Plastic Forming

Close-up of a black industrial pipe with ridged, spiral grooves, partially surrounded by machinery, photographed in a factory setting with a shallow depth of field.

Plastic membranes and linoleum are easily molded with hot air. Plastic tubes and plexiglas windows can be bent when heated up and keep their shape after cooling down.

When laying membranes on roofs or in underground engineering applications, the plastic is able to form at awkward points, making it easier to process later on. When plastic or linoleum flooring is being laid, hot air can also be used to shape the single ply into the required form, raising it into corners and laying on stairs, for example.

Process Heat Molding

Thermoplastics can be heated up until they soften enough for you to reshape them. To ensure that the material is sufficiently flexible for the forming process, hot air is used to heat up either the entire component or just certain parts of it.

Close-up of an industrial machine with metal pipes, hose connections, and protective mesh guards, situated on a factory floor with metallic clamps and control components visible.

In principle, the deburring of injection-molded plastic components is also classified as a forming process. The fine but unsightly burrs are heated to such an extent that they melt and reshape under the effect of surface tension.

If several plastic parts or a sprue and a plastic part are joined together by narrow webs after the injection or blow moulding process, they can be separated by the targeted use of hot air.

Plastic Moulds at the Plumber or Tinsmith

Hands bending a white plastic pipe using a metal pipe bender tool, set against a plain background, demonstrating manual pipe shaping or installation.

When processing thermoplastic pipes, e.g. g. tinsmith and/or sheet-metal work, the tubes are molded with hot air. To do this, the tube is first heated and then shaped into the desired form. After cooling, the tube retains its new shape.

Connecting Pipes

When joining two pipes with different diameters (oversize fit), the surrounding pipe opening (socket) is heated to allow it to expand. The inner tube is then inserted. After cooling, the sleeve shrinks to its original size, resulting in a permanent and tight connection.