JPH0728088Y2 - Storage tray - Google Patents
Storage trayInfo
- Publication number
- JPH0728088Y2 JPH0728088Y2 JP1989115734U JP11573489U JPH0728088Y2 JP H0728088 Y2 JPH0728088 Y2 JP H0728088Y2 JP 1989115734 U JP1989115734 U JP 1989115734U JP 11573489 U JP11573489 U JP 11573489U JP H0728088 Y2 JPH0728088 Y2 JP H0728088Y2
- Authority
- JP
- Japan
- Prior art keywords
- layer
- polyurethane foam
- storage
- tray
- waterproof resin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000003860 storage Methods 0.000 title claims description 38
- 239000010410 layer Substances 0.000 claims description 45
- 229920005830 Polyurethane Foam Polymers 0.000 claims description 23
- 239000011496 polyurethane foam Substances 0.000 claims description 23
- 229920005989 resin Polymers 0.000 claims description 23
- 239000011347 resin Substances 0.000 claims description 23
- 239000002344 surface layer Substances 0.000 claims description 14
- 235000013399 edible fruits Nutrition 0.000 claims description 8
- 239000002131 composite material Substances 0.000 claims description 7
- 235000013601 eggs Nutrition 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims description 3
- 239000004745 nonwoven fabric Substances 0.000 description 6
- 239000002250 absorbent Substances 0.000 description 4
- 244000144730 Amygdalus persica Species 0.000 description 3
- 235000006040 Prunus persica var persica Nutrition 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- -1 polypropylene Polymers 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- 239000005977 Ethylene Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 239000012790 adhesive layer Substances 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 239000004794 expanded polystyrene Substances 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 238000007666 vacuum forming Methods 0.000 description 2
- 101100160821 Bacillus subtilis (strain 168) yxdJ gene Proteins 0.000 description 1
- 244000141359 Malus pumila Species 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 229920003182 Surlyn® Polymers 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 235000021016 apples Nutrition 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920005669 high impact polystyrene Polymers 0.000 description 1
- 239000004797 high-impact polystyrene Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 229920001684 low density polyethylene Polymers 0.000 description 1
- 239000004702 low-density polyethylene Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
Landscapes
- Containers Having Bodies Formed In One Piece (AREA)
- Buffer Packaging (AREA)
- Packages (AREA)
- Packaging Frangible Articles (AREA)
Description
本考案は、桃やリンゴ等の果物或いは鶏卵等を複数個纏
めて収容し、輸送や保管乃至は店頭販売するときに用い
る収納トレイに関する。The present invention relates to a storage tray that is used for collectively storing a plurality of fruits such as peaches and apples or eggs, and transporting, storing, or selling at a store.
果物等を複数個まとめて包装するため用いる収納トレイ
としては、実開昭62−22906号公報に開示されているよ
うに基材層である発泡ポリスチレンペーパー等の防水性
樹脂層上に表面層となる吸水性不織布層を設けた複合シ
ートを成形し、被収納物の形状に適合する複数個の収納
凹部を設けた構造のものが知られている。そして、この
収納トレイは、各収納凹部の部分では防水性樹脂層面よ
り吸水性不織布層が若干浮き上がって、該両層の間に空
間が形成されている。As a storage tray used for packaging a plurality of fruits etc. collectively, a surface layer and a surface layer on a waterproof resin layer such as expanded polystyrene paper which is a base layer as disclosed in Japanese Utility Model Publication No. 62-22906. There is known a structure in which a composite sheet provided with a water-absorbent non-woven fabric layer is formed and a plurality of storage recesses that match the shape of a storage object are provided. In this storage tray, the water-absorbent nonwoven fabric layer is slightly raised above the waterproof resin layer surface in each storage recess, and a space is formed between the two layers.
上記公知の収納トレイは、被収納物に付着した水滴を吸
水性不織布よりなる表面層によって吸収し、被収納物を
水滴より保護する作用はあるが、該不織布の表面層自体
は延展性に乏しいので、特に収納凹部間を仕切る肩の部
分では基材層と表面層が密着していて緩衝性に欠けてい
るため、この肩の部分によって被収納物に傷をつけ易い
といった問題がある。 そこで、本考案の目的は表面層本来の吸水性機能を発揮
できることは勿論のこと、表面層自体の弾力性を高め
て、特に収納凹部間を仕切る肩の部分にも緩衝性を与え
ることができるように改良した収納トレイを提供するこ
とにある。The known storage tray has a function of absorbing water droplets adhering to an object to be stored by a surface layer made of a water-absorbent nonwoven fabric and protecting the object to be stored from water droplets, but the surface layer of the nonwoven fabric itself is poor in spreadability. Therefore, the base layer and the surface layer are in close contact with each other, especially in the shoulder portion that separates the storage recesses, and the cushioning property is lacking. Therefore, the object of the present invention is not only to exhibit the water-absorbing function inherent in the surface layer, but also to increase the elasticity of the surface layer itself, and in particular to give a cushioning property also to the shoulder part partitioning the storage recesses. It is to provide an improved storage tray.
上記の目的を達成するために、本考案の特徴とする収納
トレイは防水性樹脂層上に伸び率（JIS K−6301）が120
〜180％、見掛け密度（JIS K−6401）が10〜40g/l、反
発弾性率（JIS K−6401）が25〜50％、圧縮残留歪（JIS
K−6401）が10％以下である連通気泡構造のポリウレタ
ンフォーム層を設けた少なくとも２層以上の複合シート
によって、上記ポリウレタンフォーム層を表面層とした
トレイ体を形成し、このトレイ体には該トレイ体の成形
時に果物や鶏卵等を収容するための複数個の収納凹部を
設け、これらの収納凹部では防水性樹脂層よりポリウレ
タンフォーム層を若干浮き上がらせて、該両層の間に空
間を形成して成るものである。In order to achieve the above object, the storage tray, which is a feature of the present invention, has an elongation rate (JIS K-6301) of 120 on the waterproof resin layer.
~ 180%, apparent density (JIS K-6401) 10-40g / l, impact resilience (JIS K-6401) 25-50%, compression residual strain (JIS
A tray body having the polyurethane foam layer as a surface layer is formed from a composite sheet having at least two layers having a polyurethane foam layer having an open cell structure having a K-6401) of 10% or less. A plurality of storage recesses for storing fruits, eggs, etc. are provided when the tray body is molded, and a polyurethane foam layer is slightly raised above the waterproof resin layer in these storage recesses to form a space between the two layers. It consists of
以下に、本考案の実施例を添付図面を参照しながら説明
する。 トレイ体１は基材層である防水性樹脂層２上に表面層と
なる連通気泡構造のポリウレタンフォーム層３が接着さ
れた複合シート製であって、例えばプラグアシスト真空
成形法により成形されており、その成形時に果物や鶏卵
等を収容する複数個の収納凹部４を設ける。これらの収
納凹部４では成形時のプラグ高さの調整により防水性樹
脂層２よりポリウレタンフォーム層３を若干浮き上がら
せて、該両層の間に空間５を形成して収納トレイを構成
する。なお、本収納トレイを構成するには、第３図に示
す如く防水性樹脂層２とポリウレタンフォーム層３との
間に接着剤層６を設けた３層構造の複合シートを用いる
こともできる。 また、本収納トレイを製造するには、防水性樹脂シート
にポリウレタンフォームシートを積層して得た複合シー
トを軟化させ、嵌合接合時の間隙が４〜20mm、好ましく
は５〜15mmである雌雄両型を用いて、軟化状態にある上
記複合シートをポリウレタンフォームシート側よりプラ
グアシストする一方、防水性樹脂シート側より真空引き
するものであって、このプラグアシスト真空成形はプラ
グが前記収納凹部４内に挿入される容積を該収納凹部４
の容積の40〜80％になるように行なえば、トレイ体１の
収納凹部４の部分では防水性樹脂層２よりポリウレタン
フォーム層３が引き剥され、両者の間に若干の空間５を
形成できる。これは、防水性樹脂層２の真空引きによる
延展性がポリウレタンフォーム層３の延展性よりも大き
いこと、プラグの収納凹部４内に対する侵入率を、通常
は収納凹部４の容積の85〜100％とするのを、40〜80％
とすることに起因する。 上記構成において、防水性樹脂層２の肉厚は100〜3000
ミクロン、ポリウレタンフォーム層３の肉厚は0.5〜5mm
が経済的であである。そして、防水性樹脂層２の基材と
してはポリプロピレン、塩化ビニル樹脂、ハイインパク
トポリスチレン樹脂等の発泡してない樹脂シート、嵩密
度が0.03〜0.5g/cm3の発泡ポリスチレンペーパー（PS
P）、架橋発泡ポリエチレン、発泡ポリプロピレン等の
発泡樹脂シートを用いるが、断熱性の点で発泡樹脂シー
トを用いるのが望ましく、連通気泡構造のポリウレタン
フォーム層３の基材としては前項で述べた物性のものが
用いられる。ポリウレタンフォーム層３の伸び率が、12
0％未満では、底の深い収納凹部を形成するのが困難と
なり、製造されたトレイは収納凹部が浅いため被収納物
を安定させにくいが、逆に伸び率が180％を超えると、
ポリウレタンフォーム層の浮き上がりが小さいトレイに
形成され易く、クッション性が小さくて果物等の被収納
物が底付きし、傷付き易くなる。また、反発弾性率が25
％未満では輸送時における収納トレイのクッション性が
十分でなく、逆に50％を超えると、クッション性がよく
なりすぎて被収納物がとびはねてしまい、後で並び変え
が必要となる。 更にまた、圧縮残留歪が10％を超えると収納トレイのク
ッション性が悪く、果物が傷つき易くなる。なお、接着
剤層６としてはエチレン・酢酸ビニル共重合体、サーリ
ン、低密度ポリエチレン等の比較的融点の低い樹脂フイ
ルムが用いられる。Embodiments of the present invention will be described below with reference to the accompanying drawings. The tray body 1 is made of a composite sheet in which a polyurethane foam layer 3 having an open cell structure serving as a surface layer is bonded onto a waterproof resin layer 2 which is a base material layer, and is formed by, for example, a plug assist vacuum forming method. At the time of molding, a plurality of storage recesses 4 for storing fruits, eggs, etc. are provided. In these storage recesses 4, the polyurethane foam layer 3 is slightly raised above the waterproof resin layer 2 by adjusting the height of the plug during molding, and a space 5 is formed between the two layers to form a storage tray. To form the present storage tray, it is possible to use a composite sheet having a three-layer structure in which an adhesive layer 6 is provided between the waterproof resin layer 2 and the polyurethane foam layer 3 as shown in FIG. Further, in order to manufacture the present storage tray, a composite sheet obtained by laminating a polyurethane foam sheet on a waterproof resin sheet is softened, and a gap at the time of fitting and joining is 4 to 20 mm, preferably 5 to 15 mm. By using both molds, the composite sheet in a softened state is plug-assisted from the polyurethane foam sheet side, while the vacuum is drawn from the waterproof resin sheet side. In this plug-assisted vacuum forming, the plug is the storage recess 4 The volume to be inserted into the storage recess 4
If the volume is 40 to 80% of the volume, the polyurethane foam layer 3 is peeled off from the waterproof resin layer 2 in the storage recess 4 of the tray body 1, and a small space 5 can be formed between them. . This is because the ductility of the waterproof resin layer 2 due to vacuuming is higher than that of the polyurethane foam layer 3, and the penetration rate of the plug into the accommodating recess 4 is usually 85 to 100% of the volume of the accommodating recess 4. 40-80%
Due to In the above structure, the waterproof resin layer 2 has a wall thickness of 100 to 3000.
Micron, polyurethane foam layer 3 has a wall thickness of 0.5-5 mm
Is economical. The base material of the waterproof resin layer 2 is a non-foamed resin sheet such as polypropylene, vinyl chloride resin, high-impact polystyrene resin, expanded polystyrene paper with a bulk density of 0.03 to 0.5 g / cm 3 (PS
P), a foamed resin sheet such as cross-linked foamed polyethylene or polypropylene is used, but it is preferable to use a foamed resin sheet from the viewpoint of heat insulation, and as the base material of the polyurethane foam layer 3 having an open cell structure, the physical properties described in the previous section are used. What is used. The elongation of the polyurethane foam layer 3 is 12
When it is less than 0%, it becomes difficult to form a deep storage recess, and the manufactured tray has a shallow storage recess, which makes it difficult to stabilize the stored object. On the contrary, when the expansion rate exceeds 180%,
The polyurethane foam layer is likely to be formed on a tray with a small floating, the cushioning property is small, and the stored objects such as fruits are bottomed and easily scratched. Also, the impact resilience is 25
If it is less than%, the cushioning property of the storage tray during transportation is not sufficient, and if it exceeds 50%, the cushioning property becomes too good and the stored items will jump, requiring rearrangement later. Furthermore, if the compression residual strain exceeds 10%, the cushioning property of the storage tray is poor and the fruits are easily damaged. As the adhesive layer 6, a resin film having a relatively low melting point such as ethylene / vinyl acetate copolymer, Surlyn or low density polyethylene is used.
本考案は上記の如くであって、トレイの表面層が連通気
泡構造のポリウレタンフォームにより形成されているた
め、凝縮して果物や鶏卵等の被包装物の表面に付着した
水滴をトレイの表面層であるポリウレタンフォーム層に
よって完全に吸収でき、収納凹部に収容されている被収
納物にシミを生じさせるとか、被収納物を腐らせたりす
ることはない。また、各収納凹部の部分では、防水性樹
脂層面よりポリウレタンフォーム層が若干浮いて両層の
間に空間が形成されているので、各収納凹部に収容され
る被収納物は衝撃から保護されることは勿論のこと、特
に各収納凹部間を仕切る肩の部分にも良好な緩衝性が付
与されるので、この肩の部分で傷つき易い心配も全面的
に解消して被包装物の品質低下を防止できる。加えて、
ポリウレタンフォームの表面層によって肌ざわりも向上
し、体裁の良好な収納トレイを提供できるものであっ
て、その実用的価値は極めて多大である。 なお、本考案に係る収納トレイ〔伸び率が150％、見掛
け密度が16g/l、反発弾性率が45％、圧縮残留歪が５
％、硬さが8.5kgである連通気泡構造のポリウレタンフ
ォーム（肉厚が1.5mm）と、エチレン・酢酸ビニル共重
合体フイルム（肉厚が18ミクロン）と、PSP（密度が0.0
5g/cm3、肉厚が1.8mm）の真空成形品・・・・・本考案
品〕に桃を収容し、この収納トレイを２段積みして段ボ
ール箱に入れ、これを自転車の荷台に載せて10kmの砂利
道を走行したときの桃の傷つき具合を、表面層が吸水性
不織布で形成されている収納トレイ（不織布／フイルム
/PSP・・・・・比較例）を用いた場合のそれと比較する
と、その結果は次表の通りである。 The present invention is as described above, and since the surface layer of the tray is formed of polyurethane foam having an open-cell structure, water droplets that are condensed and adhered to the surface of the object to be packaged such as fruits and eggs are surface layer of the tray. It can be completely absorbed by the polyurethane foam layer, and does not cause stains on the stored object stored in the storage recess or rot the stored object. Further, in each of the storage recesses, the polyurethane foam layer is slightly floated above the waterproof resin layer surface to form a space between the two layers, so that the objects to be stored in the storage recesses are protected from impact. Of course, since good cushioning property is given especially to the shoulder part that separates the storage recesses, the worry of being easily scratched at this shoulder part is completely eliminated and the quality of the packaged item is reduced. It can be prevented. in addition,
The surface layer of polyurethane foam improves the texture and can provide a storage tray having a good appearance, and its practical value is extremely great. In addition, the storage tray according to the present invention (elongation rate 150%, apparent density 16g / l, impact resilience 45%, residual compression strain 5
%, Hardness of 8.5 kg, open-celled polyurethane foam (wall thickness 1.5 mm), ethylene / vinyl acetate copolymer film (wall thickness 18 μm), PSP (density 0.0
5 g / cm 3, the wall thickness is accommodated peaches vacuum formed article ----- present invention product] of 1.8 mm), placed in a cardboard box with stacked two stages this storage tray, which in the carrier of the bicycle The storage tray (nonwoven fabric / film) whose surface layer is made of water-absorbent non-woven fabric shows how the peach will be damaged when it is placed on a gravel road for 10 km.
The results are shown in the following table when compared with the case of using / PSP (comparative example).
【図面の簡単な説明】 図面は本考案の実施例を示すもので、第１図は平面図、
第２図は第１図Ａ−Ａ線断面図、第３図は複合シートの
構成例を拡大して示す第２図Ｂ部分の断面図である。 図中、１はトレイ体、２は防水性樹脂層、３はポリウレ
タンフォーム層、４は収納凹部、５は空間である。BRIEF DESCRIPTION OF THE DRAWINGS The drawing shows an embodiment of the present invention, FIG. 1 is a plan view,
FIG. 2 is a sectional view taken along the line AA of FIG. 1, and FIG. 3 is a sectional view of a portion of FIG. In the figure, 1 is a tray body, 2 is a waterproof resin layer, 3 is a polyurethane foam layer, 4 is a storage recess, and 5 is a space.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｂ６５Ｄ 85/34 Ｆ 0330−3Ｅ (56)参考文献 実開 昭60−193079（ＪＰ，Ｕ) 実公 昭55−3053（ＪＰ，Ｙ２)─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Office reference number FI technical display location B65D 85/34 F 0330-3E (56) References Actually published Sho 60-193079 (JP, U) Actual Public Sho 55-3053 (JP, Y2)
Claims (1)
掛け密度が10〜40g/l、反発弾性率が25〜50％、圧縮残
留歪が10％以下である連通気泡構造のポリウレタンフォ
ーム層を設けた少なくとも２層以上の複合シートによっ
て、上記ポリウレタンフォーム層を表面層としたトレイ
体を形成し、このトレイ体には該トレイ体の成形時に果
物や鶏卵等を収容するための複数個の収納凹部を設け、
これらの収納凹部では防水性樹脂層よりポリウレタンフ
ォーム層を若干浮き上がらせて、該両層の間に空間を形
成して成ることを特徴とする収納トレイ。1. An open cell structure having an elongation rate of 120 to 180%, an apparent density of 10 to 40 g / l, a repulsion elastic modulus of 25 to 50%, and a residual compression strain of 10% or less on a waterproof resin layer. A tray body having the polyurethane foam layer as a surface layer is formed from at least two or more composite sheets provided with a polyurethane foam layer, and the tray body is used for accommodating fruits, eggs, etc. at the time of molding the tray body. Providing multiple storage recesses,
A storage tray characterized in that a polyurethane foam layer is slightly raised above the waterproof resin layer in these storage recesses to form a space between the two layers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989115734U JPH0728088Y2 (en) | 1989-09-30 | 1989-09-30 | Storage tray |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989115734U JPH0728088Y2 (en) | 1989-09-30 | 1989-09-30 | Storage tray |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0353417U JPH0353417U (en) | 1991-05-23 |
| JPH0728088Y2 true JPH0728088Y2 (en) | 1995-06-28 |
Family
ID=31664052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989115734U Expired - Fee Related JPH0728088Y2 (en) | 1989-09-30 | 1989-09-30 | Storage tray |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0728088Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003025405A (en) * | 2001-07-23 | 2003-01-29 | Toshiba Mach Co Ltd | Injection molding machine |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS622358Y2 (en) * | 1978-06-23 | 1987-01-20 | ||
| JPS60193079U (en) * | 1984-06-01 | 1985-12-21 | 積水化成品工業株式会社 | packaging container |
-
1989
- 1989-09-30 JP JP1989115734U patent/JPH0728088Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0353417U (en) | 1991-05-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |