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EPP pre-foaming machine

A pre-foaming and foaming tank technology, applied in the field of plastic processing, can solve the problem that the distribution rate affects the foaming efficiency of beads, and achieve the effect of increasing the distribution rate and improving the foaming efficiency

Inactive Publication Date: 2016-11-16
重庆市盛塑包装制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem is that the uniformity and distribution rate of steam in the foaming tank affect the bead foaming efficiency, so it is necessary to improve the distribution rate and uniformity of steam in the foaming tank

Method used

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Embodiment Construction

[0020] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0021] Please refer to the figure, the EPP pre-foaming machine of the present embodiment includes a foaming tank 1, a steam generator 2 and an air intake pipe 3, and the steam generator 2 and the foaming tank 1 are connected by an air intake pipe 3 arranged horizontally. The top of the foaming tank 1 has a material inlet 11 and the bottom has a material outlet 12 . The beads enter the foaming tank through the feed door 11 of the foaming tank 1 to wait for foaming, the steam generator 2 generates high-temperature steam, and the high-temperature steam enters the foaming tank 1 through the intake pipe 3, and the beads are under the action of the high-temperature steam After softening and expansion, it is foamed. After the foaming is completed, the EP...

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Abstract

The invention belongs to the field of plastic machining, and provides an EPP pre-foaming machine. The EPP pre-foaming machine of the present invention comprises a foaming tank, a steam generator and a gas inlet pipe; the steam generator and the foaming tank are connected by the gas inlet pipe; the pre-foaming machine also comprises a gas guide pipe and a rotary mechanism; the gas guide pipe comprises a horizontal pipe and a vertical pipe; the horizontal pipe is located in the foaming tank; one end of the horizontal pipe is communicated with the gas inlet pipe while the other end is closed; one end of the vertical pipe is communicated with the horizontal pipe while the other end upwards extends out of the foaming tank; the vertical pipe and the horizontal pipe are in rotary match; the upper part of the vertical pipe is provided with a closing plug for preventing steam from leaking outside; the vertical pipe is provided with a plurality of gas outlets corresponding to the interior of the foaming tank; and the rotary mechanism is located above the foaming tank and drives the vertical pipe to rotate. According to the EPP pre-foaming machine, the steam can be quickly and uniformly distributed in the foaming tank by the rotation of the vertical pipe, thereby improving the foaming efficiency of beads.

Description

technical field [0001] The invention relates to the field of plastic processing, in particular to an EPP pre-foaming machine. Background technique [0002] EPP is the abbreviation of expanded polypropylene (Expanded polypropylene), which is the abbreviation of a new type of foam. EPP has light specific gravity, good elasticity, shock resistance and compression resistance, high deformation recovery rate, good absorption performance, oil resistance, acid resistance, alkali resistance, resistance to various chemical solvents, non-absorbent, insulation, heat resistance (-40 ~ 130 ° C), non-toxic Odorless, 100% recyclable with virtually no loss of performance, it is a true environmentally friendly foam. The EPP molding process includes pre-foaming, molding and drying. Pre-expansion is to heat the beads in the pre-expansion machine, and the volume of the beads will expand after heating and softening to reach the required expansion ratio. The foamed EPP beads are molded into EPP...

Claims

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Application Information

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IPC IPC(8): B29C44/34B29K23/00
CPCB29C44/3442B29C44/3461B29K2023/12
Inventor 孙林
Owner 重庆市盛塑包装制品有限公司
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