Glue stick

Glue sticks are solid adhesives in twist or push-up tubes. Users can apply glue by holding the open tube to keep their fingers clean and rubbing the exposed stick against a surface.

Standard "Pritt Stick (International version)", "Pritt Stick (UK version)" and Extra Strong "Power Pritt"

Applications

Most glue sticks are designed to glue paper and card stock together, and are not as strong as some liquid-based variants. They can be used for craft and design, office use and at school. There are now permanent, washable, acid-free, non-toxic, solvent-free, and dyed (e.g. to see where the glue is being applied easier) varieties. These are most commonly used today.

Brands

In 1969 the German company Henkel invented the glue stick after studying the "twist-up ease" and convenience of lipstick applicators. The product was released under the Pritt Stick brand. By 1971 the Pritt Stick was being sold in 38 countries, by 2001 in 121.[1] The first solvent-free, multipurpose glue stick that could be used for other materials (e.g. wood, glass and some plastics) was the "PowerPritt", which was put on the market in 2003.[2] There is also a "Pritt X", launched in 2010.

Glue sticks are made under many brands and each may have different features to it. Various brands, such as Scotch, Elmer's, UHU, Kores, Giotto, UFO, Snopake, and Bostik U-Stick make glue sticks. Generic brands like M&G also manufacture glue sticks, utilising the twist action.

Sizes

Glue sticks can come in many sizes, the most common ones are 8g, 25g, 36g, and 40g.

Material

The most common glue stick nowadays are made of PVA or PVP.

Composition

Glue stick compositions are often proprietary and vary by manufacturer and type. One style contains the following ingredients: [3]

Name % content Purpose
Water 40% Evaporates to allow the glue to dry.
Acrylic polymer 40% Polymerizes to solidify dried glue.
Sodium stearate 10% This soap helps emulsify the acrylic, and lubricates the glue to apply smoothly.
Polyethylene glycol 3% Keeps dried glue somewhat moist and flexible.
Polyoxyethylene monooctylphhenyl ether 2% Emulsifier.
N-vinylpyrrolidone polymer 2% Polymerizes as the glue dries.
2-amino isobutanol 2% pH buffer, to neutralize acid.
Sodium hydroxide 0.3% Alkali, to keep stick pH above 10.

The reportable composition of a Pritt Stick is as follows:[4]

Name EC number CAS number % content Risk Statements
Caprolactam 203-313-2 105-60-2 1 - 5% Xn;R20/22 Xi;R36/37/38
Hydrogen peroxide solution ...% 231-765-0 7722-84-1 < 1% O;R8 C;R34
Sodium hydroxide 215-185-5 1310-73-2 < 1% C;R35

Other brands use, e.g., polyvinylpyrrolidone as the glue substance.

gollark: You probably want to revert that when the program *exits*.
gollark: > Which is exactly what they wanted here!Not necessarily, this actually does sound like a case where they might want each task to run in its own coroutines (or would, if their pathfinding did yields).
gollark: I mean, it's great for very simple situations where you want to run two things at once in the simplest case, but often projects want to run a listener "thread" and temporarily spawn tasks to handle them or something and this ends up being constantly reinvented.
gollark: > Thanks for that gollark :/.You're welcome! It would be useful if there was an API for this! Perhaps I could simplify some of my stuff and make a PR!
gollark: Parallel isn't great because you can't add an extra task after it starts.

See also

References
  1. "Pritt History". Archived from the original on 2013-03-18. Retrieved 2013-05-06.
  2. "Pegamento Pritt para manualidades". Retrieved 9 October 2017.
  3. MSDS: 3M Brand Re-stickable Glue Stick
  4. "Pritt Stick Safety Data Sheet" (PDF). Archived from the original (PDF) on 2016-03-04. Retrieved 2015-08-04.
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