Nitto-Denko Corporation

Katsumi Hori

Masaaki Arakawa

Teiji Sakashita

Makoto Takahashi

Kazuhisa Maeda

Naomitu Tanaka

Kazumasa Sibata

Yoshio Nakagawa

Kazuhiko Kinpara

Takio Itou

Hiroshi Nagami

Yoshiaki Makihara

Base film for pressure-sensitive adhesive tape and pressure-sensitive adhesive tape or sheet

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

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 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

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

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

Katsumi Hori