Container body partial heat-insulating layer foaming method

Abstract

The invention discloses a method for foaming a partial insulating layer of a pallet, including the following steps: assigning foaming holes and air exit hole sets on the outer surface of the box position needed to be foaming, wherein each foaming hole and air exit hole set positions one foaming hole and more than one air exit hole; arranging each foaming hole and air exit hole set in the same horizon, which lies in the commanding height of the foaming section; injecting quantitative liquid foaming material from foaming holes; while said air exit holes begin to bubble, holding the inner and outer surface of the foaming section box with jig immediately, removing the jig after the foam expansion curing to meet the needs of art requirement. Because of the process of assigning foaming holes and air exit hole sets and injecting liquid foaming material afterwards, performed without jig limiting the foaming section of the box, relative operations, especially injection, is quite simple. Moreover the adhesive force between the foaming and box inner surface is enhanced further, which can guarantee intensity, and is good for improving foaming effect.

Description

technical field [0001] The invention relates to a foaming method for forming a thermal insulation layer adopted in the process of repairing a partially damaged thermal insulation layer of a container body. Background technique [0002] In the prior art, in the process of repairing the partially damaged part of the container body and re-foaming the part to form an insulation layer, the inner and outer wall parts of the damaged part are first clamped and limited in opposite directions, and then the foaming holes opened Perform injection foaming. The above-mentioned pre-clamping technical method often blocks or restricts the foaming holes, which brings inconvenience to the injection operation, and this pre-clamping technical method can easily cause pressure imbalance during foaming, which in turn affects the foaming effect. And the appearance of the maintenance part of the box has many adverse effects. In addition, in the clamped state, in order to facilitate injection, the f...

AI Technical Summary

Problems solved by technology

The above-mentioned pre-clamping technical method often blocks or restricts the foaming holes, which brings inconvenience to the injection operation, and this pre-clamping technical method can easily cause pressure imbalance during foaming, which in turn affects the foaming effect. And the appearance of the maintenance parts of the box has many adverse effects

In addition, in the clamped state, in order to facilitate injection, the foam hole is often exposed outside the fixture. In this case, injection foaming often occurs when the foam is ejected from the injection hole during the expansion process and hurts people. There are security risks

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