配方类型：	ADHESIVES
配方说明：	Front-Seal Envelope Adhesive (Water-Based Dextrin)
配方组成：	Visc. (Brookfield) @ 80 F/5,000-10,000 cps Heat to 195 F. Hold 1 h. Cool to 140 F. Add polyvinyl acetate emulsion well. Polyethylene Glycol 400/0.2 Tributyl Phosphate/0.1 Water/32.9 *Potato, tapioca, or waxy maize-based canary dextrins give best Corn Syrup (or other suitable plasticizer)/1.1 properties. Mix and cool. Sodium Bisulfite/0.1 Properties: Suitable Dextrin*/63.5 Staleys 955 SR Tapioca dextrin, or Stadex 230 dextrin should perfor

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