Search results
Results from the WOW.Com Content Network
A self-adhesive stamp is a postage stamp with a pressure-sensitive adhesive that does not require moistening in order to adhere to paper. They are usually issued on a removable backing paper. Stamp collectors have criticized the format, because the rubber-based adhesive used tends to yellow the stamps progressively.
Postage stamp gum. In philately, gum is the substance applied to the back of a stamp to enable it to adhere to a letter or other mailed item. The term is generic, and applies both to traditional types such as gum arabic and to synthetic modern formulations. Gum is a matter of high importance in philately.
Pressure-sensitive adhesive. Pressure-sensitive adhesive (PSA, self-adhesive, self-stick adhesive) is a type of nonreactive adhesive which forms a bond when pressure is applied to bond the adhesive with a surface. No solvent, water, or heat is needed to activate the adhesive. It is used in pressure-sensitive tapes, labels, glue dots, stickers ...
Except for rare or very old stamps average stamps are not collected or sold except as space-fillers or reference copies. Heavy cancellations which obliterate the design can also be considered. Poor is a stamp which is heavily canceled, soiled, cut to shape. Only great rarities such as the British Guiana 1c magenta are collected in poor condition.
The Federal Duck Stamp, formally known as the Migratory Bird Hunting and Conservation Stamp, is an adhesive stamp issued by the United States federal government that must be purchased prior to hunting for migratory waterfowl such as ducks and geese. [1] It is also used to gain entrance to National Wildlife Refuges that normally charge for ...
For postage stamps, separation is the means by which individual stamps are made easily detachable from each other. Methods of separation include: perforation: cutting rows and columns of small holes. rouletting: small horizontal and vertical cuts. diecutting: cut paper to shape using a metal die—used for self-adhesive stamps.
3. Denomination. 4. Country name. A postage stamp is a small piece of paper issued by a post office, postal administration, or other authorized vendors to customers who pay postage (the cost involved in moving, insuring, or registering mail). Then the stamp is affixed to the face or address-side of any item of mail —an envelope or other ...
Security printing. Security printing is the field of the printing industry that deals with the printing of items such as banknotes, cheques, passports, tamper-evident labels, security tapes, product authentication, stock certificates, postage stamps, and identity cards. The main goal of security printing is to prevent forgery, tampering, or ...