要收集信封上的自動黏貼郵票怎麼辦?

為了郵票更方便使用，越來越多郵政機構發行自動黏貼郵票。郵票就像貼紙很方便貼在信封。但當你收到一封貼有自動黏貼郵票的信封，是不是將郵票放入水中就像傳統郵票一樣可以與信封分離?

 

 

澳洲的童軍自動黏貼郵票

 

以下是澳洲郵政教大家的方法：

Self-adhesive stamps have two layers of adhesive. One is the tack that bonds the stamps to the envelope; the other is a water-soluble adhesive that lies between the self adhesive tack and the stamp paper. The water-soluble layer is there so that collectors can obtain good used copies.

Self-adhesive tack is practically impervious to water on one side of the stamp and the varnish creates a waterproof seal on the other. When soaking by conventional methods water cannot reach the water-soluble layer effectively.

Although several substances have been touted as means of overcoming the problem, we do not favour the use of anything other than clean water. To give the water a chance to activate the soluble layer, it needs to be almost at boiling point and the stamps need to be immersed for up to half an hour. The stamps should then be gently eased off the paper and, when dry, any remaining tack removed carefully with an art gum eraser.

 

即是說放入滾水浸半小時，郵票就會與信封分離。