Toray Industries, Inc.

Nanotheta Co., Ltd.

Mao Fujii

Motonori Hochi

Yuki Sekido

Shinji Takeoka

Takashi Kasahara

Atsushi Murata

Toru Arakane

Ichiro Itagaki

Shinya Ohtsubo

Yuya Ishizuka

Shuichi Shoji

Jun Mizuno

A laminate has better handling properties achieved when it is attached to an adherend and which allows the solubility irregularity of the water-soluble material layer to be suppressed. The laminate includes: a 10 to 500 nm thick biodegradable material layer containing an aliphatic polyester and a water-soluble material layer disposed on at least one side of the biodegradable material layer, in which the water-soluble material layer is constituted of a 1 to 20 &#x3bc;m thick first layer containing a water-soluble polymer (a), a 10 &#x3bc;m to 10 mm thick fabric structure containing a water-soluble polymer (b), and a 1 to 20 &#x3bc;m thick second layer containing a water-soluble polymer (c), which are layered in this order from the biodegradable material layer side.

Laminate

A polymer film has an average film thickness Talong a straight line D passing through the center of gravity of a two-dimensional projection such that the area of the polymer film is maximized, satisfies equation (a), the average value L of distances 1 from the center of gravity to edges satisfies equation (b), the Young's modulus E satisfies equation (c), and the thickness deviation &#x394; defined by equation (d) satisfies equation (e); and a dispersion liquid and an agglomerate using the same. (a) 10 nm&#x2264;T&#x2264;1000 nm, (b) 0.1 &#x3bc;m&#x2264;L&#x2264;500 &#x3bc;m, (c) 0.01 GPa&#x2264;E&#x2264;4.3 GPa, (d) &#x394;=1&#x2212;T/T, (e) 0.346E&#xd7;10&#x2212;1.499&#x3c;&#x394;&#x3c;&#x2212;0.073E&#xd7;10+0.316.

Polymer film, and dispersion liquid and agglomerate using same

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Otsu, Japan

Mao Fujii