Tedlar® adhesive

TEDLAR films are supplied with different surface characteristics. A (one side adherable) and B (both sides adherable) surfaces are used with adhesives for bonding to a wide variety of substrates. These surfaces can be bonded with a variety of adhesives, including acrylics, polyesters, epoxies, elastomeric adhesives, and pressure-sensitive mastics. The S surface has excellent antistick properties and is being used as a mold-release film for parts made from epoxies, phenolics, elastomers, and other polymeric materials.94... 

While this book was in its final preparation stage, two additional types of adhered sheet linings for chemical exposures have come to our attention. One is a sheet with, as the exposed face, a Tedlar(sf film adhered to a layer of rubber-asphalt blend. The sheet is applied with rollers to a substrate surface that has been coated with an adhesive primer. Sheet edges are butted with an adhesive lap strip of Tedlar applied over the joint to protect it. This is a proprietary product presently available from only one source, which will supply particulars of the application procedure and chemical resistance tables upon request. 

An Initial difficulty with Tedlar had been poor adhesion to EVA and EMA. This has been corrected by the x ise of an all-acryllc contact adhesive that can be coated directly onto one surface of Tedlar films. The coated adhesive, a Du Pont product designated 68040 Is dry and non-tacky at ambient conditions thus coated Tedlar can be readily unwound from supply rolls. Experimental testing Indicates that when the adhesive Is heated during the EVA... 

Because the glass-to-EVA interface bonding problem seemed to be solved when all samples exhibited adherent and persistent bonds, the focus of the effort was shifted to back-sheet adhesion. An additional series of test (see Table II) confirmed the good results of Tedlar with the Du Pont adhesive 68040. Korad 63000 may be a useful material, but cure temperatures during lamination caused some degradation. Additional tests on this acrylic sheet may be run. A polyester film, Scotchpar 20CP, was interesting, because it would be less expensive than a polyvinyl fluoride film, such as Tedlar. This test series showed that a new primer or adhesive was needed for the Scotchpar film. 

Tests with Tedlar and Adhesive 68040 showed adhesion to EMA. However, adhesion after cold-water soak was poor. This problem is being investigated. 

When a flat solar collector is used, a polymer film based on fluoropolymers, e.g., Tedlar (S/ polyvinylidene fluoride, has been used to make a laminate with an adhesive. The solar collector, so formed, is light-weight and low-cost. 

Inside aircraft the fire, smoke and toxicity performance of PAEK is often their key advantage versus other plastics. PAEK produce relatively little smoke and toxic gas in fire situations and they are used extensively in cabin structures. Polyaryletherketoneketone (PEKK) (often laminated with Tedlar) is used to make thermoformed cabin interior panels. Amorphous PEKK has the advantage of being thermoformable at relatively low temperatures which are compatible with polyvinylidene fluoride (PVDF) and the various adhesives used in the laminate. PEEK is found in window surrounds, passenger service units and lamp housings. Glass fibre-reinforced PEEK is used in the... 

Nonoriented Tedlar SP films (Types 8 and 9) offer excellent conformability to almost any shape or substrate while maintaining the durability, chemical resistance, and ease of cleaning expected of PVF film.1 ] Nonoriented films are available as multilayer films without adhesives or heat sealing. Multilayer technology allows for effects such as pearlescent or metallic colors. The Tedlar SP process allows a pigmented base layer to be covered with an integral clear top layer. 

VAR 5831 Extremely flexible adhesive with outstanding bonds to metal (preheated) and thermoplastics. Recommended for bonding thermoplastic films. PET (Mylar), (Tedlar), polyurethane, vinyl, moderate temperature service level. 149 218 250 Slow -10°C 150°F... 

The space industry makes extensive use of adhesive tape. The major formulator companies propose such space grade tapes as Kapton, Tedlar and Teflon, polyester or foam coated with various very high bonding capabilities, sensitive to pressure. 

Du Pont has three types of Tedlar film, Type A, with one side treated for bonding Type B, with both sides bondable and Type S, which is untreated and is used as a release film (www2.dupont.com). Type B is used in laminating to metals, plastics, wood, and other materials it requires no further surface preparation for adhesive bonding. The methods for preparing the untreated film for adhesive bonding are similar to those of polyolefins and lluoropolymers (see Chapter 6). 

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