The present disclosure provides a shooting color-changing target paper and a manufacturing process thereof, comprising a substrate paper layer, a BOPP optical film layer which is provided above the substrate paper layer and a UV-printing ink layer which is provided above the BOPP optical film layer. The manufacturing process comprises: S1: preparing a substrate; S2: attaching a BOPP optical film; S3: placing the substrate on a printing device; S4: printing a target paper pattern; S5: curing with a UV lamp; and S6: packaging a finished product. According to the present disclosure, the BOPP optical film layer is attached to the substrate paper and then the target paper pattern is printed on the optical film through UV without repeated printing. By drying and curing the ink through the UV lamp, the produced target paper may be immediately packaged for use without ventilation and drying, resulting in a higher production efficiency.

A security document includes a first leaf having a first polymer substrate and a first reinforcement layer attached or formed with the first leaf. An outer leaf is attached to the first leaf along a fold line and is located between the first leaf and a cover. The first reinforcement layer extends along the first leaf at least partially along the fold line and at least partially away from the fold line on both sides of the fold line. The security document also has methods of manufacturing such a security document and a plurality of such security documents.

The invention relates to a stack of absorbent sheets, such as paper towels, toilet tissue, napkins, facial tissue, and the like. The stack has a binding element that is compressed and sewn with a first line of stitching disposed adjacent to the first edge of the bound stack, such as the top edge. The binding element may be free from adhesives. The line of stitches facilitate separation and removal of individual sheets and may alleviate the need for perforations or a line of weakness.

The invention relates to a method for making a structure with at least a first polymer layer and a second polymer layer, each made from a polycarbonate polymer based on bisphenol A, and in between the first polymer layer and the second polymer layer an intermediate layer being arranged, comprising the following steps: a) the intermediate layer is applied at least on a partial region of the first polymer layer, b) optionally the intermediate layer is dried, c) the first polymer layer is coated on the side, on which the intermediate layer is arranged, with a liquid preparation comprising a solvent or a mixture of solvents and a polycarbonate derivative based on a geminally disubstituted dihydroxydiphenyl cycloalkane, the preparation covering the intermediate layer, d) optionally a drying step is made after step c), e) after step c) or step d), the second polymer layer is placed on the first polymer layer, covering the intermediate layer, f) the first polymer layer and the second polymer layer are laminated with each other under pressure, at a temperature from 120 C. to 230 C. and for a defined time.

A method of manufacturing a security device is provided. The method comprises providing a substrate, the substrate having opposing first and second surfaces and a relief structure formed in the first surface of the substrate. A reflection enhancing layer is applied over the first surface of the substrate such that the reflection enhancing layer at least partially overlaps the relief structure and such that a first region of the first surface of the substrate does not have the reflection enhancing layer. An absorber layer is applied over the reflection enhancing layer such that the absorber layer at least partially overlaps the reflection enhancing layer and the relief structure where the reflection enhancing layer and the relief structure overlap each other, and such that the absorber layer at least partially overlaps the first region of the first surface of the substrate. An optical spacer layer is applied over the absorber layer such that the optical spacer layer at least partially overlaps the absorber layer, reflection enhancing layer and the relief structure where the absorber layer, reflection enhancing layer and the relief structure overlap each other, and such that the optical spacer layer at least partially overlaps the absorber layer and the first region where the absorber layer and the first region overlap each other. A reflector layer, formed of an at least partially reflective material, is applied over the optical spacer layer such that the reflector layer at least partially overlaps the optical spacer layer, the absorber layer, the reflection enhancing layer and the relief structure where the optical spacer layer, the absorber layer, the reflection enhancing layer and the relief structure overlap each other, and such that the reflector layer at least partially overlaps the optical spacer layer, the absorber layer and the first region where the optical spacer layer, the absorber layer and the first region overlap each other. The reflection enhancing layer and the absorber layer are formed of the same material. The absorber layer, the optical spacer layer and the reflector layer, together, form a colour-shifting structure. The reflection enhancing layer and the absorber layer, together, are substantially opaque or transmit less than 40% of incident light, preferably less than 20% of incident light.

The invention provides a laminated film with excellent bag rupture resistance, bending resistance, and gas barrier properties before and after bag producing processing or even when a bag produced from the laminated film is used for packaging of hard contents or subjected to a harsh wet-heat treatment such as retort sterilization. The laminated film comprises an inorganic thin film layer and a protective layer in this order on a base film layer, wherein the base film layer contains a resin composition containing 60% by mass or more of a polybutylene terephthalate and has a thermal shrinkage at 150 C. of 4.0% or less both in a longitudinal direction and a width direction of the base film layer and a dimensional change rate at 200 C. with respect to an original length of the film of 2% or less in a temperature-dimensional change curve in a longitudinal direction of the base film layer.

An expansion device, including: an irradiation unit configured to irradiate the thermally expandable sheet placed on a placing unit with light; a conveyance unit configured to reciprocably convey the irradiation unit between a first position and a second position; an exhaust fan fixed to a housing and configured to discharge air from the housing; and an air supply fan which is movable with the irradiation unit and configured to supply outside air into the housing, wherein the exhaust fan is provided at a position where air can be discharged from the second position side when the irradiation unit is returned from the first position to the second position after being moved from the second position toward the first position.

A white polyester film, having a specific weight of 0.6-1.2, being a three-layered structure containing two outer layers (A) having a combined thickness taking up 2% to 30% of an overall thickness of the film and a middle layer (B), and having air-bubble cells in both the outer layers (A) and the middle layer (B), has the outer layers (A) formed from a polyester resin and inorganic particles; and has the middle layer (B) having a heat distortion temperature above 120 C. and a melt flow index (MI) of 0.2-1 g/10 min (at 230 C., with a load of 2.16 kg) via crosslinking modified with 0.1-3 PHR of phrperoxide, and inorganic particles.

The present invention provides a method of producing a decorative tissue product, while controlling tensile degradation in a predicable fashion. The foregoing properties may be achieved using differential depth embossing in conjunction with an embossing pattern having particular characteristics. The use of an engraved roll, such as an embossing roll, having protuberances of differing depths and patterns not only improves the properties and characteristics of the fibrous structure, but may also be used to impart a unique pattern that provides the product with a distinctive look and is appealing to consumers. Generally the unique pattern results from a first set of protuberances having a first height and defining a first pattern and a second set of embossing elements having a second height and defining a second pattern, where the first height is greater than the second height.

A hygienic thin-leaf paper includes a first sheet (10) including first embossed regions (30) in each of which first embossed protrusions (31) and first non-embossed protrusions (32) are included, the first sheet including first non-embossed regions (50) in each of which a first embossed protrusion (31) and a first non-embossed protrusion (32) are not included; and a second sheet (20) including second embossed regions (40) in each of which second embossed protrusions (41) and second non-embossed protrusions (42) are included, the second sheet including second non-embossed regions (60) in each of which a second embossed protrusion (41) and a second non-embossed protrusion (42) are not included. The first sheet (10) and the second sheet (20) are integrally laminated, the first embossed protrusions (31) include multiple first dotted embossed protrusions (31A) and multiple first linear embossed protrusions (31B), and the second embossed protrusions (41) include multiple second dotted embossed protrusions (41A) and multiple second linear embossed protrusions (41B). Each first non-embossed region (50) faces a given second linear embossed protrusion (41B), and each second non-embossed region (60) faces a given first linear embossed protrusion (31B).