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Technique for fabricating bar rods and bars of cross-linking expanding foam pipes, and die

A production process and technology of foaming materials, which are applied to household appliances, tubular items, other household appliances, etc., can solve the problem of huge material, labor and power consumption, poor quality of multi-cross-linked foamed pipes, complicated processing procedures, etc. problems, to achieve the effect of less power consumption, no environmental pollution, and good product quality

Inactive Publication Date: 2007-10-10
张大伟
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The production process is backward, the mold (see Figure 10 and 11) is extremely simple, the processing procedures are complicated, the construction period is lengthy, the quality of the multi-crosslinked foam tubes (rods) produced is poor, the color is single, and the consumption of materials, manpower and electricity is huge. Larger environmental pollution seriously restricts industrial production

Method used

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  • Technique for fabricating bar rods and bars of cross-linking expanding foam pipes, and die
  • Technique for fabricating bar rods and bars of cross-linking expanding foam pipes, and die
  • Technique for fabricating bar rods and bars of cross-linking expanding foam pipes, and die

Examples

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Embodiment Construction

[0025] As shown in Figure 1, a cross-linked foam pipe, rod production process, specifically as follows: the plastic foam material is mixed by an open mixer or an internal mixer, and then cooled on the upper and lower sheets of the open mixer, and crushed Crushed by machine, extruded and granulated by extruder, injected plastic foamed pellets into the mold cavity with the same shape as the tube or rod by injection machine for cross-linking and foaming, or manually weighed plastic foamed pellets by the operator The method of combining volume delivery and injection machine injection is injected into the cavity of the mold with the same shape as the pipe or rod for cross-linking and foaming to form a cross-linked foaming rod. Before the mold cavity with the same shape as the tube or bar, the inner core is set in the mold cavity, and the forming cavity of the pipe is formed between the inner core and the mold cavity, and the plastic foam particles enter the molding between the mold ...

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Abstract

A technology for preparing the cross-linked foam tube (or rod) includes such steps as pugging the foam plastics in roller mill or Banbury mixer, cooling, pulverizing, extruding out while granulating, injecting the particles into a mould set, and cross-linking while foaming. Said mould set is composed of a mould shell with moulding cavity, and a mould core.

Description

technical field [0001] The invention relates to a process for producing cross-linked foamed pipes and rods, a production process for the rods and a mold based on the same cross-linked foaming mechanism. Background technique [0002] The production of traditional cross-linked foam pipes and rods is generally made of EVA, LDPE, HDPE, POE, EPDM and modified NR, SBR, NBR, BR and other main plastic materials and filler + foaming agent + cross-linking agent. Linking agent + auxiliary agent (foaming aid, cross-linking aid, anti-aging agent, flow aid) after mixing (banburying) → thin pass → pull sheet → manual weighing → put into a simple flat mold cavity for cross-linking → Foaming (see Figure 2) → cross-linked foamed sheet and then processed into a strip-shaped sheet with a band knife (saw knife), then drilled out a cross-linked foamed rod with a pipe cutter, and then produced with a double-pipe cutter → manual drilling Produce cross-linked foam pipes. The production process is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C44/02B29C44/38B29C44/58B29C43/24B29C43/58B29B9/06B29K31/00B29K23/00B29K25/00B29K9/06B29K7/00B29L23/00B29L31/00
Inventor 张大伟
Owner 张大伟
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