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Compositions for humidity proof heat sealer having low specific gravity

A technology of heat sealant and composition, applied in sealing devices, adhesives, transportation and packaging, etc., can solve the problems of reducing fuel efficiency and high specific gravity of sealants, and achieve the effect of improving fuel efficiency

Inactive Publication Date: 2009-10-14
HYUNDAI MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In addition, conventional sealants have a very high specific gravity of about 1.7, and about 7-8 kg of sealant is used to manufacture a car, which increases the overall weight of the car, which reduces fuel efficiency

Method used

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  • Compositions for humidity proof heat sealer having low specific gravity
  • Compositions for humidity proof heat sealer having low specific gravity
  • Compositions for humidity proof heat sealer having low specific gravity

Examples

Experimental program
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Embodiment 1-6

[0052] A low specific gravity anti-humidity sealant composition of the present invention was prepared. The components listed in Table 1 below were mixed in a batch type kneader commonly used by those skilled in the related art. After mixing and dispersing the sealant composition at 25° C. to 35° C., followed by vacuum degassing, the sealant composition is prepared with a viscosity of 150,000 to 250,000 cps (centistokes).

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Abstract

The present invention relates to humidity-proof heat sealer compositions having low specific gravity, which comprise a polyvinyl chloride resin, a filler, a moisture absorbent, a plasticizer, an adhesion promoter, an additive, and so forth, for use in automotive steel sheet joints or outside panel joints. When compared with conventional sealer compositions, the present compositions provide improved humidity resistance, as well as improved fuel efficiency.

Description

[0001] Cross References to Related Applications [0002] This application claims priority under 35 U.S.C. §119(a) to Korean Patent Application No. 10-2008-0033365 filed Apr. 10, 2008, which is hereby incorporated by reference in its entirety. field of invention [0003] The invention relates to a low specific gravity humidity proof heat sealer composition, which includes polyvinyl chloride resin, filler, hygroscopic agent, plasticizer, tackifier (adhesionpromoter), additives and the like. Background technique [0004] Such as figure 1 As shown, in the manufacturing process of automobiles, a sealer is applied to the steel plate joints of automobiles before painting to prevent water leakage, rust and noise. [0005] For conventional sealants, as disclosed in Korean Patent Application No. 2001-41257, such as figure 2 As shown, they are cured under the action of heat while passing through an oven for bottom, middle and top coating methods. [0006] During long weekends, holi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/10C09J127/06C08L27/06C08K13/06C08K7/22C08K9/10C08K3/22
CPCC09K2200/0635C09K2200/0239C09K3/10C09K2200/0441C09K3/1006C09K2003/1081
Inventor 崔圭生
Owner HYUNDAI MOTOR CO LTD
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