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Microporous materials and multi-layer articles prepared therefrom

A technology of microporous materials and microporous sheets, applied in paper products, layered products, synthetic resin layered products, etc., can solve problems such as poor printing quality, processing and handling difficulties, and prolonged drying time.

Inactive Publication Date: 2012-05-23
PPG IND OHIO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Industry standards require a certain maximum thickness, and to meet these, manufacturers often sacrifice the rigidity or stiffness of their materials, which can create processing and handling difficulties, especially during printing
[0005] Other disadvantages can include poor ink adhesion and prolonged drying times, as well as poor print quality, which can be overcome by applying coatings to improve ink adhesion and printability
However, such coatings can adversely affect other physical properties of the printable sheet

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0072] In Part 1 of the following examples, the materials and methods used to prepare the control and example mixtures presented in Table 1 are described. In Part 2, the methods used to extrude, calender and extract sheets made from the mixture of Part 1 are described. In Section 3, the methods used to determine the physical properties reported in Table 2 are described. In part 4, scale-up experiments using the protocol described in part 2. The materials used for the control and Examples 8 and 9 for the scale-up experiments are listed in Table 3 as a percentage of the total mixture. The physical properties presented in Table 4 include ARTISYN synthetic paper from Daramic, LLC., Owensboro, Kentucky, as a commercial comparison.

[0073] Part 1 Preparation of the mixture

[0074] In the order and amounts (grams (g)) specified in Table 1, dry ingredients were weighed into an FM-130D Littleford plowshare mixer with a high-intensity chopper-style mixing blade. The dry ingredien...

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PUM

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Abstract

A microporous material is provided in the form of a singly extruded microporous sheet having opposing first and second surfaces, comprising: (a) a polymeric matrix component comprising: (i) 25 to 75 weight percent of low melt flow index polypropylene having a melt flow index ranging from 0.1 to 30 grams / 10 minutes; (ii) 12.5 to 25 weight percent of ultrahigh molecular weight polyethylene; and (iii) 0 to 62.5 weight percent of high density polyethylene; (b) a finely divided, inorganic filler component dispersed throughout the polymeric matrix; and (c) a network of interconnecting pores communicating substantially throughout the microporous material, the pores constituting 10 to 80 percent by volume of the microporous material. The sheet typically has a thickness ranging from 3 to 8 mils and a stiffness of greater than 1 g / micron. In certain embodiments, the sheet has a density of greater than 0.75 g / cc. Also provided are multi-layer articles.

Description

[0001] Cross References to Related Applications [0002] This application is a continuation-in-part of US Patent Application 11 / 601,191, filed November 17, 2006 and published as US Patent Application Publication No. US2008 / 0118738 Al, both of which are incorporated herein in their entirety. field of invention [0003] The present invention relates to multicomponent microporous materials and multilayer articles comprising said materials. Background of the invention [0004] In recent years synthetic papers have been developed for use in the printing and labeling industries. Synthetic papers offer several significant advantages over natural wood pulp papers including water resistance, tear resistance and tensile strength. These materials are typically made from polyolefin or polyester sheets. Industry standards require a certain maximum thickness, and to meet these, manufacturers often sacrifice the rigidity or stiffness of their materials, which creates processing and handl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/10C08J9/28
CPCC08L23/04B32B2260/046B32B27/205B32B27/32B32B2554/00B32B2264/104B32B2307/54B32B7/06B32B2270/00C08L23/10B32B2264/102B32B27/06B32B7/12B32B27/08B32B27/20B32B27/306B32B27/322B32B2255/10B32B2307/748B32B2307/75B32B2519/00C08L2666/06C08J9/28C08K3/00
Inventor J·L·博伊尔C·R·克莱曼N·K·拉曼P·L·贝尼纳蒂
Owner PPG IND OHIO INC