Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Decorative film and method for producing decorative molded body using same

A technology for decorative films and resin moldings, which is applied in the direction of chemical instruments and methods, decorations, applications, etc., and can solve the problems of insufficient adhesive strength between decorative films and moldings, insufficient solvent resistance and heat resistance, and decorative problems. Satisfactory reproducibility, excellent water resistance and chemical resistance, and extended heating time can be achieved without problems such as film cracking

Pending Publication Date: 2022-06-07
JAPAN POLYPROPYLENE CORP
View PDF25 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In such decorative molding by vacuum pressure forming and vacuum forming, when the decorative film and the molded body are pasted, there are occurrences of film cracks and / or wrinkles on the decorative film and adhesion between the decorative film and the molded body cannot be sufficiently obtained. question of strength
In addition, as a layer for improving the adhesive strength, the use of adhesives, tackifiers, etc. has been proposed, but the problem of using them is that they are expensive, the layer constitution becomes extremely complicated, and the solvent resistance and heat resistance are insufficient

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
  • Decorative film and method for producing decorative molded body using same
  • Decorative film and method for producing decorative molded body using same
  • Decorative film and method for producing decorative molded body using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-1

[0943] {Example 1-1}

[0944] - Production of decorative films

[0945] Using an extruder with a nozzle diameter of 40 mm (diameter), the polypropylene-based resin (1A-1-1) was extruded under the conditions of a resin temperature of 240° C. and a discharge rate of 13 kg / h, and introduced into the resin that has been controlled at 240°C. Melt extrusion was performed in a single-layer T-die having a temperature of °C, a die width of 400 mm, and a die lip opening of 0.8 mm. The melt-extruded film was cooled and solidified on a roll rotating at 3 m / min at 80° C. to obtain a single-layer unstretched film with a thickness of 200 μm. The unstretched film constitutes layer (I) of the decorative film.

[0946] - 3D decorative thermoforming

[0947] As the resin molded body (substrate) 5, the injection molded body composed of the polypropylene-based resin (1X-1) obtained above was used.

[0948]As a three-dimensional decorative thermoforming apparatus, "NGF-0406-SW" manufactured by ...

Embodiment 1-2 to 1-5

[0964] {Examples 1-2 to 1-5}

[0965] Except in the three-dimensional decorative thermoforming of Example 1-1, the polypropylene-based resin (1A-1-1) was changed to the polypropylene-based resins (1A-1-1) and (1A-2-) described in Table 2 Except for each blend (resin composition (B)) of 1), molding and evaluation were performed in the same manner as in Example 1-1. Table 2 shows the obtained results.

[0966] Since the MFR of the resin composition (B) is 40 g / 10 minutes or less and the strain hardening degree l is 1.1 or more, the obtained decorative molded body is excellent in appearance and adhesive force. In addition, the appearance of the regenerated molded body is excellent.

Embodiment 1-6

[0967] {Example 1-6}

[0968] In the three-dimensional decorative thermoforming of Example 1-1, the same procedure as in Example 1-1 was carried out, except that the polypropylene-based resin (1A-1-1) was changed to the polypropylene-based resin (1A-2-1). Methods were formed and evaluated. Table 2 shows the obtained results.

[0969] Since the MFR of the polypropylene-based resin (1A-1-2) is 40 g / 10 minutes or less and the strain hardening degree λ is 1.1 or more, the obtained decorative molded body is excellent in appearance and adhesive force. In addition, the appearance of the regenerated molded body is excellent.

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
melt flow indexaaaaaaaaaa
densityaaaaaaaaaa
molecular weight distributionaaaaaaaaaa
Login to View More

Abstract

The purpose of the present invention is to provide: a polypropylene-based decorative film which is easy to recycle, can simultaneously produce sufficient adhesive strength and product appearance, and is used for three-dimensional decorative thermoforming; also provided is a method for producing a decorative molded article using the same decorative film. The present invention relates to a decorative film adhered to a resin molded body using thermoforming, in which the decorative film comprises a layer (II) comprising a resin composition (B) containing a polypropylene-based resin (B), and the resin composition (B) has (b1) an MFR (B) (230 DEG C, a load of 2.16 kg) of 40 g / 10 minutes or less and (b2) a strain hardening degree lambda of 1.1 or more.

Description

[0001] This application is a divisional application of a Chinese patent application with an application date of August 9, 2017, an application number of 201780058496.X, and an invention title of "Decorative film and method for producing a decorative molded body using the same". technical field [0002] The present invention relates to a decorative film attached to a resin molded body by thermoforming and a method for producing a decorative molded body using the decorative film. More specifically, the present invention relates to a decorative film attached to a resin molded body by thermoforming, which can suppress shrinkage and cracking of the film at the time of thermoforming, and can exhibit sufficient adhesive strength to the resin molded body, and A method of producing a decorative shaped body using the decorative film. Furthermore, the present invention relates to a decorative film attached to a resin shaped body by thermoforming, which exhibits less fading of crimps afte...

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): C08J5/18C08L23/12C08L23/14C08L53/00B29C51/16B29C51/00
CPCC08J5/18B29C51/002B29C51/162C08J2323/12C08J2323/14C08J2353/00B29C51/16Y02P20/582B29K2023/12B29C51/10B29K2077/00B29K2025/06B29K2033/08B29K2069/00B29K2075/00B29K2067/00B29K2079/08B29K2065/00B29C51/14B29C48/022B29C48/21B29C48/08B32B27/281B32B2250/24B32B7/12B32B27/308B32B27/40B32B27/306B32B2307/536B32B27/34B32B27/365B32B2307/406B32B27/36B32B27/327B32B27/302B32B27/42B32B2307/30B32B2451/00B32B2307/72B32B27/08B32B27/32B32B27/00B32B2307/50
Inventor 胜野悟史飞鸟一雄北浦快人新部森万高桥邦宜
Owner JAPAN POLYPROPYLENE CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
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