Oji Yuka Goseishi Co., Ltd.

Yupo Corporation

Oji-yuka Synthetic Paper Co., Ltd.

Akira Iwai

Akihiko Ohno

Takatoshi Nishizawa

Masaaki Yamanaka

Ichiro Ohkawachi

Yozo Ohba

Ayako Shibata

Minoru Kato

Moriyasu Sudo

This invention provides printing paper which comprises an aliphatic polyester resin utilizing a plant resource-derived biomass material, is excellent, for example, in traveling stability on a printing machine, material strength, reproduction of dots, print sharpness, and waterfastness and is suitable for use in applications where sheet offset printing is carried out, for example, commercial printing applications such as outdoor posters and maps, catalogs, pamphlets, and menues, and a label using the same. The printing paper is a film formed of an aliphatic polyester resin composition comprising 40 to 90% by weight of an aliphatic polyester resin (a) comprising a binary or higher material of aliphatic diol units represented by formula (I) and aliphatic dicarboxylic acid units represented by formula (II) and 60 to 10% by weight of an inorganic fine powder (b). The film has a Gurley stiffness of 50 to 3,000 mg, a surface area S, per projected area 4,292 &#x3bc;m, of the film surface of 5,000 to 50,000 &#x3bc;m, and a convex part volume V, per projected area 4,292 &#x3bc;m, of the film surface of 2,000 to 20,000 &#x3bc;m: &#x2014;O&#x2014;(CH)&#x2014;O&#x2014; . . . (I) wherein m is an integer of 2 to 10; and &#x2014;CO&#x2014;(CH)&#x2014;CO&#x2014; . . . (II) wherein n is an integer of 1 to 12.

Printing paper

A pressure-sensitive transfer delivery sticker slip is described, which comprises (1) a monoaxially-stretched multi-layer film having an opacity of not less than 80% (as determined according to JIS P-8138) and a tensile modulus of not less than 2.times.10.sup.4 kgf/cm.sup.2 in the stretching direction (JIS K-7127) obtained by monoaxially stretching a laminated film having a surface layer (B) comprising a resin composition comprising from 60 to 80% by weight of a finely divided inorganic powder (B.sub.2) incorporated in from 20 to 40% by weight of a crystalline polyolefin (B.sub.1) laminated on at least one side of a core layer (A) comprising as a base a resin composition comprising from 1 to 30% by weight of a finely divided inorganic powder (A.sub.2) incorporated in from 70 to 99% by weight of a crystalline polyolefin (A.sub.1) at a temperature of not higher than the melting point of said crystalline polyolefins (A.sub.1, B.sub.1) by a stretch ratio of from 3 to 10 in such a manner that fine isolated voids are formed in the various layers, (2) printing information on the surface of said surface layer (B) and (3) providing a carbon or non-carbon pressure-sensitive layer on the back layer of said monoaxially-stretched multi-layer film.

Pressure-sensitive transfer delivery sticker slip

A thermal transfer image-receiving sheet having (1) a support of (B) a base layer which is a biaxially stretched microporous film of a thermoplastic resin containing from 10 to 45% by weight of an inorganic fine powder and (A) a surface layer which is a biaxially stretched film of a thermoplastic resin having a three-dimensional center-plane average roughness (Ra) of not more than 0.5 .mu.m, surface layer (A) having a spatial average wavelength (.lambda.a), defined by the equation .lambda.a=2.pi.Ra/.DELTA.a, where Ra is the three-dimensional center-plane average roughness and S.DELTA.a is the three-dimensional average slope, of not more than 100 .mu.m and a gloss of not less than 93% as measured at 75.degree. according to JIS P-8142 and (2) an image-receiving layer provided on the surface of the surface layer (A). The image-receiving sheet provides a clear image having high density, high gloss, and reduced rough feeling even using reduced printing energy.

Thermal transfer image-receiving sheet

A thermal transfer image-receiving sheet comprising (1) a support comprising (a) a surface layer comprising a biaxially stretched film of a thermoplastic resin containing from 2 to 60% by weight of titanium dioxide fine powder and (b) a base layer comprising a biaxially stretched microporous film of a thermoplastic resin containing from 10 to 45% by weight of an inorganic fine powder and (2) an image-receiving layer provided on surface layer (a) of support (1), in which support (1) has a void volume of from 30 to 60% and a density of from 0.50 to 0.78 g/cm.sup.3, and surface layer (a) of support (1) has a center-line average roughness of not more than 0.5 .mu.m and a Bekk's smoothness of from 4,000 to 100,000 sec. The thermal transfer image-receiving sheet has an excellent cushioning effect due to the number of microvoids present in the support thereof and high sensitivity in a middle tone region owing to the titanium dioxide present in the surface layer of the support to provide a clear image having a high density even with reduced printing energy.

An air baggage tag readable by a bar code reader is composed of a recording layer, a substrate, a pressure sensitive adhesive layer, and release paper, wherein the substrate has a laminate structure composed of (A.sup.1) a fine void-containing stretched thermoplastic resin film and (A.sup.2) a substantially void-free uniaxially stretched thermoplastic resin film having a transverse Elmendorf tear strength of at least 80 g, the thickness of the uniaxially stretched thermoplastic resin film (A.sup.2) is from 10 to 60% of the total thickness of the substrate, and the recording layer is provided on the side of the stretched thermoplastic resin film (A.sup.1) opposite to the stretched thermoplastic resin film (A.sup.2) and has printed thereon a bar code. The baggage tag has high tear strength while exhibiting satisfactory printability and therefore, when attached to each piece of air baggage, is not easily torn apart even on being pulled.

Air baggage tag

An air baggage tag readable by a bar code reader is composed of a recording layer, a substrate, a self-adhesive layer, and release paper, wherein the substrate has a laminate structure composed of (A.sup.1) a fine void-containing stretched thermoplastic resin film and (A.sup.2) a substantially void-free uniaxially stretched thermoplastic resin film having a transverse Elmendorf tear strength of at least 80 g, the thickness of the uniaxially stretched thermoplastic resin film (A.sup.2) is from 10 to 60% of the total thickness of the substrate, and the recording layer is provided on the side of the stretched thermoplastic resin film (A.sup.1) opposite to the stretched thermoplastic resin film (A.sup.2) and has printed thereon a bar code. The baggage tag has high tear strength while exhibiting satisfactory printability and therefore, when attached to each piece of air baggage, is not easily torn apart even on being pulled.

A thermal transfer recording sheet comprising a support having thereon a thermal transfer image-receiving layer, said support comprising a thermoplastic resin film containing from 3 to 60% by weight of a petroleum resin, where the thermoplastic resin film is preferably a microvoid-containing film, and the thermal transfer recording sheet exhibits excellent surface smoothness and, in case of a microvoid-containing support, also exhibits excellent cushioning properties so that the recording sheet has improved contact with a thermal head to provide a transferred image rich in gradation and which does not curl even after thermal recording.

Thermal transfer recording sheet

A recording material comprising a thermosensitive recording layer (B) or a thermal dye transfer type image receiving layer (B') laminated on a surface layer (b) of a support (A), wherein the support (A) comprises the surface layer (b) comprising a uniaxially stretched thermoplastic resin film laminated onto a base layer (a), wherein the base layer (a) comprises a biaxially stretched film of a thermoplastic resin containing 10 to 45% by weight of an inorganic fine powder, and wherein said support (A) satisfies conditions (1) to (3):

Recording material

A support for a dye transfer type thermosensitive printing sheet is disclosed, which comprises a porous film base having a biaxially stretched film of a thermoplastic resin containing an inorganic fine powder having adhered thereon a thermoplastic resin film having a centerline-average roughness of not more than 0.5 .mu.m as a surface layer on which a dye transfer type thermosensitive printing layer is to be provided, said surface layer having a thickness of from 0.3 to 1.5 .mu.m and a Bekk's smoothness of from 2500 to 7000 seconds, and said support having an opacity of not less than 70%, a density of not more than 0.91 g/cm.sup.3, and a compression ratio of from 15 to 35% under a stress of 32 kg/cm.sup.2. A dye transfer type thermosensitive printing sheet using the support of the invention has excellent surface smoothness and exhibits considerable compressibility and, therefore, shows improved adhesion or contact with a printing head to form an image rich in gradation.

Support for dye transfer type thermosensitive printing sheet

A support for a thermosensitive recording material comprising a surface layer of a thermoplastic resin film having a center line average roughness of 0.6 .mu.m or less laminated on the surface of a porous film base material of a biaxially stretched film of a thermoplastic resin containing an inorganic fine powder, wherein the properties of said support meet the following conditions (a) to (c);

Support for thermosensitive recording

A process for producing synthetic label paper which comprises preparing a multi-layer film comprising a film of a thermoplastic resin containing an inorganic fine powder having provided on the back side thereof a layer of a heat-sealable resin having a melting point lower than that of said thermoplastic resin, embossing the heat-sealable resin layer, and stretching the embossed multi-layer film at a temperature of from the melting point of said heat-sealable resin to a temperature lower than the melting point of said thermoplastic resin. The label paper, when used for in-mold decorating of a container, gives a blister-free appearance to a container, causes no deformation of a container, and exhibits sufficient nerve for fitting to an inner wall of a mold.

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Ibaraki, Japan

Akira Iwai