Adhesive, also known as glue, cement, mucilage, or paste, is any non-metallic substance applied to one or both surfaces of two separate items that binds them together and resists their separation.
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. Then the stamp is affixed to the face or address-side of any item of mail—an envelope or other postal cover —which they wish to send. The item is then processed by the postal system, where a postmark or cancellation mark—in modern usage indicating date and point of origin of mailing—is applied to the stamp and its left and right sides to prevent its reuse. Next the item is delivered to its addressee.
A postmark is a postal marking made on an envelope, parcel, postcard or the like, indicating the place, date and time that the item was delivered into the care of a postal service, or sometimes indicating where and when received or in transit. Modern postmarks are often applied simultaneously with the cancellation or killer that marks postage stamps as having been used. Sometimes a postmark alone is used to cancel stamps, and the two terms are often used interchangeably. Postmarks may be applied by handstamp or machine, using methods such as rollers or inkjets, while digital postmarks are a recent innovation.
An envelope is a common packaging item, usually made of thin, flat material. It is designed to contain a flat object, such as a letter or card.
A cancellation is a postal marking applied on a postage stamp or postal stationery to deface the stamp and to prevent its reuse. Cancellations come in a huge variety of designs, shapes, sizes, and colors. Modern cancellations commonly include the date and post office location where the stamps were mailed, in addition to lines or bars designed to cover the stamp itself. The term "postmark" refers specifically to the part that contains the date and posting location, but the term is often used interchangeably with "cancellation" as it may serve that purpose. The portion of a cancellation that is designed to deface the stamp and does not contain writing is also called the "obliteration" or killer. Some stamps are issued pre-cancelled with a printed or stamped cancellation and do not need to have a cancellation added. Cancellations can affect the value of stamps to collectors, positively or negatively. Cancellations of some countries have been extensively studied by philatelists, and many stamp collectors and postal history collectors collect cancellations in addition to the stamps themselves.
For postage stamps, separation is the means by which individual stamps are made easily detachable from each other.
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.
Indian postal systems for efficient military and governmental communications had developed long before the arrival of Europeans. When the Portuguese, Dutch, French, Danish and British conquered the Marathas who had already defeated the Mughals, their postal systems existed alongside those of many somewhat independent states. The British East India Company gradually annexed the other powers on the sub-continent and brought into existence a British administrative system over most of modern-day India, with a need to establish and maintain both official and commercial mail systems.
An adhesive label or sticky label is a small piece of paper designed to be affixed to any surface, typically by the action of removing a layer of adhesive on the front or back of the label. The term adhesive refers to a sticky substance, while something that is self-adhesive implies that it will stick without wetting or the application of glue to the product.
A label is a piece of paper, plastic film, cloth, metal, or other material affixed to a container or product, on which is written or printed information or symbols about the product or item. Information printed directly on a container or article can also be considered labelling.
Avery Dennison Corporation is a multinational manufacturer and distributor of pressure-sensitive adhesive materials, apparel branding labels and tags, RFID inlays, and specialty medical products. The company is a member of the Fortune 500 and is headquartered in Mentor, Ohio.
Limonene is a colorless liquid aliphatic hydrocarbon classified as a cyclic monoterpene, and is the major component in the volatile oil of citrus fruit peels. The (+)-isomer, occurring more commonly in nature as the fragrance of oranges, is a flavoring agent in food manufacturing. It is also used in chemical synthesis as a precursor to carvone and as a renewables-based solvent in cleaning products. The less common (-)-isomer has a piny, turpentine-like odor, and is found in the edible parts of such plants as caraway, dill, and bergamot orange plants.
The Machin series of postage stamps was the main definitive stamp series in the United Kingdom for most of the reign of Elizabeth II, from 1967 until her death in 2022. Introduced on 5 June 1967, it was the second series of her reign, replacing the Wilding series. The last issue was on 4 April 2022, four months before the Queen's death on 8 September.
Pressure-sensitive 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, sticky note pads, automobile trim, and a wide variety of other products.
Adhesive tape is one of many varieties of backing materials coated with an adhesive. Several types of adhesives can be used.
Deinking is the industrial process of removing printing ink from paperfibers of recycled paper to make deinked pulp.
The beginnings of the postal history of Tonga can be traced to the Wesleyan missionaries, who landed in the islands in 1826, and sent regular communications back to London and Sydney from the day of their arrival. The Tongan Post Office was established in 1887, but even before then postage stamps featuring the image of King George Tupou I were produced in New Zealand.
Pressure-sensitive tape or pressure-sensitive adhesive tape is an adhesive tape that will stick with application of pressure, without the need for a solvent or heat for activation. It is known also in various countries as self-stick tape, sticky tape, or just adhesive tape and tape, as well as genericized trademarks, such as Sellotape, Durex (tape), Scotch tape, etc.
The chemistry of pressure-sensitive adhesives describes the chemical science associated with pressure-sensitive adhesives (PSA). PSA tapes and labels have become an important part of everyday life. These rely on adhesive material affixed to a backing such as paper or plastic film.
Adhesive remover is a substance intended to break down and remove glue and its remnants from surfaces.
