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Waterproof membrane

A waterproof membrane, white cement technology, applied in the direction of chemical instruments and methods, layered products, synthetic resin layered products, etc.

Active Publication Date: 2014-03-12
GCP APPL TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this flashing does not include pressure sensitive adhesive

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Table 2

[0046]

[0047] It should be noted that the bonding to concrete after UV exposure was better for samples containing highly reflective white particles than for corresponding samples prepared from gray particles. It should also be noted that the bond to concrete is improved after early exposure (especially after 28 mj) compared to unexposed samples. Without being bound by any theory, it seems likely that both processes occur simultaneously. First, the particles became better adherent to the pressure sensitive adhesive after UV and heat exposure compared to the level of adhesion of unexposed samples. This process causes the level of bonding to the concrete to rise. Second, pressure sensitive adhesives undergo degradation caused by UV and heat exposure. This process causes a decrease in the level of bonding to the concrete.

Embodiment 2

[0049] During warmer times of the year, the procedure of Example 2 was repeated using the film coated with pressure sensitive adhesive C. Results are shown in Table 3 in pounds per linear inch (pli) (also converted to kg / cm).

Embodiment 3

[0043] Example 2

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Abstract

The invention discloses a waterproof membrane which clings to a concrete cast to be combined with the concrete cast (namely, post-cast concrete). The waterproof membrane comprises a flexible carrier sheet, a pressure sensitive adhesive and reflective particles on the surface of the adhesive, wherein the average diameter of the reflective particles is equal to or greater than the thickness of the pressure sensitive adhesive; preferably, the reflective particles are ground white cement or ground hydrated white cement. The membrane does not comprise a removable release sheet that is typically used for preventing an adhesive portion of the membrane from adhering to the carrier sheet or the other portion of the membrane when the membrane is rolled up.

Description

[0001] This application is a divisional application of the invention patent application entitled "Waterproof Membrane" and the national application number is 201080063366.3 (PCT / CN2010 / 000166) submitted on February 8, 2010. technical field [0002] The present invention relates to a waterproof membrane that is bonded to a concrete cast (ie, post-cast concrete) by being attached thereto. The film includes a flexible carrier sheet, a pressure sensitive adhesive and reflective particles. However, the film does not have a removable release sheet which prevents the adhesive portion of the film from sticking to the carrier sheet or other parts of the film when the film is rolled up. Background technique [0003] Laminates of sheet-like waterproofing membranes are well known for application to concrete and other substrates. These laminates typically comprise a carrier sheet and a pressure sensitive adhesive layer (and optionally other layers). In many applications, flashing ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/14B32B7/12
Inventor R.A.维尔钦斯基丁红梅曹霞
Owner GCP APPL TECH INC