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Two-Stage Flexible Lip for Extrusion Dies

A technology of molds and flexible hinges, which can be used in household appliances, other household appliances, applications, etc., and can solve problems such as limiting the number of mold applications

Active Publication Date: 2022-05-27
NORDSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, using a throttle rod limits the number of applications the mold can perform

Method used

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  • Two-Stage Flexible Lip for Extrusion Dies
  • Two-Stage Flexible Lip for Extrusion Dies
  • Two-Stage Flexible Lip for Extrusion Dies

Examples

Experimental program
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Embodiment Construction

[0026] An extrusion die for transferring molten polymer to a roll stack (not shown), such as an extruded plastic sheet, is described. Unlike existing dies, the extrusion die described herein includes an adjustment system that includes a flexible lip adjustment assembly and a gap lip adjustment assembly to improve the overall thickness of the polymer exiting the mold, the gap A lip adjustment assembly is used to improve the thickness of the various layers of polymer.

[0027] figure 1 A front perspective view of extrusion die 100 is provided. The extrusion die 100 includes a rear end 102, a dispensing end 104 spaced from the rear end 102 in the axial or flow direction A, a first end 106 (eg, right side), and a longitudinal direction L from the right side 106 Spaced second end 108 (eg, left). The dispensing end 104 is configured to discharge fluid to the roll stack. Fluids may include molten polymer mixtures and the like. The extrusion die 100 may be supported by a base, fl...

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Abstract

The present disclosure relates to a mold including an upper body member and an adjustment system. The upper body member has an upper surface, a clearance surface, a clearance edge between the upper surface and the clearance surface, and a clearance flange. The adjustment system includes an adjustment body defining a plurality of channels, and a plurality of adjusters. Each adjuster of the plurality of adjusters is slidably positioned within a corresponding one of the plurality of channels. Each adjuster of the plurality of adjusters is configured to be coupled to a clearance flange of the upper body member. When multiple adjusters are coupled to the gap flange, movement of the multiple adjusters causes a change in position of the gap edge.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS [0002] This application claims priority to US Patent Application No. 15 / 952,624, filed April 13, 2018, the entire contents of which are incorporated herein by reference. technical field [0003] The present disclosure relates to extrusion dies, and more particularly, to an extrusion die that uses a two-stage flexible lip to adjust fluid distribution on an extrusion die. Background technique [0004] Sheet extrusion dies are used to discharge molten polymer into roll stacks and can include single-layer dies or multi-layer dies. A single-layer extrusion die delivers a single layer of molten polymer to the roll stack, while a multi-layer extrusion die delivers at least two layers of molten polymer to the roll stack. Molten polymer is pushed out of the tank by pressure, through the land gap to the lip outlet, and this extrudate is fed to the roll stack. [0005] To vary the distribution of molten polymer entering the roll stack,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C48/31B29C48/305B29C48/21B29C48/08B29C48/92
CPCB29C48/08B29C48/21B29C48/307B29C48/313B29C48/92B29C2948/92152B29C2948/92447B29C2948/92628B29C2948/92904B29L2007/002B29L2009/00B29C48/30B29C48/35
Inventor 萨尔瓦托雷·G·尤利亚诺克里斯·贝格曼纳森·里希迈克尔·特拉斯科特
Owner NORDSON CORP