... adhesive bond strength tester 粘合强度试验机 21世纪教育网 adhesive envelope 胶口信封 adhesive fabric for application by heat 热敷粘胶布 21世纪教育网 ...
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The utility model belongs to the envelope improvement, composed of an envelope, an adhesive layer and a covering layer.
本实用新型属信封的改进。由信封、粘胶层、覆盖层组成。
When the utility model is in use, so long as the softness adhesive paper is torn down, very conveniently and cleanly, an envelope can be sealed and can be affixed with stamps for mailing.
本实用新型在使用时，只须将软性胶纸撕下，即可封口贴具邮票投递，十分方便快捷，干净卫生。
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