Plastic joining

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Plastic joining is the method of joining semi-finished products of plastic materials together or to other materials as a fabrication process or damage repart. Joining methods can be classified into three categories:

  1. Mechanical fastening,
  2. Adhesive bonding,
  3. Welding.

Mechanical fastening[edit]

Main article: Fastener

Mechanical fastening methods can offer an advantage of disassembly, but have drawbacks arising from stress concentrations, galvanic corrosion, mismatch of thermal expansion coefficients, etc. which rivets, screws and ropes can introduce (see fasteners).

Adhesive bonding[edit]

Main article: Adhesive bonding

Adhesive bonding, which involves a chemical process where a substance is used to create a bond between two materials, is problematic because of extensive surface preparation, long curing time, the difficulty of bonding adhesive materials to plastics, etc.


Main article: Plastic welding

Welding can eliminate these shortcomings largely, but its applications are restricted to thermoplastics.[1][2]

See also[edit]


  1. ^ R.Crawford (1985). Plastics and Rubber-Engineering Design and Application. MEP Ltd=Location=London. p. 148. ISBN 0-85298-571-1. 
  2. ^ O.Balkan, H.Demirer, A.Ezdesir, H.Yildirim (2008). "Polym.Engin.Sci.". 48: 732. ISSN 1548-2634.