Our R & D team
All of them are engineers with at least 10 years of experience in plastic bottle equipment
Our Advantages
Provide all equipment for PET plastic bottle equipment, one-stop shopping
Our Services
The repurchase rate exceeds 50%, customers give consistent praise, and the shelf life is at least 24 months.
Why Choose Us？
- Focus on product quality and service
As a 20-year-old Chinese factory specializing in PET plastic bottle packaging equipment, we bring extensive experience and quality to every project. Our main offerings—blow molding machines, blow molds, and complete filling line solutions—provide clients with a comprehensive, reliable one-stop solution from design to installation.
Our factory is equipped with advanced precision machinery, and we have a team of over 20 highly experienced R&D engineers, each with more than 10 years in the industry. This expertise enables us to deliver efficient, durable, and high-performance equipment that meets diverse client needs across industries.
In addition to our high standards in production, we pride ourselves on our skilled installation team and responsive after-sales service, ensuring that clients receive continuous support and seamless operation from day one.
What sets us apart is our commitment to customer satisfaction through customized, client-driven solutions. We understand the critical importance of production efficiency and consistent quality, and our dedicated team is here to provide trusted solutions that empower your business. Choose us as your partner for quality, reliability, and value in PET packaging solutions.
main products
- high quality and service
bottle design free
- Professional design team
- free design
- Free proofing
Experience excellence with us – we offer free bottle design and prototyping. Let us shape your ideas into reality!
20 years of physical factory
Jindong Machinery has a self-built factory building of 8,000m³ and a 20-year history.
Our Strength
- Industry leader in bottle blowing machines
Manufacturing Capabilities
We sell 120 sets of automatic bottle blowing machines every year, and our customers are in 20 countries.
Quality and Service
We always focus on product quality and after-sales service, and can provide a variety of technical support such as online and on-site.
Four-step ordering
- Professional and responsible and quality control
Requirement Communication
- Define Production Goals
Communicate via phone or online to understand your production needs, including bottle design, output requirements, and budget, ensuring the best automatic blow molding machine solution is recommended.
Solution Confirmation
- Finalize Custom Solutions
Based on your requirements, provide a detailed plan covering equipment specifications, mold design, and process workflows to ensure the product meets market and filling standards.
Contract Signing
- Confirm and Make Payment
Description: Once both parties agree, sign the purchase contract. After receiving your deposit, we will arrange production and equipment testing to ensure quality and timely delivery.
Equipment Delivery
- Install and Train
Description: Upon production completion, we arrange transportation and provide on-site installation, commissioning, and operational training to ensure smooth production startup.
water bottle filling line
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Fresh juice filling line
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Edible oil filling line
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Daily chemical filling line
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main products
- high quality and service
Provide one-stop customized solutions for PET plastic packaging from injection blow molding to filling.
Brand Name
Brand Name
Brand Name
Brand Name
Brand Name
main products
- high quality and service
Provide one-stop customized solutions for PET plastic packaging from injection blow molding to filling.
PET plastic bottle all equipment solutions
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Our Classes
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Nam quam nunc, blandit vel, ridiculus mus. Donec quam Lorem ipsum dolor sit amet, consectet adipiscing elit,sed do eiusm por incididunt ut labore et dolore magna aliqua.
The bottom of the PET preform is whitish？
Reason
1. Insufficient temperature of hot runner
2. Insufficient material temperature
Elimination method:
1. Strengthen heat insulation measures 2 . Increase the temperature of the nozzle here 3 . Properly increase the material temperature 4. Speed up the injection speed5. Reduce the holding pressure6. slow down cooling water flow
PET preforms are opaque?
Reason:
1. Insufficient drying of raw materials
2. Insufficient plasticization of raw materials
3. pp> preform wall thickness is too large or insufficient cooling
4. mixed with other plastics
5. Material temperature is too low
Elimination method:
1 Guaranteed to dry for more than four hours 2. Raise the material temperature 3. Increase the screw speed 4. Check whether the temperature of the drying material is too low or the injection volume does not match. It is necessary to ensure that the raw material is dried at 165 degrees until the moisture content is less than 0.02%. 5. Enhanced cooling, thinner wall thickness
There is fog on one side of the PET preform？
Reason:
1. Holding pressure too high
2. Bottom film gate hole eccentric
Elimination method:
1. reduce stress
2. Correction mold
PET preforms have air bubbles?
Reason:
Insufficient drying
Elimination method:
1. Strengthen drying 2. Increase material temperature 3. Reduce screw speed
Depression on the PET preform surface？
Reason:
1. Material temperature is too high
2. injection rate is too short
3. Dwell too short
4. Injection time is too short
5. Insufficient cooling
Elimination method:
1. Lower material temperature
2. Reduce the injection rate
3. increase pressure
4. increase injection time
5. increase water pressure
PET preform gate with wire drawing？
Reason:
1. Poor insulation
2. Insufficient cooling
3. pressure in heat flow
4. Bad screw check
5. Holding pressure too low
Elimination method:
1. Guaranteed heat insulation at the gate
2. increase cooling
3. Reinforce the inverted cable
4. Clean the screw nozzle
5. increase pressure
Bending of PET preform after demoulding?
Reason:
1. Gate hole eccentric
2. uneven cooling
Elimination method:
1. Correct mold 2. Reduce the holding pressure
3. Increase injection speed 4. extended cooling
5. Clean up waterways 6. Increase cooling water pressure
Uneven PET preforms？
Reason:
1. Poor mold manufacturing
2. Gate hole deviation
3. Injection pressure too high
4. core shift
Elimination method:
1. Correction mold
2. Raise material temperature
3. turn down the pressure
4. Mold with high strength, high precision and adjustable core structure
PET bottle transparency is not good？
reason:
1. The heating temperature is too high. 2. The heating time is too long. 3. Compressed air contains moisture. 4. The embryonic tube itself is opaque. 5. The embryo tube design is inappropriate. 6. The inflation rate is too small
Elimination method:
1. Lower the temperature 2. Shorten the heating time 3. Use a dryer to remove moisture 4. Improve the quality of the embryo tube, select materials, and increase the dryness of the raw materials 5. Improve the size design of the embryo tube 6. Reduce the diameter of the preform.
PET bottle whitish？
reason:
1. The heating temperature is too low. 2. The embryonic tube wall thickness is uneven. 3. The thickness of the embryo tube is too thick and the heating penetration is insufficient.
Elimination method:
1. Increase the temperature or slow down the rotation speed 2. Improve the quality of the embryo tube 3. Reduce the thickness of the embryo tube, or try to add a heating device cover to increase the temperature distribution surface of the preform.
The position of the nozzle at the bottom of the PET bottle is offset?
reason:
1. The blowing time is too early 2. The stretching rod has not been lowered to the bottom 3. The stretching rod deviates from the center line of the bottle axis 4. The wall thickness of the embryo tube is uneven or the injection density is uneven 5. Uneven heating
Elimination method:
1. Delay the blowing time or increase the descending speed of the stretching rod 2. Adjust the position of the magnetic pole switch 3. Adjust the position of the stretching rod 4. Improve the quality of the embryo tube 5. Improve the heating conditions, or check whether there is any problem with the rotation of the preform.
Uneven wall thickness of PET bottle？
reason:
1. The position of the stretching rod is not in the center of the preform 2. The blowing holes are asymmetrical and have different hole diameters. 3. The stretching ratio is too low or the blowing ratio is too small. 4. The embryo tube does not rotate in the heating furnace. 5. The embryonic tube wall thickness is not good. Injection density is uniform or uneven
Elimination method:
1. Adjust the position of the stretching rod 2. Adjust the position and diameter of the blowing hole 3. Increase the stretching or inflation ratio 4. Check the rotating device 5. Improve the quality of the preform.
The upper part of the PET bottle is too thick？
reason:
1. The temperature of the upper part is too low 2. The vent hole of the mold is too far from the upper part 3. The stretching ratio is too low 4. The inflation ratio of the upper part of the bottle is too low 5. The stretching rod speed is too slow
Elimination method:
1. Heating the upper part 2. Adjust the position of the exhaust hole 3. Increase the stretching ratio 4. Change the bottle shape 5. Adjust stretch rod speed.
The bottom of the bottle is too thin?
reason:
1. The upper part of the material does not stretch downward. 2. The bottom of the preform is designed to be thin. 3. The bottom temperature is too high.
Elimination method:
1. Delay the start of blowing time 2. Reduce the bottom temperature 3. Increase the thickness of the bottom of the preform.
Bottle parting line thickness？
reason:
1. Insufficient mold clamping pressure 2. Sealing time too early 3. Mold problem 4. The size of the preform mouth does not match the mold
Elimination method:
1. Increase the clamping pressure and adjust the angle of the clamping stay (<5 degrees). 2. Move the clamping stroke switch position backward. 3. Repair the mold or check the assembly position of the mold, such as whether the guide rails are aligned and the columns are loose or whether the mold is not properly aligned. Pressure 4. Repair the matching position of the mold teeth.
PET bottle bottom blasting？
reason:
1. The delayed air blowing time is too short 2. The delayed mold opening time is too short 3. The temperature is too high 4. The exhaust valve does not work
Elimination method:
1. Extend the delayed air blowing time or increase the descending speed of the stretch rod 2. Extend the delayed mold opening time 3. Cool down 4. Clean the exhaust valve with gasoline.
PET bottle transparency is not good？
Reason:
1. The heating temperature is too high. 2. The heating time is too long. 3. Compressed air contains moisture. 4. The embryonic tube itself is opaque. 5. The embryo tube design is inappropriate. 6. The inflation rate is too small
Elimination method:
1. Lower the temperature 2. Shorten the heating time 3. Use a dryer to remove moisture 4. Improve the quality of the embryo tube, select materials, and increase the dryness of the raw materials 5. Improve the size design of the embryo tube 6. Reduce the diameter of the preform.
PET bottle whitish？
Reason:
1. The heating temperature is too low. 2. The embryonic tube wall thickness is uneven. 3. The thickness of the embryo tube is too thick and the heating penetration is insufficient.
Elimination method:
1. Increase the temperature or slow down the rotation speed 2. Improve the quality of the embryo tube 3. Reduce the thickness of the embryo tube, or try to add a heating device cover to increase the temperature distribution surface of the preform.
The position of the nozzle at the bottom of the PET bottle is offset?
Reason:
1. The blowing time is too early 2. The stretching rod has not been lowered to the bottom 3. The stretching rod deviates from the center line of the bottle axis 4. The wall thickness of the embryo tube is uneven or the injection density is uneven 5. Uneven heating
Elimination method:
1. Delay the blowing time or increase the descending speed of the stretching rod 2. Adjust the position of the magnetic pole switch 3. Adjust the position of the stretching rod 4. Improve the quality of the embryo tube 5. Improve the heating conditions, or check whether there is any problem with the rotation of the preform.
Uneven wall thickness of PET bottle？
Reason:
1. The position of the stretching rod is not in the center of the preform 2. The blowing holes are asymmetrical and have different hole diameters. 3. The stretching ratio is too low or the blowing ratio is too small. 4. The embryo tube does not rotate in the heating furnace. 5. The embryonic tube wall thickness is not good. Injection density is uniform or uneven
Elimination method:
1. Adjust the position of the stretching rod 2. Adjust the position and diameter of the blowing hole 3. Increase the stretching or inflation ratio 4. Check the rotating device 5. Improve the quality of the preform.
The upper part of the PET bottle is too thick？
Reason:
1. The temperature of the upper part is too low 2. The vent hole of the mold is too far from the upper part 3. The stretching ratio is too low 4. The inflation ratio of the upper part of the bottle is too low 5. The stretching rod speed is too slow
Elimination method:
1. Heating the upper part 2. Adjust the position of the exhaust hole 3. Increase the stretching ratio 4. Change the bottle shape 5. Adjust stretch rod speed.
The bottom of the PET preform is whitish？
Reason
1. Insufficient temperature of hot runner
2. Insufficient material temperature
Elimination method:
1. Strengthen heat insulation measures 2 . Increase the temperature of the nozzle here 3 . Properly increase the material temperature 4. Speed up the injection speed5. Reduce the holding pressure6. slow down cooling water flow.
Uneven PET preforms？
Reason:
1. Poor mold manufacturing
2. Gate hole deviation
3. Injection pressure too high
4. core shift
Elimination method:
1. Correction mold
2. Raise material temperature
3. turn down the pressure
4. Mold with high strength, high precision and adjustable core structure
PET preform gate with wire drawing？
Reason:
1. Poor insulation
2. Insufficient cooling
3. pressure in heat flow
4. Bad screw check
5. Holding pressure too low
Elimination method:
1. Guaranteed heat insulation at the gate
2. increase cooling
3. Reinforce the inverted cable
4. Clean the screw nozzle
5. increase pressure
Bending of PET preform after demoulding?
Reason:
1. Gate hole eccentric
2. uneven cooling
Elimination method:
1. Correct mold 2. Reduce the holding pressure
3. Increase injection speed 4. extended cooling
5. Clean up waterways 6. Increase cooling water pressure
Depression on the PET preform surface？
Reason:
1. Material temperature is too high
2. injection rate is too short
3. Dwell too short
4. Injection time is too short
5. Insufficient cooling
Elimination method:
1. Lower material temperature
2. Reduce the injection rate
3. increase pressure
4. increase injection time
5. increase water pressure
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Our Team
- Professional and responsible
The second generation boss of the factory, has been deeply involved in the PET packaging machinery industry for 16 years, focusing on innovation and quality improvement.
Overseas manager, focusing on overseas order management, meticulous and thoughtful, ensuring that customer needs are accurate.
Chief designer, professional bottle design expert, experienced, focusing on the perfect combination of practicality and beauty.
Installation engineer, has completed 120+ project installations, is serious and responsible, and ensures stable and efficient operation of the equipment.
The second generation boss of the factory, has been deeply involved in the PET packaging machinery industry for 16 years, focusing on innovation and quality improvement.
Overseas manager, focusing on overseas order management, meticulous and thoughtful, ensuring that customer needs are accurate.
Chief designer, professional bottle design expert, experienced, focusing on the perfect combination of practicality and beauty.
Chief designer, professional bottle design expert, experienced, focusing on the perfect combination of practicality and beauty.
Chief designer, professional bottle design expert, experienced, focusing on the perfect combination of practicality and beauty.
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