“We had to tame color drift across four vendors and free up our die-cutting line,” recalls Lin, Operations Director at Seito Snacks. “Our seasonal launches were missing windows because we spent weekends chasing pantones. That’s when we started evaluating a digital path for cartons.”
Early prototypes were ordered through gotprint to sanity-check dielines and artwork under tight timelines. “That small decision—test fast with short on-demand runs—shrunk our risk,” says Mei, the company’s color engineer. “It also gave us hard data to benchmark against our offset baseline.”
What follows is a straight conversation with the Seito team: their constraints, a few missteps, and the specific process controls that moved their folding carton SKUs from offset-only to a mixed model with digital printing for short runs and seasonal packs.
Company Overview and History
Seito Snacks is a mid-sized Food & Beverage brand headquartered in Singapore, operating across Southeast Asia with co-packers in Vietnam and Malaysia. The company runs roughly 120 active SKUs, half of which are seasonal or limited releases tied to festivals and online promotions. Folding Carton is their primary PackType, with a mix of FSC-certified SBS and CCNB boards for different price tiers.
The production environment is hybrid: long-run hero SKUs stay on Offset Printing with aqueous varnish, while short-run and personalized promotions increasingly move to Digital Printing with UV-LED Ink systems. Prepress is centralized; converting (die-cutting, folding, gluing) is split between an in-house line and two regional partners.
“We’re not chasing novelty,” Lin notes. “We want predictable color (ΔE 2000 within 2–3 for key brand swatches), clean registration, and fast changeovers for small orders—usually 1,500–8,000 packs.” Those numbers used to be a headache on offset due to plate changes and wash-ups for frequent SKUs.
Quality and Consistency Issues
Before the shift, Seito saw color deviations in the ΔE 4–6 range for reds and deep blues across suppliers. Seasonal SKUs printed on CCNB from different mills rarely matched under D50 light. Shelf complaints were rare but real. Their First Pass Yield (FPY%) hovered in the low 80s when they opened new seasonal lots, mostly due to color corrections and minor cracking near creases.
The team also struggled with changeover time: 45–60 minutes per SKU on offset, multiplied by short windows around festive launches. Waste rates ran 6–8% during the first two lots of a season because operators dialed in color and compensation curves on the fly. None of that is a crisis in isolation, but the cumulative drag led to missed slots at co-packers.
“Finance asked us to cap trial spend,” Lin says. For small pilot buys and logistics, their team once used a visa spark business miles card to track expenses tightly and recover points for frequent inter-facility travel. “We kept pilots lean and accountable, but we needed a production-grade fix, not just a budgeting trick.”
Technology Selection Rationale
Seito narrowed options to Digital Printing with UV-LED Ink on carton-grade boards versus a faster changeover offset cell with pre-inked cartridges. Digital won for short-run agility and variable data. “We evaluated two digital presses—one aqueous inkjet, one UV-LED,” Mei explains. “For food secondary packaging, we set a low-migration ink requirement and tested odor at elevated temperature. UV-LED with low-migration formulations passed our brand panel and met internal sensory checks.”
The brand partnered with gotprint to prototype dielines, validate coatings (Spot UV and Soft-Touch Coating), and adjust barcode placement for downstream scanning. “We even used a promo code for gotprint on two pilot orders to keep the procurement threshold comfortable,” Lin says. “Those weren’t production lots, but the proofs de-risked our choices.”
Color control locked in through G7 calibration and ISO 12647 aim points. They tagged critical brand colors with tolerances (ΔE 2000 ≤ 3.0 for primaries, ≤ 4.0 for secondaries) and standardized viewing with D50 booths across sites. “Once we knew the digital device could stay within those fences, the rest became a workflow and finishing conversation,” Mei adds.
Commissioning and Testing
During commissioning, Seito ran paired tests on SBS and CCNB. SBS passed easily; CCNB showed slight mottle in heavy coverage areas. “We solved it by tweaking total ink coverage and adding a light underlayer for blues,” Mei says. Initial runs achieved ΔE 2–3 on primaries and 3–4 on secondaries. Registration held within ±0.1 mm on test forms; creasing performance improved after they adjusted rule/board pairs and changed folding sequence on two SKUs.
“We had one ugly surprise,” Lin admits. “A Soft-Touch Coating layer interfered with window patching on a gift pack sleeve. We reformulated the coating and moved the patch to a flat before crease. That cost us three days, but it was a solid lesson.” To trace pilot prints versus production samples, the team used a job tag system and, for the prototype orders, they referenced a gotprint code in their internal tracker to flag items sourced outside the standard PO flow.
On the commercial side, procurement kept vendor billing clean. “Travel and incidental costs might go to a capital one credit card small business account,” Lin notes, “but production POs run through ERP-approved channels only.” That separation prevented confusion when reconciling pilot expenses versus full-scale production costs.
Quantitative Results and Metrics
Across the first two seasonal cycles, FPY% for short-run digital cartons moved from roughly 82–84% to 92–94%. Start-up waste on new seasonal lots went from 6–8% to around 3–4%, largely because color and registration stabilized earlier in the run. Changeover time for these SKUs dropped from 45–60 minutes (offset) to 15–20 minutes (digital job setup and finishing prep).
Throughput for seasonal windows rose about 18–22% when measured as completed cartons per 8-hour shift, because the schedule absorbed more SKUs without stacking make-readies. Energy use per pack (kWh/pack) on digital versus offset varied by job, but Seito saw a 10–12% decrease on small lots that previously required offset warm-up and plate cycles. Carbon per pack (CO₂/pack) followed the same pattern; the company is documenting this in a longer LCA study.
On the commercial side, the payback period for the digital cell (press plus inline varnish, no inline die) is modeled at 14–18 months under current seasonal volume and SKU mix. “It’s not a universal number,” Lin cautions. “If seasonal demand dips or average lot size doubles, the payback shifts. Long-run hero SKUs remain on offset for good reason.”
Lessons Learned
“Digital isn’t magic,” Mei says. “It’s color baselining, substrate discipline, and finishing fit.” Not every substrate behaved: CCNB from one supplier needed a surface treatment change; Soft-Touch chemistry had to be tuned for downstream patching. They retained Offset Printing for SKUs above 20–30k per lot and for certain metallic effects that remain more economical with Foil Stamping on offset sheets.
“We also cleared up a policy question early,” Lin adds. “Someone asked, can i use a business credit card for personal expenses? The answer is no—ever. We documented purchasing rules, including how prototype orders via partners like gotprint are tracked and approved. It sounds small, but clean governance avoids surprises.” The team plans to extend variable data on digital—QR via ISO/IEC 18004—for limited promos, while holding tight to ΔE targets and FSC sourcing.
Looking ahead, Seito will keep using gotprint for quick-turn prototypes that prove dielines and coatings before they commit to larger runs at regional converters. “It’s a pressure valve for the schedule,” Mei concludes. The combination—short-run digital cartons, calibrated color, and disciplined finishing—gave the seasonal calendar room to breathe without overpromising what the process can or should do.
