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Technical Drawings
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Bushing Selection Guide
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ABS (Acrylonitrile-Butadiene-Styrene)

General Moulding Notes

  • ABS requires a cool gate area - excessive gate heat may cause stringing and part surface distortion.
  • Mid-range gate diameters are generally suitable.
  • Pinpoint gate vestige is usually neat, typical height 1/3 - 1/2 of gate diameter.
  • Filled polymers may require special wear resistant tips - check with factory.

Step 2: Click on the code for the tip style that you wish to use.

Code

Tip Style

Suitability

Comments

Sprue Tips For Gating On Runners

SS

Short Sprue

Good

XS

Extended Sprue

Good

NS

Nylon Sprue

Fair

High pressure drop. May get stringing.

NX

Nylon extended sprue

Fair

High pressure drop. May get stringing.

Pin Gate Tips For Gating On Parts

PP

Pinpoint

Good

Gives minimal gate pip, no witness ring

PX

Pinpoint Extended

No

Gate may freeze

PT

Pinpoint thru' flow

Good

Gives minimal gate pip, no witness ring. Gate pip height may increase.

EXT

Extended Hot Pinpoint

Fair

Gives minimal gate pip, no witness ring, high pressure drop.

RG

Ring Gate

Good

Leaves witness ring on part.

RT

Ring Gate thru' flow

Good

As above. Gate pip height may increase.

CG

Collar Gate

Good

Gives minimal gate pip, no witness ring.

CT

Collar gate thru' flow

Good

As above. Gate pip height may increase, gate may freeze.

Valve Gate Tips For Gating On Parts

VP

Valve pinpoint gate

Good

No witness ring on part.

VR

Valve ring gate

Good

Leaves witness ring on part.

VC

Valve collar gate

Good

No witness ring on part

Special Gate Tips For Gating On Parts

MT

Multi-Tip

Good

Not suitable for frequent colour changing

TG

Tunnel Gate

Good

Not suitable for frequent colour changing


Step 3: Choose Your Bush Size

Maximum shot weight per bush (Grams)

  • Find the bush size that most closely matches your required shot weight with your choice of tip and click on the shot weight to be taken to the technical data for that range.
  • If approaching the maximum for a particular bush size, consider using the next larger size, especially if a long bush is required.
  • Polymer grade, viscosity, fillers and part dimensions also affect the choice of bush. If in doubt - ask.
  • O = This tip / bushing combination is not currently available.
  • X = This selection is not recommended.

Code

Sprue Gate Tips

Micro

DS

PLV187

PLV250

PLV375

PLV625

SS

Short Sprue

50

150

100

300

1000

2000

XS

Extended Sprue

50

O

100

300

1000

2000

NS

Nylon Sprue

O

150

O

O

O

O

NX

Nylon Extended Sprue

40

150

100

300

1000

2000

Code

Pin Gate Tips

Micro

DG

PLV187

PLV250

PLV375

PLV625

PP

Pinpoint

50

150

O

O

O

O

PX

Pinpoint Extended

X

X

O

O

O

O

PT

Pinpoint Thru' Flow

O

150

O

O

O

O

EXT

Extended Hot Pinpoint

25

O

O

O

O

O

RG

Ring Gate

O

O

50

300

1000

2000

RT

Ring Gate Thru' Flow

O

O

O

300

1000

2000

CG

Collar Gate

O

O

50

300

1000

2000

CT

Collar Gate Thru' Flow

O

O

O

300

1000

2000

Code

Valve Gate Tips

Micro

DVG

LVG187

LVG250

LVG375

LVG625

VP

Valve Gate Pinpoint

O

125

O

O

750

1500

VR

Valve Ring Gate

O

O

O

O

O

O

VC

Valve Collar Gate

O

O

O

O

O

O

Code

Multi-Tips

MT32D

MT45D

MT

Multi-tip Pinpoint

50

50

Code

Tunnel Gate Tips

DT18

DT25

DT32A

DT32C

TG

Tunnel Gate thru' flow

50

50

O

O


Direct Feed Applications - Recommended Options

Bush Series

Micro

DG/DS

PLV187

PLV250

PLV375

PLV625

Option / Part Numbers

1: Add rear insulation washer

MAX10027

MA010024

MAX10027

MA010024

MA010042

MA010043

2: Add front insulation washer

IR-156

IR-250

N/A

IR-250

IR-375

IR-625

3: Add heater band to bush head

HB2516

HB3815

HB2508

HB3815

HB5012

HB6312

Option Required?

1

2

3

1

2

3

1

2

3

1

2

3

1

2

3

1

2

3

ABS


Yes

Yes

Yes

Yes


Yes



Yes

Yes


Yes

Yes


Yes

Yes