Gold Metallized PET Sheet Film for Blister Packaging

Gold Metallized PET Sheet Film for Blister Packaging & Thermoforming

Wallis gold metallized PET sheet film is a decorative PET-based packaging material developed for blister packaging, thermoformed trays, cosmetic packaging, electronics packaging, gift packaging and premium retail displays requiring a metallic gold appearance.

Unlike conventional thin metallized BOPET film used primarily for flexible packaging and lamination, the current Wallis product is listed in approximately 0.15–3.0 mm thicknesses and is positioned for blister applications. This makes thickness, rigidity, forming depth, metallized-layer adhesion and appearance after thermoforming important purchasing considerations.

For packaging converters, blister manufacturers, thermoforming factories, printers and brand packaging suppliers, Wallis can review customized thickness, dimensions, gold tone, surface finish, printing requirements and forming conditions according to the finished packaging design.

Because metallic coatings can behave differently during stretching and heating, buyers should approve both the flat material and a representative thermoformed part before bulk production. Where barrier, light-blocking, food-contact or regulated-packaging performance is required, the applicable test values and documentation should be confirmed for the specific grade.

Gold Metallized PET Sheet Film Specifications

Important material distinction: Many products sold online as “metallized PET film” are thin BOPET flexible films measured in microns and primarily designed for flexible packaging, printing or lamination. Wallis currently lists this blister-grade product in 0.15–3.0 mm. Buyers should therefore confirm whether they need thin flexible VMPET film or thicker PET sheet/film for blister conversion before ordering.

What Is Gold Metallized PET Sheet Film?

PET Substrate with a Metallic Decorative Surface

Gold metallized PET combines a PET substrate with a reflective metallic surface system. Depending on the grade, the final gold appearance can involve metallization together with a gold-color coating or lacquer layer.

Gold Color Does Not Necessarily Mean Real Gold Metal

In packaging terminology, “gold metallized PET” normally describes the visual color and metallic effect. It should not automatically be interpreted as a PET substrate plated with elemental gold. Buyers requiring a specific metal or coating chemistry should request the applicable material construction.

Metallic Appearance for Premium Packaging

The reflective gold finish gives blister packs, trays and retail packaging a stronger decorative effect than conventional transparent or opaque PET. Different gold shades can support luxury, cosmetic, gift and promotional packaging designs.

Metallization Quality: Gold Shade, Adhesion & Surface Uniformity

Gold Shade Consistency

Metallic gold can appear different under daylight, retail LED lighting and dark backgrounds. Large packaging programs should define an approved physical color reference and acceptable batch-to-batch variation.

Optical Density

Optical density is commonly used in metallized-film manufacturing to describe the density of the metallic layer and resulting light transmission. If light shielding or barrier performance is important, buyers should specify an OD target rather than relying only on the words “metallized” or “gold.”

Metal or Coating Adhesion

Poor adhesion can cause metallic coating transfer, flaking or local loss during printing, slitting, die cutting, forming or lamination. Appearance-critical projects should define a suitable adhesion test and inspect material after conversion.

Surface Uniformity

Inspect for scratches, pinholes, uneven coating, streaks, color variation and visible defects. Metallic surfaces can make some defects more noticeable than clear PET.

Gloss or Matte Gold

Glossy metallic gold produces stronger reflection, while matte metallic finishes can create a softer premium appearance. Gloss should be specified numerically if it is a controlled engineering requirement.

Thermoforming Gold Metallized PET for Blister Packaging

Thermoforming a metallized PET structure requires more evaluation than forming conventional clear PET because the surface layer is stretched together with the PET substrate. Final appearance depends on the selected material construction and forming geometry.

Confirm the Thermoformable Grade

Not every metallized polyester film is designed for thermoforming. Conventional thin BOPET metallized packaging film may be optimized for lamination rather than deep drawing. Buyers requiring formed blister cavities should confirm that the selected Wallis grade is suitable for the intended forming process.

Cavity Depth and Draw Ratio

Deeper cavities and sharper corners create more local stretching. Provide cavity dimensions, draw ratio, tool geometry and minimum corner radius so the finished metallic appearance can be evaluated.

Metallic Layer Stretching

Strong stretching may reduce metallic density in highly drawn areas or create visible changes in reflection and color. Deep-formed samples should be inspected for cracking, whitening, pinholes, loss of gloss and uneven gold appearance.

Heating Conditions

Heater temperature, heating time, sheet temperature, mold temperature and forming speed influence PET deformation and surface appearance. Production parameters should be developed using the actual film construction rather than copied from a clear PET grade.

Metallized Side Orientation

Buyers should confirm whether the metallic side faces the tool, the product or another laminated layer. Orientation can affect scratching, printing, adhesive compatibility and the visible appearance of the finished blister.

Approve a Formed Sample

The most reliable qualification method is to form the material using the intended blister mold and inspect the completed cavity for appearance, coating integrity, dimensional stability and product fit.

Barrier & Light-Blocking Performance

Metallization Can Reduce Light Transmission

A sufficiently dense metallic layer can reduce visible-light transmission compared with clear PET. The degree of shielding depends on optical density, coating uniformity and the complete material structure.

Barrier Performance Must Be Measured

High-barrier flexible metallized PET grades can achieve improved oxygen and water-vapor barrier properties, but those results cannot automatically be applied to every gold PET sheet. Where barrier performance is required, specify the applicable OTR and WVTR test method and target.

Test Barrier After Thermoforming

A flat sheet and a stretched blister cavity may not provide identical barrier performance. Forming can change metallic-layer continuity, particularly in corners and high-draw areas. Sensitive packaging applications should therefore evaluate the formed package rather than only the flat film.

UV Protection Should Not Be Assumed

Reduced light transmission does not automatically equal a defined UV-protection rating. If a product is UV-sensitive, request spectral transmission or other applicable test data for the selected material.

Printing on Gold Metallized PET

Confirm the Printable Side

Metallized PET constructions can have different surface treatments on the PET side and metallic side. Before printing, confirm which side is intended to receive ink and whether corona, chemical treatment, primer or coating is required.

Ink Adhesion Testing

Printing performance depends on surface tension, coating chemistry, ink formulation and curing conditions. Conduct adhesion tests after printing and again after forming or bending when the printed surface will experience mechanical stress.

Gold Background Changes Printed Colors

Transparent or semi-transparent inks interact with the reflective gold substrate and may look different from the same ink printed on white PET or paperboard. Color-critical artwork should be approved on the actual gold material.

Opaque Ink Layers

Opaque white or other high-opacity ink layers can be used where designers want to isolate certain colors from the metallic background. Printing sequence should be agreed during artwork and proof preparation.

Reverse Printing

Certain multilayer structures can use reverse printing before lamination so graphics are protected within the final structure. Feasibility depends on layer construction and should be confirmed for the selected grade.

Converting, Cutting & Lamination

Die Cutting

PET sheet can be die cut into blister cards, decorative panels and package components. Cutting rules and pressure should be optimized to minimize burrs, cracking or damage to the metallic surface.

Slitting and Sheet Cutting

Roll width and sheet dimensions can be selected according to printing, thermoforming and die-cutting equipment. Metallic surfaces should be protected during slitting and stacking to reduce scratches and pressure marks.

Adhesive Lamination

If the gold PET will be laminated to paperboard, another plastic film or another substrate, confirm adhesive compatibility with the applicable PET or metallized surface and verify bond strength after curing.

Heat Sealing

Standard metallized PET should not automatically be described as heat-sealable. A heat-seal coating or compatible laminate structure may be required depending on the packaging design.

Applications of Gold Metallized PET Packaging Material

Cosmetics and Beauty Packaging

Gold metallic surfaces can support premium packaging for beauty accessories, cosmetics, personal-care items and gift sets where shelf appearance is an important design consideration.

Electronics Accessories

Earphones, cables, small electronic parts and technology accessories can use metallic blister trays or decorative backing components to create a premium retail presentation.

Gift and Promotional Packaging

Gold PET can be used for gift packs, promotional products, seasonal packaging and limited-edition retail programs requiring a strong metallic visual effect.

Jewelry and Fashion Accessories

Metallic gold packaging can complement jewelry, fashion accessories and small premium consumer products when the package design requires a luxury appearance.

Food and Confectionery Packaging

Gold PET can be evaluated for chocolate trays, confectionery inserts and selected food-packaging applications only when the specific grade, coating, printing and complete package comply with the applicable food-contact requirements.

Healthcare and Pharmaceutical Packaging

Use in healthcare or pharmaceutical packaging requires grade-specific regulatory qualification and package-performance validation. This product should not automatically be treated as pharmaceutical blister lidding foil or as a qualified pharmaceutical barrier material.

Gold Metallized PET Sheet vs Flexible VMPET Film

Gold Metallized PET vs Aluminum Lidding Foil

Gold metallized PET sheet and aluminum blister lidding foil serve different functions and should not be treated as interchangeable materials.

How to Choose Gold Metallized PET for Blister Packaging

1. Define Whether the Material Will Be Thermoformed

State whether the material will become a formed blister cavity, flat backing component, decorative insert, laminated board or another structure. This determines the required PET grade.

2. Select Thickness and Rigidity

Provide the required thickness within the current 0.15–3.0 mm range or request another specification for evaluation. Thickness should match product weight, blister dimensions and required stiffness.

3. Define the Gold Appearance

Specify light gold, classic gold, dark gold, rose-gold direction, glossy metallic or matte metallic appearance and provide a physical reference when color matching is important.

4. Provide the Blister Geometry

Provide cavity depth, length, width, corner radius and tool layout so forming stress and metallic-surface appearance can be evaluated.

5. Define Printing Requirements

State the printing process, ink chemistry, required printable side, artwork colors and whether opaque white or primer layers are required.

6. Specify Barrier or Light Requirements

If the package protects a light-, oxygen- or moisture-sensitive product, provide numerical targets and test methods instead of requesting only “high barrier.”

7. Confirm Food or Regulated Packaging Requirements

Identify the destination market and required regulatory documentation before selecting material for direct or indirect food contact, healthcare or pharmaceutical use.

8. Approve a Converted Sample

Print, cut, form, laminate or seal representative material using the actual production process before approving bulk supply.

Quality Control for Gold Metallized PET Sheet Film

Metallic surfaces require both dimensional and visual inspection. Depending on the approved order specification, quality-control items can include:

• PET grade and production batch identification

• Thickness and thickness tolerance

• Roll width or sheet dimensions

• Gold shade and batch-to-batch color consistency

• Gloss or matte appearance where specified

• Optical density where specified

• Metal or coating adhesion where specified

• Surface scratches and pressure marks

• Pinholes, streaks and coating defects

• Flatness and roll quality

• Printable-side or surface-treatment identification

• Ink adhesion after printing where applicable

• Thermoforming appearance after sample forming

• Cracking or coating loss in high-draw areas

• Barrier or light-transmission data where specified

• Protective film and export packaging condition

Inspect Both Flat and Formed Material

A flat sheet can show excellent gold uniformity but change after thermoforming. Blister projects should therefore include visual inspection of representative formed cavities.

Control Reference Samples

For repeat packaging orders, retain an approved flat material sample and finished blister sample to control metallic shade, gloss, surface quality and forming appearance between production batches.

Sustainability Considerations

PET Is a Thermoplastic Substrate

PET can be recycled where suitable collection and recycling systems exist. However, recyclability of the finished metallized packaging depends on the complete structure and local recycling process.

Metallization and Coatings Matter

Metallic layers, colored coatings, printing inks, adhesives, labels and multilayer laminates can affect sorting and recycling behavior. Buyers should evaluate the complete package rather than making recycling claims based only on the PET substrate.

Avoid Unsupported Environmental Claims

Terms such as eco-friendly, fully recyclable or low-carbon should only be used when supported by the final material construction, applicable data and destination-market recycling infrastructure.

Wallis PET Sheet Production & B2B Customization

Shanghai Wallis Technology Co., Ltd. supplies PET, PETG, PVC, polycarbonate, acrylic and other plastic sheet and film products for packaging, printing, card, display and industrial applications.

For gold metallized PET packaging projects, buyers can provide required thickness, dimensions, gold shade, surface finish, metallized-layer requirement, printing method, thermoforming geometry, barrier targets and packaging application for technical review.

Packaging & Export Protection

Gold metallic PET surfaces should be protected against scratches, rubbing, pressure marks, dust and moisture during storage and international transportation. Packaging requirements should be selected according to material thickness, roll or sheet format and surface sensitivity.

Appearance-critical orders can specify protective film, separators, edge protection, roll-end protection, pallet requirements and customized package labels before shipment.

Why Choose Wallis for Gold Metallized PET?

Blister-Focused PET Material Supply

Wallis supplies PET materials for blister, thermoforming, folding-box and other packaging applications, helping industrial buyers coordinate material specifications with converting requirements.

Custom Thickness

Current gold PET specifications include approximately 0.15–3.0 mm, with other requirements subject to technical confirmation.

Custom Gold Shades and Finishes

Metallic color and finish requirements can be reviewed according to the customer's reference sample, brand design and finished packaging.

Sample Forming Evaluation

Blister manufacturers can evaluate samples using their actual tooling and forming process before approving production material.

B2B and OEM Supply

Wallis supports packaging converters, thermoforming factories, printers, distributors and brand packaging suppliers requiring customized PET sheet and film specifications.

Trusted by Customers Worldwide

Wallis supports international buyers with sampling, specification review, production communication and export packaging for custom plastic sheet projects.

Company Daily Operations

Customer Feedback

FAQ About Gold Metallized PET Sheet Film

What is gold metallized PET film?

It is a PET-based material with a reflective metallic surface system designed to create a gold appearance. Depending on the grade, the structure can involve metallization together with a colored coating or lacquer.

Is gold metallized PET made with real gold?

Not necessarily. “Gold metallized” usually describes the metallic gold appearance rather than indicating elemental gold plating. Request the exact coating or metallization construction if material chemistry is important.

What thickness does Wallis provide?

The current Wallis product specification lists approximately 0.15–3.0 mm or customized for this blister application.

Is this the same as 12-micron VMPET film?

No. Conventional VMPET is commonly a very thin flexible metallized polyester film used for lamination and flexible packaging. This Wallis product is listed at substantially higher thicknesses and is positioned for blister applications.

Can gold metallized PET be thermoformed?

Thermoforming can be evaluated using the appropriate grade. Because the metallic surface stretches during forming, buyers should test the intended cavity depth and tool geometry before bulk production.

Does the gold coating crack during thermoforming?

Excessive stretching can potentially change or damage some metallized or coated surfaces. The result depends on material construction, draw ratio, corner radius and forming conditions, so a formed sample should be inspected.

Can Wallis customize the gold color?

Gold-tone and surface-finish customization can be discussed according to project requirements. Provide a physical reference for color-critical packaging programs.

Can you supply matte gold PET?

Matte or lower-gloss metallic effects can be evaluated according to the required construction and production feasibility. Confirm the desired appearance using a sample.

Can gold metallized PET be printed?

Suitable surfaces can be printed with compatible inks, primers or surface treatment. The printable side and ink-adhesion requirement should be confirmed before ordering.

Why do printed colors look different on gold PET?

Semi-transparent inks allow the reflective gold substrate to influence the final color. Opaque white or other blocking layers can be used where the gold background should not affect selected artwork.

Does gold metallized PET provide an oxygen barrier?

Metallization can improve oxygen barrier in properly engineered films, but the exact performance depends on metallization density, pinholes, substrate and package structure. Request an OTR value if oxygen barrier is required.

Does it provide a moisture barrier?

Metallization can improve water-vapor barrier performance, but a specific WVTR should be confirmed for the selected grade and complete packaging structure.

Does gold PET block UV light?

A metallic surface can reduce light transmission, but a defined UV-protection claim requires appropriate spectral or transmission testing.

What is optical density in metallized PET?

Optical density is a measure commonly used to characterize how much light passes through a metallized layer. Higher or lower OD requirements should be selected according to appearance and functional performance rather than assumed from color alone.

Why is metal adhesion important?

Strong coating or metallized-layer adhesion helps reduce flaking, transfer and delamination during printing, converting, thermoforming and handling.

Can gold PET be die cut?

Yes, appropriate PET sheet can be die cut. Tooling should be selected according to thickness and the finished packaging structure to reduce edge damage.

Can gold PET be laminated to paperboard?

Compatible metallized PET constructions can be laminated to paperboard or other substrates when the adhesive and bonding surface are appropriate. Bond strength should be tested after curing.

Is gold metallized PET heat sealable?

Not automatically. Heat-sealable packaging generally requires an appropriate sealing layer or coating. Confirm the sealing substrate, seal temperature and required seal strength before ordering.

Can gold metallized PET be used for pharmaceutical blister packaging?

Pharmaceutical applications require grade-specific regulatory, barrier, sealing and stability qualification. This decorative PET product should not automatically be treated as pharmaceutical blister lidding material without the required documentation and validation.

Can it be used for food packaging?

Selected grades may be evaluated for food packaging only when the PET substrate, metallic coating, inks, adhesives and complete package meet the applicable food-contact requirements for the target market.

Is metallized PET recyclable?

PET is a recyclable thermoplastic, but the metallic layer, color coating, printing, adhesives and multilayer construction can influence recycling acceptance. Local recycling requirements should be checked for the complete finished package.

Should I request a sample before production?

Yes. For thermoformed blister packaging, test the sample using the actual forming mold and inspect gold color, coating integrity, cracking, printing and finished package appearance.

What information should I provide for a quotation?

Provide required thickness, width or sheet dimensions, gold color reference, gloss or matte requirement, blister cavity dimensions, forming method, printing requirements, barrier targets if applicable, quantity, regulatory requirements and delivery destination.

Request Gold Metallized PET Samples & Factory Pricing

Looking for a reliable gold metallized PET sheet film manufacturer for blister packaging? Send Wallis your required thickness, dimensions, gold shade, forming geometry, printing process, barrier requirements and order quantity for technical review, sample testing and B2B factory pricing.