Custom Flat Ziplock Bags for Pre Rolls or Vape Packaging – B4

Designed for Herb and vape products that demand long‑term freshness and regulatory compliance. Utilizing a multi‑layer composite structure: the inner layer​ is FDA food‑grade polyethylene (PE), ensuring a safe, puncture‑ and tear‑resistant seal with good temperature tolerance; the middle barrier layer​ can be either high‑barrier metallized film (VM‑PET) for oxygen, light, and odor blockage, or complete light‑blocking aluminum foil (AL) that also provides UV and bacteria resistance; the outer layer​ is tough BOPP film, offering water‑ and oil‑resistance, low‑temperature tolerance, and overall durability.

Through precise material formulation, a high‑performance barrier is achieved, with an oxygen transmission rate (OTR) of ≤ 0.5 cc/m²·24h and a moisture vapor transmission rate (MVTR) of ≤ 15 g/m²·24h. This effectively inhibits product oxidation and moisture absorption, extends shelf life by 2–3 times, and provides professional protection for light‑sensitive components such as terpenes. The synergistic action of the multi‑layer composite materials ensures product stability, safety, and compliance throughout storage and distribution.

Our pouches use a PE / VMPET (or AL) / BOPP composite designed for professional Herb packaging:Inner PE layer: FDA 21 CFR 177.1520 compliant, ensuring clean, food-safe contact; Middle barrier layer:VMPET for lightweight, cost-efficient high barrier,Aluminum foil for 100% light blocking and elite oxygen / moisture resistance. Outer BOPP layer: enhances tear strength and puncture resistance. This structure achieves:OTR ≤ 0.5 cc/m²·24h and WVTR ≤ 15 g/m²·24h. Delivering excellent protection for Herb products, terpenes, vape oils, botanicals, and other oxidation-sensitive contents.

Triple-seal bottom design tested to provide 5× industry-standard leak resistance, ideal even for viscous vape oils. Tear notch opening force maintained at 8–12 N, easy for adults but leaves a clear tamper-evidence trace. Zipper integrity >95% after 800 cycles, ensuring reliable reseal for daily consumer use.

Every pouch follows strict dimensional controls:±0.5 mm tolerance for the 2.25″ × 6.25″ structure , Consistent 5.1 Mil (0.13 mm) thickness , Smooth outer BOPP enhances friction performance on automated loading lines. This guarantees perfect shelf presentation and seamless compatibility with high-speed automated filling, weighing, and sealing lines.

E-Liquid & Vape Manufacturers

The aluminum foil material provides complete light-blocking protection (UV blocking rate >99%). This means it can effectively prevent the photodegradation of flavor compounds like terpenes in e-liquids and avoid nicotine oxidation, ensuring consistent taste and stable composition of the product throughout its shelf life.

Premium Pre-Roll & Hemp Product Brands

With an oxygen transmission rate (OTR) of≤ 0.5 cc/m²·24h and a water vapor transmission rate (WVTR) of ≤ 15 g/m²·24h, this high-barrier performance can reduce the oxidation rate of contents to less than 1/5 of that in standard polyethylene bags. This directly slows cannabinoid degradation and prevents dried flower from moisture absorption and mold, safeguarding product potency and safety.

High-Value Herbal Teas & Powdered Supplements

The three-layer composite structure of PE/foil (or VMPET)/BOPP provides robust protection. The outer BOPP layer offers tensile strength (≥40 MPa), while the inner PE layer ensures a strong heat seal. This means the packaging is puncture-resistant and leak-proof during logistics, effectively locking in the product’s volatile aromas and blocking external odors from entering.

“Our Phoenix Dancong tea is extremely sensitive to light and oxygen. With conventional packaging, the tea’s flavor degraded rapidly. After switching to your aluminum foil packaging (BOPP/AL/PE structure), accelerated testing over six months showed that the retention rate of key flavor compounds, such as terpene alcohols, exceeded 98%. This allows us to confidently label a 12-month shelf life, and the consistent quality has helped increase repeat orders from distributors by 30%.”

“Brand visuals are our lifeline. We needed small-batch packaging that could perfectly fit a 0.5-inch diameter vape pen while achieving a sleek metallic finish. Your 2.5″x6.5″ size and metallic gloss printing met our needs exactly. Features like the rounded corners and V-notch tear opening enhanced the unboxing experience and helped us secure placement with a key convenience store chain at a major trade show—resulting in an initial order of 50,000 units.”

“Product stability and dosing safety are critical. We chose your packaging for its child-resistant zipper and extremely low moisture vapor transmission rate of ≤ 15 g/m²·day. Testing confirmed that the humidity indicator card inside remained within the safe range (<55% RH) under specified storage conditions, ensuring accurate dosing consistency for our products.”