Polyester mulching film

A coated film and polyester-based technology, which is applied to inks, household utensils, applications, etc., can solve the problems of lowering, ink falling off, commodity value, etc.

Inactive Publication Date: 2006-01-18
TOYO TOYOBO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, ink peeling occurs, resulting in a decrease in product value

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0098] A rutile type containing 80% by weight of polyethylene terephthalate resin with an intrinsic viscosity of 0.62dl / g and 15% by weight of polystyrene with a melt index of 5.5g / 10min and an average particle size of 0.3μm is melted at 285°C A resin composition containing 5% by weight of titanium oxide was extruded on a roll with a surface temperature of 40°C, and then the obtained unstretched sheet was longitudinally stretched 3.5 times at 90°C to obtain a uniaxially stretched polyester film. Stretch film.

[0099] A coating liquid was prepared. The coating liquid contained a copolyester resin (manufactured by Toyobo Co., Ltd., Bailenal) with a solid content of 3.15% by weight, and a terminal isocyanate group with a solid content of 5.85% by weight. Water-based block water-soluble polyurethane resin (made by Daiichi Kogyo Pharmaceutical Co., Ltd., Elastron), a quaternary ammonium salt-based antistatic agent as an antistatic agent in an amount of 6.20% by weight to the above...

Embodiment 2

[0103] In addition to making 2.5% by weight of copolyester resin contained in the coating layer and 4.6% by weight of water-soluble polyurethane as inert particles, 6.0% by weight of silicon oxide particles with an average particle diameter of 0.45 μm and an average particle size of 0.8 μm A polyester-based coating film was obtained in exactly the same manner as in Example 1 except that the calcium carbonate particles were 2.0% by weight. The properties and evaluation results of the obtained films are shown in Table 1 and Table 2.

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PUM

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Abstract

The polyester coating film is polyester film formed on at least one surface of polyester film of opacity over 0.3 optical density. The present invention features that the mirror brightness G1 in 60 deg of the coating surface and the mirror brightness G2 in 75 deg of the coating surface meet the requirements that G1 is not greater than 20 and that G2/G1 is 1-4.

Description

technical field [0001] The present invention relates to a polyester-based coating film excellent in ink adhesion, printability, and powder fall-off resistance, and is particularly suitable as a substrate for labels. Background technique [0002] Polyester film has high crystallinity, excellent transparency, gloss, mechanical properties and chemical resistance, so it can be used in a wide range of applications. Furthermore, for the purpose of imparting printability, blocking resistance, antistatic properties, etc., a coating layer is generally formed on the surface of the polyester film. In addition, in order to achieve both transparency and handleability (blocking resistance, sliding properties, abrasion resistance, etc.) of the film, particles are generally contained in the coating layer of the polyester film to form irregularities on the film surface. [0003] In printing, especially heat-sealing printing and offset printing, which are often used as label printing methods...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D11/10C09D11/104
Inventor 西村修一塚本悟志森重地加男奥平正西睦夫
Owner TOYO TOYOBO CO LTD
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