Composite, molded body, and method for producing molded body
A manufacturing method and composite technology, which can be used in papermaking, papermaking machines, flat products, etc., can solve the problems of difficulty in recycling the formed body, increased heat energy consumption, and inability to obtain sufficient adhesion.
Pending Publication Date: 2021-10-01
SEIKO EPSON CORP
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- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
[0009] In order to meet the above-mentioned requirements, it is preferable to use natural materials derived from plants, but in the invention described in Patent Document 1, if natural materials are used instead of synthetic resins, sufficient adhesive force cannot be obtained, making it difficult to Make the strength of the sheet excellent enough
In addition, when natural materials are used instead of synthetic resins, since a large amount of water is generally used, there are problems such as increased heat energy consumption to dry water when obtaining molded objects.
In addition, since natural materials tend to be modified when a large amount of water is added, it becomes difficult to recycle molded objects
Method used
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Examples
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Embodiment
[0208] Next, specific examples of the present invention will be described.
[0209] [4] Preparation of thermoplastic starch
preparation example 1
[0211] 12.0 parts by mass of starch (manufactured by Nippon Starch Chemical Co., Ltd., NSP-B1) with a weight average molecular weight of 140,000 and 2.0 parts by mass of starch (NSP-B1 manufactured by Nippon Starch Chemical Co., Ltd.) Glycerin, a plasticizer, is mixed to make thermoplastic starch. The thermoplastic starch obtained in this way had an average particle size of 10 μm.
preparation example 2～8
[0213] Thermoplastic starch was prepared in the same manner as in Preparation Example 1 except that the type of external plasticizer and the mixing ratio of starch and external plasticizer were set to the values shown in Table 1.
[0214] Table 1 collectively shows the conditions of the thermoplastic starch obtained in each preparation example.
[0215] Table 1
[0216] Table 1
[0217]
[0218] [5] Manufacture of composites and moldings
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Abstract
Provided are: a composite which can be suitably used in the production of a molded body having a desired shape even with little water being imparted while suppressing the use of a petroleum-derived material; a molded body; and a method for producing a molded body. The molded body has a desired shape while suppressing the use of a petroleum-derived material, and the method for producing the molded body can be suitably applied to the production of the molded body. The composite according to the present invention comprises: fibers; and a thermoplastic starch fused with the fibers. The method for producing a molded body according to the present invention comprises: a molding raw material preparation step for preparing a molding raw material comprising fibers and a thermoplastic starch; and a molding step in which the molding material is molded into a predetermined shape by heating and pressurizing the molding material.
Description
technical field [0001] The invention relates to a composite body, a molded body and a method for manufacturing the molded body. Background technique [0002] As a method for producing a sheet-like or film-like molded article using a fibrous substance, there is a papermaking method using water. [0003] In such a papermaking method, fibers are entangled with each other by causing a bonding force such as a hydrogen bond to act between the fibers, thereby exerting the bonding force, thereby obtaining sufficient strength in the molded article. [0004] However, such a manufacturing method needs to use a large amount of water, and in addition, dehydration, drying, etc. are required in the production process, and a lot of energy and time are required for this. In addition, the used water needs to be properly treated as waste water. In addition, most of the devices used in the paper-making method require large-scale public facilities and infrastructure such as water, electricity,...
Claims
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IPC IPC(8): C08L1/02C08L3/02C08K5/053
CPCC08L1/02C08L3/02C08K5/053D21F9/00D21H17/28C08K7/02C08J5/045C08J2303/02C08L29/04B27N3/002B27N3/04B27N3/18D21F13/00D21H21/52D21J3/12
Inventor 横川忍田中英树樋口尚孝关俊一
Owner SEIKO EPSON CORP