Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Molded article, sheet, and container, and tubular body, straw, swab, and balloon stick

A technology of formed body and tubular body, which is applied in the field of straws, cotton swabs and balloon rods, and can solve the problems of impact resistance, poor puncture resistance, low biodegradability, poor stability, etc.

Active Publication Date: 2020-10-20
MITSUBISHI CHEM CORP
View PDF10 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0023] Patent Document 4 to Patent Document 5 disclose polylactic acid and polytetramethylene glycol succinate adipate or as an aliphatic-aromatic polyester Biodegradable resins such as polytetramethylene glycol adipate and terephthalate are used for straws, but the biodegradation degree of the proposed biodegradable resin at room temperature and the biodegradation degree in the sea are low, and it is not possible Substances that meet today's rapidly increasing demands for reducing environmental burdens
[0024] Patent Document 1 discloses a molded body using PHBH. However, because the molded body is hard and brittle, it has poor impact resistance and puncture resistance. The problem of poor stability

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Molded article, sheet, and container, and tubular body, straw, swab, and balloon stick
  • Molded article, sheet, and container, and tubular body, straw, swab, and balloon stick
  • Molded article, sheet, and container, and tubular body, straw, swab, and balloon stick

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0223] Hereinafter, specific embodiments of the present invention will be described in more detail using examples, but the present invention is not limited to the following examples unless the gist thereof is exceeded. In addition, the values ​​of various manufacturing conditions and evaluation results in the following examples have the meaning of preferred values ​​as the upper limit or lower limit of the embodiment of the present invention, and the preferred range may also be the value of the above upper limit or lower limit and the following The value of the examples, or the range specified by the combination of the values ​​of the examples.

[0224] [Measurement of melt flow rate (MFR) of resin used]

[0225] Based on JIS K7210 (1999), it measured at 190 degreeC and the load of 2.16 kg using the melt indexer. The unit is g / 10 minutes.

[0226] [use raw materials]

[0227] Details of the resins and inorganic fillers used in Examples and Comparative Examples are as follow...

Embodiment I-1、 comparative example I-1～3

[0269] Mix the raw materials shown in Table 1 in the ratio shown in Table 1, and mix with the screw diameter at 140°C The twin-screw extruder is extruded into strips, and pelletized by a granulator. The diameter of screw used for the obtained resin pellets A single-screw extruder using a coat hanger-type T-die with a width of 300 mm was used, and the pulling speed was adjusted at 150° C. so that the film thickness was 100 μm to obtain a sheet. The cooling temperature was set to 50° C., and a semi-mat type and an air knife were used as cooling rolls. The obtained sheet was subjected to measurement of water vapor transmission rate and oxygen transmission rate and a biodegradability test. The results are shown in Table 1.

[0270] [Table 1]

[0271] (Table 1)

[0272]

[0273] From Table 1 we can know the following content.

[0274] Comparative Example I-1, which does not contain the inorganic filler (C), has poorer water vapor barrier properties than Example I-1. Lik...

Embodiment I-2～3、 comparative example I-4～5

[0277] Mix the raw materials shown in Table 2 in the ratio shown in Table 2, and mix with the screw diameter at 140°C The twin-screw extruder is extruded into strips, and pelletized by a granulator. The obtained resin pellets were injection-molded at a mold temperature of 40° C. and a cylinder temperature of 150° C. to obtain ISO test pieces for mechanical property tests. For the obtained test piece, Charpy impact strength and H.D.T. measurement and biodegradability test were performed. The results are shown in Table 2.

[0278] The cooling time during injection molding is also described in Table 2. The cooling time is an index of formability, and the shorter the cooling time, the better the formability.

[0279] [Table 2]

[0280] (Table 2)

[0281]

[0282] As can be seen from Table 2, the heat resistance of Examples 1-2 and 3 containing aliphatic polyester resin (A), polyhydroxyalkanoate (B) and inorganic filler (C) within the prescribed range of the first inventio...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
melting pointaaaaaaaaaa
elastic modulusaaaaaaaaaa
melting pointaaaaaaaaaa
Login to View More

Abstract

A molded article obtained by molding an aliphatic polyester resin composition including an aliphatic polyester resin (A) including repeating units derived from an aliphatic diol and repeating units derived from an aliphatic dicarboxylic acid as main constituent units, a polyhydroxyalkanoate (B), and an inorganic filler (C). The polyhydroxyalkanoate (B) contains 3-hydroxybutyrate units and 3-hydroxyhexanoate units. The mass ratio of the aliphatic polyester resin (A) and the polyhydroxyalkanoate (B) is 40 / 60 to 10 / 90. The ratio in which the inorganic filler (C) is present with respect to the total amount of the aliphatic polyester resin (A), the polyhydroxyalkanoate (B), and the inorganic filler (C) is 15 to 50% by mass.

Description

technical field [0001] The present invention relates to a molded article, a sheet, and a container obtained by molding an aliphatic polyester-based resin composition. [0002] The present invention relates to a tubular body formed by molding an aliphatic polyester resin composition, a straw, a cotton swab, and a balloon stem using the tubular body. Background technique [0003] In recent years, the impact of plastic waste on the ecosystem, the generation of harmful gases during combustion, and global warming caused by a large amount of combustion heat have become causes that place a heavy burden on the global environment. As measures to solve this problem, the use of biodegradable plastics Development is rife. [0004] Among them, the carbon dioxide released when burning biodegradable plastics derived from plants does not increase the carbon dioxide in the atmosphere because it is a substance existing in the air. This situation is called carbon neutrality, and it is emphas...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08J5/18C08K3/013C08K3/26C08K3/34C08K3/36C08L67/04C08L101/16
CPCC08L101/16C08K3/34C08K3/36C08L67/04C08L67/02C08K3/26C08J5/18C08K3/013C08J2300/16C08J2367/02C08G63/06C08G63/16C08K3/346C08J2367/04C08K2003/265B29C45/0001B32B27/08B32B27/20B32B27/36B32B2250/24B32B2250/40B32B2307/7163B32B2439/06B32B2553/00
Inventor 稻垣舞楠野笃志
Owner MITSUBISHI CHEM CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com