A primary object of the present invention is to provide a polarizing plate excellent in durability. A polarizing plate (100) according to an embodiment of the present invention includes: a polarizer (10); and a protective film (21 and 22) arranged on at least one side of the polarizer (10). The polarizing plate (100) has a dimensional change ratio of 0.2% or more in a transmission axis direction thereof when the polarizing plate (100) cut into a size measuring 100 mm by 100 mm is bonded to a glass plate with a pressure-sensitive adhesive and the following operation is repeated 100 times: the polarizing plate (100) bonded to the glass plate is left to stand under an atmosphere at 40 C. for 30 minutes and then left to stand under an atmosphere at 85 C. for 30 minutes.

Disclosed herein are plaster boards that include first and second layers of hardened plaster material, a liner attached to the first layer of hardened plaster material, and a first material (e.g., a polymer material such as a viscoelastic polymer) adhered between the liner and the second layer of hardened plaster material. The liner includes one or more structurally weakened regions each extending substantially from a first edge to a second opposing edge of the plaster board. The structurally weakened regions of the liner may facilitate creation of a fissure that propagates substantially within a plane within the plaster board. Methods for making the plaster boards may involve drying wet plaster material while it is in contact with a liner having structurally weakened regions, processing a liner to form its structurally weakened regions while in contact with wet plaster material, or processing a liner to form its structurally weakened regions while in contact with hardened plaster material.

A primary object of the present invention is to provide a polarizing plate excellent in durability. A polarizing plate (100) according to an embodiment of the present invention includes: a polarizer (10); and a protective film (21 and 22) arranged on at least one side of the polarizer (10). The polarizing plate (100) has a dimensional change ratio of 0.2% or more in a transmission axis direction thereof when the polarizing plate (100) cut into a size measuring 100 mm by 100 mm is bonded to a glass plate with a pressure-sensitive adhesive and the following operation is repeated 100 times: the polarizing plate (100) bonded to the glass plate is left to stand under an atmosphere at 40 C. for 30 minutes and then left to stand under an atmosphere at 85 C. for 30 minutes.

There is provided a polarizer excellent in heat resistance. A polarizer according to an embodiment of the present invention includes a resin film containing iodine, wherein an end portion of the resin film has formed therein a high-concentration portion having a concentration of a substance that forms a counter ion of iodine higher than that of another portion.

The present disclosure relates to a packaging material comprising a core material layer having an area radially extending from an edge of a hole in said core material layer, wherein said area has a linearly or non-linearly decreasing core material layer thickness towards the edge of the hole. The disclosure further relates to a method for production of such a packaging material, and uses thereof.

Disclosed is a method of manufacturing an adhesive film including: preparing a transparent adhesion layer, disposing a film mask including a light-transmitting region and a light-shielding region on the transparent adhesion layer, applying ultraviolet (UV) light to the transparent adhesion layer through the film mask to precure an area of the transparent adhesion layer corresponding to the light-transmitting region of the film mask, and cutting the precured area of the transparent adhesion layer.

The present invention provides a producing method of a part with adhesive and a part with adhesive produced by the method. The producing method includes: a printing process of applying, by printing, the adhesive 20 which does not express adherence property on at least a portion of a surface forming the part from the base material 1; an ultraviolet irradiation process of irradiating, the base material 1 with ultraviolet 2 to make the adhesive 20 express adherence property; an release paper pasting process of pasting release paper on the base material 1; and an outward form pressing process of punching an outer form of the part. The adhesive is previously adhered to the part before it is punched out from the base material 1, and thus, the adhesive can be adhered to the plurality of parts by one positioning operation, and the productivity can be enhanced.

A winding device includes: a separation unit that separates sheets layered and simultaneously transported; a winding unit that winds one of the sheets separated by the separation unit; and a pressure contact unit that presses the one of the sheets wound by the winding unit from outside of the wound sheet toward the winding unit.

A sheet material (1) consisting of an mixture consisting essentially of: a) 10-50 percent by weight of random-oriented fibres, and; b) 90-50 percent by weight of a thermoplastic or thermoplastic elastomer; the weight percentages being based on the overall homogeneous mixture; and the sheet material having at room temperature a Shore D hardness of 40 to 85, preferably of 40 to 60, more preferably of 45 to 55. The sheet material (1) is used as a support in punching applications or as the top layer in punching belts (2).

The invention discloses a packaging bag and an apparatus and a method for manufacturing film material of the packaging bag, and a method of manufacturing the packaging bag. The processing of the portable portion is conducted by the apparatus for manufacturing film material, and the prepared film material is made into a packaging bag finally. In the technical solution of the invention, by adding a handle structure on the side portion of the big-sized packaging bag, the bag structure of the invention is easy to carry or move the packaging bag and the product within the packaging bag that is large in weight, structure, and size. The packaging bag of the present invention has a simple structure, which is convenient to use and process, improving the practicality and usability of the bag.