An apparatus for producing a web of fibrous material includes a roll having incisions with a depth of 0.01-2.00 mm, a width of 0.01-2.00 mm, and a pitch 0.01-10.00 mm, and rotated at a peripheral velocity v.sub.1 equal to the velocity of an upstream apparatus unit; a belt stretched between transmission rollers that advances at a velocity v.sub.2 less than v.sub.1, wherein v.sub.1/v.sub.2 lies between 1.05 and 1.40; a presser roller rotating at a peripheral velocity v.sub.2, associated with a presser system acting to press the belt against the metal roll with a pressure of 1-200 kg per centimeter; and a system that feeds a sheet of pliable fibrous material between the belt and the roll, the belt having a longitudinal elongation of no more than 5%, dimensional stability along its entire length, a thickness of 1-10 cm, and a hardness 24-70° Shore A.

A fiber width adjusting apparatus includes a rotary body. The rotary body is configured to rotate around a rotation axis while interposing a sheet-shaped fiber, and cause, by frictional force generated between the rotary body and the sheet-shaped fiber, force to act on the sheet-shaped fiber while feeding the sheet-shaped fiber in a feed direction to vary a width and an orientation angle of the sheet-shaped fiber. The sheet-shaped fiber is impregnated with a resin or is before the impregnation with the resin. The rotation axis is parallel to a thickness direction of the sheet-shaped fiber. The force contains a component that is in a direction perpendicular to the thickness direction and to the feed direction.

A fiber width adjusting apparatus includes a rotary body. The rotary body is configured to rotate around a rotation axis while interposing a sheet-shaped fiber, and cause, by frictional force generated between the rotary body and the sheet-shaped fiber, force to act on the sheet-shaped fiber while feeding the sheet-shaped fiber in a feed direction to vary a width and an orientation angle of the sheet-shaped fiber. The sheet-shaped fiber is impregnated with a resin or is before the impregnation with the resin. The rotation axis is parallel to a thickness direction of the sheet-shaped fiber. The force contains a component that is in a direction perpendicular to the thickness direction and to the feed direction.

Provided is a method for producing a packing sheet with improved insulation and storage properties, which can greatly reduce logistics costs by minimizing a volume during storage and transportation and also greatly increase insulation.

Provided is a method for producing a packing sheet with improved insulation and storage properties, which can greatly reduce logistics costs by minimizing a volume during storage and transportation and also greatly increase insulation.

The present invention provides a production leveling apparatus for preventing warp of a light guide film, including: a fixed support mechanism, a sliding support mechanism, and a tension detection mechanism oppositely disposed, wherein the tension detection mechanism is disposed on a surface of the light guide film, and the fixed support mechanism is provided with a drive mechanism for driving the slidable support mechanism to slide. In the present invention, the drive mechanism mounted on the fixed support mechanism drives the slidable support mechanism to slide, so that the slidable support mechanism drives a guide shaft to move with respect to a rolling shaft; moreover, the tension detection mechanism performs tension detection on the light guide film, so that the surface tension of the light guide film is within a reasonable range; the cooperative usage of the infrared signal transmitter and the infrared signal receiver implements accurate horizontal detection on the light guide film; adjusting the height of a guide shaft by means of a lifting assembly further ensures that the light guide film is in a horizontal state and prevents the light guide film from being damaged and warped, so that the quality of the light guide film is ensured; the structure design is reasonable and simple, and the usage is convenient.

The present invention provides a production leveling apparatus for preventing warp of a light guide film, including: a fixed support mechanism, a sliding support mechanism, and a tension detection mechanism oppositely disposed, wherein the tension detection mechanism is disposed on a surface of the light guide film, and the fixed support mechanism is provided with a drive mechanism for driving the slidable support mechanism to slide. In the present invention, the drive mechanism mounted on the fixed support mechanism drives the slidable support mechanism to slide, so that the slidable support mechanism drives a guide shaft to move with respect to a rolling shaft; moreover, the tension detection mechanism performs tension detection on the light guide film, so that the surface tension of the light guide film is within a reasonable range; the cooperative usage of the infrared signal transmitter and the infrared signal receiver implements accurate horizontal detection on the light guide film; adjusting the height of a guide shaft by means of a lifting assembly further ensures that the light guide film is in a horizontal state and prevents the light guide film from being damaged and warped, so that the quality of the light guide film is ensured; the structure design is reasonable and simple, and the usage is convenient.

Transparent articles and methods of producing transparent articles are provided. The transparent article includes hydrophobic nanoparticles dispersed within poly(methyl methacrylate). The method of producing transparent articles includes pouring a transparent article precursor into a mold, the transparent article precursor comprising nanoparticles, a solvent, and a polymer, and the mold comprising a flat surface. The method also includes placing the mold into a container having an adjustable opening and allowing the solvent to evaporate from the transparent article precursor, thereby forming the transparent article over the flat surface of the mold. The method further includes flattening the transparent article, in which flattening the transparent article includes positioning a flat article on a first side of the transparent article, and compressing the transparent article between the flat surface and the flat article.

A protective film 10 of the present invention is used by being attached to a resin substrate 21 at the time of performing heat bending on the resin substrate 21 while heating the resin substrate 21. The protective film 10 includes a base material layer and a pressure sensitive adhesive layer which is positioned between the base material layer and the resin substrate 21 and is adhered to the resin substrate 21. The base material layer is formed of a laminate having a first layer which is positioned on the opposite side of the pressure sensitive adhesive layer, contains a thermoplastic resin, and has a melting point of 150 C. or higher and a second layer which is positioned on the pressure sensitive adhesive layer side, contains a thermoplastic resin, and has a melting point of lower than 120 C.

An apparatus for producing a web of fibrous material includes a roll having incisions with a depth of 0.01-2.00 mm, a width of 0.01-2.00 mm, and a pitch 0.01-10.00 mm, and rotated at a peripheral velocity v.sub.1 equal to the velocity of an upstream apparatus unit; a belt stretched between transmission rollers that advances at a velocity v.sub.2 less than v.sub.1, wherein v.sub.1/v.sub.2 lies between 1.05 and 1.40; a presser roller rotating at a peripheral velocity v.sub.2, associated with a presser system acting to press the belt against the metal roll with a pressure of 1-200 kg per centimeter; and a system that feeds a sheet of pliable fibrous material between the belt and the roll, the belt having a longitudinal elongation of no more than 5%, dimensional stability along its entire length, a thickness of 1-10 cm, and a hardness 24-70 Shore A.