Destructive stickers - PUNARVASU GRAPHICS

Destructive Stickers are used for anti counterfeiting, brand protection and tamper evident seals. Destructible labels are used for authentication, theft reduction and protection against counterfeit on equipments, instruments, electronic parts and components in industrial and manufacturing sectors. Destructive labels are made out of ultra destructible material, with very strong adhesive. These destructive labels, upon attempt to remove, will fracture and rupture into small destructive bits which cannot be mended, leaving behind the tamper evidence. These destructive labels can be provided with bar-codes and serial numbers for added security.


Source; PUNARVASU GRAPHICS
Website: http://punarvasugraphics.com/wpcproduct/destructive/

Poly and Vinyl Labels, Decals and Stickers - Specialty Printing

Poly and Vinyl are the most commonly used materials for labels.    Vinyl, otherwise known as polyvinyl chloride, or PVC, is a thermoplastic material, and so it can be reprocessed using heat. In respects to what we provide at Specialty Printing, we use a semi-flexible vinyl film coated with a permanent pressure-sensitive acrylic adhesive and backed with a two-sided polycoated layflat release liner for use over sheets.

We also provide decals and labels made from Mylar (a registered trademark owned by Dupont Tejjin Films), that is essentially a generic term for polyester film or plastic sheet.

There are numerous applications using Poly, Vinyl and Mylar – if you are not certain of your exact needs, Specialty Printing will assess your needs to determine the appropriate label solution for you.

Source: Specialty Printing 
Website: http://www.specialtyprintingusa.com/vinyl-labels.htm

Definition of 'Vinyl (PVC)' as it relates to labels. - Label Planet Ltd

Vinyl is a term commonly used to refer to polyvinyl chloride; a synthetic plastic that is used in the manufacturing of a wide variety of items. Polyvinyl chloride is flexible, durable, strong, and (perhaps most importantly) highly reactive, which means PVC is very easy to convert and can be produced with the precise properties required for a particular application. Unmodified PVC is converted by adding a selection of additives that will determine the final properties of the finished PVC that is used to make products; additives include heat and UV stabilisers, lubricants, plasticisers, flame retardants, fillers, and pigments, amongst many others.
In labelling, vinyl is commonly used to make films, which form either the face material of a label or act as a protective and decorative coating for a face material.

PVC & Vinyl Labels - Kromo Prints.

PVC Labels

PVC labels are made of polymer vinyl chloride which gives flexibility and softness to labels designed through it. It’s applied on apparels, doors, automobiles and glass windows. The PVC label are more attractive and noticeable as they comes out of plain surface with flexible and rubber shape text and design, which makes it worth looking at. They come in all shapes and sizes with multi colors which doesn’t lose its brightness. They are 100% customized and come with strong adhesive strength and ability to withstand water threat. 



Vinyl Labels

Vinyl labels have unique feature of giving protection from moisture, chemical and UV rays with the special coating which makes it resilient label. They are widely applied on cars, motorcycle, bumpers, windows, boats, ships, etc. Superior grade vinyl and sophisticated printing techniques are being employed in designing these labels. They are also highly water resistant in damp, drizzling, pouring or full water submersion circumstances.

Source:  Kromo Prints.

Label Adhesives Guide Part 1: Types and Properties - Consolidated Label

With many different options available, selecting the right adhesive can be intimidating – especially when all you want is a label that “just works.” In this guide, you’ll learn the basic characteristics of Pressure Sensitive Adhesives (a fancy term for self-stick adhesives where no solvents or heat are required to activate the adhesive) so you can find the right “stick” for your labels.

Types of Label Adhesives

There are three main classifications of adhesives to know: permanent, removable and repositionable. Within those categories, pressure sensitive adhesives have different properties that vary from one to the next, but we’ll get to that in a bit. First, let’s learn more about adhesive types and reasons why they’re used.
  • Permanent: The majority of labels we print use a permanent adhesive because they work for most label applications and tend to be the most budget-friendly. Since permanent adhesive labels create a strong bond with the container they are applied to, removing the label can damage the label or container.
  • Removable: Labels with a removable adhesive can be removed for a window of time after application without damaging the label or surface it’s applied on. Removable adhesive labels and stickers are ideal for temporarily marking items, store coupons, and limited-time promotions. Be aware that temperature can affect the stickiness and removable capabilities of labels with this adhesive type.
  • Repositionable: Repositionable adhesives are designed for short-term removability in cases where the label needs to be repositioned or reapplied. This adhesive can save you time and resources in the long run when labels need to be removed for repositioning (e.g. a crooked label on a container) or reapplied to another surface without losing much adhesion. Depending on which type of repositionable adhesive is used, it can eventually become permanent. The time between initial application and permanent bonding varies depending on the formulation.
printing-label-adhesives-guide

Getting Technical: Adhesive Properties

The information above is probably enough to help you understand the type of adhesive that will work best for your situation and our reps are ready to walk you through all the variables that go along with these selections. That said, label adhesives can have varying characteristics even if they’re categorized as the same “type,” so for your reading pleasure and curiosity, we’ve outlined some of the basic properties that help determine an adhesive’s performance as tested by our material suppliers.
  • Initial Tack: The immediate holding power of the label adhesive on contact with a specific surface. If initial tack is low, it will have low adhesion, allowing the label to be removed cleanly. Adhesives with a low initial tack will build up adhesion over time (i.e. the difference between removable and repositionable). On the flipside, adhesives with high initial tack will have a stronger adhesion and bond to the container much more quickly.
  • Ultimate Adhesion: The maximum holding power the label will achieve as the adhesive fully bonds to the surface. How long it takes for an adhesive to gain ultimate adhesion varies and depends on factors like the adhesive’s stiffness, the roughness of the receiving surface and environmental conditions. Depending on those factors, it can take anywhere from 2 – 24 hours for ultimate adhesion to happen.
  • Shear Resistance: Simply put, label adhesives with a low shear are soft which allows them to flow into the surface they’re applied. They also have a higher initial tack, but can split apart under stress. A higher shear adhesive is more firm so it doesn’t flow as well into the surface, resulting in a lower initial tack and making it less likely to split apart under stress.
  • U.V. Resistance: If your labels will be exposed to ultraviolet (U.V.) light for extended periods, they may be susceptible to color changes or weakened adhesion. Select a U.V. resistant adhesive in cases where your labels will be exposed to U.V. light on your end, or if your labels will be exposed to U.V. light during the printing process (e.g. when a U.V. laminate or coating is applied to your labels) to minimize these effects.
  • Solvent Resistance: The adhesive’s capacity to withstand exposure to solvents like water, alcohol, petrochemical solvents, plasticizers, etc. without losing adhesion. The container contents, along with the environment where the product will be used, should be considered.
  • Mandrel Hold: How well the label adhesive holds up to a curved or tight radius surface. If an adhesive has a good mandrel hold, it will be harder for the label’s edges to lift up, also known as “flagging.”
  • Cold Flow: Temperature is an essential consideration with adhesives. Cold flow refers to the adhesive’s ability to bond (or “flow”) to a container at below normal temperatures. “Cold temperature” and “all temperature” adhesives will work best when the label is applied in cold environments.
  • Minimum Application Temperature: When an adhesive isn’t designed for cold temperatures, it will stiffen and lose its adhesive strength as the temperature decreases. Most adhesives have a minimum application temperature of 40-50 °F before they crystallize and become solid. Cold temperature adhesives can work in temperatures as low as -20 °F.
  • Service Temperature Range: The temperature range the adhesive can function in after the label has been applied and built up to its ultimate adhesion. Most pressure sensitive adhesives have a range of -65 °F to 200 °F with a paper label stock, or up to 300 °F with a film label stock.

Label Adhesive Guide Part 2: Performance and Selection

Now that you have a framework for how label adhesives work, the next part of our guide covers performance factors. Adhesive testing on the container you have chosen is extremely important for more complex labeling jobs to ensure you don’t end up wasting time and resources on labels that don’t stick properly. Whether you have a lot of technical requirements to consider or just want to make sure you’ve picked the right material, part two of our label adhesive guide will help answer questions you may have on label adhesives and container compatibility.
We also have a quick reference guide, Surefire Tips for Selecting a Label Adhesive, to help you find the right adhesive for your labeling project.
Posted 
Consolidated Label Co

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