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Paper pulp packing material and mfg. method thereof

A technology of packaging materials and manufacturing methods, applied in the field of pulp sheets and pulp molded products, can solve the problems of lack of softness, poor impact cushioning, hardness, etc., and achieve the effect of not being easily scratched

Inactive Publication Date: 2002-02-06
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, packaging materials such as pulp molded products or pulp molded products in the past are hard and lack flexibility compared with products of synthetic resins such as polystyrene and polyethylene, and have poor impact cushioning properties. , In the process of unpacking, there is a problem of scratching the inner packaging

Method used

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  • Paper pulp packing material and mfg. method thereof
  • Paper pulp packing material and mfg. method thereof
  • Paper pulp packing material and mfg. method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0026] figure 1 It is an explanatory diagram of the pulp sheet manufacturing method according to Embodiment 1 of the present invention, figure 2 Flow chart of its fabrication method.

[0027] First, waste paper (pulp) such as newspapers, magazines or corrugated cardboard as raw materials is added to the pulper, and water is added to soften and disperse ( figure 1 (a, b), figure 2 , S1-S2). Next, store the impregnated, softened and dispersed raw material in No. 1 storage tank, and slowly supply it to a stock adjuster. Cross-linking agents such as epichlorohydrin make the pulp fiber cross-linking reaction, store the adjusted raw material in the No2 storage tank, and slowly supply it to the concentration regulator to adjust its concentration ( figure 1 (c), figure 2 , S3-S6). Then, utilizing the raw material adjusted in this way, it is formed into a pulp sheet ( figure 1 (d), figure 2 , S7), it is dried to obtain a cross-linked pulp for the first layer ( figure 1 (e)...

Embodiment approach 2

[0034] Figure 4 It is an explanatory diagram of the pulp sheet production method according to Embodiment 2 of the present invention. Here, PET (polyethylene terephthalate) or the above-mentioned biodegradable paper is sprayed and coated on one or both sides of the pulp sheet 4 mainly composed of uncrosslinked waste paper (pulp) and the like. After the powder of plastics 5 such as permanent plastics, heat treatment is carried out to it, pulp sheet 4 and plastics 5 are integrated, thus manufacture synthetic pulp sheet 6.

[0035] The synthetic pulp sheet 6 of making like this, though not having very high impact cushioning property, the pulp sheet without cross-linking treatment has shape retention, and the smoothness of the plastic surface coated on it is difficult for being scratched by the packaged object, And it is not easy for dust and dust to adhere. Therefore, it can be used as an outer packaging material or packaging material where a large impact is not generated.

[...

Embodiment approach 3

[0039] Figure 5 A flowchart illustrating a method for producing a synthetic pulp molded article according to Embodiment 3 of the present invention is shown.

[0040] Here, first put waste paper (pulp) such as newspapers, magazines or corrugated cardboard as raw materials into the pulper, add water to soak, soften and disperse ( Figure 5, S31-S32). Next, store the raw material in the No1 storage tank ( Figure 5 , S33), it is slowly supplied to the raw material adjustment machine, while iron flakes and foreign matter are removed, the components that have not been soaked and softened are soaked and softened, and cross-linking agents such as epichlorohydrin are added at the same time to make the pulp fibers undergo cross-linking reactions ( Figure 5 , S34), store the adjusted raw material in the No2 storage tank ( Figure 5 , S35), it is slowly supplied to the concentration regulator to adjust its concentration ( Figure 5 , S36). Then, the raw material is entered into a ...

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Abstract

A pulp packing material comprising: a first layer containing crosslinked pulp as a main component; and a second layer containing non-crosslinked pulp or biodegradable plastics as a main component, which are produced by sheet making, wherein the first and second layers are stuck and laminated onto each other.

Description

technical field [0001] The present invention relates to a pulp sheet, a pulp molded product for containers, trays, etc. as a packaging material (including wrapping material), and a method for producing them. Background technique [0002] In the past, synthetic resin foams such as polystyrene and polyethylene were often used as packaging materials due to their strength, impact cushioning properties, and processability. However, it is difficult to incinerate these discarded foams from the viewpoint of environmental pollution. Therefore, usually, they are landfilled in the natural environment as waste, and they remain for a long time because they are not biodegradable, which not only spoils the beauty of the environment, but also has the problem of polluting the environment. [0003] On the other hand, after soaking waste paper such as newspapers, magazines, corrugated cardboard, etc. in water to soften, select and remove foreign matter, the pulp obtained in this way is used a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65D1/00B32B29/06D21F11/04D21H11/20D21H21/38D21H27/00D21H27/10
CPCY10T428/1307D21H27/10D21H11/20D21H21/38D21F11/04
Inventor 小池求
Owner SEIKO EPSON CORP
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