Waiting for you to follow us in these SNS, thank you. 
0086-17322110281
info@moldclamps.net

DGMF MOLD CLAMPS CO., LTD
·

Complete Specifications

Adequate Inventory

Factory Outlet

Fast Delivery

Quality Assurance

Competitive Price

Customizable

Our Mold Clamps Make Your Machines More Efficient And Durable, Lower Maintenance Costs!

Request for Inquiry
MOLD CLAMPS
+
+
NEWS    PRODUCTS
DGMF MOLD CLAMPS CO., LTD

Dynamic news
Three Injection Molding Temperatures
Original: Original | Author: DGMF Mold Clamps | Publish Time: 2021-07-17 | 867 Views | Share:
Today we talk about the three main injection molding temperatures and their settings.

3. Drying temperature in the injection molding temperature

Some materials have trace amounts of water molecules, which will promote the accelerated decomposition of polymers, such as PC, PBT, etc., so they must be fully dried before molding.

If the drying is not in place, not only will the decomposition of the material be accelerated, and a large number of bubbles will be generated, and the fluidity will also become very good and easy to produce defects such as drape. Therefore, it must be dried well before molding.

See the table below for specific settings for reference;

Commonly used plastic injection processing information

Material name

Density

Mold temperature

Material temperature

Decomposition temperature

Drying temperature

Shrinkage rate

GPPS

1.04-1.09

30-70

170-260

280

80

0.2-0.8

HIPS

1.08-1.10

40-60

190-290

310

80

0.2-0.8

ABS

1.05

40-90

200-240

280

75-80

0.4-0.7

LDPE

0.91-0.94

30-60

150-230

300

70-85

1.5-4.0

HDPE

0.94-0.97

30-80

160-280

300

70-85

1.5-3.6

PP

0.9-0.91

30-90

190-290

320

70-90

1.0-2.5

Soft PVC

1.16-1.35

20-40

140-190

200

70

1.0-2.5

Hard PVC

1.35-1.45

30-60

140-190

200

80

0.1-0.6

PA-6

1.15

20-90

210-300

320

80-100

0.8-1.5

PA-66

1.15

20-90

230-310

360

85-120

1.2-1.8

PMMA

1.18

40-100

220-250

260

80-100

0.1-0.8

PC

1.20

80-110

250-320

360

110-130

0.4-0.8

POM

1.41-1.43

60-100

160-210

230

60-80

1.8-3.5

PET

1.2-1.38

50-120

250-310

360

140-180

0.2-2.0

PBT

1.31

50-80

220-270

280

120-140

0.9-1.8

PBT Fiber

1.52

60-90

230-280

290

120-150

0.4

PPO

1.06-1.07

80-150

280-340

360

110-140

0.1-0.7

PPS

1.36

120-180

280-340

390

130-150

0.5-0.7

LCP

1.4-1.7

30-150

300-400

420

120-150

0.1-0.6