---
type: "Technical Data Sheet"
title: "CMC 29190, CMC 29250 and CMC 29350 – Technical Data Sheet"
description: "Technical Data Sheet CMC 29190, CMC 29250 and CMC 29350"
resource: "https://datasheets.cmc.de/pdf/cmc-29190-29250-and-29350-en.pdf"
language: "en"
product: "CMC 29190, CMC 29250 and CMC 29350"
product_family: "cmc"
document_date: "2019-03"
status: "stable"
translation: "/cmc-29190-29250-and-29350-de.md"
generated: { by: "process:cmc-datasheets/0.1.0", at: "2026-09-23T16:15:39Z" }
sources:
  - id: "pdf"
    resource: "https://datasheets.cmc.de/pdf/cmc-29190-29250-and-29350-en.pdf"
    title: "Technical Data Sheet CMC 29190, CMC 29250 and CMC 29350"
    author: "CMC Klebetechnik GmbH"
    last_modified: "2019-03-14T06:51:46Z"
---

# CMC 29190, CMC 29250 and CMC 29350 – Technical Data Sheet

> CMC TYPES CMC 29190                190 µm CMC 29250                250 µm colourless polyester films, no coatings CMC 29350                350 µm Film material PET (polyethylene terephthalate) Density 1.4 g/cm³

[PDF data sheet (binding)](/pdf/cmc-29190-29250-and-29350-en.pdf) · [Deutsche Version](/cmc-29190-29250-and-29350-de.md)

Issued: 2019-03

## Mechanical properties

| Property | Value |
|---|---|
| Tensile strength (machine direction) | ranging from about 150 to 190 MPa or N/mm² |
| Tensile strength (cross machine direction) | ranging from about 190 to 220 MPa or N/mm² |
| Elongation at break (machine direction) | ranging from about 190 to 240% |
| Elongation at break (cross machine direction) | ranging from about 140 to 200% |
| Young's module (machine direction) | ranging from about 2.95 to 3.6 GPa or kN/mm² |

## Electrical properties

```text
 Breakdown voltages                                   CMC 29190        about 17,5 kVeff.
                                                      CMC 29250        about 19 kVeff.
 according to ASTM D 149 (manufacturers' data)        CMC 29350        about 20 kVeff.
```

| Property | Value |
|---|---|
| Breakdown voltages based on IEC 60243-1 | PET films of 190 µm and above will not show any breakdown during the following voltage |
| (CMC method in ambient air and temperature, | curve: |
| electrode shapes: hemispherical vs. plate, | ramp up from 0 to 12 kVeff at 0.5 kVeff/s |
| 50 Hz) | 15 s voltage hold at 12 kVeff ramp down from 12 to 0 kVeff at 0.5 kVeff/s |

## Thermal properties

| Property | Value |
|---|---|
| Insulation class according to UL510 and IEC 60454-2 | B (130°C) |
| RTI based on UL746 according to suppliers' UL files | A (105°C) |
| Shrinkage (machine direction, 30 min 150°C) | ca. 1.0 - 1.3% |
| Shrinkage (cross machine direction, 30 min 150°C) | ca. 0.3 - 1.3% |

## Other properties

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*The technical data are average values and do not replace the user's own testing. Subject to change without notice. The PDF data sheet is binding.*