Plastic Printing Stickers are commonly used in industries ranging from packaging and electronics to automotive and food service. One critical concern for users is whether these stickers can withstand high temperatures without warping, shrinking, or detaching. Understanding how heat affects these materials is essential when selecting a label or decorative element for environments where elevated temperatures are expected.

Plastic stickers are typically made from materials like polypropylene (PP), polyethylene (PE), or polyvinyl chloride (PVC). Each of these plastics has different thermal properties. For instance, PP and PE tend to soften at lower temperatures compared to PVC, which has a slightly higher heat tolerance. This means that the ability of a sticker to resist deformation under heat greatly depends on the plastic type used as the base.

When exposed to sustained temperatures above their recommended range—usually between 60°C to 80°C—plastic materials may begin to soften or deform. This can result in warping, curling at the edges, or bubbling. Additionally, the type of adhesive used plays a crucial role. Standard pressure-sensitive adhesives may lose bonding strength when overheated, causing the sticker to peel or slide out of place.

However, manufacturers often offer heat-resistant variants designed for more demanding conditions. These specialized stickers may use high-temperature plastics and silicone-based or acrylic adhesives engineered to perform reliably at temperatures exceeding 100°C or even up to 150°C. Such options are commonly used on electronics, machinery, or appliances where heat exposure is routine.

It’s also important to consider the surface on which the sticker is applied. Smooth, heat-stable surfaces like metal or glass offer better adhesion at high temperatures than porous or heat-sensitive materials such as untreated wood or low-grade plastics. A clean, dry application environment also ensures stronger bonding, reducing the chances of peeling as temperatures rise.

In short-duration exposures—such as passing through a hot environment briefly—most general-purpose stickers may perform adequately. However, for continuous or repeated exposure to heat, it’s essential to choose labels specifically rated for thermal endurance. These are often tested for performance in ovens, engine bays, or industrial settings, and are labeled accordingly.

In conclusion, while general plastic-based stickers may deform or lose adhesion in high-temperature settings, heat-resistant alternatives are available that maintain both structural integrity and appearance. Evaluating the intended application conditions—temperature range, surface type, and exposure duration—is key to selecting a reliable solution. For any high-heat usage, always verify the sticker’s thermal specifications and request product samples for preliminary testing if necessary.

Material Plastic: PVC， PET

Thickness: About 1.0-1.5mm usually

MOQ: 100pcs, 500pcs, all depends customer's request, small orders are accepted

Size and shape: Custom-made, oval, rectangle, square, round, irregular shape ok

Colors: Customized colours, Pantone Matching System

Printing: Silkscreen printing, digital printing

Fixing: Strong permanent adhesive, 3M adhesive tape on the back

Drawing format: AI, PDF, CorelDraw, EPS, PSD, Hi-res PDF