A paper bag is provided with a closure flap (14) such that a portion thereof protrudes from the opening edge (11a) of a paper bag body (11), that is opened to allow the removal of its content. The surface of the portion of the closure flap (14) that protrudes from the opening edge (11a) of the paper bag body (11) is coated with a non-water-soluble hot-melt adhesive (17). An underlining paper piece (20) is previously affixed, with a water-soluble adhesive (21), to the wall surface area where the ...

This invention pertains to security paper and methods of making such security paper. The invention comprises a light-colored base paper having a non-protection area of a first thickness, and a protection area of a second thickness on at least one major surface of the base paper wherein the first thickness is greater than the second thickness. The base paper comprises colorant whereby the protection area exhibits a translucence when viewed using transmitted light, and exhibits the colorant as a d...

This instant invention relates to a filter paper suitable for use at an elevated temperature using an adhesive composition comprising a heat curable water-based polyvinyl acetate thermosetting resin adhesives comprising, in addition to the resins noted, water-soluble methyl cellulose in an amount sufficient to form a non-elastic continuous film on the adhesive surface when exposed to curing temperatures.

The present invention is directed to an improved paper holder having minimal components and functioning by gravitational action to retain paper. Need for an elastic biasing member for biasing a holding member is eliminated.

A method and a color mixture for shading paper, and a shaded paper that comprises or consists of one or more layers made of the same or different pulps, which paper is intended to be used in connection with foodstuffs. The pulp or paper layer is treated with a color mixture of at least two optically cooperating pigments that are approved for foodstuffs, one of which is quinacridone red with the FDA registration details C.I. pigment violet 19, C.I. No. 73900 (Code of Federal Regulations, Food and...

A slider includes a rotary blade holding case and a guide member. A rotary blade bearing portion is provided on the rotary blade holding case. A shaft extends through a rotary blade while being clamped with a bearing member and a safety plate. After the shaft is coupled with the bearing portion, the guide member is coupled with the rotary blade holding case. Thereby, parts other than the shaft are adapted to be molded with a single material so as to reduce the manufacturing processes of the slid...

The invention relates to security paper and in particular to a method for the manufacture of security paper that is provided with high-quality watermarks. In particular such a method comprises forming a papermaking suspension comprising cellulosic fibers and polyvinyl alcohol fibers, which polyvinyl alcohol fibers are soluble in water at temperatures of from 95 to 100 degrees C, dewatering the papermaking suspension through an emboseed wire mesh or other embossed means, wherein the embossing cre...

The invention relates to an aqueous dispersion containing a cellulose-reactive sizing agent and an anionic hydrophobically modified cellulose-derivative, its preparation and use in the production of paper. The invention also relates to a substantially water-free composition containing a cellulose-reactive sizing agent and an anionic hydrophobicity modified cellulose-derivative, its preparation and use in the preparation of an aqueous dispersion cellulose-reactive sizing agent. The invention furt...

A paperboard material 101 is mainly composed of a paperboard having a weight of 200 to 450 g/m.sup.2, a density of 0.65 to 0.82 and a gas permeability of 50 to 200 sec. A first resin layer having liquid-impermeability and thermal resistance is formed entirely on the surface of the paperboard on the inner side of the receptacle, and a second resin layer having permeability to gas and liquid is formed entirely on the back surface of the paperboard. Radial score lines 117 are formed in the portion ...

A paper punch has an inner punch and an outer punch movably received with respect to each other. The outer punch has a first contour punch so as to be able to punch a hole in a piece of paper with the same contour as that of the first contour punch, and the inner punch has a second contour punch so as to punch a small hole in a piece of paper with the same contour as that of the second contour punch. Because the second contour punch moves first and the first and the second contour punches are pl...