JPS5951026A - Manufacture of damping package - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention uses an IJ'f layer sheet and a base plate having a heat-shrinkable foaming function to produce small automatic parts, electric appliances, electronic parts, and 4"
The present invention relates to a method for producing a cushioning package by packaging objects such as electrical parts such as electrical parts, ceramics, glass products, etc.

, Generally, for industrial use (Cushioning properties of products, etc.), the method of inserting parts into a cushioning material such as foam shaped into the shape of the part is used. However, this) +-1, i
7) Formation of buffer eyes according to the shape and size of the product
When inserting small parts into the loose soil 4, it is necessary for the worker to lift and insert the parts, which can be cumbersome and requires a large number of parts.1" 11.1 Not only this, but there is also the risk of contracting saritis due to continuous cropping, which is a problem in terms of work.

On the other hand, the present inventors have already proposed the use of a heat-shrinkable foam sheet as the fourth packaging, and buffer packaging for heated industrial parts, etc. Since the sheet is foamed, the packaging strength, abrasion resistance, etc. of the 54 sheet are not guaranteed, and the shape and weight of the packaged items are limited. However, there were economical disadvantages such as having to use thick notebooks.

The present invention has been designed to solve the disadvantages of the prior art. 7: Good pf, strong packaging FW, excellent abrasion resistance, and 1. +-;+: This is a 1.! R(-J) manufacturing method for buffer packaging that can be applied to the packaged items of the f-type IJ(-J).

That is, according to the present invention, an object to be packaged is placed on a plywood board H, and the object to be packaged is made into a heat-shrinkable material by integrally laminating an aged foamable resin sheet and a heat-shrinkable base sheet. The present invention relates to a method for manufacturing a buffer package, in which the product is covered with a heat-resistant material and then heated with a horn.

The heat-shrinkable f'i Jri sheet used in the present invention is a laminate in which a heat-shrinkable foaming resin sheet and a base sheet-like material are integrally provided. The heat-shrinkable resin sheet is a foamable resin sheet that has been heat-shrinked (applied with several filtration layers). When heated, the material that foams is referred to as the foaming property (1).
Plastic 417j resin, thermosetting resin, or a mixture thereof is treated with foaming agent (QriUI mountain) and, if necessary, a foaming agent, curing agent, (IIJl accelerator, crosslinking agent, crosslinking auxiliary agent, etc.)
Fillers, colorants, stabilizers, etc. are blended and the mixture is added to 717. After kneading 7 times, the foaming agent should be reduced to 11 degrees.
So, ・1 ノレは１勺■t+'娶）・Ba、See・～
(1σi mountain t゛(I..., January) i+7) ;173
, R high ril lit? of (a? (1,; L,
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'l已11'1iIlii, -C1l-tl,
I: Ri egg 1. / :/ , :r ding-t-:yri'li acid vinyl/l-co IF included book, adhesive i bullock cart i tofin/C dogaagera I",
R to f1 change matter 4f'411tr to) yo ``ki'/fill1773: Depending on which one is kicked, you can also use these to blend l'' L,, -C.

``Staπ, foaming agent'' 1, i5J/fir softening temperature ゛L-7-), formation 1〆 vortex 1rr'', Suj, i
The J system j+,, /', is widely used as azo compounds, nitrone compounds, hydrazino 1゛7 compounds, etc.
Soon.

In this way, 1)
Eye 1j, 1 fat sheet heating 1 foaming ratio 1r, open foam 1
．． (+ 5 2+1 times, practically: l ~ 1 (1 (It is better to say A. JLj”, also small ii
:) fn゛1.11 is ＾'54～゛7. and number 7) (
i? +IJ, JlV, lHj萱)〈Su-5 is foaming (i゛・niji-17) Strong 11゛4-Zuba small nil 1113 is O), in front of S'I n! tl':
, '1 ~ Lima contraction? f + character j51 fatty acid effect 1 --- is integrally provided 4) i, "t IV city group i]n-
＋"I's' No.1,... A1L (tJ2, 1,
Thermoplastic materials such as polyolefin, nylon, etc.
i (riJ In? sheet, non-woven fabric, net71
・It is good for things like shapes, etc. and is often used.

The heat-shrinkable laminated sheet 1 used in the present invention-C can be obtained by laminating the foamable 4i2J resin sheet and a base sheet-like material with an adhesive or the like, and then stretching the sheet by any method, In particular, when the base material is a sheet, it can also be obtained by forming a laminate of a foamable resin sheet and a base sheet by coextrusion using an extruder or the like, and then stretching the laminate.

The stretching may be carried out using a normal stretching method 13, preferably biaxial stretching, and the stretching ratio is preferably 1.5 times or more, in fact, about 5 to 4 times. #, J: After stretching the foamable resin sheet and base 4 sheet-like material in the same stretching direction and stretching ratio, a bonded material ゎc=r can also be obtained.

The thickness Q of the heat-shrinkable laminated sheet obtained in this manner depends on the size, weight M, etc. of the packaged object.

C゛ is also different, but usually f) old 2.11 p stroke n゛[
11, i%! IK 4a <i
M ffjJ (4;, a resin sheet and a resin sheet and M'IM shrinkable base material sheet! F i □J1, 1) 1 are each (+, (l J ~ 1.0 culm degree).

In the present invention, 4', Il, 4J4 items to be wrapped are placed on plywood, and the items to be wrapped are -1-,,Nj! f? 8. Cover with a shrinkable F11I layer sheet, and then 7. After that, add 71g of foam to the base plate and wrap all the belongings in one piece. At this time, I: The laminated sheet is a foamed resin sheet.
The reason for arranging it so that the top side faces the packaged object is to provide a cushioning effect to the packaged object and to avoid the problem of plywood and fiI. This is preferable from the viewpoint of adhesive effect with the layer sheet. In the case of bamboo as a base material/- humanoid sheet, be sure to add one layer M[, like '+'
'R(IN sea i) There are 11 and 4.However, while L-, ]s, tt=a sea 1. For example, in Naruhaku where the shape is like Neno]. It is also possible to arrange a base sheet-like material on the object side.Furthermore, in the present invention, the heat-shrinkable foam resin sheet fits the packaged object! I. A heat-shrinkable base material in the form of However (
It can also be used.

In addition, in the present invention, t'1, the Xftft-t is 6f
The heat-shrinkable foaming resin sheet made of F] is colored in such a way that it adheres to the plywood when it is heat-shrinked and foamed, but does not adhere to the packaged item. There is a must-have 9.

To the present invention”? The U-plate used in the package has a cushioning effect on the packaged items, and is preferably heat-shrinkable and foamable (14). Those that do not occur are used.

As such a plate, the material, shape, Tf
i: By V ridge etc. jfPe Naruga-General II
J: Each (1) Board-shaped paper, cardboard paper, various plastic boards, wooden boards, etc. are preferably used.

In addition, to improve workability when taking out the packaged item after it has been buffer-wrapped in an integrated layer, it should not adhere to the foamable resin sheet that is cured by heating. It is preferable that the packaged object be one with a heat capacity of -11F larger than that of the base plate. 11 The surface temperature of the packaged object, r/
＞：If the pressure does not rise sufficiently, it can prevent adhesion with the second seal.

Beautifully wrapped! It is also possible to appropriately select a heat-shrinkable foamable resin sheet made of a material that does not adhere to meat and does not have adhesive E2.

In the present invention, a heat-shrinkable laminated sheet made of a heat-shrinkable foamed resin sheet and a heat-shrinkable laminated sheet is used to wrap the packaged object and plywood, and the heating method is as follows: 1-' It, t generally '+17. There is a heating method using hot air blowing using air, gas, etc. as a heat source, but the present invention has 1. It is preferable to use a radiant heat source such as infrared rays or far infrared rays. - Note: Due to the radiant heat source, 211i heat slippage V''' and hot air circulation J1;1 effects do not occur, thus preventing inconvenient phenomena such as peeling and breakage when the foamable 4fQ resin sheet softens. A cushioning package with an extremely good appearance can be obtained. In addition, the thermal energy Q due to radiation can be efficiently applied to the heat shaping, heat shrinkage, and foaming of the foamable resin sheet, and the temperature rise of the leather packaging can be suppressed to a low level, which should be avoided as much as possible. .

In addition, in the present invention, the object to be packaged is placed on the base plate,
L: A heat-shrinkable laminated sheet is placed on the side of the packaged object, and a resin sheet is placed on the back side of the plywood, and the laminated sheet and the resin sheet are melt-bonded at both ends.

Then wrap the item to be packaged and the plywood, and then heat shrink and foam the item to be packaged and the plywood.
.

The resin sheet used at this time is not particularly limited as long as it can be melted together with the laminated sheet, and may be made of polyolefin resin such as polyethylene, polypropylene T1 vinyl, ethylene vinyl acetate co-former, vinyl chloride, polyester, etc. A resin sheet without a foaming function, a resin sort with a heat-shrinkable function, the foamable resin sheet, a heat-shrinkable foamable resin sheet, or the like can be appropriately selected.

According to the method described in Section 2 above, it is possible to manufacture a stronger and more compactly packaged buffer package with good workability.

Hereinafter, an example of the manufacturing method of the present invention will be explained with reference to the drawings.

Figure 1 is an example of a cube-shaped X package being loosely packed.
Encapsulation 4.5 The material 2 is aged with a heat shrinkable light 11, a resin sheet 31, and a layered material sheet 32. 'i I-・ni/-1・3
Then, foaming property (61 fat sheet 31
+l+i z Pa contact - Jru, then K i'lf. Conical shape? ,X te8F+jf+1(,',It 4+7
J, 11? :”-t(I It'<11'? t
Itro(Iγ1 fat melt/;!'li temperature 1 dust (ka-,
,') J+j', month shi・-1・state! Add to the temperature above which L'-132 can be ripened:, Izu ft
' The layer sheet 3 is shrunk and the five waves follow the shape of the snout 2.
It is heat shaped in step 5. As the spatula heats up, as shown in Figure 2, < 4? , l fat is foamed to form a body layer 11', and the foam layer 31' and base plate 1 are bonded to each other to form a package 17. -Sumo wrestler ML foam @@@6? )
4. Wood chips; (1' does not adhere to the proboscis 2 of the packaged object, so the workability when taking out the packaged object 2 from the buffer packaging is good.

'Also, as shown in Figure 3, the back side 1+11 of the stand; 1171
A resin sheet 4 is placed on the laminated sheet 3): the resin sheet 4 is melt-bonded at both ends i and cB to form a heat-sealed part 5, which wraps the packaged object 2 and base plate 1, and then By heating with a kiln, you can create a strong and compactly packaged buffer package. ,′! Can be built.

As described above, in the method for manufacturing a cushioning package of the present invention, a heat-shrinkable laminated sheet in which a heat-shrinkable base sheet is integrally provided on a heat-shrinkable foaming resin sheet is used. Since the item to be packaged and plywood are packed together for cushioning packaging, it is stable and has a strong holding power, can be applied to items to be packaged in any shape, and has excellent packaging strength C, 1iIitFp abrasion resistance, etc. It has the advantage of providing good workability.

Next, the present invention will be specifically explained using examples.

14 parts of 13-1 parts in Examples are shown.

Example 1 Ethylene vinyl acetate copolymer (manufactured by Mitsui Polychemical Co., Ltd.,
Evaflex P-14+17) 100 parts, foaming agent (Efn Kaseisha v'!!, L", = Hall T) W
After mixing 10 parts of -('i) and 1 part of a crosslinking agent (dicumylverogizide) with a mixing roll,
1/Tizer -C pelletized and used in an extrusion molding machine so that the foaming agent does not decompose (extrusion die temperature 11 ())
C), a foamed sheet of 6 bars was obtained.

In addition, the notebook was placed on the two-axis hidanshinkuma.
J direction 1ξ extension 1? A heat-shrinkable foaming resin with a temperature of 4 (1'(/'),j'';' 0.2 mm/-L'5?) was obtained.

Next (C thickness 1 with a stretching ratio of 2 times in each Jj direction
A simple polypropylene 17 non-woven fabric and the matured foamable resin sheet described above were bonded together using a nitrile rubber agent) to obtain a heat-shrinkable laminated sheet. 0th order 1st
As shown in the figure, a steel packaged snout is placed on a cardboard plywood (i'Jj,,Jl). The iii laminated sheet was covered with 4J packaging and placed in a far infrared furnace for 16 (1
'C for 15 minutes.

This heating first softens the foamable resin sheet and causes the resin sheet to shrink (the heat shrinkage of the woven fabric is 1ls3). Excellent, and the appearance was also very good.

Example 2 Polyethylene 17in (manufactured by Sumitomo Chemical Co., Ltd., Sumitunosen ■・-7
05) 6 (1 part, ethylene vinyl acetate copolymer (manufactured by Mitsui Polychemical Co., Ltd., Evafu l/Sokus p-28o3+4
0 parts, a blowing agent (hydration chemical iJ: ?pp), 6 parts of Neocelvon P [1 (10)] and 1 part of a crosslinking agent (dicumyl peroxide) were mixed in a taxi/grol [after 7 , Pe1/Quiser jC Tepo 1/, Foaming property 417
4 Fat A; 1 product was obtained.

Next, the foaming property 1 & J Ill? The foaming agent decomposes the composition and
Under the conditions (Ninda temperature + 31) ``c''),
2nd symbol +) n, p°, -111! I Kar] Borie t-rene (Tamai Petrochemical Industry Co., Ltd.).

70 (+ (l F ) to dice temperature Ire 14
At 11', coextrusion was carried out to obtain a laminated sheet. The obtained sheet was E02 with a thickness of τχ(·1, foamed Pl: 4+ζ1117 points and a diameter of 0.4F-shoulder 71 Bore y-lens-1-1).

A heat-shrinkable laminated sheet with a thickness of 1.3 INN was obtained.

Next, as shown in Figure 73, (I
I Place the packaged items of sea bream on 11th item 7, and place the above heat-shrinkable laminated sort on each item 1111 to be wrapped.
I'I: I':"" - A resin sheet made of polypropylene 17 is placed on the back side of the base plate, and both da' + Iq 71ζ are adjusted to tcI melting pressure d Row 2/Hoji "Thread, CI 711 in 1 East Red 9F Furnace as in Example 1"
℃? : Heated for 2 hours and put into a buffer package. 1! When the tiger iL7'r-4 was placed in the inner packaging, the individual pieces were held at 5'+il-, and f'4%, and the foam layer was covered with a polyethylene sheet, 7. ' J: Cj
i"Ij degree is turned, and the wear and tear ("1'1 part 7) 4" tatami.
'1: Good, 7) Follows the shape of the accessory well1
．． - [Form 1i1i,' fi 4+, ri [four also non-]K is good for N-37'.

[Brief explanation of the drawing]

jt”: I l:n1(ni4・, 1? between the edges divided by 4i
'r,', il:ii 3U, ≠In, Rikagi 19
Shows the state 1jji before foaming with Na-absorbing, 1" I has an r-plane turn,
1112 plan, 1, -1<Invention announced -11
Datori Hajime (+Rj Bao, ・j 1 not included + 7.') 1tJi 1 state, 2113 drawing number, 1 dud ill! IJII of 1 mountain fruit 1 dari:;~I1g 4 inn 9 west n back front j
dog! Indicates no 11 where 1r<l (? Yes.

Claims (1)

[Claims] An object to be packaged is placed on a sheet of plywood, and the object to be packaged is placed on a plate in which a heat-shrinkable foaming resin sheet and a heat-shrinkable foaming 7-tape are integrated.
By covering with a flt-layered heat-shrinkable laminated notebook and then heating and foaming, the heat-shrinkable laminated sheet adheres to the base plate but does not adhere to the packaged item.
Method 0 for manufacturing a cushioning package characterized by integrally packaging plywood and a clothing item