Molded article and molding method thereof

A technology for forming products and forming molds, applied in chemical instruments and methods, layered products, tubular articles, etc., can solve problems such as difficulty in dispersion, and achieve the effect of improving tensile elastic modulus and suppressing bending elastic modulus.

Active Publication Date: 2018-09-25
PANASONIC HLDG CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this dispersion process, since the cellulose-based fibers have hydrophilic groups, there is a problem that it is difficult to disperse them into the resin material

Method used

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  • Molded article and molding method thereof
  • Molded article and molding method thereof
  • Molded article and molding method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0035] figure 1 It is a perspective view which schematically shows the molded article of Embodiment 1 of this invention. in addition, figure 2 is a cross-sectional view of a molded product 1 according to Embodiment 1 of the present invention (viewed from the direction of the arrow figure 1 A in 1 sectional drawing). image 3 is an enlarged cross-sectional view of a molded product 1 according to Embodiment 1 of the present invention ( figure 2 B in 1 zoom in). Figure 1 ~ Figure 3 In , the same symbols are used for the same components.

[0036] like figure 1 and figure 2 As shown, the molded product 1 is formed in a box shape with one side open. Additionally, if image 3 As shown, the molded article 1 is formed of a resin material 3 in which cellulose-based fibers 2 are dispersed. image 3 This is a conceptual diagram, and the size and the like of the cellulose-based fibers 2 are different from the actual reduced scale. Below, refer to image 3 The distribution ...

Embodiment approach 2

[0062] Figure 4 It is a perspective view which schematically shows the molded article 11 which concerns on Embodiment 2 of this invention. in addition, Figure 5 is a cross-sectional view of a molded product 11 according to Embodiment 2 of the present invention (viewed from the direction of the arrow Figure 4 A in 2 sectional drawing). Image 6 is an enlarged cross-sectional view of a molded product 11 according to Embodiment 2 of the present invention ( Figure 5 B in 2 zoom in). Figure 4 ~ Figure 6 in, right with Figure 1 ~ Figure 3 The same symbols are used for the same components, and detailed descriptions are omitted.

[0063] like Figure 4 and Figure 5 As shown, the molded product 11 is formed in a cylindrical shape whose cross section is closed into a ring shape. Additionally, if Image 6 As shown, the molded product 11 is formed of a resin material 3 in which cellulose-based fibers 2 are dispersed. Image 6 This is a conceptual diagram, and the size a...

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Abstract

The invention provides a molded article and a molding method thereof. A molded article 1 is made of a resin material 3 containing cellulose fibers 2. The molded article 1 has a surface portion 4 thatis in a range satisfying TF<=0.1xT where T is the thickness of the molded article 1 and TF is a distance from the surface of the molded article 1, and the molded article 1 satisfies DF>=1.1xD where Dis an average cellulose concentration of the overall molded article 1 and DF is an average cellulose concentration of the surface portion 4. Thus, the molded article suppresses an increase in bendingmodulus while considerably improving a tensile modulus.

Description

technical field [0001] The present invention relates to a molded article produced by injection molding a cellulose-containing resin material and a molding method thereof. Background technique [0002] Conventionally, molded products produced by injection molding resin materials can obtain articles with a high degree of freedom in shape, and thus are widely used in automobile parts, home appliance parts, and other daily necessities. However, molded articles using only general-purpose resin materials have a disadvantage of low mechanical strength. [0003] Therefore, fibrous fillers are sometimes used as additives for the purpose of reinforcing general-purpose resin materials. As the fibrous filler, glass fiber, carbon fiber, natural fiber, etc. are used. These fibrous fillers have very high strength in the tensile direction. Therefore, by mixing fibrous fillers with general-purpose resin materials to form composite resin materials, it is possible to improve the mechanical s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C45/78B29C70/06
CPCB29C45/78B29C70/06B29C2945/76531B29K2201/00B29L2023/00B29C45/73B29C45/0005B29C45/0025B29C2045/7343B29C2945/76732B29C2945/76859B29K2105/12B29C45/14811C08J5/045B32B23/08B29K2309/08C08J2300/22B29K2995/002B29B15/12
Inventor 三田友纪西野彰马峰英生浜边理史名木野俊文
Owner PANASONIC HLDG CORP
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