Pröll - Noriphan HTR-N Series

Application Area
NORIPHAN® HTR N is a solvent-based, single-component screen printing ink based on a thermoplastic resin with high-temperature resistance.
Films printed with NORIPHAN® HTR N are highly compatible with the IMD/FIM process (In-Mold Decoration/Film Insert Molding).

Forming Capability
Temperature and wash resistance during injection molding
Good and permanent adhesion with injection molding resins (preferably PC)

IMD/FIM Technology Printing Equipment

*Tunnel Oven with final active cooling:

3 heating zones, minimum 80°C (175 °F), with high air exchange rate
Active cooling adjustable down to 15°C (60°F)

*Box Oven, adjustable up to 90°C (195°F)
*Racks for individually placing printed sheets

Different suppliers of IMD/FIM parts may use different production equipment, requiring individual adjustments of process parameters. As a result, the production parameters for the same IMD/FIM parts at different suppliers may vary greatly to achieve the best results for each supplier.

Films

PC Film: Makrofol®
PC Mix Film: Bayfol®

Surface
Glossy. The gloss level may vary depending on the substrate structure.

Color Tones

Basic Colors (Halogen-Free)
Basic Colors (Halogen-Containing)
For higher temperature resistance (better wash resistance), basic colors can also be supplied with the /050 designation (e.g., NORIPHAN® HTR N 952/050, high-temperature resistant Black). However, /050 versions may have slightly reduced forming ability and may tend to curl in printed films.
Halogen-Free Metallic Colors
Silver Inks (can be used to mix gold and other metallic colors)
Non-Conductive Colors

A version with light solvents can be requested with the xxx/444 designation. For increased temperature resistance, versions with the xxx/050 designation can also be requested. To prevent clogging in the mold, special tones based on NORIPHAN® PCI N can be used.

Effect Pigment Colors

Metallic, color-changing, pearlescent, fluorescent, and other colors are available upon request.
Note: The adhesion (peel strength) of silver and effect inks is lower compared to basic colors. The back molding of special effect colors can alter the direction of the pigment particles.

Mixed Color Tones
Transparent mixed colors with a small proportion of NORIPHAN® HTR N 945 White may show coverage issues. This issue can be resolved by adding NORIPHAN® HTR N 943 Mixing White. However, NORIPHAN® HTR N 943 should be tested according to printing conditions (thinner type, thinner ratio, print speed, etc.).

Halftone Inks
IMD/FIM halftone inks are available with the NORIPHAN® PCI N designation.

Mesh Number

Polyester mesh: 77-48 /cm to 150-31 threads/cm (195-48 threads/inch to 380-31 threads/inch)
Stainless steel mesh can be used for special requirements.
Recommended mesh numbers for standard silver:
NORIPHAN® HTR N 770 – 120-34 threads/cm (305-34 threads/inch) or wider
NORIPHAN® HTR N 782 – 77-48 threads/cm (195-48 threads/inch) or wider
NORIPHAN® HTR N 790 – 100-40 threads/cm (255-40 threads/inch) or wider

Stencil
Solvent-resistant emulsions should be used. For excellent results during long production times, Pröll Diazo-UV-Polymer Emulsion Norikop 10 HQ is used.

Auxiliary Products
All of the auxiliary products listed below are halogen-free (HF).

Thinner (Reducer):
Thinner F 013 (fast)
Thinner M 201 (medium)
Thinner S 403 (slow)

Retarder Pastes:
NORIPHAN® HTR N 097/002
NORIPHAN® HTR N 097/005 (fast)
NORIPHAN® HTR N 097/006 (medium)
NORIPHAN® HTR N 097/007 (slow)

Auxiliary products can be mixed with each other in the desired proportions.
For large printing areas, only Thinner F 013 and Thinner M 201 should be used. Recommended thinner addition ratio: 15%-20%.

To print fine details, Thinner S 403 can be used alone or in combination with retarder pastes (NORIPHAN® HTR N 097/005, 097/006, 097/007).
The following ratios are recommended:

10% – 20% Thinner S 403
5% – 10% NORIPHAN® HTR N 097/007

NORIPHAN® HTR N 097/008: Ready-to-use Retarder Paste, a mixture of Thinner M 201 and Retarder Paste NORIPHAN® HTR N 097/007 (mixing ratio 1:1).

Matting Agent

NORIPHAN® HTR N Matt Paste 098 Addition ratio: approximately 20%

Levelling Paste

Adding 10% – 20% NORIPHAN® HTR N L63750 to transparent inks can improve the overall ink leveling properties.

Elastifier

NORIPHAN® HTR N 061 is used to improve the formability of the ink layer. Addition ratio: approximately 5%

Antistatic

NORILIN® C is used to prevent static charge while printing metallic inks. Addition ratio: 0.5%

Foam Cutter

Defoamer 5702 prevents possible defects in the color gradient (craters, bubbles). Excessive Defoamer 5702 can cause white spots. Addition ratio: max. 0.5%

Stencil and Equipment Cleaning