Clear PET Square Hinged Bakery Clamshell Box | 150×150×78mm | Ventilated Grid Base | GHW-350C

QUNLU presents the Clear PET Square Hinged Bakery Clamshell Box | 150×150×78mm | Ventilated Grid Base | GHW-350C, a thoughtfully engineered solution for modern pastry shops, bakeries, cafés, and artisan food producers seeking premium presentation and practical performance. This product description details the features, applications and technical advantages of the GHW-350C, emphasizing its role as a clear PET clamshell that elevates display and preserves freshness while addressing current food packaging trends

Product Overview

The QUNLU GHW-350C is a clear PET clamshell designed in a compact square hinged container format measuring 150×150×78mm. This ventilated bakery box uses a purpose-built ventilated grid base to support delicate baked goods and promote airflow, reducing condensation while maintaining product visibility

Key Features

- Clear PET construction: The GHW-350C is molded from high-clarity PET, providing an attractive glossy finish that enhances visual merchandising. As a clear PET clamshell, it offers product visibility while maintaining a durable barrier.

- Square hinged container design: The square hinged format is user-friendly, stackable, and space-efficient. The integrated hinge provides reliable closure and convenient opening for retail transactions.

- Ventilated grid base: The ventilated bakery box base features a precision grid pattern engineered to allow controlled airflow beneath items, minimizing trapped moisture and extending the freshness of baked goods.

- Optimal dimensions: At 150×150×78mm, the container balances compact footprint and internal volume, fitting single-serve pastries or small desserts while remaining suitable for multi-item arrangements in take-away service

Applications and Use Cases

Retail display: This clear PET clamshell is ideal for bakery display cases and iced goods counters where visual appeal directly influences sales.

Take-away and delivery: The ventilated bakery box is suitable for short-distance food delivery and takeaway, addressing concerns about condensation that can compromise texture during transport.

Catering and events: For catered events, the GHW-350C offers a professional single-serve presentation. Its clear PET clamshell appearance supports premium branding while enabling guests to identify items at a glance.

Food markets and pop-ups: Vendors at farmers’ markets and pop-up events benefit from a square hinged container that is lightweight for transport, yet robust enough for repeated use during busy service periods

Technical Advantages

- Barrier properties: While PET is not a full gas barrier like some specialty polymers, it provides effective protection against airborne contaminants and moisture ingress that would otherwise diminish product quality.

- Structural integrity: The square hinged container design includes reinforced edges and a secure snap-close mechanism that prevents accidental openings without adding complexity to the user experience.

- Sustainability considerations: PET is widely accepted in recycling streams compared to some other packaging polymers. Selecting a clear PET clamshell aligns with many foodservice operators’ objectives to incorporate easily recyclable materials while delivering high-performance food packaging solutions

Summary

The QUNLU Clear PET Square Hinged Bakery Clamshell Box (GHW-350C) is a practical yet refined solution for modern bakers and food retailers. Combining a clear PET clamshell construction, a space-efficient square hinged container design, and an innovative ventilated grid base, this ventilated bakery box addresses both presentation and preservation needs.

① Square 150×150mm Format — Efficient Counter Footprint

The square geometry packs tightly on bakery display counters and in delivery bags — four units fit in the same linear space as three rectangular equivalents. For snack plaza operators and bakery takeaway counters, this means more products displayed per linear meter.

② Ventilated Grid-Texture Base — Crust Integrity Preserved

The bottom surface features a molded grid of small raised squares that creates micro-channels for air circulation beneath the baked product. Condensation from warm baked goods cannot pool against the base — keeping floss buns, cookies, and pastry crusts dry and textured throughout display.

③ Lightweight at 19.5g — Half the Weight of Format Equivalent

The optimized PET wall thickness delivers full structural rigidity for a 150×150mm footprint at 19.5g per unit — half the weight of comparable bakery clamshells in the QunLu range. Lower weight means lower per-unit material cost and reduced freight cost per container load.

④ Flat Lid with Recessed Center — Compact Stacking

The flat lid profile with a central recess keeps the closed height at 78mm — compact enough for bakery display shelf spacing but tall enough to clear standard baked product heights. The recessed center adds lid surface rigidity without requiring a thicker gauge, contributing to the overall weight reduction.

⑤ One-Piece Hinged Construction — No Loose Lids

Base and lid are thermoformed as a single connected unit with dual front snap-locks. Staff close with one pressing motion on each lock — no alignment required. At a busy bakery counter or snack plaza, this one-motion close eliminates the fumbling and mis-alignments of separate lid systems.

Square Format — Layout Freedom

The 150×150mm open cavity imposes no portion grid on the operator. Four standard-sized round buns or pastries fit naturally in a 2×2 arrangement; cookies and brownies can be placed in any configuration that suits the specific product mix. This is the opposite of compartmentalized bakery packaging — the box does not dictate how many or what type of items go inside. For bakery operators whose daily product mix varies, an open cavity means one box SKU serves multiple menu item combinations.

Ventilation Grid — Functional Base Texture

The raised-square grid molded into the base floor is not decorative. It lifts baked products fractionally above the base surface, creating air channels that allow ambient circulation and prevent condensation pooling. For floss buns, crispy cookies, and pastries where crust texture is part of the product value, this ventilation is the difference between a product that arrives at the display counter with its original texture and one that arrives softened from trapped moisture.

Flat Lid with Recessed Center — Structural Efficiency

The lid's central recess functions as a structural stiffener — it adds rigidity to the flat PET sheet without increasing material gauge. This is the engineering choice that enables the GHW-350C to weigh 19.5g while maintaining lid rigidity across a 150×150mm span. A fully flat lid of the same gauge would flex under handling pressure; a thicker lid would add weight and material cost. The recess solves both constraints simultaneously.

Hinged Construction & Front Snap-Locks

The one-piece thermoformed hinge along the rear edge aligns the lid to the base with zero assembly or alignment step. Dual snap-locks on the front edge engage with light finger pressure — designed for repetitive, high-frequency closing at bakery counter speed. The locks release with a simultaneous press from both sides, intuitive for end customers without printed instructions.

Material: Food-grade PET, BPA-Free, PFAS-Free. #1 PET recyclable. FDA 21 CFR compliant.

Square Format Tooling — More Complex Than Rectangular

Square thermoformed containers present a different tooling challenge than rectangular ones: the equal-width draw in both directions requires balanced material distribution across the forming cycle to avoid corner thinning. QunLu's KIEFEL and ASANO thermoforming lines are equipped for precision square-cavity forming, producing the GHW-350C with consistent wall thickness across all four corners — the failure point where most square containers develop structural weakness.

The base ventilation grid is not a post-form modification — it is formed into the base during the same thermoforming cycle as the cavity and hinge, maintaining single-cycle production efficiency. At 19.5g per unit and 600 pcs per carton, the GHW-350C delivers a cost-efficient material-to-cavity ratio that scales effectively at container-load volume.

600 pcs per carton, 61×56×45 cm, 0.154 m³ CBM, 100 pcs × 6 sleeves. Ships from Pinghu, Jiaxing, Zhejiang via Shanghai or Ningbo port. Full documentation: FDA, ISO 22000, BRC, GRS.