Abstract: The disclosure is directed to methods, systems, and apparatus for obtaining flame-perforated films which reduce or eliminate skewing of perforations in such films caused by thermal creep, whereby the film has perforations arranged to provide controlled tear characteristics, especially in both the lengthwise or machine direction (MD), and the crosswise or transverse direction (TD).

Abstract: A porous coated abrasive article comprises a porous backing having opposed first and second major surfaces, and a porous abrasive layer disposed on the first major surface. The porous backing comprises a porous oriented thermoplastic film. The porous backing has a land portion and openings extending between the first and second major surfaces. Each opening has a respective area at the first surface, wherein the openings have a number density of 5 to 4600 openings per square inch, and wherein the total area of the openings is from 1 to 90 area percent, based on the combined total areas of the land portion and the openings. The porous abrasive layer is disposed on the first major surface of the porous backing. The porous abrasive layer comprises abrasive particles retained in a binder and has an abrading surface opposite the porous backing, and the second major surface of the porous backing and the abrading surface are in fluid communication through at least some of the openings.

Abstract: A heat-treated non-oriented principal film including a cast (co)polymeric component that is not capable of thermally-induced self-forming. The heat-treated principal film has first and second opposed major faces and at least one modification zone on the first major face, each modification zone including a central portion and a rim portion surrounding the central portion. Each rim portion is surrounded by a land portion. An average thickness of each rim portion is greater than an average thickness of the land portion surrounding each modification zone, and an average thickness of each central portion is less than the average thickness of the land portion, or zero. The first major face of the heat-treated principal film may be positioned in contact with an oriented carrier film including a molecularly-oriented (co)polymer that exhibits a relaxation temperature (Tr). Methods of making such films and hand-tearable adhesive articles including such films are also disclosed.

Abstract: An oriented heat-treated principal film capable of thermally-induced self-forming, including one or more (co)polymers and exhibiting a relaxation temperature (Tr), the oriented heat-treated principal film having opposed first and second major faces, a land portion on the second major face and one or more modification zones on the second major face. A cross-linked (co)polymeric carrier layer is in contact with the first major face. Each modification zone includes a central closed portion and a rim portion surrounding the central closed portion and being surrounded by a land portion. An average thickness of each rim portion is greater than an average thickness of the land portion surrounding the central closed portion. An average thickness of each central closed portion is less than the average thickness of the land portion surrounding the central portion. Methods for making such films and adhesive articles comprising such films are also disclosed.

Abstract: An article and a method of making the article. The article includes a polymeric film having a first major surface and a second major surface; and an inkjet pattern of a low adhesion backsize coating composition deposited on the first major surface of the polymeric film; wherein the low adhesion backsize coating composition has a viscosity between 1 to 30 cp at a printing temperature between 20 to 70 degrees Celsius.

Abstract: An article and a method of making thereof. The article includes a polymeric film having a first major surface and a second major surface; a first plurality of domains of a first inkjet printing ink comprising a first low adhesion backsize coating composition deposited on the first major surface of the polymeric film; and a second plurality of domains of a second inkjet printing ink comprising a second low adhesion backsize coating composition deposited on the first major surface of the polymeric film; wherein the first and second low adhesion backsize coating composition has a viscosity between 1 to 30 cp at a printing temperature between 20 to 70 degrees Celsius; and wherein at least some of the first plurality of domains overlaps some of the second plurality of domains.

Abstract: An article and a method of making thereof. The article includes a polymeric film having a first major surface and a second major surface; and a plurality of discrete domains of an inkjet printing ink comprising a low adhesion backsize coating composition deposited on the first major surface of the polymeric film; wherein the low adhesion backsize coating composition has a viscosity between 1 to 30 cp at a printing temperature between 20 to 70 degrees Celsius.

Abstract: A membrane having a first outer surface having a plurality of pores in a skin layer and the plurality of pores having a closed perimeter in the skin layer. The membrane having a second outer surface and a porous supporting layer connecting the first outer surface to the second outer surface. The first outer surface of the membrane is a melt-fused skin layer from exposure to ultra-violet light.

Abstract: A method comprises exposing a particle coating disposed on a nonwoven fiber web comprising thermally-softenable fibers to pulsed electromagnetic radiation having at least one wavelength in the range of 200 nm to 1000 nm. The particle coating comprises distinct particles that are not chemically bonded to each other, and are not retained in a binder material other than the thermally-softenable fibers. Also disclosed are nonwoven articles comprising a thermally-softenable nonwoven fiber web having a particle coating disposed thereon. The particle coating comprises distinct particles that are not chemically bonded to each other and are not retained in a binder material other than the thermally-softenable nonwoven fiber web. The particle coating is at least 60 percent retained after a one minute immersion in isopropanol at 22° C.

Abstract: A method comprises exposing a particle coating disposed on a thermally-softenable film to a modulated source of electromagnetic radiation. The particle coating comprises distinct particles that are not covalently bonded to each other, and are not retained in a binder material other than the thermally-softenable film. Articles made by the method are also disclosed.

Abstract: A principal film comprising a first polymeric component wherein the principal film has: (1) first and second major faces; (2) a land portion wherein the principal film is capable of thermally-induced self-forming; and (3) one or more modification zones, each comprising a central portion and a rim portion surrounding the central portion and being surrounded by land portion, wherein the average thickness of each rim portion is greater than the average thickness of the land portion surrounding the modification zone, the average thickness of each central portion is less than the average thickness of the land portion surrounding the modification zone and is greater than zero. Also methods for making such films and articles comprising such films.

Abstract: A principal film comprising a first polymeric component wherein the principal film has: (1) first and second major faces; (2) a land portion wherein the principal film is capable of thermally-induced self- forming; and (3) one or more modification zones, each comprising a central portion and a rim portion surrounding the central portion and being surrounded by land portion, wherein the average thickness of each rim portion is greater than the average thickness of the land portion surrounding the modification zone, the average thickness of each central portion is less than the average thickness of the land portion surrounding the modification zone and is greater than zero. Also methods for making such films and articles comprising such films.

Abstract: A protective film includes a base layer and a wear layer, the wear layer comprising a UV cured hardcoat resin, and the UV cured hardcoat resin comprising surface modified silica nanoparticles. The protective film may comprise a pressure sensitive adhesive for adhesion to a floor. The protective film may be used, for example, as a protective floor finish.

Abstract: Methods of bonding polyester substrates together, comprising externally delivering thermal energy onto the bonding surfaces of the substrates and bringing the bonding surfaces into proximity with each other and bonding the substrates to each other.

Abstract: Methods of bonding polyester substrates together, comprising externally delivering thermal energy onto the bonding surfaces of the substrates and bringing the bonding surfaces into proximity with each other and bonding the substrates to each other.

Abstract: A monolithic multilayer article includes a thermoformable cellular polyester core layer and an oriented polyester skin layer on at least one major side of the polyester core layer.

Abstract: Provided are a tape, apparatus, and method that relate generally to a single layer adhesive which functions as a dicing tape and also as a die attach adhesive for dicing thinned wafers and subsequent die attach operations of the diced chips in semiconductor device fabrication. The tape, apparatus, and method include a backing with a surface modification that includes a pattern.

Abstract: An apparatus and methods for flame-perforating films. A preferred embodiment of the apparatus includes a frame, support surface attached to the frame, where the support surface includes a plurality of lowered portions, a burner attached to the frame opposite the support surface, where the burner supports a flame, and where the flame includes a flame tip opposite the burner and a film contacting the support surface, where the flame of the burner is in contact with the film, where the burner is positioned such that the distance between an unimpinged flame tip of the flame and the burner is at least one-third greater than the distance between the film and the burner.

Abstract: Provided are a tape, apparatus, and method that relate generally to a single layer adhesive which functions as a dicing tape and also as a die attach adhesive for dicing thinned wafers and subsequent die attach operations of the diced chips in semiconductor device fabrication. The tape, apparatus, and method include a backing with a surface modification that includes a pattern.

Abstract: Provided are a tape, apparatus, and method that relate generally to a single layer adhesive which functions as a dicing tape and also as a die attach adhesive for dicing thinned wafers and subsequent die attach operations of the diced chips in semiconductor device fabrication. The tape, apparatus, and method include a backing with a surface modification that includes a pattern.