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Infusion bag

An infusion bag and acrylic technology, applied in the field of infusion bags, can solve problems such as transparency, insufficient gloss, not being able to withstand bag drop, loss of softness, etc., and achieve excellent transparency, less odor, and excellent balance

Active Publication Date: 2012-03-28
JAPAN POLYPROPYLENE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, medical bags made of these laminates do not have a high level of balance between transparency, strength, flexibility, and heat resistance.
[0017] In addition, there is also proposed a medical bag (Patent Document 10) that uses a sheet-like material made of polypropylene having a melting point of 140° C. or less as a formation layer, but this The softness of the medical bag is lost after heat sterilization, and there is a problem that it cannot withstand the bag drop test
[0018] In addition, a laminate has also been proposed (Patent Document 11), which sequentially includes at least an outer layer, an intermediate layer, and an inner layer, the outer layer is composed of a polypropylene resin, and the intermediate layer is composed of the following copolymer: , the copolymer contains low crystalline components and high crystalline components, and is formed from ethylene and α-olefins with 3 to 18 carbon atoms; however, it still has the problem of insufficient transparency and gloss after steam sterilization treatment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0190] Sample preparation: 1 mg / mL sample solution was prepared using o-dichlorobenzene (containing 0.5 mg / mL of BHT), and the sample was dissolved at 140° C. for about 1 hour.

[0191] By plotting the elution ratio against the molecular weight measured by GPC, the amount of components with a molecular weight of 5000 or less can be determined.

[0192] (8) Intrinsic viscosity [η]cxs

[0193] In the propylene-ethylene block copolymer (A), stickiness and extravasation are particularly problematic because of components soluble in xylene at room temperature (CXS components), so the intrinsic viscosity [η] (dl / g ) is preferably measured on the CXS component.

[0194] Here, CXS is obtained as follows. The propylene-ethylene block copolymer was dissolved in p-xylene at 130°C to form a solution, and then left to stand at 25°C for 12 hours. The precipitated polymer was removed by filtration, and p-xylene was distilled off from the filtrate to obtain the CXS fraction. The intrinsic ...

Embodiment

[0410] Next, in order to more specifically and clearly describe the present invention, the present invention will be described in comparison of Examples and Comparative Examples, and the rationality and effectiveness of the constituent elements of the present invention will be proved in practice.

[0411] In addition, the evaluation methods and resins used in Examples and Comparative Examples are as follows.

[0412] [Measuring methods of various physical properties of propylene-ethylene block copolymer (A)]

[0413] 1) Melt flow rate (MFR)

[0414] According to the method condition M of JIS K7210A, the melt flow rate was tested under the following conditions.

[0415] Test temperature: 230°C

[0416] Rated weight: 2.16kg

[0417] Die shape: diameter 2.095mm length 8.00mm

[0418] 2) TREF

[0419] The sample was dissolved in o-dichlorobenzene (containing 0.5 mg / mL of BHT) at 140° C. to prepare a solution. The solution was introduced into the TREF column at 140°C, then co...

manufacture example PP-1A

[0474] [Polymerization Production Example A-1]

[0475] Preparation of prepolymerized catalyst

[0476] (chemical treatment of silicates)

[0477] Add 3.75 liters of distilled water into a 10-liter glass separatory flask equipped with a stirring paddle, and then slowly add 2.5 kg of concentrated sulfuric acid (96%). 1 kg of montmorillonite (Benclay SL manufactured by Mizusawa Chemical Co., Ltd., average particle size = 25 μm, particle size distribution = 10 μm to 60 μm) was further dispersed therein at 50° C., then the temperature was raised to 90° C., and maintained at this temperature for 6.5 hours. After cooling to 50°C, the slurry was filtered under reduced pressure to recover the filter cake. 7 liters of distilled water were added to the filter cake to reslurry and then filtered. This washing procedure was repeated until the pH of the washing liquid (filtrate) exceeded 3.5. The filter cake thus recovered was dried at 110° C. overnight in a nitrogen atmosphere. The weig...

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PUM

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Abstract

The invention discloses a transfusion bag, which is moulded by polypropylene film of random propylene-ethylene block copolymer (A), wherein the (A) preparing method comprises the following steps through metallocene catalyst: obtaining 30-95% random propylene-ethylene block copolymer (A1) with only 7% propylene or ethylene; producing 70-5% random propylene-ethylene block copolymer (A2) with more ethylene weight than (A1) by 3-20%. (A) Flux fluid rate is 1-20g / 10 min, which displays single peak within not more than 0 deg.c in the temperature-consumption angle tangent curve to obtain DMA.

Description

technical field [0001] The present invention relates to an infusion bag. Specifically, the present invention relates to an infusion bag with less extravasation and high hygienic properties. There is little decrease in transparency, and the opening and anti-blocking properties are also good. Background technique [0002] Making full use of its excellent mechanical properties such as rigidity and optical properties such as excellent transparency and gloss, polypropylene films are widely used as packaging films for food and general groceries and medical bags, and also because of their excellent economical properties. The demand for it as a film material is further increasing due to reasons such as formability and environmental protection. [0003] However, in recent years, when used for these purposes, due to the tight adhesion between the films, there has been a problem of adhesion that is difficult to peel off or the problem of poor opening during bag making and use. In addi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61J1/10C08J5/18C08L53/00B29C49/00
Inventor 高桥邦宣北出慎一香西育中村康则川瀬三树夫
Owner JAPAN POLYPROPYLENE CORP
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