Reclosable poly bags with integrated write-on blocks for fast labeling and secure sample storage. These 12" x 15" reclosable bags feature a prominent white write-on area that accepts both pen and permanent marker, making them ideal for laboratories, medical facilities, evidence handling, and inventory management. The 4 mil Low Density Polyethylene (LDPE) construction provides puncture resistance and flexibility, while the side-welded zipper closure creates a reliable seal that opens and closes smoothly in a single motion. Made from 100% virgin LDPE resin that meets FDA and USDA food-contact specifications, these bags are safe for storing medical supplies, laboratory specimens, food samples, and other regulated materials. The white block provides a dedicated labeling surface—no more struggling to write on clear plastic or dealing with labels that peel off. Simply write directly on the bag with a marker or ballpoint pen to record contents, dates, patient information, case numbers, or inventory codes. The reinforced side-welded zipper is engineered for repeated use without tearing or separating from the bag body. Unlike standard zip-seal bags where the closure can pull away after multiple openings, the side-welded construction anchors the zipper track securely to the bag, extending usability in high-volume environments where bags are opened and closed frequently throughout the day. Key Benefits: White write-on block accepts pen or marker for instant labeling Side-welded zipper provides reinforced closure strength 4 mil LDPE construction resists punctures and tears FDA-compliant for food contact and medical applications Reclosable design eliminates need for tape or ties Clear body allows contents verification without opening Specifications: 12" x 15" | 4 mil | LDPE (Low Density Polyethylene) | 500/box | FDA/USDA compliant | White write-on block | Side-welded zipper Common Applications: Laboratory specimen collection and storage, medical supply organization, evidence handling and chain-of-custody documentation, pharmaceutical sample packaging, food sample collection, industrial parts inventory, quality control testing materials, veterinary clinic supplies, contaminated item containment. What are write-on block poly bags? Write-on block poly bags feature a white opaque area printed directly on the bag surface that accepts pen, marker, or pencil for labeling. This eliminates the need for separate adhesive labels and provides a permanent writing surface that won't peel off or become illegible. What is the advantage of side-welded zippers? Side-welded zippers are fused to the bag during manufacturing rather than attached afterward, creating a stronger bond that resists separation even after hundreds of open-close cycles. This makes them more durable than standard zip-seal closures in high-use environments. Can these bags be used for food storage? Yes, these bags are manufactured from virgin LDPE resin that meets FDA and USDA specifications for food contact. They are suitable for storing dry foods, food samples, prepared items, and ingredients in commercial food service and processing environments.

Brand: NFC Bags
SKU: 4025A
Price: 97.16 USD
Availability: InStock

White Block 4 mil 12" x 15" x 4 mil WWO 500/Box

Product Details

Brand: NFC Bags

Gauge: 4

Width: 12

Film Type: Recyclable LDPE

White Block 4 mil 12" x 15" x 4 mil WWO 500/Box

Online Store