End disk

Details End disk End disk

2011-03-29

2011-03-29

Del Sole, Joseph S (Department: 1743)

Plastic and nonmetallic article shaping or treating: processes

Direct application of electrical or wave energy to work

Infrared radiation

C264S492000, C264S405000, C156S069000, C156S272200, C156S379600

Reexamination Certificate

active

07914725

ABSTRACT:
A plastic end disk for a hollow-cylindrical filter element has an end face plastic layer and a neighboring plastic layer. The end face plastic layer is transparent for infrared radiation. The neighboring plastic layer is absorbent for infrared radiation. The plastic end disk is connected to a folded filter medium in that the end face plastic layer is trans-irradiated with an infrared radiation source, wherein the infrared radiation is absorbed in the neighboring plastic layer so that a portion of the neighboring plastic layer and a portion of the end face plastic layer are completely melted. The infrared radiation source is removed and the filter medium is pressed into a melted area of the end face plastic layer. The filter medium is secured in the pressed-in position in the end face plastic layer until a fixed connection of filter medium and end face plastic layer has been formed.

REFERENCES:
patent: 2005/0194308 (2005-09-01), Rohrmeier et al.

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