Shin-Nihon Tech Inc. Supply Functional Mold Parts( registered trademark of Shin-Nihon Tech Inc.)

Patent Granted

Improve Molding Quality

Heat Barrier Hat

Photo of Real Thing

Advancement Award for the Japan Society of Polymer Processing 2015
Encouragement Award for the 12th 'CHO' MONOZUKURI

Innovation Parts and Components 2015
Selected for "MONOZUKURI" New Selection in KANSAI 2017

Heat Insulation
between Injection Energy-Saving Eﬀect
Nozzle and Mold Less Thermal Conduction
Injection Nozzle

Section view

SR10

Heat Barrier Hat

Heat Insulator

Heat-Resistant
Double-Sided Tape

SR11t= 1 @ SR areasOthers on Request

Higher Productivity byLowering Defective Moldings

1 Stringing Prevention (See Picture Below)○
2 Less Mold Heat Accumulation○

Sprue Bushing

What is Stringing?

(Ref. to Data① on Overside)
3 Energy-Saving Eﬀect (Ref. to Data② on Overside)○

Injection Nozzle●

Sprue Bushing

Stringing

Stringing
Molding

Without
Heat Barrier Hat●

WithHeat Barrier Hat

AS Resin(acrylonitrile styrene)
Nozzle Set
Temperature

Customer Feedback (cf. overside)
Stringing was prevented with AS resin molded.

The same quality molding was achieved with the nozzle set temp.
decreased from 230℃ to 205℃
Resin ﬂow was improved and molding pressure was reduced.

Sprue

High Eﬃcient Functional Mold Parts
Developed and Manufactured by
Shin-Nihon Tech Inc.
Plants - Osaka, Tottori, Okayama
Contact US for Any Inquiries or Orders;
Heian Boeki Co., Ltd. ‒ Osakae-mail: general@hbk-osk.com
Tel: +81 (0)6-6453-0541
Authorized Exclusive Distributor
sntec-re-14-1809-250

Molding Test Data

Less Mold
Heat
Accumulation

HeatBarrierHat

ABS resin@ 50℃ moldMeasuring
Position

set temp.

Ave. temperature

62.9℃

without Heat Barrier Hat

Ave. temperature.

pTem

60.4℃

with Heat Barrier Hat

Energy-Saving Eﬀect

Heat Barrier Hat has an eﬀect
on curbing mold temp. rise.

One Shot Time (s)Heat Barrier Hat

Band Heater Power Consumption (Wh)

sprue bushing
Without coolingsprue bushing

With Heat Barrier Hat

Improvement!
about 22.4%

36.61

41.35

Improvement!
about 5.3%

39.16

withStable
Molding Condition

Injection Nozzle(High Temp.)
MoldStringing
HeatDrooling
Accumulation
Sprue Breaking
Defectives

Energy-Saving
Eﬀect

Less ThermalConduction

Less Heat
Accumulation ・Stringing・ Drooling

Sprue Bushing(Low Temp.)

Heat Barrier
Hat

Thermal Conduction

Thermal Conduction

HeatAccumulation

Fixed Side
Movable SideMolding
Holewithout

With Heat Barrier Hat

Without Heat Barrier Hat

Customers (std. φ3)

Cooling
Sprue Bushing ofShin-Nihon Tech
makeCooling water

47.16

Part Releasing

PowerMeasurement

Band Heater(on injection nozzle)

PMMA resin @ 105℃ mold set temp.

.5℃

ce 2

rendiﬀe

Data ②

With cooling

Image of Thermal Eﬀect

Molding Test Data by Center for Advanced Die Engineeringand Technology of Gifu University

Resin Injection

Without Heat Barrier Hat

Customer Feedback

Sprue Bushing Temp. 55 min.
after start of molding

Data ①PartingLine

Fixed Side
Movable Side

SprueResinPartingLine

Eﬀective Results
Stringing
Prevention Nozzle Set Temperature (℃)

Company A

φ2Nylon 46 with additive 20%Nozzle Temperature
was decreased

Company B

φ3Ceramic Compound‑Company C

φ3Nylon 66

275 → 265

Company D

φ3‑‑Company E

φ3ABS

240 → 225

Company F

φ3AS

230 → 205

Company G

φ3PMMA‑

Company H

φ3Nylon system

Company I

φ3ABS / PP

Company J

φ3PP‑Company K

φ3 φ2PC‑Company L

φ3PA6 (Nylon) / POM (Duracon)

220 → 240 / 180 → 190

Company M

φ3POM (Duracon)

190 → 180

Company N

φ3PA with additive 35%

310 → 305

Company O

φ3Nylon 66

300 → 280

SavingOthersRetraction of the nozzle at every injection
was not required now.

Heat Barrier Hat was used every time
stringing occurred with a number of resin types.
Molding peak pressure was decreasedby 10 - 20 MPa.

‑‑/ 165 → 185
Defective
reduction

Heat Barrier Hat prevented resin
from winding around the injection machine.
The temperature of basic molding
condition was achieved without stringing.

Heat Barrier Hat acts as shock absorberto keep the nozzle from being broken.