Irradiated crosslinked polyalkene foaming equipment

Abstract

The invention relates to a foaming device of radiation cross-linked polyolefin coiled material, which mainly comprises a coil feeding device formed by a support, an traction-compression rod, a endless conveyer; a preheating foaming furnace whose chamber is formed by horizontal and vertical parts in corner shape; a unfolding device vertical to the chamber; a roller cooling unfolding device, and a traction-coiling device formed a tension rod, a traction rod and a coiling support; it also can comprises additional calendaring, corona and edge-cut devices at the front of traction-coiling device. The invention utilizes the upright heating foaming chamber, to make the foaming base material in natural hanging condition to process foaming and confirm the sheet material in natural condition when in foaming. The invention has the advantages of uniformly heated, fully foaming, simple device, lower cost, high producing efficiency, lower energy consumption and non-pollution.

Description

technical field [0001] The invention belongs to a device for manufacturing cross-linked polyolefin materials with uniform, dense and closed micropores, in particular to a radiation cross-linked polyolefin foaming equipment. Background technique [0002] This kind of material with internal multi-cavities is obtained by uniformly mixing foaming agent into the base material of polyolefin materials and heating the foaming agent to decompose and vaporize and expand. It has strong shock absorption and heat insulation effects, and is widely used. It is widely used in the heat preservation of equipment and the packaging of goods, especially the cross-linked polyolefin foam material, because the internal cavity is numerous closed expansion air bag holes, and the strength and heat insulation performance are better. At present, the methods of producing cross-linked polyolefin foam are mainly chemical cross-linking foaming method and physical cross-linking foaming method. Chemical cross...

AI Technical Summary

Problems solved by technology

[0006] The above three inventions not only disclose the heating molding foaming and free foaming methods of cross-linked polyolefin foamed material sheets and coils, but also describe a horizontal heating foaming method different from the air cushion suspension method and the liquid bath method. The equipment uses the vibrating table as the horizontal foaming platform to realize that the cross-linked polyolefin material can be relatively freely stretched in the three-dimensional direction during foaming, so as to solve the difficulty of using air cushion suspension and the high equipment cost, which makes the equipment cost high And the liquid bath foaming method consumes a lot of solution, it is difficult to recycle and reuse, pollute the sheet, and pollute the environment

However, the vibration platform is not completely separated from the cross-linked polyolefin foam substrate after all.

But it is only intermittently vacated, and the surface in contact with the vibration platform still has friction that hinders the length and width directions. This is one, and the heating on both sides cannot be made exactly the same. This is the second, so it will still cause double-sided foaming. The inconsistency of surface morphology and the deterioration of the appearance quality of the surface in contact with the vibration platform

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