公开(公告)号：EP0246328A4

公开(公告)日：1989-01-19

申请号：EP86906464

申请日：1986-11-07

申请人： SHOWA DENKO KK

发明人： KOTANI TERUMITSU ,  TAKA TOSHIO ,  SAITO YOSHIMASA

IPC分类号： B29C43/24 ,  B29C43/52 ,  B29D7/01 ,  C08J5/18

CPC分类号： C08J5/18 ,  B29C43/24 ,  B29C43/52 ,  B29D7/01 ,  B29K2023/06 ,  B29K2995/0026 ,  B29K2995/0063 ,  C08J2323/06 ,  Y10T428/31

摘要： A 10- to 200 mum-thick, transparent high-density polyethylene film of 0.935 g/cm3 more in density having a haze value of less than 10%. It has a surface roughness of 0.001 to 0.15 mum, a C-axis orientation function (Fc) within the film of 0.10 to 0.50, and a difference in refractive index DELTAn between the amorphous portion and the crystalline portion within the film of 0.1000 to 0.1070. This film is produced by passing raw film through three heating rolls, i.e. a first heating roll (R1), a second heating roll (R2), and a third heating roll (R3) which are so heated that the temperature of R2 is higher than that of R1 and R3, and that the temperature of R2 is not higher than the m.p. of the film and not lower than 105oC, and cooling the film. The film thus obtained has an excellent transparency, well-balanced strength in a machine direction and a transverse direction, remarkably large impact strength, and high Young's modulus, and is suited for use as wrapping film for containers of cigarettes, caramels, chocolates and confectionery such as chewing gum or candy.

公开(公告)号：EP2374846A4

公开(公告)日：2012-06-20

申请号：EP09837596

申请日：2009-12-25

申请人： SHOWA DENKO KK

发明人： KOTANI TERUMITSU ,  TAKAHASHI KEI

IPC分类号： C08J9/12 ,  C08L3/02 ,  C08L23/02 ,  C08L67/04

CPC分类号： C08L3/02 ,  C08J9/0061 ,  C08J9/125 ,  C08J2201/03 ,  C08J2303/02 ,  C08J2400/30 ,  C08J2423/02 ,  C08J2467/04 ,  C08K3/26 ,  C08L3/08 ,  C08L99/00 ,  C08L2666/02 ,  C08L67/02 ,  C08L23/12

摘要： The foamable resin composition of the present invention is characterized by comprising starch, a synthetic resin, an alkaline compound, and water in an amount of 10 to 40 parts by weight with respect to 100 parts by weight of the starch, wherein the synthetic resin content is 0.02 to 10 wt%. The alkaline compound is preferably at least one selected from the group consisting of an alkali metal hydrogen carbonate, an alkali metal carbonate, an alkali earth metal hydrogen carbonate, and an alkali earth metal carbonate. The foam obtained by using the foamable resin composition of the present invention is free from a practical problem such as cushioning properties and the like, and has a cost advantage as an amount of a synthetic resin is extremely small.