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

Multilayer sheet comprising a protective polyurethane layer

A polyurethane layer, multi-layer technology, applied in layered products, transportation and packaging, synthetic resin layered products, etc., can solve problems such as premature, achieve high weather resistance, good wear resistance and scratch resistance , the effect of improving the appearance

Inactive Publication Date: 2005-03-30
3M INNOVATIVE PROPERTIES CO
View PDF10 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Unfortunately, there are some problems with applying decorative and / or functional films to these areas: when the film is applied to these inter-pillars (often referred to as B-pillars), they tend to lift prematurely

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0093] The base film was prepared by extruding a 100 micron film comprising ethylene-methacrylic acid copolymer (partially neutralized with zinc cations, Surlyn® commercially available from DuPont). TM 1705-1) and a mixture of stabilizers. The composition used to extrude the film contained a UV radiation stabilizer similar to that recommended by the polymer resin manufacturer and included a pair of UV radiation absorber, hindered amine light stabilizer and antioxidant.

[0094] Using conventional extrusion methods, the mixture was extruded onto an untreated polyester support (23 micron Hostaphan TM , available from Mitsubishi Polyester Film GmbH, Wiesbaden, Germany). The resulting film had a smoother side (the side closer to the polyester support), and a rougher side (formed after the extrusion process by exposing a steel casting roll to the extruded polymer melt). After cooling, the film was peeled from the polyester carrier and rolled up.

[0095] The film thus prepared ...

Embodiment 2-3

[0104] Examples 2 and 3 samples were prepared in a manner similar to that described in Example 1, except that the chemistry of the polyurethane prepolymer in the black coating composition was changed. As shown in Table 1, polyether- and polyester-based polyurethanes were used instead of the polycarbonate-based polyurethanes, respectively.

Embodiment 4-6

[0106] Example 1 was repeated except that the surfactant was omitted and various amounts of fumed silica were added to the samples of Examples 4-6 respectively to produce films with a black matte appearance. Fumed silica (ACEMATT available from Degussa Huels AG, Frankfurt, Germany TM OK412) was added in amounts of 2.5, 4.0 and 8.0% by weight.

[0107] Specifically, 100 parts of Neorez was first mixed with fumed silica. The mixture was stirred at 2000 rpm for about 4 minutes. Afterwards the crosslinker is added, followed by the pigment paste. The mixture was stirred at 200 rpm for 10 minutes.

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
particle sizeaaaaaaaaaa
acid valueaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention relates to a multi-layer sheet for use as a decorative protective film on a door or window post of a vehicle. The multi-layer sheet comprises (i) a polymeric film having a thickness of not more than 150mu and that is formed from an ionomer of an olefin-vinyl carboxylic acid copolymer, (ii) on a first side of the polymeric film a cross-linked polyurethane layer comprising the crosslinking reaction product of a polyurethane containing acid groups and a crosslinker and (iii) on a second side of the polymeric film opposite to the first side, an adhesive layer.

Description

field of invention [0001] The present invention relates to a pressure sensitive adhesive coated multilayer sheet for use as a decorative and protective film on a vehicle door or window pillar. The invention also relates to a vehicle having said multilayer sheet, and a method of manufacturing said multilayer sheet. Background of the invention [0002] The use of adhesive-coated films in the automotive industry, which is well known, has become more frequent in recent years to provide additional functionality and decoration to the exterior surfaces of vehicles. For example, in EP 1 004 608 a multilayer protective adhesive sheet is disclosed. The sheets are usually glued to relatively flat body parts, such as flat bumper surfaces and flat side panels in the lower body area, where flying rocks often strike the paint. The sheet is used to protect the specific parts on the vehicle body where it is pasted. [0003] On the other hand, the automotive industry also requires decorati...

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): B60R13/04B32B27/32B32B27/40C09J7/02C09J201/00
CPCB32B27/40B32B27/32B32B2375/00B32B27/30B32B2605/006B32B2369/00B32B27/08B32B7/12
Inventor I·L·法克斯
Owner 3M INNOVATIVE PROPERTIES CO
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