JP3381529B2 - Paper insert heat insulation container - Google Patents
Paper insert heat insulation containerInfo
- Publication number
- JP3381529B2 JP3381529B2 JP27225796A JP27225796A JP3381529B2 JP 3381529 B2 JP3381529 B2 JP 3381529B2 JP 27225796 A JP27225796 A JP 27225796A JP 27225796 A JP27225796 A JP 27225796A JP 3381529 B2 JP3381529 B2 JP 3381529B2
- Authority
- JP
- Japan
- Prior art keywords
- paper
- resin
- piece
- heat insulating
- paper piece
- 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
- 238000009413 insulation Methods 0.000 title claims description 13
- 229920005989 resin Polymers 0.000 claims description 43
- 239000011347 resin Substances 0.000 claims description 37
- 239000008188 pellet Substances 0.000 claims description 12
- 239000002985 plastic film Substances 0.000 claims description 10
- 229920006255 plastic film Polymers 0.000 claims description 10
- 239000011248 coating agent Substances 0.000 claims description 9
- 238000000576 coating method Methods 0.000 claims description 9
- 238000001746 injection moulding Methods 0.000 claims description 8
- 239000000088 plastic resin Substances 0.000 claims description 6
- 239000012778 molding material Substances 0.000 claims description 4
- 238000010030 laminating Methods 0.000 claims 1
- 238000000465 moulding Methods 0.000 claims 1
- 239000000123 paper Substances 0.000 description 74
- -1 first Substances 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 9
- 239000004794 expanded polystyrene Substances 0.000 description 7
- 229920001684 low density polyethylene Polymers 0.000 description 7
- 239000004702 low-density polyethylene Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 239000004743 Polypropylene Substances 0.000 description 5
- 229920001155 polypropylene Polymers 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000004698 Polyethylene Substances 0.000 description 4
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 4
- 229920000573 polyethylene Polymers 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 101100160821 Bacillus subtilis (strain 168) yxdJ gene Proteins 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000002651 laminated plastic film Substances 0.000 description 3
- 239000010893 paper waste Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical compound CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 2
- 229920006328 Styrofoam Polymers 0.000 description 2
- 239000011324 bead Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 229920001903 high density polyethylene Polymers 0.000 description 2
- 239000004700 high-density polyethylene Substances 0.000 description 2
- 229920000092 linear low density polyethylene Polymers 0.000 description 2
- 239000004707 linear low-density polyethylene Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000008261 styrofoam Substances 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 1
- 230000002730 additional effect Effects 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 235000012149 noodles Nutrition 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000012798 spherical particle Substances 0.000 description 1
- 238000010558 suspension polymerization method Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0013—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor using fillers dispersed in the moulding material, e.g. metal particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
- B65D1/22—Boxes or like containers with side walls of substantial depth for enclosing contents
- B65D1/26—Thin-walled containers, e.g. formed by deep-drawing operations
- B65D1/265—Drinking cups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
- B65D81/38—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents with thermal insulation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/712—Containers; Packaging elements or accessories, Packages
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Ceramic Engineering (AREA)
- Packages (AREA)
- Laminated Bodies (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Containers Having Bodies Formed In One Piece (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は発泡スチロールや厚
紙製の断熱容器の代替品に関するものであり、さらに詳
細には製造工程が少なく、不用となった再生困難な紙片
が使用でき、かつ強度に優れ、耐水性のある紙片インサ
ート断熱容器の提供に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a substitute for a heat insulation container made of expanded polystyrene or cardboard. More specifically, it has a small number of manufacturing steps and can be used as waste paper pieces that are difficult to recycle, and is excellent in strength. The present invention relates to the provision of a water-resistant paper insert insert insulation container.
【０００２】[0002]
【従来の技術】従来より断熱容器として、発泡スチロー
ル製や厚紙製あるいは両面段ボールの中芯（コルゲート
紙）様の紙を厚紙でサンドした形態の積層紙からなるも
のが知られている。ここで発泡スチロール製の断熱容器
は、先ず懸濁重合法で得られたポリスチレンビーズ（球
状粒子）にペンタン等発泡剤を含浸させて発泡ポリスチ
レンビーズ（ＥＰＳ）を製造し、このＥＰＳを水蒸気で
加熱して、予備発泡粒として所定の金型内で再度加熱し
て相互に融着させて製造するのが一般的である。このよ
うに製造工程が多いこと、即ちコスト高になる問題があ
る。またこのようにして得られた発泡スチロール製の断
熱容器は、つぶれや破壊などに対する強度がないなどの
欠点がある。2. Description of the Related Art Conventionally, as a heat insulating container, there is known a heat insulating container made of laminated paper in the form of styrene foam, cardboard or double-faced cardboard core (corrugated paper) sanded with cardboard. Here, in the heat insulation container made of expanded polystyrene, first, polystyrene beads (spherical particles) obtained by the suspension polymerization method are impregnated with a foaming agent such as pentane to produce expanded polystyrene beads (EPS), and the EPS is heated with steam. Then, as pre-expanded granules, they are generally heated again in a predetermined mold and fused with each other to be manufactured. As described above, there is a problem that the number of manufacturing processes is large, that is, the cost is high. Further, the heat-insulating container made of expanded polystyrene obtained as described above has a defect that it has no strength against crushing or breaking.
【０００３】一方厚紙製の断熱容器は、両面ポリエチレ
ン加工紙を打ち抜き、ブランク板紙とし、スピンドル等
で丸め、サイドをホットエアーや高周波等で圧着する。
次いで底板を装着しホットエアー等で水など漏れない様
に完全に圧着し更に底部及び上部にカール加工を施すこ
とによって製造されるのが一般的である。このように工
程数が多いことと、液体漏れが絶対ないような管理が必
要となる。また、得られた容器は紙厚が厚くなり、つぶ
れなどに対する強度もあるとは言えない。On the other hand, for a heat insulating container made of cardboard, double-sided polyethylene processed paper is punched out to make a blank board, which is rolled by a spindle or the like and the sides are pressure-bonded by hot air or high frequency.
Then, it is generally manufactured by mounting a bottom plate, completely crimping it with hot air or the like so as not to leak water, and curling the bottom and the top. As described above, it is necessary to control the number of steps to be large and to prevent liquid leakage. In addition, the obtained container has thick paper and cannot be said to have strength against crushing.
【０００４】また両面段ボール様の断熱容器は、両面段
ボールのライナーに相当するポリエチレン加工紙の間に
コルゲート紙をサンド接着した容器原紙を打ち抜き、以
下前記厚紙製の断熱容器とほぼ同様の工程によって製造
される。このように前記厚紙製の断熱容器よりも工程数
が多く、断熱性には優るがつぶれなどに対する強度には
劣る。またかなり厚さのある断熱容器となるなどの問題
点がある。A double-sided corrugated board-like heat-insulating container is manufactured by punching out a container base paper obtained by sandwich-bonding corrugated paper between polyethylene-processed paper corresponding to a double-sided corrugated board liner, and manufacturing the same as the above-mentioned cardboard heat-insulating container. To be done. As described above, the number of steps is larger than that of the cardboard heat insulating container, and the heat insulating property is excellent, but the strength against crushing is poor. In addition, there is a problem that it becomes a heat insulating container having a considerable thickness.
【０００５】[0005]
【発明が解決しようとする課題】本発明は、かかる従来
技術や従来品の問題点を解決するものであり、その課題
とするところは、製造工程数が少なく、つぶれや破壊な
どに対する強度があり、容器厚さの薄い、かつ廃棄物と
なる紙片も使用できる紙片インサート断熱容器を提供す
ることにある。SUMMARY OF THE INVENTION The present invention is intended to solve the problems of the prior art and the conventional products, and the problem is that the number of manufacturing steps is small and there is strength against crushing and breakage. Another object of the present invention is to provide a paper piece insert heat insulating container which has a small container thickness and can be used as a waste paper piece.
【０００６】[0006]
【課題を解決するための手段】本発明に於いて上記課題
を達成するために、まず請求項１の発明では、角形にカ
ットした紙片とペレット樹脂とを混合してなる成形用材
を用いて、所定の成形体状に成形されている紙片インサ
ート断熱容器において、前記角形にカットした紙片が紙
の表面もしくは裏面もしくは両面にプラスチックフィル
ムのラミネートもしくは樹脂塗布によってなる多層構造
でなることを特徴とする紙片インサート断熱容器とした
ものである。In order to achieve the above object in the present invention, first, in the invention of claim 1, a molding material formed by mixing a square-shaped paper piece and a pellet resin is used. Paper strip inserts that are molded into a predetermined molded body
In the heat insulation container, the square-shaped piece of paper is paper.
Plastic fill on front, back or both sides of
Multi-layer structure consisting of laminated aluminum or resin coating
A paper piece insert heat insulating container characterized by comprising:
【０００７】また、請求項２の発明では、前記成形体
が、射出成形により得られることを特徴とする請求項１
記載の紙片インサート断熱容器としたものである。Further, in the invention of claim 2, the molded body is
Is obtained by injection molding.
It is a paper piece insert heat insulation container described .
【０００８】[0008]
【０００９】[0009]
【発明の実施の形態】以下本発明の実施の形態を図面に
より詳細に説明する。本発明の紙片インサート断熱容器
の一例として図１に示すように、角形紙片（１０）とペ
レット樹脂（１２）とを混合してなる成形用材を用い
て、所定の成形体状に成形されている紙片インサート断
熱容器（１）であって、その角形紙片（１０）が図２に
示すように紙原紙（１６）面にプラスチックフィルムも
しくは樹脂塗布膜（１４）を積層した多層構造としたも
のである。さらに紙片インサート断熱容器（１）として
の成形体が射出成形により得られるものである。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings. As an example of the paper piece insert heat insulating container of the present invention, as shown in FIG. 1, a molding material formed by mixing a square paper piece (10) and a pellet resin (12) is molded into a predetermined molded body. A paper piece insert heat insulating container (1) having a multilayer structure in which a rectangular paper piece (10) has a plastic film or a resin coating film (14) laminated on the surface of a paper base paper (16) as shown in FIG. . Further, a molded body as the paper piece insert heat insulating container (1) is obtained by injection molding.
【００１０】ここで先ず紙片インサート断熱容器（１）
の製造について説明する。図３に示すようにプラスチッ
クフィルムラミネートもしくは樹脂塗布紙（１８）等を
シュレッダー（１９）または樹脂粉砕機等でカットし、
一辺が１．０ｍｍ〜５．０ｍｍ、望ましくは一辺が１．
０ｍｍ〜３．０ｍｍ、厚さ０．１８ｍｍ〜２．０ｍｍ、
望ましくは厚さ０．２８ｍｍ〜１．６８ｍｍの図２に示
す角型紙片（１０）とする。なお、形状は四角形状に限
らず、三角形状、円状等いずれでもよい。 一方ペレッ
ト樹脂（３０）を用意し、前記角形紙片（１０）とドラ
イブレンド（混合）して、スクリュー式射出成形機（４
０）のホッパー（４２）に投入される。First, a paper piece insert heat insulation container (1)
The production will be described. As shown in FIG. 3, a plastic film laminate or resin coated paper (18) is cut with a shredder (19) or a resin crusher,
1.0 mm to 5.0 mm on one side, preferably 1.
0 mm to 3.0 mm, thickness 0.18 mm to 2.0 mm,
Desirably, the square paper piece (10) shown in FIG. 2 having a thickness of 0.28 mm to 1.68 mm is used. The shape is not limited to a quadrangular shape, and may be a triangular shape, a circular shape, or the like. On the other hand, a pellet resin (30) is prepared, dry-blended (mixed) with the square paper piece (10), and a screw type injection molding machine (4
0) is put into the hopper (42).
【００１１】この投入された混合物は、ヒーター（４
４）により加熱されたスクリュー（４６）の回転によっ
て、可塑化され、スプルーを介して型締めをした所望の
金型（４８）に射出される。The charged mixture was heated by a heater (4
It is plasticized by the rotation of the screw (46) heated by 4), and is injected into a desired mold (48) which has been clamped through a sprue.
【００１２】ここで使用されるプラスチックフィルムラ
ミネートもしくは樹脂塗布紙（１８）としては、印刷
業、特に紙器等の製造において発生する印刷損紙が利用
できる。このことは最近問題になっている廃棄物の再利
用に貢献することになる。すなわち樹脂等の介在しない
印刷損紙やその製品のほとんどは、再生紙の原料として
再利用されるが、プラスチックフィルムラミネート紙や
は樹脂塗布紙は、再生紙の原料としての再利用が不可能
であるため、埋め立て処分か焼却処理とせざるを得ない
現状からすれば、プラスチックフィルムラミネートもし
くは樹脂塗布紙（１８）の再利用は廃棄物問題に多大な
貢献をするものである。As the plastic film laminate or the resin coated paper (18) used here, a printing spoilage produced in the printing industry, particularly in the manufacture of paper containers and the like can be used. This will contribute to the reuse of waste, which has become a problem in recent years. In other words, most of printing waste paper and its products that do not include resin are reused as raw materials for recycled paper, but plastic film laminated paper and resin coated paper cannot be reused as raw materials for recycled paper. Therefore, in view of the current situation where landfill disposal or incineration is unavoidable, the reuse of the plastic film laminate or the resin coated paper (18) makes a great contribution to the waste problem.
【００１３】この角型紙片（１０）として、プラスチッ
クラミネートもしくは樹脂塗布紙（１８）を使用するメ
リットは上記のような廃棄物問題への貢献のほか、紙片
インサート断熱容器（１）の表面に紙が露出することが
少なく、耐水性に優れたものとする効果を有するもので
ある。[0013] As the square piece of paper (10), the benefits of using up Rasuchi'<br/> click laminated or resin coated paper (18) Other contributions to the above-described waste problems, paper insert insulated container ( The paper is less exposed to the surface of 1) and has the effect of making it excellent in water resistance.
There is .
【００１４】またペレット樹脂（３０）の種類として、
図２に示す角型紙片（１０）のプラスチックフィルムも
しくは樹脂塗布膜（１４）との熱融着性の高い樹脂が射
出成形性等から望ましい。即ち同系統で軟化点等も近い
樹脂の選定により、可塑化の工程で、ペレット樹脂（３
０）と角型紙片（１０）のプラスチックフィルム又は樹
脂塗布膜（１４）との熱融着により、射出成形品の最表
面に均一に樹脂層が形成され、より良質の射出成形品を
得ることができる。例えば、プラスチックフィルム又は
樹脂塗布膜（１４）がポリエチレンの場合、ペレット樹
脂（３０）として低密度ポリエチレン（ＬＤＰＥ）、高
密度ポリエチレン（ＨＤＰＥ）、線状低密度ポリエチレ
ン（Ｌ−ＬＤＰＥ）樹脂との組み合わせがより望まし
い。またプラスチックフィルム又は樹脂塗布膜（１４）
がポリプロピレンの場合、ペレット樹脂（３０）とし
て、ランダム重合ポリプロピレン、ブロック重合ポリプ
ロピレン、ホモ重合ポリプロピレン樹脂との組み合わせ
がより望ましい。As the type of pellet resin (30),
A resin having a high heat fusion property with the plastic film or the resin coating film (14) of the square paper piece (10) shown in FIG. 2 is preferable in terms of injection moldability and the like. In other words, by selecting a resin of the same system with a similar softening point, pellet resin (3
0) and the plastic film or resin coating film (14) of the square paper piece (10) are heat-sealed to form a resin layer uniformly on the outermost surface of the injection-molded product, and to obtain a higher-quality injection-molded product. You can For example, when the plastic film or resin coating film (14) is polyethylene, the pellet resin (30) is combined with low density polyethylene (LDPE), high density polyethylene (HDPE), and linear low density polyethylene (L-LDPE) resin. Is more desirable. Also, plastic film or resin coating film (14)
When polypropylene is polypropylene, the pellet resin (30) is more preferably a combination of random polymerization polypropylene, block polymerization polypropylene, and homopolymerization polypropylene resin.
【００１５】次に紙片インサート断熱容器（１）の断熱
性の効果について実証した。角型紙片（１０）としてポ
リエチレンフィルム両面ラミネート紙２ｍｍ角とペレッ
ト樹脂（３０）として、低密度ポリエチレン（ＬＤＰ
Ｅ）を７０対３０の割合で混合し（紙含有率５４．６
％）図４（ａ）に示す成形体片とした。比較成形体片と
して、図４（ｂ）に示すＬＤＰＥ樹脂単体の成形体片と
図４（ｃ）に示す紙繊維（１１）とＬＤＰＥ樹脂（１
２）とを混合し紙含有率５２％の成形体片を作製した。Next, the effect of the heat insulating property of the paper piece insert heat insulating container (1) was demonstrated. 2mm square polyethylene film double-sided laminated paper as square paper piece (10) and low density polyethylene (LDP) as pellet resin (30)
E) was mixed in a ratio of 70:30 (paper content 54.6).
%) The molded body piece shown in FIG. As a comparative molded body piece, a molded body piece of the LDPE resin alone shown in FIG. 4 (b), the paper fiber (11) and the LDPE resin (1 shown in FIG. 4 (c).
2) and were mixed to prepare a molded piece having a paper content rate of 52%.
【００１６】以上３種の成形体片の熱伝導率は、図４
（ａ）の成形体片では、０．２４（ｗ−ｍ・ｋ）、
（ｂ）の成形体片では、０．４４（ｗ−ｍ・ｋ）、
（ｃ）の成形体片では、０．３６（ｗ−ｍ・ｋ）であっ
た。このことから、紙が含有することによって、熱伝導
率が小さくなり、紙繊維状のものを含有したよりもほぼ
同等の紙含有率とした角型紙片を含有させたものの方が
熱伝導率が小さくなることが実証された。すなわち角型
紙片を含有させたものが最も断熱性に優れていることが
実証された。このことは、異材質構成の界面では熱伝達
度係数で表される伝達ロスが発生することから、紙片が
異材質で多層であればある程、層の界面での熱伝達度係
数の関係で断熱効果が向上することの立証である。The thermal conductivity of the above three types of molded pieces is shown in FIG.
In the molded body piece of (a), 0.24 (w-m · k),
In the molded body piece of (b), 0.44 (w-m · k),
In the molded body piece of (c), it was 0.36 (wm · k). From this, the inclusion of paper reduces the thermal conductivity, and the thermal conductivity of the paper containing the square-shaped paper pieces with a paper content almost equal to that of the paper fibrous material is higher. It was proved to be smaller. That is, it was proved that the one containing the square paper piece had the most excellent heat insulating property. This is because the transfer loss represented by the heat transfer coefficient occurs at the interface of different material configurations. This is proof that the heat insulation effect is improved.
【００１７】以上のように、本発明の紙片インサート断
熱容器（１）は、発泡スチロールの代替として、カップ
めん容器や浅トレイなどへの用途があり、発泡スチロー
ル断熱用途代替として、クーラーボックスや冷凍容器断
熱材などへの用途がある。また耐熱カップや冷凍カップ
等の断熱カップとしての用途もある。As described above, the paper piece insert heat insulating container (1) of the present invention has applications as a cup noodle container and a shallow tray as an alternative to Styrofoam. There is a use to. It is also used as a heat insulating cup such as a heat resistant cup or a freezing cup.
【００１８】[0018]
【実施例】次に本発明を実施例により、本発明を具体的
に説明する。
＜実施例１＞以下に示す材料、射出成形条件等で、図１
に示す断熱カップを作製した。EXAMPLES Next, the present invention will be described in detail with reference to Examples. <Example 1> With the following materials, injection molding conditions, etc., FIG.
The heat insulating cup shown in FIG.
【００１９】 使用樹脂 ＬＤＰＥ（ｇ８０１：昭和電工（株）製） 角型紙片 ポリエチレン両面ラミネート紙 角型紙片とペレット樹脂の比率 ７０対３０（重量比） 成形体としての紙含有率 ５４．６％ 角型紙片のサイズ 約２．０ｍｍ角、厚さ約１．０ｍｍ 射出成形条件 樹脂温度 １６０°Ｃ−１５０°Ｃ−１５０°Ｃ 射出スクリュー径 ３０ｍｍφ 元圧 １４００ｋｇ／ｃｍ2 射出速度 ５５％ 圧力 ９０％（１次） ４０％（２次） 計量 ４０ｍｍResin used LDPE (g801: Showa Denko KK) Square paper piece Polyethylene double-sided laminated paper Ratio of square paper piece to pellet resin 70:30 (weight ratio) Paper content as a molded product 54.6% square Size of pattern paper piece about 2.0 mm square, thickness about 1.0 mm Injection molding conditions Resin temperature 160 ° C-150 ° C-150 ° C Injection screw diameter 30 mmφ Original pressure 1400 kg / cm 2 Injection speed 55% Pressure 90% ( Primary) 40% (Secondary) Weighing 40 mm
【００２０】以上の条件で作製された断熱カップの胴面
平均厚さは、０．８０ｍｍで、熱伝導率は、０．２４
（ｗ−ｍ・ｋ）であり、発泡スチロールや厚紙製等の断
熱カップに比べ薄肉にもかかわらず、つぶれや破壊に対
する強度に優れかつ十分な断熱性を示した。またこの断
熱カップ表面に紙が露出せず、最表面に均一に樹脂が形
成されている耐水性等にも優れたものであった。The heat insulating cup manufactured under the above conditions has an average thickness of the body surface of 0.80 mm and a thermal conductivity of 0.24.
(W−m · k), which was excellent in strength against crushing and breakage and had sufficient heat insulating property in spite of being thinner than the heat insulating cup made of styrene foam or cardboard. Further, the paper was not exposed on the surface of the heat insulating cup, and the resin was uniformly formed on the outermost surface, which was excellent in water resistance and the like.
【００２１】[0021]
【発明の効果】本発明は以上の構成であるから、下記に
示す如き効果がある。即ち、本発明の紙片インサート断
熱容器は、角形にカットした紙片とペレット樹脂とを混
合してなる成形用材を用いて、所定の成形体状に成形さ
れていて、その角形にカットした紙片が紙の表面もしく
は裏面もしくは両面にプラスチックフィルムのラミネー
トもしくは樹脂塗布によってなる多層構造でなっている
ので、発泡スチロールや厚紙製等の断熱容器に比べ薄肉
にもかかわらず、つぶれや破壊に対する強度に優れかつ
十分な断熱性を示す効果に加え、前記プラスチックフィ
ルムのラミネートもしくは樹脂塗布によってなる多層構
造の層界面での熱伝達速度で表される伝達ロスの発生か
ら、より断熱性のある容器が得られ、かつ断熱容器の表
面に紙が露出せず、最表面に均一に樹脂が形成されてい
て耐水性にも優れた容器とする効果がある。さらに角型
紙片としてのプラスチックラミネートもしくは樹脂塗布
紙として、不用となり再生困難な印刷損紙等が使用でき
るので廃棄物のリサイクルに貢献できるという効果があ
る。Since the present invention has the above-mentioned constitution, it has the following effects. That is, the paper piece insert heat insulating container of the present invention is formed into a predetermined molded body using a molding material obtained by mixing a paper piece cut into a rectangular shape and a pellet resin, and the paper piece cut into the rectangular shape is a paper piece. The surface of
Is a plastic film laminator on the back or both sides
Since has a multilayer structure composed by preparative or resin coating, in addition to the Styrofoam or despite thinner than the heat insulating container cardboard or the like, crushed and excellent strength against fracture and effective exhibit sufficient thermal insulation, the plastic Phil
Multi-layer structure consisting of rum laminate or resin coating
Occurrence of transfer loss represented by heat transfer rate at the structure layer interface?
, A more heat-insulating container was obtained, and
The paper is not exposed on the surface and the resin is evenly formed on the outermost surface.
It also has the effect of making the container excellent in water resistance. More square
Plastic lamination or resin application as a piece of paper
As the paper, it is possible to use printing spoiled paper that is unnecessary and difficult to recycle.
Has the effect of contributing to the recycling of waste.
It
【００２２】[0022]
【００２３】さらにまた、成形体が、射出成形により得
られので、発泡スチロール製や厚紙製等に比べ製造工程
が単純で、工程数も少なく製造コストメリットに効果が
あるものである。Furthermore, since the molded product is obtained by injection molding, the manufacturing process is simpler and the number of processes is smaller than that of the product made of expanded polystyrene or cardboard, which is advantageous in manufacturing cost.
【００２４】また角型紙片を混入した断熱容器とするこ
とによって、燃焼カロリーが小さくなるため、使用後の
焼却処理において、焼却炉を傷めないなどの付随的効果
がある。Further, since the burnt calories are reduced by using the heat insulating container in which the square paper pieces are mixed, there is an additional effect such that the incinerator is not damaged in the incineration process after use.
【図１】本発明の一実施例を側断面で表した説明図であ
る。FIG. 1 is an explanatory diagram showing a side cross-section of an embodiment of the present invention.
【図２】本発明の実施の形態を示すもので、射出成形体
の製造工程を断面 で表した説明図である。FIG. 2 shows an embodiment of the present invention and is an explanatory view showing a manufacturing process of an injection-molded body in a cross section.
【図３】本発明の角形紙片を説明する斜視図である。FIG. 3 is a perspective view illustrating a rectangular paper piece of the present invention.
【図４】断熱性実証試験のための成形体片の側断面図で
（ａ）は本発明の成形体片、（ｂ）と（ｃ）は、比較の
ための他の成形体片を説明する図である。FIG. 4 is a side sectional view of a molded piece for a heat insulation demonstration test, (a) illustrates a molded piece of the present invention, and (b) and (c) illustrate other molded pieces for comparison. FIG.
１‥‥紙片インサート断熱容器
１０‥‥角型紙片
１１‥‥紙繊維
１２‥‥樹脂
１４‥‥プラスチックフィルムもしくは樹脂塗布膜
１６‥‥紙原紙
１８‥‥プラスチックフィルムラミネートもしくは樹脂
塗布紙
１９‥‥シュレッダー
３０‥‥ペレット樹脂
４０‥‥スクリュー式射出成形機
４２‥‥ホッパー
４４‥‥ヒーター
４６‥‥スクリュー
４８‥‥金型1 ... Paper piece insert insulation container 10 ... Square paper piece 11 ... Paper fiber 12 ... Resin 14 ... Plastic film or resin coated film 16 ... Paper base paper 18 ... Plastic film laminated or resin coated paper 19 ... Shredder 30 Pellet resin 40 Screw injection molding machine 42 Hopper 44 Heater 46 Screw 48 Mold
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平８−2516（ＪＰ，Ａ) 特開 平８−183909（ＪＰ，Ａ) 特開 平６−73231（ＪＰ，Ａ) 特開 平７−242224（ＪＰ，Ａ) 特開 平７−124914（ＪＰ，Ａ) 実開 平７−17032（ＪＰ，Ｕ) 実開 昭57−34425（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) B29C 45/14 B32B 1/02 B65D 1/00 B65D 1/09 B65D 81/38 ─────────────────────────────────────────────────── --- Continuation of front page (56) References JP-A-8-2516 (JP, A) JP-A-8-183909 (JP, A) JP-A-6-73231 (JP, A) JP-A-7- 242224 (JP, A) JP 7-124914 (JP, A) Actually open 7-17032 (JP, U) Actually open 57-34425 (JP, U) (58) Fields investigated (Int.Cl. 7 , DB name) B29C 45/14 B32B 1/02 B65D 1/00 B65D 1/09 B65D 81/38
Claims (2)
混合してなる成形用材を用いて、所定の成形体状に成形
されている紙片インサート断熱容器において、前記角形
にカットした紙片が紙の表面もしくは裏面もしくは両面
にプラスチックフィルムのラミネートもしくは樹脂塗布
によってなる多層構造でなることを特徴とする紙片イン
サート断熱容器。1. A paper piece insert heat insulation container molded into a predetermined molding using a molding material obtained by mixing a paper piece cut into a rectangular shape and a pellet resin.
The cut piece of paper is the front, back or both sides of the paper
Laminating of plastic film or resin coating on
A paper piece insert heat insulation container having a multi-layered structure consisting of.
とを特徴とする請求項１記載の紙片インサート断熱容
器。2. The molded body is obtained by injection molding.
The paper piece insert heat insulating container according to claim 1, characterized in that
Bowl .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27225796A JP3381529B2 (en) | 1996-10-15 | 1996-10-15 | Paper insert heat insulation container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27225796A JP3381529B2 (en) | 1996-10-15 | 1996-10-15 | Paper insert heat insulation container |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10119949A JPH10119949A (en) | 1998-05-12 |
| JP3381529B2 true JP3381529B2 (en) | 2003-03-04 |
Family
ID=17511334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27225796A Expired - Fee Related JP3381529B2 (en) | 1996-10-15 | 1996-10-15 | Paper insert heat insulation container |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3381529B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4611468B2 (en) * | 1999-04-05 | 2011-01-12 | 大日本印刷株式会社 | Laminated body and press-molded paper container |
| JP3961421B2 (en) | 2000-09-13 | 2007-08-22 | 日世株式会社 | Biodegradable molded product, method for producing the same, and foam molding composition |
| JP4121874B2 (en) * | 2002-03-13 | 2008-07-23 | 日世株式会社 | Method for producing biodegradable molding and molding die used therefor |
-
1996
- 1996-10-15 JP JP27225796A patent/JP3381529B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH10119949A (en) | 1998-05-12 |
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