Toyo Boseki Kabushiki Kaisha

Nippon Magphane Kabushiki Kaisha

Other

Toyobo Co., Ltd.

Toyo Boseki Kabushiki Kaisha T/a Toyobo Co., Ltd.

Yujiro Matsuyama

Katsuaki Kuze

Osamu Makimura

Yoshio Araki

Yasuhiro Nishino

Chisato Nonomura

Masahiro Kobayashi

Sakashi Kamata

Tsuyoshi Hongo

Kiyoshi Negishi

Kozo Maeda

Tsutomu Isaka

Tadashi Okudaira

Yasuo Yoshinaka

Tsuyoshi Matsunaga

Toshihiro Yamashita

Tadashi Kanno

Koichiro Nakamura

Hiromu Ishida

Takeshi Ota

Yasushi Kamihigashi

Kenji Kubota

A bridge of shock-absorbing construction is disclosed, which includes horizontal members arranged in series, vertical members supporting the horizontal members, and connectors for connecting the adjacent horizontal members or for connecting the horizontal member and the vertical member, wherein shock absorbers formed from a material with an elastic modulus in flexure over 200 kgf/cm,and each having a wall structure in a shock-loading direction are disposed on the connectors or at the points of contact between the horizontal members or between the horizontal member and the vertical member.

Bridge of shock-absorbing construction

Impact absorber made of resin

A thermo-shrinkable polyester film of this invention is obtained from a composition that comprises acid components including terephthalic acid and glycol components including ethyleneglycol. The polyester film has a heat-shrinkage ratio of 30% or more in a certain direction at 100.degree. C., and a shrinkage ratio of 5% or more at the point of intersection of a curve showing the internal shrinkage stress of the film and a curve showing the tensile stress of the film.

Thermo-shrinkable polyester film

An oriented polyester film having at least one surface being roughened by containing inactive particles and three-dimensional surface roughness exponents of the said roughened surface are within ranges simultaneously satisfying the following relationships (I) to (III), while the number of coarse projections is in excess of the fourth grade:

Oriented polyester film

An oriented polyester film comprising ethylene terephthalate as the major repeating units, which comprises 0.01 to 1.0% by weight of silica particles and/or titanium dioxide particles having each an average particle size of 0.01 to 0.5.mu. and 0.005 to 1.0% by weight of calcium carbonate having an average particle size of 0.01 to 0.5.mu., which provides an oriented polyester film for the base film of video tape which has a flatness on the surface and has excellent slipperiness, abrasion resistance and running characteristics as well as excellent magnetic transducer characteristics.

An oriented polyester film comprising ethylene terephthalate as the major repeating unit, which comprises particles of kaolinite and calcium carbonate uniformly dispersed therein, said kaolinite and said calcium carbonate having each an average particle size of 0.05 to 0.8 micron and being contained in such amounts as satisfying the following equations:

Oriented polyester film containing calcium carbonate and kaolinite

Growing community of inventors

Ohtsu, Japan

Yujiro Matsuyama