PET preform mould, preform mould design and price

We have served customers by developing  PET preform mould in China for the past ten years. We have provided molds of the highest quality and exceptional service to customers worldwide.

Topworks plastic mold company specializes in producing custom preform mould using the most advanced technology available to provide the best quality in the custom preform moulds industry.

Topworks Topworks plastic mold company has accumulated significant experience in the plastic injection molding industry over the last ten years in China. As a result, we have developed substantial knowledge and expertise that allow our company to offer the customers the highest level of skills, knowledge, and dedication in the preform mould market.

No doubt about it, Topworks can manufacture a complete set of PET preform moulds on time and with accuracy, at the best possible PET preform moulds prices.

It is also possible to customize the assembly of the PET preform mould to meet the specific needs of the customer, as well as custom manufacturing each PET preform to suit their needs.

The skilled workforce working for Topworks is specialized in more than one division, ensuring the creation of moulds with unique features when it comes to different types of plastic PET preform. Among our many capabilities is our ability to manufacture a comprehensive array of plastic preform molds.

In addition, the PET preform mould can be created right here in our facility, or the products can be made right here as well. With this service, everything you need can be made at one location.

preform mould

preform mould

Topworks PET  preform mould features:

  • The cavity number of PET molds ranges between 1 and 96;
  • Developed on the premise of the latest technological developments, state-of-the-art preform mould construction has been designed in consultation with European mould style.
  • Over 2.5 million injections of the same quality preforms held over the course of his lifetime.
  • Moldflow analysis diminishes the amount of NG you can see.
  • The global criterion screw neck was developed with premium nitride steel to increase its durability and hardness at the same time.
  • ASSAB s136 or DIN 1.2316 steel is used for mould impression and insert and for the slide insert because the steel is the best available quality and precision. Its excellent hardness, superior polish, anti-rust and accuracy make it an excellent choice for PET preform moulds making.
  • Patented correcting technique allows for better control of thickness and reduces possible the preform thickness disorder that might occur during preform injection molding.
  • Innovative water hoses have been developed to reduce the leaking and reduce water spots on the preforms.
  • The nozzle pin is connected to the hydraulic cylinder (Japanese or European Origin) and designed to be synchronized with the PET preform mould plates movement.
  • 26MM,PCO28MM,25/30MM,32MM,38MM,48MM,52MM,62MM, Standard PCO neck finish

PET Mould Price Classifications:

  • High price: Pneumatically-driven valve, shut off nozzle.
  • Low price: Long relics
  • Medium price: Short relics

PET preform Mould design:

Typically, to fulfill the requirements for designing a PET preform Mould for production, a preform mold must have functional strength, possess sales appeal, be competitively priced, and fulfill practical characteristics.

It is important to design a preform mould so that the most appropriate steel and processes will be utilized to make it economically feasible for the manufacturer to manufacture the PET preforms.

Our Preform mould features as follows:

  • Cooling Channel set-up

An especially designed set-up of water cooling channels combined with special finishing reduced the overall cycle time. Each particular water channel was specially processed to minimize the chance of jamming.

  • Correction Technique for Core Off-Centered

It is possible to make a difference in preform’s wall thickness of less than 0.006 mm by utilizing the Off-Center Correction Technique. The application of this system does not affect the longevity of the PET mould throughout its useful life;

  • Pin-valve System

Using a Pin-valve type of Hot Runner System for the PET preform mold, this type of Hot Runner System is effective in reducing processing times, reducing part wear & tear and lowering gate trim costs, and at the same time cutting electricity consumption.

  • Coil Heating

The Dual Heating and Cooling system can ensure that the result of heating and cooling is excellent and quality control is reliable. Heat coils keep the nozzles at a constant temperature through the full cycle time. Moreover, the Heater System is utilized to increase the hot-runner plate’s heating capacity with long life and effectiveness. We imported the heating band for the preform mould from Germany.

  • Technique of self-locking

Our PET preform mould incorporates world state-of-the-art bi-axis insert alignment and self-lock system in line with global best practices.

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Preform mold spare parts and after-sale services:

we are a devoted PET mould, preform mould, PET bottle mould manufacturer and maker in Huangyan, China.

Each set of PET preform mould undergoes strict mould trials, and preform mould trial video will be sent to the customer for confirmation before shipping from the factory and attaches a full set of the recorded parameter depending on their own and sole serial number.

Together with the PET preform mould, a full set of spare parts will be supplied for free to keep mold normal operation.

In the use of the PET preform mold, Topworks provides adequate spare parts to any request.

Topworks service department is very willing to provide technical support immediately for any possible request at any time. Also, we could send our engineers overseas for mold installing and adjusting.

 

PET preform mould video

 

PET preform mould with 8 cavities 发布人 stevencheng

 

downloadPET preform molding troubleshooting

downloadPET preform neck finish categories

 

PET preform specification
Neck size Weight (for carbonated soft drink and mineral water)
26mm 13g 16g 18g
PCO28mm 11G 15G 17G 18G 20G 21G 24G 25G 26G 27G 28G 32G 35G 40G 43G 45G 48G 52G 56G
25/30mm 14G 15G 16G 18G 20G 23G 25G 32G 34G 38G 43G
38mm 28G 30G 35G 45G 48G 50G 60G 65G 68G 72G 87G
Neck size Weight(for cooking oil)
32mm 20G 30G 35G 40G 47G 50G 55G 60G 70G  80G
37mm 48G 60G 65G 70G 73 G 85G
46mm 55G 60G 65G 70G 75G 80G 84G 90G 95G 100G 103G 105G 110G 115G 130G 140G
72mm 175G 140G 238G 255G 290G 300G

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PET injection moulding processing introduction

PET preform mould

PET preform mould

PET, also called polyethylene terephthalate, is also known as polyester. At present, the most used kind is PET-GF; it is mainly for bottle PET preform manufacturing.

The rheological property of PET is better in the molten state, and the pressure effect on the viscosity is greater than that of temperature.

Therefore, it is mainly to change the fluidity of the melt by changing the pressure.

  1.  Plastic processing .due to pet macromolecules containing grease, it is hydrophilic. Pellets in high-temperature water are more sensitive. The moisture will decrease the molecular weight of the pet, which would lead to poor color and brittle parts.
  2.  Dry; the drying temperature is 150 degrees, time more than 4 hours. And generally, it is 170 degrees, about 3-4 hours. Whether the material is completely dry can be tested by a shot to air. The recycled material ratio is generally not more than 25%, and also the reground material should be completely dry.
  3.  Injection moulding machine .due to the shorter stable time after melting and high melting point, it is necessary to use the injection machine with more multi-step temperature control and less plasticizing friction heat system .and all weight(products and runner) is not less than 2 / 3 of machine injection volume.
  4.  PET preform mould and its gate design. Generally, PET bottle preform mould is installed with a hot runner system. There should have insulation plates (about 12 mm thickness) between the PET preform mould and injection moulding machine, and the heat insulation plate can withstand high pressure. Air venting must be sufficient to avoid local overheating or fragmentation, but the depth of the slot is generally not more than 0.03 mm. Otherwise, it is easy to invite flash.
  5.  Melt temperature .it is 270-295 degrees Celsius by a shot to air, PET-GF can be set to 290-315.
  6.  Injection speed. The fast shot can prevent premature injection solidification. But too fast will lead to a high shear rate and brittle products. The shot is usually completed within 4 seconds.
  7.  Backpressure. The possible low back pressure is a better way to avoid wear. Generally, the backpressure is not more than 100 bar.
  8.  Stay time and temperature. Stay time shouldn’t be long to prevent the decline of molecular weight, and the temperature should possibly avoid more than 300 degrees Celsius.

If the downtime is less than 15 minutes, shot to air is OK; But if it is over 15 minutes, it should use PE to clean the barrel, and the barrel temperature decreases to PE temperature.

Note: recycled materials cannot be added much. Otherwise, it easy to produce poor quality products.

If the mould temperature or material temperature is not proper, it is easy to produce “opaque” pet preform.

The low mould temperature and the fast cooling rate would achieve POOR transparent PET preform.

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plastic preform moulding troubleshooting

faults causessolutions
bottom whitening of PET
preform
too low temperature of nozzle of hot runner
too low temperature of plastic materia
improve the insulation
increase the nozzle temperature
increase the material temperature
increase the injection speed
lower the packing pressure
lower down the cooling water speed
Opaque pet preform bodypoor material drying
insufficient material plasticizion
too thick wall and poor cooling
foreign material mixed
too low material temperature
ensure 4+ hrs drying
increase material temperature
increase the rotation speed of screw
verify the drying temperature and shot volume, drying temperature 165 ℃
and moisture<0.02%
improve the cooling and make the wall thinner
Pet preform from transparency
to Opaque
too high ejection temperatureimprove cooling
prelong the cooling time
change injection time
haze on the one side of the
preform
too high hold pressure
eccentric gate
lower the hold pressure
fix the PET preform mold
sliver streaking or yellowing of
PET preform
plastic decompositionlower drying temperature and prelong drying time
change the injection speed
lower the material temperature
lower nozzle temperature
voids in Pet preforminsufficient dryingimprove the drying
increase the material temperature
lower the rotation speed of the screw
uneven ring groove on the inner
wall
vapor condensation in the core and cavityimprove the workshop drying
increase the cooling water temperature
drain the PET preform mold
breakage on the gate of the
PET preform
misalignment of hotrunner nozzle and gate
undercut on the gate
gate too hot
fix the PET preform mold
fix the gate
prelong the cooling time
increase the injection speed or prelong the injection time
improve the insulation of the gate
short fill or welt line on the neck
of PET preform
poor venting
eccentric gate position
enlarge the venting groove
clean the screw neck
lower the injection speed
fix the gate
uneven wall thickness of PET
preform
poor quality of PET preform mold
eccentric gate orifice
too high injection pressure
eccentric core
fix the PET preform mold
increase the material temperature
lower down the pressure
improve the accuracy and use adjustable core and cavity
surface dent of the PET preformtoo high material temperature
too short injection time too short hold time
too quick injection speed
insufficient cooling
lower the material temperature
prelong the injection time
increase the hold pressure
lower the injection speed
increase the cooling water pressure
nozzle droolingpoor insulation
insufficient cooling
too much pressure on the melt
poor non-return on screw head
too low hold pressure
secure the gate insulation
improve the cooling clean the screw increase the hold pressure
PET preform bend after ejectioneccentric gate orifice uneven coolingfix the PET preform mold;
lower hold pressure increase the injection speed;
prelong the cooling time clean the cooling line;
increase the cooling water pressure
PET preform bend after heatingeccentric core
eccentric temperature adjust orifice uneven density of PET preform
fix the PET preform mold fix temperature adjust base
lower the temperature,especially on the bend section.
PET preform local whiteninginsufficient PET preform heating temperatureincrease the PET preform heating temperature and even the all body temperature
insufficient expanding of PET preforminsufficient air pressure
insufficient heating temperature injection fault of PET preform
increase the air pressure and air
increase the temperature of the PET preform
verify the PET preform even soften by 100 C water
crack of the preform bottomtoo high preform bottom temperature too low preform temperature severe decompositionadjust the preform temperature
check and change the preform and material,improve the drying
PET preform eccentricitytoo early blowing too high air pressure
misalignment of blow pin the bottle bottom
severe eccentricity
too low speed of blow pin
distance between blow pin and bottle bottom over 1.5 mm
too high PET preform bottom temperature
delay the blowing time
lower down the air pressure
check and fix the installment
check the PET preform
adjust the air cylinder pressure
adjust the distance between blow pin and bottle bottom to be 1.5mm or smaller
lower the preform bottom heating temperature
preform body insufficient extending on the vertical directiontoo high heating temperature local cold slug
insufficient air pressure and air volume poor venting of blow mold
too high blow mold temperature;
too thin wall
bottle insufficient vertical draw ratio
adjust the PET preform temperature increase the air pressure and air
improve the blow mold venting; improve the blow mold cooling fix the blow mold
increase the vertical draw ratio
bottle circumferential uneven wall thicknessPET preform eccentricity
uneven heating temperature
poor venting
fix the PET preform mold
improve the heating appratus
lower the problem section temperature improve the venting
protrusion on the bottomlow temperature of PET preform bottomblow earlier and adjust the heating temperature
bottle local whiteninglocal insufficient heating temperature too much local draw ratioincrease the PET preform temperature
check the design of PET preform
bottle poor vertical loadinguneven wall thickness
too high PET preform heating
poor bottle profile
make the wall thickness uniform
try low temperature and high pressure molding
improve the design of bottle
bottle ease of broken after fallingunsufficient draw of bottom of preform decomposition after over heatingimprove the draw raio of preform bottom
improve the material drying before pet preform injection molding
lower the blowing temperature
Pitting and whitening on the bottle bodyunclean air
too much moisture
install the air filter dehumidification of compressed air
too soft bottle bodypoor design
too high blowing temperature
improve the design
try low temperature and high pressure blowing
burning and odour smell after blowingtoo high blowing temperature
poor quality of compressed air poor quality of material
lower the blowing temperature
fix the air compressor and filter
use the good quality material
The water taste changed after fillingtoo much aldehyde content
bad quality material
low temperature of injection and blowing check the aldehyde content and expel bad material
 
Summary
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Author Rating
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Aggregate Rating
5 based on 1 votes
Brand Name
Topworks plastic mold
Product Name
PET preform mold
Price
USD 8000
Product Availability
Pre-Order Only