Chilled beef packaging film
    3.
    发明授权
    Chilled beef packaging film 失效
    冷冻牛肉包装膜

    公开(公告)号:US4777095A

    公开(公告)日:1988-10-11

    申请号:US906046

    申请日:1986-09-11

    IPC分类号: B32B27/08 B32B27/28 B65D65/40

    摘要: A composite film suitable for shrink-packaging bony cut meat, including at least one oxygen-impermeable layer, and at least one heat sealable, surface layer formed of a thermoplastic resin, said film having the following physical properties:C.sub.L .gtoreq.15C.sub.T .gtoreq.1580.ltoreq.S.sub.L .ltoreq.25080.ltoreq.S.sub.T .ltoreq.250T.gtoreq.1.2S.sub.L +60T.gtoreq.1.2S.sub.T +60wherein C.sub.L and C.sub.T represent the thermal contraction percentages (%) of the film measured in 90.degree. C. hot water in the longitudinal and transverse directions, respectively, S.sub.L and S.sub.T represent the thermal contraction stresses (g/cm) of the film measured in 90.degree. C. hot water in the longitudinal and transverse directions, respectively, and T represents the piercing strength (g) of the film measured in 90.degree. C. hot water.

    摘要翻译: 一种适用于收缩包装骨切肉的复合膜,包括至少一个不透氧层,以及由热塑性树脂形成的至少一个可热封表面层,所述膜具有以下物理性能:CL> / = 15 CT 其中CL和CT表示热收缩百分比(%),其中CL和CT表示热收缩百分比(%),其中CL和CT表示热收缩百分比(%), 的膜在纵向和横向上分别在90℃热水中测量,SL和ST分别表示在90℃热水中纵向和横向测量的膜的热收缩应力(g / cm) ,T表示在90℃热水中测定的膜的穿刺强度(g)。

    Thermally shrinkable film having a liquid detecting function and a
package using the same
    4.
    发明授权
    Thermally shrinkable film having a liquid detecting function and a package using the same 失效
    具有液体检测功能的热收缩膜和使用其的包装

    公开(公告)号:US5108803A

    公开(公告)日:1992-04-28

    申请号:US532147

    申请日:1990-06-01

    IPC分类号: B65D75/00

    摘要: A thermally shrinkable film with a liquid detecting function is prepared by coating or printing one side of the film with an ink which turns color or dissolves upon contact with a liquid. An item or object to be packaged is packaged in a thermally shrinkable film. The thermally shrinkable film and the package are useful for detecting a liquid leaking from the packed item or object, or entering into the package from the outside. This permits a visual inspection of the quality of the item or object packaged therein or of contamination by a foreign substance.

    摘要翻译: 具有液体检测功能的热收缩膜通过用与液体接触变色或溶解的油墨涂布或印刷薄膜的一面来制备。 待包装的物品或物体被包装在热收缩膜中。 热收缩膜和包装件可用于检测从包装物品或物体泄漏的液体,或从外部进入包装。 这允许目视检查包装在其中的物品或物体的质量或异物的污染。

    Heat shrinkable composite film and packaging method using same
    7.
    发明授权
    Heat shrinkable composite film and packaging method using same 失效
    热收缩复合膜及其包装方法使用

    公开(公告)号:US5001016A

    公开(公告)日:1991-03-19

    申请号:US515149

    申请日:1990-04-26

    IPC分类号: B32B27/32 G02B6/44

    摘要: A heat shrinkable composite film comprises a core layer formed of (a) a straight chain, low density polyethylene having a density of 0.890-0.905 g/cm.sup.3 and a Vicat softening point of 60.degree.80.degree. C. and/or (b) a copolymer of propylene and one or more .alpha.-olefins with 2-8 carbon atoms having a Vicat softening point of 70.degree.110.degree. C., and two outer layers laminated over the opposite surfaces of the core layer and each formed of (c) a crystalline polypropylene resin having a melting point of 135.degree.150.degree. C., the core layer having a thickness of 30-80% of the total thickness of the outer layers and the core layer.

    Heat shrinkable composite film and packaging method using same
    8.
    发明授权
    Heat shrinkable composite film and packaging method using same 失效
    热收缩复合膜及其包装方法使用

    公开(公告)号:US4923722A

    公开(公告)日:1990-05-08

    申请号:US162451

    申请日:1988-03-01

    IPC分类号: B32B27/32 G02B6/44

    摘要: A heat shrinkable composite film comprises a core layer formed of (a) a straight chain, low density polyethylene having a density of 0.890-0.905 g/cm.sup.3 and a Vicat softening point of 60.degree.-80.degree. C. and/or (b) a copolymer of propylene and one or more .alpha.-olefins with 2-8 carbon atoms having a Vicat softening point of 70.degree.-110.degree. C., and two outer layers laminated over the opposite surfaces of the core layer and each formed of (c) a crystalline polypropylene resin having a melting point of 135.degree.-150.degree. C., the core layer having a thickness of 30-80% of the total thickness of the outer layers and the core layer.

    摘要翻译: 一种热收缩复合膜包括由(a)直链密度为0.890-0.905g / cm3,维卡软化点为60-80℃的直链低密度聚乙烯形成的芯层和/或(b) 丙烯和一种或多种具有维卡软化点为70-110℃的2-8个碳原子的α-烯烃的共聚物,以及层叠在芯层的相对表面上的每个由(c )熔点为135-150℃的结晶聚丙烯树脂,芯层的厚度为外层和芯层总厚度的30-80%。

    Process for preparing a thermally shrinkable multilayer film
    9.
    发明授权
    Process for preparing a thermally shrinkable multilayer film 失效
    制备热收缩多层膜的方法

    公开(公告)号:US4731214A

    公开(公告)日:1988-03-15

    申请号:US921161

    申请日:1986-10-21

    摘要: The process for preparing a thermally shrinkable multilayer film composed of a polyamide resin layer as one surface layer and a sealant material layer as the other surface layer includes the step of causing the polyamide resin layer of the oriented laminate film to absorb water in the amount of 7.0% by weight or more before or during the thermal treatment. The laminate film is then dried so as to cause the polyamide resin layer to make the water content in the range form 2.5% by weight to 6.5% by weight while maintaining the oriented laminate film at temperatures of 90.degree. C. or lower after or during the thermal treatment. The thermally shrinkable multilayer film thus prepared is suitable for thermally shrinking packing foods such as roast meat or fresh cut meat.

    摘要翻译: 制备作为一个表面层的聚酰胺树脂层和作为另一个表面层的密封剂材料层构成的热收缩多层膜的方法包括以下步骤:使取向层压膜的聚酰胺树脂层以 在热处理之前或期间为7.0重量%以上。 然后干燥该层压膜,使得聚酰胺树脂层的水含量在2.5重量%至6.5重量%的范围内,同时在定向层压膜在90℃或更低的温度下或之后保持 热处理。 如此制备的热收缩多层膜适用于热收缩包装食品如烤肉或鲜切肉。