Asahi Kasei Life & Living Corporation

Asahi Kasei Kogyo Kabushiki Kaisha

Asahi Kasei Kabushiki Kaisha

Mitsuyoshi Itada

Masayuki Sukigara

Michihiro Yatsuzuka

Hisao Koike

Yoshiaki Hamada

Reiko Takahashi

Disuke Matsumura

A polylactic acid resin film or sheet which can be satisfactorily and stably formed and has excellent matte properties. It is a single-layer matte film or sheet which comprises a polylactic acid resin composition containing a particulate substance and at least one side of which has a surface gloss as measured in accordance with ASTM-D2457-70 (45&#xb0; gloss) of 60% or lower.

Matte film

The present invention provides a biaxially oriented film of a polylactic acid resin that is suitable for films for bags and packaging films for various windows, particularly films for outlook window envelopes. The film is biodegradable and, as films for outlook window envelopes, is superior in the coating adaptability for an antistatic agent, a lubricant and an antiblocking agent or the like and in the high-speed cutting property. The present invention discloses a biaxially oriented film of a polylactic acid resin comprising not less than 50% by weight of a polylactic acid resin, which has a storage modulus E'at 80&#xb0; C. within the range from 10 MPa to 3,000 MPa, as determined by the test method for temperature dependency of dynamic viscoelasticity, in accordance with JIS K7198 (method A); a heat shrinkage of not higher than 10%, upon heating at 80&#xb0; C. for 10 seconds; and a tear strength in the width direction (TD direction) of the film of 10 to 200 mN, as determined in accordance with JIS K7128 (method B).

Biaxially oriented polylactic acid-based resin films

Adhesive wrapping film

Cold-stretched products comprising a propylene-based resin composition obtained by mixing (A) a polymer consisting mainly of propylene units, in a proportion of not more than 92% by weight and not less than 50% by weight, (B) a polymer consisting mainly of butene-1 units or an ethylene-.alpha.-olefin copolymer having a softening point of 95.degree. C. or lower, in a proportion of not more than 47% by weight and not less than 5% by weight, (C) a tackifier in a proportion of not more than 25% by weight and not less than 3% by weight, the sum of the proportions being 100% by weight; and a process for producing said cold-stretched products.

Cold-stretched products comprising a propylene-based resin composition

Growing community of inventors

Suzuka, Japan

Mitsuyoshi Itada