首页> 外国专利> Easy-opening packaging article made from a heat shrink film that shows a directional tear

Easy-opening packaging article made from a heat shrink film that shows a directional tear

机译:由热收缩膜制成的易打开包装物品,显示出方向性撕裂

摘要

A heat shrink packaging article (10, 10 ', 10A-10L, 22, 22', 22 ", 70) comprising a heat shrinkable multilayer film (11, 11 ', 23, 71) having a heat seal inner seal layer on itself in a thermal seal (16, 16 ', 16A-16L, 26, 27, 74, 75, 76), further comprising the article (10, 10', 10A-10L, 22, 22 ', 22 ", 70 ) a first side (17, 17 ', 17A-17L, 28, 77), a second side (18, 18', 18A-18L, 27, 78), and a skirt (19, 19 ', 19A-19L, 30, 31, 79, 80, 81) or head out of the heat seal (16, 16 ', 16A-16L, 26, 27, 74, 75, 76), comprising the skirt (19, 19', 19A-19L , 30, 31, 79, 80, 81) or head an article edge and a first tear initiator (20, 20 ', 20A-20L, 31, 82, 201, 207), the first tear initiator being (20 , 20 ', 20A-20L, 31, 82, 201, 207) on the first side (17, 17', 17A-17L, 28, 77) of the article (10, 10 ', 10A-10L, 22, 22' , 22 ", 70), further comprising the skirt (19, 19 ', 19A-19L, 30, 31, 79, 80, 81) or head of article a second tear initiator (21, 21 ', 21A-21L, 33, 83, 202, 206, 211), the second tear initiator being (21, 21', 21A-21L, 33, 83, 202, 206 , 211) on the second side (18, 18 ', 18A-18L, 27, 78) of the article (10, 10', 10A-10L, 22, 22 ', 22 ", 70), the article being (10, 10 ', 10A-10L, 22, 22', 22 ", 70) capable of having a first tear started manually and propagated manually on the first side (17, 17 ', 17A-17L, 28, 77) of the article (10 , 10 ', 10A-10L, 22, 22', 22 ", 70), and a second tear started manually and propagated manually on the second side (18, 18 ', 18A-18L, 27, 78) of article (10 , 10 ', 10A-10L, 22, 22', 22 ", 70), being both the first tear and the second tear capable of propagating in a machine direction from the respective first and second tear initiators (20, 20 ' , 31, 82, 21, 21 ', 33, 83), each tear spreading in the machine direction through the heat seal and down the length of the article lo (10, 10 ', 10A-10L, 22, 22', 22 ", 70), or through article (10, 10 ', 10A-10L, 22, 22', 22", 70), each tear being capable of manually propagating in the machine direction through and towards an opposite article edge, so that after using the multilayer film to manufacture a packaged product providing a product inside the article (10, 10 ', 10A-10L , 22, 22 ', 22 ", 70), the article (10, 10', 10A-10L, 22, 22 ', 22", 70) being sealed tightly around the product (10, 10', 10A-10L, 22 , 22 ', 22 ", 70) so that a package is formed and, following the above, by contracting the film (11, 11', 23, 71) around the product, the resulting package can be opened manually, and removed easily the product of the article (10, 10 ', 10A-10L, 22, 22', 22 ", 70), manually starting the tears in the machine direction from the first and second tear initiators (20, 20 ', 31 , 82, 21, 21 ', 33, 83), spreading manually tear them through the seal and towards the opposite edge of the article (10, 10 ', 10A-10L, 22, 22', 22 ", 70), showing the multilayer film (11, 11 ', 23, 71) a Peak load impact resistance of at least 1.97 N / μm (50 Newtons per thousandth of an inch) measured using ASTM D 3763-95A, containing at least one layer of the multilayer film (11, 11 ', 23, 71) a mixture of incompatible polymers, wherein the mixture comprises a mixture of ethylene / alpha-olefin copolymer and ethylene / vinyl acetate copolymer having a vinyl acetate content of 10 to 50 percent by weight based on weight of the copolymer, the mixture containing the ethylene / alpha-olefin copolymer in an amount of 80 to 35 percent by weight based on the weight of the mixture and the ethylene / vinyl acetate copolymer in an amount of 20 to 65 percent by weight based on the weight of the mixture, the multilayer film containing the mixture in an amount of 20 to 95 percent in weight, based on the weight of the multilayer film, and in which the multilayer film has been biaxially oriented in solid state and has a total free shrinkage, measured by ASTM D 2732, from 15 to 120 percent at 85 ° C (185 ° F ), in which the multilayer film has a total thickness of 38 to 254 μm (1.5 to 10 thousandths of an inch).
机译:一种热收缩包装制品(10、10′,10A-10L,22、22′,22″,70),其包括在其自身上具有热封内密封层的热收缩多层膜(11、11′,23、71)。在热密封件(16、16',16A-16L,26、27、74、75、76)中,还包括制品(10、10',10A-10L,22、22',22“,70)第一面(17、17',17A-17L,28、77),第二面(18、18',18A-18L,27、78)和裙边(19、19',19A-19L,30, 31、79、80、81)或从热封(16、16',16A-16L,26、27、74、75、76)伸出,包括裙部(19、19',19A-19L,30) ,31、79、80、81)或朝向物品边缘和第一撕裂引发剂(20、20',20A-20L,31、82、201、207),第一撕裂引发剂为(20、20',20A物品(10、10',10A-10L,22、22',22“)的第一面(17、17',17A-17L,28、77)-20L,31、82、201、207), 70),还包括裙部(19、19',19A-19L,30、31、79、80、81)或物品的头部,第二撕裂引发剂(21、21',21A-21L,33、83、202 ,206,211),撕裂引发剂是制品(10、10')的第二面(18、18',18A-18L,27、78)的(21、21',21A-21L,33、83、202、206、211) ,10A-10L,22、22',22“,70),该物品是(10、10',10A-10L,22、22',22”,70)能够手动开始第一撕裂并手动繁殖的物品在物品(10、10',10A-10L,22、22',22“,70)的第一面(17、17',17A-17L,28、77)上,第二根撕裂手动开始并传播手动在物品(10、10',10A-10L,22、22',22“,70)的第二面(18、18',18A-18L,27、78)上,分别是第一撕裂和第二撕裂能够从相应的第一和第二撕裂引发剂(20、20',31、82、21、21',33、83)沿纵向传播的撕裂,每种撕裂均通过热封沿纵向传播,并沿着物品的长度lo(10、10',10A-10L,22、22',22“,70),或贯穿物品的长度(10、10',10A-10L,22、22',22”,70),每个眼泪都可以手动传播机器方向穿过并朝向相对的商品边缘,以便在使用多层膜制造包装产品之后,在商品内部提供商品(10、10',10A-10L,22、22',22”,70),将制品(10、10',10A-10L,22、22',22“,70)紧密密封在产品(10、10',10A-10L,22、22',22”,70)周围形成包装,并按照上述步骤,通过使产品周围的薄膜(11、11',23、71)收缩,可以手动打开所得包装,并轻松取出制品(10、10')的产品, 10A-10L,22、22',22“,70),从第一和第二撕裂引发器(20、20',31、82、21、21',33、83)沿机器方向手动开始撕裂,手工将它们撕裂通过密封并朝着物品(10、10',10A-10L,22、22',22'',70)的相对边缘散开,显示出多层薄膜(11、11',23、71)峰值载荷抗冲击强度至少为1.97 N /μm(50牛顿/千分之一米nch)是使用ASTM D 3763-95A测量的,至少包含一层多层薄膜(11、11',23、71)的不相容聚合物的混合物,其中该混合物包含乙烯/α-烯烃共聚物和乙烯的混合物/乙酸乙烯酯共聚物,其乙酸乙烯酯含量为共聚物重量的10至50重量%,该混合物包含乙烯/α-烯烃共聚物的量为混合物重量的80-35重量%基于混合物的重量,乙烯/乙酸乙烯酯共聚物的含量为20-65重量%,包含多层混合物的多层膜的重量为20-95重量%。 ,其中多层膜已在固态下进行了双轴拉伸,并具有通过ASTM D 2732测量的总自由收缩率,在85°C(185°F)下为15%至120%,其中多层膜具有厚度为38至254μm(1.5至千分之一英寸)。

著录项

相似文献

  • 专利
  • 外文文献
  • 中文文献
获取专利

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号