Strawberry Punnet Manufacturer
StlPak manufactures clear PET and rPET strawberry punnets designed to protect delicate fruit during transport, handling, and refrigerated retail display. Our punnets are available in multiple sizes, with ventilated lids and bases to maintain airflow and extend freshness.
Strawberries are one of the most fragile fruits in fresh retail. Unlike firmer fruits, strawberries bruise easily under their own weight when stacked, lose their shape in containers that are too deep, and develop condensation and mold quickly without adequate ventilation. A well-designed strawberry punnet addresses all three: structural rigidity to prevent crushing during stacking and transport, a shallow-to-medium depth profile that avoids compression bruising, and strategically placed ventilation that allows ethylene gas and moisture to escape while keeping the fruit cool.
Our range includes hinged and separate-lid formats in clear PET and rPET, all manufactured with food-grade materials suitable for direct food contact. The transparent body shows the fruit clearly on shelf — an important factor for retail strawberry sales where color, size uniformity and visible freshness drive purchase decisions — while the solid rim and anti-slide stacking lugs keep punnets stable during transport and display.
For growers, packhouses and exporters, we also support custom sizes, custom label areas and branded printing. Where an existing mold cannot meet the required dimensions, vent pattern or lid style, StlPak can develop a custom mold based on your packing needs.
Whether you need a practical stock punnet for supermarket strawberry portions or a fully customized container for export-grade fruit, we help you select a solution that fits your growing, packing and shipping conditions — not just the dimension table.
StlPak strawberry punnets are designed for fresh berry retail and export. Each model combines ventilated protection with clear presentation.
STL-CM340 Strawberry Punnet
Clear PET hinged-lid punnet designed for medium to large strawberries. Side and lid vents maintain optimal airflow to reduce condensation. Rigid body protects berries from crushing during transport and retail display.
STL-375H Stackable Strawberry Punnet
Stackable design with integrated ventilation slots. Suitable for strawberries and other soft berries. Strong snap-on lid stays secure through cold chain distribution.
STL-400F Large-Capacity Strawberry Punnet
Deep-base punnet with generous capacity for bulk strawberry packs. Heavy-duty PET construction withstands stacking without deforming. Wide top opening for easy filling and attractive retail presentation.
Strawberry Punnet Specifications
Optimized Ventilation Keeps Strawberries Fresh Longer
Strawberries respire actively after harvest, releasing ethylene gas and moisture that — without proper airflow — build up inside a sealed container, causing condensation, mold growth, and rapid softening. A punnet that traps moisture can turn perfectly packed berries into an unsellable product within hours of refrigerated display.
StlPak strawberry punnets are designed with strategically placed side and lid vents. These allow continuous air exchange while keeping the berries fully protected. The vent pattern is sized and positioned to maintain airflow without weakening the container structure — a critical balance that generic containers often miss.
For cold chain operations, proper ventilation also means faster and more uniform cooling. Cold air reaches the berries through the vents instead of being blocked by container walls, helping maintain consistent temperature from packhouse to retail shelf.
Rigid Container Design That Prevents Crushing Damage
Strawberries are structurally fragile — their thin skin, high water content, and soft flesh make them one of the most damage-prone fruits in fresh produce supply chains. A punnet that flexes under stacking weight transfers pressure directly to the fruit, causing compression bruising, juice leakage, and rapid deterioration.
StlPak punnets use rigid PET material with reinforced rim structures that resist bending under load. The anti-slide stacking lugs keep punnets firmly in position within the case, preventing the shifting that causes abrasion and impact damage during transport. Each punnet is designed to carry the weight of full cases stacked above it — not just hold the berries inside.
For automated packing lines, the consistent dimensional accuracy and reliable denesting of StlPak punnets mean fewer line stoppages and less manual handling — both of which reduce the risk of fruit damage before the product even leaves the packhouse.
Stock Molds and Custom Strawberry Punnet Options
A strawberry punnet project does not always require a new mold. In many cases, an existing container size from our stock mold library works well for standard retail portions. StlPak offers stock molds in multiple sizes and depths suitable for strawberries and similar soft berries.
When existing molds cannot meet the required dimensions, depth, vent pattern, material weight, or lid style, StlPak can develop a custom mold based on your specific packing requirements. We review the berry size profile, target portion weight, case pack configuration, and automation requirements before recommending whether a stock or custom solution is appropriate.
Custom mold projects typically involve a tooling investment with per-unit pricing that improves at volume — our team provides transparent cost breakdowns so you can evaluate the ROI before committing to tooling.
Sample Support Before Bulk Orders
Choosing a strawberry punnet only from catalog dimensions is not enough. The sample should be tested with your actual product — filling, weighing, lidding, stacking, and shipping — to confirm it performs under your real packing and logistics conditions.
To recommend suitable samples, StlPak reviews the berry variety, typical size range, target portion weight, required shelf life, cold chain conditions, and whether automation is used. This helps customers avoid selecting punnets that are too shallow, too flexible, or unnecessarily large for their specific operation.
We provide stock samples for evaluation and can also produce pre-production samples for custom mold projects. Samples help confirm dimensions, vent performance, stacking stability, and lid fit before bulk production begins.
PET Strawberry Packaging for Fresh Produce Supply Chains
Strawberry packaging works as a system: ventilated punnets, stackable bases, corrugated cartons and temperature-controlled transport. StlPak supports fresh produce supply chains with PET and rPET punnets sized for standard strawberry packs, labels applied in-house and production planned around the strawberry season.
See related fruit packaging formats or the full fresh produce packaging range.
How to Choose the Right Strawberry Punnet
Strawberry punnets for refrigerated retail display must balance protection, presentation and practicality.
Choosing a strawberry punnet is not only about checking the outside dimensions in a specification table. Buyers should consider the berry size and shape, the target portion weight, whether the pack will be top-sealed or lidded, the stacking height in distribution, and the display environment (open refrigerated case vs. closed chiller).
Shallow punnets work well for single-layer presentation and smaller portions. Medium-depth punnets with proper ventilation can hold 2-3 berry layers without compression damage. Deep containers without adequate structural support risk crushing the lower berries.
Buyers should also confirm whether the container will be closed manually or through automated equipment. Lid fit, denesting reliability, and consistent dimensions become critical on automated packing lines.
StlPak helps buyers compare existing PET and rPET strawberry punnet models based on real packing use, not only catalog dimensions. We can also support custom mold development when your specific requirements go beyond what stock molds can offer.
Strawberries respire after harvest, releasing ethylene gas and moisture. Without adequate ventilation, condensation builds up inside the punnet — accelerating mold growth and softening the fruit. Well-designed strawberry punnets include side and lid vents that allow continuous air circulation while keeping the fruit fully protected. StlPak strawberry punnets feature strategically placed vents that balance breathability with structural strength.
The ideal punnet depth depends on your portion size and berry dimensions, but strawberries should generally not be stacked more than 2-3 layers deep. Deeper containers risk compression bruising where the weight of upper berries damages those below. StlPak offers strawberry punnets in depths from 40mm to 80mm, and can recommend the right depth based on your target weight, berry size profile, and packing method.
Three design features work together: rigid PET material that resists flexing under case weight, anti-slide stacking lugs that prevent punnets from shifting during transit, and optimized depth that avoids excessive fruit-on-fruit pressure. The secure snap-on lid provides reliable closure without crushing berries at the rim.
Yes. All StlPak strawberry punnets are manufactured from food-grade PET and rPET materials that meet FDA and EU food contact standards. Our production facility maintains strict quality control protocols for food safety compliance throughout the manufacturing process.
Yes. Where existing mold dimensions do not match your requirements, StlPak can develop a custom mold based on your target capacity, berry size profile, vent pattern preferences, and case pack configuration. Custom tooling typically takes 25-35 days. Contact us with your specifications for a project assessment and cost breakdown.
Yes. StlPak punnets are manufactured with consistent dimensional accuracy and reliable denesting performance, making them suitable for automated filling, weighing, labeling, and case packing lines. We can provide samples for line testing before bulk orders to confirm compatibility with your specific equipment.
Yes. StlPak provides stock samples for evaluation so you can test punnet dimensions, vent performance, lid fit, stacking stability, and compatibility with your packing process. For custom mold projects, we also produce pre-production samples for approval before full production runs begin.
Different models can usually be combined in one container shipment, provided each model meets the applicable minimum order quantity. This flexibility helps customers who need multiple sizes for different portion tiers or berry types. Contact us to discuss your specific mixed-model requirements.