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Distributor structure for preparing multiple layers of CPP thin films

A distributor and film technology, applied in the field of distributor structure of multilayer CPP film, can solve the problems of uneven distribution technology, difficult to distribute evenly, and difficult to co-extrude multi-layer CPP film layers, etc., to achieve fluid stability and formulation. Evenly distributed effect

Active Publication Date: 2018-08-14
SUZHOU RDX NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the uneven shunting technology of the current distributor, especially when the single-layer CPP film layer is below 15um, it will be difficult to distribute evenly, so it is difficult to realize the co-extrusion of multi-layer CPP film layers

Method used

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  • Distributor structure for preparing multiple layers of CPP thin films

Examples

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Comparison scheme
Effect test

specific Embodiment example 1

[0019] Such as figure 1 As shown, it is a schematic diagram of a distributor structure for preparing multilayer CPP film, which includes: raw material inlet (10), splitter cone (11, 12, 14, 15), splitter pipe (111, 112, 114, 115), central tube (113), flow limiting cone (13), characterized in that: two splitter cones (11, 12) are sequentially and concentrically set on the central tube (113), wherein the first splitter cone (11) One end of the first splitter cone (11) is connected to the raw material inlet (10), and the other section of the first splitter cone (11) is concentrically nested at one end of the second splitter cone (12). Each splitter cone (11, 12, 14, 15) , the fluid will be divided into two strands, and will be transmitted along the axial direction through the splitter tubes (111, 112, 114, 115). The fluid of the flow cone (13) and the front shunt pipes (111, 114) will merge into one stream of fluid I, and the fluid passing through the restrictor cone (13) will m...

specific Embodiment example 2

[0021] A distributor for preparing multilayer CPP films, comprising: raw material inlets (10), splitter cones (11, 12, 14, 15), splitter pipes (111, 112, 114, 115), central tubes (113 ), restrictor cone (13), characterized in that: two diverter cones (11, 12) are concentrically set on the central tube (113) successively, wherein one end of the first diverter cone (11) is connected to the raw material inlet (10 ), the other section of the first splitter cone (11) is concentrically nested at one end of the second splitter cone (12), and each time a splitter cone (11, 12, 14, 15) passes through, the fluid will be divided into 2 Strand, and through the distribution tube (111, 112, 114, 115) along the axial direction transmission, at the end of the center tube (113) set restrictor cone (13), and the flow through the restrictor cone (13) With the front shunt pipes (111, 114) will merge into a stream of fluid I, while the fluid passing through the restrictor cone (13) and the front s...

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Abstract

The invention provides a distributor structure for preparing multiple layers of CPP thin films. According to the distributor structure for preparing the multiple layers of CPP thin films, the problemsthat the flow dividing technology of an existing distributor is uneven, especially when the thickness of a single CPP film layer is lower than 15 [mu]m or below, even distributing is difficult to achieve, and consequently, co-extrusion of the multiple CPP film layers is difficult to achieve are solved. The distributor structure adopts the mode that multiple sprue spreaders are adopted for flow dividing, then converging is conducted again, thus olypropylene melt liquid can be evenly distributed through the distributor structure, and the thickness of each layer of CPP thin film can reach 5 [mu]m-15 [mu]m; and in this way, the original single layer of CPP thin film can be replaced with the multiple layers of CPP thin films, and meanwhile, the material cost is not increased.

Description

technical field [0001] The invention relates to processing equipment for aluminum-plastic composite films, in particular to a distributor structure for producing multi-layer CPP films in aluminum-plastic composite films. Background technique [0002] Usually, the aluminum-plastic composite film is composed of an outer nylon layer, a middle aluminum foil layer and an inner heat-sealing layer to form a composite material, and the layers are bonded by an adhesive. However, lithium-ion batteries may leak corrosive liquid or hydrofluoric acid during use, and the inner heat-seal layer of ordinary aluminum-plastic composite films is easily penetrated by corrosive liquid or hydrofluoric acid, resulting in a short circuit. The reason why the inner heat-sealing layer of the aluminum-plastic composite film is easily penetrated by corrosive liquid or hydrofluoric acid is that the inner heat-sealing layer of the aluminum-plastic composite film is mainly a CPP film, and the CPP film is a ...

Claims

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Application Information

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IPC IPC(8): B29C47/70B29L7/00B29L9/00B29K23/00
CPCB29K2023/12B29L2007/00B29L2009/00B29C48/705
Inventor 张建林
Owner SUZHOU RDX NEW MATERIAL TECH CO LTD
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