Machine head of seven-layer coextrusion high barrier film blow molding machine

A high-barrier film and blow molding machine technology, which is applied in the field of extrusion blow molding machine head, can solve the problems of low tensile strength and elongation at break, low compression density of the head, and poor discharge uniformity. Achieve the effect of high tensile strength and elongation at break, high compression density of the machine head, and good uniformity of discharge

Inactive Publication Date: 2010-07-21
大连吉润高新技术机械有限公司
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the past, the head of the three-layer and five-layer co-extrusion blow molding unit still stays in the inclined flow channel head. The disadvantages are: there is a dead angle in the discharge of the head, and there is no melt pressure sensor, which causes blockage and is difficult to clean; Poor uniformity and uneve

Method used

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  • Machine head of seven-layer coextrusion high barrier film blow molding machine
  • Machine head of seven-layer coextrusion high barrier film blow molding machine
  • Machine head of seven-layer coextrusion high barrier film blow molding machine

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Embodiment Construction

[0019] Utilize the working process of the present invention: the thermoplastic material is pulverized by the extruder through the hopper, heated to a molten state, enters the machine head of the present invention, passes through a feed port of each layer (totally seven layers), and passes through the double-helix plane superposition machine. Inside the head, runner plate 2 of 2 n It is extruded in the form of a seven-layer composite fluid, and the thickness of the product is adjusted through the inner die 10 and the outer die 13 placed on the upper end of the machine head, and is cooled by the air ring to form a film.

[0020] The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone familiar with the technical field within the technical scope disclosed in the present invention, according to the technical solution of the present invention Any equivalent replacement or change of the inv...

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PUM

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Abstract

The invention relates to a machine head of a seven-layer coextrusion high barrier film blow molding machine, which comprises a core model, a flow passage tray, a connecting tray, a top tray, an inner neck mold, an outer neck mold, bolts and copper bars. A plane superposition machine head adopts a disc-shaped film design to ensure that superposed layers reach seven layers and U-shaped flow passages are fully distributed on each one of the superposed layers; a structure in which one part is divided into two parts, the two parts are divided into four parts, the four parts are divided into eight parts and the eight parts are combined into the four parts ensures that a material is heated more sufficiently; a computer centralized control detection system automatically adjusts the temperature to ensure that the material is not fluidized because the temperature of the machine head is over-high, so the flow property of the material is effectively improved; and the material is fed from a lateral surface to ensure that the material is uniformly distributed in the machine head and is heated uniformly, so the densities of extruded film products are consistent, and the flow passages in the machine head have fewer inflection points and have no dead corners.

Description

technical field [0001] The invention relates to an extrusion blow molding machine head for making a multilayer film, which is a double-helix plane 7-layer co-extrusion superposition type blown film machine head. Background technique [0002] With the development and progress of society, people's quality of life has been continuously improved, and the requirements for the performance of various plastic packaging films are also getting higher and higher. In the past, the head of the three-layer and five-layer co-extrusion blow molding unit still stays in the inclined flow channel head. The disadvantages are: there is a dead angle in the discharge of the head, and there is no melt pressure sensor, which causes blockage and is difficult to clean; Poor uniformity and uneven thickness; the compression density of the machine head is low, and the tensile strength and elongation at break of the product produced are low; the plasticity of the product is poor, and there are clouds, str...

Claims

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Application Information

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IPC IPC(8): B29C55/28B29C47/20B29C48/32
Inventor 高永明
Owner 大连吉润高新技术机械有限公司
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