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BEVERAGE FORMAT
38 mm PET Preforms
Reference range: 25–62 g for approximately 350 ml–1.8 L bottle applications.
PET PREFORMS · SUPPLY MADE CLEAR
The right preform is where a better bottle begins.
K1 PREFORM helps beverage producers, bottle manufacturers and packaging distributors source PET preforms with the neck finish, weight and bottle application in view.
5core format families
13–350greference weight range
0.35–19Lreference bottle range
01 PET PREFORM
Precisely formed
neck finish
neck finish
Engineered for
stretch blow molding
stretch blow molding
Built for practical B2B sourcing
Beverage ProducersBottle ManufacturersPackaging Distributors
PRODUCT RANGE
Start with the neck.
Build around the bottle.
Our reference range covers compact beverage bottles through large-format water containers. Share your bottle volume, neck finish and target weight—we will help narrow the options.
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LIGHTWEIGHT BEVERAGE RANGE
Discuss this format ↗
30/25 PET Preforms
A versatile family for water and still-beverage bottle projects, available across a broad selection of preform weights.
Reference weight13–38 g
Reference bottle size350 ml–2 L
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LARGE FORMAT
45 mm PET Preforms
Reference range: 85–180 g for approximately 4–10 L bottles, including single-start and three-start formats.
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LARGE WATER CONTAINERS
55 mm High-Neck
Reference range: 190–320 g for approximately 10–17 L bottle applications.
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BROAD LARGE-FORMAT RANGE
55 mm Short-Neck
Reference range: 100–350 g for approximately 5–19 L bottle applications.
Reference ranges are for initial selection only. Final weight, neck dimensions, resin choice and application suitability require technical confirmation.
FROM PREFORM TO BOTTLE
One formed neck.
A new bottle body.
During stretch blow molding, the preform body is reheated and expanded inside a bottle mold. The already-formed neck finish remains the critical connection point for the closure.
01
PET Preform
Neck finish and material distribution are established.
HEATSTRETCH + BLOW
02
Finished Bottle
The heated body takes the shape of the selected bottle mold.
The neck finish remains formed
That is why closure compatibility and neck dimensions should be confirmed at the start.
BETTER FIRST CONVERSATIONS
Four details move a project forward.
You do not need a complete technical drawing to contact us. Start with what you know, and we can identify what needs to be confirmed next.
Send Your Requirement →- 01
Bottle volume
The intended fill volume or finished bottle capacity.
- 02
Neck finish
A drawing, sample, cap specification or clear dimensions.
- 03
Target weight
Your current preform weight or a performance target.
- 04
Application
Product category, bottle shape and production requirements.
MANAGED MANUFACTURINGProduction visibility matters.
HOW WE WORK
Partnership-backed production. Closely managed execution.
We work through established manufacturing partnerships and stay closely involved in product selection, requirement alignment and order follow-through.
01
Requirement review
We align the neck finish, weight and target bottle before confirmation.
02
Production coordination
We communicate requirements with the manufacturing team and follow key order details.
03
Commercial response
One clear contact for product questions, quotation and shipment coordination.
Quality system update: ISO certification application is currently in progress.
ABOUT K1 PREFORM
A focused PET preform partner for practical packaging projects.
K1 PREFORM is the international-facing brand of Qingdao Kunyuda New Materials Technology Co., Ltd. We focus on helping B2B buyers navigate PET preform options and move from an initial requirement toward a confirmed supply solution.
Our role is built around product understanding, responsive communication and controlled manufacturing partnerships—not adding complexity between you and production.
Clear communication
Practical product matching
Long-term B2B support
START A CONVERSATION
Tell us about the bottle you want to make.
Share a preform photo, neck drawing, target weight or bottle sample. Even partial information is enough to begin.