Methods include at least one sequential stretching step between circular or spiralized grooved rollers and the sequential stretching is performed according to at least one of six aspects of the invention.

Methods include at least one sequential stretching step between circular or spiralized grooved rollers and the sequential stretching is performed according to at least one of six aspects of the invention.

Microporous breathable films include a polyolefin and an inorganic filler dispersed in the polyolefin. Methods for forming polymeric films and articles of manufacture prepared therefrom are described.

Microporous breathable films include a polyolefin and an inorganic filler dispersed in the polyolefin. Methods for forming polymeric films and articles of manufacture prepared therefrom are described.

Absorbent members and methods of making the same are disclosed. In one embodiment, the absorbent member is a unitary absorbent fibrous web having a density profile through its thickness. In one embodiment, the density profile of the fibrous web is skewed toward one of the surfaces of the fibrous web. In such embodiments, the maximum density of the web may be located outside of the central 30% zone of the thickness of the web. In one embodiment, the method involves subjecting a precursor web to at least one cycle (or pass) through a mechanical deformation process. Typically, the method involves subjecting the precursor web to multiples cycles (or passes) through a mechanical deformation process.

A method and system for production of polymeric film. Radiant heat is applied in a controlled manner to the film to control the heating of the film so that desirable processing, such as annealing may be carried out.

A method and system for production of polymeric film. Radiant heat is applied in a controlled manner to the film to control the heating of the film so that desirable processing, such as annealing may be carried out.

A calendering and stretching plant for producing a stretched mono-material polymer film, including a flat extrusion head placed upstream of a calender, and a stretching unit placed downstream of the calender. The calender includes at least a pair of calendering rollers, including a first calendering roller, or casting roller, and a second calendering roller. or pressing roller. The flat extrusion head is placed at an operating distance X from the calender of between 100 mm and 1000 mm with reference thicknesses of between 500 micron and 50 microns. The greater the thickness, the smaller is the distance X and vice-versa. The casting roller and the pressing roller are provided with a controlled cooling/heating system.

Thermoplastic bags with phased deformation patterns are described. In particular, one or more implementations comprise thermoplastic bags with ring rolling, SELFing, or other deformation patterns phased or aligned relative to the sides of the bags. The phased deformation patterns can allow for reducing or eliminating deformation patterns in areas of the thermoplastic bag in which side seals or other seals are formed. Additionally or alternatively, the phased deformation patterns can provide for zones that provide differing properties (e.g., functional or aesthetic). Such zones can vary aligned along a width of the thermoplastic bag and optionally also vary along a height of the thermoplastic bag. The differing zones can provide the thermoplastic bags with phased deformations that provide leak prevention, liquid containment, and other benefits.

This method for producing a crystalline resin sheet includes press-rolling a sheet-shaped molten crystalline resin composition between a pair of pinch rolls. The crystalline resin composition includes a crystalline resin and a soluble nucleating agent. When the radius of the pair of pinch rolls is denoted by R, the average thickness of the sheet after press-rolling is denoted by L, and the sheet take-up speed in the pair of pinch rolls is denoted by V, an adjustment is performed so as to control the average elongational strain rate (R, L, V) in the sheet elongation direction represented by a specific formula to be more than 30 s.sup.1 but no more than 80 s.sup.1.