How to judge whether the self sealing bag is qualified

1. 外观检查：，不能有气泡、穿孔、破裂现象；其次，如果有印刷图文的，应目测其印刷图文是否清晰，如果图案不清晰，套印误差过大，也意味着产品质量存在一定的风险。

1. Appearance inspection: firstly, there shall be no bubbles, perforation and rupture; Secondly, if there are printed pictures and texts, visually check whether the printed pictures and texts are clear. If the patterns are not clear and the overprint error is too large, it also means that there are certain safety risks in product quality.

2. 印刷图文附着牢度检查：对于外层表面有印刷图文的自封袋，消费者可以用手在外包装袋上往返摩擦几次，看印刷图案是否掉颜色，好的自封袋其印刷图案应附着牢固，不会轻易掉色或有脱墨现象。

2. Inspection on the adhesion fastness of printed pictures and texts: for the self sealing bag with printed pictures and texts on the outer surface, consumers can rub back and forth on the outer packaging bag several times to see whether the printed pattern loses color. The printed pattern of a good self sealing bag should be firmly attached and will not easily fade or have deinking.

3. 夹链凸棱凹槽离合松紧适宜度的检查:目前我国对于普通无夹链的自封袋或密实袋尚无标准或行业标准，只针对夹链自封袋有行业标准（BB/T0014-2011），该标准要求，其反复使用寿命不少于10次，即反复使用开合应不少于10次，且对夹链配合、开启拉力都有规定。消费者可以手动通过开口处的凸楞与凹槽，反复多次进行封口、拉开，检查夹链是否松紧适宜及反复使用情况，过松或过紧都会影响使用。

3. Inspection on the tightness of the clutch of the convex edge groove of the chain clamp: at present, there is no national standard or industrial standard for ordinary self sealing bags or dense bags without chain clamp in China. There is only an industrial standard for the chain clamp self sealing bag (BB / t0014-2011), which requires that its repeated service life shall not be less than 10 times, that is, it shall be opened and closed for no less than 10 times, and the chain clamp shall be matched The opening tension is specified. Consumers can manually seal and open the clip chain repeatedly through the convex ridge and groove at the opening, and check whether the clip chain is suitable for tightness and repeated use. Too loose or too tight will affect the use.

4. 异味检查：由于许多消费者将自封袋用于密封食品，因此消费者在购买自封袋时一定要仔细闻一闻袋子上面是否有刺鼻的有机溶剂味道，这种味道有可能来自于劣质油墨印刷或塑料袋本身材质助剂引起，而质量好的自封袋应是无任何异嗅的，建议消费者在购买自封袋包装食品时尽量选择无印刷或有少量印刷的产品。

4. Odor inspection: since many consumers use self sealed bags to seal food, consumers must carefully smell whether there is a pungent smell of organic solvent on the bag when buying self sealed bags. This smell may be caused by poor ink printing or plastic bag material additives, and the self sealed bags with good quality should be free of any strange smell, It is suggested that consumers should try to choose products without printing or with a small amount of printing when purchasing self sealed bag packaged food.

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