
Specialist in high-performance injection molds for closure caps and cartridges, developed and manufactured in Austria.

htw molds gmbh
Walgau, AustriaNew on Amplifa
About htw molds
htw molds gmbh is an Austrian toolmaking specialist based in the Walgau region, focused on the development and manufacture of injection molds for closure caps (cap molds) as well as for silicone and grease cartridges. The company offers a mold design service and, on request, manufactures pilot molds with a reduced number of cavities, whose results are transferred to the production molds. All molds can be tested under real conditions in the company's own In-house Testing Center. Products include, among others, the Flip Top Cap Mold with 16 cavities and cycle times of 10–12 seconds with self-closing unit, as well as cartridge molds with a valve gate system for improved filling and quality. The portfolio is complemented by the Toolstar Hotrunner System including nozzle tip cleaning at the machine and worldwide spare parts management. With over 30 years of experience, htw molds supplies customers in 40 countries and supports its molds with worldwide service.
- Site
- Walgau
- Processes
- Toolmaking / injection molds (cap molds), Mold Design Service, Flip Top Cap Mold, 16 cavities, cycle time 10–12 s, self-closing unit, Silicone cartridge molds, 2/4/6/8/12/16 cavities, cycle time 10–12 s, valve gate, Grease cartridge molds (Grease Cartridges), 2/4/6/8 cavities, cycle time 12–14 s, valve gate, Pilot mold creation and trials in the company's own testing center, Toolstar Hotrunner System (hot runner system incl. nozzle tip cleaning at the machine,, Mold making for closure caps (cap molds)
- Materials
- Steel (tool steel, mold making), Silicone, Tool steel, Toolstar Hotrunner System
- Certificates
- In-house Testing Center (mold testing)
- Industries
- Plastics processing, Closure caps/Closures, Packaging industry, Filling technology (silicone and grease cartridges), Silicone and grease cartridges
- 01
Mold Design Service
- 02
Tool steel machining and mold making
- 03
Pilot mold creation
- 04
Mold testing in the In-house Testing Center
- 05
Delivery and worldwide service incl. spare parts management
Materials and Processes
Tool steel
Mold-making steel for high-stress injection molds – 'Made of steel' as the company's guiding quality principle.
Silicone
Processing medium for silicone cartridge molds with valve gate and cycle times of 10–12 seconds.
Toolstar Hotrunner System
Hot runner system with nozzle tip cleaning directly at the machine and independent spare parts management.
Locations

Walgau
ATHeadquarters, toolmaking and mold testing center
- Lot size
- Single and production molds (pilot mold to large mold)
- Materials
- Tool steel
- In-house Testing Center (mold testing center)
Molds and Components




Inside the production






Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Toolmaking / injection molds (cap molds)Engineering | – | – | – | – | Stahl |
| Mold Design ServiceEngineering | – | – | – | – | – |
| Flip Top Cap Mold, 16 cavities, cycle time 10–12 s, self-closing unitPlastics | – | – | – | – | Silikon |
| Silicone cartridge molds, 2/4/6/8/12/16 cavities, cycle time 10–12 s, valve gatePlastics | – | – | – | – | Silikon |
| Grease cartridge molds (Grease Cartridges), 2/4/6/8 cavities, cycle time 12–14 s, valve gatePlastics | – | – | – | – | – |
| Pilot mold creation and trials in the company's own testing centerTesting | – | – | – | – | – |
| Toolstar Hotrunner System (hot runner system incl. nozzle tip cleaning at the machine,Plastics | – | – | – | – | – |
1 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| In-house Testing Center (mold testing center) | – | – | – | – | Austria |
Additional services
Reference customers
Quality and Testing
All molds are tested in the company's own In-house Testing Center under real conditions; pilot molds with a reduced number of cavities are also tested before the production tool. Under extreme conditions such as low cycle times, particular attention is paid to processing parameters and material selection.
| Evidence | Walgau |
|---|---|
| In-house Testing Center (mold testing) |
History
- über 30 Jahr
Many years of experience in mold making for high-quality closures flow into the development of the cartridge molds.
- 2025
Bronze at the Export Award – recognition for the quality of the tools and the strong international market position.