DIOTOP PET7 LAM — Special Material for Durable Industrial Labels

DIOTOP PET7 LAM is a specialized multilayer label material from Inotec designed for durable industrial marking. It is used for labels with DataMatrix codes, QR codes, barcodes and human-readable numbers in applications where ordinary labels may not withstand washing, moisture, friction, chemical exposure, temperature changes or repeated handling.

Application Area

DIOTOP PET7 LAM is used for producing durable labels for returnable containers, plastic bottles, crates, pallets, equipment and other industrial assets. The material is suitable for applications where reliable identification must remain readable throughout the service life of the marked object.

Labels made of DIOTOP PET7 LAM can be used for automatic conveyor scanning, warehouse operations, logistics processes, production tracking and returnable container management.

• marking of returnable containers;
• marking of 18.9 L drinking water bottles;
• identification of plastic bottles and reusable packaging;
• marking of crates, boxes, pallets and containers;
• production and warehouse logistics;
• automatic identification on conveyor lines;
• manual scanning during delivery, return and service operations;
• traceability of reusable assets throughout their life cycle.

Codes and Identifiers

Labels made from DIOTOP PET7 LAM can include different types of machine-readable and visual identification:

• DataMatrix codes;
• QR codes;
• linear barcodes;
• serial numbers;
• human-readable digital codes;
• combined marking with several identifiers on one label.

For automated processes, DataMatrix is often used because it provides compact and reliable coding even on small labels. QR codes are convenient when the label must also provide access to a web page, product passport or service information.

Why Material Durability Matters

In many industrial applications, a label is not just a visual sticker. It becomes part of the identification system. If the code is damaged, detached or becomes unreadable, the object may be lost for the accounting system.

This is especially important for returnable containers and reusable packaging. Each item may pass through many cycles: filling, washing, storage, delivery, return, inspection and reuse. During these cycles, the label may be exposed to water, detergents, mechanical friction, temperature changes and UV exposure.

DIOTOP PET7 LAM is designed for such demanding applications where stable code readability and long-term label adhesion are important.

Material Properties According to Specification

According to the DIOTOP PET7 LAM technical specification, the material has been tested for adhesion, chemical resistance, resistance to washing processes, mechanical stress, UV exposure and temperature resistance.

• adhesion to several types of surfaces;
• chemical resistance to a range of test liquids;
• resistance to washing conditions;
• resistance to mechanical abrasion;
• UV resistance;
• temperature resistance from -40 °C to +100 °C under specified test conditions.

The specification includes test results for adhesion on different surfaces such as glass, polished steel, polypropylene and polyethylene. It also describes resistance tests with various liquids and chemicals, washing tests, abrasion tests, UV exposure testing and temperature testing.

Washing and Chemical Resistance

The material specification includes washing and chemical resistance tests. This is important for applications such as returnable bottles, reusable containers and production assets that may be cleaned repeatedly during operation.

For example, the specification includes testing with washing solution at elevated temperature and washing tests on a polypropylene surface. These tests help evaluate whether the material can be considered for applications where labels may be exposed to cleaning processes.

Actual performance may depend on the surface material, washing chemistry, temperature, pressure, exposure time and number of cycles. Therefore, testing on the real container or object is recommended before serial implementation.

Application for 18.9 L Drinking Water Bottles

One of the possible applications of DIOTOP PET7 LAM is the individual marking of returnable 18.9 L drinking water bottles.

In such projects, each bottle can receive its own unique DataMatrix code or combined label with DataMatrix, barcode, QR code and human-readable number. This makes it possible to identify the bottle during filling, washing, warehouse handling, delivery, return and inspection.

• individual bottle identification;
• control of returnable container circulation;
• washing and filling history;
• logistics tracking;
• delivery and return operations;
• bottle service life monitoring;
• sorting and rejection of damaged bottles.

Before large-scale use, the label should be tested on the actual bottle material and in real operating conditions, including washing cycles, chemical exposure, mechanical contact and scanning conditions on the conveyor.

Automatic and Manual Scanning

DIOTOP PET7 LAM labels can be used both for automatic scanning and manual operations.

Automatic scanning is typically used on production or filling lines, where the code is read by industrial scanners or vision systems. Manual scanning is useful in warehouse, logistics, service and delivery processes, where operators use handheld barcode scanners, mobile terminals or smartphones.

For reliable scanning, the label size, code type, contrast, placement, surface curvature, lighting and scanner configuration should be selected for the specific application.

Testing Before Serial Use

The selection of a label material should always be based on the real operating conditions. Even if the material has strong laboratory test results, the final decision should be made after testing on the actual surface and in the actual process.

• adhesion to the real surface;
• readability of DataMatrix, QR or barcode;
• resistance to washing and cleaning chemicals;
• behavior under temperature changes;
• resistance to abrasion and handling;
• scanning reliability on the conveyor;
• scanning reliability during manual logistics operations;
• durability after repeated operating cycles.

Related Products and Solutions

DIOTOP PET7 LAM can be used as a base material for different label formats and marking concepts. Depending on the project, labels can be produced with DataMatrix codes, QR codes, barcodes, serial numbers or combined identifiers.

• returnable container tracking;
• production traceability;
• warehouse automation;
• industrial asset identification;
• web passport systems;
• quality control and service tracking.

For each project, the label configuration should be selected according to the surface, environment, scanning method and business process requirements.