| 摘要 |
<PICT:0848457/IV(a)/1> <PICT:0848457/IV(a)/2> A layer of easily deformable cellular material is deformed in one or more places, and is cut at the deformed part along a plane or planes lying at least partly between the upper and lower faces of the material, to form at least two layers each having at least one undulated or arched surface. The layer 21 may be cut by feeding it between driven rollers 14, 15 having surface elevations 16, those on one roller being staggered relatively to those on the other roller. The rollers 14, 15 are spaced apart and between them is disposed a cutting knife 20 which may consist of two strips or bands rapidly reciprocating relatively to each other. Two objects such as illustrated in Fig. 2 are thus produced. By arranging that the knife 20 glides along the end surfaces of the elevations 16 of one roller, holes may be formed in one of the objects. Objects of other patterns are described and illustrated. The cellular material may consist of a natural or synthetic foam or sponge substance. Specification 848,456 is referred to. |
