Rotary Multi-Laser Bottle Labeling for High-Capacity PET Marking

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Solution Overview

Problem

Existing label-free PET bottles can only mark a small amount of content with laser, limiting advertising on individual bottles and restricting sales channels, and the removal of adhesive labels wastes resources and complicates recycling.

Innovation Solution

An automatic production equipment with a rotating shaft, annular plates, and multiple laser heads for continuous laser marking, combined with a conveying system that reduces energy consumption and minimizes bottle damage, ensures stable feeding, and allows for high-capacity labeling.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of substance

If laser printing technology is used to label the bottle body, then the utilization of plastics is reduced and recycling is simplified, but the bottle body can only be marked with a small amount of content which limits advertising and sales channels

Engineering Contradiction:

Improveplastic utilizationVSAvoidlabeling content capacity

Core Design Contradiction:

Loss of substanceVSAdaptability or versatility

Solution Approach 1:

The patent divides the labeling system into multiple independent laser heads (first laser head, second laser head, etc.) arranged in array. Each laser head can independently mark content on the bottle, enabling large-breadth and high-capacity labeling while maintaining the label-free plastic reduction benefit

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent combines multiple laser heads with a rotating annular plate structure to create an integrated labeling system. The annular plate rotates to position different bottles under different laser heads, merging the functions of multiple lasers into a continuous production line that achieves both plastic reduction and high-capacity content marking

Inventive Principle:

Principle #5Merging (Combining)

2Adaptability or versatility

If adhesive labels are removed from bottles for recycling, then label-free bottles can be achieved, but label adhesive remains on the bottle body which complicates handling and reduces environmental value

Engineering Contradiction:

Improvelabel-free capabilityVSAvoidadhesive residue

Core Design Contradiction:

Adaptability or versatilityVSObject-generated harmful factors

Solution Approach 1:

The patent replaces the mechanical adhesive label system with a laser direct marking system. Laser printing eliminates the need for adhesive labels entirely, marking content directly onto the bottle surface without leaving any residue, thus achieving true label-free bottles that are easy to handle and recycle

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Productivity

If multiple laser heads are used for high-capacity labeling, then large-breadth and high-capacity labeling is achieved, but device complexity increases

Engineering Contradiction:

Improvelabeling capacityVSAvoidnumber of laser heads

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent designs the annular plate structure to serve multiple functions: it holds multiple laser heads, provides rotation for positioning bottles under different lasers, and integrates the conveying mechanism. This universal structure reduces overall system complexity despite using multiple laser heads

Inventive Principle:

Principle #6Universality (Multi-functionality)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Enables large-breadth and high-capacity labeling of label-free packaging bottles, reducing resource waste and simplifying recycling, while maintaining production efficiency and reducing energy consumption.

Implementation Method 1

a plurality of laser heads for bottle labeling are arranged on the machine frame, and the plurality of laser heads are distributed in a fan ring shape on one side of the driving annular plate away from the bottle body conveying device

Methodology Applied

Scientific EffectLaser: Laser

Data Source

PatentEP4527630B1Automatic production equipment for label-free packaging bottles and labeling method thereof

Publication Date: 2025.10.01 SHANGHAI ONLYTEC EQUIP CO LTD

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AI summary

The present application relates to an automatic production equipment for label-free packaging bottles, which belongs to the technical field of packaging bottle production. The equipment comprises a machine frame, wherein a bottle body conveying device and a bottle body labeling device are arranged on the machine frame, wherein the bottle body labeling device comprises a rotating shaft arranged on the machine frame and an driving annular plate coaxially fixed on the rotating shaft, a driving mechanism for driving the rotating shaft to rotate is arranged on the machine frame, a plurality of storage plates are rotatably arranged on a top portion of the driving annular plate, the plurality of storage plates are distributed in a circular array along a circumferential direction of the driving annular plate, at least one self-rotating motor for driving each of the plurality of storage plates to rotate is arranged at a bottom portion of the driving annular plate, a servo annular plate is coaxially fixed on the rotating shaft, pressing assemblies corresponding to the storage plates are arranged on the servo annular plate, a plurality of laser heads for bottle labeling are arranged on the machine frame. The present invention is conducive to meeting the labeling requirements of large breadth and high production capacity for packaging bottles, is conducive to the mass production of the label-free packaging bottles, and is conducive to environmental recycling, energy consumption saving, and production cost reduction.