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,敬請關(guān)注!

濟(jì)南歷下精美塑料包裝廠

服務(wù)熱線: 18764138233

熱門:
常見問題
當(dāng)前位置:首頁-新聞資訊-常見問題

塑料袋縫合強(qiáng)度的要求及預(yù)防老化措施

來源:http://wujikeji.com/ 日期:2023-05-08

塑料袋縫合強(qiáng)度的要求
Requirements for stitching strength of plastic bags
濟(jì)南塑料袋在制作時(shí)如果是選用新舊質(zhì)料配混時(shí),要特別注意混合的均勻性,而在縫合的時(shí)分,關(guān)于強(qiáng)度也是有嚴(yán)格要求。無強(qiáng)度要求的編織袋上口鎖邊一周,針距可密,線可細(xì)。關(guān)于濟(jì)南塑料袋主體銜接部的抗拉強(qiáng)度,要求有需要到達(dá)基本強(qiáng)度的67%以上,底部銜接部的抗拉強(qiáng)度有需要到達(dá)基本強(qiáng)度的42%以上。
When making plastic bags in Jinan, if new and old materials are used for mixing, special attention should be paid to the uniformity of the mixing, and there are strict requirements for strength during stitching. The upper edge of the woven bag without strength requirements is locked for one week, and the needle spacing can be dense and the thread can be fine. Regarding the tensile strength of the main connection part of Jinan plastic bags, it is required to reach over 67% of the basic strength, and the tensile strength of the bottom connection part needs to reach over 42% of the basic strength.
其實(shí)影響塑料袋縫合強(qiáng)度的主要因素包含縫合線的品種和類型,針距巨細(xì),線跡,卷邊或者邊縫合線到袋邊的尺度,熱切和冷切方法等。
In fact, the main factors that affect the stitching strength of plastic bags include the variety and type of stitching thread, needle pitch, stitching, the scale of the curled or edge stitching thread to the bag edge, hot and cold cutting methods, and so on.
塑料袋老化的預(yù)防措施
Preventive measures for aging of plastic bags
1.塑料袋在自然環(huán)境下即在陽光直射的條件下,一周后其強(qiáng)度下降25%,兩周后會下降40%,基本上已不能運(yùn)用。也就是說塑料袋的貯存保管問題非常重要。
1. In natural environments, such as direct sunlight, the strength of plastic bags decreases by 25% after one week and by 40% after two weeks, making them basically unusable. That is to say, the storage and storage of plastic bags are very important.
濟(jì)南塑料袋
2.在塑料包裝水泥后放在露天環(huán)境受陽光直射,強(qiáng)度會急劇下降。
2. After plastic packaging of cement, placing it in an open environment under direct sunlight will cause a sharp decrease in strength.
3.塑料袋貯運(yùn)過程中溫度過高(集裝箱運(yùn)送)或遇到雨淋,都會導(dǎo)致其強(qiáng)度下降,然后達(dá)不到維護(hù)內(nèi)裝物品的質(zhì)量要求。
3. During the storage and transportation process of plastic bags, if the temperature is too high (transported in containers) or if they encounter rain, their strength will decrease, and they will not meet the quality requirements for maintaining the contents.
4.再產(chǎn)生料的過多參加也是加強(qiáng)塑料袋老化的原因之一。
Excessive participation in the production of raw materials is also one of the reasons for strengthening the aging of plastic bags.
塑料袋縫合強(qiáng)度的要求及預(yù)防老化的措施相關(guān)事項(xiàng)就講解到這里了,您對此還有想了解的事項(xiàng)或者需求,可以隨時(shí)來我們網(wǎng)站http://wujikeji.com留言或者撥打電話咨詢!
That's all for the requirements for the stitching strength of plastic bags and measures to prevent aging. If you have any further questions or needs, please feel free to visit our website at any time http://wujikeji.com Leave a message or call for consultation!

中文字日产幕码三区的做法大全| 国模雨珍浓密毛大尺度150P| 人妻互换一二三区激情视频| 成人精品视频WWW观看天堂| 九月婷婷人人澡人人添人人爽| 孰妇XXXXXX的性生话| 无码精品a∨在线观看十八禁 | 国产AV在线播放| 日本护士毛茸茸| 校花娇喘呻吟校长陈若雪视频| 人妻含泪让粗大挺进| 小洁和公H文翁17| 天堂网在线最新版WWW中文网| 高清播放器欧美大片| 社保15年后每月拿多少| 久久国产精品二国产精品| 中文字幕人成人乱码亚洲影| 亚洲精品第一国产综合野草社区| 欧美性受xxxx88喷潮 | 学长别揉了~流水了想要~| 中文字幕乱码中文字乱码| 色婷婷狠狠18禁久久yy | 粗大挺进朋友人妻淑娟| 他揉捏她两乳不停呻吟A片| 精品黑人一区二区三区久久| H视频在线观看| av无码国产精品午夜a片| 女人和拘做受全过程免费| 国产大片b站免费观看推荐 | 色狠狠一区二区三区香蕉| 最新亚洲人成无码网WWW电影| 国产精品毛片AV久久66| 琪琪婷婷五月色综合久久| 久久97久久97精品免视看秋霞| 三年片在线观看免费大全| 猛烈H继攵禁忌H| 国产自拍av| 高清白胖肥妇BBWBBW| 亚洲精品无码专区| 人人妻人人爽人人做夜欢视频| 国产精品无码久久久久不卡|