JP2004244037A - Cushion envelope - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cushion envelope which is excellent in operability of easily inserting an electronic recording medium or the like such as a CD and an FD therein, capable of preventing the electronic recording medium from being damaged, disposed as paper after the use, and manufactured very easily. <P>SOLUTION: The cushion envelope is mainly formed of paper powder or vegetable powder, and pressed in a sheet with a specified width with a plurality of string-like parts 1, 1, or the like parallel to each other and coupled with each other when formed. The cushion envelope comprises a sheet-like cushion material A which is folded into two at a folding part 2 substantially at the center of the longitudinal direction, and an envelope B. The sheet-like cushion material A is inserted in the envelope B in a substantially full manner with the two-folded side of the sheet-like cushion material A on the distal side in the envelope B. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention is excellent in operability to easily insert an electronic recording medium such as a CD or FD into an envelope, can prevent the electronic recording medium from being damaged, can be processed as paper after use, and can be manufactured. The present invention relates to a cushion envelope that can be extremely easily formed.
[0002]
[Prior art]
Conventionally, as a cushion material, there has been a cushion envelope in which spongy pulverized material is inserted into a double envelope. Also, there is a cushion envelope using a synthetic resin cushion material in a double envelope. Further, there is a cushion envelope in which the weight of the cushion material itself is increased. Each type of cushion envelope is a double envelope type and is filled with cushion material.
[0003]
[Patent Document 1]
No. 5-51743 [0004]
[Problems to be solved by the invention]
However, in a conventional type in which spongy pulverized material is inserted, if the envelope on the outer surface is torn, the pulverized material may be scattered from the inside, and even dust may be scattered. Further, when a synthetic resin cushion material is used in an envelope as in Patent Document 1, there is a disadvantage that even used envelopes cannot be burned as garbage, and there is a problem in terms of environment. there were. Further, there is also a disadvantage that, after use, the envelope and the cushioning material generally have to be discarded separately. Further, in the case of a cushion envelope in which the weight of the cushion material itself is increased, there is a disadvantage that the mailing amount is relatively high. Any conventional type of cushion envelope is a double envelope type, which is cumbersome to manufacture and expensive. Therefore, there is a demand for a cushion envelope that solves these disadvantages.
[0005]
[Means for Solving the Problems]
Therefore, the inventor of the present invention has conducted intensive studies to solve the above-mentioned problems, and as a result, the present invention has been made based on a paper powder component or a vegetable powder component as a main component, and a plurality of strings are mutually parallel at the time of molding. It consists of a sheet-shaped cushion material and an envelope which are pressed and formed into a sheet shape with a predetermined width combined, and are formed into two folds at a substantially middle fold in the longitudinal direction, and the folded side of the sheet-like cushion material is an envelope. An operation in which an electronic recording medium such as a CD or an FD can be easily inserted into the envelope by forming a cushion envelope in which the sheet-like cushion material is inserted almost completely into the envelope so as to be located at the back of the inside. The present invention solves the above-mentioned problems by being excellent in the property and preventing the electronic recording medium from being damaged. The cushion envelope after use can be simply treated as paper, and can be manufactured extremely easily. Than it is.
[0006]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of the present invention. A is a sheet-like cushion material, in which a plurality of string-like materials 1, 1,... Are connected in parallel to each other, have a predetermined width in the width direction (the width of the opening of the envelope B), and are in a flat state. Is formed. The length of the sheet-shaped cushion material A in the longitudinal direction is formed into a fold in which the folded portion 2 is formed substantially in the middle. The length from the end to the middle folded portion 2 is configured to be inserted into the length of the envelope B.
[0007]
The sheet-like cushioning material A comprises about 10 to 40% by weight of a paper powder component or a vegetable powder component, about 25 to 40% by weight of a starch (such as corn starch) component as an adjuvant, and about 35 to 50% by weight of And a polyolefin resin. Specifically, the paper powder component is one that uses government-made postcards (including postcard waste paper), banknote waste paper, stamp waste paper, high-quality paper (including high-quality waste paper), and the like. Also, in this specification, the official postcard waste paper refers to waste paper such as cutting waste and stained paper generated in the production process of the official postcard and stained paper generated in the use process. Examples of the plant powder component include powders of bran, tea leaves, corn meal, food residues such as okara, and the like. Further, an increase or decrease of about 10% of each component is included in the present invention.
[0008]
Paper materials such as government-made postcards (including postcards), banknotes, stamps, and high-quality papers (including high-quality papers) are first roughly crushed (crushed) by a mixer-cutter type crusher, and then milled. What is finely pulverized by a mortar type pulverizer is collected as powder by a dust collector. A paper powder component as such a paper powder is kneaded with a starch component using a kneader, is heated and melted together with a polyolefin resin, and is extruded using water as a foaming medium using a twin-screw extruder. A foam is produced. It is preferable to pulverize the used postcard made of official postcard into a powder (about 150 to 80 μm particle size) that has passed through a 100 to 200 mesh sieve.
[0009]
In the present invention, the proportion of the raw material composition of the foam constituting the sheet-like cushion material A is such that the proportion of the polyolefin-based resin in the whole is about 60% by weight, whereby a foam can be obtained. From the viewpoint of effective use of postcard waste paper, it is desirable that the proportion of the polyolefin resin is not more than 60% by weight, and the composition ratio of postcard waste paper is not less than 10% by weight, and is as large as possible. The polyolefin resin may be a polypropylene resin or a polyethylene resin.
[0010]
Even when the proportion of the polyolefin-based resin (preferably, a polypropylene resin or a polyethylene resin) is 60% by weight or more, a foam substantially similar to the above can be obtained. Further, the sheet-like cushion material A is formed by sheet-like foam M as it is or cut into two to form a sheet.
[0011]
Next, a method for producing the sheet-like cushion material A mainly containing a paper powder component such as a postcard made of official postcard as described above will be described. First, a paper powder component of used paper such as a government-made postcard is coarsely pulverized by a mixer-cutter type pulverizer to crush it into pieces of about 15 to 20 mm. Then, it is finely pulverized with a mill-type pulverizer to obtain a paper powder component of an official postcard made of about 200 mesh. Then, the paper powder component of the finely ground official postcard waste paper and a starch component that is an appropriate industrial starch are mixed. Then, a polyolefin resin (granules) and water are mixed with the paper powder component and the starch component, and the mixture is heated and kneaded.
[0012]
The components thus formed are extruded from an extruder serving as a high-temperature heating cylinder, and are passed through an extrusion die 5 and an extrusion frame 7 of an extrusion die D provided at an outlet end of the extruder to form a sheet. The sheet-like cushion material A as the foam M can be manufactured. Further, a roll forming machine E is arranged adjacent to the extrusion die D. The roll forming machine E is composed of a lower roll 8 and an upper roll 9. The foam formed by the extrusion die D is pressed in the thickness direction by the roll forming machine E to form a sheet-like foam M. The sheet-like cushion material A is formed.
[0013]
FIG. 5A is a perspective view showing the extrusion die D and the roll forming machine E. FIG. 5B shows a state in which the foam formed by the extrusion die D is pressed by the roll forming machine E so as to have a small thickness, and the sheet-like cushion material A is formed. The extrusion die 5 has a rectangular cross section and a flat cubic shape having an appropriate length. A plurality of holes 6, 6,... Penetrate in the length direction inside the cross section. The hole diameter is about 2 mm to about 3 mm. A plurality of cords 1, 1,... Emerging from the plurality of holes 6, 6,... Are bonded to each other in the width direction by passing through an extrusion frame 7 in which a void having a rectangular cross section is formed. Thus, the sheet-like cushion material A is formed.
[0014]
This pushing direction is configured to pass from left to right as indicated by arrows in FIGS. 5A and 5B. The sheet-like cushion material A is formed by arranging a plurality of string-like objects 1, 1,... In a flat shape in parallel along the longitudinal direction (see FIGS. 1, 2 and the like). The foam formed by the extrusion die D has a thickness of about 10 mm to about 20 mm. Then, the foam is compressed by a roll forming machine E and formed into a thickness of about 3 mm to about 10 mm, and becomes the sheet-like cushion material A as a sheet-like foam M. At this time, when the compression ratio is increased to about 3 mm to about 6 mm, the sheet-like cushion material A may be used as it is, as shown in FIG.
[0015]
As a modified example of the sheet-shaped cushion material A, as shown in FIG. 2A, an appropriately thick sheet-shaped foam M formed to about 10 mm is cut at a position (cut surface) substantially half the thickness. It is cut (divided) into two. Thereby, as shown in FIG. 2 (B), a sheet-shaped cushion material A having a flat surface side was obtained. The manufacture is completed only by inserting this from the opening of the envelope B. In this case, a large foaming ratio can be obtained, and the material can be reduced.
[0016]
Reference numeral 10 denotes a folded edge provided on the envelope B, and reference numeral 11 denotes an inner small folded edge, which is formed on the back surface opposite to the folded edge 10. The presence of the inner small folded edge 11 can prevent the sheet-shaped cushion material A from jumping out during unused storage or use.
[0017]
【The invention's effect】
In the invention of claim 1, a sheet-like material having a predetermined width in which a plurality of string-like portions 1, 1,... It is formed of a sheet-like cushion material A and an envelope B which are formed by pressing and are folded in two at a substantially middle folded portion 2 in the longitudinal direction, and the folded side of the sheet-like cushion material A is located inside the envelope B. As described above, the sheet-shaped cushion material A is inserted into the envelope B almost completely so as to form a cushion envelope. First, an electronic recording medium such as a CD or FD can be easily inserted into the envelope B. The electronic recording medium is excellent in operability and can be prevented from being damaged. Secondly, it can be processed as paper after use, and thirdly, it can be manufactured very easily.
[0018]
When this effect is described in detail, the sheet-like cushion material A is cut at the boundary between the string-like materials 1 and 1 even if the sheet-like cushion material A is processed at high heat because a plurality of the string-like materials 1 are arranged in parallel. In the present invention, it is customary to attach the cords 1, 1,... At the opening portion of the envelope B so that the ends of the cords 1, 1,. Is the depth of the envelope B, so there is an advantage that it is easy to insert a CD or the like because it is along the longitudinal direction of the string-like object 1 and to insert and remove the string-like object 1, 1, … A structure that does not peel off from each other.
[0019]
In addition, the sheet-like cushion material A according to the present invention is rich in elasticity and can be wrapped from above and below to maintain its shape, so that electronic recording media such as CDs and FDs can be safely delivered or stored. Can be done well. In particular, excellent effects can be exhibited for transportation that may involve vibration.
[0020]
Further, when a cushion material made of synthetic resin is used in the envelope B as in the related art, there is a disadvantage that even the used envelope cannot be burned as garbage, and there is a problem in terms of environment. At the end of use or after use, there is a disadvantage that the envelope B and the cushion material generally have to be separated and discarded. However, in the present invention, the sheet-like cushion material A is used as a paper powder component or Since the plant powder component is used as a main component, these components do not generate harmful gas even if they are disposed by burning. Therefore, the cushion envelope itself can be incinerated and adapted to prevent pollution.
[0021]
Further, the cushion envelope of the present invention can be extremely easily manufactured. In other words, there is no double envelope in the present invention, and it can be easily finished only by inserting it into the envelope B using the folded sheet-like cushion material A. There is an advantage that it can be provided at low cost.
[0022]
In the second aspect of the present invention, in the first aspect, the sheet-like cushioning material A comprises 10 to 40% by weight of a paper powder component or a vegetable powder component, and 25 to 40% by weight of a starch component as an auxiliary agent. And a cushion envelope composed of 35 to 50% by weight of a polyolefin-based resin. First, the cushion can be made much better than the conventional cushion material, and secondly, an anti-pollution type sheet-like cushion. It has the effect of being able to be made of material A.
[0023]
In particular, in the present invention, a flexible foam having more resilience than a conventional foam of a vegetable material can be produced by using a combination of high-quality vegetable fiber of a postcard and a starch in combination with a starch. Such a resilient and flexible foam has an advantage that it can be effectively used as a cushioning material at the time of transportation and a heat insulating material as a building material. For this reason, the government-made postcard waste paper is only used for ordinary recycled paper, but the present invention can be used much more effectively in the present invention.
[0024]
In addition, since the polypropylene resin component contained in the foam is a chain hydrocarbon polymer having no benzene ring, harmful soot does not appear in the case of the combustion treatment, compared to foam polystyrene which has been widely used in the past. After combustion, it mainly becomes carbon dioxide gas and water vapor, and the calorific value of combustion is smaller than that of expanded polystyrene. Accordingly, since the waste can be burnt and disposed together with general household waste, a good effect can be obtained from the viewpoint of global environmental protection.
[0025]
According to the third aspect of the present invention, in the first or second aspect, the sheet-shaped cushion material A is a cushion envelope having a thickness of about 3 mm to about 6 mm, so that a particularly general and easy-to-handle cushion envelope can be provided. According to a fourth aspect of the present invention, in the cushion according to the first, second or third aspect, the sheet-like cushion material A is obtained by cutting the flat thickness of the cushion material into about half, and each thickness becomes about 3 mm to about 6 mm. By making the thickness half, the foaming rate can be increased and an inexpensive cushion envelope can be provided.
[0026]
According to a fifth aspect of the present invention, in the first, second, third or fourth aspect, an inner small folded edge 11 is formed on the back surface opposite to the folded edge 10 provided on the envelope, and the inner small folded edge is formed. By providing a cushion envelope configured to press the opening-side end of the sheet-shaped cushion material A at the edge 11, when the cushion envelope is not used, the sheet-shaped cushion material A is prevented from popping out, or It has the advantage that it serves as a guide piece when inserted during use, making it easier to insert things.
[Brief description of the drawings]
1 (A) is a perspective view of the present invention, (B) is a perspective view of a sheet-like cushion material to be put into an envelope, [FIG. 2 (A)] is an end face of a sheet-like foam material processed into a sheet-like cushion material FIG. (B) is a perspective view of a sheet-like cushion material finished by the cutting process of (A). FIG. 3 is a cross-sectional view showing a use state of the present invention. FIG. 4 (A) shows a use state of the present invention. Sectional view (B) is an enlarged view of part (A) of (A). [FIG. 5] (A) is a perspective view of the extrusion die partially cut away, and (B) is a perspective view of the roll forming machine formed from the extrusion die. Diagram of forming foam into sheet-like cushioning material by roll forming machine [Explanation of symbols]
A: sheet-like cushion material B: envelope 1 ... string-like part 2 ... folding part 10 ... folding edge 11 ... inside small folding edge

Claims (5)

A paper powder component or a plant powder component is a main component, and at the time of molding, a plurality of cords are pressed and molded in a sheet shape with a predetermined width that is connected to each other in parallel, and a substantially folded portion in the middle of the longitudinal direction. The sheet-like cushion material is formed into a half-folded form, and the sheet-like cushion material is inserted almost completely into the envelope so that the folded side of the sheet-like cushion material is located inside the envelope. A cushion envelope characterized by the following. 2. The sheet-like cushioning material according to claim 1, wherein the sheet-like cushion material comprises 10 to 40% by weight of a paper powder component or a vegetable powder component, 25 to 40% by weight of a starch component as an auxiliary agent, and 35 to 50% by weight of a polyolefin resin. And a cushion envelope comprising: 3. The cushion envelope according to claim 1, wherein the thickness of the sheet-like cushion material is about 3 mm to about 6 mm. 4. The cushion envelope according to claim 1, 2 or 3, wherein the sheet-like cushion material is cut in a flat thickness of about half and each thickness is about 3 mm to about 6 mm. 5. The sheet-like cushion material according to claim 1, 2, 3, or 4, wherein an inner small folded edge is formed on the back side opposite to the folded edge provided on the envelope, and the inner small folded edge is an opening end of the seat-shaped cushion material. A cushion envelope characterized in that the cushion envelope is configured to be pressed.

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