Nitto-denko Corporation

Masaaki Arakawa

Teiji Sakashita

Katsumi Hori

Naomitu Tanaka

Makoto Takahashi

Kazuhisa Maeda

Takaaki Moriyama

Kazumasa Sibata

Hidehiko Murata

Kazuo Suenaga

Shinsuke Ikishima

Kohei Takeda

Shou Uchida

Kazumasa Shibata

Masayuki Mizohata

Kenitirou Arakawa

Yoshiaki Makihara

Provided is a stretchable laminate which has a sufficient holding ability in the case of being stretched to be bonded onto another material and is excellent in feeling of touch. Also provided is an article including such stretchable laminate. The stretchable laminate of the present invention is a stretchable laminate, including: an elastomer layer; and a non-woven fabric layer arranged on at least one side of the elastomer layer, the stretchable laminate including an elastic lane portion and a rigid lane portion, the rigid lane portion requiring a strength of from 1 N/20 mm to 7 N/20 mm for obtaining a 5% deformation amount.

Elastic laminate and article containing same

A re-peeling pressure-sensitive adhesive or a re-peeling pressure-sensitive adhesive tape satisfying four conditions, besides (3) and (4), (1) and (2) or (1') and (2'): (1) the average releasing force in each releasing rate in the case of releasing at a releasing rate of from 10 to 100 meters/minute is from 50 to 1,000 g/25 mm, (2) the difference between the maximum value and the minimum value of the releasing force of the releasing chart pattern obtained by the release in (1) is not larger than 2/3 of the average releasing force or not larger than 500 g/25 mm, (1') the average releasing force in each releasing rate in the case of releasing at a releasing rate of from 1 meter/minute to 50 meters/minute is from 100 g/25 mm to 1,000 g/25 mm, (2') in the relation between the releasing force and the releasing rate after adhering to an adherend and preserving, the peak of the releasing force does not exist in the range of the releasing rate of not higher than 50 meters/minute, (3) the rolling initial tacking force is from 30 to 800 g/25 mm, and (4) the retentive force is at least 15 minutes under a load of 500 g. The pressure-sensitive adhesive and pressure-sensitive adhesive tape can be repeatedly adhered to or peeled from an adherend such as a paper diaper without breaking the adherend.

Re-peeling pressure-sensitive adhesive tape or pressure-sensitive

A separator or a packaging material is provided, comprising a thermoplastic plastic film at least one surface of which is a matte surface or an embossed surface having a surface roughness (Ra) of not larger than 1/2 of the thickness of the film. The thermoplastic film may have a release treatment layer on the whole or part of a surface. The separator or packaging material is useful as a separator for pressure-sensitive adhesive articles and disposable articles or as a packaging material for packing foods, pressure-sensitive adhesive articles and sanitary articles. In particular, the separator is suitably used as a separator for a disposable diaper and a sanitary napkin, and also the packaging material is suitably used as a package for a sanitary napkin.

Separator or packaging material having a matte or embossed surface

Disclosed are an expandable fixing tape comprising a base material composed of an expandable portion and a substantially non-stretchable portion, and a fixing means provided on at least one non-stretchable portion which is present at one end of the base material, wherein the expandable portion exhibits a load of not more than 5.0 kg/25 mm at 200% expanding and a permanent set of not less than 30% under the condition of 200% expanding, and the substantially non-stretchable portion has a ductility of less than twice under a load of not more than 0.5 kg/25 mm and a base material composed of an expandable portion, which is a thin layer portion having a thin thickness, at the central portion in the lengthwise direction and substantially non-stretchable portions, which are thick layer portions having a thick thickness, at both the end portions, a fixing means provided on at least one non-stretchable portion which is present at one end of the base material, wherein the expandable portion can be expanded to the length of at least three times under a load of 1.5 kg/25 mm and has a permanent set of at least 30% under the condition of 200% expanding, and the thickness of the expandable portion is not more than 90% of the thickness of the non-stretchable portion. These tapes can be easily expanded by a weak force at use and are very practical and easily usable, and are suitably used for packaging bags, boxes, etc. or for treating sanitary articles used.

Expandable fixing tape

A freely peelable release part structure is disclosed. The tape or a like part associated with the structure is difficult to separate when it should be kept fixed. On the other hand, noise-free peeling thereof is easy when it should be peeled away. In particular, a release part structure useful for the fastening of diapers is provided. It contains a structure of a release part whose interfacial boundary is constituted by a pressure-sensitive adhesive layer (4) and a silicone-based release layer (2), characterized in that the adhesive layer comprises a tacky substance containing a rubber as a major component and the release layer comprises a silicone-based release agent containing a three-dimensional structure organopolysiloxane in an amount of 1-80% by weight.

Paper diaper release part structure having an interfacial boundary

A sheet-form hook capable of hooking to a material to be hooked, comprising a sheet-form substrate having thereon at least one projected portion formed by bending at least one piece notched in the substrate to at least one surface side of the substrate, the height of the projected portion from the surface of the substrate being at least 0.3 mm, and a fastening system using the sheet-form hook. The sheet-form hook can be utilized in the field of fastening systems in place of pressure-sensitive adhesive tapes and has a high resistance to staining, which is a weak point of a pressure-sensitive adhesive tape.

Sheet-form hook and fastening system using it

A releasing part structure having a boundary component which is constituted by a pressure-sensitive adhesive layer and a long chain alkyl type or silicone type releasing agent layer, wherein said pressure-sensitive adhesive layer comprises a pressure-sensitive adhesive composition comprising a rubber-based or acrylic pressure-sensitive adhesive, and the releasing part structure is constituted such that when the pressure-sensitive adhesive layer is released from the releasing agent layer, the sound pressure level in releasing the pressure-sensitive adhesive layer from the releasing agent layer at a releasing speed of at least 1.times.10.sup.2 mm/minute is 80 dB or less.

Structure of releasing part

A Z-shape pressure-sensitive adhesive tape folded into a Z-shape and composed of an (a) portion, a (b) portion, and a (c) portion, wherein a releasing treatment layer is formed on the outside surface of the (a) portion of the Z-shape tape and the surface of the (b) portion continuing the (a) portion at an area of not more than 50% of the total surface thereof, a releasing treatment layer does not exist on the inside surface of the (c) portion, and a pressure-sensitive adhesive layer is formed on at least one surface of the inside surface of the (a) portion and the outside surface of the (c) portion.

Z-shape pressure-sensitive adhesive tapes, and fastening system and

Double-sided pressure-sensitive adhesive tape, laminated structure

The present invention provides a medical or sanitary adhesive tape comprising a support composed of a laminate structure of a first layer containing a thermoplastic elastomer and a second layer comprising a plastic film or nonwoven fabric, and an adhesive layer formed at least one surface of said support. The adhesive tape possesses advantages that is endowed with properties of both softness and elasticity, gentle to the skin and excellent in handling and processing characteristics.

Adhesive tapes for medical or sanitary use

A fixing tape is disclosed, which comprises a plastics film having a two- or three-layer construction comprising a plastics film layer and a polymer blend layer formed on at least one side of the plastics film layer, one side of the polymer blend layer facing away from the plastics film layer being a satin surface.

Fixing tape

The present invention provides a medical or sanitary adhesive tape with a support composed of a laminate structure having a first layer containing a thermoplastic elastomer and a second layer with a plastic film or nonwoven fabric, and an adhesive layer formed at least one surface of the support. The adhesive tape possesses both softness and elasticity, is gentle to the skin and exhibits excellent handling and processing characteristics.

A pressure-sensitive tape, a pressure-sensitive tape-fixing structure comprising a member made of a material having a rough surface, having fixed thereto the pressure-sensitive tape, and a roll of the pressure-sensitive tape are disclosed, the pressure-sensitive tape comprising a pressure-sensitive tape comprising a tape substrate, a first pressure-sensitive adhesive area provided on one side of the tape substrate in a tape substrate part which is close to one end of the tape substrate, and a second pressure-sensitive adhesive area provided on one side of the tape substrate in a tape substrate part which is close to the other end of the tape substrate, wherein either or both of said first pressure-sensitive adhesive area and said second pressure-sensitive adhesive area have a strongly adhesive area at an end part thereof to which an external peeling force is to be applied first, and said strongly adhesive area has a peel strength higher than that of the other part of the pressure-sensitive adhesive area.

Pressure-sensitive tape, pressure-sensitive tape-fixing structure, and

A plastics film having a two- or three-layer construction comprising a plastics film layer and a polymer blend layer formed on at least one side of the plastics film layer, one side of the polymer blend layer facing away from the plastics film layer being a satin surface.

Growing community of inventors

Osaka, Japan

Masaaki Arakawa