Label pressure-sensitive

Labelling Pressure-sensitive solvent-based water-based hot-melts Indirect, other than direct for, e.g. items of fruit/vegetables... 

Applications and uses aerospace, flexible printed circuits, automotive, heaters, bar code labels, pressure-sensitive tape, electrical insulation, and safety. 

Laminating resins Nonwoven fibrous Pressure sensitive Pressure sensitive Gummed labels Pressure sensitive Pressure sensitive Films Polyolefins Pressure sensitive Pressure sensitive Glossy paper Polyamide heat sealing Magnetic tape... 

Two important parameters in the formulation of pressure sensitive adhesives are tack and hold, which is the ability to resist creep under deadload. As noted, butyl and polyisobutylene are inherently tacky polymers. This tack can be enhanced with a wide variety of resins and other tackifiers. The hold or cohesive strength is low compared to some other pressure sensitive adhesive polymers, such as natural rubber, but can be increased if required by (1) incorporation of high molecular weight PIB or natural rubber, (2) the choice of the other ingredients, particularly resins and fillers, and (3) the partial or preferential curing techniques noted previously. The poly isobutylene polymers are primarily used in label pressure sensitive adhesives and in certain tapes where high cohesive strength is not necessary. 

Adhesives. Acryhc emulsion and solution polymers form the basis of a variety of adhesive types. The principal use is in pressure-sensitive adhesives, where a film of a very low T (<—20 " C) acrylic polymer or copolymer is used on the adherent side of tapes, decals, and labels. Acrylics provide a good balance of tack and bond strength with exceptional color stabiUty and resistance to aging (201,202). AcryUcs also find use in numerous types of constmction adhesive formulations and as film-to-film laminating adhesives (qv). 

Pressure-Sensitive Tape and Label Surface Coating Operations... 

Pressure sensitive adhesives can be coated on a substrate such as a polyester or paper backing to make a tape or label, or on a release liner to make a transfer adhesive, or a special substrate to make a graphic film or retro-reflective sheeting product. In some cases, where precision placement of the PSA is required, one may also coat directly on the substrate using techniques such as screen-printing. 

Pressure sensitive labels and tapes for the consumer markets form a very significant portion of the PSA industry. Whereas the original products were rather simple in construction and use, today s products often perform unique functions that result from more sophisticated assembly of a label or tape product. Examples of these unique functions include the monitoring of food or drug storage conditions, or the ability to monitor the charge status of a battery. 

Besides the typical tape and label products discussed earlier, larger sheeting products are often applied using pressure sensitive adhesives. Examples of these sheeting products include ... 

Jagisch, F.C., Novel radial styrene-isoprene polymers for pressure sensitive adhesives. In Proceedings of the European Tape and Label Conference, Antwerp, Belgium, April 18, 1997. 

Release coatings are important components of pressure sensitive adhesive (PSA) products such as tapes and labels [1]. Release materials are coated onto the backside of PSA tape backings (often called low adhesion backsizes or LABs in this form) to provide the desired tape roll unwind force. They are also coated onto various substrates to form release liners for PSA products such as labels and transfer tapes. Typically the thickness of the release coating is less than 1 p,m, and often times less than 0.1 jLm. Release coatings can be thought of as the PSA delivery system, providing a controlled unwind or release force and protecting the adhesive from contamination and unintentional contact until it is applied. 

Thermoplastic block copolymers were used for pressure-sensitive and hot-melt rubber adhesives as from the middle sixties. These adhesives found application in packaging, disposable diapers, labels and tapes, among other industrial markets. The formulation of these adhesives generally includes an elastomer (generally containing styrene endblocks and either isoprene, butadiene or ethylene-butylene midblocks) and a tackifier (mainly a rosin derivative or hydrocarbon resin). 

For clear labels, which arc growing in demand, manufacturers have turned to off-line-produced pressure-sensitive labels, which the labeler purchases and applies to the bottle. However, this option is very expensive, primarily because of the cost of the release paper. The adhesives used for such processes are those used in conventional PSA label manufacturing, as discussed elsewhere in this volume. 

LABEL X-RAY FILM ID PRESSURE SENSITIVE ADHESIVE RADIOPAQUE 300S 6525008807257 PG 83 58 ... 

Labeler. Applies and imprints (pressure-sensitive) labels to moving containers, generally at the same speed and in the same direction of the flow of the product. 

Self-Adhesive or Pressure-Sensitive Labels. It is preferable to call these pressure-sensitive labels, as both the pregummed and heat-sensitive labels are self-adhesive (i.e., the adhesive is already there). They consist of a suitable label facing material (usually paper or polymer), the reverse side of which is coated with a permanently tacky adhesive that is in contact with a backing paper (occasionally plastic) that protects it prior to use. The backing paper is coated with a special release coating that permits the label to be removed easily. Labels may be provided on roll or sheet form both can have the label laid on that is, the unprinted area has been cut and removed. 

Pressure-sensitive labels can be applied to most materials (wood, plastic, metal, glass, paper, and board). As the adhesives are resin-based (plasticized thermoplastics), migration problems can occur when they are applied to certain plastics (e.g., PVC, LDPE). 

The integral label/leaflet, which is a prefolded leaflet attached to the front of a pressure-sensitive label, and for all practical purposes can be treated as a label. 

The other major uses of acrylic latexes are in textile finishing (e.g., stain and wrinkle resistance), adhesives, and floor polishes and waxes. Adhesives are used in many applications, including pressure-sensitive tapes, contact adhesives, and construction adhesives for carpeting and floor tiles. Peelable labels and stamps probably got their start with the Post-it note, invented by Spencer Silver and Art Fry at 3M company many years ago. 

Where bonding areas are large or there is a need for shape conformity between bonded parts Where the intention is to dismantle the bond later, the use of various labels, surgical and pressure-sensitive tapes, adhesives for positioning and locating parts, in lieu of jigs, prior to assembly by other means... 

Pressure-Sensitive Films Adhesives Labels, Stickers Decals Coating Services Laminating Bonding Systems... 

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