Multi-layer film synchronous production system and method

Abstract

The invention discloses a multi-layer film synchronous production system and method. The multi-layer film synchronous production system at least comprises first conveying equipment used for preparing a first mold layer A through a first melt and second conveying equipment used for preparing a second mold layer B through a second melt, and the first conveying equipment and the second conveying equipment convey the first melt and the second melt to a multi-layer film manufacturing device respectively to prepare a thin film with a multi-layer structure. The flow distribution valves of the first conveying equipment and the second conveying equipment synchronously convey one part of the conveyed melt to the multi-layer film manufacturing device through pipelines, and convey the remaining melt to a slicing device. According to the multi-layer film synchronous production system and the method, all kinds of melts are synchronously conveyed in two directions, and continuous conveying of the melts is achieved; and therefore, the melts in the two directions can be mutually adjusted, when the film manufacturing device breaks down and stops, the redundant melts can be conveyed to the slicing device, the purpose that the film manufacturing melts are uninterruptedly conveyed to avoid waste is achieved, and the quality of each layer of film can be guaranteed through bi-directional adjusting conveying.

Description

Technical field [0001] The present application relates to the field of chemical technology the production of plastic film, particularly to a multilayer film and a method for synchronizing production systems. Background technique [0002] Plastic films in the field of industrial life and is widely used. Various plastic films commonly used include films made from polyethylene (PE), polyvinyl chloride (PVC), polystyrene (PS), polyester film (PET), polypropylene (PP), nylon, thermoplastic polymer compound . Depending on the requirements and application environments, application of multilayer films are also common. [0003] For example, CN103203934A discloses a heat-shrinkable co-polyester film, comprising a surface layer A mainly composed of PETG copolyester, B layer PET / PBT copolyester composed of a core layer, composed of copolyester PCTG layer C ground floor. The three-layer structure by a thin film dicing copolyester PETG, PCTG copolyester film and a film prepared PBT chips wer...

AI Technical Summary

Problems solved by technology

However, the remelting of semi-finished raw materials will lead to partial decomposition of the polymer, resulting in poor product quality. In addition, the production process is divided into two steps: semi-finished products and remelting film production, which not only increases equipment costs, but also reduces production efficiency. The economic benefits are relatively poor

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