How to Approve a Custom PE Bag Sample Before Bulk Production

Check fit, single-wall thickness, closure, print and packing against a written specification and a real packing trial.

In-process film inspection at Hengyi. Finished bag samples need their own application checks.

Identify what the sample represents

A stock sample can help compare feel and construction. A custom unprinted sample may verify fit and gauge when made to the agreed specification. A printed approval sample can also show colour and placement. Record which attributes the sample represents before releasing an order.

Measure the finished bag and trial the contents

Measure finished dimensions using the agreed reference points, then test usable opening and depth with the actual item. Agree whether a thickness reading represents one film wall or two stacked walls. Record your measuring method alongside the results.

Use the intended packing method

Load, close and handle the sample in the normal packing sequence. Check sharp contact points, the closure and areas under tension. For heat sealing, run a trial with the intended equipment and conditions. Agree any performance checks and acceptance limits for the application.

Record what is approved

Record the item number, sample and drawing revisions, measurements, photos and any changes requested. Identify what remains open, such as artwork or outer packing. Keep an approved reference sample where practical.

Can an unprinted sample approve the final print?

An unprinted sample can verify selected physical attributes. Review artwork and print appearance on the relevant printed proof or sample before releasing the printed order.

Hangzhou Hengyi Packaging Material Co., Ltd. reviews custom PE packaging against the intended use and agreed specification. Read Single-wall versus total thickness or send your requirements for review.