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Multilayer polymeric sheets and light weight laminates produced therefrom

A technology of polymer sheets and laminates, applied in the direction of layered products, chemical instruments and methods, synthetic resin layered products, etc., can solve the problems of low penetration resistance and so on

Inactive Publication Date: 2016-05-04
PERFORMANCE MATERIALS NA INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, laminates prepared from such materials suffer from disadvantages associated with low penetration resistance

Method used

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  • Multilayer polymeric sheets and light weight laminates produced therefrom

Examples

Experimental program
Comparison scheme
Effect test

example 1 to 13 and comparative example A

[0100] Thirteen (13) laminates were prepared according to the standard lamination procedure shown above, numbered examples 1-13. A three-layer sandwich sheet is prepared according to the standard extrusion method described above, which has an outer layer of ternary ionomer (polymer A) or ionomer (polymer C) and an inner layer of EVA (polymer B). More specifically, polymer C is a neutralized product of a dimer.

[0101] The thickness of the individual layers, as well as the overall thickness of the multilayer sheet and the nominal three-layer polymer structure ratio are shown in Table 1. A micrometer with a flat measuring head is used to measure the overall thickness of the three-layer sheet. The thickness of the entire sheet was measured in three positions (left, center, and right), and the average of the three thickness measurements is recorded in Table 1.

[0102] Calculate the thickness of the inner and outer layers of the three-layer sheet based on the feed ratio of the incom...

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Abstract

A multilayer polymeric sheet comprising three layers is provided. The two outer layers of the multilayer polymeric sheet comprise an ionomeric composition and are positioned on either side of the inner layer of the multilayer polymeric sheet, which comprises an ethylene vinyl acetate (EVA) composition. Further provided is a laminate comprising the multilayer polymeric sheet, for example, a glass laminate. Preferred laminates exhibit a sound transmission class of greater than 25, as measured by ASTM E314, or an effective stiffness by bending of about 3.0 mm to about 5.0 mm, as measured by ASTM C158. Also preferably, the laminate has an areal density that is lower than that of a glass monolith of comparable thickness.

Description

Technical field [0001] The present invention relates to a multilayer polymer sheet and a lightweight laminate prepared therefrom. The laminate also has improved sound insulation properties. Background technique [0002] Several patents and publications are cited in this specification to more fully describe the state of the art to which the present invention belongs. The entire disclosures of each of these patents and publications are incorporated herein by reference. [0003] Glass laminates for safety glass applications are characterized by high impact resistance and penetration resistance. These laminates that do not splash glass shards and shards when broken are usually composed of a sandwich panel in which two glass sheets or flat plates and a polymer film or sheet are bonded together, and the sandwich is arranged on two glass sheets. Between sheets. One or both of the two glass sheets can be replaced by an optically transparent rigid polymer sheet, such as a sheet made of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B17/10B32B27/08B32B27/20B32B27/30
CPCB32B17/10018B32B17/10036B32B17/10678B32B17/10743B32B17/10788B32B27/08B32B27/20B32B27/30B32B27/306B32B27/308B32B2250/03B32B2307/412B32B2307/546B32B2307/56
Inventor S.J.本尼森T.科巴亚斯S.D.米尔沙德特K.纳卡塔S.C.佩塞克W.A.沙夫弗Y.斯塔诺基C.A.史密斯
Owner PERFORMANCE MATERIALS NA INC
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