公开(公告)号：US06631605B1

公开(公告)日：2003-10-14

申请号：US09926524

申请日：2002-02-04

申请人： Yves Quintin ,  Roland Basque ,  André Pitre

发明人： Yves Quintin ,  Roland Basque ,  André Pitre

IPC分类号： B65B900

CPC分类号： B65B51/30 ,  B29C53/50 ,  B29C65/222 ,  B29C65/38 ,  B29C65/743 ,  B29C66/1122 ,  B29C66/4312 ,  B29C66/4322 ,  B29C66/49 ,  B29C66/71 ,  B29C66/723 ,  B29C66/81419 ,  B29C66/81427 ,  B29C66/81457 ,  B29C66/83221 ,  B29C66/849 ,  B29C66/8491 ,  B29L2009/00 ,  B32B27/32 ,  B65B9/20 ,  B65B51/303 ,  Y10T428/31913 ,  B29K2023/14 ,  B29K2023/12 ,  B29K2023/0625 ,  B29K2023/0616 ,  B29K2023/06 ,  B29K2023/0633 ,  B29K2023/00

摘要： The multi-layer film structure having an inner sealing layer (36) which comprises metallocene resin, a core (38) which includes polypropylene copolymer and an outer layer (37) and wherein the multi-layer film structure has a thickness (X) within a range between about 50 and 70 microns (2.0-2.75 mil). By utilizing this thin film with specific properties the sealers may be operated at lower temperatures thereby resulting in an energy saving and they produce seals having improved seal strength of 30% to 50% as compared with known prior mono-layer polyethylene film. The seal initiation temperature is reduced by 10° C. to 15° C. and the film exhibits an improved machine direction tensile strength of 25% to 40% and an improvement of 30% to 50% in puncture resistance as compared with a 76 microns (3 mil) mono-layer polyethylene film. This results in a reduction in the sealing cycle time and an increase in the throughput of the machine. This results in a liquid pouch having a substantial improvement in drop test performance, puncture resistance and seal strength. The machine accomplishes better seals with less energy, requires less downtime for roll changes and maintenance and increase throughput.

摘要翻译： 具有内密封层（ 36 PDAT>）的多层膜结构，其包含茂金属树脂，芯（ 38 PDAT>） 其包括聚丙烯共聚物和外层（ 37 PDAT>），其中多层膜结构的厚度（X）在约50至70微米的范围内（2.0- 275万）。 通过利用具有特定性质的该薄膜，密封剂可以在较低温度下操作，从而导致节能，并且与现有的已知单层聚乙烯薄膜相比，它们产生的密封强度提高了30％至50％。 密封起始温度降低10℃至15℃，并且与76微米相比，该膜在抗穿刺性方面表现出25％至40％的改善的机器方向抗拉强度和30％至50％的改进。 （3密耳）单层聚乙烯膜。 这导致密封循环时间的减少和机器的生产量的增加。 这导致液体袋具有显着提高跌落测试性能，抗穿刺性和密封强度。 该机器以更少的能量实现更好的密封，需要较少的滚动更换和维护的停机时间，并提高吞吐量。