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Barriers to pest invasion

a technology of barriers and pests, applied in the field of physical pest barriers, can solve problems such as cables, special problems, etc., and achieve the effects of preventing pests from entering and destroying the environmen

Inactive Publication Date: 2005-10-06
SYNGENTA CROP PROTECTION INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0010] (2) a circumferential flange portion located at the open end of the body portion that is adapted to closely contact a surface when the boot is installed. The flange is adapted to directly contact surfaces such as a concrete slab or a continuous plastic sheet to further enhance the degree of boot sealing when the boot is installed on a utility penetration.
[0013] The present invention also provides another solution to the problem of creating an effective barrier to pest invasion around utility penetrations into foundations, footers, or walls of buildings and other structures prior to pouring a concrete foundation. This aspect of the invention provides means for creating a barrier around an elongated member of a utility penetration, e.g., a pipe, and forming a continuous barrier within the concrete surface. The devices of the present invention when installed, prevent the formation of significant gaps between the device and a utility penetration, and between the device and the concrete layer. If any gaps are formed, they are small enough that the route of a crawling pest is diverted or significantly restricted and ideally completely inhibited. Specifically for termites, there should ideally be no continuous gaps through the barrier of greater than 1 / 16 inch and even more preferably 1 / 32 inch.

Problems solved by technology

With respect to either approach, chemical or physical barriers, the areas surrounding objects protruding through a slab such as utility penetrations (i.e. plumbing pipes, electrical conduit, cables, etc.) have presented special problems.

Method used

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Examples

Experimental program
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Effect test

example 1

Installation of a Cut-To-Fit Conical Barrier

[0094] A conical barrier having, initially, a single opening bordered by a flange adapted for heat-sealing to a sheet-type barrier is used. The body of the barrier boot is formed from a material including an active layer of a polymer matrix and a pesticide such as lambda-cyhalothrin dispersed through the matrix and a binder such as carbon black. This active layer is sandwiched between two layers of SARANEX (The Dow Chemical Company, Midland, Mich.). This arrangement prevents any substantial loss of the lambda-cyhalothrin until the outer SARANEX is breached. The pesticide is then available in an effective amount in the area of the breach, such that entry of pests via the breach is prevented.

[0095] Prior to installation of the barrier, the construction site is prepared for the installation of a foundation and utility penetrations are in place. Next, a sheet barrier is installed over the entire area including the utility penetrations, using...

example 2

Multilayer Barrier Boot

[0098] The barrier boot substructure can be produced as a multilayer, substantially non-releasing material. The layered structure can be produced as an extruded and laminated polyolefin film. The active ingredient, lambda-cyhalothrin, is incorporated into a centrally disposed layer that is sandwiched between layers of SARANEX film (Dow Chemical Company, Midland, Mich.). A layer of woven, high density polyethylene (scrim) is included to provide additional strength and durability. The outermost layers are selected to provide protection from deterioration due to UV exposure and to provide improved heat-sealing capability. As illustrated in FIG. 5, the material is produced as an eight-layer product as follows: [0099] Layer 1—New Generation Resin (NGR) (Fabrene, Inc.) layer 60, composed of black resin (No. 20413-19, Colortech Inc.), extrusion coating grade polyolefin plastomer (Affinity PT1450, Dow Plastics), and low-density polyethylene (LC-0552-A, Nova Chemical ...

example 3

[0111] The body of the barrier device was formed from a material including an active layer of a polymer matrix and a pesticide such as lambda-cyhalothrin dispersed through the matrix and a binder such as carbon black. This active layer was sandwiched between two layers of SARANEX (The Dow Chemical Company, Midland, Mich.). This arrangement prevents any substantial loss of the lambda-cyhalothrin until the outer SARANEX is breached. The pesticide may then be available in an effective amount in the area of the breach, such that entry of pests via the breach would be prevented.

[0112] Prior to installation of the barrier, the construction site was prepared for the installation of a foundation and utility penetrations were in place. The conical barrier, with inverted outer edge was placed atop the end of an elongated member of the utility penetration, such as a pipe and pulled down over the pipe. The smaller opening closely contacted the outer surface of the pipe.

[0113] The conical barr...

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PUM

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Abstract

Barrier devices against pest invasion are provided that allow sealing around a utility penetration (8), for example a pipe or conduit. In one embodiment, the barrier device is a barrier boot (2) that is sealed to a foundation slab (50), in order to prevent pest invasion through the spaces (52) formed between the foundation slab (50) and the utility penetration (8). In another embodiment, the device forms a continuous barrier with a surface receiving the utility penetration, for example a sheet-type barrier, a building foundation, footer or wall. In yet another embodiment, the device is a stand alone product which provides protection when embedded in concrete.

Description

FIELD OF THE INVENTION [0001] The present invention relates to physical pest barriers and, in particular, to physical pest barriers and methods for preventing or reducing pest invasion of a building or structure in the area surrounding a utility penetration. The present invention has particular application to shielding the area surrounding a utility penetration of a building concrete foundation slab having a pest barrier disposed intermediate the underside of the concrete foundation slab and the ground beneath the slab. The invention further has application to shielding the area around a utility penetration prior to pouring a concrete foundation, basement or crawl space slab. BACKGROUND [0002] Various measures to prevent pests such as termites, ants and other boring insects from entering buildings or other structures, in particular residential or commercial dwellings have been proposed. One approach is to use a chemical repellent or pesticide to create a chemical barrier to entry or...

Claims

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Application Information

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IPC IPC(8): A01M1/20A01M1/24A01M29/12A01M29/34B65D1/00E04B1/72
CPCA01M1/20A01M1/24A01M29/12Y10T428/13A01M2200/011E04B1/72A01M29/34
Inventor WESTCOTT, KARENBEAN, MICHAEL J.CUSH, RANDALL C.SWANSON, JAMES A.ALDRIDGE, TONI K.ROPER, ELRAY M.MEISNER, WALTER T. IIIWILKS, KARL A.SMALLWOOD, JOE L.
Owner SYNGENTA CROP PROTECTION INC
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