Latest News and Updates from Sunkey Packaging

The definitive specification guide for RTE food manufacturers — mapping product density, retort temperature, and format requirements to laminate structures, seal parameters, and compliance documentation. Read More

Baby food is the highest-scrutiny category in food packaging. Stricter migration limits, BPA bans, zero-tolerance aromatic amine requirements, and mandatory Process Authority validation apply before any retort-packaged infant product reaches the shelf. Read More

The definitive guide for pet food manufacturers — covering laminate structures, F₀ targets, seal requirements, and material selection for 121°C and 135°C retort processing. Read More

EU packaging regulations have come and gone before. But the Packaging and Packaging Waste Regulation (EU) 2025/40 — commonly called PPWR — is structurally different from its predecessor Directive 94/62/EC, and that difference matters enormously for retort pouch manufacturers selling into the European market. Read More

In a retort pouch laminate, the layers most people focus on are the barrier (EVOH, aluminum foil), the seal (CPP, RCPP), and the structural outer layer (PET). The adhesive bonds holding these layers together receives far less attention — even though it sits directly adjacent to the food-contact inner layer and can, under the wrong conditions, introduce carcinogenic contaminants into the food. Read More

Ethylene vinyl alcohol copolymer (EVOH) is the workhorse of flexible packaging barrier films. Walk into any supermarket and pick up a retort pouch, a squeezable ketchup bottle, or a vacuum-packed cheese — there is a high probability you are holding EVOH. It appears in the barrier layer of millions of packages produced every day because it delivers oxygen transmission rates (OTR) that no cost-competitive alternative polymer can match under ideal conditions. Read More

Process validation for retort pouches is not a bureaucratic formality. It is the scientific proof that your specific product, in your specific pouch structure, processed in your specific retort vessel, achieves commercial sterility every time. Without it, you have a hypothesis — not a safe product. Read More

Retort pouch quality failures are disproportionately costly compared to most other packaging formats. The reason is simple: retort pouches are used for shelf-stable food products, where a packaging failure does not merely mean a damaged package—it means a potential food safety incident. Read More

The shift from metal cans to retort pouches is the most significant packaging format transition in the food and pet food industries in the past two decades. The economics, consumer preferences, and supply chain advantages have all converged to make 2024–2026 the right window for manufacturers still operating legacy can lines to evaluate the switch. Read More

The most common mistake in packaging procurement is evaluating format options based on unit price alone. It is an understandable shortcut—unit price is visible on every invoice—but it consistently leads to higher total costs. Here is the reality: a retort pouch may cost $0.17–$0.19 per unit versus $0.13–$0.15 for an equivalent metal can. At face value, the can appears 15–30% cheaper. But this comparison ignores six to seven additional cost categories that the can format systematically loses in. Read More

Реторт-пакет настолько хорош, насколько хороша его ламинатная структура. Комбинация слоёв определяет не только то, выдержит ли упаковка процесс ретортирования, — она определяет срок хранения, качество продукта, удобство для потребителя и соответствие нормативным требованиям. Read More

When food manufacturers evaluate packaging options, the instinct is often to compare the per-unit cost of retort pouches against metal cans. This is the wrong starting point. A retort pouch may cost 15-30% more per unit than an equivalent metal can. But once you account for the full supply chain—from empty packaging logistics through to retail shelf—the picture changes dramatically. Read More

The food packaging industry is experiencing a fundamental shift. According to Grand View Research, the global retort pouch market is growing at 7.0% CAGR (2024-2033), significantly outpacing the overall food packaging market growth of 4.1%. This reflects deliberate decisions by food manufacturers reassessing their packaging strategies. Read More

A retort pouch is a flexible packaging container constructed from multiple laminated layers of plastic and metal foil, engineered to survive high-temperature thermal sterilization—a process called "retorting." Unlike conventional flexible packaging that would fail under heat, retort pouches maintain structural integrity, seal strength, and barrier properties at temperatures between 121°C and 135°C (250°F–275°F). Read More

Ordering custom flat bottom bags may seem complex, especially if you're doing it for the first time. However, breaking it down into clear steps makes the process manageable and ensures you get exactly what you need. Read More

MOQ (Minimum Order Quantity) is the smallest number of units a manufacturer will produce in a single order. For custom flat bottom bags, MOQ typically ranges from 5,000 to 50,000 pieces, depending on your specifications. Understanding MOQ is essential for budgeting and inventory planning. Unlike retail products where you can order single units, manufacturing custom packaging involves significant setup costs that must be spread across a minimum number of units to remain economically viable. Read More