Heat Barrier Hat (HBH™)
Insulate the molding machine nozzle and mold!
HBH™ insulates the molding machine nozzle and mold,
resolving problems in resin molding.
1.What is the "stringing" in resin molding?
Stringing is a common inferior mode that occurs during resin injection molding, when incomplete solidified resin forms thread-like burrs when the product is removed.
2.What is HBH™?
2-1.Structure
HBH™ (Heat Barrier Hat) is a jig that insulates the heat between injection nozzle and Mold.
2-2.Insulation effect
3.How does HBH™ work in the molding process?
3-1.[Effect 1] HBH™ can significantly reduce "stringing".
3-2.[Effect 2] HBH™ can significantly reduce non-conforming waste.
Examples
Product A(Φ17.5mm×t 6mm, PP)
- Number of wastes per year
- 1.5 million → Almost 0
Product B(47mm×4mm×1mm, PP)
- Number of wastes per year
- 1 million → Almost 0
Product C(Φ17.6mm×t 5mm, PBT)
- Number of wastes per year
- 1 million → Almost 0
3-3.[Effect 3] HBH™ can widen the temperature settings appropriately.
Molded Products
3-4.[Effect 4] HBH™ contributes energy cost saving.
(41.35Wh − 39.16Wh) × approx. 25 yen (Kansai Electric Power Co., Inc. A 1kWh unit price for metered lighting) × 7 (H/day) × 220 (days/year)
＝ Annual electricity bill reduction of 84,315 yen per unit
The heat of the nozzle is not transferred directly to the mold. So the nozzle heater temperature setting can be lowered, resulting in energy cost savings.
3-5.Customer testimonials
| Resin | WORKING EXAMPLES (comments given by molding manufactures) |
|---|---|
| 46 nylon | "To prevent stringing, the nozzle was moved backwards after each molding. By using a HBH, it became possible to perform continuous molding while keeping the nozzle in close contact with the mold." |
| 6 nylon | "To prevent stringing, we had no choice but to lower the nozzle temperature setting. By using HBH, the nozzle heat is not absorbed by the mold, so we were able to raise the temperature setting to the desired temperature. As a result, there was no risk of insufficient resin filling (short), and molding quality was stabilized." |
| POM | same as above |
| 66 nylon | "The nozzle temperature setting could be lowered, which saved energy and stabilized molding quality." |
| ABS | "The molding peak pressure was reduced by 0 to 20 MPa. The heat from the nozzle was no longer absorbed by the mold, improving the fluidity of the resin. As a result, the range of molding conditions that can produce quality products has widend" |
| AS | "By lowering the nozzle temperature, we were able to prevent discoloration of the resin." |
| PP | There was always stringing at the tip of the sprue. By using HBH, stringing disappeared and the occurrence of non-conformance was greatly reduced. A major molding manufacturer. Total purchases: 186 units. |
| "Conventionally, in order to prevent stringing, it was necessary to cool the mold sufficiently before opening it, which made it impossible to shorten the molding time. By using HBH, stringing can be suppressed and the molding time can be shortened." |
4.HBH™ works well with wide variety of plastic materials.
HBH can be used for many types of resins, including nylon.
Effects vary depending on the resin specifications and grade.
- 6 nylon
- 46 nylon
- 66 nylon
- ABS
- AS
- PBT
- PC
- PFA (fluororesin)
- PMMA
- POM
- PP
- Ceramic compound
etc.
5.HBH™ usage scenarios
- ①Thermoplastic resin injection molding manufactures.
- ②Small resin products that require high quality. For examples
(For examples)
- · Gaskets and insulating parts for batteries
- · Resin lenses
- · Electronic parts (connectors, switches, etc.)
- · Resin gears for watches
- ③Cold runner mold companies
6.HBH™ (custom-made product) for molding machine nozzles with a radius of 19 mm.
In addition to the HBH™ (standard product) for molding machine nozzles with a radius of 10 mm, there is also the HBH™ (custom-made product) for molding machine nozzles with a radius of 19 mm.
SR10 (standard product)
SR19 (custom-made product)
Awards
- 2021 Received the KANSAI Regional Invention Encouragement Award
- 2017 Selected for "MOMODZUKURI" New Selection in KANSAI 2017(METI)
- 2016 Selected for "Gold EcoTech"(Osaka Pref.)
- 2016 Received the Technological Advancement Award of the Japan Society of Polymer Processing
- 2015 Received the "Super" Monodzukuri Parts Grand Prize Encouragement Award
Media Coverage
CONTACT
2-2-81 Hama,Tsurumi-ku, Osaka
538-0035 Japan
+81-6-6911-1183
Reception time: 8:30-17:00(Except for Saturdays (that fall on holiday), Sundays, and holidays)
Contact Daiki Izumi or Oyamada at Sales Section.