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ASTM D6105-04

Current Revision

Standard Practice for Application of Electrical Discharge Surface Treatment (Activation) of Plastics for Adhesive Bonding

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1.1 This practice covers various electrical discharge treatments to be used to enhance the ability of polymeric substrates to be adhesively bonded. This practice does not include additional information on the preparation of test specimens or testing conditions as they are covered in the various ASTM test methods or specifications for specific materials.

1.2 The types of discharge phenomena that are used for surface modification of polymers fit into the general category of nonequilibrium or non-thermal discharges in which electron temperature (mean energy) greatly exceeds the gas temperature.

1.3 The technologies included in this practice are:

Note 1—The term "corona treatment" has been applied sometimes in the literature to the different electrical discharge treatment technologies described in Section . This practice defines each electrical discharge treatment technology at atmospheric pressure presented in Section and draws the necessary distinctions between them and corona discharge. See Test Method D 1868 for "corona discharge."

1.4 The values stated in SI units are to be regarded as the standard.

1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Specific hazard statements appear in Section 6.


Bonding of many polymeric substrates presents a problem due to the low wettability of their surfaces and their chemical inertness. Adhesive bond formation begins with the establishment of interfacial molecular contact by wetting. Wettability of a substrate surface depends on its surface energy. The surface activation with electrical discharges improves wettability of polymers and subsequent adhesive bonding. The surface activation with electrical discharges results in addition of polar functional groups on the polymer surface. The higher the concentration of polar functional groups on the surface the more actively the surface reacts with the different polar interfaces.

To achieve a proper adhesive bond the polyolefin substrate’polar component should be raised from near zero to 15 to 20 mJ/m2.

The pre-treated surfaces are ready for application of the adhesive immediately after the treatment.

SDO ASTM: ASTM International
Document Number D6105
Publication Date April 1, 2004
Language en - English
Page Count 5
Revision Level 04
Supercedes
Committee D14.40
Publish Date Document Id Type View
April 1, 2004 D6105-04 Revision
March 10, 1997 D6105-97 Revision
June 1, 2019 D6105-04R19 Reaffirmation
May 1, 2012 D6105-04R12 Reaffirmation