How to judge whether the self sealing bag is qualified

1. 外觀檢查：首先，不能有氣泡、穿孔、破裂現象；其次，如果有印刷圖文的，應目測其印刷圖文是否清晰，如果圖案不清晰，套印誤差過大，也意味著產品質量存在一定的安全風險。

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. 印刷圖文附著牢度檢查：對于外層表面有印刷圖文的自封袋，消費者可以用手在外包裝袋上往返摩擦幾次，看印刷圖案是否掉顏色，好的自封袋其印刷圖案應附著牢固，不會輕易掉色或有脫墨現象。

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. 夾鏈凸棱凹槽離合松緊適宜度的檢查:目前我國對于普通無夾鏈的自封袋或密實袋尚無國家標準或行業標準，只針對夾鏈自封袋有行業標準（BB/T0014-2011），該標準要求，其反復使用壽命不少于10次，即反復使用開合應不少于10次，且對夾鏈配合、開啟拉力都有規定。消費者可以手動通過開口處的凸楞與凹槽，反復多次進行封口、拉開，檢查夾鏈是否松緊適宜及反復使用情況，過松或過緊都會影響使用。

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. 異味檢查：由于許多消費者將自封袋用于密封食品，因此消費者在購買自封袋時一定要仔細聞一聞袋子上面是否有刺鼻的有機溶劑味道，這種味道有可能來自于劣質油墨印刷或塑料袋本身材質助劑引起，而質量好的自封袋應是無任何異嗅的，建議消費者在購買自封袋包裝食品時盡量選擇無印刷或有少量印刷的產品。

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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