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Method for manufacturing patterned chair and patterned chair manufactured by that manufacturing method

A manufacturing method and pattern technology, which is applied in the field of manufacturing chairs with patterns, can solve problems such as breaking or peeling, lifting, and insufficient, and achieve the effect of reducing costs

Inactive Publication Date: 2011-08-31
吉野 戈普
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, when the chair is to be manufactured by the gas injection method, although the above-mentioned resin has been developed, no matter what kind of resin it is, as long as it is an integrally molded chair made of plastic, there is the following problem: it has a strong The image of an outdoor-type cheap garden chair does not match the large mold investment
That is, first, the price of acrylic resin plate, which is the preferred raw material for vacuum forming, is high (about 3 to 5 times that of injection molding)
Second, it is difficult to form three-dimensional shapes and cannot form complex shapes
Third, since there are no ribs, etc., the feet cannot be installed smoothly
Fourth, only materials such as Japanese paper, cloth, and plants can be placed
Fifth, since the board is bent, the wall thickness of each part is approximately constant, or the "bent part from the seat part to the back part" which receives the most force becomes thinner instead, and this bent part has no rigidity, so it may break at this point or strip
However, for chairs, since both sides of the base material are exposed to the surface and are rubbed, from this point of view, there is no application of the "in-mold molding method" which can achieve high-resolution patterns but has weak strength on one side in the chair
[0018] As mentioned above, there are strong expectations for products whose design can be changed according to the use environment and detailed needs of users, and the new trend of small batches and multiple varieties, especially for chairs, floor mats, stationery, etc. , the demander's unique design, etc. are constantly increasing. However, the above-mentioned known technology is not sufficient to maintain the mechanical strength on both sides of the base material and to impart delicate patterns (graphics) to the plastic. It is expected that a new Technology
[0019] In particular, design chairs made of plastic, whose selling point is the beauty of the design, require the fineness and beauty of patterns and patterns, rigidity, bending strength, high productivity, and low cost that can be used in contract specifications. No product meeting these conditions exists so far

Method used

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  • Method for manufacturing patterned chair and patterned chair manufactured by that manufacturing method
  • Method for manufacturing patterned chair and patterned chair manufactured by that manufacturing method
  • Method for manufacturing patterned chair and patterned chair manufactured by that manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078]

[0079] For the purpose of partially transferring the pattern to a relatively flat part of the mold as a test product, the roll film printed with the pattern was filled into the mold ( Figure 4 (1)), and injection-molding a colorless and transparent polycarbonate resin to form the first layer ( Figure 4 (2)). The thickness of the first layer was 3 mm at the waist portion of the central portion and 1.8 mm at the peripheral portion.

[0080]

[0081] Make the mold (core) with the pattern transferred backward ( Figure 4 center left) to create a void for forming the second layer. The same colorless and transparent polycarbonate resin was injection-molded in the gap to form the second layer ( Figure 4 (3)). The thickness of the second layer was 3 mm at the waist portion of the central portion and 1.8 mm at the peripheral portion. Then, take out the product and remove the film protruding from the surrounding ( Figure 4 (4)).

[0082] The pattern is sandwiched...

Embodiment 2

[0085]

[0086] The film 12 that is printed with patterns is filled between the mold 14a and the mold 14b corresponding to the seat part and the backrest part ( Figure 5 (1)), and inject a colorless and transparent polyester-based resin (Eastman-Durastar, manufactured by Istman Chemical Co., Ltd., Eastman-Durastar) as the transparent resin A from the injection port 21, thereby injecting the first layer 19 on one side. forming( Figure 5 (2)).

[0087]

[0088] The mold 14a that is transferred with pattern is backward ( Figure 5 The right side in (3)) shifts to form a void 15 for injection molding the transparent resin B of the second layer 20 . In this gap, the same colorless and transparent polyester resin as the transparent resin A is injected from the same injection port 21 as that used to inject the transparent resin A in the step (1) as the transparent resin B, and the second layer 20 is injection molded. ( Figure 5 (3)).

[0089] Then, the patterned chair as ...

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Abstract

Provided is a patterned chair wherein an elaborate pattern (graphic) made of a transparent material is imparted such that the pattern can be seen clearly from the both sides of the material and the pattern is resistant to mechanical contact from both sides. A method for manufacturing a patterned chair where the sitting portion and / or the backrest portion is (are) formed of a base material having such a configuration that the opposite sides of a pattern are sandwiched by transparent resin A and transparent resin B, characterized in that the base material is produced by carrying out a step (1) for inserting a film having a printed pattern into a die at the time of injection molding the transparent resin A, and transferring the pattern printed on the film onto the surface of the transparent resin A simultaneously with injection molding of the transparent resin A, and then carrying out a step (2) for making an air gap between the pattern on the transparent resin A and a die by moving backward the die on the side where the film having a printed pattern is inserted, and injection molding the transparent resin B in that air gap.

Description

technical field [0001] The present invention relates to a method for manufacturing a patterned chair, and more specifically, relates to a method for manufacturing a patterned chair and a patterned chair manufactured by the manufacturing method: the patterned chair is composed of a base material having A form in which the pattern printed on the film is sandwiched between transparent resin. Background technique [0002] Plastic chairs have been popular since the 1990s. Centering on the furniture industry in Italy, which dominates the world market for furniture, it has spread to the entire world with its unique form and low price of highly malleable polypropylene. This type of chair is low in price and simple in shape because it is mainly sold in the contract market aiming at receiving a large number of orders at once. [0003] An attempt was also made to integrally mold the end of the leg to the backrest without using metal legs. Since the structure is only made of plastic,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A47C7/16A47C5/00A47C5/12B29C45/14
CPCA47C7/16B29C45/14827A47C5/12B29C45/1635B29C45/1671
Inventor 吉野戈普
Owner 吉野 戈普