摘要:
The present invention relates to a water-soluble film, which is a polyvinyl alcohol film comprising a polyvinyl alcohol resin (A), wherein the water-soluble film has a time for dissolution in water at 20° C. of not more than 60 seconds in terms of a film thickness of 76 μm, a b-value of the film is not more than 0.5, and a b-value of the film after leaving at 80° C. for 72 hr is not more than 1.0, preferably a water-soluble film comprising: a polyvinyl alcohol resin (A); at least two kinds of plasticizers (B); and a sulfite salt (C), wherein the content of the plasticizer (B) based on 100 parts by weight of the polyvinyl alcohol resin (A) is 5 to 50 parts by weight and the content ratio of the sulfite salt (C) to the plasticizer (B) (C/B: weight ratio) is more than 0.02 and not more than 0.35. According to the invention, there is provided a water-soluble film comprising a PVA resin as a main component, wherein the film is less likely to cause coloration at the time of film formation and coloration with time even upon contact with a chemical.
摘要:
A polyvinyl alcohol film which dissolves in water at 20° C. within 10 minutes and has an α/β ratio of not more than 10 wherein α is a storage modulus of the film at 20° C. in a dry atmosphere and β is a storage modulus of the film at 20° C. and 80% RH, and which has an excellent cold water solubility and an excellent durability such that the change in appearance of the film under high humidity is slight and the lowering of the cold water solubility is slight even if the film is stored for a long term.
摘要:
The present invention relates to a water-soluble film, which is a polyvinyl alcohol film comprising a polyvinyl alcohol resin (A), wherein the water-soluble film has a time for dissolution in water at 20° C. of not more than 60 seconds in terms of a film thickness of 76 μm, a b-value of the film is not more than 0.5, and a b-value of the film after leaving at 80° C. for 72 hr is not more than 1.0, preferably a water-soluble film comprising: a polyvinyl alcohol resin (A); at least two kinds of plasticizers (B); and a sulfite salt (C), wherein the content of the plasticizer (B) based on 100 parts by weight of the polyvinyl alcohol resin (A) is 5 to 50 parts by weight and the content ratio of the sulfite salt (C) to the plasticizer (B) (C/B: weight ratio) is more than 0.02 and not more than 0.35. According to the invention, there is provided a water-soluble film comprising a PVA resin as a main component, wherein the film is less likely to cause coloration at the time of film formation and coloration with time even upon contact with a chemical.
摘要:
To provide a game machine capable of recording a play score for a team constituted of self and partners in a portable recording medium separately for each team, and executing team-specific game processing by using recorded data regarding the team.Comprising a means for reading data from a first recording medium mounted on a mounting unit of the game machine by a first player, reading data from a second recording medium mounted by a second player, and determining them both to be a team when a recording medium-specific ID other than self's is recorded in at least one of the first and second recording media and the means for ascribing information about a competition score during a game progress or a competition result from cooperative competition of the team to the recording medium-specific ID of a cooperator, to record it in at least one recording medium of the first and second recording media as team score recording data of the team.
摘要:
To provide a game machine capable of recording a play score for a team constituted of self and partners in a portable recording medium separately for each team, and executing team-specific game processing by using recorded data regarding the team.Comprising a means for reading data from a first recording medium mounted on a mounting unit of the game machine by a first player, reading data from a second recording medium mounted by a second player, and determining them both to be a team when a recording medium-specific ID other than self's is recorded in at least one of the first and second recording media and the means for ascribing information about a competition score during a game progress or a competition result from cooperative competition of the team to the recording medium-specific ID of a cooperator, to record it in at least one recording medium of the first and second recording media as team score recording data of the team.
摘要:
The present invention provides a polyvinyl alcohol-based film for optical uses, which is excellent in stretching property and is used for producing a polarizing film excellent in polarization performance throughout the visible light wavelength range, particularly in the vicinity of the wavelength of 460 nm. The invention relates to a polyvinyl alcohol-based film for optical uses comprising a polyvinyl alcohol-based resin, wherein the polyvinyl alcohol-based resin is composed of only a polyvinyl alcohol-based resin (A) containing a 1,2-glycol bond at a side chain and the amount of the 1,2-glycol bond at a side chain is from 0.01 to 6% by mol, or a polyvinyl alcohol-based film for optical uses comprising a polyvinyl alcohol-based resin, wherein the polyvinyl alcohol-based resin includes a polyvinyl alcohol-based resin (A) containing a 1,2-glycol bond at a side chain and a polyvinyl alcohol-based resin (B) other than the polyvinyl alcohol-based resin (A) and satisfies the following expression (1): 0.01≦A×G/(A+B)≦6 (1) wherein A represents a content ratio (weight ratio) of the polyvinyl alcohol-based resin (A) based on a total amount of the polyvinyl alcohol-based resin (A) and the polyvinyl alcohol-based resin (B), B represents a content ratio (weight ratio) of the polyvinyl alcohol-based resin (B) based on the above total amount, and G represents an amount (% by mol) of the 1,2-glycol bond at a side chain.
摘要:
The present invention provides a polyvinyl alcohol-based film for optical uses, which is excellent in stretching property and is used for producing a polarizing film excellent in polarization performance throughout the visible light wavelength range, particularly in the vicinity of the wavelength of 460 nm. The invention relates to a polyvinyl alcohol-based film for optical uses comprising a polyvinyl alcohol-based resin, wherein the polyvinyl alcohol-based resin is composed of only a polyvinyl alcohol-based resin (A) containing a 1,2-glycol bond at a side chain and the amount of the 1,2-glycol bond at a side chain is from 0.01 to 6% by mol, or a polyvinyl alcohol-based film for optical uses comprising a polyvinyl alcohol-based resin, wherein the polyvinyl alcohol-based resin includes a polyvinyl alcohol-based resin (A) containing a 1,2-glycol bond at a side chain and a polyvinyl alcohol-based resin (B) other than the polyvinyl alcohol-based resin (A) and satisfies the following expression (1): 0.01≦A×G/(A+B)≦6 (1) wherein A represents a content ratio (weight ratio) of the polyvinyl alcohol-based resin (A) based on a total amount of the polyvinyl alcohol-based resin (A) and the polyvinyl alcohol-based resin (B), B represents a content ratio (weight ratio) of the polyvinyl alcohol-based resin (B) based on the above total amount, and G represents an amount (% by mol) of the 1,2-glycol bond at a side chain.