毛片毛片毛片毛片毛片毛片毛片-毛片毛片毛是个毛毛片-毛片毛片免费看-毛片美女-国产视-国产视频 一区二区

News

What is the heat sealing temperature of the bag making machine

2021-10-25  824

In the process of bag making, the bag making machine needs a heat sealing temperature. Its function is to heat the adhesive film to an ideal viscous flow state. When selecting the heat sealing temperature, it needs to be comprehensively considered according to the characteristics of the heat sealing material, the thickness of the film, the times of hot pressing and the size of the heat sealing area. If the pressing times of the agreed parts increase, the temperature can be appropriately reduced. If the heat sealing area increases, the heat sealing temperature can be increased.

During the bag making process of the bag making machine, the heat sealing strength is affected by the heat sealing temperature. The higher the heat sealing temperature, the heat sealing strength will increase, but when the upper temperature limit is reached, the heat sealing strength will not change. If the heat sealing temperature is too high, the heat sealing material at the welding joint will be damaged, and the heat sealing strength of the seal and the impact resistance of the bag will be reduced. Therefore, the heat sealing temperature should be higher than the melting temperature of the heat sealing material, and the temperature should not be too high.

主站蜘蛛池模板: 日本成人一区二区三区 | 国产成人18黄网站在线观看网站 | 亚洲午夜精品久久久久久app | 欧美孕妇乱大交xxxx | 亚洲一区二区三区免费视频 | 亚洲清纯自偷自拍另类专区 | 国产精品欧美亚洲韩国日本不卡 | 午夜性色吃奶添下面69影院 | 2022av视频 | 欧美高清一区二区 | 长篇肉戏香艳完本小说排行榜 | 欧美日韩精品一区二区三区四区 | 五月天婷婷影院 | 国产三级精品久久三级国专区 | 成年黄网站色视频免费观看 | 99国产热 | 免费在线亚洲视频 | 黄页视频免费在线观看 | 日韩 欧美 国产 师生 制服 | 国产一级大片免费看 | 一级美国乱色毛片 | 色偷偷狠狠色综合网 | 99久久国产综合精品网成人影院 | 日本综合欧美一区二区三区 | 搞黄网站在线观看 | 欧美日韩一线 | 亚洲一区二区三区成人 | 综合天天| 国产色网址 | 91超级碰 | 久久久高清国产999尤物 | 亚洲逼| 99欧美精品 | 波多野结衣国产一区二区三区 | 夜夜操夜夜爽 | 久久a视频 | 欧美一区二区三区精品影视 | 色网在线视频 | 成人免费黄网站 | 老司机深夜福利视频 | 警察锅哥40集电视剧免费完整版 |