Unlock instant, AI-driven research and patent intelligence for your innovation.

Polyvinyl acetal resin film and film roll thereof, and layered product

A polyvinyl acetal resin and laminate technology, applied in synthetic resin layered products, coatings, layered products, etc., can solve the problems of uneven surface of the film, easy cracking of the film, etc., and achieve excellent and uniform inhibition effect. surface effect

Active Publication Date: 2021-04-30
KURARAY EURO GMBH
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, as a result, there is a tendency that the adhesion between the resin films becomes stronger, and the film becomes easy to be broken when unwinding, or the surface of the film becomes uneven when unwinding, such as irregularities. Inhibition effect of self-adhesion may not be satisfied

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Polyvinyl acetal resin film and film roll thereof, and layered product
  • Polyvinyl acetal resin film and film roll thereof, and layered product
  • Polyvinyl acetal resin film and film roll thereof, and layered product

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0191] The polyvinyl acetal resins A and B described in Table 1 were blended at the mass ratio shown in Table 2 to obtain a polyvinyl acetal resin material. The viscosity of a 10% by mass toluene / ethanol=1 / 1 (mass ratio) solution of the obtained polyvinyl acetal resin material was measured by the same method as the viscosity of the polyvinyl acetal resins A and B described above. In addition, the peak top molecular weight and molecular weight distribution were measured and calculated according to the following method.

[0192]

[0193] The resins constituting the obtained polyvinyl acetal resin film were analyzed by GPC. For GPC analysis, GPCmaxTDA305 made by Viscotek and RI detector were used as an analysis device, and as a column, KF-G made by Shodex was connected with two pieces of GPC KF-806L and GPC KF-806L made by Shodex, and a guard column was connected at the front. A THF solvent and standard polystyrene (Easical GPC / SEC Calibration Standards PS-1 manufactured by Ag...

Embodiment 2

[0204] A film was formed in the same manner as in Example 1 except that the polyvinyl acetal resin B was not used as the polyvinyl acetal resin, and a polyvinyl acetal resin film 2 was obtained. About the obtained resin film 2, the physical property of each surface was measured by the method similar to Example 1. The results are shown in Table 2.

Embodiment 3

[0206] Add 7.5 parts by mass of triethylene glycol di-2-ethylhexanoate (7% of the total amount of PVB resin and plasticizer) as a plasticizer to a total of 100 parts by mass of polyvinyl acetal resin. Except that, a film was formed in the same manner as in Example 1 to obtain a polyvinyl acetal resin film 3 . About the obtained resin film 3, the physical property of each surface was measured by the method similar to Example 1. The results are shown in Table 2.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
viscosityaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The present invention pertains to a polyvinyl acetal resin film made of a polyvinyl acetal resin material, wherein the thickness thereof is 5-350 [mu]m, formula (1): Rz1(a) > 1.1 * Rz2(a), and formula (2): 3 > Rz2(a) are satisfied, where Rz1(a) ([mu]m) represents the average value of the ten-point average roughness of surface A which is one surface of the film rougher than the other surface, and Rz2(a) ([mu]m) represents the average value of the ten-point average roughness of surface B which is the smoother surface, and the value obtained by dividing the standard deviation of the ten-point average roughness of surface A by Rz1(a) and the value obtained by dividing the standard deviation of the ten-point average roughness of surface B by Rz2(a) are each 0-0.30, the viscosity of a 10-mass% concentration toluene / ethanol = 1 / 1 (mass ratio) solution of a polyvinyl acetal resin in the polyvinyl acetal resin material is 100-1000 mPa*s as measured using a Brookfield-type (B-type) viscometer at 20 DEG C and 30 rpm, and the amount of a plasticizer in the polyvinyl acetal resin film is 0-20 mass% with respect to the total mass of the polyvinyl acetal resin film.

Description

technical field [0001] The present invention relates to a polyvinyl acetal resin film, a film roll thereof, and a laminate including the polyvinyl acetal resin film. Background technique [0002] A film made of polyvinyl acetal resin is widely used as an interlayer film for laminated glass for various vehicles and buildings because of its excellent transparency, flexibility, impact absorption, and adhesion to glass. Such films are usually stored in the state of being wound on a core material in a roll form from the viewpoint of its handling, but there is a possibility that adjacent films are strongly adhered to each other during storage, and the films are easy to automatically separate over time. Adhesion problem. In order to prevent self-adhesion in such a film roll, for example, an interlayer film for laminated glass is proposed, which is composed of a plasticized polyvinyl acetal resin layer provided with fine unevenness on both sides by embossing, etc., An interlayer f...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18B29C48/28B29C48/35B29C59/04B32B15/082B32B17/10B32B27/30B60J1/00C03C27/12C08K3/08C08L29/14
CPCB29C48/28B29C59/04C08J5/18C08L29/14C08K5/11B32B2307/102B32B17/1055B32B17/10761B32B17/10036B32B17/10174B32B2255/10B32B7/12B32B27/308B32B2307/20B32B15/08B32B2419/00B32B2307/732B32B2307/51B32B2307/422B32B27/28B32B27/302B32B2307/71B32B27/325B32B15/082B32B2264/105B32B2250/03B32B27/32B32B27/281B32B2270/00B32B27/22B32B15/02B32B2250/40B32B2307/412B32B2307/202B32B2264/101B32B27/365B32B27/06B32B2255/205B32B2307/75B32B2264/108B32B2307/548B32B27/36B32B15/20B32B2307/712B32B2605/003B32B2307/538B32B2264/102B32B2262/101B32B15/09B32B15/043B32B15/085B32B27/20B32B27/08B29C48/08B29C48/305B29C48/022B29C48/92B29C48/0011B29C43/24B29C2948/92704B29C2948/9278C08J2329/14C08J2429/14B29C2059/023B29C43/222B29L2007/002B29L2007/001B29K2029/14C08L2205/025C08L2203/16B32B17/10981H01B5/14H01B1/02B32B2605/00B32B17/10B32B17/1022B32B17/10605B32B2605/006B32B3/263B32B3/30
Inventor 浅沼芳聪矶上宏一郎
Owner KURARAY EURO GMBH