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process for welding of just below their kristallitschmelz point verstreckten and thus consolidated polyethylene crystalline or teilkristallinen thermoplastic plastics, such as low-pressure polyaethylen and polypropylene
process for welding of just below their kristallitschmelz point verstreckten and thus consolidated polyethylene crystalline or teilkristallinen thermoplastic plastics, such as low-pressure polyaethylen and polypropylene