Pliable plastic film and container using the same

Inactive Publication Date: 2008-07-24
OTSUKA PHARM FAB INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0029]According to the pliable plastic film of the present invention, when a container such as infusion solution bag is formed, the resulting container can be excellent in heat resistance. Even if a container provided with the easily releasable sealed portion is formed using the pliable plastic film of the present invention and this container is subjected to, for example, a sterilization treatment at a high tempe

Problems solved by technology

However, like the above medical container, even if the innermost layer of the container is formed of a mixture of two kinds of polypropylenes having different crystalline melting points Tm, when the crystalline melting point Tm of polypropylene having a higher crystalline melting point Tm is 160° C. or lower, there is such a problem that an allowable range of a heat sealing temperature, at which an easily releasable seal can be formed, becomes very narrow as 1° C., as is apparent from Examples described later.
Therefore, t

Method used

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  • Pliable plastic film and container using the same
  • Pliable plastic film and container using the same

Examples

Experimental program
Comparison scheme
Effect test

examples 2 to 8

[0116]In the same manner as in Example 1, except for employing the layer configuration shown in Table 3 below, a pliable plastic film was produced and also a container (infusion solution bag) 10 shown in FIG. 1 was produced using the film in the same manner as in Example 1.

TABLE 3Upper columns: Kinds of plastics constituting layersLower columns: Mixing ratios (weight ratios) of plasticsFirstRein-SecondSealingflexibleforcingflexibleOutermostlayerlayerlayerlayerlayer(30 μm)(90 μm)(20 μm)(90 μm)(20 μm)Example 2PP1 + PP2PP1 + PEEPP1PP1 + PEEPP1(95:5) (60:40)(60:40)Example 3PP1 + PP2PP1 + PEEPP1PP1 + PEEPP1(90:10)(60:40)(60:40)Example 4PP1 + PP2PP1 + PEEPP1PP1 + PEEPP1(80:20)(60:40)(60:40)Example 5PP1 + PP2PP1 + PEEPP1PP1 + PEEPP1(70:30)(60:40)(60:40)Example 6PP1 + PP2PP1 + PEEPP2PP1 + PEEPP1(85:15)(60:40)(60:40)Example 7PP1 + PP2PP1 + PEECOPPP1 + PEEPP1(85:15)(60:40)(60:40)Example 8PP1 + PP4PP1 + PEEPP1PP1 + PEEPP1 + PP2(85:15)(60:40)(60:40)(50:50)

[0117]With respect to the containers (i...

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Abstract

A pliable plastic film according to the present invention comprises a heat sealable sealing layer, wherein the sealing layer is made of a mixture of a propylene-α-olefin random copolymer having a crystalline melting point Tm of 135 to 145° C. and a polypropylene (PP) homopolymer having a crystalline melting point Tm of higher than 160° C.

Description

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Claims

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Application Information

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Owner OTSUKA PHARM FAB INC
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