| 摘要 |
PCT No. PCT/EP94/03256 Sec. 371 Date Mar. 13, 1996 Sec. 102(e) Date Mar. 13, 1996 PCT Filed Sep. 29, 1994 PCT Pub. No. WO95/09771 PCT Pub. Date Apr. 13, 1995The invention relates to a method and an apparatus for producing bag packs of plastic foil containing liquid or viscous contents. The production method, which may be divided into two parts, relates first to a method of producing the packaging material and secondly a method of using the packaging material for producing bag packs. The packaging material is produced in that a hose of plastic foil is extruded and, while the material is still warm, flattened so that the insides of the plastic hose come into contact with one another and are brought to adhere to one another in a readily rupturable mechanical bond, so-called blocking. The flattened plastic hose is printed with the desired text or decor, whereafter the flattened hose (6) is divided into part webs (7) each of the desired width and decor. The packaging webs (7) are converted into packages in that the mutually adhering layers (14, 15) are separated from one another, a filler pipe (16) is inserted between the webs whose edge zones are reunited with one another in a tight and mechanically durable union, for the formation of a tube (12) which is filled with the intended contents, whereafter the tube (12) is divided into individual package units (19) by repeated flattenings and sealings by means of specifically provided sealing devices (20) in zones at right angles to the longitudinal direction of the tube (12) |
