| 摘要 |
<p>A method and an apparatus for wrapping a product (31), particularly a bundle of newspapers or magazines, especially an extra thick bundle or an extra thin bundle comprising a few or a single newspaper or magazine. The product is carried on a conveyor system through a plane towards a curtain of film (26) formed by an upper (6) and a lower (16) sheet of film. The curtain thus accompanies the product and is auto-sealed behind the product, after which the sheets of film are separated in the middle of the sealing region, the curtain of film being re-established and the product being provided with a wrapper. The deflection roller (9) or the like which defines the upper limit of the sheet of film is carried by drive means such as cylinders (30) which are arranged to displace the deflection roller in such a way that its upper portion will be supplied quickly and substantially without tensile force at the start of a wrapping operation if the height of the product is slight, or at the end of the wrapping operation if the height of the product is particularly great.</p> |
