成人爽A毛片免费啪啪,午夜香吻高清观看视频在线,狠狠挺进稚嫩学生小身体,无码成人性爽XO视频在线观看

濟(jì)南精美塑料包裝廠為您提供塑料袋、方便袋、塑料袋、食品塑料袋,相關(guān)信息發(fā)布和資訊展示,敬請(qǐng)關(guān)注!

濟(jì)南歷下精美塑料包裝廠

服務(wù)熱線: 18764138233

熱門:
行業(yè)動(dòng)態(tài)

食品包裝袋定制如何正確選擇?

來(lái)源:http://wujikeji.com/ 日期:2024-02-21

標(biāo)準(zhǔn)一:食品級(jí)原材料

Standard 1: Food grade raw materials

塑料包裝袋必須要達(dá)到食品級(jí),因?yàn)橹苯优c食品接觸,如果原材料不過關(guān),用了回收料或者工業(yè)級(jí)的材料,雖然在外觀上看不出區(qū)別,但是對(duì)食品會(huì)產(chǎn)生很大的影響,甚對(duì)人體造成一定的危害。

Plastic packaging bags must reach food grade because if they come into direct contact with food, if raw materials are not up to standard and recycled or industrial grade materials are used, although there may not be a noticeable difference in appearance, it can have a significant impact on food safety and even pose a certain risk to human health.

標(biāo)準(zhǔn)二:耐寒性

Standard 2: Cold resistance

冷凍食品通常在零下的環(huán)境中存儲(chǔ),很多情況下需要急速降溫,在這個(gè)情況下,包裝材料的力學(xué)強(qiáng)度會(huì)隨之下降,使袋子很容易碎。因此,耐寒性是冷凍食品包裝袋定制時(shí)特別需要特別注意的。

20230630034312402.jpg

Frozen food is usually stored in a sub zero environment, and in many cases, rapid cooling is required. In this case, the mechanical strength of packaging materials will decrease, making the bags easy to break. Therefore, cold resistance is particularly important when customizing frozen food packaging bags.

標(biāo)準(zhǔn)三:耐沖擊性

Standard 3: Impact resistance

為防止在運(yùn)輸、裝卸的過程中受到外力的破壞,對(duì)袋子的耐沖擊性也有較高的要求。

To prevent damage from external forces during transportation and loading and unloading, there are also high requirements for the impact resistance of bags.

標(biāo)準(zhǔn)四:熱封強(qiáng)度

Standard 4: Heat sealing strength

袋子的熱封強(qiáng)度不夠或者熱封溫度過高,都會(huì)導(dǎo)致封口不好。

Insufficient heat sealing strength or high heat sealing temperature of the bag can lead to poor sealing.

標(biāo)準(zhǔn)五:拉斷力、層間剝離強(qiáng)度

Standard 5: Breaking force and interlayer peel strength

包裝袋的力學(xué)性能如果比較差,很容易導(dǎo)致分層、無(wú)法達(dá)到應(yīng)有的承重作用。

If the mechanical properties of packaging bags are relatively poor, it is easy to cause layering and fail to achieve the expected load-bearing effect.

標(biāo)準(zhǔn)六:耐穿刺性

Standard 6: puncture resistance

冷凍后的食品一般比較堅(jiān)硬,運(yùn)輸及堆放過程中很容易將包裝袋穿破,因此冷袋子的耐穿刺性要求很高。

Frozen food is generally relatively hard, and it is easy to break through the packaging bags during transportation and stacking, so the puncture resistance of cold bags is required to be high.

標(biāo)準(zhǔn)七:抗壓性

Standard 7: Compression resistance

這一點(diǎn)主要針對(duì)在運(yùn)輸和搬運(yùn)過程中的跌落或者沖擊等對(duì)產(chǎn)品的損害。

This mainly focuses on the damage to the product caused by falls or impacts during transportation and handling.

本文由濟(jì)南塑料袋訂做友情奉獻(xiàn).更多有關(guān)的知識(shí)請(qǐng)點(diǎn)擊:http://wujikeji.com真誠(chéng)的態(tài)度.為您提供為的服務(wù).更多有關(guān)的知識(shí)我們將會(huì)陸續(xù)向大家奉獻(xiàn).敬請(qǐng)期待

This article is customized by Jinan plastic bags for friendship and dedication. For more information, please click: http://wujikeji.com Sincere attitude. We will provide you with comprehensive services. We will gradually contribute more relevant knowledge to everyone. Stay tuned

精人妻无码一区二区三区| 亚洲欧洲日产V| 色情版劳拉的性放荡A片| 亚洲中久无码永久在线观看同| 久久偷看各类wc女厕嘘嘘偷窃| 丰满白嫩少妇肉肉大HD| 亚洲久热无码AV中文字幕| 汽车上开两个的花苞| 在仓库玩50岁保洁女| 欧美性猛交XXXX黑人猛交| 人妻少妇久久中文字幕| 男女做爰爱免费视频A片| 色欲AV人妻精品一区二区三区| 欧美疯狂性受xxxxx喷水更猛| (无码视频)在线观看| 亚洲午夜AV久久久精品影院色戒| 无码人妻精品一区二区三区9厂| 无码视频一区二区三区| 性生交大片免费看| 华人少妇被黑人粗大的猛烈进| 精品少妇高潮蜜臀涩涩AV| 天美传媒mv在线看免费下载安装| 国产精久久一区二区三区| 中文人妻熟妇乱又伦精品| 中国熟妇色XXXX欧美老妇多毛| 狠狠色噜噜狠狠狠8888米奇 | 好大好湿好硬顶到了好爽视频 | 丰满人妻妇伦又伦精品APP| 日本熟妇XXXX乱| 国语做受对白XXXXX在线| 按摩硬进去做着做着软了| 欧美XXXXX高潮喷水| 朝鲜肥女BBBWBBBWBBB| 日韩一区二区三区精品| 末发育娇小性色XXXXX视频| 无码国产精品一区二区高潮| 免费无码又色又爽的视频软件| 国产精品国色综合久久| 男女做爰吃奶猛烈叫床视频电影| 第一次进去丫头的身体怎么办| 做爰高潮全过程免费的小黄文|