Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Coated metal plate and drawn-and-ironed can

A technology of deep drawing and thinning, metal plate, applied in metal layered products, devices for coating liquid on the surface, packaging, etc., can solve the problems that the film lamination method cannot be applied to films, film thickness, etc., and achieve excellent can making Processability, excellent productivity, effect of preventing peeling

Inactive Publication Date: 2021-08-17
TOYO SEIKAN GRP HLDG LTD
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, since the film lamination method cannot be applied to the formation of a thin film, the film produced by this method tends to be thick to cause disadvantages from an economical point of view.

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
  • Coated metal plate and drawn-and-ironed can
  • Coated metal plate and drawn-and-ironed can
  • Coated metal plate and drawn-and-ironed can

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0139] Hereinafter, the present invention will be described in detail with reference to experimental examples. Here, the term "part" means "part by mass".

[0140] Each measurement item of polyester resin A-K was performed by the following method. Polyester resins A-K are polyester resins that have not been acrylic modified.

[0141] (measurement of number average molecular weight)

[0142] Solids of polyester resins were measured based on gel permeation chromatography (GPC) using a calibration curve of standard polystyrene.

[0143] (measurement of glass transition temperature)

[0144] The solid content of the polyester resin was measured using a differential scanning calorimeter (DSC).

[0145] (measurement of acid value)

[0146] Dissolve 1 g of the solid matter of the polyester resin in 10 ml of chloroform, and titrate with 0.1 N KOH ethanol solution to determine its resin acid value (mgKOH / g). Phenolphthalein was used as an indicator. For polyester resins insolubl...

experiment example 1 to 25

[0169] A coated metal sheet used in each experimental example was prepared using the aqueous coating composition obtained in each production example. The coating films on the inner and outer sides of each coated metal sheet were formed using the same aqueous coating composition. For the metal plate, use an aluminum plate (alloy 3104, plate thickness: 0.28mm, chromium weight in the surface treatment film: 20mg / m2) treated with phosphoric acid chromate 2 ). First, the formed outer surface was coated with an aqueous coating composition using a bar coater so that the coating film thickness after drying and firing would be 3 μm, and dried at 120° C. for 60 seconds. Thereafter, the opposite surface to be the inner surface side was coated with an aqueous coating composition using a bar coater in such a manner that the coating film thickness after drying and firing would be as shown in Table 2. The metal plate thus coated was fired at 250° C. (inner temperature of the oven) for 60 s...

experiment example 26 to 40

[0171] Aqueous coating compositions were prepared similarly to Production Example 5, except that the type of polyester resin, type of curing agent, or solid content blending ratio was changed as shown in Table 3.

[0172] The aqueous coating composition thus obtained was used for the production of coated metal panels. The coating films on the inner side and outer side of the coated metal plate were formed using the same aqueous coating composition. The metal plate used here is an aluminum plate (3104 alloy, plate thickness: 0.28mm, chromium weight in the surface treatment film: 20mg / m 2 ). First, the formed outer surface was coated with an aqueous coating composition using a bar coater so that the coating film thickness after drying and firing would be 3 μm, and dried at 120° C. for 60 seconds. After that, the opposite surface on the inner side was coated with an aqueous coating composition using a bar coater in such a manner that the thickness of the coating film after dryi...

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
glass transition temperatureaaaaaaaaaa
thicknessaaaaaaaaaa
glass transition temperatureaaaaaaaaaa
Login to View More

Abstract

The present invention pertains to a coated metal plate having a coating film on at least one surface thereof. Provided are the coated metal plate and a drawn-and-ironed can comprising the coated metal plate that have excellent can production workability without metal exposure even when exposed to harsh processing such as drawing and ironing, as a result of: the coating film containing polyester resin as a main component thereof and a beta-hydroxyalkyl amide compound as a curing agent; and the elongation of the coating film under test conditions of 90 degree being at least 200%.

Description

technical field [0001] The present invention relates to a painted metal sheet and a drawn-ironed can made from the painted metal sheet. More specifically, the present invention relates to coated metal sheets for drawing thinned cans. Coated metal sheets have excellent can-making processability, effectively preventing metal exposure even when subjected to severe processing such as deep drawing and thinning. In addition, the painted metal sheet has excellent resistance to peeling of the paint film, whereby delamination or peeling of the paint film during heat treatment performed after forming can be prevented. The invention also relates to deep-drawn thinned cans. Background technique [0002] As a can material, an organic resin-coated metal sheet prepared by coating a metal sheet such as an aluminum sheet with a thermoplastic resin film is known. It is also known to subject this organic resin-coated metal plate to drawing or drawing and thinning to produce seamless cans fo...

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): B32B15/08B32B27/26B32B27/36B65D1/00B65D1/12C09D5/02C09D167/00
CPCC08G63/183C09D167/02C09D5/024C09D5/08C09D167/07C08L67/02C08K5/20C09D7/20C09D7/63B05D1/02B05D1/28B05D2202/10C09D167/08
Inventor 柏仓拓也山本宏美樱木新张楠
Owner TOYO SEIKAN GRP HLDG LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com