Colourful Laser PET Film and Rainbow Sheet for Printing
Wallis colourful laser PET film, also called rainbow PET film, iridescent PET sheet or holographic PET film, is a decorative polyester material developed for packaging, labels, cards, displays and printed promotional products. Its micro-embossed or optical-effect surface reflects light into changing rainbow colors, helping brand owners and converters create premium visual impact without relying only on conventional ink colors.
Wallis supports B2B projects requiring custom sheet or roll formats, pattern direction, color effect, printable surface treatment, slitting, cutting and export packaging. Because holographic PET grades differ by coating and construction, the printing ink, lamination adhesive, converting temperature and end-use requirements should be confirmed through sample testing before mass production.
Important: the term “laser film” describes the laser-like diffraction or rainbow appearance. It does not automatically mean the material is compatible with every laser printer. Dry-toner laser, UV offset, screen, flexographic, gravure and digital printing each require a suitable printable grade and machine trial.
What Is Colourful Laser PET Film?
Colourful laser PET film is a PET-based decorative film carrying a fine optical pattern that diffracts or interferes with light. The visible color changes with the viewing angle, light source and background, producing rainbow, prism, pillar-of-light or other holographic effects. Depending on the selected construction, the film may be transparent, semi-transparent, metallized, color-coated or laminated to another substrate.
For printing and packaging projects, buyers should define whether the PET film will be printed directly, reverse printed, laminated to paper or board, adhesive coated, die-cut, used as an insert, or converted into a finished card or label. This determines the required coating side, surface energy, film stiffness, heat resistance, pattern orientation and roll specification.
Product Specifications
| Parameter | Available Specification |
| Product | Colourful laser PET film / rainbow PET sheet / iridescent holographic PET film |
| Base Material | PET polyester; exact film construction confirmed by project |
| Visual Effect | Rainbow, iridescent, holographic or customized optical pattern, subject to approved sample |
| Appearance | Transparent, semi-transparent, metallized or color-coated options may be developed according to the required grade |
| Thickness | Customized; confirm whether the project requires thin film, laminating film or thicker printable sheet |
| Format | Sheets or rolls; custom width, length, sheet size, roll diameter and winding direction |
| Surface Treatment | Untreated, corona treated or printable primer/coating according to ink and adhesive system |
| Printing | UV offset, screen, flexographic, gravure or selected digital processes after grade and ink testing |
| Converting | Slitting, sheeting, lamination, adhesive coating, die-cutting and mounting, subject to material construction |
| Applications | Packaging, labels, cards, folders, gift wrap, displays, promotional printing and decorative fabrication |
| MOQ and Lead Time | Confirmed according to thickness, pattern, coating, roll width, custom development and order volume |
Select the Correct Rainbow PET Film Construction
“Rainbow PET film” can describe several different constructions. Selecting the wrong construction may cause poor ink adhesion, haze, delamination, cracking, curl or an incorrect visual effect. The purchasing specification should identify the required material structure rather than relying only on a sample photograph.
| Construction | Typical Use | Key Confirmation |
| Transparent Iridescent PET | Window effects, overlays, cards, transparent labels and decorative inserts | Transparency, haze, background color and print side |
| Metallized Holographic PET | Premium packaging, labels, board lamination and reflective graphics | Metal tone, opacity, primer, coating side and oxidation protection |
| Printable Holographic PET | Direct overprinting with approved ink systems | Ink chemistry, surface tension, primer and adhesion test |
| Thermal or Adhesive Laminating Grade | Lamination to printed paper, board or plastic substrate | Adhesive layer, activation temperature, pressure and bond strength |
| Custom Registered Pattern | Brand graphics, security motifs and artwork-aligned effects | Artwork, repeat length, registration tolerance, seam position and origination cost |
Key Features of Rainbow Holographic PET Film
Angle-Dependent Rainbow Effect
The optical pattern produces changing colors as the viewing angle and light direction change. Buyers should approve the effect under agreed lighting because photographs and monitor displays cannot reproduce the exact appearance of the physical film.
PET Dimensional Stability
PET provides a stable base for slitting, printing, lamination and die-cutting. Actual heat resistance, shrinkage, stiffness and curl depend on film thickness, orientation, coating and converting conditions and should be confirmed on the selected grade.
Custom Pattern and Color Development
Projects may specify rainbow direction, prism scale, pillar-light orientation, pattern repeat, transparent or metallized background and color coating. Custom registered effects require approved artwork and clearly defined registration tolerances.
Printable and Lamination Grades
A printable primer or corona treatment can improve ink or adhesive wetting, but surface energy alone does not guarantee final adhesion. Production approval should include the actual ink, curing system, adhesive, substrate and processing speed.
Printing Compatibility and Preproduction Testing
Printer compatibility must be confirmed by material grade. A film suitable for UV offset may not be suitable for aqueous inkjet, solvent ink, toner fusing or conventional oxidative-drying offset ink. White ink is often used beneath CMYK artwork when stronger opacity or predictable brand colors are required over a rainbow background.
| Printing Process | Material Requirement | Recommended Test |
| UV Offset | UV-printable coating and suitable surface energy | Ink cure, tape adhesion, scratch and stacking test |
| Screen Printing | Ink formulated for treated PET or coated film | Mesh/ink trial, drying, flexibility and abrasion test |
| Flexographic or Gravure | Roll-grade film with controlled surface and winding quality | Press speed, solvent/ink compatibility, blocking and rewind test |
| Digital or Inkjet | Dedicated receptive coating matched to ink technology | Printer-specific sample, drying, rub and color test |
| Dry-Toner Laser | Heat-stable, toner-receptive sheet approved for the printer | Fuser-temperature trial, curl, feed and toner adhesion test |
| Reverse Printing | Correct print side, transparency and compatible lamination adhesive | Artwork orientation, bond strength, haze and color appearance |
Lamination, Slitting and Converting Considerations
Adhesive and Lamination Compatibility
When the rainbow film is laminated to paper, board, plastic or printed graphics, the adhesive must wet the selected film surface and retain bond strength after curing. Buyers should test haze, silvering, bubbles, edge lift, curl and visual changes under the intended temperature and pressure.
Pattern Direction and Seam Control
Holographic effects may have a machine direction, repeat length or visible shim line. For premium packaging and large solid areas, the buyer should specify whether a seamless pattern is required and define the acceptable seam position and repeat tolerance.
Roll and Sheet Handling
Roll projects should define width, core diameter, maximum roll diameter, winding direction, splice policy and edge quality. Sheet projects should define finished size, squareness, protective interleaving and packaging method to reduce scratches and blocking.
Protective Coating and Finished Durability
Abrasion, chemical and outdoor resistance depend on the complete finished structure. A clear varnish, overlay or laminate may be required when the printed surface will experience frequent handling, rubbing, moisture or prolonged light exposure.
Applications of Rainbow PET Sheets and Films
Premium Packaging and Folding Cartons
Rainbow PET film can be laminated or transferred to packaging substrates to create shelf impact for cosmetics, gifts, electronics, beverages and promotional products. Structure testing is required when the package has food-contact, recycling, barrier or regulatory requirements.
Labels, Stickers and Brand Authentication
Transparent, metallized and custom-pattern films can be converted into decorative labels or authentication features. A standard rainbow pattern offers visual differentiation but should not be described as a secure anti-counterfeit feature unless the project includes controlled custom origination or additional authentication technology.
Cards, Invitations and Promotional Printing
The material can be used for premium cards, invitations, covers, folders, inserts and point-of-sale displays. White ink, opaque graphics or selective printing can control where the rainbow effect remains visible.
Decorative Fabrication and Creative Products
Sheets may be cut, mounted or laminated for display graphics, craft kits, stationery and visual merchandising. Cutting and folding trials should confirm that the coating does not crack or whiten along tight bends.
Quality Control for B2B Orders
A production specification should use measurable acceptance criteria and an approved physical sample. The rainbow appearance can vary with lighting and angle, so the Golden Sample should be retained by both supplier and buyer for batch comparison.
| Inspection Item | What to Confirm |
| Base Film | Material grade, thickness, width, gauge variation, stiffness, haze and appearance |
| Optical Pattern | Pattern type, direction, repeat, brightness, color shift, seam/shim line and registration |
| Surface | Printable side, corona or primer, target dyne, coating uniformity and scratch condition |
| Printing | Ink wetting, cure, color, tape adhesion, rub resistance, blocking and white-ink opacity |
| Lamination | Adhesive compatibility, peel strength, bubbles, haze, silvering, curl and edge lift |
| Roll Quality | Core, winding direction, tension, telescoping, wrinkles, edge alignment, splices and roll labeling |
| Sheet Quality | Sheet size, squareness, flatness, surface protection, blocking and count per package |
Customization Options
Rainbow, iridescent, prism, pillar-light and project-specific optical effects.
Transparent, metallized, colored or selected laminated constructions.
Custom thickness, roll width, roll length, sheet size and core diameter.
Single-side or application-specific surface treatment and printable primer.
Pattern direction, repeat length, seamless requirement and registered artwork.
Slitting, sheeting, protective film, custom labeling and export pallet packaging.
Why Choose Wallis for Rainbow PET Film Projects?
Wallis supports converters, printers, packaging manufacturers, card producers and distributors that need a decorative PET material matched to a defined production process. The project review focuses on the finished structure—not only the rainbow appearance—so that printing, lamination, slitting, cutting and packaging requirements can be evaluated before bulk production.
B2B specification review for sheet and roll projects.
Custom optical effect, size, surface and converting support.
Samples for ink, adhesive, lamination and cutting evaluation.
Golden Sample confirmation before repeat bulk orders.
Export packaging and product identification for international shipments.
Customer Feedback
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How to Order Colourful Laser PET Film
Step 1: Define the Finished Application
State whether the material will be used for packaging lamination, labels, direct printing, cards, displays, adhesive products or decorative fabrication.
Step 2: Confirm the Material Construction
Confirm transparent or metallized appearance, thickness, pattern, coating side, sheet or roll format and any lamination or adhesive layer.
Step 3: Provide Printing and Converting Details
Provide the press type, ink system, curing method, adhesive, substrate, converting temperature, target speed and finished-product testing requirements.
Step 4: Approve the Physical Sample
Evaluate the sample under agreed lighting and conduct printing, adhesion, lamination, slitting or die-cutting trials. Retain an approved Golden Sample for production comparison.
Information Required for a Fast B2B Quotation
| Quotation Item | Details to Provide |
| Application | Packaging, label, card, display, lamination, adhesive product or other use |
| Appearance | Transparent/metallized, rainbow pattern, color, seamless requirement and reference sample |
| Dimensions | Thickness, roll width/length or sheet size, core and maximum roll diameter |
| Printing | Press model, ink type, white ink, curing method and print side |
| Lamination | Substrate, adhesive, temperature, pressure and target bond performance |
| Quantity | Trial quantity, forecast volume, repeat schedule and destination country |
| Compliance | Required declarations, test reports or restricted-substance requirements for the exact grade |
Frequently Asked Questions
Is colourful laser PET film compatible with every printer?
No. Compatibility depends on the coating, surface treatment, ink system, curing method and printer temperature. The exact material grade should be tested on the intended press before bulk production.
Does “laser film” mean it can be used in a laser printer?
Not necessarily. “Laser film” commonly describes the holographic or diffraction appearance. Laser-printer use requires a heat-stable, toner-receptive sheet specifically tested with the printer’s fusing temperature and feed path.
What is the difference between rainbow, iridescent and holographic PET film?
These terms often overlap commercially. Rainbow or iridescent film emphasizes changing colors, while holographic film generally refers to an embossed optical pattern. The approved physical sample and pattern specification should define the required effect.
Can Wallis supply transparent and metallized rainbow PET film?
Project options can include transparent, semi-transparent, metallized or color-coated constructions. Availability, thickness and MOQ should be confirmed against the requested pattern and end use.
Can the film be printed with white ink and CMYK graphics?
Yes, on a compatible printable grade. White ink can create opacity and control where the rainbow background shows through. Ink cure and adhesion must be tested on the selected film.
What does seamless holographic film mean?
Seamless film is produced to minimize or eliminate visible repeated shim lines across the holographic surface. It is useful for large solid areas where a recurring seam would affect appearance or create waste.
Can a custom holographic logo or registered pattern be produced?
Custom origination may be available for qualified volume projects. The buyer should provide vector artwork, repeat dimensions, registration requirements and security expectations for technical review.
Is rainbow PET film recyclable?
PET is recyclable in appropriate systems, but coatings, metallization, inks, adhesives and laminated substrates can affect recyclability. The finished structure and local collection/reprocessing rules must be evaluated rather than assuming the complete product is automatically recyclable.
Can the material be laminated to paper or cardboard?
Yes, with a compatible film side, adhesive and process. A lamination trial should evaluate bond strength, haze, bubbles, curl, silvering and the final optical effect.
How should the film be stored?
Store the film in its original protective packaging in a clean, dry environment away from direct sunlight, excessive heat, high humidity and corrosive chemicals. Allow cold material to acclimatize before opening to reduce condensation risk.
Can samples be supplied for printing and lamination tests?
Samples can be discussed according to the required pattern, construction and available stock. Provide the intended printing and converting process so the closest suitable grade can be selected for evaluation.
What information is needed for a quotation?
Provide the application, transparent or metallized structure, pattern, thickness, roll or sheet dimensions, printing method, lamination structure, quantity, destination and any required test documentation.
Request Samples and a Factory Quotation
Contact Wallis with your rainbow effect, film construction, dimensions, printing process, lamination method and estimated order volume. The technical team can review the application and prepare a suitable sample and B2B quotation.
