AUTOMATIC HEAT SHRINK WRAPPING SOLUTIONS

Heat Shrink Wrapping Machines

Seal, wrap and shrink individual products or grouped packages using controlled heat and compatible shrink film. ZONESUN provides shrink tunnels, L-bar sealers, side-sealing machines and automatic PE film bundling lines for retail and transport packaging.

Shrink Tunnels L-Bar Sealing Side Sealing Multipack Bundling POF / PVC / PE Film Automatic Shrink Lines

Automatic Shrink Wrapping Systems

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Semi-automatic L-bar Systems

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Heat Shrink Tunnels

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Sleeve Shrinking Machine

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Shrinking Wrapping Packaging Machine

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HEAT SHRINK PACKAGING GUIDE

Heat Shrink Wrapping Systems for Individual and Grouped Products

Heat shrink wrapping systems apply controlled heat to compatible film around an individual product or grouped package. The process can improve product protection, retail presentation and multipack stability while supporting continuous production line operation.

MAIN MACHINE TYPES

Choose the Right Heat Shrink Packaging System

The correct machine depends on whether the product is already wrapped, requires film sealing or must be grouped into a multipack.

01

Heat Shrink Tunnel

Applies heated airflow to products that have already been wrapped or sleeved with compatible shrink film.

Best suited for Pre-wrapped products, boxes, bottles, cans and trays
02

L-Bar Sealing & Shrinking

Cuts and seals film around individual products before transferring them through a shrink tunnel.

Best suited for Boxes, cosmetics, books, food products and daily goods
03

Side-Sealing Shrink Wrapper

Creates a continuous side seal for products with varying or extended lengths before heat shrinking.

Best suited for Continuous production and products with varying lengths
04

PE Film Bundling Line

Groups products, wraps them with stronger PE film and shrinks the film into a stable transport or retail multipack.

Best suited for Bottled drinks, cans, cartons and grouped packages

Typical Heat Shrink Wrapping Process

01

Product Feeding

Transfer products into the wrapping area.

02

Product Positioning

Align individual products or form multipack groups.

03

Film Wrapping

Apply shrink film around the product or group.

04

Film Sealing

Cut and seal the film around the package.

05

Heat Shrinking

Pass the package through controlled heated airflow.

06

Cooling & Collection

Stabilize the film and discharge the finished package.

SHRINK FILM GUIDE

Common Films for Heat Shrink Packaging

Film type, thickness, sealing characteristics and shrink temperature must match the machine and product.

01

POF Film

Commonly used for clear retail packaging where appearance, flexibility and clean sealing are important.

02

PVC Film

Used for compatible retail wrapping applications according to the product and film specification.

03

PP Film

Suitable for certain product wrapping applications when matched with the correct sealing and shrinking conditions.

04

PE Film

Stronger and thicker film commonly used for bottle, can and carton multipack bundling.

Important: Temperature values should not be selected only by film name. Film formulation, thickness, product size and conveyor residence time can change the required settings.

COMMON APPLICATIONS

Products Suitable for Heat Shrink Wrapping

Beverage Bottles Bottle Multipacks Cans Food Boxes Cosmetic Boxes Pharmaceutical Cartons Books Printed Products Disposable Tableware Tissue Products Daily Goods Tray Products

MACHINE SELECTION GUIDE

How to Choose a Heat Shrink Wrapping Machine

Confirm the product, film and required output before choosing a shrink tunnel or complete sealing and shrinking system.

01

Define the Packaging Format

Confirm whether the application uses individual wrapping, grouped packaging or PE-film multipack bundling.

02

Provide Product Dimensions

Supply the maximum product length, width, height and weight, including the final grouped-pack dimensions.

03

Confirm the Film

Provide the film type, thickness, width, shrink ratio and sealing requirements when available.

04

Set Production Speed

Required packs per minute determine the sealing structure, conveyor speed and tunnel length.

05

Check Tunnel Clearance

The tunnel opening must provide sufficient clearance around the wrapped product while maintaining effective airflow.

06

Confirm Factory Conditions

Check the power supply, heating capacity, ventilation, conveyor height and available installation space.

SHRINKING QUALITY

Factors That Affect the Finished Package

01

Tunnel Temperature

The heating temperature must match the film type, thickness, product size and required shrinking result.

02

Conveyor Speed

Conveyor speed controls how long the package remains inside the heated tunnel.

03

Air Circulation

Balanced heated airflow helps the top, bottom and sides of the film shrink more evenly.

04

Film Positioning

Incorrect film width, sealing position or excess film can produce wrinkles and uneven finished packages.

AUTOMATION OPTIONS

Shrink Tunnel or Complete Automatic Line?

01

Standalone Shrink Tunnel

Suitable when products are wrapped separately

  • Lower initial investment
  • Manual or separate film wrapping
  • Adjustable temperature and speed
  • Suitable for multiple smaller batches
02

Sealing & Shrinking System

Suitable for continuous individual product packaging

  • Integrated film cutting and sealing
  • Automatic transfer into the tunnel
  • Reduced manual film handling
  • Suitable for retail product packaging
03

Automatic Bundling Line

Suitable for beverage and grouped transport packs

  • Automatic product grouping
  • Automatic PE film feeding
  • Integrated shrinking and cooling
  • Customized grouping layout and speed

PROJECT INFORMATION

Information Needed for Machine Configuration

Product name and application Maximum product dimensions Single pack or grouped layout Film type, width and thickness Required packs per minute Desired finished appearance Power supply and factory conditions Available installation space

Sending product and film samples helps confirm the sealing structure, tunnel temperature, conveyor speed and finished shrink appearance before the final machine configuration is determined.

BUYING GUIDE

Heat Shrink Wrapping Machine FAQ

What is the difference between a shrink tunnel and a shrink wrapper?

A shrink tunnel only applies heat to products that have already been wrapped. A complete shrink wrapper also applies, cuts and seals the film before shrinking.

What is the difference between L-bar and side sealing?

L-bar sealing creates seals around a defined package length. Continuous side sealing is generally more suitable for automatic production and products with varying lengths.

Which film is suitable for my product?

Film selection depends on product weight, package appearance, required strength, sealing method and tunnel conditions. Product and film testing is recommended.

Can one tunnel handle products of different sizes?

Many tunnels can handle different products within their configured opening and load range. Temperature and conveyor speed may need adjustment for each package.

Why does the film wrinkle after shrinking?

Wrinkles may be caused by unsuitable film, incorrect film width, poor positioning, insufficient heat, excessive speed or uneven tunnel airflow.

Can a shrinking machine connect to an existing production line?

Yes. Product feeding, grouping, wrapping, sealing, shrinking, cooling and collection equipment can be integrated according to the existing conveyor height and production speed.