| 摘要 |
A method for the production of a double-walled container by means of rotational moulding, comprises the following steps: provision of a starting product (10) that is provided with external ribs (12), placing the starting product (10) in a rotary mould (1-3) that is intended for moulding the outside wall (15) of the container, the dimensions of the rotary mould (1-3) and of the ribs (12,21) being such that the starting product is essentially confined without play in the rotary mould (1-3) by contact of the ribs (12,21) with the rotary mould (1-3), feeding plastic material into the rotary mould (1-3), making said plastic material melt and spread to form the outside wall (15) by supplying heat and rotating the rotary mould (1-3), making the ribs (12,21) melt at the location of the regions (16) thereof that are in contact with the rotary mould (1-3), fusing the ribs (12,21) with the melted plastic material intended for the outside wall (15) at the location of the contact regions (16), cooling the rotary mould (1-3) and making the material for the outside wall (15) and the ribs (12,21) of the starting product (10) fused thereto solidify with the formation of joins (25,26) between the outside wall (15) and the inside wall (22) that has been produced from the starting product (10), removal of the container from the rotary mould (1-3). <IMAGE>
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