EP0338350A2
Expired / Lapsed
EP
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Dusting treatment agent, dusting-treated thermoplastic film, and method of dusting treatment for the film
Assignee: Asahi Kasei Corp
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Filing: 1989-04-07
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Granted: —
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Expires: 2009-04-07
Abstract
Abstract There are disclosed a dusting treatment agent for imparting inter-film lubricity to a film of a vinylidene chloride derivative resin which comprises a mixture of a component (A) a polyhydric alcohol, a component (B) an amphoteric or nonionic surface active agent, a component (C) a vegetable oil and a component (D) an inorganic powder; a vinylidene chloride derivative resin film having an improved openability because of being treated with said agent; and a method of treating said film with said agent.
Inventors
- 👤 Hiroshi Tamaru
- 👤 Hiroyuki Miyazaki
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 00:50
CPC Classifications
C; C10; C10M; C10M169/00; C10M169/04; C10M169/045; B; B29; B29C; B29C37/00; B29C37/0067; B29C48/00; B29C48/03; B29C48/04; B29C48/09; B29C48/10; B29C48/07; B29C48/08; B29K; B29K2027/00; B29K2995/00; B29K2995/0037; B29K2995/0072; B29L; B29L2023/00; B29L2023/001; C10M2201/00; C10M2201/003; C10M2201/04; C10M2201/0403; C10M2201/043; C10M2201/0433; C10M2207/00; C10M2207/02; C10M2207/021; C10M2207/022; C10M2207/0225; C10M2207/40; C10M2207/402; C10M2207/404; C10M2223/00; C10M2223/02; C10M2223/049; C10M2223/10
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
91 words
A dusting agent for imparting inter-film lubricity to a polymer film comprising a mixture of (A) a polyhydric alcohol having a boiling point of 180°C or more, a viscosity at 20°C of 100 mPa.s (cP) or less, and a specific gravity at 20°C of 1 - 1.2, (B) an amphoteric or nonionic surface active agent, (C) a vegetable oil having a specific gravity of 0.86 - 0.99, and (D) an inorganic powder having an average particle diameter of 1 - 20 µm and an oil absorption of 1 cm³/g or less.
Claim 2
Dependent Claim
91 words
A dusting agent for imparting inter-film lubricity to a polymer film comprising a mixture of (A) a polyhydric alcohol having a boiling point of 180°C or more, a viscosity at 20°C of 100 mPa.s (cP) or less, and a specific gravity at 20°C of 1 - 1.2, (B) an amphoteric or nonionic surface active agent, (C) a vegetable oil having a specific gravity of 0.86 - 0.99, and (D) an inorganic powder having an average particle diameter of 1 - 20 µm and an oil absorption of 1 cm³/g or less.
Claim 3
Dependent Claim
42 words
The dusting treatment agent according to claim 1, comprising 84 - 52% by weight of component (A), 0.5 - 4% by weight of component (B), 0.5 - 4% by weight of component (C), and 15 - 40% by weight of component (D).
Claim 4
Dependent Claim
76 words
A method of dusting treatment for imparting inter-film lubricity to a tubular film of a polymer of a vinylidene chloride derivative which comprises continuously circulating and supplying a dusting agent into the extruded tubular parison which is still in the unsolidified state and situated immediately below the extrusion die, in the extrusion process for producing a tubular film of a vinylidene chloride resin characterized in that the dusting agent is according to claim 1 or 2.
Claim 5
Dependent Claim
29 words
The method of dusting treatment for tubular film according to claim 3 wherein the film is a seamless tubular film of a layflat width of 300 - 35 mm.
Claim 6
Dependent Claim
23 words
The method of dusting treatment for tubular film according to claim 3 or 4, wherein the film-forming velocity is 35 m/minute or more.
Claim 7
Independent Claim
44 words
The method of dusting treatment for tubular film according to any of the claims 3 to 5, wherein the vinylidene chloride derivative resin, when formed into film, has a gas permeability of 80 cm³/50 µ m² 24 h bar 65% R.H. 23°C or less.
Claim 8
Dependent Claim
110 words
A vinylidene chloride derivative resin film having improved anti-blocking characteristics which comprises a vinylidene chloride derivative resin film and a mixture adhering to at least the inner surface of the tubular film, the mixture comprising (A) a polyhydric alcohol having a boiling point of 180°C or more, a viscosity at 20°C of 100 mPa.s (100 cP) or less, and a specific gravity at 20°C of 1 - 1.2, (B) an amphoteric or nonionic surface active agent, (C) a vegetable oil having a specific gravity of 0.86 - 0.99, and (D) an inorganic powder having an average particle diameter of 1 - 20 µm and an oil absorption of 1 cm³/g.
Claim 9
Dependent Claim
110 words
A vinylidene chloride derivative resin film having improved anti-blocking characteristics which comprises a vinylidene chloride derivative resin film and a mixture adhering to at least the inner surface of the tubular film, the mixture comprising (A) a polyhydric alcohol having a boiling point of 180°C or more, a viscosity at 20°C of 100 mPa.s (100 cP) or less, and a specific gravity at 20°C of 1 - 1.2, (B) an amphoteric or nonionic surface active agent, (C) a vegetable oil having a specific gravity of 0.86 - 0.99, and (D) an inorganic powder having an average particle diameter of 1 - 20 µm and an oil absorption of 1 cm³/g.
Claim 10
Dependent Claim
66 words
The film according to claim 7 wherein the proportions of components of the adhered mixture containing the components A, B, C and D are 40 - 10% by weight for the component A, 5 - 10% by weight for the component B, 5 - 10% by weight for the component C, and 50 -70% by weight for the component D, the sum being 100% by weight.
Claim 11
Dependent Claim
31 words
The film according to claim 7 or 8 which is in the form of a tube and which is obtainable by the method of any of the claims 3 to 6.
References Cited (Backward Citations)
No citation records indexed.
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