| 摘要 |
A method and apparatus, for individually packaging units of a compressible material, compress the material and then enclose the material within a plastic film. The unit of the compressible material, e.g., a batt of insulation, is introduced between a pair of converging conveyors whereby opposing surfaces of the conveyors apply compressive forces to major faces of the compressible material to compress the material to the desired degree. After the material is compressed to the desired degree, it is introduced between a pair of continuous sheets of plastic film. The material is located between the sheets so that lateral edge portions and transverse portions of the sheets extend beyond the peripheral edges of the compressed material. The lateral edge portions and transverse portions are then heat sealed together to enclose the units of compressed material. This operation successively packages a number of individual units with the heat sealing operation for the transverse portions of the sheets simultaneously sealing the trailing transverse portions of the sheets for one unit, sealing the leading transverse portions of the sheets for another unit and reducing the integrity of the sheets at the juncture between these transverse portions to such an extent that the sheets enclosing the units of material can be separated. |
