2025 Od surovin až po hotové výrobky: Odhalení 360° procesu kontroly kvality továrny na sáčky na chleba

Když seberete čerstvě upečený bochník, pytel na chleba je jeho první “ochránce”—and behind this simple packaging lies a strict quality journey that starts with Ze surovin to finished products. 360° systém kvality naší továrny, built around the principle of Ze surovin to end, zajišťuje, že každá taška je v bezpečí, odolný, and up to global standards. Let’s break down the key steps of this Ze surovin-to-finished process!

🌱 1. Raw Material Selection: The Core of “From Raw Materials to Finished” Quality​

Raw materials are the starting line of our Ze surovin-driven quality control—we focus on two main options: food-grade PE a kraft paper, both screened to meet the highest safety benchmarks.​

For Food-Grade PE (Polyethylen):

✅ Only source from suppliers with FDA & SGS certifications—this is the first checkpoint in our Ze surovin proces (global food safety standards non-negotiable).

✅ 3-step inspection before factory entry (a must for Ze surovin kvalitní):

1. Check certification docs to confirm compliance with food contact material rules (no shortcuts in Ze surovin screening).

2. Laboratory sensory test: No strange smells, discoloration, or impurities (even a tiny black spot = rejection—we don’t compromise on Ze surovin kvalitní).

3. Migration test: Soak PE film in simulated food solution (NAPŘ., acetic acid for acidic foods) at 40°C for 24h—test for heavy metals/plasticizers (critical for Ze surovin bezpečnost).

✅ Must meet China’s GB 4806.7-2016 standard (food contact plastics) to move from Ze surovin stage to production.​

For Kraft Paper (Premium Bread Packaging):

🌿 Prioritize 100% recycled fibers with FSC certification—eco-friendliness is part of our Ze surovin criteria (no toxic additives allowed).

✅ Random sampling tests (key for Ze surovin consistency):

1. Basis weight: Minimum 80g/m² (prevents tearing when holding bread—durability starts at Ze surovin).

2. Moisture content: 8%-12% (too wet = mold; too dry = brittleness—we control this at Ze surovin stage).

3. Grease resistance test: Apply edible oil, observe 24h—no seepage allowed (seepage ruins bread texture, so we eliminate this risk at Ze surovin).
   

🎨 2. Printing Ink Testing: Trezor & Beautiful—A Link Between From Raw Materials and Finished​

After passing Ze surovin checks, the next step is printing—and ink safety is as critical as raw material quality. We follow a “zero-toxic ink” rule to keep the Ze surovin-to-finished chain safe.​

✅ Only use water-based ink (no VOCs = non-toxic, bez zápachu, no harmful residue; unlike solvent-based inks—this choice aligns with our Ze surovin safety standards).

✅ Pre-use third-party lab tests: Heavy metals (lead, mercury, cadmium) and benzene compounds must be “undetectable”—we treat ink like a raw material in our Ze surovin mindset.​

✅ Real-time printing inspections (every 30 zápis):

1. Ink adhesion test: Wrap sample around 500g weight, rub 20x on white paper—no ink transfer (adjust pressure/temp if needed; this ensures the print lasts from Ze surovin to customer use).

2. Printing accuracy: Use calipers to check logo-edge distance—tolerance ±0.5mm (avoids misprints hurting brand image; precision matters as much as Ze surovin kvalitní).

✅ “Safe distance” rule: Printed area ≥1cm from the bag’s inner surface (for direct bread contact—extends the Ze surovin safety promise to the final design).

✅ Extra protection for transparent PE bags: Add a food-grade film between ink and bread (prevents ink migration—another layer of safety in the Ze surovin-to-finished process).

💪 3. Pressure Resistance Testing: Durable for Real Life—Protecting the From Raw Materials Investment​

The durability of a bread bag depends not just on Ze surovin kvalitní, but also on how well it holds up in real use. We simulate real scenarios to ensure the Ze surovin effort doesn’t go to waste.​

✅ Use a computer-controlled pressure tester:

1. Pick 50 random samples per batch (from different production line parts for fairness—we test the consistency of the Ze surovin-to-production process).

2. Seal bag openings (simulate full bread), apply gradual pressure:

• Regular bags (500g-1kg bread): Withstand 200N (≈20kg weight) for 60s—no breaking/leaking (durability that honors Ze surovin standardy).

• Large bags (2kg+ bread): Withstand 300N (higher strength for heavier loads—built on reliable Ze surovin).

✅ Dynamic durability test (simulate delivery):

1. Fill bags with sandbags (same shape/weight as bread—mimics real use of the Ze surovin-made bag).

2. Put in vibration tester (5Hz frequency, 10mm amplitude) for 2h (mimics truck bumps—tests if the bag stays intact after Ze surovin a výroba).

3. Check seams for damage/deformation—1 failed sample = batch on hold (fix material/sealing, retest until pass—we don’t let poor production undo Ze surovin kvalitní).

🔍 4. Beyond Key Links: Full-Lifecycle Quality—Completing the From Raw Materials to Finished Journey​

Our 360° process doesn’t stop at core steps—we check until the final bag to ensure the Ze surovin-to-finished journey ends with excellence.​

✅ Finished product visual inspection:

• Use light tables to spot 0.1mm pinholes (tiny holes = freshness loss—we catch this before the Ze surovin-made bag reaches customers).

• Check for uneven sealing or dirty marks (no flaws allowed in the final product of our Ze surovin proces).

✅ Freshness retention test:

• Put a bread slice in the bag, pečeť, store at 25°C for 3 days.​

• Ensure bread stays soft + no mold (tests airtightness/moisture control—proves the Ze surovin and production work together to keep bread fresh).
  

❤️ Why This Matters: From Raw Materials to Trust​

Quality control isn’t just procedures—it’s a mindset centered on Ze surovin to finished excellence. Every bread bag connects bakeries to customers, so its safety and durability (rooted in Ze surovin kvalitní) directly affect your brand reputation.​

If you’re a bakery owner/buyer, visit our factory! See our Ze surovin sklady, lab tests, and production checks firsthand—partner with a factory that builds quality from Ze surovin to the very last bag.