| Product: | packing mould |
|---|---|
| Product Material: | Steel |
| Shaping Mode: | Plastic Injection Mould |
| Brand Name: | PET preform mould |
| Place of Origin: | China (Mainland) |
Quick Details
Specifications
Welcome to our website
Jtp Mould is known as one of the best manufacturers and exporters for plastic injection moulds for household articles, chair mould, pallet mould, crate mould, automotive mould and so on. Our moulds are mainly exported to Italy, Australia,
Saudi Arabia,Jordan,Argentina,Colombia,India, Malaysia, Philippines and other 20 countries.
1.More detailed about 48 cavities PET preform mould
| name |
48 cavities PET preform mould
|
| mould material | S136 |
| cavity | 48 cavities |
| Shaping Mode | Plastic Injection Mould |
| runner | hot runner |
| mould design | 3D/2D |
| design days | 1 day |
| mould life | 1million shots |
| plastic material | PET |
| ejection | fully automatic |
| steel hardness | 36-52HRC(according to different steel) |
| payment | 40% of deposit by L/C T/T 60% of balance by L/C T/T |
| delivery time | 50-70 days |
| specification | depends on customers' demand |
|
|
|
2.PET preform mould specification-JTP MOULD
3.the weight of PET preform mould-JTP MOULD
PET Preform Mould Specification-JTP MOULD
Cavity
Length(mm)
Width(mm)
Thickness(mm)
Weight(kg)
Machine
4
450
240
460
350
50
6
650
240
460
550
88
8
560
400
480
800
138
10
630
400
500
950
188
12
680
400
500
1050
188
16
810
400
520
1300
268
24
670
600
550
1700
330
32
780
600
560
2000
380
48
1020
600
580
2700
500
56
1136
600
580
3050
500
72
1020
880
600
4200
650
4.the problems you may meet when making PET preform mould-JTP MOULD
the weight of PET preform -JTP MOULD
Weight of PET-preform, g
General length of PET-preform, mm
20,5 ± 0,30
88 ± 0,5
22 ± 0,50
95 ± 0,5
32 ± 0,40
125,0 ± 0,62
33 ± 0,40
133,0 ± 0,66
130,0 ± 0,66
33 ± 0,40
130,0 ± 0,65
133,0 ± 0,66
35 ± 0,40
125,0 ± 0,62
36 ± 0,50
130,0 ± 0,66
37 ± 0,50
125,0 ± 0,62
130,0 ± 0,65
133,0 ± 0,66
39 ± 0,50
133,0 ± 0,66
143,0 ± 0,71
40 ± 0,50
143,0 ± 0,71
42 ± 0,50
143,0 ± 0,71
47 ± 0,50
146,0 ± 0,73
49 ± 0,50
150,5 ± 0,75
51,5 ± 0,50
150,5 ± 0,75
We are always here helping you to solve these problems
The solution to solve the problems of PET preform mould 1-JTP MOULD
Defect
Reason
Solution to solve the defect
The bottom of PET preform became white
1.hot runner temperature is not high enough, ２.Material temperature is not high enough
１．strengthen heat insulation
２．increase the nozzle temperature
３．increase the material temperature appropriately
４．Speed up the injection speed
５．Reduce pressure maintaining
６．Reduce the speed of cooling water
Pet preform is not transparent
１．PET material didn't adequately dried
１. dry the PET material more than 4 hours
２．PET material plasticizing insufficiently
２．Increase the PET material temp.
３． preform thickness is too thick or cooling insufficiently
３．Speed up the screw speed
４．Other material have mixed to the PET material
４．Check whether the drying gate is big enough or the injection weight is suitable. The material should be dry under 165 degree, and the moisture content should under 0.02%
５．PET material temp. is too low
５．Enhance the cooling water, reduce the wall thickness
The PET prefrom become transparent to opaque
The mould temp. is too high when the product ejection
１．Enhance the cooling water
２．extend the cooling time
３．Adjust the inject time
Pet preform have haze on one side
１．pressure maintaining is too high
１．Reduce pressure
２．The gate hole is off centre
２．Improve PET perform mould
PET perform have silver streaks or become yellow
plastic decompose
１．Reduce the drying temp. and extend drying time
２．Adjust injection speed
３．Reduce the PET material temp.
４．Reduce the nozzle temp.
Pet preform have bubble
PET material didn't adequately dried
１．Enhance the dry of the PET material
２．Increase the PET material temp.
３．Reduce the screw speed
Preform have irregular groove inside
water vapour exist in cavity and core
１．Enhance the drying for workshop
２．Increase the temp. of the cooling water.
３．Dry the mould
Defect
Reason
Solution to solve the defect
Cracks on the gate area
１. Hot Nozzle and mould gate is not in the same centre ２．Gate area have undercut ３．Gate area is too hot
１．Improve the mould
２．Improve the gate
３．Extend the cooling time
４．Increase the injection speed or extend the injection time
５．Make good heat insulation
preform neck not fill well or welding mark
１．Air venting is not good ２．Eccentric injection gate
１．Increase the air vent
２．Clear the mould bush
３．Reduce the injection speed
４．Improve the gate hole
PET prefrom off centre
１．Poor mould tooling
１．Improve the mould
２．Injection gate off centre
２．Increase the material temp.
３．Injection pressure is too high
３．Reduce the injection pressure?br />
４．Mould core shifting
４．It is better to use high-precision mould, or use the interchangeable core insert
Hollow on the perform surface
１．The temp. of PET is to high
１．Reduce the material temp.
２．Injection speed
２．Reduce the injection speed.
３．pressure maintaining time is not enough
３．Increase pressure maintaining
４．Injection time is too short
４．Extend the injection time
５． inadequate cooling
５．Increase the pressure for cooling water
Gate area have wiredrawing
１．Poor heat insulation
１．Make sure the gate have good heat insulation
２．inadequate cooling
２．Increase cooling
３．Machine screw valve is not good
３．Clean the machine screw
４．pressure maintaining is too low
４．Increase the pressure maintaining
Perform become bend after demolding
１．Injection gate off centre ２．Nouniform cooling
１．Improve the mould
２．Reduce the injection pressure
３．Increase the injection speed
４．Extend cooling time
５．Clean the water channel
６．Increase the pressure and volume of cooling water
6.What technical points should we know for one new mould?
1 The molding plastic material for the plastic mould.
2 Shrinkage of plastic injection molding.
3 Request of pelluidity, color of samples.
4 The weight of the samples.
5 Projected area of product.
6 Injection molding machine specifications.
7 Tie bar distance.
8 The size of fixed plate and moving plate, length multiply by width, and hole diameter.
9 Max. mould weight and Min. mold weight
10 Mould locating ring diameter
11 Nozzle diameter and circle radius
12 Please send samples.