manufacturer Details, price list catalog:
China Industrial Products Supplier Manufacturer List Catalog
Foam MachineryPUR Mould ToolingPUR Shape Tooling
Shijiazhuang Myaid Trading Co., Ltd.
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Product Description Product DescriptionPUR (Polyurethane) foam can be foamed in a box-type mold. Foaming in a box-type mold is a common method used in the production of various polyurethane foam products, including items like seat cushions, mattresses, insulation panels, and more.Here's how the process generally works:1. Preparation of the Mold: The box-type mold is typically made of metal or another suitable material and is designed to the desired shape and dimensions of the final foam product.2. Mold Release: Before foaming, the mold surface is often treated with a release agent to facilitate the removal of the cured foam from the mold once the foaming process is complete.3. Foaming Process: The two main components of polyurethane foam, the polyol and the isocyanate, are mixed together in a precise ratio according to the foam recipe. This mixture is then poured or injected into the box-type mold.4. Expansion and Curing: Once the mixed components are in the mold, they react and begin to expand, filling the mold cavity with foam. The foam then cures and solidifies to the desired density and shape.5. Demolding: After the foam has fully cured, the box-type mold is opened, and the cured foam product is removed. The release agent applied earlier helps in easy demolding without damaging the foam.Foaming polyurethane foam in a box-type mold offers several advantages, such as:- Customization: The mold can be customized to produce foam products of various shapes and sizes.- Consistency: Using a mold ensures consistency in the dimensions and quality of the foam products.- Efficiency: The box-type mold allows for efficient and controlled production of foam products in batch quantities.This method is widely used in industries that produce polyurethane foam products for a range of applications due to its versatility and effectiveness in creating high-quality foam products. Machine ApplicationPU block size example1200*1200*1000Power Supply380V/220V FAQQ:What chemicals needed and how to foam PU block?A:The combination of polyether and Polymeric Methylene Diphenyl Diisocyanate (PMDI) typically refers to the materials used in the production of polyurethane (PU) foam. Here is a breakdown of the chemicals involved:Polyether:Polyether polyols are one of the main components used in the production of polyurethane foam. These compounds are typically created through the reaction of an initiator (such as glycol) with epoxide monomers. Polyether polyols provide flexibility and resilience to the final polyurethane foam product.Polymeric Methylene Diphenyl Diisocyanate (PMDI):PMDI is a type of diisocyanate used in the production of polyurethane foam. It is a mixture of compounds containing methylene diphenyl diisocyanate (MDI), which is a key component in the formation of urethane linkages in polyurethane materials. PMDI is commonly used in the production of rigid polyurethane foams due to its excellent mechanical properties and resistance to fire.When polyether polyols and PMDI are combined in the production of polyurethane foam, the PMDI reacts with the polyols to form the polyurethane polymer network. This reaction is known as the isocyanate reaction and is essential for the formation of the foam structure.The specific chemical structures and compositions of polyether polyols and PMDI can vary based on the manufacturing process, intended application, and desired properties of the polyurethane foam being produced. It is crucial to follow proper handling and safety protocols when working with these chemicals due to their reactivity and potential health hazards.Company Profile
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